JPH01177810A - Method and apparatus for process of end of shielded wire - Google Patents

Abstract

PURPOSE:To easily and effectively isolate a shielding layer from a core conductor, and to process it in a preferable shape by brushing only the end of the exposed layer. CONSTITUTION:The end of an isolated skin 4 is removed, and a shielding layer 3 made of many fine conductors 3a is exposed. Then, only the ends of the fine conductors 3a of the layer 3 are brushed perpendicularly from both sides, and bent substantially perpendicularly to a core conductor 2. Thereafter, the exposed base of the layer 3 is horizontally brushed, and the conductors 3a of the layer are divided into two groups at both sides of the conductor 2. Further, the fine conductor groups of the layer 3 are held from both sides to be perpendicularly brushed, and substantially perpendicularly bent to the conductor 2 while pulling and aligning the whole fine conductors of the layer 3.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an end treatment method and device for treating the end portion of a shielded wire used in audio equipment, etc. The present invention relates to a shield wire terminal processing method and apparatus for separating a shield layer consisting of a large number of thin wires from a core wire.

(Prior Art) In recent years, with the spread of high-performance audio equipment, the demand for shielded wires with less noise has increased significantly. This shielded wire has one or more insulated core wires covered with a shield layer made of a large number of fine mild steel wires, and further covered with an outer skin made of an insulating material. If such a shielded wire is used, for example, by grounding the shield layer, it is possible to prevent external noise from entering the signal flowing through the internal core wire.
It is possible to transmit signals with less noise.

By the way, in order to connect such a shielded wire to each device, it is necessary to expose the terminal portion of the core wire. That is, after removing the outer sheath end portion of the shielded wire, it is necessary to perform terminal processing such as separating the exposed thin wires of the shielding layer, and then removing the insulation coating of the core wire to expose the core wire body. In that case, if even one of the thin wires forming the shield layer comes into contact with the exposed portion of the core wire, there is a risk that a short circuit or the like may occur when connected to a device. Therefore, it is necessary to reliably separate the thin wires of the shield layer from the core wires. Furthermore, since the shield layer is also connected to a ground terminal or the like, it is necessary to ensure that the large number of thin wires forming the shield layer can be grouped together without scattering.

Conventionally, such terminal processing of shielded wires has been performed manually. However, since the shield layer of a shield wire is generally made of a large number of fine mild steel wires wound spirally around a core wire, the work of separating all the fine wires of the shield layer from the core wire is particularly complicated. , which was extremely time-consuming.

For this reason, a shielded wire terminal processing device as shown in Japanese Patent Publication No. 59-42523 has been developed. This terminal processing device extracts the outer sheath end of the shield wire to expose the shield layer, brushes the exposed shield layer to break up the many thin wires that make up the shield layer, and then blows gas. This separates the thin wire from the core wire, and further, by brushing the shield wire in a direction perpendicular to the axis of the shield wire, the thin wire of the shield layer is bent while being aligned.

By using such a device, when the shield wire has only one core wire, it becomes possible to efficiently process the end of the shield wire.

(Problem to be Solved by the Invention) However, in the case of a shielded wire having multiple core wires, the thin wires of the shield layer penetrate between the core wires, so the thin wires can be separated from the core wires by blowing gas. I can't do it. Therefore, when a shielded wire having multiple core wires is terminal-treated using the above-mentioned terminal processing device, even when the insulation coating of the core wire is removed, the thin wires of the shield layer that are inserted between the core wires are removed. There is a risk that the thin wires of the shield layer may be mixed into the thin wires of the exposed core wire.

In addition, in such terminal processing equipment, brushing must be performed with considerable force in order to spread the thin wires that make up the shield layer, so when brushing,
It is necessary to fixedly support not only the base side of the shield wire but also the tip side. For this purpose, the outer sheath and shield layer of the shield wire must be cut and removed in advance by an amount that can be gripped on the tip side, so that only the core wire protrudes. Therefore, it is necessary to use a shield wire that is as long as the length of the wire to be gripped, which is wasteful.

The present invention has been made in view of such problems, and its main purpose is to reliably separate the thin wires forming the shield layer from the core wires even if the shield wire has a plurality of core wires. An object of the present invention is to obtain a shielded wire terminal processing method and apparatus that can perform the following steps.

Another object of the present invention is to utilize shielded wires that have been cut to a predetermined length in advance without waste, and to process the ends of the shielded wires.

(Means for solving the problem) In order to achieve this object, in the method of the present invention, the outer sheath of the shielded wire is cut at a predetermined length position from the tip, and the cut-off terminal part of the outer sheath is extracted. After exposing the end of the shield layer, brush only the tip of the exposed shield layer, bend the thin wire at the tip almost perpendicular to the core wire, and then By brushing the base in a horizontal direction perpendicular to the bending direction of the tip, the thin wires forming the shield layer are divided into two groups on both sides of the 7-core wire, and the thin wire groups are further sandwiched from both sides. By brushing in the vertical direction, the entire thin lines of the shield layer are aligned and bent in the vertical direction.

Further, the terminal processing device for carrying out the method includes: a sheath extraction device that extracts the terminal portion of the sheath; a first shield layer separation device that bends only the tips of the thin wires of the exposed shield layer downward by brushing; A second shield layer separating device horizontally brushes the upper surface of the base of the shield layer, and the thin wires of the shield layer, which are divided into two groups on both sides of the core wire by the brushing, are held from both sides and brushed downward. The present invention is characterized in that the third shield layer separating device is installed in sequence at equal intervals, and that each of these devices is provided with a conveying device that sequentially conveys the shield wire to be processed.

