WO2014148607A1

WO2014148607A1 - Tape-wrapping method and tape-wrapping device for twisted pair

Info

Publication number: WO2014148607A1
Application number: PCT/JP2014/057774
Authority: WO
Inventors: 敏廣白上
Original assignee: 矢崎総業株式会社
Priority date: 2013-03-22
Filing date: 2014-03-20
Publication date: 2014-09-25
Also published as: JP6072581B2; CN105229754B; JP2014186834A; CN105229754A

Abstract

The purpose of the present invention is to reduce the amount of time it takes to wrap a tape around a twisted pair, increase the positional precision of tape wrapping, and prevent twisted pairs from untwisting during transport. During a process in which two electrical wires (3) are twisted together by a twisting machine (2), forming a twisted pair (3'), a tape-wrapping head (6) of a tape-wrapping device (1) is moved near one end of the two electrical wires (3) in place in the twisting machine (2), and said tape-wrapping head (6) starts or finishes wrapping a tape around the end of the twisted section while the two electrical wires (3) are being twisted together.

Description

Twist wire tape winding method and tape winding device

The present invention relates to a twisted wire tape winding method and a tape winding device for performing twist winding prevention tape winding on a twisted wire obtained by twisting two electric wires.

Conventionally, various methods and apparatuses have been proposed for winding a wire on a tape.

For example, Patent Document 1 (not shown) describes that a wire harness is laid on a wiring board, and tape winding is performed on the wire harness with a tape winding device in that state. The tape winding device has a circular rotating plate with a U-shaped guide recess into which the wire harness is inserted, an adhesive tape that is arranged on the rotating plate and positions the tip on the guide recess side, and the adhesive tape is cut after winding the tape. A cutter that rotates the rotating plate, and a head drive mechanism (single-axis robot) that advances and retracts the taping head including these cutters in a sliding manner.

In Patent Document 2 (not shown), clamps are arranged on the left and right sides of the base so that each motor can be driven to rotate. Both clamps grip the left and right ends of the wire, and the tape winding head is used as a base. It is described that it is arranged so as to be movable along the left and right guide rails and to be movable back and forth along the front and rear guide rails. Move the tape winding head along the left and right guide rails while rotating the left clamp with the left motor to twist the wire, or rotating the left and right clamps with the left and right motors to rotate the wire. Then, the wire is wound around the wire dynamically.

In addition, in order to twist two wires into a twisted wire, various devices and methods described below have been proposed. The twisted wire is an electric wire that can suppress generation of electromagnetic waves or absorb electromagnetic waves.

For example, in Patent Document 3, as one embodiment (not shown), one end of two electric wires is sent toward the other end side while being twisted by each twist-feeding mechanism, and the two electric wires are placed in the middle in the longitudinal direction. It is described that a twist portion is formed between the rotating body and the twist-feeding mechanism while moving the attached rotating body to the other end side of the electric wire.

Similarly, in Patent Document 3, as another embodiment (not shown), one end side of two electric wires is sent out toward the other end side while being twisted by each twist-out feeding mechanism, and the middle of the two electric wires in the longitudinal direction. It is described that a rotating body attached to a part is rotated in a twisting direction (without moving) to form a twisted part between the rotating body and the other end side of the electric wire.

Similarly, in Patent Document 3, as a conventional technique (not shown), one end of two electric wires is fixed to a rotating member, and the other end of two electric wires is fixed to a fixing member. It is described that a twist portion is formed between the fixing member and the rotating body by rotating.

Further, in Patent Document 4, as one embodiment (not shown), one end side of two electric wires is chucked and integrally rotated by one motor, and moved to a longitudinal intermediate portion of the two electric wires. Attach the member, grip the other end of the two wires with each chuck and rotate each motor in the same direction as the motor while moving the moving member toward the other end, It is described that a twisted portion is formed with the other motor.

Similarly, in Patent Document 4, as another embodiment (not shown), one end side of two electric wires is chucked and rotated integrally with one motor, and the other end side of the two electric wires is twisted out. It is described that the mechanism is rotated in the same direction as the motor and fed toward the integral side, and the motor is moved in the feeding direction to form a twisted portion between the twist feeding mechanism and the motor.

In Patent Document 5 (not shown), one end side of two electric wires is clamped and rotated integrally with a motor, and the other end side of the two electric wires is clamped and fixed. Insert the middle part in the longitudinal direction of the two wires into the notch opening of the rotor and separate it with a rod, move it toward the motor while rotating the rotor in the same direction as the motor, and clamp the other end And twisting two wires between the rotor and the rotor.

7 to 10 show one embodiment of a conventional twisted wire tape winding method and tape winding device.

As shown in FIG. 7, the tape winding device 41 is arranged separately from the twisting machine 2 of the twisted wire manufacturing apparatus, and the operator 9 twists the two wires 3 with the twisting machine 2 to form a twisted wire 3 ′. (FIG. 9) was conveyed to the adjacent tape winding device 41, and the tape winding 13 for preventing twist back was applied to the end of the twisted wire 3 ′. In FIG. 7,

reference numerals

4 and 5 are left and right clamps that grip the electric wire 3, and reference numeral 10 is a hook (horse) that supports a twisted wire bundle 33 formed of a plurality of twisted wires 3 ′ that have undergone tape winding or the like. Each is shown.

FIG. 8 shows the internal structure of the tape winding device 41. The tape winding device 41 rotates the tape holding drum 18, the tape cutter blade 19, the winding tape 15 that feeds out the tape 13, and the tape holding drum 18. A motor 17 and a plurality of gears 42 are provided, and a substantially box-shaped device main body 43 that accommodates them. The tape holding drum 18 has a notch recess 18a through which the two electric wires 3 are inserted. The tape 13 is a single-sided adhesive tape made of synthetic resin, and is fed from the wound tape 15 through the tape cutter blade 19 by the rotation of the tape holding drum 18. The tape winding device main body 43 is placed on a table 44 (FIG. 7) with legs (not shown).

