Machine for making cut-through expanded net of sheet material

FIELD: forging press equipment, namely machines for forging nets.

SUBSTANCE: machine includes housing supporting drive unit, eccentric shaft, movable beam with cut-through cutter, table with stationary cutter and mechanism for feeding sheet material. Cut-through cutter is double-sided one and it may be readjusted. Cutter carrying beam is joined with eccentric shaft through first kinematic circuit for providing rocking motion of beam and through second additional kinematic circuit for providing cross motion of beam. First kinematic circuit includes crank joined with eccentric shaft, slides with stops and main adjusting connecting link. Second kinematic circuit includes cam mechanism, additional adjusting connecting link and rocker arm.

EFFECT: enlarged manufacturing possibilities of machine, increased useful life period of machine.

3 dwg

 

The invention relates to the forging industry, in particular to machines for punching mesh sheet material.

Known press for the production of expanded metal mesh described in the author's certificate of the USSR No. 1618485, B 21 D 31/02, 28/00, published 07.01.1991,

Known press comprises a frame mounted on it the lower work tool, the timber is placed in a vertical guide frame with the possibility of reciprocating movement, pivotally connected through the intermediate piece with the frame and connected to the drive shaft by a pair, each element of which is made in the form of the pressure element is eccentric with different values of the eccentricity placed on the drive shaft, connecting rod, connected by a hinge couples one end of the beam and at the other end to the pressure element, the upper working tool mounted on the beam, the ratchet mechanism with gears providing a supply of sheet stock.

The disadvantages of the press are limited technological capabilities associated with the impossibility of providing infinitely variable feed control sheet, the complexity of the design press and the complexity of its configuration.

Closest to the technical nature of the claimed invention, selected as a prototype, one is by a machine for making expanded metal mesh sheet material, described in the patent of the Russian Federation No. 2198758, B 21 D 47/02, 31/02, published 20.02.2003,

The known machine comprises a frame, a drive eccentric shaft, blade beam, a slider with a cutting knife, a table with a fixed knife, a feed rolls, a mechanism for continuous feed sheet stock.

The disadvantage of this machine and used cutting tool is the low durability. Low durability of the machine is with high dynamic loads arising from the forces of metal cutting simultaneously over the entire length of the cutting knife, making a plane-parallel movement relative to the fixed knife. Low durability of the cutting tool and its limited technological capabilities related to the fact that it is made one-way.

In addition, disadvantages is also a large consumption of machines and large kinematic errors associated with the design feature of the movable beam, which is a slider with a fixed cutting knife with the possibility of longitudinal movement relative to the movable beams. This design requires additional kinematic pairs between the slide and beam and high precision, which is not always carried out, therefore, leads to the inevitable kinematic errors.

Technical ass is her invention is to improve durability of the machine and used cutting tool, expanding the technological capabilities of the tool, reducing the material consumption of the machine and reduce its kinematic error.

This object is achieved in that in a machine for making expanded metal mesh sheet material comprising a frame, a drive eccentric shaft, the movable blade beam with cutting knife, kinematically connected with the eccentric shaft, a table with a fixed knife and a mechanism for continuous feed of sheet material, equipped with rollers according to the invention the cutting knife is Ambidextrous and are directly attached to the knife beam with reinstallation, the kinematic connection of knife beam with eccentric shaft made in the form of the first main kinematic chain to provide swinging movement of the knife beam with cutting knife relative to the swing axis and the second additional kinematic chain to provide lateral movement of the knife beam with cutting knife, with the first main kinematic chain is made in the form of the associated eccentric shaft of the crank, slider with a stopper for linear regulation mentioned crank, a slide with a stopper for linear adjustment of one of the ends of the knife beam and the main control connecting rod pivotally associated at one end with the slide d is I linear regulation of the crank, and the other with the slide for linear adjustment of one of the ends of the knife beam, the second additional kinematic chain to provide lateral movement of the knife beam with a cutting knife is made in the form associated with the eccentric shaft by means of a chain drive of a Cam mechanism in the form of the Cam and connected to the mounted on the frame by the hinge of the follower is configured to move through the fist and is equipped with a slider with a stopper for linear regulation, additional regulating rod and the rocker arm, the swing axis of which is connected through a regulating slide with the frame, one end pivotally connected with the second end of the knife beam, and the second is equipped with a slider with a stopper for linear regulation of its length, the primary and secondary regulating rods are made in the form of levers, the lever additional connecting rod consists of two parts, the first of which, bearing on one end still connected to her flat with a stopper for linear regulation of the second part, another end pivotally connected with the slide for linear regulation of the pusher, and the second made with the possibility of linear regulation one end through said slider with a stopper and the other end pivotally connected with the slide for linear regulation to which mysla, additional rod is made with the ability to regulate its linear dimensions to ensure the location of the axis of swing of the knife beams in the extreme positions on a straight line coinciding with the line of ledges cutting knives in their lower position and the end position of the rocker - symmetrically relative to a line passing through the axis of swing of the rocker arm and perpendicular ledges cutting knives in the lower position.

