JPH09201899A - Manufacture of laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacture of a laminate capable of being separated without detriment to each laminate, moreover, promptly conducting the separation work of each laminate, and readily facilitating the automatization of separation. SOLUTION: A lamination combined material 4 is formed by superimposing bands 3 formed into a continuation with metal foil 2 on a sheet-lile synthetic resin 1, and a plurality of the lamination combined materials 4 are formed in the longitudinal direction of the bands 3, and then a lamination block 6 is formed by bending the bands 3 between the adjacent lamination combined materials 4 so as to stack a plurality of the lamination combined materials 4 via an insulation middle plate 5. By compression molding the lamination block 6 while electrifying the bands 3, a laminate is manufactured. At the laminate manufacturing process mentioned above, movable cutting means 8 is previously set at the bent parts 3a of the bands 3, thereby cutting the bent parts 3a of the bands 3 by means of the cutting means 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a laminated body, and more particularly to a method for manufacturing a laminated body in which a metal foil to be laminated is heated by being energized to perform thermocompression molding.

[0002]

2. Description of the Related Art A laminate having a metal foil on its surface is obtained by integrally molding a metal foil and a sheet-shaped synthetic resin material. A laminated body produced by using copper foil or the like as the metal foil and using prepreg or the like as the sheet-like synthetic resin can be processed into a printed circuit board and used.

Such a laminated body is formed by laminating a metal foil and a prepreg, or an inner layer material, or further adding an outer layer material to form a laminated combination material, and molding the laminated combination material by heating and pressing. Is manufactured by melting the synthetic resin that constitutes the prepreg and heat-curing or cooling-curing the resin. In this way, heating and pressurization at the time of molding the laminated combination material have generally been conventionally performed by a hot press using a heat source such as steam or electric heat, or a vacuum press.

The hot press is to heat and press a laminated combination material composed of a metal foil and a prepreg with a heating plate from above and below. Further, the vacuum press hermetically covers the laminated combination material composed of metal foil and prepreg with a packing material, evacuates the inside of the packing material, and introduces high-temperature and high-pressure gas around the packing material to heat and apply heat. It is something that is pressed. When molding is performed by such a hot press or a vacuum press, a plurality of laminated combination materials are used, and each laminated combination material is stacked in multiple stages with an intermediate plate sandwiched therebetween to form a laminated block, and this laminated block is heated and pressed. This makes it possible to obtain a plurality of laminated bodies at the same time. The intermediate plate is used to ensure the flatness of the surface of each laminate, and a stainless plate or the like is usually used.

By the way, when a laminated block in which the laminated combination materials are stacked in multiple stages as described above is heated and pressed by a hot press, the laminated block is heated from above and below by the heating plate, so that delay in heat transfer and Due to heat radiation from the side of the laminated block, the heating temperature differs between the upper and lower laminated combination materials near the heating plate in the laminated block and the middle laminated combination material far from the heating plate. Due to the uniformity, the quality of the obtained laminate may vary. Therefore, the number of laminated combination materials that can be stacked by the hot press is limited.

On the other hand, in the vacuum press, since the heat is applied from the periphery of the laminated block, the heating temperature of each laminated combination material of the laminated block rises almost uniformly. Between the inside,
After all, a delay in heat transfer causes a temperature difference.
Therefore, it is difficult to form a large-area laminate.

As a method for solving these problems, there is a method in which a power supply is connected to the metal foil and the metal foil is heated by heating the metal foil by supplying electricity to the metal foil. For example, as shown in FIG. 11, the metal foil 2 is formed as a long band 3, and the prepreg 1 a is formed between the two bands 3.
The sheet-like synthetic resin material 1 such as the inner layer material 1b and the inner layer material 1b are stacked to form a set of laminated combined material 4 and the band 3 is bent to form a plurality of laminated combined materials 4 in the longitudinal direction thereof, and an insulating intermediate plate By stacking a plurality of laminated combination materials 4 in multiple stages via
To form Then, the laminated block 6 is set between the pressure plates, the power source of the electric heating device is connected to both ends of the band 3, and the band formed by the metal foil 2 while cold pressing the laminated block 6 with the pressure plate. When electricity is applied to the band 3, the band 3 generates heat due to Joule heat, and this heat generation heats each laminated combination material 4 to perform molding.

