JP5000407B2 - Covering material heat sealer for pipe members - Google Patents

Description

  The present invention is used, for example, in joining a heat insulating material with a heat insulating material such as an air-conditioning pipe whose outer surface is coated with a heat insulating material between the heat insulating materials divided on both sides in the longitudinal direction of the inner tube. The present invention relates to a coating member heat-sealing tool for pipe members such as a heat insulating material heat-sealing tool for fluid pipes.

Conventionally, in an air conditioner, when the refrigerant passing through the pipe changes more rapidly than the ambient temperature during operation, particularly when the temperature drops below the dew point, condensation may occur on the outer surface of the pipe. In order to prevent this dew condensation, a pipe covered with a cylindrical heat insulating material is constructed in accordance with the structure of the building. During the construction, the tubes may be connected to each other, and the heat insulating materials are also joined at the time of the connection. For example, in the following Patent Document 1, a seam sheet is wound around a seam between heat insulating waterproof sheets. In general, in a fluid tube with a heat insulating material having dew condensation prevention means, as shown in FIG. 13, the outer surface 32a of the inner tube 32 is covered with a heat insulating material 31 made of foamed polyethylene or the like, An adhesive tape 40 is wound around the outer periphery of the opposite end faces 31a at the joint 33 between the end faces 31a of the divided heat insulating materials 31.
JP 2001-50481 A

  However, when the heat insulating material 31 contracts due to a construction error or a change over time after the construction, the adhesive tape 40 is peeled off, and a gap is formed in the joint 33 between the two heat insulating materials 31, and the gap between the inner tube 32 and the outer heat insulating material 31 is formed. The surface 32a may be exposed and condensation may occur there. If the condensed water leaked into the building, it caused water leakage.

  In view of this, the present applicant, in an application filed on April 6, 2006 (Japanese Patent Application No. 2006-105376), heats the opposite end surfaces of the two heat insulating materials divided on both sides in the longitudinal direction of the inner pipe by means of a heating member. The present invention provides a heat insulating material heat fusion tool for a fluid pipe that is used when a seam joined by bonding is provided.

  In the heat insulating material heat sealer for fluid pipes, since the heating member needs to have a minimum projecting dimension with respect to the holder so that the heating member can be opened and closed outside the holder, it may be bulky during transportation and storage. It was.

  In addition to such a heat insulating material heat fusion tool for fluid pipes, the present invention provides both covering materials divided on both sides in the longitudinal direction of the inner pipe among the covering materials covering the outer surface of the inner pipe of the pipe member other than the fluid pipe The purpose is to improve the usability of the pipe member covering material heat fusion tool by improving it so that it is not bulky during transportation and storage. It is said.

  Drawing of postscript embodiment (1st Embodiment shown in FIGS. 1-4 and FIGS. 11-12, 2nd Embodiment shown in FIGS. 5-8 and FIGS. 11-12, 3rd Embodiment shown in FIGS. 9-10) The present invention will be described with reference to symbols.

The pipe member covering material heat-sealing tool according to the invention of claim 1 corresponds to the first and second embodiments and is configured as follows.
Both arms 7 and 10 are supported on the holder 1 having the mouth 2a so that the arms 7 and 10 can be opened and closed, and the heating members 6 and 9 are supported on the arms 7 and 10 by the mouth 2a of the holder 1. , 8 are provided. In both the heating members 5 and 8, an insertion hole 29 is formed between the heating bodies 6 and 9 in a closed state Q in which the heating bodies 6 and 9 are closed together with the arms 7 and 10. In both the heating elements 6 and 9 in the closed state Q, heat is generated by at least one side surface 30 of both side surfaces 30 formed on the outer periphery of the insertion hole 29 on both sides in the center line direction Y of the insertion hole 29. A heating surface is provided. The moving guides 4, 11 provided between the arms 7, 10 and the holder 1 allow the heating members 6, 9 of both the heating members 5, 8 to approach the mouth 2 a of the holder 1 and the distance XB. Both the heating members 5 and 8 are supported so as to be movable with respect to the holder 1 so as to move in the direction XF.

  In the first aspect of the invention, when the covering members 31 divided by the covering member pipes M1 and M2 in which the outer surface 32a of the inner tube 32 is covered with the covering member 31 are joined together, the heating members 5 and 8 are closed. In Q, the inner tube 32 is fitted into the insertion holes 29 of the heating bodies 6 and 9, and the side surfaces 30 of the heating bodies 6 and 9 are applied to the end surface 31a of the covering material 31 as the heating surface to melt the end surface 31a. it can.

  In particular, even when both heating members 5 and 8 protrude from the mouth 2a of the holder 1 by a required length due to the separation of the heating bodies 6 and 9 from the mouth 2a of the holder 1, the heating body to the mouth 2a of the holder 1 By approaching 6 and 9, the heat-sealing tool can be miniaturized by reducing the projecting dimension L of the heating members 5 and 8 with respect to the mouth 2a of the holder 1 during transportation and storage.

