JP2001035283A - Twist wire manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance productivity of a long twist wire, and also to flexibly respond to the requirement of multi-product production kind. SOLUTION: A twisting unit 2 to synchronously rotate two pairs of first wire clamps in the same direction by a motor 7 is provided on the one end side of a work table. A moving unit 5, including a slide table 14, is provided on the other end side of the work table 1, and a turn jig 17 is provided on the slide table 14 energized to the right in the figure by a spring 15. The intermediate part of a wire to be twisted is hung on the turn jig 17 to be made into a U-turn form, and the two pairs of the clamps are rotated with both ends of the wire held by the first wire clamp, so as to twist the wire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twisted wire manufacturing apparatus having improved efficiency in manufacturing long twisted wires.

[0002]

2. Description of the Related Art As shown in FIG. 11, a twisted electric wire is obtained by twisting several electric wires A having terminals T attached to both ends. The production of the twisted electric wire is described in
Japanese Patent Application Laid-Open No. 28927/28 discloses a basic manufacturing method, and Japanese Patent Application Laid-Open No. H10-340644 discloses a manufacturing apparatus which consistently performs steps from cutting a wire to attaching terminals and twisting thereafter. It is shown.

[0003]

In the conventional twisted wire manufacturing apparatus disclosed in the above-mentioned publications and the like, several wires twisted with each other are linearly aligned, and both ends of the wires are held by wire clamps, respectively. In this state, the wire clamp on one side is rotated and the drawn wires are twisted, so that the twisting time becomes longer in proportion to the length of the twisted wire to be manufactured. In the production of electric wires, productivity decreases.

Further, as the length of the twisted electric wire to be manufactured becomes longer, the distance between the electric wire clamps for fixing both ends becomes longer,
This leads to an increase in the size of the device and an increase in the installation space, and also increases the walking distance of the worker when setting both terminals to the wire clamps, thereby deteriorating the workability and further lowering the productivity.

Further, since the twist is applied to both ends of the electric wire, there is also a disadvantage that the operator must manually return the twist of the terminal portion and insert the terminal of the terminal into the connector.

In addition, the apparatus disclosed in Japanese Patent Application Laid-Open No. H10-360644 has a complicated structure and is expensive since the steps from cutting to twisting of the electric wire are performed consistently.

In addition, the integrated manufacturing apparatus has a small degree of freedom in changing the type of twisted electric wire to be manufactured, and when manufacturing various types of electric wires, it is easy to cause an increase in equipment, an increase in space, and a complicated setup.

Accordingly, an object of the present invention is to provide an apparatus which can improve the production efficiency of a long twisted electric wire and an apparatus which can produce a short wire in addition to the production efficiency of a long wire. .

[0009]

In order to solve the above-mentioned problems, in the present invention, a twisted wire manufacturing apparatus is configured as follows. That is, a first motor having two sets of first electric wire clamps and a driving motor arranged in parallel at one end of the worktable.
A twist unit comprising a rotation drive mechanism of an electric wire clamp is provided, and a movable unit capable of position control to advance and retreat in a longitudinal direction of the electric wire is provided at the other end of the worktable,
The moving unit includes a slide table to which resilient force is applied toward the other end of the work table, a turn jig in the middle of an electric wire is provided on the slide table, and terminals are attached to both ends (n ≧ n). 2) One end and the other end of each of the wires are respectively held by the two sets of first wire clamps, and the two sets of first wire clamps are placed in the same direction with the U-turn part in the middle of the wires hooked on the turn jig. , So that the n electric wires are twisted.

In this apparatus, two long twisted electric wires can be manufactured at the same time by providing the above-mentioned twist units in upper and lower two stages.

[0011] Further, when a second electric wire clamp paired with the first electric wire clamp is provided on the slide table so as to face the first electric wire clamp, the use range of the apparatus is expanded.

In addition, a sensor for detecting the presence or absence of an electric wire is attached to the first electric wire clamp or the first and second electric wire clamps, and the electric wire clamp attached to the sensor holds the electric wire based on the electric wire detection signal from the sensor. In addition, the first and second wire clamps are unclamped based on the twisting completion signal. After the wires are twisted by rotation of the first wire clamp, the first wire clamp is reversed. A better effect can be expected from a device provided with a function of returning the twist of the twisted wire end or a function of moving the moving unit to the twist unit side to eliminate the tension generated in the twisted wire.