Therefore, according to this method, since each laminated combination material 4 can be heated directly and over the entire surface, each laminated combination material 4 is uniformly heated in the stacking direction and the plane direction. Therefore, a large number of laminated bodies can be simultaneously molded without variation in quality. In this structure, the laminated body 7 formed by heating and pressurizing the laminated block 6 is integrally and continuously formed by the band 3. Therefore, it is necessary to separate the laminated bodies 7 after the molding. So, in the past,
As shown in FIG. 1, after the upper laminated body 7 is opened upward, a cutter 23 such as a cutter knife is inserted between the upper and lower laminated bodies 7, 7 to cut the bent portion 3a of the band 3, After separating the upper laminated body 7 and then removing the intermediate plate 5, the operation of cutting the band 3 with the blade 23 is repeated in the same manner as described above to separate the respective laminated bodies 7 in order.

[0009]

However, since the band 3 is cut by the blade 23 after each laminate 7 is opened upward, there is a risk that the blade 23 may damage the laminate 7. Since each laminated body 7 is cut while opening it one by one, there is a problem that the cutting and separating work takes time, the workability is poor, and it is difficult to automate the separation.

The present invention has been made in view of the above points, and it is possible to separate each laminated body without damaging each other, and moreover, the separating operation of each laminated body can be performed quickly and the separation can be automated. It is an object of the present invention to provide a method for manufacturing a laminated body, which is easy.

[0011]

A method for manufacturing a laminated body according to claim 1 of the present invention comprises a sheet-shaped synthetic resin material 1 and a metal foil 2.
1. Forming a laminated combined material 4 by stacking the bands 3 formed in a long shape, forming a plurality of laminated combined materials 4 in the longitudinal direction of the band 3, and bending the band 3 between adjacent laminated combined materials 4. Insulating intermediate plate 5
In order to manufacture a laminated body by forming a laminated block 6 by stacking a plurality of laminated combined materials 4 in multiple stages via the above and pressing the laminated block 6 while energizing the band 3, the steps of the above-mentioned laminating step The movable cutting means 8 is provided in advance at the bent portion 3a of the band 3,
The bending portion 3a of the band 3 is cut by the cutting means 8.

According to a second aspect of the present invention, there is provided a method for manufacturing a laminated body in which the band 3 is formed in a state where the laminated plates 7 are laminated after the forming step.
The bent portion 3a is cut. In the method for manufacturing a laminated body according to claim 3 of the present invention, the movable cutting means 8 is provided in advance at the bent portion 3a of the band 3 at the stage of the laminating step, and the laminated plate 7 is provided after the molding step.
The bent portion 3a of the band 3 is cut by the cutting means 8 in the state of being laminated.

The invention of claim 4 is characterized in that, in the above-mentioned claims 1 to 3, the cutting means 8 is formed independently of the intermediate plate 5. The invention of claim 5 is characterized in that, in the above-mentioned claims 1 to 3, the cutting means 8 is formed at an end of the intermediate plate 5. The invention of claim 6 is the cutting means 8 according to claim 4,
Is formed by the wire 9, and the bent portion 3a of the band 3 is cut by moving the wire 9 while tensioning the wire 9.

The invention of claim 7 is characterized in that, in the above-mentioned claim 6, the bent portion 3a of the band 3 is cut while winding the wire 9. The invention of claim 8 is characterized in that, in the above-mentioned claim 4, the cutting means 8 is formed of a blade-shaped plate piece 10. According to the invention of claim 9, in the above-mentioned claim 5, the intermediate plate 5 is slid to move the bent portion 3a of the band 3.
It is characterized by cutting.

According to a tenth aspect of the invention, in the above-mentioned claim, the intermediate plate 5 is formed in a double structure, and the bending portion 3a of the band 3 is cut by the cutter 11 protruding from the inside of the intermediate plate 5. It is characterized by having done. Further, the invention of claim 11 is characterized in that, in each of the above-mentioned claim 5, energization to the band 3 is turned off at the same time when the band 3 is cut.

The invention of claim 12 is characterized in that, in each of the above claims, a fold line 12 is formed in the bent portion 3a of the band 3. According to the invention of claim 13, in each of the above claims, the cutting means 8 is a cooling means 13.
It is also characterized in that it doubles as. Claim 14
In each of the above-mentioned claims, the invention is characterized in that the band 3 is cut while applying ultrasonic vibration to the cutting means 8.