The sheath removal device according to the present invention includes a clamp mechanism that grips the tip of the end portion of the cut off sheath, a rotation mechanism that rotates the clamp mechanism around the axis of the shield wire, and a rotation mechanism that rotates the clamp mechanism around the axis of the shield wire. It is equipped with a slide mechanism for moving in the direction.

Furthermore, the shield layer separation device that bends only the tip of the thin wire of the shield layer has a rotating brush that brushes the exposed tip of the shield layer downward from both sides, and a swinging brush that brushes the tip in the axial direction of the shield wire. Equipped with a brush.

(Function) With this configuration, only the tips of the thin wires of the shield layer exposed after the outer skin is removed are bent by brushing. In that case, even if the thin wire is twisted in a spiral around the core wire, the tip easily unravels, so just brush it with a relatively small force.
The tip of the thin wire can be separated from the core wire.

Therefore, there is no need to hold the tip of the shield wire, and there is no need to make the tip of the core wire protrude in advance.

In addition, by bending the tips of the thin wires in the shield layer almost perpendicularly to the core wires, the tips intersect with the core wires, so that when brushing in the next horizontal direction, all the thin wires are bent to one side. They will no longer gather together, but will be divided almost equally on both sides of the core wire. Therefore, when the entire thin wire is aligned and bent in the vertical direction, the bent portion of the exposed base will not bulge out. Furthermore, as the thin wire at the tip of the shield layer is bent, the tip of the coated core wire will be exposed, so when brushing in the next horizontal direction, grasp the tip of the core wire as necessary. You can also do that. Therefore, the brushing can be performed with strong force.

By performing brushing in the horizontal direction perpendicular to the axis of the shield wire in this way, even when there are a plurality of core wires, fine wires that have fallen between the core wires can be separated.

When folding the tips of the thin wires in the shield layer, if you brush the bottom side of the shield wire in the axial direction and then brush the top side horizontally, the separation of such thin wires will be more secure. will be carried out.

In addition, when removing the outer skin terminal part, if you rotate it in the opposite direction to the twisting direction of the shield layer fine wires, the fine wires will be untwisted and loosened, making the subsequent process smoother. will be carried out.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

In the drawings, FIG. 1 is a perspective view sequentially showing the state of the terminal portion of a shielded wire that is processed according to an embodiment of the terminal processing method according to the present invention.

As is clear from FIG. 1(A), in this embodiment, the shielded wire 1 to be processed has two core wires 2, 2. Each core wire 2 is made of a core wire main body 2a made of a large number of thin metal wires with an insulating coating 2b applied to the outer periphery thereof, and is loosely twisted together. A large number of thin annealed copper wires 3a are arranged around the outer periphery of these core wires 2.

3a, . . . are wound spirally, and a shield layer 3 is formed by the thin wires 3a, 3a, . covered by.

When processing the terminal part of such a shielded wire 1,
The shield wire 1 is cut to a predetermined length in advance. First, the outer sheath 4 of the shielded wire 1 is cut at a predetermined length position from the tip, and as shown in FIG. 1(B), the end portion 4a of the cut off outer sheath 4 is is pulled out until it protrudes from the tips of the core wire 2 and shield layer 3 by a predetermined length.

Next, grasp the tip protrusion of the outer skin end portion 4a,
While rotating the shield layer 3 in a direction opposite to the twisting direction of the thin wires 3a, the outer skin end portion 4a is pulled out. As a result, the terminal portion of the shield layer 3 is exposed as shown in FIG. 1(C,). At this time, the shield layer thin wires 3a are untwisted by the rotation of the outer skin end portion 4a, so that the thin wires 3a are in an unraveled state as shown in the figure.

In this state, the tip of the shield layer 3 is pinched from both sides and brushed downward. Further, the lower surface of the tip of the shield layer 3 is brushed in the axial direction from the tip toward the base. As a result, only the tip portions of the thin shield layer wires 3a are bent downward, as shown in FIG. 1(D). Then, the thin wires 3a at the bent ends are somewhat entangled. At this time, the shield layer thin wire 3a that has entered between the core wires 2.2 remains on the upper surface side of the core wires 2.2.

Therefore, the upper surface of the exposed base of the shield layer 3 is brushed horizontally toward the front in the figure. Then, the shield layer thin wire 3a that had entered between the core wires 2°2 is pulled out, and at the same time, the thin wire 3a that was located on the front side of the core wire 2 is pulled out.
.

3a, . . . are bent toward the front. As a result, all the shield layer thin wires 3a, 3a, . . .
As shown in E), the core wire 2 is divided almost equally between the left and right sides.

Furthermore, the shield layer thin wires 3a divided into two groups in this way
, 3a, ... from both sides and brush downward. Thereby, the thin line 3a
, 3a, . . . are bent almost vertically downward and aligned, as shown in FIG. 1(F).

Next, the thin lines 3a, 3a, . . . are shown in FIG. 1(G).
Twist as shown. In this way, the thin wire 3a forming the shield layer 3 is completely separated from the core wire 2,
It can be summarized.

Once this state is reached, subsequent processing can be performed in the same manner as before. That is, a terminal may be attached to the exposed core body 2a by removing the tip end of the insulation coating 2b of the core wire 2, and terminals may also be attached to the group of thin wires forming the shield layer 3.

FIG. 2 is a schematic plan view of a terminal processing device that implements such a method.

As is clear from this figure, this terminal processing device includes a skin removal device 11, a first shield layer separation device 12, and a second shield layer separation device, which are installed in order from the left side at equal intervals on the base 10. 13, a third shield layer separating device 14, and a twisting device 15. On the side where these devices 11 to 15 face each other, each device 1
A conveying device 16 is provided which sequentially conveys the shield wires 1 to 15 to be processed. On the left side of the conveyance device 16,
Loading table 1 for setting shielded wire 1 to be processed
7 is provided. Moreover, on the right side of the conveyance device 16,
A pedestal 18 is provided to receive the processed shield wire 1.

