JP2016068247A - Cushioning grindstone and manufacturing method of cushioning grindstone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushioning grindstone having a cushioning structure, a manufacturing method of the cushioning grindstone and use of the cushioning grindstone, by providing the cushioning grindstone that is a roll-shaped elastic body on the inside of a grindstone body.SOLUTION: A cushioning grindstone 100 comprises a hollow annular washer 30 and a roll-shaped grindstone body 10. The roll-shaped grindstone body 10 is formed on the outside of the hollow annular washer 30, and has a roll-shaped elastic body on the inside. A manufacturing method of the cushioning grindstone 100 includes (a) a step of making the depth of an annular groove part smaller than a thickness of a half of the roll-shaped grindstone body 10 or equally forming in a thickness of the half, by forming the annular groove part by cutting one side of the roll-shaped grindstone body 10, (b) a step of hardening an elastic body after injecting the liquid elastic body into the annular groove part and (c) a step of communicating the elastic body of both sides by hardening the elastic body after injecting the liquid elastic body, by cutting the other side of the roll-shaped grindstone body 10 so as to correspond to the annular groove part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an improvement of a grindstone, and more particularly, to a buffer grindstone, a method for producing a buffer grindstone, and a use of a buffer grindstone, in which a roll-shaped elastic body is provided inside a grindstone main body to obtain a high buffering effect.

  Generally, in the production of electrolytic copper foil, copper electroplating is performed on the surface of the cathode roller to form a copper foil. The cathode roller is generally the highest grade pure titanium, and in order to produce a high quality copper foil, it is necessary to maintain the surface roughness of the cathode roller within a certain range. In the manufacturing process of the cathode roller, after the cutting of the surface is completed, the surface is polished in order to obtain a necessary surface roughness. Further, in the production process of the copper foil, an oxidation phenomenon occurs on the surface of the cathode roller due to electrolytic corrosion or the like, and a titanium oxide thin film layer is formed. Titanium oxide is a non-conductive substance, and the trace amount of titanium oxide loosens the crystal structure of the resulting copper foil. In the worst case, uneven oxide spots appear on the surface of the copper foil. May adversely affect properties and appearance quality. Therefore, the cathode roller can be used again after polishing again to remove the surface oxide layer and recover the surface roughness necessary for a good-quality copper foil.

  In the prior art, the surface of the cathode roller is polished by a grindstone (or also called a grinding wheel) formed by adding a phenol resin binder to a polyvinyl acetal resin or a phenol resin, and the necessary surface roughness is recovered. It was.

  Since the conventional grinding stone material is hard, when the roller is polished with the grinding stone, for example, if the transport vehicle passes or the motor operates for a long time, the surrounding environment will cause the screws to loosen and vibrate, and the buffering The roller could be damaged due to the shortage.

Therefore, an object of the present invention is to provide a buffer grindstone, a method for manufacturing the buffer grindstone, and a use of the buffer grindstone, which provide a roll-shaped elastic body inside the roll grindstone main body of the buffer grindstone to obtain a high buffer effect. .

(1) In order to solve the above-mentioned problem, according to the first embodiment of the present invention, the present invention is a shock-absorbing stone provided with a hollow annular washer and a roll-shaped grindstone main body, and the roll-shaped grindstone main body is the hollow annular washer. A shock-absorbing stone is provided which is formed on the outer side of the rim and has a roll-shaped elastic body inside.
(2) It is preferable that ratio of the internal diameter of the said roll-shaped elastic body and the internal diameter of the said roll-shaped grindstone main body is 1-1.8.
(3) It is preferable that ratio of the internal diameter of the said roll-shaped elastic body and the internal diameter of the said roll-shaped grindstone main body is 1.5.
(4) It is preferable that the ratio which the said roll-shaped elastic body accounts in the said roll-shaped grindstone main body is 1 to 50%.
(5) It is preferable that the ratio for which the said roll-shaped elastic body accounts in the said roll-shaped grindstone main body is 5 to 40%.
(6) The roll-shaped elastic body preferably has a Shore hardness of 15 to 35.
(7) The roll-shaped elastic body preferably has a Shore hardness of 20.
(8) The roll-shaped elastic body is preferably made of silicone, polyurethane, EVA and / or rubber.
(9) The manufacturing method of the buffer grindstone of (1) is as follows: (a) One side of the roll-shaped grindstone main body is cut to form an annular groove, and the depth of the annular groove is half that of the roll-shaped grindstone main body. Forming a thickness smaller than or equal to half the thickness; (b) injecting a liquid elastic body into the annular groove and then curing the elastic body; and (c) the roll-shaped grindstone body. It is preferable to include a step of cutting the other side so as to correspond to the annular groove portion, injecting the liquid elastic body, and then curing the elastic body to connect the elastic bodies on both sides.
(10) It is preferable that the buffer stone of (1) is used for polishing a roller.

