KR101506816B1 - Dual friction surface mold molding method - Google Patents

Abstract

The present invention relates to a method for molding a dual friction surface mold, and more specifically, to a method for molding a dual friction surface mold, which can be semipermanently used by not slipping on the surface of rubber of a rubber fabric sheet material which is bonded with a rubber sheet and a grey fabric or processed paper to give frictional force to a transfer process of a fabric when weaving, and molds patterns in an uneven form having different particle size to molded grooves of a dual structure applied to a molded surface and makes the mold of a rubber roller cover ring needed for molding by metal to prevent initial slip problems and maintain functions even if abrasion occurs.

Description

[0001] The present invention relates to a dual friction surface mold molding method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a double friction surface mold of a rubber roller cover for a weaving machine, In order to prevent the slip on the rubber surface of water and to prevent the initial slip problem and to maintain the function even when the wear progresses, it is molded into a molding groove of double structure applied to the molding surface with different grain sizes. And more particularly, to a double friction surface mold forming method which can semi-permanently use a mold of a rubber roller covering as a metal.

Generally, conventionally, a molding drum (Practical Production No. 101794) of a rubber tape uneven surface forming machine for a loom, which is a method of bonding a fine stone by forming a phenolic resin adhesive layer on a forming drum, is used, and a sandpaper tape is formed into a silicone rubber tape A method of forming a rubber tape for a friction roller of a loom, which is a method of molding a rubber tape having the same shape as a fine stone, is disclosed (Patent No. 0337429).

A forming drum of a rubber tape uneven surface forming machine (Practical Production No. 101794), which is a method for bonding a fine stone by forming a phenol resin adhesive layer on a conventional forming drum, It is useful in that it can be used for a long time without lowering the frictional force even when the abrasion proceeds. However, in the rotary curing method, the surface of the fine-grained phenolic adhesive layer is smooth, so that sliding contact is inevitable until a certain abrasion occurs at the abutting portion of the molded article, which is a problem in terms of function and causes unreasonable pressurization in order to achieve the corresponding molding surface of the micro- The micropores are removed. Also, in the winter when the temperature difference is severe during operation, natural cracking of the phenolic adhesive layer occurs easily and periodic repair is inevitable due to partial separation of the micropores and the adhesive layer.

Another method is a method of molding a rubber tape for a friction roller of a loom, which is a method of molding a sandpaper tape into a silicone rubber tape to form a rubber tape having the same shape as a microstructure (Patent No. 0337429) The sandpaper tape for abrasion is heated and pressurized, and then the rubber cloth tape having the physical properties lower than the hardness of the silicone rubber is incorporated into the silicone rubber tape having the molding surface corresponding to the shape of the fine stone, Thereby forming a rubber tape of the same shape. Since this method solves the initial slip problem, it is inevitable to produce a new silicone rubber raw paper tape mold due to the improved molding method or cracking due to the hardening of the surface of the silicon mold during repetitive vulcanizing operation. In particular, There is a disadvantage in that it takes a lot of cost because it is required to manufacture the molded product in excess of the length of the required molded product to be pressed.

Korean Registered Utility Model Registration No. 101794 Korean Registered Patent Publication No. 0337429

SUMMARY OF THE INVENTION It is an object of the present invention, which has been devised to solve the problems as described above, to provide a rubber sheet for preventing frictional force on a rubber surface of a rubber sheet, In order to prevent the initial slip problem and to maintain the function even when the wear progresses, the mold of the rubber roller covering which is necessary for the molding is formed into a molding groove of a double structure, To thereby provide a double friction surface mold forming method which can be used semi-permanently.