The loading table 17 is loaded with a conventional device as shown in Fig. 1 (B).
) The shielded wire 1 processed to the state shown in FIG. The shield wire 1 is transported by the transport device 16 to a position facing the sheath removal device 11 while maintaining its state. In the sheath extraction device 11, the sheath end portion 4a of the shielded wire 1 is extracted, as shown in FIG.
) to state (C).

Next, the shield wire 1 is transferred to the first
The shield layer separating device 12 is transported to a position opposite to the shield layer separating device 12. In this separation device 12, the tip of the shield layer 3 is brushed and processed from the state shown in FIG. 1(C) to the state shown in FIG. 1(D). Then, it is transported to a position facing the second shield layer separation device 13, and is brushed horizontally on the upper surface of the exposed base of the shield N3, as shown in FIG. 1(I).
) to state (E).

Further, the shield wire 1 is connected to a third shield layer separating device 14.
is transported to a position opposite to the separation device 14, and
The shield layer 3 is brushed downward while being sandwiched from both sides. As a result, the state shown in FIG. 1(E) is processed from the state shown in FIG. 1 to the state shown in FIG. 1(F). Next, the shield layer thin wires 3a, 3a, . It is processed.

The shielded wire 1 treated in this way is finally conveyed to the pedestal 18 and discharged there. A terminal is attached to the shielded wire 1 by a conventionally known terminal attaching device provided separately.

FIG. 3.4 shows the specific structure of the conveyance device 16, and FIG. 3 is a cutaway side view showing the overall structure.
FIG. 4 is an enlarged vertical sectional view of the main part.

As is clear from FIG. 3, this conveying device 16 includes a guide rail 20 fixed on the base 10 of the terminal processing device.
A slide table 21 is slidably supported along the guide rail 20, and an elevating table 22 is supported by the slide table 21 so as to be vertically movable. The guide rail 20 is installed parallel to the transport direction, that is, in the left-right direction in FIG. The slide stand 21 is supported by its guide rail 20 via a slide bearing 23, and is reciprocated in the horizontal direction by an air cylinder 24 for forward and backward movement installed on the base 10. The reciprocating stroke is equal to the spacing between each device 11-15.

The lifting platform 22 is long and extends in the conveyance direction.
Slide bearings 25 provided on both sides of the slide table 21 allow it to move up and down while maintaining a horizontal state. A lift air cylinder 26 is provided in the center of the slide table 21 in the vertical direction, and the lift table 22 is moved up and down by the air cylinder 26. The air cylinder 26 operates in two stages, and is configured to temporarily stop at an intermediate position when the lifting platform 22 is raised or lowered.

On the upper surface of the lifting table 22, six chucks 27, 27. ...
is provided. As shown in FIG. 4, each chuck 27 includes a pair of claws 29, 29 whose intermediate portions are swingably supported by the bin 28. That claw 29
A coil spring 30 is attached under tension between the lower ends of the claws 29 and 29, and the upper ends of the claws 29 and 29 are always biased in the direction of opening. Further, a cam 32 is provided below the claws 29 and 29, and is moved up and down by an air cylinder 31 for opening and closing.
9. By pressing the lower end of 29, the spring 3
The upper end side of the claw 29.29 is closed against the zero pressure.

In this conveying device 16, when the forward and backward movement air cylinder 24 is in the most contracted state, the leftmost chuck 27 is located at the loading table 17, and the other chucks are 27, 27. ... are installed so as to be located opposite to each of the devices 11 to 15, respectively.

In the initial position, the air cylinders 24 and 26 are contracted as shown in FIG.
9.29 is held open.

The shield wire 1 to be processed is placed on the loading table 17.
The part of the outer skin 4 that is closer to the base than the cutting position is the chuck 2
7, and is set in a horizontal state substantially perpendicular to the opening/closing direction of the claws 29 and 29. When transporting the shield wire 1, from this state, the lifting air cylinder 26 is first activated, and the lifting platform 22 is pushed upward. The ascent is temporarily stopped at an intermediate position. At that time, the air cylinder 31 for opening and closing the chuck 27 is operated, and the claws 29 and 29 are closed. Thereby, the shield wire 1 is gripped.

Next, the lifting air cylinder 26 is operated again, and the lifting platform 22 is further raised. Therefore, the shield wire 1 is lifted. When the air cylinder 26 reaches the stroke end, the forward and backward movement air cylinder 24 is activated.
The slide table 21 and the lifting table 22 are moved rightward in the figure. As a result, the chuck 2 holding the shield wire 1
7 moves to a position opposite to the adjacent skin removing device 11. Then, when the lifting table 22 descends and stops at an intermediate position, the claws 29 and 29 of the chuck 27 are opened. In this way, the shield wire 1 is separated and transferred to the sheath removal device 11.

The chuck 27, which has released the shield wire 1, is further lowered as the lifting table 22 is lowered, and when it is in the lowest position, the slide table 21 is moved to the left, so that the chuck 27 is returned to the position facing the loading table 17 again. It will be done.

By repeating such operations, the shield wire 1 supported by the sheath removal device 11 is gripped by the next chuck 27 and sent to the adjacent first shield layer separation device 12, and at the same time, a new shield wire 1 is A shielded wire 1 is sent to a sheath removal device 11. In this way, the shielded wire 1 is sequentially conveyed to each of the devices 11 to 15.

During this time, the shield wire 1 is kept in a horizontal state in a fixed direction.

5.6 shows the specific structure of the skin extracting device 11, FIG. 5 is a side view of the entire device, and FIG. 6 is an enlarged plan view of the main parts thereof.

