JP2009059673A - Harness protective tube mounting machine and harness protective tube mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly and surely mount a harness protective tube on a wire harness efficiently. <P>SOLUTION: A harness protective tube mounting machine 1 for mounting a harness protective tube 2 having a slit 2b in a long side direction on a wire harness 10 from a slit side opening along an outer face of guide members 3, 4, 17 includes tube feeding means 19, 20, 21 for moving the guide members in a direction crossing the wire harness and for feeding the harness protective tube in a state that a tip side part 17 of the guide member is covered on the wire harness to mount the harness protective tube on the wire harness. In the vicinity of the tip side part 17 of the guide member, a harness convergence part 24 for converging the wire harness is provided. The guide member or the harness convergence part 24 are made to be displaced in an opposite direction from a feeding direction of the harness protective tube. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a harness protection tube mounting machine and a harness protection tube mounting method for mounting a protective tube having a slit on the outer periphery of a wire harness.

  FIG. 12 shows one form of a conventional harness protection tube mounting tool (see Patent Document 1).

  This harness protection tube mounting tool 71 is made of a flexible resin plate bent in a U-shaped cross section, and has an outward flange portion 74 on the inclined upper side 73 of the opposing left and right substantially triangular wall portions 72. Is provided. A protective tube mounting tool 71 is set from the lower side with respect to the wire harness 75, and a synthetic resin corrugated tube 76, which is a harness protective tube having a slit in the longitudinal direction, is slanted from above to below along the both flange portions 74. It is guided to insert.

  FIG. 13 shows another form of a conventional harness protection tube fitting (see Patent Document 2).

  The harness protection tube mounting tool 61 includes a cylindrical harness insertion portion 63 through which the electric wire 62 is inserted, a cylindrical tube guide portion 64 integrally formed obliquely upward from one end side of the harness insertion portion 63, and a harness. It has a clip-like grip 65 that protrudes downward from the insertion portion 63 and opens the harness insertion portion 63 and the tube guiding portion 64 on the upper side by a grip operation against the urging force of the spring 67 in the closing direction.

  The tube guiding portion 64 communicates with the harness insertion portion 63, and is divided together with the harness insertion portion 63 on the lower grip portion 65 side, and can be opened and closed with the lower hinge portion as a fulcrum. An opening is formed. The electric wire 62 can be selectively inserted into both the harness insertion part 63 and the guide part 64 from the opening. A plurality of electric wires 62 constitute a wire harness. Note that “upper and lower” corresponds to the direction when the tube is inserted.

After the harness insertion portion 63 is opened and the electric wire 62 is inserted, the harness insertion portion 63 is closed, and a protective tube 66 made of synthetic resin having a slit in the longitudinal direction is extended from the distal end side of the tube guide portion 64 along the tube guide portion 64. Insert the slide. The slit of the protective tube 66 is opened from the tube guiding portion 64 along the harness insertion portion 63, and the electric wire 62 is inserted into the protective tube 66 from the slit.
JP-A-7-245840 (FIG. 1) JP 2004-48927 A (FIGS. 16 and 18)

  However, in each of the conventional harness protection tube fittings 71 and 61, the worker must manually attach the harness protection tubes 76 and 66 to the wire harness (a plurality of wires) 75 and 62. In addition, a large space is required and work must be performed in a narrow space between the work tables (not shown) below the wire harnesses 75 and 62, and the protective tubes 76 and 66 can be secured. There is a problem that the user needs to be accustomed to attaching the protective tube, and the burden on the operator is large, and the attachment workability and the attachment efficiency (productivity of the wire harness product) of the protective tubes 76 and 66 are poor.

  An object of this invention is to provide the harness protection tube mounting machine and the harness protection tube mounting method which can mount a harness protection tube to a wire harness efficiently, smoothly and reliably in view of the above-mentioned point.

  In order to achieve the above object, a harness protection tube mounting machine according to claim 1 of the present invention provides a wire harness from the slit side opened along the outer surface of the guide member, with the harness protection tube having a slit in the longitudinal direction. A harness protection tube mounting machine to be mounted, wherein the guide member is moved in a direction crossing the wire harness, and the harness protection tube is sent out in a state where the tip side portion of the guide member is covered with the wire harness. It is characterized by comprising a tube feeding means to be attached to the wire harness.

  With the above configuration, the harness protection tube is transferred along the guide member by the tube feeding means, while the slit is opened along the outer surface of the guide member to enlarge the inner diameter of the tube, the outer surface of the guide member on the outer surface of the distal end side portion. Along the outer periphery of the wire harness, it is automatically mounted. The guide member may be the second guide member in the following embodiment, or may be an integrated first and second guide member. The tip side portion of the guide member is a third guide member in the following embodiment. The tube feeding means may be one roller, two rollers or a belt. The movement of the guide member to the wire harness may be performed by driving means, or a handy type may be performed manually. The wire harness is previously arranged on the work table.

  The harness protection tube mounting machine according to claim 2 is the harness protection tube mounting machine according to claim 1, wherein the tube feeding means is arranged along a bent inner surface of the harness protection tube intersecting the wire harness. It is characterized by.

  With the above configuration, since the harness protection tube is driven by the tube feeding means at the bent portion intersecting the wire harness, the harness protection tube is reliably fed to the final end of the harness protection tube and attached to the wire harness.

