JP2019119008A - Abrasive roll and method for manufacturing abrasive roll - Google Patents

Abstract

To provide: an abrasive roll capable of easily improving abrasiveness, and a method for manufacturing the abrasive roll.SOLUTION: An abrasive roll includes a core member extending in the axial direction, and an abrasive part including a sheet member of non-woven fabric wound multiple times around the core member, where multiple perforations penetrating in the thickness direction of the sheet member are formed in the sheet member.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a polishing roll and a method of manufacturing the polishing roll.

  DESCRIPTION OF RELATED ART Conventionally, the grinding | polishing roll comprised by winding several sheets of a nonwoven fabric around a core member is known. For example, the polishing roll of Patent Document 1 is used to polish an object by rotating the object while in contact with the outer peripheral surface.

JP-A-9-201232

  Here, in the polishing roll as described above, the target can be efficiently polished because the polishing property is improved. In addition, it is required that the improvement of the abradability of such an abrasive roll be achieved by a simple structure. From the above, it has been required to easily improve the abradability of the abrasive roll.

  A polishing roll according to an aspect of the present invention is a polishing roll including an axially extending core member and a polishing unit having a non-woven sheet member wound around a plurality of core members, and the sheet member includes: A plurality of penetration parts penetrating in the thickness direction of the sheet member are formed.

  According to the present invention, it is possible to provide a polishing roll capable of easily improving the abrading property, and a method of manufacturing the polishing roll.

FIG. 1 is a side view of a polishing roll according to an embodiment. FIG. 2 is a view of the outer peripheral surface of the polishing roll as viewed in the radial direction. FIG. 3 is a view showing the sheet member in the unwound state. FIG. 4 is a schematic view showing an apparatus for winding a sheet member around a core member. FIG. 5 is a view showing a roll body in which a sheet member is wound around a core member. FIG. 6 is a schematic view showing an apparatus for adhering an adhesive liquid to a sheet member. It is the figure which looked at the outer peripheral surface of the grinding | polishing roll which concerns on a modification from radial direction. It is the figure which looked at the outer peripheral surface of the grinding | polishing roll which concerns on a modification from radial direction.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding elements are denoted by the same reference numerals and redundant description will be omitted.

  A polishing roll 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a side view of a polishing roll. FIG. 2 is a partially enlarged view of the polishing roll 1 as viewed from the outer peripheral direction. As shown in FIG. 1, the polishing roll 1 includes a core member 12 and a polishing unit 13. In the present embodiment, the center of the polishing roll 1 may be referred to as a central axis line CL, and the direction in which the central axis line CL extends may be referred to as an “axial direction”.

  The core member 12 is a cylindrical member extending along the axial direction. The core member 12 functions as a core when winding a non-woven sheet member 14 described later. The core member 12 is made of, for example, non-ferrous iron material or the like.

  The polishing unit 13 has a non-woven sheet member 14 (see FIG. 3) wound around the core member 12 a plurality of times. The sheet member 14 is spirally wound around the core member 12 a plurality of times. Thereby, the grinding | polishing part 13 will have a structure where the sheet member 14 of multiple layers was accumulated in the radial direction. The polishing portion 13 is an annular member formed on the outer peripheral side of the core member 12. The polishing portion 13 has a pair of end surfaces 13a and 13b opposed in the axial direction, and an outer peripheral surface 13c which extends between the end surfaces 13a and 13b and is formed on the outer peripheral side. The polishing unit 13 polishes an object on the outer circumferential surface 13 c. The dimension of the polishing portion 13 is not particularly limited, and the dimension in the width direction of the polishing portion 13 (the dimension between the end surfaces 13a and 13b) may be approximately 3 to 1,400 mm, and the diameter of the polishing portion 13 may be approximately 50 to 1,000 mm. The direction in which the sheet member 14 is wound in the circumferential direction around the central axis line CL may be referred to as a “winding direction”.

  Examples of non-woven fabrics used for the polishing portion 13 include polyamides (eg, nylon 6 and nylon 6, 6 composed of polycaprolactam and polyhexamethyl adipamide), polyolefins (eg, polypropylene and polyethylene), polyesters (eg, Polyethylene terephthalate) and thermoplastic organic fibers such as polycarbonate may be used. Nonwovens composed of nylon and polyester fibers are commonly used.

  The thickness of the fibers is generally about 19 to 250 μm in diameter. The thickness of the non-woven fabric is generally about 2 to 50 mm. The arranged fibers are connected to one another by intersections, contact points by friction, adhesion and the like. The bonding of the fibers may be performed by melting the fibers themselves, or may be performed separately using an adhesive.