[0013]

When the middle portion of the n wires is hung on a turn jig to make a U-turn, and both ends are held by two sets of first wire clamps and rotated in the same direction, twisting is performed from both sides. Therefore, the required number of rotations of the first wire clamp is reduced by half as compared with the conventional device, and the twisting time is shortened, and the production efficiency is increased.

Since the two sets of first wire clamps are on the same side, both ends of the wire can be set at the same location. In addition, the distance from the first wire clamp to the turn jig is also about half of the distance between the wire clamps of the conventional device, so that the walking of the worker when setting the wire is reduced, and the workability is improved and the production efficiency is improved. Is even higher.

Further, since the electric wire is set by making a U-turn, the total length of the device is also reduced to about 1/2 that of the conventional device, and the device becomes compact.

In the case where two long twisted electric wires are manufactured at the same time, the productivity is approximately doubled as compared with the case where one long twisted electric wire is manufactured one by one.

Further, when the second wire clamp is provided on the moving unit side, a short twisted wire can be manufactured by the same method as that of the conventional device, and the range of use can be expanded.

[0018] Further, a wire clamped by an electric wire clamp based on a wire detection signal from an attached sensor or an unclamped wire clamped based on a twisting end signal is used when the wire is set. And workability at the time of removal improves.

In addition, when the twisted wire ends are untwisted after the twisting, the manual untwisting performed when inserting the terminal of the terminal into the connector becomes unnecessary.

[0020] Further, a device that moves the moving unit to release the tension generated in the twisted electric wire does not cause a runaway of the electric wire at the time of unclamping (a phenomenon in which the electric wire suddenly shrinks and jumps), and provides stability and safety. Also excellent in nature.

[0021]

1 to 10 show an embodiment of a twisted wire manufacturing apparatus according to the present invention.

Reference numeral 1 in FIGS. 1 and 2 denotes a work table. This work table 1 is provided with an inclined stay 1b and a mounting plate 1c on a body frame 1a of which height can be adjusted, and a square gutter 1 for dropping a completed twisted electric wire under the inclined stay 1b.
d. A decorative plate 1f having a long hole 1e is attached to the surface of the inclined stay 1b.

At the left end of the work table 1, two sets of twist units 2, 2 are arranged vertically in two stages, and a touch panel 3 and an emergency stop button 4 are further provided. Work table 1
A moving unit 5 is provided on the right end side of.

As shown in FIGS. 4 and 5, each twist unit 2 has two sets of first wire clamps 6, 6 arranged in parallel.
And a motor 7 with a brake for rotating the clamp
have. The motor 7 is mounted on a mounting plate 1c. Rotating shafts 8 are provided on the left and right sides of the output shaft of the motor 7, and the first electric wire clamp 6 is mounted on the rotating shaft 8 supported by the mounting plate 1c. The two rotating shafts 8 are connected to the output shaft of the motor 7 by a power transmission element 9 composed of a pulley and a timing belt. Therefore, when the motor 7 is driven, two pairs of first electric wire clamps 6 are formed. , 6 are synchronized and rotate in the same direction. 1a is a safety cover.

As shown in FIG. 6, the first electric wire clamp 6 drives the chuck 6a by an air cylinder 6b. The air supply to the air cylinder 6b is shown in FIG.
And a hole provided at the center of the rotary shaft 8. The chuck 6a can hold n terminals. n is the number of electric wires to be twisted, and n = 2 in the illustrated device. As shown in FIG. 7, the chuck 6a is provided with a photo sensor 10 for detecting whether or not the terminal T attached to the terminal of the electric wire A is set on the gripping portion. Is detected, the automatic clamping by the chuck 6a is performed.

A rotation detector 11 shown in FIG. 4 is provided on one rotation shaft 8 of each twist unit 2. The detector 11 comprises a rotating plate 11 having a slit attached to the rotating shaft 8.
a and a photosensor 11b that detects passage of the slit. The signal from the rotation detector 11 is input to the control unit to control the rotation speed of the first wire clamp 6. Also,
The motor 7 is stopped by a signal when the number of rotations reaches the set number, and the first wire clamp 6 is returned to the origin position (the position in FIG. 2).

The number of rotations of the first wire clamp 6 (that is, the number of twists and untwisting applied to the wire) is set according to the wire size and the length of the wire to be twisted. About ten types of twisted wire specifications can be registered in advance in the control unit of the device by operating the touch panel 3, and the number of rotations is set according to each specification.