  In the invention of claim 2 (corresponding to the first and second embodiments) based on the invention of claim 1, the heating members 5 and 8 bring the heating bodies 6 and 9 closer to the mouth 2a of the holder 1. Thus, the housing state T accommodated in the holder 1 and the projecting state U in which the heating elements 6 and 9 are separated from the mouth 2a of the holder 1 and project from the holder 1 can be taken. According to the second aspect of the present invention, all or a part of the heating bodies 6 and 9 of the heating members 5 and 8 can be accommodated in the holder 1 during transportation or storage so that the heat-sealing tool can be downsized.

  In the invention of claim 3 (corresponding to the first and second embodiments) based on the invention of claim 2, the holder 1 is put in and out of both heating members 5 and 8 by operating the operation parts 19 and 11 a. An operating means 17 and an opening / closing operating means 18 for opening and closing the arms 7 and 10 with each other by operating the operating portion 19 are provided. In the invention of claim 3, both the heating members 5, 8 can be moved in and out by operating the operation parts 19, 11 a of the access operation means 17, and both the heating members 5, 8 can be operated by operating the operation part 19 of the opening / closing operation means 18. 8 can be opened and closed with respect to each other.

  In the invention of claim 4 (corresponding to the first embodiment) based on the invention of claim 3, the access control means 17 is a link mechanism including an operation part 19, and the opening / closing operation means 18 is connected to the operation part 19. The entry / exit operation means 17 and the opening / closing operation means 18 also serve as the operation unit 19, and the operation of the operation unit 19 causes the link mechanisms 17, 18 to operate in series to perform both heating. The members 5 and 8 are moved in and out and opened and closed. In the fourth aspect of the invention, the heating members 5 and 8 can be put in and out and opened and closed in series by simply operating the operating portion 19.

  The pipe member covering material heat-sealing tool according to the invention of claim 5 corresponds to the third embodiment and is configured as follows. The invention of claim 5 may be based on the invention of any one of claims 1 to 4.

  Both arms 7 and 10 are supported on the holder 1 having the mouth 2a so that the arms 7 and 10 can be opened and closed, and the heating members 6 and 9 are supported on the arms 7 and 10 by the mouth 2a of the holder 1. 8 is provided. In both the heating members 5 and 8, an insertion hole 29 is formed between the heating bodies 6 and 9 in a closed state Q in which the heating bodies 6 and 9 are closed together with the arms 7 and 10. In both the heating elements 6 and 9 in the closed state Q, heat is generated by at least one side surface 30 of both side surfaces 30 formed on the outer periphery of the insertion hole 29 on both sides in the center line direction of the insertion hole 29. A heating surface is provided. The arms 7 and 10 of the heating members 5 and 8 are moved so as to move the heating bodies 6 and 9 of the heating members 5 and 8 in the direction XB approaching the mouth 2a of the holder 1 and the direction XF separating them. It is provided so that it can be stretched.

  In the invention of claim 5, when the covering members 31 divided by the covering member pipes M1 and M2 in which the outer surface 32a of the inner tube 32 is covered with the covering member 31 are joined together, the heating members 5 and 8 are closed. In Q, the inner tube 32 is fitted into the insertion holes 29 of the heating bodies 6 and 9, and the side surfaces 30 of the heating bodies 6 and 9 are applied to the end surface 31a of the covering material 31 as the heating surface to melt the end surface 31a. it can.

  In particular, even when the heating members 5 and 8 are protruded by the required length from the mouth portion 2a of the holder 1 by the extension of the arms 7 and 10 of the heating members 5 and 8, the arms 7 and The shrinkage of 10 makes it possible to reduce the size L of the heat-sealing tool by reducing the projecting dimension L of the heating members 5 and 8 with respect to the mouth 2a of the holder 1 during transportation and storage.

  In the invention of claim 6 (corresponding to the first to third embodiments) based on the invention of any one of claims 1 to 5, the arms 7 and 10 on the holder 1 side are The two heating members 6 and 9 are rotated relative to each other by the relative rotation of the arms 7 and 10. The through-holes are formed in the split edges 13 opposite to each other in the rotation direction R around the rotation center line 12a of the attachment portion 2 of the holder 1 between the heating bodies 6 and 9 in the closed state Q. The split hole 14 for forming 29 was formed. Further, in the invention of claim 7 (corresponding to the first to third embodiments) based on the invention of claim 6, of the arms 7 and 10 on the holder 1 side, one arm 7 positioned on the holder 1 is attached. On the other hand, only the other arm 10 was opened and closed. In the inventions according to claims 6 to 7, the heating members 5 and 8 can be combined in a compact manner.

