JPH045771B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a chimpully shaft braking device for a spinning machine.

Prior Art In spinning machines such as spinning frames and roving frames, the rotation of a drive motor installed at the outer end is transmitted to one end of a chimpuri shaft via a drive belt, and the rotation of the chimpuri shaft is rotated and the rotation is rotated in the axial direction of the chimpuri shaft. The chimp pulleys fixed in an evenly spaced manner are rotated, and the rotation of the chimp pulleys rotates the winding spindle via the spindle tape.

The chimp pulley shaft is connected to bottom rollers such as a back bottom roller, a middle bottom roller, and a front bottom roller through a gear train at a gear end, and drives these bottom rollers.

In recent years, in order to increase the production efficiency of spinning machines, the number of spindles in spinning machines has been increased by several times the conventional number. At the same time, the length of chimpouri shafts has become longer.

This results in significant twisting of the chimpulley shaft during operation. Due to such twisting,
There is a concern that inter-spindle spots may occur in the quality of yarn produced using multi-spindle spinning machines.

More specifically, when starting the machine, the chimp pulley shaft sequentially starts rotating from the outer end side by the drive motor installed at the outer end, and the rotation is transmitted to the gear end while causing twisting.

Therefore, the chimp pulley shaft starts with a phase shift corresponding to the amount of torsion between the outer end side and the gear end side, and the rotation of the spindle also shifts by that amount.

On the other hand, rotation is transmitted from the gear end of the chimpuri shaft to the gear end side of the bottom roller via the gear train, and then sequentially to the outer end side, so when it comes to the bottom roller that sends out the yarn,
Conversely, the outer end side will be delayed in phase than the gear end side.

As a result of the above, at startup, a larger twist acts on the yarn spun on the outer end side than on the yarn spun on the gear end side, causing unevenness between spindles to occur in the spun yarn.

Note that during steady operation, the chimpully shaft rotates with a certain amount of twist in its length direction, which occurs at the time of startup. When the machine is stopped, the torsion that the chimpully shaft had during steady operation is released, and then the machine stops. Therefore, at the next startup, the chimp pulley shaft will start while being twisted from the outer end side to the gear end side in the same way as described above.

Purpose of the Invention The present invention focuses on the fact that in a long chimpully shaft, twisting and untwisting are repeated alternately when starting and stopping, and this causes unevenness between spindles in yarn quality. To provide a spinning machine capable of producing yarn of excellent yarn quality without unevenness between spindles by cutting off repetitions of twist release.

Structure of the Invention The present invention is a chimp pulley shaft braking device for a spinning machine, in which braking means are provided in the vicinity of both ends of a chimp pulley shaft extending in the longitudinal direction of the machine frame. The above object is achieved by braking both ends of the pulley shaft to leave twist in the pulley shaft and starting the pulley shaft substantially without twisting the next time the pulley shaft is started.

The main purpose of the brake means installed apart from the drive motor is to prevent the torsion of the chimpully shaft from being released, and therefore its braking capacity is limited to stopping the rotation of the chimpully shaft. may be smaller than the braking capacity of the other braking means.

DESCRIPTION OF EMBODIMENTS Hereinafter, the present invention will be described in detail based on drawings illustrating embodiments of the present invention.

The drawing is a front view of the drive system of a spinning machine embodying the present invention.

In the drawing, a spindle frame 1 has a large number of spindles 4 (only four are shown in the drawing) inside thereof, and in the center thereof, a gear end (right side in the drawing) runs from the outer end (right side in the drawing) to the gear end (right side in the drawing). It rotatably supports a chimpully shaft 2 extending to the left side of the shaft.

A large number of chimp pulleys 3 (only one is shown in the drawing) are fixed to the chimp pulley shaft 2 at predetermined intervals. A spindle tape 5 is stretched between each chimp pulley 3 and four spindles 4, and as the chimp pulley shaft 2 rotates, the spindle 4 is rotated via the spindle tape 5. Note that 6 is a tension pulley for adjusting the tension of the spindle tape 5.

