JPS6215260Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for fixing needles of a needle combing roller of an open-end spinning machine.

Conventionally, the needle combing roller of an open-end spinning machine has needle holes 1a in shell 1, as shown in Fig. 1.
The needle 2 was press-fitted into the needle hole 1a from the inside 1b of the shell 1, and then the boss 3 was press-fitted into the inside of the shell 1, and the needle 2 was fixed by frictional resistance with the needle hole 1a. In this method, if the fit is loose, there is a possibility that the needle 2 will come off from the shell 1 due to the centrifugal force generated when the combing roller rotates at high speed, and conversely, if the fit is too strong, the needle 2 may come off due to the centrifugal force caused by the high speed rotation of the combing roller. Not only is it difficult to assemble because a large pressing force is required, but also the degree of deformation of each needle hole 1a is large, resulting in problems such as distortion of the entire shell 1. To solve this inconvenience, use needle 2 and needle hole 1.
The tolerance of the diameter of a must be within a limited range, and manufacturing precision is required.

As shown in FIG.
There is also a combing roller that fixes the needle 5 by adhesive force with the resin 6 by injecting it, but with this method,
When the resin 6 solidifies, air bubbles are generated and the adhesion is weak in some places, causing variations in the holding power of the needle 5.
Further, due to the contraction of the resin 6 during solidification, there arises an inconvenience that the needle height changes.

The present invention was made in order to eliminate the above-mentioned conventional drawbacks.The purpose of this invention is to provide a groove on the inside of the shell which is the needle planting part of the combing roller, provide a needle hole in the groove, and insert a needle into the needle hole. A needle with a flattened base that is larger in diameter than the hole is planted, and then
To provide a combing roller that is easy to assemble and has high precision by press-fitting a boss into the inside of a shell and fixing a needle.

Below, an example embodying the present invention is shown in Figures 3 to 3.
FIG. 5 will be explained.

In the drawing, 7 is a shell of the combing roller, which has a groove 7b formed in the vertical direction, that is, in a direction parallel to the axis of rotation, on its inner circumferential surface 7a, and a needle hole 7c is provided in the groove. There is.

A needle 8 having a flat base 8a having a larger diameter than the needle hole 7c is inserted into the needle hole 7c, and a boss 9 is press-fitted into the inner peripheral surface 7a of the shell 7. 10 is the axis of the combing roller, 11
is a bearing that supports the shaft 10, and 12 is a pulley connected to the shaft 10.

The advantage of the combing roller configured as described above is that the needle 8 is held by the engagement of the base portion 8a, which has a larger diameter than the needle hole 7c, with the needle hole 7c. There is no need to fix the needle with a needle, and the tolerance between the needle 8 and the needle hole 7c can be increased to a certain extent, making it easier to plant the needle. or,
Since the position of the needle 8 can be regulated at the base 8a, the needle height becomes uniform, and since the needle 8 is not forced into the needle 8, no distortion occurs in the shell 7.

In the illustrated example, the grooves 7b are formed in a direction parallel to the axis of the combing roller, but they may be formed in a direction perpendicular to the axis or in a spiral direction.

As detailed above, in the present invention, a groove is provided on the inner peripheral surface of the shell of the combing roller, a needle hole is provided in the groove, and a needle having a diameter larger than the needle hole and whose base is flat is inserted into the needle hole. The needle is planted and a boss is press-fitted inside the shell to secure the needle.
There is no need to fix the needle by frictional resistance with the needle hole, and the tolerance between the needle and the needle hole can be increased, making it easier to plant the needle.Also, since the position can be controlled at the base of the needle, the needle height can be made even. Additionally, since the needle is not forced into the shell, no distortion occurs in the shell.

[Brief explanation of the drawing]

1 and 2 are side sectional views showing an embodiment of a conventional device, FIG. 3 is a side sectional view showing an embodiment of the present invention, FIG. 4 is a top view thereof, and FIG. 5 is a side sectional view showing an embodiment of the present invention. It is a side view showing a needle shape. 7... Ciel, 7b... Groove, 7c... Needle hole, 8
...Needle, 8a...Base, 9...Boss.

Claims (1)

[Scope of utility model registration request] The shell, which is the needle planting part of the combing roller, has a groove on the inside thereof, a needle hole is provided in the groove, and a needle having a diameter larger than the needle hole and having a flattened base is inserted into the needle hole, Furthermore, a combing roller for an open-end spinning machine, in which a boss is press-fitted inside the shell to fix a needle.