JPH06276639A - Shield processing device for cable - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a shield processing device that cuts only a shield net assembly without damaging a drain wire in a shield processing operation of an inner core wire of a round cable. [Structure] In the cross section of the cable, the movement of the shield net assembly 23 is restricted by the O-ring 5 having a smaller diameter than the outer diameter of the shield wire assembly 23 and an inner diameter larger than the outer diameter of the drain wire 24, so that the drain wire assembly 24 is prevented. Is inserted as it is. Thereby, the shield net set 23 and the drain wire 24 are stably separated. After that, when the drain wire detection sensor 6 detects the drain wire 24, the female blade 2 contacts the male blade 1,
This is cut in a state where the shield net assembly 23 is spread.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable shield processing device, and more particularly to a shield for cutting a shield braid by separating a shield braid of an inner core wire of a round cable used in an electronic computer or the like from a drain wire. Regarding a processing device.

[0002]

2. Description of the Related Art A round cable is one of wiring materials for electronic devices such as electronic calculators and communication devices. The round cable is a multi-core cable in which an external protective coating is provided with a coaxial wire or the like as a core, and for example, a 24-core input / output (I / O) cable 20 as shown in FIG. 7 is known. The I / O cable 20 has 24 inner core wires 21 which are collectively incorporated in an outer protective coating.

Each of the inner core wires 21 has an outer jacket (jacket) 22 and a shield braid 2 as shown in FIGS.
3, a drain wire 24, an insulator 25, and a central conductor 26, and has a coaxial structure surrounding the central conductor 26. The shield braid 23 is an outer conductor for electromagnetic shielding. The drain wire 24 is spirally wound around an insulator 25 having a circular cross section.

To use the round cable (I / O cable 20) having such a structure, the shield braid 23 is separated from the drain wire 24 at the tip of the inner core wire 21, and then the shield braid 23 is cut. Perform processing to At the time of this shield treatment, it is necessary to cut the shield braid 23 of the inner core wire, which has tended to be more and more thin in recent years from the viewpoint of resource saving and space saving, without damaging the drain wire 24 thereunder. To be done.

As shown in FIGS. 9 to 11, a conventional shield processing apparatus for a cable has a die 31 having a hole into which a round cable is inserted, and a shield clamp 32 for clamping the round cable. A cutter 33 for cutting a shield braid covering the drain wire, a stopper 34 inside the hollow of the cutter 33, and a sensor 35 for detecting the insertion of the round cable.

In this conventional shield processing device, first,
As shown in FIG. 9, the distal end portion of the inner core wire 21 from which the jacket is peeled off and the shield braid 23 is exposed is inserted into the hole of the die 31 and passes through the inside of the cylindrical cutter 33, and is projected to the stopper 34. Applied. When the insertion of this round cable is detected by the sensor 35, the shield clamp 32
After being closed, it is moved to the die 31 as it is.

When approaching the die 31 with the shield clamp 32 closed, as shown in FIG. 10, the shield braid 2
The part 23 between the die 31 and the shield clamp 32 of FIG.
a is pushed out and crushed. As a result, the stopper 3
The drain wire 24 is exposed at the tip of the cable in the vicinity of 4. In this state, as shown in FIG. 11, after the shield clamp 32 is opened, the cutter 33 is moved until it abuts against the die 31, and the crushed portion 23 of the shield braid 23 is moved.
a is cut.

[0008]

However, in the above-mentioned conventional shield processing apparatus, the shield braid 23 of the inner core wire 21 is used.
The drain wire 24 is separated from the drain wire 24 by the shield clamp 32 that presses the shield braid 23 toward the drain wire 24. Therefore, the separated state is unstable, and the separated state is not detected. 24 may be cut by the cutter 33. Further, in the conventional shield processing apparatus, there is also a problem that shield waste generated by cutting the cutter 33 may enter the apparatus sliding portion and cause malfunction.

