JP2019098441A - Tool for surface peeling of resin coated pipe and peeling method - Google Patents

Abstract

To provide a surface peeling tool capable of easily peeling a surface of a resin coated pipe such as a gas pipe and a city water pipe.SOLUTION: In a tool 1 for surface peeling of a resin coated pipe 2 such as a gas pipe and a city water pipe, a tool body 4 is annularly formed so as to be inserted and removed to/from the resin coated pipe 2, an external tooth gear 5 of the annular tool body 4 is turnably mounted, a knife edge part 7 of a blade 6 for peeling is mounted on a resin coated part 3 of the resin coated pipe 2 in a contact state as a required scooping blade so as to spirally peel the resin coated part of the resin coated pipe 2. An operation handle 9 on which a ratchet 8 is arranged is swingably formed on the tool body 4, the ratchet 8 is detachably arranged on the external tooth gear 5 of the tool body 4, when the operation handle 9 is mounted on the tool body 4, and the ratchet 8 is engaged with the external tooth gear 5 of the tool body 4 to swing the operation handle 9 and allows the blade 6 for peeling to spirally peel the resin coated part of the resin coated pipe 2 inserted into an annular part of the tool body 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tool for surface peeling of resin-coated tubes such as gas pipes and water pipes, and a peeling method.

  In recent years, a resin-coated pipe whose surface is coated with a hard resin is used for gas pipes and water pipes, and in piping construction, the coating resin of the resin-coated pipe is peeled off for pipe connection. ing.

  And in the case of piping construction to the existing gas pipe, water pipe, etc., it was necessary to excavate a construction site buried in the ground and to carry out piping connection work in this excavated deep and narrow place. Conventionally, when performing piping work on the ground, it is known to peel off the coating layer of the outer covering tube using a lathe or a milling cutter as disclosed in JP-A-10-109202, etc. In the case of the exfoliation of the cladding tube, a large, expensive equipment is utilized, and it can not be used at all in the excavated hole of the drilling site, and an efficient, small, inexpensive tool is desired. It was rare.

  Therefore, although the inventor has developed a simple ratchet-type surface peeling tool as disclosed in Utility Model Registration No. 3200797, this tool can be applied exclusively to surface peeling of the end portion of a resin-coated tube. Met.

  However, in the industry, in addition to the connection of the end of the resin-coated tube, it is constructed with considerable demand that the pipe connection be branched and connected through the T-shaped pipe to the middle part. A surface peeling tool for intermediate connection has also been desired.

  Conventionally, with regard to peeling of the intermediate connection portion of such a resin-coated tube, a pair of semicircular arc-shaped divided members are attached to a predetermined position of the coated resin tube as in JP-A-2007-252837 and the circumferential direction is measured by a cutter tool. The cut was made by cutting with a hook cutter between the cut parts that were cut with this predetermined width, and the cover layer between the cuts was peeled off by hand, but at two points of the predetermined width of the coated resin tube It was time consuming to make a cut and manually peel off the coating layer in between.

  Therefore, as in the case of JP-A-2016-89949, the cutting blade is moved up and down with the depth adjustment screw to the holding member mounted in half on a resin-coated tube, and part of the intermediate connection part of the resin-coated tube is peeled off. It has been proposed. However, it is not easy to adjust the cutting blade by raising and lowering with a depth adjustment screw, and in order to peel the resin coating layer in a spiral shape, it is necessary to provide a helically extending external thread on the inner peripheral portion of the holding member. Since the resin-coated tube is not a perfect circle, the surface of the resin-coated layer is damaged at the male screw portion, or the cutting blade is caught and can be peeled off smoothly, which is not practical.

