JP2019177991A - Guide roller - Google Patents

Abstract

To provide a guide roller in which an elastic member is prevented from being detached from a roller body.SOLUTION: A guide roller of the present invention has a roller body and an elastic member. The roller body includes a plurality of through holes provided along a rotation axis direction of the guide roller at intervals in a circumferential direction, and a first groove provided along a circumferential direction on a circumferential surface. The elastic member is provided at a peripheral end of the roller body and has a wear resistance. The elastic member includes: a second groove for holding a wire provided concentrically with the first groove; a first embedded portion embedded in the first groove; and a second embedded portion embedded in the through holes.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a guide roller for guiding the conveyance of a wire.

  Conventionally, a guide roller that guides the conveyance of the wire while holding the wire is known. As such a guide roller, a guide roller is known in which a groove is provided on the outer periphery of a metal or synthetic resin roller body (sheave housing part) and a soft elastic member (urethane resin) is baked to form a guide groove. (For example, Patent Document 1).

  There is also known a guide roller in which a ring-shaped roller body (core body) made of an aluminum material is incorporated in an elastic member (roller) made of rubber or a resin material (for example, Patent Document 2).

Japanese Patent Laid-Open No. 10-286752 JP 2000-44123 A

  In patent document 1, since an elastic member is baked into the outer peripheral groove of a roller main body made of metal or the like, an adhesion process or a heating process is required, resulting in an increase in manufacturing cost. In addition, when a high tension is applied to the wire accommodated in the outer peripheral groove, the wire is shaken, and when the elastic member holding the wire is excessively deformed, the elastic member is peeled off from the roller body. There is a risk of detachment from the roller body.

  In Patent Document 2, a guide groove that accommodates a wire is formed in an elastic member having a rectangular cross section, and the tension applied to the wire and the load in the left-right direction (the rotation axis direction of the core body) are applied to the elastic member and the roller body. Supported on the outer peripheral surface. In particular, in order to suppress the displacement of the wire in the left-right direction, a considerable rigidity is required for the elastic member that holds the wire. However, if the rigidity is excessively increased, the elastic member is easily worn by friction with the wire, and the elastic member may be detached from the roller body due to the breakage of the elastic member due to the wear.

  In view of the above circumstances, an object of the present invention is to provide a guide roller in which the elastic member is prevented from being detached from the roller body.

In order to achieve the above object, the guide roller of the present invention guides the conveyance of the wire.
The guide roller has a roller body and an elastic member.
The roller body includes a plurality of through holes provided along the rotation axis direction of the guide roller at intervals in the circumferential direction, and a first groove provided along the circumferential direction on the circumferential surface. Have.
The elastic member is provided at the peripheral end of the roller body and has wear resistance.
The elastic member includes a second groove for holding a wire provided concentrically with the first groove, a first embedded portion embedded in the first groove, and embedded in the through hole. Second embedded portion.

According to the above configuration, the guide roller of the present invention has the first embedded portion that is an elastic member embedded in the first groove. As a result, even if the first embedded portion is pressed in the rotational axis direction due to the load being applied to the wire in the rotational axis direction, the first embedded portion is the side wall (opening surface) of the first groove. Hang on.
As a result, even if the wire to be conveyed is shaken, the elastic member that holds the wire is hooked to the side wall (opening surface) of the first groove, so that the elastic member is hooked to the roller body. It is prevented that the shake load is repeatedly applied to the portion (for example, the second embedded portion). Accordingly, the latching portion is prevented from being broken and the elastic member is prevented from being detached from the roller body.

  The guide roller of the present invention has a second embedded portion that is an elastic member embedded in the through hole. Thereby, when the guide roller rotates, the elastic member provided at the peripheral end of the roller main body is hooked on the inner wall surface of the through hole, so that the elastic member does not separate from the roller main body radially outward.

A V-shape may be sufficient as the cross-sectional shape of the said 2nd groove | channel in the rotating shaft direction of the said roller main body.
Thereby, when a wire is hold | maintained at an elastic member, since the side wall (opening surface) of a 2nd groove | channel will always be in contact with a wire, the retention strength which hold | maintains a wire in a predetermined location improves.

