JPS6215254Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a support structure for a drive pulley that receives a driving force from a drive motor in a spinning machine such as a spinning machine or a yarn twisting machine using a spindle drive system using a spindle tape.

BACKGROUND ART In recent years, there has been a noticeable trend toward high-mix, low-volume production in many industrial fields, and the spinning industry is no exception. In other words, there is a growing tendency to produce a wide variety of spun yarns in small quantities over a short period of time, and this requires frequent changes in the rotational speed of the spindle for winding the spun yarns. . This change in rotational speed is actually performed by replacing the drive pulley to which the rotation from the drive motor is transmitted with one of a different diameter.

In this case, in the conventional spinning machine, as will be described later, replacing the drive pulley was troublesome and required difficult centering work.

Purpose of the invention The purpose of this invention is to provide a drive pulley support structure that eliminates the above-mentioned problems, allows for easy drive pulley replacement work, and eliminates the need for difficult centering work. be.

Embodiment An embodiment of this invention in a spinning machine will be described below with reference to FIGS. 1 to 3. Spindle frame 1 with multiple spindles 4
along its longitudinal direction.
is suspended horizontally, and as shown in FIG. 2, a large number of chimpules 3 are fixed on the chimpully shaft 2 at predetermined intervals. A spindle tape 5 that goes around a set of four spindles 4 is hung on this chimpully shaft 3.
As the chimp pulley shaft 2 rotates, each spindle 4 is rotated via the spindle tape 5. Note that the tension of the spindle tape 5 is adjusted by a tension pulley 6.

One end of the chimp pulley shaft 2 is supported by a bearing 7 fixed to the spindle frame 1. Further, in the spindle frame 1 of the bearing 7, an electromagnetic brake 8 for applying a braking force to the chimpully shaft 2 is fixed.

A pair of self-aligning bearings 12 and 1 are provided in the outside frame 9 located at the end of the spindle frame 1 via brackets 10 and 11, respectively.
3 are fixed, and a drive shaft 14 is rotatably supported between them. One end of the drive shaft 14 is connected to one end of the chimpulley shaft 2 by a coupling ring 15 at a position adjacent to the bearing 12. Also, between the two bearings 12 and 13, the drive shaft 14
A drive pulley 16 is removably fixed on top. This drive pulley 16 is fixed using the key 1.
This is done by fitting 7 into the keyway 18 and tightening the screw 19. A belt 20 is hung between the drive pulley 16 and a pulley (not shown) on the motor shaft of a drive motor (not shown), and as the drive motor rotates, the belt 20
The drive pulley 16 is rotated together with the drive shaft 14 through the coupling ring 15, and the chimney pulley shaft 2 is rotated through the coupling ring 15.

Next, based on FIG. 3, the self-aligning bearing 1
The configurations of Nos. 2 and 13 will be explained. Said bracket 1
A pair of left and right bearing covers 22 are fixed to the bearing covers 0 and 11 by bolts 21, respectively, and an insertion hole 23 through which the drive shaft 14 is inserted is formed in the center thereof. Further, a ball bearing 24 is held between both bearing covers 22, and a tapered slope 25 is formed on the inner peripheral surface of the ball bearing 24. On the other hand, a sleeve 26 having a substantially C-shaped cross section is fitted over the drive shaft 14 in the bearing cover 22, and the sleeve 26 has a tapered outer peripheral surface and a threaded portion 27 on the outer periphery of one end. are doing. A nut 28 is screwed into the threaded portion 27.

When the nut 28 is tightened, the action of the thread between the nut 28 and the threaded portion 27 causes the nut 28 to move to the left in FIG.
6 is given the power to move to the right, but Natsu 2
8 engages with the left side surface of the ball bearing 24 and cannot move to the left, so only the sleeve 26 moves to the right. Therefore, the slanted outer peripheral surface of the sleeve 26 and the inner peripheral slope 2 of the ball bearing 24
5 are pressed into engagement with each other by their cam action, and the sleeve 26 is deflected inward against its own elasticity, and the sleeve 26 allows the drive shaft 1
4 is tightened. As a result, the drive shaft 14 is supported by the ball bearing 24 via the sleeve 26, and the drive shaft 1
4 and the ball bearing 24. Also, when the nut 28 is loosened, the sleeve 2
6 can be moved to the left in FIG. 3, thereby releasing the pressure contact between the ball bearing 24 and the sleeve 26, and releasing the tightening of the sleeve 26 to the drive shaft 14, so that the drive shaft 14 can be moved from the bearing. It can be pulled out from between the covers 22.

Although not shown in the drawings, the spinning machine of this embodiment is equipped with an auto-spring fan (pipe changing device) on the front side, and a device for driving the auto-spinning fan is provided on the outside of the outside frame 9. An out-end frame 29 containing a drive device is arranged. Further, the side surface of the out-end frame 29 facing the drive shaft 14 is open.

