JPH09323200A - Method and device for press forming - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the manufacture cycle of a press product by installing hot presses in the ratio of one cold press to plural hot presses in a press forming device. SOLUTION: The press forming device is equipped with an assembling device 18 making a laminated object by overlaying members such as base plate, copper foil, etc. The laminated objects formed by these assembling device 18 are placed on a carrier plate, are transferred to an in-stocker 22 installed on a first hot plate machine 10 side by an in-conveyor 20, and are stocked. Also, on a cold press 16 side, an out-stocker 24 is installed. Onetime press forming quantity of the press products press formed by first to third hot presses 10, 12, 14 and cold press 16, is transferred to this out-stocker 24, and is stocked. And, press formed articles are transferred to a disassembling device 28 together with the carrier plate from this out-stocker 24 by an out-conveyor 26.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a press molding method capable of producing a pressed product such as a laminated printed wiring board or a laminated printed multilayer board with an excellent molding cycle, and a press advantageously used for carrying out such a press molding method. The present invention relates to a molding device.

[0002]

2. Description of the Related Art Conventionally, as a type of press molding apparatus used for manufacturing a pressed product such as a laminated printed wiring board and a laminated printed multilayer board, a plurality of hot press machines for forming a press molded article by a hot press, and A cold press machine for cold-pressing a press-formed product formed by a hot press machine to obtain a pressed product is provided at a ratio of one hot press machine to two or more hot press machines. There is known a structure provided with a conveying means for conveying a press-formed product from the hot press machine to the cold press machine. In general, the time required for the cooling press is sufficiently shorter than the time required for the heating press. Therefore, using such a press molding apparatus, the heating press is independently and continuously performed by each hot press machine. By transporting the obtained press-formed product to the cold press machine and performing cold-pressing, a large number of press products can be continuously produced.

By the way, when a press product is manufactured by using such a press machine, ideally, when hot press by each hot press machine is continuously repeated, each hot press machine It is desirable that the press-formed products are formed so as to be offset from each other for a time longer than that required for the cooling press so that the cooling press is performed by the cold press machine without waiting time. However, if the hot presses by multiple hot press machines are completed (formation of press-formed products) at the same time or if the time intervals are short, there is a waiting time until the cold press machine becomes vacant in one hot press machine. This is because the manufacturing cycle of the pressed product is shortened because of the necessity, and the temperature history at the time of manufacturing is different between the products, which may cause a problem such as variation in product quality.

However, in the press machine, since it is necessary to continuously manufacture a plurality of types of press products, the hot press time in each hot press machine is different, or the hot press time in one hot press machine is different. Since there are cases where there are changes, the hot presses completed by multiple hot press machines may overlap in time, or the time intervals may become short, and the hot press machine tends to have idle waiting time for cold press machines. There was a problem. For that reason, it is difficult to improve the manufacturing cycle and stabilize the product quality, and the waiting time in the hot press machine is such that the number of hot press machines per cold press machine is increased. Since it is likely to occur, it is difficult to install many hot pressing devices for the operating rates of the cold pressing device and the hot pressing device, and it is difficult to effectively use the devices.

[0005]

The present invention has been made in view of the circumstances as described above, and the problem to be solved is that the ratio of two or more cold press machines is one. When a press product is manufactured by a press device in which a hot press machine is installed, the idle waiting time of the cold press machine in the hot press machine, that is, the occurrence of a substantial downtime of the hot press machine is prevented or suppressed. Another object of the present invention is to provide a press molding method capable of improving the manufacturing cycle.

Another object of the present invention is to provide a press molding apparatus that can be used directly and suitably when carrying out such a press molding method.

[0007]

In order to solve the problems as described above, the feature of the present invention as set forth in claim 1 relating to a press molding method is that the ratio of two or more units to one unit of the cold press machine is set. A plurality of hot press machines are installed to continuously perform hot pressing, and the obtained press-formed product is conveyed to the cold press machine and cooled to obtain a plurality of press products continuously. At that time, during the cooling press for the press-formed product of the cold press machine, when another press-formed product is obtained by the heating press by the hot press machine, another hot-pressed product is obtained by the hot press machine. It is a press-molding method in which a cooling press for a press-formed product is carried out subsequently to a heating press.