  A harness protection tube mounting machine according to claim 3 is the harness protection tube mounting machine according to claim 1 or 2, further comprising a harness converging tool for converging the wire harness in the vicinity of a distal end portion of the guide member. Features.

  With the above configuration, each electric wire of the wire harness is converged to a small diameter without breaking, and in that state, the wire harness is securely accommodated inside the distal end side portion of the guide member, and the harness protection tube is not left behind (excessive). It is securely attached to the wire harness with a small sliding resistance.

  The harness protection tube mounting machine according to claim 4 is the harness protection tube mounting machine according to any one of claims 1 to 3, wherein a distal end portion of the guide member has flexibility in a closing direction, and the harness The protective tube is biased in the closing direction by the restoring force of the slit.

  With the above configuration, the distal end portion of the guide member is pushed in the closing direction by the closing force of the harness protection tube with the wire harness inserted inward, and when the number of wires in the wire harness is small, the distal end portion is closed and the wire is The harness is securely held, and when the number of wires is large, the wire harness is securely held in close contact with the wire harness by the force in the closing direction without closing.

  The harness protection tube mounting method according to claim 5 is a harness protection tube mounting method in which a harness protection tube having a slit in a longitudinal direction is mounted on a wire harness from the slit side opened along the outer surface of the guide member, The guide member is moved in a direction crossing the wire harness, and the harness protection tube is sent out by the tube feeding means and attached to the wire harness in a state where the tip end portion of the guide member is covered on the wire harness. It is characterized by.

  With the above configuration, the harness protection tube is transferred along the guide member by the tube feeding means, while the slit is opened along the outer surface of the guide member to enlarge the inner diameter of the tube, the outer surface of the guide member on the outer surface of the distal end side portion. Along the outer periphery of the wire harness, it is automatically mounted. The guide member may be the second guide member in the following embodiment, or may be an integrated first and second guide member. The tip side portion of the guide member is a third guide member in the following embodiment. The tube feeding means may be one roller, two rollers or a belt. The movement of the guide member to the wire harness may be performed by driving means, or a handy type may be performed manually. The wire harness is previously arranged on the work table.

  The harness protection tube mounting method according to claim 6 is the harness protection tube mounting method according to claim 5, wherein the wire harness is converged by a harness convergence tool in the vicinity of the distal end portion of the guide member. It is characterized by sending out.

  With the above configuration, each electric wire of the wire harness is converged to a small diameter without breaking, and in that state, the wire harness is securely accommodated inside the distal end side portion of the guide member, and the harness protection tube is not left behind (excessive). It is securely attached to the wire harness with a small sliding resistance.

  According to a seventh aspect of the present invention, there is provided the harness protection tube mounting method, wherein the guide member according to the fifth aspect or the guide member according to the sixth aspect and the harness converging tool are moved in a direction opposite to a feeding direction of the harness protection tube. It is characterized by.

  With the above configuration, the sliding resistance between the wire harness and the harness protection tube is reduced, and the harness protection tube is smoothly attached with a small force. In addition, if the friction between the wire harness and the tip of the harness protection tube attached to it is large, the harness protection tube can be attached to the wire harness at a speed that combines the harness protection tube feed speed and the movement speed of the guide member, etc. Become.

  The harness protection tube mounting method according to claim 8 is characterized in that, in the harness protection tube mounting method according to claim 7, the speed of feeding out the harness protection tube and the speed of movement are the same.

  With the above configuration, since the feeding speed of the harness protection tube is the same as the movement speed of the guide member, sliding between the wire harness and the protection tube is eliminated. Therefore, the damage due to the sliding resistance between the wire harness and the harness protection tube is eliminated, and the quality is improved.

  According to the first aspect of the invention, the harness protection tube can be automatically and efficiently attached to the wire harness. This eliminates the need for conventional manual tube mounting work, and improves the productivity and cost reduction of wire harness products.

  According to invention of Claim 2, even if it is a short harness protection tube, it can be reliably attached to a wire harness automatically until the last.

  According to invention of Claim 3, a harness protection tube can be smoothly and reliably mounted | worn with a small force without the protrusion of the electric wire of a wire harness.

  According to the invention of claim 4, even when the diameter of the wire harness is different, the wire harness is securely held at the tip end portion of the guide member, so that the harness protection tube can be smoothly and securely attached to the wire harness along the tip end portion. It can be attached securely.

  According to the invention described in claim 5, the harness protection tube can be automatically and efficiently attached to the wire harness. This eliminates the need for conventional manual tube mounting work, and improves the productivity and cost reduction of wire harness products.

  According to the sixth aspect of the present invention, the harness protection tube can be attached smoothly and reliably with a small force without protruding the wire of the wire harness.

  According to the invention described in claim 7, since the sliding resistance between the wire harness and the harness protection tube is reduced, the harness protection tube can be smoothly mounted with a small feeding force. In addition, the harness protection tube can be attached to the wire harness at a higher speed than the case where the guide portion or the like is not moved in the opposite direction for reasons including reduction of the sliding resistance.

  According to the invention described in claim 8, since the feeding speed of the harness protection tube and the movement speed of the guide member are the same, the sliding between the wire harness and the protection tube is eliminated, and the wire harness and the harness protection tube Scratching due to sliding resistance is prevented and quality is improved.

  1 to 11 show an embodiment of a harness protection tube mounting machine and a harness protection tube mounting method according to the present invention. In addition, directions such as front and rear, up and down in each drawing are for convenience, and do not necessarily coincide with the actual use direction.

