JPH11254391A - Multiple-sheet member, working method thereof, and working equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct half-cut working with high dimensional precision and improve working efficiency at the time of working, in a multiple-sheet member, a working method thereof, and working equipment which are used for the panel switches of various electronic appliances or the like and require half-cut working. SOLUTION: This working equipment divides a cutting line 11B for half- cutting multiple-sheet member 13A with contact into a straight portion 16 and its jointed portion 17 and punches the jointed portion 17 and a punched portion near it in a previous process, and half-cuts the straight portion 16 by means of punching die with a bottom dead center regulating bumper where a straight half-cutting edge formed by grinding slender rectangular parallelopiped block steel material is mounted on an upper base.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-sheet member requiring half-cutting, used for a panel switch for a thin operation panel of various electronic devices, a method for processing the same, and processing equipment.

[0002]

2. Description of the Related Art First, a multi-sheet member requiring a half cut and a method of processing the same will be described by taking a movable contact member used for a panel switch as an example.

[0003] Multiple sheet members, such as movable contact members, used in panel switches are manufactured by packaging and transporting mass-produced ones, so that the multiple sheet members can be conveniently mounted on a board of equipment to be used. A method is used in which a sheet attached to a belt-shaped connecting sheet at a predetermined pitch is wound into a roll and handled, and the method will be described with reference to the drawings.

[0004] In order to make the configuration easy to understand, the drawings are enlarged in the thickness direction.

FIG. 7 (a) is an exploded perspective view of a movable contact body, and FIG. 7 (b) is an enlarged sectional view of the movable contact portion. In FIG. A plurality of through holes 1 provided in the sheet plate 1.
A dome-shaped movable contact 2 (hereinafter, referred to as a movable contact 2) made of an elastic metal thin plate is inserted into B, and an upper surface of the through hole 1B is formed by a small sheet 3 made of a flexible insulating film coated with an adhesive 3A on the lower surface. , And the movable contact 2 is formed on the upper surface of the sheet plate 1 by bonding the upper protrusion of the movable contact 2 to the upper surface of the sheet plate 1.

Then, in order to store and transport the individual movable contact members 4, as shown in an exploded perspective view of FIG. 8A and an enlarged sectional view of the movable contact portion of FIG. Is continuously attached at a predetermined pitch to a strip-shaped separator 5 having a through-hole 5A at the same position as the through-hole 1B of the sheet plate 1 and having an upper surface peeled off, and an adhesive 6A is further applied to the upper surface. A band-shaped connecting sheet 6 made of an applied insulating film and having a width slightly smaller than that of the separator 5 is attached to the lower surface of the separator 5 so as to cover the through hole 5A to form a connecting movable contact body 7, which is wound into a roll. I will

The connecting sheet 6 also serves as a protective sheet for preventing the movable contact 2 from being corroded by gas in the air or adhering dust during storage or transportation of the movable contact body 4. Also serves as.

Further, reinforcing insulating films 8 are attached to both ends of the strip-shaped separator 5 in the width direction of the connecting movable contact body 7, and holes 9 provided through the separator 5 at a constant pitch are formed in the strip-shaped. Are used to reliably and automatically supply the movable contact body 4 at a constant speed when the movable contact body 4 is mounted on a board (not shown) of a device to be used.

The strip-shaped separator 5 and the connecting sheet 6 of the connecting movable contact body 7 have a smaller material thickness than the sheet plate 1. Is easier to bend than the sheet plate 1, as shown in the cross-sectional view of FIG. When the strip-shaped separator 5 and the connecting sheet 6 are conveyed in the direction of the arrow while being pulled obliquely downward using the holes 9, the strip-shaped separator 5 and the connecting sheet 6 are separated from the surface on which the separator 5 has been subjected to the peeling treatment. Only can be easily peeled off.

Next, a description will be given of a conventional processing method of the above-mentioned connecting movable contact body 7. First, as shown in an external perspective view of FIG. 10, for a sheet plate 1 having a lower surface coated with an adhesive 11A. The lower surface of the strip-shaped insulating film 11 is bonded to the upper surface of a separator 5 made of a strip-shaped insulating film having an upper surface subjected to a peeling treatment, and a plurality of through holes 12 for each movable contact body 4 (the sheet plate 1). The through holes 1A and the through holes 5A of the separators 5) and the feed holes 9 as the strip-shaped connecting movable contact members 7 are continuously punched at a predetermined pitch, and then the adhesive 6A is applied on the upper surface. A band-shaped connecting sheet 6 made of a film and having a width slightly smaller than that of the separator 5 is attached to the center of the lower surface of the separator 5 so that both ends of the separator 5 are exposed and the through holes 12 (5A) are closed. Forming a strip-shaped multi-sheet 13.

