JP6901066B2 - Flexible printed wiring board manufacturing method and flexible printed wiring board manufacturing equipment - Google Patents

Description

The present invention relates to a method for manufacturing a flexible printed wiring board and an apparatus for manufacturing a flexible printed wiring board.
This application claims priority based on Japanese application No. 2016-22408 filed on November 17, 2016, and incorporates all the contents described in the Japanese application.

Flexible printed wiring boards are often used in electronic devices. With the recent miniaturization of electronic devices, small flexible printed wiring boards are often used inside electronic devices.

Such a flexible printed wiring board is formed by arranging a plurality of conductive patterns of a desired flexible printed wiring board on a large-sized base film, and cutting out each flexible printed wiring board by punching using a punch and a die. (See Japanese Patent Application Laid-Open No. 6-132618).

In the present specification, each flexible printed wiring board to be punched is referred to as a flexible printed wiring board piece, and a flexible printed wiring board having a conductive pattern of a plurality of flexible printed wiring board pieces formed on a base film is called a flexible printed wiring board piece. Called a sheet.

Japanese Unexamined Patent Publication No. 6-132618

The method for manufacturing a flexible printed wiring board according to one aspect of the present invention is a method for manufacturing a flexible printed wiring board in which a plurality of flexible printed wiring board pieces are cut out from one flexible printed wiring board sheet by punching with a die and a punch. The step of holding the flexible printed wiring board sheet with the plate jig, the step of positioning the plate jig with respect to the die, and the step of punching the flexible printed wiring board sheet with the punch. The positioning step and the punching step are repeated a plurality of times by shifting the position of the plate-shaped jig with respect to the die.

The flexible printed wiring board manufacturing apparatus according to another aspect of the present invention is a flexible printed wiring board manufacturing apparatus for cutting out a plurality of flexible printed wiring board pieces from one flexible printed wiring board sheet, and is a die and the flexible printed wiring board manufacturing apparatus. It includes a punch corresponding to the die and a plate-shaped jig that can be arranged at a plurality of positions on the die and holds the flexible printed wiring board sheet.

FIG. 1 is a schematic cross-sectional view showing an apparatus for manufacturing a flexible printed wiring board according to an embodiment of the present invention. FIG. 2 is a schematic plan view of a flexible printed wiring board manufacturing apparatus according to an embodiment of the present invention.

[Issues to be solved by this disclosure]
When forming a large number of flexible printed wiring board pieces on one flexible printed wiring board sheet, the flexible printed wiring board pieces are often designed to be small and the absolute value of the margin outside the conductive pattern is also small. Therefore, relatively high accuracy is required for the punching process for separating the flexible printed wiring board pieces. However, as the number of flexible printed wiring board pieces formed on one flexible printed wiring board sheet increases, the swell of the flexible printed wiring board sheet and the flexibility of using a metal punch and a die and a resin base film are used. Due to the difference in the coefficient of thermal expansion from the printed wiring board sheet, the positional deviation between the outer edge of the flexible printed wiring board piece in design and the outer edge of the punch tends to be relatively large.

In response to such a problem, when mass-producing flexible printed wiring board pieces, for example, using image processing technology or the like, one or a small number of flexible printed wiring board sheet-shaped pieces can be made into flexible printed wiring board pieces. On the other hand, it is also possible to construct a system in which the steps of positioning the punch and the die and punching are repeated. However, if the production volume of the flexible printed wiring board pieces is not sufficient, such capital investment cannot be made.

Therefore, the flexible printed wiring board sheet can be positioned at a plurality of positions with respect to the die. Specifically, there is a method in which a plurality of sets of positioning holes for fitting the positioning pins projecting on the die are formed on the flexible printed wiring board sheet, and one flexible printed wiring board sheet is punched in a plurality of times. Will be adopted.

As described above, when the flexible printed wiring board sheet is repositioned with respect to the die each time the punching process is performed, it is necessary to take out the separated flexible printed wiring board pieces for each punching process, so that the manufacturing efficiency is improved. not good. Further, if the flexible printed wiring board sheet is moved a plurality of times, the flexible printed wiring board sheet may be accidentally damaged during operations such as inserting and removing the positioning pin, and the manufacturing efficiency is further suppressed.