The present invention has been made in view of the above points, and utilizes the fact that the diameters of the shield braid and the drain wire in the cross section of the inner core wire are different from each other,
Another object of the present invention is to provide a shield processing device for a cable which solves the above problems by detecting the drain wire and then cutting it.

[0010]

In order to achieve the above object, the present invention comprises a drain wire spirally wound on an insulator having a circular cross section, and a shield braid covering the drain wire as an outer jacket. In a shield processing device for shielding the tip of a cable provided at least in the inside thereof, the cable has an inner diameter of a size that can be passed with a drain wire and cannot be added with a shield braid. A member for moving the member in contact with the distal end portion of the cable where the shield braid is exposed, and in a direction relatively opposite to the insertion direction of the cable to separate the shield braid from the drain wire; and moving the annular member. It has a sensor for detecting the presence or absence of a drain wire at the rear end of the cable, and a cutting means for cutting the shield braid when the drain wire is detected by the sensor. In which was formed.

Further, the apparatus further comprises a pulling means for pulling the cable out of the apparatus after cutting by the cutting means, and a removing means for removing the shield braid from the cutting point by the cutting means to the tip of the cable to the outside of the apparatus. be able to. Furthermore, it is possible to further have a suction means for sucking the shield dust of the cut portion by the cutting means.

[0012]

In the present invention, since the shield braid is hooked by the annular member to separate it from the drain wire, there is no pressing force on the drain wire unlike the conventional shield clamp.
The shield braid can be cut after stable separation and the presence of a drain wire confirmed by a sensor.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block diagram of an embodiment of the present invention.
In the figure, reference numeral 1 is a male blade, and a through-hole is formed in the central portion so that the I / O cable 20 can be inserted therethrough. The female blade 2 is configured to be movable at a height position facing the male blade 1. The scrap removal chuck 3 is configured to be movable together with the knife blade 2, and can be opened and closed regardless of the movement of the knife blade 2.

The escape guide 4 guides the I / O cable inserted through the center hole of the knife blade 2 to the O-ring 5. The O-ring 5 corresponds to an annular member for separating the shield braid from the cable with the drain wire, and as will be described later, its inner diameter is a concentric circle including the drain wire 24 in the cross section of the I / O cable 20. It is set to a value that is equal to or larger than the diameter and smaller than the outer diameter of the shield braid 23.

The drain wire detection sensor 6 is configured to be opened / closed by an opening / closing mechanism (not shown), and is provided at a height position where the I / O cable passing through the O-ring 5 can be chucked when closed. Further, the sensor 6 outputs a signal having a different level when the sensor 6 contacts the drain wire 24 which is a conductor, as compared with when the sensor 6 does not contact the drain wire 24.

On the left side of the male blade 1 in the drawing, the pushing chuck 7 is located at the same height position as the center through hole of the male blade 1 at the I / I position.
The O-cable is provided so as to be gripped and is movable in the left-right direction in the drawing. Further, 8 is a vacuum pipe, which is provided above the male blade 1 and is brought closer to the male blade 1 by the elevating mechanism 9 or separated as shown. Normally, the vacuum pipe 8 is at a position apart from the male blade 1 as illustrated.

Reference numeral 10 is an air cylinder, and its shaft 11
A knife blade 2 and a scrap removal chuck 3 are connected to the blade, and these are moved in the left-right direction in the drawing. Further, the fixing member of the knife blade 2 is attached to the fixing members of the escape guide 4 and the O-ring 5 via the air cylinder 12 and the attaching mechanism 13. Therefore, the knife blade 2 and the scrap removal chuck 3
At the time of moving, the escape guide 4 and the O-ring 5 also move in the same direction.

Further, the air cylinder 12 is provided with an escape guide 4
The O-ring 5 and the O-ring 5 are integrally moved by a drive mechanism for moving in the left-right direction in the drawing, and the positions of the escape guide 4 and the O-ring 5 are relatively changed with respect to the knife blade 2 and the scrap removal chuck 3. The male blade 1 is fixed to the base 14 and does not move. Similarly, the drain detection sensor 6 also does not move.