[0017]

Embodiments of the present invention will be described below. FIG. 10 shows an example of a laminated body manufacturing apparatus in which molding is performed by energizing the metal foil 2 to generate heat, and a combination of a molding press apparatus using the pressure plate 21 and an electric heating apparatus. Has been formed. The metal foil 2 is used as the elongated band 3, and the laminated block 6 is formed by using the two bands 3b and 3c. That is, of the two bands 3b and 3c, the sheet-shaped synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b is superposed on one band 3b, and the other band 3c is placed on the sheet-shaped synthetic resin material 1. To form a set of laminated combination material 4 composed of the bands 3b and 3c and the sheet-shaped synthetic resin material 1. Then, the intermediate plate 5 is stacked on the band 3c and the band 3c is folded back to form the intermediate plate 5. By stacking the sheet-shaped synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b on the band 3c and the other band 3b on the sheet-shaped synthetic resin material 1. Another set of laminated combination material 4 composed of 3c and the sheet-shaped synthetic resin material 1 is formed. Similarly, a plurality of sets of the laminated combined material 4 are formed in the longitudinal direction of the bands 3b and 3c, and the laminated combined material 4 is overlapped with the intermediate plate 5 interposed therebetween. Alternately stacked in multiple stages to form a laminated block 6
Can be formed. The intermediate plate 5 has electrical insulation and has a smooth surface. Note that FIG.
In the above example, two bands 3 are used, but the same laminated block 6 can be formed with one band 3.

Then, the laminated block 6 is set between the pressure plates 21 of the molding press device, the power source 22 of the electric heating device is connected to both ends of the band 3, and the laminated plate 6 is pressed by the pressure plates 21. While turning on the switch of the power source 22 to energize the band 3 formed of the metal foil 2 to generate heat, each laminated combination material 4
Can be molded by heating and pressurizing, and a laminated body 7 in which a sheet-shaped synthetic resin material 1 such as a prepreg 1a or an inner layer material 1b and a band 3 made of a metal foil 2 are laminated and integrated is obtained. Is something that can be done. In the example of FIG. 10, six laminated bodies 7 can be manufactured at the same time,
By increasing the number of stacked laminated combination materials 4, a larger number of laminated bodies 7 can be manufactured at the same time. Further, as shown by an imaginary line in FIG. 10, it is also possible to form the forming press device as a vacuum laminating press device in which it is surrounded by a vacuum chamber 24.

Next, the production of the above-mentioned laminated body 7 will be described by specifically showing the material names and molding conditions. As the sheet-shaped synthetic resin material 1, a prepreg 1a made of an epoxy resin-impregnated glass cloth and an inner layer material 1b made by forming inner layer circuits on both surfaces of a glass cloth base epoxy resin inner layer board are used. Prepreg 1 on both sides of the inner layer material 1b
a was arranged to form a set. As the metal foil 2 forming the band 3, a copper foil having a thickness of 18 μm was used. Further, as the intermediate plate 5, an aluminum plate having a surface hard anodized and impregnated with ethylene tetrafluoride to form an electric insulating coating having a thickness of 30 to 60 μm on the entire surface was used.

Then, as shown in FIG. 10, a laminated block 6 is formed by stacking a plurality of laminated combination materials 4 on top of each other by folding the band 3 in a meandering manner so that the bent portions 3a are alternately located on the opposite side. Block 6 was set in a vacuum laminating press. In this state, after evacuating the vacuum chamber 24 to a pressure of 10 Torr,
The pressure plate 21 applies pressure from above and below at a pressure of 10 kgf / cm ² , and at the same time, the power supply 22 of the electric heating device is turned on to apply a direct current to the band 3 to electrically connect the band 3 formed of the metal foil 2 to electricity. It was heated by generating heat as a resistor. At this time, the temperature of the laminated combined material 4 at the time of heating is measured by using a thermocouple, and the current value of energization is feedback-controlled so that the heating temperature becomes 180 ° C.
Molding was performed by heating and pressurizing for 100 minutes.

By performing the molding as described above,
It is possible to simultaneously manufacture a plurality of laminated bodies 7 in which the sheet-like synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b and the band 3 made of the metal foil 2 are laminated and integrated. It is in a continuous state by one. Therefore, after molding, the laminated block 6 is taken out, the band 3 is cut, and the respective laminated bodies 7 are separated. When cutting the band 3 to separate each laminate 7, the cutting means 8 independent of the intermediate plate 5 as in the invention of claim 4 and the intermediate plate 5 as in the invention of claim 5 are used. There is a case where the cutting means 8 is provided at the end of the intermediate plate 5, and first, the case where the cutting means 8 independent of the intermediate plate 5 is used will be described.

