JP2000067676A - Automatic wire harness water stop section forming device - Google Patents

Abstract

(57) [Problem] To individually manage the curing time of a liquid curable filler in a grommet of each wire harness without variation. SOLUTION: A plurality of wire harness holders 9 for vertically supporting one wire harness 8 are provided in an endless transport device 3 driven to rotate at a required speed by a drive source, and a rotation direction of the endless transport device 3 is provided. At a predetermined interval. Each wire harness holder 9 is provided with a grommet holder 20 that supports a grommet 14 mounted in the middle of each wire harness 8. A liquid curable filler is filled in the grommet 14 of the wire harness 8 facing the endless carrier 3 at least at one fixed side in the circumferential direction thereof in the circumferential direction thereof. A filler filling device that fills a gap between adjacent electric wires of the harness 8 is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness, in which a grommet is positioned and mounted on a portion of a wire harness in a longitudinal direction where a water stop portion is to be formed. The present invention relates to an automatic forming device for a wire harness water shutoff portion that is filled and cured to form a water shutoff portion.

[0002]

2. Description of the Related Art For example, in a wire harness used for wiring in an automobile, a grommet is positioned and mounted at a location where a water stop portion is to be formed in the middle of the wire harness in a longitudinal direction, and a wire between adjacent wires of the wire harness in the grommet is installed. Filled with a liquid curable filler and cured to form a waterproof waterproof part, and the wire harness thus formed the waterproof part is passed through a hole in a panel that separates, for example, an engine room and a driver's seat, A grommet is fitted in a hole of the panel in a watertight manner to waterproof a wire harness penetration portion of the panel in a watertight manner.

[0003] Conventionally, a work of forming a water blocking portion using a grommet in such a wire harness is conventionally performed by arranging a plurality of wire harnesses in a vertical line and placing a liquid curable filler in each grommet of the wire harness. , Each of which was then moved to another location and left until the liquid curable filler in each grommet was cured.

[0004]

However, in such a conventional method for forming a wire harness water stopping portion, time management until the liquid curable filler in each grommet is cured is performed in units of wire harness groups. The curing state is different between the one filled with the liquid curable filler first and the one filled with the liquid curable filler last, and the cured state is insufficient when moving to the storage location as a product The liquid curable filler may be deformed.

In such a conventional method of forming a water stop portion of a wire harness, each grommet of each wire harness is filled with a liquid curable filler, and then a group of these wire harnesses is moved to another location. In this case, the liquid curable filler is easily spilled from the grommet, and there is a problem in quality control and workability.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic wire harness water-stopping device capable of individually controlling the curing time of a liquid curable filler in a grommet of each wire harness without variation. It is in.

Another object of the present invention is to provide an apparatus for automatically forming a wire harness water shutoff portion which can be removed after the liquid curable filler in the grommet has been cured to a state where there is no problem in handling.

Another object of the present invention is to provide an automatic wire harness water-stopping device capable of circulating and moving each wire harness holder in a required vertical position without fail.

Another object of the present invention is to provide an automatic wire harness water-stopping device capable of easily filling a liquid curable filler with a gap between adjacent wires of a wire harness in a grommet. It is in.

[0010]

According to the present invention, there is provided an apparatus for automatically forming a water stop portion of a wire harness, comprising an endless carrier which is annular and has a required shape and is rotatably disposed. The endless carrier is driven to rotate at a required speed by a drive source. In the endless carrier, a plurality of wire harness holders each supporting one wire harness in the vertical direction are vertically supported at predetermined intervals in the rotation direction of the endless carrier. Each wire harness holder is provided with a grommet holder that supports a grommet mounted in the middle of each wire harness. A liquid curable filler is filled in the grommet of the wire harness facing the endless carrier in the process of rotation on at least one fixed side in the circumferential direction of the wire harness so as to face the endless carrier. A filler filling device that fills the gap between them is arranged.

In such an automatic wire harness water stopping section forming apparatus, each wire harness holder is rotated at a predetermined speed as the endless carrier is supported by the endless carrier, and each wire harness holder is filled with filler material. Each time the wire harness holder is supported by the wire harness holder, the grommet of the wire harness is filled with the liquid curable filler. At this time, the liquid curable filler is filled after the rotation of the endless transport tool is temporarily stopped.

The liquid curable filler in the grommet cures to a state where there is no problem in handling during one rotation of the endless carrier. When the loop length of the endless carrier is long, for example, when the filler filling device is arranged at two places in the circumferential direction of the endless carrier, the liquid curable filler in the grommet is rotated by 1/2 of the endless carrier. During the process, it cures to a state where there is no problem in handling.