  The non-woven fabric contains abrasive particles. Abrasive particles include all known abrasives, as well as combinations and agglomerates of such materials. Soft abrasives include, but are not limited to, inorganic materials such as flint, silica, pumice, and calcium carbonate, and organic polymer materials such as polyester, polyvinyl chloride, methacrylate, methyl methacrylate, polycarbonate, and polystyrene, and the above materials And any combination of Hard abrasives include, but are not limited to, aluminum oxide, aluminum oxides such as heat treated aluminum oxide and white aluminum oxide, and silicon carbide, alumina zirconia, diamond, ceria, cubic boron nitride, garnet, and combinations of the above. Be

  The adhesive is used to bond the non-woven fibers to each other or the non-woven fibers and the abrasive particles. The adhesive for bonding the fibers of the non-woven fabric may be different from or the same as the adhesive for bonding the fibers of the non-woven fabric and the abrasive particles. When the same adhesive is used, bonding of non-woven fibers to each other and bonding of non-woven fibers and abrasive particles may be simultaneously performed in the production process.

  Adhesives for bonding fibers of non-woven fabric are, for example, thermosetting, adhesive, aqueous suspension and organic solvent solution of epoxy, melamine, phenol, isocyanate and isocyanurate resin, or rubber system such as SBR, SBS, SIS, etc. It is also possible to use polymer solutions or suspensions. These are applied to fibers by a dip coating method, a roll coating method, a spray coating method or the like and cured to form a non-woven fabric.

  As shown in FIG. 2, a plurality of penetration portions 16 penetrating in the thickness direction of the sheet member 14 are formed in the sheet member 14 constituting the polishing portion 13. The penetration part 16 is formed by winding up the sheet member 14 using an apparatus as shown in FIG. The penetration part 16 which appears in the outer peripheral surface 13c of the grinding | polishing part 13 is formed in the sheet member 14 wound by outermost periphery. Therefore, the sheet member 14 wound on the inner peripheral side by one sheet of the outermost sheet member 14 is exposed from the through portion 16. The outermost sheet member 14 may be referred to as a "sheet member 14A", and the sheet member 14 may be referred to as a "sheet member 14B" which is wound on the inner peripheral side by one sheet from the sheet member 14A. With such a configuration, a plurality of shallow groove portions are formed on the outer peripheral surface 13c of the polishing portion 13 by the edge portion of the through portion 16 of the sheet member 14A and the sheet member 14B exposed from the through portion 16.

  The penetrating portion 16 has a shape extending in the first direction D1. That is, since the penetrating portion 16 is formed by expanding what was originally the slit 6, it has a substantially elliptical shape, a substantially rectangular shape including a rhombus shape, or the like. The penetration part 16 has the end parts 16a and 16a in the both ends of 1st direction D1. The end portions 16a, 16a correspond to the both end portions of the slit 6 in the first direction D1 before being opened. The penetrating portions 16 are provided at a predetermined pitch in the first direction D1, and are provided at a predetermined pitch in a second direction orthogonal to the first direction D1. In the present embodiment, the first direction D1 corresponds to the axial direction in which the central axis CL extends. The second direction D2 corresponds to a winding direction which is a direction in which the sheet member is wound.

  The sheet member 14 constituting the polishing unit 13 is divided into a plurality of regions 3 extending in the first direction D1 and arranged in the second direction. A boundary 4 extending in the first direction D1 is formed between the pair of regions 3. In FIG. 2, imaginary lines are attached to some of the boundaries 4. The boundary portion 4 forms a straight line extending straight in the first direction D1 when viewed from the radial direction. In addition, when the virtual line of the boundary 4 is attached to the entire circumference of the polishing roll 1, the virtual line of the boundary 4 draws a circle. The boundary portion 4 is defined as a reference line set for the through portions 16 aligned at a predetermined pitch in the first direction D1 among the plurality of through portions 16. The boundary portion 4 as the reference line is a line which is set to pass through the center position of each through portion 16 aligned in the first direction D1 and to pass through the end portions 16a and 16a. However, due to manufacturing errors, the positions of the end portions 16a and 16a may be deviated, and the virtual line of the boundary portion 4 may not completely overlap with the end portions 16a and 16a.

