JPH0359526B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to an apparatus for manufacturing tape-attached electric wires, and in particular, it aims to reduce manufacturing costs by simplifying operations and equipment, and downsizing the apparatus, and to achieve uniform quality. The present invention relates to an apparatus for manufacturing electric wires with tape. [Prior Art] Electric wires with tape are used, for example, as signal cables to transmit print signals to the print heads of printers in office automation (OA) equipment, and to supply illumination power to the scanning optical systems of copying machines. Some are used as supply cables.
Figure 4 shows this type of usage, and shows 1
2 is a connection part that is connected to a moving member (not shown) such as a print head or a scanning optical system, and 2 is a connection part that is connected to a fixed system such as an electric wire wired to an OA device or a control part (not shown). The connecting portion 5A is a bent portion that absorbs tensile force, pressing force, twisting force, etc. generated by the movement of the connecting portion 1.
Wiring portions 5B and 5C are connected to this bent portion 5A via connecting portions 3 and 4. In FIG. 5, A shows a tape-covered wire used for this purpose, the bent portion 5A is formed by the tape-covered wire, and the wiring portions 5B and 5C are formed by a plurality of insulated conductors without tape. It is formed. FIG.
A plurality of these are arranged in parallel and integrated with a tape-like covering 10. The design dimensions of the tape-attached electric wire shown in FIG. 5A are as follows. Cable total length L = 2000 mm Length L ₁ of the bent portion 5A = 300 to 450 mm Length L ₂ of the wiring portion 5B = 200 mm Length L ₃ of the wiring portion 5C = 1500 mm In the above configuration, the print head, scanning optical system, etc. When the movable member moves, the connecting parts 1 and 3 move in the direction of the arrow, and at that time, tensile force, pressing force,
Even if a twisting force or the like occurs, it is dispersed and absorbed by the bending portion 5A, particularly the tape-like covering 10. This makes it possible to suppress local concentration of stress. The tape-attached electric wire described above is manufactured by, for example, the following apparatus. (1) Extrusion device A plurality of insulated conductors are arranged in parallel and fed to an extruder, and a tape-shaped covering is extruded around their outer peripheries to continuously produce tape-covered wires. After this, the wiring parts at both ends are For exposure, the tape-like covering is peeled off and formed. (2) Roll crimping device A plurality of insulated conductors arranged in parallel and two pieces of plastic tape placed above and below the insulated conductors are fed between a pair of heated rolls, and the tape-attached wires are continuously bonded by heating and pressing. After that, the tape-shaped covering is peeled off to expose the wiring at both ends. Since the extrusion device and roll crimping device can perform continuous production, productivity is high and products of stable quality can be obtained. (3) Mold crimping device Two pieces of plastic tape are placed above and below multiple insulated conductors arranged in parallel so as not to cover the wiring at both ends, and heated and pressurized inside the mold to produce tape-attached electric wires. do. Note that in order to obtain products of various sizes, molds corresponding to the products of various sizes are required. [Problems to be Solved by the Invention] However, according to the conventional tape-attached wire manufacturing equipment, in the case of an extrusion device and a roll crimping device, it is necessary to expose the wiring portion as necessary after forming the tape-attached wire. Moreover, since it is necessary to peel off the tape-like covering by a predetermined length, the work is troublesome, and there is a risk that wire breakage or damage may occur to the insulated conductor during the work. Furthermore, since the peeled tape-like covering is not used, there is a problem in that the manufacturing cost is wasted and the cost increases.
Furthermore, in the case of a mold crimping device, molds of various sizes are required to obtain various products, and as the wire size becomes longer, the mold becomes larger. For this reason,
The alignment of the tape with the insulated wire core becomes complicated,
Combined with the problem of the type and size of the mold, this results in an inconvenience of increased costs. [Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems, and eliminates the troublesome processing work after manufacturing tape-attached electric wires, and enables production using a simple device without causing deterioration in quality. In order to reduce the cost of the product, a tape-like covering cut to a predetermined length is placed on a mounting table, and the tape-like covering is cut to a predetermined length from the insulated wire core insertion hole of the tape-like covering. The insulated wire cores are inserted in a predetermined relative positional relationship to form a composite, the composite is held between chucks, and the chuck is moved in the take-up direction while being pressurized and heated by pressurizing and heating means such as a mold. The present invention provides an apparatus for manufacturing a tape-attached electric wire, which manufactures a tape-attached electric wire. That is, the tape-attached electric wire manufacturing apparatus of the present invention includes the following means. (1) Mounting table Place the tape-shaped covering cut to a predetermined length, and insert the insulated wire core cut to a predetermined length into the insulated wire core insertion hole formed in the tape-shaped covering. This is where it is inserted based on relative positional relationship. (2) Holding means The end of the tape-shaped sheath of the composite body, which has an insulated wire core inserted into the insulated wire core insertion hole of the tape-shaped sheath and is placed on the mounting table, and the insulation inserted into the tape-like sheath The wire cores are held together in a chuck that opens and closes using an air cylinder or the like. (3) Driving means The chuck that holds the tip of the tape-like covering is moved by rotating the screw shaft by driving a motor or the like.
