JP2002050248A - Device for twisting electric wires - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for twisting electric wires, which can preclude entangling of electric wires during twisting, thereby obtaining a high yield and a high workability. SOLUTION: In the device of this invention, a vibration-regulating means 150 is arranged in the neighborhood of the other ends of electric-wire pairs WP. This vibration-regulating means 150 regulates the waggling motion of each electric-wire pair WP when the twist clamps 120 start to be rotated by the rotation-driving machine 101. When a plurality of the electric-wire pairs WP are simultaneously driven to be twisted, the regulating means 150 regulates the waggling motions of the electric-wire pairs WP in the neighborhood of their other ends, and consequently there occurs no entangling of the electric-wire pairs due to their waggling motions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire twisting apparatus.

[0002]

2. Description of the Related Art In general, a so-called twisted wire is known as a highly reliable signal transmission wire which is hardly affected by transmission noise and the like. This twisted wire is manufactured by relatively twisting a pair of electric wires (referred to as “twist processing” in this specification) (for example, Japanese Unexamined Patent Application Publication No.
-249957). Conventionally, twist processing
One end clamp for clamping one end of a pair of electric wires (hereinafter referred to as “wire pair”) and the other end clamp for clamping the other end are provided by twisting both clamps relatively. Was.

[0003] The one end side clamp and the other end side clamp are a plurality of pairs (for example, 10 pairs), and a plurality of pairs of electric wires are arranged in parallel so that twist driving can be performed simultaneously. Had become.

[0004]

In the above-mentioned prior art, it is necessary to clamp each pair of wires in parallel with each other as close as possible from the viewpoint of workability and installation space.
However, when each wire pair is brought close to each other, one twisted wire pair is likely to be entangled with the adjacent wire pair during the twist operation, resulting in a problem that the yield is deteriorated. On the other hand, if the distance between each pair of wires is set to be large in order to prevent entanglement, the entire device becomes large and the manufacturing cost increases. In addition, since the range in which the worker moves is increased, the workability may be reduced.

The present invention has been made in view of the above-described problems, and has as its object to provide an electric wire twist processing apparatus which prevents an electric wire pair from being entangled during a twist operation, and thus has a high yield and good workability.

[0006]

Means for Solving the Problems As a result of earnest studies, the present inventors have found that the above-mentioned problem is caused by the displacement of the wire pair at the start of the wire twist, and have completed the present invention.

That is, in order to solve the above problem, the present invention provides a fixed clamp for fixing one end of a pair of wires, and a plurality of clamps for individually clamping the other end of the pair of wires so as to be capable of being twist-driven. A twist clamp, and a rotation drive mechanism that simultaneously rotates the twist clamp,
In a twist processing apparatus that simultaneously processes a plurality of wire pairs into a twist wire, the twist wire is disposed near the other end of the wire pair,
An electric wire twisting apparatus characterized in that a vibration restricting means for restricting deflection of each electric wire pair at the start of rotation of a twist clamp by a rotation drive mechanism is provided.

According to the present invention, when a plurality of wire pairs are simultaneously twisted and driven, the vibration restricting means restricts the shake near the other end of the wire pair, so that the wire pair is entangled due to the shake. Disappears.

In the present invention, the fixed clamp and the twist clamp are generally provided in one-to-one correspondence. However, the present invention is not limited thereto. For example, the fixed clamp clamps one end of a plurality of wire pairs in a bundled state, and further includes a partition member for partitioning between the plurality of wire pairs whose one end is clamped by the fixed clamp. Is preferred.

With this configuration, the wire pairs clamped by the plurality of twist clamps can be twisted by one fixed clamp, so that the operation of attaching each wire pair and the operation of removing the twisted wire after the twisting are performed. Dramatically simplified. Also, the partition member can prevent the wire pairs bundled in the fixed clamp from being entangled.

In still another aspect, the vibration restricting means comprises a contact member capable of contacting each wire pair, and a contact member.
A clamp release member for displacing between a contact position where the contact member contacts each wire pair and a retracted position for retracting from each wire pair, and the contact member displaces to the contact position, and the twist clamp A control unit that controls the clamp release member so that the contact member retracts to the retracted position before the rotation operation ends.

According to this aspect, when the start switch is operated, the contact member comes into contact with each wire pair prior to the rotation operation of the twist clamp. Therefore, it is possible to reliably prevent the wire pair from being displaced at the start of the rotation operation. As well as
Since the contact member is retracted to the retracted position before the rotation operation is completed, the contact member does not hinder the work in the operation of removing the twisted wire pair (that is, the twisted wire).