  As described above, the “boundary portion” corresponds to the virtual line when the virtual line is set to pass through the approximate center position of the plurality of through portions 16 aligned in the first direction. Also, the “region” is a portion virtually divided by the boundary 4 and the boundary 4. The area 3 is a band-like area set over the entire circumference of the outer peripheral surface 13 c of the polishing portion 13. As shown in FIG. 4, in the band-shaped sheet member 14 in the unwound state, the boundary portion 4 is defined by an imaginary line passing through the linear slit 6. The area 3 is set as an area in which the slit 6 is not formed in the extending direction of the sheet member 14.

  As described above, the boundary portion 4 is set based on the through portions 16 aligned in the first direction D1. Therefore, a plurality of penetrations 16 extending in the first direction are formed in the boundary 4. In the boundary portion 4, the plurality of penetration portions 16 are disposed apart from each other in the first direction D1. The position where the through portion 16 and the through portion 16 are separated functions as the connecting portion 7 which connects the regions 3 with each other. Therefore, the pair of regions 3 adjacent to each other in the second direction D2 are connected to each other at the connection portion 7 formed between the through portions 16.

  That is, the “connection portion” corresponds to a portion on the imaginary line of the boundary portion 4 in which the penetration portion 16 is not formed. The connection portion 7 is a portion fixed so that the adjacent regions 3 do not separate from each other without spreading the opening as in the penetrating portion 16 even when a force is applied to expand each region 3 in the second direction. It is.

  In the present embodiment, the connection portion 7 of the boundary portion 4 formed on one side in the second direction D2 with respect to the region 3 and the connection portion 7 of the boundary portion 4 formed on the other side are the first They are arranged at different positions in the direction D1. The “different positions” may be different from each other as long as the central positions in the second direction D2 in the connection portion 7 are different from each other, and a part in the second direction D2 may overlap. The penetrating portion 16 of the boundary portion 4 formed on one side in the second direction D2 relative to the region 3 and the penetrating portion 16 of the boundary portion 4 formed on the other side are different positions in the first direction D1. Is located in That is, in the boundary portions 4 adjacent to each other, the penetrating portions 16 at one boundary portion and the penetrating portions 16 at the other boundary portion 4 have a staggered positional relationship. As described above, a structure in which the plurality of through parts 16 (the slits 6 before winding) are arranged in a zigzag may be referred to as a skip slit. In the present embodiment, the penetrating portions 16 and the boundary portions 4 are arranged at the same position in the boundary portions 4 adjacent to each other. That is, the pair of boundary portions 4 forms one set to form a staggered arrangement pattern of the through portions 16.

  Although the dimensions of the region 3, the through portion 16, and the connection portion 7 configured as described above are not particularly limited, for example, they may be set as follows. The dimension of the region 3 in the second direction D2 may be 1 to 100 mm, and may be 5 to 50 mm. The dimension in the first direction of penetration part 16 may be 1 to 100 mm, and may be 5 to 50 mm. The dimension in the first direction of the connection portion 7 may be 1 to 100 mm, and may be 5 to 50 mm. In addition, the penetration part 16 (namely, slit 6) may be formed only in the sheet member 14 of an outer peripheral part among the sheet members 14 currently wound.

  Next, with reference to FIGS. 4 to 7, a method of manufacturing the polishing roll 1 according to the present embodiment will be described. In the manufacturing method, first, a step of preparing a non-woven sheet member 14 in which a plurality of through portions 16 (slits 6) penetrating in the thickness direction is formed is performed. In this step, as shown in FIG. 4, a sheet member 14 having a plurality of slits 6 arranged in a staggered manner is prepared. However, in FIG. 4, the width dimension of the sheet member 14 is set to the size in the axial direction of the finished polishing roll 1, but the sheet member at this stage has a width larger than the dimension shown in FIG. It is set to a dimension (a width dimension of several polishing rolls 1). At the stage of this process, the non-woven sheet member 14 contains abrasive particles and an adhesive for fixing them.

  Next, the process of winding a plurality of sheet members 14 around the axially extending core member 12 is performed. However, the core member 12 at this stage has a length for several polishing rolls 1. For example, dry winding is performed by a winding device 50 as shown in FIG. The winding device 50 has a portion for holding the roll body 51 of the sheet member 14 in which the slits 6 are formed. The winding device 50 feeds the sheet member 14 from the roll body 51 and guides the sheet member 14 to the winding unit 52 via a plurality of rollers. The winding unit 52 forms the roll body 54 by winding the sheet member 14 around the core member 12 a plurality of times. At this time, the sheet member 14 is wound in a state in which a tension is applied to widen the slit 6 (see FIG. 4). In addition, you may fix by the predetermined | prescribed method so that the wound sheet member 14 may not remove from the roll body 54. As shown in FIG.