According to the method of the present invention as set forth in claim 1, when the hot press is completed in one of the hot press machines while the cold press machine is performing the cooling press, the cooling in the cold press machine is performed. The hot press is followed by the cold press without waiting for the completion of the press.

Therefore, even if the completion of hot pressing by a plurality of hot press machines is overlapped in time or the time interval is shortened, the cold press machine in the hot press machine waits for empty space in the press molding process. The time is prevented from occurring, and the hot press is followed by the cold press, which improves the production cycle of the pressed product and can advantageously achieve the stabilization of the product quality. .

Further, according to the method of the present invention, it is possible to avoid the idle waiting time of the cold press machine in the hot press machine during the press molding process and to ensure the effective use of the apparatus, and Since the number of installed products can be increased, there is also an advantage that it is possible to easily cope with mass production of press products.

Furthermore, according to the method of the present invention, it is possible to reduce the time required to convey the press-formed product from the hot press machine to the cold press machine, which also improves the molding cycle. Can be achieved.

The present invention according to claim 2 is the press molding method according to claim 1, wherein the controller of each hot press machine performs a press operation from the start of the heating press to the completion of the cooling press. Is set in advance,
In carrying out such a press operation, the operating state of the cold press machine is detected at the time of completion of the heating press, and if the cold press machine is in an empty state, the press operation in the hot press machine is terminated halfway and heating is performed. The press-formed product obtained by pressing is conveyed to the cold press machine, and the next hot press is started in the hot press machine, while the cold press machine is operating, the press in the hot press machine is started. It is also characterized by continuing the operation.

According to the method of the present invention as set forth in claim 2, the operation of the hot press machine can be easily controlled according to the operating state of the cold press machine, and the cold press machine operates. When the hot press of the hot press machine is completed, the operation of the hot press machine is
The heating press can be smoothly transferred to the cooling press.

On the other hand, a feature of the present invention as set forth in claim 3 relating to a press molding apparatus is that a plurality of hot press machines for forming a press molded product by hot pressing, and a press formed by the hot press machine. A cold press machine that cools and presses a molded product into a pressed product is provided at a ratio of two or more hot press machines to one cold press machine, and the press molded product is the hot press machine. In the press forming apparatus provided with the conveying means for conveying from the cold press machine to the cold press machine, a cooling mechanism for performing a cooling press is provided for each of the plurality of hot press machines.

In the press-forming apparatus having the structure according to the present invention as defined in claim 3, any hot press machine can perform both heating press and cooling press. Therefore, if the cold press machine is in operation when the hot press machine completes the hot press machine, the hot press machine should be followed by the hot press machine and the cooling press machine for the press-formed product. Therefore, the method of the present invention according to claim 1 can be advantageously carried out.

Further, the present invention according to claim 4 is the press molding apparatus according to claim 3, wherein: (a) detection means for detecting whether the cold press machine is operating or not operating the cooling press; (B) In each of the above hot press machines,
At the time of completion of the heating press, the operating state of the cold press machine is judged based on the detection signal of the detecting means, and if the cold press machine is in an empty state, the conveying means performs the press forming from the hot press machine. The product is taken out and the hot press for forming the next press-formed product is started. On the other hand, if the cold press machine is in operation, the cold-pressed machine is used for the press-formed product. It is also characterized in that it is provided with a controller for subsequently carrying out the cooling press.

In the press-forming apparatus having the structure according to the present invention as described in claim 4, when the hot-pressing by the hot press machine is completed and the press-formed product is obtained, it is detected by the detection means. The method of the present invention according to claim 1, wherein the controller determines which of a cold press machine and a hot press machine should perform the cooling press on the press-formed product according to the operating state of the cold press machine. Advantageously, the press-formed product can be cold-pressed without waiting time by either a cold press machine or a hot press machine.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

First, FIG. 1 is a model view showing a plan view of a press forming apparatus for producing a laminated printed multilayer board according to the method of the present invention. This press-molding device is provided with first,
Second and third three hot press machines 10, 12, 14
And a single cold press machine 16. And
The first to third hot press machines 10, 12, 14 and the cold press machine 16 heat-press the laminate for forming a laminated printed multilayer board, and subsequently apply a cooling press. , The intended pressed product (laminated printed multilayer board) is manufactured.