As shown in FIG. 1, the harness protection tube mounting machine 1 includes a first guide member (guide member or conveyance device) for guiding a corrugated tube 2 (2 ₁ to _{2 2} ) made of synthetic resin as a harness protection tube in the longitudinal direction. A guide member) 33 (3 _{1 to} 3 ₃ ), a second guide member (guide member or conveyance guide member) 4 disposed in proximity to the front of the first guide member 3 (tube feeding direction), and A pair of tube cutting blades 5 that are driven back and forth in the gap between the guide members 3 and 4 and a transport belt (first tube feed means) 6 that feeds the corrugated tube 2 along the first guide member 3. It is provided.

  In the example of FIG. 1, a plurality of (three types) corrugated tubes 2 having different diameters are arranged in parallel, and each first guide member 3 that supports each corrugated tube 2 is provided as a lower base plate (not shown). The first drive means (not shown) such as an air cylinder is integrally movable along a rail (not shown) in the lateral direction (feed orthogonal direction). The required first guide member 3 is moved to a position facing the second guide member 4 by the first driving means.

  Each first guide member 3 includes a substrate portion 7, a support plate portion 8 erected on the substrate portion 7, and a columnar or cylindrical guide portion body 9 provided on the support plate portion 8. ing. Each corrugated tube 2 is wound and stored in a container shape (not shown) such as a barrel for each type, and is pulled out by the operator from the storage section to the guide section main body 9 of each first guide member 3. Inserted (extrapolated).

  As shown in FIG. 2A, the base end portion 9a of the guide portion main body 9 is tapered and the tip 2a of the corrugated tube 2 can be easily inserted (extrapolated) into the guide portion main body 9. The base end portion 9 a of the guide portion main body 9 protrudes in the axial direction (feeding opposite direction) from the inclined base end 8 a of the support plate portion 8.

  As shown in FIG. 2 (b), the slit 2 b of the corrugated tube 2 is inserted through the support plate portion 8. When the corrugated tube 2 is expanded in diameter by the guide body 9, the slit 2 b is opened larger than the plate thickness of the support plate 8, and the inner end surface of the slit 2 b is the base end 8 a and the side surface 8 b of the support plate 8. No contact. By engaging the slit 2b with the support plate portion 8, the corrugated tube 2 is prevented from being twisted or displaced in the circumferential direction, and in this state, the corrugated tube 2 is smoothly guided to the wire harness 10 (FIG. 4).

  The guide section main body 9 may have a perfect cross-sectional shape, but may be a horizontally long oval (ellipse), a cross shape, or the like. In short, the outer peripheral surface of the guide section main body 9 is disposed on the inner peripheral surface of the corrugated tube 2. What is necessary is just to make the slit 2b of the corrugated tube 2 open while sliding. Each guide member 3 and 4 is formed of a synthetic resin or a metal material.

  As shown in FIGS. 3A to 3C, the corrugated tube 2 is extrapolated to the proximal end portion 9a of the guide body 9 (the proximal end portion 9a is inserted into the corrugated tube 2 from the opening 2a at the distal end). Accordingly, the corrugated tube 2 is expanded in diameter, and the slit 2 b is smoothly guided along the guide body 9 without hitting the base end 8 a of the support plate 8. Since the slit 2b is opened widely, a corrugated tube (not shown) wrapped with the slit (cut) 2b (both edges of the slit 2b overlap) can also be used.

As shown in FIG. 1, the conveyor belt 6 is one, the substrate 7 along the first guide member 3 _second central arranged on the opposite side of the guide body 9 as shown in FIG. 2 (b) The top part 2c of the corrugated tube 2 is sandwiched between them, and the corrugated tube 2 is sent out from the first guide member 3 to the second guide member 4 by the frictional force. The conveyor belt 6 rotates along the pair of rollers 11 in the clockwise direction in FIGS. One of the rollers 11 is driven by a motor (not shown). The conveyor belt 6 is formed to be approximately the same as or shorter than the length of the first guide member 3.

The conveyor belt 6 may have teeth, and in this case, each tooth engages with the concave groove 2d of the corrugated tube 2 to reliably feed the corrugated tube 2 out. However, the spacing of the teeth is formed by a common pitch relative to the pitch of the groove 2d of the corrugated tube 2 to be used, also to be applied to any corrugated tube 2 ₁ to 2 _3. It goes without saying that the corrugated tube 2 is an existing tube in which circumferential grooves 2d and ridges 2e are alternately arranged in a bellows shape in the tube longitudinal direction.

As the tube feeding means, a rubber roller or a toothed roller (not shown) may be used instead of the conveying belt 6. When using a plurality of types of first guide members 3 ₁ to ₃ 3 as in this example, the feeding means 6 is disposed on the opposite side of the substrate portion 7 of the first guide member 3. When the number of the members 3 is one, the feeding means 6 can be disposed on the side of the first guide member 3 (in a direction orthogonal to the substrate portion 7).

  As shown in FIG. 1, the cutting blades 5 are disposed in a pair facing each other in the thickness direction of the substrate portion 7. When there is one first guide member 3, the cutting blade 5 can be arranged in the width direction of the substrate portion 7. The cutting blade 5 is formed of a thin metal plate and has a substantially V-shaped blade portion 5a at the tip. The blade portion 5a is not limited to a V shape, and may be flat or inclined. In either case, the drive unit (not shown) such as an air cylinder moves forward and backward along the gap 12 between the first guide member 3 and the second guide member 4, and between the guide members 3 and 4. The corrugated tube 2 is cut in the radial direction.

