JP2000173740A - Automatic electric wire jointing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To twist conductors together with high accuracy by peeling a coating in a connection part of a coated electric wire, overlapping the connection parts together, driving a pair of chucks clamping the overlapped connection parts, and twisting and jointing the connection parts of both coated electric wires together. SOLUTION: Connection parts of coated electric wires W1, W2 in lines L1, L2 are peeled by a semi-strip unit 30, while electric wire end part coatings are left unpeeled. After the peeled parts are overlapped to each other to be clamped, they are twisted together by means of a twist unit 50. Therefore, no deviation is caused in the connection in respective conductors of the electric wires W1, W2, and a satisfactory strand is provided. In peeling work of the electric wire W1 in the present lot, tension is applied to the electric wire W1 when the connection parts are overlapped and twisted together, so that positioning precision can be improved. In this way, deviations in the conductor parts of the electric wires W1, W2 can be prevented in the connection, and a satisfactory strand can be provided, so that the conductors of the electric wires W1, W2 can be twisted with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic electric wire joint device.

[0002]

2. Description of the Related Art The applicant of the present invention has proposed a soldering type insulated wire connecting device as a device for automatically connecting the terminals of the insulated wire (Japanese Patent Application Laid-Open No. HEI 10-108).
64653). The connecting device includes a semi-strip unit for automatically stripping the ends of two covered electric wires to be connected, and a unit for bundling and exposing the stripped and exposed core portions.

[0003]

In the above-mentioned connecting apparatus, since welding is employed as a means for connecting the electric wires, there is a problem that running cost for connection is increased and connection time is lengthened. On the other hand, if the automatic connection of the wires is automated, running costs can be reduced.However, since the specifications and conditions of the covered wires vary widely, if the twisting work is automated, a stable It was difficult to obtain a connected state.

[0004] The present invention has been made in view of the above-mentioned problems, and has as its object to provide an automatic electric wire joint device capable of twisting core wires of a covered electric wire with high precision.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a feed line for feeding a coated wire to a wire processing machine, and a coated wire of a current lot fed to the feed line. A supply line for supplying the next lot of covered electric wire to be connected is provided, and a connection portion is formed between the end side of the above-described current covered wire and the leading end side of the next lot of covered electric wire, and both connection portions are automatically formed. A semi-strip unit that twists a covered portion of a covered electric wire in each line while leaving a covering portion of the covered electric wire in an end portion, and a coating stripped by the semi-strip unit. It has joining means for overlapping the connecting portions of the electric wires, and a pair of chucks for clamping the joined connecting portions. It and a twist device for forming an automatic wire joint device according to claim.

[0006] In the invention including this specific matter, the connection portion is subjected to skinning with the covering portion left over at the end portion of the covered wire of the current lot and the tip portion of the covered wire of the next lot, and the core portion is exposed. . The two electric wires are twisted by the twisting means in a state where the two connecting parts are overlapped by the joining means, whereby the connecting parts are twisted and connected.

[0007] Since the connecting portion is peeled off in any of the insulated wires with the covering portion left on the end side, the core portion of the insulated wire does not disperse at the time of connection, resulting in good twisting. It becomes possible to obtain a matching state.
In a preferred embodiment, a tension applying means for applying tension to the coated electric wire of the current lot in cooperation with the clamp of the twist means at the time of peeling the coated electric wire of the current lot is further provided, and the joining means comprises The connecting portions of the two covered electric wires are overlapped while maintaining the tension acting on the connecting portions of the electric wires.

[0008] In the invention including this specific matter, the coated electric wire of the current lot fed to the electric wire processing device is subjected to skinning while being tensioned, and further twisted in a superposed state. The positioning accuracy is improved, and the behavior at the time of twisting is also improved.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A preferred embodiment of the present invention will be described in detail. FIG. 1 is a front view of a joint device 10 according to an embodiment of the present invention, and FIG. 2 is a side view of the joint device 10 of FIG.

Referring to these drawings, a joint device 10 according to the illustrated embodiment has a plurality (two in the illustrated example).
A) a base 11 on which the electric wire bundle W can be placed;
And a mounting plate 13 carried by a pair of pillars 12 erected behind the base 11. On both left and right sides of the mounting plate 13, a wire bundle W for a wire processing device (not shown) is provided. A feed line L1 for feeding the covered electric wire W1
And a supply line L2 for supplying a covered electric wire W2 of the next lot to be connected to the covered electric wire W1 are set in parallel with each other.

