JP2016123215A - Heat-shrinkable tube mounting device and heat-shrinkable tube mounting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-shrinkable tube mounting device capable of automatically performing processing from insertion to heating of a core member of a heat-shrinkable tube, and a heat-shrinkable tube mounting method.SOLUTION: A tube T that is conveyed by a first conveyance part 3 is inserted from one opening of a guide hole 61a that is provided in a guide block 61. The guide block 61 in which the tube T is inserted is rotated substantially at 90°. After the rotation, a drain line 12b is passed from another opening of the guide hole 61a and the drain line 12b is inserted into the tube T. The drain line 12b that is inserted into the tube T is taken out of the guide block 61 and the drain line 12b inserted into the tube T and taken out of the guide block 61 is conveyed by a second conveyance part 7 in the same direction as the first conveyance part 3 and conveyed to a heating unit 8. The tube T is heated by the heating unit 8 and shrunk.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat-shrinkable tube mounting device and a heat-shrinkable tube mounting method.

  Conventionally, a tube insertion device has been conceived in which a heat-shrinkable tube and a core member are conveyed by a conveying means and inserted into a guide hole of a guide block to automatically insert the core member into the heat-shrinkable tube (patent) Literature 1-7). There has also been proposed a heating device that heats a heat-shrinkable tube through the core member and attaches the heat-shrinkable tube to the core member (Patent Document 8).

  However, the above-described conventional tube insertion device can be automatically performed until the core member is inserted into the heat-shrinkable tube, but it has not been considered to perform it automatically until it is heated by the heating device thereafter.

JP 2009-45699 A JP-A-9-138317 JP-A-7-264742 JP2011-255451A JP-A-8-11026 JP 2003-189439 A JP-A-8-148197 JP 2008-118749 A

  Then, this invention makes it a subject to provide the heat contraction tube attachment apparatus and the heat contraction tube attachment method which can be performed automatically from insertion of the core member of a heat contraction tube to heating.

  The invention according to claim 1 for solving the above-mentioned problem is a guide block provided with a guide hole for inserting a core member into the heat shrinkable tube, and the heat shrinkable tube is conveyed and inserted into the guide hole. A first conveying means for heating, a heating means for heating and shrinking the heat-shrinkable tube in which the core member is inserted, and the heat-shrinkable tube in which the core member is inserted by the guide block are conveyed to the heating means. And a second conveying means.

  The invention according to claim 2 is characterized in that the heating means heats the heat shrinkable tube, tube gripping means for gripping the heat shrinkable tube, and the core member exposed from the heat shrinkable tube on the distal end side. Core gripping means for gripping the heat shrinkable tube, and during heating, the tube gripping means grips the heat shrinkable tube so that the tip of the heat shrinkable tube abuts against the core gripping means and applies a load. It exists in the heat-shrinkable tube attachment apparatus of Claim 1 characterized by the above-mentioned.

  The invention according to claim 3 includes rotation driving means for rotating the guide block by approximately 90 ° after the heat-shrinkable tube is inserted into the guide hole, wherein the guide block and the heating means are the first The heat-shrinkable tube mounting device according to claim 1, wherein the heat-shrinkable tube mounting device is provided side by side along a conveying direction of the conveying means.

  The invention according to claim 4 includes a tube guide disposed between the first transport unit and the guide block, and provided with a tube hole through which the tube transported from the first transport unit passes. The size of the tube hole of the tube guide is variably provided, and the heat-shrinkable tube mounting device according to any one of claims 1 to 3 exists.

  The invention according to claim 5 is a tube insertion step of inserting the heat shrinkable tube conveyed by the first conveying means from one opening of the guide hole provided in the guide block, and the guide into which the heat shrinkable tube is inserted. A rotation step of rotating the block by approximately 90 °, a core insertion step of inserting the core member into the heat shrinkable tube through the core member from the other opening of the guide hole after the rotation, and the heat shrinkage from the guide block An extraction step of taking out the core member inserted into the tube, and a core member inserted into the heat-shrinkable tube taken out from the guide block by the second conveying means in the same direction as the first conveying unit. A conveying step of conveying and conveying to the heating means; and a heating step of heating and shrinking the heat shrinkable tube by the heating means. It consists in heat-shrinkable tube mounting method comprising the.

  As described above, according to the first aspect of the present invention, from the insertion of the core member into the heat shrinkable tube to the heating of the heat shrinkable tube can be automatically performed.

  According to the invention described in claim 2, during the heating, the tube gripping means grips the heat shrinkable tube so that the tip of the heat shrinkable tube abuts against the core gripping means and applies a load. The tip is contracted at the abutting position with the core gripping means, and the heat-shrinkable tube can be positioned.

