JP2012157934A - Method of manufacturing sandpaper, and sandpaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing sandpaper which is uniform in the sticking of abrasive grains and hardly falls off, and the sandpaper.SOLUTION: A sheet raw material 11 is formed by sticking a net raw material 12 on it. The net raw material is formed of at least one kind of paper, cloth, resin, nonwoven fabric or a metallic raw material. The sheet raw material and the net raw material are formed by applying an adhesive. In the sheet raw material and the net raw material, high static electricity is applied on the abrasive grains 14 when passing through on a storage part for storing the abrasive grains in a lower part. The abrasive grains in the storage part fly up by being applied with high static electricity. The abrasive grains flowing up by the high static electricity sticks so as to cover an upper surface of the sheet raw material and the net raw material.

Description

  The present invention relates to a sandpaper preparation method and sandpaper in which abrasive grains are evenly attached and hardly fall off.

  A workpiece processing tool described in JP-A-2002-66936 performs processing such as grinding, polishing, and deburring of a workpiece, and includes a first processing tool provided in a shank, and the first processing. A second processing tool that can be attached to and detached from the tool, and selectively processing the workpiece, such as grinding, polishing, and deburring, by selectively using the first processing tool and the second processing tool. it can. In addition, many processing apparatuses that perform grinding, polishing, deburring, and the like of workpieces have sandpaper attached.

JP 2002-66936 A

  Conventionally, a brush bristle material that performs processing such as grinding, polishing, deburring, etc. on a workpiece has powders such as abrasive grains mixed in the synthetic resin brush bristle material. In the sandpaper, abrasive grains are uniformly attached on a sheet material. However, when the workpiece is ground, polished, deburred or the like, the bristle or sandpaper often hits almost the same place on the workpiece at any time. As a result, the brush bristles or sandpaper often cannot be used as brush bristles or sandpaper even if the abrasive grains fall off in a part of the same place and the abrasive grains remain in other parts.

  Since the abrasive grains adhering to the brush bristles or sandpaper are usually attached to a uniform thickness, if a part peeled off is formed, it often does not function as the bristles or sandpaper.

  In order to solve the problems as described above, the present invention is to laminate a net material on a sheet material, and to form abrasive grains on the surface or both surfaces of the sheet material and the net material, and also in the adhesive. An object of the present invention is to provide a sandpaper preparation method and a sandpaper that can be used. In addition, the present invention provides a sandpaper manufacturing method and a sandpaper that can attach abrasive grains to both the sheet material and the net material in a strong and thick manner by forming the sheet material into a net shape or a woven shape. With the goal.

(First invention)
The sandpaper production method of the first invention is a paper, cloth, synthetic resin, non-woven fabric, or a sheet material made of at least one of paper, cloth, synthetic resin, rubber material, non-woven fabric, sponge, cork, and metal, or A step of bonding a net material made of at least one kind of metal material, a step of applying an adhesive to the sheet material and the net material, a step of applying high static electricity to an accommodating portion containing abrasive grains, and the accommodation The method comprises at least a step of causing the abrasive grains housed in the section to float by application of the high static electricity and depositing the abrasive grains on the sheet material and the net material.

(Second invention)
The sheet material in the sandpaper manufacturing method of the second invention is characterized in that at least one kind of the members is knitted.

(Third invention)
The sandpaper production method of the third invention is characterized in that perforations for cutting are put in the sheet material and the net material to which the abrasive grains are attached.

(Fourth invention)
The abrasive grains in the sandpaper production method of the fourth invention are at least one kind consisting of diamond, ceramics, alumina, silicon, zirconia, zirconium, glass, emery, cerium oxide, boron nitride (CBN), and green carbon (GC). The net material and the sheet material are attached so as to cover the entire surface.

(Fifth invention)
The net material in the sandpaper manufacturing method of the fifth invention is characterized in that at least one line is knitted or woven.

