JPS595742Y2 - Spindle drive device for spinning machines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a spindle drive device for a spinning machine, and aims to improve work efficiency during disassembly and reassembly, and to reduce the manufacturing cost of the device.

In conventional devices of this type, in order to fix the chimpoule of the device to the chimpoo shaft, the chimpoo is directly tightened to the chimpoo shaft with a set screw that is threaded onto the boss part of the chimpoo. There was a structure to fix it.

In this case, it was inevitable that the shaft portion that the set screw abuts and presses would be dented and the area around it would bulge.

Therefore, during disassembly and reassembly work such as repair of equipment,
The raised part of the set screw left on the shaft makes it very difficult to remove the chimpu from the chimpu shaft and reinsert it, and the work efficiency is extremely reduced.

In particular, since a large number of chin pulleys, for example, several chin pulleys, are fitted one after another onto a single chin pull shaft, the closer the chin pulley is to the center of the shaft, the more the bulges left by set screws must be overcome. It takes a lot of effort just to insert and remove it.

Furthermore, in the case of spinning machines, it is common for there to be hundreds of machines in the same factory, so the labor due to the above-mentioned drawbacks is extremely large.

As a technique to overcome this drawback, there is a structure in which the chinpoo is fixed to the chinpoo shaft by screwing the taper sleeve in the shaft hole of the chinpoo with a lock nut, but this requires high-precision parts. However, the disadvantage is that the manufacturing cost of the device is extremely high.

The present invention incorporates a ring-shaped leaf spring in the annular groove for spring attachment in the shaft hole of the boss part of the chimpo-ri, and fixes the chimpo-ri to the chimpo-ri shaft with a set screw via this ring-shaped leaf spring. This is to improve the above drawbacks.

Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 and 2 show a spinning machine or a yarn twisting machine, in which countless spindles 2 are arranged in rows left and right along both front and rear edges of a base frame 1, and these spindles 2 are arranged in four rows on the front, back, left and right sides. They are driven as a set by each spindle drive device 3.

The structure of each spindle drive device 3 is such that a spindle drive belt 5 driven by a pulley 4 is stretched around a set of four front and rear spindles 2 while being tensioned by a tension device 6.

Each of the chimpules 4 is lined up and fixed to the left and right at appropriate intervals on the chimpu shaft 7, and the chimpu shaft 7 is pivotally supported while running vertically from side to side in the center of the base frame 1, and is pivotally supported at the left end of the base frame 1. It is driven by a drive unit 8.

Each belt tension device 6 is pivotally supported on a support shaft 9 so as to be able to freely swing in parallel with the support shaft 9. The support shaft 9 runs parallel to the front side of the chimpu shaft 7 and is fixedly supported by the base frame 1.

The chin puller 4 is a single-flange type chin puller, and a flange 4b for preventing the belt from coming off is formed only on the tension device 6 side, that is, the right side edge of the left and right side edges of the transmission peripheral surface 4a of the chin puller. .

Since the belt tension of the belt on the lower side of the chin puller 4 is directed to the right front, the spindle drive belt 5 does not come off the chin puller 4.

Figures 3 and 4 show longitudinal cross-sections of chimpu 4 made of resin and sheet metal, respectively, and the boss portion 10 of the latter is formed of lightweight and strong metal material or composite resin. A side plate 11 and a side plate/outer peripheral plate 12 are fixed to the portion 10 with countersunk rivets 13.

The structure for fixing the chimpuri 4 to the chimpuri shaft 7 is as follows.
It is structured as follows.

The boss part 10 of the chimpu 4 has a shaft hole 14 through which the chimpu shaft 7 is inserted, and the left end of this shaft hole 14 has a
An annular groove 15 for attaching a plate spring is formed, and a ring-shaped plate spring 16 is elastically biased and installed inside the annular groove 15, and is sunk into the groove bottom 15a of the annular groove 15 and pressed into contact with the annular groove 15.

The ring-shaped plate spring 16 is made of spring steel or the like, and one portion of its circumferential surface is divided by a slit H6a to form a discontinuous ring shape.

Further, on the outside of the annular groove 15, two screw holes 17 are located at an opening angle of about 20° from the outer circumferential surface of the boss portion 10 located outside the left end surface of the chin pulley 4 toward the axial center of the chin pulley shaft. A set screw 18 is screwed into this screw hole 17, and the set screw 18 is tightened so that the ring-shaped leaf spring 16 can be pressed.

Then, as shown in FIG.
4 and the ring-shaped leaf spring 16, and screw the setscrew 18 into the ring-shaped leaf spring 16.
The chimpu shaft 7 is tightened through the chimpu shaft 7 to fix the chimpo shaft 4 to the chimpo shaft 7.