According to an aspect of the present invention, there is provided a method for forming a double friction surface mold comprising the steps of: (a) applying a phenolic or acrylic adhesive to a metal sheet and bonding the microstructure to the metal sheet; (b) a thermoplastic resin or an elastomeric rubber material in a sheet state through a compression roller is covered on the upper surface of the micropores adhered to the metal sheet, and the thermoplastic resin or the elastomeric rubber material, which is passed through the rotocure, A first model body fabricating step of fabricating a first model body so as to form a groove corresponding to the shape; (c) Manufacturing a second model body by applying an acrylic or epoxy adhesive to a flat surface excluding the grooves on one side of the first model body and attaching a crushed thermoplastic resin or an elastomeric rubber material to the second model body step; (d) applying a silicone release agent to the outer peripheral surface of the second model body to form a release film, wrapping and fixing the crushed thermoplastic resin or the elastomer rubber material on the outer peripheral surface of the inner mold so as to face the inner peripheral surface of the outer mold, A mortar injection step of injecting mortar between the model body and the outer mold; (e) solidifying the mortar, separating the second model body from the outer mold and the inner mold, and fabricating a third model body made of solidified mortar; (f) a cooling step of fixing the third model body to the inner peripheral surface of the outer mold, and injecting a metal melt between the third model body and the inner mold to cool the metal melt; And (g) separating the cooled molten metal from the third model body, the outer mold, and the inner mold to produce an end product made only of metal.

The cooling step may include rotating the metal mold so that the molten metal is uniformly injected into the groove formed on one side of the third model body when the metal melt is injected or injected between the third model body and the outer mold, .

As described above, according to the present invention, grooves and protrusions are repeatedly formed through a material having a different particle size without having a flat surface on the outer circumferential surface of the finished product, thereby forming an excellent friction surface, preventing the initial slip problem of rubber roller covering, The present invention provides a double friction surface mold forming method capable of reducing the amount of moldings to be heated and pressed and molding the semi-permanent molds integrally, thereby reducing cost and increasing efficiency at the production site .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a step of adhering a fine stone of a double friction surface mold forming method according to a preferred embodiment of the present invention. FIG.
FIG. 2 and FIG. 3 are views showing steps of manufacturing a first model of a double friction surface mold forming method according to a preferred embodiment of the present invention.
4 is a view showing a first model body of a double friction surface mold forming method according to a preferred embodiment of the present invention.
FIG. 5 is a view showing a step of manufacturing a second model of a double friction surface mold forming method according to a preferred embodiment of the present invention.
6 is a view showing a step of injecting mortar of the double friction surface mold forming method according to a preferred embodiment of the present invention.
7 is a view showing a third model body of a double friction surface mold forming method according to a preferred embodiment of the present invention.
FIG. 8 is a view showing a cooling step and a final product manufacturing step of a double friction surface mold forming method according to a preferred embodiment of the present invention.
9 is a view showing an end product of a double friction surface mold forming method according to a preferred embodiment of the present invention.
FIG. 10 is a perspective view of an end product of a double friction surface mold forming method according to a preferred embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a double friction surface mold forming method according to embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a step of adhering a fine stone of a double friction surface mold forming method according to a preferred embodiment of the present invention. FIG. FIG. 2 and FIG. 3 are views showing steps of manufacturing a first model of a double friction surface mold forming method according to a preferred embodiment of the present invention. 4 is a view showing a first model body of a double friction surface mold forming method according to a preferred embodiment of the present invention. FIG. 5 is a view showing a step of manufacturing a second model of a double friction surface mold forming method according to a preferred embodiment of the present invention. 6 is a view showing a step of injecting mortar of the double friction surface mold forming method according to a preferred embodiment of the present invention. 7 is a view showing a third model body of a double friction surface mold forming method according to a preferred embodiment of the present invention. FIG. 8 is a view showing a cooling step and a final product manufacturing step of a double friction surface mold forming method according to a preferred embodiment of the present invention. 9 is a view showing an end product of a double friction surface mold forming method according to a preferred embodiment of the present invention.

Referring to FIGS. 1 to 9, a double friction surface mold forming method according to the present invention includes a step of bonding a fine stone, a first model body manufacturing step, a second model body manufacturing step, a mortar injection step, , A cooling step and an article production step.

First, in the micro-stone adhesion step, a phenol-based or acrylic adhesive is applied to the metallic iron plate 12, and the micro-stone 2 is bonded.

In addition, the size of the fine stone 2 is preferably an aluminum oxide having a particle size of 0.8 to 1.2 mm.

