JPH0147869B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement in an electric wire manufacturing apparatus that cuts a long covered electric wire to a predetermined size, strips off the coating from the end of the electric wire, and then solders the peeled end of the electric wire. Regarding.

The present applicant previously disclosed a "covered wire soldering machine" in Japanese Patent Application Laid-Open No. 82595/1982 as an example of the above-mentioned electric wire manufacturing apparatus. This machine consists of a wire cutting/stripping device, a wire transfer device that extends perpendicularly from the downstream side of the device in the wire supply direction and has a plurality of clamping tools attached at equal intervals, and It consists of a flux coating device disposed on the wire transfer path of the transfer device and a soldering device connected thereto, and this soldering device is of a type in which molten solder flows down in a waterfall form from a flow opening.

When the cut wire rod transferred by the transfer device reaches the lower part of the outlet, in the first embodiment, the oscillating motion at the time of stripping the coating using the transfer end portion of the transfer device as a fulcrum is used. In addition, in the second embodiment, the cut wire is delivered to a wire rod clamping and pulling means provided in the soldering device, and the coating-stripped end of each cut wire is held in the solder flow area for a predetermined period of time by the gripping and pulling means. After tightening, in the first embodiment, the transfer device is swung back to its original position, and in the second embodiment, the gripping and pulling means retreats in the axial direction of the wire and delivers the wire to the clamping tool.

However, there is an optimum soldering time (generally around 1 second), and if it is longer or shorter than that, the quality of the soldering will deteriorate. Above mentioned 1st
In the case of the embodiment, the soldering time is limited to the time from the time when the transfer device takes the wire from the pull-out clamp to the time when the entire transfer device swings and completes the coating stripping operation, and it is impossible to shorten the soldering time at least. This is not possible due to cycle timing.

In addition, in the case of the second embodiment described above, a special gripping and pulling means (in addition to gripping claws, a driving source and a timer are required) is required in order to present the wire end to the solder flow area, which only makes the device complicated and expensive. However, it takes longer than necessary to transfer the wire.

In view of the above-mentioned circumstances, the present invention performs a coating stripping operation by moving a transfer device in the wire feeding direction, and the distance traveled by one pitch of intermittent circulation of the wire transfer device is 1/2 of the distance between the wire clamps, Of the soldering device and the flux coating device, at least the soldering device is arranged corresponding to a clamp stop position corresponding to a moving distance of an odd number of pitches from the power transmission cable take-off clamp position, and the electric wire is placed at this stop position. When the clamping tools arrive (at this time, no wire clamping tool is located at the clamping position of the power transmission line), the transfer device moves upstream in the feeding direction and after a predetermined time moves downstream in the feeding direction. The present invention is characterized in that the stripped end of the cut wire is moved in and out of the solder flow area in the axial direction, and the soldering time can be maintained at an optimum time without being constrained by the work cycle of the cutting device. The purpose of this invention is to provide an electric wire manufacturing device for the purpose of.

A detailed description will be given below based on the embodiments shown in the drawings. For convenience of explanation, the left and right in Figures 1 and 2 are respectively referred to as "left" or "downstream in the transfer direction" and "right" or "upstream in the transfer direction", and the left and right in Figure 3 are referred to as "rear".
Also referred to as "upstream in the feeding direction,""front," or "downstream in the feeding direction."

Reference numeral 1 denotes a wire supply reel on which a wire 2 is wound.The wire 2 from the reel 1 passes through a guide roller 3 and a group of expansion/contraction rollers 4, and then is horizontally moved forward by the continuous rotation of two feed rollers 5, 5. The wire is fed along the extending feed axis H ₁ and passes through the slack forming section 6 to the wire guide 7 and the length measuring feed device 8 .

The wire guide 7 has a pair of front and rear support blocks 9.
a, 9b are connected by a pair of left and right connecting rods 10,
Each support block 9a, 9b has the feed axis _H1
The front and rear guide tubes 11a, 11b are supported through the support blocks 11a, 11b, and the guide tubes 11a, 11b are appropriately spaced apart in the center between the support blocks 9a, 9b, and the electric wire 2 inserted through the guide tubes 11a, 11b is supported. It is exposed at this space. The tip of the support arm 12 is fixed to the support block 9b, and the base of the support arm 12 extending to the right is linked to a moving mechanism 13, so that the entire electric wire guide 7 is moved back and forth by the operation of the moving mechanism 13.