The cross-sectional shape of the first and second grooves in the rotation axis direction of the roller body is V-shaped,
The groove angle of the first groove may be larger than the groove angle of the second groove.
Thereby, the load applied to the 2nd groove | channel toward the rotating shaft direction from the wire propagates to the wide side wall (opening surface) opened to the radial direction of the 1st groove | channel via the elastic member. Therefore, even if a load is applied to the elastic member along the rotation axis direction from the wire held in the second groove, the first groove is opposed to the wire in the rotation axis direction via the elastic member. It propagates to the side wall (opening surface). As a result, an unreasonable load is not applied to the latching portion (for example, the second embedded portion) on which the elastic member latches on the roller body, so that the latching portion is prevented from being broken and the elastic member is detached from the roller body. It is prevented.

The cross-sectional shape of the first groove in the rotation axis direction of the roller body may be U-shaped.
Thereby, the volume of the elastic member interposed between the bottom part of the 2nd groove | channel where the load of a wire applies and a 1st groove | channel can be taken large. Therefore, it is possible to employ a highly flexible material for the elastic member. Therefore, by holding a wire with this elastic member, the flexibility with respect to the blurring of the wire increases, and the blurring of the wire can be effectively suppressed.

The bottom portion of the second groove may be disposed radially inward from the outer peripheral end of the roller body in the radial direction.
Accordingly, the bottom of the second groove is configured to face the side wall (opening surface) of the first groove in the rotation axis direction via the elastic member. Therefore, even when a load is applied to the wire held by the elastic member in the direction of the rotation axis, a drag according to the load is applied to the wire from the side wall (opening surface) of the first groove via the elastic member. .
Therefore, even if a load is applied to the wire in the direction of the rotation axis, the load is offset by the drag from the side wall (opening surface) of the first groove, so that an excessive load is not applied to the elastic member. Is done. This prevents the elastic member from being detached from the roller body.

The bottom of the first groove may communicate with the through hole.
Accordingly, the first embedded portion and the second embedded portion are connected, and the elastic member is firmly fixed to the peripheral end portion of the roller body. Therefore, even when the guide roller rotates at high speed, the elastic member is effectively prevented from detaching radially outward from the roller body.

The roller body further includes a plurality of communication holes that connect the bottom of the first groove and the through hole,
The first embedded portion may be connected to the second embedded portion through the communication hole.
Thereby, the first embedded portion and the second embedded portion can be connected regardless of the radial dimension of the communication hole. That is, since the first embedded portion embedded in the first groove and the second embedded portion embedded in the through hole are separated from each other, in setting the groove angle of the first groove The degree of freedom is improved, and further, the communication hole can be provided in the roller body at an appropriate position according to the shape of the roller body. That is, the degree of freedom in designing the first groove and the communication hole in the roller body is improved.

  As described above, according to the present invention, it is possible to provide a guide roller in which the elastic member is prevented from being detached from the roller body.

It is a figure which shows the structural example of the principal part of the wire saw which concerns on the 1st Embodiment of this invention. It is a front view which shows the principal part of the guide roller of the said embodiment. FIG. 3 is a cross-sectional view taken along the line ZZ ′ in FIG. 2. It is an expanded sectional view which expands and shows the peripheral edge part periphery of the roller main body of the said embodiment. It is an expanded sectional view which expands and shows the peripheral edge part periphery of the said roller main body. It is a cross-sectional perspective view which shows the cross section of the said guide roller partially. It is an expanded sectional view showing other composition of a guide roller concerning the above-mentioned embodiment. It is an expanded sectional view of a guide roller concerning a 2nd embodiment of the present invention. It is an expanded sectional view of a guide roller concerning a 3rd embodiment of the present invention. It is an expanded sectional view of the guide roller which concerns on the modification of this invention. It is an expanded sectional view of the guide roller which concerns on the said modification.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1. First Embodiment <Configuration of Wire Saw>
FIG. 1 is a diagram illustrating a configuration example of a main part of the wire saw 1 according to the first embodiment of the present invention. The X axis, the Y axis, and the Z axis in FIG. 1 indicate three axial directions that are orthogonal to each other, and are common to all the drawings in this specification.

  The wire saw 1 includes a plurality of reel bobbins 2, a wire 3, a plurality of main rollers 4, and a guide roller 100.