JP 10-109202 A Utility model registration 3200797 gazette JP 2007-252837 A JP, 2016-89949, A

  Therefore, the surface peeling of resin coated tubes such as gas pipes and water pipes can be easily peeled off the surface such as the intermediate connection part of resin coated tubes even in the narrow space etc. which was excavated in the outside or inside of the building or in the embedded state. Development of a practical surface peeling tool capable of

  The present invention has been made in view of the above-mentioned problems, and in order to solve the above-mentioned problems, it is a tool for surface peeling of a resin-coated tube, which is an annular tool main body insertable into and removable from the resin-coated tube. Are formed so as to be openable and closable, an external gear is provided on the annular tool main body, and the cutting edge portion of the peeling blade is used as a necessary cutting blade so that the resin coating portion of the resin coated tube can be peeled in a spiral. And the operation handle on which the ratchet is mounted is formed swingably on the tool main body, and the external gear of the tool main body is rotatably mounted on the tool main body. When the operation handle is attached to the tool body, the ratchet is engaged with the external gear on the tool body, the operation handle is swung, and the tool is peeled with a peeling blade. Resin-coated portion of resin-coated tube inserted into annular portion of main body There is provided a surface skin stripping tool of the resin-coated pipe, characterized in that so as to peel skin.

  Further, a tool main body support having a U-shaped cross section is provided at the lower end of the operation handle for mounting on the lower end of the outer periphery of the tool main body, and the outer peripheral upper side of the annular tool main body facing the tool main body support A ratchet attachment portion is provided so as to be attachable to the external gear, and the operation handle can be attached to and detached from the tool main body. A tool for surface peeling of a resin-coated tube is provided.

  Furthermore, a ratchet mounting portion is provided slidably on the operation handle, and when the ratchet mounting portion is moved away from the tool main body, the annular portion of the tool main body is expanded to be insertable into and removable from a predetermined resin coated tube. When attaching the part to a predetermined resin-coated tube, the ratchet mounting part is brought close to the tool main body, the external gear on the tool main body is engaged with the ratchet, and the operating handle is pivoted to peel off. The present invention provides a tool for surface peeling of a resin-coated tube.

  Furthermore, using the above-described tool for peeling the surface of the resin-coated tube, the operating handle is rocked and the resin-coated portion of the intermediate connecting portion for branching or the end of the resin-coated tube is peeled with the peeling blade. It is an object of the present invention to provide a method of surface peeling of a resin-coated tube characterized by peeling.

  The tool for surface peeling of a resin-coated tube according to the present invention is a tool for peeling a surface of a resin-coated tube according to claim 1 and is capable of opening and closing an annular tool body so as to be insertable into and removable from the resin-coated tube. An external gear is provided on the annular tool body, and the cutting edge portion of the peeling blade is used as a cutting edge so that the resin-coated portion of the resin-coated tube can be peeled in a spiral shape. It is mounted so as to be contactable with the resin-coated portion of the resin-coated tube that is inserted into and removed from the main body, and the operation handle equipped with the ratchet is formed pivotably on the tool main body, and the external gear on the tool main body is ratcheted When the operating handle is attached to the tool body, a ratchet is engaged with the external gear on the tool body, the operating handle is swung, and the peeling blade forms an annular ring of the tool body. Make the resin coated part of the resin coated tube inserted in the part spirally By forming to peel off, the operation handle can be swung to the tool main body, and the surface peels off to the intermediate connection part etc. where the resin coated pipe to be constructed in the installation site of gas pipe, water pipe etc. Open and insert the tool body of the tool, close the tool body to put it into the installed state, engage the ratchet with the external gear on the tool body, and swing the operation handle around the resin-coated tube. The resin-coated portion of the resin-coated tube can be spirally peeled off at the cutting edge portion of the peeling blade in contact with the surface of the resin-coating tube. Therefore, even in a narrow place where construction site is excavated, etc., piping can be performed easily and quickly.

  According to a second aspect of the present invention, the lower end portion of the operation handle is provided with a tool main body support portion having a U-shaped cross section for mounting on the lower end portion of the outer peripheral portion of the tool main body. The tool body of the surface stripping tool for resin sheaths to be constructed by providing the ratchet mounting portion so as to be attachable to the external gear on the outer peripheral upper side of the tool body and enabling the operation handle to be attached to and detached from the tool body. The cover can be inserted and attached, and by swinging the operation handle around the resin-coated tube, the resin-coated portion on the surface of the resin-coated tube can be cut with a peeling blade, and the resin-coated portion of the resin-coated tube Can be peeled off continuously in a spiral.