Reference numeral 14 denotes a wire clamp attached to the wire guide 7. A holding block 14a is fixed to the right side surface of the support block 9b, and the wire clamp 14 is slid into a through hole 14b formed in the holding block 14a, the support block 9b, and the rear guide tube 11b. The moving rod 14c is loosely inserted, and the spring 14a wound around the right side of the sliding rod 14c normally biases the tip of the sliding rod 14c to pull out to the right from the rear guide tube 11b, and the movement is performed as appropriate. A cam operating mechanism 14e linked to the mechanism 13 pushes the sliding rod 14c to the left so that the tip of the sliding rod 14c enters the rear guide tube 11b, and presses the electric wire 2 that can be inserted into the rear guide tube 11b against the inner wall of the tube. The electric wire 2 is fixedly held by the electric wire 2.

The length measuring and feeding device 8 supports a pair of vertical rotation shafts 8a, 8a on the left and right sides of the feeding axis _H1 ,
A pair of opening/closing arms 8b, 8b whose bases are rotatably pivoted to each of the vertical rotation shafts 8a, 8a are provided, and a pair of length measuring feed rollers 8c, 8c is provided at the tip of each opening/closing arm 8b, 8b. It is pivoted. The two rotating shafts 8a, 8a have coaxially fixed gears (not shown) meshing with each other, and the transmission belt mechanism 8.
d, 8d to transmit the rotation of each rotating shaft 8a, 8a to each of the length measuring and feeding rollers 8c, 8c, and one rotating shaft 8a is connected to a drive motor (not shown).
A length measuring device (not shown) including an encoder is connected to the other rotating shaft 8a.

15 is the electric wire guide 7 and the length measuring and feeding device 8;
Left and right cutter heads 16a and 16b, which are arranged opposite to each other with the feed axis line _H1 as a boundary and can be opened and closed, and each cutter head 16 are installed in front of the cutting device.
Core wire cutting blades 17 arranged oppositely in the center of a and 16b
a, 17b, and a pair of coated cutting blades 18 arranged facing each other on both the front and back sides of the core wire cutting blades 17a, 17b.
a, 18b, 18c, and 18d, and by closing the left and right cutter heads 16a and 16b, the power transmission line 2 is cut to a predetermined size and only the coating on both sides of the cut portion is cut.

19 is a feeding axis slightly in front of the cutting device 15;
The sagging prevention guide provided on _H1 supports the power transmission line 2 with the U-shaped portion 19a and prevents the electric wire 2 from sagging.

Reference numeral 20 denotes a wire transfer device installed to the left of the front side of the cutting device 15 and the droop prevention guide 19, and has the following configuration.

21 is the length measuring and feeding device 8 and the cutting device 18;
A box with a built-in drive source installed on the left side of the box, 22a, 2
2b is a bearing fixed to the front and rear of the upper surface of the box body 21,
A rotating shaft 23 is supported in the front-rear direction, and the rotating shaft 23 has a spline shaft 23a that extends forward by an appropriate length from the bearing 22a. center axis H ₂ via the belt transmission mechanism 24.
It is designed to rotate intermittently by 1/8 rotation in the counterclockwise direction (Figure 2).

Reference numeral 25 denotes a cylindrical body externally fitted on the spline shaft 23a so as to be integrally rotatable and slidable in the front-rear direction, and a disk 26 of an appropriate diameter is fixed to the front end with the center aligned with the central axis _H2 . Four electric wire clamps 27 are attached radially to the outer periphery of the rear surface of the disk 26 at equal angular intervals.

Each of the wire clamps 27 includes a mounting plate 27a protruding from the rear surface of the disk 26, and a pair of sector gears 27b ₁ and 27b ₂ pivotally supported at the tip of the rear surface of the mounting plate 27a.
, clamping claws 27c ₁ and 27c ₂ that protrude from each of the gears and have comb-teeth shaped tips, a link 27d whose one end is pivotally connected to the outer clamping claw 27c ₁ , and a concave member 27
a convex sliding plate 27f which is slidable in the radial direction of the disc 12 using e as a guide and has the other end of the link 27d pivoted to the outer end; and an inner end of the sliding plate 27f. It consists of a tension spring 27g stretched between the disk 12 and the vicinity of the center thereof, and a push roller 27h pivotally supported at the intermediate portion of the sliding plate 27f. Therefore, each wire clamping tool 27 is normally pulled by the tension spring 27g to the sliding plate 27f and link 27d toward the center of the disc 26, urging the clamping claws 27c ₁ and 27c ₂ in the closing direction, and pushing them. The roller 27h is the tension spring 27
The clamping claws 27c ₁ and 27c ₂ are designed to close when receiving an outward pushing force against the spring force of g.

