SU738519A3 - Thread-guide drive of circular-knitting multiloop machine - Google Patents

Abstract

A thread delivery device including a shaft having a thread storage drum supported thereon. The shaft has two belt engaging pulleys mounted thereon and disposed in engagement with two driving belts which travel at different speeds. One of the pulleys is always nonrotatably connected to the shaft and functions as a driving pulley, same being engaged with one of the driving belts. The other pulley is freely rotatably supported on the shaft by means of a bearing, and is disposed in driving engagement with the other belt. The two pulleys can be readily removed from the shaft and remounted thereon in the reverse order so that the one pulley is still nonrotatably connected to the shaft and functions as a driving pulley, but is instead disposed in driving engagement with the other driving belt. This removal and remounting of the pulleys in reverse order thus permits the speed of the drum to be easily varied.

Description

The invention relates to a knit machine industry and relates to the drive of thread-feeding devices of circular multi-system machines. Known drive thread guide devices of the circular multi-system machine, containing two belt multi-speed transmission, interacting with two coaxially. pulleys mounted on the shaft, one of which is fixed on the shaft and serves to transmit torque, and the other is mounted with the possibility of free rotation relative to the shaft, while the third is provided with a third, free rotating pulley and a third belt transmission, and the pulleys are fitted with a coupling for providing a fixed connection with the shaft of one of the freely rotating pulleys 1. This device is difficult to retool as it does not provide for the simple possibility of replacing the pulleys in places. The aim of the invention is to simplify the drive changeover. This is achieved by the fact that in a drive of the specified type between the shaft and the pulley mounted with the possibility of free rotation, a sleeve is installed, Me and the pulley support the rotation support (ball bearing), and a safety nut is installed on the shaft to fix the axle from the axial displacement and transmitting the cool pulley moment. FIG. 1 shows the layout of the thread-feeding devices on a circular machine and their relationship with the common drive; in fig. 2 is a side view of one of the thread-feeding devices with a drive pulley unit; in fig. 3 - section of a block of pulleys in one of the designs; in fig. 4 - the same, according to another design variant. The thread-feeding devices I are mounted in a limestone manner on the spool in the die machine and receive control (rotational transmission to the thread-giving drum) from an actuator having two different-speed gears 2 and 3, interacting with two pulleys 5 and 6 coaxially mounted on the shaft 4, Pulley 5 is installed with the possibility of free rotation relative to the shaft 4, for which the shaft 4 is fixed to the sleeve 7 (Fig. 3) or the sleeve 8 (Fig. 4). The sleeves 7 and 8 are connected to the pulleys 5 by a rotational support, for example, by a ball bearing 9. A safety nut 10 is installed on the shaft 4

for fixing the axial displacement of the sleeves 7 and 8 and the pulley 6.

A spacing sleeve 11 can be installed between the ball bearing 9 and the pulley 6 (FIG. 3).

And between the nut 10 and the ball bearing 9 (Fig. 4) can be installed ring 12.

Belt drives 2 and 3 receive rotation from central drive pulleys 13 and 14 having different diameters (adjustable in a known manner). The fljjH tensioners of the belts serve as rollers 15, Pulleys 5 and 6 can have pins 16, and belts - holes 17 for pins 16. Shaft 4 is connected to a thread-storage bumper 17, on which coils 18 of thread 19 are wound.

Pulley b and sleeves 7 and 8 are connected to shaft 4, for example, by means of a known key joint.

During operation, each thread-feeding device 1 receives rotation only from one belt transmission 2, while the other transmission 3 rests on the idler pulley 5. If it is necessary to change the thread-feed speed on the machine systems, unscrew the nut 10, change the tongs 5 and 6 and again tighten the nut 10,. Due to the installation of 2 pulleys 5 or b, having different diameters, under the belt transmission, the thread feed speed changes. The drive can be used for thread-feeding devices with both movable and stationary drums 17. Vtuk 8 can be made in one piece with pulley b (Fig. 4).

This design is based on the use of two different-speed belt drives.

2 and 3 allows to carry out; -: ntgp: Odacha with four different speeds only due to a change in the position of the life of 5 and b.

In addition, in various machine systems, pulleys 5 and 6 (FIG. 1) may have different diameters.

Claims (1)

Invention Formula A drive of thread-feeding devices of a round-shaped multi-system machine, containing two belt spacing gears that interact with two axes coaxially mounted on a shaft 1; 1, one of which is fixedly mounted on the shaft and serves to transmit torque rotation relative to the shaft, distinguished by the fact that, in order to simplify its changeover, between the shaft and the pulley mounted for free rotation relative to the shaft there is a sleeve between which and the corresponding rotation pulley is fixed to it, and a safety nut is installed on the shaft for fixing the axle and the torque transferring pulley against axial displacement. Sources of information taken into account in the examination : 1. Journal VJirkerei und St: rickere Technik, April, 1973, a description of the furniture fitting.