JP3701364B2 - Coating material peeling tool and coating material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to, for example, a coating material peeling tool for peeling a coating material provided so as to cover the outer peripheral surface of a copper tube from the copper tube, and a tangling prevention tool for the coating material attached to the coating material peeling tool. Is.
[0002]
[Prior art]
In general, for example, when hot water boiled in an outdoor water heater is supplied indoors, hot water is supplied from the water heater to the indoors through a cladding tube so that the hot water does not cool. This cladding tube is formed by providing a coating material having heat insulation on the outer peripheral surface of a copper tube or the like, and coating the copper tube with the coating material. Therefore, since the inside and the outside of the cladding tube are thermally insulated by the coating material, the hot water flowing through the inside of the cladding tube is difficult to cool. Also, when connecting a pair of cladding tubes, the coating material located at the ends of both cladding tubes is peeled from the copper tube using a coating material peeling tool, and the ends of the cladding tubes from which the coating material has been removed Are connected by a joint or the like.
[0003]
A main body of the covering material peeling tool is formed in a cylindrical shape, and a guide core formed in a smaller diameter than an inner diameter of the main body is provided inside the main body so as to extend in the axial direction of the main body. Further, the leading end portion of the guide core protrudes from the leading end portion of the main body, and a cutting blade for peeling the coating material of the cladding tube from the copper tube is provided at the leading end portion of the main body. In order to peel off the coating material positioned at the end of the cladding tube from the copper tube with the coating material peeling tool configured as described above, first, the tip end of the guide core is inserted from the end of the cladding tube into the inside of the copper tube. . Then, the cutting blade provided in the front-end | tip part of a main body contacts the coating | covering material located in the edge part of a cladding tube. In this state, when the main body is rotated so that the axis of the copper tube is centered, the cutting blade moves in the circumferential direction by rotating about the axis of the copper tube, and the end of the cladding tube is moved by the movement of the cutting blade. The covering material located in the part is peeled off from the copper tube.
[0004]
[Problems to be solved by the invention]
However, in the coating material peeling tool, the cutting material rotates about the axis of the copper tube and moves in the circumferential direction, whereby the coating material is peeled from the copper tube. Therefore, the covering material peeled off from the copper tube extends spirally around the axis of the copper tube and becomes entangled with the main body of the covering material peeling tool. And when the coating material which became spiral entangled with the main body of a coating material peeling tool, while the peeling operation of the coating material became difficult, there existed a problem that it became difficult to remove the entangled coating material from a main body.
[0005]
The present invention has been made to solve the above problems, and a first object thereof is to prevent the covering material peeled off from the pipe from being entangled with the body of the covering material peeling tool. .
[0006]
The second object is to ensure that the covering material peeled off from the tube can be pushed out toward the outside of the main body.
The third purpose is to allow the covering material to be pushed out of the main body when the pressing force by the covering material peeled off from the tube acts in the radial direction and the axial direction of the tube with respect to the pressing surface. It is in.
[0007]
The fourth purpose is to make it difficult to touch the cutting blade by hand.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, in the invention described in claim 1, in particular, the cutting blade is provided in a main body that rotates so that the axis of the pipe is the center, and the covering material is peeled off from the pipe by the cutting blade. And a cover for covering the cutting blade and the extrusion part, and the cover is provided with a window at a position corresponding to the extrusion part .
[0010]
In the invention 請 Motomeko 2, wherein the mounting body is the cutting edge for peeling the covering material that covers the outer peripheral surface of the pipe from the tube attached to the body of the dressing breaking tool provided, disposed on the mounting body, the coating material is peeled from the tube by the cutting edge when the cutting edge was shown by Uni axis of rotation ing the center of the tube body of the coating material peeling tool in contact with the coating material of the tube to the outer side of the tube An extrusion unit for extruding and a cover provided on the attachment body, covering the cutting blade and the extrusion unit, and provided with a window at a position corresponding to the extrusion unit .
[0014]
That is, according to the first aspect of the present invention, when the main body is rotated so that the axis of the tube is centered in a state where the cutting blade is in contact with the coating material of the tube, the cutting blade rotates about the axis of the tube. By doing so, it moves in the circumferential direction, and the covering material is peeled off from the pipe. The covering material peeled off from the tube is pushed out toward the outside of the main body by an extruding portion provided in the main body. Moreover, it can prevent reliably touching a cutting blade by hand.