  Next, the step of fixing the sheet member 14 wound around the core member 12 is performed. This step includes a step of applying an adhesive or the like to the sheet member 14 of the roll body 54 as shown in FIG. 5 and a step of fixing the sheet member 14 by curing the adhesive. As a method of applying an adhesive or the like to the sheet member 14 of the roll body 54, the method shown in FIG. 6 is employed. This method is carried out by causing the roll body 54 to be adhered to the roll body 54 by immersing the roll body 54 in the adhesive layer 61 with the immersion layer 61.

  Next, the step of forming the plurality of polishing rolls 1 is performed by cutting the roll body 54 at a plurality of locations in the axial direction. In this process, the roll body 54 is installed in the cutting device. Then, the cutting device cuts the sheet member 14 and the core member 12 to which the roll body 54 is fixed to a predetermined size. The fixed sheet member 14 is configured as a polishing unit 13. The step of cutting the roll body 54 may not be performed, and the roll body 54 may be used as the polishing roll 1 as it is. By the above, the polishing roll 1 shown in FIG. 1 is obtained.

  Next, the operation and effects of the polishing roll 1 according to the present embodiment will be described.

  The polishing roll 1 is a polishing roll 1 including a core member 12 extending in the axial direction and a polishing unit 13 having a non-woven sheet member 14 wound around the core member 12 in plural numbers. A plurality of penetrating portions 16 penetrating in the thickness direction of the sheet member 14 are formed.

  In the polishing roll 1, a plurality of through portions 16 penetrating in the thickness direction of the sheet member 14 are formed in the sheet member 14. In this case, the penetrating portion 16 of the outermost sheet member 14A is formed on the outer peripheral surface 13c of the polishing portion 13 which functions as a polishing surface. As a result, a plurality of shallow groove portions are formed on the outer peripheral surface 13 c of the polishing portion 13 by the edge portion of the through portion 16 of the sheet member 14 A and the sheet member 14 B exposed from the through portion 16. Therefore, when the polishing roll 1 polishes an object, the polishing force is increased by the action of the edge portion (the edge of the edge portion of the penetrating portion 16) of the groove portion of the outer peripheral surface 13c. In addition, since the particles of the polished object can flow into the groove and escape, the decrease in the polishing force due to the particles being clogged on the polishing surface is suppressed. Further, such a polishing property can be improved by a simple configuration in which only the through portion 16 is formed in the sheet member 14. By the above, the polishability can be easily improved.

  In the polishing roll 1, the sheet member 14 is divided into a plurality of regions 3 extending in the first direction D1 and arranged in the second direction D2, and the first direction D1 is formed between the pair of regions 3. A boundary portion 4 extending in the first direction D1 is formed in the boundary portion 4, and a pair of regions 3 adjacent to each other in the second direction D2 The connection portions 7 may be connected to each other at end portions in the direction D1 of FIG. Thereby, the penetrating portions 16 can be arranged in the first direction D1 and the second direction D2 on the outer peripheral surface 13c of the polishing portion 13. Therefore, the improvement of the above-mentioned polishability can be aimed at over the wide range of peripheral face 13c. Moreover, since the connection part 7 mutually connects each area | region 3, even when the above-mentioned penetration part 16 is formed, damage, such as a tear of sheet member 14A of the outermost periphery of grinding | polishing part 13 can be suppressed. .

  In the polishing roll 1, a plurality of penetrating portions 16 which are disposed to be separated from each other in the first direction D1 are formed in the boundary portion 4, and a pair of regions 3 adjacent to each other in the second direction D2 are penetrating portions The connection portion 7 of the boundary portion 4 connected to each other at the connection portion 7 formed between 16 and formed on one side in the second direction D2 with respect to the region 3 and the boundary portion 4 formed on the other side The connection 7 may be disposed at a different position in the first direction D1. For example, in the portion where the through portions 16 are densely packed in the second direction D2, the above-described effect of improving the abradability is easily obtained, but the strength of the sheet member 14 is easily reduced. On the other hand, in the portion where the connection portions 7 are densely packed in the second direction D2, while the strength of the sheet member 14 is easily secured, it is difficult to obtain the effect of improving the abrasivity. Therefore, by arranging the connection portions 7 in a staggered manner, the effect of improving the abrasivity and the effect of securing the strength of the sheet member 14 can be obtained in a well-balanced manner over a wide range of the outer peripheral surface 13 c of the abrading portion 13.