  According to the third aspect of the present invention, since the rotation driving unit rotates the guide block by approximately 90 ° after the heat shrinkable tube is inserted into the guide hole, the rotation driving unit is approximately 90 ° with respect to the conveyance direction of the first conveyance unit. The core member can be inserted into the guide hole from the direction. This eliminates the need to transport the core member in the direction opposite to the transport direction of the first transport means and insert it into the guide hole, and arrange the guide block and the heating means along the transport direction of the first transport means. Can do. As a result, the second transport unit only needs to transport in the same transport direction as the first transport unit, and the transport path is simplified and simplification can be achieved.

  According to the fourth aspect of the present invention, since the tube hole of the tube guide is variably provided, if the tube hole is reduced in size after the heat-shrinkable tube is inserted into the tube hole, the first The tip of the heat-shrinkable tube conveyed by the conveying means can be corrected toward the guide hole.

  According to the fifth aspect of the present invention, after the heat-shrinkable tube is inserted into the guide hole, the core block is inserted into the guide hole after the guide block is rotated by approximately 90 °. This eliminates the need to transport the core member in the direction opposite to the transport direction of the first transport means and insert it into the guide hole, and arrange the guide block and the heating means along the transport direction of the first transport means. Can do. As a result, the second transport unit only needs to transport in the same transport direction as the first transport unit, and the transport path is simplified and simplification can be achieved.

It is a figure which shows one Embodiment of the heat contraction tube attachment apparatus of this invention. (A)-(D) are figures which show a mode that a heat contraction tube is straightened by the tube guide shown in FIG. 1, and is inserted in the guide hole of a guide block. (A) is a front view of the tube guide at the time of FIG. 2 (A), (B) is a front view of the tube guide at the time of FIG. 2 (B). (A)-(C) are the figures for demonstrating the guide hole provided in the guide block shown in FIG. (A)-(C) is a figure for demonstrating the detail of the tube holding chuck and drain wire holding chuck of the heating unit shown in FIG. It is a figure which shows the heat contraction tube attachment apparatus shown in FIG. 1 when conveying a heat contraction tube toward a guide block. It is a figure which shows the heat contraction tube attachment apparatus shown in FIG. 1 when the conveyed heat contraction tube is inserted in the guide hole of a guide block. It is a figure which shows the heat contraction tube attachment apparatus shown in FIG. 1 when the heat contraction tube inserted in the guide hole of a guide block is cut | disconnected. It is a figure which shows the heat contraction tube attachment apparatus shown in FIG. 1 when a guide block is rotated about 90 degrees after cut | disconnecting a heat contraction tube. It is a figure which shows the heat contraction tube attachment apparatus shown in FIG. 1 when a drain wire is inserted in the guide hole of the guide block rotated 90 degrees. It is a figure which shows the heat shrinkable tube attachment apparatus shown in FIG. 1 when the guide block is released and the drain wire covered with the heat shrinkable tube is taken out. It is a figure which shows the heat contraction tube attachment apparatus shown in FIG. 1 when the drain wire by which the heat contraction tube was covered is conveyed to the heating unit. It is a figure which shows the state which set the drain wire by which the heat-shrinkable tube was armored to the heating unit. It is a figure which shows the heat-shrinkable tube attachment apparatus shown in FIG. 1 when conveying the heat-shrinkable heat-shrinkable tube toward the receiving part. It is a figure which shows the heat shrinkable tube attachment apparatus shown in FIG. 1 when the conveyed drain wire is accommodated in the receiving part.

  Hereinafter, the heat-shrinkable tube mounting device of the present invention will be described with reference to FIGS. The heat-shrinkable tube mounting device shown in FIG. 1 is inserted until a drain wire 12b constituting the shield wire 12 is inserted into a heat-shrinkable tube (hereinafter simply referred to as “tube”), and then the tube is heated and contracted. It is a device that performs automatically. As shown in FIG. 10 and the like, the shield wire 12 bundles a plurality of covered electric wires 12a and a drain wire 12b as a core member, and collectively covers them with a well-known metal foil shield, and further, the outside is covered with an insulating sheath 12c. It covers and configures. The drain line 12b is connected to the metal foil shield.

  As shown in FIG. 1 and the like, the heat shrinkable tube mounting device 1 includes a tube supply roll 2, a first transport unit 3 as a first transport unit, a cutting unit 4, a tube guide 5, and a guide unit 6. And a second transport unit 7 as a second transport unit, a heating unit 8 as a heating unit, a third transport unit 9, and a receiving unit 10. The tube supply roll 2, the first transport unit 3, and the heating unit 8 described above are arranged side by side along the transport direction Y1 of the first transport unit 3 on a base 11 placed on the floor. . In the present embodiment, the transport direction Y1 is a horizontal direction.