Reference numeral 28 denotes a vertical cam plate pivotally supported on the left side of the box body 21, with cam grooves 28a and 28b cut on both the left and right sides, and a drive source (not shown) built into the box body 21 to horizontally move the left and right sides. It is arranged to rotate intermittently about one rotation around the central axis of.

Reference numeral 29 designates a swinging arm for moving the disk 26 back and forth, whose intermediate portion is supported on the upper front surface of the box body 21 and is swingable in the front and rear directions, and which engages the cam follower 30, which is pivotally supported at the lower end, in the right cam groove 28b. A small diameter portion 25a in which a U-shaped member 31 is fixed at the upper end thereof, and a pair of push rollers 32a and 32b pivotally supported at the upper left and right ends of the member 31 are formed at the rear middle of the cylindrical body 25. It is engaged on both sides.

33 is a swinging arm for opening the wire clamping tool 27 whose intermediate part is supported on a base and is swingable in the front and rear directions;
A cam follower 34 pivotally supported at the rear end is engaged with the left cam groove 28a. A cam plate 35 is rotatably fitted onto the cylindrical body 25 between the disk 26 and the small diameter portion 25a, and has protrusions 35a and 35b formed on the left and right outer peripheral surfaces, and is normally attached to the wire clamp holder 27.
A pushing roller 27h is engaged with the outer peripheral surface of the projections 35a and 35b. In addition, the cam plate 35
The right rear surface of the swing arm 33 and the front end of the swing arm 33 are connected by a rod 36 via a universal joint. Therefore, the projections 35a and 35b are always aligned with the central axis.
Two electric wire clamps ₂ are located slightly above and below the left and right horizontal line H ₃ passing through H 2 and are placed on the left and right when the disk 26 rotates 1/8.
7 and 27 open the clamping claws 27c ₁ and 27c ₂ by engaging the respective protrusions 35a and 35b with the pushing roller 27h immediately before reaching the left and right horizontal line _H3 , and then half open due to the action of the cam plate 28. As the rod 36 rises, the cam plate 35 rotates slightly in the clockwise direction in FIG.
The clamping claws 27c ₁ and 27c ₂ are closed by releasing the engagement at 7h. The cam plate 35 is connected to the disc 2
In the middle of the next 1/8 rotation from 6, the rod 36 descends and returns to its original position.

Reference numerals 37 and 38 designate a flux coating device and a soldering device which are installed behind the disk 26 at approximately 45° angle positions to the right and upper left of the central axis _H2 . Among these, the flux applicator 37 has an opening 37a ₁ formed in the front surface of the flux storage tank 37a for inserting the rear end bare wire portion 2'b of the cut electric wire 2', and has an injection port facing downward inside the opening 37a ₁ . An injection nozzle 37b is provided in the flux storage tank 37a, and the flux F in the flux storage tank 37a is sent to the injection nozzle 37b by a circulation pump 37c, and is injected downward from the nozzle 37b.

The soldering device 38 has a notch 38a ₁ formed at the center of the front edge of the solder tank 38a for inserting the rear end bare wire portion 2'B, and a notch 38a ₁ for extending the rear end bare wire portion 2'B. A solder jet part 38b is provided with an elongated rectangular jet port _38b1 , and the molten solder S is fluidized by a solder heating melter and a temperature controller (both not shown) built into the solder tank 38a. The supply pump 38c sprays the solder through the passage 38d to the upper opening _38b2 of the solder jet section 38b, and causes it to flow down from the jet port _38b1 in a waterfall shape.

Reference numeral 39 denotes a storage box with an upward opening and elongated in the front-rear direction, which is installed below the left side of the disk 26.

Next, the operation of the entire electric wire manufacturing apparatus of the present invention will be explained in accordance with the timing chart of FIG. 6. The starting point of the explanation is time t1 (=t14), and the state of the entire apparatus at this time is as follows. That is, the wire guide 7 is in the front position, the front end of the front guide tube 11a has reached the vicinity of the coated cutting blades 18c and 18d of the cutting device 15 which is in the open state, and the wire clamp 14 is open to release the wire 2. .
The length measuring feed roller 8c is closed and the front/rear guide tube 11
The electric wire 2 exposed between a and 11b is clamped.
Further, the wire transfer device 20 is stopped, and the wire clamping tools 27 are arranged on the left, right, upper and lower sides of the central axis _H2 , and the left and right wire clamping tools 27, 27 each have a pair of clamping claws _27c1. , 27c ₂ are opened downward and upward, and the disc 26 is in the rear position. The flux coating device 37 and the soldering device 38 are in constant operation.