  If the gap 12 between the two guide members 3 and 4 is extremely narrow, it may be always open, but preferably, after the corrugated tube 2 is cut by the cutting blade 5, the tip of the first guide member 3 is moved to the second The distal end of the next corrugated tube 2 (on the first guide member 3 side) in a state where the guide member 4 is moved toward the base end and both the guide members 3 and 4 are joined in the axial direction to eliminate the gap 12. 2 a is moved to the second guide member 4. The gap 12 between the two guide members is formed by retracting the first guide member 3 with respect to the second guide member 4. The backward movement is performed, for example, by moving the above-described base plate (not shown) to which each substrate portion 7 is fixed by a second driving means such as an air cylinder in the tube longitudinal direction. The second guide member 4 is stationary.

  As shown in FIG. 1, there is one second guide member 4, which is provided on the substrate portion 13, the support plate portion 14 orthogonal to the substrate portion 13, and the support plate portion 14, similarly to the first guide member 3. It is composed of a cylindrical or cylindrical guide body 15.

The guide part main body 15 is located on the same axis (center line) as the guide part main body 9 of the first guide member 3. The proximal end surface of the guide portion main body 15 is positioned to face the distal end surface of the guide portion main body 9 of the first guide member 3. Guide body 15 is commonly used is set to an outer diameter matching the plural kinds of the minimum inner diameter of the corrugated tube 2 ₁ to 2 ₃ to be used. When the diameters of the corrugated tubes 2 are greatly different, the second guide member 4 can be replaced with one corresponding to the diameter of the corrugated tube 2.

  On the distal end side of the second guide member 4, a substantially semicircular third guide member (mounting guide member or distal end side portion) 17 is bent in a substantially L shape with respect to the second guide member 4 ( 6) is arranged, and the corrugated tube 2 is mounted on the outer periphery of the wire harness 10 along the third guide member 17. Since the third guide member 17 is provided integrally with the guide portion main body 15 of the second guide member 4, the third guide member 17 may be described as a part of the second guide member 4 (the tip side portion of the guide member 4). However, for convenience, the third guide member 17 will be described separately from the second guide member 4.

  As shown in FIG. 4, the wire harness 10 is horizontally disposed on the work table 18 (FIG. 6), and the first and second guide members 3 and 4 are vertically disposed on the upper side of the wire harness 10. Are arranged horizontally between the upper and lower guide members 3, 4. The direction in FIG. 4 is the actual use direction. Each guide member 3, 4, conveyor belt 6, cutting blade 5, and the like are disposed on a frame 19 (FIG. 6), and are moved up and down integrally with the frame 19 by driving means (not shown) such as an XY rail, a screw shaft, and a motor. Moving.

  The corrugated tube 2 is bent by 90 ° direction (vertical to horizontal) along the third guide member 17 (FIG. 6) through the first and second guide members 2 and 3, and the wire harness (a plurality of electric wires) ) It is mounted on the outer periphery of 10. The corrugated tube 2 is attached along the wire harness 10 by the pushing force of the conveyor belt 6. Subsequently, it cut | disconnects to required length with the horizontal cutting blade 5 on either side. The cutting length of the corrugated tube 2 can be measured by, for example, the rotational speed of the transport belt 6 or the rotational speeds of the feed rollers 20 and 21.

  By cutting the long corrugated tube 2 for each use, it is not necessary to have a cut stock of the corrugated tube 2. In addition, the corrugated tube 2 is cut with the cutting blade 5 between the two guide portions in a state where the inner surface of the corrugated tube 2 is supported by the guide portion main bodies 9 and 15 having a circular cross section of both the guide members 3 and 4, so that the corrugation is cut. The tube 2 is cleanly and reliably performed without being crushed and deformed.

  After cutting, the corrugated tube portion 2 along the third guide member 17 (FIG. 6) is completely attached to the wire harness 10 by a pair of upper and lower feed rollers (second tube feeding means) 20 and 21 having the same diameter. Since the orientation of the corrugated tube 2 is defined by the support plate portion 14 of the second guide member 4 even after cutting, the corrugated tube 2 can be smoothly connected to the wire harness 10 by expanding the slit 2b in the guide portion main body 15 in this state. It becomes possible to attach to.

  One feed roller 20 is disposed along the bent inner side surface 2f 'of the bent portion 2f of the corrugated tube 2, and is rotationally driven by driving means such as a handle 22 (Fig. 6) or a motor (not shown). By disposing one feed roller 20 on the bent inner side surface 2f 'of the corrugated tube 2, even the short corrugated tube 2 as shown in FIG. 4 can be securely attached to the wire harness 10 to the end. The other feed roller 21 is disposed near the cutting blade 5 on the upper end side of the second guide member 4.

  The feeding rollers 20 and 21 feed the corrugated tube 2 to the wire harness 10 side by frictional force with the corrugated tube 2 sandwiched between the second and third guide portions 4 and 17. A plurality of protrusions (not shown) may be provided on the outer circumferences of the feeding rollers 20 and 21, and the protrusions may be engaged with the concave grooves 2d (FIG. 2) of the corrugated tube 2 to reliably feed the corrugated tube 2 without slipping. Is possible. It is also possible to use only one feed roller 20 on the tube bent portion 2f side. In FIG. 4, the slit 2 b of the corrugated tube 2 is located on the side opposite to the feeding means 6, 20, 21.