That is, the manufactured electric wire with tape is taken over. (4) Pressurizing and heating means such as molds, etc. A composite body in which an insulated wire core is inserted into a tape-like covering is sandwiched from above and below and heated and pressurized to integrate the tape-like covering and the insulated wire core to produce a tape-attached electric wire. It is meant to be. When using the mold, it consists of a circular groove part through which the insulated wire core insertion hole part of the tape-like covering passes, and a thin gap part through which the part of the tape-like covering without the insulated wire core insertion hole passes. The surfaces of the circular groove and the thin gap are covered with a coating such as Teflon, which has good lubricity. Furthermore, a heater is embedded inside the mold. A heating roll having the same cross-sectional structure may be used instead. [Operation] With the above configuration, the tape-like covering is placed on the mounting table, and the insulated wire core is inserted into the insulated wire core insertion hole of the placed tape-like covering to form a composite. The tip of the tape-like covering is held together with the insulated wire core by the chuck, and the screw shaft is rotated by the drive of the motor to move the chuck in the direction in which the tape-attached electric wire is withdrawn. At this time, the composite is simultaneously sandwiched between a pair of upper and lower molds and heated and pressurized to integrate the composite and produce it continuously. Therefore, it is possible to manufacture tape-attached electric wires of uniform quality. [Example] Hereinafter, the apparatus for manufacturing a tape-attached electric wire of the present invention will be described in detail. FIG. 1 shows an embodiment of the present invention, which includes a mounting table 25 on which a tape-shaped covering 15 cut to a predetermined length and an insulated wire core 9 cut to a larger length are placed; Molds 21a and 21b for heat-pressing the insulated wire core 9 and the tape-like covering 15, chucks 20a and 20b for holding one end of the tape-like covering 15 together with the insulated wire core 9, and a motor M for driving. A screw shaft 23 for moving the chucks 20a and 20b in the direction of the arrow, and a chuck 20
A blower 2 that cools the tape-attached electric wire held between a and 20b and pulled out from the molds 21a and 21b.
It consists of 4. FIG. 2 shows molds 21a and 21b, and a circular groove 22a through which the insulated wire core 9 and the tape-like covering 15 pass, and a gap 22b through which only the tape-like covering 15 passes are formed between them. A heater (not shown) is embedded inside. Further, in order to allow the tape-shaped covering 15 to pass smoothly, the contact surface is coated with Teflon or the like having excellent lubricity. FIG. 3 shows a tape-like covering 15, with an insulated wire core insertion hole 1 between two plastic tapes 12.
4 is formed and bonded by an adhesive layer 13. Suitable plastic tapes include polyester, polyvinyl chloride, polyethylene, polypropylene, or a laminate of aluminum and polyester, and the adhesive layer 13 includes polyethylene adhesives, ethylene-vinyl acetate copolymer adhesives, and polyester adhesives. Adhesives, polyamide adhesives, vinyl chloride/vinyl acetate copolymer adhesives, etc. are suitable, and one of these adhesives is uniformly applied onto the plastic tape 12 by heating it above its melting temperature. (For example, there are coating methods such as extrusion coating, gravure coating, reverse coating, knife coating, etc.). The two adhesive layered plastic tapes 12 thus obtained are placed facing each other with the adhesive layer 13 interposed therebetween, and heated and pressed together with a heating roller except for the portion that will become the insulated wire core insertion hole 14. . The heating temperature in this case is higher than the melting temperature of the adhesive 13 and lower than the melting temperature of the plastic tape 12. The tape-shaped covering 15 is manufactured continuously and cut into a predetermined length L ₁ (FIG. 5A) based on the design value of the tape-attached electric wire (FIG. 3). On the other hand, the insulated wire core 9 is the electrical conductor 7
It may be coated with an insulator 8 such as vinyl chloride or polyethylene, or it may be an optical fiber, and it is cut to a predetermined length L (FIG. 5A). In the above configuration, the tape-shaped covering cut to a predetermined length and the insulated wire core cut to a predetermined length are placed on the mounting table 25, and the insulated wire core 9 is inserted into the insulated wire core insertion hole 14. insert. At this time, insert the stainless steel pipe into the insulated wire core insertion hole 14 in advance, and
Correcting the collapse of 4 to make it easier to insert the insulated wire core 9,
After the insulated wire core 9 is inserted, it may be pulled out. Position the insulated wire core 9 so that a predetermined length is exposed from both ends of the tape-like covering 15,
The tip of the tape-like covering 15 is held between chucks 20a and 20b which are opened and closed by an air cylinder or the like, and molds 21a and 21 whose front and back inner surfaces of the sandwiched tape-like covering 15 are opened and closed by an air cylinder or the like.
