Zigzag sewing machine

FIELD: textile, paper.

SUBSTANCE: zigzag sewing machine comprises mechanisms of a needle 1, a thread takeup 2, a cloth mover 3, a shuttle 4, kinematically joined to the main shaft 5, a bearing block of guide plates 8, including the main guide plate 8.1 of the automatic program of the cloth mover motions, and a device for change of a stitch shape 10 with a cam 13 for smooth adjustment of the stitch length and a transition guide plate to change a puller from the latter to the guide plate of the automatic program of the cloth mover motions and vice versa. According to the invention, the transition guide plate is arranged in shape as an additional guide plate 14 of the automatic program of the cloth mover motions. At the same time the guide plate is arranged so that its average diametre is located at one level with the cam 13 for smooth adjustment of the stitch length, which provides for smooth changeover of the puller 9 and makes it possible to produce additional stitches.

EFFECT: expansion of technological possibilities of zigzag sewing machine with minimum costs for production preparation.

2 cl, 10 dwg

 

The technical field to which the invention relates.

The invention relates to the textile industry, in particular for household sewing machines, zigzag, designed to run straight, zigzag, special and decorative lines.

The level of technology

Known sewing machine zigzag containing mechanisms needle, thread take-up, engine, fabric, hook, kinematically connected to the main shaft, a presser foot, the device changes the shape of the line sewing machine zigzag (Ed. mon. No. 2023086, IPC DV 3/02).

The device changes the shape of the lines placed in the head of the sewing machine and has an axle with a set of photo-ROM drive (block copiers), the pusher-puller, interacting with him, moving along the axis of the tracing drives through the nut mandrel. The latter is installed on the pilot screw, which is connected with the Maltese mechanism, the crank with Takami which is installed on the axis of the arm of switch types of lines, and a Maltese cross on the end of the lead screw.

The movement of the pusher (puller) with one of the tracing disk to another is carried out on P-obrazki trajectory, with its bias across the axis of the tracing discs produced under the action of the Cam.

The device is convenient in operation, but is complex because of the presence of the Maltese mechanism lead screw and the other is the ways.

Also known sewing machine zigzag containing mechanisms needle, thread take-up, engine, fabric, hook, kinematically connected to the main shaft, having a device to change the shape of the stitch sewing machine zigzag (Ed. mon. No. 1089189, IPC DV 3/02).

The device changes the shape of the lines contains a separate Cam software for engine control tissue, which is kinematically connected through two shoulders lever and the puller with the copier automatically program the movements of the engine tissue. Puller, in turn, kinematically connected with the spring loaded managing crank drive motor tissue. With the latter also kinematically associated Cam smooth regulation of stitch length. This kinematic relationship contains a spring-loaded rod with adjustable interacting with your finger on the control crank. Both these Cams secured to the handle control mechanism motor control tissue. By turning the knob include work in one or the other of the Cam and get either a complex line management engine tissue or zigzag line or a simple line.

The disadvantage of this solution should include its complexity, since it contains two kinematic chains, each associated with a control crank.

A sewing machine containing the tavern is SMI needle, the thread take-up, engine, fabric, hook, presser foot with the device to change the shape of the stitch (Patent RU №87706), which we have chosen for the prototype.

The device changes the shape of the lines in the famous invention includes a shaft mounted in the bearing housing, bearing block copiers, including the copier automatically program the movements of the engine tissue in contact with the puller mounted with the possibility of fluctuations in run mode line complex jigsaw software combined management mechanisms needle and engine tissue, kinematically connected with the throttle fabric, attached to the axis, and the Cam smooth adjustment of the size of the stitch length. According to the invention it is provided with a transitional copier to transfer puller with copier automatically program the movements of the engine tissue on Cam smooth adjustment of the size of the stitch length, made in one piece with the specified copier with narrow lateral cylindrical surface and a conical surface, which he paired with his depressions and protrusions. This narrow lateral cylindrical surface is flush with the Cam smooth adjustment of the size of the stitch length to which the puller has the ability to communicate in run mode, straight and zigzag article is the eyeglasses with the control mechanism of the needle.

The proposed device in comparison with the known provides a positive effect, which consists in simplifying the design, manufacturability manufacturing construction details.

The disadvantages of the known solutions should include not high enough degree of use of the occupied volume of the block copiers for decorative and special stitches on the sewing machine.

The technical result of the proposed technical solution is to eliminate this drawback by solving the technological capabilities of the sewing machine by replacing the transition copier to copier, providing new lines when working sewing machine in run mode complex jigsaw software combined management of needles and engine tissue.

