DD202464A5 - HOLERGREIFER FOR DEEP-FREE WEAVING MACHINES - Google Patents

Abstract

It is a high weaving speed while ensuring the quality of the fabric can be achieved by a Holer gripper is created, which takes the weft yarn safely when taking the Bringer gripper in the middle of the box and holds. The fixed element of the holer gripper has a hook end which is arranged in a vertical plane and opens downwardly, wherein a movable shuttle cooperates with the hook end to hold the weft thread. To protect the warp threads extends from the fixed element to the side of the hook, a vertical nose.

Description

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Field of application of the invention

This invention relates to a pickerless looper gripper, the grippers of which have a fixed element with a hooked end and a movable shuttle whose end cooperates with the hook to keep the weft picking plague.

Characteristic of the known technical solutions The transition of the weft thread from the Bringer gripper to the Holer gripper in the middle of the shuttles is extremely delicate and difficult in all shuttleless looms, because of the insufficient exact mutual positioning of said gripper at the moment in which the thread change he follows. This is especially true in view of the increasing high web speeds that are currently in use. On the one hand, the various management systems that have been tested and accepted so far

no decisive results, on the other hand, form a considerable mass in the center of the field and cause considerable obstacles in the work of the weaving machine.

Object of the invention

The aim of the invention is to ensure a high Webgeschindigkeit considering the fabric quality.

Explanation of the essence of the invention

The object of the invention is to provide a Holer gripper, which safely takes over and holds the weft in the acquisition of the Bringer gripper in the middle of the subject.

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AP D 03 D / 239 878 Berlin, 11. 11.

The present invention provides a holer gripper, which, by its elaborate design - derived also from careful considerations as to the mechanism of the change of thread in the middle of the field - brings a highly satisfactory solution to the problem under investigation.

This gripper comprises a fixed element with a hook end and a movable pendulum element at the end, which cooperates with said hook to hold the thread · The gripper is characterized in that the hook is arranged at the end of the fixed element on a vertical surface and downwards Opens ·

Advantageously, a hare is arranged on the stationary element which extends to the side of the hook and protects the warp yarn.

embodiment

The invention will now be described in detail by way of example ". The accompanying drawing shows in FIG

Fig. 1: an overall view of the gripper according to the invention;

Fig. 2: a detailed side view of the hook end .. and the gripper of Fig. 1;

Fig. 3: a side view of the entire gripper end.

With reference to the drawings it can be seen that the holer gripper according to the invention comprises a fixed element 1 with a hook end 2, a movable pendulum element 3 oscillating over part 4 on the

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AP D 03 D / 239 878 Berlin, 11. 11. 82

mounted fixed member 1 and intended to cooperate in a known manner with the inner part of the hook end 2 to hold the weft ·

According to the invention, the hook 5 of the gripper shown is arranged in a vertical surface and opens downwards, d. H * to the sliding surface of the gripper and the belts that control its movements, as the pictures of the gripper - especially Fig. 2 - clearly show.

This arrangement of the hook 5 is combined in the gripper according to the invention with a special kastring to protect the weft, which consists of a hare 6, which protrudes from the fixed element 1, which carries the hook 5, and attached to the side of the latter is.

The downwardly open hook arrangement provided by the present invention results from the fact that most obstacles in the moment of yarn change between the Bringer gripper and the Holer gripper by the rotational movement of the Bringer gripper about its longitudinal axis, the to be determined by the Weberkamm. These movements cause a lifting of the part of the weft which is to be grasped by the holer gripper. Exactly under such conditions, the conventional, upwardly open grippers lying below the weft thread are unable to grasp the mentioned thread, since, when it is raised, it tends to slip out of the hook 5.

In contrast, the gripper with the downwardly open hook assembly according to the present invention is always reliable and reliable because the weft is gripped when the hook 5 is above him; wherein the lifting of the thread does not determine its slipping.

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AP D 03 D / 239 878 5 Berlin, 11. 11. 82

In addition, the vertical hare 6 forms a very effective obstacle to protect the warp thread against any penetration of the warp thread into the hook 5 and at the same time reduces the overall length of the looper ·

It is understood that other than the embodiments described and illustrated herein are possible without departing from the present invention.

Claims (2)

3 9878 5 " ⁵ " ^6O86223 AP D 03 D / 239 878 5 Berlin, 11.11, 82 invention claim Holer gripper for shuttleless looms of the type having a fixed element with a hook end and a movable shuttle whose end cooperates with said hook to hold the weft, characterized in that the hook end (2) of the fixed element ( 1) is arranged in a vertical plane and opens downwards, 2. Holer gripper according to item 1, characterized in that a vertical hare (6) is provided which extends from the fixed element (1) to the side of the hook (5) to slit the warp yarn · For this 1 page drawings