  The plurality of reel bobbins 2 includes two reel bobbins 2a. The reel bobbin 2 a is wound around the wire 3. The reel bobbin 2a is configured to be rotatable clockwise and counterclockwise about the Z axis. Thereby, one reel bobbin 2a winds up the wire 3, and the other reel bobbin 2a unwinds the wire 3.

  The wire 3 is made of, for example, a metal material and is configured in a thread shape. One end of the wire 3 is supported by one reel bobbin 2a. The other end of the wire 3 is supported by the other reel bobbin 2a. Although the diameter of the wire 3 is not specifically limited, For example, it is about 0.1 mm.

  The wire 3 is conveyed to the plurality of main rollers 4 by rotating one reel bobbin 2a clockwise around the Z axis and rotating the other reel bobbin 2a counterclockwise around the Z axis. Further, the reel bobbin 2a is conveyed and wound up.

  The plurality of main rollers 4 includes three main rollers 4a. As shown in FIG. 1, the three main rollers 4a are arranged at the apex positions of the triangles when viewed from the Y-axis direction, and are configured to rotate clockwise and counterclockwise around the Y-axis. The plurality of main rollers 4 may be composed of two main rollers 4a.

  A plurality of grooves (not shown) are formed on the outer peripheral surface of the main roller 4a at predetermined intervals in the Y-axis direction. A groove formed on the outer peripheral surface of the main roller 4 a accommodates the wire 3. As a material constituting the main roller 4a, for example, urethane resin, stainless steel, ceramic material, or the like can be employed, and typically, urethane resin is employed.

  The plurality of main rollers 4 winds the wire 3 while applying tension to the wire 3 conveyed from one reel bobbin 2a, and winds the wire 3 to the other reel bobbin 2a.

  The plurality of main rollers 4 repeats clockwise rotation and counterclockwise rotation around the Y axis while a workpiece (not shown) is pressed against the tensioned wire 3. Cut the workpiece. In other words, the workpiece is cut by a reciprocating motion similar to that of a saw.

  A plurality of guide rollers 100 are provided between the plurality of reel bobbins 2 and the plurality of main rollers 4. The guide roller 100 guides the conveyance of the wire 3 from one reel bobbin 2a to the plurality of main rollers 4, and guides the conveyance of the wire 3 from the plurality of main rollers 4 to the other reel bobbin 2a.

  That is, the guide roller 100 guides the wire 3 unwound from one reel bobbin 2a to the plurality of main rollers 4, and guides the wire 3 unwound from the plurality of main rollers 4 to the other reel bobbin 2a. . The guide roller 100 maintains a state where tension is applied to the wire 3 so that the wire 3 does not bend between the plurality of reel bobbins 2 and the plurality of main rollers 4.

[About guide rollers]
Next, the configuration of the guide roller 100 will be described in detail.

(Application example 1)
2 is a front view showing the main part of the guide roller 100, and FIG. 3 is a cross-sectional view taken along the line ZZ ′ of FIG. The guide roller 100 includes a roller body 110 and an elastic member 120.

  The roller body 110 includes a hub 111, spokes 112, and a rim 113, which are integrally configured. The roller body 110 is made of a metal such as aluminum, stainless steel, or magnesium, or a hard resin, and is typically made of aluminum.

  The hub 111 is an annular structure that is formed in an annular shape around the central axis C, where the rotational center (rotational axis) of the guide roller 100 is the central axis C. As shown in FIG. 2, the hub 111 is disposed radially inside the rim 113. The inner diameter and outer diameter of the hub 111 are not particularly limited, but are about several tens of millimeters, for example.

  Hereinafter, in the present specification, the radial direction of the roller body 110 is “radial direction”, the direction from the central axis C toward the rim 113 is “radially outward”, and the direction from the rim 113 side toward the central axis C is “radial direction”. Inside, further, the direction around the central axis C is described as “circumferential direction”, and the direction along the central axis C is described as “central axis C direction”.

  The hub 111 has a center hole 111a and a plurality of mounting holes 111b. The center hole 111a is inserted through an arbitrary rotation axis S. The opening shape of the center hole 111a is typically circular, but is not limited thereto, and may be any shape such as a rectangular shape, a triangular shape, or an elliptical shape.

