JP3680647B2 - Twisted wire manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a twisted wire manufacturing apparatus with improved manufacturing efficiency of long twisted wires.
[0002]
[Prior art]
As shown in FIG. 11, the twisted electric wire is obtained by twisting several electric wires A having terminals T attached to both ends. Regarding the production of the twisted electric wire, a basic production method is shown in Japanese Patent Publication No. 59-28927, and in Japanese Patent Application Laid-Open No. 10-340644, the terminal is cut from the scale cutting of the electric wire, and thereafter A manufacturing apparatus that consistently performs the twisting process is shown.
[0003]
[Problems to be solved by the invention]
In the conventional twisted wire manufacturing device shown in the above publications, several wires that are twisted together are linearly aligned and both ends of the wire are held by the wire clamps, and in this state, the wire clamp on one side is rotated. The twisted wires are twisted together, so there is a problem that the twisting time becomes longer in proportion to the length of the twisted wire to be manufactured, and the productivity decreases in the manufacture of long twisted wires. .
[0004]
In addition, as the length of the twisted electric wire to be manufactured increases, the distance between the electric wire clamps that fix both ends also increases, which increases the size of the device and increases the installation space, and when both ends are set in the electric wire clamp. The worker's walking distance also increases, the workability deteriorates and the productivity further deteriorates.
[0005]
Further, since both ends of the electric wire are twisted, there is a problem that the operator must manually return the terminal portion to insert the terminal of the terminal into the connector.
[0006]
In addition, since the apparatus disclosed in Japanese Patent Laid-Open No. 10-360644 consistently performs from the cutting of the electric wire to the twisting, the structure is complicated and expensive.
[0007]
In addition, the integrated manufacturing apparatus has a small degree of freedom in changing the types of twisted wires to be manufactured, and when manufacturing various types of wires, it tends to cause an increase in equipment, space, and complicated setup.
[0008]
Accordingly, an object of the present invention is to provide a device that can improve the production efficiency of a long twisted electric wire and a device that can manufacture a short wire in addition to the improvement of the production efficiency of a long wire.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, the twisted wire manufacturing apparatus is configured as follows. That is, a twist unit comprising two sets of first electric wire clamps arranged in parallel and a rotation driving mechanism of the first electric wire clamp having a driving motor is provided on one end side of the work table, and the other end side of the work table is provided on the other end side of the work table. A moving unit capable of position control for advancing and retreating in the longitudinal direction of the electric wire is provided, and the moving unit further includes a slide table to which a resilient force is applied toward the other end of the work table, and is placed on the slide table A turn jig in the middle of the electric wire is provided, and one end and the other end of n (n ≧ 2) electric wires with terminals attached to both ends are held by the two sets of first electric wire clamps, and the U-turn portion in the middle of the electric wire is Two sets of first electric wire clamps are synchronously rotated in the same direction while being put on the turn jig so that n wires are twisted together.
[0010]
In this apparatus, the twist unit is provided in two upper and lower stages, and two long twisted electric wires can be manufactured simultaneously.
[0011]
Moreover, if the 2nd electric wire clamp used as a pair with a 1st electric wire clamp is provided on the said slide table facing a 1st electric wire clamp, the utilization range of an apparatus will spread.
[0012]
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 is held by the electric wire clamp attached to the sensor based on the electric wire detection signal from the sensor, Further, the first and second electric wire clamps are unclamped based on the twisting end signal, and after the electric wire is twisted by the rotation of the first electric wire clamp, the first electric wire clamp is reversed and the twisted electric wire ends. A better effect can be expected with the function of returning the twist of the wire and the function of moving the moving unit to the twist unit side to eliminate the tension generated in the electric wire after twisting.
[0013]
[Action]
If the middle part of n wires is put on a turn jig and the wire is U-turned, and both ends are held by two sets of first wire clamps and rotated in the same direction, the twisting is done from both sides. The required number of rotations of the wire clamp is halved compared to the conventional device, the twisting time is shortened, and the production efficiency is increased.