In the first modeling step, the thermoplastic resin or the elastomeric rubber material 3 in the uncrosslinked state in the form of an unvulcanized sheet is pressed on the upper surface of the micropores 2 bonded to the metallic steel plate 12 through a pressing roller, ). As a result, a groove corresponding to the shape of the micropores 2 vulcanized on one side of the thermoplastic resin or the elastomeric rubber material 3 in the unvulcanized state through the pressing roller is formed.

That is, the first model body is formed by covering an upper portion of an unsealed sheet (a thermoplastic resin or an elastomeric rubber material) with an upper portion of the isosceles, passing through a rotocure and vulcanizing the same, . Therefore, the first model body is in the form of a sheet in which a thermosetting resin or an elastomeric rubber material is vulcanized, and a groove corresponding to the microstructure is formed on one side.

Here, the thermoplastic resin or the elastomeric rubber material (3) in the uncrosslinked sheet state has an average melting point of 130 to 180 占 폚.

Since the rotocure is a well known technique for forming patterns by applying heat and pressure, a detailed description thereof will be omitted.

In the second model body manufacturing step, acrylic or epoxy adhesive is applied to the flat surface 5 excluding the grooves on one side of the first model body 4, and the crushed thermoplastic resin or the elastomeric rubber material 6 is attached The second model body 7 is manufactured.

Here, the flat surface 5 of the first model body 4 is a surface formed by the size of the microstructure 2 attached to the metal plate 12 for manufacturing the first model body 4. 3, the thermoplastic resin or the elastomeric rubber material 3 in the unvulcanized state is filled between the fine stones 2 while passing through the rotocure, as shown in Fig. 3, because the fine stones 2 have a certain size In addition, there occurs a portion between the fine stones 2 that is in contact with the side surface of the metal plate 12 through the gap. At this time, the flat surface 5 is formed by the side surface of the metal plate 12. That is, the flat surface 5 is also the surface of the fine stones 2 not attached to the metal plate 12. [ On the other hand, in the conventional art, since the rubber roller is manufactured at the end of the second model making step, the slip phenomenon occurs due to the flat surface 5 formed as described above. In other words, the second model body manufacturing step is a step for further manufacturing protrusions protruding on the flat surface 5 where slip phenomenon can occur.

The size of the crushed thermoplastic resin or the elastomeric rubber material 6 adhered to the flat surface 5 of the outer peripheral surface of the first model body 4 in the second model body fabrication step is set so that, Is smaller than the size of the microspheres (2) adhering to the substrate (12).

Here, the crushed thermoplastic resin or elastomeric rubber material 6 has a shape similar to that of the fine stone 2, but has a particle size of 0.6 mm or less and an average warpage of 68 or more in accordance with JIS K 6253.

Preferably, when the crushed thermoplastic resin or the elastomeric rubber material 6 is adhered, the crushed thermoplastic resin or the elastomeric rubber material 6 is dispersed and adhered with 18 to 20 particles per square centimeter.

Then, the second model body 7 to which the crushed thermoplastic resin or the elastomeric rubber material 6 is adhered is dried at room temperature for 24 hours or more.

In the mortar injection step, a silicone release agent is applied to the outer peripheral surface of the second model body 7 to form a release film, and the crushed thermoplastic resin or elastomeric rubber material 6 faces the inner peripheral surface of the outer mold 1a 1b, and then mortar is injected between the second model body 7 and the outer mold 1a.

At this time, it is preferable that the release film is formed by diluting a nonionic silicone release agent obtained by emulsifying polydimethyl siloxane oil with water at a ratio of 1: 1.

In the third modeling step, the mortar 8 is solidified and then the solidified mortar 8 is separated from the outer mold 1a and the inner mold 1b to form the solidified mortar 8 ) Is manufactured.

Mortar (8) is a special cement liquid light-weight defoamer with uniform foam and dispersibility of 1: 2.5 of white cement and washed marine (0.15 mm main particle less than 0.3 mm) at 3 to 5% Mixing is preferred.

The cooling step is a step of fixing the third model body 9 to the inner peripheral surface of the outer mold 1a and injecting the metal melt 10 between the third model body 9 and the inner mold 1b, .