  Furthermore, as in claim 3, the operation handle is provided with a ratchet mounting portion slidably, and when the ratchet mounting portion is moved away from the tool main body, the annular portion of the tool main body is expanded and inserted into a predetermined resin-coated tube When the annular part of the tool main body is attached to a predetermined resin-coated tube, the ratchet mounting part is brought close to the tool main body, the ratchet is engaged with the external gear of the tool main body, and the operation handle is swung By peeling off, the ratchet mounting portion slides on the operation handle, and the annular portion of the tool main body can be expanded and contracted to be inserted into and removed from the resin-coated tube, and the resin-coated tube is peeled off as described above Can go.

  Further, according to the fourth aspect, using the surface peeling tool for the surface of the resin coated tube, the operation handle is swung to peel the end portion of the resin coated tube or a middle connecting portion for branching by the peeling blade. As described above, the tool body of the surface peeling tool is opened and inserted into the resin-coated tube by spirally peeling the resin-coated portion of the above, and the tool body is closed and put on the outside of the tool body. When the ratchet is engaged with the tooth gear and the operation handle is swung around the resin-coated tube, the resin-coated portion of the resin-coated tube is spiraled at the cutting edge of the peeling blade in contact with the surface of the resin coated tube. It can be peeled off and piping can be done easily and quickly.

A partially omitted front view (a) and an explanatory side view (b) according to an embodiment of the present invention, The front view (a) of the tool main body part same as the above, the front view (b) of the opened state, An enlarged front view (a) and an enlarged side view (b) of the same peeling blade The same as above, a partially omitted front view (a) of attachment explanation of the peeling blade to the tool main body, a front view (b) of its position adjustment, and an enlarged sectional view (c) of the insertion / removal position adjustment tool portion Front view (a) and side view (b) of the same operation handle The front view (a) side view (b) of the stopper part same as the above, A side view of a tool body of another embodiment of the same. The explanatory side view (a), (b) which partially abbreviate | omitted the one usage example of this invention.

  The surface peeling tool and peeling method according to the present invention is a surface peeling tool 1 for a resin-coated tube 2, and the resin-coated tube 2 is formed so that an annular tool main body 4 can be opened and closed. An external gear 5 is provided on the annular tool main body 4 so that the resin-coated portion of the resin-coated tube 2 can be peeled in a spiral manner. The cutting edge portion 7 of the peeling blade 6 is used as a necessary scooping blade. 7 is attached to the resin-coated portion of the resin-coated tube 2 which is inserted into and removed from the tool main body 4, and the operation handle 9 on which the ratchet 8 is attached is formed pivotably on the tool main body 4 When the ratchet 8 is disposed so as to be engageable with and disengaged from the external gear 5 of the main body 4 and the ratchet 8 is engaged with the external gear 5 of the tool main body 4 to attach the operation handle 9 to the tool main body 4 Swing the operation handle 9 and insert it into the annular part of the tool body 4 with the peeling blade 6 It is characterized in that so as to peel skin resin-coated portion of the resin-coated pipe 2 which is helically.

  As shown in FIGS. 1 (a) and 1 (b), the surface peeling tool 1 has an annular tool main body 4 such as a ring having a predetermined diameter corresponding to the resin-coated tube 2 as shown in FIGS. 2 (a) and 2 (b). As in the above, the pivoting support 10 and the closing / closing tool 11 are attached to the lower end portion and the upper end portion so that the pair of semi-annular members 12 can be opened and closed so that they can be fitted in and removed from the resin coated tube 2 .