  FIGS. 5A to 5C show three views of the first guide member 3 and the second guide member 4. The surfaces 9b and 15b on the side of the feeding means 6 and 21 of each guide part main body 9 and 15 are arcuate surfaces, and rib-like support plate parts 8 and 14 are arranged on the opposite side to the feeding means 6 and 21. The base end portion of the cylindrical guide portion main body 15 of the second guide member 4 has a tapered guide surface 15a, and the base end 14a of the support plate portion 14 is formed in an inclined shape. The outer diameter of the guide part main body 15 of the second guide member 4 is equal to or smaller than the outer diameter of the guide part main body 9 of the first guide member 3.

  The cut end 2a (FIG. 4) of the corrugated tube 2 can be smoothly transferred from the first guide member 3 to the second guide member 4 along the guide surface 15a. At this time, the slit 2b (FIG. 1) of the corrugated tube 2 is provided. ) Is smoothly engaged and positioned (direction defined) without contacting the base end 14a of the support plate portion 14.

  6 to 7 show the protective tube mounting structure and method of FIG. 4 in more detail. As shown in FIG. 6, a third guide member 17 is integrally provided on the distal end side (lower end side) of the second guide member 4, and each electric wire 10a of the wire harness 10 is supported by a plurality of support members 23 such as Y forks. The corrugated tube 2 is attached to the wire harness 10 as shown in FIG. 7 in a state where the wires 10a are arranged horizontally on the wiring board 18 and the electric wires 10a are bundled by the harness converging tool 24 (FIG. 8). The feed rollers 20 and 21 are driven by a manual handle 22 in this example. It is also possible to use a motor or the like (not shown) instead of the handle 22 as the driving means.

  The pair of feed rollers 20 and 21, the handle 22, and the harness converging tool 24 are disposed on the frame 19 and can be moved up and down (moved) integrally with the frame 19. 6 and 7, the first and second guide members 3 and 4 are joined to each other with no gap therebetween. In FIG. 6, the cutting blade 5 (FIG. 4) between the guide members 3 and 4 (FIG. 4) and the conveyance belt 6 are not shown, and the outlines of the guide body 9 and 15 and the third guide member 17 of each guide member 3 and 4. Is illustrated. A harness converging tool 24 is located adjacent to the guide member 17.

  The handle 22 is connected to an intermediate gear 25. The intermediate gear 25 meshes with each gear 26 having the same diameter of the upper and lower feed rollers 20 and 21, and both feeds are performed by turning the handle 22 in one direction as indicated by an arrow. The rollers 20 and 21 rotate in the same direction, and the corrugated tube 2 is attached to the wire harness along the third guide member 17 as indicated by an arrow E.

  As shown in FIG. 8, the harness converging tool (converging means) 24 includes a guide plate 27 having a pair of left and right tapered inner surfaces 27a, and a converging groove 28 formed between the guide plates 27 following the inner surface 27a. A central harness retainer plate 29 having a semicircular tip 29a that advances and retreats (lifts) along the converging groove 28, and an arcuate inner surface 30a that opens and closes from the position of the left and right guide plates 27 with respect to the harness retainer plate 29. It has a pair of left and right converging arms 30. The harness pressing plate 29 and each converging arm 30 function as a chuck.

  The harness holding plate 29 is connected to a rod of a vertical air cylinder (not shown), and each converging arm 30 is connected to the rod of the same air cylinder via a link and a pin 31. At the same time as the plate 29 descends (advances), each converging arm 30 closes and the wire harness 10 (FIG. 6) is sandwiched from three sides to converge to a small diameter. In FIG. 8, reference numeral 22 denotes a handle, 25 and 26 denote gears, 20 and 21 denote feed rollers, and 19 denotes a frame in which the rollers 20 and 21 are supported by the shaft portion 32.

  As shown in FIG. 6, the harness converging tool 24 descends integrally with each of the guide members 3, 4 and 17 to house the wire harness 10 inside the pair of guide plates 27 (FIG. 8). And the pair of converging arms 30, the electric wires 10 a of the wire harness 10 are grasped without being separated and converged.

  The upper side and the left and right sides of the wire harness 10 are covered with a third guide member 17, and the wire harness 10 is accommodated inside the third guide member 17 in a state of being bundled by a harness converging tool 24. Accordingly, as shown in FIGS. 11A and 11B, the wire harness 10 is collectively accommodated in the upper portion of the third guide member 17 regardless of the diameter of the wire harness 10, and the corrugated tube 2 to the wire harness 10 is accommodated. Is installed smoothly and reliably.

  Since the wire harness 10 is converged to a small diameter by the harness converging tool 24, the sliding resistance between the guide member 17 and the wire harness 10 and the sliding resistance between the corrugated tube 2 and the wire harness 10 are reduced and smoothly with a small force. The corrugated tube 10 is attached (external insertion). Therefore, the feeding speed of the corrugated tube 10 can be increased to increase the tube mounting speed.

