WO2016135774A1

WO2016135774A1 - Polishing tool

Info

Publication number: WO2016135774A1
Application number: PCT/JP2015/000953
Authority: WO
Inventors: 和夫小柴
Original assignee: 和夫小柴; 小柴雄一
Priority date: 2015-02-25
Filing date: 2015-02-25
Publication date: 2016-09-01
Also published as: JP6214813B2; JPWO2016135774A1

Abstract

Provided is a polishing tool (10) which is used together with a belt-shaped polishing sheet (60) to polish the outer circumferential surface of a pipe (50) around which the polishing sheet is wound. The polishing tool is constituted by: a roller chain (12) that is detachably wound around the pipe (50); and a pair of guide devices (14) that are detachably attached to the roller chain (12) and that guide the travel of the polishing sheet (60). Each guide device (14) is constituted by: a base member (16) that sandwiches the roller chain (12) from the width direction thereof; and a roller member (18) which includes a shaft (18a) that is cantilever supported by the base member (16) so that the axis of the shaft is substantially orthogonal to the lengthwise direction of the roller chain (12), and which includes a guide roller (18b) that is rotatably attached to the shaft (18a).

Description

Polishing tool

The present invention relates to a polishing tool used when polishing the outer peripheral surface of a pipe.

Pipes having a circular or elliptical cross section are used in household equipment and factory equipment. Of these pipes, for example, in the case of a metal pipe, when high smoothness is required on the outer peripheral surface, when removing rust or residual paint, or when connecting metal pipes, a belt is placed around the metal pipe. One or more rolls of sandpaper or the like were wound, and each end in the longitudinal direction of the sandpaper gripped by an operator was alternately pulled to apply force, and the outer peripheral surface was polished. Further, for example, in the case of resin pipes such as polyvinyl chloride pipes, the same polishing finish is performed when paint on the outer peripheral surface is removed or when resin pipes are connected to each other.

In such an operation, the direction of applying force to the sandpaper is twisted slightly diagonally from the direction perpendicular to the axis of the pipe so that the belt-shaped sandpaper wound around the pipe does not rub and break during polishing. I have to do it. As a result, a uniform force could not be applied to the entire contact surface between the pipe and the sandpaper, and it was extremely difficult to uniformly polish both the circumferential direction and the axial direction of the outer periphery of the pipe. Such a problem is the same even when such polishing work is simply replaced with a machine from human power (for example, see Patent Document 1).

On the other hand, as described above, as a technique that can solve the problem that a uniform force cannot be applied to the entire contact surface between the pipe and the sandpaper, a cylinder that can be loosely fitted to the outer periphery of the pipe, and this cylinder A slit extending in the axial direction of the cylindrical body at at least two locations of the body, and sandpaper stored in a pair of holders is inserted into the slit while facing the polishing surface. An example of the polishing tool is a width that can be frictionally engaged, and the cylindrical body includes a joint that can be connected to a rotational drive source (see, for example, Patent Document 2).

However, there is a problem that such a tool cannot be used for polishing the outer peripheral surface of a pipe fixed in advance on the wall or ceiling where there is almost no space between the wall surface and the ceiling surface, or is difficult to use. There was.

JP-A-11-320374 Japanese Utility Model Publication No. 58-136246

Therefore, the main problem of the present invention is not only applicable to the polishing of the outer peripheral surface of a pipe that is fixed in advance to the wall or ceiling, but it is also possible to easily and efficiently polish the outer peripheral surface of such a pipe. It is providing the polishing tool which can be performed.

In order to achieve the above object, for example, as shown in FIG. 1 and FIG. 2, the present invention provides the above polishing when the outer peripheral surface of the pipe 50 is polished with a belt-like polishing sheet 60 wound around the pipe 50. The polishing tool 10 used with the sheet 60 was configured as follows.
That is, the outer link 12a and the inner link 12b are alternately combined and connected, the roller chain 12 is detachably wound around the pipe 50, the detachably attached to the roller chain 12, and the polishing sheet 60 And a set of guide devices 14 for guiding the traveling of the vehicle. The guide device 14 is cantilevered by the base member 16 so as to sandwich the roller chain 12 from its width direction and the base member 16 so that its axis is substantially orthogonal to the longitudinal direction of the roller chain 12. And a roller member 18 having a guide roller 18b rotatably attached to the shaft 18a.

The present invention has the following effects.
Since the set of guide devices 14 is attached to the roller chain 12 wound around the pipe 50, even if the pipe 50 is installed near the wall, a gap through which the roller chain 12 passes between the pipe 50 and the wall. If there is, it can be used by attaching the polishing tool 10.

