JPH07243130A - Driven tape tensioner - Google Patents

Abstract

PURPOSE:To obtain a driven tape tensioner having a few parts, simple in scheme, and hardly causing fly waste adherence thereto. CONSTITUTION:A pulley supporting body 20 made up of a perpendicular part 13, a swing supporting part 14 and a weight attaching part 15 is integrally formed with a resin material, and the swing supporting part 14 is supported directly in a swingable way on a fixed shaft 6 formed extendedly in the longer direction of the machine frame and provided with a slit 18 holding a bolt 17 projected on the peripheral surface of the fixed shaft 6 and controlling the swing of the pulley supporting body 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension device for an endless drive tape wound around a plurality of spindles of a spinning machine.

[0002]

2. Description of the Related Art A conventional drive tape tension device 10
6 will be described with reference to FIG. 6, the tension pulley 102 around which the drive tape 101 is wound is a support piece 103.
The support piece 103 is rotatably supported by a bolt 105 attached to the upper end of an L-shaped support rod 104 by a bolt 105, and a swinging support piece 108 is attached to a substantially intermediate portion of the support rod 104 by a taper pin 107. Dynamic support piece 108
Is swingably supported by a support pin 110 integrally fixed to a fixed shaft 109 extending in the machine longitudinal direction, and a tension pulley 102 is attached to the lower end of the support rod 104 so that the tension of the drive tape 101 can be maintained. The weight 111 that rocks in the increasing direction is provided. Further, when the drive tape 101 is separated from the tension pulley 102 for some reason, the swing support piece 108
A regulation pin 112 that regulates the swing amount of the tension pulley 102 is fixed, and the regulation pin 112 is fixed to the fixed shaft 109.
The abutting member 113 that comes into contact with was attached.

[0003]

The conventional tension device 100 has a pulley supporting body constructed by integrally assembling the supporting piece 103 and the swing supporting piece 108 to the supporting rod 104, and a supporting pin attached to the fixed shaft 109. Since it is composed of a large number of components such as 110, the contact member 113, and the regulation pin 112 attached to the swing support piece 108, there is a problem that the assembly work takes time and the cost becomes high. Further, the tension device assembled with a large number of parts as described above has a complicated appearance, and particularly, the support piece 1 protruding laterally with respect to the vertical portion of the support rod 104.
03 and the rocking support portion 108 have a problem in that dust or the like generated around them is easily attached.

[0004]

From the above, the purpose of the present application is to
An object of the present invention is to provide an inexpensive tension device having a simple structure and a small number of parts. To achieve this object, in claim 1, the pulley support body is integrally formed of a resin material,
A swing support is formed at the lower end of the pulley support body, and the swing support is swingably supported by a fixed shaft extending in the machine longitudinal direction. It is characterized in that a locking elongated hole for restricting the swing amount of the pulley supporting body and for positioning in the longitudinal direction of the machine base is formed by locking with the protruding locking member. Another object of the present invention is to provide a tension device having a neat appearance and less dust attachment. In order to achieve this object, in claim 2, the pulley supporting body is directly supported on the upper end of the tension pulley. In addition, it is characterized in that it is composed of a vertical portion in which a swing support portion is directly formed at the lower end, and a weight mounting portion protruding laterally from the vertical portion.

[0005]

According to the present invention, the swing support portion of the pulley support body integrally formed of the resin material is swingably supported directly on the fixed shaft, and when the drive tape is disengaged from the tension pulley for some reason, it swings. The locking elongated hole formed in the support portion locks with the locking member protruding on the peripheral surface of the fixed shaft to regulate the swing amount of the pulley support body. According to the second aspect, the entire shape is clean and the amount of attached cotton wool is small.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a spindle rail 2 is arranged in a spinning machine 1 along a machine longitudinal direction, and a large number of spindles 3 are rotatably supported on the spindle rail 2. There is. These many spindles 3 are divided into a plurality of spindle sets S (shown in FIG. 2) with four as one set. Further, inside the spinning machine 1, there are provided a movable shaft 5 and a fixed shaft 6 extending along the machine longitudinal direction. The movable shaft 5 is operated by a drive motor (not shown) provided at one end of the spinning machine. It is possible to rotate. This movable shaft 5
The fixed shaft 6 has a plurality of drive pulleys 7 and a tension device 11 which will be described later at a position corresponding to the spindle set S.
Is provided. A drive tape 9 is wound around the four spindles 3 of each spindle set S, the drive pulley 7, and the tension pulley 8 of the tension device 11, and the spindle 3 is rotated by the action of the drive motor.

