Procedure for replacement of punch in press and press

FIELD: machine building.

SUBSTANCE: press consists of servo-motor, of slider, of holder for securing upper part of punch to slider, of mechanism for power transfer and of block of control of at least servo-motor and holder. The control block facilitates transfer of the slider into a position, when an upper part of the punch sits on the lower part of the punch, the upper part of the punch disconnects from the slider and the slider travels upward into standard position. Also, the slider does not reach an upper dead point. Further, upper and lower parts of the punch are extracted from the press and parts of another punch are installed. The slider is lowered into a position, when the upper part of another punch is attached to it; the said upper part is fastened and the slider is hoisted into the position when punching commences.

EFFECT: reduced time for punch replacement.

8 cl, 8 dwg

 

1. The scope of the invention

The present invention relates to a method for changing the stamp in the press and the press.

2. Prior art

The press are classified according to the type of mechanism that creates pressure, and can roughly be divided into "hydraulic", which uses the pressure of the fluid, and "mechanical", which used a mechanical driving force. Essentially, because mechanical presses have better performance and are easier to repair, the stamping operation is basically carried out on mechanical presses.

Figure 1 presents a view schematically illustrating the construction of the known mechanical press 40 General purpose. As shown in figure 1, in the lower part of the mechanical press 40 is base 41, and the frame is punch the pillow 42 for fixing the lower part 44 of the stamp. Over punch the pillow 42 is a slide arranged to move up and down. The upper portion 43 of the stamp attached to the bottom surface of the slide 45 of the latch 57. In the upper part of the mechanical press 40 is mounted for rotation of the drive shaft 46. On one side of the drive shaft 46 are located hand wheel 47 and the clutch 48.

The flywheel 47 and the pulley 50 mounted on the output shaft of the main motor 49, connected by a toothed belt 51. The flywheel 4, driven in rotation by the motor 49, accumulates kinetic energy, and the drive shaft 46 through the coupling 48 is driven into rotation of the accumulated energy. On the drive shaft 46 is installed leading gear 52 which engages with the main gear 54 mounted on the crank shaft 53. With eccentric section 53A of the crank shaft rotatably connected to the rod 55. The rod 55 is connected to the slider 45 through 56 of the adjustment slider. The design of the mechanism 56 of the adjustment slider allows you to adjust the height of the stamp (the height between the bottom surface of the slide 45 and the top surface of the punch pillows, when the slide 45 is in the lower dead point) by changing the vertical position of the slide at the bottom dead point.

In a mechanical press 40 described above constructions kinetic energy is stored in a rotating flywheel 47, driven in rotation by the main engine 49, and the kinetic energy of the flywheel 47 is released when the inclusion of the coupling 48, the power is transmitted through the drive shaft 46, the pinion gear 52 and the gear 54 and the crank shaft 53 and the connecting rod 55 converts rotary motion into linear motion of the slide 45, moving up and down between the top dead point and bottom dead point. Next, in a mechanical press 40 described above constructions, as is the movement of the slide 45 controls the clutch 48, position in which the slide 45 may regularly to stay, limited essentially the top dead point and bottom dead point. The flywheel 47 essentially rotates in one direction and the direction of change is difficult.

In a mechanical press 40 in order to use the stamp, suitable for forming products of a particular type, perform the operation of changing the stamp. Description, the procedure shifts stamp in known mechanical press are given below with reference to figure 2. In the following description "the current stamp" means the top and bottom of the stamp before the change, and "the next stamp" means the top and bottom of the stamp after the change.

(Start)

After manufacturing the current stamp of the slider 45 is stopped at the upper dead point. At this time, the mechanism 56 adjustment of the slide is adjusted so that the lower surface of the slide at the bottom dead point is at the height of production the current stamp. Further adjusting the height of the slide at this point will be referred to as the "working height adjustment slider for the current stamp.

(Phase 1)

The mechanism 546 adjustment of the slide trigger and adjust so that the lower surface of the slide at the bottom dead point is moved to a height that allows you to disconnect the upper part 43 of the current stamp (high is, allows you to disconnect the upper part 43 of the stamp after it is installed on the lower part 44 of the stamp). Further, the height of the slide at this point will be referred to as "adjusting the height of the slide to remove the current stamp.

As a result of such adjustment adjusting the height of the slide is changed from "working height adjustment slider for the current stamp" on "adjusting the height of the slide to remove the current stamp.

(Phase 2

The sleeve 48 includes, and the slider 45 is moved from the upper dead point to the lower dead point. At this time, the slider 45 is stopped in the position in which the upper part 43 of the stamp simply sits on the lower part 44 of the stamp.

(Stage 3)

Actuate the latch 57 stamp and disconnect the upper part 43 of the stamp. Accordingly, the upper portion 43 of the current stamp disconnected from the slider 45.

(Step 4)

Include the coupling 48 and the slider 45 is moved from the bottom dead point to the upper dead point.

(Step 5)

Trigger mechanism 56 of the adjustment slider and adjust it so that the bottom surface of the slide and the bottom dead point of the slide has been moved to the height for mounting the upper part 43 of the next stamp (height, suitable for fastening the upper part 43 of the stamp that is installed on the lower part 44 of the stamp). Adjusting the height of the stamp in this moment onwards is referred to as "adjusting the height of the slide for attachment of the next stamp. As a result of this adjustment adjusting the height of the slide is changed from "adjusting the height of the slide to remove the current stamp" on "adjusting the height of the slide for attachment of the next stamp.

Parallel to the top and bottom of the current stamp is removed from mechanical presses 40 and punch a pillow 42 mechanical press 40 establish upper and lower part of the next stamp.