[0013] In this way, the filling of the liquid curable filler into the grommet is performed as follows as the endless carrier rotates.
When the curing of the liquid curable filler in each grommet is performed during the rotation of the endless carrier, the curing time of the liquid curable filler in each grommet is individually managed without variation. be able to. Therefore, the liquid curable filler in the grommet can be removed after being cured to a state in which there is no problem in handling, and the liquid curable filler in an inadequately cured state is deformed in the next step as in the related art. Can be prevented.

According to the present invention, the pair of rollers are rotatably supported on the respective wire harness holders at different positions in the vertical direction, and the pair of rollers is formed by an annular rail disposed along the endless conveyance device. It is preferable that the wire harness holder be held rotatably from above and below to bear the load on the wire harness holder side and to maintain the posture of the wire harness holder. With such a structure, each wire harness holder can be reliably held in a required vertical orientation and circulated by the action of the annular rail and the pair of rollers that sandwich the rail from above and below. . For this reason, it is possible to prevent the liquid curable filler from spilling out of the grommet during the rotation of the endless carrier.

Further, in the present invention, the filler filling apparatus twists the wire harness in a state where the wire harness is gripped above and below the grommet, returns the twist, and reduces the vertical gripping interval to reduce the wire harness. The structure is provided with first and second grippers for performing an operation of opening a gap between each of the constituent electric wires, and a filler injector for filling the liquid curable filler into the grommet. preferable. By twisting the wire harness while holding the wire harness above and below the grommet and performing an operation of returning the twist, the wires constituting the wire harness can be aligned in the following directions. The work of opening a gap between adjacent electric wires in the compression step can be easily performed. In addition, when the gap between the first and second gripping tools is narrowed to provide a gap between the wires of the wire harness, the operation of compressing the wire harness at a location where a gap is desired to be provided between adjacent wires in the axial direction. By simply adding, a gap can be easily formed between adjacent electric wires, and there is an advantage that workability is very good.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 (A) and 1 (B) -FIG. 4 (A)-
FIG. 1C shows an example of an embodiment of the automatic wire harness water stopping section forming apparatus according to the present invention.
(A) and (B) are a plan view and a front view showing an automatic forming device of a wire harness water shutoff part of the present example, and FIG. 2 (A) is a cross section at one wire harness holder of the device shown in FIG. FIG. 2 (B) is a front view of one wire harness holder shown in FIG. 2 (A), FIG. 2 (C) is a plan view of one wire harness holder shown in FIG. 2 (A), and FIG. FIG. 4 is a perspective view showing a schematic configuration of a filler filling device at one wire harness holder of the device shown in FIG.
(A)-(C) is a process drawing which shows the process of filling a liquid hardening filler into the grommet of a wire harness.

As shown in FIGS. 1A and 1B, in the automatic wire harness water stopping section automatic forming apparatus, an endless transporting device is constituted by chains 1 and 2 which are annular and rotatably arranged. 3 is provided. The chains 1 and 2 are arranged at intervals above and below. Both ends of the chain 1 are wound around sprockets 4a and 4b on each side, and both ends of the chain 2 are sprockets 5a and 5b.
Has been passed over. The sprockets 4a and 5a are supported by a common shaft 6a, and are rotated by a drive source 7 composed of a motor. Sprocket 4
b and 5b are supported by a common shaft 6b. The endless carrier 3 has a straight portion parallel to each other and an arc-shaped portion at both ends, since both ends are stretched over the sprockets 4a, 5a and the sprockets 4b, 5b.

A plurality of wire harness holders 9 each supporting one wire harness 8 in a vertical direction are provided on the annular endless carrier 3 at predetermined intervals in a rotation direction of the endless carrier 3. It is supported in the direction.

As shown in FIG. 3, the wire harness 8 has a plurality of wires 10 bound together by a tape 11 and a connector 12 connected to an end of each wire 10. Scheduled location 13
Then, the tape 11 is removed, and the group of the electric wires 10 is exposed. Grommets 14 are fitted to the exposed portions of the group of electric wires 10. The grommet 14 is made of rubber, and has a structure in which a small-diameter cylindrical portion 14b is integrally connected below a large-diameter cylindrical portion 14a, and the small-diameter cylindrical portion 14b is provided with the large-diameter cylindrical portion 14a facing upward. Is an electric wire 10 passing therethrough
Are fixed to the wire harness 8 by a taping portion 15 that straddles the small-diameter cylindrical portion 14b and the group of the electric wires 10.