As shown in FIGS. 3 and 8, the moving unit 5 includes a slider 12, an actuator 13 for moving the slider 12 in the longitudinal direction of the electric wire, and a slide table mounted on the slider 12 so as to be slidable in the longitudinal direction of the electric wire. And a spring 15 for urging the table 14 toward the right end of the worktable 1. The actuator 13 is installed on the back side of the decorative plate 1f. This actuator 13 is, as shown in FIG.
An endless belt 13b is stretched between 3a and the belt 13b is driven by driving a belt wheel by the servo motor 13c in FIG. 1, so that a large working stroke can be obtained. The slider 12 is connected to the belt 13b of the actuator 13, and the belt 13b is moved rightward or leftward to move the slider 12 along the guide rail 16 (see FIG. 1). The guide rail 16 is provided along the long hole 1e of the decorative plate 1f.

A turn jig 17 shown in FIGS. 1, 3 and 8 is erected on the slide table 14, and a second electric wire clamp 1 is provided near the left end of the slide table 14.
8 are provided.

As shown in FIG. 8, the turn jig 17 is provided with a wire stock plate 17b below the pole 17a and a flange 17c for preventing the wire from coming off above the pole 17a.

As the second electric wire clamp 18, a pair of two electric wires to be twisted is set in the chuck 18a, and the chuck 18a is driven by a built-in air cylinder to clamp all the electric wires collectively. . The electric wire clamped by the second electric wire clamp 18 is provided with a switch operated by an operator, and is performed by a signal from the switch. If necessary, similarly to the first electric wire clamp 6, a sensor for detecting the presence or absence of the electric wire is provided. Can be attached so that automatic clamping is performed by a signal therefrom.

Next, the operation of the exemplified twisted wire manufacturing apparatus will be described.

First, the touch panel 3 is operated to select a twisting mode. The twist mode is divided into two types, a straight twist and a U-turn twist. The straight twist is used, for example, for manufacturing an electric wire having a length of 1 m or less, and the U-turn twist is used for manufacturing an electric wire having a length of 1 m or more.

Here, it is assumed that the U-turn twist mode is selected. After selecting the mode, when the wire size and the wire length are input to the touch panel 3, the number of rotations required for twisting and the origin position of the moving unit 5 are automatically set. Thereafter, a trial run is performed by inputting the number of production lots, and if the length of the completed twisted wire is out of the specified value, a length correction value is input to correct the set rotation speed.

After confirming that the specified twisted electric wire is manufactured, the operation is started. In this operation,
As shown in FIG. 9, one end of the electric wire A is set on the first electric wire clamp 6 on one side, and then the electric wire A is put on the pole 17a of the turn jig located at the origin position to make a U-turn at an intermediate portion. Is set on the other first wire clamp 6.

When the start button (not shown) is pressed after the completion of the setting, the motor 7 is started to rotate the first wire clamp 6, and the set n wires A are twisted. At this time, since the length of the wire A is reduced due to the twist and tension is applied, the slide table 14 is provided to protect the wire from the tension. That is, when the tension of the electric wire exceeds a certain value, the slide table 14
Is stretched to move to the twist unit 2 side, whereby excessive tension is absorbed.

When the number of revolutions of the first wire clamp 6 reaches the set value, the motor 7 temporarily stops, and then slightly reverses (this reverse number is also preset). By the reversal, the twist at the end of the wire is appropriately returned, and the untwisting by hand becomes unnecessary.

When the untwisting is completed, a twisting end signal flows and the clamp by the first wire clamp 6 is released. At this time, the spring 15 is in a stretched state. The recoil causes the wires to go wild (bounce). In order to prevent such a rampage phenomenon, the moving unit 5 is moved toward the twist unit 2 to eliminate the tension of the electric wire, and thereafter, an unclamping command is sent to the first electric wire clamp 6.

When the first electric wire clamp 6 becomes unclamped, the electric wire A comes off the clamp 6 by its own weight and falls into the square gutter 1d. However, the middle U-turn portion remains hung on the pole 17a of the turn jig and is stocked on the stock plate 17b. Thereafter, the twist unit 2 and the moving unit 5 return to the origin, and thereafter, the same operation is repeated until the set lot number is reached.

It should be noted that the completed twisted electric wires are collectively taken out after an appropriate amount is accumulated.