Now, in the drive pulley support structure configured as described above, in order to change the rotation speed of the spindle 4 and replace the drive pulley 16, first loosen the screw 19, and then
be able to move in the longitudinal direction of the shaft. Next, both bearings 1 supporting the drive shaft 14
Remove bolt 21 on the right side of numbers 2 and 13, and tighten nut 2.
After removing the bearing cover 22 on the 8 side, remove the nut 2.
8 to release the sleeve 26 from the drive shaft 14. At the same time, the coupling ring 15 is removed, and the chimp pulley shaft 2 and the drive shaft 14 are separated.

After doing this, move the drive shaft 14 to the right in Fig. 2 and attach it to the out end frame 2.
9 slightly into the drive shaft 14.
The coupling side end is pulled out from the left bearing 12, and a gap larger than the width of the drive pulley 16 is created between the left end of the drive shaft 14 and the bearing 12. As a result, the operator slides the drive pulley 16 against the drive shaft 14 and removes it from the space. and new drive pulley 16
into the drive shaft 14.

However, if the drive pulley 16 is difficult to slide due to rust even after loosening the screw 19, after removing the drive shaft 14 from the bearing 12, move the drive shaft 14 to the left and turn the opposite end to the right. By pulling it out from one bearing 13, the drive shaft 14 can be removed from between both bearings 12 and 13. In this way, the drive shaft 14 and the chimpulley shaft 2 are connected to each other between the bearing 12 and the bearing 7 on the spindle frame 1 side.
2, the drive shaft 14 can be short, and the drive shaft 14 can be removed very easily without removing the bearings 12, 13.

After removing the drive shaft 14 as described above, the drive pulley 16 is replaced with one having a different diameter.

After the replacement, the drive shaft 14 is supported between both bearings 12 and 13 in the reverse order of the drive shaft removal, and the drive shaft 14 and the chimpully shaft 2 are connected to the coupling 1.
5 may be used. In this case, as the nut 28 is tightened, the ball bearing 2
Centering between the ball bearing 24 and the drive shaft 14 is performed by the action of the inner peripheral slope 25 of No. 4 and the outer peripheral slope of the sleeve 26. Since the ball bearing 24 is already centered with respect to the chimpulley shaft 2 when it is assembled into the bearings 12 and 13, the centering between the ball bearing 24 and the drive shaft 14 is When this is done, centering between the drive shaft 14 and the chimpulley shaft 2 is performed as a result.

In contrast, in a conventional spinning machine, as shown in FIG. 4, a drive shaft 32 having a drive pulley 31 and a chim pulley shaft 33 are connected by a coupling 35 on the spindle frame 34 side.

Therefore, the drive shaft 32 is very long, and when the drive shaft 32 is removed to replace the drive pulley 31, even if the side of the out end frame 39 facing the drive shaft 32 is open, the out end It is impossible to pull out the drive shaft 32 to the side because the internal mechanism of the frame 39 gets in the way. Therefore, when removing the drive shaft 32,
A bearing 37 supporting the drive shaft 32,
38 must be removed from the outside frame 40 in its supported state, and then the drive shaft 32 must be pulled out from the bearings 37 and 38.

Therefore, not only does the task of replacing the drive pulley 31 become extremely troublesome, but when assembling the bearings 37 and 38 after replacing the drive pulley 31, the bearings 37 and 38 and the chimp pulley shaft 3 are
3. A troublesome centering work is required between the two.

Effects of the Invention As exemplified in the embodiments above, this invention rotatably supports a drive shaft by a pair of bearings at the end of a spinning machine frame, and connects one end of the drive shaft to one end of the chimpully shaft using a coupling. The drive pulley is fixed on the drive shaft between the two bearings, and by using self-aligning bearings as both bearings, the drive pulley can be easily replaced and the centering Demonstrates an excellent effect that eliminates the need for work.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention, in which Figure 1 is a partial front view of a spinning machine, and Figure 2 is a sectional view showing the main parts of this invention. , FIG. 3 is a sectional view of the bearing. FIG. 4 is a partial front view showing a conventional spinning machine. 2...Chimpuri shaft, 3...Chimpuri, 4...Spindle, 5...Spindle tape, 9...Outside frame, 12, 13...
...bearing, 14...drive shaft, 15...coupling, 16...drive pulley.

Claims (1)

[Claims for Utility Model Registration] 1. The rotation of the drive motor is transmitted to the drive pulley via the drive belt, the chimp pulley shaft is rotated integrally with the drive pulley, and the rotation of the chimp pulley on the chimp pulley shaft is rotated. In spinning machines such as spinning machines and yarn twisting machines configured to transmit power to the spindle via a spindle tape, the drive shaft is rotatably supported by a pair of bearings at the end of the spinning machine frame, and
one end of the drive shaft is connected to one end of the chimp pulley shaft by a coupling;
A support structure for a drive pulley in a spinning machine, characterized in that the drive pulley is fixed on the drive shaft between the two bearings, and both bearings have a self-aligning function. 2. The support structure for a drive pulley in a spinning machine according to claim 1, wherein the coupling ring is disposed near one of the bearings.