JPH04331062A - Roller - Google Patents

Abstract

PURPOSE:To provide a roller that is suitably used in processing a woodworking product and capable of abrading a complex form work automatically. CONSTITUTION:In this roller 10, a hard rubber body 16, a sponge body 18 and a metallic ring body 20 are all inserted into a shaft body 12, and each locking ring body 14 is attached to both ends. The roller 10 unified in one like this is attached to a grinding attachment (unillustrated herein). In succession, the roller 10 is made contact with an abrasive belt 52 being displaced in the reverse direction of wood 50 to be conveyed by this grinding attachment, whereby this wood 50 is abraded along a circumferential surface form of the sponge body 18. Accordingly, using this sponge body 18 formed into a desired form, any form of the wood 50 is grindable.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller for polishing corners of curved surfaces of lumber and the like into a predetermined shape.

0002

2. Description of the Related Art In order to provide a product with an aesthetic appearance rather than pursuing functionality, curved surfaces are often formed on the edges, especially in wood products. Recently, the shapes of decorative parts have become more complex, and as a result, there has been a demand for more sophisticated and efficient processing techniques.

0003

[Problem to be solved by the invention] Conventionally, polishing of this type of edge, etc. has had to rely on manual labor due to its complexity, requiring a lot of processing time, and has not been very efficient. Not improving. Although automation is possible for workpieces with simple surface shapes, no automated processing equipment has been developed for complex workpieces, for example, workpieces with curved cross-sections at several points.

The present invention was made in order to solve this type of problem, and it provides a roller that is suitably used for processing wood products and is capable of automatically polishing workpieces of complex shapes. The purpose is to provide

In particular, it is an object of the present invention to provide a roller that can reliably and easily obtain a beautiful polished surface even if the hardness of the wood to be processed differs depending on whether it is in spring or winter.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a roller including a shaft body, a plurality of elastic bodies fitted to the shaft body, and a plurality of elastic bodies fitted to the shaft body. a holding member held on the shaft body, and the plurality of elastic bodies cooperate to form a circumferential surface corresponding to at least a portion of the workpiece to be polished.

[0007]

[Operation] The roller engages with the shaft that constitutes the polishing device. The roller integrated with the polishing device in this way is
It comes into contact with a polishing belt attached to a polishing device and rotates following the rotational action of the belt. Therefore, since the shape of the polishing belt changes depending on the surface shape of the roller, if the circumferential surface shape of the roller is made complex, the workpiece will be polished along that shape.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the roller according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a roller 10 according to the present invention. The roller 10 basically consists of a shaft body 12, a locking ring body 14, a ring-shaped hard rubber body 16, a plurality of sponge bodies 18 as ring-shaped elastic bodies, and a metal ring body 20. has been done.

The shaft body 12 is a cylindrical body having a metal hole 22, and a concave groove 24 is formed in a part of the inner peripheral surface of the wall defining the hole 22. Holes 26a and 26b penetrating from the outer circumferential surface to the inner circumferential surface of the shaft body 12 so as to communicate with the groove portion 24 are formed obliquely with respect to the axial direction of the shaft body 12. There is. The hole 2
6a is formed at a distance L from one end surface, and similarly, the hole 26
b is formed at a distance L from the other end surface. in this case,
Both distances L are substantially equal. Further, a scale 28 is provided on the outer circumferential surface of the shaft body 12 on the side opposite to the groove portion 24 (see FIG. 2). The scale 28 may, for example, define a recess along the axis of the shaft body 12 and be embedded in this recess.

A slit 30 is provided in a part of the metal ring part of the locking ring body 14, and screw holes 32 are formed on both sides of the slit 30, and a screw 34 is screwed into the screw hole 32. It is designed to be inserted and tightened.

[0012] The sponge bodies 18 are usually formed by laminating sponge bodies 18 having the same thickness on one roller 10, and have a surface shape corresponding to the surface shape of the wood to be processed. Of course, the desired surface shape may be obtained by a single sponge body 18;
The surface may be coated with a material harder than this.

The ring body 20 is used in a polishing device to ensure that the processed surface of the wood 50 is beautifully finished or to reduce the load on the rotational drive source when the roller 10 is mounted on two or more rotating shafts (not shown). This is used to divide the portion of the sponge body 18 that comes into contact with the polishing belt 52 (see FIGS. 3 and 4). That is, the ring body 20 of the roller 10
The portion does not come into contact with the polishing belt 52. As shown in FIGS. 3 and 4, when the abrasive belt 52 is brought into contact with the divided rollers 10 and 10a when forming a processed surface corresponding to the processed surface of the wood 50, the manner in which the load is applied is reduced. It becomes uniform.