The vicinity of the right end (end on the outer end side) of the chimp pulley shaft 2 is supported by a bearing 7 fixed to the spindle frame 1. Furthermore, bearing 7
An electromagnetic brake 8 is installed on the spindle frame 1 in the vicinity of the spindle frame 1 to brake the outer end side end of the chimp pulley shaft 2.

Inside the outside frame 9 located at the right end of the spindle frame 1 are brackets 10 and 1.
A pair of self-aligning bearings 12 and 13 are fixedly installed through the bearing 1, and a drive shaft 14 is rotatably supported between the bearings 12 and 13.

Further, the left end of the drive shaft 14 and the right end of the chimp pulley shaft 2 are connected by a coupling 15. A drive pulley 16 is removably fixed to the drive shaft 14 between the bearings 12 and 13 by a key 17, a keyway 18, and a set screw 19. A drive belt 20 is connected between the drive pulley 16 and the drive motor (not shown).
drive belt 2 from the drive motor.
0, drive pulley 16, drive shaft 14
and drives the chimpulley shaft 2 via the coupling ring 15.

The vicinity of the left end (end on the gear end side) of the chimp pulley shaft 2 is rotatably supported by a bearing 27 fixed to the spindle frame 1. Furthermore, the spindle frame 1 located near the bearing 27
An electromagnetic brake 28 is installed at the shaft 2 to brake the end of the chimpully shaft 2 on the gear end side. The left end of the chimp pulley shaft 2 is supported by a bearing 31 fixed to a gear end frame 29, and is further operatively connected to the left end of a bottom roller (not shown) via a gear train 30.

The electromagnetic brakes 8 and 28 are braking means installed near both ends of the chimpully shaft extending in the longitudinal direction of the spinning machine of the present invention, and may have a known structure.
Further, the braking capacity of both electromagnetic brakes 8 and 28 may be the same, but the electromagnetic brake 28 installed away from the drive pulley 16 that receives the rotational force from the drive motor may be smaller than the electromagnetic brake 8.

In the device of the present invention configured as described above, at the first startup, the chimp pulley shaft 2 starts rotating sequentially from the outer end side (right side in the drawing) by the drive motor installed at the outer end, causing twisting. The rotation is transmitted to the gear end (left side of the drawing). Therefore, the chimp pulley shaft starts with the outer end side and the gear end side out of phase by the amount of torsion.

In this state, the machine is stopped, and both ends of the chimp pulley shaft 2 are braked by the electromagnetic brakes 8 and 28, so that the torsion remains in the chimp pulley shaft 2. Therefore, when the machine is started next time, the chimpully shaft 2 has already been twisted, so it can be started without further twisting. As a result of the above,
At startup, there is no substantial difference in twist between the yarn spun on the outer end side and the yarn spun on the gear end, and a good yarn without spindle unevenness is obtained.

Effects of the Invention According to the present invention, even in the case of a long chimpully shaft, it is possible to cut off the alternating repetition of twisting and untwisting when starting and stopping, and to produce yarn with excellent yarn quality without unevenness between spindles. It is possible.

[Brief explanation of drawings]

The drawing is a plan view of the drive system of a spinning machine embodying the present invention. 1... Spindle frame, 2... Chin pulley shaft, 3... Chin pulley, 4... Spindle, 5... Spindle tape, 8, 28... Electromagnetic brake.

Claims (1)

[Scope of Claims] 1. A chimpully shaft braking device for a spinning machine, characterized in that brake means are provided in the vicinity of both ends of a chimpully shaft extending in the longitudinal direction of the machine frame of the spinning machine. 2. The chimpully shaft braking device for a spinning machine according to claim 1, wherein the braking capacity of one of the braking means installed apart from the drive motor is smaller than the braking capacity of the other braking means.