[0018]
In the invention according to claim 5, the attachment body of the covering material entanglement prevention tool is attached to the main body of the covering material peeling tool. In a state where the cutting edge of the dressing breaking tool is in contact with the coating material of the tube and is urchin rotation by axes ing the center of the tube body by cutting edge rotates about the axis of the tube It moves in the circumferential direction and the covering material is peeled off from the tube. The covering material peeled off from the pipe by the cutting blade is pushed out toward the outer side of the main body by an extruding portion provided on the attachment body. Moreover, it can prevent reliably touching a cutting blade by hand.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
(First Reference Example )
Hereinafter, a first reference example embodying the present invention will be described with reference to FIGS.
[0023]
As shown in FIG. 1, the cladding tube 11 is formed by providing a heat-insulating coating material 13 on the outer circumferential surface of a copper tube 12 as a tube, and the coating material 13 covers the outer circumferential surface of the copper tube 12. . The coating material peeling tool 14 of the first reference example is used to peel the coating material 13 of the cladding tube 11 from the copper tube 12.
[0024]
The covering material peeling tool 14 includes a main body 15 formed in a cylindrical shape. The main body 15 is open at the front end and closed at the base end, and the mounting shaft 16 protrudes from the base end surface of the main body 15 and extends in the axial direction of the main body 15. A handle 17 for the operator to hold the covering material peeling tool 14 by hand is provided at the base end of the main body 15. The handle 17 includes a grip portion 18 that is formed in a circular shape so that an operator can hold it with a hand, and a columnar attachment portion 19 that protrudes from the center of the grip portion 18.
[0025]
An attachment recess 20 having a shape corresponding to the attachment shaft 16 of the main body 15 is provided at the distal end of the attachment portion 19 so as to extend in the axial direction of the main body 15, and the attachment shaft 16 is disposed in the attachment recess 20. Has been inserted. Then, a screw 19a is screwed into the mounting recess 20 from the outer peripheral surface of the mounting portion 19, and the handle 17 is detached from the main body 15 by fixing the mounting shaft 16 in the mounting recess 20 with the screw 19a. It is attached as possible.
[0026]
A cutting edge 21 for peeling the covering material 13 in the cladding tube 11 from the outer peripheral surface of the copper tube 12 is provided at the tip of the main body 15. A guide core 22 formed in a round bar shape smaller in diameter than the inner diameter of the copper tube 12 is inserted into the main body 15, and the guide core 22 extends in the axial direction of the main body 15. A fixed shaft 23 having a smaller diameter than the guide core 22 is provided at the base end portion of the guide core 22. A fixed recess 24 that opens toward the inside of the main body 15 is provided at the base end of the main body 15. The fixed recess 24 is formed in a shape corresponding to the fixed shaft 23, and the fixed shaft 23 is inserted into the fixed recess 24.
[0027]
Then, a screw 25 is screwed into the fixed recess 24 from the outer peripheral surface of the base end portion of the main body 15, and the distal end portion of the screw 25 is pressed against the fixed shaft 23. 24 is fixed inside. In a state where the fixed shaft 23 is fixed in the fixed recess 24, a gap 26 is formed between the outer peripheral surface of the guide core 23 and the inner peripheral surface of the main body 15. The width of the gap 26 is larger than the thickness width of the copper tube 12 in the cladding tube 11. Further, the distal end portion of the guide core 23 protrudes from the distal end portion of the main body 15 and is reduced in diameter so that the tip becomes narrower.
[0028]
An anti-tangler 27 is attached to the tip of the main body 15. As shown in FIG. 2, the entanglement preventing device 27 includes an attachment body 28 formed in a ring shape, and the attachment body 28 is provided with a through hole 29. The axis of the through hole 29 is eccentric with respect to the axis of the attachment body 28. A groove 30 shown in FIG. 3 is formed in the outer peripheral surface of the attachment body 28, and the groove 30 extends in the same direction as the axis of the through hole 29 so as to connect the front and back surfaces 28 a and 28 b of the attachment body 28. Further, the groove 30 is formed in a thick portion 28c between the outer peripheral surface of the mounting body 28 and the inner peripheral surface of the through-hole 29 so that the thickness therebetween is thicker than other portions.