FIG. 9 shows an embodiment of a twisted wire (also referred to as a twisted pair wire or a twisted wire) 3 ′, and tape winding 13 for preventing twist back is applied to both ends of the twisted wire 3 ′ by a tape winding device 41. Has been. Terminals 34 are connected in advance to both terminals of each electric wire 3. The twisted pair 3 ′ of the twisted wire 3 ′ is formed by twisting the two electric wires 3 in the same direction in a spiral shape.

FIG. 10 shows operations of the twisted wire manufacturing device (device including the twisting machine 2) and the tape winding device 41 in order. In the operation of the worker in FIG. 10, the step numbers shown in parentheses correspond to the operation numbers of the worker 9 in FIG.

First, worker 9 turns on the start switch of the twisted wire manufacturing apparatus in step (1). As a result, the twisted wire manufacturing apparatus measures the wires with a measuring / cutting machine (not shown) and cuts them to the required length in step 11, and both wires 3 (FIG. 9) with a peeling machine (not shown). The insulation coating of the

terminals

3a and 3b is removed, and the terminals 34 are crimped to both ends of the electric wire 3 with a crimping machine (not shown). These measuring / cutting machine, terminal crimping machine, twisting machine 2 and tape winding device 41 are referred to as a twisted wire manufacturing apparatus.

Next, the twisting machine 2 of the twisted wire manufacturing apparatus grips and fixes both

ends

3a, 3b of the two electric wires 3 with the clamps 4, 5 (FIG. 7) in step 12, and in step 13, the two wires 3 The electric wire 3 is twisted (twisted). Next, at step 14, the

clamps

4 and 5 on both

terminals

3a and 3b are opened, and the twisted wire 3 'is paid downward. Next, in step 15, members (for example,

clamps

4 and 5 and a rotor (not shown)) for twisting the electric wire 3 return to a fixed position.

The operations in steps 11 to 15 are repeated until n twist lines 3 'are paid out in step 16. For example, n is about 20 to 30. One (referred to as one for convenience of explanation; actually, one set) twisted wire 3 ′ is composed of two electric wires 3 with terminals.

After turning on the start switch of the twisted wire manufacturing apparatus in step (1), the operator 9 grasps the n twisted wire bundles produced previously in step (2), and twists the twisted wire bundles in step (3). The machine 2 is moved to the tape winding device 41 (the operator 9 moves to the tape winding device 41 with a twisted wire bundle). Next, in step (4), the center in the longitudinal direction of the twisted wire bundle is bundled together with a rubber band (not shown) to make a bundle. Next, in step (5), one terminal of the twisted wire bundle is picked up by hand, and in step (6), one terminal (3a ') of one (one set) of twisted wire bundles 3' (see FIG. 9) is set in the tape winding device 41.

In step 17, the tape winding device 41 performs the tape winding 13 on one end 3a ′ of the twisted portion of the single twisted wire 3 ′. After completion of the tape winding 13, the operator 9 takes out one end 3a 'wound with one twisted wire 3' from the tape winding device 41 in step (7). In step (8), the operator 9 repeats the operations of steps (5) to (7) for one end 3a 'of all twist lines 3' of the twisted line bundle, and then all twist lines 3 'of the twisted line bundle. The same operation (tape winding) is repeated for the other terminal 3b '.

When the operator 9 takes out the other terminal 3b ′ wound with the tape of the last twisted wire 3 ′ of the twisted wire bundle from the tape winding device 41 in step (7), the tape winding is completed in step (9). The twisted wire bundle 33 is hung on the hanging tool 10 in the vicinity of the tape winding device 41. In step (10), the worker 9 moves (returns) from the hanging tool 10 to the twist machine 2.

Japanese Patent Laid-Open No. 11-292017 (FIGS. 1 to 3) JP 2001-122525 A (FIGS. 1 and 2) JP 2007-227185 A (FIGS. 1, 2 and 4) Japanese Patent Laying-Open No. 2009-231157 (FIGS. 1 and 2) JP 2012-28197 A (FIG. 4)

However, in the twisted wire tape winding method and the tape winding device shown in FIGS. 7 to 10, the twisted wire 3 'twisted by the twisting machine 2 is carried to another tape winding device 41 to wind the tape. As described above, there is a problem in that the number of man-hours for winding the tape is required separately from the man-hours (time) for manufacturing the twisted wire 3 ', and a lot of man-hours are required for manufacturing the twisted wire 3'.

In addition, when the twisted wire 3 ′ formed by the twisting machine 2 is transported to the tape winding device 41, the twisted wire 3 ′ may be unwound (part of the twist may return). The operator 9 had to retwist by hand, and manpower for reworking was required. Further, in the tape winding device 41, the operator 9 has manually adjusted the tape winding position L (FIG. 9) of the left and right terminals 3a ′ and 3b ′ of the twisted wire 3 ′ by visual inspection or the like. The tape winding position L of the wire 3 ′ may vary, resulting in a decrease in appearance, and a decrease in workability when the terminal 34 of the twisted wire 3 ′ is inserted into a terminal housing chamber of a connector housing (not shown). There was no concern.

Moreover, since the tape winding device 41 occupies a large space in the vicinity of the twisting machine 2, there is a concern that the operation of the operator 9 may be hindered. Further, when the tape 13 of the tape winding device 41 is finished (lost) in the middle of winding on the twisted wire 3 ′, the incompletely wound tape 13 is removed from the twisted wire 3 ′, and the tape winding device 41 is turned on. There is a concern that a new winding tape 15 must be mounted and the tape winding must be performed again, which requires a lot of labor.

The present invention has been made in view of the above points, and aims to reduce the time required for winding a twisted wire tape, increase the accuracy of the tape winding position, and eliminate twisting of the twisted wire during transportation. In addition, an object of the present invention is to reduce the space occupied by the tape winding device in the twist machine and to change the tape of the tape winding device at an optimal timing.

