JPH0561847B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for cutting a copper tape spirally wound outside a core wire in a coated cable such as a power cable.

(Prior art) This type of coated cable is provided with various coating layers on the outside of the core wire depending on the purpose of use of the cable, and these layers are used when connecting to a connector or connecting cables to each other. It is necessary to cut each of the coating layers to a required length and remove them (referred to as step removal). Conventionally, this work has been carried out manually by an operator using a jig such as a knife for each cable.

(Problems to be solved by the invention) This type of manual work requires advanced work techniques, tends to cause variations in work, and is difficult to improve work reliability, resulting in poor workability. A method has been proposed in which such step peeling is performed mechanically using an automatic cable step peeling device equipped with a cutter. However, among the coating layers in cables, for example, copper tape provided for shielding has a harder material than other insulating coating layers and is wound in a spiral shape, so it cannot be cut smoothly with a cutter. If this is not done, the cut end of the copper tape will bend and the cutter guide will ride on the same end, resulting in the cutter tip not reaching the tape, resulting in uncut parts, and the end to be left behind after cutting. It unravels and floats up from the inner coating layer, and if this floating is not adjusted, it becomes difficult to proceed with the next process, and as a result, the operating efficiency of the automatic stage peeling device as described above is reduced. There was a problem.

(Means for Solving the Problems) The present invention aims to provide a method for cutting a copper tape of a coated cable that can solve the above problems. For example, a device for cutting the copper tape of a coated cable is provided, and the coated cable detachably fixed to the device is passed through a through hole in the center of a cutter roller, and the cutter roller is movable in the longitudinal direction of the coated cable. The cutter is rotatable around the coated cable, and a cutter having a roller unit and a blade is inserted into each of the radial guide holes leading to the central through hole of the cutter roller so as to be movable forward and backward with respect to the central through hole. In the roller unit, an adhesive layer is provided on the outer periphery of the roller, and a fixing tape with the adhesive layer on the outside is wrapped in advance around the outer periphery of the roller. With the blade of the mold protruding, move the cutter roller to the planned cutting location of the copper tape exposed on the outer periphery of the coated cable, press the roller of the roller unit against the outer periphery of the copper tape, and in this state cut the cutter roller. Rotate the
Wrap the fixing tape around the outer circumference of the roller around the outer circumference of the copper tape, then pull this roller unit away from the outer circumference of the copper tape, move the cutter to press the blade against the outer circumference of the copper tape, and rotate the cutter roller in this state. The blade of the cutter bites into the copper tape and cuts it along the outer periphery of the copper tape.

(Function) In this way, when the fixing tape is wound around the copper tape and pasted, and then the copper tape is cut together with the fixing tape using a cutter, the copper tape retains its cylindrical shape, so there is no bending at the cut end. Since the cutting part is completely cut along the planned cutting line without bending or leaving any uncut parts, and the cut part is wrapped with a fixing tape, there is no possibility of it coming undone after cutting.

(Embodiment) FIGS. 1 and 2 show an embodiment of a roller unit used in carrying out the present invention. In the figure, 1 is a roller arm for attaching to an automatic cable layer peeling device (not shown); 2
is a roller body which is rotatably supported on the roller arm 1 via the roller shaft 3 and detachably attached to the roller shaft 3. As for this detachable structure,
For example, the roller shaft 3 may be configured to be movable in the axial direction. Reference numeral 4 denotes a sponge sheet as an elastic layer attached to the roller body 2, which acts as a buffer packing to make it easier to wrap cellophane tape, which will be described next, around the copper tape of the coated cable. Reference numeral 5 denotes an adhesive tape as an adhesive layer attached to the surface of the sponge sheet 4, and the outer surface is coated with an adhesive 5A, for example. 6 is, for example, a single-sided adhesive cellophane tape as a fixing tape wrapped around the adhesive tape 5, and the adhesive tape 5 is wrapped with the adhesive side 6A outside.
It is wrapped around. It is desirable that the thickness of the cellophane tape 6 is as small as possible, but the thickness of the cellophane tape 6 itself or the laminated thickness when wrapped multiple times around the copper tape should be set to be thinner than the height of the blade of the cutter for cutting the copper tape. It is necessary to. Prior to cutting, this cellophane tape 6 is attached to a shielding copper tape 9A, which is one of the coating layers of the coated cable 9 shown in the figure, along the planned cutting line (two-dot chain line 10 in the figure).
A feature of the present invention is that the material is wound and pasted so as to sandwich the material (represented by ).