Next, the operation of this embodiment will be sequentially described with reference to FIGS. First, the I / O cable 2
At the same time that the tip portion of 0 is V-cut, the jacket (22 in FIGS. 7 and 8) is burned with an appropriate length from the tip, for example, with a nichrome wire, and then the user peels the jacket of the burned portion. Then, the shield braid is exposed.

Then, the I / O cable 20 having a tip portion from which the jacket is peeled off is passed through the through hole of the male blade 1 and the center hole of the female blade 2 in this order from the tip portion, as shown in FIG. Then, it is abutted against the scrap removal chuck 3 in the closed state. Note that when inserting this I / O cable,
As shown in FIG. 3, the pushing chuck 7 is in an open state, and the knife blade 2 and the scrap scraping chuck 3 are in a position where the knife blade 2 contacts the male blade 1 (this is referred to as a closed state). . As a result, the shield braid 23 comes at least at the position of the knife blade 2.

Subsequently, the knife blade 2 is moved from the position shown in FIG. 2 to a predetermined position in the direction of the O-ring 5 (this will be referred to as an open position), and the scrap removal chuck 3 is also provided.
However, after being opened, the position where the tip 22 of the I / O cable 20 which is slightly behind is present is gripped by the push-in chuck 7, and in that state, the push-in chuck 7
Is moved to a predetermined position that is closest to the male blade 1.

On the other hand, the escape guide 4 and the O-ring 5 are shown in FIG.
From the position (open position) to a predetermined position in the direction of the knife blade 2 (this is referred to as a closed position). Here, the O-ring 5 is made of a predetermined material between the inner diameter 51 and the outer diameter 52. O-ring 5 and I /
The positional relationship with the cross section of the O cable 20 is as shown in FIG. That is, the O-ring 5 has an inner diameter 51
Is the inner diameter of the shield braid 23 (the outer diameter of the drain wire 24) 2
It is set to 31 or more and smaller than the outer diameter 232 of the shield braid 23.

Therefore, the shield braid 23 has the O-ring 5
2, the movement to the right in FIG. 2 is blocked, while the drain wire 24 and the insulator 25 inside the drain wire 24 are inserted through the O-ring 5 as they are, and the drain detection sensor in the open state. Reach position 6.

Therefore, as shown in FIG. 3, in the I / O cable 20, the shield braid 23 and the drain wire 24 are separated by the O-ring 5. In addition, in FIG.
Reference numeral 3a indicates a slack portion of the shield braid 23, which is caused by the pushing in by the pushing chuck 7 and the above-mentioned movement restriction by the O-ring 5.

Subsequently, the push-in chuck 7 shown in FIG.
Closed, scrap removal chuck 3 open, escape guide 4
Is in a closed state (a state in which the shield braid 23 and the drain wire 24 are separated by the O-ring 5), the drain detection sensor 6 is closed.

As a result, when the drain detection sensor 6 comes into contact with the drain line 24, a drain line detection signal is output, and as a result, the drain detection sensor 6 causes the drain line 24.
4, the female blade 2 is moved to the closed position where it abuts the male blade 1 to push the shield braid 23 open and cut it. At this time, the escape guide 4 and the O-ring 5 also move together with the knife blade 2.

If the drain detection sensor 6 cannot detect the drain wire 24, the above cutting is not performed. Therefore, if the shield braid 23 and the drain wire 24 cannot be separated, the drain wire 24 will not be cut. It is possible to prevent the line 24 from being cut.

After the above cutting, the drain wire detection sensor 6 is opened to release the chuck of the drain wire 24, and then the push-in chuck 7 is moved in the direction away from the male blade 1. As shown in FIG. 5, the I / O cable 20 having a tip end where the drain wire 24 is exposed
After pulling out to the outside, the air cylinder 10 is used to knife knife 2, scrap removal chuck 3, escape guide 4, O-ring 5
Are moved to the right from the positions shown in FIG. 4, and the escape guides 4 and the O-rings 5 are moved to the right by the air cylinders 12, respectively, to the open position as shown in FIG. Up to.