(Sixth invention)
The sandpaper of the sixth invention is made of paper, cloth, resin, nonwoven fabric, or metal material on a sheet material consisting of at least one of paper, cloth, synthetic resin, rubber material, nonwoven fabric, sponge, cork, and metal. A base material on which at least one type of net material is bonded together, an adhesive applied on the base material, and when high static electricity is applied, the soared abrasive grains cover the sheet material and net material It is at least comprised from the abrasive grain layer adhering to.

(Seventh invention)
In the sandpaper of the seventh invention, the substrate on which the abrasive layer is adhered by an adhesive is wound in a roll shape.

(Eighth invention)
In the sandpaper of the eighth invention, the base material is characterized in that the abrasive layer is provided on both surfaces by an adhesive.

(9th invention)
In the sandpaper of the ninth invention, the net material is provided so as to be inclined with respect to the sheet material.

(10th invention)
The sandpaper of the tenth invention is characterized in that the substrate on which the abrasive layer is adhered by an adhesive is cut into a strip shape or a plurality of cuts into a sheet shape.

(11th invention)
The sandpaper according to the eleventh aspect of the invention is characterized in that the base material to which the abrasive layer is adhered by an adhesive is rounded and formed into a rod shape.

(Twelfth invention)
The sandpaper according to a twelfth aspect of the present invention is characterized in that a plurality of the substrates on which the abrasive layer is adhered with an adhesive are rounded and integrally formed.

(13th invention)
In the sandpaper of the thirteenth aspect of the invention, the net material made of the metal material has a cross-section made of a circle, an ellipse, and a polygon.

  According to the present invention, high static electricity can be applied to the abrasive grains, and the abrasive grains can be mixed into the sheet material and / or the net material, so that a sandpaper with a long life can be obtained.

  According to the present invention, the abrasive grains are adhered not only to the surface of the sheet material and the net material and the mesh by the adhesive, but also between the sheet material and the net material and between the materials themselves. be able to.

  According to the present invention, a sandpaper having a high quality and a long life can be obtained by selecting the type of the sheet material and the net material and combining the materials.

  According to the present invention, since the perforation is provided in the sandpaper, if it is wound in a roll shape, it can be easily cut into a required size and used when necessary.

  According to the present invention, it is possible to easily obtain a non-sheet-like shape such as a strip-like shape obtained by cutting sandpaper into a predetermined width, a rounded rod-like shape, a shape obtained by rounding and bundling plural pieces.

  According to the present invention, it is possible to coat more abrasive grains to be adhered to a flat surface by reducing the mesh of the net material.

  According to the present invention, abrasive grains having different particle diameters can be mixed and applied to one surface or both surfaces of a sheet material and / or a net material by applying a high voltage.

  According to the present invention, it is possible to change the polishing force or how to hit the workpiece by making the net material oblique to the sheet material. The sheet material and / or the net material can have one surface at a right angle and the other surface at an angle.

(A) to (C) is a first embodiment of the present invention, and is a schematic view for explaining a state in which a net material is attached to a sheet material and abrasive grains are adhered between them. Example 1 (A) to (c) is a method for producing the sandpaper of the present invention, and is a schematic diagram for explaining a state in which high static electricity is applied to the abrasive grains and the abrasive grains are adhered to the sheet material and the net material. It is. (A)-(c) is a figure explaining the example which cut | disconnects the sandpaper of this invention and produces various products. (A) to (d) are the second embodiment of the present invention, and are diagrams for explaining a state in which a sandpaper is produced by attaching a wire net to a sheet material and applying high static electricity. (Example 2) (A)-(f) is a figure for demonstrating the sandpaper which attached the metal mesh to both surfaces of the sheet | seat raw material in 3rd Example of this invention. (Example 3)

(First invention)
The sandpaper production method of the first invention comprises at least a step of bonding a net material on a sheet material, an adhesive application step, a step of applying high static electricity, and a step of attaching abrasive grains. The sandpaper with the abrasive grains firmly attached to the upper and side portions of the net material and the upper portion of the sheet material can be obtained. The sheet material has such a thickness that at least one of paper, cloth, synthetic resin, rubber material, nonwoven fabric, sponge, cork, and metal can be wound in a roll shape.

