SU58958A1 - Adaptation to shoe stitching machines with double-stitched snowball seam to form a thread inlet - Google Patents

Description

In existing shoe machines of the piercing type with a double-thread stitch seam, the process of intercepting (putting on) the spout of the lower thread shuttle, pulled out by the needle, is allowed for a double way: enters the loop formed by the needle. Both methods have their drawbacks, namely: the first method is coupled with the thread sliding along the working body, which weakens the thread and leads to its breakage, the second method is more acceptable, but its disadvantage is that at high speed of the machine the spout breaks the thread or does not enter the loop at all.

In order to secure a nozzle in the loop, it is proposed to create a thread inlet, i.e. the expansion of the loop at the needle at the moment of its interception by the nose of the shuttle.

Adaptation to shoe piercing machines with double-thread stitch seam to form a thread inlet, using the hook-needle closure, has been proposed in two forms, in which the spring-loaded contactor is limitedly movable relative to its holder movably attached to the machine head.

In FIG. 1, 3, and 5 depict the front view. In different positions of the adaptation to shoe piercing machines with double thread seam to form a loop inlet; FIG. 2, 4, and 6, from the side; FIG. 7, 9, and 11 are front views in another form; FIG. 8, 10 and 12 are side views.

The tide 1 of the machine head (figs. 1 - 6), which serves as a guide for the needle bar 2, is attached movably on the axis 4 to the holder 3. In the holder there is a guide groove with three sections, which includes a roller 7 freely rotating on the axis 6. The latter is rigidly connected to the needle bar 2 by means of the plate 5. The holder 3 includes a spring-loaded locking rod 8, at the lower end of which a plate 9 is attached, which serves to close the needle eye. The upper end of the rod

the contactor is provided with a plate 10 abutting against the anvil 11, which is rigidly connected to the i-glove 2. In addition, in the holder rod 8, a pin 12 is pressed into the small straight slot of the holder. The rod 8 of the contactor is pressed constantly down by the action of the spring 13.

During the operation of the device, at the initial moment of lowering the needle bar 2 from the upper end position (Figs. 1 and 2), while the roller 7 moves along the straight part (a) (Fig. 4) of the notch of the holder 3, the latter remains at rest (Fig. 2). At the same time, the rod 8 closes, under the action of the spring 13 following the needle, moves downward and with its lower plate 9 closes the needle eye, resulting in the inlet of the thread 15 (Fig. 3 and 4).

The downward movement of the rod 8 is stopped when the pin 12 reaches the end of the small groove (Fig. 4). Upon further movement of the needle bar 2, the roller 7 moves along the second section (b) of the groove, which causes the holder 3 to rotate, and with it the rod 8 of the closer, allowing the free needle of the needle bar 2. When the roller 7 moves along the third section (c) of the groove the holder 3 remains at rest (Fig. 6).

When the needle bar 2 moves upwards when the roller 7 passes through the second section (b) of the groove, the holder 3 rotates towards the needle and at the end of this section the eye of the needle 14 is finally closed by the plate 9 (Fig. 4).

When the roller 7 moves in the first section, the holder 3 remains at rest, and the terminal 8 of the closing device follows together with the needle bar 2 under the action of the pin 11 (Fig. 2).

In the embodiment of the device shown in FIG. 7-12, in the tide 1 of the machine head, which serves as the guide needle bar 2, the holder 3 of the looper 6 moves back and forth. The holder has two straight grooves - a bolt groove, which includes a finger 8, which is rigidly connected to the needle bar 2, and a small The slot (slot) on the side (Fig. 8), which includes a pin 12, formed by the upper curved end of the looper 6. The looper 6 enters the longitudinal slot of the needle bar 2 and closes the stop plate screwed onto the needle bar 9. The latter also serves lifting petlazamkatel 6 when driving and glovoditel up. The lower end of the looper 6 is permanently aligned with the needle, and the upper end is pressed down by the spring T.

In the cylindrical part of the holder 3 there is a groove, where the tip 4 of the spring 5 enters. This eliminates the arbitrary movement of the holder 3 when it stops in the lower position.

During the operation of the device at the initial moment of lowering the needle bar 2 from the upper end position, while the finger 8 is freely moving along the slot of the holder 3, the latter remains at rest. At the same time, the Petrolinker 6 under the action of the spring 7 follows the needle 10 and moves downward, maintaining the closed state of the needle's eye, as a result of which the loop expands, i.e. a filament is formed (Fig. 9 and 10) to set the nozzle of the shuttle.

The downward movement of the looper 6 stops at the moment when its bent upper end — pin 12 reaches the end of the small groove of the holder 3, the needle, moving further down, moves away from the closer and the eye remains open until the end of the movement is down.

The downward movement of the looper 6 is resumed at the moment when the finger 8 of the needle bar 2 reaches the end of the large slot of the holder 3, which also begins to move with the needle bar. At the beginning of the movement of the needle bar 2 upward, the holder 3, together with the looper 6, remains at rest. At that moment, when the upper edge of the plate 9 meets with the pin 12 of the looper 6, the latter begins to move with the needle, moving along the small groove of the holder 3. This movement of the looper relative to the holder 3 continues as long as the finger 8 moves through the big slot of the holder . As soon as the finger 8 reaches the upper end of the large groove of the holder 3, the latter also begins to move upwards along with the needle bar 2 and the button strap 6. This movement continues to the highest needle position. The process then repeats.

The subject matter of the invention.

Claims (2)

I. Adaptation to shoe stitching machines with double-thread stitch seam to form a thread inlet using a needle hook closure, characterized in that the spring-loaded contactor 9, 8 (Fig. 1, 2) or 6 (Fig. 7, 8) is made relatively movable relative to its holder 3, movably attached to the head of the map. 2. The form of the device according to claim 1, characterized in that for limiting the movement of the contactor when the needle hook moves downwards, the holder 3 is provided with a slot for P1TIF 12 of the contactor mating with the stop 11 (Fig. 2) or 9 (Fig. 8) on the needle bar to provide the same speed of movement of the hook — ngly and close. Зцг1 G l t Fig4 Gufipo Fis7 Figsh Fig5