Then, as shown in the sectional view of FIG. 11, a small sheet 3 made of a flexible insulating film having an adhesive 3A applied to the lower surface thereof is pasted on the upper projecting portion of the movable contact 2 made of an elastic metal thin plate in advance. The movable contact 2 is adhered to the movable contact 2 in such a manner that the movable contact 2 enters each through hole 12 and the small piece sheet 3 covers the upper surface of each through hole 12 so that the movable contact 2 is adhered and held. The multiplex sheet 13A with contacts is used.

Next, as shown in a cross-sectional view for explaining the conventional half-cut processing method in FIG. 13, a Thomson mold 14 is used for a three-layer strip-shaped multi-layer sheet with contacts 13A holding the movable contacts 2. The uppermost insulating film 11 and the adhesive 11A are completely cut off, but the connecting sheet 6 is not cut off. After the half-cut processing of the parallel cutting line 11C at both ends in the direction is continuously performed, the strip-shaped insulating film 11 and the unnecessary portion 11D of the adhesive 11A are pulled upward to be peeled off.
As shown in the external perspective view of FIG. 4, portions of each individual movable contact body 4 and the reinforcing insulating film 8 remain on the separator 5 and the connection sheet 6 to form the connection movable contact body 7. Was.

[0013]

However, in the above-mentioned conventional method for processing a movable connection contact, the insulating film 11 and the adhesive 1 on the uppermost part of the contact-attached multi-layer sheet 13A are used.
Thomson type 14 for half-cutting 1A
In the method, the Thomson mold 14 protruding from the upper base 15A of the upper and lower bases 15A and 15B disposed opposite to each other is pressed within a predetermined range by a pressing device (not shown). The sheet member placed on the lower base 15B is moved up and down to cut the sheet member. In the Thomson mold, a thin steel plate whose edge is finished with a knife edge is punched out and bent to form a pattern. Since it is formed by being embedded in the support plate 14B made of a plastic plate or a metal plate, the external dimension accuracy of the cut portion is low,
It is not suitable for processing complicated shapes or small high-precision parts.
When half-cutting A, the insulating film 11 and the adhesive 11A are completely cut, but the cutting depth is set to the separator 5 so that the lowermost connecting sheet 6 is not cut.
Since a depth of cut of about 0.03 mm is required in order to stop within the thickness of the material, even if a press with a bumper is used, high-frequency maintenance for the wear of the Thomson blade 14A is required. there were.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and enables a multi-sheet member to be half-cut with high external dimensional accuracy and cutting depth accuracy, and at the same time to reduce the maintenance frequency for wear of the cutting blade. It is an object of the present invention to provide a processing method and processing equipment which are low in processing efficiency and have high working efficiency at the time of processing, and a multi-sheet member processed using the processing method and equipment.

[0015]

According to the present invention, there is provided a method of processing a multi-sheet member according to the present invention, in which a half-cut portion of the multi-sheet member is divided into a straight line portion and a joint portion thereof and joined in a pre-process. After punching the part and its vicinity, in the subsequent process, a punching die with a bumper for bottom dead center regulation with a straight half-cutting cutting blade formed by grinding an elongated rectangular parallelepiped block steel material formed on the upper base The half-cut processing is performed on the linear part by the mold.

Thus, the multi-sheet member can be half-cut with high external dimensional accuracy and high cutting depth accuracy, and the frequency of maintenance for cutting blade wear is low, and the working efficiency and the working efficiency at the time of processing are high. It is possible to obtain equipment and a multi-sheet member having high dimensional accuracy processed using the equipment.

[0017]

DETAILED DESCRIPTION OF THE INVENTION According to the first aspect of the present invention, a processing portion is divided into a straight portion and a joint portion thereof, and after the joint portion and its vicinity are punched in a previous process, the straight portion is formed in a subsequent process. This is a method of processing multiple sheet members to be half-cut, which enables multiple sheet members to be half-cut with high external dimension accuracy and cutting depth accuracy, and requires less maintenance for cutting blade wear. This has the effect of realizing a method of processing a multi-sheet member with high working efficiency at the time.