By using the roller unit 8 constructed in this manner, it is possible to cut the copper tape in the coated cable and, as a next step, to remove the semiconductive tape provided inside the copper tape.

That is, as shown in FIG. 3A, the coated cable 9
The core wire 9B is exposed through a predetermined process, and a predetermined length of the sheath 9C and the cloth tape 9D are removed to expose the uncut copper tape 9A as shown by the planned cutting line 10. On the other hand, the roller unit 8 is located on the side of the copper tape 9A. From this state, as shown in Figure B,
Move the roller unit 8 toward the copper tape 9A, press the cellophane tape 6 against the copper tape 9A so that its center corresponds to the planned cutting line 10, and keep moving the roller unit 8 toward the copper tape 9A. rotate it along the outer circumference of the Then, the cellophane tape 6 is attached to the outer peripheral surface of the copper tape 9A by its adhesive surface 6A, for example, in a state where it is wound once so as to sandwich the planned cutting line 10. Then,
The copper tape 9A is cut together with the cellophane tape 6 by separating the roller unit 8 from the copper tape 9A and rotating a cutter (not shown) along the planned cutting line 10. Since the cellophane tape 6 is attached, the same part is fixed while maintaining its cylindrical shape, so that the cutter can completely cut the part, and the part cannot be bent or cut from the same part. It won't come undone. Note that it is sufficient to wrap the cellophane tape 6 once around the copper tape 9A. In particular, when it is necessary to remove the cellophane tape 6 from the side of the copper tape 9A to be left after cutting, it is desirable to wrap the cellophane tape 6 once. Further, the cellophane tape 6 may be wound multiple times as long as it is thinner than the height of the cutter blade and does not impair cutting performance.

Next, the copper tape 9A cut in this way
When is removed by means not shown, the semiconductive tape 9E is exposed as the inner coating layer. As mentioned above, the cellophane tape 6 of the roller unit 8 is removed from the roller unit 8 by pressing it against the copper tape 9A, and as a result, the adhesive surface 5A of the adhesive tape 5 is exposed, as shown in FIG. , the semiconductive tape 9E is obtained by moving the roller unit 8 and cutting the adhesive surface 5A at a predetermined location.
When the roller unit 8 is rotated around the semi-conductive tape 9E, the semi-conductive tape 9E is stuck to the adhesive tape 5 and removed as if being wound up.

Next, an embodiment of an automatic cable layer peeling device equipped with such a roller unit 8 will be shown. That is, in FIGS. 5 and 6, 11 is the machine base, 1
2 is a cutter device supported on a machine base 11 so as to be able to reciprocate in the horizontal direction in the figure; 13, 14, and 15 are cutter rollers provided integrally within the cutter device 12; The sheathed cable 9 can be inserted through the sheathed cable 9, and can be reciprocated in the left and right directions in the figure by the cutter device 12.
It is rotatably supported around the

One of these cutter rollers13
is configured, for example, as shown in FIG.
That is, 18 is an annular frame, which has a central through hole 18A through which the covered cable 9 is inserted, and radial guide holes 18B, 18C, 18D, and 18E. A cutter 19 having a blade 19A depending on the type of layer and the above-mentioned roller unit 8
The guide holes 18D and 18E are respectively provided with units 20 and 21 for removing the coating layer of the coated cable 9 after it has been cut.

These cutter 19, removal unit 20, removal unit 21 and roller unit 8
Both are configured to be able to move forward and backward with respect to the center of the annular frame 18 by an appropriate drive source (not shown), and thus to be able to move toward and away from the covered cable 9. 23 is a coated cable end clamp device;
Reference numeral 24 denotes a centering device, which can be spaced apart from the machine stand 11 by a desired distance.