More specifically, the press molding apparatus of this embodiment is a framing device 18, 18 for stacking members such as substrates and copper foils for producing a laminated printed multilayer board to form a laminate.
The in-stocker 22 installed on the first hot press machine 10 side by the in-conveyor 20 is provided with the laminate formed by these arranging devices 18, 18. It has been transported to and stocked. In the in-stocker 22, a plurality of laminates are stocked in such a state that they can be supplied to the first to third hot press machines 10, 12 and 14 one by one by press molding.

An out-stocker 24 is installed on the cold press machine 16 side, and the first to third hot press machines 10, 12, 14 and the cold press machine 16 are installed.
One press-formed portion of the press product press-formed by is conveyed to the out stocker 24 and stocked. The press-formed product is conveyed from the out stocker 24 together with the carrier plate to the dismantling device 28 by the out conveyor 26. In the dismantling device 28,
The press-molded products are removed from the carrier plate, and the press-molded products are sorted according to types and the like. Further, although not shown, a return device for cleaning the carrier plate removed from the press-molded product and returning it back to the assembly device 18 is required between the disassembly device 28 and the assembly device 18. Will be installed accordingly.

Further, the laminated product supplied from the in-stocker 22 is heated and pressed to obtain a press-formed product, and the press-formed product is subjected to a cooling press to form a pressed product. ~ Three hot press machines 1
0, 12, 14 and cold press machine 16
Located between the stocker 22 and the out stocker 24,
It is installed side by side on a straight line. Also, these in-stocker 22, first to third hot press machines 10, 12, 1
4, cold press 16 and out stocker 24
A rail 30 extending substantially parallel to the direction of arrangement of the rails is laid on the side of, and the rail 30 guides a loader / unloader 32 as a transporting means to guide the in-stocker 22, the first to third units. Hot press machine 10,1
2, 14, the cold press machine 16 and the side of the out stocker 24 can be reciprocated in the arrangement direction thereof.

By the loader / unloader 32, a laminate or a press-formed product is provided between the in-stocker 22, the first to third hot press machines 10, 12, and 14, the cold press machine 16 and the out-stocker 24. Alternatively, the pressed product is carried in, carried and carried out while being placed on the carrier plate.

Here, although not explicitly shown in the drawings, the first to third hot press machines 10, 12, 14 and the cold press machine 16 are, for example, arranged so as to face each other so as to be movable toward and away from each other. A plurality of press plates are movably arranged between the fixed plate and the movable plate,
The movable platen is moved closer to the fixed platen, and the fixed platen and the movable platen are clamped by sandwiching a plurality of press plates, so that a plurality of workpieces set between the press plates can be pressed at once. Those having a multi-stage press structure adapted to add are preferably adopted. In the press machine 10, 12, 14, 16 having such a multi-stage press structure, when loading and unloading a plurality of laminates and press-formed products with respect to each press stage (between each press plate), A plurality of laminates and press-formed products are placed and handled on a single carrier plate.

Then, in the first to third hot press machines 10, 12 and 14 having such a multi-stage press structure, a laminate is set between the press plates and each press plate is heated to a predetermined temperature. While performing the press operation while
It is possible to subject each laminate to hot pressing, whereby the laminates are integrated to form a press-formed product. On the other hand, in the cold press machine 16 having a multi-stage press structure, the press-formed product obtained by the heat press by any of the first to third hot press machines 10, 12, 14 is set between the press plates. However, cold pressing can be performed on each laminate by performing a pressing operation while cooling each press plate, whereby the press-formed product is cooled and solidified to obtain the desired press product. Laminated printed multilayer boards have been obtained. The heating / cooling mechanism in the press plate is not particularly limited, but for example, a heating wire, a heating medium, or a heating mechanism using steam can be preferably used as the heating mechanism, while the cooling mechanism is a cooling mechanism. A cooling mechanism or the like by circulating water can be suitably adopted. Each of the hot press machines 10, 12, 14 and the cold press machine 16 is equipped with a press temperature adjusting device for adjusting the temperature of the press plate and a press pressure adjusting device for adjusting the press pressure. The workpiece inserted into the can be pressed at a set temperature and pressure.

