JPH0321896Y2 - - Google Patents

Description

[Detailed explanation of the idea] Industrial applications The present invention relates to a polishing pad.

Conventional Technology Conventionally, various types of polishing pads that are attached to and driven by the drive unit of a polishing machine have been used for rough polishing, final polishing, etc. of wood surfaces, metal surfaces, etc. in the wood industry, metal processing industry, etc. has been done. These polishing pads are constructed so that the coated abrasive paper, which is a consumable item, can be easily replaced with a new one, so that the coated abrasive paper is detachable. As one conventional configuration example for this purpose, the polishing pad is simply provided with an adhesive surface made of a flat synthetic leather, etc., and on the other hand, a coated abrasive paper with an adhesive layer provided on the back surface is prepared. In some cases, the coated abrasive paper was attached and fixed to the adhesive surface of the polishing pad via an adhesive layer on the back surface. In addition, as another conventional configuration example, an adhesive surface made of Magic Tape (registered trademark) is provided on the side of the polishing pad, and coated abrasive paper with a layer of nylon pile applied to the back surface is prepared. In some cases, the coated abrasive paper was attached and fixed by intertwining the nylon pile layer on the back side with the Velcro layer of the abrasive pad as needed.

Problems that the invention aims to solve With the conventional polishing pads mentioned above, it is necessary to apply an adhesive or nylon pile to the back side of the coated abrasive paper, which inevitably increases the price of the coated abrasive paper. It had become that much higher. In addition, as in the past, the bonding layer between the adhesive surface of the synthetic leather and the adhesive layer on the back side of the coated abrasive paper and the bonding layer between the Velcro tape and the nylon pile have sufficient cushioning properties against the coated abrasive paper. There was also a problem in that it was difficult to make the polished surface of the coated abrasive paper accurately follow the shape of the complicated polished surface. Furthermore, in the conventional method of attaching coated abrasive paper to the adhesive surface of synthetic leather via an adhesive layer, the initial adhesive strength of the adhesive usually decreases as the temperature decreases. In addition, when trying to remove the coated abrasive paper from its synthetic skin in order to replace the coated abrasive paper, there was a problem in that it became difficult to peel off the coated abrasive paper from its synthetic skin.

An object of the present invention is to provide a polishing pad that can overcome these conventional problems.

Means for Solving the Problems According to the present invention, in a polishing pad of the type that is attached to and driven by the drive section of a polishing machine, an adhesive rubber sheet is provided as a means for detachably attaching the coated abrasive paper. The adhesive rubber sheet is made of adhesive rubber such as urethane rubber with a thickness of about 3 mm and has adhesive properties on its own surface that allow it to removably adhere the back side of the coated abrasive paper. .

Embodiments Next, the present invention will be described in more detail with regard to embodiments of the present invention based on the accompanying drawings.

The accompanying drawing shows a polishing pad in a perspective view as an embodiment of the present invention.

The polishing pad of this embodiment, like the conventional rotary polishing pad, has a truncated conical pad base 1 fixed to a pad base frame 2, and is connected to the pad base 1 via a metal plate 3. It has mounting screws 4 attached. The mounting screw 4 is used to mount and fix the polishing pad so that the center of rotation of the pad base 1 is aligned with the center of rotation of the rotational drive section of the polishing machine. In this embodiment, the flat surface of the pad base 1 is provided with a plurality of openings 1A for sucking and removing polishing debris caused by polishing, but the present invention is not limited to this. The same applies to things that don't exist. In the polishing pad of this embodiment, an adhesive rubber sheet (urethane rubber, etc.) 5 is used as a means for removably attaching the coated abrasive paper to the flat surface of the pad base 1 using a suitable adhesive. It is firmly fixed. This adhesive rubber sheet (urethane rubber, etc.) 5 has a plurality of openings 5A that match the openings 1A provided on the flat surface of the pad base 1.

Adhesive rubber sheet (urethane rubber, etc.) 5 is
For example, it is manufactured by Shinto Cello Sangyo Co., Ltd. and sold by Kano Shoji Co., Ltd. under the product name "Newtack S".
It is preferable to use adhesive rubber sold as "(Sheet)". Since this adhesive rubber has adhesive properties on its own surface, it can be attached to the surface of coated abrasive paper without any adhesive being applied to the back surface of the coated abrasive paper. Furthermore, since the adhesive strength of this adhesive rubber does not vary significantly with temperature, coated abrasive paper can be easily attached to and removed from it in both summer and winter. In addition, if the surface of this adhesive rubber becomes dirty, its adhesiveness can be easily restored by washing it with water or other appropriate liquid, so you can apply the abrasive paper as many times as you like. Can be applied and removed repeatedly. Furthermore, this adhesive rubber
Since it also has sufficient cushioning properties, it also allows the abrasive surface of the coated abrasive paper attached thereto to easily follow the complex shape of the surface to be polished.

After experimenting with various thicknesses of the adhesive rubber sheet (urethane rubber, etc.) 5 provided in the polishing pad of the present invention as described above, we found that if it is too thin, it will not be sufficient in providing the cushioning properties described above. It has been found that if it is too thick, the coated abrasive paper attached thereto will wrinkle more easily. It has been found that the appropriate thickness of the adhesive rubber sheet (urethane rubber, etc.) for the polishing pad of the present invention is about 3 mm.

Effects of the invention As mentioned above, the polishing pad of this invention has a 3mm
By forming an adhesive rubber sheet with adhesive rubber such as urethane rubber with a certain thickness, the back side of the abrasive paper can be removably attached to the surface of the adhesive rubber sheet. The stickiness is given as follows. Therefore, the coated abrasive paper can be removably attached to the polishing pad without applying an adhesive or adding nylon pile to the back side of the coated abrasive paper. It can be made very cheap. On top of that,
By setting the thickness of the adhesive rubber to about 3 mm, the coated abrasive paper attached to it will not wrinkle, and the abrasive surface of the coated abrasive paper attached to it will not overlap with the surface to be polished. It also provides sufficient cushioning to allow it to easily conform to complex shapes. Furthermore, if the surface of this type of adhesive rubber that gives it tackiness becomes dirty, its tackiness can be easily restored by washing it with a suitable liquid such as water. Therefore, the coated abrasive paper can be applied and removed as many times as desired, and this is because the environment in which this type of abrasive pad is used is a highly soiled environment where dust such as abrasive debris is scattered.
This is an important effect.

[Brief explanation of the drawing]

The accompanying drawing is a perspective view showing a polishing pad as an embodiment of the present invention. 1... Padded base, 1A... Opening, 2... Padded base frame, 3... Metal plate, 4... Mounting screw, 5... Adhesive rubber sheet, 5A... Opening.

Claims (1)

[Scope of utility model registration request] In a type of polishing pad that is attached to and driven by the drive unit of a polishing machine, an adhesive rubber sheet is provided as a means for removably attaching the coated abrasive paper, and the adhesive rubber sheet is attached to the back side of the coated abrasive paper. A polishing pad characterized in that it is made of adhesive rubber such as urethane rubber with a thickness of about 3 mm and has adhesiveness on its surface that allows it to be attached to and detached from.