JPS6234929Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a thread wrapping prevention cover.

In equipment that processes yarn, such as synthetic fiber false twisting equipment and stretching equipment, yarn may wind around the feed roller that feeds the yarn due to single yarn breakage or other causes. When the yarn starts to wind, unless the rotation of the roller is stopped, the yarn will wrap around the roller circumferential surface, and then fall from the end of the roller to the shaft of the roller and wrap there, and if left still, it will support the shaft. The threads can also enter the inside of the bearings and seize them, damaging the rollers and bearings and causing serious accidents.
Therefore, it is of course necessary to detect and treat thread wrapping as early as possible, but also measures should be taken to prevent a major accident from occurring even if a small amount of thread wrapping occurs. It is desirable to keep it.

The present invention is a yarn wrapping prevention cover devised from the above-mentioned viewpoint, that is, it consists of a cylindrical part that can be loosely inserted into the shaft of a feed roller, and flange-like projections at both ends of the cylindrical part. The outer diameter of one side of the flange-like overhang is slightly smaller than the inner diameter of the end of the feed roller, and the other side of the flange-like overhang is used as a fixed part and is fixed to the shaft support member in a coaxial arrangement with the shaft of the feed roller. An object of the present invention is to provide a wrapping prevention cover that is characterized in that it is possible to prevent wrapping.

Next, the present invention will be explained by showing examples.

FIG. 1 is a perspective view showing the simplest example of the wrapping prevention cover according to the present invention. The cylindrical portion 1 and the flange-like projecting portions 2 and 3 are integrally made of cast iron. Hole 4 is a bolt insertion hole for fixing this cover.

The cover in Figure 1 is shown in Figure 2 (partially cutaway plan view).
It is used in the manner shown in . That is, the shaft 6 of the feed roller 5 is inserted into the cylindrical portion 1 with its axis aligned, and the housing of the bearing 7 of the shaft 6 is inserted into the flange-shaped projecting portion 3 using the bolt insertion hole 4. 8 with bolt 9. The dimensions of each part of the cover are as follows: In this state, the inner circumferential surface of the cylindrical portion 1 and the surface of the shaft 6 do not come into contact with each other, and the flange-like projecting portion 2 enters into the recess 11 on the end surface of the feed roller 5, and the flange The tip circumferential surface 12 of the shaped protruding portion 2 faces the circumferential wall 13 of the end face recess 11 of the feed roller 5 with an extremely small distance therebetween.

Thus, when the cover of the present invention is attached,
An annular groove 14 is formed between the feed roller 5 and the bearing 7 by a stationary wall surface. Therefore, even if the yarn begins to wind on the feed roller 5 during operation of the device and then collapses from the end of the roller, there is almost no growth of the wound yarn, and the fallen yarn is It does not enter the recess 11 and wrap around the shaft 6.

The cover of the present invention is not limited to the example shown in FIG. 1, but the cover shown in FIG.
It may be provided with additional protrusions or the like. FIG. 3 is a sectional view showing one example. In this example, the feed roller side flange-like overhang 15 has an annular protrusion 16 extending from its tip in parallel to the central axis, and has a deep circumferential surface 17 facing the circumferential wall of the feed roller end face recess. Therefore, the effect of preventing the thread from entering is strengthened accordingly. Further, an annular protrusion 19 is also provided on the inner circumferential surface of the cylindrical portion 18, and the top surface 20 of the annular protrusion 19 approaches the shaft until it almost touches the shaft. Even if the thread enters toward the shaft through the gap with the peripheral wall of the shaft, the thread wrapped around the shaft can be prevented from moving further toward the bearing. Further, the cover fixing means is not limited to the example shown in FIG. It may be formed integrally with the flange-like projecting portion 3 in the example shown in FIG.

Since the anti-wrapping cover according to the present invention has the above-described structure and method of use, it can extremely effectively prevent the yarn from wrapping around the shaft beyond the roll surface, and can even prevent the thread from wrapping around the shaft due to the wrapping. It is also possible to eliminate accidents caused by damage to rollers and rollers. In addition, even if the thread wrapped around the roller surface collapses from the end of the roller and falls onto the cover, the cover remains stationary while the roller rotates, so removing the thread from this area is easy and less dangerous. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a partially cutaway plan view showing how the cover of Fig. 1 is used, and Fig. 3 is a sectional view of another embodiment of the invention. . 1, 18...cylindrical part, 2, 3, 15, 21...
Flange-like overhang, 5...Feed roller, 6
...Shaft, 7...Ball bearing.

Claims (1)

[Scope of utility model registration request] It consists of a cylindrical part with an inner diameter that can be loosely inserted into the shaft of the feed roller, and a flange-like protrusion at both ends of the cylindrical part, and the outer diameter of one of the flange-like protrusions is greater than the inner diameter of the end of the feed roller. 1. A thread-wrapping prevention cover for a roller shaft, characterized in that the cover is slightly smaller in size and can be fixed to a shaft support member coaxially with the shaft of a feed roller by using the other side of the flange-like projecting portion as a fixed portion.