JPH1186653A - Method and apparatus for manufacturing insulation displacement wire - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce manufacturing defects and loss at the time of manufacturing a pressure welding shielded wire. SOLUTION: At a vertical position between signal lines 2 and 3 and a drain wire 4 which are moved in a length direction at a predetermined line pitch P,
These are separated from each other by two shield tapes 12 and 13
Forming rollers 14 to 17 with heaters for sandwiching between them, and pitch grooves 14a, 1 of the forming rollers 14 to 17 are provided.
5a, 16a, 16d, 16e, shield tape 12,
13 is thermally bonded while applying pressure so as to conform to the outer circumferences of the signal wires 2 and 3 and the drain wire 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method and apparatus which can reduce defective manufacturing and loss of a press-contact shielded wire.

[0002]

2. Description of the Related Art As a conventional method of manufacturing a press contact shield wire 1 having two signal lines 2 and 3 and one drain wire 4 as shown in FIG. Each of the signal lines 2 and 3 having a predetermined line pitch and the drain wire 4 supplied from the
The sheets are adhered and adhered so as to be wound around from both sides with a piece of shield tape 7, then covered while extruding the sheath 8, and wound on a take-up reel 9 after water cooling.

[0003]

However, as shown in FIG. 7, when the overlapping end face 7a of the shield tape 7 is displaced toward the drain wire 4 at the time of forming by the forming die 6, the connector is used for a connector or the like. When the sheath 8 of each of the signal lines 2 and 3 is peeled off for connection, a part of the overlapping end face 7a of the shield tape 7 remaining on the drain wire 4 protrudes from the sheath 8 on the drain wire 4 side and becomes adjacent. May touch the conductor of the signal line 3.

[0004] In the molding die 6, each signal line 2,
3. Variations occur in the adhesion between the drain wire 4 and the shield tape 7, so that the signal lines 2, 3 and the drain wire 4 can easily come off from the shield tape 7, and a connection failure may occur in an automatic terminal processing machine. There is.

Furthermore, the technique of bonding the entirety of each of the signal wires 2 and 3 and the drain wire 4 with the single shield tape 7 using the die 6 is relatively difficult, and there are many losses and manufacturing defects at the start of the winding. This is a factor that hinders cost reduction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide a method and apparatus for manufacturing a press-contact shielded wire capable of reducing manufacturing defects and loss.

[0007]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a signal line and a drain wire are shielded from a vertical direction while being moved in a length direction at a predetermined line pitch. An object of the present invention is to provide a method for manufacturing a press-contact shielded wire, which comprises sandwiching and adhering with a tape, and thereafter covering with a sheath.

According to the first aspect, the signal line and the drain wire are sandwiched from above and below with two shield tapes instead of one shield tape and bonded, so that the technique is relatively simpler than the conventional forming die. become.

According to a second aspect of the present invention, a forming roller with a heater is provided at upper and lower positions of the signal line and the drain wire which are moved in the length direction at a predetermined pitch between the lines, and for sandwiching these with a shield tape from above and below. An object of the present invention is to provide an apparatus for manufacturing a press-contact shielded wire, in which a shield tape is thermally bonded while being pressed by the forming roller so as to conform to an outer periphery of a signal wire and a drain wire, and then covered with a sheath.

According to the second aspect, the two shield tapes are sandwiched from above and below by a forming roller with a heater and adhered to each other, so that the shield tapes are thermally bonded while being pressed so as to conform to the outer periphery of the signal line and the drain wire. it can.

Also, unlike the conventional forming dies, the overlapping end surface of the shield tape does not shift to the drain wire side at all, so that a part of the shield tape on the drain wire side may contact the conductor of the adjacent signal line. Nor.

According to a third aspect, the upper and lower forming rollers are
When a pitch groove for maintaining the pitch between the signal lines and the drain wires is formed, the signal lines and the drain wires can be bonded with the shield tape in a state where the pitch between the signal lines and the drain wires is accurately maintained.

