JPH07857B2 - Shuttleless Loom Weft Gripper Pair - Google Patents

Abstract

In a pair of weft carrying grippers for shuttleless weaving looms, each gripper is formed of a composite structure consisting of two metal shells, stiffly connected with a central body of synthetic plastic material, wherein said metal shells are partially incorporated.

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a shuttle grip loom weft gripper, that is, a pair of grippers that inserts a weft into one end of a loom and conveys it through a warp shed to an opposite end thereof. Is.

(Prior Art) Conventionally, the gripper has been made of a metal or a synthetic plastic material, but when made of a storage material, the weight becomes excessive and the cost becomes considerably high. In this case, the rigidity becomes small.
Designers and manufacturers have always sought to address both of these types of grippers separately to reduce the disadvantages. Both types of grippers have been gradually improved with respect to the outer shape of the gripper itself, but in the case of metal grippers, the improvement was to reduce the weight and to simplify the structure and its manufacturing method, in the case of plastic grippers. There was an effort to make the structure rigid.

Despite these improvements, however, metal grippers and plastic material grippers are still not satisfactory, especially when used on looms with modern, extremely high speed operations.

(Object of the Invention) It is an object of the present invention to provide a gripper for transporting a weft yarn through a shed in an original manner so as to eliminate the above-mentioned drawbacks while retaining the advantages of the above-described two kinds of grippers known in the related art. .

To achieve the above object, the gripper pair of the present invention comprises a composite structure in which each gripper is composed of a central body of synthetic material and two metal shells firmly bonded thereto, Both metal shells are characterized in that they have hooks, protrusions or recesses, etc., which ensure the connection with the central body of plastic material.

Preferably, the composite structure of grippers is formed by injection molding a synthetic plastic material between the metal shells.

(Explanation of Examples) Hereinafter, the present invention will be described in detail based on illustrated examples.

FIG. 1 shows a transport gripper P, which comprises a lower metal shell 1, a central body 4 of synthetic plastic material, and an upper metal gripper 5,
The lower metal shell 1 has a V-shaped cross section, the side surfaces of which are joined to form a single element 2 in the front part, and the rear part is divided into two ears 3, and the upper metal shell 5 is for the main body 4. It has the shape of a warp guard, having a front hook end 6 and a rear fork end 7.

According to the invention, the transport gripper P comprises three components,
That is, it has a structure in which the central body 4, the lower metal shell 1 and the upper metal shell 5 are firmly bonded to each other. This structure can be made by injection molding a synthetic plastic material between the metal shells 1 and 5. Mutual coupling between the components by providing the ends of the metal shells 1 and 5 with suitable hooks, forks and the like, and by providing these metal shells with other coupling elements such as recesses 8 or protrusions. Can be most effective.
The metal shells 1 and 5 are substantially merged into the central body 4, so that once these components are assembled, the gripper structure is a very compact integral unit.

FIG. 2 shows a tension gripper T, and this tension gripper T can also obtain the same construction result as the above-mentioned transport gripper. It comprises a lower metal shell 9 of substantially the same shape as the metal shell 1 of the carrying gripper P, a central body 10 of synthetic plastic material and an upper shell 11 which comprises a frame part 12 and an extension terminating in an ear 14. Alternatively, the tail portion 13 is included.

Although the embodiments of the present invention have been described above, it goes without saying that other modifications can be included in the scope of the present invention.

[Brief description of drawings]

1 is an exploded perspective view of a carrying gripper of the gripper pair of the present invention; FIG. 2 is an exploded perspective view of a tension gripper of the gripper pair of the present invention. 1, 5 ... Metal shell, 2 ... Single element 3 ... Ear, 4 ... Central body 6 ... Front hook end, 7 ... Rear fork end 10 ... Central body, 11 ... Upper shell 12 …… frame part, 13 …… extension part or tail part

Claims (2)

[Claims] 1. A shuttle yarn loom weft gripper pair, each gripper comprising a composite body comprising a central body of synthetic material and two metal shells rigidly bonded thereto, said both metal shells comprising a plastic material. A pair of weft grippers characterized by having hooks, protrusions or recesses for ensuring a secure connection with the central body. 2. A pair of weft grippers according to claim 1, wherein the composite structure of the grippers is formed by injection molding a synthetic plastic material between the metal shells. .