Then, the scrap removal chuck 3 is changed from the open state shown by 3a in FIG. 5 to the closed state shown by 3b, so that the shield braid 23 between the knife blade 2 and the escape guide 4 is grasped. . After this, as shown by 3c in the figure, the scrap removal chuck 3 is rotated, and the shield braid 2 is rotated.
Discharge 3 as shield scrap. At the same time,
As shown in FIG. 5, the vacuum pipe 8 descends close to the male blade 1 and sucks fine shield dust remaining around the male blade 1. By doing so, since the shield braid can be automatically removed, the workability of the shield treatment can be improved. Furthermore, since it is possible to prevent the shield scraps from entering the device sliding portion, it is possible to prevent malfunction of the device sliding portion and improve the reliability of the shield processing device.

Then, again, the knife blade 2, the scrap removal chuck 3, the escape guide 4 and the O-ring 5 are attached to the air cylinder 1.
By 0, it moves to the left in FIG. 5 and returns to the initial state shown in FIG. Thereafter, the above operation is repeated to perform the shield work.

[0032]

As described above, according to the present invention, there is no pressing force on the drain wire unlike the conventional shield clamp, and the drain wire and the shield braid can be stably separated by the annular member. Without cutting the drain wire
Only the shield braid can be cut, and the shield braid can be cut after confirming that there is a drain wire by a sensor, so if the shield braid and drain wire cannot be separated, drain It is possible to prevent the line from being cut.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a main part of an embodiment of the device of the present invention when a cable is inserted.

FIG. 3 is an explanatory diagram of a main part of an embodiment of the device of the present invention when the shield braid and the drain wire are separated.

FIG. 4 is an explanatory diagram of a main part of an embodiment of the device of the present invention at the time of cutting.

FIG. 5 is an explanatory diagram of the main part of the embodiment of the device of the present invention when the shield braid is removed.

FIG. 6 is a diagram showing a positional relationship between an O-ring and a cable cross section.

FIG. 7 is an explanatory diagram of a configuration of a round cable.

FIG. 8 is a configuration diagram of an inner core wire.

FIG. 9 is an explanatory diagram of an example of a conventional device when a cable is inserted.

FIG. 10 is an explanatory diagram of an example of a conventional device when a shield braid is clamped.

FIG. 11 is an explanatory diagram of an example of a conventional device at the time of cutting.

[Explanation of symbols]

1 ... Male blade, 2 ... Female blade, 3 ... Scrap removal chuck, 4 ...
Escape guide, 5 ... O-ring, 6 ... Drain wire detection sensor, 7 ... Push-in chuck, 8 ... Vacuum pipe, 1
0, 12 ... Air cylinder, 20 ... I / O cable, 21
... Inner core wire, 22 ... Outer jacket (jacket), 23 ... Shield braid, 24 ... Drain wire, 51 ... O-ring inner diameter, 52
… O-ring outer diameter, 231… Shield braid inner diameter, 232…
Shield braid outer diameter.

(72) Inventor Nobuo Minoru, Horiyamashita, 1st Horiyamashita, Hadano, Kanagawa Prefecture (72) Inventor Yukio Murata, 1st, Horiyamashita, Hadano, Kanagawa

Claims (1)

[Claims] 1. A shield for shielding a tip portion of a cable in which a drain wire spirally wound around an insulator having a circular cross section and a shield braid covering the drain wire are provided at least in an outer jacket. In the processing device, the cable has an annular member having an inner diameter of a size that allows the cable to pass with the drain wire attached and cannot be added with the shield braid, and the annular member is exposed to the shield braid. And a separating means for contacting the tip of the cable and moving in a direction relatively opposite to the insertion direction of the cable to separate the shield braid and the drain wire, and the cable tip after the movement of the annular member. And a cutting means for cutting the shield braid when the drain wire is detected by the sensor. Buru of shield processing apparatus.