JPH07314405A - Press molding apparatus and press molding method - Google Patents

Abstract

PURPOSE:To contrive lowering of the cost of plant and equipment and an improvement in productivity, by a method wherein a fixed number of steps of heating platens and cooling platens are arranged in series between one side surface plate and the other side surface plate through a heat insulation material. CONSTITUTION:A press molding device 10 is provided with a lower surface plate 12 as a movable platen which is supported movably along a vertical direction and an upper surface plate 14 which is fixed at its height position on the upper part of the lower surface plate 12 and the lower surface plate 12 us moved and driven toward the upper surface plate 14 along the vertical direction by a pressurizing hydraulic cylinder 16. An intermediate heat insulation material 18 arranged at just an intermediate part is provided in a height direction between the lower surface plate 12 and upper surface plate 14. A fixed number of steps of cooling platens 22 are arranged between the intermediate heat insulation material 18 and lower surface plate 12 which is in a standing-up state by running along a vertical direction. By using only one press molding device 10 like this, a pressurizing and heating process and pressurizing and cooling process of a board material can be performed at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press molding apparatus for hot-pressing and cold-pressing a workpiece such as a plate material.

[0002]

2. Description of the Related Art Conventionally, when molding a plate material,
It may be necessary to sequentially apply the heating operation and the cooling operation to this plate material. As a molding system that can perform such heating cycle and cooling cycle,
A system including at least two press devices, a press device that exclusively performs a heating cycle and a press device that exclusively performs a cooling cycle, and a heating device and a cooling cycle that are alternately performed by one press device. Two types of systems are known.

[0003]

However, since the former system requires at least two press devices, the facility cost is high and the installation space in the factory is problematic. In the latter system, one press machine is used exclusively for the heating cycle, and then this is switched to be used exclusively for the cooling cycle. For this reason, there is a problem that it takes time at the time of cycle switching and productivity is deteriorated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce equipment costs and
It is to provide a press molding device that can improve productivity as well.

[0005]

In order to solve the above-mentioned problems and achieve the object, a press molding apparatus according to the present invention is
According to claim 1, between the one surface plate and the other surface plate, a predetermined number of heating plates and a predetermined number of cooling plates are arranged in series via a heat insulating material. It has a feature.

Further, the press molding method according to the present invention comprises a first step of inserting a workpiece between a predetermined number of heating plates arranged on one side between a fixed platen and a movable platen, A second step of driving the movable plate toward the fixed plate to pressurize and heat the workpiece between heating plates; and driving the movable plate to be separated from the fixed plate, The third step of releasing the pressure-heated work piece, and taking out the pressure-heated work piece from between the heating plates and arranging it on the other side between the fixed plate and the movable plate. A fourth step of inserting the cooling plate between a predetermined number of cooling plates provided, and driving the movable plate toward the fixed plate to pressurize the workpiece heated under pressure between the cooling plates. Fifth step of cooling, and the movable platen is driven so as to be separated from the fixed platen to release the press-cooled workpiece. A sixth step, and wherein said pressurized cooled workpiece that includes a seventh step of taking out from between the heating platen.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of the press molding apparatus according to the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the press molding apparatus 10 is constructed so that a work such as a plate material can be hot-pressed as well as cold-pressed. The lower surface plate 12 is provided as a movable platen that is movably supported along the upper surface plate 14 and the upper surface plate 14 is a fixed platen whose height position is fixed above the lower surface plate 12. A hydraulic cylinder 16 for pressure is configured to be moved and driven in the vertical direction toward the upper surface plate 14.

Further, the press molding apparatus 10 is provided with an intermediate heat insulating material 18 which is disposed just at an intermediate portion in the height direction between the lower surface plate 12 and the upper surface plate 14, and this intermediate heat insulating material 18 is provided. Between the lower surface plate 12 and the lower surface plate 12, a predetermined number of cooling plates 2
2 are arranged side by side in the vertical direction. A heating plate 20 having a predetermined number of stages is arranged between the intermediate heat insulating material 18 and the upper surface plate 14 in a line in the vertical direction.

Here, in this embodiment, the cooling board 2
The predetermined number of 2 and the predetermined number of heating plates 20 are set to the same number. In addition, the cooling board 22 at the bottom is the lower heat insulating material 2
The upper cooling plate 22 is fixed to the upper surface of the lower surface plate 12 via the upper surface of the lower insulating plate 18 and the lower surface of the intermediate insulating material 18 described above. On the other hand, the lowermost heating plate 20 is fixed to the upper surface of the intermediate heat insulating material 18, and the uppermost heating plate 20 is
It is fixed to the lower surface of the upper surface plate 14 via the upper heat insulating material 26.

Each cooling board 22 is connected to a cooling device (not shown) via a cooling medium circuit (not shown), and is configured to be constantly cooled by this cooling device.
On the other hand, each heating plate 20 is connected to a heating device (not shown) via a heating medium circuit (not shown), and is configured to be constantly heated by this heating device.

In press-molding the plate material P in the press-molding apparatus 10 configured as described above, first, as shown in FIG.
As shown in FIG. 3, a heating space H is defined as a space between adjacent plates of each heating plate 20 through a transfer device (not shown), the number of which is equal to the number of plates P of the heating plate 20.
Insert in S.