As is clear from FIG. 5, this skin removal device 11
is the shield wire 1 transported by the transport device 16
a support mechanism 40 that receives and fixedly supports the shield wire 1, a clamp mechanism 41 that grips the tip of the shield wire 1, a rotation mechanism 42 that rotates the clamp mechanism 41 around the axis of the shield wire 1, and these clamps. A slide mechanism 43 that moves the mechanism 41 and the rotation mechanism 42 in the axial direction of the shield wire 1 is provided.

The support mechanism 40 includes a column 44 erected on the base 10 of the terminal processing device, a pedestal 45 attached to the upper end of the column 44 and open at the top, and a pedestal 45 that is supported by the column 44 and located above the pedestal 45. and an air cylinder 46 that presses down the shield wire 1. As shown in FIG. 1(B), the shield wire 1
It is in a state in which the terminal portion 4a is slightly pulled out. The pedestal 45 supports the shielded wire 1 with the cut portion of the outer cover 4 protruding toward the clamp mechanism 41 side. Therefore, the shield wire 1 is clamped and fixedly supported between the pedestal 45 and the air cylinder 46 on the base side of the cutting position of the outer cover 4.

As shown in FIG. 6, the clamp mechanism 41 includes a slide shaft 48, which is installed on the axis of the shield wire 1, and is reciprocated in the axial direction by an air cylinder 47 via a rotary joint 48a. A base plate 49 slidably supported on the slide shaft 48, a pair of arms 51.51 whose bases are rotatably supported by bins 50.50 on both sides of the base plate 49, and the arms. 51.5
1 and a pair of links 52 and 52 connecting the middle part of the slide shaft 48 and the tip of the slide shaft 48. Therefore, by reciprocating the slide shaft 48, the arms 51, 51 are opened and closed. Arm 5
1.51 is provided with claws 53.53 for pinching the protruding portion of the outer sheath end portion 4a of the shielded wire 1 that protrudes from the shield layer 3 and the core wire 2 from both sides. Further, at the tips of the claws 53 and 53, there is a guide plate 54 that engages from both sides with the exposed portion of the shield layer 3 after the outer sheath 4 of the shield wire l is cut off, and guides the outer sheath end portion 4a.
．． 54 is attached.

The rotation mechanism 42 for rotating the clamp mechanism 41 includes a rotation shaft 55 whose one end is fixed to the base plate 49, a pulley 56 fixed to the other end of the rotation shaft 55, and a pulley 56 fixed to the other end of the rotation shaft 55.
6 and a belt 58 that transmits the rotation of the motor 57. The rotary shaft 55 is a hollow shaft, and the slide shaft 48 is slidably fitted inside the rotary shaft 55.

The rotating shaft 55 is connected to the frame 6 through a bearing 59.
It is rotatably supported by 0. That frame 6
A motor 57 and an air cylinder 47 of the clamp mechanism 41 are also supported by o. The motor 57 is configured such that its rotation direction and rotation speed are controllable.

A frame 60 supporting the clamp mechanism 41 and the rotation mechanism 42 is connected to a guide rail 6 provided on a support base 61.
2.62, it is supported movably in the axial direction of the shield wire 1. The frame 60 is moved back and forth by an air cylinder 63 attached to a support base 61. That is, the frame 6o, the guide rail 62 of the support base 61, and the air cylinder 63 constitute a slide mechanism 43 that moves the clamp mechanism 41 in the axial direction of the shield wire 1.

Further, the axial position of the support base 61 is adjusted by a feed screw mechanism 64.

Next, the operation of the skin removing device 11 configured as described above will be explained.

As mentioned above, the incoming shield wire 1 is shown in Figure 1 (B
) has been processed to the state of The shield wire 1 is
The receiver is conveyed by the conveying device 16 through between the deflated air cylinder 46 and the pedestal 45, and then the chuck 27 is lowered and opened, so that the pedestal is stopped and supported by the pedestal 45. When the air cylinder 46 operates, it is held and fixedly supported between the tip of the air cylinder 46 and the pedestal 45.

At this time, the slide shaft 48 of the clamp mechanism 41 is pushed out toward the shield wire 1 side, and the arm 51.5
1 is open. In this state, the air cylinder 47 is activated and the slide shaft 48 is retracted. Then, the arm 51.51 closes via the link 52.52, and the claw 53 closes.
53, the tip protrusion of the outer sheath end portion 4a of the shield wire 1 is gripped from both sides. At the same time, the guide plates 54 54 engage with the exposed portions of the shield layer 3 .

Next, the motor 57 of the rotation mechanism 42 and the slide mechanism 4
No. 3 air cylinder 63 is activated. When the motor 57 operates, the rotating shaft 55 is
rotates, and the base plate 49 fixed to the rotating shaft 55 rotates. Therefore, the arm 51.51 rotates around the axis of the shield wire 1, and the outer skin end portion 4a gripped by the claw 53.53 is rotated relative to the rest of the shield wire 1. At this time, the slide shaft 48 also rotates via the link 52, but the rotation is absorbed by the rotary joint 48a.

At the same time, by operating the air cylinder 63, the frame 6o moves in a direction away from the shield wire 1, and the entire clamp mechanism 41 and rotation mechanism 42 move in the same direction. As a result, the claw 53.53 at the tip of the arm 51.51
The outer sheath end portion 4a held by the guide plates 54 and 54 is pulled out from the rest of the shield wire 1.

In this way, the outer sheath terminal part of the shield wire 1 -48
is extracted while being rotated around its axis.

At this time, the rotation direction and rotation speed of the shield wire 1 can be adjusted by adjusting the rotation direction and rotation speed of the motor 57.
The direction is opposite to the twisting direction of the thin wires 3a, 3a, = forming the shield layer 3, and corresponds to the twisting pitch thereof.

