JP2785646B2 - Manufacturing method of flexible wiring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used to supply power to a linear motor, and is based on two copper foils forming two separate wiring paths of a positive pole and a negative pole. The present invention relates to a method for manufacturing a flexible wiring bonded on a film.

[0002]

2. Description of the Related Art Conventionally, a linear motor has been used for a device for automatically opening and closing a curtain of a one-box car, a curtain for a house window, and the like. This linear motor is a system in which a small movable coil runs by itself in a rail composed of a flexible wiring and a magnet. The linear motor has a simple structure, is easy to mount and the like, is convenient, and is therefore widely used. FIG. 8 is a cross-sectional view showing the configuration of the linear motor. A flexible wiring 11 for supplying power to the left inner surface of the rail cover 12 having a U-shaped cross section is fixedly provided. Further, magnetized ferrite magnets 14 are arranged and fixed on the right inner surface of the rail cover 12. A movable coil 13 composed of two coils is slidably mounted between the flexible wiring 11 and the ferrite magnet 14.

According to the magnetization pitch of the ferrite magnet,
An electric current is supplied from the flexible wiring 11 patterned so as to generate a thrust in the same direction to the movable coil 13 via the current collecting brush 10 . Here, the movable coil 13
Can be switched by changing the polarity of the current. The flexible wiring 11 used in such a linear motor is characterized in that two separate copper foils of a positive pole and a negative pole are adhered to the base film 15. Here, in order to operate the movable coil 13 smoothly, the flexible wiring 11 and the ferrite magnet 1
4 needs to be attached with high accuracy.

Next, a conventional method for manufacturing the flexible wiring 11 will be described. Conventional methods include a fred method and an etching method. FIG. 10 shows a flexible wiring 11 manufactured by the Fred method, and FIG. 9 shows a manufacturing process of the flexible wiring 11. First, the stainless steel belt is washed and polished to remove the previously attached resist. Next, a resist is printed by circuit pattern silk printing, and the resist is cured. At this time, the resist is printed on portions of the circuit pattern where copper foil is not required. Next, a copper foil pattern is formed on the stainless steel belt by ultra-high speed plating. Here, copper plating is not applied to the portion where the resist is applied since the portion has no conductivity. Next, the stainless steel belt and the base film are brought into close contact with each other, and the copper foil pattern formed on the stainless steel belt is transferred onto the base film. In the base film,
Since the adhesive is applied in advance, the copper foil pattern is adhered on the base film.

Next, the adhesive is cured to securely fix the copper foil pattern on the base film. Next, as shown in FIG. 10, a plurality of flexible wirings 11 printed on one sheet are subjected to surface treatment for rust prevention. Next, the guide holes 17 used for alignment with the magnets are punched out by a linear motor and slit processing is performed for each one. At this time, the position of the guide hole 17 is already
1 is printed on, and an operator visually performs the drilling with a magnifying glass. Finally, a final inspection is performed. Although the Fred method among the conventional methods has been described above, the etching method is a method in which a copper foil is adhered to the entire base film, a circuit pattern is printed by circuit pattern silk printing, and the copper foil other than the circuit pattern is removed by etching. The other method is the same as the Fred method, and the description is omitted.

[0006]

However, the Fred method and the etching method have the following problems. (1) In both cases, it was difficult to accurately manufacture the long flexible wiring 11. The reason is that, when manufacturing a long flexible wiring 11, the circuit pattern formed by a photographic film is enlarged and the printing is performed by dividing the circuit pattern into two or more times when manufacturing the long flexible wiring 11 due to a limitation of a device for printing on the base film. This is because the error occurs at the joint. Therefore, there is a particular problem in the method of manufacturing the flexible wiring 11 used for a linear motor requiring a long rail. (2) In the Fred method, it is necessary to provide a polishing step every time in order to maintain the surface roughness of the stainless steel belt, which causes an increase in cost. (3) In addition, the etching method requires treatment of waste liquid, and has a problem in that the entire equipment becomes large and cost increases.

Further, in the conventional method of drilling the reference hole of the flexible wiring 11, the reference hole is displaced due to a difference in the skill of the operator. If the reference hole is displaced, a displacement occurs between the flexible wiring 11 and the magnet in the linear motor, so that there is a problem that the movable coil 13 generates a stick slip and the movement is not smooth.