In the example of FIG. 1, a wire 9 is used as the cutting means 8.
Is used (the invention of claim 6), the wire 9 is inserted inside the bent portion 3a of the band 3, and one end of the wire 9 is fixed to tighten the wire 9. While pulling and moving the other end to the outside of the band 3 as shown by the arrow in FIG. 1, the bent portion 3a is cut by the wire 9 and the band 3 is cut off to separate the laminates 7. ing. Wire 9
The bent portions 3a may be cut one by one by pulling one by one, or the plural bent portions 3a may be cut simultaneously by pulling a plurality of pieces. As the wire 9, a band-shaped one can be used in addition to the thread-shaped one, and the material of the wire 9 is a metal such as iron, stainless steel, copper or the like, a natural material thread such as a hairy thread, or an aramid fiber. Heat-resistant synthetic fiber threads such as 1
There is no particular limitation as long as it can withstand a molding temperature of about 80 ° C.

Here, the wire 9 constituting the cutting means 8
Is inserted in advance inside the bent portion 3a at the stage of the laminating step of laminating the laminated combination material 4 to form the laminated block 6, and the band can be formed by simply pulling out the wire 9 after taking out the laminated block 6 that has been formed. 3 can be cut to separate the laminate 7. In this way, the invention of claim 1 can be realized, and after the molding is completed as in the conventional example of FIG. 11, the cutting tool 23 is put in the bent portion 3a of the band 3 of the laminated block 6 and cut. There is no risk of damaging the laminated body 7 as in the case of performing.

The band 3 can be cut by the wire 9 constituting the cutting means 8 by pulling the wire 9 in a stacked state after the laminated body 7 is molded as shown in FIG. In this way, the invention of claim 2 can be realized, which eliminates the trouble of opening and disconnecting the upper laminated bodies 7 one by one as in the conventional example of FIG. The separation work can be performed quickly and the cutting / separation can be easily automated.

Further, the wire 9 constituting the cutting means 8
Is inserted in advance inside the bent portion 3a of the band 3 in the stage of the laminating process, and after the molding is completed, the laminated body 7 is molded and stacked, and the wire 9 is pulled to bend the bent portion 3a of the band 3. The invention according to claim 3 can be realized by cutting off.

FIG. 2 shows an example in which one end of the wire 9 is fixed to the intermediate plate 5. In this example, one end of the wire 9 is fixed to the intermediate plate 5, so the other end of the wire 9 is pulled. The bent portion 3a of the band 3 can be cut only by itself. FIG. 3 shows an embodiment of claim 12 in which a fold line 12 is formed on the bent portion 3a of the band 3 in the laminating step of forming the laminated block 6. With this structure, it becomes easy to position the wire 9 forming the cutting means 8 in the bent portion 3a of the band 3 along the fold line 12, and the band 3 can be cut accurately along the fold line 12.

FIG. 4 shows an embodiment of the invention of claim 7, wherein the laminated block 6 is provided with a plurality of bent portions 3a of the band 3 on both sides thereof, respectively.
The wire 9 wound around the reel 25 is passed in a meandering manner in order from the bottom inside the bent portion 3a on each side of the laminated block 6. That is, the two bands 3b and 3c
Prepreg 1a on the end of one of the bands 3b
By stacking the sheet-shaped synthetic resin material 1 such as the inner layer material 1b and the other band 3c on the sheet-shaped synthetic resin material 1, a set of the bands 3b and 3c and the sheet-shaped synthetic resin material 1 is formed. Forming a laminated combination material 4,
Next, the intermediate plate 5 is placed on the band 3c, the wire 9 is placed on the portion to be the bent portion 3a, the band 3c is folded back and placed on the upper surface of the intermediate plate 5, and the prepreg 1a and the inner layer material are placed on the band 3c. By stacking the sheet-shaped synthetic resin material 1 such as 1b and the other band 3b on the sheet-shaped synthetic resin material 1, the bands 3b, 3
Another set of laminated combination material 4 including c and the sheet-shaped synthetic resin material 1 is formed. Similarly, while stacking a plurality of sets of the laminated combined material 4 via the intermediate plate 5, the wire 9 is inserted in a meandering shape inside the bent portion 3a of the band 3 to form the laminated block 6. The wire 9 may be a thread of aramid fiber or the like, but may be a band of wire.
Needless to say, the wire 9 may be made to pass through the inside of each bent portion 3a in a meandering order from the top.