According to a second aspect of the present invention, there is provided a mold having a punch and a die for punching for a pre-process, and a straight line formed by grinding an elongated rectangular parallelepiped block steel for a post-process. Is a multi-sheet member processing equipment consisting of a die with a bumper for bottom dead center control, with a half-cut cutting blade mounted on the upper base, and a straight cutting blade for the half-cut grinding block steel. It is easy to process with high precision because of the shape, and the half-cutting die has a bumper for regulating the bottom dead center. It is possible to provide processing equipment that can perform half-cut processing with depth accuracy, and has low maintenance frequency for abrasion of the cutting blade for half-cut, and has high work efficiency at the time of processing. It has the effect of.

According to a third aspect of the present invention, in the invention according to the second aspect, a punch for punching is provided on an upper base on which a cutting blade for half-cut is mounted, the projection protruding from the cutting blade at a position away from the cutting blade. The lower base is provided with a punching die hole corresponding to the punching punch, and the punching process is performed simultaneously with the half-cut processing of the multiple sheet member. Since other punched holes can be formed simultaneously with the half cut processing, there is an effect that a punched hole with a small dimensional error between the half cut processing and the outer shape can be obtained.

According to a fourth aspect of the present invention, there is provided a multi-sheet member comprising a sheet plate made of an insulating film having a lower surface coated with an adhesive and a separator made of an insulating film having a lower surface bonded to a release-treated surface. After processing using the processing method according to claim 1, a predetermined portion of the sheet plate and the pressure-sensitive adhesive layer bordering the half-cut line is peeled to form a multiple sheet member, and the accurate This has an effect that a multiple sheet member in which only necessary portions of the sheet plate are bonded at positions can be obtained.

Hereinafter, a multi-sheet member according to an embodiment of the present invention and a movable contact member having a complicated external shape used for a panel switch similar to that described in the section of the prior art will be described. The processing method and processing equipment will be described with reference to the drawings.

The same components as those described in the section of the prior art are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the method of processing a multiple sheet member according to the present embodiment, as described with reference to FIG. 10 in the section of the prior art, a strip-shaped insulating film for a sheet plate 1 having an adhesive 11A applied to the lower surface. The upper surface of a separator 5 made of a strip-shaped insulating film whose upper surface has been subjected to a peeling treatment is adhered to the lower surface of 11, a plurality of through holes 12 for each movable contact body 4 and a feed hole as a strip-shaped sheet member. 9 is continuously punched at a predetermined pitch, and a band-shaped connecting sheet 6 made of an insulating film coated with an adhesive 6A on the upper surface and having a width slightly smaller than that of the separator 5 is placed at the center of the lower surface of the separator 5, 5 are adhered so as to expose both ends and close the through-holes 12 to form a three-layer strip-shaped multi-layer sheet 13.

Then, as shown in the sectional view of FIG.
In advance, the upper surface projection of the movable contact 2 made of an elastic metal thin plate
A small sheet 3 made of a flexible insulating film having an adhesive 3A applied thereto is adhered to the lower surface. The movable contact 2 enters each through-hole 12, and the small sheet 3 is placed on the upper surface of each through-hole 12. The movable sheet 2 is adhered and held so as to cover the movable contact 2 so as to form the contact-attached multi-layered sheet 13A of FIG. 12, as in the case of the conventional technique.

However, with respect to the uppermost insulating film 11 and the adhesive 11A of the three-layer strip-shaped multi-layer sheet with contacts 13A holding the movable contacts 2, the outer shape of the sheet plate 1 of each individual movable contact body 4 is provided. Is completely different from the method of performing the half-cut processing of the cutting line 11B to be formed and the parallel cutting line 11C at both ends in the width direction of the band, and the method will be described below.

First, a three-layer strip-shaped multiplex sheet 13 with contacts is used.
In FIG. 1 which is a top view of FIG. 1A, the half-cut processing of the cutting line 11B which is the outer shape of the individual movable contact body 4 is performed by connecting the cutting line 11B to the straight portion 16 and the joining portion 17 which is circled in FIG. Process separately.

Here, the joint portion 17 is formed by not only the general corner portions 17A and 17B of the outline of the movable contact body 4 but also the protruding portion 17C and the depressed portion 17D in the middle of the linear portion 16. Part 17E, 1 combining these
7F.

First, as a pre-process of the half-cutting process, the above-mentioned joint portion 17 (17A to 17F) is formed by a mold having a punch and a die for a general punching process.
And its vicinity, a punched portion 18 (18) indicated by oblique lines in FIG.
A to 18F) are punched in blocks from the insulating film 11 on the upper surface of the multi-sheet with contacts 13A to the connecting sheet 6 on the lower surface to form a multi-sheet with holes 13B.