Each wire harness holder 9 is shown in FIG.
As shown in (A) to (C), there are a pair of vertical bar-shaped stands 18a and 18b fixed to the chains 1 and 2 by fixtures 16 and 17, respectively, and these stands 18a and 18b are provided.
Are arranged at predetermined intervals at different positions in the longitudinal direction of the chains 1 and 2. A plurality of wire harness supports 19a and 19b for supporting one wire harness 8 in a vertical direction are attached to the stands 18a and 18b in a horizontal direction. The upper end of the wire harness 8 is hooked and supported by the upper wire harness support 19a as shown in the figure. Stands 18a, 1
8b, a grommet holder 20 for supporting the grommet 14 mounted in the middle of the wire harness 8 is provided.
Is attached. A box 21 for housing the lower end of the wire harness 8 is provided below the stands 18a and 18b.
Is attached.

As shown in FIG.
As shown in (A) and (B), the paired rollers 22a and 22b and the paired rollers 23a and 23b are rotatably supported at different positions vertically. In this example, the paired rollers 22a and 22b are rotatably supported at diagonal positions of a roller holder 24 having a rectangular plate shape, and the roller holder 24 is fixed across the stands 18a and 18b. Similarly, the paired rollers 23a and 23b are rotatably supported at diagonal positions of a roller holder 25 having a rectangular plate shape.
a, 18b.

The paired rollers 22a and 22b and the paired rollers 23a and 23b are arranged along the chains 1 and 2 constituting the endless transport device 3 as shown in FIGS. The upper and lower annular rails 26 and 27 are rotatably held in the up and down directions, respectively, so that the load on the wire harness holder 9 is borne and the posture of the wire harness holder 9 is maintained.

The upper and lower annular rails 26 and 27 are fixed to a common annular frame 29 installed on a floor 28 as shown in FIG.

On at least one fixed side in the circumferential direction opposite to the endless carrier 3, in this example, the endless carrier 3 in the circumferential direction becomes straight from an arc at both ends.
As shown in FIG. 3, the grommet 1 of the wire harness 8 facing in the process of rotating the endless carrier 3
A filler filling device 31 for filling a liquid curable filler 30 such as urethane into 4 and filling gaps 41 between adjacent electric wires 10 of the wire harness 8 is disposed.

The filler filling device 31 is provided with a grommet 1
A first operation is performed in which the wire harness 8 is twisted in a state where the wire harness 8 is gripped above and below the wire 4, the twist is returned, the gripping interval is reduced, and a gap 41 is provided between the electric wires 10 of the wire harness 8. , The second gripper 32, 3
3 and a filler filler 34 for filling the grommet 14 with the liquid curable filler 30. In this case, the first holding tool 32 holds the wire harness 8 above the grommet 14, and the second holding tool 33 holds the wire harness 8 below the grommet 14. It is supported by. The first gripper 32 is supported by the stand 35 by the rotary elevating means 36 so that the wire harness 8 can be twisted or untwisted in a gripped state and can be moved up and down along the stand 35. The second grip 33 is fixed to the stand 35 by fixing means 37. The filler filler 34 fills the grommet 14 with the liquid curable filler 30 via a hose 38 and a nozzle 39. The filler filling device 31 is provided with a vibrator 40 that vibrates the stand 35 and vibrates the wire harness 8 via the first and second grippers 32 and 33.

In such an automatic wire harness water stopping section forming apparatus, one wire harness 8 is provided for each wire harness holder 9 supported by the endless carrier 3 and wire harness supports 19a, 1
It is supported vertically by using 9b, box 21 or the like. Also,
Grommet 1 positioned on wire harness 8
4 is supported by the grommet holder 20 with the large-diameter cylindrical portion 14a facing upward.

In this state, the endless carrier 3 is driven to rotate at a predetermined speed by the drive source 7. Thus, the respective wire harness holders 9 supported by the endless carrier 3 also rotate at a predetermined speed. Each time each wire harness holder 9 faces the filler filling device 31, the rotation of the endless carrier 3 is temporarily stopped, and the liquid curable filler is placed in the grommet 14 of the wire harness 8 supported by the wire harness holder 9. Fill 30.