[0014]
Moreover, since two sets of 1st electric wire clamps exist in the same side, the both ends of an electric wire can be set in the same location. In addition to this, the distance from the first wire clamp to the turn jig is about half of the distance between the wire clamps of the conventional device, so that the worker's walking when setting the wires is reduced, the workability is improved and the production efficiency is improved. Is further increased.
[0015]
Furthermore, since the electric wire is U-turned and set, the overall length of the device is shortened to about ½ that of the conventional device, and the device becomes compact.
[0016]
In addition, the productivity of manufacturing two long twisted wires at the same time is about twice as high as that of manufacturing one by one.
[0017]
Moreover, what provided the 2nd electric wire clamp in the movement unit side can also manufacture a short twist electric wire by the method similar to a conventional apparatus, and a utilization range expands.
[0018]
Furthermore, when the wire clamp is performed based on the wire detection signal from the attached sensor, or when the unclamp is performed based on the twisting completion signal, when the wire is set or removed Improved workability.
[0019]
In addition, if the twisted wire ends are untwisted after twisting, manual untwisting that is performed when the terminal of the terminal is inserted into the connector becomes unnecessary.
[0020]
In addition, moving the mobile unit to release the tension generated in the wire after twisting does not cause violence of the wire at the time of unclamping (a phenomenon in which the wire suddenly shrinks and jumps off), and stability and safety are also improved. Excellent.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
1 to 10 show an embodiment of a twisted wire manufacturing apparatus according to the present invention.
[0022]
1 in FIG. 1 and FIG. 2 is a work table. The work table 1 is provided with an inclined stay 1b and a mounting plate 1c on a body frame 1a capable of height adjustment, and further provided with a square rod 1d into which a completed twisted electric wire is dropped at the lower part of the inclined stay 1b. A decorative plate 1f having a long hole 1e is attached to the surface of the inclined stay 1b.
[0023]
Two sets of twist units 2 and 2 are arranged in two stages on the left end of the work table 1, and a touch panel 3 and an emergency stop button 4 are further provided. A moving unit 5 is provided on the right end side of the work table 1.
[0024]
As shown in FIGS. 4 and 5, each twist unit 2 has two sets of first electric wire clamps 6 and 6 arranged in parallel, and a motor 7 with a brake for rotating the clamps. The motor 7 is attached to the attachment plate 1c. The rotation 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 attached to the rotation shaft 8 supported by the attachment plate 1c. The two rotary shafts 8 are connected to the output shaft of the motor 7 by a power transmission element 9 composed of a belt wheel and a timing belt. For this reason, two sets of first electric wire clamps 6 that make a pair when the motor 7 is driven. , 6 rotate in the same direction in synchronism. Reference numeral 2a in FIG. 1 denotes a safety cover.
[0025]
As shown in FIG. 6, the first electric wire clamp 6 drives the chuck 6a with an air cylinder 6b. Air is supplied to the air cylinder 6b through a hole provided in the center of the rotary joint 6c and the rotary shaft 8 shown in FIG. The chuck 6a can hold n terminals. n is the number of wires to be twisted, and in the illustrated apparatus, n = 2. As shown in FIG. 7, the chuck 6 a is attached with a photosensor 10 that detects whether or not the terminal T attached to the terminal of the electric wire A is set in the gripping portion. When it is detected that the terminal is set, automatic clamping is performed by the chuck 6a.
[0026]
A rotation detector 11 shown in FIG. 4 is provided on one rotating shaft 8 of each twist unit 2. The detector 11 includes a slit-containing rotating plate 11a attached to the rotating shaft 8, and a photo sensor 11b that detects passage of the slit. A signal from the rotation detector 11 is input to the control unit to control the rotation speed of the first electric wire clamp 6. Further, the motor 7 is stopped by a signal when the rotation speed reaches the set number, and the first electric wire clamp 6 is returned to the origin position (position in FIG. 2).