Therefore, it is an object of the present invention to provide a method for manufacturing a flexible printed wiring board and an apparatus for manufacturing a flexible printed wiring board, which can manufacture small pieces of a flexible printed wiring board relatively efficiently.

[Effect of the present disclosure]
According to the present disclosure, a small piece of a flexible printed wiring board can be manufactured relatively efficiently.

[Explanation of Embodiments of the Present Invention]
(1) The method for manufacturing a flexible printed wiring board according to one aspect of the present invention is a flexible printed wiring board in which a plurality of flexible printed wiring board pieces are cut out from one flexible printed wiring board sheet by punching with a die and a punch. The flexible printed wiring board sheet is punched out by the steps of holding the flexible printed wiring board sheet with a plate jig, positioning the plate jig with respect to the die, and punching the flexible printed wiring board sheet. The positioning step and the punching step are repeated a plurality of times by shifting the position of the plate-shaped jig with respect to the die.

The method for manufacturing the flexible printed wiring board is relatively large while reducing the displacement of the punching edge in each punching process by repeating the positioning step and the punching process a plurality of times by shifting the position of the plate jig with respect to the die. A relatively large number of flexible printed wiring board pieces can be manufactured by using the flexible printed wiring board sheet. In the method of manufacturing the flexible printed wiring board, the flexible printed wiring board sheet is held by the plate jig and the flexible printed wiring board sheet is moved integrally with the plate jig. Is unlikely to hurt. Further, in the method of manufacturing the flexible printed wiring board, since the separated flexible printed wiring board pieces are also moved together with the plate jig, it is not necessary to take out the flexible printed wiring board pieces every time the punching process is performed, and the work efficiency is improved. Excellent for. Therefore, the method for manufacturing the flexible printed wiring board can relatively efficiently manufacture small pieces of the flexible printed wiring board.

(2) The die has a recess into which the plate jig is fitted and a height adjusting member protruding into the recess, and the opening surface of the die and the surface of the plate jig in the positioning step. It is preferable to further include a step of adjusting the protrusion amount of the height adjusting member so that the above-mentioned height adjusting members are arranged on the same plane. By further providing a step of adjusting the protrusion amount of the height adjusting member, the flexible printed wiring board sheet can be kept flat and the punching accuracy can be further improved.

(3) The flexible printed wiring board manufacturing apparatus according to another aspect of the present invention is a flexible printed wiring board manufacturing apparatus for cutting out a plurality of flexible printed wiring board pieces from one flexible printed wiring board sheet. It includes a die, a punch corresponding to the die, and a plate-shaped jig that can be arranged at a plurality of positions on the die and holds the flexible printed wiring board sheet.

The flexible printed wiring board manufacturing apparatus can be arranged at a plurality of positions on the die, and by providing a plate-shaped jig for holding the flexible printed wiring board sheet, a large number of flexible printed wiring board sheets can be formed on a relatively large flexible printed wiring board sheet. Since the unit price of the flexible printed wiring board pieces can be reduced by forming the flexible printed wiring board pieces, and the plurality of flexible printed wiring board pieces are divided into a plurality of groups and punched, the position of the punched edge is obtained. Is relatively accurate. Further, since the flexible printed wiring board manufacturing apparatus holds the flexible printed wiring board sheet with a plate jig and moves the flexible printed wiring board sheet integrally with the plate jig, the flexible printed wiring board sheet is moved at the time of movement. Is less likely to be accidentally hurt. In addition, since the flexible printed wiring board manufacturing apparatus also moves the separated flexible printed wiring board pieces together with the plate-shaped jig, it is not necessary to take out the flexible printed wiring board pieces each time the punching process is performed, and the work efficiency is improved. Excellent for. Therefore, the flexible printed wiring board manufacturing apparatus can relatively efficiently manufacture small pieces of the flexible printed wiring board.