As a result, when the outer skin end portion 4a is removed, the shield N4a is untwisted, and the thin wires 3a, 3a, . . .
・is in an unraveled state as shown in FIG. 1(C).

When processing different shield wires 1, the rotation direction and rotation speed of the motor 57 are adjusted according to the twist direction and twist pitch of the shield layer 3. Further, the position of the support base 61 is adjusted by the feed screw mechanism 64 according to the length of the outer skin end portion 4a to be extracted, and the initial position of the clamp mechanism 41 is adjusted. Therefore, this skin removal device 1
1 can process various shield wires 1.

When the removal of the outer skin end portion 4a is completed, the support mechanism 40
air cylinder 46 contracts. And the conveyance device 16
When the chuck 27 rises and closes, the processed shield wire 1 is gripped and lifted from the pedestal 45, and passed between the air cylinder 46 and the pedestal 45 to perform the next step of separating the first shield layer. is sent to device 12. During this time, the clamp mechanism 41 and slide mechanism 43 are returned to their initial states. The removed outer skin end portion 4a is dropped by opening the arms 51, 51 of the clamp mechanism 41.

7 to 9 show the specific structure of the first shield layer separation device 12, with FIG. 7 being a side view of the entire structure, and FIGS. 8 and 9 being a front view of the main parts thereof.

As is clear from FIG. 7, this shield layer separation device 1
Reference numeral 2 denotes a support mechanism 70 that receives and fixedly supports the shielded wire 1 conveyed by the conveyance device 16, a rotating brush 71 71 that brushes the tip of the shielded wire 1 from both sides, and the shielded wire. 1 is provided with a swinging brush 72 that brushes the lower surface side of the tip.

The support mechanism 70 is the support mechanism 40 of the skin removal device 11.
Similarly, a column 73 erected on the base 10, a pedestal 74 attached to the upper end of the column 73, and a column 73
The shield wire 1 is supported by an air cylinder 75 that presses the shield wire 1 from above the pedestal 74.

As shown in FIG. 1(C), the shield wire 1 is
The terminal parts of the shield layer 3 are exposed, and the thin wires 3a, 3a are exposed.
,... is said to be in a relaxed state. The pedestal 74 supports the exposed portion of the shield layer 3 with only the tip of the shield wire 1 slightly protruding. Therefore, the shield wire 1 is held between the pedestal 74 and the air cylinder 75 at a position slightly closer to the base than the tip thereof, and is fixedly supported.

As shown in FIG. 8, in the initial state, the rotating brushes 71, 71 are positioned apart on both sides above the tip protrusion of the shielded wire 1 supported on the pedestal 74. . As is clear from FIGS. 7 and 9, each rotating brush 7
1 extends parallel to the axis of the shield wire 1 and has a swing lever 7.
6 is fixed to the tip of a rotating shaft 77 that is rotatably supported at the tip of the rotary shaft 77. The base of the swing lever 76 is rotatably supported by a frame 78. Furthermore, a pinion 79 is fixed to the base of the swing lever 76 and is centered around the pivot axis. And each and nion 79
．． 79 is engaged with a common vertical rack 80. The rack 80 is raised and lowered by an air cylinder 81 attached to the frame 78.

At the top of the frame 78, there is a pair of gears 8 that mesh with each other.
2.82 is rotatably supported. These gears 8
2.82 is rotatably driven by a motor 83. The rotation of the gears 82.82 is transmitted to the rotating shaft 77.77 via the belt 84.84, and the rotating brushes 71.71 are driven to rotate in opposite directions.

The frame 78 includes a support stand 85 installed on the base 10.
It is supported vertically movably by guide rails 86 and 86. Then, it is reciprocated in the vertical direction by a lifting air cylinder 87 attached to the support base 85. Therefore, this air cylinder 87
By operating the rotary brush 71, the rotating brush 71 moves up and down. That is, the rotating brush 71 is moved by the air cylinder 87, the guide rail 86 of the support base 85, and the frame 78.
A lifting mechanism is configured to raise and lower the.

On the other hand, the swinging brush 72 is supported vertically movably along a guide rail 88 provided on a support column 73 of the support mechanism 70, and is attached to a frame 90 that is raised and lowered by an air cylinder 89 relative to the axis of the shield wire 1. It is swingably supported by a vertical horizontal bin 91. A spring 92 is stretched between the lower end of the swinging brush 72 and the frame 90,
The brush 72 is always biased in the direction of rotation clockwise in FIG. 7. Further, an air cylinder 93 is attached to the frame 90 to press the lower part of the swinging brush 72 than the horizontal bin 91, and the swinging brush 72 is rotated counterclockwise by the operation of the air cylinder 93. ing.

Further, behind the swinging brush 72, the shield wire 1 is placed slightly below the height position facing the end surface of the shield wire l.
A horizontal rod 94 is provided which extends perpendicularly to the axis of the . This horizontal rod 94 is moved in the axial direction of the shield wire 1 by an air cylinder 95 attached to the support stand 85.

Next, the operation of the first shield layer separation device 12 configured as described above will be explained.

The shield wire 1 that has been processed to the state shown in FIG.
It is clamped and fixedly supported by the air cylinder 75 and the air cylinder 75. In this state, the motor 83 and air cylinder 81
．． 87 is activated.

When the motor 83 operates, the gears 8 meshing with each other
2.82 rotate in opposite directions, and the rotation is transmitted to the rotating shafts 77.77 via belts 84.84, respectively. Therefore, the rotating brushes 71, 71 each rotate from above toward the center as indicated by the arrows in FIG. In addition, due to the operation of the air cylinder 81,
Rack 80 is lowered. Then, the binions 79, 79 engaged with the rack 8o rotate in opposite directions, and the swing levers 76, 76 fixed to the binions 79, 79 are rotated in the direction toward each other. As a result, the rotating brushes 71.71 move closer together. Furthermore,
These rotating brushes 71 are rotated by the operation of the air cylinder 87.
The frame 78 that supports the entire rotational drive mechanism is lowered.