  Since the buffer wheel of the present invention, the method of manufacturing the buffer wheel, and the buffer wheel have a roll-shaped elastic body inside the roll-shaped wheel body, the buffering ability can be improved. When the surface of the roller is polished using the buffer grindstone of the present invention, it is possible to solve the problem that the roller is scratched or the polishing is uneven. When the roller is polished by this, it is possible to prevent the roller from being scratched or unevenly polished due to vibration caused by a sudden impact.

FIG. 1 is a simplified diagram illustrating a shock-absorbing stone having a shock-absorbing structure according to an embodiment of the present invention.

(Buffer wheel)
Please refer to FIG. FIG. 1 is a simplified diagram illustrating a shock absorbing stone 100 having a shock absorbing structure according to an embodiment of the present invention. As shown in FIG. 1, a shock-absorbing stone 100 according to an embodiment of the present invention includes a hollow annular washer 30 and a roll-shaped grindstone main body 10 installed outside the hollow annular washer 30. The roll-shaped grindstone main body 10 has a roll-shaped elastic body 20 inside. As shown in FIG. 1, the hollow annular washer 30, the roll-shaped grindstone main body 10, and the roll-shaped elastic body 20 have the same circular center and are formed in circular shapes (that is, concentric circles having different radii). Present).

  According to the buffer grindstone 100 described above, the material of the hollow annular washer 30 is not limited, and may be made of various materials such as stainless steel, aluminum, rubber, or a general material such as plastic.

  According to the above-mentioned buffer grindstone 100, the material of the roll-shaped grindstone main body 10 is not limited, and any conventional material that can be used for the roll-shaped grindstone main body 10 can be used. It is preferable that the binder or the like is added to (PVA) resin or phenol resin, but it is not limited to these.

  According to the above-described buffer grindstone 100, since the roll-shaped elastic body 20 is used as a buffer substance, when the grindstone is located on the surface of the polishing wheel, it is affected by vibrations from the surrounding environment and the polishing object (for example, the wheel) It is possible to effectively prevent the scratch or polishing from becoming uneven. The roll-shaped elastic body 20 is preferably made of silicone, polyurethane (PU), EVA (Ethylene Vinyl Acetate Polymer) and / or rubber, but is limited to these as long as it can be used as a buffer material having elasticity. I don't mean.

  According to the buffer grindstone 100 described above, the ratio between the inner diameter of the roll-shaped elastic body 20 (see A in FIG. 1) and the inner diameter of the roll-shaped grindstone main body 10 (see B in FIG. 1) is 1-1. 8 is preferable, and 1.5 is more preferable. In the present invention, the “ratio” means the diameter of the inner edge of the roll-shaped elastic body 20 / the diameter of the inner edge of the roll-shaped grindstone main body 10. The larger the ratio, the closer the roll-shaped elastic body 20 is to the outside of the roll-shaped grindstone main body 10, and when the ratio is too large, the roll-shaped elastic body 20 is too close to the outside of the roll-shaped grindstone main body 10. There is a possibility that the polishing life is shortened (here, “polishing life” means that the roll-shaped grindstone body 10 is worn from the start of polishing until the roll-shaped grindstone main body 10 hits the roll-shaped elastic body 20, and is worn. Until it can no longer be polished).

  According to the above-described buffer grindstone 100, the ratio of the roll-shaped elastic body 20 in the roll-shaped grindstone main body 10 is preferably about 1 to 50%, more preferably 5 to 40%. In the present invention, the “ratio” is calculated from the width of the roll-shaped elastic body 20 (refer to C in FIG. 1) / the width of the roll-shaped grindstone main body 10 (refer to D in FIG. 1) × 100%. The If the ratio of the roll-shaped elastic body 20 in the roll-shaped grindstone main body 10 is too small, a sufficient buffering effect cannot be obtained. On the other hand, if the ratio of the roll-shaped elastic body 20 in the roll-shaped grindstone main body 10 is too large, the polishing life of the buffer grindstone 100 is shortened.