(4) The die has a recess into which the plate jig is fitted and a height adjusting member protruding into the recess, and the opening surface of the die and the surface of the plate jig are flush with each other. It is preferable that the protrusion amount of the height adjusting member can be adjusted so that the height adjusting member is arranged above. Since the die has the recess and the height adjusting member, the flexible printed wiring board sheet can be kept flat and the position accuracy of the punching process can be further improved.

(5) The die may have a positioning pin that fits into the flexible printed wiring board sheet. Since the die has a positioning pin that fits into the flexible printed wiring board sheet, the flexible printed wiring board sheet can be positioned more accurately with respect to the die, so that the positioning accuracy of the punching process can be further improved. ..

[Details of Embodiments of the present invention]
Hereinafter, each embodiment of the present invention will be described in detail with reference to the drawings.

[Flexible printed wiring board manufacturing equipment]
1 and 2 show a flexible printed wiring board manufacturing apparatus according to an embodiment of the present invention. The flexible printed wiring board manufacturing apparatus is an apparatus for cutting out a plurality of flexible printed wiring board pieces P from one flexible printed wiring board sheet S.

The flexible printed wiring board manufacturing apparatus can be arranged at a die 1, a plurality of punches 2 corresponding to the die 1, and a plurality of positions on the die 1, and holds the flexible printed wiring board sheet S. It is provided with a tool 3.

<Flexible printed wiring board sheet>
As shown in FIG. 2, in the flexible printed wiring board sheet S, a conductive pattern (not shown) of a plurality of flexible printed wiring board pieces P is formed, and the outer edge of each flexible printed wiring board piece P is divided into a plurality of times. It is formed so as to separate a plurality of flexible printed wiring board pieces P by punching.

In the flexible printed wiring board manufacturing apparatus, the flexible printed wiring board sheet S immediately before separating the plurality of flexible printed wiring board pieces P is the number of the plurality of flexible printed wiring board pieces P and the number of the flexible printed wiring board pieces P. It has a small connecting portion C extending from a portion and a frame portion F connected to a plurality of flexible printed wiring board individual pieces P via the connecting portion C and holding a plurality of flexible printed wiring board individual pieces P. In other words, the flexible printed wiring board sheet S is formed with a plurality of punched holes H defining the outer edges of the individual flexible printed wiring board pieces P except for the connecting portion C.

Further, the flexible printed wiring board sheet S is one or a plurality of flexible printed wiring board pieces (four surrounded by an alternate long and short dash line in FIG. 2) arranged in a certain pattern corresponding to the die 1 and the punch 2 described later. A plurality of groups G of P are formed. That is, in the flexible printed wiring board sheet S, one piece P of the flexible printed wiring board of one group G is separated by one punching process using the die 1 and the punch 2.

Further, in the flexible printed wiring board sheet S, a plurality of holding holes Q used for holding by the plate jig 3 and a plurality of positioning holes R used for positioning with respect to the die 1 are formed in the frame portion F. ing. A plurality of positioning holes R are formed for each group G of the flexible printed wiring board individual pieces P.

<Die>
The die 1 has a plurality of punch holes 4 through which the punches 2 are inserted, a recess 5 into which the plate jig 3 is fitted, and a height adjusting member 6 projecting into the recess 5. Further, the die 1 has a positioning pin 7 that fits into the flexible printed wiring board sheet S.

(Punch holes)
The punch holes 4 are arranged so as to overlap the connection portion C of the flexible printed wiring board sheet S. That is, the punch holes 4 are formed in a shape and arrangement so that the individual flexible printed wiring board pieces P can be separated by punching the connection portion C of the flexible printed wiring board sheet S.

(Recess)
The recess 5 facilitates positioning of the flexible printed wiring board sheet S held by the plate jig 3 with respect to the die 1 by defining the arrangement of the plate jig 3 on the die 1.

Both ends of the recess 5 in one direction (vertical direction in FIG. 2) are open to the side surface of the die 1 in a plan view. As a result, the plate-shaped jig 3 can be arranged on both sides in one of the above directions in a state of protruding from the die 1 (in FIG. 2, different positions of the die 1 are shown by a two-dot chain line). Further, the concave portion 5 leaves a convex portion 8 in a region near the punched hole 4 so that the edge of the punched hole 4 can come into contact with the flexible printed wiring board sheet S placed on the plate-shaped jig 3. It is formed.

