JP3107129B2 - Method and apparatus for assembling chain-shaped electric wire clamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for assembling a chain-shaped electric wire clamp used in an apparatus for manufacturing a wire harness.

[0002]

2. Description of the Related Art With respect to a wire harness manufacturing apparatus, there is a technique described in Japanese Patent Application Laid-Open No. 1-221813. In this technique, as shown in FIG. 8, a plurality of pins P are erected on the upper surface of a wiring board B, and a chain-shaped electric wire clamp A is fixed to one end of the wiring board B. After the wiring table B is positioned at the routing station (not shown), the wiring table B
After a wire W supplied by a wiring head (not shown) provided to be able to move in a horizontal direction above the wire W is routed on a wiring board B, and a terminal T is crimped to an end of the wire W. .

The chain-shaped electric wire clamp A has a plurality of electric wire clamps 2 arranged and accommodated in a support rod 1 having a gutter-shaped cross section. The electric wire clamp 2 has a pair of holding claws 4 on an upper portion of a base 3. (See FIGS. 7 and 8). Then, one end of the wired electric wire W is pushed into the pair of clamping claws 4 when passing through the electric wire clamp 2, and is pinched by the pin P of the wiring board B. The end is pushed into the holding claw 4 of another wire clamp 2 and is held.
Therefore, the position of the electric wire clamp 2 that sandwiches both ends of the electric wire W affects the wiring length and the binding position of the electric wire W and must be accurate.

Next, the assembling work of the chain-shaped electric wire clamp A will be described. First, a clamp stopper 5 (see FIG. 9) is temporarily assembled to one end of the support rod 1. Clamp stopper 5
Is an upper holding plate 6 placed on a bent wall 1a (see FIG. 7) bent inward from the upper end of the supporting rod 1, a lower reference plate 7 inserted inside the supporting rod 1, and a holding plate. 6 and a reference bolt 7 for tightening the reference plate 7 against the bent wall 1a.

Next, in a state where one end of the support rod 1 and the clamp stopper 5 are brought into contact with the backing plate 10 fixed to the end face of the mounting table 9, the tightening bolt 8 is tightened, and the clamp stopper 5 is attached to the support rod 1. Fasten. The first wire clamp 2 is gripped, the base 3 of the wire clamp 2 is inserted from the other end of the support rod 1 (see FIG. 10), and comes into contact with the reference plate 7.
Next, the base 3 of the second wire clamp 2 is brought into contact with the base 3 of the first wire clamp 2. Similarly, a large number of electric wire clamps 2 are arranged and accommodated inside the support rod 1,
The clamp stopper 5 that comes into contact with the base 3 of the wire clamp 2 inserted last is fastened to the other end of the support rod 1.

[0006]

In order to increase the pitch accuracy of each of the arranged wire clamps 2, the wire clamps 2 are required.
The dimensional tolerance of the base 3 needs to be tight. Assuming that the dimensional error of the base 3 of the wire clamp 2 is -0.01 mm, the accumulated error when 115 wire clamps 2 are arranged is -1.15 mm, and the tolerance of the position of each wire clamp 2 (± 0.2 mm) ).

The gap between the base 3 of the wire clamp 2 and the inner surface of the support rod 1 is extremely small so that the wire clamp 2 inserted into the support rod 1 does not swing with respect to the support rod 1. . Therefore, a considerable insertion force is required to insert the wire clamp 2, and the wire clamp 2 which has received the insertion force collides with the inserted wire clamp 2 and receives a mutual compressive force. Is made of plastic, the accumulated error of each wire clamp 2 tends to be negative.

In the actual assembling operation, each time the wire clamp 2 is inserted into the support rod 1, the wire clamp 2 is used as a reference with respect to the first wire clamp 2 abutted by the clamp stopper 5.
This is extremely inefficient because a complicated inspection for measuring the distance of the object by the convex rule must be performed. In addition, when the distance is negative, the adjustment is performed by sandwiching a piece of paper. When the distance is positive, the adjustment is performed by applying a pressing force to elastically compress the base 3, but the operation of elastically compressing is not easy.
There was a problem that it took time to adjust the distance.