In order to achieve the above object, a method of winding a twisted wire tape according to claim 1 of the present invention is set in the twisting machine in the process of twisting two wires with a twisting machine to form a twisted wire. Further, the tape winding head of the tape winding device is brought close to the ends of the two electric wires, and the tape winding head starts or completes at the ends of the twisted portions during the twisting operation of the two electric wires. It is characterized by doing.

With the above configuration, two electric wires are twisted in a twisting machine. For example, during the twisting operation, the tape winding head of the tape winding device is connected to the terminal (one terminal and / or other terminal) of the twisted portion of the two electric wires. Then, tape winding is started, and tape winding ends within the time of twisting of two electric wires or after completion of twisting. Alternatively, two wires are twisted with a twisting machine, and tape winding is performed with a tape winding head of a tape winding device at the end (one end and / or other end) of the pair of two wires during the twisting operation. The tape winding is completed within the time of twisting the two electric wires. In any case, the time required for winding the tape is reduced. Tape winding should just be performed in the form wrapped in time during the twisting operation.

The twisted wire tape winding method according to claim 2 is a twisted wire tape winding method according to claim 1, wherein the twisted wire tape winding method is 360 ° up and down and forward and backward with respect to the two electric wires set in the twisting machine and extending left and right. The tape winding head is made to approach from any desired direction among the directions.

According to the above configuration, the tape winding head is arranged in a space-saving manner by selecting the optimum direction (position with space) either up and down or front and back according to the space around the ends of the two wires set in the twist machine. The

A tape winding device for a twisted wire according to claim 3 is a tape winding device arranged in a twisting machine for twisting two electric wires to form a twisted wire. And a tape winding head that can be moved back and forth toward the electric wire by the moving means, the tape winding head having a tape holding drum for tape winding on the end of the twisted wire, and a tape cutter blade, A winding tape for supplying the tape to the tape holding drum and a motor for rotationally driving the tape holding drum are arranged, and a telescopic power transmission mechanism is arranged between the tape holding drum and the motor It is characterized by that.

With the above configuration, two electric wires are twisted in a twisting machine. For example, during the twisting operation, the tape winding head of the tape winding device is connected to the terminal (one terminal and / or other terminal) of the twisted portion of the two electric wires. The tape is wound (the tape winding is started or completed during the twisting operation). Tape winding should just be performed in the form wrapped in time during the twisting operation. The tape winding head advances toward the two electric wires by the moving means, and in this state, the tape winding is performed with the tape winding drum on the end of the twisted portion. As the tape winding head advances, the power transmission mechanism expands with the motor on the fixed frame side, and the tape winding drum is driven in this state. In addition, after winding the tape, the power transmission mechanism is compressed between the tape winding head and the fixed frame while moving backward. The advancing / retreating stroke of the tape winding head is absorbed by the expansion / contraction operation of the power transmission mechanism. As the power transmission mechanism, for example, a chain or a telescopic cylinder shaft can be applied. Since the motor and the winding tape, which are heavy in weight and space, are arranged on the fixed frame side, the tape winding head is made compact and lightweight.

The twisted wire tape winding device according to a fourth aspect of the present invention is the twisted wire tape winding device according to the third aspect, further comprising a tape presence / absence sensor that detects a change when the winding tape decreases on the outer peripheral surface side of the wound tape. It is characterized by that.

With the above configuration, the tape presence / absence sensor detects, for example, the color change of the core or the tape amount (tape thickness) when the winding tape decreases, and detects, for example, that there is little tape remaining before the winding tape is completely finished. By doing so (for example, by stopping the twisting machine or the tape winding device or notifying the operator), incomplete tape winding around the twisted wire is prevented.

According to the first aspect of the present invention, it is possible to reduce the time required for tape winding by starting or completing the tape winding of the twisted wire within the twisting time. Further, the tape winding position can be improved by bringing the tape winding head of the tape winding device closer to the two electric wires set in the twist machine and winding the tape. Further, by twisting the two electric wires set in the twisting machine with tape, twisting back of the twisted wire when the twisted wire is removed from the twisting machine and transported can be eliminated.

According to the second aspect of the present invention, the tape winding head can be arranged in a space-saving manner from either the top or bottom or the optimum direction according to the space around the ends of the two electric wires set in the twist machine. .

According to the third aspect of the present invention, the time required for winding the tape can be reduced by starting or completing the winding of the twisted wire within, for example, the twisting time. Further, the tape winding position can be improved by bringing the tape winding head of the tape winding device closer to the two electric wires set in the twist machine and winding the tape. Further, by twisting the two electric wires set in the twisting machine with tape, twisting back of the twisted wire when the twisted wire is removed from the twisting machine and transported can be eliminated.

In addition, by placing a motor and winding tape with heavy weight and space on the fixed frame side, the tape winding head can be made compact and lightweight, thereby moving the tape winding head smoothly and quickly. And the space occupied by the tape winding device in the twisting machine can be reduced.

According to the invention of the fourth aspect, the tape replacement of the tape winding device can be performed at the optimum timing. For example, the tape presence / absence sensor detects that there is little tape remaining before the winding tape is completely finished, thereby preventing incomplete tape winding around the twisted wire.

It is a top view which shows one Embodiment of the tape winding method and tape winding apparatus of a twist wire which concern on this invention. It is a figure which shows the internal structure of one Embodiment of the tape winding apparatus of a twist line seeing from the side. It is a perspective view which shows the effect | action of the tape winding head of a tape winding apparatus. 1A and 1B show an embodiment of a moving means of a tape winding head of a tape winding apparatus, wherein FIG. 1A is a perspective view before movement (standby), and FIG. 2B is a perspective view after movement. It is a perspective view which shows each example of the arrangement | positioning form of the tape winding head of a tape winding apparatus. It is a flowchart which shows one Embodiment of the effect | action of a twist wire manufacturing apparatus, and the tape winding method of a twist wire. It is a top view which shows one form of the tape winding method and tape winding apparatus of the conventional twist line. It is a figure which shows the internal structure of one form of the conventional tape winding apparatus seeing from a side. It is a top view which shows the tape winding position of a twist line. It is a flowchart which shows the form of the effect | action of the conventional twist wire manufacturing apparatus, and the tape winding method of a twist wire.

