JPH0749609B2 - Ring spinning machine spindle drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a spindle that is rotated by tangential contact between each spindle drive pulley and a pair of endless drive belts, each endless drive belt having an opposing parallel run. A pair of endless drive belts for rotating the spindle.
The endless drive belts of each pair are circularly driven in two different circulation planes, each endless drive belt is driven by a common drive pulley arranged in the curved traveling section, and deflection pulleys are provided at deflection points at both ends of the parallel traveling section. A spindle drive for a ring spinning machine or the like.

[0002]

In a ring spinning machine, individual spindles arranged on the two belt circulation planes of the spinning machine have a single endless drive which makes tangential contact with the rotating pulleys of all the spindles. It is known to be rotated by a belt. The endless drive belt is driven by a motor. Suitable tensioning rollers are provided between adjacent pairs of spindles to ensure sufficient tangential contact. However, this structure is difficult to start when the number of spindles to be driven is very large.

It has already been proposed to drive an endless drive belt by several drive units distributed along the spinning machine inside the belt periphery. The drive belt is deflected towards the drive unit by two deflection pulleys. To prevent the belt section from moving in two different circulation planes, the two deflection pulleys are arranged in the same circulation plane and are spaced apart in the longitudinal direction of the spinning machine, which is Means that these spindles in positions corresponding to are not driven by the drive belt.

Therefore, it is necessary to provide each drive unit with a second belt for driving the spindle that does not engage with the main belt. This second belt is driven by an associated pair of deflection pulleys.

However, this complicates the structure of the spinning frame in each drive unit. Furthermore, when starting,
All drive units must be accelerated at the same speed so that the main belt is not subject to slippage or tension irregularities resulting in increased belt wear or reduced life.

The known construction has the further disadvantage that, as a result of the arrangement of the deflection pulleys, the winding angle of the main belt around the drive pulley of the drive unit is limited and cannot exceed a certain value. As a result, a large number of drive units are generally required to prevent slipping, given the same number and characteristics of spindles.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drive device of the above type which has a simple construction, is inexpensive and which improves the drive conditions for various spindles in the sense of preventing slippage as much as possible. This is to eliminate the above-mentioned drawback.

[0008]

SUMMARY OF THE INVENTION The above object is according to the invention that a pair of deflecting pulleys cooperate with the drive pulleys in opposite diametrically opposed positions and in the different circulating planes to provide each curve of the endless drive belt. The traveling portion takes a substantially S-shaped path on the opposite side of the drive pulley with respective winding angles such that the traveling portion is wound around the entire circumference of the common drive pulley as a sum of both curved traveling portions. Achieved by

According to the invention, the two endless drive belts of each pair pass around the same drive pulley on opposite sides of the circumference of the drive pulley and in different circulation planes to sum the drive pulleys. As a whole, it is used for towing. This is not possible with a single belt wound as in the known art. Therefore, in the device of the present invention, the driving condition is improved, the total number of drive units can be reduced, or the number of driven spindles can be increased with respect to the same number of drive units, and further, the slip limit is large. Therefore, drive belt wear is reduced.

The drive pulley is associated with its own motor or adapted to receive motion from a transmission connected to a single motor. The device according to the invention does not have to be provided with auxiliary belts for driving the spindles excluded from the main drive, and furthermore, a single belt arrangement may only have associated deflection members and thus may include complex structures. Absent.
The deflecting member may be common to adjacent belts. Since each drive unit is associated with an independent pair of belts, there is no effect on the belts when there is a difference in acceleration of one unit relative to the other during start-up. The present invention will be described below with reference to the illustrated embodiments.

[0011]

The illustrated ring spinning machine 1 comprises a plurality of spindles 2 arranged in two planes of the spinning machine (only a few spindles are shown by way of example), each spindle being tangential to an endless drive belt, as is known. A drive pulley 3 which is engaged in a shape is provided below. The tailstock of the spinning machine 1 carrying the control member for the stretching unit 4a is shown at 4, while the spinning machine headstock mainly carrying the suction member is shown at 5. The pulling roller 6 is arranged between the pair of pulleys 3. These are all known.