[0013]

FIG. 1 is a schematic plan view of a twist processing apparatus according to an embodiment of the present invention, and FIG. 2 is a perspective view of a clamp portion at one end of the twist wire shown in FIG.
(A) shows the clamp release state, and (B) shows the clamp state. 3A and 3B are schematic cross-sectional views of FIG. 2, wherein FIG. 3A shows a clamp release state, and FIG. 3B shows a clamp state. FIG. 4 is a perspective view showing a clamp on the other end of the twisted wire.

First, referring to FIG. 1, this twist processing apparatus 10 comprises a fixed clamp station 20 for clamping one end of a wire pair WP comprising a pair of wires, and a twist clamp for clamping the other end. Station 10
0. And both stations 20, 10
By twisting the wire pair WP whose ends are fixed between 0 by the twist clamp unit 110 provided in the twist clamp station 100, each wire pair W
This is for subjecting P to twist processing.

In the following description, it is assumed that one end side from the other end side is supposed to be forward in the stretching direction.

The fixed clamp station 20 has a base 21 formed in a substantially rectangular shape in plan view. On the gantry 21, a pair of clamp units 22 are arranged.

As shown in FIG. 2, the base 21 is provided with guide ribs 21a extending along the direction in which the wire pair WP is stretched, corresponding to each clamp unit 22 (only one of which is shown in FIGS. 2A and 2B). The guide rib 21a guides the guide rib 21a so that it can be displaced back and forth.

Further, a stay 2 is provided on the front of the base 21.
3 is fixed, and a tension coil spring 23 is stretched between a projection 23a erected on the free end of the stay 23 and a projection 22a erected on the clamp unit 22.
As a result, the clamp unit 22 is always urged forward (that is, in a direction in which tension is applied to the wire pair WP between the clamp unit 22 and the twist clamp station 100).

The clamp unit 22 has a base 24 having a concave portion 24a at the bottom for fitting into the guide rib 21a, a fixed clamp piece 25a erected on the base 24, and cooperates with the fixed clamp piece 25a. A movable clamp piece 25b for clamping one end of the wire pair WP by
An air cylinder 26 for reciprocating the movable clamp piece 25b and a stay 27 for attaching the air cylinder 26 to the base 24 are provided.

The base 24 is formed by fitting the recess 24a into the guide rib 21a of the gantry 21.
It is slidably arranged back and forth.

FIGS. 2A and 2B and FIGS. 3A and 3B
As shown in FIG. 5, a pair of clamp pieces 25a and 25b provided on the base 24 are formed such that the fixed-side clamp piece 25a is formed in a concave and convex shape capable of fitting / removing the movable-side clamp piece 25b in a plane. I have. In addition, substantially V-shaped concave portions 25c and 25d are formed at the opposing portions of the clamp pieces 25a and 25b, respectively.
2 (B) by arranging one end side of the wire pair WP in a bundle between c and 25d, extending the rod 26a of the air cylinder 26 and fitting the movable clamp piece 25b into the fixed clamp piece 25a. In addition, as shown in FIG. 3 (B), a bundle of wire pairs WP can be sandwiched between both clamp pieces 25a and 25b.

Next, the surface of the base 24 facing the twist clamp station 100 is provided with
Is provided. The entanglement preventing device 30 has a support member 31 protruding in a cantilever manner toward the twist clamp station 100 and a partition pin 32 erected on a free end side of the support member 31.

As shown in FIG. 2 (B), the entanglement preventing device 30 sorts a plurality of wire pairs WP clamped by both clamp pieces 25a and 25b. Is divided for each wire pair WP to prevent the wire pair WP from being entangled on the fixed clamp station 20 side during the twisting process described later. In order to fulfill the above role, it is desirable that the spacing between the partition pins 32, 32 be sufficiently spaced along a direction intersecting the direction in which the wire pairs WP are stretched.

As shown in FIG. 1, one of the above-mentioned clamp units 22 is provided with a twist clamp unit 110 provided in a twist clamp station 100 described below, for example, by five. Have been. Thereby, in the fixed clamp station 20, it is possible to attach / detach one end side of all wire pairs WP only by attaching / detaching operation of two clamps.

Next, the twist clamp station 10
0 will be described with reference to FIG.

FIG. 4 is a perspective view showing a schematic configuration of the twist clamp station 100 according to the embodiment of FIG. 1. FIG. 5 is a perspective view showing the twist clamp station 100 of FIG.
3A is a perspective view of the twist clamp unit 110, and FIG. 3A illustrates a clamp released state, and FIG. 3B illustrates a clamp state.