  In the polishing roll 1, the first direction D1 may be the winding direction of the sheet member 14, and the second direction D2 may be the axial direction. In this case, when the sheet member 14 is wound around the core member 12 in order to expand the slits 6 of the sheet member 14 to an appropriate size to form the through portion 16, the sheet member 14 is axially fixed in a predetermined direction. Perform winding while applying tension of size. On the other hand, when the sheet member 14 is wound around the core member 12, even if tension is applied to the sheet member 14 in the winding direction, the penetrating portion 16 does not spread too much. Therefore, the sheet member 14 can be wound around the core member 12 after securing sufficient tension in the winding direction on the sheet member 14.

  In the method of manufacturing the polishing roll 1 according to the present embodiment, a step of preparing a non-woven sheet member 14 in which a plurality of penetration portions 16 penetrating in the thickness direction is formed, and a plurality of sheet members 14 on the core member 12 extending in the axial direction And a step of fixing the sheet member 14 wound around the core member 12.

  According to such a manufacturing method of the polishing roll 1, the same operation and effect as the above-mentioned polishing roll 1 can be obtained.

  The present invention is not limited to the embodiments described above, and may be modified as appropriate.

  The arrangement structure of the penetration part 16 is not limited to the above-mentioned embodiment. For example, a configuration as shown in FIG. 7 may be employed. In FIG. 7, the first direction D1 may be an axial direction, and the second direction D2 may be a winding direction of the sheet member 14. Thus, the penetrating portions 16 extend in the axial direction and are arranged in the winding direction. In this case, when viewed along the winding direction of the sheet member 14, the penetrating portion 16 exists in the entire axial direction of the outer peripheral surface 13 c of the polishing portion 13. Therefore, the penetrating portion 16 can be secured over the entire width of the polishing roll 1 with respect to the processing surface of the object. Moreover, as shown in FIG. 7, the penetration part 16 does not need to be provided with two or more in the axial direction, and as shown in FIG. 8, one large penetration part 16 may be formed in the axial direction.

  Further, the connection portion 7 of the boundary portion 4 formed on one side in the second direction D2 with respect to the region 3 and the connection portion 7 of the boundary portion 4 formed on the other side in the first direction D1 It may be arranged at the same position as each other. Thus, the through parts 16 do not necessarily have to be arranged in a staggered manner. Moreover, in the embodiment shown in FIG. 2 and FIG. 7, the two boundaries 4 form one set to form a zigzag arrangement pattern of the through parts 16. Instead of this, a large number of boundary portions 4 may be set as one set to form a staggered arrangement pattern of the through portions 16. Alternatively, the arrangement pattern of the through parts 16 may not be particularly regular.

  Moreover, in the above-mentioned embodiment, the penetration part 16 extended only in the 1st direction D1 was formed. In addition to this, a through portion 16 extending in the second direction D2 may be additionally formed.

  DESCRIPTION OF SYMBOLS 1 ... Polishing roll, 3 ... Area | region, 4 ... Boundary part, 7 ... Connection part, 12 ... Core member, 13 ... Polishing part, 14 ... Sheet member, 16 ... Penetration part.

Claims (6)

An axially extending core member,
And a polishing unit having a non-woven sheet member wound in a plurality of turns around the core member.
A polishing roll, wherein a plurality of penetration parts penetrating in the thickness direction of the sheet member are formed in the sheet member. The sheet member is divided into a plurality of regions extending in a first direction and arranged in a second direction,
A boundary portion extending in the first direction is formed between the pair of regions.
In the boundary portion, the penetration portion extending in the first direction is formed;
The polishing roll according to claim 1, wherein a pair of the regions adjacent to each other in the second direction are connected to each other at a connecting portion formed on an end side in the first direction of the through portion. . At the boundary, a plurality of the through parts arranged to be separated from each other in the first direction are formed;
The pair of the regions adjacent in the second direction are connected to each other at the connection portion formed between the through portions,
The connection portion of the boundary portion formed on one side in the second direction with respect to the region and the connection portion of the boundary portion formed on the other side have different positions in the first direction. The abrasive roll according to claim 2, wherein the abrasive roll is arranged in The first direction is the axial direction,
The abrasive roll according to claim 2, wherein the second direction is a winding direction of the sheet member. The first direction is a winding direction of the sheet member,
The polishing roll according to claim 2, wherein the second direction is the axial direction. Preparing a non-woven sheet member in which a plurality of penetration parts penetrating in the thickness direction are formed;
Winding a plurality of the sheet members around an axially extending core member;
And b. Fixing the sheet member wound around the core member.

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