  The tube supply roll 2 is composed of a reel 21 around which a tube T is wound. The tube supply roll 2 is arranged so that the longitudinal direction of the tube T pulled out from the reel 21 is along the transport direction Y1.

  The 1st conveyance part 3 conveys the tube T supplied from the tube supply roll 2 to the guide block 61 mentioned later. The first transport unit 3 includes a tube supply chuck 31 and a support unit 32 that supports the tube supply chuck 31. The tube supply chuck 31 is a well-known chuck that detachably holds the tube T drawn from the tube supply roll 2 by a drive source (not shown).

  The support portion 32 is slidably attached to the base 11 along the transport direction Y1. The first transport unit 3 uses a driving source (not shown) to hold the tube T by the tube supply chuck 31 (dotted line in FIG. 4A, FIG. 6) and the gripped tube T to the guide block 61. The tube is slid along the transport direction Y1 between the tube insertion position to be inserted (solid line in FIG. 4A, FIG. 7).

  The cutting part 4 cuts the tube T inserted into the guide block 61. The cutting part 4 has a cutting blade 41, and is provided so that the cutting blade 41 can be slid in the vertical direction Y2 by a driving source (not shown). The cutting blade 41 has a distal end positioned on a side farther from the base 11 than the tube T (FIG. 7), and a distal end located on the base 11 side from the tube T to cut the tube T. It is slid along the vertical direction Y2 between the cutting position (FIG. 8).

  The tube guide 5 is a guide for straightening the tube T transported by the first transport unit 3 along the transport direction Y1. The tube guide 5 is disposed between the first transport unit 3 and the guide unit 6. The tube guide 5 has a pair of guide plates 51 as shown in FIGS. Each of the pair of guide plates 51 is provided perpendicular to the transport direction Y1, and is slidable in an orthogonal direction Y3 (FIG. 3) orthogonal to both the transport direction Y1 and the vertical direction Y2 by a drive source (not shown).

  Each of the pair of guide plates 51 is provided with a V-shaped recess 51a as shown in FIG. When the pair of guide plates 51 are slid in a direction approaching each other, as shown in FIG. 2B, FIG. 3B, etc., a part of the guide plates 51 overlaps the transport direction Y1, and the tube hole through which the tube T is passed by the recess 51a. 52 is formed. The tube holes 52 become smaller as the pair of guide plates 51 are brought closer to each other. That is, the tube hole 52 is variably provided in size.

  The center of the tube hole 52 and the center of a guide hole 61a of the guide block 61 described later are disposed coaxially along the transport direction Y1. As a result, as shown in FIGS. 2 (A) and 3 (A), since the wire is wound around the reel 21, even if the tip of the tube T is bent, if the tube hole 52 is enlarged, the tube hole 52 becomes The tip of the tube T can be easily inserted. Thereafter, as shown in FIGS. 2B and 3B, when the pair of guide plates 51 are brought close to each other and the tube hole 52 is made smaller, the tip of the tube T is straightened along the transport direction Y1. be able to.

  The guide unit 6 inserts the drain wire 12b into the tube T, and covers the tube T on the drain wire 12b. The guide unit 6 includes a guide block 61, a tube holding chuck 62, and a drain wire abutting plate 63. The guide block 61 is provided with a guide hole 61a for inserting the drain wire 12b into the tube T. The guide hole 61a is provided through the guide block 61. As shown in FIG. 4, the tube T is inserted from one opening 61a1, and the drain line 12b is inserted from the other opening 61a2.

  The opening 61a1 of the guide hole 61a is larger than the outer diameter of the tube T. The inner surface of the guide hole 61a is provided with a tapered surface 61a3 inclined so that the guide hole 61a becomes smaller from the opening 61a1 toward the opening 61a2, and on the opening 61a2 side than the tapered surface 61a3. Is provided with a straight surface 61a4 that is substantially the same as the outer diameter of the tube T and is constant in the penetrating direction.

  The opening 61a2 of the guide hole 61a is larger than the outer diameter of the drain wire 12b. The inner surface of the guide hole 61a is provided with a tapered surface 61a5 that is inclined so that the guide hole 61a becomes smaller from the opening 61a2 toward the opening 61a1, and on the opening 61a1 side than the tapered surface 61a5. Is provided with a straight surface 61a6 that is substantially the same as the outer diameter of the drain wire 12b and is constant in the penetrating direction. A step surface is formed between the straight surfaces 61a4 and 61a6, and this step surface serves as a contact surface 61a7 that contacts the tip of the tube T.

