SU1758107A1 - Fabric-reeling mechanism of circular-knitting machine - Google Patents

Abstract

The essence of the invention, the mechanism includes a product roller having a device for changing its torque. The device contains mounted on the shaft of the product roller friction clutch. One power coupling is installed with the possibility of free rotation and connected with the drive of pull rollers. The second coupling half is installed with the possibility of longitudinal movement, is spring-loaded and kinematically connected with the rock sensor to change the force of its pressing to the first half coupling and changing the torque of the product roller. 2 Il.

Description

The invention relates to the knitting machine industry, in particular to the circular - mating machines.

A known mechanism for winding a blade of a circular machine, containing a product roller mounted on a shaft and a device for changing its torque, including an actuator connected to the drive of the machine’s pull rollers and kinematically, a rock sensor mounted on the swing axis by means of rigidly connected with him leverage. The disadvantage of the mechanism is the inadequacy of the winding force of the web, which adversely affects the quality of the knitted fabric. When winding the web into a roll, the force created by the spring and the ratchet mechanism changes during the winding process due to the frequency of the ratchet mechanism, the means for changing the torque. The instability of the winding force is transmitted to the web retracting mechanism and, ultimately,

adversely affects the quality of the web.

The purpose of the invention is to increase the uniformity of the winding of the web.

The goal is achieved by the fact that in a mechanism containing a product roller mounted on a shaft and a device for changing its torque, including an actuator associated with driving the pull rollers of the machine and a kinematically associated rock sensor mounted on the swing axis by means of rigidly levers connected to it, the actuator includes a friction clutch mounted on the shaft of the product roller, one of the coupling halves of which is connected to the drive of pull rollers and installed with Strongly free rotation, and the other is mounted for longitudinal movement and a helical spring, one end pressed against the second coupling half, while the kinematic linkage with rocks sensor includes a chain transmission, one of zvezdosl

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the check of which is rigidly fixed on the axis of swing of the rock sensor, and the second sprocket is mounted on the shaft of the product roller by means of a screw connection and is in contact with the second end of the helical spring.

With such a constructive solution of the mechanism, the knitted fabric is wound into a roll under the effect of the torque of the friction clutch, the value of which is adjusted automatically depending on the diameter of the web roll using a rock sensor acting through the levers and chain drive on the spring that generates the torque of the friction clutch.

Fig. 1 shows a kinematic diagram of the mechanism for winding a sheet of a circular - die machine; Fig 2 is a view A of Fig 1.

The mechanism contains a commodity roller 1 mounted on a shaft, a rock sensor comprising a rock 2 and levers 3 mounted on an axis; a chain drive consisting of a driving sprocket 4 (figure 2) rigidly fixed on the swing-axis of the rock sensor, chain 5 and driven sprocket 6. mounted on the shaft of the product roller by means of a screw connection, a chain drive consisting of the driving sprocket 7, the chain 8 and the driven sprocket 9, the coil spring 10, the friction clutch, the coupling half 11 which is associated with the draw rollers and installed with the possibility of free rotation, and the second coupling half 12 is installed with the possibility of longitudinal movement. A roll 13 of the web 14 fed by the pull rollers 15 is wound onto the product roller 1.

The mechanism works as follows

When the machine is turned on, the rotation of the pull rollers 15 by means of a chain drive 7-9 is transmitted to the coupling half 11 mounted freely on the shaft of the product roller. A second coupling half 12, mounted on the product roller on the key with the possibility of longitudinal movement, is pressed against the coupling half 11 by a helical spring 10. The torque generated by the frictional forces causes the rotation of the coupling half 12 and the product roller rigidly connected with it, onto which is wound the web 14 into the roll 13; The magnitude of the winding force of the web is determined by the torque value of the friction clutch and can be set, depending on the technological requirements, by appropriate selection of the spring stiffness s 10.

In the process of winding a web roll, its diameter increases. In order to maintain the constant winding effort, the torque must also be increased.

the friction clutch transferred to the product roller 1. This mechanism has this capability. As the diameter of the web roll increases, the rock sensor 2 rotates together with the levers 3 to

clockwise (Fig 2). Since the levers 3 are rigidly connected to the driving sprocket 4, it turns and with the help of chain 5 turns the driven sprocket 6 of the Driving sprocket 6 has a thread and is screwed

on the shaft of the product roller. As a result, when the driven sprocket 6 rotates, it moves along the axis of the product roller to the left, thereby compressing the helical spring 10, which leads to the necessary increase in the torque transmitted by the friction clutch to the product roller.

The use of the proposed mechanism design improves the quality of the knitted fabric by

achieving constant winding effort; increase the reliability of the mechanism by simplifying its design and reduce the metal intensity of the mechanism and the machine as a whole.

Claims (1)

The invention The mechanism for winding the web of a circular - die machine, contains a product roller mounted on a shaft and a fixture for changes in its torque, including an actuator associated with the drive of the take-off rollers of the machine, and a kalematically associated rock-sensor mounted on the swing axis by rigidly connected to it levers, characterized in that, in order to increase the uniformity of tension of the winding of the web, the actuator includes a friction clutch mounted on the shaft of the product roller, one of the coupling halves of which is connected to the drive of pulling rollers and is installed with the possibility of free rotation, the other is installed with the possibility of longitudinal movement, and a helical spring, one end pressed to the second coupling half, while the kinematic connection with the rock sensor includes a chain transmission, one of the stars The swarm is rigidly fixed on the swing axis of the rock sensor, and the other is mounted on the shaft of the product roller by means of a screw connection and is in contact with the second end of the helical spring. fl B / J Thebes 2.