  The plurality of mounting holes 111b are provided in the hub 111 at predetermined intervals in the circumferential direction. The attachment hole 111b passes through the hub 111 in the central axis C direction (Y-axis direction). The mounting hole 111b is inserted through, for example, a bolt B as shown in FIG. The bolt B is screwed into a hole H1 provided in the mounting hole 111b and the flange portion F of the rotating shaft S. Thereby, the guide roller 100 is attached to the rotating shaft S.

  The number of mounting holes 111b provided in the hub 111 is three, but is not limited thereto, and may be one or two or more.

  Hub 111 is connected to spoke 112. The spoke 112 extends radially outward from the hub 111 and is connected to the rim 113. A plurality of spokes 112 are provided at predetermined intervals in the circumferential direction. The number of spokes 112 is six in FIG. 2, but is not limited to this, and can be increased or decreased as necessary. Moreover, it is not limited to a spoke shape, and may be a disk shape.

  The rim 113 is an annular structure configured in an annular shape around the central axis C. The inner diameter and outer diameter of the rim 113 are not particularly limited, but are about several hundred mm, for example. Further, the thickness of the rim 113 in the direction of the central axis C is not particularly limited, and is about several mm, for example.

  4 and 5 are enlarged views showing a region E in the vicinity of the peripheral end portion 110a of the roller body 110. FIG. FIG. 6 is a cross-sectional perspective view partially showing a cross section of the guide roller 100.

  The rim 113 has a plurality of through holes 113a and a first groove 113b. The plurality of through holes 113a are provided in the rim 113 at predetermined intervals in the circumferential direction. The through hole 113a is provided in the rim 113 along the central axis C direction.

  The opening shape of the through hole 113a is typically circular, but is not limited thereto, and the shape may be any shape such as a rectangular shape, a triangular shape, or an elliptical shape. The number of through holes 113a provided in the rim 113 is 24 in FIG. 2, but is not limited thereto, and may be one or two or more. In this case, it is preferable that the through holes 113a are evenly arranged on the rim 113 in the circumferential direction.

  The first groove 113b is continuously provided on the circumferential surface 110s of the roller body 110 along the circumferential direction. The cross-sectional shape in the direction of the central axis C of the first groove 113b is V-shaped as shown in FIGS. The groove width D1 of the first groove 113b is not particularly limited, but is about several millimeters, for example.

  The rim 113 has a plurality of holes H2. The plurality of holes H2 are provided in the bottom 113c of the first groove 113b with a predetermined interval in the circumferential direction. The hole H2 faces the through hole 113a in the radial direction. Accordingly, the bottom 113c of the first groove 113b communicates with the through hole 113a through the hole H2.

  The opening shape of the hole H2 is typically circular, but is not limited thereto, and the shape may be any shape such as a rectangular shape, a triangular shape, or an elliptical shape.

  The elastic member 120 is an annular body configured in an annular shape around the central axis C. The inner diameter and outer diameter of the elastic member 120 are not particularly limited, but are about several hundred mm, for example. Further, the thickness of the elastic member 120 in the central axis C direction is not particularly limited, and is about several mm, for example.

  The elastic member 120 has a second groove 120a provided concentrically with the first groove 113b. The second groove 120a accommodates and holds the wire 3. The second groove 120a is continuously provided on the peripheral surface 120s of the elastic member 120 along the circumferential direction.

  The second groove 120a faces the first groove 113b in the radial direction. The groove width D2 of the second groove 120a is not particularly limited, but is about several mm, for example. The above “concentric” means that the annular central axis of the first groove 113b and the annular central axis of the second groove 120a are the same axis (central axis C).

  The cross-sectional shape in the direction of the central axis C of the second groove 120a is V-shaped as shown in FIGS. With this configuration, the tensioned wire 3 is held by the elastic member 120 at a position near the bottom P of the second groove 120a. Thereby, as shown in FIG. 5, since the side wall (opening surface) of the 2nd groove | channel 120a always contact | abuts to the wire 3, it is suppressed that the wire 3 shifts | deviates to the central-axis C direction.

  That is, when the cross-sectional shape of the second groove 120a in the direction of the central axis C is V-shaped, when the wire 3 is held by the elastic member 120, the play allowing the deviation of the wire 3 in the central axis C direction is allowed. Therefore, the holding force for holding the wire 3 at a predetermined location is improved.