In the present invention, the roller chain 12 is configured such that both ends in the axial direction of the pin 20 forming the outer link 12a protrude in the width direction of the roller chain 12, and on the base portion 16a of the base member 16. Of the pins 20, it is preferable to drill a plurality of pin insertion holes 22 into which projecting portions of at least two adjacent pins 20 are fitted.
In this case, positioning when attaching the base member 16 to the roller chain 12 can be facilitated, and the manner in which the base member 16 is attached to the roller chain 12 is uniquely determined regardless of where the roller chain 12 is attached. Can do.

Moreover, in this invention, it is preferable to make the outer edge shape of the base part 16a of the said base member 16 into a shape in alignment with the pipe 50 contact side outer edge of the said outer link 12a and / or the inner link 12b.
In this case, the guide device 14 can be firmly fixed to the pipe 50 through the roller chain 12 without rattling.
The shape of the outer edge of the base portion 16a of the base member 16 is as described above, but the size of the outer edge is the same as the outer edge of the outer link 12a and / or inner link 12b on the pipe 50 contact side (that is, the same). Shape) or a size slightly projecting toward the pipe 50 (that is, a similar shape). By doing so, after the roller chain 12 on which the guide device 14 is mounted in advance is wound around the pipe 50 and then the roller chain 12 is tightened, the base member 16 is firmly pressed against the pipe 50 via the roller chain 12. It becomes like this. As a result, the guide device 14 is stabilized without rattling.

Furthermore, in the present invention, it is preferable to use a chain wrench or a chain clamp 24 part as the roller chain 12.
In this case, since a commercially available chain wrench or chain clamp 24 can be used as the roller chain 12, the polishing tool 10 can be configured simply and economically.

And it is preferable that the present invention adds a specific configuration described in an embodiment described later.

According to the present invention, there is provided a polishing tool that can be applied not only to the polishing of the outer peripheral surface of a pipe fixed in advance against a wall or ceiling, but also can easily and efficiently polish the outer peripheral surface of such a pipe. can do.

It is a perspective view which shows the tool for grinding | polishing of one Embodiment of this invention. It is A arrow directional view in FIG. 1, Comprising: It is the figure which expanded the principal part of the tool for grinding | polishing. It is explanatory drawing which shows the usage condition of the polishing tool of one Example of this invention, FIG. 3A shows the state of polishing work on the back side (wall side) of the pipe, FIG. 3B shows a polishing work state on the front side of the pipe. FIG. 5 is a diagram showing an abrasive sheet gripping tool used in an embodiment of the present invention. 4A is a perspective view showing an example, and FIG. 4B is a perspective view showing a main part of another example. Also, FIG. 4C is shown in FIG. FIG. 4B is a cross-sectional view taken along the line A-A ′ in 4A. It is explanatory drawing which shows the guide apparatus of other embodiment in this invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a perspective view of a polishing tool 10 according to the present invention, and FIG. 2 is a view taken in the direction of arrow A in FIG. 1 and is an enlarged view of a main part of the polishing tool 10. The polishing tool 10 of the present embodiment is a tool used together with the polishing sheet 60 when the outer peripheral surface of the pipe 50 is polished with a belt-like polishing sheet 60 wound around the pipe 50, and these drawings show Thus, the roller chain 12 and the pair of guide devices 14 are generally configured.
Here, examples of the polishing sheet 60 include sand paper and sand cloth, but the polishing sheet 60 is not limited to these examples, and the outer peripheral surface of the pipe 50 can be polished. Any sheet-like material may be used.
The pipe 50 may be made of any material such as a metal pipe or a resin pipe.

The roller chain 12 is a chain member in which outer links 12a and inner links 12b are alternately combined and connected. The roller chain 12 is wound around the pipe 50 and is detachably wound around the pipe 50. It is.
As shown in FIG. 1, the roller chain 12 of this embodiment is a component constituting a chain clamp 24, and both axial ends of the pins 20 forming the outer link 12 a protrude in the width direction of the roller chain 12. It has become.

Here, the length of the roller chain 12 is not particularly limited. For example, if the effective length (that is, the length of the portion that can be wound around the surface of the pipe 50) is 300 mm, the outer diameter 89 The pipe 50 up to 1 mm can be supported, and if the effective length is 600 mm, the pipe 50 up to an outer diameter of 165.2 mm can be handled. As described above, the longer the effective length of the roller chain 12, the wider the range of the pipe 50 that can be handled. However, the weight of the roller chain 12 becomes heavier, and the handling property becomes worse. Therefore, if it is desired to ensure the handling of the polishing tool 10, the outer diameter of the pipe 50 that can be handled is limited to some extent, but the effective length of the roller chain 12 is 1,000 mm or less. It is preferable to do this.