  A peeling blade 6 as shown in FIGS. 3 (a) and 3 (b) is attached to the side surface of one semi-annular body 12 of the tool body 4 so that the cutting edge 7 can be protruded. 4 (a) and 4 (b) are attached to the arc plate-like mounting adjustment member 13, and the end portion side of the attachment adjustment member 13 on the blade edge side is pivotally connected, centering on the pivot attachment portion 13a The blade edge side is pivotably mounted on the tool main body 4 so that it can be freely detached from the tool body 4 by the position adjusting tool 14 such as the retracting position 13b and the peeling position 13c and the cutting edge 7 of the peeling blade 6 is retracted. It is possible to install it in the position and peeling position.

  As shown in FIG. 4C, the position adjustment tool 14 operates a plunger 14b on which a spring 14a such as a coil spring having a required elasticity is mounted to move the retraction position 13b of the mounting adjustment member 13 and the peeling position 13c. The cutting edge portion 7 of the peeling blade 6 can be held easily and securely in the retracted position and the peeling position.

  The peeling blade 6 is formed of a required tool steel, and the peeling blade 6 is formed into an arc plate having a width of several millimeters as shown in FIGS. 3 (a) and 3 (b). Of the mounting adjustment member 13 formed like the latch lever as described above by aligning the inner peripheral portion of the annular tool main body 4 with the outer peripheral surface of the resin-coated tube 2 as described above. The edge opposite to the cutting edge is pivoted and locked to the peeling position 13c by the position adjustment tool 14, and the sharp edged cutting edge 7 of the peeling blade 6 is protruded by a required amount, and the resin coating on the surface of the resin coated tube 2 To be able to peel off in a spiral.

  The cutting edge portion 7 of the peeling blade 6 has a required curving angle of 40 to 60 degrees with the back surface as a flat surface as shown in FIGS. 3A and 3B, and the cutting surface of the upper surface is a circle of the required curvature surface An arc surface such as an arc shape or an elliptic arc shape is used, and a relief 7a having a clearance angle of 1 to 5 degrees, preferably 2 to 3 degrees is recessed in the side surface portion on the front side. The rear side is slightly shortened so that the resin-coated surface of the resin-coated tube 2 can be peeled smoothly and continuously in a predetermined width.

  As shown in FIGS. 1 (a) and 1 (b), a semi-circular operation handle attaching portion 15 along the tool body 4 of the operation handle 9 is provided on one side of the annular five tool body 4 at the lower end. A ratchet mounting portion 17 is provided on the operation handle 9 so as to be able to slide by a predetermined amount along the axial direction so as to be held by the support portion 16 and the ratchet mounting portion 17 on the upper side. When away from the main body 4, the semi-annular body 12 of the tool main body 4 is opened so that it can be inserted into and removed from the intermediate connection portion 3 etc of the predetermined resin coated tube 2, and the semi-annular body 12 of the tool main body 4 is When mounted on the intermediate connection part 3 etc. of the resin coated tube 2, the ratchet mounting part 17 is slid to bring it close to the tool main body 4 and the ratchet on the external gear 5 such as spur gear or claw gear on the side of the tool main body 4 Engaging the 8 and swinging the operating handle 9 to rotate the tool body 4 And to be able to peel skin. 17a is a stopper for the ratchet attachment portion, and 17b is a fastener for the ratchet attachment portion.

  As shown in FIGS. 5 (a) and 5 (b), the ratchet mounting portion 17 is pivotally supported by the shaft portion 18 so that the ratchet 8 can be pivoted to the left and right. By pressing the ball 20 on the spring 19 via a spring 21 of a predetermined elastic force, one of the ratchet pawls 22 of the ratchet 8 is engaged in and disengageable with the external gear 5 described above, and the external gear 5 is unidirectionally It is possible to turn on.

  In the lower part of the operating handle 9, as shown in FIGS. 5 (a) and 5 (b), the tool main body support 16 of the U-shaped cross section of the central lower end of the semicircular arc operating handle attaching part 15 The lower end portion is inserted and held in a removable manner, and as described above, the ratchet mounting portion 17 is slid to move closer to the tool main body 4 and the upper end of the tool main body 4 to the ratchet mounting portion 17 of both side plates of the ratchet 8 The part is held in place to hold the ratchet mounting portion fastening tool 17b in a locked state.

