SU1715907A1 - Triple-thread chain-stitching sewing machine - Google Patents

Abstract

The invention relates to the equipment of the clothing industry, in particular, to a three-thread chain stitch sewing machine, and allows it to expand its technological capabilities. The sewing machine has a needle mechanism and a needle deflection mechanism, a deflector stacker mechanism, a thread feeder mechanism and a finger locking mechanism clamping mechanism during operation. The needle has a hook, which in turn seizes the threads from the thread feeders as they exit the material, piercing it, moving upwards. Each puncture of the material with a needle is accompanied by a stacker of metallized thread on the stencil or on the front side of the product. Thus, the positions of the metallized thread are fixed on the front side of the material according to the embroidery pattern. 2 hp f-ly, 10 sludge;

Description

The invention relates to sewing production equipment.

The aim of the invention is the expansion of technological capabilities by providing embroidery with a metallic thread.

Figure 1 shows the kinematic scheme of the embroidery machine; Figures 2 to 9 illustrate the stitch formation process; in fig. 10 - stitch, general view.

Textile material 1 is fixed in plates, cardboard template 2 defining the shape of embroidery, pre-rigidly attached to the material, metallized thread stacker 3 works with respectively left 4 and right 5 cotton threads, stitching metallized thread 6, fixed with cotton threads 7 and 8 with the needle 9.

From the source 10 of the light, beam 11 of light is projected onto the material, indicating the point

piercing the material with a needle-hook 9. The movement of the needle-hook, the liner and the stacker is realized by the sewing machine (Fig. 1).

The mechanism of the needle-hook 9 consists of two kinematic chains: for the vertical movement of the needle-hook and for the horizontal movement. Both mechanisms borrowed from the machine 26kl. PMZ.

The vertical movement mechanism comprises the following links: needle bar 12, connected pivot pin 13, connecting rod 14, crank 15, main shaft 16 connected to drive pulley 17. Pulley 17 is connected to a machine drive (not shown) through a belt drive.

The mechanism for the horizontal movement of the needle-hook consists of the following links: frame 18, pivot pin 19, fork 20, three-center cam 21, gear train 22 and 23 receiving movement from the main shaft 16 of the machine. Fork 20 soy (L

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dinena hinged with the stone 24 installed in the wings 25. The arm via the lever 26 is connected pivotally to the connecting rod 27.

The stacker mechanism 3 of the metallized thread contains a double-arm lever 28. One shoulder 29 of this lever is carried by the stacker.

3 and the light source 10, and the other through a ball joint is connected to the thrue 30. The mechanism provides for the possibility of adjusting the stacker relative to the needle-hook vertically and horizontally with screws 31 and 32, and the position of the light source 10 with a screw 33.

T ha 30 through a ball joint and double-arm lever 34 is connected to a connecting rod 35, which is pivotally connected with frame 18 and receiving movement from it. Mechanisms left

4 and the right 5 caps are arranged symmetrically relative to the needle-cap and have similar designs.

The mechanism of the cushion contains a holder 36, connected by a screw 37 with a pusher 38 and a screw 39 with a handler. The horizontal and vertical position of the picker relative to the needle-hook is adjusted by screws 37 and 39 respectively. The pusher 38 is pivotally connected to the rocker 40, on which roller 41, which fits into cam slot 43, is fixed.

The cam 43 is rigidly connected to the vertical shaft 44 supporting the gear wheel 45. The latter engages with the gear 46 sitting on the shaft 47. The shaft 47 through the gear pair 48, the inclined shaft 49 and the gear transmission 50 is connected to the main shaft 16 of the machine. Pusher 38 provides approach and withdrawal to the needle-hook during the period when the needle-hook is above the material.

The lateral movements of the swivel relative to the needle-hook for withdrawing its thread around the needle-hook are provided by a mechanism consisting of a slider 51, a two-arm lever 52 with a roller 53, which fits freely on the pusher 38, and which fits into the groove 43 from below.

To retract the stacker to the needle-hook in accordance with the deviation of the latter, the lever 52 is pivotally connected to the axis of the slider 54. The slider 54 contacts the two-arm lever 55 rigidly connected to the shaft 56. In turn, the shaft is connected to the connecting rod 57 through the column arm 58 is connected to the connecting rod 27 of the needle-hook deflection mechanism. The knee lever 58 in the lower part bears a knot 59, on which the operator acts with the knee.