According to a fourth aspect of the present invention, the upper and lower forming rollers are
A plurality of sets are arranged in the moving direction of the signal line and the drain wire, and each upper and lower forming roller changes the shape of the pitch groove so that the shield tape is sequentially bonded from the center in the width direction to both sides. The tape can be thermally bonded while being pressed uniformly so as to fit into the outer periphery of the signal line and the drain wire and each gap.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. Note that the same components and operations as those of the prior art are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0015] As shown in FIG.
Has, for example, two signal lines 2 and 3 and one drain wire 4 at a predetermined line pitch P, and
After being sandwiched and adhered by a pair of shield tapes 12 and 13, it is covered with a sheath 8.

Each of the signal lines 2 and 3 and the drain wire 4
As shown in FIG. 1, a pair of upper and lower forming rollers 14 to 17 with a heater is used for sandwiching and bonding the two shield tapes 12 and 13 from above and below at a line pitch P.
In the moving direction A between the signal lines 2 and 3 and the drain wire 4.
A plurality of sets (four sets in this example) are arranged at regular intervals. Each of the forming rollers 14 to 17 is rotated in the moving direction A at a speed corresponding to the moving speed of the signal lines 2 and 3 and the drain wire 4.

Each of the signal lines 2 and 3 and the drain wire 4
Is supplied from the supply reel and moved in the length direction A at the same speed as in the conventional case. Further, supply reels 12A and 13A for shield tapes 12 and 13 are provided above and below the signal lines 2 and 3 and the drain wire 4, respectively. Is moved in the length direction A at the same speed above and below each of the signal lines 2 and 3 and the drain wire 4.

The first pair of upper and lower forming rollers 14, 14 of the above-mentioned forming rollers 14 to 17 have a semicircular shape substantially coinciding with the outer periphery of the central signal line 3, as shown in detail in FIG. Pitch grooves 14a, 14a, and the relief grooves 14 largely released from the outer periphery of the signal line 2 and the drain wire 4 on both sides.
b, 14b.

In the forming rollers 14, 14, only the center signal line 3 is positioned by the pitch grooves 14a, 14a.
3 is sandwiched from above and below and thermally bonded while being pressed. It is preferable that the pressure is weak and the temperature is low. At this stage, the shield tapes 12, 13 are not pressed and thermally bonded to the signal lines 2 and the drain wires 4 on both sides by the escape grooves 14b, 14b at this stage.

A second pair of upper and lower forming rollers 15, 1
Reference numeral 5 denotes semicircular pitch grooves 15a, 15a substantially coinciding with the outer periphery of the central signal line 3, and a flat surface approaching the outer periphery of the signal line 2 and the drain wire 4 on both sides, as shown in detail in FIG. 15c, 15c, and the escape grooves 15b, which have largely escaped from the outer periphery of the signal line 2 and the drain wire 4 on both sides.
15b.

In the forming rollers 15, 15, only the central signal line 3 is positioned by the pitch grooves 14a, 14a, and two signal lines between the signal line 3 and the signal lines 2 on both sides and the drain wire 4 are formed. The shield tapes 12, 13 are sandwiched between the flat surfaces 15c, 15c from above and below, and are thermally bonded while being pressed. It is preferable that the pressure is weak to strong and the temperature is medium. The signal lines 2 on both sides
And the drain wire 4 at this stage.
5b and 15b apply pressure to the shield tapes 12 and 13.
Not heat bonded.

Third pair of upper and lower forming rollers 16, 1
Reference numeral 6 denotes semicircular pitch grooves 16a, 16a substantially coinciding with the outer periphery of the central signal line 3, and a flat surface approaching the outer periphery of the signal line 2 and the drain wire 4 on both sides, as shown in detail in FIG. 16c, 16c, and semicircular pitch grooves 16 substantially matching the outer circumferences of the signal lines 2 and the drain wires 4 on both sides.
d, 16d, 16e, 16e, and flat surfaces 16f, 1 projecting outward from the signal lines 2 and the drain wires 4 on both sides.
6f.