Next, technical ideas other than the claims will be described with reference to the reference numerals in the drawings of the embodiments.
In an eighth invention based on the invention of claim 3 (corresponding to the second embodiment), the in / out operation means 17 and the opening / closing operation means 18 have operation portions 11a and 19 by different operations. . In the eighth invention, the entrance / exit operation means 17 and the opening / closing operation means 18 can have a simple structure.

  In the ninth invention (corresponding to the first to third embodiments) based on the invention of claim 6 or claim 7 or the eighth invention, the holder 1 is a mounting portion that supports the heating members 5 and 8. And a heating part 6 that is supported by the mounting part of the head 2 so as not to rotate. And the other heating body 9 rotatably supported so as to open and close with respect to the one heating body 6, and the one heating body 6 is disposed on the extending direction side of the grip portion 3. The other heating element 9 is disposed on the opposite side to the extending direction. In the ninth invention, the heating members 5 and 8 can be gathered in a compact manner, and the inner tube 32 and the both covering materials 31 are placed in the dividing holes 14 of the both heating bodies 6 and 9 in the closed state Q of the heating members 5 and 8. Easy to fit.

  In the invention of any one of claims 1 to 7, or the tenth invention (corresponding to the first to third embodiments) based on the eighth or ninth invention, the heating member 5 , 8 on the front side of the heating surface 30 of the heating bodies 6, 9, for example, a sheet 30 a having a surface of a resin such as a fluororesin having good separability from the surface to be heated is attached, or the surface to be heated is The surface is coated with a resin such as a fluororesin having good separability, and a surface having a resin having good separability with respect to the heated surface is provided. In the 10th invention, when the heating surface 30 of the heating bodies 6 and 9 is applied to the end surfaces 31a of both the covering materials 31 shown in FIG. 11C, the heating surface 30 can be easily separated from the heated surface.

  The present invention provides a tubular member covering material heat fusion tool for easily melting the end surface 31a of the covering material 31 in order to manufacture the tubular members M1 and M2 in which a gap 33 is hardly formed in the joint 33 between both covering materials 31. In addition, it is possible to improve the usability of the tube member covering material heat-sealing tool so as not to be bulky during transportation and storage.

First, the heat insulating material heat fusion tool for fluid pipes according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4 and FIGS.
As shown in FIGS. 1 to 3, in the holder 1, a mouth is formed on the front side of the head 2 among both sides in the front-rear direction X, both sides in the left-right direction Y, and both sides in the up-down direction Z with respect to the head 2 (mounting portion). A portion 2a is formed, and the grip portion 3 is bent from the lower side of the head 2 and extends downward. As shown in FIGS. 2 (b) and 4 (a) (b), on the inner surfaces of the left and right sides of the head 2, the moving guide portions 4 are opposed to each other in the left / right direction Y and extend in the front / rear direction X. ing. The head 2 of the holder 1 has a lower heating member 5 in which the heating body 6 is attached to the front side of the lower arm 7 and an upper heating member 8 in which the heating body 9 is attached to the front side of the upper arm 10. It is attached.

  As shown in FIGS. 2B and 4A and 4B, in the lower heating member 5, the movement guide portions 11 formed on the left and right sides of the lower arm 7 are both left and right of the head 2. The movement guide unit 4 is supported so as to be movable in the front-rear direction X. As shown in FIGS. 2B and 4A and 4B, in the upper heating member 8, the rear side of the upper arm 10 is a support shaft with respect to the left and right brackets 7a formed on the rear side of the lower arm 7. 12 is supported so as to be rotatable in the vertical direction Z. In the lower heating member 5, the heating body 6 is disposed on the extending direction (downward) side of the grip portion 3, and in the upper heating member 8, the heating body 9 is on the opposite side (upward) to the extending direction. The lower heating body 6 and the upper heating body 9 are each in the form of a plate having a semicircular outer periphery. A semicircular split hole 14 is formed in the split edge portion 13 of the lower heating body 6 and the upper heating body 9 facing each other in the rotation direction R around the rotation center line 12a of the support shaft 12. . In the lower heating body 6 and the upper heating body 9, a heater 15 using a heat ray is incorporated as a heating means.

  As shown in FIGS. 1 (b), 2 (b), 3 (b) and 4 (c), the link mechanism 16 assembled in the holder 1 includes an entry / exit operation means 17, an opening / closing operation means 18, and the like. It has. The in / out operation means 17 and the opening / closing operation means 18 also serve as an operation lever 19 as an operation unit. The operation lever 19 is integrally attached to the left and right support shafts 20 supported rotatably at the lower side of the mouth portion 2a of the head 2, and rotates about the left and right support shafts 20. Supported as possible. In the entry / exit operation means 17, both left and right interlocking levers 21 sandwiching the operation lever 19 are integrally attached to the left and right support shafts 20, and the operation lever 19 is integrated around the left and right support shafts 20. The left and right interlocking levers 21 are supported by the left and right interlocking levers 21, and the left and right interlocking shafts 23 are supported by the lower arm 7. 22 is in attendance. In the opening / closing operation means 18, long holes 25 are formed in the left and right interlocking levers 24 that rotate integrally with the operation lever 19 around the left and right support shafts 20, and the interlocking shafts supported on the left and right sides of the upper arm 10. 26, the interlocking link 27 is rotatably supported, and the interlocking shaft 28 engaged in the long hole 25 of the left and right interlocking lever 24 is rotatably supported by the interlocking shaft 28.

