SU149301A1 - A device for laying a frame thread on a sewing buttonhole machine - Google Patents

Description

The invention relates to a configuration for crocheting a sewing machine on a sewing machine of a class 25-A of the Podolsk Mechanical Plant, which currently does not have this machine equipped, which makes it necessary to double-check, which reduces the performance when winding loops on the top jersey.

The described device for laying the gimp yarns contributes to an increase in the performance when brooming the loops, since there is no need to double-loop the loop, improving the presentation of the product at the same time.

The device, fitted to the PMZ 25-A class sewing machine, is made hinged on a hanging frame of a horizontal, spring-loaded two-armed lever, fitted on the shoulder, adjacent to the needle machine, on the right and left edges of the broomstick loop. and a tooth interacting with the slots of the mixing insert fixed on the base of the machine, moreover, to set this lever in motion, the device is equipped with a vertical two-arm lever, on the upper arm of which is fixed A knife interacting with the roller of the lever for switching the frame of the needle bar of the sewing machine, and the lower arm is equipped with a pusher that can be moved from the second arm of the horizontal lever carrying the spreader, and for returning the spreader to the initial position, the hanging frame of the two upper horizontal arm is connected with a fixed on the Mai; Ine angular lever, receiving kacha1elny movement from the lever of raising the foot of the machine.

FIG. 1 shows a kinematic diagram of a looped sewing needle with a fixture :: for laying a gimp; on

No. 149301. 2 -, j, :: -

FIG. 2 is a device diagram; in fig. 3 - loop diagram with frame thread. - -

Attachment for laying the gimp yarn along the right edge 2 and left edge 3 of the looped over loop 4 is designed as hinged on the hanging frame 5 of the horizontal two-arm lever 6 under the influence of the spring 7. On the right shoulder of the lever 6 adjacent to the needle bar 8 the sewing machine, the staple 9 of the gimp thread / along the right and left edges of the looped loop 4 and the tooth 10, which interacts with the grooves P of the offset liner 12 fixed to the base 13 of the machine. In order to set the lever 6 in motion, the device is equipped with a vertical two-arm lever 14, on the upper shoulder of which a bracket 15 is fixed, which interacts with the roller 16 of the lever 17 for switching the needle bar 8 of the sewing machine, and the lower arm is equipped with a pusher / 8 that interacts with the second (left) horizontal shoulder lever 6. To return the spreader to its original position after laying the gimp thread / along the edges of the loop, the hanging frame 5 of the two shoulders horizontal lever 6 is connected by a pull 19 with attached to the corner lever 20, receiving movement from the lever 2 lifting paws maschina.

The device for overlaying the loop works as follows.

From the moment of turning on the sewing loop stitch when stitching loop 4 to the back bartack 22, the spreader 9 is 1.5 mm ahead of the needle 23 and does not make any movements. The gimp / at this time is laid along the left edge 3 of the looped over loop. When the cam 24 attached to the overlapping guide disk 25 approaches the roller 16 of the needle bar frame switching lever 17 and deflects the lever 17, the gimp filler mechanism is activated. When the lever 17 is deflected, the roller 16 acts on the square 15 of the two shoulders lever 14. At the same time, the lower lever arm / 4 through the pusher / 8 imparts a swinging movement to the horizontal two shoulders lever 6 supporting the spreadsheet 9 of the frame thread /, its tooth 10 moves to the upper plane of the insert 12 offset and the stacker stops. At this time, the loop 4 is fastened.

As soon as the roller 16 passes the cam 24, the vertical two-arm lever 14 will return to the original polpzhenna under the action of the spring 26, releasing the horizontal lever 6, as a result of which the spring 7 moves the lever 6 forward and its tooth 10 jumps off the upper plane of the bias 12 and moves into its groove //, but since the difference in height between the liner slots is 2 mm, the spreader 9 stands in front of the needle 23 to lay the gimp thread / along the right edge 2 loops. Setting the front tack 27 occurs without a frame thread.

The spreader 9 returns to its original position under the action of the lever for lifting the foot 21, which acts on the angular lever 20 and the latter carries with it the tug 19, but since the ha ha 19 is fixed with the hanging frame 5, on which the lever 6 of the spreadsheet 9 is reinforced, Cho The young one pulls the lever 6 with the spreader 9 into the rear position. In this case, the tooth 10, the transition from the groove // of the insert to its upper plane, detounds the spreading of the spreading device 9 from one side of the needle to the other, after which the next loop is overlaid in the same way with the laying of the frame thread.

The industrial usefulness of this proposal was confirmed by the Moscow Regional Economic Service, at the conclusion of which the proposed device provides a benign treatment of the loops on knitwear and significantly improves the presentation of the products.

The described device is implemented in the factory. Dzerzhinsky.

Subject invention

A device for laying a frame yarn on a sewing looper, characterized in that in order to increase the productivity of knitting loops on knitwear and to improve the presentation of the latter, the Omo is made in the form of a hinged reinforced on a hanging frame of a horizontal spring loaded two-arm lever, fitted on a shoulder, and there are a lot of pups on the shoulder. to the needle of the maschina, a frame thread maker on the right and left edges of the stitch loop and a tooth that interacts with the slots of the displacement insert fixed on the In order to set this lever in motion, the device is equipped with a vertical two-arm lever, on the upper arm of which there is a bracket that interacts with the roller of the lever for switching the needle bar frame, and the lower arm is equipped with a pusher that interacts with the second arm of the horizontal lever carrying the thread spreader, moreover, to return the spreader to its initial position, the hanging frame of the two-shouldered horizontal lever is connected by a rod with an angular lever fixed to the mat, receive swinging movement from the lever of raising of a paw of a manshna.

- 3 - № 149301

FIG. 2

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Fig.Z