(Step 6)

Include the coupling 48 to move the slide bar 45 from the upper dead point to the lower dead point.

(Step 7)

Actuate the latch 57 stamp for fastening the upper part 43 of the next stamp. Accordingly, the upper portion 43 of the next stamp is attached to the slide 45.

(Step 8)

Include the coupling 48 to move the slider 45 of the bottom dead point to the upper dead point.

(Step 9)

Trigger mechanism 56 adjustment of the slide so that the lower surface of the slide at the bottom dead point was at the height of production in the following stamp. Further adjusting the height at this point referred to as "adjusting the working height of the slide for the next stamp. As a result of such adjustment adjusting the height of the slide is changed from "adjusting the height of the slide for attachment of the next stamp" on "operating adjusting the height of the slide for the next stamp"

(End)

You can start production next stamp.

Prototypes related to the mechanical press, described above, is shown in patent documents 1-4.

In patent document 1 is disclosed a mechanical press equipped with a drive system comprising a flywheel and clutch Assembly.

In patent document 2 the mechanism of adjustment of the slide containing the screw mechanism.

In patent documents 3 and 4 is disclosed a mechanical press, which uses the mechanism of power transmission in which the slider moves down slowly moves up quickly, while the shaft, which is driven slider that rotates at a constant speed in one direction.

Patent document 1: Japanese patent publication has not passed the examination, No. 2004-34111.

Patent document 2: Japanese utility model publication No. 61-24392.

Patent document 3: Japanese patent publication No. 46-29224.

Patent document 4: Japanese patent publication has not passed the examination, No. 2003-320489.

In known mechanical press 40, described above, during the change of the stamp, the following problems occur.

(1) Since the slider 45 repeatedly makes a reciprocating motion between a top dead point and bottom dead point, these reciprocating movements require a lot of time.

(2) In IU is anime adjustment of the slide as the adjusting mechanism, as shown in patent document 2, essentially uses a screw mechanism, however, since the speed of such a screw mechanism is extremely low, the adjustment requires a lot of time.

(3) design, which uses the mechanism of the power transmission described in patent documents 3 and 4, movement of the slide 45 is slow down, and move the slider 45 up and down to change the stamp requires a lot of time.

BRIEF description of the INVENTION

The present invention was created in view of the above problems, and an aim of the present invention is to provide a method for changing the stamp in the press, which can dramatically reduce the time required to change the stamp, and the establishment press.

To solve the above problems in the way of changing the stamp in the press and in the press of the present invention uses the following means:

(1) According to the present invention proposes a method of changing the stamp in the press, is able to position the slider in any position in the range of movement of the RAM by transferring the rotational motion of the servo motor, which is driven press for the lifting of the slide through the mechanism of power transmission and by controlling the servo motor, comprising stages, in which:

move the slider to a position in which the upper part of the stamp sits on the bottom is the art of the stamp;

disconnect the upper part of the stamp from the slider;

move the slider up to a predetermined position in which the slider does not reach the upper dead point, and stop the slider;

remove the upper and lower part of the stamp from the press and set the top and bottom of the stamp in press;

put the slide in position for fastening the upper part of the stamp to the slider;

attach the upper part of the stamp to the slider; and

raise the stamp in the position where you start the operation of the stamping.

In known mechanical press described above, the stop position of the slide is limited to the upper dead point and bottom dead point, however, since the present invention relates to a press (with servo)made with the possibility to position the slider in any position, by controlling the servo motor, the need to move the slider in the upper dead point when the change of the stamp is missing. Accordingly, since it is sufficient to move the slider to the distance which is necessary and sufficient for change surgery stamp, you can drastically reduce the time spent on moving the slider.

(2) Next, change the stamp in the above-described press contains the adjustment mechanism of the slider, which adjusts the height of the stamp, and the method includes a step at which actuate echanism adjustment of the slide, to change the height adjustment mechanism with adjustable height to perform punching operations already installed (source) stamp on adjusting the height to perform punching operations as a stamp.

In this case, the "already installed stamp"mentioned above corresponds to the current stamp (the stamp to change) in this embodiment. "Your next stamp"mentioned above corresponds to the "next stamp (the stamp after changing this option.

In known press equipped with a mechanism of adjustment of the slide, you have three times to change the height of the slide (see steps 1, 5 and 9 in figure 2). In contrast, according to the present invention, since the operation of the actuation mechanism, the adjustment of the slide can be omitted, since it is sufficient to perform adjustment in accordance with the difference of stamp and perform operations corresponding to steps 1 and 9 known ways to change the stamp, by controlling the positioning of the slide. Accordingly, it is possible to drastically reduce the time required for the operation of the adjustment mechanism of the slide.

(3) Next, change the stamp in the above-described press the step of modifying the height of the adjustment mechanism of the slide execute in parallel with the stage of extraction of the upper and lower parts of the stamp from the press and set the upper and lower parts of another stamp in the press.

They shall be able to effectively accelerate the change stamp, performing phase adjustment of the slide in parallel with the step of extracting the upper and lower parts of the stamp of the press installation press the upper and lower parts of another stamp.

(4) Further, in the method of changing the stamp in the press described above, the mechanism of power transmission is formed by a mechanism in which the slide carries out the rise in response to unidirectional rotation of the servo motor, and the amount of movement of the slide becomes asymmetric between the movement of the slide down and the movement of the slide upwards relative to the angle of rotation of the servo motor, resulting in each of the stages containing the phase displacement of the slide, the slide is moved up and down using the site, the amount of movement is greater than the angle of rotation of the servo motor.

As described above, since the slider move up and down, using the area of the side on which the amount of movement is greater than the angle of rotation of the servo motor, it is possible to reduce the travel time of the slider.