  The sheet material has a net material bonded thereon. The net material is made of at least one of paper, cloth, synthetic resin, non-woven fabric, or metal material. For example, the sheet material and the net material wound in advance are formed into a sheet shape and an adhesive is applied thereto. For example, when the sheet material and the net material pass over a storage portion in which abrasive grains are placed in the lower part, high static electricity is applied to the abrasive grains. Abrasive grains accommodated in the accommodating portion rise when the high static electricity is applied.

  The abrasive particles soared by the high static electricity adhere to cover the sheet material and the net material. Further, when the abrasive particles soar with static electricity, the direction becomes substantially constant and uniformly adheres to the sheet material and the net material. Further, the abrasive grains are formed in every corner as if they were coated over the mesh portion in order to strongly adhere to the sheet material and the mesh material using electrostatic force. When the adhesive is applied thickly, the abrasive particles soared by the high static electricity adhere to the inside and the surface of the sheet material and the net material. The sandpaper produced in this way can use the portion of the abrasive grains that have entered (bite into) the sheet material and the net material due to the application of high static electricity even when the abrasive grains on the surface are worn. it can.

(Second invention)
In the sandpaper manufacturing method according to the second aspect of the invention, the sheet material is formed into a planar body by knitting a material composed of at least one or more types of linear bodies instead of a single sheet-like surface material. It is. For example, paper, cloth, or fibrous synthetic resin is formed into a linear body and then knitted to form a sheet material. In the knitted sheet material, abrasive grains enter between the respective stitches, and the life of the sandpaper can be extended.

(Third invention)
In the sandpaper manufacturing method of the third invention, a perforation for cutting is provided in the sheet material and the net material to which the abrasive grains are attached so that the finished sandpaper can be easily cut into a predetermined size. The perforation can easily cut the sandpaper by hand into a desired size without using a cutting tool such as scissors. The direction of the perforation, for example, the vertical direction or the horizontal direction, or the number of the perforations is provided at an arbitrary place as necessary.

(Fourth invention)
The abrasive grains to be adhered to the sandpaper of the fourth invention are at least one kind consisting of diamond, ceramics, alumina, silicon, zirconia, zirconium, glass, emery, cerium oxide, boron nitride (CBN), and green carbon (GC). . The abrasive grains cover the entire surface of the net material and the sheet material, and are adhered over the intersecting portions or narrow corner portions of the materials.

(Fifth invention)
The net material according to the fifth aspect of the invention is one in which a single line or a plurality of lines are knitted, or a plurality of lines that are woven. In particular, in a net material in which a plurality of lines are knitted or curled, the abrasive grains are easily adhered between the sheet material and the net material, and between the net material and the net material.

(Sixth invention)
The sandpaper of the sixth invention comprises a base material in which a net material is bonded onto a sheet material, an adhesive applied on the base material, and an abrasive layer attached to the sheet material and the net material. At least composed. The sheet material is, for example, at least one of paper, cloth, synthetic resin, rubber material, non-woven fabric, sponge, cork, and metal, and has a paper shape. The net material is, for example, at least one of paper, cloth, resin, nonwoven fabric, or metal material. The base material has a sheet shape in which the mesh material is bonded onto the sheet material.

  The base material has an adhesive applied thereon. Abrasive grains rise by application of high static electricity, for example, 60,000 volts DC. The soared abrasive grains are attached to the sheet material and the net material to form an abrasive layer. The abrasive layer not only covers the entire surface of the sheet material and the net material, but also penetrates into the stitches and not only maintains the quality as a sandpaper for a long time but also can maintain a long life.

(Seventh invention)
In the sandpaper of the seventh invention, the substrate is wound in a roll shape. Since the substrate to which the abrasive layer is adhered by an adhesive is wound in a roll shape, it can be used after being cut into a required length and / or size.

(Eighth invention)
In the sandpaper of the eighth invention, the abrasive grain layer is provided on both sides of the base material with an adhesive. The base material is provided such that a net material is provided on both sides, and the abrasive layer enters the base material and the net material. Since the sandpaper is provided with an abrasive layer on both sides, the life of the sandpaper can be extended.