  Further, the guide block 61 is a tube in which a tube T is inserted by a rotation drive source (= rotation drive means) (not shown) so that the guide hole 61a passes through the conveyance direction Y1 as shown in FIGS. As shown in FIGS. 9 and 10, the insertion position and the drain line insertion position where the drain line 12b is inserted with the penetration direction of the guide hole 61a along the vertical direction Y2 are rotatably provided. .

  Further, as shown in FIG. 4C, the guide block 61 includes a pair of block bodies 61b divided into two in the orthogonal direction Y3. The pair of block bodies 61b are brought close to each other by a driving source (not shown) to form a guide hole 61a, a release position for taking out the drain wire 12b and the tube T inserted into the guide hole 61a apart from each other, It is provided so that it can move along the orthogonal direction Y3.

  As shown in FIG. 1, the tube holding chuck 62 is provided closer to the base 11 than the guide block 61, and the tube T protruding from the guide block 61 at the drain line insertion position can be attached and detached by a drive source (not shown). It is a well-known chuck to be gripped. The tube holding chuck 62 is slidable in the orthogonal direction Y3 together with any one of the pair of block bodies 61b by a driving source (not shown).

  That is, when the pair of block bodies 61b are in the insertion position, the tube holding chuck 62 is positioned at a position where the tube holding chuck 62 can be gripped from both sides of the transport direction Y1 by approaching the tube T. On the other hand, when the pair of block bodies 61b are in the release position, the tube holding chuck 62 is positioned at a position where the drain wire 12b that covers the tube T apart from the tube T can be transported in the transport direction Y1.

  The drain wire abutting plate 63 is provided closer to the base 11 than the guide block 61 and the tube holding chuck 62, and abuts against the tip of the drain wire 12b projecting from the guide block 61 at the drain wire insertion position. The drain wire butting plate 63 is provided so as to be orthogonal to the vertical direction Y2.

  The second transport unit 7 transports the drain wire 12 b covered with the tube T to the heating unit 8. The second transport unit 7 includes a drain wire chuck 71 and an electric wire chuck 72. The drain wire chuck 71 is provided closer to the base 11 than the tube holding chuck 62. As shown in FIG. 11, the drain wire 12b exposed from the tube T on the distal end side is detachably gripped by a driving source (not shown). This is a known chuck.

  The drain wire chuck 71 includes a pair of chuck bodies 71a that grip the drain wire 12b with both sides of the transport direction Y1 of the drain wire 12b interposed therebetween. The pair of chuck bodies 72a are, for example, a gripping position for gripping the drain wire 12b by bringing one end of the orthogonal direction Y3 close to each other and a release position for releasing the gripping of the drain wire 12b by separating the one end from each other by a driving source (not shown). Are provided so as to be rotatable around the other end in the orthogonal direction Y3. Thus, by providing the other end portion in the orthogonal direction Y3 so as to be rotatable, the pair of chuck bodies 71a can be slid in the transport direction Y1 when the pair of chuck bodies 71a are set to the release positions.

  Further, the drain wire chuck 71 grips the drain wire 12b exposed from the tube T on the tip side, so that the tube T does not come into contact with the drain wire chuck 71 and falls off from the drain wire 12b.

  The electric wire chuck 72 is a known chuck that detachably holds the sheath 12c of the shielded wire 12. The electric wire chuck 72 includes a pair of chuck bodies 72a that hold the sheath 12c with both sides of the sheath 12c in the transport direction Y1 interposed therebetween. The pair of chuck bodies 72a has a gripping position (FIG. 11) for gripping the sheath 12c with one end (upper part in the present embodiment) in the vertical direction Y2 approaching each other by a drive source (not shown), and the sheath 12c with one end separated from each other. The other end is rotatably provided between the release position (FIG. 1) for releasing the grip. The drain wire chuck 71 and the electric wire chuck 72 are provided so as to be slidable along the transport direction Y1 by a drive source (not shown), and transport the drain wire 12b covered with the tube T from the guide unit 6 to the heating unit 8.

  The heating unit 8 heats and contracts the tube T sheathed on the drain wire 12b transported by the second transport unit 7. The heating unit 8 includes a heater 81 as a heat source, an electric wire chuck 82, a tube holding chuck 83 as a tube holding means, and a drain wire holding chuck 84 as a core holding means.

  The heater 81 heats and shrinks the tube T by applying hot air to the tube T covered with the drain wire 12b. The electric wire chuck 82 is a well-known chuck that detachably holds the sheath 12c of the shielded wire 12 conveyed to the heating unit 8 by the second conveying unit 7. The electric wire chuck 82 includes a pair of chuck bodies 82a that hold the sheath 12c with both sides of the sheath 12c in the transport direction Y1 interposed therebetween. The pair of chuck bodies 82a has a gripping position (FIG. 13) in which one end (in the present embodiment) in the vertical direction Y2 is brought close to each other by a driving source (not shown) to grip the sheath 12c, and one end is separated from the sheath 12c. The other end is rotatably provided between the release position (FIG. 12) and the release position.