At this time, a unit may be provided for separating the electric wire in the part falling into the corner gutter 1d.
FIG. 10 shows an example of the judgment unit 19. In this judgment unit 19, the standing judgment pin 19a is inserted inside the U-turn portion of the electric wire, and the rodless cylinder 19b is inserted.
The electric wire is sorted by moving the sorting pin 19a back and forth.

When manufacturing a short twisted electric wire, the straight twist mode is selected. In this straight twist mode, four twisted wires can be manufactured simultaneously.
In this case, one end of each of the two electric wires is set to the four first electric wire clamps 6, and the other end of the linearly aligned electric wires is set to the second electric wire clamp 18, and in this state, the first electric wire is clamped. The wire clamp 6 is rotated and twisted in the same manner as in the conventional device. When the twisting is completed, the first and second wire clamps 6 and 18 are unclamped by the end signal, and the twisted wires are automatically removed and fall into the corner gutter 1d. Further, the clamping by the first electric wire clamp 6 is automatically performed based on the signal from the sensor 10, so that the workability is improved more than before even when operating in the straight twist mode.

[0043]

As described above, in the twisted wire manufacturing apparatus of the present invention, the intermediate part of the wire to be twisted is hooked on the turn jig to make a U-turn, and both ends of the wire are connected to the first set of two sets.
Since it is gripped by the wire clamp and twisted simultaneously from both ends, the twisting time is shortened and the production efficiency is increased.

Further, the length of the apparatus is about 1 / about that of the conventional apparatus.
2, the device becomes compact, the walking of the worker is reduced, the workability is improved, and the productivity is further increased.

It should be noted that the electric wire is automatically clamped based on a signal from a sensor for confirming the presence or absence of the electric wire, or the electric wire is detached when the twisting completion signal releases the holding by the clamp. As for the thing, manual work is reduced and productivity is further increased.

Further, the one in which the mobile unit is provided with the second electric wire clamp to produce the short twisted electric wire can flexibly cope with the demand of small lot and multi-product production.
There is no need for unnecessary capital investment.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the apparatus of the present invention.

FIG. 2 is a right side view of the above device.

FIG. 3 is a view of an essential part of the apparatus, as viewed in a direction indicated by an arrow III in FIG. 2;

FIG. 4 is a view of the twist unit as viewed in a direction indicated by an arrow IV in FIG. 2;

FIG. 5 is a sectional view of the twist unit taken along the line VV in FIG. 1;

FIG. 6 is a perspective view showing an outline of a first electric wire clamp.

FIG. 7 is a diagram showing a photosensor mounting portion of the first electric wire clamp.

FIG. 8 is a perspective view showing an outline of a moving unit.

FIG. 9 is a principle diagram of a U-turn twist

FIG. 10 is a front view showing a line sorting unit.

FIG. 11 shows an example of a twisted electric wire.

[Explanation of symbols]

 Reference Signs List 1 work table 1c mounting plate 1d square gutter 1e long hole 2 twist unit 3 touch panel 5 moving unit 6 first electric wire clamp 7 motor 8 rotating shaft 10 photosensor 11 rotation detector 12 slider 13 actuator 14 slide table 15 spring 17 turn jig 18 Second wire clamp A A wire T terminal

Claims (4)

[Claims] 1. A twist unit comprising two sets of first electric wire clamps arranged in parallel and a rotation driving mechanism of a first electric wire clamp having a driving motor is provided at one end side of a work table. A movable unit capable of position control for moving the wire forward and backward in the longitudinal direction is provided on the end side, and further, the movable unit includes a slide table that applies a resilient force toward the other end side of the worktable. A turn jig in the middle of the wire is provided on the table, and terminals are attached to both ends.
One end and the other end of the (n ≧ 2) wires are respectively held by the two sets of first wire clamps, and the two sets of first wire clamps are held in a state where the U-turn part in the middle of the wires is hung on the turn jig. Are twisted in the same direction so that n wires are twisted. 2. The twisted wire manufacturing apparatus according to claim 1, wherein the twist unit is provided in two stages, upper and lower. 3. The twisted wire manufacturing apparatus according to claim 1, wherein a second wire clamp paired with the first wire clamp is provided on the slide table so as to face the first wire clamp. 4. A sensor for detecting the presence or absence of an electric wire is attached to the first electric wire clamp or the first and second electric wire clamps, and the holding of the electric wire by the electric wire clamp attached to the sensor is performed based on an electric wire detection signal from the sensor. The twisted wire manufacturing apparatus according to claim 3, wherein the unclamping of the first and second wire clamps is performed based on a twisting end signal.