The present invention has been made in order to solve the above-mentioned problems, and a method of manufacturing a flexible wiring 11 for manufacturing a long flexible wiring 11 used in a linear motor with high accuracy and at low cost. The purpose is to provide.

[0009]

SUMMARY OF THE INVENTION In order to solve the first problem, a method for manufacturing a flexible wiring according to the present invention comprises a base film and a base film which is in close contact with the base film and has no connection.
A method of manufacturing a flexible wiring comprising a copper foil forming a separate wiring path as described above, wherein a wiring portion is formed by punching a copper foil to form a wiring path while leaving a connecting portion in the two or more separate wiring paths. A first punching step in which the path is integrated, a bonding step in which the copper foil punched in the first punching step is bonded to the base film, and a connection of the copper foil punched so that the wiring path is integrated. And a second punching step of punching the part together with the base film to which the copper foil is adhered.

According to another aspect of the present invention, there is provided an apparatus for manufacturing a flexible wiring, comprising a transparent or translucent base film, and a copper foil which is in close contact with the base film to form a wiring path. An apparatus for manufacturing a flexible wire in a scale, comprising: a transport unit that transports the flexible wiring in a longitudinal direction; a first transmission type photodetector that detects a copper foil of the flexible wiring; and a copper foil of the flexible wiring. In addition, a slit having a short side in the transport direction, a second transmission type photodetector provided in the middle of the light emitting and receiving device, a punching machine for punching a positioning hole in the flexible wiring, and a first transmission type photodetector From the output and the output of the second transmission type photodetector, the stop position of the flexible wiring is detected, the transporting means is stopped, and a punching machine punches a positioning hole in the flexible wiring.

[0011]

The method for manufacturing a flexible wiring according to the present invention having the above configuration will be described in order. (1) In a first punching step, a copper foil supplied in a long shape is punched by a press machine to form a wiring path. At this time, punching is performed so that the wiring path is integrated except for the connection part in the wiring path divided into two, the positive pole pattern and the negative pole pattern. (2) In the bonding step, the copper foil punched in the first punching step is superimposed on a base film coated with a heat-sensitive adhesive and heated by a bonding machine to bond the copper foil to the base film. I do. (3) In the second punching step, the plus-pole pattern and the minus-pole pattern are separated by punching out the connection portion of the copper foil punched so that the wiring path is integrated with the base film to which the copper foil is adhered. I do.

(4) The flexible wiring conveyed in the longitudinal direction by the conveying means is connected to the first transmission-type photodetector for detecting the copper foil of the flexible wiring, and in the conveying direction for detecting the copper foil of the flexible wiring. A slit having a short side is stopped at a predetermined position by an output from a second transmission type photodetector provided in the middle of the light emitting and receiving device. (5) Using a punching machine, a positioning hole is formed in the flexible wiring stopped at a predetermined position. Thereby, a guide hole can be accurately formed in the copper foil pattern.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a flexible wiring 11 according to an embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 5 shows the shape of the flexible wiring 11. A positive electrode copper foil pattern 21 and a negative electrode copper foil pattern 22 are bonded on the long base film 15. The positive electrode copper foil pattern 21 and the negative electrode copper foil pattern 22 do not have a connection part. Further, pilot holes 18 are formed in the flexible wiring 11 at predetermined intervals. FIG. 1 is a conceptual diagram showing a manufacturing process of the flexible wiring 11. The copper foil 16 is supplied to the process as a copper foil drum 24 in a wound state.

The copper foil 16 is drawn out to the transfer line, and the first female mold 25a and the first male mold 25b in the first punching process are provided.
By this, it is punched into the shape shown in FIG. That is, the U-shaped punches 19 are alternately and continuously formed, and at the same time, the pilot holes 18 are punched at predetermined intervals. Next, the copper foil 1
6 is conveyed. Thereby, the copper foil 16 can be conveyed at an accurate interval with respect to the first punching dies 25a and 25b, and the U-shaped punching 19 can be formed at an accurate interval. Here, the positive copper foil pattern 21 and the negative copper foil pattern 22 are connected to each other at a connection portion (U-shaped punching).
19 , the copper foil 16 can be transported while maintaining the mutual positional relationship of the U-shaped punching 19.