In each of the first to third hot press machines 10, 12 and 14, not only the heating mechanism but also the cooling mechanism is incorporated into the press plate. Then, the cooling mechanism can also perform a cooling press by performing a pressing operation while cooling each press plate. As the cooling mechanism in the first to third hot press machines 10, 12, 14 as well, as in the cold press machine 16, a cooling mechanism by circulating cooling water or a cooling medium can be preferably adopted.

Therefore, the first to third hot press machines 10,
In both Nos. 12 and 14, after heating and pressing the laminate carried in from the in-stocker 22,
It is also possible to convey the obtained press-molded product to the cold press machine 16 and subject it to a cooling press, but the press-molded product obtained by the heating press is not carried out and the first-third The hot press machines 10, 12, and 14 are capable of subjecting such press-formed products to a cooling press.

The press forming apparatus having the above-described structure is operated and controlled by the controller 34 using a microcomputer or the like, so that the first to third hot pressing machines 10, 12, 14 and the cold pressing machine are operated. The heating press and the cooling press are continuously performed by 16, so that a plurality of pressed products are continuously produced.

That is, first, the stacks placed on the carrier plate by one stage in the assembling devices 18 and 18 are sent to the in-conveyor 20 according to the instruction of the controller 34, and are carried into the in-stocker 22. In the in-stocker 22, a plurality of carrier plates on which the laminates are placed are respectively used as one press-molding portion and the first to third hot press machines 10, 12, 1 are used.
Stock so that it can be inserted between the press plates of any of 4 above.

Next, the loader / unloader 32 is driven in accordance with a command from the controller 34, and the carrier plate stocked for each press molding is carried out from the in-stocker 22 and the press is completed and becomes empty. The hot press machine 10 (12, 14) is conveyed to any one of the first to third hot press machines 10, 12, 14 and carried in between the press plates of the hot press machine 10 (12, 14). ) Set the laminate between the press plates. Then, the hot press machine 10 (12, 1)
In 4), according to a program preset in the controller 34, each press plate is heated to a preset temperature, and is pressed at a preset pressure, so that each laminate is heated and pressed.

After that, the hot press machine 10 (12, 1)
When the hot press according to 4) is completed, the operating state of the cold press machine 16 is checked. The check operation is performed by the cold press machine 1 by the controller 34.
6 or by a program preset in the controller 34. As is apparent from this, in the present embodiment, whether the cold press machine 16 is in an idle state of the cooling press or not. The detection means for detecting is constituted by the controller 34.

Subsequently, if the cold press machine 16 is in an empty state (a state in which the cooling press is not being executed), the pressure of the hot press machine 10 (12, 14) that has been hot-pressed is released according to a command from the controller 34. After that, the loader / unloader 32 is driven to drive the hot press machine 10
The press-formed product, which is heat-pressed between the press plates of (12, 14), is carried out from the hot press machine 10 (12, 14) while being placed on the carrier plate, and conveyed to the cold press machine 16. The cold press machine 16 is loaded between the press plates. Then, in such a cold press machine 16, according to a program preset in the controller 34, while pressing each press plate to a preset temperature, by pressing at a preset pressure, each press molded product is pressed. And apply a cooling press. In the cooling press, the press-formed product is generally cooled from the temperature at the time of completion of the heating press to a temperature around room temperature at which an operator can touch and work.

On the other hand, if the cold press machine 16 is in the operating state (the state where the cooling press is being performed), the pressure of the hot press machine 10 (12, 14) that has been hot-pressed is released according to the instruction of the controller 34. After that, pressurize again or leave the pressure as it is,
By pressing each press plate while cooling it according to a program preset in the controller 34, for the press-formed product that is heat-pressed between the press plates,
A heating press is followed by a cooling press.

The hot press machine 10 (1
2, 14) and the cold press by the cold press machine 16, for example, for the program of the hot press machine 10 (12, 14) in the controller 34, as shown in FIG. The continuous pressing process until completion is stored in advance, and when the heating press is completed: At P, the operating state of the cold press machine 16 is confirmed. Time point: While stopping the pressing process at P, the cold press machine 1 is stopped at such time point: P
6 is in the operating state, the hot press machine 10 (12, 1
It can be advantageously carried out by continuing the pressing step in 4) until the cooling press is completed.