Next, the tension device 11 which is the main part of the present application will be described. The pulley support body 20 is integrally formed of a resin material and includes a vertical portion 13, a swing support portion 14, and a weight mounting portion 15. The vertical portion 13 has a U-shaped cross section, does not have a protruding portion on the side opposite to the weight mounting portion 15 and has a tension pulley 8 directly rotatably supported on its upper end. The swing support portion 14 at the lower end of the vertical portion 13 is a flange portion having a U-shaped cross section that projects along the fixed shaft 6, and is swingably supported by the fixed shaft 6. A weight 16 for swinging the tension pulley 8 in a direction in which the tension of the drive tape 9 is increased is positionally adjusted on the weight mounting portion 15 that projects laterally (rightward in FIG. 3) from the rear surface of the swing support portion 14. It is attached freely. Further, the rocking support portion 14 has a locking long hole 18 which locks with a bolt 17 screwed to the fixed shaft 6 to regulate the amount of rocking of the pulley supporting body 20 and to position in the machine longitudinal direction. Has been formed.

Next, the operation will be described. When the drive tape 9 is disengaged from the tension pulley 8 for some reason, the locking elongated hole 18 of the swing support portion 14 locks with the bolt 17 of the fixed shaft 6, and the swing amount of the pulley support body 20 is restricted. It is possible to prevent the pulley support main body 20 from swinging more than necessary and interfere with the spinning machine side to damage the device or the spinning machine side, and the operator can easily perform the repair work of the drive tape 9. You can Further, in the tension device 11 of the present embodiment, the pulley support body 20 including the vertical portion 13, the swing support portion 14, and the weight mounting portion 15 is integrally formed of a resin material, and the swing support portion of the pulley support body 20 is further formed. 14
Since it is directly supported by the fixed shaft 6, the number of parts can be reduced. Further, in the tension device 11 of the present invention, since the tension pulley 8 is directly supported on the upper end of the vertical portion 13 of the pulley support body 20, and the swing support portion 14 is directly provided on the lower end of the vertical portion 13, the drive tape 9 is wound. The pulley support portion and the swing support portion 1 with respect to the vertical portion 13 in the suspended state
4 does not project in the direction opposite to the weight mounting portion 15,
It is possible to minimize the attachment of fly dust etc. Further, the rocking support portion 14 made of resin is fixed to the fixed shaft 6 made of metal.
Is supported, so that the swing can be performed more smoothly than in the conventional case.

[0009]

As described above, in the tension device of the present application, the pulley supporting body is integrally formed of the resin material, and the swing supporting portion is formed at the lower end of the pulley supporting body. Is supported by a fixed shaft extending in the same direction so as to be swingable, and the swing support portion is locked with a locking member protruding from the peripheral surface of the fixed shaft to regulate the swing amount of the pulley support body. Since the locking long hole for positioning in the machine longitudinal direction is formed,
The number of parts is reduced, the assembling work can be easily performed, and the cost can be suppressed. Further, since the pulley supporting body is composed of a vertical portion that directly supports the tension pulley at the upper end and a swing supporting portion directly at the lower end, and a weight mounting portion that projects laterally from the vertical portion, The external shape is neat, and the attachment of flies and the like generated around it can be minimized.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of a spinning machine using a tension device of this embodiment.

FIG. 2 is an enlarged plan view of an essential part of FIG.

FIG. 3 is a front view of a tension device.

FIG. 4 is a side view of FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a front view of a conventional tension device.

[Explanation of symbols]

1 spinning machine, 3 spindles, 6 fixed shafts, 8
Tension pulley, 9 drive tape, 11 tension device, 12 pulley support body, 14 swing support part,
16 weights, 17 bolts, 18 locking slots

Claims (2)

[Claims] 1. A tension pulley is provided on an endless drive tape wound around a plurality of spindles of a spinning machine, and a pulley support body for rotatably supporting the tension pulley at its upper end is rocked with respect to a machine base. In a tension device for a drive tape, wherein the pulley support body is provided with a weight for swinging the tension pulley in a direction to increase the tension of the drive tape, the pulley support body is integrally formed of a resin material, A swing support portion is formed at the lower end of the pulley support body, and the swing support portion is swingably supported by a fixed shaft extending in the machine longitudinal direction. A driving tape tension device characterized in that a locking elongated hole is formed for locking the pulley supporting main body by locking with a locking member projecting on the surface and for positioning in the longitudinal direction of the machine base. 2. A pulley supporting main body comprising a vertical portion directly supporting a tension pulley at an upper end thereof and a swing supporting portion directly formed at a lower end thereof, and a weight mounting portion projecting laterally from the vertical portion. The tension device for a drive tape according to claim 1, wherein the tension device is a drive tape tension device.