Next, the base film 15 is supplied from a base film drum 26. Here, a heat-sensitive adhesive is applied to a surface of the base film film 15 that contacts the copper foil 16. Then, by being heated by the bonding machine 27 including a pair of rollers, the adhesive is melted and the copper foil 16 is bonded to the base film 15.
This state is shown in FIG. FIG. 3B shows a BB cross-sectional view thereof. Next, by the second female mold 28a and the second male mold 28b in the second punching step, FIG.
As shown in the figure, the connection punching 20 is punched. Here, as shown in FIG. 4B, the connection portion punching 20 punches out both the copper foil 16 and the base film 15 at the same time. Thereby, the plus copper foil pattern 21 and the minus copper foil pattern 22 are electrically separated. Base film 15 and copper foil 16 in second punching step
Is positioned at the end of the base film 15 in the horizontal direction, and is performed by a CCD camera or the like (not shown) in the flow direction.

Next, the base film 15 having the copper foil pattern formed thereon is wound around a drum 29. The reason why the base film 15 on which the copper foil pattern is formed is once wound around a drum is that the required length of the flexible wiring 11 differs depending on the type of the linear motor. Next, a process of cutting the base film 15 on which the copper foil pattern is formed into a predetermined length and punching out the guide holes 23 used for alignment with the magnet by the linear motor will be described.

As shown in FIG. 6, a base film 15 having a copper foil pattern formed thereon is transported from a drum 29 by a pair of transport rollers 38. In order to detect the position of the base film 15 at the transport position of the base film 15,
A slit sensor 30 as a second transmission type photodetector and a spot sensor 31 as a first transmission type photodetector are provided. A punching machine 32 for punching the guide hole 23 and a cutter 33 for cutting the base film 15 are provided at a predetermined distance downstream of the two sensors.

Here, a slit having a width of 1.0 mm in the transport direction is attached to the light emitting surface of the light emitting device 30a and the light receiving surface of the light receiving device 30b constituting the slit sensor 30. The slit detects the vertical slit 37 in FIG. The spot sensor 31 detects the upper horizontal slit 36 in FIG. An amplifier 34 is connected to each of the slit sensor 30 and the spot sensor 31. The amplifier 34 is connected to the relay 35. Next, a position detection method will be described. Slit sensor 3
The output of 0 is shown in FIG. 7B, and the output of the spot sensor 31 is shown in FIG. 7C. Since the base film 15 is transparent or translucent, both sensors are at the Hi level where there is no copper foil 16.

Since there are two vertical slits 37 in one pattern, the output of the slit sensor 30 has two peaks 41 and 42 in one pattern. On the other hand, by taking the AND with the output 43 of the spot sensor 31,
41 can be taken as the output of the vertical slit as a reference. That is, after counting a predetermined number of patterns,
When the AND of the slit sensor 30 and the spot sensor 31 is detected, the distance L from the slit sensor 30 stored in advance to the guide hole punching machine 32 is transported, and the base film 15 is stopped. Then, the guide holes 23 are formed by the guide hole punching machine 32. At this time, the base film 15 is cut by the cutter 33. Thereby, the flexible wiring 11 having a predetermined length is provided.
Is formed.

As described in detail above, the method of manufacturing the flexible wiring 11 according to the present embodiment is as follows. First, the flexible wiring 11 is punched in a state where the connecting portion is left in two separate wiring paths of the positive electrode pattern and the negative electrode pattern. Since the connecting portion of the copper foil is punched after the copper foil is adhered to the base film, the copper foil pattern can be punched with high precision even if the flexible wiring 11 becomes long, and a linear motor with high precision can be obtained. Can be manufactured.

The apparatus for manufacturing the flexible wiring 11 according to the present embodiment detects the position of the flexible wiring based on the output of the spot sensor 31 and the slit sensor 30 for detecting the copper foil of the flexible wiring, and pierces the guide hole 23. Therefore, the guide hole can be accurately drilled, and a highly accurate linear motor can be manufactured.

The embodiments of the present invention are not limited to the above embodiments, and various applications are possible. For example, in the present embodiment, the base film 15 is punched together with the copper foil 16 in the second punching step. However, it is also possible to leave only the copper foil 16 by punching and removing the base film 15 by a half-cut press. is there.