[0029]
The mounting body 28 is provided with first and second screw holes 31 and 32 so as to extend in the radial direction of the mounting body 28. The first screw hole 31 is located between the inner surface of the groove 30 and the outer peripheral surface of the mounting body 28, and the second screw hole 32 is between the outer peripheral surface of the mounting body 28 and the inner peripheral surface of the through hole 29. Is located. An extruded piece 33 is fitted in the groove 30, and the extruded piece 33 is fixed in the groove 30 by a screw 31 a screwed into the first screw hole 31. As shown in FIG. 2, the extruded piece 33 extends in the axial direction of the attachment body 28, and protrudes upward from the surface 28 a of the attachment body 28 in FIG. 2.
[0030]
In the first reference example , the extruded portion X is constituted by the extruded piece 33 and the thick portion 28 c of the attachment body 28. Further, the pressing surface F is constituted by the side surface 33 a in the thickness direction of the extruded piece 33 and the surface 28 a of the thick portion 28 c of the attachment body 28.
[0031]
The entanglement prevention tool 27 configured as described above is configured to screw a screw (not shown) into the second screw hole 32 of the attachment body 28 in a state where the main body 15 of the covering material peeling tool 14 penetrates the through hole 29. Thus, as shown in FIG. The entanglement preventing tool 27 is attached to the main body 15 such that the pushing portion X is located on the rear side of the cutting edge 21 in the arrow direction of FIG.
[0032]
The extruding part X in the anti-tangler 27 attached to the main body 15 is located on the discharge track L indicated by the one-dot chain line in FIG. 1 of the covering material 13 peeled from the copper tube 12, and the pressing surface F of the extruding part X is It intersects with the discharge trajectory L.
[0033]
Further, in a state where the entanglement preventing device 27 is attached to the main body 15, the pushing portion X protrudes outward from the main body 15. Further, the side surface 33 a of the extruded piece 33 is parallel to the axis of the main body 15, and the surface 28 a of the attachment body 28 is orthogonal to the axis of the main body 15.
[0034]
Next, the operation of the covering material peeling tool 14 and the entanglement prevention tool 27 will be described.
In order to peel the covering material 13 located at the end of the cladding tube 11 from the copper tube 12, as shown in FIG. 4, the tip of the guide core 22 in the coating material peeling tool 14 is moved from the end of the cladding tube 11 to the copper tube. 12 is inserted. Then, the cutting edge 21 of the coating material peeling tool 14 contacts the end surface of the coating material 13 in the cladding tube 11. In this state, the operator holds the gripping portion 18 of the handle 17 in the covering material peeling tool 14 with his hand, and rotates the handle 17 in the direction of the arrow in FIG. 4 so that the axis of the main body 15 is centered. Then, the main body 15 of the coating material peeling tool 14 rotates with the rotation of the handle 17, and the cutting blade 21 rotates around the axis of the main body 15 and moves in the circumferential direction of the copper tube 12.
[0035]
When the cutting blade 21 moves in the circumferential direction of the copper tube 12 in contact with the end surface of the covering material 13, the covering material 13 covering the end portion of the outer peripheral surface of the copper tube 12 is peeled off from the copper tube 12 by the cutting blade 21. . The covering material 13 peeled off from the copper tube 12 extends in the direction opposite to the arrow in FIG. 4 along the discharge track L indicated by the one-dot chain line in FIG. Then, the distal end portion of the covering material 13 peeled off from the copper tube 12 is reliably pressed against the push-out portion X of the entanglement preventing device 27 located behind the cutting edge 21 in the rotation direction of the main body 15.
[0036]
When the pressing force by the covering material 13 peeled off from the copper tube 12 acts in the radial direction of the copper tube 12 with respect to the extruded portion X, the covering material 13 is outside the main body 15 by the side surface 33a of the extruded piece 33. It is pushed out towards. Further, when the pressing force by the covering material 13 peeled off from the copper tube 12 acts in the axial direction of the copper tube 12 with respect to the extruded portion X, the covering material 13 is outside the main body 15 by the surface 28a of the mounting body 28. Pushed out. Therefore, it becomes possible to prevent the covering material 13 peeled off from the copper tube 12 from being entangled with the main body.