  Reference numeral 23 denotes a peeling stopper, and as shown in FIGS. 6 (a) and 6 (b), the semicircular arc members 26 and 27 can be opened and closed by the pivot support 24 and the butterfly attachment 25. It is attached to the peeling start position and end position of the required width, and the surface peeling tool 1 is moved to the peeling position of the stopper 23 so that the resin coated tube 2 can be peeled off with a predetermined width. If necessary, the stopper 23 can be moved every several cm to peel off the resin-coated tube 2 like a scale insect.

  Incidentally, as shown in FIG. 7, the mounting guides 28 (three pieces) for mounting the resin coated tube 2 are provided so as to protrude concentrically on the back side of the tool main body 4 concentrically. The rotation prevention plate 29 of the resin-coated tube 2 of a predetermined elastic force is disposed in contact with the surface of the resin-coated tube 2 so as to be able to bite into at least one location of the mounting guide 28 It is preferable to prevent the resin-coated tube 2 from rotating together when the handle 9 is rocked and peeled off.

  The surface peeling tool 1 can be used for an appropriate diameter such as 25A, 32A, 50A, 100A corresponding to the diameter of the required resin-coated tube 2, and an adapter or the like with a required diameter can be used if necessary. It is also possible to install and cope with it, and it is also possible to attach a plurality of peeling blades 6 to the tool main body 4 or to attach them exchangeably, and appropriately adopt the embodiment based on the spirit of the present invention. It can be done.

  FIG. 1 and the subsequent figures show an embodiment of the present invention. As shown in FIGS. 2 (a) and 2 (b), the surface peeling tool 1 has an annular tool body 4 corresponding to the resin-coated tube 2 having a required diameter as shown in FIGS. 1 (a) and 1 (b). A pair of semi-annular members 12 are formed so as to be openable and closable, an external gear 5 of a predetermined pitch is provided on the outer peripheral portion, and a ratchet 8 of the operation handle 9 is detachably provided on the external gear 3. Is pivoted to rotate the tool body 4.

  As shown in FIGS. 3 (a) and 3 (b) and FIGS. 4 (a) to 4 (c), the peeling blade 6 has a circular arc plate shape on the side surface of one semi-annular body 12 of the tool main body 4. Attached to the attachment adjustment member 13 and pivotally attach the end of the attachment adjustment member 13 on the blade edge side, so that the cutting edge side can be pivoted about the pivot attachment portion 13a. The cutting edge portion 7 of the peeling blade 6 is made to be able to peel off at a predetermined raking angle to a predetermined position.

  As shown in FIGS. 3 (a) and 3 (b), the cutting edge 7 of the peeling blade 6 has a slightly longer front side and a slightly shorter rear side to form an arc surface with a required rake angle. A relief 7a with a clearance angle of about 3 degrees is recessed in the side part, and the resin-coated surface of the resin-coated tube 2 is cut with a circular arc surface of a predetermined width so that peeling can be smoothly and continuously in a spiral shape. There is.

  The operation handle 9 is provided with a ratchet mounting portion 17 slidably along its axial direction, and when the ratchet mounting portion 17 is slid away from the tool main body 4, the semi-annular body 12 of the tool main body 4 is The semi-annular body 12 of the tool main body 4 is attached to the intermediate connection portion 3 of the resin-coated tube 2 so that the half-annular body 12 of the tool main body 4 can be opened and inserted into the intermediate connection portion 3 of the resin-coated tube 2 The ratchet 8 is engaged with the external gear 5 of the tool main body 4 and locked so that the ratchet 8 can be pivoted in one direction on the external gear 5 so that the operation handle 9 is moved. Is pivoted to pivot the external gear 5 so that it can be peeled off.

  As shown in FIGS. 5 (a) and 5 (b), a semicircular arc shaped support arm 15 is provided at the lower part of the operation handle 9, and the tool main body support 16 of the U-shaped cross section at the center lower end is a tool main body. When the lower end portion of 4 is inserted and held, and the upper end portion of the tool main body 4 is pinched and attached to the ratchet attachment portions 17 of both side plates of the ratchet 8 and the tool main body 4 is inserted into the resin coated tube 2 The operation handle 9 is attached to the tool body 4 so that the tool body 4 can be pivoted via the ratchet 8 by its swinging operation.