To drive the spindle 2, the invention comprises a piecewise drive. The number of sections is two in this embodiment. The spindles 2 of the sections are the respective endless drive belts 7
Driven by a pair of a, 7b, each pair of belts rotates an equal number of spindles 2 on the two circulating planes of the spinning machine 1. The belts 7a, 7b of each pair need not drive the same total number of spindles 2. This can be inferred from FIG. In this figure, the left pair of belts 7a, 7b drives a smaller number of spindles 2 than the right pair. However, for economic reasons in manufacturing, it is preferable to divide the drive device so that each belt pair 7a, 7b drives the same number of spindles 2.

Each belt pair 7a, 7b is driven by its own drive pulley 8. The drive pulley comprises a main drive pulley arranged substantially symmetrically with respect to the track of the associated belt pair 7a, 7b. The pulley 8 is directly actuated by its own electric motor 9. Each belt pair 7a, 7b runs around a deflection pulley 10, 11 having a vertical axis. These pulleys are adjacent belts 7a, 7b
The drawing unit 4a is operated by known means (FIG. 2).

As shown in FIGS. 2 and 4, this arrangement allows adjacent belts 7a, 7b to alternate in different horizontal circulation planes, but each belt remains in its own plane and thus its respective plane. This means that regular operation of the spindle 2 is guaranteed. Two deflection pulleys 12 are additionally provided in the drive unit about the associated drive pulley 8 in diametrically opposite positions and in different circulation planes. Deflection pulley 1
2 is properly positioned to pass the belt 7a through both sides of the drive pulley 8 through a relatively wide wrapping arc.
7b follows a substantially S-shaped passage. The arcs occupy the entire circumference of the drive pulley 8 in total, that is to say in total. FIG. 5 shows the deflection pulleys 10 and 12 and the drive pulley 8.
The paths of the endless belts 7a and 7b that go around are shown by white arrows and black arrows, respectively.

The above arrangement makes it possible to use the entire circumference of the drive pulley 8 as a traction surface (even in different circulation planes). Therefore, by thus dividing the belt and arranging it symmetrically around the drive pulley 8, it is possible to obtain a total wrap angle equal to at least 360 ° in total. This is not possible if only one drive belt is provided, which passes over the drive pulley 8 in a known manner. With an equal number of driven pulleys, the improved full wrap angle provided by the device of the present invention provides a greater limit in preventing slippage, or alternatively, if it is possible to reduce the number of drive points along the spinning machine 1. As a result, the difficulty of drive synchronization is reduced.

For example, by appropriately disposing the deflection pulley 12 on the diameter parallel to the longitudinal direction of the spinning machine 1, the winding angle of each of the belts 7a and 7b exceeds 180 °, so that 2
The total winding angle of the three belts 7a and 7b is 36
Exceeds 0 °. For example, refer to the arrangement of the deflection pulley 12 and each belt shown by a chain line in FIG. Therefore, the large expense of arranging multiple belts is compensated by the large regularity of the spindle drive. All the irregularities of action do not affect the rest of the spinning machine,
They are removed directly in the parts of the spinning machine where their irregularities occur.

Instead of having individual motors 9 for each drive pulley 8, a single central motor 13 is provided on the headstock 5 of the spinning machine 1, for example as shown in FIG.
Various drive pulleys 8 can be driven via the transmission device 14 having

With the device according to the invention, the spindle drive is provided by adding to the mechanical part of the stretching unit 4a a power transmission in synchronism with the spindle 2, such as a motor 4b controlled by an inverter 4c according to frequency. , Can be separated from the stretching unit drive in order to take advantage of the regularity of operation of both drives.
The number of the separated spindle drive units can be different from the illustrated one, and the movement paths of the drive belts 7a and 7b of the drive pulley 8 are also to further improve the winding angle of the drive belt around the drive pulley 8. Can be varied by providing an additional deflection pulley on the.