  Now, the upper and lower heating members 8, 5 shown in FIG. 1 are in the accommodated state T accommodated in the closed state Q from the mouth 2 a in the head 2 of the holder 1. In that case, the left and right interlocking shafts 23 are located at the rear end of the long holes 22 of the left and right interlocking levers 21 in the loading / unloading operation means 17, and the left and right interlocking shafts 28 are the long holes 25 of the left and right interlocking levers 24 in the opening / closing operation means 18. At the rear end.

  When the operating lever 19 is pushed a little toward the grip portion 3 against the elastic force of the spring 20 a in this accommodated state T, the left and right interlocking levers 21 together with the operating lever 19 are moved in the entrance / exit operating means 17 as shown in FIG. The left and right interlocking shafts 23 are pushed by the left and right long holes 22 to move from the rear end side to the front end side of the left and right long holes 22. Therefore, both the left and right movement guide portions 11 of the lower arm 7 move forward XF with respect to the left and right movement guide portions 4 of the head 2, while the upper and lower heating members 8 and 5 remain in the closed state Q in the holder 1. The projecting state U projects from the inside of the head 2 through the mouth 2a. In this protruding state U, a part of the upper and lower arms 10 and 7 and the entire upper and lower heating bodies 9 and 6 out of the upper and lower heating members 8 and 5 protrude to the outside of the mouth 2a of the head 2 by the protruding dimension L. To do. In the opening / closing operation means 18, both the left and right interlocking levers 24 rotate together with the operation lever 19, and the left and right interlocking shafts 28 move from the rear end side to the front end side of the left and right long holes 25. Since the left and right interlocking shafts 28 are not pushed by the left and right elongated holes 25, the closed state Q of the upper and lower heating members 8 and 5 can be maintained.

  In the closed state Q (projecting state U) of the upper and lower heating members 8 and 5, the lower heating body 6 and the upper heating body 9 are superposed on each other at the split edge 13 to form a disk shape. An annular (circular) insertion hole 29 is formed by the split hole 14 of the split edge 13 at the center between the upper heating element 9 and the upper heating body 9. In the lower heating body 6 and the upper heating body 9, a semicircular side surface 30 is formed of an easily heated metal or the like on the entire outer periphery of the insertion hole 29 on both sides in the center line direction (left-right direction Y) of the insertion hole 29. ing. On both side surfaces 30 of the lower heating body 6 and the upper heating body 9, as shown in FIG. 2 (c), sheets 30a coated with a resin having good separability with respect to the heated surface, such as a fluororesin and a silicone resin. It is stuck. Further, the both side surfaces 30 may be coated with a resin having good separability with respect to the heated surface, such as a fluororesin or a silicone resin. The heater 15 generates heat on both side surfaces 30 and functions as a heating surface.

  When the operating lever 19 is further pushed toward the grip portion 3 against the elastic force of the spring 20a in the protruding state U (closed state Q), the left and right interlocking lever 24 is opened and closed in the opening / closing operation means 18, as shown in FIG. And the left and right interlocking shafts 28 are pushed at the front end portions of the left and right elongated holes 25 so that the upper arm 10 is rotated through the left and right interlocking links 27 and the upper arm 10 is pivoted about the rotation center line 12a. And the upper heating member 9 is rotated upward with respect to the lower heating member 6 so that the upper and lower heating members 8 and 5 are opened to each other. In the entry / exit operation means 17, both the left and right interlocking levers 21 rotate integrally with the operation lever 19, and the left and right interlocking shafts 23 move on the front end side of the left and right both long holes 22, so Therefore, the protruding state U of the upper and lower heating members 8 and 5 can be maintained.

  In the open state P (projection state U) of the upper and lower heating members 8 and 5, the split edge portions 13 of the lower heating body 6 and the upper heating body 9 are separated from each other, and the insertion hole 29 is formed in the closed state Q. The split holes 14 are also separated from each other, and an insertion / removal allowance space S can be formed between the split edges 13.

  When the operation lever 19 is released, the operation lever 19 is restored by the elastic force of the spring 20a. Therefore, in the opening / closing operation means 18, the upper arm 10 rotates downward about the rotation center line 12 a of the support shaft 12 via the left and right interlocking levers 24 and the left and right interlocking links 27, and the upper heating body 9 is lowered. The upper and lower heating members 8 and 5 are turned downward with respect to the side heating body 6 from the open state P (projection state U) to the closed state Q (projection state U). Further, in the access operation means 17, the upper and lower heating members 8, 5 are changed from the protruding state U (closed state Q) to the housed state T (closed state Q) via the left and right interlocking levers 21.