(9th invention)
The sandpaper of the ninth invention is provided such that the net material is inclined with respect to the sheet material. By providing the net material at a right angle or an inclined angle with respect to the sheet material, it is possible to change the polishing force or the way to hit the workpiece.

(10th invention)
The sandpaper of the tenth invention can be used by cutting the base material on which the abrasive layer is adhered with an adhesive into a strip shape or a sheet shape having a plurality of cuts. The strip sandpaper can be used in a substantially rod shape with a narrow width. In addition, the sandpaper can be used in a rectangular shape by slightly widening the width of the strip. Furthermore, the sandpaper can be used in the form of a sheet with a plurality of cuts.

(11th invention)
The sandpaper of the eleventh aspect of the invention can be formed into a rod shape by cutting the base material on which the abrasive grain layer is adhered with an adhesive into a strip shape (rectangular shape). As for the said rectangular-shaped base material, a round bar brush from which thickness differs is obtained by changing a width arbitrarily as needed.

(Twelfth invention)
The sandpaper according to the twelfth aspect of the present invention can be used by integrally molding a plurality of rounded base materials to which the abrasive layer is attached with an adhesive. The round bar brush can include a core as necessary, and can also be a brush in which a plurality are gathered.

(13th invention)
In the sandpaper of the thirteenth invention, the net material is made of a metal material. The cross section of the metal material may be a circle, an ellipse, or a polygon. Even when the abrasive grain layer is worn out, the metal net material made of polygons can be polished even in this portion even if the abrasive grain layer is worn.

  FIGS. 1 (a) to (c) show a first embodiment of the present invention, which is a schematic diagram for explaining a state in which a net material is attached to a sheet material and abrasive grains are adhered between them. is there. 1 (a) to 1 (c) show a first embodiment of the present invention, in which a sheet material 11 includes a net material 12, such as paper, cloth, synthetic resin, rubber material, nonwoven fabric, sponge, cork, or metal. One type is attached integrally. The net material 12 is provided with the paper, cloth, synthetic resin, rubber material, non-woven fabric, sponge, cork, or metal in a net shape.

  The sheet material 11 is, for example, thin and plate-like that can be wound into a roll. Further, the sheet material 11 can be made by knitting at least one kind of the members. The knitted sheet material 11 can adhere the abrasive grains 14 to the mesh, and can extend the life of the sandpaper.

  The sheet material 11 can be knitted as a single wire or a plurality of types as a single wire or a stranded wire. The net material 12 attached to the sheet material 11 can be a single wire or a twisted wire. In particular, the sheet material made of paper can be made into the net material 12 after rolling the sheet-like paper, twisting it, and then turning it into a single material. Further, the paper material is made as a sheet material 11 or a net material 12 after tearing, cutting or tearing the paper into small pieces, putting a small amount of adhesive into a desired thickness, and then making it.

  The net material 12 is, for example, at least one of paper, cloth, resin, non-woven fabric, or metal material in a net shape. The net material 12 is attached to the sheet material 11 with an adhesive or the like. The sandpaper of the present invention is then attached with abrasive grains 14 by the method shown in FIG. The abrasive grains 14 can be attached in a state of being coated on the surface of the sheet material 11 and the upper part of the net material 12 or between them.

  FIGS. 2 (a) to (c) are methods for producing the sandpaper of the present invention, for explaining a state in which high static electricity is applied to the abrasive grains and the abrasive grains are adhered to the sheet material and the net material. FIG. In FIG. 2 (a), a base 21 is provided with a first spacer 22, a second spacer 23, and a third spacer 24 at predetermined intervals as shown in at least three places. The sheet material 11 and the net material 12 are each integrally attached and wound in advance to form a roll-shaped member 28.

  The roll-shaped member 28 is drawn, for example, with the net material 12 facing downward, and passes over the first spacer 22, the second spacer 23, and the third spacer 24. A storage chamber for storing the abrasive grains 14 is formed between the second spacer 23 and the third spacer 24. The storage chamber is provided with electrode plates or electrode rods 25 and 26 for applying high static electricity vertically. On the other hand, an applicator 27 for applying an adhesive is provided below the sheet material 11 and the net material 12. The position of the coating device 27 is not limited to the illustrated location, and may be in front of the storage chamber.