(Height adjustment member)
The amount of protrusion of the height adjusting member 6 can be adjusted so that the opening surface of the punch hole 4 of the die 1 and the surface of the plate jig 3 are arranged on the same plane. As the height adjusting member 6, for example, a plunger screw or the like whose protrusion amount can be adjusted by a screw formed on the outer peripheral surface can be used. By arranging the opening surface of the punch hole 4 of the die 1 and the surface of the plate jig 3 on the same plane by using such a height adjusting member 6, the waviness of the flexible printed wiring board sheet S is reduced. .. As a result, the positional deviation of the connection portion C of the flexible printed wiring board sheet S with respect to the plurality of punch holes 4 is suppressed, and the punching accuracy is improved.

(Positioning pin)
By fitting the positioning pin 7 into the positioning hole R of the flexible printed wiring board sheet S, the connection portion C of the flexible printed wiring board sheet S is more accurately positioned with respect to the punched hole 4 of the die 1. The positioning pin 7 is preferably arranged in a region where the die 1 is in direct contact with the flexible printed wiring board sheet S (typically, a convex portion 8 around the punched hole 4).

<Punch>
Each punch 2 has a shape that fits into the punch hole 4, and is held by a drive mechanism (not shown) so that it can be inserted and removed from the punch hole 4.

<Plate jig>
The plate-shaped jig 3 holds a flexible printed wiring board sheet S and a piece P of the flexible printed wiring board separated from the flexible printed wiring board sheet S, and these hold the flexible printed wiring board sheet S with respect to the die 1. It is used to prevent damage during moving and punching, and to collectively take out the separated flexible printed wiring board pieces P.

The plate-shaped jig 3 has a plurality of holding pins 9 that are fitted into the holding holes Q of the flexible printed wiring board sheet S, respectively.

(Holding pin)
The holding pin 9 positions and holds the flexible printed wiring board sheet S on the plate jig 3. The holding pin 9 is formed by roughly positioning the flexible printed wiring board sheet S so that the positioning pin 7 of the die 1 is fitted into the positioning hole R of the flexible printed wiring board sheet S. Facilitates positioning. That is, the fitting of the holding pin 9 and the holding hole Q has a play, and the positioning pin 7 positions the flexible printed wiring board sheet S more precisely within the range of the play.

<Advantage>
The flexible printed wiring board manufacturing apparatus is provided with plate-shaped jigs that can be arranged at a plurality of positions on the die 1, so that the flexible printed wiring board sheet S can be individually punched by a plurality of punching processes. Since P is separated for each group G, the error in the arrangement of the flexible printed wiring board piece P with respect to the die 1 is relatively small, and the flexible printed wiring board piece P can be cut out relatively accurately.

Further, in the flexible printed wiring board manufacturing apparatus, the flexible printed wiring board sheet S is held by the plate jig 3, and the flexible printed wiring board sheet S is moved integrally with the plate jig 3, so that the flexible printed wiring board sheet S is moved (during movement). Especially when the positioning pin 7 is inserted and removed), the possibility of accidentally damaging the flexible printed wiring board sheet S is small.

Further, in the flexible printed wiring board manufacturing apparatus, the separated flexible printed wiring board piece P is also moved together with the plate jig 3, so that it is not necessary to take out the flexible printed wiring board piece P every time the punching process is performed. , Excellent work efficiency. Therefore, the flexible printed wiring board manufacturing apparatus can relatively efficiently manufacture a small flexible printed wiring board piece P.

[Manufacturing method of flexible printed wiring board]
The method for manufacturing a flexible printed wiring board according to another embodiment of the present invention can be performed using the manufacturing apparatus shown in FIG.

The method for manufacturing the flexible printed wiring board is a method for manufacturing a flexible printed wiring board in which a plurality of flexible printed wiring board pieces P are cut out from one flexible printed wiring board sheet S by punching using a die 1 and a punch 2. ..