1 to 3 show one embodiment of a twisted wire tape winding method and a tape winding device according to the present invention.

As shown in FIG. 1, a twist wire tape winding device 1 includes a left clamp 4 between left and

right clamps

4 and 5 for holding both

ends

3a and 3b of two electric wires 3 in a twist machine 2 of a twist wire manufacturing device. Near the end 3a ′ (FIG. 3) of the twisted wire 3 ′ (FIG. 3) of the twisted wire 3 ′ (FIG. 3) formed by twisting the two electric wires 3 with the twisting machine 2. A tape winding head 6 that can move forward and backward as indicated by an arrow A is provided.

Then, during the operation of twisting the two electric wires 3 by the twisting machine 2 to form the twisted wire 3 ′, the tape winding head 6 of the tape winding device 1 is advanced, and the tape winding head 6 twists the twisted wire 3 ′. A tape winding 13 (see FIG. 9) is applied to one end 3a ′ of the twisted pair.

1, reference numeral 7 denotes a drive portion including a motor of the twist machine 2, reference numeral 8 denotes a base of the twist machine 2, reference numeral 9 denotes an operator, and reference numeral 10 denotes a shield wire hook. As a method (driving mechanism) for twisting two electric wires 3 into a twisted wire 3 '(forming a twisted portion), various methods as described in Patent Documents 3 to 5 of the prior art can be used as appropriate. It is. As described in the prior art of FIG. 7, the twisting machine 2 constitutes a twisted wire manufacturing apparatus together with a not-shown measuring / cutting machine, terminal crimping machine, and tape winding device 1.

As shown in FIG. 2, the tape winding device 1 includes a rear fixed frame 11 and a front movable case 12. A winding tape 15 configured by winding the tape 13 around the core 14, a tape presence / absence detection sensor 16, and a driving motor 17 are installed on the fixed frame 11, and a fixed unit (represented by reference numeral 11) is configured. ing.

The movable case 12 is provided with a tape holding drum 18, a tape cutter blade 19, and a plurality of gears (only one shown) 20 for driving the tape holding drum 18, and a tape winding head (movable) Unit) 6 is configured. An endless chain (power transmission mechanism) 22 for rotating the tape holding drum 18 is provided between the gear 20 on the movable case 12 side and the gear 21 fixed to the shaft of the motor 17 on the fixed frame 11 side. It is stretched over freely.

As an example of the moving means of the tape winding head 6, the movable case 12 is connected to the fixed frame 11 by an air cylinder (not shown) which is inclined horizontally or slightly upward for driving (moving) the tape winding head. As other moving means of the tape winding head 6, a motor (not shown), a screw shaft (not shown) inclined horizontally or slightly upward rotated by the motor, and meshed with the screw shaft are fixed to the movable case 12. It is also possible to use a nut block (not shown). In each figure, the “front-rear” directionality is described with respect to the operator 9 with the electric wire 3 side in front.

In the fixed unit (11) of the tape winding device 1, the motor 17 is disposed on the lower side, the winding tape 15 is disposed on the upper side, and the tape presence / absence sensor 16 is disposed adjacent to the upper side of the winding tape 15. Further, in the movable tape winding head 6, the tape holding drum 18 is disposed on the upper front side, the tape cutter blade 19 is disposed on the rear side of the tape holding drum 18, and the gear 20 is disposed on the lower side.

In FIG. 2, the tape 13 fed forward from the winding tape 15 is cut by the cutter blade 19, and the rear end portion of the tape portion 13 in front of the cutting position 13a is attached to the outer peripheral surface of the tape holding drum 18. The tape part 13 has shown the state which block | closed the entrance of the notch recessed part 18a of the tape holding drum 18. FIG. Actually, the cutting of the tape 13 by the cutter blade 19 is performed when the tape holding drum 18 completes winding of the tape around the twisted wire 3 ′.

The movable case 12 of the tape winding head 6 is driven by a moving means such as an air cylinder (not shown) and moves forward toward the twist line 3 ′ as shown by the solid line in FIG. 3 (the movable case 12 also moves forward in FIG. 2). Status).

As a result, one end 3a ′ of the twisted pair (instead of reference numeral 3 ′) of the two electric wires 3 (twist wire 3 ′) is inserted together with the tape 13 into the notch recess 18a of the tape holding drum 18 of FIG. In FIG. 2, the electric wire 3 is illustrated outside the tape holding drum 18 for the sake of convenience, but is actually inserted into the tape holding drum 18), a chain 22 driven by the motor 17, and a plurality of gears in the movable case 12 ( 2, the tape holding drum 18 is rotated via the tape 20 and the tape 13 is wound around one end 3a ′ of the twisted portion of the twisted wire 3 ′. In FIG. 3, the illustration of the tape holding drum 18 is omitted.

As shown in FIG. 2, when the tape winding head 6 is moved forward by a moving means such as an air cylinder, the chain 22 extends between the gear 20 on the tape winding head 6 side and the gear 21 of the motor 17 on the fixed frame 11 side. Then, the chain 22 is rotationally driven by the gear 21 of the motor 17, and the tape holding drum 18 rotates through the plurality of gears 20 on the tape winding head 6 side. When the tape winding head 6 moves backward as shown by the chain line in FIG. 3, the gear 20 on the tape winding head 6 side (FIG. 2) and the gear 21 of the motor 17 on the fixed frame 11 side approach each other, and the chain 22 It slacks downward and absorbs the retreat stroke of the tape winding head 6.

