JP2602663Y2 - Conductive wire winding device - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an IC circuit board and a PCB.
The present invention relates to a conductive wire useful for manufacturing a string-shaped anisotropic conductive connector composed of a conductive material formed of a conductive wire and an insulating layer, which is used for connection between the conductive wires, and particularly to a thin metal wire winding device. is there.

[0002]

2. Description of the Related Art As one method of manufacturing the above-described anisotropic conductive connector, a conductive wire, in particular, a thin metal wire (hereinafter, described as an example of a thin metal wire) is rotated on a rubber sheet attached to a rotating drum. A method is used in which the wire is wound while being shifted at a constant interval in the axial direction, and then cut in a direction perpendicular to the winding direction of the thin metal wire. In order to arrange the thin metal wires on this rubber sheet, the thin metal wires wound around the bobbin are wound at a fixed pitch on a rotating drum with the rubber sheet attached, and the bobbin is tightened with a fixed shaft to apply the necessary Metal wire winding machines that provide tension have been used.

[0003]

However, in this conventional winding machine, the rotating drum and the feed table operate synchronously via gears, and the arrangement interval is determined by a combination of gears. In addition, the tension of the thin metal wire fed to the rubber sheet changes depending on how the thin metal wire is wound around the bobbin, the amount of the thin metal wire used, etc. There were problems such as thin wires breaking. Therefore, the purpose of the present invention is to set the arrangement interval of the conductive wires, especially the metal thin wires freely, and to always wind the metal wires at a constant interval with a uniform bite amount and without unevenness. It is an object of the present invention to provide a conductive wire winding device.

[0004]

According to the present invention, a conductive wire winding apparatus according to the present invention feeds a conductive wire, particularly a thin metal wire, onto a rubber sheet attached to a rotating drum at a constant speed and keeps a constant amount in the direction of the rotating shaft. In a device for winding while shifting at intervals, a tension control device is provided at the feeding part of the conductive wire, especially the thin metal wire, and the servo is provided for each of the rotating drum and the moving means of the winding position and the conductive wire, especially the thin metal wire feeding roll. A motor is provided, and the servo motors are operated synchronously with each other. That is, in the conductive wire of the present invention, particularly the metal thin wire winding device, a servomotor is provided on each of the rotating drum, the feed table for moving the winding position, and the conductive wire, especially the metal wire feeding portion, and the respective servomotors are interconnected. In addition to allowing the winding interval, which had been done by combining gears, to be set to an arbitrary interval by an external input, the tension applied to the conductive wire, especially the thin metal wire, can be set to the conductive wire. In particular, it has been stabilized by a tension control device provided at a thin metal wire feeding section, and has succeeded in winding a conductive wire, particularly a thin metal wire, uniformly into a rubber sheet.

Hereinafter, the present invention will be described in detail with reference to the drawings, taking a case where a thin metal wire is used as a conductive wire as an example. The conductive wire used in the present invention may be a metal (fine) wire, a glass fiber that has been subjected to a conductive treatment on its peripheral surface, a carbon fiber, a conventionally known conductive wire, or a conductive fine wire. 1 to 3 show one embodiment of the conductive wire winding device of the present invention by a plan view, a front view and a side view, respectively. In the drawing, 1 is a thin metal wire made of, for example, a nickel wire having a diameter of 30 μm, 2 is a bobbin around which the wire is wound, 3 is a shaft for mounting the bobbin 2, and 4 is a felt-made material for removing oil adhering to the thin metal wire with alcohol or the like. Degreasing equipment,
5 is a pair of upper and lower rolls (for example, made of rubber of φ: 40 mm) for feeding the thin metal wire 1 from the bobbin 2 at a constant speed;
6 is the servo motor.

Reference numeral 7 denotes a tension control device for keeping the penetration of the thin metal wire 1 into the silicone rubber sheet on the rotating drum at a constant level. This is done by opening several holes of 0.5 mm at regular intervals on the bottom and side surfaces of the slide part, blowing out ² kgf / cm ² of pressurized air from the holes, and keeping the weight 8 floating in the air slide. , Which are not affected by the load due to contact or friction with the bottom and side surfaces (for example, those manufactured by Shinpo Kogyo Co., Ltd.)
According to the thickness of the thin metal wire 1, for example, 160 mm for φ: 40 μm so that the display tension of the tension measuring device 9 is always constant.
g, φ: 30 μm, the load of the weight 8 is changed to 60 g, and the angle of the tension control device 7 is changed by the angle adjustment handle 10 in the range of 30 ± 5 ° (for example, the thickness of the thin metal wire 1 is 60 g). When φ is 40 μm or 30 μm, the angle is 30 °). Here, 11, 12, 13 and 14 are feed pulleys, respectively. Reference numeral 15 denotes a feed table on which the above-mentioned members are mounted and moves at a constant speed in the axial direction of a rotary drum described later, 16 denotes a servomotor thereof, and 17 denotes a speed reducer. Reference numeral 18 denotes a rotating drum, and 19 denotes a rubber sheet made of, for example, silicone rubber having a thickness of 100 μm wound and affixed to its surface. The tip of the thin metal wire 1 is fixed to a point on the sheet 19 and wound. Start taking. Reference numerals 20 and 21 denote a reduction gear and a servomotor of the rotating drum 18, respectively.