At this time, in the cooling step, the metal melt 10 is injected into the groove formed in the inner peripheral surface of the third model body 9, either when the metal melt 10 is injected into the third model body 9 or after the injection, It is preferable to rotate the rotary shaft 1.

This is because when the metal melt 10 is simply injected into the third model body 9, even if the metal melt 10 is injected into the groove formed in the third model body 9, And the metal melt 10 is cooled in the state where the air hole is generated due to the air not falling out of the notched grooves. That is, when the finished product 11 is manufactured through the cooling step in the state where the air hole is generated as described above, the speed at which the upper part of the finished product 11 is worn more than the lower part progresses rapidly, The finished product 11 is not uniformly densified and the wear is made faster and broken, so that the upper and lower or right and left balances of the outer circumferential surface of the finished product 11 are not constant, and a slim phenomenon occurs.

Therefore, in the cooling step, when the metal melt 10 is injected into the inside of the third model body 9 or after the outer mold 1a and the inner mold 1b are rotated after the injection, the inertial force The third model body 9 located at the upper and lower portions has a uniform density at every portion of the groove and is filled with no empty space without an air hole. Thereby, the metal melt (10) is filled in the grooves of the third model body (9) with the uniform density of the upper and lower parts and there is no air hole, so that the protrusion which is the same as the groove of the third model body The finished product 11 can be manufactured.

FIG. 10 is a perspective view of an end product of a double friction surface mold forming method according to a preferred embodiment of the present invention. FIG.

Referring to FIG. 10, in the final product manufacturing step, the cooled molten metal is separated from the third model body 9, the outer mold 1a, and the inner mold 1b to produce the finished product 11 made of only metal.

That is, in the method of forming a double friction surface mold according to the present invention, in order to impart a frictional force to the process of transferring the fabric during weaving, the rubber sheet is prevented from sliding on the rubber surface of the rubber sheet, In order to prevent the problem and to maintain the function even when the wear is progressed, it is used semi-permanently by molding the mold of the double roller structure covered with the rubber roller covering, .

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

1a: outer mold
1b: Inner mold
2: Fine stone
3: thermoplastic resin or elastomeric rubber material in an uncured state through a compression roller
4: First model body
5: Flat surface
6: crushed thermoplastic resin or elastomeric rubber material
7: Second model body
8: Mortar
9: Third model body
10: Metal melt
11: Finished product
12: metal plate

Claims (2)

(a) a micro-stone bonding step of applying a phenol-based or acrylic adhesive to a metal sheet and bonding the micro-stones;
(b) a thermoplastic resin or an elastomeric rubber material in an unvulcanized state through a compression roller is covered on the top of the micropores adhered to the metal sheet, and the thermoplastic resin or the elastomeric rubber material is passed through a rotocure, A first model body fabricating step of fabricating a first model body so as to form a groove corresponding to the shape of the microstructure;
(c) Manufacturing a second model body by applying an acrylic or epoxy adhesive to a flat surface excluding the grooves on one side of the first model body and attaching a crushed thermoplastic resin or an elastomeric rubber material to the second model body step;
(d) applying a silicone release agent to the outer peripheral surface of the second model body to form a release film, wrapping and fixing the crushed thermoplastic resin or the elastomer rubber material on the outer peripheral surface of the inner mold so as to face the inner peripheral surface of the outer mold, A mortar injection step of injecting mortar between the model body and the outer mold;
(e) solidifying the mortar, separating the second model body from the outer mold and the inner mold, and fabricating a third model body made of solidified mortar;
(f) a cooling step of fixing the third model body to the inner peripheral surface of the outer mold, and injecting a metal melt between the third model body and the inner mold to cool the metal melt; And
(g) separating the cooled molten metal from the third model body, the outer mold, and the inner mold to produce an end product made of metal only.
2. The method according to claim 1,
Wherein the mold is rotated so that the metal melt is uniformly injected into the groove formed on one side surface of the third model body when the metal melt is injected or injected between the third model body and the outer mold, Mold molding method.

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