RU46502U1 - ROUND KNITTING MACHINE - Google Patents

Abstract

The utility model relates to the field of knitting engineering, namely to the designs of circular knitting machines for the manufacture of knitted cords.

The essence of the utility model is that a thread guide is installed above the needle bar, driven by a stepper motor through a belt drive.

Description

The utility model relates to the field of knitting engineering, namely to small diameter circular knitting machines for the manufacture of cords.

Known small diameter circular knitting machine (Utility Model Patent No. 32499, MKI D 04 V 9/44 (15/78), 2003) containing a fixed cylinder, in the grooves of which are reed needles receiving reciprocating motion from individual electromagnetic drives installed on each needle. The filament is fed into the knitting zone by a yarn guide driven by an electric motor mounted above the needle bar.

The disadvantage of the filament feed device is that it greatly complicates the design of the knitting machine and contains many labor-intensive elements in the manufacture. This design requires high accuracy in compliance with the alignment of the needle cylinder of the knitting machine and the motor shaft.

The objective of the utility model is to simplify the design of the yarn feeder and ensure consistency of individual needle selection with yarn feed into the knitting zone.

The problem is solved in that a thread guide is located above the needle bar for laying the thread, mounted on a sleeve that is driven by a belt drive from a stepper motor.

Figure 1 schematically shows a circular knitting machine of small diameter with an electromagnetic drive loop-forming organs.

The machine (figure 1) for the manufacture of a knitted cord contains a stationary cylinder 1, mounted on a frame 2, in the grooves of which

reed needles 3 are installed, receiving reciprocating movement from the pusher 4, spring-loaded with a spring 5 and connected to the core 6 of the electromagnet 7. The electromagnets are mounted on a support 8. A plate 9 is mounted on the needle bar, on which a sleeve 10 with a thread guide 11 is placed, feeding the thread 12 from bobbins 13 through a system of thread guides 14 to needles 3. The yarn guide 11 is driven by a stepper motor 15 via a belt 16. Viscoelastic stops 18, 19 are installed in the housing 17.

The machine operates as follows.

When applying an electric signal to the electromagnet 7, the core 6 is pulled up, pushing the pusher 4 connected to the needle 3. At the same time, the signal is supplied to the stepper motor 15 and the thread 12 is laid on the needle 3. To lower the needle 3, the current to the electromagnet 7 ceases to be supplied and works spring 5, core 6 returns to its initial position, lowering the needle 3. To turn off the needle 3 from work, no current is supplied to the coil of the electromagnet 7 and the needle does not knit. Knitting of the cord occurs by sequentially turning on the electromagnets 7, which is consistent with the angle of rotation of the stepper motor 15. The time of switching on of the i-th electromagnet and the time interval between switching on of the i-th and i + 1-th electromagnets are set by the knitting program

To increase the reliability of the process of loop formation and damping of possible oscillations of the needle 3, the knitting mechanism is equipped with viscoelastic elements 18, 19.

Claims (1)

A circular knitting machine containing a stationary needle cylinder with reed needles, a device for laying a thread, characterized in that a thread guide for laying a thread is mounted above the needle bar, mounted on a sleeve that is driven by a belt drive from a stepper motor.