At this time, as shown in FIG.
The area around point A, which equally divides 0°, receives pressure directly from the boss portion 10 without going through the ring-shaped leaf spring 16.

That is, the chimpo axis 7 has a circumference. It can be tightened strongly and stably at three equal parts.

In this case, the slit 16a of the ring-shaped plate spring 16 is positioned between both setscrews on the high arc side of the ring mounting groove 15.

When the set screw 18 is loosened, the ring-shaped leaf spring 16 is inserted into the annular groove 1.
5 and does not protrude inward from the inner circumferential surface of the shaft hole 14, so it does not get in the way when inserting the chimney shaft 7 into the chimney shaft 4.

Also in this case, the set screw 18 is connected to the ring-shaped plate spring 16.
Since the set screw 18 is pressed by the screw 18, the set screw 18 will not come off.

Since the present invention is configured as described above, it has the following effects.

(1) The structure uses a set screw to fix the Chinpoo to the Chinpoo shaft via a ring-shaped leaf spring that is elastically attached to the annular groove in the shaft hole of the boss of the Chinpoo. No more damage.

Furthermore, when the chimpo shaft is inserted into the chimpo mold, the ring-shaped leaf spring does not sink into the annular groove and become an obstacle.

Therefore, when the device is disassembled, repaired, and reassembled, the work efficiency of removing and inserting the chimpu into the chimpu shaft is greatly improved.

In that case, the set screw is pressed by the leaf spring, so
・Since the set screw does not loosen on its own, there is no chance of losing the set screw.

In the case of spinning machines, the above effect is significant because hundreds of threads are installed in the same factory.

(2) In the conventional structure in which the chinpu is fixed to the chinpu shaft using a taper sleeve and a lock nut, the taper sleeve fitting hole, the outer surface of the taper sleeve, and the lock nut threading part need to be machined with high precision. Furthermore, the cost of materials is also high, making the device extremely expensive to manufacture.

In contrast, in the present invention, the annular groove can be easily manufactured using a preform etc., and the ring-shaped leaf spring is also inexpensive, so it can be implemented easily and at extremely low cost.

The effect is significant in relation to the number of installed units mentioned above.

(3) The slit portion of the ring-shaped leaf spring attached to the annular groove for spring attachment is located on the superior arc side of the circumference of the annular groove for spring attachment, which is separated by two screw holes, so that the set screw is The spring plate tends to deform in the direction of diameter reduction when tightening, and there are two locations where the set screw presses the chimpuno through the leaf spring, and a location where the chimpuno and the chimpuno shaft come into contact in the direction of the resultant force of the two screws. It is possible to securely fix the chimpo to the chimpoo shaft using a total of 3 locations.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view of a spinning machine or yarn twisting machine, Fig. 2 is a longitudinal sectional side view, and Figs. 3 and 4.
5 is a partially enlarged vertical sectional view of the chimpu with the chimpu shaft inserted therein, and FIG. 6 is a sectional view taken along the line vI-VI of FIG. 5. 1...Base frame, 2...Spindle, 4.
... Chin pulley, 5... Spindle drive belt, 7... Chin pulley shaft, 10...
・Boss part, 15... Annular groove for spring attachment, 15
a... Groove bottom, 16... Ring-shaped leaf spring, 17... Screw hole, 18... Set screw.

Claims (1)

[Scope of utility model registration request] A large number of spindles 2 are arranged left and right along the front and rear edges of a base frame 1 of the spinning machine, and a chimpu shaft 7 is installed in the middle of the base frame 1.
are run from side to side and pivoted, and each chimpo 4 is externally fitted and fixed at appropriate intervals on the chimpo shaft 7, and each spindle 4 is attached to each set of spindles 2 and 4, which form a front and rear pair. The driving belt 5 is wound around the shaft hole 14 of the boss portion 10 of the chimpu 4, and a spring mounting annular groove 15 is formed in the shaft hole 14, and the spring mounting annular groove 15 is intersected with the circumferential direction at one point on the circumferential surface. A ring-shaped leaf spring 16 having a slit 16a is installed,
The ring-shaped plate spring 16 is caused to sink into the spring mounting annular groove 15 by its own elastic force, and is pressed into contact with the groove bottom 15a, and an appropriate distance is maintained on the outside of the spring mounting annular groove 15.
A screw hole 17 is provided at each location, a set screw 18 is screwed into each screw hole 17, and the set screw 18 is tightened to the chimpu shaft 7 via the ring-shaped plate spring 16, so that the chimpo shaft 4 is attached to the chimpo shaft 7. A spindle drive of a spinning machine characterized in that the slit H6a of the ring-shaped leaf spring 16 is located on the superior arc side of the circumferential portion separated by the screw holes 17 of the annular groove 15 for spring mounting. Device.