JPH03107318A - Terminating apparatus for coaxial cable - Google Patents

Abstract

PURPOSE:To automate the whole work from stripping to soldering of a cable terminal by installing processing stations along an endless track and processing a coaxial cable while moving to each station. CONSTITUTION:A coaxial cable terminating apparatus A comprises a carrier 10 having a turntable 11, a control panel 20, six sets of cable positioning devices 30 arranged around the table 11 at regular intervals, a first peeler 40, a shielding wire sorter 50, a second peeler 60, a first soldering apparatus 70, and a second soldering apparatus 80. A coaxial cable 1 is held horizontally on the turntable 11 with clamps 12, sent to the stations sequentially through the rotation of the turntable, 11, and processed as specified.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention consistently and efficiently performs terminal processing of coaxial cables, especially micro-coaxial cables that are easily bent and difficult to handle, from stripping to soldering to core and shield wires. This invention relates to a coaxial cable end processing device for good processing.

[Conventional technology]

When using ultrafine coaxial cables as wiring wires for electronic equipment, it is common to process the cable ends in advance to match the dimensions and shape of the circuit board, connector, etc. in order to improve the efficiency of circuit assembly. It is. The terminal processing involves stripping off the shield layer between the cable sheath (outer sheath) and core sheath (inner sheath), the inner sheath, and the core to expose a predetermined length, and then constructing the shield layer. The ends of a large number of twisted shield wires, that is, the parts exposed by stripping, are divided vertically and then twisted and bundled together.
After that, solder is applied to the tip of the core and the bundled shield wire. Conventionally, there was no equipment that could stably handle highly flexible ultra-fine coaxial cables, so this series of processing and between each process was difficult. All cable transportation is done manually.

[Invention tries to solve it! ! IB) Manual terminal processing has extremely low efficiency and is not suitable for mass production.

In addition, there are significant variations in processing accuracy and a high rate of defects.For example, ■ Manual cutting cannot completely eliminate excessive cuts during peeling, which may damage the underlying components and cause the cable to break easily. ■The shield wire is very thin, so when you scrape the wire with your fingertips, processing leaks may occur and several shield wires remain on the inner sheath.■The amount of solder attached to the core or the tip of the shield wire may be reduced. Since the determination is based on the intuition of the operator, the amount of solder may be too much or too little, leading to problems such as not being able to insert it into the terminal or poor adhesion to the board circuit.

Among these, for the problem (■), JP-A-5515071
4, Special Publication No. 63-33364, etc., is effective, but unless the problems of I can't hope for that.

Therefore, the present invention aims to provide a coaxial cable end processing device that automatically executes a series of end processing and also automatically transports the cable between each process.

Means for Solving Problem C] In order to solve the above problems, in the present invention, first to sixth stations are installed in order along an endless track. Further, a conveyance device is provided for moving a conveyance table, which is provided with horizontal holding means for the coaxial cable at a position corresponding to each station, along the above-mentioned trajectory while stopping at each station.

Furthermore, a positioning device for the coaxial cable supplied to the horizontal holding means of the transport table is provided at the first station.
5. at the second station. The first stripping device, which strips the outer jacket and inner jacket of the coaxial cable end to a predetermined length, is installed at the third station, which grasps the exposed core and uses the air jetted from the nozzle to distribute the exposed shield wire vertically downward. A shield sorting device that grips the remaining shield wires with a rotating chuck and twists them all at once is installed at the fourth station, and a second peeling device that cuts off the excess length of the exposed core and cuts the excess length of the inner jacket and then tears it off. The equipment is transferred to the fifth stage for the first soldering process, in which solder is applied to the exposed core and flux is applied to the twisted shield wires. The system adopts a configuration in which devices are installed at each station, the cables are transferred between each station by the above-mentioned conveying device, and each work at the second to fifth stations is simultaneously performed by commands from a control device.

It is desirable that the nozzle at the third station should move back and forth over the exposed shield wire while blowing out air.
It is also desirable that the rotating chuck grips the base of the sorting shield wire at its rising end and then descends while rotating.

[Operation] The coaxial cable set on the horizontal holding means on the transport table at the first station is first moved to the second station by the drive of the table, so that the core and the shield wire on the inner sheath are exposed to a predetermined length. be skinned. In the first peeling device used here, the cutting depth of the peeling blade is constant due to mechanization, so that the underlying member is not damaged.

Next, the next time the table moves, the coaxial cable moves to the third station, where exposed shield wires are sorted and twisted together. In this process, the tip of the core is grasped and the exposed shield wire is blown downward with air jetted from the nozzle, so no unsorted wire remains. The type that moves the nozzle back and forth once makes the streamer more accurate, and the type that lowers the nozzle while rotating it prevents leakage in the process because even if the tips of the shielded wires are scattered, the wires will not be left ungrasped. The reliability of the information will be further increased.