  After the wire harness 10 is converged by the harness converging tool 24 and the wire harness 10 in that state is accommodated by the third guide member 17 at the same time, the corrugated tube 2 is slid to the third guide member 17 by the feeding rollers 20 and 21. Attached to the wire harness 10 in contact. Since all the movements of the tube mounting machine 1 (the setting of the guide members 3, 4, 17 and the converging tool 24) are performed from above the wire harness 10, it is possible to save the process space.

  6 and 7, the harness support 23 shown by the right chain line is actually disposed at a position far away on the right side in the harness longitudinal direction (direction of arrow F). In FIG. 7, the corrugated tube is fed by the feeding rollers 20 and 21 along the wire harness 10 in the right direction as indicated by the arrow E. At the same time, the harness protecting tube mounting machine 1 itself, that is, the harness converging tool 24 and each guide member. 3, 4, 17, the feeding means 6, 20, 21 and the cutting blade 5 (FIG. 4), together with the frame 19, at the same speed as the feeding speed in the direction of arrow E, as shown by arrow F, Move.

  The harness converging tool 24 can be slid along the wire harness 10 by loosely gripping the wire harness 10 with the arm 30 and the presser 29. The wiring board (work table) 18 and the harness support 23 are fixed to the movable tube mounting machine 1. Since the wire harness 10 is always brought into the insertion (attachment) position of the corrugated tube 2 in a state where it is converged by the harness converging tool 24, the corrugated tube 2 is attached without applying a burden (rubbing, scratching, etc.) to the wire harness 10. .

  By feeding the corrugated tube 2 and moving the tube mounting machine 1 in the opposite directions at the same speed, the position of the tip 2h of the corrugated tube 2 remains constant in FIG. 7, and the corrugated tube 2 and the wire harness 10 Thus, the corrugated tube 2 is smoothly and reliably attached to the wire harness 10. Since the position of the tip 2h of the corrugated tube 2 does not change, it is easy to define the mounting position (range) of the corrugated tube 2 to the wire harness 10.

  For example, when the tube mounting machine 1 is not moved in the F direction at all, a force for pushing out the corrugated tube over the sliding resistance with the wire harness is required, and a large driving force is required for the feeding means 20 and 21. Although the corrugated tube can be mounted without moving the tube mounting machine 1 in the F direction, it is best to simultaneously feed the corrugated tube 2 and move the tube mounting machine 1.

  When the moving speed of the tube mounting machine 1 in the F direction is slower than the feeding speed of the corrugated tube 2 in the E direction, the sliding of the corrugated tube 2 and the wire harness 10 is less than when the tube mounting machine 1 is not moved in the F direction at all. The dynamic friction force is reduced, but the sliding friction is larger than when moving at the same speed. Further, when the moving speed of the tube mounting machine 1 in the F direction is higher than the feeding speed of the corrugated tube 2 in the E direction, the corrugated tube 2 slips unnecessarily with respect to the wire harness 10. If the outer diameter of the wire harness 10 and the inner diameter of the corrugated tube 2 are not so different as shown in FIG. 7 and the friction between the distal end portion of the corrugated tube 2 attached to the wire harness 10 and the wire harness 10 is large, the tube is attached. By moving the machine 1 in the direction F, the corrugated tube 2 can be attached to the wire harness 10 (when there is no friction between the feeding means 6, 20, 21 and the corrugated tube 2). The mounting speed of the corrugated tube 2 can be increased by the sum of the feeding speed in the E direction of 2 and the moving speed in the F direction of the tube mounting machine 1.

  The tube mounting machine 1 is moved by, for example, an XY drive unit (not shown). The XY drive unit includes, for example, a horizontal X-direction rail and a Y-direction rail. The X-direction rail extends linearly in the same direction as the wire harness 10, and the slider is slidably engaged with the X-direction rail. The frame 19 is fixed integrally, and the slider is driven by a ball screw shaft and a motor, and the X direction rail is orthogonal to the horizontal Y direction rail and is slidably engaged by another slider.

  If the wiring (wiring) direction of the wire harness 10 is the same as the X direction rail, the tube mounting machine 1 is driven only by the X direction rail, but the wiring (wiring) direction of the wire harness 10 is on the horizontal plane. If the direction crosses the X direction rail, the Y direction rail is driven simultaneously with the X direction rail. The frame 19 or the slider can be rotated (swinged) horizontally by an actuator or the like within a range of 90 ° or less.

  When simplifying the facility, only the X direction rail is installed, and the wire harness 10 is routed in the same direction as the X direction rail. Without using the XY drive unit, the handy type tube mounting machine 1 is formed, and the operator holds the tube mounting machine 1 with both hands and presses the third guide member 17 against the wire harness 10 from above to corrugate the tube 2. Can be attached to the wire harness 10 by the feeding means 6, 20, 21. In this case, the harness converging tool 24 and the cutting blade 5 may be omitted for weight reduction. After the corrugated tube 2 is mounted, the convergence of the wire harness 10 by the harness converging tool 24 is released, and the tube mounting machine 1 is lifted and retracted.

  The corrugated tube 2 is mounted linearly between the two harness supports 23. Accordingly, when the long corrugated tube 2 is mounted, the interval between the two harness supports 23 is set long. Alternatively, a harness support (23) that does not interfere with the corrugated tube 2 or the harness converging tool 24 is used in the middle. In the case of the handy type tube mounting machine 1, it is possible to easily cope with the bent wiring configuration of the wire harness 10.