The invention

This technical result is ensured by the fact that in the sewing machine zigzag containing mechanisms needle, thread take-up, engine, fabric, hook, kinematically connected to the main shaft mounted in the bearing housing, bearing block copiers, including the copier automatically program the movements of the engine tissue in contact with the puller mounted with the possibility of fluctuations in run mode line complex jigsaw software combined management mechanisms needle and DV is the engine tissue, the device changes the shape of the lines, including kinematically associated with the throttle fabric, attached to the axis, the Cam smooth regulation of stitch length and transition copier to transfer puller with the latest on the copier automatically program the movements of the engine tissue and Vice versa, according to the invention the transition copier made in the form of additional copier automatically program the movements of the engine tissue, while the diameter of the protrusions is made smaller than the diameter of the protrusions of the main copier automatically program the movements of the engine tissue, and the diameter of the depressions is made larger than the diameter of the depressions specified copier, the copier is made such that its average diameter equal to half the sum of the diameter protrusions and depressions located on the same level with the Cam smooth regulation of stitch length, with which the puller has the ability to communicate in run mode, straight and zigzag lines with the control mechanism of the needle.

And the fact that the puller is made in the form of a cone with a rounded top in the shape of a sphere.

Below the invention is illustrated by the example of execution with the accompanying drawings.

Brief description of drawings

Figure 1 shows the kinematic diagram of the device;

figure 2 - block copiers;

figure 3 - copiers and the automatic program of the displacement of the engine tissue;

figure 4 - cross section a-a figure 3 (rotated);

figure 5 is a section along b-B in figure 3 (rotated);

figure 6 - General view of the machine;

figure 7 - types of lines;

on Fig - main copier;

figure 9 - additional copy;

figure 10 - puller.

The implementation of the invention

Sewing machine zigzag contains mechanisms needle 1, the thread take-up lever 2, engine tissue 3, the hook 4, kinematically connected to the main shaft 5, mounted in the bearings 6 of the housing 7, the bearing block copiers 8, including copier 8.1 automatic programs displacement engine tissue in contact with the stripper 9 mounted with the possibility of fluctuations in run mode line complex jigsaw software combined management mechanisms needle and engine tissue, the device changes the shape of the lines 10, including kinematically associated with the handle 11 of the motor control fabric, attached to the axis 12, the Cam 13 smooth regulation of stitch length and transition the copier to transfer puller with the latest on the copier automatically program the movements of the engine tissue and Vice versa. According to the invention the transition copier made in the form of additional copier 14 automatic programmes displacement engine tissue, while the diameter of the projections 15 is made smaller than the diameter of the protrusions 16 of the main copier 8.1 Avtomaticheskaya displacement engine tissue, while the diameter of the depressions 17 are made larger than the diameter of the depressions 18 of the specified copier. Moreover, an additional copy is made such that its average diameter equal to half the sum of the diameter of the protrusions and the diameter of the depressions is at the same level with the Cam 13 smooth regulation of stitch length, with which the stripper 9 is able to communicate in run mode, straight and zigzag lines with the control mechanism of the needle 1.

The puller is made in the form of a cone 9.1 with rounded vertices in the shape of a sphere 9.2 (figure 10).

Software management mechanism 1 needle includes the aforementioned block copiers 8, pivotally mounted pusher 19 needles, interacting with one of the copiers in the block (by operator), transmitting the transverse oscillations of the frame 20 of the deflection of the needle carrying needle bar 21 with the needle 22 through the angular levers 23 and 24. Frame 20 is mounted on the axis 25, fixed in the housing 7 of the machine. Software control mechanism 3 engine tissue includes the aforementioned block copiers 8 with copier 8.1 automatic programs displacement engine tissue in contact with the stripper 9, pivotally mounted on the axis 26, the transmitting movement of the engine tissue 3.1 through an angular lever 27, the spring loaded techplace lever 28, the connecting link 29, the plunger 30, interacting with plates of three-centered Cam 31 fixed to superior the m shaft 5, the rocker 32, a carrier pivotally mounted in the lugs 33 of the lever 34 of the engine tissue 3.1.

With simultaneous operation of the sewing machine with software management mechanisms needle 1 and engine 3 tissue, i.e. when the plunger 19 of the needle communicates with one of the copiers 8.2 block copiers 8 and the stripper 9 communicates with the copier 8.1 automatic programs displacement engine tissue can get a more complex picture, such as "cell", "festoon" etc. (7, middle panel).

