JPS626287B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a stretchable tape electric wire.

Traditionally, tape wires or flat cables,
Tape wires, also known as ribbon wires, are used between devices that are constantly moved, such as between computers and microprocessors used in them, and between computers, displays, and terminal devices such as keyboards. In some cases, something with good flexibility is required. In this case, when the terminal device is moved closer to the main body, the length of the tape electric wires may gather and bend, causing an obstruction to the operator.

The present invention was made in order to eliminate such inconvenient situations, and provides a method for manufacturing a tape electric wire that has good flexibility and is stretchable in the longitudinal direction.

Next, the present invention will be explained in detail based on illustrated examples. 1 and 2 show a tape electric wire obtained by carrying out the method of the present invention, in which the stretchable tape electric wire, generally indicated by 1, has a large number of wavy bends perpendicular to its longitudinal direction. Part 1
A, 1A, . . . are formed in series. This wave-shaped bent portion 1A is formed by temporarily fixing a tape-shaped thermoplastic insulating material 1B (described later) in a zigzag shape with a number of pins, heating it to its softening temperature to give it thermal deformation, and then cooling it. It is then bent and formed. The folding width b of this wave-shaped bent portion 1A is set smaller than the width L of the cable in consideration of the convenience of its use. The tape electric wire is made by preparing two sheets of a tape-shaped thermoplastic insulating material 1B, for example, a composite film made by laminating a polyester film and a polyvinyl chloride, and placing the polyvinyl chloride on the outside between these films. A large number of conductors w, w, . . . are buried integrally in a sandwich-like manner along its longitudinal direction. and conductor w
It may be an ordinary single wire conductor, or it may be made by twisting thin conductors into a single wire.It is preferably made of thin synthetic resin fiber as a core wire in consideration of elasticity, and multiple thin annealed copper wires wound horizontally around it. Things are good. Note that 2 is a connector attached to both ends of this tape electric wire.

Next, FIGS. 3 to 7 show an example of a device for carrying out the present invention, in which the pedestal 6 is provided with one pin arrangement mechanism 8 of the waveform shaping device. This pin arrangement mechanism 8 is for placing the tape electric wire 5 sent out from the tape electric wire delivery bobbin 3 via the pinch roll 4, and giving waveform deformation to the tape electric wire 5 as described later, and extends in the longitudinal direction of the tape electric wire. A fixed cantilever pin 81 is attached to a parallel member in a cantilevered manner in a direction perpendicular to the direction of the tape electric wire, and a large number of movable cantilever pins are sequentially arranged at regular intervals relative to this in the open state. 82, and these movable cantilever pins 82 are biased so as to come into close contact with the fixed cantilever pins 81 in the closed state. This shifting mechanism for moving pins is the same as that in the other pin arrangement mechanism 7, which will be described later, so FIG. 6 will be described together.

The other pin arrangement mechanism 7, which is another element of the waveform shaping device, is a frame whose one end is rotatably supported on the pedestal 6 by a shaft 73, as shown in FIGS. 3 and 5. A fixed cantilever pin 71 and a large number of movable cantilever pins 72 are provided in the same relationship as the fixed cantilever pin 81 and the movable cantilever pin 82 in the one pin arrangement mechanism 8 in the longitudinal direction. .

As shown in FIG. 6, the movable cantilever pins 72 and 82 have respective ends connected to the chain 12 fixed to one end of the fixed cantilever pins 71 and 81 with a predetermined open interval. By pulling the movable cantilever pins 72, 82 farthest from the fixed cantilever pin toward the fixed cantilever pin, the movable cantilever pins closer to the fixed cantilever pin are successively moved by the movable cantilever pin. Being pushed and pushed to one side.

Since the movable cantilever pins 72 and 82 are cantilevered, a flange is provided at the base of each pin so that the movable cantilever pin maintains a position perpendicular to the longitudinal direction of the tape wire when in the open state or the closed state after shifting. 7
5, 85, which is guided by a groove provided in the member and having a width slightly larger than the outer diameter of the flange. In FIG. 3, 74 is a handle for rotating the other pin arrangement mechanism 7, and 11 is a lock lever of the rotating frame provided on the pedestal 6.