Further, according to the present invention offers the press, containing:

servo motor, which is driven media;

the slider to the bottom surface of which is attached the upper part of the stamp with the ability to move up and down;

the latch stamp holding the top part of the stamp to the bottom surface of the slide with a chance to view the Yu detach;

the mechanism of power transmission that converts rotary motion of the servo motor to the lifting movement of the slide; and

the control unit, managing at least the motor and the latch stamp;

in which the control unit is configured to position the slider in any position in the range of movement of the slide by controlling the servo motor;

the control unit moves the slider to a position in which the upper part of the stamp sets in the lower part of the stamp during the change of the stamp, then sends the command to the latch stamp to detach the upper part of the stamp from the slider, then sends the command to the servo motor for lifting the slider at a desired position, not reaching the upper dead point, and for translation of the slide in the standby mode, moves the slider down in the mounting position of the upper part of the stamp to the slider, after the top and bottom of the stamp was removed from the press and the press were installed in the upper and lower parts of another stamp, then delivers the command to lock the stamp for fastening the upper part of the stamp to the slider and then sends the command to the servo motor for lifting the slider to the position that permits the operation of stamping.

Next, press described above, provided with a mechanism of adjustment of the slide regulating the height of the stamp, and the control unit controls the et adjustment mechanism of the slide so that to change time stamp to change the height adjustment mechanism of the slide to change the working height for an already established stamp on the working height for the next stamp.

Later in the press described above, the control unit controls the change of the height adjustment mechanism of the slide during the change of the stamp in parallel with the extraction operation of the press the upper and lower parts of the stamp and installation press the upper and lower parts of another stamp.

Later in the press described above, the mechanism of transmission power of the press is formed by a mechanism in which the slide carries out the rise in response to unidirectional rotation of the servo motor, and the amount of movement of the slide becomes asymmetric between the movement of the slide down and the movement of the slide upwards relative to the angle of rotation of the servo motor, and the control unit controls the motor so as to move the slider up and down, using the area on the side on which the amount of movement is greater than the angle of rotation of the servo motor during the movement of the slide in the change time stamp.

In the above-described press you can change the stamp described above.

According to the present invention can achieve the effect of a drastic reduction of the time required to change the stamp.

BRIEF DESCRIPTION OF DRAWINGS

Figure 1 - schematic view of a mechanical press is used for carrying out the known method of changing the stamp.

Figure 2 is a view explaining an algorithm known way of changing the stamp.

Figure 3 - schematic view of the design servopress used for implementing the method of the change stamp of the present invention.

Figa view illustrating the spatial relationship between the upper dead point and bottom dead point of the press 3.

Figv view illustrating the spatial relationship between the lower end of the transmission mechanism of the power and the bottom surface of the slide in servopress in figure 3.

5 is a view explaining the algorithm of the method of changing the stamp of the present invention.

Figa is a view showing the height of the bottom surface of the slide during the production of the current stamp according to the change stamp of the present invention.

FIGU is a view showing the height of the bottom surface of the slide during the disconnection of the current stamp according to the change stamp of the present invention.

Figs is a view showing the height of the bottom surface of the slide during the joining of the next stamp according to the change stamp of the present invention.

Fig.6D is a view showing the height of the bottom surface of the slide during the production of the next stamp according to the way the men of the stamp of the present invention.

Figa is a view showing the height of the bottom surface of the slide during production according to the method of changing the stamp.

FIGU is a view showing the height of the bottom surface of the slide during the disconnection of the current stamp on the well-known way of changing the stamp.

Figs is a view showing the height of the bottom surface of the slide during a call the next stamp on the well-known way of changing the stamp.

Fig.7D is a view showing the height of the bottom surface of the slide during the production of the next stamp at a known way of changing the stamp.

Fig is a view showing the relationship between crank angle and the displacement of the slide in the mechanism of power transmission.

Description of the PREFERRED OPTIONS

Next is a detailed description of the preferred variant of the present invention with reference to the attached drawings. In all the drawings the same parts are marked with the same positions and repeated description duplicate parts is omitted.

Figure 3 presents a view schematically showing the structure of the press according to the present invention. The press 1 is press with servo drive (hereinafter referred to as "servopress"), which is designed with the ability to position the slider 4 in an arbitrary position in the range of movement of the slide by controlling the servo motor.

Servopress 1 is equipped with a slider 4, obodno moving up and down over the punch pillow 8, installed on the frame 6, and is designed for machining pressure between the upper part 10 of the stamp and the lower part 12 of the stamp. The upper part 10 of the stamp affixed to the lower surface of the slider 4, and the lower part of the stamp 12 is attached to punch the pillow 8. The slider 4 is provided with a lock 14, which secures the upper part of the stamp 10 to the bottom surface 4 with the possibility of disconnection.

Servopress 1 is equipped with a servo motor 3, which is the source of power. The rotary motion of the servo motor 3 is converted into linear motion (movement up mechanism 16 power transmission. The mechanism 16 power transmission may contain, for example, the combination of a crank shaft and connecting rod, as described in the above patent document 4, a lever mechanism, as in Japanese is not the examined patent publication No. 2003-290984, etc.

The angular position of the servo motor 3 is determined by the sensor 18 angular position. The position of the lower end of the mechanism 16, the transmission power can be calculated on the basis of the measurement data according to the formula of transformation, which is determined by the design of the mechanism 16 power transmission. Next, the structure is arranged to control the angular position of the servo motor 3 to move the lower end of the mechanism 16 of the transmission power in an arbitrary position, using heart and soul is on the feedback position. 18 gauge angular position may be, for example, an optical encoder angular position, resolver, etc.