  The tube holding chuck 83 is a well-known chuck that detachably holds the tube T sheathed on the drain wire 12b. As shown in FIG. 5, the tube holding chuck 83 includes a pair of chuck bodies 83a for gripping the tube T and a support portion 83b for supporting the pair of chuck bodies 83a across the both sides of the transport direction Y1 of the tube T. It is configured.

  As shown in FIG. 5, the pair of chuck bodies 83a is provided in a flat plate shape orthogonal to the vertical direction Y2, and each has a recess 83c (FIG. 5C). The pair of chuck bodies 83a is provided with a gripping position in which one end of the orthogonal direction Y3 is brought close to each other by a driving source (not shown) to grip the tube T between the recesses 83c, and a release position in which the one end is separated from each other and the tube T is released. In the meantime, the other end is rotatably supported by the support portion 83b.

  As shown in FIG. 5A, the tube holding chuck 83 is slidable along a direction in which the tube holding chuck 83 is in contact with or separated from the drain wire holding chuck 84 (the vertical direction Y2 in this embodiment). The tube holding chuck 83 is moved closer to the drain line holding chuck 84 after being held by a driving source (not shown) and holding the tube T transferred by the second transfer unit 7 (dotted line in FIG. 5A). Then, the pair of chuck bodies 83a are slid in the vertical direction Y2 between the position where the tip of the tube T abuts against the drain wire holding chuck 84 and a load is applied (solid line in FIG. 5A).

  As shown in FIG. 5C, the chuck-to-chuck distance L1 in the transport direction Y1 between the recesses 83c at the holding position is larger than the diameter of the drain wire 12b and smaller than the diameter of the tube T. As a result, the tube holding chuck 83 grips and slides only the tube T and prevents the drain wire 12b from being pulled.

  The drain wire holding chuck 84 is a chuck for gripping the drain wire 12b exposed from the tube T on the distal end side. As shown in FIG. 5, the drain wire holding chuck 84 is composed of a pair of chuck bodies 84a for gripping the drain wire 12b. The pair of chuck bodies 84a are provided so as to be able to contact and separate from each other in the orthogonal direction Y3 by a drive source (not shown).

  Each of the pair of chuck bodies 84a is provided with a gripping groove (not shown) for gripping the drain wire 12b along the orthogonal direction Y3, and the gripping grooves extend to opposite ends of the pair of chuck bodies 84a. ing. When the pair of chuck bodies 84a are brought close to each other, the drain wire 12b is inserted into the gripping grooves provided in the chuck bodies 84a and chucked.

  The third transport unit 9 transports the shield wire 12 in which the tube T is heated by the heating unit 8 to the receiving unit 10. The third transport unit 9 includes a first electric wire chuck 91 and a second electric wire chuck 92. The first electric wire chuck 91 is a well-known chuck that holds the sheath 12c of the shielded wire 12 and conveys it to the second electric wire chuck 92 described later after the heating by the heating unit 8 is completed. Therefore, it is slidable along the transport direction Y1.

  The first electric wire chuck 91 includes a pair of chuck bodies 91a that grip the sheath 12c with both sides of the sheath 12c in the transport direction Y1 being sandwiched. The pair of chuck bodies 91a is configured so that a driving source (not shown) brings the one end portion (upper portion in the present embodiment) in the vertical direction Y2 close to each other and the holding position (FIG. 13). The other end is rotatably provided between the release position (FIG. 12) and the release position.

  The first electric wire chuck 91 is interlocked with the electric wire chuck 72 of the second transport unit 7. More specifically, when the wire chuck 72 grips the sheath 12 c of the shielded wire 12 inserted into the guide block 61, the first wire chuck 91 grips the sheath 12 c of the shielded wire 12 heated by the heating unit 8. Thereafter, as shown in FIG. 12, when the wire chuck 72 slides from the guide block 61 to the heating unit 8, the first wire chuck 91 also slides from the heating unit 8 toward the second wire chuck 92. Next, as shown in FIG. 13, when the wire chuck 72 releases the sheath 12 c and then returns to the guide unit 6, the first wire chuck 91 also releases the sheath 12 c and returns to the heating unit 8. Return.

  The second electric wire chuck 92 is a well-known chuck that holds the sheath 12c of the shielded wire 12 conveyed by the first electric wire chuck 91 and conveys it to the receiving portion 10 described later. It is slidable along the direction Y2.