Then, when connecting the covered electric wire W2 of the next lot to the covered electric wire W1 of the current lot at a predetermined timing, the covered electric wire W2 is set in each unit set in the supply line L2, and a start switch is set. By simply operating the switch SW, the covered electric wire W1 and the covered electric wire W2 are automatically connected. FIG. 3 is an enlarged schematic front view showing a main part of the joint device 10 in FIG. 1, and FIG. 4 is a perspective view showing a configuration of a supply chuck unit employed in the joint device 10 in FIG.

Referring also to these figures, a supply chuck unit 20 is mounted on the mounting plate 13.
The supply chuck unit 20 is used when an operator supplies the next lot of the covered electric wire W2 to the joint device 10, and includes a stay 21 protruding forward from the mounting plate 13 and a distal end portion of the stay 21. The rotary table 22 is attached to the stay 21 via the rotary table 22, and the reciprocating cylinder 23 is rotatable about a vertical line. The reciprocating cylinder 23 allows the reciprocating cylinder 23 to reciprocate in the longitudinal direction of the reciprocating cylinder 23. A possible supply chuck 24 and a shaft 22a of the rotary table 22 for changing the attitude of the supply chuck 24 within a range of 90 °.
And a rotating cylinder 26 for driving the reciprocating cylinder 23 around the shaft 22a via a link 25 connected to the supply chuck 24.
2, the coated electric wire W2 can be supplied. Here, the supply chuck 24 supplies the covered electric wire W2 clamped to the chuck portion 24a by the rotary cylinder 26 along the right angle in the longitudinal direction to the mounting plate 13 side as shown by a solid line in FIG. As shown by the imaginary line in FIG. 4, the chuck portion 24 a rotates forward to be displaceable between the processing posture along the line L <b> 2 and the supply posture facing the worker in front of the joint device 10. Has become.

Further, the supply chuck 24 is moved by the reciprocating cylinder 23 carrying the supply chuck 24.
The above-described processing posture indicated by the solid line in FIG. 4 and the conveyance posture in which the advance / retreat cylinder 23 extends from this processing posture and the covered electric wire W2 clamped by the chuck portion 24a can be substantially along the feed line L1 (see FIG. 3). It can be displaced between and.

Next, with reference to FIGS. 1 to 3, the mounting plate 13 has a semi-strip unit 30 for peeling the covered electric wire W2 clamped on the chuck portion 24a in the processing position. Installed. The semi-strip unit 30 includes a motor 31 mounted on the back surface of the mounting plate 13, a support frame 32 rotatable in both directions by 180 ° by the motor 31, a cutter 33 supported by the support frame 32, Cutter 34,
And a peeling clamp 35.

FIG. 5 is a schematic plan view showing a main part of the semi-strip unit 30. Referring to the figure also, the cutter 33, the peeling cutter 34, and the peeling clamp 35 all have air cylinders 33a, 34a, 35a, and are well-known units that are opened and closed by these air cylinders 33a to 35a. The blades 33b, 34b and the clamp 35b are disposed on the carrier frame 32 so as to open and close on a plane orthogonal to the same line. At the same time, the support frame 32 is bidirectionally rotated within a range of 180 ° around a horizontal axis orthogonal to the mounting plate 13, and as shown by the solid line in FIG. Cutter 33, peeling cutter 3
4. The supply side posture in which the peeling clamp 35 opens and closes on the supply line L2 and the supply side posture in which it opens and closes on the supply line L1 as shown by the imaginary line in FIG. It has become.

The semi-strip unit 30 is provided with a peeling cylinder 36 (see FIG. 2), and the cutters 33 and 34 are moved relative to the peeling clamp 35 by the lines L1 and L2 by the peeling cylinder 36. It can be displaced along L2. When the semi-strip unit 30 peels off the coated wire W2 on the supply side, that is, the next lot, a cylindrical guide member 38 for guiding the end of the coated wire W2 is connected to the mounting plate 13 via a stay 38a. And along the supply line L2. The guide member 38 is for maintaining the posture of the covered electric wire W2 vertically in a step of peeling the covered electric wire W2 described later.