In order to prevent the electric wire clamp 2 from rattling in the support rod 1, the clearance between the two is reduced. Therefore, as shown in FIG.
When individually inserted into the support rod 1, there is a problem that the wire clamp 2 does not easily enter the support rod 1 due to slight swinging of the grasped fingertip or inclination of the wire clamp 2. An object of the present invention is to solve such a problem, and the wire clamp 2 can be easily inserted into the support rod 1, so that the work of measuring the distance dimension of the inserted wire clamp 2 is unnecessary, and the accumulated error is an allowable error (± An object of the present invention is to provide a method and an apparatus for assembling a chain-shaped electric wire clamp which can efficiently perform an assembling operation without exceeding 0.2 mm).

[0010]

In order to achieve the above object, a method for assembling a chain-shaped electric wire clamp according to the present invention comprises a plurality of electric wire clamps having a pair of holding claws capable of holding an electric wire at an upper portion of a base. In the assembling of a chain-shaped wire clamp in which a wire rod is arranged at a predetermined pitch inside a support rod having a gutter-shaped cross section and both ends of an arrayed wire clamp are supported by a clamp stopper, a clamp stopper is temporarily assembled at one end. The support rod is inserted into a rod positioning member provided in an assembling apparatus, and both ends of the support rod are sandwiched between an end wall of the rod positioning member and a rod pressing block provided in the assembling apparatus, and the support rod is inserted. After positioning and fixing, a clamp positioning member is slidably inserted into the support rod, and the clamp position is determined by a slider that moves parallel to the rod positioning member and is positioned at a predetermined position. After positioning the clamp stopper via a member and fixing it, inserting a plurality of wire clamps into the support rod, applying the clamp positioning member to the rear end surface of the wire clamp, and then positioning the slider Thus, the rear end face of the wire clamp is positioned via the clamp positioning member, and similarly, each time a predetermined number of wire clamps are inserted, the slider is positioned, whereby the wire clamp is positioned via the clamp positioning member. The cumulative error in the length of the wire clamp row is corrected by positioning the rear end surface of the wire clamp, and the clamp stopper that supports the wire clamp on the rearmost surface is fixed to the support rod.

[0011] The assembly apparatus for carrying out the above method of assembly, multiple
A rod positioning member that positions one end and both side surfaces of a support rod in which several electric wire clamps are arranged therein, and is provided so as to be able to advance and retreat toward the support rod inserted in the rod positioning member, and A support rod positioning and fixing mechanism comprising a rod pressing block for pressing the other end of the support rod and a clamp for pressing the rod pressing block in the forward direction is provided on the upper surface of the substrate, and the inside of the support rod is provided. A clamp positioning member that is slidably inserted, a push-moving portion is provided at one end, and a pushed surface is provided at the other end, and has a sliding surface parallel to the longitudinal direction of the rod positioning member, A guide member provided with positioning grooves at a plurality of positions in a direction, a slider slidable on the sliding surface, and an intermediate portion pivotally attached to the slider, and one end engaged with the positioning groove. Pushing surface formed on the end side And a formed positioning mechanism by a lever arm for pressing the object to be pushed surface. It is preferable that at least one of the pushed surface of the clamp positioning member and the pushed surface of the lever arm is formed with a guiding inclined surface for guiding the other contact.

[0012]

The method of assembling the chain-shaped electric wire clamp constructed as described above will be described. A clamp stopper is temporarily assembled at one end of a support rod and inserted into a rod positioning member.
When the rod pressing block is pressed against the other end of the support rod by the clamp, both ends of the support rod are sandwiched between the end wall of the rod positioning member and the rod pressing block, and are positioned and fixed to the rod positioning member.

Next, the clamp positioning member is inserted into the support rod, the slider is moved along the guide member, and the lever arm is rotated to insert one end into the positioning groove, whereby the slider is positioned and The other end pushes the pressed surface of the clamp positioning member, and the distal end surface of the pressing portion of the clamp positioning member indicates the mounting position of the clamp stopper. The clamp stoppers that provisional-assembly on one end of the support rod is fixed to the contact with the supporting beam on the distal end surface of the pressing portion of the clamp positioning member. Thus, the clamp stopper is fixed at the correct position.