[0027]
The number of rotations of the first wire clamp 6 (that is, the number of twists applied to the wire and the number of untwistes) is set according to the length of the wire to be twisted with the wire size. About 10 types of twisted wire specifications can be registered in advance in the control unit of the apparatus by operating the touch panel 3, and the number of rotations corresponding to each specification is set.
[0028]
As shown in FIGS. 3 and 8, the moving unit 5 includes a slider 12, an actuator 13 for moving the slider 12 back and forth in the longitudinal direction of the electric wire, a slide table 14 that is slidably mounted on the slider 12 in the longitudinal direction of the electric wire, The table 14 includes a spring 15 that biases the table 14 toward the right end side of the work table 1. The actuator 13 is installed on the back side of the decorative board 1f. As shown in FIG. 3, this actuator 13 uses an endless belt 13b that is bridged between a pair of belt wheels 13a, and the belt 13b is driven by driving the belt wheel by a servo motor 13c in FIG. A large operating stroke is obtained. The slider 12 is connected to the belt 13b of the actuator 13, and the belt 13b travels 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 board 1f.
[0029]
A turn jig 17 shown in FIGS. 1, 3, and 8 is provided on the slide table 14, and a second electric wire clamp 18 is provided near the left end of the slide table 14.
[0030]
As shown in FIG. 8, the turn jig 17 is configured by providing a wire stock pan 17b on the lower side of the pole 17a and a flange 17c for preventing the wire from coming off on the upper side.
[0031]
As the second electric wire clamp 18, a pair of electric wires to be twisted in pairs was set on the chuck 18a, and the chuck 18a was driven with a built-in air cylinder to clamp all the electric wires together. The electric wire clamp 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. Can be attached so that automatic clamping can be performed by a signal from there.
[0032]
Next, the operation of the exemplary twisted wire manufacturing apparatus will be described.
[0033]
First, the twist mode is selected by operating the touch panel 3. The twist mode is divided into two types, a straight twist and a U-turn twist. For example, the straight twist is used 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.
[0034]
Here, it is assumed that the U-turn twist mode is selected. When the line size and the wire length are input to the touch panel 3 after this mode is selected, the number of rotations necessary for twisting and the origin position of the moving unit 5 are automatically set. Thereafter, the number of production lots is input to perform a trial run. If the length of the finished twisted wire is not within the specified value, a correction value for the length is input to correct the set rotational speed.
[0035]
When it is confirmed that the twisted wire as specified is manufactured in this way, the main operation is started. In this actual 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 at the origin position and the U portion is placed in the middle portion. Turn the other end and set the other end to the other first electric wire clamp 6.
[0036]
When the start button (not shown) is pressed after the setting is completed, the motor 7 is started, the first electric wire clamp 6 is rotated, and the set n electric wires A are twisted together. At this time, since the length of the electric wire A is reduced due to twisting and tension is applied, the slide table 14 is provided to protect the electric wire from the tension. That is, when the tension of the electric wire exceeds a certain value, the slide table 14 extends the spring 15 and moves to the twist unit 2 side, thereby absorbing the excessive tension.
[0037]
When the number of rotations of the first electric wire clamp 6 reaches a set value, the motor 7 temporarily stops and then reverses slightly (the number of reverse rotations is also set in advance). By the reverse rotation, the twist of the electric wire end is appropriately returned, and the manual untwisting becomes unnecessary.
[0038]
When the untwisting is completed, a twisting end signal flows and the first electric wire clamp 6 is unclamped. At this time, the spring 15 is in a stretched state. Is rampant. In order to prevent the violent phenomenon, the moving unit 5 is moved to the twist unit 2 side so that the tension of the electric wire disappears, and then an unclamping command is sent to the first electric wire clamp 6.
[0039]
When the 1st electric wire clamp 6 becomes an unclamp, the electric wire A will remove | deviate from the clamp 6 with dead weight, and will fall into the square hook 1d. However, the intermediate U-turn portion is left on the pole 17a of the turn jig and is stocked on the stock pan 17b. Thereafter, the twist unit 2 and the moving unit 5 return to the origin, and thereafter the same operation is repeated until the number of set lots is reached.