Thus, by arranging the heavy motor 17 and the large winding tape 15 on the fixed frame 11 side, the tape winding head 6 which is a movable unit is configured to be compact and lightweight. In the narrow space in the vicinity of one clamp 4 of the twisting machine 2 in FIG. 3 (FIG. 1 is a simplified diagram, the actual narrow space is not shown), and the tape winding head 6 can be smoothly and quickly moved without interference. It can be surely entered.

Thus, the tape winding head 6 is brought close to the one end 3a ′ of the twisted portion 3a of the twisted wire 3 ′ formed by the two electric wires 3 held by the one clamp 4 in FIG. The tape 13 can be wound around the “one end 3 a” of the “twisted pair of” with high positional accuracy.

In the example of FIG. 3, one (left side) clamp 4 is configured by providing a pair of openable and closable chucks (gripping portions) 24 on the front end side of the horizontal cylindrical portion 23. With each chuck 24 holding one end 3 a of each electric wire 3, each chuck 24 is rotationally driven integrally with the cylindrical portion 23 by a motor (not shown) of the driving unit 7 (FIG. 1), and the two electric wires 3 Is twisted into a twisted wire 3 ′.

A limit switch (not shown) is provided on the front end side of the movable case 12 of the tape winding head 6, and when the tape winding head 6 moves forward, the twist line 3 ′ gripped by the clamp 4 touches this limit switch. The limit switch is turned on, the motor 17 of the fixed unit (11) rotates, the tape holding drum 18 (FIG. 2) rotates via the chain 22, and the tape is wound around the twisted portion of the twisted wire 3 '. Is started.

The forward movement of the tape winding head 6 is started by the opening / closing signal of the chuck 24 of the clamp 4 of the twist machine 2. For example, a control unit (not shown) that receives a closing signal of the chuck 24 drives a moving means such as an air cylinder (not shown) to advance the tape winding head 6 toward the two electric wires 3.

The movable case 12 of the tape winding head 6 is composed of vertical left and right side walls 12a and a narrow upper wall 12b connecting the left and right side walls 12a, and has front and rear and

lower openings

12c and 12d. . 2 is disposed in the front opening 12c, and the chain 22 (FIG. 2) is led out from the rear and lower openings 12d. The tape holding drum 18 and the gear 20 are rotatably supported on the left and right side walls 12a, for example. The tape cutter blade 19 (FIG. 2) is driven forward and backward by a short air cylinder or plunger (not shown) between the left and right side walls 12a after winding the tape around the twisted wire 3 'to cut the tape.

2, the fixed frame 11 of the tape winding head 6 has a horizontal bottom wall 25 and a support wall 26 raised from the rear end side of the bottom wall 25. The motor 17 is fixed to the bottom wall side 25, and the horizontal core 14 of the winding tape 15 is supported on the upper portion (winding tape support portion) 26 a of the support wall 26. Further, the tape presence / absence sensor 16 is fixed to the upper end side of the support wall 26 in an inverted state, and the detection surface 16a at the tip (lower end) of the tape presence / absence sensor 16 is close to the outer peripheral surface of the winding tape 15 (outer surface of the tape 13). Are arranged. The cable 16b of the tape presence sensor 16 is connected to a control unit (not shown).

The longitudinal axis 16s of the tape presence / absence sensor 16 is offset (indicated by reference numeral S) to the rear of the longitudinal center axis 15s of the winding tape 15 supported by the tape support portion 26a. Sexuality is enhanced. That is, the winding tape 15 is detached forward from the winding tape support portion 26a and is mounted and set on the winding tape support portion 26a from the front. When the winding tape 15 is detached, the detection surface 16a at the lower end of the tape presence sensor 16 is By being positioned at the upper rear portion of the winding tape 15 supported by the winding tape support portion 26a, for example, the winding tape 15 can be detached obliquely upward, or can be attached from obliquely above. Improves.

When the tape presence sensor 16 finishes using the tape 13 of the winding tape 15 (preferably just before the tape 13 is used up), the operation of the twisting machine 2 of FIG. 1 or the tape winding device including the same is stopped. The generation of the non-tape-wound product (twist wire 3 ′ not taped around the terminal 3a ′ in FIG. 3) is prevented. The tape presence / absence sensor 16 captures the color of the core 14 when the tape 13 of the winding tape 15 is reduced and detects the presence / absence (very little) of the tape 13 by the color change. The color of the tape 13 and the color of the core 14 are different.

When the tape 13 of the winding tape 15 is unwound and is just before the end (the state where the tape 13 is reduced), the core 14 of the winding tape 15 is seen through the tape 13 and the tape presence sensor 16 gradually appears. It uses the fact that the color appears to change darkly. As the tape presence sensor 16, for example, a commercially available color discrimination sensor or the like can be used. The color discrimination sensor includes, for example, a light transmitting lens, a light receiving lens, a light receiving element, a light transmitting cable, and a light receiving cable.

When the color change of the winding tape 15 is detected by the tape presence / absence sensor 16, for example, when the color changes greatly, the tape presence / absence sensor 16 is turned on and the equipment (twist machine 2 or tape winding device 1) is stopped. In addition, the operator is informed that the tape has been lost (extremely reduced) by sound or the like. For example, a control unit (not shown) that has received an ON signal from the tape presence / absence sensor 16 turns off an operation switch of the equipment (twist machine 2 or tape winding device 1) to stop the equipment and activate a notification unit such as a buzzer.

As a result, the equipment does not stop in an incomplete winding state in which the tape 13 is wound halfway around the twisted wire 3 ′, and the equipment (twist machine 2 or tape) is wound with the tape 13 completely wound around the twisted wire 3 ′. Since the winding device 1) is stopped, the occurrence of incomplete tape winding as well as the prevention of the occurrence of the tape unwrapped product is prevented. In this way, the tape replacement is reliably performed with good timing. As the tape presence / absence sensor 16, a sensor (for example, a non-contact type laser displacement sensor) that detects the amount (thickness) of the tape 13 instead of the color change of the tape 13 can be used. The same effect as described above is achieved.