The coated cable 9 set in such an automatic cable layer peeling device is inserted into the cutter roller 13 to cut and remove each coating layer, and the copper tape is cut and removed as follows. be done. That is, to explain in relation to what has already been described with reference to FIGS. 1 to 3, first, the roller unit 8 is moved through the central through hole 18A by a driving source.
After the cellophane tape 6 is brought into contact with the copper tape 9A of the coated cable 9, the cutter roller 13 is rotated to remove the cellophane tape 6 as described above with reference to FIG. 3B. 6 is wound around the copper tape 9A, the roller unit 8 is moved backward by a drive source, and then, for example, the cutter 19 is driven and moved forward, and the blade 19A is moved forward.
is pressed against the copper tape 9A to which the cellophane tape 6 is attached and the cutter roller 13 is rotated in this state, so that the copper tape 9A is completely cut along the cutting line 10 together with the cellophane tape 6. After that, the cutter 19 is moved backward, and the removal unit 2
Copper tape 9 that became unnecessary after advancing 0,21
A removing unit 20 together with cellophane tape 6;
21, move the cutter roller 13 in the axial direction, and discharge the copper tape 9A and cellophane tape 6 outside the cutter roller 13, thereby completing the prescribed cutting of the copper tape 9A. .

(Effects of the Invention) According to the present invention, as described above, the fixing tape is wrapped around the area where the copper tape of the coated cable is scheduled to be cut, and then the copper tape and the fixing tape are wrapped over the fixing tape. Since the copper tape is cut at the same time, the copper tape can be cut reliably, and in that case, the cut part of the copper tape is fixed by the fixing tape and kept in a cylindrical shape, so the copper tape can be cut at the same time. There is no bending or unraveling of parts, and uniform processing is always possible. In addition, in this invention, the copper tape cutting operation is carried out by placing the fixing tape into a cutter roller that is movable along the length of the coated cable and rotatable around the cable. The roller unit that wraps the copper tape around the copper tape and the cutter that cuts the copper tape along the outer periphery are inserted in close proximity to the cable, making it possible to automate a series of operations and improve the efficiency of stripping the coated cable. can be improved. Furthermore, since the blade of the cutter has a concave curved surface that protrudes in a substantially curved key shape, the concave curved surface follows the outer periphery of the copper tape.
The blade cuts the copper tape in a scooping motion,
There is no risk of damaging the layer beneath the copper tape.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of a roller unit used in carrying out the present invention together with a coated cable, Fig. 2 is a side view of the roller unit, and Figs. 3 A and B are figures according to the present invention. FIG. 4 is a perspective view showing the state of removal of the semiconductive tape by the roller unit; FIG. 5 is a schematic diagram of the automatic cable layer peeling device; FIG. FIG. 2 is a sectional view showing an example of the structure of a cutter roller. In addition, in the figure, 6 is cellophane tape, 6A is an adhesive surface, 8 is a roller unit, 9 is a coated cable,
9A is a copper tape, and 10 is a planned cutting line.

Claims (1)

[Claims] 1 A device for cutting the copper tape of the coated cable is provided, and the coated cable 9 detachably fixed to this device is inserted into the central through hole 18A of the cutter roller 13.
The cutter roller 13 is movable in the longitudinal direction of the coated cable 9 and rotatable around the coated cable 9, and has radial guide holes 18B, which communicate with the central through hole 18A of the cutter roller 13. A cutter 19 having a roller unit 8 and a blade 19A, respectively, is inserted into the cutter 18C so as to be movable forward and backward with respect to the central through hole 18A. A fixing tape with the adhesive layer on the outside is wrapped, and the cutter 19 has a substantially curved key-shaped blade 9A protruding from a concave curved surface facing the central through hole 18A, and the copper tape exposed on the outer periphery of the covered cable 9. Move the cutter roller 13 to the planned cutting point 9A, press the roller of the roller unit 8 against the outer periphery of the copper tape 9A, rotate the cutter roller 13 in this state, and remove the fixing tape on the outer periphery of the copper tape. Wrap it around the outer circumference of the copper tape 9A, then separate the roller unit 8 from the outer circumference of the copper tape 9A, move the cutter 19 to press the blade 19A against the outer circumference of the copper tape 9A, and in this state cutter roller 1
3, the blade 19A of the cutter 19 bites into the copper tape 9A, and cuts the copper tape 9A along the outer periphery of the coated cable.