The rotational speed of each of the servo motors 21, 16 and 6 of the rotary drum 18, the feed table 15 and the roll 5 for feeding the thin metal wire 1 is determined by the rotation speed of the rotary drum 18 and the arrangement pitch of the thin metal wire 1. Is determined, the rotation speed of the servomotors 16 and 6 of the feed table 15 and the feeding roll 5 is calculated and determined by a control device (not shown). The rotating drum 18 and the feed table 15 are rotated by a speed reducer 20 (gear ratio:
1/11) and reducer 16 of feed table 15 (gear ratio: 1/5)
0) is combined with the respective servo motors 21 and 16. By adjusting the rotation speed of each motor in this way, the rubber sheet 19 adhered to the rotary drum 18 can be removed from the rotary drum 18 after the winding of the thin metal wire 1 and the metal sheet having no curl can be removed. The thin wire 1 is cut into the rubber sheet 19 at regular intervals in the same direction to form a single flat sheet. Normally, the tension of the thin metal wire 1 is determined by the tension control device 7 as described above. However, if the tension is too high, the metal wire 1 will bite into the rubber sheet 19 too deeply. Due to the tension of 1, the rubber sheet 19 curls and does not become a flat sheet, and if the tension is too weak, the thin metal wire 1 is separated from the rubber sheet 19, and the rubber sheet in which the thin metal wires 1 are arranged in parallel. 19 can not be.

[0008]

In the conductive wire of the present invention, particularly the thin metal wire winding device, the thickness is 3 μm to 1.0 mm, preferably 100 to 300 mm.
A silicone rubber sheet 19 of μm is adhered to the surface of the rotating drum 18, and the conductive wire wound around the bobbin 2, in particular, the thin metal wire 1 is fed out and shifted by a predetermined amount in parallel with the axial direction of the rotating drum 18. Cut into 19 sides and wind. Since the silicone rubber sheet 19 is not vulcanized and easily penetrates the conductive wire, particularly the thin metal wire 1, a certain tension is applied through a weight 8 placed in an air slide.
Wrap around the rotating drum 18. In order to further adjust the biting amount, the weight 8 is changed or the load of the weight 8 is changed by changing the angle of the air slide. The amount of biting of the conductive wire, especially the fine metal wire, differs depending on the use condition. For example, a weight to be applied as a tension load at a biting amount of about 1/3 to 2/3 of the diameter of the conductive wire, particularly the fine metal wire, is arranged. Pitch P is 0.04 ≦ P <0.1mm,
When the diameter of conductive wire, especially metal thin wire is 30 μm, 50 ~
70 g, 0.1 ≦ P <1.0 mm, 150-170 g for a conductive wire, particularly a metal wire having a diameter of 40 μm. When changing the angle of the air slide, the angle is in the range of 25 to 35 °.

The present invention uses a servomotor for each of the rotating drum 18, the feed table 15, and the conductive wire, particularly, the thin metal wire feeding roll 5, and operates the motors synchronously. Drum speed and array width can be set. Further, the pitch can be changed midway. For example, in the case of a rotating drum 18, a rubber sheet 19 having a size of about 300 mm × 600 mm is connected directly to a reduction gear (reduction ratio: 1/11) 20 to a servo motor 21 having a rated output of 3.5 kW and a torque of 170 kg · cm. Use
Using HA-SA352 (Mitsubishi Electric, trade name) as the servo motor 21 and rotating at a constant speed of 1650 rpm, using ERK-NB-11D (Shinpo Industry, trade name) as the speed reducer 20 Fifteen
A constant speed rotation of 0 rpm was performed. The feed table 15 uses a servo motor 16 with a rated output of 0.2 kW and a torque of 9.8 kg · cm directly connected to a reducer (reduction ratio: 1/50) 17.
HA-SA22 (Mitsubishi Electric Corp., trade name) as 16, reducer 17
The one having a reduction ratio of 1/50 manufactured by Harmonic was used. For the conductive wire feeding roll 5, a servo motor HA-FE053 (trade name, manufactured by Mitsubishi Electric Corporation) 6 having a rated output of 0.05 kW and a torque of 1.2 kg · cm may be used. In the case of 0.1 mm pitch wiring, the servo motor 16 is set at 150 rpm, the speed reducer 17 is set at 3 rpm,
With 0.2mm pitch wiring, 300rpm of servo motor 16 and reduction gear
17 at 6 rpm. The feeding roll 5 is 0.1 mm,
After wiring at a pitch of 0.2 mm, the wires rotate at a constant speed of 750 rpm, and when operating synchronously with each other, the conductive wires are wound around the rotating drum at the optimum speed. Array pitch: 0.04 to 1.00
It is possible to wind in the range of mm.