Next, when the cooling press by the cold press machine 16 or the cooling press by the hot press machine 10 (12, 14) is completed, according to the instruction of the controller 34, the cold press machine 16 or the hot press machine 10 is instructed.
After the pressure of (12, 14) is released, the loader / unloader 32 is driven, and the cold press machine 16 or the hot press machine 10 (12, 14) is driven with the cold-pressed press product being placed on the carrier plate. From the stocker 24 to be carried and carried into the out stocker 24. Then, in this out stocker 24, one press-molded portion of the carrier plate on which the pressed products are placed is stocked.

Then, according to a command from the controller 34, the press-formed products stocked in the out stocker 24 are sent out to the out conveyor 26 for each carrier plate, carried into the dismantling device 28, and the dismantling device 28
In step 1, the plurality of press products are removed from the carrier plate, and when there are a plurality of types of press products, the press products are sorted by type. As a result, the desired pressed product can be obtained.

That is, according to such a press molding method, the cold press machine 16 is in the operating state at the time when the hot pressing by any of the first to third hot press machines 10, 12, and 14 is completed. Even in such a case, the press-formed product obtained by the heating press can be immediately subjected to the cooling press by the hot press machine 10 (12, 14) without waiting time.

By the way, in the case of manufacturing a plurality of types of press products having different time required for heating and pressing according to the above-mentioned method, the press machines 10, 12, 14,
A specific example of 16 operating states is shown in FIG. In FIG. 3, the heating press operating time in each of the press machines 10, 12, 14, 16 is indicated by a wide arrow, and the cooling press operating time is indicated by a narrow arrow. Further, the heating and pressing time required for manufacturing various pressed products varies depending on the material and size of the product, and varies in the range of, for example, 1 hour to 2 hours, but it is not necessary to make the cooling pressing time different. It is set constant for 30 minutes. Further, FIG.
Pressed products that require the same hot press time as shown in 1.
4 is shown as a comparative example in the case of being manufactured according to the conventional method which is carried out only in the cold press machine 16 without carrying out in 4. In FIG. 4, each hot press machine 10, 12,
The waiting time at 14 (the time during which the hot pressing is not performed) is indicated by a dashed arrow.

As is clear from FIG. 3, in the present embodiment, any product can be subjected to the cooling press without waiting time after the completion of the heating press. Useless waiting time (press operation stop time) in any of the hot press machines 10, 12, and 14
Therefore, it is possible to secure an excellent operating rate and improve the productivity and hence the manufacturing cycle. On the other hand, FIG.
In the comparative example shown in (1), a large waiting time W occurs in the first to third hot press machines 10, 12, 14 and the operating rate of each hot press machine 10, 12, 14 is poor. Is recognized.

In the press forming method as described above, the hot press machine 1 in which the press operation is completed without considering the cycle of the cold press machine 16 and the adjustment of the idle time.
Since the laminated products can be sequentially loaded into 0, 12, and 14 and the hot pressing can be performed, the controller 34 can easily control the device and further improve the manufacturing cycle. Becomes

In addition, in the above-described press molding method, the cooling press is performed by the hot press machines 10, 12, 14 as well, so that the installation ratio of the hot press machine to one cold press machine 16 (number of units) ) Can be increased, and there is also an advantage that productivity improvement can be advantageously achieved with a small capital investment.

Further, in the above-mentioned press molding method, since the cooling press is performed by the hot press machines 10, 12, 14 as well, the time for conveying the press-formed product,
In other words, even if the operating time of the loader / unloader 32 is reduced, the productivity and thus the manufacturing cycle can be further improved.

Furthermore, in the above-mentioned press-molding method, since any press-molded product is cooled and pressed into a pressed product without waiting time after the heating-pressing, a heat-treated product is obtained. It is possible to prevent quality variations from occurring due to differences in history and the like, and advantageously stabilize quality.

The embodiments of the present invention have been described in detail above, but these are literal examples and the present invention should not be construed as being limited to such specific examples.