In this structure, after the molding is completed, the laminated block 6 is taken out, one end 9a of the wire 9 is fixed, and the reel 25 is turned to rotate the wire 9
By winding the wire around the reel 25, the wire 9 is tensioned and pulled outward of the band 3 to bend the bent portion 3
a can be cut, and the bent portions 3a are formed at a plurality of upper and lower portions on each side of the laminated block 6.
Can be cut in order from the top. In this manner, the band 3 can be cut with the wire 9 to separate each laminated body 7 while the laminated body 7 after molding is stacked, and the separating work can be performed quickly and the cutting / separating operation can be performed. It is easy to automate. In addition, when the wire 9 is made to pass through the inside of each bent portion 3a in a meandering order from the top, the bent portion 3a is sequentially cut from the top.

Further, in this way, the wire 9 is reeled into the reel 25.
When the band 3 is cut while being wound on the band, if the band 3 is cut at the time when the heating / pressurizing time is finished in the molding process, the electric current from the power source 22 can be turned off at this cutting point. It is possible to stop the heat generation of the band 3 by stopping the power supply to the band 3 at the same time as cutting the band 3 (the invention of claim 11).

FIG. 5 shows an embodiment of the invention of claim 8 in which a blade-like plate piece 10 is inserted as a cutting means 8 inside each bent portion 3a of the band 3 of the laminated block 6. . That is, of the two bands 3b and 3c,
By stacking the sheet-shaped synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b on the end portion of the one band 3b and the other band 3c on the sheet-shaped synthetic resin material 1, the bands 3b and 3c are formed. And sheet synthetic resin material 1
Forming a set of laminated combination materials 4 and then stacking the intermediate plate 5 on the band 3c and bending the bent portion 3a.
The blade-shaped plate piece 10 is placed on the portion to be formed, the band 3c is folded back and overlapped on the upper surface of the intermediate plate 5, and the sheet-shaped synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b is placed on the band 3c.
And the other band 3b on the sheet-shaped synthetic resin material 1 to form another set of laminated combination material 4 including the bands 3b and 3c and the sheet-shaped synthetic resin material 1. Similarly, a plurality of laminated combination materials 4 are piled up with the intermediate plate 5 interposed therebetween, and the band 3
The laminated block 6 can be formed by inserting the blade-shaped plate piece 10 inside the bent portion 3a. Cutlery plate piece 10
Can be made of any material such as a stainless steel plate.

In this case, after the molding is completed, the laminated block 6 is taken out and each blade-shaped plate piece 10 is taken out.
The bent portion 3a can be cut by moving the outside of the band 3. In this manner, the stacked bodies 7 after molding can be separated from each other by cutting the band 3 with the blade-shaped plate piece 10 in the stacked state, and the separation work can be performed quickly. At the same time, the automation of cutting and separation becomes easy.

FIG. 6 shows an embodiment of claim 13 in which a cooling pipe 26 is used as the cutting means 8. The cooling pipe 26 has a flat elliptical cross section as shown in FIG. 6 (b) so that both ends have a blade shape. By passing a cooling medium such as cooling air through the cooling pipe 26, It is designed so that it can be cooled. Therefore, the cooling pipe 26 serves both as the cutting means 8 and the cooling means 13. This cooling pipe 26 is provided at each bent portion 3 of the band 3 of the laminated block 6.
It is inserted inside a. That is, two bands 3
Among the b and 3c, the sheet-like synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b is overlaid on the end of one band 3b, and the other band 3c is overlaid on the sheet-like synthetic resin material 1. To form a set of laminated combination material 4 composed of the bands 3b and 3c and the sheet-shaped synthetic resin material 1, and then the intermediate plate 5 is laid on the band 3c, and the cooling pipe 26 is formed on the portion to be the bent portion 3a. , The band 3c is folded back and stacked on the upper surface of the intermediate plate 5, the sheet-like synthetic resin material 1 such as the prepreg 1a and the inner layer material 1b is stacked on the band 3c, and the other band 3b is formed on the sheet-like synthetic resin material. By stacking on 1,
Another set of laminated combination material 4 including the bands 3b and 3c and the sheet-shaped synthetic resin material 1 is formed. In the same manner, the laminated block 6 can be formed by inserting the cooling pipe 26 inside the bent portion 3a of the band 3 while stacking a plurality of laminated combined materials 4 via the intermediate plate 5.