The filling operation of the liquid curable filler 30 into the grommet 14 at this time is performed as follows.
That is, when a certain wire harness holder 9 faces the filler filling device 31, a sensor (not shown) detects the arrival of the wire harness holder 9, and the drive source 7
Is given a command to temporarily stop the rotation of the endless carrier 3 for a required filling time. When the rotation of the endless carrier 3 temporarily stops, the first gripper 32 moves forward to grip the wire harness 8 above the grommet 14, and the second gripper 33 moves forward to move the grommet 14. The wire harness 8 is gripped by the lower side. Next, with the first gripper 32 gripping the wire harness 8, the wire harness 8 is twisted by the rotation of the rotary elevating means 36, and then the twist is returned. By performing such an operation, the direction of the electric wires 10 constituting the wire harness 8 can be aligned, and the adjacent electric wires 1 can be formed in the next compression step.
The work of providing a gap 41 between zeros can be easily performed.

Next, while the wire harness 8 is being gripped by the first gripping tool 32, the rotary lifting / lowering means 36 is moved downward to the second gripping tool 33 side, and the first and second gripping tools 32, 3 are moved.
The upper and lower gripping intervals of 3 are narrowed, and by this operation, an operation of opening a gap 41 between the electric wires 10 constituting the wire harness 8 is performed. In a state where a gap 41 is provided between the electric wires 10, a liquid curable filler 30 is filled into each gap 41 while applying a vibration to the wire harness 8 by the vibrator 40, and a water stop portion is provided in the middle of the wire harness 8. 42 is formed.

When the operation is completed, the first and second grippers 32 and 33 release the wire harness 8 to move backward with respect to the wire harness 8, and then the drive source 7 resumes the rotational drive. The endless carrier 3 is driven to rotate at a predetermined speed, whereby each wire harness holder 9 supported by the endless carrier 3 also rotates together at a predetermined speed.

The liquid curable filler 30 in the grommet 14
Hardens in this example to a state in which there is no problem in handling while the endless carrier 3 makes a half turn. The loop length of the endless carrier 3 is short,
When the filler filling device 31 is arranged at a location,
The liquid curable filler 30 in the grommet 14 cures to a state where there is no problem in handling while the endless carrier 3 makes one rotation. The rotation speed of the endless transport device 3 is determined so that such a state can be obtained.

In this way, the filling of the liquid curable filler 30 into the grommets 14 is sequentially performed one by one as the endless carrier 3 rotates, and the curing of the liquid curable filler 30 in each grommet 14 is performed by the endless carrier. If performed during the rotation of 3, the curing time of the liquid curable filler 30 in each grommet 14 can be individually managed without variation. Therefore, the liquid curable filler 30 in the grommet 14 can be removed after being cured to a state in which there is no problem in handling, and the liquid curable filler 30 in an insufficiently cured state is deformed in the next step as in the related art. Can be prevented.

The paired rollers 22a and 22b and the paired rollers 23a and 23b are rotatably supported on the respective wire harness holders 9 at different positions in the vertical direction.
These paired rollers 22a, 22b and paired rollers 23a,
Reference numeral 23b allows the annular rails 26 and 27 arranged along the endless carrier 3 to be rotatably held in the vertical direction so as to bear the load on the wire harness holder 9 and maintain the posture of the wire harness holder 9. , The annular rails 26, 27, the paired rollers 22a, 22b and the paired rollers
Due to the action of the wire harness holders 9a and 23b, the respective wire harness holders 9 can be reliably held in a required vertical orientation and can be circulated. Therefore, it is possible to prevent the liquid curable filler 30 from spilling out of the grommet 14 during the rotation of the endless carrier 3. In addition, FIG.
As shown in (A), when the filler filling device 31 is disposed at a position where the endless transport tool 3 becomes straight from an arc shape, the wire harness 8 in which the liquid curable filler 30 is filled in the grommet 14 is endlessly transported. Since the liquid curable filler 30 is conveyed linearly by the tool 3, the shaking is small, and it is effective to prevent the liquid curable filler 30 from spilling from the grommet 14 during the conveyance. When the vertical dimension of the annular rail is large, the same effect can be achieved even with one annular rail.

Further, the filler filling device 31 twists the wire harness 8 in a state where the wire harness 8 is gripped above and below the grommet 14, returns the twist, and reduces the vertical gripping interval to reduce the wire harness 8. A first and a second gripper 32, 33 for performing an operation of opening a gap 41 between the electric wires 10 constituting the wire 8, a filler injecting machine 34 for filling the liquid curable filler 30 into the grommet 14, When the wire harness 8 is gripped above and below the grommet 14, the wire harness 8
By giving the twist to and returning the twist,
Since the directions of the electric wires 10 constituting the wire harness 8 can be aligned, the work of opening the gap 41 between the adjacent electric wires 10 in the next compression step can be easily performed. Also,
When the gap between the first and second gripping tools 32 and 33 is reduced and the gap 41 is provided between the wires 10 of the wire harness 8, the wire harness 8 where the gap 41 is to be provided between the adjacent wires 10 is formed. The gap 41 can be easily provided between the adjacent electric wires 10 only by performing the operation of compressing in the axial direction, and there is an advantage that the workability is very good.

