JPH047871Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is capable of cutting and removing the journal fixed to the end of a hollow roll when the journal is worn out or broken. This invention relates to a tool for removing cutting debris inside a roll, which can easily and cleanly remove journal cutting debris inside the roll that is generated when replacing the journal with a new journal.

[Conventional technology]

There are many different structures for hollow rolls, but they basically consist of a body and a journal part that is fixed to a boss that is fixed to the end of the body. Since the journal portion wears out due to friction with the bearing and may break in some cases, it is necessary to replace the journal with a new one after a certain period of use.

The method for connecting the journal is to first drill the old journal with a small diameter drill, then drill the hole with a large diameter drill to remove the old journal, and then shrink fit the new journal into the boss. The most common method is to

However, when the old journal 6, which is fixed to the boss 5 by shrink fitting, is drilled as shown in FIG. 3, the journal 6 is cut inside the hollow body 4, as shown in FIG. Debris 8 gets inside. If such cutting waste 8 exists inside the body 4, abnormal noise or vibration of the roll may occur during rotation of the roll, or the cutting waste 8 may
The impact friction on the body 4 may cause wear on the body 4. Therefore, it is necessary to remove the cutting waste 8 after drilling.
If the roll is a hollow roll whose body 4 has a relatively small diameter, such as a guide roll often used for paper rolls, the diameter of the journal 6 is necessarily small, so the cutting waste 8 can be easily removed. Conventionally, the only method available was to remove the cutting waste 8 little by little from the holes 7 made by boring while standing or tilting the roll body 4 and rotating it.

[The problem that the idea attempts to solve]

However, in the above-mentioned cutting waste removal method, the inner side of the roll of the boss 5 to which the roll body is fixed forms a plane perpendicular to the axis of the roll, and the boss 5 has a flat surface perpendicular to the axis of the roll. It is difficult to remove the cutting waste 8 because there is a considerable distance between the tip of the hole and the inside of the roll body, and if the roll has a long body and is heavy, it is difficult to remove the cutting waste by one person. There was a problem in that the removal work of the cutting waste 8 was extremely dangerous.

The present invention is designed to prevent damage to the inside of the roll that occurs when the journal fixed to the end of the hollow roll becomes worn or broken, and when the journal is removed and replaced with a new one. To easily and cleanly remove journal cutting waste.

[Means to solve the problem]

As a result of various studies to solve these problems, the inventors of the present invention found that it is possible to easily move magnets to various positions inside the fuselage by inserting magnets through holes made by drilling. They completed the present invention by discovering that journal cutting waste can be easily and cleanly removed.

Hereinafter, the tool for removing cutting waste inside a roll according to the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a view showing an embodiment of the tool for removing cutting waste inside a roll according to the present invention, and FIG. 2 is a view showing a state in which the tool for removing cutting waste inside the roll shown in FIG. 1 is used.

In the drawing, 1 is a thin rod with a ring-shaped part 1a at the tip and a ring-shaped part 1a' in the middle if necessary, and 2 is a flexible material such as wire, thread, or string. It is a flexible linear body, and one end of the body is connected to a magnet 3 larger than the inner diameter of the ring-shaped portion 1a at the tip of the thin rod 1, and the other end is inserted through the ring-shaped portion 1a to attach at least the thin rod 1. It is pulled out to the vicinity of the end opposite to the ring-shaped portion 1a.

[Effect]

To remove cutting waste using the cutting waste remover inside the roll according to the present invention having such a structure, first remove the flexible linear body 2 at an arbitrary location outside the roll on the side opposite to the ring-shaped part 1a. Pull the magnet 3 to the ring-shaped part 1a, and then insert the thin rod 1 into the hole 7 made by drilling as shown in Fig. 2.
After inserting the tip of the magnet 3 into the desired position inside the body 4 of the roll, loosen the flexible linear body 2, lower the magnet 3 onto the inner surface of the body 4, and insert the thin rod 1 into the axis of the body 4. direction to make the cutting waste 8 adhere to the magnet 3, and then pull the flexible linear body 2 to attach the cutting waste 8 to the magnet 3.
The cutting waste 8 can be removed to the outside of the roll by drawing the thin rod 1 toward the ring-shaped portion 1a of the thin rod 1 and pulling the thin rod 1 out of the roll in this state. At this time, if a ring-shaped part 1a' is also provided in the middle of the thin rod 1 as shown in FIG. 1, the flexible linear body 2 will not separate from the thin rod 1, making the operation easier. This is preferable.

[Effect of idea]

The tool for removing chips inside a roll according to the present invention as described above includes a thin rod having a ring-shaped part at one end and preferably a middle part, and a magnet connected to the end to remove the ring-shaped part. Since it has an extremely simple structure consisting of a flexible linear body inserted through the ring-shaped part and pulled out to at least the vicinity of the opposite end, it can be manufactured at low cost and easily, and the inside of the roll according to the present invention can be easily manufactured. When using the cutting waste remover, cutting waste can be removed from inside the roll by attaching it to a magnet, so even the smallest cutting waste can be removed cleanly, and as a result, the roll can be reused (rotated).
There is no abnormal noise or roll vibration when the roll is removed, and anyone can easily remove the cutting waste from inside the roll by simply attaching it to the magnet and pulling it out. All you have to do is insert it into the body and move it,
It has many benefits, such as the ability to safely remove it by one person without the need to stand up or turn the roll, and its practical value is extremely great.

[Brief explanation of drawings]

Figure 1 is a diagram showing one embodiment of the tool for removing cutting waste inside the roll according to the present invention, Figure 2 is a diagram showing how the tool for removing cutting waste inside the roll of Figure 1 is used, and Figure 3 is a hollow It is a sectional view showing an example of a type of roll. 1... Thin rod, 1a, 1a'... Ring-shaped part, 2
... Flexible linear body, 3 ... Magnet, 4 ... Body, 5
...Boss, 6... Journal, 7... Hole, 8...
Cutting waste.

Claims (1)

[Claims for Utility Model Registration] 1. A flexible linear body 2, to which a magnet 3 is connected at one end, is inserted through a ring-shaped portion 1a provided at the tip of a thin rod 1, and is attached to at least the ring-shaped portion 1a.
A tool for removing cutting waste inside the roll, characterized in that the tool is pulled out to near the end on the opposite side. 2. The tool for removing chips inside a roll according to claim 1, wherein a ring-shaped portion 1a' through which the flexible linear body 2 is inserted is also provided in the middle portion of the thin rod 1.