  For example, when peeling off the resin-coated portion of the intermediate connecting portion 3 of the resin-coated pipe 2 of the gas pipe of 32 A diameter, as shown in FIG. 8A, the resin-coated pipe 2 is peeled off first. Attach the stopper 23 to the starting point position to be started, open the semi-annular body 12 of the tool main body 4 of the surface peeling tool 1 on the starting point side of peeling and attach it, as shown in FIG. 4 (a), (b) The position adjusting tool 14 of the peeling blade 6 is inserted into and pulled out of the spring 14a against the spring 14a to pivot the arc plate-like attachment adjusting member 13 from the retracted position to the peeling position to project the cutting edge 7 to a predetermined position.

  Then, the lower end portion of the tool main body 4 is inserted into the tool main body support portion 16 at the lower end portion of the support arm 15 of the operation handle 9 and the ratchet mounting portion 17 is slid to approach the tool main body 4. The ratchet 8 is engaged with the external gear 5 and locked by the tightening tool 17b for the ratchet mounting portion, the ratchet 8 is turned to the peeling direction side, the ratchet pawl 22 is engaged with the external gear 5, and the operation handle The resin coating portion at the start position of the intermediate connection portion 3 of the resin-coated tube 2 is peeled off in an arc shape by swinging 9 by the peeling blade 6.

  Next, loosen the stopper 23, attach the peeling of the resin-coated tube 2 to the final position of a predetermined width as shown in FIG. 8B, and swing the operation handle 9 to peel off the peeling blade. The resin-coated portion of the intermediate connection portion 3 of the resin-coated tube 2 can be spirally peeled off with a predetermined width 6.

  By swinging the operation handle 9 on the side of the resin-coated tube 2, the resin-coated portion of the resin-coated tube 2 is spirally cut into the resin-coated portion of the resin-coated tube 2 by the cutting edge 7 of the peeling blade 6. Can be peeled off continuously in a spiral, and when the stopper 23 is hit, the resin coating peels off in a spiral, and the intermediate connecting portion 3 of the branch of the resin-coated tube 2 is peeled cleanly and rapidly It can be peeled off.

  In this manner, the tool body 4 of the surface peeling tool 1 is opened and attached to the intermediate connecting portion 3 of the resin-coated tube 2 to be installed at the installation site of the gas pipe, etc. With the operation handle 9 part attached to the tool main body 4 by closing it in the mounting state, the ratchet mounting portion 17 is slid so as to approach the tool main body 4 and the external gear 5 of the tool main body 4 When the ratchet 8 is engaged with the tooth gear 5 and the operation handle 9 is swung around the resin-coated tube 2, the resin-coated tube 2 is formed at the cutting edge 7 of the peeling blade 6 in contact with the surface of the resin-coated tube 2. The resin-coated portion of the intermediate connection portion 3 can be peeled off, and piping work can be performed easily and quickly even in a narrow place where the construction site is excavated. In addition, even if the resin-coated tube 2 is not a perfect circle, it can be peeled off smoothly. In addition, by allowing the operation handle 9 to be attachable to and detachable from the tool main body 4, attachment to the resin-coated tube 2 is easy, and space saving of the tool can be saved.

  In particular, as shown in FIGS. 4 (a) to 4 (c), the peeling blade 6 is attached to the attachment adjusting member 13 in the form of a circular arc plate, and the end of the attachment adjusting member 13 on the blade edge side is pivoted. The cutting edge side is pivotably mounted on the tool body 4 about the pivoting portion 13a so that it can be removably attached to the retracting position 13b and the peeling position 13c by the position adjusting tool 14 of the dismounting pin. The cutting edge portion 7 of the stripping blade 6 can be quickly and easily installed at the retracted position and the stripping position, which is preferable because the operation can be performed efficiently. Further, when the peeling blade 6 is set at the retracted position, the surface peeling tool 1 can be freely moved along the resin-coated tube 2 and can be quickly set at the required position.