  In FIG. 7, instead of moving the tube mounting machine 1 in the F direction, it is also possible to move the wiring allowance 18 together with the support 23 and the wire harness 10 in the F direction. While the wiring board 18 is often conveyed along the floor at a slow speed, an operator assembles the wire harness and various parts on the wiring board 18, but the speed can also be used.

  FIGS. 9A and 9B show the configuration and operation of the second and third guide members 4 and 17, and FIG. 9A shows the AA cross section of FIG. 4 and FIG. 9B. Is a BB cross section, FIG. 9 (c) is a CC cross section, and FIG. 9 (d) is a DD cross section. In FIG. 9, reference numeral 2 is a corrugated tube, 20 and 21 are feeding rollers, 4 is a second guide member, 17 is a third guide member, and 19 is a frame.

  The guide portion main body 15 of the second guide member 4 is formed in a circular cross section on the base end side as shown in FIG. 9A, and gradually increases from the position shown in FIG. 9A toward the tip end as shown in FIG. 9B. The corrugated tube 2 is gradually expanded in diameter along the outer peripheral surfaces 15c and 15d of the wide portion 15 ′ of the second guide member 4. By gradually expanding the diameter, the corrugated tube 2 can be opened with a small force.

  Then, as shown in FIGS. 9C and 9D, a third guide having a substantially semi-annular (substantially inverted U-shaped cross section) following the distal end side (wide portion 15 ′) of the guide body 15 of the second guide member 4 is provided. Each wire 10a of the wire harness 10 is encased by the member 17, and in this state, both side ends of the slit 2b of the corrugated tube 2 are in smooth sliding contact with the outer surface 17a of the third guide member 17, and the corrugated tube 2 is The wire harness 10 is put on the outer periphery along the guide member 17.

  9 (c) and 9 (d), the expanded state of the corrugated tube 2 is maintained by the outer surface 15d of the wide portion 15 'of FIG. 9 (b). The gap 33 between the top inner surface 2g of the corrugated tube 2 and the outer surface 17a of the third guide member 17 in FIG. 9C is not shown in FIG. 9D, but the top inner surface 2g of the corrugated tube 2 and the third inner surface 2g. The outer surface 17a of the guide member 17 closely contacts.

  FIGS. 10A and 10B show one form of the third guide member 17 that is integrated with the guide portion main body 15 of the second guide member 4. The third guide member 17 includes a substantially inverted U-shaped harness housing part (insertion part) 34 in the front view of FIG. 10A and a harness introduction projecting obliquely downward in a wing shape on the left and right sides of the harness housing part 34. Part 35. As shown in FIGS. 10A and 10B, the harness introduction portion 35 has the lower openings 36a gradually widened from the distal end 35a in the harness longitudinal direction toward the base end 35b.

  The harness housing part 34 is composed of a semicircular part 34a in the upper half and a pair of left and right substantially straight vertical plate parts 34b in the lower half, and has a harness housing space 36 on the inner side. The semicircular portion 34a continues to the columnar or cylindrical guide portion body 15 of the second guide member 4 following the side opening 36a and the front and rear openings 36b. As shown in FIG. 10B, the guide body 15 is curved in a substantially arc shape from top to bottom and continues to the third guide member 17 so that the corrugated tube 2 can be smoothly transferred to the third guide member 17.

  As shown in FIG. 11A, the harness housing portion 34 of the third guide member 17 is formed of a synthetic resin material, and a pair of plate-like portions 34b on both the left and right sides are flexible, with a semicircular shape at the top. The arc 34a is urged in the closing direction by a restoring force to close the slit 2b of the corrugated tube 2 with a boundary 34c as a fulcrum, and the inner surfaces of the pair of plate-like parts 34b are in close contact with the outer surface of the wire harness 10, It is preferable that the pair of plate-like portions 34b can return to the opening direction by their own elasticity in a free state. It is possible to cope with various wire harness diameters by making the plate-like portion 34b flexible.

  The arc portion 34a is formed of a hard material or thick wall and is hard to bend and is rigid. When the feeding roller 20 is pressed against the arc portion 34a, the corrugated tube 2 is firmly sandwiched between the arc portion 34a and the roller 20 and slides. It is preferable that the corrugated tube 2 can be sent out with a strong frictional force. Forming irregularities (not shown) along the corrugated tube insertion path (in the longitudinal direction of the corrugated tube) on the outer surfaces of the pair of plate-like portions 34b, and engaging the slit edge 2b of the corrugated tube 10 with the concave portions. Thus, it is possible to enhance the insertion (mounting) property of the corrugated tube 10.

  As shown in FIG. 11A, when a small-diameter wire harness 10 composed of a small number of electric wires 10a is inserted into the harness housing portion 34, the harness housing portion 34 is closed by the elastic force of the corrugated tube 2, and the wire harness 10 is securely connected. The corrugated tube 2 is smoothly and reliably attached to the wire harness 10 along the outer surface of the harness housing portion 34.

  As shown in FIG. 11B, when the large-diameter wire harness 10 composed of a large number of electric wires 10 a is inserted into the harness housing portion 34, the harness housing portion 34 is not completely closed, but the wire harness is struck by the elastic force of the corrugated tube 2. 10 is held in the closing direction, and the corrugated tube 2 is attached to the wire harness 10 smoothly and reliably along the outer surface of the harness housing portion 34. In FIG. 11, reference numeral 20 denotes a feeding roller.