It is now assumed that length measurement feeding of the electric wire 2 by the rotation of the length measurement feeding roller 8c has just been completed (time t14). Incidentally, the front end portion of the power transmission line 2 has already been stripped of its covering in the previous cycle to form a front end bare wire portion 2a.

Time t1→t2...As the length measuring feed roller 8c stops rotating, the wire clamp 14 is moved to the cam actuating mechanism 1.
4e closes and grips the rear part of the electric wire 2. Also, the cam plate 28 starts to be driven one rotation, and the rod 36 is first pushed up to close the left and right wire clamping tools 27, 27, of which the right wire clamping tool 27 clamps the wire 2.

Time t2→t3...The length measuring feed roller 8c opens, the cutting device 15 performs a closing operation, cuts the electric wire 2 to a predetermined size, and cuts into the coating on both sides of the cut portion.

Time t3 → t4...Electric wire guide 7 and disc 2
6 etc. move to the rear position and the front position, respectively, to move the remaining electric wire 2 backward and cut electric wire 2'.
is pulled forward, the cut coating is peeled off, and bare wire portions 2a and 2'b are formed at the front end of the electric wire 2 and the rear end of the cut electric wire 2', respectively. (Situation in FIG. 7) Time t4→t5→t6...The cutting device 15 performs an opening operation (t5), and then the wire guide 7 returns to its original front position. At the same time from time t4 to t6
Due to the rotation of the rotary shaft 23 during the period of rotation, the disk 26 rotates 1/8 in the counterclockwise direction in FIG. 2 and then stops. As a result, the wire clamping tools 27, 27 in the right and upper positions face the flux coating device 37 and the soldering device 38, respectively, and the cut wires 2', 2' that can be clamped by these wire clamping tools 27, 27 are The rear end has the opening 37a ₁ and the notch 3
Located slightly ahead of 8a ₁ . (Situation in Fig. 8) Time t6 → t7 → t8 → t9 → t10...The disc 26 retreats to the rear position (t8), and the bare wires at the rear ends of the cut wires 2' and 2' located on the right and left 2'b and 2'b face the flux jet area FA and solder flow area SA directly below the nozzle 37b and jet port 38b ₁ , respectively, and apply flux F and adhere solder S (state shown in Figure 9). . Predetermined time (t8→t9)
After that, the disk 26 is advanced to the front position (t9), and the cut wires 2', 2' can be retracted in the axial direction. (Situation shown in Fig. 10) Further, in parallel with these operations, the length measuring feed roller 8c closes (t7), and the flow changes from t7 to t8.
In between, the wire clamp 14 is opened. Furthermore, at time t8, the length measuring feed roller 8c starts rotating and starts length measuring feeding of the electric wire 2.

Time t10 → t11 → t12 → t13...The disc 26 starts 1/8 rotation (t10), and at time t11, when the disc 26 has rotated slightly, the disc 26 returns to the rear position (t11) →t13). Wire clamping tool 2 that can hold soldered cut wires 2'
Immediately before the wire 7 reaches the left position, the pushing roller 27h rides on the protrusion 35a and opens the clamping claws 27c ₁ and 27c ₂ (t12→t13), and the cut wire 2' is removed from the storage box 3.
9 and is contained within. In addition, just before the electric wire clamping tool 27 that was located at the lower right reaches the right position, the pushing roller 27h rides on the protrusion 35b and the clamping claw 2
7c ₁ and 27c ₂ are opened and when they reach the right position and stop (t13), the electric wire 2 that is being fed for length measurement passes between the gripping claws 27c ₁ and 27c ₂ . The state of the entire device at this time t13 is 1 to 3.
It is shown as a solid line in the figure.

Time t13→t14...Length measurement feed roller 8c that started length measurement feed rotation at time t8.
stops at time t14 when the length measuring device detects a predetermined feeding amount of the electric wire 2.

By repeating the above cycle from time t1 to time t14, electric wires of a predetermined size with coating removed from both ends and soldered at one end are manufactured in sequence and fully automatically.

The wire transfer device 20 in the above-mentioned embodiment has wire clamps 27 provided on the outer periphery of the disk 26 at equal radial intervals. An endless chain that can be driven in circulation is wound between a pair of spaced apart sprockets, and electric wire clamps are attached to this endless chain at equal intervals, and the entire transfer device is moved in the direction of wire feeding with the vicinity of the transfer end as a fulcrum. It can be implemented in the same way even if it is horizontally oscillated.