In this structure, after the molding is completed by heating and pressurizing, while the laminated block 6 is being pressurized by the pressure plate 21, the refrigerant is passed through each cooling pipe 26 to form each laminated laminate. Cool body 7, prepreg 1
The temperature of each laminate 7 is lowered below the glass transition temperature of the resin a. When the laminated body 7 is naturally cooled after being heated and pressed, it takes a long time to be cooled and the lead time becomes long. However, the refrigerant is passed through the cooling pipe 26 to forcibly cool the laminated body 7. By doing so, the lead time can be shortened. Next, by taking out the laminated block 6 and moving each cooling pipe 26 to the outside of the band 3, the bent portion 3a can be cut. In this manner, the band 3 can be cut by the cooling pipe 26 to separate the respective laminated bodies 7 in a state where the laminated bodies 7 after molding are stacked, so that the separation work can be performed quickly and the cutting / cutting operation can be performed. This facilitates automation of separation.

Next, the cutting means 8 provided at the end of the intermediate plate 5
The one in which the band 3 is cut will be described. FIG. 7 shows an embodiment of the invention of claim 9 in which the bent portion 3a of the band 3 of the side edge of the intermediate plate 5 is formed.
The blade portion 5a is formed on the side edge on the side of, and the cutting means 8 is provided on the intermediate plate 5. Then, a laminated block 6 is formed by using the intermediate plate 5 having the blade portions 5a in the same manner as in FIG. 10, the laminated block 6 is molded in the same manner as in FIG. 10, and then the laminated block 6 is taken out. Next, by sliding the intermediate plate 5 horizontally to the bent portion 3a side in a state where the laminated body 7 is opened upward, the bent portion 3a of the band 3 is cut by the blade-shaped portion 5a and each laminated body 7 is cut. Can be separated. In this way, the band 3 can be cut by using the intermediate plate 5 to separate the laminate 7, and the laminate 7 can be separated without damaging the laminate 7. Is.

The blade portion 5a of the intermediate plate 5 is formed as shown in FIG. 8 (a), or is formed by inclining the blade portion 5a obliquely as shown in FIG. 8 (b). ) Can be formed in a triangular shape. FIG. 9 shows an embodiment of the invention of claim 9 in which the intermediate plate 5 is hollow to form a double structure, and as shown in FIG. Cutter 1 that constitutes cutting means 8
1 is inserted in a nested manner. The cutter 11 can project from the opening at the side end of the intermediate plate 5. Then, using the intermediate plate 5 into which the cutter 11 is inserted, a laminated block 6 is formed in the same manner as in FIG. 10, and this is molded in the same manner as in FIG.
Take out. Next, as shown in FIG. 9B, the cutter 11 is projected from the inside of the intermediate plate 5 and slidably moved to the bent portion 3 a side, so that the bent portion 3 a of the band 3 is cut by the cutter 11 and each laminated body 7 is cut. Can be separated. In this way, the band 3 can be cut by using the intermediate plate 5 to separate the laminated body 7. Further, in this case, the laminated body 7 after molding is stacked by the cutter 11 as it is. It is possible to cut the band 3 to separate the laminates 7, the separation work can be performed quickly, and the cutting / separation can be easily automated.
Further, since the cutter 11 slides in the intermediate plate 5,
The cutter 11 does not damage the laminated body 7.

In each of the examples shown in FIGS. 1 to 9 above, ultrasonic vibration is applied to the wire 9, the blade-shaped plate piece 10, the cooling pipe 26, the intermediate plate 5 and the cutter 11 which constitute the cutting means 8 at the time of cutting. May be applied (the invention of claim 14). When the band 3 is cut while applying ultrasonic vibration to the cutting means 8 in this way, it is possible to perform cutting without causing burrs on the cut surface and powder drop.

The above-described structure (claim 11) for cutting off the power supply to the band 3 by cutting the band 3 to stop the heat generation can be applied as it is to the structure shown in FIGS. 1 to 9. Further, the above-described configuration (claim 12) in which the fold line 12 is provided in the bent portion 3a of the band 3 in FIG. 3 can be applied as it is to the other configurations in FIGS. Further, the above-described configuration (claim 13) in which the cutting means 8 and the cooling means 13 are used in common in FIG. 6 can be applied to the other configurations in FIGS. 1 to 9.