By performing cutting knife double-sided, by fixing it directly on the blade beam with reinstall, due to the fact that the first main kinematic chain, ensuring the knife beam with cutting knife swinging movement, has associated with the eccentric shaft of the crank, linearly adjustable slide with the stopper, and regulating the main connecting rod pivotally connected at one end with the slide crank, the other end slide with stopper, linearly regulating one end of the knife beam, the second additional kinematic chain, ensuring the knife beam with cutting knife cross movement, provides a Cam mechanism associated chain the transmission eccentric shaft, a pusher which moves the fist is linearly adjustable slide with stopper and is connected to a hinge mounted on the frame, adjustable lighting angle which would be an additional rod, arm, the swing axis of which is connected through a regulating slide with the frame, one end of which is linearly adjustable slide to a stop and the other end pivotally connected with the second end of the knife beam regulating the primary and secondary rods made in the form of levers, the lever regulating additional connecting rod consists of two parts, the first part of which one end pivotally connected with the slide of the plunger, the other end still connected with the slider of the first part of the connecting rod, the second part of which one end pivotally connected with the slide arm, the other end of the linearly adjustable slide with the stopper, while the axis of swing of the knife beams in the extreme positions is straight line coinciding with the line of ledges cutting knives in their lower position and the end position of the beam is symmetrical about a line passing through the axis of swing of the rocker arm and perpendicular ledges cutting knives in the lower position, increases the durability of the machine and used cutting tool, expand the technological capabilities of the tool decreases the consumption of the machine and reduces its kinematic errors.

Thus, the totality of the claimed features can improve the durability of used machines and cutting tools, to expand technologically the possibilities of the instrument, to reduce the consumption of the machine and its kinematic error.

The inventive machine for making expanded metal mesh sheet material is new, differing from the prototype of the above symptoms, and achieving perceived by the applicant of the technical result.

The inventive machine for making expanded metal mesh sheet material meets the criterion of inventive step, because the known effect called distinctive features on the specified technical result is not confirmed by the known technical solutions.

The inventive machine for making expanded metal mesh sheet material can be manufactured on standard equipment and find wide application in the national economy and therefore meets the criterion of "industrial applicability".

The essence of the proposed machine for making expanded metal mesh sheet material is illustrated by drawings, where:

figure 1 is a kinematic diagram of a machine for making expanded metal mesh sheet material;

figure 2 - the same;

figure 3 - the same, the section a-A.

Machine for making expanded metal mesh comprises a frame 1 on which is placed an electric actuator 2, the eccentric shaft 3, the Cam, milling the m 4, table 5 fixed knife 6, the mechanism 7 stepless feed sheet material from the rolls 8, 9, beam 10 with the cutting knife 11, connected the two ends 12, 13 through the primary 14 and 15 additional kinematic chains with Cam shaft 3. Electric actuator 2 is connected with the eccentric shaft 3 by a belt 16, the eccentric shaft 3 is connected with the Cam mechanism 4 with a chain 17 (Fig 1).

The main kinematic chain 14 connects the eccentric shaft 3 with the end 12 of the beam 10 and consists of a crank 18, linearly adjustable slide 19 with the stopper 20 and regulating the eccentricity of the shaft 3, the main regulating rod 21 made in the form of a lever and connected by a hinge 22 with the slide 19 and the hinge 23 slide 24 with the stop 25, the slider 24 moves linearly on the end 12 of the beam 10 and regulates the stopper 25 of its length (Fig 1, 2).

Additional kinematic chain 15 connects the eccentric shaft 3 with the end 13 of the beam 10 and consists of a linked chain drive 17 with the eccentric shaft 3 is a Cam mechanism 4, the pusher 26 which moves the fist 27, linearly adjustable slide 28 with the stopper 29 and is connected to the hinge 30, mounted on the frame 1, of additional regulatory rod 31, is made in the form of a lever consisting of two parts 32, 33, the first part 32 whose one end is connected ball is Il 34 slide 28, the other end still connected with the slider 35 with the stopper 36, and the second part 33 of which one end is linearly adjustable slide 35 with the lever 36, the other end connected by a hinge 37 slide 38 with the stop 39 of the rocker arm 40, the axis of swing which hinge 41 is connected through a regulating slider 42 with the stopper 43, with the frame 1, one end of which is linearly adjustable slide 38 with the stop 39, the other end of the hinge 44 is associated with the second end 13 of the knife beam 10 (Fig 1, 2).