Next, a fluid pipe with a heat insulating material joined using the heat insulating material heat fusion tool for fluid pipe according to the first embodiment and a joining procedure thereof will be described with reference to FIGS.
As shown in FIG. 11 (a), a tube member in which an outer surface 32a of an inner tube 32 made of resin, copper, or the like is covered with a heat insulating material 31 as a cylindrical covering material made of a heat insulating material such as polyethylene foam. The fluid pipes M1 and M2 are divided at both sides in the longitudinal direction of the inner pipe 32. By opening a gap G between the outer surface 32a of the inner tube 32 and the inner peripheral surface of the heat insulating material 31, the inner tube 32 can be easily inserted into the heat insulating material 31 at the expanded portion or the bent portion. When these fluid pipes M1 and M2 are connected to each other, first, as shown in FIG. 11 (b), the heat insulating material 31 is moved in the longitudinal direction with respect to the inner pipe 32 so that the heat insulating materials 31 face each other. While separating the end surfaces 31a from each other, the inner pipes 32 exposed between the heat insulating materials 31 are connected to each other. Next, as shown in FIG. 3, the upper and lower heating members 8, 5 of the heat-sealing tool are opened P, and the insertion / removal-allowable space S is formed between the split edge portions 13 of the lower heating body 6 and the upper heating body 9. After the inner pipe 32 is inserted into the upper and lower heating members 8 and 5 in the closed state Q as shown in FIG. 2, the inner pipe 32 is fitted into the insertion hole 29. Thereafter, as shown in FIG. 11 (c), when the end surfaces 31a of the two heat insulating materials 31 are pressed against the sheets 30a on both side surfaces 30 of the lower heating body 6 and the upper heating body 9, the end surfaces 31a are simultaneously heated. Melted. Next, when the upper and lower heating members 8 and 5 are opened P, and the inner tube 32 is detached from the insertion / removal space S between the split edge portions 13 of the lower heating body 6 and the upper heating body 9, FIG. As shown in d), the end surfaces 31a of the two heat insulating materials 31 in the molten state oppose each other in the longitudinal direction. When the end surfaces 31a of the two heat insulating materials 31 in the molten state are pressed against each other immediately after the upper and lower heating members 8 and 5 of the heat fusion tool are removed from the end surfaces 31a of the two heat insulating materials 31 in this way, FIG. As shown in FIG. 2, both end surfaces 31 a are heat-sealed and joined to each other, and a seam 33 is formed on the entire outer periphery of the inner tube 32 by heat-sealing.

  Next, a heat insulating material heat fusion tool for fluid pipes according to a second embodiment of the present invention will be described with reference to FIGS. 5 to 8 and FIGS. 11 to 12 with a focus on differences from the first embodiment. 1, 2, 3, and 4 of the first embodiment correspond to FIGS. 5, 6, 7, and 8 of the second embodiment, respectively.

  In the entry / exit operation means 17 of the second embodiment, the left / right interlocking lever 21 and its left / right elongated holes 22 and the left / right interlocking shaft 23 are omitted in the entry / exit operation means 17 of the first embodiment, and instead, The movement guide portion 4 is opened to the outside by open portions 4a on both the left and right sides of the head 2 of the holder 1, and an operation knob as an operation portion formed on the movement guide portion 11 on both the left and right sides of the lower arm 7. 11a protrudes from the left and right open portions 4a.

  Now, the upper and lower heating members 8, 5 shown in FIG. 5 are in the accommodated state T accommodated in the closed state Q from the mouth 2 a in the head 2 of the holder 1. In that case, both the left and right operation knobs 11 a are located at the rear end portions of the left and right open portions 4 a in the entry / exit operation means 17, and the left and right interlock shafts 28 are the rear end portions of the long holes 25 of the left and right interlock levers 24 It is in.

  In this housed state T, when the left / right operation knob 11a is pushed forward XF in the entry / exit operation means 17, as shown in FIG. 6, the left / right operation knob 11a is moved from the rear end portion side to the front end portion side. Move to. Therefore, both the left and right movement guide portions 11 of the lower arm 7 move forward XF with respect to the left and right movement guide portions 4 of the head 2, while the upper and lower heating members 8 and 5 remain in the closed state Q in the holder 1. The projecting state U projects from the inside of the head 2 through the mouth 2a. In the opening / closing operation means 18, both the left and right interlocking shafts 28 move from the rear end side to the front end side of the long holes 25 of the left and right interlocking levers 24. Since it is not pushed, the closed state Q of the upper and lower heating members 8 and 5 can be maintained.