The screw shaft 23 is rotated by the drive of the motor M while pressurizing and heating with b, and the chuck 20 is
When a and 20b are pulled toward the motor M side, the mold 21
a, 21b, the outer periphery of the insulated wire core 9 and the inner periphery of the insulated wire core insertion hole 14 of the tape-shaped covering 15 are fused together over the entire length of the tape-shaped covering 15. Tape-shaped covering 1 fused in this way
5 and the insulated wire core 9 are cooled by the blower 24 and integrated to produce a tape-attached electric wire. Hereinafter, specific design examples of the tape-attached electric wire obtained by the present invention are as follows. (1) Tape-like covering 15 Plastic tape 12 Material Polyester tape Thickness 0.025mm Width 20mm Adhesive 13 Material Polyethylene Coating thickness 0.040mm Insulated wire core insertion hole 14 Number 1 piece Inner diameter 4.0mm Cutting length L ₁ = 500mm ( 2) Insulated wire core 9 Material Polyethylene coated optical fiber Outer diameter 1.0mm (3) Mold 21a, 21b Heating temperature 120℃ Pressure 0.3Kg/cm ² (4) Manufacturing speed Manufactured under conditions of 2.0m/min or more. According to the tape-attached electric wire, the adhesive strength between the plastic tape 12 and the inner periphery of the optical fiber and the insulated wire core insertion hole 14 showed approximately the same value. In the above embodiments, a mold was used, but the invention is not limited to this, and a heating roll or the like may also be used. [Effects of the invention] As explained above, according to the tape-attached electric wire manufacturing apparatus of the present invention, the tape-shaped covering cut into a predetermined length is placed on the mounting table, and the insulated wire core of the tape-shaped covering is placed on the mounting table. The insulated wire core cut to a predetermined length is inserted through the insertion hole to form a composite, the composite is held between chucks, and the chuck is removed while being pressurized and heated with a pressurizing and heating means such as a mold. Since the tape-attached electric wire is moved to , it is possible to eliminate the processing work after manufacturing the tape-attached electric wire, and to reduce the cost of the product by making it possible to produce it with a simple device without causing a deterioration in quality. That is, the following effects can be obtained. (1) Since L, L ₁ , L ₂ and L ₃ shown in FIG. 5A can be arbitrarily selected, it is possible to obtain a tape-attached wire of a desired size. (2) Peeling of the tape-like covering becomes unnecessary. Therefore, there is no wire breakage or damage associated with the work, and quality can be made uniform. (3) Simply provide an insertion hole in the tape-like covering, insert the insulated wire core (including optical fiber), and pass it through the fusion device, which simplifies the work and equipment, and reduces the size of the device. It is possible to aim for

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention, and FIG.
The figures are an explanatory diagram showing a mold of the apparatus for producing a tape-attached electric wire of the present invention, FIG. 3 is an explanatory diagram showing a tape-shaped covering, FIG. Figures A and B show electric wires with tape, A is a plan view, and B is a side view. Explanation of symbols: 1...Movable connection part, 2...Fixed connection part, 3, 4...Connection part, 5...Bending part (wire with tape), 12...Plastic tape, 13...
...Adhesive, 14...Insulated wire core insertion hole, 15...Tape-like covering, 20a, 20b...Chick, 2
1a, 21b... Mold.

Claims (1)

[Scope of Claims] 1. In an apparatus for manufacturing a tape-attached electric wire having an insulated wire core covered with a tape-like covering and having a predetermined length exposed from both ends thereof, the insulated wire core has a predetermined length exposed from both ends thereof. a mounting table on which the composite inserted into the insertion hole of the tape-shaped covering is placed with the length exposed, and a tip of the tape-shaped covering of the composite placed on the mounting table is placed on the mounting table; a clamping means for clamping the insulated wire core together; a driving means for moving the clamping means in a direction in which the tape-attached electric wire is taken off; 1. An apparatus for manufacturing a tape-attached electric wire, comprising a pair of pressurizing and heating means for integrating the tape-shaped covering and the insulated wire core by heating and pressurizing them by sandwiching them from above and below. 2. The pair of pressurizing and heating means includes a circular groove portion through which the insertion hole portion of the tape-shaped covering passes;
Claims comprising a pair of molds having a thin gap through which the portion of the tape-like covering without the insertion hole passes, and having a lubricating coating on the surfaces of the circular groove and the gap. 2. The apparatus for manufacturing a tape-attached electric wire according to item 1.