CZ288114B6 - Weaving machine heald lath with heald carrier holder - Google Patents

Abstract

The invented weaving machine heald lath (1) with a heald (6) carrier (5) holder (4) comprises a hollow profiled beam. The heald (6) carrier (5) holder (4) gripping part (40) is situated at a certain distance from the heald lath (1) walls (12) in the heald lath (1) cavity (10), whereby a gap extending between the heald lath (1) walls (12) and the heald (6) carrier (5) holder (4) gripping part (40) is filled up with elastic material.

Description

Effect of a weaving loom with a heald carrier

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a bar of a weaving loom with a heddle support holder comprising a hollow profile beam.

BACKGROUND OF THE INVENTION

There are known dumbbells of a weaving loom of a weaving machine formed by a hollow profile beam, which form the lower and upper side of the leaf frame of the weaving loom. The two dumbbells of the weaving sheet are connected at their ends by the shoulder, which form the sides of the leaf frame. The lower or upper dumbbell is coupled through the eye or meshes formed thereon through the shed mechanism for shedding during weaving. Each of the dumbbells is provided on its outside with a shaped protrusion, on which a plurality of sliders are generally displaceably mounted along the length of the bar. The heald carrier is fixed on the sliders along the length of the bar. The healds are provided at their ends with hooks which are mounted in a known manner in a vertical position on the heald carrier of the lower and upper bar. Between their ends, the healds are provided with thread loops through which warp threads pass.

Due to the elasticity of the warp yarns and the dynamic forces acting on the weaving sheet during the weaving process, the dumbbells are deformed. In order to avoid excessive loading and consequent failure of the healds due to these deformations, the clearance between the heald hooks and the heald carriers must be greater than the amount of dumbbell deformation. However, both the sense and magnitude of the acceleration as well as the sense and magnitude of the load, both of the weaving frame and of the healds, are constantly changing when the weaving blade is reciprocated. The healds are thus continuously alternately hung on the heald carrier of either the upper or the lower bar of the weaving blade, and the abovementioned clearances between the healds of the healds and their carrier are constantly defined by impact. These shock effects then generate stress and acoustic waves in the leaf frame, which cause both the destruction of the leaf frame and a source of noise that endangers the health of the operator of the weaving machine. These impact effects of the healds are transmitted to the environment by the hollow profile beam of the bar, and resonance events also occur.

The only way to suppress the noise of the bar frame of the weaving loom with hollow profile beams provided with sliders carrying the heald carrier is by filling the barbell cavity described above with foam polyurethane. However, this solution does not make it possible to reduce the play between the healds of the healds and their carrier, and thus to reduce the aforementioned shocks during operation of the weaving machine. This solution only results in the suppression of some of the vibrations and resonance effects of the hollow profile barbell. However, the noise level remains too high and exceeds hygiene standards.

It is an object of the present invention to provide a bar of a weaving loom of a weaving machine which would reduce the noise of a weaving loom of a weaving machine during operation of a weaving machine.

SUMMARY OF THE INVENTION

The object of the invention is achieved by means of a dumbbell of a weaving machine with a heddle carrier holder, which is characterized in that the heddle carrier holder is situated in the dumbbell cavity with its distance from the barbell walls. filled with elastic material.

This bearing of the heddle support holder reduces the impact effect of the movement of the heald eyes on the heddle support during weaving by converting their impact energy to the elastic energy of the elastic

Shock absorbers. At the same time, this bearing of the heddle support holder reduces the noise level of the weaving sheet during weaving.

It is preferred that the barbell carrier clamping portion passes into the support portion of the heald carrier holder 5, which extends through the openings in the barbell wall from the barbell cavity to the outside of the barbell.

This design of the barbell with the heald carrier is simple, highly functional and reliable.

Preferably, the clamping portion of the heddle support bracket is formed by a flat belt and the support portion of the heddle support bracket is formed consecutively along the length of the clamping portion by situated flat brackets.