[0037]
As shown in FIG. 5, when the covering material 13 is sequentially peeled from the copper tube 12, the covering material 13 extends spirally on the outer side of the main body 15. Then, after the covering material 13 is peeled from the copper tube 12 by a predetermined length in the axial direction of the covering tube 11, the spiral covering material 13 peeled off from the copper tube 12 is easily cut outside the main body 15. The
[0038]
The first reference example detailed above has the effects shown in the following (a) to (e).
(A) The entanglement prevention tool 27 is attached to the main body 15 of the covering material peeling tool 14, and the covering material 13 peeled off from the copper tube 12 by the cutting blade 21 of the covering material peeling tool 14 is removed by the extrusion portion X of the tangling prevention tool 27. Extrusion to the outside of the main body 15 was made. Therefore, the covering material 13 peeled off from the copper tube 12 can be prevented from being entangled with the main body 15.
[0039]
(B) Since the extruded portion X is located on the discharge track L of the covering material 13 peeled off from the copper tube 12 and protrudes outward from the main body 15, the covering material 13 peeled off from the copper tube 12. Is reliably pressed against the extrusion part X. Therefore, when the covering material 13 peeled off from the copper tube 12 is pressed against the extrusion portion X, the covering material 13 can be reliably pushed out of the main body 15.
[0040]
(C) Since the pressing surface F of the extruding part X intersects with the discharge track L of the covering material 13, the pressing force by the covering material 13 peeled off from the copper pipe 12 is Even if it works in the axial direction, the covering material 13 can be pushed out to the outside of the main body 15 by the pressing surface F of the extruded portion X.
[0041]
(D) The side surface 33 a of the extruded piece 33 is made parallel to the axis of the copper tube 12, and the surface 28 a of the attachment body 28 is orthogonal to the axis of the copper tube 12. Therefore, even if the pressing force by the covering material 13 peeled off from the copper tube 12 works in the radial direction and the axial direction of the copper tube 12 with respect to the extruded portion X, the covering material 13 is attached to the side surface 33a of the extruded piece 33 and the attachment body. The surface 28a of the 28 can be reliably and easily pushed to the outside of the main body 15.
[0042]
(E) The entanglement prevention tool 27 is configured by providing an extruded portion X on an attachment body 28 that can be attached to and detached from the covering material peeling tool 14. Therefore, by attaching the entanglement prevention tool 27 to the ready-made coating material peeling tool, the extrusion portion X can be easily provided in the coating material peeling tool, and the coating material 13 is caught on the main body of the coating material peeling tool. Can not be.
[0043]
(Second reference example )
Next, a second reference example of the present invention will be described with reference to FIGS. Note that the first reference example, the same parts in the second reference example, omit the detailed description of those first reference example of the same number.
[0044]
As shown in FIGS. 6 and 7, in the second reference example , only the extruded piece 33 of the entanglement preventing device 27 is different from the first reference example . That is, the extruded piece 33 of the second reference example protrudes so that its tip protrudes from the tip of the main body 15, and is bent by about 90 ° in the direction opposite to the arrow in FIG. The cutting blade 21 of the covering material peeling tool 14 is positioned so as to correspond to the longitudinal center portion of the extruded piece 33.
[0045]
When configured in this way, in addition to the effects of the first reference example , the following effects (f) are obtained.
(F) In the direction of the arrow in FIG. 6, since the cutting edge 21 is hidden by the extruded piece 33, when the operator tries to touch the cutting edge 21 by hand, the hand touches the cutting edge 21 by the extruded piece 33. That is disturbing. Therefore, it becomes difficult for the operator to touch the cutting blade 21 with his / her hand.
[0046]
( This embodiment)
The following describes the present embodiment of the present invention according to FIGS. 8 to 10. It should be noted that the first and second reference examples and the same parts in the present embodiment to omit the detailed description of those first and second reference examples and the same reference numerals.
[0047]
As shown in FIGS. 8 and 9, the entanglement preventing device 27 of this embodiment includes a cover 34 formed in a cylindrical shape, and the attachment body 28 is provided at one end of the cover 34. Further, the extruded piece 33 protrudes from the surface 28 a of the attachment body 28 located inside the cover 34. The cover 34 and the attachment body 28 are integrally formed, and the extruded piece 33 is integrally formed with the cover 34 and the attachment body 28.