In the forming rollers 16, 16, the central signal line 3 is positioned by the pitch grooves 16a, and the signal lines 2 and the drain wires 4 on both sides are connected to the pitch grooves 16d, 16d, 16e, 16e. In the state of positioning, the two shield tapes 12, 13 between the central signal line 3, the signal lines 2 on both sides, and the drain wire 4 are sandwiched from above and below by the flat surfaces 16c, 16c and thermally bonded while pressing. At the same time, two shield tapes 1 protruding outside the signal line 2 and the drain wire 4 on both sides
2 and 13 are sandwiched between the flat surfaces 16f and 16f from above and below and are thermally bonded while being pressed. It is preferable that the pressure is high and the temperature is high.

A fourth pair of upper and lower forming rollers 17, 1
Reference numeral 7 is for finishing, and although not shown in detail, has the same shape as the third pair of upper and lower forming rollers 16, 16.
It is preferable that the pressure and the temperature be the same.

The pressure welding shield wire 11 configured as described above
Next, the operation of the manufacturing apparatus will be described.

In a state where the vertical interval between the pair of upper and lower forming rollers 14 to 17 is widened, the signal lines 2 and 3 and the drain wire 4 are passed at a predetermined line pitch P during this interval. After passing the shield tapes 12 and 13 above and below the drain wires 4 and 3, the interval between the forming rollers 14 to 17 is reduced.

Then, the signal lines 2, 3 and the drain wire 4 and the shield tapes 12, 13 are moved at the same speed in the longitudinal direction A, and the forming rollers 14 to 17 are moved by the signal lines 2, 3, etc. Movement direction A at speed matching speed
Rotate to.

As a result, first, in the first forming rollers 14, 14, the central signal line 3 is
a, 14a, are sandwiched from above and below by two shield tapes 12, 13, and the two shield tapes 12, 13 are pressed while the signal line 3 is being pressed.
Is thermally bonded to the outer periphery of the substrate.

Next, the second forming rollers 15, 15
In the above, two shield tapes 12, 13 between the signal line 2 on both sides of the central signal line 3 and the drain wire 4 are sandwiched from above and below by the flat surfaces 15c, 15c and are thermally bonded while being pressed. Become like

Further, the third forming rollers 16, 16
In a state in which the signal lines 2 and the drain wires 4 on both sides are positioned by the pitch grooves 16d, 16d and 16e, 16e, the two shield tapes 12, 13 are sandwiched from above and below. Shield tape 12,
13 is thermally bonded to the outer periphery of the signal line 3 while being pressed. At the same time, the two shield tapes 12 and 13 projecting outward from the signal line 2 and the drain wire 4 on both sides are sandwiched from above and below by the flat surfaces 16f and 16f, and are thermally bonded while being pressed. .

Finally, the fourth forming rollers 17, 17
In each of the pitch grooves 16a, 16a, 16d, 16
d, 16e and 16e, the two shield tapes 12 and 13 are finish-pressed and thermally bonded to the outer periphery of the central signal line 3, the signal lines 2 on both sides and the drain wire 4, and at the same time, each flat surface 16c , 16c, 16f, 16f, the two shield tapes 12 at the gap between the central signal line 3 and the signal lines 2 on both sides and the drain wire 4 and the protruding portions of the signal lines 2 and the drain wires 4 on both sides. , 13
Will be subjected to finish pressure and heat bonding.

As described above, the two shield tapes 1
By sandwiching the signal lines 2 and 3 and the drain wire 4 from above and below and bonding them with each other, the technology is relatively simpler than the conventional forming dies, and loss and manufacturing defects at the start of sandwiching are reduced. Cost reduction can be achieved.

Also, forming rollers 14-17 with heaters
The two shield tapes 12 and 13 are sandwiched from the top and bottom and adhered to each other to form the shield tapes 12 and 13.
Can be thermally bonded while applying pressure so as to fit the signal wires 2 and 3 and the outer periphery of the drain wire 4, so that the dispersion of the adhesion is reduced and the overlapping end surfaces of the shield tapes 12 and 13 are shifted to the drain wire 4 side. There is no at all.

Further, pitch grooves 14a, 15a, 16a, 16d, 1 for maintaining the pitch P between the signal lines 2, 3 and the drain wire 4 are formed on the forming rollers 14 to 17, respectively.
6e, the signal lines 2, 3 and the drain wires 4 are shielded by the shield tapes 12, 13 in a state where the pitch P between the signal lines 2, 3 and the drain wires 4 is accurately maintained.
And can be bonded.