In the example of FIG. 2, the chain 22 is used as a power transmission mechanism (dimension absorbing and driving means) between the tape winding head (movable unit) 6 and the fixed unit (11). Or using a telescopic pipe shaft (not shown) to engage both ends of the pipe shaft with the bevel gear on the movable part and the bevel gear on the motor side via the bevel gear (not shown). It is also possible to do.

The clamp 5 on the right side of the twisting machine 2 in FIG. 1 is, for example, a fixed type without rotating as in the prior art of Patent Document 3, and is connected to the two electric wires 3 between the left and

right clamps

4 and 5. You may form a twist part (3 '). Alternatively, as in one form of Patent Document 4, the pair of right clamps (5) rotate in the same direction as the left clamp 4, and a moving member (not shown) is attached in the middle of the two electric wires 3. Alternatively, the twisted portion 3 ′ may be formed in the two electric wires 3 between the left clamp 4 and the moving member.

Alternatively, as in Patent Document 5, the left clamp 4 is fixed and does not rotate, the right clamp 5 is rotated, and a rotor (not shown) arranged in the middle of the two electric wires 3 is moved to the right. Then, the twisted portion 3 ′ may be formed on the two electric wires 3 between the left clamp 4 and the rotor.

In the example of FIG. 1, the tape winding device 1 is disposed (installed) near the clamp 4 on the left side of the twist machine 2, but on both the clamp 4 on the left side of the twist machine 2 and the clamp 5 on the right side. May be installed. It is also possible to arrange the tape winding device 1 only near the clamp 5 on the right side of the twisting machine 2. Even if the tape is wound only on one end 3a 'of the twisted wire 3', the twisted portion 3 'has an effect of preventing untwisting of the twisted portion.

4 (a) and 4 (b) show another embodiment of the moving means of the tape winding head 6 of the tape winding device 1. FIG.

In the description of FIGS. 1 to 3 described above, an example using a moving means (not shown) such as a horizontal or upwardly inclined air cylinder or screw shaft has been described. However, the moving means 27 shown in FIG. The two

links

28 and 29 and one air cylinder 30 are rotated in the electric wire radial direction toward the two electric wires (twist wires) 3. 4, the tape winding head 6 is shown upside down from FIG. In order to match (apply) the tape winding apparatus 1 of the embodiment of FIGS. 2 to 3, the upper side of FIG. 4 will be described below, and the lower side of FIG.

As shown in FIG. 4A, in the standby state of the tape winding head 6, the tip (front end) of the movable link 28 is fixed to the movable case 12 of the tape winding head 6, and the movable link 28 is straight rearward from the movable case 12. The distal end (upper end) of the fixed link 29 is supported by the rotary shaft 31 at an intermediate portion of the movable link 28, the fixed link 29 is positioned orthogonal to the movable link 28, and the movable link 28 is positioned behind the fixed link 29. The tip (upper end) of the extended rod 30a of the air cylinder 30 is connected to the air cylinder 30 and the air cylinder body 30b is fixed to the fixed frame 11 of FIG.

As shown in FIG. 4B, by compressing the air cylinder 30 and pulling the rod 30a downward as shown by the arrow, the movable link 28 rotates about the rotation shaft 31 at the tip of the fixed link 29, and the movable link 28 The rear end rotates in the pull-in direction of the rod 30a, and the front end of the movable link 28 rotates integrally with the tape winding head 6 in the direction opposite to the pull-in direction of the rod 30a (the approaching direction to the two electric wires 3). To do. Thereby, the two electric wires 3 are inserted in the notch recessed part 18a of the tape holding drum 18 (FIG. 2) of the tape winding head 6. FIG.

Then, while the twisting machine 2 is twisting the two electric wires 3, the tape holding drum 18 of the tape winding head 6 completes the tape winding on the twisted portion 3 'of the two electric wires 3 as shown in FIG. From (b) to FIG. 4 (a), the tape winding head 6 returns from the approaching state to the twisted wire 3 'in the twisted wire radial direction and returns to the standby state.

In FIG. 4, the movable link 28 is rotated by the air cylinder 30, but instead of the air cylinder 30, for example, a motor (not shown), a screw shaft (not shown) rotated by the motor, and a tooth on the screw shaft. It is also possible to use a nut block (not shown) that is pivotally supported by the movable link 28. Further, instead of the fixed link 29, a part of the fixed frame 11 (FIG. 2) (for example, the side wall 12a) can be used. The movable link 28 and the air cylinder 30 or a motor (not shown) constitute a moving means for the tape winding head 6. Further, without using the movable link 28 and the fixed link 29, the motor (not shown), the screw shaft (not shown) rotated by the motor, and the screw shaft are engaged with each other, and the movable case 12 of the tape winding head 6 is provided. It is also possible to move the tape winding head 6 with a nut block (not shown).

FIG. 5 shows each embodiment in which the moving direction of the tape winding head 6 of FIG. 4 is changed.

In the example of FIG. 4, described in moving upward from below the tape winding head 6 Example of approaching to the two wires 3 by (rotated) (example of tape-head ₆₁ shown in the lower side of FIG. 5) but, as in the example of the tape winding head 6 ₂ shown in the upper side of FIG. 5, or move toward downward in two wires 3 from above the tape winding head 6 ₂ (rotation), or 5 of as in the example of the tape winding head 6 ₃ shown on the right, or move toward a forward two-wires 3 later taping head 6 ₃ (rotation), or tape shown on the left side of FIG. 5 as an example of the winding heads 6 _4, it is also possible to move from the front of the tape winding head 6 ₄ toward the electric wire 3 of the two backward (rotated). “Forward” is the direction in which the operator faces in FIG.

For example, in the case of tape winding head 6 ₂ shown in the upper side of FIG. 5, for example, in the form of a tape winding device which is turned upside down the tape winding device 1 symmetrically in FIG. 2, by directly using Figure 4 (FIG. 5 When taping the example corresponding to the head 6 ₂₎ will be described as shown in the upper, the motor 17 is arranged above the fixed frame 11, the tape 15 and the tape detecting sensor 16 around the lower part of the fixed frame 11 is disposed, the movable case The movable link 28 connected to the movable frame 28 is located in the middle of the fixed frame 11 in the height direction.