  Further, the groove width D2 of the second groove 120a is smaller than the groove width D1 of the first groove 113b. Further, the groove angle A2 of the second groove 120a is smaller than the groove angle A1 of the first groove 113b. The groove angles A1 and A2 are preferably 60 ° or more and 90 ° or less, for example.

  Furthermore, it is preferable that the extension line L of the side wall (opening surface) of the second groove 120a enters at least the inside of the first groove 113b. In this case, the load applied to the second groove 120a radially inward from the wire 3 is in the groove of the first groove 113b via the elastic member 120 located in the direction of the central axis C of the second groove 120a. Propagate to. Thereby, the said load is supported by the side wall (opening surface) of the 1st groove | channel 113b. Therefore, for example, when the wire 3 shakes to one side along the central axis C direction, this shake is suppressed by the side wall (opening surface) of the first groove 113b located on the one direction side via the elastic member 120. Is done. Therefore, the second groove 120a can hold the wire 3 more stably. In addition, it is more preferable that the bottom portion P of the second groove 120a is disposed on the radially inner side with respect to the outer peripheral end S1 of the roller body 110 as shown in FIG.

  The elastic member 120 is provided on the peripheral end portion 110a of the roller body 110 by, for example, a casting method that obtains a molded product by thermally curing a liquid resin poured into a silicon mold. Accordingly, the elastic member 120 of the present embodiment includes a first embedded portion 120b embedded in the first groove 113b and a second embedded portion 120c embedded in the through hole 113a. It becomes. Needless to say, the elastic material 120 may be provided on the peripheral end portion 110a of the roller main body 110 by a method other than the casting forming method.

  The first embedded portion 120b is an elastic member 120 filled in the first groove 113b. Similarly, the 2nd embedding part 120c is the elastic member 120 with which the inside of the through-hole 113a was filled.

  In addition, when the elastic member 120 is formed by a casting method, an adhesion step is not required when the elastic member 120 is provided on the peripheral end portion 110a of the roller body 110. That is, the roller body 110 and the elastic member 120 are integrated without being bonded.

  The material constituting the elastic member 120 is not particularly limited as long as it is an elastomer having wear resistance with respect to the wire 3. For example, ester urethane resin, high-density polyethylene, high-molecular polyethylene resin, and rubber can be employed. Typically, ester urethane resins are employed.

<Action>
As shown in FIGS. 4 to 6, the guide roller 100 of the present embodiment includes a first embedded portion 120 b in which an elastic member 120 is embedded in the first groove 113 b. With this configuration, even if the first embedded portion 120b is pressed in the direction of the central axis C due to the load being applied to the wire 3 in the direction of the central axis C, the first embedded portion 120b becomes the first groove. Hang on the side wall (opening surface) of 113b. Thereby, even if blurring occurs in the conveyed wire 3, the elastic member 120 that holds the wire 3 is hooked on the side wall (opening surface) of the first groove 113b. It is possible to prevent a shake load from being repeatedly applied to a latching portion (for example, the second embedded portion 120c) that is latched on the surface. Accordingly, the latching portion is prevented from being broken and the elastic member 120 is prevented from being detached from the roller body 110.

  Further, since the guide roller 100 has the first embedded portion 120 b, the elastic member 120 is firmly hooked on the roller body 110. This eliminates the need to bond the elastic member 120 to the roller body 110.

  Further, as shown in FIGS. 4 to 6, the guide roller 100 includes a second embedded portion 120 c in which the elastic member 120 is embedded in the through hole 113 a. Thereby, when the guide roller 100 rotates, the elastic member 120 provided on the peripheral end portion 110a of the roller main body 110 is hooked on the inner wall surface of the through hole 113a, so that the elastic member 120 moves outward from the roller main body 110 in the radial direction. It will not leave. In other words, the elastic member 120 is prevented from floating when the guide roller 100 is rotated.

  In particular, in the present embodiment, the bottom 113c of the first groove 113b communicates with the through hole 113a through the hole H2. Thereby, not only the elastic member 120 is hooked on the inner wall surface of the through hole 113a, but also the first embedded portion 120b is connected to the second embedded portion 120c through the hole H2. Therefore, since the elastic member 120 is firmly fixed to the peripheral end portion 110a of the roller body 110, it is effective that the elastic member 120 is detached from the roller body 110 radially outward even when the guide roller 100 rotates at high speed. To be prevented.