Here, as shown in FIG. 6, the covered electric wires W1 and W2, which have been peeled and cut by the semi-strip unit 30, have their connecting portions, each of which has the covering portion 1 at the end. In this state, the skin is peeled off with the core wire portion 2 exposed. Further, with reference to FIG. 3, the mounting plate 13 is provided with a processing unit 40 for processing the covered electric wire W1 of the current lot. This processing unit 40
The electric wire overlapping clamp 41, the opening / closing guide 42, and the air nipper 43 are arranged in this order from the top along the feed line L1, and are fixed to the mounting plate 13 via the stay 45. Like the cutter 33 of the strip unit 30, the feed line L1 is opened and closed by an air cylinder.

Further, the stay 45 is provided with a tension applying cylinder 46, and the tension applying cylinder 46 allows the tension applying clamp 4 to move up and down along the feed line L1.
7 are provided. The tension applying clamp 47 applies a tension to the coated electric wire W1 of the current lot on the feed line L1 at a predetermined timing described later.

Next, a twist unit for aligning the covered electric wires W1 and W2 will be described with reference to FIGS. 1 and 2 and FIGS. 7 and 8. 7 and 8 are side sectional views of the twist unit employed in the joint device 10 of FIG. Referring to these figures, a twist unit 50 includes an elevating body 52 attached to a twist elevating cylinder 51 fixed to the mounting plate 13 and a motor 53 carried via the elevating body 52.
And a driving gear 5 fixed to a shaft 53a of the motor 53.
4 and a driven gear 55 that meshes with the driving gear 54, and furthermore, a pair of chucks 57 attached to the lower surface of the driven gear 55 via a hinge 56 on the feed line L1 to cover the insulated wire W1 ( W2) can be clamped.

The driven gear 55 has a hollow sleeve 55
a and a bearing 55b so as to be rotatable about a vertical line. And, the axis of the feed line L1
Along with the insulated wire W along the feed line L1.
1 can be rotated while being allowed to be fed. The chuck 57 is connected to the hinge 56.
Arm 57a, which is cantilevered, a pressing piece 57b, which is pivotally supported on the free end of the arm 57a, and a leaf spring 57c, which is mounted on the free end of the arm 57a and biases the pressing piece 57b. Each of the holding members 56 is capable of being displaced by the hinge 56 into a clamping posture in which the pressing members 57b are joined to each other in an engaging manner, and an open posture in which the pressing members 57b open.

In order to open and close the chuck 57, the arm 57a is linked to the inner peripheral side of an annular elevating ring 60. The elevating ring 60 is arranged concentrically with the driven gear 55, and is configured to be able to elevate and lower in the axial direction via a guide rod 61. When the elevating ring 60 is located on the lower side, as shown in FIG. 7, the opposing interval of the free end side of each chuck 57 is widened, and each chuck 57 is displaced to the open position and located on the upper side. By doing
The free ends of the chucks 57 are tightened in a wedge shape so that each chuck 57 is displaced to a clamp posture.

A circumferential groove 6 is formed on the outer peripheral surface of the elevating ring 60.
3 are formed, and the cam rollers 6 linked to the circumferential groove 63 are formed.
The connecting member 65 is attached through the fourth member 4. The connecting member 65 is driven up and down by an opening / closing cylinder 66 attached to the elevating body 52, and the driving force of the opening / closing cylinder 66 is transmitted from the cam roller 64 to the elevating ring 60 so that the chuck 57 is moved. It can be opened and closed.

In FIG. 1, reference numeral 70 denotes a control box, which houses a microcomputer and other electric components for controlling the operation of each of the above-described parts. The start switch SW provided in the control box 70
By operating, each unit described above operates in the following procedure. FIG. 9 is a timing chart of the joint device 10 of FIG. FIGS. 10 to 14
FIG. 4 is an operation explanatory diagram schematically showing the operation of the embodiment in FIG. 1.