Further, in FIG. 5 for tape winding head 6 ₃ shown on the right, for example, is erected further be 90 ° inverted clockwise those tape winding device 1 of FIG. 2 is turned upside down in line symmetry, in FIG. 4 The tape winding head 6, the

links

28 and 29, and the air cylinder 30 are arranged so as to be inverted 90 ° clockwise.

The tape winding head 6 above the tape winding in the case of the head 6 _4, for example, a tape winding device 1 of FIG. 2 is erected by 90 ° reversed clockwise, the lower side of the fixed frame 11 shown on the left side of FIG. 5 It is preferable that ₄ is positioned obliquely downward, the movable link 28 is erected, and the fixed link 29 and the air cylinder 30 are arranged substantially horizontally.

It is possible to obtain the arrangement of the tape winding heads 6 ₁ to 6 ₄ of FIG. 5 by reversing the tape winding head 6 having the same configuration 90 ° clockwise or counterclockwise. Further, the approaching direction of the tape winding head 6 with respect to the twisted wire 3 ′ is not limited to the top and bottom and front and rear, but from obliquely upward, obliquely downward, obliquely rearward, and obliquely forward (any of 360 ° directions). Or from a desired direction).

FIG. 6 shows a method of winding a tape on the twisted wire 3 ′ formed by the twisting machine 2 of the twisted wire manufacturing apparatus using the tape winding device 1 of each of the above-described forms of FIG. 1 to FIG. 5, and a twisted wire manufacturing apparatus. The operation of the tape winding device 1 is shown.

Referring to FIG. 6, first, the operator turns on (turns on) the start switch of the twisted wire manufacturing apparatus in step (1). As a result, the twisted wire manufacturing apparatus measures and cuts the electric wire 3 with a measuring / cutting machine (not shown) in step 1, and then insulates the

terminals

3a and 3b of the electric wire 3 with a peeling machine (not shown). And a terminal (not shown) is crimped to the

terminals

3a and 3b of the electric wire 3 with a crimping machine (not shown).

Next, in step 2, the chucks 24 (FIG. 3) of the left and right clamps 4 and 5 (FIG. 1) of the twist machine 2 chuck and fix both ends (avoid terminals) 3a and 3b of the two wires 3. In that state, in step 3, a motor (not shown) of the twisting machine 2 rotates and the two electric wires 3 are twisted in pairs. In parallel with Step 3, the following Steps 4 to 6 are performed.

That is, in step 2, the pressure change of the air when the chuck 24 of the clamp 4 is closed by the air pressure is detected, and the tape winding device 1 is automatically started. In step 4, the tape winding head 6 of the tape winding device 1 is started. Approaches two electric wires 3. Next, in step 5, the tape holding drum 18 of the tape winding head 6 rotates to perform tape winding on the terminal 3a 'of the twisted portion of the twisted wire 3'. When the tape winding is completed, in step 6, the tape winding head 6 moves away from the twisted wire 3 'in the radial direction of the twisted wire 3'. The tape winding head 6 returns to a fixed position before the twisting operation of the electric wire 3 is completed. The tape winding may be started or completed during the twisting operation of the two electric wires 3. When tape winding is started during the twisting operation, the tape winding may not be completed during the twisting operation. It is effective if the tape is wound in the form of time wrapping during the twisting operation.

When the formation of the twist line 3 ′ is completed in step 3, the twist machine 2 opens the chucks 24 of the

clamps

4 and 5 at both ends and drops the twist line 3 ′ downward to be paid out in step 7. . Next, in step 8, members for twisting the two electric wires 3 (for example, the

clamps

4 and 5, a rotor (not shown), etc.) return to their home positions. In step 9, the operations in steps 1 to 8 are repeated until n twist lines 3 'are paid out. For example, n is about 20 to 30. One (one set) of twisted wires 3 ′ is composed of two electric wires 3 with terminals.

After n twist lines 3 'have been paid out, the operator grasps a bundle of n twist lines 3' in step (2) or before n twist lines 3 'have been paid out. Then, a bundle of n twist wires 3 ′ that have been manufactured in advance is grasped, and in the step (3), the middle in the longitudinal direction of the twist wire bundle is bundled together with a rubber band (not shown) to make a bundle. Next, in step (4), the twisted wire bundle 33 (FIG. 1) bound by the rubber band is hung on the hanging tool 10.

The operations (1) to (4) of the worker in FIG. 6 are shown as the operations of the worker 9 in FIG. As in the operations (1) to (4) of the worker 9 in FIG. 1, the worker 9 takes the twisted wire bundle 33 that has been paid out in the state facing the front twisting machine 2 and holds a rubber (not shown) The middle part of the twisted wire bundle 33 is bundled with a band, and the body is inverted 90 ° from that state, and the twisted wire bundle 33 is hung on the right hanging tool 10 (the middle part of the twisted wire bundle 33 is tied with a rubber band) Or after 90 ° inversion).

Thus, the operation of the worker 9 is significantly less than the operation of the worker in the conventional FIG. Moreover, there is no trouble of transporting the twisted wire 3 ′ to the tape winding device as in the prior art, and there is no fear of untwisting of the twisted pair of the twisted wire 3 ′ during transport.

As shown in FIG. 1, the tape winding device 1 may be disposed only on one of the left and right sides of the twist machine 2 or may be disposed on both the left and right sides of the twist machine 2. Even if tape winding is performed only on the terminal 3a ′ on one side of the twisted wire 3 ′, there is an effect of preventing untwisting of the twisted portion. If the two

tape winding devices

1 and 1 are arranged on both the left and right sides of the twisting machine 2, tape winding can be simultaneously applied to the left and right terminals of the twisted portion of the twisted wire 3 '.