For example, in the above embodiment, three hot press machines 10, 12, 14 and one cold press machine 16 are used.
Although the press molding apparatus provided with was used, even in the press molding apparatus in which the hot press machine is installed at a ratio of two or four or more to one cold press machine, the present invention is also the same. The present invention is applicable, and the present invention is also applicable to a press forming apparatus equipped with two or more cold press machines.

Further, each hot press machine 10, 12, 14
The selective setting of the workpiece to be supplied to the hot press machine is not limited in any way. For example, by supplying a constant workpiece to each hot press machine, heating of each hot press machine is performed. It is also possible to keep the pressing time constant.

In addition, it goes without saying that the present invention can be advantageously applied to the production of various pressed products other than laminated printed multilayer boards.

Although not listed one by one, the present invention is
Based on the knowledge of those skilled in the art, it can be implemented in various modified, modified, and improved modes, and
It goes without saying that all such embodiments are included within the scope of the present invention, without departing from the spirit of the present invention.

[0049]

As is apparent from the above description, according to the press molding method of the present invention, in the press molding process, the idle waiting time of the cold press machine is generated after the hot press by the hot press machine is completed. As a result, the heating press is immediately followed by the cooling press regardless of the operating condition of the cold press, which improves the production cycle of the pressed product and also advantageously stabilizes the product quality. obtain.

Further, in the press molding apparatus having the structure according to the present invention, any hot press machine
Since the hot pressing can be performed subsequently to the cooling press, it can be suitably used in carrying out the press molding method of the present invention, and the method of the present invention can be advantageously carried out.

[Brief description of drawings]

FIG. 1 is a plan view schematically showing a press molding apparatus used for carrying out a method of the present invention.

FIG. 2 is an explanatory diagram showing a specific example of a control program for a hot press machine.

FIG. 3 is an explanatory diagram showing a specific example of the operating state of each press machine when a plurality of types of press products are manufactured according to the method of the present invention.

FIG. 4 is an explanatory diagram showing, as a comparative example, an operating state of each press machine when a plurality of types of press products, which are the same as the specific example shown in FIG. 3, are manufactured according to a conventional method.

[Explanation of symbols]

 10 First Hot Press Machine 12 Second Hot Press Machine 14 Third Hot Press Machine 16 Cold Press Machine 32 Loader / Unloader 34 Controller

Claims (4)

[Claims] 1. A plurality of hot press machines installed at a ratio of two or more to one cold press machine perform continuous hot pressing, and the obtained press-formed product is cold pressed. When a plurality of press products are continuously obtained by transporting to a press and cooling press, the hot press by the hot press machine is completed while the cold press is being performed on the press-formed product by the cold press machine. When the press-formed product according to (1) is obtained, a cooling press for the other press-formed product is carried out subsequently to the heating press with the hot press machine. 2. The press operation from the start of the heating press to the completion of the cooling press is preset in the controller of each hot press machine, and when the press operation is performed, the press operation is performed at the time of completion of the heating press. The operating state of the cold press machine is detected, and if the cold press machine is in an idle state, the press operation in the hot press machine is terminated halfway, and the press-formed product obtained by heating press is processed by the cold press machine. While carrying the next heating press in the hot press machine,
The press molding method according to claim 1, wherein the press operation in the hot press machine is continued if the cold press machine is in operation. 3. A plurality of hot press machines for forming a press-formed product by hot pressing, and a cold press machine for cold-pressing a press-formed product formed by the hot press machine into a pressed product. In a press molding apparatus provided with a transporting means for transporting the press molded product from the hot press machine to the cold press machine, in addition to the hot press machine being provided in a ratio of two or more machines per one machine, A press forming apparatus, wherein a cooling mechanism for performing a cooling press is provided for each of a plurality of hot press machines. 4. A detecting means for detecting whether the cold press machine is operating a cooling press or an empty state, and in each of the hot press machines, at the time of completion of the heating press, based on a detection signal of the detecting means. Judging the operating state of the cold press machine, and if the cold press machine is in the empty state, the conveying means takes out the press molded product from the hot press machine and heats it to form the next press molded product. The controller for starting pressing, while the cold pressing machine is in operation, the controller for subsequently performing cold pressing on the press-formed product by using the cooling mechanism in the hot pressing machine. Press molding equipment.