The guide device 14 is detachably attached to the roller chain 12 and is a device for guiding the traveling of the polishing sheet 60, and includes a base member 16 and a roller member 18.

The base member 16 is made of a metal material such as an aluminum alloy or stainless steel, and is a thin block member that sandwiches the roller chain 12 from its width direction. In the present embodiment, a case is shown in which the base member 16 is composed of a set of sections.
As shown in FIG. 2, the base member 16 has an outer edge shape of the base portion 16 a that is the same shape as the pipe 50 contact side outer edge of the outer link 12 a constituting the roller chain 12.
In addition, when the roller chain 12 is sandwiched between the pair of base members 16 in the base portion 16 a of the base member 16, a pair of protruding portions of the pins 20 are fitted at positions corresponding to the pins 20 of the roller chain 12. A pin insertion hole 22 is formed (both sections of the base member 16). Here, the pin insertion hole 22 may be in any form as long as it is “a plurality in which the protruding portions of at least two adjacent pins 20 are fitted”, and is not limited to the above. .

In addition, the code | symbol 17 in FIG. 2 is a spacer with which a roller chain 12 is clamped by a pair of base members 16. The spacer 17 is formed to have a thickness substantially equal to the width of the roller chain 12. When the base member 16 is attached to the roller chain 12, a bolt 26 is passed through a hole penetrating the pair of base members 16 and the spacer 17, and a wing nut 28 is screwed onto the bolt 26. Attachment of the base member 16 to the roller chain 12 is completed.

The roller member 18 is used to guide the traveling of the polishing sheet 60 around which the polishing sheet 60 is wound. The roller member 18 is cantilevered by the base member 16 so that its axis is substantially orthogonal to the longitudinal direction of the roller chain 12. And a guide roller 18b rotatably attached to the shaft 18a.

The roller member 18 of the present embodiment will be described in further detail. One end portion of the shaft 18a in the longitudinal direction is inserted into the shaft insertion hole 30 formed in the distal end side of the base member 16. A male screw is screwed on the surface of one end portion in the longitudinal direction of the shaft 18a, and a nut 32 is screwed to the male screw portion to support the shaft 18a on one of the sections of the base member 16 (see FIG. 2).

Further, the guide roller 18b rotatably attached to the shaft 18a is formed in a so-called crown shape in which the outer diameter is the largest at the central portion in the longitudinal direction and gradually decreases toward both ends (FIGS. 1 and 2). reference). By having such a crown shape, it is possible to effectively suppress the meandering of the polishing sheet 60 during the polishing of the pipe 50, and as a result, a uniform polishing force is given to the entire width direction of the polishing sheet 60. Will be able to. However, the outer diameter of the guide roller 18b is not limited to such a crown shape, and for example, a straight shape whose outer diameter is uniform over the entire longitudinal direction can be adopted.

When the polishing tool 10 of the present embodiment configured as described above is used to polish the outer peripheral surface of the end portion in the longitudinal direction of the pipe 50, first, the chain clamp 24 is placed at a position adjacent to the polishing portion. The roller chain 12 is wound and fixed so that the roller chain 12 does not rotate.
Then, as shown in FIGS. 1 and 2, a set of guide devices 14 is mounted at positions facing each other via the pipe 50 on the roller chain 12 wound around the pipe 50. Specifically, the wing nut 28 screwed into the bolt 26 is loosened to separate the pieces of the base member 16 facing each other. Next, the pin 20 is fitted into the pin insertion hole 22 of the base member 16 in a state where the roller member 18 is positioned so as to be disposed above the polishing portion. Thereafter, the wing nut 28 is tightened to complete the fixing of the guide device 14 to the roller chain 12.
As described above, when the outer edge of the base portion 16a of the base member 16 is larger than the outer edge of the outer link 12a and / or the inner link 12b on the pipe 50 contact side, the guide device 14 is mounted in advance. After the roller chain 12 is wound around the pipe 50, the roller chain 12 is preferably tightened.

Subsequently, after the attachment of the guide device 14 to the roller chain 12 is completed as described above, when polishing the wall surface side (back side) half of the pipe 50, FIG. As shown in FIG. 3A, the polishing surface 60a of the polishing sheet 60 is turned inward, the ends of the polishing sheet 60 wound from the front to the back are held, tension is applied to the polishing sheet 60, and the polishing sheet 60 is manually moved back and forth. Move to polish the pipe 50.
Note that FIG. 3A and FIG. Although a wall surface is not drawn on 3B, it is assumed that there is a wall surface on the right back side in these drawings.