Specifically, the method for manufacturing the flexible printed wiring board includes a step of holding the flexible printed wiring board sheet S by the plate jig 3 <holding step> and positioning the plate jig 3 with respect to the die 1. A step <positioning step> and a step of punching the flexible printed wiring board sheet S with the punch 2 <punching step> are provided, and the positioning step and the punching step for one flexible printed wiring board sheet S are for the die 1. The position of the shape jig 3 is shifted and the process is repeated a plurality of times. Further, it is preferable that the method for manufacturing the flexible printed wiring board further includes a step <adjustment step> for adjusting the protrusion amount of the height adjusting member 6.

<Holding process>
In the holding step, the flexible printed wiring board sheet S is arranged on the plate-shaped jig 3 so that the holding pin 9 is inserted into the holding hole Q of the flexible printed wiring board sheet S. As a result, the flexible printed wiring board sheet S can be integrally moved by moving the plate-shaped jig 3. It becomes difficult for bending or the like to act on the flexible printed wiring board sheet S, and it is possible to prevent the flexible printed wiring board sheet S from being damaged during handling.

<Positioning process>
In the positioning step, the plate-shaped jig 3 is arranged in the recess 5, and the positioning pin 7 of the die 1 is fitted into the positioning hole R of the flexible printed wiring board sheet S, whereby one group of the flexible printed wiring board sheet S is formed. The connection portion C for connecting the flexible printed wiring board piece P of G to the frame portion F2 is accurately positioned on the punch hole 4 of the die 1.

<Punching process>
In the punching process, by inserting the punch 2 into the punch hole 4 of the die 1, the connection portion C of the flexible printed wiring board sheet S can be punched out and removed, and a plurality of flexible printed wiring boards in one G can be removed. One piece P is separated from the flexible printed wiring board sheet S (frame portion F).

In the method for manufacturing a flexible printed wiring board, after separating the flexible printed wiring board individual pieces P in one group G in a punching process, the positioning process is performed again to perform the flexible printed wiring board individual pieces in another group G. The plate-shaped jig 3 is positioned with respect to the die 1 by shifting the position of the plate jig 3 so that P is placed on the punch holes 4 of the die 1 (the relative movement of the die 1 is shown by a chain double-dashed line in FIG. 2).

Then, by performing the punching process again, the flexible printed wiring board piece P in the next group G is separated. In the method for manufacturing the flexible printed wiring board, all the flexible printed wiring board pieces of one flexible printed wiring board sheet S are performed by performing the positioning step and the punching step for all the groups G in this way. Separate P.

Here, in the second and subsequent positioning steps, the separated flexible printed wiring board piece P can be moved together with the remaining flexible printed wiring board sheet S while being placed on the plate jig 3. Therefore, the previously separated flexible printed wiring board piece P does not interfere with the next punching process. Therefore, in the method for manufacturing the flexible printed wiring board, all the flexible printed wiring board pieces P of the flexible printed wiring board sheet S are separated, and then the plate-shaped jig 3 is lifted to lift all the flexible printed wiring board pieces. P can be taken out at once, and it is not necessary to take out the flexible printed wiring board sheet S separated at each punching process.

<Adjustment process>
In the adjusting step, the protrusion amount of the height adjusting member is adjusted so that the surface of the plate-shaped jig 3 arranged on the die 1 and the opening surface of the die 1 are arranged on the same plane in the positioning step. .. As a result, the flexible printed wiring board sheet S can be kept flat, the deviation of the relative position between the plurality of flexible printed wiring board pieces P can be suppressed, and the punching accuracy of the flexible printed wiring board pieces P can be improved. .. This adjustment step may be performed by arranging the plate-shaped jig 3 that does not hold the flexible printed wiring board sheet S on the die 1 in advance, and the plate-shaped jig 3 that holds the flexible printed wiring board sheet S in the positioning step. This may be done after the tool 3 is placed on the die 1.

