CZ182092A3 - Process of a spindleless spinning machine mass spinning, and apparatus for making the same - Google Patents

Abstract

A method of mass spinning of an open-end spinning machine, provided with a two-speed electric motor (7) for driving the spinning unit (3), in which after spinning of the two-speed electric motor (7) all spinning units (3) are simultaneously flushed at the same time, whereupon it is increased to the working value for their speed. The apparatus for performing the above method comprises a timing device (14) inserted into the switching circuit of the two-speed electric motor (7) and coupled to the mass-engaging device (10).

Description

Method of mass spinning of open-end spinning machine and apparatus for carrying out this method

Area, techniques

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mass spinning process of an open-end spinning machine provided with a two-speed electric motor for driving a spinning unit and to an apparatus for carrying out the method.

and

BACKGROUND OF THE INVENTION

To start the open-end spinning machine, the spinning unit is started first, then the motors for driving the combing rollers are started, and after a certain time, the reversing and winding roll reversing mechanism is started. As a result of the backward movement of the take-up and take-up rollers, the yarn is first returned to the spinning chambers for mass spinning and after changing the direction of rotation of the take-up and take-up rollers the spun yarn is withdrawn from the spinning chamber and wound on a reel.

It is also a prerequisite for proper spinning in the spinning chamber that the supply of fiber material is resumed before the end of the yarn returns to the spinning chamber, in which sufficient fiber material must be provided in advance to start the spinning process. be excess, as this leads to an excessively thickening of the yarn at the point where the newly introduced fibers are attached to it.

In the known embodiments, an asynchronous two-turn pole-changing electric motor, which is controlled by three start and stop buttons, is used to drive the spinning chambers, the feed rollers, the take-up and take-up rollers.

The known methods of mass spinning of an open-end spinning machine, i.e. starting, driving and stopping the machine, as well as devices for carrying out these methods, operate with a certain operational reliability. As the production of open-end spinning machines increases, their technical parameters also increase substantially, and as a result, the demands on the accuracy of triggering the reversing movement of the take-up and winding rollers increase, resulting in reliability and quality of bulk spinning.

SUMMARY OF THE INVENTION

The above-mentioned disadvantages of the prior art are overcome by the mass spinning process of the open-end spinning machine.

equipped with a twin-speed unit according to the invention, switching the electric motor to the electric motor for spinning drive, which consists in that after full speed, after the predetermined time interval all spinning units are spun, whereupon their speed is increased to working value.

The essence of the device for carrying out the method according to the invention is that a timing device is interposed in the switching circuit of the two-speed electric motor, which is coupled to the switching element of the bulk piecing device.

Advantages of the method according to the invention are an increase in the operating speed of the spinning units, an increase in the draw-off speed and an expansion of the spun yarn stock while maintaining or possibly the reliability of the bulk spinning.

Overview of the drawings

An exemplary embodiment of an apparatus for carrying out the method according to the invention is shown schematically in the accompanying drawing, including a block diagram of the control of a two-speed electric motor driving a spinning unit.

DETAILED DESCRIPTION OF THE INVENTION

The open-end spinning machine comprises a plurality of juxtaposed spinning stations, which are constituted by a sliver 1, from which the sliver 2 is fed in a known manner to a spinning unit 2 in which it is processed into a yarn 4 / withdrawn by a draw-off device. 2, the yarn 4 is guided to a winding device comprising a winding roller 5 where the yarn 4 is wound onto a spool 4.

The open-end spinning machine is further provided with a two-speed electric motor Z serving to drive the spinning unit 1 and the winding roll 5, wherein a known gearbox 2 is inserted between the two-speed electric motor Z and the driven members. At the same time, a bulk piecing device 10 is coupled to the gearbox 2, which is provided with switching elements and in a known manner coupled with an electromagnetic brake (not shown) and a fiber feed coupling, not shown with an electromagnetic brake (not shown).

The control circuit of the two-speed electric motor Z shown in the illustrated embodiment consists of a first push-button control 11 for starting half-speed of the two-speed electric motor Z and a second push-button control 12 for starting the two-speed electric motor Z to full speed. at the same time, the unit 12 is coupled to a timing device 14, to the output of which a switching element 15 is coupled, which is coupled to the bulk piecing device 10.

In a mass spinning operation, the operator first presses the first pushbutton actuator 11, which connects the electric circuit for bringing the two-speed electric motor Z to half speed.

Upon reaching the half-speed of the two-speed electric motor 7, the operator presses the second push-button control 12 which controls the switching unit 12. The switching unit 13 engages a known (not shown) electric circuit to bring the two-speed electric motor Z to full speed. The switching time of the switching element 15 is actuated by the mass spinning device 10 which is driven from the gearbox e.

of

In a known manner, the bulk piecing device 10 controls the electromagnetic brake and the fiber coupling 2 and the electromagnetic brake and the yarn draw-and-take-up coupling 4 by means of its switching elements (not shown).

During the bulk piecing process, the speed of the two-speed electric motor Z increases, along with the speed of the spinning units. After the mass spinning process is completed, the revolutions of the two-speed electric motor and the spinning unit rise to the specified working value.

Claims (2)

PATENT CLAIMS Method of mass spinning of an open-end spinning machine, equipped with a two-speed electric motor for driving spinning units, characterized in that after switching of the two-speed electric motor (7) to full speed, all spinning units (3) are spun simultaneously after predetermined time their speed increases to working value. Device for carrying out the method according to claim 1, characterized in that a timing device (14), which is coupled to the bulk piecing device (10), is inserted into the switching circuit of the two-speed electric motor (7).