The block-shaped punched portion 18A
Needless to say, the portions 18A to 18F are unnecessary portions as the movable contact body, but the punched portions 18A
By making the 18F into a large block shape, it becomes advantageous in terms of workability and strength at the time of manufacturing punches and dies for punching, and high precision and stable punching can be performed.

Next, as a subsequent step, the straight line portion 16 of the cutting line 11B is half-cut, and a cross-sectional view of the die is shown in FIG.

As shown in the figure, this mold is used to press a straight half-cutting blade 21 mounted on an upper base 19A of a die set via a punch plate 20 by a pressing device (not shown). It is moved up and down in a predetermined range together with the upper base 19A, and is a sheet member (a multi-perforated sheet 13 with holes in the case of the present embodiment) which is a workpiece to be mounted on the lower base 19B.
B) is a half-cut process, 22 is a guide post for guiding the upper base 19A during vertical movement, and 23 is a cutting depth of the half-cutting cutting blade 21 for the sheet member (multi-sheet 13B with holes). A bumper 24 for stopping at a predetermined position is a stripper for separating the half-cutting blade 21 after the half-cut processing from the sheet member (multi-sheet with holes 13B).

The linear portion 16 of the cutting line 11B, which is the outer shape of the movable contact body 4, is formed on the above-described multi-sheet with holes 13B by the mold having the above-described configuration.
1 and the adhesive 11A, the entire cutting line 11B, which is the outer shape of the movable contact body 4 shown in the top view of FIG. 2, is connected to the punched portions 18A to 18F by the half-cut straight portion 16. Will be.

The punching process as a pre-process and the half-cut process as a post-process as described above are sequentially and continuously performed for each individual movable contact body 4 of the belt-shaped multi-sheet with contacts 13A. .

As for the half-cut processing of the cutting line 11C provided in parallel at both ends in the width direction of the strip-shaped multi-sheet with contacts 13A, the processing of the cutting line 11B serving as the outer shape of the movable contact body 4 is performed. When performing the steps sequentially, the half-cut portions 25 for each movable contact body 4 shown in FIG.

That is, the cutting line 1 of the outer shape of the movable contact body 4
The punching hole 26 is formed at the time of punching the joint portion 17 of 1B.
By processing the linear half-cut portion 25 at the time of half-cutting the linear portion 16, the continuous cutting line 11 is formed.
C can be provided.

In the above description, the half-cut processing of the multi-sheet member (multi-sheet with holes 13A) is performed as follows.
It has been described that punching of the joint portion 17 as a pre-process and half-cutting of the linear portion 16 as a post-process are sequentially performed by separate dies. Of course, by arranging in a mold, two processes can be performed continuously.

As shown in the external perspective view of FIG. 4, the band-shaped insulating film 11 and the adhesive 1 are applied to the band-shaped half-cut multiple sheet 13C obtained by the above processing.
By pulling the unnecessary portion 11E of 1A upward and peeling off, the individual movable contact body 4 and the portion of the reinforcing insulating film 8 remain on the separator 5B and the connection sheet 6B, and the connection movable contact body 7A is formed. This is the same as in the prior art.

As described above, according to the multiple sheet member according to the present embodiment, the processing method and the processing equipment thereof, the half cut portion of the multiple sheet member is divided into a straight line portion and a joint portion thereof, Since the vicinity is punched, and only the straight part is half-cut in the post-process, the cutting blade for half-cut only needs to have only a straight blade, and it is used to grind an elongated rectangular parallelepiped block steel material. It can be formed with high precision, can be processed with high precision, can achieve a cutting accuracy of about 0.01 mm, and because of its block shape, it is firm and stable in mounting, and it has dimensions due to wear during use Since there is little fluctuation, the frequency of maintenance is low and the working efficiency at the time of machining is good.

In the above description, a case has been described in which only a linear half-cut process is performed on the multi-sheet with holes 13B, which is a multi-sheet member, in the post-process. By using a mold as shown in the cross-sectional view of FIG. 5, a hole cutting process can be performed simultaneously with a half-cutting process.

That is, in addition to the half-cutting blade 21 similar to the die shown in FIG. 3, the upper substrate 27 of the die set of the die shown in FIG. Punching punch 28 protruding from cutting blade 21
Are mounted via a punch plate 29, and a punching die hole 31 corresponding to the punching punch 28 is provided in the lower base 30.