In this way, the rotating brushes 71, 71 approach each other while rotating in opposite directions and further descend. As a result, the tip of the shield wire 1 is pinched from both sides by the rotating brushes 71.degree. 71, as shown by imaginary lines in FIG. 8, and is brushed downward. Thereby, the thin wires 3a, 3a forming the shield M3 of the shield wire 1.

The unraveled tips of ... are divided into both sides of the core wires 2, 2, and are bent downward.

When the rotating brush 71 moves below the shield wire 1,
Next, the air cylinders 89, 93 on the swinging brush 72 side are activated. When the air cylinder 89 operates, the swinging brush 7
2 reciprocates up and down. Further, when the air cylinder 93 operates, the swinging brush 72 rotates counterclockwise in FIG. 7. When the operation of the air cylinder 93 is stopped, the swinging brush 72 returns to its original state due to the biasing force of the spring 92. Therefore, by intermittently operating the air cylinder 93, the swinging brush 72
The shield wire 1 swings back and forth around the wire 1, and the lower surface of the tip of the shield wire 1 is brushed in the axial direction. If the swinging brush 72 is returned to the lowered position, the brushing will always be performed from the tip of the shielded wire 1 to the base, and the thin wire 3a at the tip of the shielded wire 1, 3a,
... is bent downward. At this time, core wires 2, 2
The thin wire 3a that had entered the lower surface side between the two is also drawn up.

In this way, by brushing with the rotating brush 71 and the swinging brush 72, the thin wire 3a is located on both sides and the lower surface side of the core wire 2.2 of the shield wire 1.

The tips of 3a, . . . are bent downward. At this time, the shield wire 1 is fixedly supported near the tip,
Since the portion protruding from the pedestal 74 is short, the core wire 2 in that portion has sufficiently high rigidity. Also, the thin wire 3a at the tip of the shield wire 1.

3a, . . . are sufficiently loosened and can be easily bent. Therefore, the brushing can be performed with a small force, and the core wire 2 will not be bent by the brushing.

When such brushing is completed, the rotating brush 71 and the swinging brush 72 are held at the lowered position. Then, the air cylinder 95 is operated, and the horizontal rod 94 is moved toward the support mechanism 70 side. Then, the horizontal rod 94 bends in the direction perpendicular to the thin wire 3.
a, 3a, ..., and the thin wires 3a, 3
a, . . . are pressed in the axial direction of the shield wire 1 and further bent. In this way, the thin lines 3a, 3a,...
The tip end portion of * is bent substantially perpendicularly downward to the core wires 2, 2.

When the tip of the shield layer thin wire 3a is finished bending,
The shield wire 1 is in the state shown in FIG. 1(D). Then, the air cylinder 75 of the support mechanism 70 contracts, and the processed shield wire 1 is transported by the transport device 16 to the second shield layer separation device 13 where the next step is performed. During this time, each mechanism of the first shield layer separation device 12 is returned to its initial state.

10.11 shows the specific structure of the second shield layer separation device 13, and FIG. 10 is a side view thereof,
FIG. 11 is a front view of the main part.

As is clear from FIG. 10, this shield layer separation device 13 includes a support mechanism 100 that receives and fixedly supports the shield wire 1 transported by the transport device 16, and a shield layer 3 of the shield wire 1. A horizontal brush 101 for brushing is provided. The support mechanism 100 is similar to the support mechanism 40 of the skin removal device 11. That is, the shield wire 1 is clamped and fixed between the air cylinder 102 and the pedestal 103 at the base side of the exposed portion of the shield N3.

As shown in FIG. 10.11, the horizontal brush 101 is supported along a vertical guide rail 105 provided on the frame 104 so as to be vertically movable.

It is then raised and lowered by an air cylinder 106 attached to the frame 104. Further, the frame 104 is slidably supported by a horizontal guide rail 107 extending in a direction perpendicular to the axis of the shield wire 1. The guide rail l○7 is the base 1
It is provided on the upper surface of a pillar-shaped support stand 108 installed on the top of the base.

The frame 104 is moved by a horizontal air cylinder 109 attached to a support stand 108.

The support stand 108 is configured to be able to adjust its position with respect to the axial direction of the shield wire 1 by means of a feed screw mechanism 110, so that the horizontal brush 101 passes over the upper surface of the exposed base of the shield layer 3 of the shield wire 1. It is like that.

In the second shield layer separation device 13 configured in this way, in the initial state, the horizontal brush 10 is
1 is located apart from and to the side of the support mechanism 100. In this state, the shield wire 1 processed to the state shown in FIG. 1(D) is transported and fixedly supported by the support mechanism 100. Then, the horizontal air cylinder 109 is activated.

When the air cylinder 109 operates, the frame 104 moves to the right in FIG. 11, and the brush 101 moves in the same direction accordingly. Therefore, the exposed base of the shielding layer 3 of the shielding wire 1 is brushed horizontally by its brush 101. When the brush 101 passes over the shield wire 1, the vertical air cylinder 106 is actuated to raise the brush 101, and after the brush 101 is returned to its original lateral position by the air cylinder 109, it is lowered. Then, the upper surface of the shield wire 1 is brushed horizontally again using the brush 101.

Repeat this action 2 to 3 times.

