KR920003735B1 - Apparatus and method controlling temperature of hot-press plate in hot press - Google Patents

Abstract

The apparatus forms 2 lines within the heated pressure plate for separately supplying hot medium and coolant, and automatically controls the surface temparture of the pressure plate by adjusting the supply of the heat medium and the coolant. The apparatus comprises a tube (11) for supplying the heat medium to the pressure plate (10); a tube (11') for supplying the coolant to the pressure plate; heated units (7,8,8') within the pressure plate (10); pipe lines (L1,L2,L3) having heat medium inlet (11a)/outlet (11b), coolant inlet (11'a)/outlet (11'b) and flow control valves (SV1,SV2,SV3); microprocessor (MP) comparing the temparatures of the heated units (7,8,8) with those of the flow control valves (SV1,SV2,SV3).

Description

Method and apparatus for controlling temperature of hot press plate in hot press

1 is a front view showing the overall appearance of a hot press to which the present invention is applied.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a rear view of FIG.

4 is a plan view showing a thermocompression plate installed in the hot press of FIG.

5 is a schematic diagram showing the operation of the hot press of FIG.

6 is a system diagram for explaining a temperature control method of a thermocompression plate.

* Explanation of symbols for main parts of the drawings

1: lower bed 4, 4 ': vertical frame

5: fixed side stand 7, 8, 8 ': thermocompression plate unit

10: heat press plate 11: fruit supply pipe

11 ': refrigerant supply pipe 11a: fruit supply port

11'a: refrigerant supply port 11b: fruit outlet

11'b: refrigerant outlet 13: heat tank

14, 16, 19: pump 15: boiler

17: fruit header 18: fruit drain header

20: cooling tower 22: condenser

24: coolant header 25: coolant drain header

L1, L2, L3: Line SV1, SV2, SV3: Flow control valve

TS: Temperature Sensor

The present invention relates to a method and a device for controlling the temperature of a heat-sealed plate in a hot press. Particularly, in a multi-stage hot press, the structure of the heat-compressed plate is arranged so that two lines are arranged at the same time. The present invention relates to a method and an apparatus for controlling the surface temperature by supplying and controlling the temperature automatically.

In the related art, the hot press thermocompression plate simply adopts a single-line pipe inside and alternately supplies cold and fruit to adjust the surface temperature of the thermocompression plate, and the operation control method is also almost manual. As such, hot presses have the following problems.

First, since cold and fruit are supplied in a single line, cold and fruit should always use the same kind of material and are limited in the range of cold and fruit used.

Second, cold and fruit must be supplied to a single line, so if the temperature of the thermocompression plate needs to be changed largely instantaneously, the supply of inner medium is stopped and the fruit is supplied inside the same supply line, or conversely, the supply of fruit is stopped and the refrigerant Since must be supplied to the line has a disadvantage in greatly reducing the life of the thermocompression plate due to the heat shrink and expansion of the line due to the generation of thermal stress due to a sudden temperature change.

Third, since the temperature control of the thermocompression plate is made close to manual by alternately supplying the coolant to a single line, it takes a lot of time to adjust the temperature required by the user, and thus, workability and productivity are lowered.

Fourth, the conventional hot press is used to supply cold and fruit to a single line, so when applied to multi-stage, the device is complicated and difficult to obtain due to operational difficulties, and it is difficult to obtain proper efficiency. There is this.

The present invention has been researched and developed in order to solve the problems of the conventional hot press, and provide two lines of cold and fruit supply and discharge lines installed so as to operate independently of each other inside the thermocompression plate, In order to achieve the following objectives, we provide a device that automatically controls the supply and discharge of fruit.

The first object of the present invention is to provide a temperature control method and apparatus that is configured to perform cold and fruit supply independently, so that even if the physical properties of cold and fruit are different, it is possible to use and select an efficient one. .

A second object of the present invention is to provide a temperature control method and apparatus that can be quickly controlled by the supply of cold, fruit when the temperature of the thermocompression plate to change to another temperature.

It is a third object of the present invention to provide a temperature control method and apparatus for improving the quality of a product obtained after processing by maintaining a constant temperature suitable for the workpiece to be press bonded and processed to maintain the surface temperature of the thermocompression bonding plate. .

The fourth object of the present invention is that even when the temperature of the pressing plate must be changed largely instantaneously, since a unique cold and fruit supply line is formed, a sudden temperature change does not occur in the line, so that the thermal contraction and thermal expansion of the line are not severe. It is to provide a temperature control method and apparatus that can greatly extend the life of the thermocompression plate and give a great economic benefit.

The fifth object of the present invention is to adopt a unique cold, fruit supply line can be applied to a multi-stage, and in this case is not structurally complicated and the temperature control method that can improve the workability and productivity because the efficiency can be obtained more than appropriate and To provide a device.

The sixth object of the present invention is to achieve a greater cooling effect when cold and fruit are alternately supplied to one line and pass through the cooling water to the other line, and conversely, a larger temperature rise effect is achieved when the fruit is passed through both lines. To provide a temperature control method and apparatus to obtain.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. The hot press to which the present invention is applied is provided with the base 3 provided with hydraulic cylinders 2, 2 ', 2 "for operating the lower bed 1 up and down as shown in FIGS. Vertical frames (4, 4 ') are respectively installed on both sides, and the fixed frame (5) is fixedly installed on the inner upper portion of the vertical frame (4, 4') and the upper end of the fixed frame (5). A hydraulic device 6. The thermocompression plate units 8 and 8 'are installed on the lower side of the fixed rail stand 5 and the upper portion of the lower bed 1 and the thermocompression plate units 8 and 8', respectively. A plurality of thermocompression plate units 7 are respectively installed therebetween, each of which protrudes the fixed end portions 7a on both the left and right sides thereof, and each of the fixed end portions 7a of the thermocompression plate unit 7 is reverse stepped. It is no longer lowered on the inside of the staircases 9 and 9 'which are fixed to the vertical frames 4 and 4' installed on both sides by forming a step. Each thermocompression plate unit (7, 8, 8 ') is closed on six sides and hollowed out, as shown in FIGS. 2 and 4, respectively. Inside the hexagonal pressing plate 10, the fruit supply pipe 11 and the refrigerant supply pipe 11 'are arranged to be fixed at a predetermined interval in a double arrangement, and the fruit supply port 11a and the refrigerant supply port 11'a are fixed. It is formed at both ends, and the fruit discharge port (11b) and the refrigerant discharge port (11 'b) is located at the center of one side, and at the same time hot press processing between each of the thermal compression plate unit (7, 8, 8') The material 12 to be performed can be positioned so that its number and size can be changed in design.

Figure 5 shows a schematic diagram according to the supply and discharge of cold, fruit to perform the temperature control function in the thermocompression plate of the present invention. That is, the fruit supplied to the thermocompression plate unit 7, 8, 8 ′ is heated while passing through the boiler 15 from the fruit tank 13 via the pump 14, and again through the pump 16. Supplied to the header 17 and branched therethrough, through each of the thermocompression plate units 7, 8, 8 ′ to the heat drain 18 and pump 19 to the diesel boiler 15 or heat tank 13. Line L1 is provided to achieve a return cycle. In addition, the cooling water as the refrigerant supplied to the thermocompression plate units 7, 8, and 8 'is connected to the cooling tower 20, the compression pump 21, the condenser 22 and the expansion valve 223 in the conventional refrigeration circuit, Cooled through the cooling tower 20 and branched through the coolant header 24 and supplied to the thermocompression plate units 7, 8, 8 ′ and the temperature via the thermocompression plate units 7, 8, 8 ′. The elevated coolant is collected in the coolant drain hair 25 and installs a line L2 to form a circulation in which the coolant is cooled while passing through the cooling tower 20 again.

In addition, a bypass line (L3) which allows cooling water to be supplied as a refrigerant instead of a fruit for supplying the thermocompression plate units (7, 8, 8 ') is condenser 22 between the line (L2) and the heat head (17). ) Is installed in a loop. At this time, the lines (L1, L2, L3) on each of the electronically driven flow control valves (SV1, SV2, SV3) are installed, respectively, so that it is possible to control the flow rate of cold, fruit and open, closed. The line or thermocompression plate unit (7, 8, 8 ') located between the thermocompression plate unit (7, 8, 8') and the heat drain header (18) and the coolant drain header (25) has a conventional temperature sensor ( TS) can be installed to sense the temperature of the thermocompression plate units 7, 8, 8 ′. Figure 6 shows a system diagram for explaining the temperature control method of the thermal compression plate of the present invention. That is, the controller L inputs a temperature value from the temperature sensor TS to the microprocessor MP, and displays the temperature state of the thermocompression plate units 7, 8, and 8 ′ on the display D and the operator ( OR) shows the data value inputted by the microprocessor (MP) and the operation status of the flow control valves SV1, SV2, SV3 that receive the command signal from the microprocessor (MP), and the microprocessor (MP) senses the temperature. Comparing with the temperature sensed by the sensor TS and the data input by the operator OR, selecting one of the flow control valves SV1, SV2, and SV3 to send a command signal so that the operation can be performed. It is.

Next, the operation and effects by the technical configuration of the present invention described above will be described.

First, referring to the operation sequence, the hydraulic cylinders 2, 2 ', 2 "are operated by lowering each of the thermocompression plate units 7 as shown in FIG. 9 ') at regular intervals and the bed (1) is also lowered with the thermocompression plate unit (8') to perform thermocompression between each thermocompression plate unit (8, 7, 8 '). The material 12 (e.g. PVC laminate, melamine, etc.) and place it in position, then raise the thermocompression unit (8, 7, 8 ') and place it on the microprocessor (MP) by the operator (OR). When the predetermined temperature required for the thermocompression of the material 12 is inputted, the input data appears on the display D. In this case, the temperature of the thermocompression plate units 7, 8, and 8 'is generally used for the first time. Of the flow control valves SV1, SV2, SV3 in the microprocessor MP is lower than the data input by the operator OR. Only the quantity control valve SV1 is opened and the rest is closed, the operation is carried out in the state of high temperature via the boiler 15, and the heat control valve SV1 heat header 17, each thermocompression plate unit 7, 8, 8 ') through the supply pipe 11 through the fruit supply port 11a, through the respective fruit outlet 11b via the drain header 18, the pump 19, the boiler 15 or the fruit tank 13 Circulation through the line L1 returned to is continuously performed to increase the temperature of the thermocompression plate unit 7, 8, 8 ′.

When the temperature of the thermocompression plate unit 7, 8, 8 ′ coincides with the data input by the operator OR by the continuous operation as described above, the flow control valve SV1 is the microprocessor MP. Is automatically closed by the command signal and the circulation of the fruit via the line L1 is stopped, and the heat absorption of the outside air and the material 12 itself in the state of the thermocompression plate unit 8, 7, 8 'is constant. When the temperature is lowered under the influence of the above, the heating and pressing of the material is performed while maintaining a constant temperature consistent with the input data by repeating the above-described operation sequence.

After the predetermined time has elapsed, when the thermocompression processing of the material 12 is completed, the temperature of the thermocompression plate units 8, 7, and 8 'is cooled. At this time, the data input value by the operator OR is cooled again. Correction and input is made in accordance with the temperature of the thermocompression plate unit 8, 7, 8 'to be used. In this case, the flow control valve SV1 is closed and the flow control valve SV2 is commanded by the command signal of the microprocessor MP. As the coolant is opened, the coolant as the coolant branches through the coolant header 24 and is supplied to the thermocompression plate units 7, 8, and 8 ′, and the coolant is passed through the coolant supply pipe 11 ′ through the coolant supply port 11 ′ a. Through the outlet 11'b, circulation is performed by the line L2 passing through the cooling water drain header 25, the cooling tower 20, the pump 21, and the flow rate control valve SV2, and the cooling is continued. In addition, instead of heat supplying the thermocompression plate unit (7, 8, 8 ') by opening the flow regulating valve (SV3), cooling water as a refrigerant is transferred to the heat header (17) thermocompression plate unit (7, 8, 8') and drain. The cooling circulation line passing through the bypass line (L3) leading to the header (18), pump (19), condenser (22) and the flow control valve (SV3) is formed simultaneously of the thermocompression plate unit (7, 8, 8 '). Metal cooling can be achieved.