Next, the slider is retracted, the clamp positioning member is removed from the support rod, and a predetermined number of wire clamps and clamp positioning members inserted into the support rod are moved in the direction of the clamp stopper. Is moved along the guide member, and when the lever arm is rotated and one end is inserted into the positioning groove, the slider is positioned, and the pressing surface presses the pressed surface of the clamp positioning member to position the clamp. Since the pushing part of the member is displayed at the correct rear position of the predetermined number of wire clamps, if there is a gap between the pushing part and the rear face of the wire clamp,
Insert a piece of paper with a thickness corresponding to the gap. Conversely, if the pushing portion hits the rear surface of the wire clamp before positioning the slider, the pushing portion presses the wire clamp to correct the accumulated error on the rear surface of the wire clamp.

After the insertion of the final group of wire clamps and the correction of the accumulated error are completed, a clamp stopper in contact with the last surface of the wire clamp is fixed to the other end of the support rod, and the assembling work of the chain-shaped wire clamp is completed. . As described above, each time a wire clamp is inserted, the accumulated error of the wire clamp is corrected, so that the position measurement, which has been performed every time one wire clamp is inserted as in the related art, becomes unnecessary.

[0016]

Referring to the drawings for the embodiment of EXAMPLES The invention Figure 1 is a plan view of the chain-like wire clamping assembly apparatus C, FIG. 2 is a front view of FIG. 1, X-X in FIG. 3 FIG. 2 Sectional view,
Figure 4 is a slider and the clamp positioning member perspective view of the relevant parts, Figure 5 is Y-Y cross-sectional view of FIG. 2, FIG. 6 is a side view of FIG. Explaining the structure of the chain-shaped electric wire clamp assembling apparatus C, a side wall 12 is erected on one side surface of an elongated substrate 11, and a set of rod positioning members 13 is fixed to the upper surface of the substrate 11 (FIGS. 3 and 5). , See FIG. 6).

One set of rod positioning members 13 is for inserting and positioning the support rod 1, and includes an end wall 14 attached to the front end (left end in FIGS. 1 and 2) of the substrate 11.
And the fine adjustment block 1 attached to the left side of the end wall 14
5, a pair of front side walls 16 attached to the right side of the end wall 14, and a pair of rear side walls 17 attached to the pair of side walls 16 on the right side with an interval.

A push screw 19 is screwed into the fine adjustment block 15 in a screw hole 18 penetrating in the front-rear direction.
Is rotated, the position of the end wall 14 is finely adjusted in the front-rear direction. The pair of front side walls 16 is
An upright wall 16b is erected at one end of a bottom wall 16a screwed to the supporting rod 1 between a pair of opposed upright walls 16b.
Is inserted and held (see FIG. 3). The structure of the pair of rear side walls 17 is the same as that of the pair of front side walls 16 (see FIG. 5).

On the right side of the rod positioning member 13, a rod pressing block 20 is provided so as to advance and retreat toward the rod positioning member 13. The upper surface of the rod pressing block 20 has a height that does not hinder the operation of inserting the electric wire clamp 2 from the rear end of the support rod 1.
Is screwed.

The clamp 24 for applying a pressing force to the rod pressing block 20 is constituted by a grip 24a and a screw 24b. A screw support member 23 having a through hole 22 is attached to the right end of the substrate 11, and the screw 24 b is connected to the through hole 2.
2 and screwed into the screw hole 21, and the rod pressing block 20
A spring 25 wound around the screw 24 is inserted between the rear surface of the screw member 23 and the screw support member 23. Therefore, when the rod fixing grip 24 is rotated, the rod pressing block 20 moves back and forth, and is pressed against or separated from the rear end face of the support rod 1 in the rod positioning member 13. Thus, the support rod positioning and fixing mechanism is configured.

The clamp positioning plate 2 is provided on the inner surface of the side wall 12.
6 are fixed, and a plurality of positioning grooves 27 are opened in the longitudinal direction of the clamp positioning plate 26 at a predetermined pitch (a pitch of 60 mm when five wire clamps each having a thickness of 12 mm are inserted in units of five). Provided. The side wall 12 and the clamp positioning plate 26 constitute a guide member 28 for slidingly guiding a slider 29 described below.

The slider 29 is formed with a sliding groove 30 for holding the upper end of the guide member 28, and has a support shaft 31 on the left and right end surfaces.
Is provided (see FIG. 4). The lever arm 32 has a grip portion 33 and both arms 34 fixed to both ends of the grip portion 33 and pivotally attached to the support shaft 31. One (left side in FIG. 4) arm 34 has an outer surface 34a. Is a pressing surface of a clamp positioning member 36 to be described later, and an engagement projection 35 that fits into and disengages from the positioning groove 27 is formed at the end opposite to the grip portion 33.