After this, the coaxial cable was moved to the 4th station in the same manner as above, and the exposed core excess length and exposed internal excess length that were exposed due to chaffing at the 3rd station were removed. be done. At this time, the inner sheath extra length is incompletely separated and torn off, so there is no damage to the core caused by excessive cutting of the cutting blade.

After this, the coaxial cable is sent to the fifth station where solder is applied to the tip of the core and the flux is applied to the tip of the shield wire, and to the sixth station where solder is applied to the tip of the shield wire to complete the terminal processing. During this time, the cables are held by the same holding means on the transport table and transported sequentially, so there is no need to change the grip between processes. Moreover, up to 5 cables can be processed simultaneously.
Work becomes smoother and more efficient.

〔Example〕

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a perspective view schematically showing the entire device. As described above, the coaxial cable end processing apparatus A of the embodiment includes a conveying apparatus 10 having a turntable 11, a 2m control board 20 for controlling the entire operation of the apparatus A, and a control panel 20 that is arranged around the table 11 into six equal parts. points (each equally divided point is a station)
(counterclockwise arrangement in the figure) set cable positioning device 30, first stripping device 40, shield wire sorting device 50, second stripping device 60, first soldering device 70, 2 soldering consists of a device 80.

As shown in FIG. 2, the conveyance device 10 has a total of six clamps 1 at positions corresponding to each station on the table 11.
There are 2. As shown in FIG. 3, the clamp 12 is of a toggle type that opens and closes the clamp 12b by raising and lowering a lever 12a, and holds the coaxial cable 1 horizontally in the radial direction of the table. This conveyance device 10 is
During operation of A, the drive motor 13 constantly rotates the manual shaft of the clutch/brake unit 14 with reduction gear, and when the brake 14 is released and the clutch is engaged by a command from the control device built into the control panel, the groove The 60" indexing device 15 using a cam rotates, and the table 11 attached to the output shaft of 15 rotates. Also, when this rotation progresses by 60 degrees, 14"
The second output shaft rotates exactly one revolution, which is detected by the sensor 16, and the table is stopped by releasing the clutch 14 and applying the brake.

A sensor 17 is installed just in front of each station and detects the passage of the cable on the table. With this sensor 17, the first stripping device 40 and each terminal processing device installed at the station behind it are activated only when a cable passing signal is output from the sensor 17 just before, resulting in unnecessary operation. can be eliminated.

FIG. 3 schematically shows the first station where the positioning device 30 is installed. The positioning device 30 has a structure in which a positioning block 31 having a V-groove for cable centering and a contact surface for the cable end, and a position adjustment mechanism 32 for this block are provided on a stand 33. When setting the cable in the clamp 12, the cable end is positioned with a block 31. This device 30
The position adjustment mechanism 32 is used to adjust the length of the outer sheathing in the next step. That is, when the pin hole 32C into which the lock pin 32b is inserted by rotating the cam plate 32a is selectively changed, the block 31 is displaced in the radial direction of the table, the center position of the cable end is changed, and the outer sheath (described later) is removed from the cable end. The distance to the rig blade (marked in Figure 16) changes.

FIG. 4 is a schematic diagram of the first peeling device 40. As shown in FIG.

This device 40 includes an outer sheath stripping blade 41, an inner sheath stripping blade 42, and a chuck 41a that are opened and closed by parallel chucks 41a and 42a.
In addition, a position adjustment mechanism 43 that adjusts the table radial position of the sheath stripping blade 41, and a support table 44 for each of these elements.
It has a cylinder 45 for raising and lowering the table, and a cylinder 46 for moving the above-mentioned elements including this cylinder back and forth in the table radial direction.

At the second station equipped with this device 40, after the cable is carried in by the conveyance device, first, the outer sheath stripping blade 41 and the inner sheath stripping blade 4, which had been evacuated from the cable conveyance path, are removed.
2 is advanced and raised by cylinder 45.46 0 Then,
Close both blades 41 and 42 perpendicular to the cable axis, and cut each blade into the entire circumference of the outer sheath 2 and inner sheath 3 of the cable 1 by a thickness of 2.3 mm, as shown in Figure 9. Let it happen. And 2
Retract the blade &11 with it closed and peel off the outer cover 2 and inner cover 3 at the same time. The zero position adjustment mechanism 43, which descends from that position and returns to the original standby position each month after retraction, has the same configuration as the above-mentioned 32, and is used to adjust the exposed length of the shield wire.

FIG. 5 shows a shield wire sorting device 50. As shown in FIG.