Further, in the above-mentioned embodiment, the four electric wire clamps 27 were provided on the disk 26, but in order to shorten the intermittent rotation time of one pitch of the disk 26 (times t4→t6 and t10→t13 in FIG. 6), The number of wire clamps may be increased. For example, when there are eight wire clamping tools 27 on the disc 26, the disc 26 is rotated 1/16th of a turn, and the flux coating device and the soldering device are rotated 3/16th of a turn from the power transmission line clamping position. The same purpose can be achieved if it is provided corresponding to the 5/16 rotation transfer position.

As detailed above, according to the wire manufacturing apparatus of the present invention, the wire transfer device causes the wire clamping tool to hold the power transmission line from the length measuring and feeding device, and separates it from the cutting device following the closing operation of the cutting device. Intermittent circulation 1 of the wire transfer device in which the rear end coating of the cut wire is stripped by moving in the direction
The pitch moving distance shall be 1/2 of the distance between the wire clamps, and at least the soldering device of the soldering device and the flux coating device will stop the clamping tool for an odd number of pitches from the power transmission line pick-up and clamping position. Because the wires were placed in accordance with the position, even though the wires were moved in and out of the solder flow area using the movement of the transfer device for sheathing, the wires were constantly being moved, regardless of the length of the wire feed. The time required for wires to enter the solder flow area can be set to the desired optimum time, which not only improves the solder finish of the product but also makes it possible to provide an overall compact and inexpensive device. be.

[Brief explanation of drawings]

The drawings all show one embodiment of the present invention; FIG. 1 is a plan view, FIG. 2 is a front view taken in the direction of FIG. 1, and FIG. 3 is an enlarged side view taken in the direction of FIG. 1. , FIG. 4 is a view taken in the direction of the arrows in FIG. 3, FIG. 5 is a view taken in the direction of the arrows in FIG. 4, FIG. 6 is a timing chart, and FIGS. In the figure, 2 is an electric wire, 2' is a cutting electric wire, 7 is an electric wire guide, 8 is a length measuring and feeding device, 15 is a cutting device, 20
26 is a wire transfer device, 26 is a disk, 27 is a wire clamping tool, 37 is a flux coating device, and 38 is a soldering device.

Claims (1)

[Scope of Claims] 1. A length measuring and feeding device that measures and feeds an electric wire, a cutting device that cuts the electric wire to a predetermined size and makes an incision in the covering of the cut end, and a wire feeding device of the cutting device. A wire transfer device that extends in a direction perpendicular to the feed direction from the downstream side of the feed direction and intermittently circulates a plurality of wire clamping devices attached at equal intervals; It consists of a flux applicator and a solder flow type soldering device that are arranged in sequence along the line, and the wire transfer device holds the power transmission line from the length measuring and feeding device with a wire clamping tool and closes the cutting device. In this device, the wire transfer device is moved in a direction away from the cutting device to remove the coating from the rear end of the cut wire, and the distance traveled by one intermittent circulation of the wire transfer device is 1/1/1 of the distance between the wire clamps. 2, of the soldering device and the flux coating device, at least the soldering device is arranged corresponding to a clamp stop position corresponding to a moving distance of an odd number of pitches from the pick-up clamp position of the power transmission line, and When the wire clamp reaches the stop position, the wire transfer device moves upstream in the feeding direction and, after a predetermined time, moves downstream in the feeding direction to move the stripped end of the cut wire to the solder flow area. An electric wire manufacturing device characterized by being able to be taken in and out in the axial direction. 2. The wire transfer device includes a disk that can be rotated intermittently around a central axis parallel to the feeding direction and can be moved in parallel in the direction of the central axis, and the wire clamping device is radially attached to the outer periphery of the disk. The electric wire manufacturing apparatus according to claim 1, which is installed at equal intervals. 3. The electric wire transfer device includes 1 wires spaced apart in the transfer direction.
A patent in which an endless chain is wound between a pair of sprockets to enable intermittent circulation, and the wire clamps are attached to the endless chain at equal intervals, making it possible to swing horizontally around the end of the transfer as a fulcrum. An electric wire manufacturing apparatus according to claim 1. 4. The electric wire manufacturing apparatus according to claim 1, wherein the flux coating device and the soldering device are arranged at 1-pitch and 3-pitch transfer positions from the power transmission line clamping position.