Mechanism 7 stepless feed sheet material from the rolls 8, 9 consists of a crank 45, linearly adjustable slide 46 and the stopper 47, regulating the eccentricity of the shaft 3, the connecting rod 48 connected through a hinge 49 to the slider 46 and through the hinge 50 with one end of the rocker arm 51, the other end is still connected with the outer yoke 52 overrunning clutch 53, the inner yoke 54 which is still connected with the worm shaft 55 of the gear 56, the worm wheel 57 which is connected with a chain 58 with one end leading roll 8, the other end of which through the transmission gear 59 is connected with the slave roller 9 (Fig 1, 2).

Cutting knife 11 is Ambidextrous with cutting edges 60, 61 with the possibility of relocating to the beam 10 by means of screws 62 (Fig 3).

The machine operates as follows. With electric drive 2 rotation by means of a belt transmission is 16 is transmitted to the eccentric shaft 3, from which the power flux diverges in three directions.

The first thread is on the main kinematic chain 14 so. With the eccentric shaft 3 through a revolving crank 18, linearly adjustable along the length of the slide 19 with the stopper 20, the hinge 22, the main control rod 21, the hinge 23, the RAM 24 with the stop 25 at the end of 12, linearly adjustable along the length of the slide 24 with the stop 25, the knife beam 10 with a stationary cutting knife 11, through its lifting and lowering at a given angle relative to the hinge 44, not participating in this movement (Fig 1, 2).

The second stream is on additional kinematic chain 15 so. With the eccentric shaft 3 through a chain drive 17 on the Cam 27 and the Cam mechanism 4, with the Cam 27 on the plunger 26, making swinging movement about the hinge 30, linearly adjustable along the length of the slide 28 with the stopper 29 relative to the same hinge 30, the hinge 30, additional regulating rod 31 of the two parts 32, 33, linearly adjustable along the length of the slider 35 with the stop 36, the hinge 37, the slider 38 with the stopper 39, linearly regulating the length of the rocker arm 40, the rocker arm 40, resting on the hinge 41, through the hinge 44 to the second end 13 beams 10 knife 11, carrying their cross motion required for cutting and extraction of the next row of the grid, out of the transverse process p is motion relative to the previous row by half the length of the cell (Figure 1, 2).

Swinging movement of the beam 10 in combination with the transverse motion gives the opportunity to prosecute and pulling the sheet material, the protrusions of the knife 11 sequentially, using the effect of "scissors".

A third thread is with the eccentric shaft 3 through a revolving crank 45, linearly adjustable along the length of the slide 46 with the stopper 47, the hinge 49, the rod 48, the hinge 50, the rocker 51, swinging relative to the worm shaft 55 and is connected to the outer yoke 52 overrunning clutch 53, the inner yoke 54 which is connected with the worm shaft 55 of the gear 56, through the worm wheel 57 on the chain drive 58, the leading roller 8 and through the transmission gear 59 on the driven roller 9, by applying a sheet material for the next punching and drawing.

For quality manufacturing expanded metal mesh machine has the following types of regulations and mechanisms for their implementation.

Adjusting the magnitude of the lifting knife beam 10 relative to its lower position is carried out by changing the eccentricity - changing the position of the slide 19 with subsequent fixation of the stopper 20 on the crank 18.

Adjusting the initial horizontal position of knife beam 10 attached to it cutting knife 11 are two sliders 24, 42 in the position of the eccentric shaft, corresponding to its lower dead point, with p the next detent sliders 24, 42 stoppers 25, 43.

Adjusting the value of the cross feed knife beam 10 is sliding bearings 28, 38. To reduce the magnitude of the cross-feed movement of the slide 38 to increase the leverage of the rocker arm 40 and the slider 28 to reduce the shoulder of the plunger 26 with subsequent fixation of the slide 28, 38 stoppers 29, 39.

Selecting the linear dimensions additional regulatory rod 31, the machine is set up in such a way that the axis of swing of the knife beams passing through the hinge 44 parallel to the plane of movement of the sheet, in the extreme positions are located on a straight line coinciding with the line of ledges cutting knives in their lower position and the end position of the rocker arm 40 in the hinge 44 is symmetrical about a line passing through the axis of swing of the rocker arm in the hinge 41 and perpendicular ledges cutting knives in the lower position, which provides the same form of manufacture of the grid cell at the far left and the far right position of the beam 10 with the knife 11.

Linear dimensions additional regulatory rod 31 pick, linearly moving parts 32, 33 relative to each other by means of the slide 35 and locking the required length of the stopper 36. The angular displacement of the rocker arm 40 select linear movement of the slide 42 against the frame 1 by fixing it to the desired position by the stopper 43.

Adjustment of the feed rate if the starting material is carried out by moving the slide bar 46 relative to the crank 45 with subsequent fixation of the stopper 47.

The increase of the eccentricity increases the angle of swing of the rocker arm 51, therefore, the magnitude of the angular displacement of the feed rolls 8, 9, resulting in increased supply of sheet material per revolution of the eccentric shaft 3.