<Advantage>
In the method for manufacturing the flexible printed wiring board, since the plurality of flexible printed wiring board pieces P of the flexible printed wiring board sheet S are separated for each group G, the influence of the undulation of the flexible printed wiring board sheet S is small, and the punching process is performed. The accuracy of the position to be used, that is, the accuracy of the shape of the outer edge of the flexible printed wiring board piece P is high.

Further, since the flexible printed wiring board manufacturing method uses the plate jig 3, the flexible printed wiring board sheet S and the separated flexible printed wiring board individual piece P can be easily handled, resulting in excellent manufacturing efficiency. ..

[Other Embodiments]
It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is not limited to the configuration of the above-described embodiment, but is indicated by the claims and is intended to include all modifications within the meaning and scope equivalent to the claims.

In the flexible printed wiring board manufacturing apparatus, the configuration for positioning the flexible printed wiring board sheet with respect to the plate jig and the configuration for positioning the flexible printed wiring board sheet with respect to the die are not limited to pins, for example. Any configuration such as a frame-shaped guide, a notch, and a convex portion that engages with the notch can be adopted.

Further, in the device for manufacturing the flexible printed wiring board, the positioning pin may be fitted into the positioning hole of the flexible printed wiring board sheet through the through hole of the plate jig.

Further, in the flexible printed wiring board manufacturing apparatus, the configuration for positioning the plate jig with respect to the die is such that the plate jig is fitted to the die as in the recess in the above-described embodiment. The present invention is not limited to, for example, the opening of the plate jig may be simply fitted to the convex portion around the punched hole of the die, the positioning pin of the die and the through hole may be used, or any other configuration may be used. It may be adopted.

The flexible printed wiring board manufacturing apparatus may not have a positioning pin. If the flexible printed wiring board sheet is accurately positioned on the plate jig and the plate jig can be accurately positioned on the die, the flexible printed wiring board sheet such as the positioning pin in the above-described embodiment can be accurately positioned on the plate. The positioning configuration for positioning with respect to the jig may be omitted.

The flexible printed wiring board manufacturing apparatus may not have a height adjusting member. If the waviness of the flexible printed wiring board sheet is sufficiently small, the height adjusting member may be omitted. Therefore, the adjustment step in the method for manufacturing the flexible printed wiring board may be omitted.

1 Die 2 Punch 3 Plate-shaped jig 4 Punch hole 5 Recess 6 Height adjusting member 7 Positioning pin 8 Convex part 9 Holding pin C Connection part F Frame part G Group H Punched hole P Flexible printed wiring board piece Q Holding hole R Positioning hole S Flexible printed wiring board sheet

Claims (5)

A method for manufacturing a flexible printed wiring board, in which a plurality of flexible printed wiring board pieces are cut out from one flexible printed wiring board sheet by punching with a die and a punch.
The process of holding the flexible printed wiring board sheet with a plate jig and
The process of positioning the plate jig with respect to the die and
It is equipped with a process of punching the flexible printed wiring board sheet with the punch.
A method for manufacturing a flexible printed wiring board in which the positioning step and the punching step are repeated a plurality of times by shifting the position of the plate jig with respect to the die. The die has a recess into which the plate jig is fitted and a height adjusting member protruding into the recess.
The flexibility according to claim 1, further comprising a step of adjusting the protrusion amount of the height adjusting member so that the opening surface of the die and the surface of the plate jig are arranged on the same plane in the positioning step. Manufacturing method of printed wiring board. A flexible printed wiring board manufacturing device that cuts out a plurality of flexible printed wiring board pieces from one flexible printed wiring board sheet.
The die and the punch corresponding to this die,
A device for manufacturing a flexible printed wiring board, which can be arranged at a plurality of positions on the die and includes a plate-shaped jig for holding the flexible printed wiring board sheet. The die has a recess into which the plate jig is fitted and a height adjusting member protruding into the recess.
The flexible printed wiring board manufacturing apparatus according to claim 3, wherein the protrusion amount of the height adjusting member can be adjusted so that the opening surface of the die and the surface of the plate jig are arranged on the same plane. .. The flexible printed wiring board manufacturing apparatus according to claim 3 or 4, wherein the die has a positioning pin that fits into the flexible printed wiring board sheet.

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