Further, as shown in FIG. 4, the groove angle A1 of the first groove 113b is larger than the groove angle A2 of the second groove 120a. Thereby, the load applied to the second groove 120a from the wire 3 toward the radially inner side propagates to the wide side wall (opening surface) of the first groove 113b opened to the radially outer side via the elastic member 120. To do. Therefore, even if a load is applied to the elastic member 120 along the central axis C direction from the wire 3 held in the second groove 120a, the load is applied to the wire 3 and the central axis C direction via the elastic member 120. Is propagated to the side wall (opening surface) of the first groove 113b opposite to the first groove 113b. As a result, the elastic member 120 is prevented from being subjected to an excessive load on the engaging portion (for example, the second embedded portion 120c) where the elastic member 120 is engaged with the roller body 110, so that the engaging portion is prevented from being broken. The detachment from the main body 110 is prevented.
Further, since the groove angle A1 of the first groove 113b is larger than the groove angle A2 of the second groove 120a, the elastic member 120 facing the side wall (opening surface) of the first groove 113b in the central axis C direction. Thickness D can be sufficiently secured.

  Furthermore, the bottom P of the second groove 120a is disposed radially inward from the outer peripheral end S1 of the roller body 110, as shown in FIG. That is, a part of the second groove 120a enters the first groove 113b.

  Accordingly, the bottom P of the second groove 120a is configured to face the side wall (opening surface) of the first groove 113b in the direction of the central axis C via the elastic member 120. Therefore, even if a load is applied to the wire 3 held by the elastic member 120 in the direction of the central axis C, a drag corresponding to the load is applied from the side wall (opening surface) of the first groove 113b via the elastic member 120. Added to the wire 3.

  Therefore, even if a load is applied to the wire 3 in the direction of the central axis C, the load is canceled by the drag from the side wall (opening surface) of the first groove 113b. Is prevented. Thereby, the elastic member is prevented from being broken, and the elastic member 120 is prevented from being detached from the roller body 110.

(Application example 2)
FIG. 7 is an enlarged cross-sectional view showing another configuration of the guide roller 100 of the present invention, and is an enlarged cross-sectional view around the peripheral end portion 110a of the roller body 110. FIG.

  In the present embodiment, as shown in FIG. 7, the first and second grooves 113b and 120a in the central axis C direction have a V-shaped cross section, and the first embedded portion 120b and the second embedded portion 120c. And may be independent of each other without being connected.

  In this case, the groove angle A1 of the first groove 113b is larger than the groove angle A2 of the second groove 120a, and the bottom P of the second groove 120a is disposed radially inward from the outer peripheral end S1 of the roller body 110. Is more preferable. Thereby, the same effect (paragraphs [0062] to [0065]) as in application example 1 is obtained.

2. Second Embodiment FIG. 8 is an enlarged cross-sectional view of a guide roller 100 according to a second embodiment of the present invention, and is an enlarged view of the periphery of a peripheral end portion 110a of a roller body 110. Hereinafter, the same reference numerals are given to the same configurations as those in the first embodiment, and the description thereof is omitted.

  In the second embodiment, the cross-sectional shape of the first groove 113b in the direction of the central axis C is U-shaped. In this case, the groove width D3 of the first groove 113b is not particularly limited, but is, for example, about several mm.

  Further, the groove width D3 of the first groove 113b is larger than the groove width D2 of the second groove 120a. Furthermore, it is preferable that the bottom portion P of the second groove 120a is disposed on the radially inner side with respect to the outer peripheral end S1 of the roller body 110, as shown in FIG.

  With this configuration, the thickness D of the elastic member 120 facing the side wall (opening surface) of the first groove 113b in the direction of the central axis C is sufficiently ensured, and a part of the second groove 120a becomes the first groove 113b. As a result, the same effects (paragraphs [0062] to [0065]) as in the first embodiment are obtained.

  Further, since the cross-sectional shape of the first groove 113b in the central axis C direction is U-shaped, the first groove 113b is interposed between the bottom of the second groove 120a to which the load of the wire 3 is applied and the first groove 113b. The volume of the elastic member 120 can be increased. Therefore, it is possible to employ a highly flexible material for the elastic member 120. Therefore, by holding the wire 3 with the highly flexible elastic member 120, the flexibility of the wire 3 with respect to the blur is increased, so that the blur of the wire 3 can be effectively suppressed.