  When the operating lever 19 is pushed toward the grip portion 3 against the elastic force of the spring 20a in the protruding state U (closed state Q), the left and right interlocking levers 24 are opened in the opening / closing operation means 18, as shown in FIG. The left and right interlocking shafts 28 are pushed by the front end portions of the left and right elongated holes 25 so that the upper arm 10 moves along the rotation center line 12 a of the support shaft 12 via the left and right interlocking links 27. The upper heating body 9 is rotated upward with respect to the center, the upper heating body 9 is rotated upward with respect to the lower heating body 6, and both the upper and lower heating members 8, 5 are in the open state P that opens.

  When the operation lever 19 is released, the operation lever 19 is restored by the elastic force of the spring 20a. Therefore, in the opening / closing operation means 18, the upper arm 10 rotates downward about the rotation center line 12 a of the support shaft 12 via the left and right interlocking levers 24 and the left and right interlocking links 27, and the upper heating body 9 is lowered. The upper and lower heating members 8 and 5 are turned downward with respect to the side heating body 6 from the open state P (projection state U) to the closed state Q (projection state U).

  In this protruding state U, when the left / right operation knob 11a is pushed backward XB in the entry / exit operation means 17, the left / right operation knob 11a moves from the front end side to the rear end side of the left / right opening parts 4a. Therefore, both the left and right movement guide portions 11 of the lower arm 7 move backward XB with respect to the left and right movement guide portions 4 of the head 2, and the upper and lower heating members 8 and 5 are accommodated from the protruding state U with the closed state Q remaining. State T is entered. In the opening / closing operation means 18, the left and right interlocking shafts 28 move from the front end side of the elongated hole 25 of the left and right interlocking lever 24 to the rear end side.

  Next, a heat insulating material heat fusion tool for fluid pipes according to a third embodiment of the present invention will be described with reference to FIGS. 9 to 10, focusing on differences from the first embodiment. 1B, FIG. 2B, and FIG. 3B of the first embodiment are respectively shown in FIG. 9A, FIG. 9B, and FIG. 10A and FIG. 10B of the second embodiment. ).

  In the lower arm 7 of the lower heating member 5, the outer cylinder part 34 provided with the left and right brackets 7 a and the left and right movement guide parts 11 and the inner cylinder part 35 attached to the lower heating body 6 are inserted into each other. The inner cylinder part 35 is moved with respect to the outer cylinder part 34 and can be expanded and contracted so that the projecting dimension L of the lower heating member 5 can be changed. In the upper arm 10 of the upper heating member 8, an outer cylinder portion 37 provided with both left and right interlocking shafts 26 and an inner cylinder portion 38 attached to the upper heating body 9 are inserted into each other and connected by a set screw 39. The inner cylinder part 38 is movable with respect to the outer cylinder part 37 so that the protruding dimension L of the upper heating member 8 can be changed. In the lower arm 7 and the upper arm 10, one or more intermediate cylinders (not shown) are interposed between the outer cylinder portions 34 and 37 and the inner cylinder portions 35 and 38, and they are inserted into each other so as to be stretchable. You may make it connect with. Further, although not shown, the lower arm 7 and the upper arm 10 of the second embodiment may be made telescopic in the same manner.

This embodiment has the following effects.
* In 1st-3rd embodiment, the heating bodies 6 and 9 of both the heating members 5 and 8 can be accommodated in the holder 1, and a thermal welding tool can be reduced in size. Accordingly, it is possible to improve the usability of the heat insulation material for heat insulation material for fluid pipes without being bulky during transportation and storage.

  * In the third embodiment, the projecting dimension L of the heating members 5 and 8 relative to the mouth 2a of the holder 1 is reduced by the expansion and contraction of the inner cylindrical portions 35 and 38 of the arms 7 and 10 of the heating members 5 and 8. Thus, the heat fusion tool can be reduced in size. Accordingly, it is possible to improve the usability of the heat insulation material for heat insulation material for fluid pipes without being bulky during transportation and storage.

  * In the third embodiment, due to the expansion and contraction of the inner cylinder portions 35 and 38 of the arms 7 and 10 of the heating members 5 and 8, the distance between the heating bodies 6 and 9 with respect to the mouth 2a of the holder 1 is set to the fluid pipe M1. It can be changed according to the space around M2. Therefore, the usability of the heat insulating material heat fusion tool for fluid pipes can be improved.

  * In the first to third embodiments, if the heat fusion tool is used, the end surfaces 31a of both heat insulating materials 31 are thermally fused and joined to each other, so that the end surfaces 31a are difficult to separate from each other. A gap is less likely to occur in the joint 33 between the two heat insulating materials 31, and condensation is unlikely to occur on the outer surface 32a of the inner tube 32, thereby preventing water leakage. In the seam 33, the end surfaces 31a of both heat insulating materials 31 are heat-sealed over the entire outer periphery of the inner tube 32, and therefore a gap is further less likely to occur.