When the upper surface of the exposed base of the shield layer 3 of the shield wire 1 is brushed in this way, the thin shield layer wires 3a, 3a located on the right side of the core wire 2 of the shield wire 1 in FIG.
... is bent to the right. At that time, core wire 2
, 2, the thin wire 3a located on the upper surface side between the core wires 2, 2
It is pulled out from between and bent to the right in the same way. On the other hand, since the thin wire 3a located on the left side of the core wire 2 has its tip bent downward, it is blocked by the core wire 2 and does not move to the right. Further, the thin wires located on the lower surface side of the core wires 2, 2 are somewhat entangled with the thin wires 3a, 3a, .

In this way, the thin wire 3a forming the shield layer 3.

3a, . . . are almost equally divided into two groups on both sides of the core wire 2, resulting in a state as shown in FIG. 1(E).

During this time, the thin wires 3a, 3a, . It doesn't require a lot of force.

Further, since the shield wire 1 is supported near the exposed base of the shield layer 3, it has sufficient rigidity against brushing. Therefore, the core wire 2 will not bend. However, the thin wires 3a, 3a, .
If ... is not loosened sufficiently, it is necessary to brush with strong force. In such a case, the support mechanism 100 may be provided with another ramp mechanism similar to the air cylinder 102 and the pedestal 103, and the tips of the core wires 2, 2 may be clamped and fixed by the clamp mechanism. good.

The tip of the shield layer thin wire 3a is bent h, the core wire 2,
Since the tip of the shield wire 2 is exposed, even if the tip of the shield wire 1 is held in this way, separation of the shield layer 3 will not be hindered.

The shielded wire 1 thus processed to the state shown in FIG. 1(E) is then sent to the third shield layer separation device 14. This shield layer separation device 14 includes shield layer thin wires 3a, 3a, which are divided into two groups from both sides of the shield wire 1 by a pair of rotating brushes similar to the rotating brushes 71 and 71 of the first shield layer separation device 12. It brushes downward while squeezing... In this case, the brushing is done with considerable force. Therefore, a clamp mechanism is provided for gripping and fixedly supporting the tip end of the shield wire 1. Since the tip of the shield layer thin wire 3a is bent downward to expose the core wire 2, the tip of the shield wire 1 can be easily and reliably fixed.

Such a shield layer separation device 14 is similar to that conventionally used, and is disclosed in the above-mentioned Japanese Patent Publication No. 59-42523.
An example of this is also shown in the above publication, so a detailed explanation thereof will be omitted.

The shield layer thin wires 3a are divided into two groups by the third shield layer separation device 14.

3a, . . . are gathered again, aligned and bent downward. In this way, the state shown in FIG. 1(F) is reached. In this state, the exposed thin wires 3a, 3a, . . . of the shield layer 3 are completely separated from the core wires 2, 2.

All the thin wires 3a forming the shield layer 3 in this way.

3a, . . . are separated from the core wire 2 and aligned, they can be easily twisted together by hand. Furthermore, if a twisting device 15 is provided as shown in FIG. 2, the twisting can be performed automatically. The twisting device 15 has thin wires 3a that are aligned.
.

It consists of a mechanism that holds and rotates 3a,...
Any conventionally commonly used one may be used, and an example thereof is shown in the above-mentioned publication, so a detailed explanation will be omitted.

In this manner, by using these devices 11 to 15, it is possible to obtain the shielded wire 1 whose terminal portion has been processed to the state shown in FIG. 1(G).

In the above embodiment, when removing the outer skin end portion 4a, the end portion 4a is removed while rotating around the axis of the shield wire 1, but the shield layer thin wire 3a of the shield wire 1 is gently twisted. In such cases, such rotation is not necessarily necessary.

In such a case, the thin wire 3a at the tip of the shield layer 3 will be loosened just by pulling out the outer skin end portion 4a, and while the tip is bent and transported, the thin wire 3a will also be loosened at the exposed base of the shield layer 3. So, horizontal brush 10
1, the thin wire 3a can be easily separated.

In addition, in the above embodiment, the shielded wire 1 having two core wires 2.2 is processed, but such a terminal treatment method or device is suitable for processing a shielded wire having more core wires or a single core wire. It can also be applied to the case of a shielded wire having a core wire of

(Effects of the Invention) As is clear from the above description, according to the present invention, first, the outer sheath end portion of the shield wire is removed and only the exposed tip portion of the shield layer is brushed. The tip of the shield layer can be separated to expose the tip of the core wire without gripping and fixing the tip of the wire. In subsequent steps, the exposed tip of the core wire can be gripped and fixed, so brushing can be applied with strong force, and the shield layer can be reliably separated. Therefore, the shielded wire can be used without waste.

In addition, since the exposed base of the shield layer is then brushed in the horizontal direction perpendicular to the axis of the shield wire, even in the case of a shield wire with multiple core wires, the shield layer located between the core wires The thin wire is drawn out and becomes separated from the core wire. By brushing, the thin shield layer wires are divided almost equally on both sides of the core wire. Therefore, the next vertical brushing completely separates the shield layer thin wire from the core wire,
It is bent almost perpendicularly to the core wire and drawn in alignment. As a result, it becomes easy to twist the shield layer thin wires together. Moreover, at this time, no bulges are generated at the portions where the thin shield layer wire is divided into both sides.

In this way, even if the shield wire has a plurality of core wires, the shield layer can be easily and reliably separated from the core wire and processed into a good shape.