Thereafter, the hydraulic cylinder 16 is activated to raise the lower platen 12, and as shown in FIG. 2, the plate material P inserted into the heating space HS is heated by the heating plate 20 under pressure. Let After that, the operation of the hydraulic cylinder 16 is stopped, and the lower surface plate 12 is lowered. As a result, the plate material P is released from the heating plate 20 and can be taken out from the heating space HS. From this state, the heating space H in which the plate material P'which has been pressurized and heated is opened through the above-mentioned transfer mechanism
It is pulled out from S and moved downward, and as shown in FIG. 3, it is inserted into a cooling space CS which is defined as a space between adjacent cooling boards 22. In addition, a new plate material P
Through the transfer device into the heating space HS defined as a space between the mutually adjacent heating plates 20.

Thereafter, the hydraulic cylinder 16 is activated again to raise the lower platen 12, and the plate material P inserted in the heating space HS is pressurized by the heating platen 20 as shown in FIG. While being heated, the plate material P ′ inserted into the cooling space CS is cooled while being pressurized by the cooling board 22. After that, the operation of the hydraulic cylinder 16 is stopped and the lower surface plate 12 is lowered. As a result, the plate P is heated by the heating plate 20.
Is released from the heating space HS and the plate material P ′ is released from the cooling platen 22 so that it can be extracted from the cooling space CS.

From this state, the plate material P'which has been pressurized and heated is pulled out from the opened heating space HS via the above-mentioned transfer mechanism and moved downward to be inserted into the cooling space CS while being pressurized and cooled. Of the plate material P ″ is drawn out from the cooling space CS and stored in a storage rack (not shown). Further, a new plate material P is defined as a space between the mutually adjacent members of each heating plate 20 via a transfer device. It is inserted in the heating space HS.

In this way, one press molding apparatus 10
It is possible to simultaneously perform the pressurizing and heating step and the pressurizing and cooling step of the plate material P only by using the above, it is possible to reduce the equipment cost and effectively utilize the installation space of the factory. Become. Further, since the pressurizing and heating process and the pressurizing and cooling process of the plate material P are carried out at the same time without performing them alternately, the waiting time at the time of switching can be eliminated and the productivity can be improved. become.

Since each cooling plate 22 is arranged below each heating plate 20, the cooling plate 22 is arranged below the heating plate 20 as compared with the case where each cooling plate 22 is arranged above each heating plate 20. Not affected by heat.

The present invention is not limited to the configuration of the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[0019]

As described above in detail, according to the present invention,
It is possible to provide a press molding apparatus that can reduce the equipment cost and improve the productivity.

[Brief description of drawings]

FIG. 1 is a front view showing a configuration of an embodiment of a press molding apparatus according to the present invention in a state where a plate material is inserted between heating plates and a mold is opened.

FIG. 2 is a front view showing the configuration of the press molding apparatus shown in FIG. 1 in a state where a plate material is inserted between heating plates and the mold is clamped.

FIG. 3 shows a configuration of an embodiment of a press molding apparatus according to the present invention, in which a plate material is inserted between heating plates, a plate material after pressure heating is inserted between cooling plates, and a mold is opened. It is a front view shown by.

FIG. 4 shows the structure of the press molding apparatus shown in FIG. 1 in a state in which a plate material is inserted between heating plates and the plate material after heating under pressure is inserted between cooling plates and in a mold clamping state. It is a front view.

[Explanation of symbols]

 P Plate before pressure heating P ′ Plate after pressure heating P ″ Plate after pressure cooling 10 Press molding device 12 Lower surface plate (movable plate) 14 Upper surface plate (fixed plate) 16 Hydraulic cylinder for pressurization 18 Intermediate heat insulation Material 20 Heating board 22 Cooling board 24 Lower heat insulating material 26 Upper heat insulating material

Claims (6)

[Claims] 1. A press molding apparatus characterized in that a heating plate having a predetermined number of stages and a cooling plate having a predetermined number of stages are arranged in series between a fixed plate and a movable plate via a heat insulating material. 2. The press molding apparatus according to claim 1, wherein the number of arrangement stages of the heating platen and the number of arrangement stages of the cooling platen are set to be equal to each other. 3. The press molding apparatus according to claim 1, wherein the fixed plate and the movable plate are vertically separated from each other. 4. The press molding apparatus according to claim 3, wherein the heating plate having the predetermined number of stages is disposed above the cooling plate having the predetermined number of stages. 5. A first step of inserting an object to be processed between a predetermined number of heating plates arranged on one side between a fixed plate and a movable plate, and directing the movable plate toward the fixed plate. Driven to move the work piece under pressure between the heating plates, and the movable plate is separated from the fixed plate to drive the work piece under pressure and heating. And a third step of releasing the pressurized and heated workpiece from between the heating plates and placing a predetermined number of cooling plates on the other side between the fixed plate and the movable plate. A fourth step of inserting the space between them; a fifth step of driving the movable plate toward the fixed plate to press and cool the workpiece heated under pressure between cooling plates; A sixth step of driving the movable plate so as to be separated from the fixed plate to release the press-cooled workpiece, and the press-cooled workpiece. Press-molding method characterized in that comprises a seventh step of taking out the object from between the heating platen. 6. At the same time that the fourth step is executed,
The press molding method according to claim 5, further comprising a seventh step of inserting a new workpiece between the heating plates.