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of a driving device of the present invention.

2 is a side view of the device of FIG. 1. FIG.

FIG. 3 is an enlarged view of a drive unit of the apparatus shown in FIG.

FIG. 4 is an enlarged view of a second embodiment of the driving device of the device of the present invention.

FIG. 5 is a diagram showing a circulation path of a drive pulley of each drive belt with a white arrow and a black arrow.

[Explanation of symbols]

 1 Ring Spinning Machine 2 Spindle 3 Drive Pulley 4a Stretching Unit 4 Tailstock 5 Spindle Base 6 Tension Roller 7a Drive Belt 7b Drive Belt 8 Drive Pulley 9 Electric Motor 10 Deflection Pulley 13 Deflection Pulley 13 Center Motor 14 Transmission Device

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP 62-177238 (JP, A) JP 52-110938 (JP, A) JP 62-502902 (JP, A)

Claims (9)

[Claims] 1. A respective spindle drive pulley (3),
A spindle (2) rotated by tangential contact with a pair of endless drive belts (7a, 7b),
Each of the endless drive belts (7a, 7b) includes a parallel traveling part that faces each other and a curved traveling part that connects the parallel traveling parts to each other at one end of the parallel traveling part.
b) is circularly driven in two different circulation planes for rotating said spindle, each pair of endless drive belts (7)
a, 7b) are driven by a common drive pulley (8) arranged in the curved traveling section, and a ring spinning machine is provided with deflection pulleys (10, 11) at deflection points at both ends of the parallel traveling section. In the spindle drive, a pair of deflection pulleys (12) cooperates with the drive pulley (8) in opposite diametrically opposed positions and in the different circulation planes so that each curved run of the endless drive belt is With a winding angle such that the curved running portion is wound around the entire circumference of the common drive pulley, a substantially S-shaped path is formed on the opposite side of the drive pulley (8). Characteristic ring spinning machine spindle drive. 2. The drive pulley (8) is operated by its own motor (9).
The device according to. 3. The drive pulley (8) is a transmission (1).
Device according to claim 1, characterized in that it is actuated by a single central motor (13) via 4). 4. A pair of endless drive belts (7a, 7b) pass around a common deflection pulley (11) respectively arranged at the other ends of their parallel running parts. The device according to. 5. Device according to claim 1, characterized in that each pair of endless drive belts (7a, 7b) moves in two different horizontal circulation planes. 6. The apparatus of claim 1, wherein different pairs of endless drive belts engage different numbers of spindles. 7. The apparatus of claim 1, wherein different pairs of endless drive belts engage the same number of spindles. 8. A deflection pulley (12) is provided on the endless drive pulley (8) and the endless drive belt (7a, 7).
2. Device according to claim 1, characterized in that b) is routed through the drive pulley (8) over angles of more than 180 ° each in different circulation planes. 9. A first endless drive belt (7a) and a second endless drive belt (7b), wherein the first endless drive belt (7a) and the second endless drive belt (7b) are in different circulation planes. The first endless drive belt and the second endless drive belt each include a parallel traveling portion that faces each other, and a curved traveling portion that connects the parallel traveling portions to each other at one end of the parallel traveling portion. 8) and means for rotating said drive pulley (8), wherein a pair of first deflection pulleys (8) disposed adjacent to said drive pulley and in substantially diametrical relation thereto ( 12)
And a pair of second deflection pulleys (10) arranged one at each location between each of the parallel traveling portions and the curving portion traveling portion, and curving the first endless drive belt (7a). The part passes around one half of the drive pulley (8), both second deflection pulleys (10) and one first deflection pulley (12), and passes through the second endless drive belt (7b). The curved running part of (1) passes around the opposite half of the drive pulley (8), both the second deflection pulleys (10) and the other first deflection pulley (12). Drive mechanism.