  Further, as shown in FIGS. 3 (a) and 3 (b), the cutting edge 7 of the peeling blade 6 is provided with a relief 7a at the front side surface portion as a required raking angle with the back surface as a flat surface. Thus, the resin-coated surface of the resin-coated tube 2 can be smoothly and continuously peeled in a spiral with a predetermined width.

    FIG. 7 shows another embodiment of the present invention, in which three mounting guides 28 of the resin-coated tube 2 are horizontally projected concentrically on the back side of the tool main body 4 and predetermined on the mounting guides 28. The rotation stop plate 29 of the resin-coated tube 2 of elastic force is provided. In the present embodiment, the resin-coated tube 2 can be vertically inserted into the tool main body 4, and it is possible to prevent the resin-coated tube 2 from rotating together when the operating handle 9 is rocked and peeled off.

  Although the gas pipe has been described above, the same applies to a water pipe, and further, it can be applied to an oil pipe, a conduit including an electric wire and the like, and the peeling blade preferably has the above shape. The appropriate shape can also be implemented based on the meaning of. Further, the present invention is not limited to the use at a narrow installation site as described above, and can be applied to an end other than the intermediate connection part of the resin-coated tube.

  INDUSTRIAL APPLICABILITY The present invention can be used for surface peeling of intermediate connection parts and end parts of resin-coated tubes such as gas pipes, water pipes, LNG pipes, LPG pipes, oil feeding pipes, electric pipes internally containing electric wires.

DESCRIPTION OF SYMBOLS 1 ... Tool for surface peeling 2 ... Resin-coated pipe 3 ... Part for intermediate connection 4 ... Tool main body 5 ... External gear 6 ... Blade for peeling 7 ... Cutting edge part 8 ... Ratchet 9 ... Operation handle 23 ... Stopper

Claims (4)

A tool for peeling the surface of a resin-coated tube,
An annular tool main body is formed so as to be openable / closable in and removable from the resin-coated tube, and an external gear is provided on the annular tool main body so that the resin-coated portion of the resin-coated tube can be peeled in a spiral shape. With the cutting edge of the stripping blade as the required scooping blade, the cutting edge is attached to the resin-coated portion of the resin-coated tube which can be inserted into and removed from the tool body so as to be contactable.
An operating handle on which a ratchet is mounted is formed swingably on the tool body, and a ratchet is disposed so as to be engageable with and disengageable from an external gear of the tool body,
When the operating handle is attached to the tool body, the ratchet is engaged with the external gear of the tool body, the operating handle is swung, and the resin of the resin-coated tube inserted in the annular portion of the tool body with the peeling blade A tool for surface peeling of a resin-coated tube, characterized in that the coating portion is peeled in a spiral shape.   A tool main body support having a U-shaped cross section is provided at the lower end of the operation handle for mounting on the lower end of the outer periphery of the tool main body, and the outer side of the outer peripheral upper side of the annular tool main body is opposed to the tool main body support. The tool for surface peeling of a resin-coated tube according to claim 1, characterized in that a ratchet mounting portion is provided so as to be attachable to a tooth gear so that the operation handle can be attached to and detached from the tool body.   A ratchet mounting portion is provided slidably on the operation handle, and when the ratchet mounting portion is moved away from the tool main body, the annular portion of the tool main body is expanded to be insertable into and removable from a predetermined resin coated tube. When mounted on a predetermined resin-coated tube, the ratchet mounting portion is brought close to the tool main body, the external gear on the tool main body is engaged with the ratchet, and the operating handle is pivoted to peel off. A tool for surface peeling of a resin-coated tube according to claim 1 or 2.   An intermediate connection for an end portion or a branch of a resin-coated tube with a peeling blade by swinging the operation handle using the tool for peeling the surface of the resin-coated tube according to any one of claims 1 to 3 A method of peeling a surface of a resin-coated tube, comprising: spirally peeling the resin-coated portion of the part.

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