  * In the first to third embodiments, since the inner tube 32 is fitted into the insertion hole 29 in the closed state Q of the lower heating body 6 and the upper heating body 9, the lower heating body 6 and the upper heating body 9 are connected to the inner tube. In a state of being stably held with respect to 32, the lower heating body 6 and the upper heating body 9 can be applied to the end surfaces 31a of the two heat insulating materials 31, and the end surfaces 31a can be melted.

  * In the first to third embodiments, when the holder 1 is gripped and the entry / exit operation means 17 and the opening / closing operation means 18 are operated, the lower heating body does not directly touch the lower heating body 6 and the upper heating body 9. 6 and the upper heating body 9 can be opened / closed and opened / closed with each other, facilitating work. In the first and third embodiments, the upper and lower heating members 8 and 5 can be opened / closed and opened / closed simply by operating one operating lever 19, which makes the operation easier.

For example, the following embodiment may be configured as follows.
Although not shown, not all of the heating elements 6 and 9 of the heating members 5 and 8 are accommodated in the holder 1 but a part of the heating elements 6 and 9 is accommodated in the holder 1 or the heating elements 6 and 9 The heating elements 6 and 9 may be moved closer to and away from the mouth 2a of the holder 1 without being housed in the holder 1.

The heating body 9 of the upper heating member 8 may be fixed so as not to rotate, and the heating body 6 of the lower heating member 5 may be rotated, or the heating bodies 6 and 9 may be rotated together.
As the heating means in the heating members 5 and 8, any heating means can be used as long as it can heat the heating surface 30 of the heating bodies 6 and 9, instead of the heater 15 by a heat ray. Hot air by gas can be ejected from many small holes, or the power source of the heater 15 can be a battery. Further, a paste made of tungsten or molybdenum powder and printed almost uniformly on the entire surface of alumina is adopted as a resistor in place of the heat ray.

As the opening / closing operation means 18 for the heating members 5, 8, a finger pad that can open / close the heating bodies 6, 9 is provided instead of the link mechanism described above.
In each of the above embodiments, the heating bodies 6 and 9 of the heating members 5 and 8 have a circumferential angle of 180 degrees, but the heating bodies 6 and 9 may be formed at a circumferential angle of 90 degrees, for example. . In that case, the insertion hole 29 formed between the heating bodies 6 and 9 in the closed state Q becomes a space opened to the outside, and the inner tube 32 inserted in the space is sandwiched between the heating bodies 6 and 9. The heating members 5 and 8 are rotated in a state where the heating surface 30 of the heating bodies 6 and 9 is applied to the end surface 31a of the heat insulating material 31, and the end surface 31a is melted.

  As shown in FIG. 11 (a), the fluid pipes M1 and M2 in which the outer surface 32a of the inner pipe 32 is covered with the cylindrical heat insulating material 31 are divided on both sides in the longitudinal direction of the inner pipe 32. The tubes 32 may be connected in series in the longitudinal direction, and only the heat insulating material 31 may be divided on both sides in the longitudinal direction.