[0023]

As is apparent from the above description, according to the method of manufacturing a flexible wiring of the present invention, when a copper foil is punched to form a wiring path, a connecting portion is connected to two or more separate wiring paths. A first punching step of punching out so that the wiring path is integral with leaving a bonding step of bonding the copper foil punched in the first punching step to the base film,
A second punching step of punching a joint portion of the copper foil punched so that the wiring path is integral with a base film to which the copper foil is adhered, so that even if the flexible wiring 11 becomes long, A pattern can be accurately punched out, and a highly accurate linear motor can be manufactured.

Further, the apparatus for manufacturing a flexible wiring according to the present invention includes a transporting means for transporting the flexible wiring in the longitudinal direction, a first transmission type photodetector for detecting the copper foil of the flexible wiring, and a copper foil for the flexible wiring. To detect, a second transmission type photodetector in which a slit having a short side in the transport direction is provided in the middle of the light emitting and receiving device, a punching machine for punching a positioning hole in the flexible wiring, and a first transmission type light Based on the output of the detector and the output of the second transmission type photodetector, the stop position of the flexible wiring is detected, the transporting means is stopped, and a punching machine is used to punch a positioning hole in the flexible wiring. Holes can be accurately drilled,
An accurate linear motor can be manufactured.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing steps of a method for manufacturing a flexible wiring according to one embodiment of the present invention.

FIG. 2 is a plan view showing a copper foil punched in a first punching step.

FIG. 3 is a view showing a flexible wiring bonded in a bonding process.

FIG. 4 is a view showing a flexible wiring punched in a second punching step.

FIG. 5 is a plan view showing a configuration of a flexible wiring.

FIG. 6 is a conceptual diagram showing a configuration of a guide hole punching equipment according to an embodiment of the present invention.

FIG. 7 is an explanatory diagram showing an output of a position sensor.

FIG. 8 is a sectional view showing a configuration of a linear motor.

FIG. 9 is a conceptual diagram showing steps of a conventional method of manufacturing a flexible wiring by the Fred method.

FIG. 10 is a plan view showing a configuration of a flexible wiring in an intermediate step of a conventional manufacturing method by the Fred method.

[Explanation of symbols]

 Reference Signs List 15 base film 16 copper foil 25 first punching machine 27 bonding machine 28 second punching machine 30 slit sensor 31 spot sensor 32 guide hole punching machine 33 cutter

Continuation of the front page (56) References JP-A-4-367293 (JP, A) JP-A-58-106991 (JP, A) JP-B-46-34543 (JP, B1) (58) Fields investigated (Int) .Cl. ⁶ , DB name) H05K 3/20 H01B 13/00 503 H05K 3/00

Claims (3)

(57) [Claims] (1) a transparent or translucent base film,
At a predetermined pitch in the longitudinal direction by being in close contact with the base film
Having a copper foil forming a wiring pattern that appears repeatedly
In the method for producing a long flexible wiring , each of the wiring patterns of the copper foil of the flexible wiring
Has a long hole formed in the longitudinal direction and a shape perpendicular to the longitudinal direction.
A first transmission-type photodetector for detecting the slot when the flexible wiring is transported in the longitudinal direction.
And the second transmission type light detection for detecting the slit hole
When the detector detects the slit hole, it is determined to be the predetermined position.
And a step of positioning the flexible wiring. 2. The flexible wiring according to claim 1,
In the manufacturing method, when forming the wiring path by punching the copper foil,
The wiring is performed by leaving a connecting portion in the wiring path divided into two or more.
The first punching process, where the path is integrated
And the copper foil punched in the first punching step
A bonding step of bonding to a film, and a series of copper foil punched out so that the wiring paths are integrated.
The joint is punched together with the base film to which the copper foil is bonded.
And a second punching step . 3. A transparent or translucent base film;
A copper foil that is closely attached to the base film to form a wiring path
In manufacturing equipment for long flexible wiring with
Te, conveying means for conveying said flexible wiring in the longitudinal direction
And a first transmission type optical detector for detecting the copper foil of the flexible wiring.
And the transport method to detect the copper foil of the flexible wiring.
A slit with a short side is provided in the middle of the
And a punching for piercing a positioning hole in the flexible wiring.
And the output of the first transmission type photodetector and the second transmission type photodetector
The stop position of the flexible wiring is detected from the output of the
Out, and stop the transporting means.
Drilling a positioning hole in the flexible wiring
A flexible wiring manufacturing apparatus characterized by the above-mentioned.