Referring to FIG. 2, each of the above-mentioned portions is in an initial state when the covered electric wire W1 of the current lot is being processed by an electric wire processing device (not shown), and the covered electric wire unwound from the electric wire bundle W. W1 is allowed to be fed along the feed line L1. In this initial state (standby state), the rotary cylinder 26 has displaced the supply chuck 24 of the supply chuck unit 20 shown in FIG. In this state, when the operator sets the covered electric wire W2 of the next lot in the chuck portion 24a and operates the start switch SW, the rotating cylinder 26 is operated, and the supply chuck unit 20 is displaced to the processing posture shown by the solid line in FIG. (See FIG. 10A).

Next, in the initial state, the stripping clamp 35 of the semi-strip unit 30 (see FIG. 3) in the supply side posture is first activated to clamp the supplied coated wire W2 of the next lot. Next, as shown by the imaginary line in FIG. 10 (B), the portion corresponding to the connection portion of the covered electric wire W2 to which the peeling cutter 34 is clamped is closed, and the covered portion is cut. Thereafter, the peeling cylinder 36 is operated, and the cutter 33 and the peeling cutter 34 are moved to the peeling clamp 35.
, And as shown by the solid line in FIG.
Perform a peeling operation.

When the peeling is completed, first, the peeling cutter 3
4 is opened, and then the peeling cylinder 36 is moved to each cutter 3.
3. Lower 34 once. Next, the cutter 33 is driven, and the coated electric wire W2 is cut. As described above, the coated electric wire W2 is cut in a semistrip state in which the coated portion 1 is slightly left at the end of the coated electric wire W2 (see FIGS. 6 and 10C).

When this step is completed (or earlier), in the illustrated embodiment, on the feeding side, the tension applying clamp 47 and the twist chuck 5 are used.
7 simultaneously clamps the covered electric wire W1 of the current lot, and after the clamping, as shown by the arrow in FIG. 11 (A), the tension applying cylinder 46 operates to apply the tension to the covered electric wire W1 between the two. At the end of this tensioning step,
As shown by the arrow in FIG. 11A, the open / close guide 42 is closed and the covered electric wire W1 of the current lot is guided.

Thereafter, the semi-strip unit rotating motor 31 rotates the semi-strip unit 30 by 180 ° to displace it to the feeding side posture (see FIG. 11B).
Further, when the semi-strip unit 30 is reversed and displaced to the feeding side posture, as shown in FIG. 11C, the coated electric wire W1 of the current lot to which the tension is applied as described above.
Is clamped by a peeling clamp 35, and the coated electric wire W1 is
Is passed. Next, after the coated wire W1 of the current lot is cut by the air nipper 43, these return to the origin in the order of the tension applying clamp 47 and the tension applying cylinder 46, as shown in FIGS. 12A and 12B. The stripping process by the semi-strip unit 30 is performed in the same manner as described above (however, the up and down direction is reversed), and the connection portion is stripped with the covering portion 1 left over at the end of the covered wire W1.

Then, when the cutter 33 cuts the end of the covered electric wire W1 in this peeling step, as shown in FIG. 13 (A), the advance / retreat cylinder 23 of the supply chuck unit 20 operates to cover the next lot. The electric wire W2 is overlaid on the stripped electric wire W1 of the current lot from which the skin has been stripped (see FIG. 6). In the example shown in the figure, at the time of completion of the superimposing step, the lifting / lowering body 52 is moved by the lifting / lowering cylinder 51 for twist so that the chuck 57 can clamp the connecting portion.
Descends. Then, FIG. 13 (B) and FIG. 14 (A)
As shown in (1), the electric wire overlapping clamp 41 of the processing unit 40 provided on the feeding side and the twist chuck 57 operate to clamp the connecting portion (overlapping portion) of both the coated electric wires W1, W2. (See FIG. 6).

Thereafter, as shown in FIG. 14B, the motor 53 is operated to rotate the chuck 57 via the driven gear 55, and the lifting cylinder 51 raises the chuck 57, so that the covered electric wire W1 is moved. , W2 are twisted while tension is applied between the overlapping clamp 41 and the chuck 57. Then, after the chuck 57 is completely lifted, the twist motor 53 is stopped, the chuck 57 is opened, and each part returns to the initial state, and the covered electric wire W2 is connected to W1. Therefore, thereafter, the connected covered electric wire W2 is connected to the feed line L
1 (see FIG. 14C).

