SU150790A1 - Forming weaving machine for making cloth without compacted hem - Google Patents

Description

Known edge;) sovatel to weaving machines for making cloth without a compacted edge, including a needle, sprinkled with a thread at the hem threads of the warp and mounted on the needle bar, retracted to a non-working bed with a machine.

The disadvantage of this edge former is that its needle comes out of the loop formed by the weft thread, when the reed is still far from the line of the surf and the fabric is not finished. it does not exclude the gathering of the needle from the needle, which causes tightening of the edge, worsening the quality of the latter.

These drawbacks are eliminated by the needle holder in the form of a shaped, unbalanced lever, pivotally mounted on an i-spring-loaded corner arm that holds the fork and mounted on a handle equipped with stops for limiting the needle holder. With this design, the edge former weft thread before the surf falls between the needle and the fork in the lock and cannot be tied off, and the needle comes out of the loop formed by the weft thread at the edge threads of the base just before the surf, which eliminates the possibility of edge overlap.

FIG. I depicts a edge former; in fig. 2 - the same. in terms of; in fig. 3 - the position of the needle and fork in the minimum speed; pas figs. 4 - the position of the needle and fork when the batana and the NPP are moving away in the throat of the weft thread (dotted line).

On the axis 1 of the holder 2, a spring-loaded angular lever 3 sits freely, and the spring 4 tends to rotate it toward the lowering 5 of the fabric 6. On the lever 3, the needle holder 8 with the needle 9 is pivotally mounted on the axis 7. The needle holder is designed as a shaped unbalanced lever, which tends to be tilted : under the ownership of 150790- 2 -

lift the needle .9 upwards. In addition, on the corner lever 3, a fork 10 is mounted on the finger 10, the branches of which pass through the holes in the plate 12, and the lever 3 carries an adjustable bolt / at its lower end, which interacts with the beam 14 of the battana in the instrument. To limit the stroke of the angular lever 3 and the needle holder 8, the holder 2 is provided with stops 15 and 16.

The edge formers are mounted on a weaving machine on both sides of the produced fabric 6 next to its edges 17.

The operation of the edge former is as follows. In the position of the surf (in Fig. 1 it is shown in thin lines) bar 14 of the batana, the action of the thrust bolt 13 retracts the angular lever 3 together with the fork // and the needle holder 8 with the needle 9 connected to it to the rear position so that the latter do not entered the teeth Byrd J8 (Fig. 3).

After weaving the weft yarn J9 to the edge 5 of fabric 6, the batan moves back. Behind it, under the action of the spring 4, the angular lever 3 moves with the needle holder 8. The end of the needle 9 passes high above the weft thread 19. The needle holder 8 reaches the stop 15, tilts, and the needle I covers the top of the laid weft thread / 5 (Fig. 4) , gets into the fork 7 /, which, together with the lever 3, also came forward. In this way, the weft thread 19 appears between the needle 9 and the fork / 7 in the lock and its assembly from the needle 9 is impossible.

When the baton is in the rear position, a battle occurs. In this case, the weft thread 19 (Fig. 4, the dashed line) is laid in the zeyee 20, the needle 9 overflows. The loop 2J of the weft thread formed with it slides along the needle 9 and is pulled to the hem 17.

Upon further movement of the batan to the position of the surf, his beam 14, interacting with the bolt 13, moves lever 3 away from the edge of the cloth 5; at the same time, the unbalanced needle holder 8 rotates under its own weight, lift the needle 9, which gradually comes out and :; weft loop 21 and finally leaves it just before the surf. After the needle .9 leaves the loop 21, the needle holder 8 overturns and depress the needle 9 to the upper position. Together with the lever 3, the fork 11 also departs.

Then the cycle of operation is repeated.

Slave:) This edge former on the other side of the fabric is the same.

Subject invention

The edge maker to weaving machines for making cloth without a compacted edge, including a needle, is overlapped with a weft thread at the hem of the warp and mounted on the needle holder, which is retracted to the non-working position with a machine button, characterized in that. in order to improve the quality of the edge, the needle holder is made in the form of a profiled unbalanced lever, pivotally mounted on a spring-loaded corner lever, nonsundem fork and mounted on a holder equipped with stops to limit the needle needle path.

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