  The second electric wire chuck 92 includes a pair of chuck bodies 92a that hold the sheath 12c with both sides of the sheath 12c in the transport direction Y1 interposed therebetween. The pair of chuck bodies 92a has a gripping position (FIG. 14) for gripping the sheath 12c by bringing one end (the lower part in this embodiment) in the vertical direction Y2 close to each other, and a release position for releasing the sheath 12c by separating one end from each other. The other end is rotatably provided with respect to FIG. Further, the second electric wire chuck 92 is close to the receiving portion 10 and a position where the sheath 12c of the shielded wire 12 conveyed by the first electric wire chuck 91 can be gripped by a driving source (not shown) and the sheath 12c. And the position where the shield wire 12 is accommodated in the receiving portion 10 (FIG. 15).

  Next, operation | movement of the heat contraction tube attachment apparatus 1 of the structure mentioned above is demonstrated with reference to FIGS. In FIG. 6 to FIG. 15, portions that are not necessary for explanation are omitted. First, as shown in FIG. 6, the guide block 61 is positioned at a tube insertion position in which the penetration direction of the guide hole 61 a is aligned with the transport direction Y1. The tube supply chuck 31 is positioned at the tube gripping position.

  As shown in FIG. 6, the tube supply chuck 31 grips a portion slightly away from the tip of the tube T supplied from the tube supply roll 2. Next, the tube supply chuck 31 is slid in the transport direction Y1 and positioned at the tube insertion position as shown in FIG. 7 (tube insertion step). As a result, the tip of the tube T enters the guide hole 61a from the opening 61a1 and comes into contact with the contact surface 61a7. Note that the tube insertion position of the tube supply chuck 31 is closer to the conveyance direction Y1 than the cutting unit 4 is.

  Further, while the tube supply chuck 31 is slid from the tube gripping position to the tube insertion position, the size of the tube hole 52 of the tube guide 5 is increased as shown in FIGS. 2 (A), (B), and FIG. Decrease gradually. Thereby, the front-end | tip part of the tube T can be straightened, and it becomes easy to insert the front-end | tip of the tube T in the guide hole 61a. As shown in FIG. 2C, when the tip of the tube T is inserted into the guide hole 61a, the pair of guide plates 51 are separated from each other as shown in FIG. The tube supply chuck 31 advances to a tube insertion position through a pair of guide plates 51 that are separated from each other.

  After positioning the tube supply chuck 31 at the tube insertion position, the cutting blade 41 is slid from the standby position (FIG. 7) to the cutting position (FIG. 8) to cut the tube T. After cutting, the cutting blade 41 is returned to the standby position again (FIG. 9). Further, after cutting, the grip of the tube supply chuck 31 is released. Then, as shown in FIG. 9, the guide block 61 is rotated by approximately 90 ° to position the penetration direction of the guide hole 61 a at the drain line insertion position along the vertical direction Y <b> 1 (rotation process). At this time, the guide block 61 is rotated by approximately 90 ° so that the opening 61a1 is on the lower side and the opening 61a2 is on the upper side. Thereafter, the tube T protruding from the guide block 61 is gripped by the tube holding chuck 62. By holding the tube holding chuck 62, the tube T can be straightened.

  Further, as shown in FIG. 9, after releasing the grip of the tube supply chuck 31, the guide block 61 is positioned at the drain insertion position and the tube supply chuck 31 is held until the tube T is gripped by the tube holding chuck 62. Return to the tube grip position.

  From the tube insertion process to the rotation process described above, a drive source (not shown) is controlled automatically by a control means such as a microcomputer. After the rotation process is finished, the movement of the heat-shrinkable tube mounting device 1 is temporarily stopped.

  Thereafter, as shown in FIG. 10, the drain line 12b of the shield wire 12 is manually inserted into the guide hole 61a from the opening 61a2 of the guide block 61 (drain line insertion step = core insertion step). The drain line 12b inserted from the opening 61a2 of the guide block 61 is inserted into the tube T and protrudes outside the guide block 61 from the opening 61a1. Then, the protruding tip is abutted against the drain wire abutting plate 63.

  In addition, the shield wire 12 removes the sheath 12c at the tip in advance to expose the tips of the plurality of covered electric wires 12a and drain wires 12b. Then, the drain wire 12b is inserted into the guide block 61 in a state where the drain wire 12b is bent at approximately 90 ° with respect to the plurality of covered electric wires 12a. Therefore, although the drain line 12b is along the vertical direction Y2, the portion covered by the sheath 12c is in a state along the orthogonal direction Y3.

  After the drain wire 12b is inserted into the guide block 61, when the operator operates an operation button (= operation means) (not shown), the operation of the heat-shrinkable tube mounting device 1 is started again.