[0035]

In the apparatus for automatically forming a water stop portion of a wire harness according to the present invention, the filling of the liquid curable filler into the grommets attached to the respective wire harnesses is performed at predetermined intervals in the direction of rotation of the endless carrier. The wire harness holders are supported vertically, and one wire harness is vertically supported by each of these wire harness holders. The rotation is performed for each grommet as the endless carrier rotates, and each grommet is sequentially rotated. Since the curing of the liquid curable filler is performed during the rotation of the endless carrier, the curing time of the liquid curable filler in each grommet can be individually managed without variation. Therefore, the liquid curable filler in the grommet can be removed after being cured to a state in which there is no problem in handling, and the liquid curable filler in an inadequately cured state is deformed in the next step as in the related art. Can be prevented.

[Brief description of the drawings]

FIGS. 1 (A) and 1 (B) are a plan view and a front view showing an example of an embodiment of an automatic forming apparatus of a wire harness water stopping portion according to the present invention.

2A is a cross-sectional view of one wire harness holder of the device shown in FIG. 1, FIG. 2B is a front view of one wire harness holder shown in FIG. 2A, and FIG. It is a top view of one wire harness holder shown to A).

FIG. 3 is a perspective view showing a schematic configuration of a filler filling device at one wire harness holder in the device shown in FIG. 1;

FIGS. 4A to 4C are process diagrams illustrating a process of filling a liquid curable filler into a grommet of a wire harness.

[Explanation of symbols]

 1, 2 Chain 3 Endless carrier 4a, 4b, 5a, 5b Sprocket 6a, 6b Shaft 7 Drive source 8 Wire harness 9 Wire harness holder 10 Electric wire 11 Tape 12 Connector 13 Water stop scheduled to be formed 14 Grommet 14a Large diameter cylinder 14b Small-diameter cylindrical part 15 Taping part 116, 17 Fixture 18a, 18b Stand 19a, 19b Wire harness support 20 Grommet holder 21 Box body 22a, 22b, 23a, 23b Pair-shaped roller 24 Roller holder 25 Roller holder 26, 27 Ring rail 28 Floor surface 29 Annular frame 30 Liquid curable filling material 31 Filling material filling device 32, 33 First and second gripping tools 34 Filling material filling machine 35 Stand 36 Rotary lifting / lowering means 37 Fixing means 38 Hose 39 Nozzle 40 Vibrator 4 Gap 42 water stopper

Continued on the front page (72) Inventor Yasuhiro Fukushima 1000 Amaga, Kojimachi, Inoue-gun, Shiga Prefecture F-term in Omi Electric Wire Co., Ltd. (reference) 5G333 AA09 AB16 AB28 BA02 BA05 CB17 5G363 AA01 BA06 CA06 CB08

Claims (3)

[Claims] 1. An endless carrier having a required shape, which is formed in an annular shape and is rotatably disposed, a driving source for rotating the endless carrier at a required speed, and a predetermined rotation direction provided to the endless carrier. A plurality of wire harness holders which are vertically supported at intervals of and respectively support one wire harness in a vertical direction, and which are provided in each of the wire harness holders and are mounted in the middle of each of the wire harnesses A grommet holder for supporting the grommet, and a liquid in the grommet of the wire harness which is disposed on at least one fixed side in the circumferential direction of the wire harness so as to face the endless carrier and face the process of rotation of the endless carrier. Filling filler material to fill gaps between adjacent wires of the wire harness by filling with a curable filler material. An automatic forming device for a wire harness water shutoff portion, comprising a filling device. 2. A pair of rollers are rotatably supported on the respective wire harness holders at different positions in the vertical direction, and the pair of rollers vertically move an annular rail disposed along the endless carrier. The wire harness water stopping portion according to claim 1, wherein the wire harness holder is held so as to bear the load on the wire harness holder side while being rotatably held in a direction. Automatic forming equipment. 3. The filler filling device twists the wire harness in a state where the wire harness is gripped above and below the grommet, and after untwisting the wire harness, narrows a gripping interval between the upper and lower grommets to reduce the wire harness. It has a structure including first and second grippers for performing an operation of opening a gap between each of the constituent electric wires, and a filler injecting machine for filling a liquid curable filler into the grommet. The apparatus for automatically forming a wire harness water shutoff section according to claim 1 or 2, wherein: