JPH0681680B2 - Temperature controller for tandem press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a hot press device provided with a program temperature control means for performing temperature control based on a preset program and a cold press device capable of temperature control. The present invention relates to a temperature control device for a tandem press device that is installed.

[Prior Art and Its Problems] Conventionally, when press-molding a glass epoxy copper clad substrate or the like, it is necessary to heat with a predetermined temperature change pattern, but all steps of this temperature change pattern from heating to cooling are performed. If a single press machine is used, the hot plate of the press machine must be heated and cooled at each step, resulting in poor thermal energy efficiency and long cycle time. Therefore, a tandem press machine is often used in which a hot press machine equipped with a program temperature control means for performing temperature control based on a preset program and a cold press machine capable of temperature control are arranged in parallel.

That is, in such a tandem press device, hot pressing is performed by a hot pressing device in a predetermined temperature change pattern based on a program, and at the same time, a molded product is transferred to a cold pressing device at a predetermined temperature during a cooling process by the hot pressing device. While it is placed and pressed by the cold press device and cooled to room temperature, the hot press device can act so as to start hot press of a new molded product, which allows a single press device to operate. The molding cycle can be shortened and the cost of heat energy can be reduced as compared with the case where all heating / cooling steps are performed.

By the way, the temperature control program of the hot press device in the tandem press device as described above is configured to start temperature rising from a predetermined reference temperature and cool to room temperature through a predetermined temperature change pattern. As long as there is no problem with the equipment, the hot press machine does not cool the molded product to room temperature (that is, molding is completed), but the molded product is transferred to the cold press machine at a transfer temperature higher than the preset room temperature. However, the temperature control is released at the time of this transfer to prepare for carrying in the next molded product.

On the other hand, the cold press machine heats up to a temperature at which the molded product is transferred when the temperature control program of the hot press machine has progressed to a predetermined position and waits, and when the hot press machine actually reaches the predetermined temperature, When the molded product is transferred, the standby is released and it is cooled to room temperature.

However, in the configuration in which the temperature control of the hot press is released when the molded product is transferred to the cold press as described above, the hot press starts the molding after the next molded product is carried in from the release time. There is a problem in that the temperature at the start of the next molding varies depending on the environmental temperature because it is left to cool (natural cooling). In other words, since the temperature control start temperature is not constant, an error occurs in the temperature control based on the program set based on the predetermined reference temperature, and this temperature error causes molding failure, and in order to prevent this, If the temperature control is started after stabilizing the temperature, it takes time and the working efficiency is lowered.

[Object of the Invention] In view of the above circumstances, the present invention provides a temperature control device for a tandem press device that can make the temperature control start temperature of the hot press constant and enables highly accurate temperature control based on a program. For the purpose of providing.

[Means for Solving the Problem] In order to achieve the above object, a temperature control device for a tandem press device according to the present invention is a hot press device provided with a program temperature control device for performing temperature control based on a preset program. And a cold press device capable of temperature control are provided side by side, hot press molding is performed on the basis of a program in the hot press device, and a molded product is transferred to the cold press device at a predetermined temperature during the cooling process. In a tandem press device configured to cool while pressing with the cold press device, a constant temperature control means for maintaining and controlling the hot press device at a predetermined temperature and a control mode of the hot press device are described as follows. Switching means for switching between a control mode of the temperature control means and a control mode of the program temperature control means. The switching means is characterized by switching from the control mode of the constant temperature control means to the control mode of the program temperature control means after the molded product is carried into the hot press machine.

Embodiments of the Invention Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 is a schematic configuration diagram of a tandem press device to which an embodiment of the present invention is applied. In the illustrated tandem press device, two multi-stage press devices are installed in parallel, and one press device is a hot press 10. At the same time, the other press device is a cold press 20. Further, a supply mechanism for supplying the molded product 1 to the hot press 10 on the left side of the hot press 10 in the drawing.
In the right side of the cold press 20 in the figure, a carry-out mechanism 40 for carrying out the molded product 1 is arranged, and the tandem press device carries the molded product 1 into the hot press 10 by the supply mechanism 30. After hot-pressing by the hot press 10, it is transferred to the cold press 20, cold-pressed, and then carried out from the cold press 20 by the carry-out mechanism 40.

The supply mechanism 30 includes a roller base 31 on which the article to be molded 11 is placed, which is arranged in a plurality of upper and lower stages corresponding to the press plates 11 of the hot press 10.
And a carry-in conveyor 32 for carrying the molded product 1 into the molded product 1 storage unit 31, and each roller base 31A of the molded product 1 storage unit 31 ...
And the corresponding pressing member 33A ... Can be moved in the horizontal direction.

The unloading mechanism 40 includes the press plate 21 of the cold press 20 ...
The receiving mechanism 41 capable of raising and lowering the plurality of stages of holding plates 41A corresponding thereto, the transfer mechanism 42 capable of moving the claw member 42A in the transfer direction, and the molded product 1 received by the receiving mechanism are delivered. It is composed of a delivery conveyor 43.

The hot press 10 and the cold press 20 have exactly the same configuration, and press plates 11 ..., 21 ... Are provided between a fixed platen (not shown) arranged above and movable plates 12, 22 that are hydraulically moved up and down.
Are arranged in a plurality of stages, and the movable plates 12 and 22 are lifted so that the press plates 11 ..., 21 ... are sequentially placed on the movable plates 12 and 22 from the lower side and finally sandwiched between the fixed plates. , The press-molded articles 1 placed on the respective press plates 11, ..., 21 are compressed at a predetermined pressure.

Further, the press plates 11, ..., 21 ... of the two presses 10, 20 have program setters 16, 26 in which respective temperature change programs are set, as shown in the block diagram of the temperature control system of FIG.
The temperature is controlled by temperature controllers 15 and 25 to which temperature command information is input from. That is, press 10,2
The press plates 11 ..., 21 ... (not shown in FIG. 3) of 0 are provided with heating / cooling mechanisms 13, 23 and temperature sensors 14, 24 such as thermocouple thermometers, respectively. Temperature controller 15, based on the temperature information from the temperature sensor 14, 24,
25 controls the heating / cooling mechanisms 13 and 23 by feedback control according to the temperature change program set in the program setters 16 and 26 to adjust the temperature.

In addition to the program setting device 16, the hot press 10
A constant temperature setting device 17 for outputting command information for maintaining the hot press 10 (press plate 11 ...) At a predetermined constant temperature is provided to the temperature controller 15.

That is, in the hot press 10, the temperature controller 15 and the program setting device 16 constitute the program control system 60 as the program control means, and the temperature controller 15 and the constant temperature setting device 17 serve as the constant temperature control means. The constant temperature control system 70 of FIG.

Here, as shown in FIG. 4 (A), the program setting device 16 has a program of a temperature change pattern in which the temperature starts to rise from the reference temperature: X, is heated at a predetermined temperature for a predetermined time, and is then cooled to room temperature. On the other hand, the constant temperature setting device 17 is set to output command information for maintaining the hot press 10 at the reference temperature: X to the temperature controller 15. The program control system 60 and the constant temperature control system 70 are switched by switching the program setting device 16 and the changeover switch 18 interposed between the constant temperature setting device 17 and the temperature controller 15 to the control device for the entire tandem press device. 50 is controlled by switching. That is, by switching the change-over switch 18, the temperature controller 15 switches which command information is used to perform temperature control.

Further, the cold press program setter 26 of the cold press 20 is set with a temperature change pattern program similar to the cooling pattern of the reference temperature: X or lower during the cooling process of the hot press 10 as shown in FIG. 4 (B). ing.

The control device 50 mechanically controls the operation of the entire tandem press device and, in synchronization with this, controls the hot press.
The temperature controllers 15 and 25 of the cold press 10 and the cold press 20 are operated and controlled.

Thus, the tandem press device configured as described above is
When the molded article 1 is molded, it is controlled by the control device 50 and operates as follows.

First, the constant temperature control system 70 starts constant temperature control to maintain the hot press 10 at the reference temperature: X, and the roller base 31A ... The article 1 to be molded is placed on the table 31A, and the pressing member 33A of the transport unit 33 is moved to move the roller table 31A.
The above-mentioned molded product 1 is press plate 11 of hot press 10 ...
Reprinted above.

Next, the hot press 10 is driven and pressed at a predetermined pressure, and the temperature control is switched from the constant temperature control system 70 to the program control system 60 (that is, the temperature control information to the hot press temperature controller 15 is set to the constant temperature). Setting device 17 to program setting device 16
Then, the temperature control based on the temperature change pattern program set in the program setter 16 is started (point a in FIG. 4). At this time, the hot press 10 is maintained at the reference temperature: X (that is, the start temperature of the temperature change pattern program) by the constant temperature control by the constant temperature control system 70.
The temperature control based on the temperature change pattern program can be started immediately and with high accuracy.

When the temperature control of the hot press 10 by the program control system 60 enters the cooling process through the heating / heat retaining process, and when the temperature reaches a predetermined temperature higher than the reference temperature: X shown in FIG. 4b, the temperature of the cold press 20 is raised. When starting and reaching the reference temperature: X, maintain at that temperature.

When the cooling process of the hot press 10 further progresses to reach the reference temperature: X (point c in FIG. 4), whether or not the molded article 1 can be transferred to the cold press 20 (that is, the cold press 20). Has reached the reference temperature: X and is not in press operation), and if both conditions are satisfied, the hot press 10 is opened to open the molded product 1 on the press plate 11 ... The pressing plate 33 of the cold press 20 is pressed and slid by the pressing member 33A of the supply mechanism 30.
Reprinted above.

When the transfer of the molded products 1 to the cold press 20 is completed, a transfer completion signal from a detection means (not shown) from the hot press 10 is obtained, and the temperature change pattern of the program setter 16 on the hot press 10 side is obtained. The program is reset and the temperature is controlled from the program control system 60 to the constant temperature control system.
The temperature is switched to 70 and constant temperature control is performed, and the hot press 10 is maintained at the reference temperature: X to prepare for the next loading of the molded product 1. still,
If the article to be molded 1 cannot be transferred to the cold press 20 when the cooling process of the hot press 10 reaches the reference temperature: X, the article 1 to be molded from the hot press 10 to the cold press 20 can be performed. Is not carried out, the temperature control based on the program of the hot press program setter is continued to cool to room temperature (point d in FIG. 4), and the molding is completed by the hot press 10.

On the other hand, on the cold press 20 side on which the molded products 1 ... Are transferred, a transfer completion signal from the hot press 10 (point e in FIG. 4).
Thus, pressing is performed at a predetermined pressure, temperature control is started based on the temperature change program of the cold press program setter 26, and the temperature is cooled to room temperature according to the temperature change program (point f in FIG. 4), whereby the molding is completed. .

During the cooling process by this cold press 20, hot press
A new article 1 to be molded 1 is carried into the apparatus 10 by the supply mechanism 30 and the hot pressing step as described above is started, and this step is repeated thereafter.

The molded product 1 that has been molded by the cold press 20
Is transferred to the holding plate 41A of the receiving mechanism 41 by the claw member 42A of the carry-out mechanism 40, raised and lowered the receiving mechanism 41, and carried out by the delivery conveyor 43.

As described above, before the molded product 1 is carried in (in the case of continuous molding, after the molded product 1 is transferred to the cold press 20).
By maintaining the hot press 10 at the reference temperature of the temperature change pattern program of the program control system 60 by the constant temperature control system 70, temperature control based on the control temperature change pattern program by the program control system 60 is started immediately and with high accuracy. Therefore, it is possible to perform highly accurate temperature control according to the program.

Incidentally, the above embodiment is based on the program control system 60 and the constant temperature control system.
It is configured such that the switching of 70 is performed by switching the changeover switch 18 interposed between the program setting device 16 and the constant temperature setting device 17 and the temperature controller 15, but it is not limited to this. The program setter 16 and the constant temperature setter 17 are each provided with a dedicated temperature controller, the program control system and the constant temperature control system are independently configured, and the control systems can be switched as appropriate. It is something.

[Effect of the Invention] As described above, according to the present invention, the constant temperature control means controls the constant temperature of the hot press apparatus before carrying in the molded product to the reference temperature, so that the program temperature can be changed based on the reference temperature. The temperature change program by the control means can be started with high accuracy, and highly accurate temperature control can be performed.

[Brief description of drawings]

FIG. 1 is a functional block diagram of the present invention, FIG. 2 is a schematic configuration diagram of a tandem press device to which an embodiment of the present invention is applied, FIG. 3 is a block diagram of its temperature control system, and FIG. It is a graph which shows the temperature change pattern based. 1 ... Article to be molded 10 ... Hot press (hot press device) 20 ... Cold press (cold press device) 60 ... Program control system (program temperature control means) 70 ... Constant temperature control system (constant temperature control means) )

Claims (1)

[Claims] 1. A hot press device equipped with a program temperature control means for performing temperature control based on a preset program, and a cold press device capable of temperature control are provided side by side, and the hot press device heats based on the program. In a tandem press device configured to perform pressure press molding and transfer the molded product to the cold press device at a predetermined temperature during the cooling step and cool while pressing with the cold press device, Constant temperature control means for maintaining and controlling the hot press device at a predetermined temperature, and switching means for switching the control mode of the hot press device between the control mode of the constant temperature control means and the control mode of the program temperature control means. The switching means is configured to control the constant temperature after the molded product is loaded into the hot press device. Temperature control apparatus of a tandem pressing apparatus, characterized in that switching from the control mode in the stage control mode by the program temperature control means.