In this case, depending on the twisting method, for example, a rotor (not shown) is disposed between one clamp 4 (FIG. 1) and the longitudinal intermediate portion of each electric wire 3, and the rotor is placed on the other clamp 5 side. When each wire 3 is twisted from one clamp 4 side while being moved, for example, the tape 3 is taped to the terminal 3a ′ on one clamp 4 side by the tape winding head 6 of one tape winding device 1 in the middle of the pair twist. Winding and twisting of the terminal 3b 'on the other clamp 5 side is performed by the tape winding head 6 of the other tape winding device 1 when the twisting is almost or completely over the entire length of each electric wire 3. . In the case where, for example, one clamp 4 is rotated without using the rotor, and the other clamp 5 is not rotated and is not moved, and the pair of wires 3 are simultaneously twisted over the entire length of each wire 3, for example, In the middle (preferably just before the end of the twisting), the tape winding head 6 of each tape winding device 1 simultaneously performs tape winding on both ends 3a ′ and 3b ′ of the two electric wires 3.

The characteristics of the twisted wire tape winding device 1 and the tape winding method described above are summarized below.

First, while the two electric wires 3 are twisted in pairs, the tape winding around the twisted wire 3 'can be started or completed. At this time, since the winding time of the tape 13 is constant, depending on the length of the twisted wire 3 ′ (when it is short), there is a concern that the twisting of the two electric wires 3 may be completed before the tape 13 is wound. In that case, the twisting speed of the twisting machine 2 is controlled to make the twisting speed (time required for twisting) slower than the tape winding speed (time required for tape winding) of the tape winding device 1. It is possible to respond. Since the tape winding operation falls within the twist operation, the man-hour for tape winding is reduced.

Further, the tape winding head 6 of the tape winding device 1 can be arranged in a space-saving manner at a desired position so as not to interfere with a movable part such as the clamp 4 of the twist machine 2. In addition, at the timing when the tape winding head 6 of the tape winding device 1 approaches the two electric wires 3 (at the same time), the electric wire 3 and the tape are controlled so that the twisting of the two electric wires 3 is started. Unexpected interference with the winding head 6 is reliably prevented. In the embodiment of FIG. 6, the tape winding head 6 approaches the two electric wires 3 simultaneously with the closing operation of the chuck 24 (chucking operation of the two electric wires 3).

Further, tape winding on the twisted wire 3 ′ by the tape winding head 6 starts when the twisted wire 3 ′ contacts a limit switch (not shown) of the tape winding head 6. However, the twisted wire 3 'is surely caught and securely wound.

In addition, the tape winding head 6 can be returned to a fixed position before the twisting of the two electric wires 3 is completed (the tape winding is completed in the middle of the twisting of the two electric wires 3). The apparatus 1 can be provided with a margin in the twisted pair of the next two electric wires 3. For example, it is possible to control the timer so that the tape winding head 6 returns in less than 3 seconds from the twisting start signal, or to pick up the tape winding operation end signal.

Also, the tape replacement failure can be prevented by detecting the tape replacement timing with the sensor 16 and stopping the equipment and informing the operator with sound or the like. In addition, since the winding tape 15 is offset with respect to the sensor 16, the workability of the tape replacement is improved.

In addition, the tape winding head 6 and the tape winding motor 17 are separated to make the tape winding head 6 compact and lightweight. Further, the movement (movement) direction of the tape winding head 6 with respect to the twist line 3 ′ may be any of the vertical direction, the left-right direction, and the like, and may be linear movement or rotational movement. The tape winding head 6 can be appropriately arranged according to the presence or absence of a space around the line 3 ′.

Also, since the tape winding device 1 is incorporated in the twisting machine 2, the installation space for the conventional tape winding device is not required. Further, the tape winding position by the tape winding device 1 becomes machine control, and the tape winding positions at the left and right terminals 3a ′ and 3b ′ of the twisted wire 3 ′ (for example, the terminals 3a ′ and 3b ′ of the shielded wire 3 ′ in FIG. 9) The distance L) from the terminal 34 to the tape 13 is stabilized, and the tape winding position accuracy and the tape winding position quality are improved.

The twist winding tape winding method and the tape winding device according to the present invention reduce the time required for winding the twisted wire tape, increase the accuracy of the tape winding position, and eliminate twisting of the twisted wire during transportation, In addition, it can be used to reduce the space occupied by the tape winding device in the twisting machine and to change the tape of the tape winding device at an optimal timing.

DESCRIPTION OF SYMBOLS 1 Tape winding apparatus 2 Twist machine 3 Two electric wires 3 'Twist wire 6 Tape winding head 11 Fixed frame 13 Tape 14 Core 15 Winding tape 16 Tape presence sensor 17 Motor 18 Tape holding drum 19 Tape cutter blade 22 Chain (power transmission mechanism) )
27 Moving means

Claims

In the process of twisting two wires with a twist machine to form a twist wire, a tape winding head of a tape winding device is brought close to the ends of the two wires set in the twist machine, and the two wires A method of winding a twisted wire tape, wherein the tape winding head starts or completes at the end of the twisted portion during the twisting operation of the electric wire.
The tape winding head is caused to approach the two electric wires that are set in the twist machine and extend in the left and right directions from any desired direction in the 360 ° direction, up and down. Twist wire tape winding method.
A tape winding device arranged in a twisting machine for twisting two electric wires to form a twisted wire, the tape winding being capable of moving back and forth toward the electric wire by a moving means with respect to the fixed frame A tape holding head for winding the tape around the end of the twist wire, and a tape cutter blade, and a winding tape for supplying the tape to the tape holding drum on the fixed frame; A twist winding tape winding device comprising: a motor for rotating the tape holding drum; and a retractable power transmission mechanism disposed between the tape holding drum and the motor. .
4. The twisted wire tape winding device according to claim 3, further comprising a tape presence / absence sensor for detecting a change when the winding tape decreases on an outer peripheral surface side of the winding tape.