[0048]
When the entanglement prevention tool 27 is attached to the main body 15 of the covering material peeling tool 14, the cover 34 shields the periphery of the cutting blade 21 from the outside of the main body 15. Further, a window 35 is provided in a portion of the cover 34 positioned in front of the extruded piece 33 in the direction of the arrow in FIG. As shown in FIG. 10, the covering material 13 peeled off from the copper tube 12 by the cutting blade 21 is pushed out of the main body 15 through the window 35 by the pushing portion X.
[0049]
When configured in this manner, in addition to the effects of the first and second reference examples , the following effects (g) and (h) are obtained.
(G) Since the periphery of the cutting blade 14 of the covering material peeling tool 14 is shielded from the outer side of the main body 15 by the cover 34 provided on the entanglement prevention tool 27, the operator manually holds the cutting blade 21. It is possible to reliably prevent touching.
[0050]
(H) The cover 34 is provided on an anti-tangler 27 that can be attached to and detached from the covering material peeling tool 14. Therefore, the cover 34 can be easily provided on the covering material peeling tool by attaching the entanglement prevention tool 27 to the ready-made covering material peeling tool.
[0051]
It should be noted that the first and second reference examples and the present embodiment can be embodied with the following modifications , for example.
(1) In the first and second reference examples and this embodiment, the entanglement prevention tool 27 may be integrally formed with the main body 15. In this case, the trouble of attaching the entanglement prevention tool 27 to the main body 15 can be saved.
[0052]
(2) In the first and second reference examples, in this embodiment, if the covering material 13 peeled off from the copper tube 12 can be pushed out to the outside of the main body 15, the shape of the extruded portion X of the entanglement preventing device 27 is changed. You may change suitably. For example, on the discharge track L in FIG. 1 in the entanglement prevention tool 27, a cylindrical push-out portion extending along the discharge track L may be provided, and the inner surface of the push-out portion may be used as a pressing surface.
[0053]
(3) In the first and second reference examples and the present embodiment, the pressing surface F of the extruded portion X is orthogonal to the side surface 33a of the extruded piece 33 parallel to the axis of the copper tube 12 and the axis of the copper tube 12. The pressing surface F may be formed in, for example, a flat shape or an arc shape.
[0054]
(4) In the first and second reference examples, in this embodiment, if the entanglement prevention device 27 can be reliably attached to the covering material peeling tool 14, the attachment structure of the entanglement prevention device 27 to the covering material separation tool 14 May be changed as appropriate.
[0055]
(5) In the first and second reference examples , the extruded piece 33 may be integrally formed with the attachment body 28. In this case, the trouble of attaching the extruded piece 33 to the attachment body 28 can be saved.
[0056]
(6) In the present embodiment, the copper pipe 12 is exemplified as the pipe, but a pipe made of other materials such as steel and aluminum may be used instead.
(7) In the present embodiment, the copper tube 12 is covered with the covering material 13 having heat insulating properties, but the copper tube 12 may be covered with other covering materials not having heat insulating properties.
[0057]
(8) In this embodiment, the handle 17 is attached to the main body 15, and the main body 15 is rotated by holding the grip portion 18 of the handle 17 by hand. Instead of the handle 17, for example, a ratchet tool is used. It may be used to rotate the main body 15.
[0058]
(9) In the present embodiment, the main body 15 is manually rotated, but the main body may be automatically rotated using, for example, an electric motor.
Next, the technical idea is Ru can be grasped from the above embodiment will be described below together with its effects.
[0059]
(B) In the Kutsugaezai breaking tool, the pressing surface and the first surface to be parallel with the axis of the tube (side 33a), and is configured from a second surface orthogonal to the axis of the tube (surface 28a) Coating material peeling tool. In this case, when the pressing force by the covering material peeled off from the tube acts in the radial direction and the axial direction of the tube with respect to the pressing surface, the covering material can be surely and easily pushed out to the outside of the main body.