The heald carrier holder thus arranged is simple and functional to manufacture.

The elastic material is preferably vulcolan or vulcanized rubber.

Both materials meet the requirements for manufactureability, durability and rigidity of the heald carrier holder mounting in the barbell cavity.

Overview of the drawings

The invention is schematically illustrated in the drawing, wherein FIG. 1 shows a front view of a weaving frame of the weaving sheet, FIG. 2 a cross section through a dumbbell of a weaving sheet with a heald carrier and a heddle one end thereof;

DETAILED DESCRIPTION OF THE INVENTION

The effect of the weaving blade of the weaving machine with the heald carrier holder is part of the shed forming device 30 on the weaving machine. The weaving sheet comprises a pair of parallel dumbbells 1, which at their ends are connected perpendicularly to the dumbbells 1 situated by the shoulder 2. The dumbbells 1 and the shoulder 2 together form a leaf frame of the weaving blade, see fig. coupling the weaving sheet to a known shed mechanism of the weaving machine.

The bar 1 is formed by a hollow beam. In the bar 10 cavity 10, the clamping part 40 of the heald carrier 5 is situated with its clamping part 40. The clamping part 40 of the heald carrier 6 is connected to the supporting part 41 of the heald carrier 5. from the bar 10 cavity 1 to the side of the bar 1 situated on the inner side of the weaving leaf frame. The support part 41 of the holder 4 of the heald carrier 6 is adapted in some known manner to accommodate the heald carrier 5, for example for riveting it. The individual healds 6 are supported on the carrier 5 in a known manner by their hook 60 and are provided with a loop 61 for the warp thread.

The clamping portion 40 of the heald carrier 5 is located in the bar 10 cavity 10 without contact with the bar 12 walls 12, the gap between the bar 12 walls 12 and the clamping portion 40 of the heald carrier 5 is filled with an elastic material, e.g. or rubber followed by vulcanization. The elastic material thus forms an elastic shock absorber acting on the heald carrier 5 during weaving, thereby dampening the deformation and vibration of the weave leaf frame and reducing the noise of the weave.

In the illustrated embodiment, the holder 4 of the heald carrier 5 is formed by a flat strip with brackets along its length, wherein the flat belt forms the clamping portion 40 of the holder 4 of the heald carrier 6 and the brackets form the support part 41 of the holder 4 of the heald carrier 5. The barb cavities 10 extend through openings 11 in the barbell wall 12 on the inner side of the weaving frame.

In the not illustrated example embodiment, the holder 4 of the heald carrier 5 is formed by another suitable one

The support 4 of the heald carrier 5 may be formed, for example, by several flat parts arranged in the dumbbell cavity 10 side by side along the length of the dumbbell 1, each of which is provided with a bracket or may consist of a body or an array of bodies of another suitable shape.

Claims (5)

PATENT CLAIMS A loom of a weaving loom with a heddle support holder comprising a hollow profile beam, characterized in that the holder (4) of the heddle support (5) is a clamping portion (40) spaced from the walls (12) of the bar (1). ) located in the cavity (10) of the bar (1), the gap between the walls (12) of the bar (1) and the clamping portion (40) of the holder (4) of the heald carrier (5) being filled with elastic material. Dumbbell according to claim 1, characterized in that the clamping portion (40) of the holder (4) of the heddle support (5) passes into a support part (41) of the holder (4) of the heddle support (5) which the openings (11) in the wall (12) of the bar (1) extend from the bar cavity (10) to the outside of the bar (1). Dumbbell according to claim 2, characterized in that the clamping portion (40) of the holders (4) of the heald support (5) is formed by a flat belt and the support part (41) of the holder (4) of the heald support (5) ) is formed consecutively along the length of the clamping part (40) by situated flat brackets. Dumbbell according to any one of claims 1 to 3, characterized in that the elastic material is vulcolan. Dumbbell according to any one of claims 1 to 3, characterized in that the elastic material is a vulcanized rubber.