[0014] Roller 1 composed of such members
0 is integrated as shown in FIG. That is, a sponge body 18 and a ring body 20, which are molded into a desired shape, are sandwiched between hard rubber bodies 16, which are then tightened and fixed by a locking ring body 14. At that time, the hardness of the sponge body 18 can be changed by fixing the locking ring body 14 at a predetermined position on the scale 28 in accordance with the material of the lumber used and the difference between spring and winter. can. Alternatively, a member having better abrasion resistance than the sponge body 18 may be attached to the outer peripheral surface of the sponge body 18. The wear-resistant member is preferably made of compressed paper or synthetic resin, and preferably has a thickness of 0.1 mm to 3 mm.

On the other hand, the shaft body 40 of the polishing device to which the roller 10 is attached will be explained with reference to FIG. That is, the cylindrical tip has a tip 44 whose diameter is further reduced by the step 42, and a cylindrical convex portion 46 is formed on the side surface of the tip 44 at a position spaced apart from the step 42 by a distance L.

The roller 10 constructed as described above is used by being attached to the shaft body 40 of a polishing device in the following manner.

The integrated roller 10 as shown in FIG. 2 is inserted into the shaft body 40 of the polishing device. At this time, the protrusion 46 of the shaft 40 is engaged with the groove 24 of the shaft 12 of the roller 10, and the roller 10 is inserted while being guided. After this, the end of the shaft 12 of the roller 10 is connected to the step 4 of the shaft 40.
2. In this case, a convex portion 46 is formed at a position spaced apart from the step 42 by a distance L, while the roller 1
Since the hole 26a is formed at a distance L from one end surface of 0, the convex portion 46 can be accurately inserted into the hole 26a. Therefore, by rotating the roller 10 in the direction A relative to the shaft body 40, the convex portion 46 is engaged with the diagonal hole 26a and fixed. In this case, even if the shaft body 40 rotates in the direction B, the convex portion 46 engaged with the hole portion 26a is not displaced, and therefore the roller 10 does not come off from the shaft body 40. Furthermore, even when the roller 10 is inserted into the shaft body 40 of the polishing device from the opposite direction, since the hole 26b is provided in the shaft body 12 of the roller 10 at a distance L from the other end surface of the roller 10, The roller 10 is fixed to the shaft body 40 by the same effect as the hole 26a.

As shown in FIG. 3, the roller 10 fixed to the shaft 40 of the polishing device is rotated in a direction opposite to the direction of transport of the wood 50 as the workpiece being transported. By contacting the polishing belt 52, the contact shape of the polishing belt 52 is changed. That is, the surface shape of the polishing belt 52 relative to the wood 50 can be changed by the roller 10. Therefore, by displacing the polishing belt in the direction opposite to the transport direction of the wood 50, the surface of the wood 50 can be easily polished along the shape of the roller 10. Note that the remaining surface of the wood 50 is polished by another similarly configured roller 10a.

Here, damage to the sponge body 18 can be avoided by wrapping and attaching a member with excellent abrasion resistance formed by compressing paper to the outer peripheral surface of the sponge body 18. In addition, if the roller 10 is configured in this way, the roller 10 has a hard outer circumferential surface and a soft interior, so it absorbs vibrations of the shaft of the friction device, shocks, etc., and has the effect of not affecting the polishing of wood. There is also.

In this embodiment, the roller 10 holds the sponge body 18 and the ring body 20, but the sponge body 1
It may be configured with only 8.

[0021]

[Effects of the Invention] According to the roller according to the present invention, the following effects can be obtained.

That is, the roller engages with the shaft constituting the polishing device. The roller integrated with the polishing device in this manner comes into contact with the polishing belt attached to the polishing device, and rotates following the rotational action of the belt. Therefore, since the shape of the polishing belt changes in accordance with the shape of the circumferential surface of the roller, the workpiece is polished along this shape.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a roller and a shaft of a polishing device according to the present invention.

FIG. 2 is a partial cross-sectional view of a roller according to the present invention.

FIG. 3 is an explanatory diagram of wood forming using a roller according to the present invention.

FIG. 4 is an explanatory diagram of wood forming using a roller according to the present invention.

[Explanation of symbols]

10, 10a...Roller 12...Shaft body 14...Lock ring body 16...Hard rubber body 18...Sponge body 20...Ring body 24...Groove 40...Shaft of polishing device 50...wood 52...Abrasive belt

Claims (6)

[Claims] [Claim 1] Consisting of a shaft body, a plurality of elastic bodies that fit into the shaft body, and a holding member that holds the elastic body and the shaft body, the plurality of elastic bodies cooperate with each other. A roller characterized in that it forms a circumferential surface corresponding to at least a portion of a workpiece to be polished. 2. The roller according to claim 1, wherein the holding member is configured to be freely displaceable along the axis of the shaft, and the holding member adjusts the hardness of the elastic body. 3. The roller according to claim 1, wherein a scale is provided along the outer surface of the shaft in the axial direction to indicate the length from the end of the shaft. 4. The roller according to claim 1, wherein the elastic body is made of a sponge-like material. 5. The roller according to claim 1, wherein the member attached to the outer peripheral surface of the elastic body is harder than the elastic body. 6. The roller according to claim 1, wherein a ring body is fitted to the shaft body, and an elastic body is sandwiched between the ring body and the holding member. .