JPH04241142A - Support for loom guide bar - Google Patents

Abstract

PURPOSE: To decrease the mass of a read support in a loom and thereby reduce the moment of inertia causing deformation of beating elements and a machine frame. CONSTITUTION: This reed support has following mechanisms; its prismatic section composed of a thin wall is divided into two elements 2 and 2' with a groove capable of accepting a reed fixing holder 3 and the both elements of the prismatic section and the reed fixing holder are assembled with a screw as a compact and dividable body.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reed beating mechanism for a loom for providing a robust connection between a reed and a reed support while maintaining favorable mass parameters of the reed support.

0002

[Prior Art] In particular, the reed beating mechanism of high-speed looms firmly connects the reed to the reed support, allows easy replacement of the reed, and ensures rigidity with high flexibility of the reed support. required to be able to do so. In the reed support of conventional looms,
These requirements are met to some extent by providing a relatively sturdy slay arm to which a heavy carrying member is fixed. This supporting member has a complicated shape in order to align and fix the reeds, fix the weft inserting jet, the diffuser (comb), the guide passage for the fixed carrier, etc. The fixing force acting on the reed produced by the screws provided along the length of the carrier member is normally transmitted evenly by another prismatic member of wedge-shaped cross section inserted into the carrier member.

[0003] The reed support of this loom consists of two interconnected elastic members, namely a reed and a reed holder, both of which are spaced apart from each other along the width of the loom. They are interconnected by a number of sturdy slay arms. Since the reed has low rigidity, it is common to reinforce it with a reed holder. If the distance between the ley arms is small and the distortion of the ley arms between them is negligible, the values of bending and torsional deformation of the reed support will depend solely on the rigidity of the reed holder. Conversely, the value of the moment of inertia will depend primarily on the mass at the farthest distance from the axis of rotation. Therefore, it is clear that the mass distribution in the cross section of this reed support is by no means ideal. In particular, the reed holder greatly contributes to the value of the moment of inertia, but hardly contributes to the rigidity against twisting and bending.

0004

The drawbacks of the prior art mentioned above are that the reed support has a large weight and, in particular, a large moment of inertia around the axis of rotation. As a result, the loom generates fairly high inertial forces during operation, distorting the beating mechanism and exerting forces on the loom frame.

[0005]

The basis of the distribution of mass in the cross section of the reed support is that as large a portion of the cross section as possible contributes to the rigidity and hardly contributes to the moment of inertia. This technical idea is best achieved by a prismatic profile formed with thin walls made of a high-strength and lightweight material, for example a composite material.

[0006] The present invention divides a prism-shaped cross section into two parts in the longitudinal direction by a groove large enough to receive a reed fixing holder, and each part of the prism-shaped cross section is attached together with the reed fixing holder by a screw. The above-mentioned disadvantages are eliminated based on the principle that it can be assembled and constructed as a compact yet divisible unit. A feature of the present invention is that first, the mass of the reed support body is reduced, thereby reducing the moment of inertia that causes distortion in the reed beating mechanism and the machine frame. In this way,
It can improve the working speed of the machine and increase the production output. Since the shape and structure are simple, labor and manufacturing costs are also low. Since the inertial force is small, not only the reed beating mechanism but also the entire loom has a longer life and reliability.

The present invention will be explained in more detail based on the preferred embodiment shown in FIG.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a cross section of a reed support for a loom. This reed support 1 has a prismatic profile with thin walls,
Its upper part is provided with a longitudinal groove. A holder 3 for fixing one end of the reed 4 is housed between the parts 2 and 2' of the reed support. A large number of screws 5 are installed at intervals along the length of the reed support.

By tightening the screw 5, the holder 3 and the prism-shaped contour part 2 are fixed to one end of the reed 4.
, 2', which closes the prismatic cross-section and increases its torsional and bending stiffness. The invention is particularly applicable to the field of weaving machines.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a reed support of the present invention.

[Explanation of symbols]

1...Reed support body 2, 2’…part 3...Holder 4...Reed 5...screw

Claims (1)

[Claims] Claim 1: A prism-shaped cross-section consisting of a thin wall is divided into two parts (2, 2') in the longitudinal direction by a groove large enough to receive the reed fixing holder (3), and the prism-shaped cross-section is divided into two parts (2, 2') in the longitudinal direction. A reed support for a loom, characterized in that each part is assembled together with a reed fixing holder (3) by screws (5) as a compact and divisible unit.