Next, a waveform fixing device for fixing the waveform of the tape electric wire formed by the above-mentioned waveform shaping device will be explained. As shown in FIG. 7, this is a box-shaped heating furnace 1 with one opening in which one pin arrangement mechanism 8 and the other pin arrangement mechanism 7 of the waveform shaping device can move forward and backward into a position where the tape electric wire 5 is shaped into a waveform.
3 (dashed line 13' indicates its retracted position), and a cooling device 14 that supplies cold water or cold air at that position. Note that the heat source of the heating furnace may be any one of electric resistance heat generation, gas combustion heat, dielectric heat generation, and the like.

Next, the method of this invention will be explained.

First, the tape electric wire 5 fed out from the feeding bobbin 3 is placed on one of the pin arrangement mechanisms 8, and its left end is held down by the first clamp 10. Next, connect the other pin arrangement mechanism 7 located above to the shaft 73.
The upper moving cantilever pin 72
is positioned below the lower movable cantilever pin 82, and then the movable cantilever pins 72 and 82 are shifted toward the fixed cantilever pins 71 and 81, respectively, and held in a zigzag shape as a whole. This is the state shown in FIG.

Next, after activating the second clamp 9 on the downstream side of the tape electric wire, the tape electric wire held in a zigzag shape as described above is heated from both sides by the heating furnace 13 as required depending on the material of the thermoplastic insulating material 1B. After the thermoplastic insulating material 1B is heated to a softening temperature of , to give thermal deformation to the thermoplastic insulating material 1B, it is cooled to form a large number of wave-shaped bent portions along the longitudinal direction at room temperature.

In the above example, a composite tape of polyester film and polyvinyl chloride is shown as the thermoplastic insulating material, but polyvinyl chloride tape or polyethylene tape may be used instead, and extrusion molding instead of the sandwich structure may be used instead. It's okay.

According to this invention, a set of pin array mechanisms each having a large number of cantilever pins arranged parallel to each other at regular intervals are arranged one above the other, and a long tape is placed between these pin array mechanisms. After positioning the wires, pass each pin of one pin arrangement mechanism alternately between each pin of the other pin arrangement mechanism to reverse the vertical positional relationship, and then The tape electric wire is held in a zigzag shape by shifting the pins in one direction, and then the thermoplastic insulating material of the tape electric wire is heated to its softening temperature to impart thermal deformation, and then it is cooled. Therefore, there is an effect that a stretchable tape electric wire having a large number of wave-shaped bent portions along the longitudinal direction can be easily and continuously manufactured from a long flat cable.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a tape electric wire manufactured by the method of this invention, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is an example of a manufacturing apparatus for carrying out the method of this invention. 4 is a side view showing the closed state in FIG. 3, FIG. 5 is a cross-sectional view taken along the line - in FIG. 4, and FIG. 6 is a movement of the pin array base frame and the opening/closing frame. FIG. 7 is a perspective view showing the pin moving mechanism, and a front view showing the molding and fixing device. DESCRIPTION OF SYMBOLS 1... Expandable tape electric wire, 8... One pin arrangement mechanism, 81... One fixed cantilever pin, 82... One movable cantilever pin, 7... The other pin arrangement mechanism,
71...Other fixed cantilever pin, 72...Other movable cantilever pin, 13...Heating furnace of corrugated fixing device, 14
...Cooling device for corrugated fixing device.

Claims (1)

[Claims] 1. A set of pin arrangement mechanisms consisting of a large number of cantilever pins arranged parallel to each other at regular intervals are arranged one above the other, and a long tape electric wire is positioned between these pin arrangement mechanisms. After that, pass each pin of one pin arrangement mechanism alternately between each pin of the other pin arrangement mechanism to reverse the vertical positional relationship, and then rotate each pin of each pin arrangement mechanism in one direction. A stretchable tape electric wire characterized in that the tape electric wire is held together in a zigzag shape, and then the thermoplastic insulating material of the tape electric wire is heated to its softening temperature to impart thermal deformation, and then cooled. manufacturing method.