(A) is a right view which shows the accommodation state of the up-and-down heating member with respect to a holder in the heat insulating material heat-fusion tool for fluid pipes concerning 1st Embodiment of this invention, (b) is a partially cut off of (a) FIG. (A) is a right view which shows the closed state of the up-and-down both heating member in the protrusion state with respect to a holder in the heat insulating material heat fusion tool for fluid pipes concerning 1st Embodiment of this invention, (b) is (a) ) Is a partially cutaway right side view, and (c) is a partial front view showing only the upper and lower heating members when (a) is viewed from the front side. (A) is a right view which shows the open state of the up-and-down both heating member in the protrusion state with respect to a holder in the heat insulating material heat fusion tool for fluid pipes concerning 1st Embodiment of this invention, (b) is (a) It is a partially cutaway right side view. (A) is the fragmentary sectional view which looked at the arm of the upper side heating member shown in Drawing 2 (b) from the plane side, (b) looked at the arm of the lower side heating member shown in Drawing 2 (b) from the plane side FIG. 3C is a partial cross-sectional view of the operation lever shown in FIG. 2B viewed from the plane side. (A) is a right view which shows the accommodation state of the up-and-down heating member with respect to a holder in the heat insulating material heat sealing | fusion material for fluid pipes concerning 2nd Embodiment of this invention, (b) is a partially cut off of (a). FIG. (A) is a right view which shows the closed state of the up-and-down both heating member in the protrusion state with respect to a holder in the heat insulating material heat fusion tool for fluid pipes concerning 2nd Embodiment of this invention, (b) is (a). ) Is a partially cutaway right side view, and (c) is a partial front view showing only the upper and lower heating members when (a) is viewed from the front side. (A) is a right view which shows the open state of the up-and-down both heating member in the protrusion state with respect to a holder in the heat insulating material heat fusion tool for fluid pipes concerning 2nd Embodiment of this invention, (b) is (a) It is a partially cutaway right side view. (A) is the fragmentary sectional view which looked at the arm of the upper side heating member shown in Drawing 6 (b) from the plane side, (b) looked at the arm of the lower side heating member shown in Drawing 6 (b) from the plane side FIG. 6C is a partial cross-sectional view of the operation lever shown in FIG. 6B viewed from the plane side. (A) is a partially cut-out right side view showing the accommodation state of the upper and lower heating members with respect to the holder in the heat insulating material heat sealing device for fluid pipes according to the third embodiment of the present invention. It is a partially cutaway right side view showing the closed state of the upper and lower heating members in the protruding state. (A) (b) is a partially cutaway right side view showing the open state of both the upper and lower heating members in a protruding state with respect to the holder in the heat insulating material heat fusion tool for fluid pipes according to the third embodiment of the present invention. is there. (A), (b), and (d) are parts showing the process of joining the separated fluid pipes with a heat insulating material together using the heat insulating material heat fusion tool for fluid pipes according to the first to third embodiments when viewed from the front side. It is a longitudinal cross-sectional view, (c) is a partial top view similarly. It is a longitudinal cross-sectional view which shows a part of fluid pipe | tube with a heat insulating material concerning this embodiment. It is a longitudinal cross-sectional view which shows a part of conventional fluid pipe | tube with a heat insulating material.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Holder, 2 ... Head as attachment part of holder, 2a ... Head part of head, 4 ... Movement guide part of head, 5 ... Lower heating member, 6 ... Heating body of lower heating member, 7 ... Arm of lower heating member, 8. Upper heating member, 9. Heating body of upper heating member, 10. Arm of upper heating member, 11. Movement guide portion of lower arm, 11 a. Rotation center line of upper heating member, 13 ... Split edge, 14 ... Split hole, 15 ... Heater as heating means, 17 ... In / out operation means, 18 ... Opening / closing operation means, 19 ... Operation lever as operation part, 29: Insertion hole, 30: Side surface which is a heating surface, P: Open state of both heating bodies, Q: Closed state of both heating bodies, T: Housing state of heating member, U: Protruding state of heating member, Y: Insertion The center line direction of the hole, R: the rotation direction of the upper heating member, XB, XF: direction.

Claims (7)

Both arms are supported on a holder having a mouth so that the arms can be opened and closed, and a heating body is provided with a heating body supported on the arms at the mouth of the holder. In addition, an insertion hole is formed between the two heating bodies in a closed state that is closed to each other, and at least of both side surfaces formed on the outer periphery of the insertion hole on both sides in the center line direction of the insertion hole in both the heating bodies in the closed state. A heating surface that generates heat by the heating means is provided on one side surface, and a moving guide portion provided between the arm and the holder causes the heating body of both the heating members to approach and separate from the mouth portion of the holder. A tube member covering material heat-sealing tool characterized in that both of the heating members are movably supported with respect to the holder so as to move in the direction. The two heating members take a housing state in which the heating body is brought close to the mouth portion of the holder and housed in the holder, and a projecting state in which the heating body is separated from the mouth portion of the holder and protrudes from the holder. The pipe member covering material heat-sealing tool according to claim 1, which is obtained. 3. The holder is provided with an entry / exit operation means for moving both heating members in / out by an operation on the operation section, and an opening / closing operation means for moving both arms open / close with each other by an operation on the operation section. A pipe member covering material heat fusion tool. The entry / exit operation means is a link mechanism including an operation part, and the opening / closing operation means is a link mechanism including an operation part, and the entry / exit operation means and the opening / closing operation means serve as these operation parts. 4. The covering material heat-sealing device for a pipe member according to claim 3, wherein the link mechanism is operated in series by the operation so that both heating members enter and exit and open and close. Both arms are supported to a holder having a mouth so as to be openable and closable, and both heating members are provided with a heating body supported by both arms at the mouth of the holder. An insertion hole is formed between the two heating elements in the closed state, and at least one of both side surfaces formed on the outer periphery of the insertion hole on both sides in the center line direction of the insertion hole in the two heating elements in the closed state. A heating surface that generates heat by the heating means is provided on the side surface of the heating member, and the arms of both heating members can be extended and retracted so that the heating bodies of both heating members are moved toward and away from the mouth of the holder. A covering material heat-sealing tool for a pipe member, characterized in that it is provided on a tube member. Both arms on the holder side are supported by a mounting portion provided on the holder so as to be capable of relative rotation, and are opened and closed with each other. In both heating members, both heating bodies rotate relative to each other as the arms rotate relative to each other. A split hole for forming the insertion hole is formed in a split edge portion opposed to each other in a rotation direction centering on a rotation center line in a mounting portion of the holder in both the heating bodies that are opened and closed. The covering material heat-sealing tool for pipe members according to any one of claims 1 to 5. The pipe member covering material heat-sealing tool according to claim 6, wherein only the other arm of the two arms on the holder side is opened and closed with respect to one arm positioned on the holder.

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