Coordination of thread power phase is illustrated by the position of the line passing through the top of the teeth of the cutting knife 11, which at the initial moment of time occupies a lower position (corresponding to position x-x in figure 1).

When lifting knife beam 10 to the provisions of the education gap between the cutting knife 11 and the fixed knife 6 (position x1-x1 in figure 1) begins to be transverse movement of the beam 10 with the knife 11 half the length of the grid cell by performing the Cam 27 with a particular profile, the movement of which is coordinated with the movement of the eccentric shaft 3 chain drive 17. At the same time moves the sheet material feed rollers 8, 9 due to the inclusion of overrunning clutch 53.

Ends of the transverse displacement of the beam 10 with the knife 11 and the feeding of sheet material at the time of lowering of the beam 10 with the knife 11, when she was at the top position (position x2-x2 1) and takes the position that provides the margin of the gap between the upper and lower blades 11, 6.

Cutting knife 11 as blunting of the cutting edges 60 is removed from the beam 10, turn the other one hundred and the one for the cutting edges 61 by screws 62.

In the invention improves the durability of the machine and used cutting tool, expand the technological capabilities of the tool decreases the consumption of the machine and reduces its kinematic errors by performing cutting knife double-sided, by fixing it directly on the blade beam with reinstall, due to the fact that the first main kinematic chain, ensuring the knife beam with cutting knife swinging movement, has associated with the eccentric shaft of the crank, linearly adjustable slide with the stopper, and regulating the main connecting rod pivotally connected at one end with the slide crank, the other end slide with stopper, linearly regulating one the ends of the knife beam, the second additional kinematic chain, ensuring the knife beam with cutting knife cross movement, provides a Cam mechanism associated chain drive with eccentric shaft, a pusher which moves the fist is linearly adjustable slide with stopper and is connected to a hinge mounted on the frame, regulating additional connecting rod, rocker arm, the swing axis of which is connected through a regulating slide with the frame, one end of which is linearly adjustable slide with the stopper, the other end of the hinge SV is connected with the second end of the knife beams, regulating the primary and secondary rods made in the form of levers, the lever regulating additional connecting rod consists of two parts, the first part of which one end pivotally connected with the slide of the plunger, the other end still connected with the slider of the first part of the connecting rod, the second part of which one end pivotally connected with the slide arm, the other end of the linearly adjustable slide with the stopper, while the axis of swing of the knife beams in the extreme positions are located on a straight line coinciding with the line of ledges cutting knives in their lower position and the end position of the beam is symmetrical about a line passing through the axis of swing of the rocker arm perpendicular to the line of tabs expanded knives in the lower position.

Machine for making expanded metal mesh sheet material comprising a frame, a drive eccentric shaft, the movable blade beam with cutting knife, kinematically connected with the eccentric shaft, a table with a fixed knife and a mechanism for continuous feed of sheet material, equipped with rollers, characterized in that the cutting knife is Ambidextrous and are directly attached to the knife beam with reinstallation, the kinematic connection of knife beam with eccentric shaft made in the form of the first main kinematic chain is to provide swinging movement of the knife beam with cutting knife relative to the swing axis and the second additional kinematic chain to provide lateral movement blade beam with cutting knife, the first main kinematic chain is made in the form associated with the eccentric shaft of the crank, slider with a stopper for linear regulation mentioned crank, a slide with a stopper for linear adjustment of one of the ends of the knife beam and the main control connecting rod pivotally associated at one end with the slide for linear regulation of the crank, and the other with the slide for linear adjustment of one of the ends of the knife beam, the second additional kinematic chain to provide lateral movement of the knife beam with a cutting knife is made in the form associated with the eccentric shaft by means of a chain drive of a Cam mechanism in the form of the Cam and connected with a fixed frame hinge of the follower is configured to move through the fist and is equipped with a slider with a stopper for linear regulation, additional regulating rod and the rocker arm, the swing axis of which is connected through a regulating slide with the frame, one end pivotally connected with the second end of the knife beam, and the second is equipped with a slider with a stopper for linear regulation of its length, the primary and secondary regulating rods are made in the form of levers, the lever additional connecting rod consists of two parts, the first of which, bearing on the bottom end still connected to her flat with a stopper for linear regulation of the second part, other end pivotally connected with the slide for linear regulation of the pusher, and the second made with the possibility of linear regulation one end through said slider with a stopper and the other end pivotally connected with the slide for linear regulation rocker, with additional rod is made with the ability to regulate its linear dimensions to ensure the location of the axis of swing of the knife beams in the extreme positions on a straight line coinciding with the line of ledges cutting knives in their lower position and the end position of the rocker - symmetrically relative to a line passing through the axis of swing of the rocker arm and perpendicular ledges cutting knives in the lower position.



 

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