3. Third Embodiment FIG. 9 is an enlarged cross-sectional view of a guide roller 100 according to a third embodiment of the present invention, and is an enlarged view of the periphery of a peripheral end portion 110a of a roller body 110. Hereinafter, the same reference numerals are given to the same configurations as those in the first embodiment, and the description thereof is omitted.

  In the third embodiment, the rim 113 has a plurality of communication holes H3. The plurality of communication holes H3 are provided in the rim 113 at predetermined intervals in the circumferential direction. The communication hole H3 is a through hole that is provided in the rim 113 along the radial direction and communicates the bottom 113c of the first groove 113b with the through hole 113a.

  In the third embodiment, the bottom 113c of the first groove 113b communicates with the through hole 113a via the communication hole H3. Thereby, the 1st embedding part 120b and the 2nd embedding part 120c can be connected irrespective of the dimension of the diameter direction of communicating hole H3. That is, since the first embedded portion 120b embedded in the first groove 113b and the second embedded portion 120c embedded in the through hole 113a are separated, the groove angle A1 of the first groove 113b. In addition, the degree of freedom in setting can be improved, and the communication hole H3 can be provided in the roller body 110 (rim 113) at an appropriate position according to the shape of the roller body 110.

  The opening shape of the communication hole H3 is typically a circular shape, but is not limited to this, and may be any shape, for example, a rectangular shape, a triangular shape, an elliptical shape, or the like.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, Of course, a various change can be added. 10 and 11 are enlarged sectional views of the guide roller 100 according to a modification of the present invention, and are enlarged views showing the vicinity of the peripheral end portion 110a of the roller body 110. FIG.

  In the above embodiment, the guide roller 100 is provided with the first and second grooves 113b and 120a one by one. However, the present invention is not limited to this, and the second groove 120a extends along the central axis C direction as shown in FIG. A plurality of them may be provided. Or as shown in FIG. 11, both the 1st groove | channel 113b and the 2nd groove | channel 120a may be provided with two or more along the central-axis C direction.

  In addition, the guide roller 100 of the above embodiment functions as a roller that guides the conveyance of the wire 3, but is not limited thereto, and may be used as the main roller 4 a by overlapping a plurality in the direction of the central axis C.

  Furthermore, the guide roller 100 of the present invention is typically applied to a wire saw, but is not limited thereto. The guide roller 100 may be applied to an apparatus other than a wire saw and its use is not limited.

DESCRIPTION OF SYMBOLS 100 ... Guide roller 110 ... Roller body 113a ... Through-hole 113b ... First groove 120 ... Elastic member 120a ... Second groove 120b ... First embedding part 120c ... 2 embedded portions H3... Communication hole S1.

Claims (7)

In the guide roller that guides the conveyance of the wire,
A roller body having a plurality of through holes provided along the rotation axis direction of the guide roller at intervals in the circumferential direction, and a first groove provided along the circumferential direction on the circumferential surface;
A wear-resistant elastic member provided at a peripheral end portion of the roller body, the wire holding second groove provided concentrically with the first groove, and the inside of the first groove. A guide roller comprising: an elastic member having a first embedded portion to be embedded and a second embedded portion embedded in the through hole. The guide roller according to claim 1,
A cross-sectional shape of the second groove in the rotation axis direction of the roller body is a V-shaped guide roller. The guide roller according to claim 1 or 2,
The cross-sectional shape of the first and second grooves in the rotation axis direction of the roller body is V-shaped,
A guide roller in which a groove angle of the first groove is larger than a groove angle of the second groove. The guide roller according to claim 1 or 2,
A cross-sectional shape of the first groove in the rotation axis direction of the roller body is a U-shaped guide roller. A guide roller according to any one of claims 1 to 4,
The bottom part of the said 2nd groove | channel is a guide roller arrange | positioned in the radial inside rather than the outer peripheral end in the radial direction of the said roller main body. A guide roller according to any one of claims 1 to 5,
The bottom of the first groove is a guide roller that communicates with the through hole. The guide roller according to any one of claims 1 to 6,
The roller body further includes a plurality of communication holes that connect the bottom of the first groove and the through hole,
The first embedding portion is a guide roller that is connected to the second embedding portion via the communication hole.

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