RU190338U1 - THE DEVICE OF MANAGEMENT OF THE MOVEMENTS OF THREADS OF THE ELECTRON JACQUARD MACHINE - Google Patents

Abstract

The invention relates to the textile industry and can be used in devices intended for the formation of pharynx on weaving machines. The technical problem to which the utility model is directed, is to increase the resource and reliability of the device, to simplify the production process, reduce the cost and simplify its design. This technical result is achieved due to the fact that it is possible to use wear-resistant polymeric materials as the material of the rotary holding hook, and also because the rolling bearing is used in the turning unit of the holding hook. The design of the device provides the ability to produce most of its parts, including retaining hooks, using the most affordable and affordable production technology - additive printing technology using the layer-by-layer fusion method of a thermoplastic polymer. As the rest of the parts used in the design, typical, mass-produced elements are used.

Description

The invention relates to the textile industry and can be used in devices intended for the formation of pharynx on weaving machines.

It is known that in devices for controlling the movement of threads of jacquard machines, it is possible to use mechanisms consisting of a body, a roller block, cords, moving hooks, electromagnets, springs, as well as retaining hooks. The retaining hooks in such devices serve to fix the movable hooks and at the same time are the movable part of the magnetic circuit (anchor) of the electromagnet.

A device is known [Patent US 4739806 A. Device for loom / Joseph Palau [FR], Dario Bassi [FR] - 04/26/1988], in which the fixation of movable hooks occurs with the help of elastic elements made in the form of thin steel strips. One end of such a strip is rigidly fixed in the housing, and the other is bent in the shape of a hook. Fixation of the movable hook occurs due to the fact that the electromagnet, by drawing, bends the steel elastic element, thereby forcing it to contact the movable hook that has reached the top point. The disadvantage of this device is that the steel elastic elements must be made of spring steel, which does not provide high electromagnetic permeability. In addition, the elastic elements are subjected to constant bending loads when controlling the movement of the threads, which leads to breakdowns and low reliability of the mechanism.

A device is known [Patent WO 2017206277. Solenoid valve module of a high-speed jacquard machine / CUI, Rukui [CN] - 12.07.2017]. This device contains a mechanism consisting of a H-shaped core, a coil with a winding placed around the core, two steel pivot retaining hooks, and two springs acting on these hooks. The core, the coil with the winding and the steel holding hooks is an electromagnet, as a movable part of the magnetic circuit, which are steel pivot holding hooks. These hooks have holes with bushings installed in them to ensure rotation on the pivot axes installed in the housing. The disadvantage of this device is that with such a shape and such an arrangement of the magnetic circuit of the electromagnet, it is necessary that the rotary retaining hooks, which are the movable part of the magnetic circuit, were made of a material with high electromagnetic permeability, in particular, of electrical steel. In the node of rotation of the rotary hook is used sleeve, that is, the bearing. The use of sliding bearings, as compared with the use of a rolling bearing, leads to an increase in the energy expended on friction and increases wear, which is also a disadvantage.

The device described in the invention was taken as a prototype [Patent US 4702286 A. Shed loops including pivotable retaining hooks / Joseph Palau [FR], Dario Bassi [FR] - 10.27.1987]. Device for the formation of the throat on the loom consists of a set of systems for lifting the warp, each of which is located between two dividing walls.

Each system contains two movable hooks connected to each other by the ends of the cord. The cord bends around the roller of the lifting unit, which also has another roller, which bends around the second cord. One end of which is secured. Each of the hooks alternately moves back and forth with the help of knives. Thus, each hook is alternately brought to the top level, where it can be fixed by a holding swivel hook. Each system contains two retaining pivot hooks. Hooks have the ability to rotate on the axles that are installed between the two dividing walls of each system. Each holding pivot hook comprises a central protrusion provided with a hole through which the axis passes. He also has a tail, oriented upwards, and the other part, facing down, with a curved end. Between the tail part of each pivotal retaining hook and the stop there are springs, the force of which makes it necessary to adopt such a position of the pivotal retaining hook in which its contact with the movable hook is possible. At the head of the electromagnet is located, including the core, which is made in the shape of the letter N. The branches of the electromagnet core are in contact with the central protrusions of the rotary retaining hooks.

Movable hooks under the influence of knives alternately reach the upper part and act with their protrusions on the lower part of the retaining pivoting hooks, thereby overcoming the spring force and leading the upper part of the retaining pivoting hook to the upper branch of the electromagnet core. When voltage is applied to the electromagnet, the holding rotary hook is fixed in a position in which the rotary and movable hook do not interact. In this case, the movable hook can continue to move downwards from the top point.

Similarly, as already mentioned, the disadvantage is that to ensure the efficiency of the electromagnet, the swivel hooks must be made of a material with high electromagnetic permeability. The knot of rotation of the holding hook does not imply the use of a rolling bearing, which leads to an increase in the energy spent on friction and increases wear, which is also a disadvantage.

The technical problem to be solved by the utility model is to increase the resource and reliability of the device.

This technical result is achieved due to the fact that it is possible to use wear-resistant polymeric materials as the material of the rotary holding hook, as well as due to the rolling bearing used in the turning unit of the holding hook. This leads to a decrease in the energy spent on friction when turning the hook and reducing wear, ensures smoothness and ease of operation of the mechanism.