[Brief explanation of the drawing]

FIGS. 1(A) to (G) are perspective views showing the state of the terminal portion of a shielded wire processed by the method of the present invention in each step; FIG. 2 is a terminal processing apparatus for a shielded wire according to the present invention. A schematic plan view showing one embodiment; FIG. 3 is a cutaway side view of a conveying device used in the terminal processing device; FIG. 4 is an enlarged longitudinal sectional side view of a chuck portion of the conveying device; Figure 5 is a side view of the skin removal device in the terminal processing device, Figure 6 is an enlarged plan view showing the clamp mechanism of the skin removal device, and Figure 7 is the first shield layer separation in the terminal processing device. FIG. 8 is a side view of the device; FIG. 8 is a layout diagram of the brushes in the shield layer separation device as seen from the arrow ■ direction in FIG. 7; FIG. 9 is a drive mechanism for the rotating brush in the shield layer separation device. 10 is a side view of the second shield layer separation device in the terminal processing device, and FIG. 11 is a front view of the main parts of the shield layer separation device. 1... Shield wire 2... Core wire 3... Shield layer 3a... Shield layer fine wire 4... Outer cover
4a... Outer skin terminal portion 10... Base 11... Outer skin removal device 12... First shield layer separation device 13... Second shield layer separation device 14... Third shield layer Separation device 15...Twist device 16...Transport device 20
...Guide rail 21...Slide stand 22.
... Elevating table 24 ... Air cylinder (horizontal movement mechanism) 26 ... Air cylinder (elevating mechanism) 27 ... Chuck 40 ... Support mechanism 41 ... Clamp mechanism 42 ... Rotation mechanism 43. ...Slide mechanism 47...Air cylinder 48...Slide shaft 5
1...Arm 52...Link 55...
・Rotating shaft 57...Motor 6o...Frame 62...Guide rail 63...Air cylinder

Claims (12)

[Claims] (1) Cut the outer sheath of the shield wire at a predetermined length from the tip, pull out the end of the cut-off outer sheath, and expose the shield layer consisting of many thin wires. By brushing only the tip part vertically from both sides, the tip part is bent almost perpendicular to the core wire of the shielding wire, and then, the exposed base part of the shielding layer is brushed perpendicularly to the bending direction of the tip part. By brushing in the horizontal direction, the thin wires of the shield layer are divided into two groups on both sides of the core wire, and then by brushing in the vertical direction while sandwiching the thin wire groups of the shield layer from both sides. , a method for terminal processing of a shielded wire, which comprises bending the shield layer thin wire substantially perpendicularly to the core wire while aligning the entire thin wire of the shielding layer. (2) The shield wire end treatment method according to claim 1, wherein the outer sheath end portion is removed while being rotated in a direction opposite to the twisting direction of the shield layer thin wire. (3) The tip of the shield layer thin wire is bent by brushing in the vertical direction and brushing in the axial direction of the shield wire, as claimed in claim 1 or 2. The method of terminal treatment of the shielded wire described. (4) The shield wire according to claim 3, wherein the tip of the shield layer thin wire is bent by pressing in the axial direction of the shield wire with a horizontal rod after the brushing. terminal processing method. (5) The outer sheath has been cut at a predetermined length position from the tip, and the shield wire has been pulled out to a position where the end of the outer sheath slightly protrudes beyond the tip of the core wire, and the shield wire is pulled out to the base side of the outer sheath cutting position. a support mechanism that fixedly supports the tip of the outer skin end portion, a clamp mechanism that grips the protruding end portion of the outer skin end portion, a rotation mechanism that rotates the clamp mechanism around the axis of the shield wire, and a rotation mechanism that rotates the clamp mechanism around the axis of the shield wire. A sheath removal device for terminal processing of shielded wires, which is equipped with a slide mechanism for moving in the direction. (6) The skin removing device according to claim 5, wherein the rotating mechanism is capable of adjusting its rotational direction and rotational speed. (7) a support mechanism that fixes and supports a shielded wire whose terminal end portion has been removed to expose a shield layer made up of a large number of fine wires in a substantially horizontal state near the exposed tip; and said shielded wire. a rotating brush that rotates around an axis substantially parallel to the axis of the shield wire and brushes the thin shield layer wire at the tip of the shield wire protruding from the support mechanism from both sides; an elevating mechanism that raises and lowers the rotary brush; a swinging brush that swings around a horizontal axis substantially perpendicular to the axis of the shield, and brushes the thin shield layer wire on the lower surface side of the tip of the shield wire in the axial direction of the shield wire; Shield layer separation device for wire terminal treatment. (8) The shield layer separation device according to claim 7, wherein the swinging brush is lowered by a lifting mechanism as it swings. (9) A horizontal rod that is reciprocated in the axial direction of the shield wire and orthogonal to the bending direction is provided to further bend the thin shield layer wire that has been bent by the rotating brush and the oscillating brush. The shield layer separation device according to scope 7. (10) A sheath removal device that extracts the sheath from the terminal end of a shielded wire to expose a shield layer made up of a large number of thin wires, and a first shield layer separation device that bends only the tips of the exposed thin wires of the shield layer downward. and a second shield layer separating device that horizontally brushes the upper surface of the exposed base of the shield layer to divide the thin wires of the shield layer into two groups on both sides of the core wire, and the divided two groups of thin shield layer wires. a third shield layer separating device that brushes the shield layer downward while simultaneously holding it from both sides and aligning the thin wires of the shield layer; Bases are installed in order at equal intervals, and a conveyance device that sequentially conveys the shield wires to be processed in a horizontal state to these outer skin removal devices and the first, second, and third shield layer separation devices. A terminal processing device for shielded wires. (11) The shielded wire terminal processing device according to claim 10, further comprising a twisting device for twisting the shield layer fine wires drawn by the third shield layer separating device. (12) The conveyance device includes a chuck that is provided corresponding to the outer sheath removal device and the first, second, and third shield layer separation devices, respectively, and that can grip the shield wire to be processed; The shielded wire terminal processing device according to claim 10, comprising: a horizontal movement mechanism that reciprocates the distance between each device; and a lifting mechanism that lifts and lowers the chuck in two stages.