Further, each of the forming rollers 14 to 17 is
Pitch grooves, that is, relief grooves 14 so that the shield tapes 12 and 13 are sequentially bonded from the center in the width direction to both sides.
Since the shapes of b and 15b are changed, it is possible to thermally bond the shield tapes 12 and 13 while uniformly pressing the shield tapes 12 and 13 to the outer periphery of the signal wires 2 and 3 and the drain wire 4 and the respective gaps.

[0036]

As is clear from the above description, the method of manufacturing the press-contact shielded wire of the present invention is such that the signal wire and the drain wire are sandwiched between two shield tapes from above and below and adhered. The technique is relatively simpler than that of the forming die, and the loss and the manufacturing defect at the start of the sandwiching are reduced, so that the cost can be reduced.

In the apparatus for manufacturing a press-contact shield wire according to the present invention, the two shield tapes are sandwiched from above and below by a forming roller with a heater and adhered to each other. Since heat bonding can be performed while applying pressure so as to conform, variations in adhesion strength are reduced, signal lines and the like are hardly removed from the shield tape, and the possibility of poor connection in an automatic terminal processing machine is reduced. In addition, since the overlapping end surface of the shield tape does not shift to the drain wire side unlike the conventional forming die, there is no possibility that a part of the shield tape on the drain wire side contacts the conductor of the adjacent signal line.

Further, by forming a pitch groove for holding a line pitch between the signal line and the drain wire on the upper and lower forming rollers, the pitch between the signal line and the drain wire can be maintained accurately. Then, the signal wire and the drain wire can be bonded by the shield tape.

A plurality of upper and lower forming rollers are arranged in the moving direction of the signal line and the drain wire, and the upper and lower forming rollers are bonded to the shield tape sequentially from the center in the width direction to both sides. In addition, by changing the shape of the pitch groove, the shield tape can be thermally bonded while being uniformly pressed so as to fit into the outer periphery of the signal line and the drain wire and the respective gaps, so that the variation in the adhesion force is further reduced.

[Brief description of the drawings]

FIG. 1 is a manufacturing apparatus of the present invention, wherein (A) is a plan view,
(B) is a side view.

FIG. 2 is a cross-sectional view of an insulation displacement wire.

FIG. 3 is a cross-sectional view of a press-contact shield wire being formed by a first forming roller.

FIG. 4 is a cross-sectional view of a press-contact shield wire being formed by a second forming roller.

FIG. 5 is a sectional view of a press-contact shield wire being formed by a third or fourth forming roller.

FIG. 6 is a system diagram of a conventional manufacturing process.

FIG. 7 is a plan view of a conventional forming die portion.

[Explanation of symbols]

 2,3 signal wire 4 drain wire 8 sheath 11 pressure shield wire 12,13 shield tape 14-17 forming roller 14a, 15a, 16a, 16d, 16e pitch groove 15c, 16c, 16f flat surface

Claims (4)

[Claims] 1. A press-welding shield characterized in that a signal wire and a drain wire are moved in the longitudinal direction at a predetermined line pitch, sandwiched and adhered by a shield tape from above and below, and then covered with a sheath. Wire manufacturing method. 2. A forming roller with a heater for vertically sandwiching a signal line and a drain wire, which are moved in a length direction at a predetermined line pitch, with a shield tape from above and below. 2. A pressure-shielding wire manufacturing apparatus, wherein a pressure is applied to a shield tape so as to conform to an outer periphery of a signal wire and a drain wire, and the tape is heat-bonded and then covered with a sheath. 3. The apparatus according to claim 2, wherein the upper and lower forming rollers are provided with a pitch groove for maintaining a line pitch between the signal line and the drain wire. 4. A plurality of upper and lower forming rollers are arranged in a moving direction of a signal line and a drain wire, and each of the upper and lower forming rollers sequentially adheres a shield tape from a center in a width direction to both sides. 4. The apparatus according to claim 2, wherein the shape of the pitch groove is changed.