Here, if the pipe 50 is polished while holding the end portion of the polishing sheet 60 in hand, the fingers may be damaged by the polishing surface 60 a of the polishing sheet 60. In such a case, FIG. 4A and FIG. It is preferable to use an abrasive sheet gripping tool 70 as shown in 4B.
The polishing sheet gripping tool 70 is, for example, FIG. Although the wedge mechanism 70a as shown by 4C grips the longitudinal end portion of the polishing sheet 60, the mechanism for gripping the longitudinal end portion of the polishing sheet 60 is not limited to this. In addition, the code | symbol 70b in a figure is a handle grasped when moving the polishing sheet 50. FIG.

When polishing the front half of the pipe 50, FIG. As shown in FIG. 3B, the polishing surface 60a of the polishing sheet 60 is directed outward (upward), and the upper guide device 14 → the pipe 50 → the lower guide device 14 are sequentially placed on the both ends of the polishing sheet 60 from the front side. Holding the tension on the polishing sheet 60, the polishing sheet 60 is manually moved back and forth to polish the pipe 50. Also in this case, the abrasive sheet gripping tool 70 described above can be used.

According to the polishing tool 10 of the present embodiment, the set of guide devices 14 is mounted on the roller chain 12 wound around the pipe 50, so that a plurality of external devices corresponding to the length of the roller chain 12 are provided. The pipe 50 having a diameter can be used as it is without any modification.

In the above-described embodiment, the case where the base member 16 constituting the guide device 14 is configured by a set of pieces is shown. However, the base member 16 is not limited to the above embodiment. For example, as shown in FIG. 5, the base member 16 includes a block 16 </ b> X formed in a predetermined shape that surrounds the surface of the roller chain 12 and one side surface in the width direction with the base portion 16 a, and The roller chain 12 may be sandwiched between the block 16X and the opening / closing piece 16Y hinged thereto. Here, the reference numeral 27 in FIG. 5 is for fixing the opening / closing piece 16Y to the block 16X so that the opening / closing piece 16Y holding the roller chain 12 in cooperation with the block 16X does not leave the holding state. It is a butterfly bolt. Moreover, about description of the code | symbol other than this in FIG. 5, description in the above-mentioned embodiment is used.

Furthermore, in the above-described embodiment, the case where the polishing sheet 60 is manually moved to polish the outer peripheral surface of the pipe 50 has been shown. However, the polishing sheet 60 is formed in a loop shape and is rotated by a power tool or the like. It may be connected to a driving source (not shown) and the pipe 50 may be polished using power.

And in the above-mentioned embodiment, although the case where the thing of the chain clamp 24 was used as the roller chain 12 was shown, the roller chain 12 is not limited to the aspect concerned, For example, the thing of a chain wrench or other tools is used. You can also.

10: polishing tool, 12: roller chain, 12a: outer link, 12b: inner link, 14: guide device, 16: base member, 16a: base, 18: roller member, 18a: shaft, 18b: guide roller, 20: Pin, 22: Pin insertion hole, 24: Chain clamp, 50: Pipe, 60: Polishing sheet.

Claims

A polishing tool used together with the polishing sheet (60) when polishing the outer peripheral surface of the pipe (50) with a belt-like polishing sheet (60) wound around the pipe (50),
A roller chain (12) in which outer links (12a) and inner links (12b) are alternately combined and connected, and are detachably wound around the pipe (50);
It is detachably attached to the roller chain (12), and comprises a set of guide devices (14) for guiding the traveling of the polishing sheet (60),
The guide device (14)
A base member (16) for clamping the roller chain (12) from the width direction;
A shaft (18a) cantilevered by the base member (16) so that its axis is substantially orthogonal to the longitudinal direction of the roller chain (12), and a guide rotatably attached to the shaft (18a) A roller member (18) having a roller (18b),
A polishing tool characterized by that.
The polishing tool according to claim 1, wherein
In the roller chain (12), both axial ends of the pin (20) forming the outer link (12a) protrude in the width direction of the roller chain (12),
The base portion (16a) of the base member (16) has a plurality of pin insertion holes (22) into which the protruding portions of at least two adjacent pins (20) of the pins (20) are fitted. A polishing tool characterized by comprising:
The polishing tool according to claim 1 or 2,
The outer edge shape of the base portion (16a) of the base member (16) is a shape along the outer edge of the outer link (12a) and / or the inner link (12b) on the pipe (50) contact side. Polishing tool.
The polishing tool according to any one of claims 1 to 3,
A polishing tool, wherein the roller chain (12) is a part of a chain wrench or a chain clamp (24).