RU2031998C1 - Device for moving needle-case of knitting machine - Google Patents

Abstract

FIELD: warp-knitting and knitting-and-sewing machines. SUBSTANCE: device encloses at least two cams mounted on the main shaft of the machine so as to contact rollers made of fingers and sleeves. The device also accommodates a carriage positioned in guides for moving along the main shaft. The carriage supports pushers bearing the fingers of the rollers one side and the needle-case at the other. The sleeves of the rollers can move along the fingers. EFFECT: higher operative durability. 3 dwg

Description

 The invention relates to knitted machinery and can be used in knitting-stitching and warp knitting machines.

 Known devices designed to transmit movement from the main shaft to the actuators, including the needle bar of the knitting machine by means of flat articulated link mechanisms.

 In such mechanisms, the crank mounted on the main shaft of the machine, rotating, transmits movement through a system of levers and hinges to the driven link, on which the actuator - the needle bar, is fixed. Knitting needles in this case move in planes perpendicular to the axis of the main shaft of the machine. At least two such devices are installed on the knitting machine.

 Such mechanisms are widespread in knitting machines. However, to obtain complex weaves, their technological capabilities are limited, since the complexity of the design of such mechanisms leads to a decrease in the reliability of the machine in operation.

 The closest in technical essence to the proposed device is a device for moving the needle bar, including a fist mounted on the main shaft of the machine. A roller made in the form of a finger and a sleeve contacts a fist. The roller finger is mounted on the pusher so that its axis is parallel to the axis of the main shaft, and the sleeve has the possibility of free rotation around the finger. A needle bar is installed on the pusher, to which it transmits movement from the fist. At least two such devices are installed on the knitting machine.

 In such a device, the fist mounted on the main shaft, rotating, transmits through the roller the movement of the pusher, which moves the needle bar attached to it. The movement of the needle bar is carried out in accordance with the law of motion, according to which the profile of the fist is made.

 The disadvantage of this device is the limitations of its patterned capabilities, due to the fact that the knitting needles can only move in planes perpendicular to the axis of the main shaft of the knitting machine.

 The purpose of the invention is the expansion of the patterned capabilities of the device due to the longitudinal movement of the needle bar (parallel to the axis of the main shaft).

This is achieved by the fact that in a device comprising at least two cams mounted on the main shaft of the knitting machine, rollers in contact with the fists and each made in the form of a finger and a sleeve having free rotation around the finger, pushers on which the fingers are fixed rollers so that the axes of the fingers are parallel to the main shaft, the needle bar mounted on the pushers, while the pushers are installed in the carriage, with the possibility of longitudinal movement along the axis of the main shaft of the knitting machine, and one Of the guides is the main shaft, and the sleeve of the roller is made to move along the finger of the roller, and the working length of the finger of the roller is determined by the ratio:
l = R + S,
where R is the width of the roller sleeve;
S is the maximum value of the longitudinal movement of the needle bar.

Thus, distinctive in comparison with the prototype of the essential features are:
A carriage mounted in rails with the possibility of longitudinal movement.

 Installation of pushers in the carriage.

 The installation of the roller sleeve with the possibility of movement along the finger, and the magnitude of this movement is determined by the magnitude of the longitudinal movement of the needle bar.

 The presence of these distinctive features in relation to the prototype indicates the compliance of the claimed object with the eligibility criterion of "novelty."

 A search by the applicants for a source of information showed that the features distinguishing the proposed device from the prototype device were not found in other technical solutions, which characterizes them as significant.

 In FIG. 1 shows a structural diagram of a device for moving a needle bar; in FIG. 2 - embodiment of the connection of the roller with the pusher; in FIG. 3 is a view along arrow A in FIG. 2 (connection of a roller with a pusher).

 A device for the longitudinal movement of the needle bar includes a main shaft 1 (Fig. 1) mounted in bearings 2 for rotation. Fists 3 are fixed on the main shaft 1. Rollers 4 in contact with the pushers 5 are in contact with the fists 3. The roller 4 consists of a pin 6 (FIGS. 2 and 3) and a sleeve 7 that can rotate freely on the pin 6 around axis 8 (FIG. 1 and 2). At the end of the pusher 5, a fork 9 (Fig. 2 and 3) is made, in which a pin 6 of the roller 4 is fixed using terminal clamps 10 and screws 11 (Fig. 3). The pushers 5 are mounted in the carriage 12 (Fig. 1) with the possibility of movement in planes perpendicular to the axis of the main shaft 1. The carriage is equipped with guides of reciprocating motion 13 and 14. The guides 13 are interfaced with the fixed guides 15 mounted on the skeleton of the knitting machine. The guide mating with the guide carriage 14 is the main shaft 1. A needle bar 16 is mounted on the pushers 5. The system is closed using a spring 17.

 The device operates as follows.

 The main shaft 1 with the fists 3 fixed on it receives rotation in the bearings 2 from the main drive of the machine (not shown). The fists 3 drive the pushers 5 through the rollers 4. The pushers 5 move in a plane perpendicular to the axis of the main shaft 1. The needle bar 16 mounted on the pushers 5 moves in accordance with the profile of the fist.

 If, in accordance with the requirements of pattern formation, longitudinal (parallel to the axis of the main shaft) movement of the needle bar is necessary, then such movement from the corresponding mechanism (not shown) is transmitted to the carriage 12 (in the direction of the arrow, see Fig. 1) and is carried out through the guides 13 and 14 of the carriage using guides 15 and the main shaft 1 (acting here as a guide).

 During the longitudinal movement of the carriage, the pushers 5 installed in it are also moved. In this case, the fingers 6, fixed in the forks 9 of the pushers 5, move along their axis (in the direction of the arrow, see Fig. 2) by an amount determined by a given weave.

 The technical advantage of the proposed device compared to the prototype device is to expand the patterned capabilities due to the longitudinal movement of the needle bar of the knitting machine.

Claims (2)

1. DEVICE FOR MOVING THE NEEDLE OF A KNITTING MACHINE, including at least two fists mounted on the main shaft of the machine, rollers in contact with the fists, each of which is made in the form of a finger and a sleeve, pushers on which the fingers of the rollers are fixed and on the other side - the needle bed of the machine, characterized in that, in order to expand the drawing capabilities, the device further comprises a carriage mounted in the rails with the ability to move along the main shaft, the pushers are mounted on the carriage, while sleeve rollers are movable along the fingers, and the last working width amounts to
l = R + S,
where l is the working width of the finger;
R is the width of the sleeve;
S is the value of the maximum longitudinal movement of the needle bar.  2. The device according to claim 1, characterized in that the main shaft of the machine is used as one of the guides.

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