  When the operation button is operated, as shown in FIG. 11, the drain wire chuck 71 and the electric wire chuck 72 of the second transport unit 7 grip the tip of the drain wire 12b and the sheath 12c. Thereafter, the holding of the tube T by the tube holding chuck 62 is released, the pair of guide bodies 61b and 61c of the guide block 61 are separated from each other, and slid from the insertion position to the release position, and the drain wire 12b is removed from the guide block 61. Take out (extraction process).

  Thereafter, as shown in FIG. 12, the shield wire 12 held by the drain wire chuck 71 and the wire chuck 72 is slid toward the heating unit 8 (conveying step). At this time, the drain line 12b is conveyed to the heating unit 8 through a pair of guide bodies 61b and 61c separated from each other.

  After being conveyed to the heating unit 8, as shown in FIG. 13, the sheath 12 c is gripped by the electric wire chuck 82, the tube T covered on the drain wire 12 b is gripped by the tube holding chuck 83, and the drain wire holding chuck 84 is used. The drain line 12b is held. Thereafter, the tube holding chuck 83 is brought close to the drain wire holding chuck 84 and the tip of the tube T is abutted against the drain wire holding chuck 84 to apply a load. In a state where a load is applied, hot air is applied to the tube T by the heater 81 to shrink the tube T (heating step).

  In addition, after the sheath 12c, the tube T, and the drain wire 12b are gripped by the electric wire chuck 82, the tube holding chuck 83, and the drain wire holding chuck 84, a pair of chuck bodies of the drain wire chuck 71 that constitutes the second transfer unit 7. The pair of chuck bodies 72a of 71a and the wire chuck 72 are set to the release position, and the grip of the drain wire 12b and the sheath 12c is released, and then returned to the guide unit 6.

  After the heating, the sheath 12c is held by the first electric wire chuck 91, and the holding of the sheath 12c, the tube T, and the drain wire 12b by the electric wire chuck 82, the tube holding chuck 83, and the drain wire holding chuck 84 is released. Thereafter, the first electric wire chuck 91 is slid toward the second electric wire chuck 92. When the shield wire 12 is conveyed to the second electric wire chuck 92 by the first electric wire chuck 91, the second electric wire chuck 92 grips the sheath 12c and the first electric wire chuck 91 is moved as shown in FIG. The grasping of the sheath 12c is released, and the process returns to the heating unit 8. Thereafter, as shown in FIG. 15, the second electric wire chuck 92 slides vertically downward to release the sheath 12 c and accommodate the shielded wire 12 in which the tube T is heated and contracted in the receiving portion 10.

  In order to shorten the cycle time by performing a part of the above-described processes in parallel, as shown in FIG. 9, the tube supply chuck 31 returns to the tube gripping position after releasing the gripping of the tube T, and supplies the tube. The tube T supplied from the roll 2 is gripped. Also, as shown in FIG. 12, when the shield wire 12 is conveyed from the guide unit 6 to the heating unit 8 by the second conveying unit 7, the guide block 61 is again rotated by approximately 90 ° to the tube insertion position. Then, the tube T is inserted into the guide block 61.

  Further, in parallel with the conveyance of the shield wire 12 from the guide block 61 to the heating unit 8 by the second conveyance unit 7, from the heating unit 8 of the shield wire 12 by the first electric wire chuck 91 to the second electric wire chuck 92. Is being transported.

  In the present embodiment, the operation of inserting the drain line 12b is performed manually. For this reason, the movement of each part of the heat-shrinkable tube mounting device 1 described above is automatically performed by a drive source (not shown). However, when the guide block 61 is positioned at the drain line insertion position as shown in FIGS. Then, the movement of the heat-shrinkable tube mounting device 1 stops. Thereafter, after the operator inserts the drain wire 12b into the guide hole 61a, when the operation button is pressed, the heat-shrinkable tube mounting device 1 resumes movement.

  According to the embodiment described above, the first transport unit 3 transports the tube T to the guide unit 6, and the second transport unit 7 includes the drain wire 12 b in which the tube T is sheathed from the guide unit 6 to the heating unit 8. Transport. Thereby, from the insertion of the drain wire 12b into the tube T to the heating of the tube T can be automatically performed.

  Further, according to the above-described embodiment, the tube holding chuck 83 grips the tube T so that the tip of the tube T abuts against the drain wire holding chuck 84 and applies a load during heating. The tip is contracted at the abutting position with the drain wire holding chuck 84, and the tube T can be positioned.