Therefore, the multi-sheet with holes 13B described above
On the other hand, using this mold, the straight portion 16 of the cutting line 11B, which is the outer shape of the movable contact body 4, is half-cut to the uppermost insulating film 11 and the adhesive 11A. As shown, a hole 32 penetrating from the insulating film 11 on the upper surface to the connecting sheet 6 on the lower surface can be punched.

Since this hole 32 is punched out by a punching punch 28 mounted on the same punch plate 29 as the cutting blade 21 for half-cutting, the hole 32 is formed with the straight line portion of the cutting line 11B of the outer shape by half-cutting. The dimensional error between them can be reduced.

[0043]

As described above, according to the present invention, the cutting blade for half-cut processing can be formed by grinding a block steel material, so that a multi-sheet member can be formed with high external dimension accuracy and cutting depth accuracy. It is possible to obtain a processing method and processing equipment that can perform half-cut processing, have low maintenance frequency with respect to abrasion of a cutting blade, and have high work efficiency at the time of processing, and a multi-sheet member with high dimensional accuracy processed using the processing method and equipment. The advantageous effect that it can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a top view showing a cutting line serving as an outer shape of a movable contact body in a multi-sheet with contacts according to an embodiment of the present invention.

FIG. 2 is a top view showing a punched and half-cut portion serving as an outer shape of a movable contact body in the multiple sheet with the same contacts;

FIG. 3 is a sectional view of the mold for half-cut processing.

FIG. 4 is a perspective view illustrating a method of processing a movable contact body from the half-cut multi-sheet.

FIG. 5 is a cross-sectional view showing another example of the mold for half-cut processing.

FIG. 6 is a top view showing a portion for punching and half-cutting the multi-sheet with the holes.

7A is an exploded perspective view of a movable contact body. FIG. 7B is an enlarged sectional view of the movable contact part.

FIG. 8A is an exploded perspective view of a connection movable contact body. FIG. 8B is an enlarged sectional view of the movable contact part.

FIG. 9 is a cross-sectional view illustrating a state when the movable contact body is mounted.

FIG. 10 is a perspective view of a multiple sheet.

FIG. 11 is a cross-sectional view illustrating a state in which a movable contact is adhered and held on a multiple sheet.

FIG. 12 is a perspective view of a multiple sheet with contacts.

FIG. 13 is a cross-sectional view illustrating a conventional method of half-cutting a multi-sheet with contacts.

FIG. 14 is a perspective view illustrating a conventional method for processing a movable contact body from a half-cut multi-sheet.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sheet plate 2 Movable contact 3 Small piece sheet 3A, 6A, 11A Adhesive 4 Movable contact body 5, 5B Separator 6, 6B Connection sheet 7A Connection movable contact body 8 Reinforcement insulating film 9 Feeding hole 11 Insulating film 11B, 11C Cutting line 11E Unnecessary part 12 Through hole 13 Multiple sheet 13A Multiple sheet with contact 13B Multiple sheet with hole 16 Linear part 17 Joint part 17A, 17B Corner part 17C Projected part 17D Depressed part 17E, 17F Combined part 18A, 18B, 18C, 18D, 18E, 18F Punched portion 19A, 27 Upper base 19B, 30 Lower base 20, 29 Punch plate 21 Cutting blade for half cut 22 Guide post 23 Bumper 24 Stripper 25 Half cut part 26 Punch hole 28 Punch for punch 31 Punch for Lee holes 32 holes

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Akira Ue 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A method for processing a multi-sheet member in which a processed portion is divided into a straight portion and a joined portion thereof, and the joined portion and the vicinity thereof are punched in a previous process, and then the straight portion is half-cut in a subsequent process. 2. A die having a punch and a die for punching as a pre-process, and a straight half-cut for forming a post-process, formed by grinding an elongated rectangular parallelepiped block steel material. A multi-sheet member processing facility consisting of a die with a bumper for regulating the bottom dead center, with the blade mounted on the upper base. 3. An upper base on which a cutting blade for half cutting is mounted, a punch for punching protruding from the cutting blade at a position distant from the cutting blade, and a punch corresponding to the punch for punching on a lower base. 3. The processing equipment for a multiple sheet member according to claim 2, wherein a die hole is provided so as to simultaneously perform a half-cutting process and a punching process on the multiple sheet member. 4. The multi-sheet member according to claim 1, comprising a sheet plate made of an insulating film having a lower surface coated with an adhesive and a separator made of an insulating film having a lower surface bonded to a surface subjected to a release treatment. After processing using the processing method,
A multiple sheet member in which a predetermined portion of the sheet plate and the pressure-sensitive adhesive layer bordering on a half-cut line is peeled off.