JPS6330423B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a heald traction mechanism between a drive lever of a shedding machine and an extremely long heald associated with a wide loom, in which case the heald traction rod has a small heald traction mechanism. Both are provided with two, in particular three or more, oscillating double-acting levers which are mounted at different positions on the heald traction rod and which are connected to the heald frame. and furthermore, the heald traction rod comprises a single rod at the point of articulation of the double-acting lever.

1 to 3 show three known and practically applied configurations of this type of heald traction mechanism. Reference numeral 1 designates a loom having a heddle 10, and reference numeral 2 designates a shedding machine, each of which has heald traction rods 5, 50, and 51 pivotally attached to a swing lever 3 thereof. In this case, since the loom is a large loom with a width of several meters, for example 3 to 15 meters, the heald traction rod has three or more double-acting levers 4 that can swing.
It acts on the frame of the heald 10 via the acting member 40 and the acting member 40 . The double-acting lever sits on a swingably fixed bolt 6.

In the variant of the arrangement according to FIG. 1, only one rod 5 is provided, with a length of more than 3 meters and whose cross section is controlled by the small pitch of the heald. Transporting and assembling this long rod is difficult, and requires great care. For this reason, other configurations other than this configuration must be sought. It has also been proposed to use a single rod 50, 51 for power transmission from one double-acting lever 4 to the next double-acting lever.

A simple configuration is also shown in FIG. In this arrangement, two articulation positions 7, 70 for adjacent rods of one arm of the double-acting lever are provided one above the other, one above the other. Majority of connection positions 7,70
causes losses due to excessive friction. The bearing plays of multiple bearings combine to create an unsteady machine.

FIG. 3 shows a conventional configuration in which the end of the arm of the double-acting lever 4 is widened and has two successive articulation points 7.

In such a configuration, each of the double-acting levers 4 imparts a different movement to the next double-acting lever 4 via the rod 51, and this movement is transmitted to the heald frame 10 via the actuating member 40. . This heald frame 10 is therefore subjected to unacceptable bending stresses. The cause of the deterioration of the kinematic geometry of the double-acting lever 4 to the other double-acting lever is the different angular position of the healds of the connections 9, 90 with respect to the longitudinal axis of the heald traction rod 51; This is a line passing from the shaft 6 to the link 7 of the common rod 51 in two adjacent double-acting levers 4.

The object of the invention is to create a mechanism that is easy to assemble and that does not present any problems in terms of transportation, works without distortions or large overall frictions in the bearings.

This is achieved in a heald traction mechanism of the type described at the outset as follows. That is,
The individual rods are connected to each other via an intermediate member,
In this case, each intermediate member is provided with a bearing for an arm of a swingable double-acting lever, and each is rigidly but partially releasably connected to both adjacent single rods. This is achieved in particular by the fact that the link pin and the coupling mechanism lie on the longitudinal axis of the entire rod.

The invention will be explained in more detail below with reference to embodiments illustrated in the accompanying drawings.

The heald 10 of the loom 1 is actuated by the shedding machine 2 by means of a swinging lever 3, a heald traction mechanism 5, a swingable double-acting lever 4 pivotally connected thereto, and an operating part 40.

The heald traction mechanism 5 consists of an individual rod 55 and a connecting member 75, which in each case consists of two plates 77, 78 arranged parallel to each other. These plates are fixedly provided at the ends of the member 55. The connection can be rigid at weld points 78 or removable by screw connections 87.

Each of the connecting members 75 is part of a link connection with a double-acting lever 4. This link connection consists of a countersunk screw 81 and a countersunk nut 82, which are connected to the molded hole edges 8, 8 of the two plates 76, 77.
0. Screws that work as bolts 8
A holding part 83 is present inside the plates 76, 77 concentrically with respect to the holding part 83, and a hole edge part 8, 8
0 is pressed by a screw-nut connection. A bearing eye 42 of the double-acting lever 4 is supported on this ring via a bearing sleeve 41.

To carry out the assembly, use the long heald towing rod 5
is divided into individual rods 55 and connecting members 75, transported, and assembled one by one directly at the site where the loom is installed. This is because the connection between the intermediate member and at least one of the rods can be disassembled, so that the intermediate member can be disassembled but can be connected to the double-acting lever 4 without play.

In order to ensure that the assembled rod 5 is not subjected to bending stresses during the weaving operation due to possible incorrect positioning of the vertical arm of the lever 4, a threaded connection 87 is provided.
and the ends of the individual rods 55 is a constrained rotationally elastic but rigid mechanism in the axial direction of the rods, such as a push fit, such as a rubber ring.

[Brief explanation of the drawing]

1 to 3 are a known heald traction mechanism, and FIG. 4 is a schematic diagram of a heald traction mechanism according to the present invention.
FIG. 5 is an enlarged plan view of the pivot position between the swingable double-acting lever and the heald traction rod, and FIG. 6 is a longitudinal sectional view of the pivot position and the connecting element according to FIG. In the figure, code 4...double-acting lever, 55...rod,
75... Intermediate member, 81, 82, 83... Bearing.

Claims (1)

[Scope of Claims] 1. A heald traction mechanism between a drive lever of a shedding machine and an extremely long heald associated with a wide loom, in which case at least two special heald traction rods are provided on the heald traction rod. Three or more swingable double-acting levers are provided, which double-acting levers are mounted at different positions on the heald traction rod and connect it to the heald frame, and which are also double-acting. In the heald traction mechanism, in which the heald traction rod consists of a single rod between the pivot points of the lever, each rod 55
are connected to one another via an intermediate part 75, each of which has a bearing 81, 82, 83 for the arm of the swingable double-acting lever 4, and in each case two adjacent A heald traction mechanism, characterized in that it is rigidly but partially removably connected to a matching individual rod 55. 2 Two plates 7 with intermediate members 75 arranged in parallel
6, 77, and the ends of the rods 55 are each fixed between the ends of these plates. 3. The bearing for the double-acting lever 4 is comprised of screw joints 81 and 82 that can be rigidly connected to the intermediate member 75, and serves as a bearing rest for the bearing eye 42 of the double-acting lever. The heald traction mechanism according to claim 1 or 2. 4. The plates 76, 77 have countersunk holes 8, 80 into which the head of a screw 81 on the one hand and the nut 82 seated on the screw on the other hand are inserted, in which case there is a gap between the plates. and a ring 83 formed as a bearing bolt for the bearing eye 42 of the double-acting lever 4 is tightened concentrically around the countersunk hole. Heald traction mechanism according to paragraph 3. 5 Intermediate member 7 between adjacent rods 55
5 as a rigid joint, for example a welding point 78, and the other joint with the other rod as a disassembly clamping bearing, for example a screw clamping joint 8.
7. Heald traction mechanism according to one of the claims 1 to 4, characterized in that it is configured as 7. 6. According to any one of claims 1 to 5, characterized in that the entire bearing 81 of the intermediate member 75 and the removable clamping bearing 87 are in a straight line. Heald towing mechanism as described.