  The sheet material 11 and the net material 12 drawn out from the roll-shaped member 28 are first applied with an adhesive 27 from below. The sheet material 11 and the net material 12 move along the spacers 22, 23, 24, and pass through the upper part of the storage chamber in which the abrasive grains 14 are stored. For example, 60,000 volts of static electricity is applied to the electrodes 25 and 26 provided above and below the storage chamber. By applying the static electricity, the abrasive grains 14 stored in the storage chamber rise to a powder shape and are coated so as to cover the sheet material 11 and the net material 12. Since the static electricity is as high as 60,000 volts, the gap between the base material 11 and the net material 12 is stacked and adhered by the energy when the abrasive grains 14 soar, and a high-density abrasive layer is formed. it can.

  The drawing shown in FIG. 2 (a) describes only the case where abrasive grains are attached to one surface of the sandpaper from below, but can be provided on both surfaces of the sandpaper. In addition, the sandpaper can be attached in the longitudinal direction by applying static electricity from one or the other to attach abrasive grains.

  In FIG. 2 (b), the sandpaper is composed of a sheet material 11, a net material 12, and an abrasive layer 14 '. In FIG. 2C, the sandpaper is composed of a sheet material 11, 11 'net material 12, and an abrasive layer 14'. The sheet material 11 ′ may be a material different from the mesh material 12 or a mesh pattern.

  FIGS. 3A to 3C are diagrams for explaining examples of producing various products by cutting the sandpaper of the present invention. 3A, the sandpaper shown in FIG. 2 is cut into strips. The strip-shaped sandpaper 31 is folded into a plurality of pieces, and is sandwiched between channel members (not shown) to form a channel brush. Moreover, the strip-shaped sandpaper 31 can be planted on a deck to form a planting brush.

  In FIG. 3 (b), a plurality of sandpapers wider than those in FIG. The sandpaper can be wound once. As for the said rod-shaped brush 33, the abrasive grain 32 has adhered to the whole surface. In FIG. 3C, a rod-like brush 35 is formed by bundling a plurality of rod-like brushes 33 rounded according to FIG. A plurality of the rod-like brushes 35 are bundled, and abrasive grains 36 are attached around the bunch.

  4 (a) to 4 (d) show a second embodiment of the present invention, which illustrates a state in which a sandpaper is produced by attaching a wire mesh to a sheet material and applying high static electricity. In FIG. 4A, the sheet material 41 has a wire mesh 42 attached thereto. In FIG. 4B, an adhesive 43 is applied to the sheet material 41 and the wire mesh 42. In FIG. 4 (c), the sheet material 41, the wire mesh 42, and the adhesive 43, as shown in FIG. 2, cause the abrasive particles to rise by high static electricity, and on the sheet material 41 and the wire mesh 42, Adhere so that it coats between each.

  As the wire mesh 42, a metal wire having a polygonal cross section can be used in addition to a single wire and a twisted wire. Even when the abrasive grain layer is worn, the metal mesh 42 made of polygons can be polished even in this portion because the corners of the material are exposed on the surface.

  FIGS. 5 (a) to 5 (f) are diagrams for explaining a third embodiment of the present invention and explaining a sandpaper having a metal mesh attached to both sides of a sheet material. 5 (a) and 5 (b), the sheet material 51 is provided with net materials 52 and 53 parallel to the edge of the material on the upper and lower surfaces. 5A to 5F, the abrasive grains are omitted.

  5 (C) and 5 (D), the sheet material 51 is provided with mesh materials 54 and 55 on the upper surface and the lower surface thereof obliquely from the end surface of the material. In the figure, abrasive grains are omitted. In the sandpaper, since the net materials 54 and 55 are slanted, the polishing force or the contact with the workpiece can be changed as shown in FIGS.