  In the above embodiment, the bellows-like corrugated tube 2 is used as the harness protection tube, but it is also possible to use a flat resin tube or rubber tube having a slit (cut) in the longitudinal direction in addition to the corrugated tube. is there. In the above embodiment, a plurality of short support rods (not shown) may be erected in parallel instead of the support plate portions 8 and 14 as support portions of the first and second guide members 3 and 4. Is possible.

  Moreover, in the said embodiment, although the corrugated tube 2 was cut | disconnected between the 1st and 2nd guide members 3 and 4 which are conveyance guide members, it replaces with this, for example, the base of the 1st guide member 3 is used. It is also possible to cut the corrugated tube 2 at the end side (the end opposite to the second guide member 4). In this case, when a plurality of types of corrugated tubes 2 are selectively arranged as shown in FIG. 1, the first and second guide members 3 and 4 are separated, but when the corrugated tube 2 to be used is one type, The first and second guide members 3 and 4 are integrated.

  Moreover, in the said embodiment, although the corrugated tube 2 was sent out to the wire harness 10 side by the sending means 6, 20, and 21, these operators, 20, and 21 were excluded and the corrugated tube 2 was manually operated by the operator. Can be attached to the wire harness 2 along the guide members 3, 4, and 17. Even in this case, the efficiency and certainty of mounting the corrugated tube 2 is higher than when the conventional harness protection tube mounting tools 71 and 61 are used.

  Moreover, in the said embodiment, although the 1st, 2nd guide members 3 and 4 were arrange | positioned orthogonally to the wire harness 10, the 1st, 2nd guide members 3 and 4 are inclined to the wire harness 10. It is also possible to arrange them in a crossing manner.

  Moreover, in the said embodiment, although the base end 9a of the 1st guide member 3 was sharpened in bullet shape, it replaced with this and the base end 9a is the taper surface 15a similar to the 2nd guide member 4 of FIG. Alternatively, when the second guide member 4 has a smaller diameter than the first guide member 3, the tapered surface 15a of the second guide member 4 in FIG. 5 can be omitted.

It is a perspective view which shows one form of the protection tube supply part of the harness protection tube mounting machine which concerns on this invention. The state which supplied the harness protection tube to the 1st guide member of the harness protection tube mounting machine is shown, (a) is a side view, (b) is a front view. (A)-(c) is a top view (bottom view) which shows the state which supplies a harness protection tube to a 1st guide member in order. It is a side view which shows the state (one Embodiment of a harness protection tube mounting method) which supplies a harness protection tube to a wire harness from a 2nd guide member. The first and second guide members are shown side by side, (a) is a top view, (b) is a bottom view, and (c) is a side view. It is a side view which shows one form of the protection tube mounting part of a harness protection tube mounting machine. It is a side view which shows the state which similarly attaches a protection tube to a wire harness. It is a front view which shows the harness convergence tool in a protection tube mounting part. (A)-(d) is sectional drawing which shows the 2nd, 3rd guide member corresponding to arrow A-D of FIG. The 3rd guide member following a 2nd guide member is shown, (a) is a front view, (b) is a side view. The effect | action of a 3rd guide member is shown, (a) is a front view corresponding to a few electric wires, (b) is a front view corresponding to many electric wires. It is a perspective view which shows one form of the conventional protective tube mounting tool. It is a side view which shows the other form of the conventional protective tube mounting tool.

Explanation of symbols

1 Harness protection tube mounting machine 2 Corrugated tube (harness protection tube)
2b Slit 2f 'Bent inner surface 3 First guide member (guide member)
4 Second guide member (guide member)
6 Conveyor belt (tube feeding means)
10 Wire harness 17 Third guide member (tip side portion)
20, 21 Feed roller (tube feed means)
24 Harness convergence tool

Claims (8)

  A harness protection tube mounting machine for mounting a harness protection tube having a slit in the longitudinal direction on a wire harness from the slit side opened along the outer surface of the guide member, the guide member extending in a direction intersecting the wire harness A harness protection tube mounting machine comprising: a tube feeding means that moves and mounts the harness protection tube in a state where the distal end portion of the guide member is covered on the wire harness.   The harness protection tube mounting machine according to claim 1, wherein the tube feeding means is arranged along a bent inner surface of the harness protection tube that intersects the wire harness.   The harness protection tube mounting machine according to claim 1, further comprising a harness converging tool that converges the wire harness in the vicinity of a distal end side portion of the guide member.   The distal end portion of the guide member has flexibility in the closing direction, and is biased in the closing direction by the restoring force of the slit of the harness protection tube. The harness protection tube mounting machine described.   A harness protection tube mounting method for mounting a harness protection tube having a slit in a longitudinal direction on a wire harness from the slit side opened along the outer surface of the guide member, in a direction intersecting the wire harness A harness protection tube mounting method comprising: moving the harness protection tube with a tube feeding means and mounting the harness protection tube on the wire harness in a state where the distal end portion of the guide member is covered on the wire harness.   The harness protection tube mounting method according to claim 5, wherein the harness protection tube is sent out in a state where the wire harness is converged by a harness converging tool in the vicinity of a distal end side portion of the guide member.   6. The harness protection tube mounting method according to claim 5, wherein the guide member according to claim 5 or the guide member according to claim 6 and the harness converging tool are moved in a direction opposite to a feeding direction of the harness protection tube.   8. The harness protection tube mounting method according to claim 7, wherein the harness protection tube feed speed and the movement speed are the same.

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