  Further, according to the above-described embodiment, the guide block 61 is rotated by approximately 90 ° after the tube T is inserted into the guide hole 61a by the rotation driving means (not shown), so that the transport direction Y1 of the first transport unit 3 is The drain wire 12b can be inserted into the guide hole 61a from the direction of approximately 90 °. This eliminates the need to transport the drain wire 12b to the opposite side of the transport direction Y1 of the first transport unit 3 and insert it into the guide hole 61a, so that the guide block 61 and the heating unit 8 can be connected to the first transport unit 3. They can be arranged along the transport direction Y1. As a result, the second transport unit 7 only needs to transport in the same transport direction Y1 as the first transport unit 3, and the transport path is simplified and simplification can be achieved.

  Further, according to the above-described embodiment, since the tube hole of the tube guide 5 is variably provided, if the tube hole is reduced after the tube T is inserted into the tube hole, the first The tip of the tube T conveyed by the conveying unit 3 can be corrected toward the guide hole 61a.

  According to the above-described embodiment, the drain wire 12b constituting the shield wire 12 is used as the core member. However, the present invention is not limited to this. A core wire such as a twisted wire or a captyre cable may be used as the core member, and a coil or the like may be used as the core member.

  Further, according to the above-described embodiment, the drain wire 12b is manually inserted into the guide block 61, but the present invention is not limited to this. Similarly to the tube T, the guide block 61 may be automatically inserted.

  Further, according to the above-described embodiment, during the heating, the tube holding chuck 83 grips the tube T so that the tip of the tube T abuts against the drain wire holding chuck 84 and applies a load. Not a thing. It is sufficient that the drain wire 12b and the tube T are gripped during heating, and no load is applied.

  Further, according to the above-described embodiment, the guide block 61 is rotated by approximately 90 °, but the present invention is not limited to this. It is also conceivable that the heating unit 8 and the guide unit 6 are provided side by side in the orthogonal direction Y3 without rotating the guide block 61, and the second transport unit 7 is slidable in the orthogonal direction Y3.

  Moreover, according to embodiment mentioned above, although what was wound around the tube supply roll 2 was used as the tube T, it is not restricted to this. If there is no problem in cost, a short tube T cut in advance may be transported. For this reason, the cutting part 4 is not essential. Further, since the tube T is not warped by the reel 21, the tube guide 5 is not essential.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Heat-shrinkable tube mounting apparatus 3 1st conveyance part (1st conveyance means)
5 Tube guide 7 2nd conveyance part (2nd conveyance means)
8 Heating unit (heating means)
81 Heater (heat source)
83 Tube holding chuck (Tube gripping means)
84 Drain wire holding chuck (core gripping means)
12b Drain wire (core member)
52 Tube hole 61 Guide block 61a Guide hole T Heat shrink tube Y1 Conveying direction

Claims (5)

A guide block provided with a guide hole for inserting the core member into the heat shrinkable tube;
First conveying means for conveying the heat-shrinkable tube and inserting it into the guide hole;
Heating means for heating and contracting the heat-shrinkable tube into which the core member is inserted;
Second conveying means for conveying the heat shrinkable tube into which the core member is inserted by the guide block to the heating means;
A heat-shrinkable tube mounting device comprising: The heating means heats the heat shrinkable tube, tube gripping means for gripping the heat shrinkable tube, core gripping means for gripping the core member exposed from the heat shrinkable tube on the tip side, Have
2. The heat according to claim 1, wherein the tube gripping means grips the heat-shrinkable tube so as to apply a load by abutting the tip of the heat-shrinkable tube against the core gripping means during heating. Shrink tube mounting device. Rotation drive means for rotating the guide block by approximately 90 ° after the heat-shrinkable tube is inserted into the guide hole;
The heat-shrinkable tube mounting device according to claim 1, wherein the guide block and the heating unit are provided side by side along a conveyance direction of the first conveyance unit. A tube guide disposed between the first transport unit and the guide block, and provided with a tube hole for passing the tube transported from the first transport unit;
The size of the tube hole of the said tube guide was provided variably. The heat contraction tube attachment apparatus of any one of Claims 1-3 characterized by the above-mentioned. A tube insertion step of inserting the heat-shrinkable tube conveyed by the first conveying means from one opening of the guide hole provided in the guide block;
A rotation step of rotating the guide block in which the heat-shrinkable tube is inserted approximately 90 °;
After rotation, the core insertion step of inserting the core member into the heat shrinkable tube through the core member from the other opening of the guide hole,
An extraction step of taking out the core member inserted into the heat shrinkable tube from the guide block;
A transporting step of transporting the core member inserted into the heat-shrinkable tube taken out from the guide block by the second transporting means in the same direction as the first transporting unit, and transporting to the heating means;
A heating step of heating and shrinking the heat-shrinkable tube by the heating means;
A heat shrinkable tube mounting method characterized by comprising:

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