This sorting device 50 includes air chucks 51a and 52.
A centering chuck 51 and a core clamp 52 each using a as a driving source, an air nozzle 53 that reciprocates on the exposed shield wire in the cable longitudinal direction (table radial direction) using a crank mechanism 53a, and the shield wires after sorting are bundled together. Twisting rotary chuck 54, stepping motor 55
It has a ball mechanism 55 that uses a as a driving source to advance and retreat 51 and 52 in the radial direction of the table. Note that the rotary chuck 54 has a cylinder 54C that raises and lowers the cam rod 54b shown in FIG.
a is closed by a bringing force. Further, when the motor 54d is driven, the pawl rotates, while when the crank mechanism 54.6 is driven, the above-mentioned elements including the pawl move up and down.

At the third station equipped with this sorting device ff150, first, the centering chuck 51 moves forward until it closes just in front of the clamp 12, and lightly grasps the cable 1 set in the clamp 12. Retreat to exposed core.

Next, the core clamp 52 grips the tip of the exposed core 4 of the cable centered in the above operation as shown in Fig. 1θ, and then the nozzle 53 moves back and forth over the exposed shield vAS while blowing out air. and distribute vA5 vertically downward. Further, when this sorting is completed, the claws 54a rise and close, and then descend while rotating to twist the entire sorted wires 5 into one stranded wire.

FIG. 6 is an overall schematic diagram of the second peeling device 60. This device 60 is used to finish the step-stripping dimension at the end of the cable, and includes an inner jacket cutting blade 61, a cutting blade 62 for the core extra length disposed coaxially with this, and these blades 61, 62. It has a chuck 63 for tearing off the inner sheath length part which is arranged at a different level from the cable part, and a lifting cylinder 64 for lowering the blades 61 and 62 from the cable part and moving the chuck 63 to the cable part instead. . Blade 61, 62 and chuck 6
3 are individually driven to open and close by parallel chucks 61a, 62a, and 63a.

Further, in order to adjust the final stripped length of the core 4 (Ll in FIG. 16), the blade 62 and the chuck 63 are provided with a position adjustment mechanism 65 so that the setting position in the table radial direction can be changed. It is.

In order to adjust the final exposed length of the inner sheath 3 (see FIG. 16), the blade 61 is configured so that the position in the radial direction of the table can be similarly changed by a position adjustment mechanism 66. These position adjustment mechanisms 65 and 66 also have the same structure as 32 in FIG. 3, so a detailed explanation thereof will be omitted here.

In addition, the device 60 is provided with a cylinder 67 that moves the aforementioned elements together in a radial direction of the table.

In the fourth stage having this second peeling device 60, the cutting blade 61 and the cutting blade 62 are moved forward and upward from the retracted position, and then, as shown in FIG. Close at the same time in the right angle direction and cut into cable 1. At this time, since the blades 61 are designed so that the opposing blade portions cross over, the extra length of the core 4 is completely cut off. After this, 61 and 62 are opened and lowered, and instead of this, the chuck 63 that has lowered the cable section grasps the extra length of the inner sheath 3 as shown in FIG.
This tearing and removal process, in which the inner sheath is pulled back and removed from the cut position, is an effective operation for preventing damage to the core, as described above.

FIG. 7 is an overall view of the first soldering device 70. This device 70 has a lifting means 71a as shown in FIG.
A soldering iron 71 equipped with
A linear motor-driven movement that moves the solder supply device 72 that supplies the solder 2a in the radial direction of the table and switches the position of the soldering iron 71 to either above the exposed core or directly above the soldering iron tip cleaner 73, which is also the waiting point of the soldering iron. It has a table 74, a core receiver 75 that is raised and lowered by a cylinder 75a, a flux tank 76 and a dip tank 77 shown in FIG.

When the dip tank 77 is pushed up by the cylinder 77a, the flux in the tank 76 is pumped up and the dip tank 77 rises to a position where the shield wires after distribution are immersed.

Reference numeral 78 in FIG. 7(C) is a clamp that is lowered together with the soldering iron 71, and serves to sometimes position the core during soldering.

This first soldering is carried out at the fifth station equipped with the device 70, where the core receiver 75 rises to receive the tip of the core 4 from below as shown in FIG. The trowel 71 is moved onto the core tip, and then 71a
lowers the core 71 to the soldering point. Clamp 78
The exposed inner jacket is sandwiched between the core receiver 75 and the core receiver 75 during its descent, but this is omitted in FIG. soldering iron 71
When it descends to a fixed point, thread solder 72a is supplied from 72 and soldering begins. After soldering, table 74
This is done while moving the soldering iron back, so the solder adheres unevenly (adheres) to the entire area of the tip of the core.

Further, in parallel with this solder attachment, the dip tank 77 in the flux tank rises, and the tips of the shield wires after sorting are immersed in the flux in the dip tank, completing the flux tank coating for the shield wires 5.

After this, each of the above-mentioned elements returns to its original position as shown in FIG. 14 and waits for the next operation.