  According to the buffer grindstone 100 described above, the hardness of the roll-shaped elastic body 20 is preferably Shore hardness (Shore A) 15 to 35, more preferably 20, but of course not limited thereto. . The preferable hardness range of the roll-shaped elastic body 20 is determined based on the number of scratches (or the degree of non-uniform polishing) generated in the object polished by the buffer grindstone.

(Method for manufacturing buffer wheel)
The manufacturing method of the buffer grindstone 100 according to the embodiment of the present invention includes: (a) cutting one side of the roll-shaped grindstone main body 10 to form an annular groove, and setting the depth of the annular groove to half that of the roll-shaped grindstone main body 10. Less than or equal to half the thickness, (b) a step of curing the elastic body after injecting a liquid elastic body into the annular groove, and (c) the roll-shaped grindstone body 10 Cutting the other side to correspond to the annular groove and injecting a liquid elastic body, then curing the elastic body and communicating the elastic bodies on both sides to form the roll-shaped elastic body 20.

  The grindstone used by the above-mentioned method is not specifically limited, Of course, you may use the conventional grindstone.

  According to the method for manufacturing the buffer grindstone 100 described above, in step (a), one side of the roll-shaped grindstone is cut to form the annular groove, and the cutting position is the inner diameter of the annular groove and the roll-shaped grindstone main body 10. The ratio to the inner diameter is preferably 1 to 1.8, more preferably 1.5. In the present invention, the “ratio” is calculated by the diameter of the inner edge of the annular groove / the diameter of the inner edge of the roll-shaped grindstone body 10. The ratio of the annular groove portion in the roll-shaped grindstone main body 10 is preferably about 1 to 50%, more preferably 5 to 40%. In the present invention, the “ratio” is calculated by (annular groove / width of roll-shaped grindstone body 10) × 100%.

  According to the method for manufacturing the buffer grindstone 100 described above, one side of the grindstone is cut to form an annular groove, and a liquid elastic body solution is injected into the annular groove. Therefore, it is preferable that the depth is half the thickness of the roll-shaped grindstone main body 10, but it is not limited to this. However, if the depth is too large, the roll-shaped grindstone main body 10 may collapse.

(The method of polishing the roller with a buffer stone)
A buffer stone 100 according to an embodiment of the present invention is used to polish a roller.

  The roller described above may be a roller used in various applications, but is preferably a roller used when producing an electrolytic copper foil. In the manufacturing process of the electrolytic copper foil, the copper raw material is dissolved in the electrolysis apparatus (that is, in the electrolytic bath), electrolysis is performed at a high density current, the copper component in the electrolytic plating solution is deposited, and the surface of the large rotating roller ( Manufactured by adhering to the cathode). When the roller rotates, the thickness of the copper foil adhering increases, and reaches a predetermined thickness and is wound around the roller shaft to complete the product. During the electrolytic plating process, an oxidation phenomenon occurs due to electrolytic corrosion or the like on the surface of the cathode roller to form an oxide layer. This oxide layer (generally titanium oxide) is made of a non-conductive substance. Due to this substance, the crystal structure of the produced copper foil is loosened, and in the worst case, uneven oxidation spots are generated on the surface of the copper foil, which may adversely affect the internal properties and appearance quality of the copper foil. Therefore, the surface roughness necessary for the copper foil with excellent productivity is recovered and the cathode roller can be used again when the buffer grindstone 100 of the present invention is polished again to remove the oxide layer on the surface. It becomes like this.

  The roller described above may be made of a titanium alloy, lead, and stainless steel material, but is not limited to these materials, and is preferably applied to a printed circuit board or a copper foil manufacturing apparatus for a lithium battery. It is not limited to.

  Hereinafter, examples of the present invention will be described in detail. However, these examples are merely illustrative examples, and the scope of the present invention is not intended to be limited thereto.