The technical problem to which the utility model is aimed is to simplify the production process of the device, reduce the cost and simplify its design.

This technical result is achieved by the fact that the design of the device provides the ability to produce most of its parts, including retaining hooks, using the most affordable and inexpensive of production technologies - additive printing technology by the method of layer-by-layer fusion of thermoplastic polymers. As the rest of the parts used in the design, typical, mass-produced elements are used.

The inventive device is presented in figures 1 and 2. FIG. 1 shows a group of inventive devices and knives for moving movable hooks. FIG. 2 shows the device divided into parts.

The device comprises a housing which consists of upper (position 1 in Fig. 1) and lower (position 2 in Fig. 1) details. Shells are grouped together as shown in FIG. 1, with each upper housing part having one separation wall (pos. 3 in FIG. 1). For the formation of the guide groove, the wall of the next body is used as the second dividing wall, and a separate wall is used for the outer body (pos. 4 in Fig. 1). Moving hooks (pos. 5 and pos. 6 in Fig. 2) are installed in the guide slot. The upper cord is attached to the movable hooks with their ends (pos. 7 in Fig. 2). The upper cord goes around the upper roller of the roller block (pos. 8 in Fig. 2). The roller block also has a lower roller (pos. 9 in Fig. 2) and jumpers connecting both rollers (pos. 10 and 11 in Fig. 2), combined with screws (pos. 12 and 13 in Fig. 2). Rollers are pressed into rolling bearings (pos. 14 and 15 in Fig. 2). The roller unit is placed inside the bottom part of the case in such a way that the rollers are located between the side walls of the case part, and the jumpers are placed in the guide grooves located in these walls. The lower cord (pos. 16 in Fig. 2) bends around the lower roller, one end of which is attached to the body, and the other passes freely through the hole in the body.

Electromagnets (pos. 17 and 18 in fig. 2) are mounted on the mounting plate (pos. 19 in fig. 2) with screws (pos. 20 and 21 in fig. 2). Mounting plate is installed in the groove in the upper part of the body (pos. 22 in Fig. 2). The housing has pads with holes (pos. 23 and 24 in Fig. 2). Screws are screwed into these holes (pos. 25 and 26 in Fig. 2). These screws serve as axes of rotation for rolling in retaining hooks (pos. 27 and 28 in fig. 2) rolling bearings (pos. 29 and 30 in fig. 2). In the case and in each rotary retaining hook there are sockets for spring installation (pos. 31 and 32 in fig. 2). In the upper part of the rotary retaining hook, in places that, when in contact, are opposite to electromagnets, steel plates are mounted (pos. 33 and 34 in Fig. 2). The plate has a threaded tail for attachment to the swiveling retaining hooks using nuts (pos. 35 and 36 in Fig. 2).

The device works as follows: the movable hooks reciprocate the movement of the knives (pos. 37 and 38 in Fig. 1) alternately move upward along the guide slot until the moment of contact with the swiveling retaining hook. A movable hook having a profile with two rounded protrusions, acting on the rotatable holding hook, causes it to turn, overcoming the force of the spring action, so that the steel plate attached to the hook is pressed to the electromagnet. When power is applied to the electromagnet, the steel plate, being an anchor of the electromagnet, holds the hook in this position. In this position, the retaining hook does not impede the free movement of the movable hook downward, following the knife moving downwards. If it is necessary to fix the movable hook, the supply voltage is not supplied to the electromagnet, the holding hook returns to its original position with a spring, preventing the movable hook from moving downwards, following the knife.

Thus, the movable hooks, if they are not fixed with the holding hook, alternately rise and fall. The roller unit is located at the bottom. If first fixation of one of the movable hooks occurs, the roller unit starts moving upwards, rising by the upper cord, with an unlocked movable hook. The lower cord, one end of which is secured in the case, when lifting the roller block, moves the thread upwards with the other free end. In case both movable hooks are fixed in the upper position, the roller unit remains at the top point until the moment when one of the knives, having reached the top point of its movement, does not affect the corresponding movable hook. Moving the hook, moving up, its impact will rotate the retaining hook. Turning the retaining hook will lead the steel plate attached to it to the electromagnet. Turning on the electromagnet will hold the steel plate pressed to the electromagnet, as a result, the retaining hook will be fixed in this position and the movable hook will move downwards, following the knife moving downwards. Moving the rolling hook down will occur due to the fact that it is connected by a top cord with a roller block. The roller unit, in turn, moves down under the influence of the downward force of the elastic element or the force of gravity of the load (not shown in the drawings) acting on the free end of the lower cord.

The use of separate steel plates as an armature of an electromagnet allows the use of pivot retaining hooks made of a material that does not have electromagnetic permeability. Thus, the pivot retaining hooks can be made of polymeric materials with high resistance to wear. In addition, in the knot of rotation of the holding hook, it is possible to use a rolling bearing, the presence of which no longer affects the electromagnetic permeability of the armature of the electromagnet.

Claims (2)

1. The control unit of the movement of the threads of the electronic jacquard machine, comprising a housing, electromagnets, a mounting bar, pivot retaining hooks, movable hooks, a roller block, springs and cords, characterized in that the device contains rolling bearings placed in pivot retaining hooks and steel plates , attached to a swivel retaining hook, used as an anchor of an electromagnet. 2. The device according to p. 1, characterized in that it contains a pivot retaining hooks of a polymeric material.

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