[0038]

As described above, according to the first aspect of the invention, a band formed by a long length of metal foil is laminated on a sheet-shaped synthetic resin material to form a laminated combination material, and a plurality of laminated layers are formed in the longitudinal direction of the bands. By forming a combined material and bending the band between adjacent laminated combined materials, a plurality of laminated combined materials are stacked in multiple stages via an insulating intermediate plate to form a laminated block, and the laminated block is energized to the band. When a laminate is manufactured by press molding, the cutting means that is movable in advance is provided in the bending portion of the band at the stage of the above-mentioned lamination process, and the bending portion of the band is cut by the cutting means. So
This prevents the laminate from being damaged by the cutting means as in the case where the cutting means is inserted into the bent portion of the band to perform the cutting after the molding is completed.

According to the second aspect of the present invention, since the bent portion of the band is cut in a state where the laminated plates are laminated after the forming step, the band is cut while the laminated body after forming is stacked. Each laminate can be separated, the separation work can be performed quickly, and the cutting / separation can be easily automated. The invention of claim 3 is:
In the stage of the laminating process, a movable cutting means is provided in advance in the bent portion of the band, and the bent portion of the band is cut by the cutting means in a state where the laminated plates are laminated after the molding process. As in the case of cutting by inserting cutting means into the bent portion of the band after completion, the laminate is not damaged by the cutting means, and the band is cut while the laminated body after molding is stacked. The laminate can be separated, the separation work can be performed quickly, and the cutting / separation can be easily automated.

The invention of claim 4 is characterized in that the cutting means is formed independently of the intermediate plate, and various kinds of cutting means can be used. The invention of claim 5 is characterized in that a cutting means is formed at the end of the intermediate plate, and the band is formed by using the intermediate plate for ensuring the flatness of the laminated plate and performing the forming. It can be cut.

The invention of claim 6 is characterized in that the cutting means is formed of a wire, and the bent portion of the band is cut by moving the wire while tensioning the wire. The band can be cut. Further, the invention of claim 7 is characterized in that the bent portion of the band is cut while winding the wire, and the band can be easily cut by winding the wire.

The invention of claim 8 is characterized in that the cutting means is formed of a blade-shaped plate piece, and the band can be cut with a simple structure of the blade-shaped plate piece. . The invention of claim 9 is characterized in that the bent portion of the band is cut by slidingly moving the intermediate plate, and the intermediate plate for performing molding while ensuring the flatness of the laminated plate is slid. The band can be cut by itself.

The invention of claim 10 is characterized in that the intermediate plate is formed in a double structure, and the bent portion of the band is cut by the cutter protruding from the inside of the intermediate plate. The band can be cut by projecting the cutter from the inside of the intermediate plate while the laminated body after molding is stacked, so that the separating work of the laminated plate can be performed quickly and the cutting / separation can be easily automated. Moreover, since the cutter slides in the intermediate plate, the band can be cut without damaging the laminate with the cutter.

Further, the invention of claim 11 is characterized in that the energization to the band is turned off at the same time as the cutting of the band, and the energization to the band is stopped at the same time as the cutting of the band to stop the heat generation. It is possible. The twelfth aspect of the invention is characterized in that a fold line is formed in the bent portion of the band, and the band can be accurately cut along the fold line.

In the thirteenth aspect of the present invention, the cutting means also serves as the cooling means, and the laminated body after molding can be forcibly cooled by using the cutting means, and the laminated body is manufactured. The lead time can be shortened. Further, the invention of claim 14 is characterized in that the band is cut while applying ultrasonic vibration to the cutting means, which enables cutting without burrs and powder falling on the cut surface. Is.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an intermediate plate according to the embodiment of the present invention.

FIG. 3 is a perspective view showing an embodiment of the present invention.

FIG. 4 is a perspective view showing an embodiment of the present invention.

FIG. 5 is a perspective view showing an embodiment of the present invention.

FIG. 6 shows an embodiment of the present invention,
(A) is a perspective view, (b) is a partially expanded perspective view of a cooling pipe.

FIG. 7 is a perspective view showing an embodiment of the present invention.

FIG. 8 shows an intermediate plate according to an embodiment of the present invention, in which (a), (b) and (c) are perspective views, respectively.

FIG. 9 shows an intermediate plate according to an embodiment of the present invention, in which (a) and (b) are cross-sectional views, respectively.

FIG. 10 is a schematic cross-sectional view showing molding of the laminated plate according to the embodiment of the present invention.