(First embodiment)
Refer to Table 1. As shown in Table 1, a commercially available grindstone (model PBW1-8 manufactured by NIPPON TEKEN ENGINE Co., Ltd.) is taken out and a tungsten steel forming blade having a width of 4.5 mm is used. A groove of 4.5 mm is formed by turning at 50 rpm with a lathe at a position separated from the center of the inner diameter of the elastic body in Table 1, and the depth is controlled within half (25 mm) of the depth of the grindstone. ) (Sealant 45 manufactured by Shin-Etsu Chemical Co., Ltd.) is poured into the groove and scraped with a scraper, left at 25 ° C. for 72 hours to cure the silicone, and then the groove is similarly produced on the opposite side and silicon is injected. And let the silicone on both sides communicate. The electroplating roller is suspended in the polishing area, the rotation speed is set to 1 rpm, water is appropriately sprayed on the surface, and then the grinding wheel is placed on the rotating device, and the surface of the grinding stone is brought close to the surface of the electroplating roller. Then, the pressure is set to 1.0 kg / cm ² , the rotation speed is set to 400 rpm, and polishing is performed while moving in the lateral direction at a speed of 50 mm / min. The total polishing time is 60 minutes, and the state of scratches on the roller surface is observed. In the present invention, the “number of scratches” refers to a pattern generated by uneven polishing.

  The shock-absorbing stone of the present invention has a very small number of scratches generated on the rollers as compared with the conventional grinding stone of the comparative example.

  As can be seen from the above, the buffer wheel, the method of manufacturing the buffer wheel, and the use of the buffer wheel according to the present invention are such that when a roller is polished by a conventional wheel, scratches are generated on the roller to be polished due to vibration of the external environment. It is possible to prevent the occurrence, increase the efficiency and quality of the polishing operation, and improve the problems and drawbacks of the conventional structure.

  While the preferred embodiments of the present invention have been disclosed above, as may be appreciated by those skilled in the art, they are not intended to limit the invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the claims of the present invention should be construed broadly including such changes and modifications.

DESCRIPTION OF SYMBOLS 10 Roll-shaped grindstone main body 20 Roll-shaped elastic body 30 Hollow annular washer 100 Buffer grindstone A Inner diameter B of roll-shaped elastic body C Inner diameter of roll-shaped grindstone body D Width of roll-shaped elastic body D Width of roll-shaped grindstone main body

Claims (10)

A shock-absorbing whetstone equipped with a hollow annular washer and a roll-shaped whetstone body,
The roll-shaped grindstone main body is formed outside the hollow annular washer and has a roll-shaped elastic body inside.   The buffer grindstone according to claim 1, wherein a ratio of an inner diameter of the roll-shaped elastic body to an inner diameter of the roll-shaped grindstone main body is 1 to 1.8.   The buffer grindstone according to claim 2, wherein a ratio of an inner diameter of the roll-shaped elastic body to an inner diameter of the roll-shaped grindstone main body is 1.5.   The buffer grindstone according to any one of claims 1 to 3, wherein a ratio of the roll-shaped elastic body in the roll-shaped grindstone main body is 1 to 50%.   The buffer grindstone according to any one of claims 1 to 4, wherein a ratio of the roll-shaped elastic body in the roll-shaped grindstone main body is 5 to 40%.   The buffer grindstone according to any one of claims 1 to 5, wherein the roll-shaped elastic body has a Shore hardness of 15 to 35.   The shock-absorbing stone according to claim 6, wherein the roll-shaped elastic body has a Shore hardness of 20.   The shock-absorbing stone according to any one of claims 1 to 7, wherein the roll-shaped elastic body is made of silicone, polyurethane, EVA, and / or rubber. It is a manufacturing method of the buffer grindstone of Claim 1,
(A) cutting one side of the roll-shaped grindstone main body to form an annular groove, and forming the depth of the annular groove smaller than or equal to half the thickness of the roll-shaped grindstone main body When,
(B) after injecting a liquid elastic body into the annular groove, curing the elastic body;
(C) cutting the other side of the roll-shaped grindstone main body so as to correspond to the annular groove portion, injecting the liquid elastic body, then curing the elastic body and communicating the elastic bodies on both sides; The manufacturing method including.   The buffer stone according to any one of claims 1 to 8, for use in polishing a roller.

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