SU1689458A1 - Needle selector of knitting machine - Google Patents

Description

The invention relates to a knit machine industry, namely, devices for selecting needles of circular knitting machines in the production of patterned knitwear, and allows to increase the reliability and performance. The device contains according to the number of positions of the pushers of the axis 17, on which balanced selector plates 12 are installed with the possibility of rocking. On one of their shoulders there is an inclined embedding edge interacting with a patterned heel 4 of the pusher 3. The tail arm of the selector plate 12.2 is located between the cores 9 of electromagnets that are fixed on the pole plate 8, which is the pole of the permanent magnet 13. The axes 17 of the selector plates are in a steel frame 16 connected by two strips 15 to a strip 14, which is another the pole of a permanent magnet. Depending on the direction of the current in the coils 10, the selector plate 12 is rotated and fixed in one of the extreme positions. In the upper position of the selector plate 12, the inclined edge retracts the sub-needle pusher 3, i.e. Turns off the knitting needle 6 from work. In the lower position of the selector plate 12, the patterned heel 4 of the needle-like pusher 3 passes by the inclined edge (higher or lower), i.e. knitting needle 6 is involved in the process of looping. 1 Il.

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The invention relates to a knit machine industry, namely, devices for the selection of needles of knitting machines in the development of patterned knitwear.

The aim of the invention is to increase reliability while improving the speed of the device.

The drawing shows a device for the selection of needles.

In the device, in the grooves 1 of the needle cylinder 2, there are sub needle pushers 3 with patterned heels 4. Sub needle pusher 3 rests with its lower end on wedge 5, and with upper end in contact with a knitting needle 6 located in groove 1.

In the housing of the device mounted on the collar of the machine 7, a pole plate 8 is fixed, in which cores 9 with coils 10 are fixed, forming a control electromagnet in contact with pole pieces 11 with tail portions of the selector plates 12. The permanent magnet 13 contacts one side with the pole plate 8, and the other with a strap 14, connected by slats 15 with a frame 16, in which there are axes ^ of selector plates.

The selector plates 12.1, with their working part with an inclined heating edge, interact with the patterned heels of 4 pushers 3 under the influence of a pulsed current in the coils of 10 control electromagnets.

The device works as follows.

When a current pulse is applied to both coils 10, one of the cores is re-magnetized and additional magnetization of the other electromagnet core occurs, which causes repulsion and attraction forces between the cores 9 and the tail part of the selector plate 12.2 between them. In this case, depending on the direction of the current in the coils 10, the selector plate rotates about the axis 17 and is fixed in one of the end positions due to the field of the permanent magnet 13 (for example, in the upper position of the working part of the selector plate 12.1).

The needle gaiter 3 and the knitting needle 6, being in the groove of the needle cylinder 2 and shifting relatively stationary, mounted on the collar 7 of the needle picker, have the opportunity to meet with their patterned heel 4 embedding the inclined edge of the working part of the selector plate 12.1. When this occurs, the pushing of the pusher 3 into the groove 1 of the needle cylinder 2 occurs. The recessed pusher 3 jumps off the wedge 5 and, continuing its movement relative to the device, does not climb along the wedge 5 and, therefore, does not feed the knitting needle 6 into the knitting zone, i.e. this needle is not involved in the looping.

In the subsequent movement, coming to the next needle pick-up device, the sub-needle pusher 3, under the influence of the machine’s wedge system, occupies the initial position shown in the drawing.

Depending on the program of operation of the device, the selector plate may take the position of the working part of the selector, in which the patterned heel 4 passes the hemming edge of the selector plate 12.1 and the needle-like pusher 3 rises along the wedge 5, feeding the knitting needle 6 to the knitting zone. This needle is involved in the looping.

The proposed device in comparison with the known device has a higher speed and reliability due to the closure of the circuit of a permanent magnet.

Claims (1)

Claim The device for the selection of needles. knitting machine, containing the number of positions of the pushers axis, installed one above the other, on which two shoulders selector plates are mounted, which have an inclined sink edge installed on the working part, installed with the possibility of interaction with the patterned heels of the needle pushers, as well as control electromagnets installed with the possibility of interaction with the tail part of the selector plates, and a permanent magnet, characterized in that, in order to increase the reliability in operation while With an increase in speed, it has a body made of a material with high magnetic permeability, which is a magnetic circuit in which there is a permanent magnet made in the form of a flat plate that contacts one plane with the wall of the body and the other with a pole plate in which the cores of the control electromagnets are fixed the opposite wall of the housing is made in the form of a frame in which the axes of the selector plates are fixed, the tail parts of which are located between the pole tips with Relevant control electromagnets.