The clamp positioning member 36 slidably inserted into the inside of the support rod 1 has a handle 38 provided on the upper surface of a base 37, a pushing portion 41 protrudes to the left of the base 37, and a right side of the base 37. A driven surface 40 is formed on the substrate.

A guide inclined surface 40a for facilitating pressure contact with the grip portion 33 is provided above the pressed surface 40, and the grip portion 33 facilitates pressure contact with the pressed surface 40. A guide inclined surface 34b is provided. Clamp positioning member 36
One of the guiding inclined surface 40a provided on the lever arm 32 and the guiding inclined surface 34b provided on the lever arm 32 may be omitted.
As described above, the positioning mechanism of the electric wire clamp 2 is configured.

Next, the assembling apparatus C configured as described above
The method of assembling the chain-shaped electric wire clamp A will be described with reference to FIG. A clamp stopper 5 is temporarily assembled to one end (the left end in FIGS. 1 and 2) of the support rod 1, and the support rod 1 is positioned on the rod positioning member 1.
3 , the rod pressing block 20 is pressed against the other end of the support rod 1 by the clamp 24, and both ends of the support rod 1 are sandwiched between the end wall of the rod positioning member 1 and the rod pressing block 20, thereby positioning and fixing. Is done.

Next, the clamp positioning member 36 with the surface to be pushed 40 facing rearward (right side in FIG. 2) is inserted into the inside of the support rod 1. The slider 29 is moved to the left along the guide member 28, and when the engagement projection 35 approaches the leftmost positioning groove 27a, the lever arm 32 is rotated to move the engagement projection 35 to the positioning groove 27a. is inserted into, the slider 29 is positioned, the arms 34 are pushed to be pushed surface 40 of the clamp positioning member 36, the distal end surface of the pressing portion 41 of the clamp positioning member 36 is a mounting position of the clamp stopper 5 Show. The clamp stopper 5 temporarily assembled to one end of the support rod 1 is fixed to the support rod 1 by abutting on the distal end surface of the pushing portion 41. Thus, the clamp stopper 5 is positioned and fixed at an accurate position.

Next, the slider 29 is retracted to the right, the clamp positioning member 36 is removed from the support rod 1, and a predetermined number (five in this embodiment) of wire clamps 2 are inserted into the support rod 1. Clamp positioning member 36
And move in the direction of the clamp stopper 5. The slider 29, which has receded to the right, is moved along the guide member 28, and when the engagement projection 35 of the lever arm 32 approaches the second positioning groove 27b, the lever arm 32 is rotated and engaged. The protrusion 35 is inserted into the positioning groove 27b.

By the rotation of the lever arm 32, the slider 29 is positioned, and the pressing surface 34a of the lever arm 32 is moved by the pressing surface 4 of the clamp positioning member 36.
0, the leading end surface of the pushing portion 41 of the clamp positioning member 36 is displayed at the correct rear surface position of the predetermined number of wire clamps 2, so that there is a gap between the pushing portion 41 and the rear surface of the wire clamp 2. In some cases, a piece of paper having a thickness corresponding to the gap is inserted. Conversely, when the pushing portion 41 hits the rear surface of the wire clamp 2 before the positioning of the slider 29, the pushing portion 41 presses the wire clamp 2 to correct the accumulated error on the rear surface of the wire clamp 2. .

Insertion of the wire clamp 2 of the last group,
When the correction of the accumulated error is completed, the clamp stopper 5 that is in contact with the last surface of the wire clamp 2 is fixed to the other end of the support rod 1, and the assembling work of the chain-shaped wire clamp A is completed. As described above, every time the wire clamp 2 is inserted, the accumulated error of the wire clamp 2 is corrected, so that the position measurement that has been performed every time one wire clamp 2 is inserted as in the related art is unnecessary. Become.

[0030]

Since the present invention is configured as described above, the following effects can be obtained. (1) When the lever arm of the slider is rotated, the slider is accurately positioned, and the clamp positioning member is pressed to the correct position, and the tip of the pushing portion of the clamp positioning member is inserted in plurals at once. The correct rear surface position of the wire clamp is displayed, eliminating the need for inspection using a convex rule, etc., and assembling work has become more efficient. (2) Since the accumulated error of the wire clamp is corrected for each of the plurality of wire clamps, the tolerance of each wire clamp 2 (±
0.2 mm).