As described above, in the above-described embodiment, the connecting portions of the insulated wires W1, W2 in the lines L1, L2 are peeled off with the covering portions of the insulated wires W1, W2 left over at the ends. A semi-strip unit 30 is provided as a semi-strip unit for performing the above-mentioned operations.
After being clamped at 1, the twisting is performed by the twisting unit 50 as a twisting means, so that the core portions 2 and 2 of the insulated wires W1 and W2 do not vary at the time of connection, and a good twisted state can be obtained. .

Further, in the above embodiment, at the time of peeling the covered electric wire W1 of the current lot, the tension applying means (the tension applying cylinder 46, the tension applying cylinder 46, which applies the tension to the coated electric wire W1 of the current lot in cooperation with the chuck 57). A tension applying clamp 47) is further provided, and the two covered electric wires W1,
Since the connecting portions of W2 are overlapped, the positioning accuracy is enhanced, and the behavior at the time of twisting is also improved.

Therefore, in the above-described embodiment, the core portions of the insulated wires W1 and W2 do not vary at the time of connection,
Since a good twisted state can be obtained, there is a remarkable effect that the core wires of the covered electric wires W1 and W2 can be accurately twisted. In the above-described embodiment,
The present invention is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[0034]

As described above, according to the present invention,
At the time of connection, the core portion of the coated electric wire does not vary, and a good twisted state can be obtained, so that there is a remarkable effect that the core wires of the coated electric wire can be twisted with high accuracy.

[Brief description of the drawings]

FIG. 1 is a front view of a joint device according to an embodiment of the present invention.

FIG. 2 is a side view of the joint device of FIG. 1;

FIG. 3 is a front partial schematic diagram showing an enlarged main part of the joint device of FIG. 1;

FIG. 4 is a perspective view showing a configuration of a supply chuck unit employed in the joint device of FIG.

FIG. 5 is a schematic plan view showing a main part of the semi-strip unit.

FIG. 6 is a schematic view showing a connection state of the covered electric wires.

FIG. 7 is a side sectional view of a twist unit employed in the joint device of FIG. 1;

FIG. 8 is a side sectional view of a twist unit employed in the joint device of FIG. 1;

FIG. 9 is a timing chart of the joint device of FIG. 1;

FIG. 10 is an explanatory diagram schematically showing an operation of the joint device of FIG. 1;

FIG. 11 is an explanatory diagram schematically showing the operation of the joint device of FIG. 1;

FIG. 12 is an explanatory diagram schematically showing an operation of the joint device of FIG. 1;

FIG. 13 is an explanatory diagram schematically showing an operation of the joint device of FIG. 1;

FIG. 14 is an explanatory diagram schematically showing an operation of the joint device of FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 coating portion 2 core wire portion 10 joint device 20 supply chuck unit 23 advance / retreat cylinder 30 semi-strip unit 40 processing unit 41 clamp 42 opening / closing guide 46 tension applying cylinder 47 tension applying clamp 50 twist unit 57 chuck L1 feed line L2 supply line W1 coating Wire W2 Insulated wire

Claims (2)

[Claims] 1. A supply line for supplying a covered electric wire to a wire processing machine, and a supply line for supplying a covered electric wire of the next lot connected to the covered electric wire of the current lot supplied to the supply line. ,
A wire joint device for forming a connecting portion between the end side of the covered wire of the current lot and the leading end side of the covered wire of the next lot and automatically twisting both connecting portions, wherein the covering of the covered wire in each line is performed. A semi-strip unit for peeling the connection portion of the covered electric wire with the portion left over at the end, a joining means for superimposing the connection portions of the covered wires peeled by the semi-strip unit, and a joined connection portion. An automatic electric wire joint device comprising: a pair of chucks for clamping, and a twist means for relatively driving the chucks to apply a twist to a connecting portion of the both coated electric wires to connect the both electric wires. . 2. An automatic electric wire joint apparatus according to claim 1, wherein a tension applying means for applying a tension to said coated electric wire of said current lot in cooperation with a clamp of said twisting means at the time of peeling the coated electric wire of said current lot. An automatic electric wire joint apparatus, wherein the joining means overlaps the connecting portions of both the coated wires while maintaining the tension acting on the connecting portions of the coated wires.