With reference to these drawings, the twist clamp station 100 has a drive unit 101 and a plurality of twist clamp units 110 provided in the drive unit 101.

The drive unit 101 includes a housing 101a.
And a drive source such as a motor therein, and a plurality of twist clamp units 110 arranged in a direction perpendicular to the direction in which the wire pair WP is stretched can be rotationally driven by a power transmission mechanism (not shown). ing.

Referring to FIGS. 5A and 5B, each twist clamp unit 110 includes a rotating shaft 111 connected to the power transmission mechanism, a pillow block bearing 112 supporting the rotating shaft 111, and a rotating shaft. A clamp table 114 attached to the tip of the shaft 111;
And a toggle clamp 120 as a twist clamp fixed to the switch.

The toggle clamp 120 includes a stay 121 fixed on the clamp table 114, an operation handle 123 having a base portion rotatable around a shaft 122 with respect to the stay 121, and an operation handle 123. Handle 12
3 includes a rotating arm 126 connected to the middle part of the third arm via links 124 and 125, a pressing rod 127 fixed to the rotating arm 126, and a pressing member 128 fixed to an end of the pressing rod 127. Have.

Then, as shown in FIG. 5A, when the operation handle 123 is tilted, the pressing member 128 floats from the clamp table 114 so that the clamp of the wire pair WP can be released. Has become
As shown in FIG. 5 (B), when the operation handle 123 is almost up, the pressing member 128 is pressed against the clamp table 114 so that the wire pair WP can be sandwiched therebetween. In the illustrated example, the pressing rod 127 is embodied by a bolt, and the bolt 127
The protrusion height can be adjusted by a nut 127a screwed into the rotary arm 126 and a female screw provided on the rotating arm 126.

The upper surface of the clamp table 114 is set on the center line of the rotating shaft 111 (see FIG. 7 described later).
(See (A) and (B)). For this reason, the wire pair WP clamped on the upper surface of the clamp table 114 by the pressing member 128 is rotated around the rotation shaft 111 and twisted by being clamped at one end to the fixed clamp station 20 described above. , Which is to be twisted.

Further, in the illustrated embodiment, the drive unit 101 is configured such that the rotation posture of the twist clamp unit 110 is always in a fixed state (ie, the operation handle 123 of the toggle clamp 120 in the clamp state is substantially vertical). (Standing along the line).

In the illustrated embodiment, a clamp release mechanism 140 for simultaneously releasing the toggle clamps 120 provided in the twist clamp station 100 is provided.

FIG. 6 is a perspective view showing a main part of the clamp release mechanism according to the embodiment of FIG. 1, and FIG. 7 is a schematic side view showing the operation of the clamp release mechanism of FIG.

Referring to FIG. 4, FIG. 6 and FIG. 7, a pair of vertical cylinders 141 and a pair of vertical cylinders 141 are provided in the housing 101a.
The horizontal cylinder 142 includes a horizontal cylinder 142 that can be displaced up and down by a rod 141 a, and a release bar (clamp release member) 143 that moves horizontally by the horizontal cylinder 142. Each of the cylinders 141 and 142 is embodied by an air cylinder, and moves forward and backward at a predetermined timing in conjunction with the operation of the drive unit 101 described later.

The origin of the release bar 143 is set behind the upright operation handle 123 (FIG. 7A).
reference). First, when the vertical cylinder 141 lifts the horizontal cylinder 142 upward, the release bar 143 is shifted slightly above the operation handle 123 through the horizontal cylinder 142 as shown in FIG. 7A. You can do it. Next, from this state, the horizontal cylinder 142 causes the release bar 143 to protrude forward, so that the release bar 143 can be displaced forward from the operation handle 123 as shown in FIG. ing. Further, from this state, the vertical cylinder 141 shortens the rod, and as shown in FIG.
It faces the front of the operation handle 123. As a result, the horizontal cylinder 142 is again moved from the state where the release bar 143 is located at the position shown in FIG.
3 to return to the home position, the release bar 143 drives the operation handles 123 of the toggle clamps 120 in the clamp release direction at the same time by this return operation, and as shown in FIG. 120 can be released at the same time.

The twist clamp station 10
0 by simultaneously releasing the respective toggle clamps 120, the wire pair (twisted wire at this stage) WP on the other end side
Is completely free, so the free wire pair W
In order to receive P, in the illustrated embodiment, as shown in FIGS. 1 and 4, an electric wire receiving bar 148 extending in a cantilever manner to the left and right below the electric wire pair WP is provided.