FIG. 8 shows the second soldering device of the FIG. 6 station. This device 80 includes a solder tank 81 in which a heater 83 is immersed.
A dip tank 82 that is raised and lowered by a cylinder 82a is provided inside the tank 82, and the tip of the shielded wire 5 is dipped into the solder pumped up from the tank 81 as shown in FIG. . Incidentally, in FIGS. 14 and 15, the solder attached to the core and shield wire is indicated by 84.

The above-described exemplary terminal processing device A is capable of automatically processing up to five coaxial cables, including transport between stage bonds, by simultaneously performing work at the second to sixth stations. The only thing that requires human labor is setting the cable at the first station and removing the cable after processing.

In addition, the first to sixth station stations are installed along a straight track (outbound path), and at least seven transport tables are provided that hold one cable and move while stopping at each stage. The object of the present invention can also be achieved by using a conveying device that returns the remaining conveying table after passing the sixth station to the first station while the table is stopped at each station. be able to.

〔effect〕

As described above, in this invention, the first to sixth stations are provided along the endless trajectory, and the coaxial cable set horizontally on the table of the conveyance device is moved and stopped together with the conveyance table at the first station, and the coaxial cable is moved and stopped along the conveyance table. The terminal processing equipment of the 2nd to 6th station will process all the work from stripping the terminal to soldering to the core and the shield wire after sorting (excluding initial clamping of the cable and removal after processing). ), so
The efficiency of processing the terminals of ultra-fine coaxial cables, which was extremely inefficient in the past, has been dramatically improved.

In addition, full automation eliminates the unavoidable variations in machining accuracy when done manually, resulting in stable quality and improved reliability of the terminal.

Other benefits include a reduction in the number of defective products due to stable quality, and a reduction in processing costs through mass production, which can contribute to lowering product prices.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an outline of an embodiment of the present invention, FIG. 2(a) is a schematic plan view of the conveying device, FIG. a) is a plan view of the first station, FIG.
a) is a plan view of the first peeling device, FIG. 5(b) is a side view of the same as above, FIG. A diagram showing
The same figure (C) is a plan view of the claw of the rotary chuck, and Fig. 6 (a)
7(b) is a side view showing an outline of the same as above; FIG. 7(a) is a side view showing an outline of the first soldering device; FIG. is a partially broken enlarged front view of the main part same as above, the same figure (C) is also a partially broken side view of the main part, FIG. is a diagram showing the work operation after the second station,
FIG. 16 is a diagram showing a state in which the end of the coaxial cable is stripped. A...Terminal processing device, 10...Transfer device, 11...Turntable, 12...Clamp, 20...Control panel, 30...Positioning device, 40...First skin stripping device, 41...Outer sheath stripping blade, 42...Inner sheath stripping blade, 50... ...shield wire sorting device, 51
...Centering chuck, 52...
Core clamp, 53... Air nozzle, 54... Rotating chuck, 60... Second peeling device, 61... Inner jacket cutting blade, 62 ... Core extra length cutting blade, 63 ... Tear-off chuck, 7
0... First soldering device, 71... Soldering iron, 72... Solder supply device, 76... Flux tank, 77... ...Deep tank, 80...Second soldering device, 81...Solder tank, 82...
...Deep tank.

Claims (3)

[Claims] (1) The first to sixth stations are installed in sequence along an endless track, and the transport table, which is provided with horizontal holding means for the coaxial cable at a position corresponding to each station, is stopped at each station along the track. Further, the first station is provided with a positioning device for the coaxial cable that is supplied to the horizontal holding means of the transfer table, and the second station is provided with a positioning device for simultaneously stripping the outer and inner sheaths of the ends of the coaxial cable. A first stripping device is installed at the third station, which grabs the exposed core of the cable after passing through the second station, and uses the air jetted from the nozzle to remove the core and the inner sheath. The fourth station is equipped with a shield sorting device that sorts the exposed shield wires vertically downward, grabs the sorted shield wires with a rotating chuck, and twists them all together.The fourth station is equipped with a blade that cuts off the excess length of the exposed core and simultaneously closes the wires at right angles to the cable axis. A second skin stripping device is installed at the fifth station, which makes a cut at a predetermined position on the exposed inner sheath, and the remaining length of the inner sheath in front of the cut is grasped and torn off with a chuck that moves back and forth in the longitudinal direction of the cable. At the 6th station, the first soldering device, which immerses the shielded wire after bundle-twisting into a flux bath, is placed in the sixth station. A coaxial cable terminal processing device comprising a second soldering device for attaching solder to the tip of each coaxial cable. (2) The coaxial cable terminal processing device according to claim (1), wherein the nozzle of the third station is made to reciprocate once over the exposed shielded wire while blowing out air. (3) Claim (1) in which the rotating chuck at the third station loosely grips the base of the distributed shield wires at the ascending point and then descends while rotating to collect and twist the shield wires. Or the coaxial cable terminal processing device described in (2).