Through this process, when the temperature of the thermocompression plate unit (7, 8, 8 ') reaches the standard cooling temperature of the input data, the flow control valves (SV2, SV3) are automatically closed and the circulation of the coolant as described above When the temperature rises again due to the preheating temperature or other factors remaining in the material 12, the cooling operation may be performed as described above, and the thermocompression plate unit 7, 8, 8 may be operated by such cooling operation. ') Maintains a temperature corresponding to the predetermined cooling data.

Again, the thermocompression plate unit 7 and the bed 1 are lowered by the hydraulic cylinders 2, 2 '2 ", the thermocompression-processed material 12 is removed, and the new material 12 to be processed again is removed. It is placed between the thermocompression plate units 8, 7, 8 'and then repeatedly performed according to the above-described operating sequence.

Medium such as oil or steam as the fruit used in the above-described operation process may be used, and cooling water or coolant oil may be used as the refrigerant, and the operation sequence may be changed in order as necessary. .

As described above, the present invention provides a method and apparatus for controlling the temperature of the thermocompression plate to provide a supply discharge line having two lines inside the thermocompression plate unit (7, 8, 8 ') so as to independently perform the supply of cold and fruit. It is possible to select and use it even if the physical properties of cold and fruit are different, and the temperature control can be made quickly, and it is possible to process while maintaining the proper and constant temperature for the processed material. It can improve the quality of the obtained product and at the same time prevent the sudden temperature change in the line during operation, minimize the heat shrinkage and expansion phenomenon, and greatly extend the life, while the multi-stage thermocompression plate unit (7, 8, 8 ') can be configured to improve productivity with more than proper working efficiency and to properly supply and discharge cold and fruit. It has excellent effects, such as being able to quickly adjust the temperature of the thermal compression plate (7, 8, 8 ').

Claims (2)

Vertical frames 4 and 4 'are installed at both sides of the base 3 on which the hydraulic cylinders 2, 2', and 2 "are installed to operate the lower bed 1 up and down, and the vertical frame 4 In the hot press in which the fixed rail stand 5 is installed in the upper portion of the inner side of the 4 '), the thermocompression plate units 8 and 8' are placed on the lower portion of the fixed rail stand 5 and the upper portion of the lower bed 1. And a plurality of thermocompression plate units 7 are installed between the thermocompression plate units 8 and 8 ', respectively, and protruding fixed ends 7a at both left and right ends thereof so that the vertical frame 4, 4 ') is installed inside the fixing stand 9, 9' fixed to both sides, and the thermocompression plate units 7, 8, 8 'are provided with a heat supply pipe 11 inside the pressing plate 10. The refrigerant supply pipes 11 'are arranged in a double arrangement so that the thermocompression plate units 7, 8, and 8 are sequentially supplied from the heat tank 13 via the pump 14, the boiler 15, and the heat header 17. Through the fruit supply port 11a of Line L1 through which fruit is circulated to the fruit outlet 11b of the fruit supply pipe 11, the fruit drain header 18, the pump 19, the boiler 15, or the fruit tank 13, and the cooling tower 20. Cooling water drain 11'b of the refrigerant supply pipe 11 through the refrigerant supply port 11'a of each of the thermocompression plate units 7, 8, and 8 ' A line L2 through which the refrigerant is circulated back to the cooling tower 20 via the header 25, and a bypass line L3 which continues through the condenser 22 between the line L2 and the heat header 17. The temperature control device of the thermocompression plate in the hot press, characterized in that consisting of installing the flow control valves (SV1, SV2, SV3) in each of the lines (L1, L2, L3). The heat supply plate 11 having the fruit supply outlets 11a and 11b and the refrigerant supply outlets 11'a and 11'b inside the pressing plate 10 of the thermocompression plate unit 7, 8, 8 ′. The refrigerant supply pipe 11 'is installed in a double array, and the heat supply and discharge ports 11a and 11b and the refrigerant supply and discharge ports 11'a and 11'b are provided with flow control valves SV1, SV2, and SV3. Speech to each line (L1, L2, L3), one of the flow control valves (SV1, SV2, SV3) is the temperature value input by the normal temperature sensor (TS) and the thermocompression on the display (D) The microprocessor (MP) which compares the temperature state of the plate units (7, 8, 8 ') and the data value input by the operator (OR) can be controlled by the command signal selected and sent. The temperature control method of the thermocompression plate.

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