[0060]
(B) In the Kutsugaezai breaking tool, the outer side than the cutting edge of the body, covering material peeling tool cover so as to cover the cutting edge is provided. In this case, it is possible to reliably prevent the cutting blade from being touched by hand.
[0061]
(C) In the Kutsugaezai breaking tool, extrusion portion covering material breaking tool that is integrally formed with respect to the body. In this case, the trouble of attaching the extrusion portion to the coating material peeling tool can be saved.
[0062]
(D) In the Kutsugaezai breaking tool, extrusion portion covering material breaking tool provided in the preventer entangled detachable from the main body. In this case, an extrusion part can be easily provided with respect to a ready-made coating | covering material peeling tool.
[0063]
(E) The coating material peeling tool according to (d) above, wherein the entanglement prevention tool is provided with the cover described in (b) above. In this case, it is possible to easily provide a cover for the ready-made coating material peeling tool.
[0064]
(F) In the entanglement preventing device of the Kutsugaezai, pressing surface to the first surface to be parallel with the axis of the tube (side 33a), it is constructed from a second surface orthogonal to the axis of the tube (surface 28a) Prevents tangling of covering material. In this case, when the pressing force by the covering material peeled off from the tube acts in the radial direction and the axial direction of the tube with respect to the pressing surface, the covering material can be surely and easily pushed out to the outside of the main body.
[0066]
【The invention's effect】
In the first aspect of the invention, since the covering material peeled off from the pipe is pushed out toward the outside of the main body by the pushing portion, the covering material can be prevented from being entangled with the main body of the covering material peeling tool.
[0070]
In the invention according to claim 2 , since the covering material peeled off from the pipe by the cutting blade is pushed out to the outside of the main body by the pushing portion, the covering material peeled off from the pipe is entangled with the main body of the covering material peeling tool. Can be prevented.
[Brief description of the drawings]
FIG. 1 is a front view showing a coating material peeling tool of a first reference example .
FIG. 2 is a perspective view showing an anti-tangler.
FIG. 3 is a cross-sectional view showing an anti-tangler.
FIG. 4 is a front view showing a coating material peeling tool.
FIG. 5 is a front view showing a coating material peeling tool.
FIG. 6 is a front view showing a coating material peeling tool of a second reference example .
FIG. 7 is a perspective view showing an anti-tangler.
FIG. 8 is a front view showing the coating material peeling tool of the present embodiment.
FIG. 9 is a perspective view showing an anti-tangler.
FIG. 10 is a front view showing a coating material peeling tool.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 12 ... Copper pipe as a pipe | tube, 13 ... Coating | covering material, 14 ... Coating | covering material peeling tool, 15 ... Main body, 21 ... Cutting blade, 27 ... Tangle prevention tool, 28 ... Attachment body, F ... Pressing surface, L ... Discharge track | orbit, X: Extrusion part.

Claims (2)

A cutting edge (21) is provided so as to come into contact with the covering material (13) covering the outer peripheral surface of the pipe (12), and the cutting edge (21) is rotated so that the axis of the pipe (12) is centered. In the covering material peeling tool which is made to peel off the said covering material (13) from the pipe | tube (12),
The cutting blade (21) is provided in a main body (15) that rotates so that the axis of the tube (12) is centered, and the main body (15) is peeled off from the tube (12) by the cutting blade (21). An extruding part (X) for extruding the covering material (13) toward the outside of the main body (15) and a cover (34) for covering the cutting blade (21) and the extruding part (X) are provided. The cover (34) is a covering material peeling tool in which a window (35) is provided at a position corresponding to the extruded portion (X) . Attachment body attached to the main body (15) of the covering material peeling tool (14) provided with the cutting blade (21) for peeling the covering material (13) covering the outer peripheral surface of the tube (12) from the pipe (12). (28) and
The body (15) of the covering material peeling tool (14) is provided on the mounting body (28) and the cutting edge (21) is in contact with the covering material (13) of the pipe (12). An extruding part (X) for extruding the covering material (13) peeled off from the tube (12) by the cutting blade (21) when rotated so that the axis is centered, to the outside of the tube (12);
A cover (34) provided on the attachment body (28), covering the cutting blade (21) and the extrusion part (X) and having a window (35) at a position corresponding to the extrusion part (X);
An anti-tangler for covering materials provided with

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