FIG. 11 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 Sheet Synthetic Resin Material 2 Metal Foil 3 Band 4 Laminated Combination Material 5 Intermediate Plate 6 Laminated Block 7 Laminated Body 8 Cutting Means 9 Wire-like Body 10 Cutlery Plate Piece 11 Cutter 12 Fold 13 Cooling Means

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[Procedure amendment]

[Submission date] February 5, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Next, the production of the above-mentioned laminated body 7 will be described by specifically showing the material names and molding conditions. As the sheet-shaped synthetic resin material 1, a prepreg 1a made of an epoxy resin-impregnated glass cloth and an inner layer material 1b made by forming inner layer circuits on both surfaces of a glass cloth base epoxy resin inner layer board are used. Prepregs 1a were arranged on both sides of 1b to form one set. As the metal foil 2 forming the band 3, a copper foil having a thickness of 18 μm was used. Further, as the intermediate plate 5, an aluminum plate having a surface hard anodized and impregnated with ethylene tetrafluoride to form an electric insulating coating having a thickness of 30 to 60 μm on the entire surface was used.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hidekazu Takano, 1048, Kadoma, Kadoma, Osaka Prefecture, Matsushita Electric Works Ltd. (72) Inventor, Takeshi Tomisaki, 1048, Kadoma, Kadoma, Osaka Prefecture

Claims (14)

[Claims] 1. A laminated combination material is formed by stacking a long band of metal foil on a sheet-shaped synthetic resin material to form a laminated combination material, and forming a plurality of laminated combination materials in the longitudinal direction of the band and adjoining laminated combination materials. A multilayer block is formed by stacking a plurality of laminated combination materials in multiple stages through an insulating intermediate plate by bending the band between them to form a laminated block, and pressing the laminated block while energizing the band to manufacture a laminated body. In this case, a method of manufacturing a laminated body, characterized in that a movable cutting means is provided in advance at the bent portion of the band at the stage of the above-mentioned laminating step, and the bent portion of the band is cut by the cutting means. 2. A laminated combination material is formed by stacking a long strip of metal foil on a sheet-shaped synthetic resin material to form a laminated combination material, and forming a plurality of laminated combination materials in the longitudinal direction of the band and adjoining laminated combination materials. A multilayer block is formed by stacking a plurality of laminated combination materials in multiple stages through an insulating intermediate plate by bending the band between them to form a laminated block, and pressing the laminated block while energizing the band to manufacture a laminated body. In doing so, a method for manufacturing a laminated body, comprising cutting the bent portion of the band in a state where the laminated plates are laminated after the forming step. 3. A laminated combination material is formed by stacking a long band of metal foil on a sheet-shaped synthetic resin material to form a laminated combination material, and forming a plurality of laminated combination materials in the longitudinal direction of the band and adjoining laminated combination materials. A multilayer block is formed by stacking a plurality of laminated combination materials in multiple stages through an insulating intermediate plate by bending the band between them to form a laminated block, and pressing the laminated block while energizing the band to manufacture a laminated body. In this case, a movable cutting means is provided in advance in the bent portion of the band in the step of the above-mentioned laminating step, and the bent portion of the band is cut by the cutting means in a state where the laminated plates are laminated after the forming step. And a method for manufacturing a laminate. 4. The method for manufacturing a laminated body according to claim 1, wherein the cutting means is formed independently of the intermediate plate. 5. The method for producing a laminated body according to claim 1, wherein a cutting means is formed at an end portion of the intermediate plate. 6. The cutting means is formed of a wire,
The method for manufacturing a laminate according to claim 4, wherein the bent portion of the band is cut by moving the wire while tensioning the wire. 7. The method for producing a laminate according to claim 6, wherein the bent portion of the band is cut while winding the wire. 8. The method for producing a laminate according to claim 4, wherein the cutting means is a blade-shaped plate piece. 9. The method for producing a laminate according to claim 5, wherein the bent portion of the band is cut by slidingly moving the intermediate plate. 10. The method for producing a laminate according to claim 5, wherein the intermediate plate has a double structure, and the bent portion of the band is cut by the cutter protruding from the inside of the intermediate plate. 11. The method for manufacturing a laminate according to claim 1, wherein the energization of the band is turned off at the same time as cutting the band. 12. The method for manufacturing a laminate according to claim 1, wherein a fold line is formed in a bent portion of the band. 13. The method for manufacturing a laminate according to claim 1, wherein the cutting means also serves as a cooling means. 14. The method for producing a laminate according to claim 1, wherein the band is cut while applying ultrasonic vibration to the cutting means.