  5 (e) and 5 (f), the sheet material 51 is provided with a net material 56 parallel to the upper surface and an oblique net material 57 on the back surface. The sandpaper changes the polishing force or the contact with the workpiece depending on the front and back sides. 5 (a) to 5 (f) have been described with reference to the metal wire of Example 2, the sheet material and the net material shown in FIG. 1 can be used.

  The paper material can be made into bristles by twisting and rolling after rolling the sheet-like member. Further, the paper material can be made into bristle by cutting a sheet-like member into a strip shape, and adding rounding, twisting and twisting in the same manner as described above. The angle of the oblique net material can be arbitrarily changed.

  The abrasive grains used in the present invention are at least one kind of diamond, ceramics, alumina, silicon, zirconia, zirconium, glass, emery, cerium oxide, boron nitride (CBN), and green carbon (GC). The diamond is usually an industrial diamond produced artificially.

  As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example. The present invention can be modified in various ways without departing from the matters described in the claims. Since the sandpaper preparation method and the sandpaper of the present invention are performed by applying high static electricity to the abrasive grains, the amount of adhesion and the direction of the abrasive grains during the adhesion are different from the normal ones. The state of wear is clearly different.

DESCRIPTION OF SYMBOLS 11 ... Sheet material 12 ... Net material 13 ... Adhesive 14 ... Abrasive grain 21 ... Base 22, 23, 24 ... Spacer 25, 26 ... Electrode 27 ... Adhesive 28 ... Roll-shaped member

Claims (13)

A net material made of at least one of paper, cloth, synthetic resin, non-woven fabric, or metal material on a sheet material made of at least one of paper, cloth, synthetic resin, rubber material, non-woven fabric, sponge, cork, and metal And the step of bonding
Applying an adhesive to the sheet material and the net material;
Applying a high static electricity to the container containing the abrasive grains;
Causing the abrasive grains stored in the storage portion to rise by application of the high static electricity, and attaching the abrasive grains on the sheet material and the net material; and
A method for producing sandpaper, comprising:   2. The sandpaper manufacturing method according to claim 1, wherein the sheet material is knitted with at least one member.   The method for producing sandpaper according to claim 1 or 2, wherein a perforation for cutting is provided in the sheet material and the net material to which the abrasive grains are attached.   The abrasive is at least one kind of diamond, ceramics, alumina, silicon, zirconia, zirconium, glass, emery, cerium oxide, boron nitride (CBN), and green carbon (GC). The sandpaper production method according to any one of claims 1 to 3, wherein the sandpaper is attached so as to cover the entire surface.   The method for producing sandpaper according to any one of claims 1 to 4, wherein the net material is a material in which at least one line is knitted or woven. On a sheet material composed of at least one of paper, cloth, synthetic resin, rubber material, non-woven fabric, sponge, cork, and metal, a net material composed of at least one of paper, fabric, resin, non-woven fabric, or metal material The bonded base material,
An adhesive applied on the substrate;
Abrasive grain layer that is attached so that the abrasive grains soared when covering the sheet material and the net material when applying high static electricity,
Sandpaper characterized by comprising at least.   The sandpaper according to claim 6, wherein the substrate on which the abrasive layer is adhered by an adhesive is wound in a roll shape.   The sandpaper according to claim 6 or 7, wherein the substrate is provided with the abrasive layer on both sides by an adhesive.   The sandpaper according to any one of claims 6 to 8, wherein the net material is provided so as to be inclined with respect to the sheet material.   The base material to which the abrasive grain layer is adhered by an adhesive is cut into a strip shape, or a plurality of cuts are made into a sheet shape. The sandpaper described in item 1.   The sandpaper according to any one of claims 6 to 10, wherein the base material to which the abrasive layer is adhered by an adhesive is rounded and formed into a rod shape.   The sandpaper according to any one of claims 6 to 11, wherein a plurality of the base materials to which the abrasive layer is attached by an adhesive are rounded and formed integrally. .   The sandpaper according to any one of claims 6 to 12, wherein the net material made of the metal material has a cross section of a circle, an ellipse, and a polygon.

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