[0040]
The completed twisted electric wires are collected in a lump after an appropriate amount has accumulated.
[0041]
At this time, a separation unit may be provided that separates the portion of the electric wire that has fallen into the square rod 1d. FIG. 10 shows an example of the judgment unit 19. This judgment unit 19 puts the standing judgment pin 19a inside the U-turn part of the electric wire, and advances and retracts the judgment pin 19a with the rodless cylinder 19b to judge the electric wire.
[0042]
In addition, when manufacturing a short twist 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 two electric wires is set on the four first electric wire clamps 6, and the other end of the electric wires linearly arranged on the second electric wire clamp 18 is set. The wire clamp 6 is rotated and twisted by the same method as in the conventional apparatus. When the twisting is completed, the first and second electric wire clamps 6 and 18 are unclamped by an end signal, and the twisted electric wires are automatically detached and fall into the square rod 1d. Moreover, the clamp by the 1st electric wire clamp 6 is automatically performed based on the signal from the sensor 10, Therefore Workability | operativity improves more than before also at the time of the driving | operation in a straight twist mode.
[0043]
【The invention's effect】
As described above, in the twisted wire manufacturing apparatus of the present invention, the intermediate portion of the wire to be twisted is hung on a turn jig to make a U-turn, and both ends of the wire are gripped by two sets of first wire clamps from both ends. Since twisting is simultaneously applied, the twisting time is shortened and the production efficiency is increased.
[0044]
In addition, the length of the apparatus is about ½ that of the conventional apparatus, and the apparatus becomes compact, and the worker's walking is reduced, so that workability is improved and productivity is further increased.
[0045]
In addition, the one that the clamp of the electric wire is made automatically based on the signal from the sensor that confirms the presence or absence of the electric wire, or the one that the holding by the clamp is released by the twisting completion signal and the electric wire is released, Productivity is further increased with less manual work.
[0046]
In addition, the second electric wire clamp provided on the moving unit and the production of a short twisted electric wire can be flexibly responded to the demand for small lot and multi-product production, so that unnecessary capital investment is not required.
[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 apparatus. FIG. 3 is a view in the direction indicated by an arrow III in FIG. FIG. 5 is a cross-sectional view of the twist unit taken along line V-V in FIG. 2. FIG. 6 is a perspective view showing an outline 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 wire handling unit. FIG. 11 is an example of a twisted wire. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Worktable 1c Mounting plate 1d Square rod 1e Long hole 2 Twist unit 3 Touch panel 5 Moving unit 6 1st electric wire clamp 7 Motor 8 Rotating shaft 10 Photo sensor 11 Rotation detector 12 Slider 13 Actuator 14 Slide table 15 Spring 17 Turn jig 18 Second electric wire clamp A Electric wire T Terminal

Claims (4)

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 on one end side of the workbench, and an electric wire is connected to the other end side of the workbench. A moving unit capable of position control for advancing and retreating in the longitudinal direction is provided. Further, the moving unit includes a slide table to which a resilient force is applied toward the other end of the work table, and an electric wire is placed on the slide table. A turn jig is provided, and one end and the other end of n (n ≧ 2) wires with terminals attached to both ends are held by the two sets of first wire clamps, respectively, and the U-turn part in the middle of the wire is turned into the turn. A twisted wire manufacturing apparatus in which n sets of wires are twisted together by synchronously rotating two sets of first wire clamps in the same direction in a state of being hooked on a jig. The twisted wire manufacturing apparatus according to claim 1, wherein the twist units are provided in two upper and lower stages. The twisted electric wire manufacturing apparatus according to claim 1 or 2, wherein a second electric wire clamp that is paired with the first electric wire clamp is provided on the slide table so as to face the first electric wire clamp. 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 is held by the electric wire clamp attached to the sensor based on the electric wire detection signal from the sensor. The twisted electric wire manufacturing apparatus according to claim 3, wherein the first and second electric wire clamps are unclamped based on a twisting completion signal.

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