FI77696B - VIRKVERKTYG FOER FRAMSTAELLNING AV BAND PAO EN HAEKELGALONMASKIN. - Google Patents

Description

ι 77696

Crochet tool for making ribbons with a crochet machine

The invention relates to a crochet tool for damping strips on a crochet hook machine, which tool comprises a series of crochet hooks fixed to the machine, fixed crochet needles arranged to reciprocate relative to the crochet rail, and a device for introducing elastic yarns.

According to the invention, it has been found that the set of perforated needles used in crochet hook machines can be replaced by a handrail through which the elastic threads are passed. The characteristic features of the invention are defined in more detail in the appended claims. The solution according to the invention prevents the lateral bending of thin perforated needles. The cumbersome threading of the elastic threads into the eyes of the perforated needles is still eliminated. Finally, the S-shaped twisting of the elastic wires in the eyes and the resulting friction are avoided. This friction is known to lead to roughening of the flexible wires 20 and thus to a reduction in the working strength.

Known perforated needles used for inserting flexible yarns are moved back and forth vertically in accordance with the prior art together with weft yarn setters (weft yarn guides). However, this reciprocating motion is necessary only for weft yarn setters, but not for flexible yarn guide members. According to claim 2, the handrails can be placed at the same constant height as the over-30 throw rail, so that they perform only a lateral reciprocating movement according to claim 1. This reduces the friction of the flexible wires.

More importantly, since the elastic threads are not endless, they must be tied. Known perforated needles move relatively quickly up and 2,77696 down, while flexible yarns are fed substantially more slowly. If the handrails also move vertically back and forth, then each knot should, until crocheted in, move 20-30 times up and 5 down inside the handrail and, above all, over its top and bottom. The nodes can then unravel, leading to machine downtime and reduced production. In addition, the friction rising from the jump-like would increase the tension of the jump-like flexible wire into the handrail by the node, leading to an uneven loop pattern.

According to claim 3, a plurality of handrails are arranged in a row on the guide rail and can be adjustable in the longitudinal direction of the guide rail and with respect to the crochet hooks, so that the grooves of the handrail can be adjusted correctly compared to the crochet hooks attached to the fastening device.

Embodiments of the invention as well as other features thereof will be explained in the following in connection with the drawing.

Fig. 1 is a schematic representation of crochet means arranged according to the invention of a crocheting machine, partly in a side view, Fig. 2 shows a side view of several side-by-side handrails and Fig. 3 shows an end view of the handrails, and control of elastic yarns and elastic band.

As shown in Fig. 1, the following crochet tools can be seen: perforated needle groups 2 for introducing warp yarns 4? a front tubular weft yarn guide 14 for introducing a front weft yarn 30 and a rear tubular weft yarn guide 15 for introducing a rear weft yarn 18.

According to the details of the present invention, groups or individual crochet hooks of crochet hooks 10 are attached to the attachment device 12 and 12 '35 in accordance with the invention. If desired, the flexible wires 8 are passed through the railings 6.

Il 3,77696

In the manufacture of a plurality of flexible strips, which are produced side by side at several work stations, groups of flexible yarns 8 are introduced through the railings 6 at the workstations. Front and rear weft yarn guides 14 and resp.

5 15 in the drawing, when moving from front to back in each case, move one weft yarn transversely over a group of elastic yarns 8. Groups of hole needles 2 always place one group of warp yarns 4 alternately from the right and left at the ends of the crochet needles 10. 10 Together with the reciprocating movement of the crochet hooks, with the help of the overcast rail 20, a group of loops is formed side by side, enclosing the elastic yarns and connecting them to the weft yarns. The ready-flexible strips 22, 24 is pulled down between 15 and 20 yliheittokiskon response to the running direction of the arrow 26.

Figures 2 and 3 show in detail an arrangement for introducing flexible yarns. Each rail 6 has a plate-like portion 70 having a triangular spherical thickening 72 of approximately 20 cross-section at the bottom edge of the figure. The division of the slits is the same as the division of the attached crochet hooks. In the case of ten division, ten 25 slits are milled for each centimeter. Both the gaps and the bridges 78 between them then have a width of about 0.5 mm.

A plurality of handrails 70 are arranged side by side. Each has as many slits as the strip should receive the flexible yarns 8. The handrails are adjustable relative to each other and are adapted to the attached crochet hooks.

The flexible yarns 8 are introduced into feed rollers 80 and 82 with a speed ratio of approximately 1: 3, so that the flexible yarns are not tightened. The wires then run around the turntable 84 and through the slots 74. At work 4 77696, flexible strips 87 are formed, which are then pulled out by the traction rollers 88. The speeds of the feed rollers 82 and the drive rollers 88 are approximately 3: 3 relative to each other. The elastic threads 8 and the elastic strips 87 5 thus receive additional tension, so that the elastic threads remain at the bottom 75 of the slots 74.

The handrails 6 are arranged on the guide rail of the crocheting machine from a laterally adjustable position and are moved laterally back and forth by means of the guide rail, always knit by a large amount. The elastic wires are only slightly deflected and the handrails do not move in the longitudinal direction of the elastic wires, so that the friction is considerably reduced. The knots in the fed flexible yarns only need to pass once through each railing from top 15 down. The wire guides 14 and 15 (Fig. 1) are moved in a known manner in the longitudinal direction of the handrails both upwards and downwards.

Claims (6)

A wood tool for making strips on a wood-gallon machine, said wood tool comprising a cut-off rail (20) connected to the machine 5, a series of fastened wood rails arranged with respect to the cut-off rail close to and fro, and a device for feeding of elastic trees, characterized in that: (a) the device has at least one cam part (cam 10 6) with relatively parallel slots (74) for the elastic trees; b) the partition of the slits on the core is the same as the partition of the squeezed lumber (10); c) an actuator for the cam has been designed to provide it with the lateral offset of the wood-working machine, alternately eating left and right a distance corresponding to a split. Woodworking tool according to claim 1, characterized in that the core (6) is arranged at a constant height in relation to the cut-out rail (20). Woodworking tool according to claim 1 or 2, characterized in that several chambers (6) are arranged in a row on the cut-out rail and that they can be adjusted in the longitudinal direction of the cut-off rail relative to the clamped cutters (10). Woodworking tool according to any one of claims 1-3, characterized in that the core (6) is formed as a substantially disc-shaped part (70) which has on its one longitudinal edge a bead-thickening, that the slots 30 (74) are arranged in the thickening and that they run across in relation to this. 5. A cutting tool according to claim 4, characterized in that the bead-thickened thickening (72) has a substantially triangular cross-section in such a way that the thickness of the thickening increases against the longitudinal edge of the slab-shaped part (70). Il