(3) The lever arm of the slider is used as a manual handle for moving the slider, and at the same time has the functions of positioning the slider and pushing the clamp positioning member to the correct position. Is easy.

[Brief description of the drawings]

FIG. 1 is a plan view of a chain-shaped electric wire clamp assembling apparatus.

FIG. 2 is a front view of FIG.

FIG. 3 is a sectional view taken along line XX of FIG. 2;

FIG. 4 is a perspective view showing a relationship between a slider, a clamp positioning member, and related components.

FIG. 5 is a sectional view taken along line YY of FIG. 2;

FIG. 6 is a side view of FIG. 2;

FIG. 7 is a perspective view of a chain-shaped electric wire clamp.

FIG. 8 is a perspective view illustrating a wiring operation by the wire harness manufacturing device.

FIG. 9 is a longitudinal sectional view for explaining a conventional chain-shaped electric wire clamp assembling operation.

FIG. 10 is a perspective view of a conventional operation for inserting a wire clamp into a support rod.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Chain-shaped electric wire clamp C Assembling apparatus 1 Support rod 2 Electric wire clamp 3 Base 4 Clamping claw 5 Clamp stopper 11 Substrate 12 Side plate 13 Rod positioning member 14 End wall 16, 17 Side wall 20 Rod pressing block 24 Clamp 26 Clamp positioning plate 27 Positioning Groove 28 Guide member 29 Slider 32 Lever arm 34a Pushing surface 34b Guide inclined surface 35 Engagement protrusion 36 Clamp positioning member 40 Pushed surface 40a Guide inclined surface 41 Pushing portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 13/00 H01B 13/012 H05K 13/06

Claims (3)

(57) [Claims] 1. An array of wire clamps in which a plurality of wire clamps having a pair of holding claws capable of holding a wire at an upper portion of a base are arranged at a predetermined pitch inside a support rod having a gutter-shaped cross section. In the assembling of the chain-shaped electric wire clamp having both ends supported by the clamp stoppers, the support rod temporarily assembled with the clamp stopper at one end is inserted into a rod positioning member provided in an assembling apparatus, and the end of the rod positioning member is The support rod is positioned and fixed by sandwiching both ends of the support rod with a wall and a rod pressing block provided on an assembly device, and a clamp positioning member is slidably inserted into the support rod, and the rod positioning member is inserted. The clamp stopper is positioned and fixed by the slider which moves in parallel with the slider and is positioned at a predetermined position via the clamp positioning member. After inserting the wire clamp of
The clamp positioning member is applied to the rear end surface of the wire clamp, and then the slider is positioned to position the rear end surface of the wire clamp via the clamp positioning member. Each time you insert a
By positioning the slider, the rear end surface of the wire clamp is positioned via the clamp positioning member to correct the accumulated error in the length of the wire clamp row, and the clamp stopper for supporting the wire clamp on the rearmost surface is supported by the support. How to assemble a chain-shaped electric wire clamp to be fixed to a pole. 2. A plurality of electric wire clamps are arranged inside.
A rod positioning member that positions one end and both side surfaces of the support rod , and a rod that is provided so as to be able to advance and retreat toward the support rod inserted into the rod positioning member, and that pushes the other end of the support rod when moving forward. A support rod positioning and fixing mechanism comprising a pressing block and a clamp for pressing the rod pressing block in the forward direction is provided on the upper surface of the substrate, and is inserted slidably inside the support rod. A clamp positioning member provided with a pressing portion on the other side and a pressed surface on the other side, and a sliding surface parallel to the longitudinal direction of the rod positioning member,
A guide member provided with positioning grooves at a plurality of locations in the longitudinal direction, a slider slidable on the sliding surface, and an intermediate portion pivotally attached to the slider, and one end engaged with the positioning groove. A chain-shaped electric wire clamp assembling apparatus comprising: a positioning mechanism formed by a lever arm having a pressing surface formed on the other end side pressing the pressed surface. To 3. At least one of the target pushing surface and pushing surface of the lever arm of said wire clamp positioning member, characterized in that the guiding inclined surface for guiding the other abutment is formed claimed Item 3. A chain-shaped electric wire clamp assembling apparatus according to Item 2.