The mechanism 16 power transmission connected to the RAM 4 through the mechanism 20 adjustment of the slide. The mechanism 20 adjustment of the slide is made with a possibility to adjust the height of the stamp by changing the vertical position of the slide 4 at the bottom dead point of the slide. The mechanism 20 adjustment of the slide can be performed, for example, as a mechanism with the lead screw, as shown in patent document 2 mentioned above (Japanese publication No. 61-24392 for a utility model). The height of the mechanism 20 adjustment of the slide can be changed by rotation of a drive motor 22 of this mechanism. Accordingly, it is possible to change the adjustment of the height of the stamp. Even if the servo motor 3 does not rotate, it is possible to accurately adjust the height of the slide 4.

The height of the mechanism 20 adjustment of the slide can be measured by the measuring device 24, and, optionally, you can adjust the height of the mechanism 20 adjustment of the slide, if necessary, using the feedback position. The measuring device 24 of the adjustment mechanism of the slide may be a linear displacement sensor or measuring with a ruler.

The control unit 9 controls the servo motor 3, the retainer 14 of the stamp and the mechanism 20 adjustment of the slide. Unit control 9 controls the servo is whitelam 9, thereby positioning the slider 4 in an arbitrary position in the range of movement of the slider.

In servopress 1 described above, the design of the stamping operation is carried out by placing mechanism 20 adjust the slide bar to a height that is suitable for forming, by bringing the rotation of the drive motor 22 of the adjustment mechanism of the slide, after which the slider 4 is moved up and down by a mechanism 16 power transmission, rotating the servo motor 3, and summing the upper part 10 and lower part 12 of the stamp to each other by a distance required for stamping.

As shown in figa, during the rotation of the servo motor 3, the position of the lower end of the mechanism 16, the transmission power is changed between the upper dead point, located at a height of H1t from the upper surface of the punch pillows 8, and the lower dead point, located at a height of H1b from the upper surface of the punch pillows 8.

On FIGU position denoted by h1 the height of the lower end of the mechanism 16 transmit power above the upper surface of the punch bags 8 in a particular time and position h2 indicated the height of the mechanism 20 adjustment of the slide. Further, since the thickness of the slide 4 is not changed, it is for convenience in this case equals 0 (in other words, in this case the lower end of the mechanism 20 adjustment of the slide coincides with the bottom of the end of the slide 4). In this case, the position h3 of the lower surface of the slide 4 relative to the upper surface of the punch pillows 8 is determined by the expression of h3=h1-h2. In this case, the true inequality H1d≤h1≤H1t.

Figure 5 presents the algorithm of the method of changing the stamp in the press of the present invention. Figure 5 for carrying out the differences from the algorithm shifts stamp shown in figure 2, the corresponding motion is defined stages, with the same number.

Next on figa-60 shows the variation in the height of the lower surface of the slide 4 during implementation of the change stamp of the present invention, and figa-7D shows the variation in the height of the lower surface of the slide during the implementation of the known method of changing the stamp. The crank shaft 53 and the rod 55 in figure 1 correspond to "the transmission mechanism of power" prototype for figa-7D.

In the following description "the current stamp" means the top and bottom of the stamp before the change, and "the next stamp" means the top and bottom of the stamp after the change.

As shown in figa and 7A, if the height of the lower surface of the slide at the bottom dead point for the production of products current stamp indicated by the position of the h3pc, the height of the mechanism 20 adjustment of the slide becomes h2pc=H1b-h3pc when applying the current stamp. These heights are identical and in the present invention, and in the prototype. As in figure 4, since the thickness of the slide 4 is not changed, for convenience, the thickness of the slide 4 will be 0 (in other words, the lower end of the mechanism 20 adjustment of the slide coincides with the lower end of the slide 4).

Change the stamp of the present invention is carried out according to the following algorithm:

(Start)

as shown in figure 5, after the production of the current stamp of the slider 4 is stopped. At this time, the mechanism 20 adjustment of the slide is adjusted so that the bottom surface of the slide 4 in its lower dead point was located at a height to produce the current stamp (adjusting working height for the current stamp).

(Phase 1)

To change the stamp of the present invention, since the phase corresponding to the phase 1 prototype is missing, the algorithm goes to step 2.

(Phase 2)

Under the control of the control unit 9 of the slider 4 is moved downward by rotating the servo motor 3. At this time, the slider 4 is stopped in the position in which the upper part 10 of the stamp touches the lower part 12 of the stamp. In this case, as shown in figv, the height at which stops the lower surface of the slide 4 to detach the current stamp indicated by the position H2uc.

As shown in figv, in the prototype after actuation mechanism 20 adjustment of the slide lower end of the mechanism 16, the power transmission is stopped at the bottom dead point at which the height, H1b, therefore, the height (full height) mechanism 20 adjustment of the slide becomes equal h2uc=H1b-H3uc.

According to the present invention, on the contrary, the servo motor 3 is controlled so that the position of the lower end of the mechanism 16, the transmission power becomes equal h1uc=h2pc+H3uc. Therefore, according to the present invention in comparison with the prototype, you can exclude the time to change the height of the mechanism 20 adjustment slider.

(Stage 3)

Running unit 9 controls actuate the latch 14 of the stamp to detach the upper part 10 of the current stamp. Therefore, the upper part 10 of the current stamp is detached from the slide 4.

(Step 4)

Running unit 9 controls the servo motor 3 is put into rotation to move the slider 4 in a specific position, not reaching the upper dead point, and stop the slide. More specifically, the slider 4 is moved upward so as to prevent a collision with each other stamp of the slide and devices (not shown) during the extraction of the current stamp and install the following stamp after disconnecting the current stamp.

In the prototype the slider 4 lift at top dead center. On the contrary, according to the present invention, the servo motor 3 is controlled so that the slider 4 and the devices mounted thereon, up to the minimum height at which they do not create prevent them is to retrieve the current stamp and installation of the next stamp. Accordingly, the present invention allows to reduce the distance of upward movement of the slide 4, that is, the time required for such movement, compared with the prototype.

In this case it is possible in several ways to determine how high you want to move the slider, for example, by using a visual assessment on real media, by studying the drawings, with the function checks for a collision in the computer-aided design program and so on

(Step 5)

Under the control of the control unit 9 mechanism 20 adjustment of the slide is brought into action so that the lower surface of the slide 4 at the bottom dead point of the slide 4 has a height to produce products in the following stamp (working adjusting the height of the slide for the next stamp). Adjusting the height of the slide is changed from "working height adjustment slider for the current stamp" on "operating adjusting the height of the slide for the next stamp.

Parallel to the top and bottom of the current stamp is extracted from servopress 1 and punch the pillow 8 servopress 1 establish the following stamp, being in a state where the upper part of the stamp lying on the bottom of the stamp.

(Step 6)

Running unit 9 controls the servo motor 3 is put into rotation so as to lower the slide 4.

On figs h is the which stop the bottom surface of the slide to connect the next stamp indicated by the position H3cn.

As shown in figs, in the prototype, the lower end of the mechanism 16, the transmission power after actuation mechanism 20 adjustment of the slide is stopped at the lower dead point, i.e. at the height of H1b so that the height of the mechanism 20 adjustment of the slide becomes equal h2cn=H1b-H3cn.

On the contrary, according to the present invention, the servo motor 3 is controlled so that the lower end of the mechanism 16, the transmission power has come to the point h1cn=h2pn+H3cn after changing the height (full height) mechanism 20 adjustment slider to h2pn=H1b-H3pn. In this case, the position H3pn marked the height of the lower surface of the slide at the bottom dead point for the production of the next stamp.

Accordingly, in the prototype, the lower end of the mechanism 16 transmission power moves from the upper dead point, however, according to the present invention, since the lower end of the mechanism 16 power transmission starts to move from a position below the upper dead point, it is possible to reduce the time required for this movement.

(Step 7)

Running unit 9 controls the upper part 10 of the next stamp is attached to the slider, powering the latch 14. Accordingly, the upper part 10 of the next stamp is attached to the slider 4.

(Step 8)

p> Running unit 9 controls the servo motor 3 is put into rotation so as to raise the slider 4 on the altitude at which you can start production.

(Step 9)

As shown in Fig, in the prototype mechanism 20 adjustment of the slide is brought into action so that the height of the mechanism 20 adjustment screw has become equal h2pn. On the contrary, as shown in fig.6D according to the present invention, since the height of the mechanism 20 adjustment of the slide is already h2pn, you can omit the operation of the actuation mechanism 20 adjustment of the slide. Thus, the change stamp of the present invention there is no step corresponding to step 9 in the prototype.

(End)

You can now start production next stamp.

As described above, in the case of a press equipped with a mechanism 20 adjustment of the slide, known in the press, you need three times to change the position of the adjustment of the height of the stamp (stages 1, 5 and 9 in figure 2). In contrast, according to the present invention, since it is enough to perform the change in accordance with changes in the sizes of the stamps and perform steps 1 and 9 known ways to change the stamp, by controlling the position of the slide 4, you can omit the operation of the actuation mechanism 20 adjustment of the slide. Thus, it is possible to drastically reduce the time required for the operation of the mechanism 20 adjustment slider.

Next, the operation for changing the stamp can be performed faster and more efficiently performing the step of modifying the adjustment of the height of the slide in parallel with the step of extracting the upper and lower parts of the stamp of the press installation press the upper and lower parts of another stamp.

As the mechanism 16 power transmission, for example as shown in patent document 4, a mechanism is used in which the slider is moving upwards and downwards in accordance with the unidirectional rotation of the engine, and the value (time) move the slider up and down asymmetric relative to the angle of rotation of the motor. The mechanism shown in patent document 4, is formed of the crank shaft and lever mechanism. An example of the relationship between the angular position of the crank and the displacement of the slide 4 in the above-described mechanism of the power transmission shown in Fig. On Fig the amount of movement of the slide more on the area between θ1and 360°, than the part between 0° and θ1.

In the case of the above-described mechanism of the power transmission according to the present invention, the slider 4 is moved up and down, using the area of the side on which the amount of movement relative to the angle at which rotates the servo motor 3, more due to the rotation of the servo motor 3 forward and backward steps 2, 4, 6 and 8, including the movement of the slide 4. This allows them to reduce the time of travel of the slide 4, you can accelerate and Opera is the Oia change stamp.

In this case, in the above-described embodiment, the position of the lower end of the mechanism 16, the transmission power is measured by determining the angle at which rotates the servo motor 3, however, it is possible to measure the position of the lower end of the transmission capacities of 16, using a linear displacement sensor or the gauge.

In the above-described embodiment, the height of the mechanism 20 adjustment of the slide is measured by the linear displacement sensor or measuring with a ruler, however, in the structure using a sensor of angular position or resolver can be measured angle is rotated, the motor 22 of the drive mechanism, the adjustment of the slide, and to calculate the height using the formula for the conversion of the angle of rotation of the engine at a height determined by the mechanism.

In the above-described embodiment, the height of the mechanism 20 adjustment of the slide adjust, powering the engine, however, such adjustment can be accomplished using a hydraulic or pneumatic cylinder.

In the above-described embodiment, the height adjustment stamp carried out in step 5, but if necessary it can be carried out at other stages. In this case, another step is to determine the amount of movement of the slide 4 with the value of the height adjustment of the stamp.

If the media is missing the adjustment mechanism of the slide, the position of the lower con is but the mechanism of transmission power can be changed, lowering operation of the adjustment mechanism of the slide on the stage 5 and adjusting the difference between the height of the lower surface of the slide at the bottom dead point for the production of the current stamp and the height of the lower surface of the slide at the bottom dead point for the production of the next stamp. In this case, this operation is often carried out so that the lower end of the mechanism for the transfer of power did not reach the bottom dead point, even during production (products), and the direction of rotation of the servo motor is changed to the opposite before it reached the lower dead point to move the slider up.

The above-described variant of the present invention, which is shown for example only and the scope of the present invention is not limited to the described option. Scope of the present invention is defined by the appended claims and includes all modifications within the limits defined by the claims.

1. Change the stamp in the press, made with the possibility of positioning of the slide in any position within the range of movement of the slide by converting the rotational motion of the servo motor, which serves as a press drive, the lifting movement of the slide through the mechanism of power transmission and control servo motor, including the steps which move the slider to a position in which the upper part of the stamp sets in the lower part of the stamp, disconnect the upper part of the stamp from the slider, move the slider up to the specified position, not reaching the upper dead point so as to place it in the standby position, remove the upper and lower part of the stamp from the press and set the upper and lower parts of another stamp in the press, put the slide in position for fastening the upper part of the stamp to the slide, attach the upper part of the stamp to the slider and raise the slider to the position from which you are allowed to start your stamping operations.

2. The method according to claim 1, wherein the press supply adjustment mechanism of the slide regulating the height of the stamp, and actuate the adjustment mechanism of the slide to change the height adjustment mechanism of the slide with adjustable height to perform the operation of forming the initial stamp of adjusting the height to perform the operation of forming the next stamp.

3. The method according to claim 2, wherein the step of modifying the height of the adjustment mechanism of the slide execute in parallel with the stage of extraction of the upper and lower parts of the stamp from the press and set the upper and lower parts of another stamp in the press.

4. The method according to claim 1, wherein the transmission mechanism of the power of the press is formed by a mechanism in which the slide at each stage, including the movement of the slide, does the rise in accordance with the unidirectional rotation is the group of servo motor, and the amount of movement of the slide during movement of the slide down and during the movement of the slide up asymmetric relative to the angle of rotation of the servo motor, whereby the slide is moved up and down using the site, the amount of movement is greater relative to the angle of rotation of the servo motor.

5. Press containing a servo motor, which is driven press the slide against the lower surface of which is attached the upper part of the stamp to move up and down, the latch stamp holding the top part of the stamp to the bottom surface of the slide with removable, the mechanism of power transmission, which converts the rotation of the servo motor to the lifting movement of the slide, and the control unit, managing at least servo motor and release of the stamp, while the control unit is arranged to position the slider in any position within its range of movement by controlling the servo motor, the control unit has the ability to move the slide bar to the position in which the upper part of the stamp sits on the lower part of the stamp during the change of the stamp, and then controls the release of the stamp so as to disconnect the upper part of the stamp from the slider, and then controls the servo motor so as to raise the slider to a predetermined position not reaching the upper dead point, and re is the input of the slider in the standby mode, lowers the slide in position for fastening the upper part of the stamp to the slide after the top and bottom of the stamp will be removed from the press and the press will be installed in the upper and lower parts of another stamp, then controls the clamp for fastening the upper part of the stamp to the slider, and then controls the servo motor so as to raise the slide in position, which allowed the working stamping operation.

6. The press according to claim 5, which contains the adjustment mechanism of the slide regulating the height of the stamp, and the control unit controls the adjustment mechanism of the slide so as to change the height adjustment mechanism of the slide with adjustable height to perform the operation of forming already installed stamp on adjusting the height to perform the operation of forming the next stamp in the time stamp.

7. The press according to claim 6, in which the control unit performs control to change the height adjustment mechanism of the slide during the change of the stamp in parallel with the operation of extraction of the upper and lower parts of the stamp of the press installation press the upper and lower parts of another stamp.

8. The press according to claim 5, in which the mechanism of the transmission power of the press established a mechanism through which the crawler performs a rise in accordance with the unidirectional rotation of the servo motor, and the amount of movement of the floor is una asymmetric during the movement of the slide down and during the movement of the slide upwards relative to the angle of rotation of the servo motor, and the control unit controls the servo motor to move the slider up and down, using the area on the side on which the amount of movement is greater relative to the angle of rotation of the servo motor during the movement of the slide when changing the stamp.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used in designs of crank presses intended for separation jobs. Proposed press comprises foundation with cylinder with piston rigidly secured therewith. Said piston is licked via rod with slider of actuator consisting of crank and rod. Besides proposed press comprises compressor and internal air lines incorporating gates, check valves, inlet and adjustable outlet valves to communicate cylinder chamber with the compressor, outer air lines and atmosphere. Note here that pressure is generated inside said cylinder to act on slider with constant force when it moved from the start of plastic deformation beginning to its extreme position. Besides force acting on the slider can be decreased to zero when it moves from its extreme operating position to extreme initial position.

EFFECT: higher reliability and longer life.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and can be used in presses for adjusting load acting on press pad. Pad is arranged under the press slider. Proposed device comprises hydraulic cylinder that makes proposed press pad, hydraulic control valve communicated therewith, hydraulic source, unit to control degree of opening, unit to determine pad lowering rate and unit to correct signal. Said hydraulic source communicates via hydraulic control valve with aforesaid cylinder. Unit to control degree of opening generates signal to regulate degree of opening of aforesaid hydraulic control valve proceeding from preset pressure in hydraulic cylinder. Unit to correct signal corrects control signal in compliance with preset pressure in hydraulic cylinder and press pad lowering rate.

EFFECT: automatic control over load on pad.

5 cl, 5 dwg

Servopress-machine // 2400368

FIELD: electrical engineering.

SUBSTANCE: invention relates to press forming equipment. Proposed machine comprises extrusion ram, servomotor, drive power supply and capacitor. The latter is connected in between power supply positive and negative channels. Said channels connect power supply and motor drive control section. Servomotor starts running on the basis of data on extrusion ram motion on feeding electric power for forming purposes. Machine can define if drive power supply voltage between aforesaid positive and negative channels is lower than servomotor induced voltage. If it is, data related with machine speed are corrected on the basis of data on extrusion ram motion.

EFFECT: stable operation.

18 cl, 7 dwg

FIELD: technological processes; engines and pumps.

SUBSTANCE: two eccentric shafts are mounted on press frame on both sides in respect of slab course and parallel to it. The shafts are connected to a drive and linked by connecting rod to two slides positioned in frame guides. Two tables with strikers are mounted on slides by four screws of press height adjustment mechanism. Adjustment mechanism features closed height adjustment drive with transmission shaft. The screws are connected in pairs by cogwheels fixed at them. Helical curves of adjoining screws have different direction. Two opposite screws of opposite slides are connected by moving spline joint to the transmission shaft of closed height adjustment drive.

EFFECT: increased precision of process.

1 dwg

FIELD: heavy engineering industry; production of the drives of the mechanical presses.

SUBSTANCE: the invention is pertaining to the field of heavy engineering industry, to forging, in particular, to production of the drive of the mechanical press and may be used at designing of the drive of the presses with the design drawing providing for usage of the collapsible connecting rod. The drive contains the main and additional electrical engines, the reduction gear of the main shaft and the reduction gear of the additional shaft. The reduction gear of the additional shaft is made in the form of the self-stopping reduction gear with the coaxial input and output shafts. The input shaft of the self-stopping reduction gear is connected to the rotor of the additional electrical engine, which stator is mounted on the additional base. The technical result of the invention is simplification the mechanical press design.

EFFECT: the invention ensures simplification the mechanical press design.

5 dwg

FIELD: machining by pressure.

SUBSTANCE: the invention is dealt with the field of machining by pressure and may be used in presses for pressing powder-shaped masses, in particular, the metal powder-shaped masses. The press contains at least one connecting rod, a crankshaft and a connected with it and capable to rotate gear with an eccentric crankshaft drive for driving the unit of the upper plunger. The gear is set in rotation at least by one engine using at least one worm gearing. The press is equipped with electronic control, which is supplied with a function of a reversing mode of operation of the crankshaft. At the press operation a run of the unit of the upper plunger is reversed shortly before reaching of the upper and-or the lower dead point of the eccentric crankshaft drive. The second alternative of operation of the press offers to regulate a run of the unit of the upper plunger so, that the lower dead point of the eccentric crankshaft drive is passing a short way. In result the invention ensures an increase of accuracy of produced pressed items and an over-all performance, and also an increase of the performance index of efficiency of the press operation and expansion of its operational capabilities.

EFFECT: the invention ensures increased accuracy of produced pressed items, over-all performance, increased performance index of the press operation efficiency and expansion of its operational capabilities.

15 cl, 2 dwg

The invention relates to the field of engineering, namely to control systems crank die forging presses

The invention relates to a press-forging equipment, in particular to designs of mechanical presses

Mechanical press // 2217314
The invention relates to forging machinery, namely, mechanical presses

The invention relates to mechanical presses for cutting blanks and stamping of sheet material

FIELD: machine building.

SUBSTANCE: invention refers to mechanical power amplifiers and can be used in power installations. The power amplifier consists of a crankshaft coupled with a toggle joints by means of a connecting rod and of a slider. The slider performs reciprocal motions and with its one end it is tied with one toggle joint. A mechanism of motion conversion is conjugated to the slider on its another end. The said mechanism has an output shaft and is designed for conversion of reciprocal motion of the slider into a rotary motion of the output shaft. The crankshaft and toggle joints travel through the position of toggle joints twice straightening per one revolution of the crankshaft.

EFFECT: transfer of all power produced on slider to another mechanism.

1 dwg

FIELD: food industry.

SUBSTANCE: invention is related to food industry and may be used for production of striped confectionary products. The device contains means for coextrusion of at least two different primary products into a common flow so that the primary products are combined to form a coextruded flow of the product containing levelled layers of the primary products. The device also contains an extruder head for delivery of a layered coextruded flow of the product. The extruder head contains at least one body element constituting a channel and an essentially helical blade which is rigidly fixed in the said channel for its division into two essentially helical ducts. The blade contains a bit which is positioned so that the layered coextruded flow of the product is divided into two separate coextruded product subflows. The extruder head is designed so that to enable subsequent rejoinder of the subflows into one rejoined flow of the product containing a greater number of levelled layers of the primary products. An appropriate method is also proposed.

EFFECT: invention allows to combine two or more different primary products for a striped product formation.

18 cl, 10 dwg

FIELD: process engineering.

SUBSTANCE: top wedge mechanism comprises carriage saddle, saddle guide element and drive element, tool holder with at least one side surface that retains the tool. Proposed holder can be removed downward relative to top wedge mechanism in its top working position. Said holder incorporates at least one guide prism and/or at least one prismatic recess and/or at least one prismatic section to be placed onto guide prism. Wedge mechanism tool holder comprises also at least one jointing device to allow kinematic or force closure with drive element.

EFFECT: higher accuracy of machining due to higher accuracy of positioning.

18 cl, 16 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used in designs of crank presses intended for separation jobs. Proposed press comprises foundation with cylinder with piston rigidly secured therewith. Said piston is licked via rod with slider of actuator consisting of crank and rod. Besides proposed press comprises compressor and internal air lines incorporating gates, check valves, inlet and adjustable outlet valves to communicate cylinder chamber with the compressor, outer air lines and atmosphere. Note here that pressure is generated inside said cylinder to act on slider with constant force when it moved from the start of plastic deformation beginning to its extreme position. Besides force acting on the slider can be decreased to zero when it moves from its extreme operating position to extreme initial position.

EFFECT: higher reliability and longer life.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used in designs of crank presses intended for separation jobs. Proposed press comprises foundation with cylinder with piston rigidly secured therewith. Said piston is licked via rod with slider of actuator consisting of crank and rod. Besides proposed press comprises compressor and internal air lines incorporating gates, check valves, inlet and adjustable outlet valves to communicate cylinder chamber with the compressor, outer air lines and atmosphere. Note here that pressure is generated inside said cylinder to act on slider with constant force when it moved from the start of plastic deformation beginning to its extreme position. Besides force acting on the slider can be decreased to zero when it moves from its extreme operating position to extreme initial position.

EFFECT: higher reliability and longer life.

2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy, namely, to production of cutting blades with undercuts. Moulding cavity made up of male and female dies and bottom punch arranged in female die are pre-filled with a certain amount of powder. Powder pressing is performed by top punch introduced via male die and bottom punch introduced in moving them toward each other to produce a blank. Each punch has opposite surface and mounting surface and peripheral surface arranged there between to form punch edge on intersection with pressing surface. Moulded blank is withdrawn by separating male die from female die and punch.

EFFECT: producing blanks with undercuts, reducing powder adhesion to mold elements.

12 cl, 13 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used in machining random structure materials, particularly metallised rubber. Proposed method comprises producing wise sections in the form of extended spirals, forming flat workpiece from spiral sections, coiling into roll, placing produced workpiece in injection mould and moulding said workpiece in several passes. Elastic medium element is fitted into mould on one side of workpiece or on its both sides. Moulding the workpiece is performed by axial squeezing of workpiece together with elastic medium elements that convert axial compression in radial pressure onto workpiece.

EFFECT: providing necessary elastic properties on moulded part in both radial and axial directions, possibility to produce wide range of solid and hollow parts.

1 ex, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and can be used in presses for adjusting load acting on press pad. Pad is arranged under the press slider. Proposed device comprises hydraulic cylinder that makes proposed press pad, hydraulic control valve communicated therewith, hydraulic source, unit to control degree of opening, unit to determine pad lowering rate and unit to correct signal. Said hydraulic source communicates via hydraulic control valve with aforesaid cylinder. Unit to control degree of opening generates signal to regulate degree of opening of aforesaid hydraulic control valve proceeding from preset pressure in hydraulic cylinder. Unit to correct signal corrects control signal in compliance with preset pressure in hydraulic cylinder and press pad lowering rate.

EFFECT: automatic control over load on pad.

5 cl, 5 dwg

Bottom-drive press // 2401714

FIELD: process engineering.

SUBSTANCE: invention relates to plastic material forming, particularly to plastic material forming equipment. Proposed press comprises annular holder preventing folding, forming assembly with bottom press tool, press unit to clamp press tool including top press tool and device to apply pressing force to top press toll from its rear. Bottom press tool rests on slider furnished with its lifting/lowering drive mechanism. Top press tool has clamping part interacting with annular holder. Clamping force is applied to top press tool rear after final stage of lowering press assembly for clamping press tool and top press tool.

EFFECT: higher quality of forming and efficiency.

11 cl, 26 dwg

Servopress-machine // 2400368

FIELD: electrical engineering.

SUBSTANCE: invention relates to press forming equipment. Proposed machine comprises extrusion ram, servomotor, drive power supply and capacitor. The latter is connected in between power supply positive and negative channels. Said channels connect power supply and motor drive control section. Servomotor starts running on the basis of data on extrusion ram motion on feeding electric power for forming purposes. Machine can define if drive power supply voltage between aforesaid positive and negative channels is lower than servomotor induced voltage. If it is, data related with machine speed are corrected on the basis of data on extrusion ram motion.

EFFECT: stable operation.

18 cl, 7 dwg

Holding device // 2324563

FIELD: mechanic.

SUBSTANCE: holding device includes, as a minimum, several pulling clips, each of which contains, as a minimum, one pulling frame with a closed circuit and two segments separated and located oppositely to each other; between the segments, forming device is located. Each of the segments has supporting surfaces. Each of the pulling clips is designed with the possibility to rotate at one hinge, as a minimum. Also, there is a supporting surface located above the forming device or on its surface, and serving as a support for the supporting surface of the pulling clip, and a device for providing a certain holding force designed as several power components. The pulling frame material is a reinforced compound. The device for producing metal parts by hydro-forming includes, as a minimum, closed forming instrument and holding device. The device for holding the tool includes, as a minimum, pulling clip with at least one closed circuit pulling frame with two segments separated and located oppositely, to each other, between which the forming tool is located. Each segment has supporting surfaces. The device also has supporting surfaces and designed based on the condition of providing certain holding forces between the supporting elements of the pulling clip and a surface located higher or lower of the tool. The line of application of the composite force resulting from the holding forces is located parallel and in a plane, which does not diverge essentially from the plane dividing the pulling clip into two halves in the axial direction. The material for the pulling frame is a reinforced alloy.

EFFECT: increase in performance and quality of manufactured products.

12 cl, 6 dwg

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