Further, in the present embodiment, the twist clamp station 100 is provided with a vibration regulating mechanism (vibration regulating means) 150 for preventing the wire pair WP from being displaced at the start of the twist.

FIG. 8 is an enlarged perspective view of a main part showing a schematic configuration of the vibration regulating mechanism according to the embodiment of FIG.

Referring to FIGS. 4 and 8, a vibration restricting mechanism 150 includes a stay 151 fixed to the upper surface of the recess of the housing 101a having a gate-like outer shape,
1 and an air cylinder 152 that projects obliquely
And a bar 154 (contact member) attached to the rod 152 a of the air cylinder 152.

FIGS. 9A and 9B are schematic side views showing the operation of the vibration restricting mechanism 150 according to the embodiment of FIG. 1, wherein FIG. 9A shows the retracted state and FIG. 9B shows the vibration restricted state.

Referring to FIG.
The center portion of the bar 154 is attached to the rod 152a via an attachment 153. Bar 15
4 has a length that can cross all the wire pairs WP clamped by each twist clamp unit 110. When the rod 152a is contracted (FIG. 9)
In the state (A), the bar 154 retracts the bar 154 below the wire pair WP stretched between the clamp stations 20 and 100, and at the time of extension (the state shown in FIG. 9B). ), Each wire pair W stretched
It is in contact with the lower surface of P, and it is possible to regulate the movement of the wire pair WP at the start of rotation (the behavior of the wire pair WP as shown by the phantom line in FIG. 9B).

Referring to FIG. 1, a control unit 102 is provided in the twist clamp station 100, and each unit operates as follows by a microprocessor and other electric components mounted on the control unit 102. I do.

Next, the operation of the above embodiment will be described.

In the above configuration, the wire pair WP is clamped on each toggle clamp 120 of the twist clamp station 100. Next, the wire pair WP sandwiched between the predetermined toggle clamps 120 is bundled and clamped to each clamp unit 22 of the corresponding fixed clamp station 20.
At this time, the wire pair WP from each toggle clamp 120
Is the corresponding partition pin 3 as shown in FIG.
It is distributed between 2 and 32.

Next, referring to FIGS. 4 and 9, when the drive unit 101 of the twist clamp station 100 is operated in this state, first, the air cylinder 152 of the vibration control mechanism 150 extends the rod 152a.
The bar 154 is extended from the state shown in FIG. 9A to the state shown in FIG. 9B to make contact with each wire pair WP. After this contact, the drive unit 101 operates, and each twist clamp unit 1
By rotating the ten rotation shafts 111, the twist operation of the wire pair WP clamped by the toggle clamp 120 is performed. At the beginning of this twist operation, FIG.
As shown in (B), since the bar 154 is in contact with a portion near the other end of each wire pair WP, the deflection of each wire pair WP is regulated, and the wire pair WP is not entangled with adjacent wire pairs WP. Will be twisted. When the twisting operation is completed, the bar 154 returns from the state shown in FIG. 9B to the state shown in FIG. 9A, and the driving unit 101 makes the twist clamp units 110
Is stopped in the expected posture. As a result, as shown in FIG. 7A, the toggle clamp 120 of each twist clamp unit 110 stops with its operation handle 123 upright.

When the twist clamp unit 110 stops, the vertical cylinder 141 and the horizontal cylinder 142 of the clamp release mechanism 140 operate according to the above-described procedure.
7A, the release bar 143 is displaced to the position indicated by 〜 and then returned to the home position as shown in FIG. 7B, so that the release bar 143 is clamped by the toggle clamp 120 of each twist clamp unit 110. Release the state all at once. At the same time, by operating the air cylinder 26 of the fixed clamp station 20, the front ends of the wire pairs WP can be simultaneously released. As a result, the wire pair WP that has now become a twisted wire is released at the same time, falls onto the receiving bar 148 shown in FIG. 4, and is received.

As described above, in the above-described embodiment, the operation bars 123 of the plurality of toggle clamps 120 are simultaneously driven by the release bar 143 of the clamp release mechanism 140 to automatically perform the clamp release operation. As a result, the release operation is dramatically improved.

Further, in the present embodiment, the front ends of the plurality of wire pairs WP are clamped by the common clamp unit 22, so that one fixed clamp (clamp unit 22) can be used for the plurality of toggle clamps 120. Since the clamped wire pair WP can be twisted, the operation of attaching each wire pair WP and the operation of removing the twisted wire after the twisting are greatly simplified.