The weight 8 of the air slide portion also has a role of changing the speed of the servo motor 6 for feeding out the conductive wire. Sensors are installed above and below the slide portion, and when the weight detects the upper limit sensor, for example, the feed servo motor changes the speed by 10% of the set speed, and when the lower limit sensor is detected, changes the speed by 10% of the set speed. The feeding tension control device 7 is provided with a conductive wire from the bobbin 2, particularly a thin metal wire 1.
The feeding servo motor 6 is rotated at a constant speed to feed a conductive wire, in particular, a thin metal wire 1 by a fixed amount, is wound on a weight 8 of an air slide portion, and is wound around a rotating drum 18. At this time, the delivery roll 5
The conductive wire, especially the thin metal wire 1, is kept at a constant tension by the weight 8 of the air slide portion, and is stably wound around the rubber sheet 19 on the surface of the rotary drum 18 with a constant bite amount.

An operator sets and inputs numerical values of the arrangement pitch, the wiring width, and the rotating drum speed on a touch panel (not shown) screen. The input set values are calculated inside a controller (sequencer, not shown) to determine the speed and address of the rotary drum servomotor 21 and the feed table servomotor 16. The data calculated by the controller is transferred to a servo motor positioning unit (pulse train output unit, not shown), and a pulse output from this positioning unit is sent to a servo motor amplifier (not shown).
Turn the servo motor. In other words, it has two independent control systems, and each servomotor can perform high-precision positioning. Therefore, one of the two servomotors is kept constant, and the speed of the other servomotor is changed. The pitch is changing.

[0012]

[Effect of the Invention] The conductive wire winding device of the present invention is a rotating drum,
Servo motors were used for each of the feed table and the conductive wire feeding roll, and the servo motors were operated synchronously with each other, which allowed for variations in the arrangement pitch. In particular, the amount of biting of the fine metal wire becomes stable and uniform, and the connector obtained by shredding this rubber sheet has extremely excellent characteristics. FIG. 4 illustrates a connector obtained by the conductive wire winding device of the present invention, and FIG. 4 (a) shows the surface of an insulating rubber sheet (one side is shown in the figure, but it may be provided on both sides. Good)
A sheet-like connector in which conductive wires are embedded parallel to each other at an appropriate depth (when the diameter of the conductive wire is φ, h / φ = 1.02 to 0, where h represents the burying depth of the conductive wire) , FIG.
FIG. 4 (b) shows another example in which another insulating sheet is laminated on the surface of the connector obtained in FIG. 4 (a), and then sliced or pushed off in a direction perpendicular to the direction of the conductive lines, thereby defining the conductive lines. FIG. 4 (c) shows a case where four conductive wires are arranged in a block shape at intervals.
FIG. 4D shows a predetermined pattern (pitch is a, a, b, c,
FIG. 4 shows an arrangement in which conductive lines are arranged as shown in FIG.
(E) shows that the conductive wires penetrate or do not penetrate in the thickness direction of the sheet and are arranged in a predetermined arrangement or randomly.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a conductive wire winding device of the present invention.

FIG. 2 is a front view of the embodiment shown in FIG.

FIG. 3 is an explanatory side view of the embodiment shown in FIG. 1;

4 (a) to 4 (e) are perspective views showing different modes of the connector obtained by the device of the present invention.

[Explanation of symbols]

1 ‥ metal wire, 2 ‥ bobbin, 3 ‥ shaft,
4 ‥ degreasing device, 5 ‥ feeding roll, 6,
16, 21 ‥ servo motor, 7 ‥ tension control device,
8 ‥ weight, 9 ‥ tension measuring instrument, 10 ‥ angle adjustment handle, 11, 12, 13, 14 ‥
Feed pulley, 15mm feed table, 17, 20
‥ reducer, 18 ‥ rotating drum, 19 ‥ rubber sheet.

Claims (1)

(57) [Scope of request for utility model registration] 1. A rubber sheet attached to a rotating drum,
In a device for feeding a conductive wire at a constant speed and winding it while shifting it at a constant interval in the direction of the rotating shaft, a tension control device is provided at a feeding portion of the conductive wire, a rotating drum, a moving means of a winding position, and a roll for feeding the conductive wire. A conductive wire winding device, wherein a servo motor is provided for each of the above, and the servo motors are operated synchronously with each other.