Receiving lines, shown at the bottom of figure 7, similar to the lines shown in the middle of Fig.7, is also carried out with simultaneous operation of the sewing machine with software management mechanisms needle 1 and the engine tissue 3, i.e. when the plunger 19 of the needle communicates with one of the copiers 8.2 block copiers 8, and the puller when it interacts with additional copier 14 automatic programmes displacement engine tissue. The lines obtained at the same time, smaller in height, but the density of frozen and "juiciness" superior lines obtained using the main copier 8.1.

To change the shape of the lines, for example with software control mechanism 1 needle, i.e. lines zigzag or straight stitch without the participation of the management software, you need the puller 9 translate from the copier 14 automatic programmes displacement engine the fabric on the Cam 13 smooth regulation of stitch length.

Additional copy 14 provides light without "jamming" translation puller 9 on the Cam 13. This is achieved due to the small difference in height between the secondary copier 14 and the Cam 13.

Translation puller 9 with the Cam 13 smooth regulation of stitch length on additional copier 14 occurs without "jamming" with the implementation of a stripper conical and small difference in height between them.

Translation of the stripper 9 is provided by rotating the handle 11 on the axis 12 is rigidly secured to it a gear 35 that communicates with the rail 36, which moves the puller 9 on the axis 26 (Fig 1).

The translation of the pusher 19, i.e. the selection dial is depicted in Fig.7 (upper figure), with one copier 8.2 to another copier 8.3, etc. in the unit of the copier is provided by rotation of the handle 37 of the selection dial on the axis 38 is rigidly secured to it a pinion 39 that communicates with the rail 40, which moves the plunger axis 41.

The design of the translation mechanism of the pusher 19 and the mechanism of translation of the stripper 9 is similar. They are mounted in a single unit housing 42, which is going offline, adjusted and then mounted on the machine body.

Also separately collected and mechanism of the legs 43 and then installing it in the machine casing.

The drawings depicted in Fig.7, is marked on the scale 44 of the cover 45. In this figure, Nanase the data on the handle 37 of the choice of the form of lines, correspond with the numbers on the scale 44 located under the kinds of lines. The scale 44 is fixed on the lid 45 of the machine.

Figure 1 is indicated:

46 of the actuator;

47 - arm reverse flow;

48 - lift arm pads;

49 - flywheel.

Additional copier 14 not only provides light to smoothly transfer puller 9 mentioned Cam 13, acting as a transition copier in a known solution, but to expand the technological capabilities of the sewing machine, complementing it with a whole range of new lines. I.e. the proposed solution is not just a device to change the shape of lines, but this is the first sewing machine with new technological possibilities. And all this thanks to the unique design of additional copier, and with minimal preparation of production.

Given the usefulness of the present invention, namely by expanding the technological capabilities of the sewing machine by providing additional copier for more complex lines, as well as the possibility of transfer puller with additional copier on Cam for smooth regulation of stitch length and Vice versa, i.e. the possibility of its implementation using the described means and methods of ensuring perceived by the applicant of the technical result, it can be argued that the claimed invention according to which tstuat the request of "industrial applicability".

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources and identify sources that contain information about the analogues, allows to assert that the proposed solution meets the requirement of "novelty" and "inventive step".

It should be noted that the advantage of the invention before the closest analogue (prototype) is represented by a set of essential features, each of which performs its function, and together, in conjunction, they solve the task of creating new products that meet modern requirements.

1. Sewing machine zigzag containing mechanisms needle, thread take-up, engine, fabric, hook, kinematically connected to the main shaft mounted in the bearing housing, bearing block copiers, including the copier automatically program the movements of the engine tissue in contact with the puller mounted with the possibility of fluctuations in run mode line complex jigsaw software combined management mechanisms needle and engine tissue, the device changes the shape of the lines, including kinematically associated with the throttle fabric, attached to the axis, the Cam smooth regulation of stitch length and transition copier to transfer puller with the last COP who R automatic movement program engine tissue and Vice versa, characterized in that the transition copier made in the form of additional copier automatically program the movements of the engine tissue, while the diameter of the protrusions is made smaller than the diameter of the protrusions of the main copier automatically program the movements of the engine tissue, and the diameter of the depressions is made larger than the diameter of the depressions specified copier, the copier is made such that its average diameter equal to half the sum of the diameter of the projections and depressions located on the same level with the Cam smooth regulation of stitch length, with which the puller has the ability to communicate in run mode, straight and zigzag lines with the control mechanism of the needle.

2. Sewing machine zigzag according to claim 1, characterized in that the stripper is made in the form of a cone with a rounded top in the shape of a sphere.



 

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