Further, by configuring the pair of clamps 25a and 25b of the clamp unit 22 as described above, a reliable holding force can be obtained even when the wire pairs WP are bundled and clamped.

As described in detail with reference to FIG. 7, since the clamp releasing mechanism 140 returns to the retracted position by an operation of releasing the clamp of the operation handle 123, the release bar 143 is operated by a relatively simple operation. (Return to the retracted position) can be performed.

In addition, according to the present embodiment, when a plurality of wire pairs WP are simultaneously twist-driven, the vibration restricting mechanism 15
As a result of 0 restricting blurring in the vicinity of the other end of the wire pair WP, tangling of the wire pair WP due to this blurring does not occur.

Also, a partition pin 32 as a partition member
This also makes it possible to prevent the wire pair WP bundled in the fixed clamp from being entangled.

Further, in the present embodiment, the vibration regulating bar 154 abuts against each wire pair WP prior to the rotation operation of the twist clamp unit 110, so that the deflection of the wire pair WP occurring at the start of the rotation operation is reliably prevented. be able to. On the other hand, since the vibration restricting bar 154 retracts to the retreat position before the rotation operation ends, the vibration restricting bar 154 hinders the operation of removing the wire pair WP (that is, the twisted wire) after the twist processing. There is no.

The above embodiment is merely an example of a preferred specific example of the present invention, and the present invention is not limited to the above embodiment. It goes without saying that various design changes are possible within the scope of the claims of the present invention.

[0057]

As described above, according to the present invention,
When twisting a plurality of wire pairs at the same time, the vibration regulating means regulates the movement of the wire pair and can prevent the wire pairs from being entangled due to the displacement, so that the entire device can be compactly assembled. As a result, the manufacturing cost is increased and the range in which the operator moves is reduced, so that the workability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a twist processing apparatus according to an embodiment of the present invention.

FIGS. 2A and 2B are perspective views of a clamp portion at one end of the twisted wire shown in FIG. 1, wherein FIG. 2A shows a clamp released state, and FIG.

3A and 3B are schematic cross-sectional views of FIG. 2, wherein FIG. 3A shows a clamp release state, and FIG. 3B shows a clamp state.

FIG. 4 is a perspective view showing a schematic configuration of a twist clamp station according to the embodiment of FIG.

5A and 5B are perspective views of a twist clamp unit according to the twist clamp station shown in FIG. 4, wherein FIG. 5A shows a clamp released state, and FIG. 5B shows a clamp state.

FIG. 6 is a perspective view showing a main part of the clamp release mechanism according to the embodiment of FIG. 1;

FIG. 7 is a schematic side view showing the operation of the clamp release mechanism of FIG. 6;

FIG. 8 is an enlarged perspective view of a main part showing a schematic configuration of a vibration regulating mechanism according to the embodiment of FIG. 1;

FIGS. 9A and 9B are schematic side views showing the operation of the vibration regulating mechanism according to the embodiment of FIG. 1, wherein FIG. 9A shows a retracted state and FIG. 9B shows a vibration regulated state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Twist processing apparatus 20 Fixed clamp station 22 Clamp unit 25a Fixed clamp piece 25b Movable clamp piece 30 Prevention tool 32 Pin (partition member) 100 Twist clamp station 101 Drive unit (rotation drive mechanism) 102 Control unit 110 Twist clamp unit 120 Toggle clamp (Twist clamp) 123 Operation handle 150 Vibration regulation mechanism (Vibration regulation means) 154 Vibration regulation bar (Vibration regulation member) WP Wire pair

Claims (2)

[Claims] 1. A fixed clamp for fixing one end of a wire pair consisting of a pair of wires, a plurality of twist clamps for individually clamping the other end of the wire pair so as to be capable of being individually twisted, and turning the twist clamp simultaneously. A rotating drive mechanism for moving the plurality of wire pairs into a twisted wire at the same time, wherein each wire is arranged near the other end of the wire pair and each wire is started when the rotation drive mechanism starts rotating the twist clamp. An electric wire twisting apparatus comprising a vibration restricting means for restricting a deflection of a pair. 2. The electric wire twisting apparatus according to claim 1, wherein the vibration restricting means comprises: a contact member capable of contacting each wire pair; and a contact member contacting each wire pair. A clamp release member that is displaced between a contact position and a retracted position that retreats from each wire pair; and the contact member is displaced to the contact position, and the contact is made until the rotation operation of the twist clamp ends. A controller for controlling the clamp release member so that the member is retracted to the retracted position.