The force contact between the slider 54 and the lever 55 is provided by the spring 60. The return of the knee lever 58 to the original

The position when the wheel retracts from the pack 59 is carried out by the spring 61. A similar device has a mechanism and a right-sided cap 5. The needle plate 62 has

circular in shape and rigidly connected to the vertical guide 63. Between the plate and the support of the guide 63 there is a spring 64 which holds the needle plate in the upper position. The guide 63 is connected via chain 65 to the pedal 66. The pedal is used to position the staples with the material on the needle plate. For the passage of the side faces under the handler and pick-ups the igloo-hook

5 is set in the lower position, the pedal 66 is pressed, the needle plate 62 is lowered. And between it, the gap and the injector form a gap, through which the plates are inserted into the working area of the machine.

0 The pedal is released and the spring 64 returns the needle plate to its original upper position. During operation, the main shaft of the machine is also driven by pressing the drive pedal and, in accordance with the profile of the pattern template, manually move the ends on the needle plate, and simultaneously act on the lever 58 through the stick 59 with a knee to change the deviation of the needle-hook in accordance with the width pattern.

During the rotation of the main shaft 1 b machines mechanisms work as follows. The crank 15, by moving the crank 14 through the connecting pin 13, causes

5, the needle bar is moved from bottom to top with the hook needle 9. When the needle is hooked out of the material, if it is deflected to the left, the pick-up 4 from the cam 43 begins to move. At the beginning of the rocker arm

0 40, turning counterclockwise, moves the pusher 38, and with it the pick-up 4 to the needle-hook. Simultaneously, the lever 52, turning clockwise, deflects the slider 51, and with it

5, the pusher 38 and the thrower 4 to the left relative to the needle-hook.

When the picker is on the same axis as the needle-hook, the lever 52 changes its direction of rotation and begins

0 wind up the needle hook, retract the needle around the hook needle.

After removal of the thread, the pusher 38 and the lever 52 change their direction of movement and

5 the cinch is in its original position. At this time, the hook needle begins to move downward and sucks the string on the material. When the needle-hook comes out of the material, the needle-hook deflection mechanism begins to move

frame 18 from left to right. Simultaneously with the frame, the connecting rod 35 moves to the right, which rotates the lever 34 counterclockwise. T he 30 turns the lever 28 also counterclockwise, and the stacker 3 begins to move behind the hook needle to the right side. In this case, the amount of movement of the stacker is set somewhat higher than the amount of movement of the needle-hook, which ensures that the metallized thread of the stacker is gripped by the cotton thread of the strap.

To change the size of the zigzag, the operator presses his knee 59 on the knee. The lever 58 rotates counterclockwise. The connecting rod 27 moves to the right, turns the link 25 through the lever 26, and changes the angle of inclination of the axis of the link against the fork 20. As a result, the horizontal component of the movement of the stone 24, and hence the amount of movement of the frame 18, increases.

The second shoulder of the lever 58 moves the rod 57 to the left, which causes the lever 55 to turn together with the shaft 56 clockwise. The ends of the lever 55 affect the slide blocks 54, which move the pivots of the levers 52, respectively, left to left, right to right. Behind these axes, the sliders 51 deviate in the same direction, and

consequently, the throwers 45. The amount of deviation of the thrower is equal to the deviation of the needle from its average position.

Claims (3)

1. A three-thread stitch chain stitch machine containing a crank-spider needle mechanism, looper mechanism, thread feeder mechanism, material movement and stitch width adjustment, characterized in that, in order to expand technological capabilities by providing embroidery with metallized thread, the machine is equipped with a metallized thread stacker mechanism and cam mechanisms of cotton thread pickers, kinematically connected to the needle frame, the latter being made in the form of a needle-hook. 2. The machine according to claim 1, in that it has a sensor made in the form of a point source of light located above the material and connected to the lever of the metallized thread stacker to indicate the position of the needle-hook. 3. The machine according to claims 1 and 2, characterized in that the crank-connecting rod mechanism is made up by the connecting rod. FIG. five FIG. five W FIG. YU