TW544397B - Press device and control method of press device - Google Patents

Abstract

The present invention provides a press device comprising a heat plate provided between a pair of approachable and detachable planar plates. A heater provided on a heat plate and a heat medium oil which circulates in a heat medium oil circulating circuit formed in the heat plate are used to heat the heat plate, such that there is not need to increase the pressure resistant capability even if the workpiece is formed by a resin having an extremely high forming temperature. The present invention is realized by using a silicone heat medium oil as the heat medium oil which circulates in a heat medium oil circulating circuit.

Description

544397 V. Description of the Invention 技术 [Technical Field] The present invention relates to a pressing device capable of forming a resin-made workpiece. [Background Art] Conventionally, in order to manufacture, for example, an IC card (Integrated Circuit Card) made of plastic, a printed circuit board (PCB), or the like, a press device for forming a plastic workpiece is used. This pressing device has a hot-pressing procedure for pressing a workpiece while heating it by a hot plate. Among the aforementioned pressing apparatuses, there is a pressing apparatus including a pair of upper and lower flat plates on which a heat plate is mounted by a heat insulator, respectively. In this pressing device, heating of the hot plates is performed by heaters mounted on the respective hot plates, and the control thereof is controlled by a controllable Shi Xi (t h y r i s tor) unit and a controller. In addition, in the press apparatus disclosed in the Japanese Patent Publication No. 6-2 7 3 6 4, a heating flow path is formed between the heater and the hot plate, and the hot plate is heated indirectly by a heat medium oil. The heat medium oil contains The heating medium circulates in the heating medium circulation circuit. [Problems to be Solved by the Invention] In recent years, various resins with a molding temperature of 400 ° C have been developed. These trees are intended to be used as heat-resistant structural materials. As the press device of the aforementioned publication uses a press device that indirectly heats a hot plate with a heat medium oil to form the resin, the heat medium oil is heated to the molding temperature, which is 400 ° C. However, the commonly used organic heat medium oil is When heated to 400 ° C, its vapor pressure is extremely high, reaching more than 1 MPa. Therefore, it is necessary to sufficiently ensure the pressure resistance performance of the piping, resulting in an increase in the size of the device. The pressing device described in the above publication is contained in a hot plate.

Page 4 544397 V. Description of the invention (2) High voltage distribution of Tibetan electric heaters [Objective of the invention] The main use of the present invention is to shape the pipes without raising the pipes. The medium oil has a low degree, and therefore, it is not good when processing the product. The pressure of the vapor pressure of the pressing device is adjusted so that the pressure oil is cavitation. The broken heat medium deteriorates, so the oil deteriorates. In addition, the inert tube is built up with heat, so it must be installed on a hot plate with high heat and up and down movement. Therefore, it is necessary to safely configure the wiring mechanism. The main purpose is to provide a pressing device which is capable of withstanding pressure when a workpiece made of a resin having a high molding temperature is used. Means] As described above, the pressing device of the present invention is used as a heat medium and a heat medium oil. Compared with the organic heat medium oil, the Shixi system has a temperature of 400 ° C and a vapor pressure of 1 to 1.5 kPa, even when it is formed by a resin quilt with a molding temperature of up to 400 ° C. It is necessary to improve the pressure resistance of its piping system. The main component of the heat medium oil is dimethyl polysiloxane. It is preferable to have a pressure adjustment mechanism that maintains the pressure of the heat medium oil within a predetermined range of the heat medium oil. By increasing the heat medium oil vapor pressure above, the heat medium oil does not vaporize, and no pump gas is generated in the pump circulating the quality oil. The adjustment mechanism is preferably pressurized by the inert gas to heat the medium oil at a high temperature. When in contact with an active gas such as oxygen, the heat medium oil is pressurized by an inert gas, and the inert gas that can prevent the heat medium is preferably nitrogen. The gas is preferably passed through an expansion tank connected to a distribution medium circulation circuit branched from the heat medium circulation circuit,

Page 5 544397 V. Invention (3) In the expansion tank, the inert gas in the expansion tank is most inert. When the pressure in the expansion tank before the expansion tank is injected, the pressure is higher than the second first pressure. 2kPa In addition, the gas that is not produced by the pressurized gas is preferably installed in the gas circuit from the heat medium circulation. The gas used to return to the gas recovery tank is opened. After returning from the gas, it is discharged when the gas is recovered. The valve is closed. The first 2kPa 〇 has a heating medium. The pressing device will be heated. When the aforementioned heat is applied, the temperature of the hot plate causes the hot plate to cool sharply. The heat medium oil is pressurized in the flange body of the tube. The pressure of the aforementioned pressurized gas is controlled at a predetermined normal gas control mechanism. The pressure of the inert inert gas is lower than that of the inert gas. When the aforementioned expansion pressure is released from the expansion tank, the aforementioned second pressure is 5 kPa. The device preferably has a valve for circulating the heat medium. Silicon-based heat medium oil is used to generate gas, so it is released in the gas circuit to prevent the pump from cavitation on the recovery tank. When the body pressure in the heat recovery medium circulation circuit of the gas recovery tank exceeds the third pressure, the gas is released in the recovery tank. The gas pressure of the gas tank is lower than the fourth pressure, and the third pressure is 4 kPa, and the aforementioned force adjustment mechanism will be enclosed. Pressure regulating gas control mechanism, when a pressure, the inert gas in the front box inert gas. The aforementioned loopback long-term body row. A gas thermal medium is added to the middle of the fourth path when the gas is discharged from the gas. The gas is discharged from the valve and after the heat generated by the pressure, the gas is discharged from the valve. When the discharge valve is opened, the gas is an oil cooling mechanism, and the heat medium oil cooling mechanism adjusts the heat when the pre-processed material is cooled after being hot-pressed and solidified. The medium oil plate is cooled at a cooling rate within a predetermined range. Hot pressing may be as high as 400 ° C. If it is in this state, temperature unevenness will occur in the hydraulic circuit, especially if the thermal gradient is increased, heat medium oil will be generated from the gasket.

544397 V. Inventor (4) The problem of leakage. In addition, the resin also generates thermal stress due to uneven temperature, and this thermal stress deforms the resin and reduces the dimensional accuracy of the molded product. Therefore, it is necessary to adjust the temperature of the heat medium oil so that the hot plate is cooled at a cooling rate in a predetermined range, thereby avoiding the problem of steam. The heat medium oil cooling mechanism is preferably provided with a bypass line, a cooler and a diaphragm valve. The bypass line branches from the heat medium oil circulation circuit and returns to the heat medium oil circulation circuit. The cooler is provided in the bypass pipe. In the middle of the road, the heat medium oil passing through the bypass pipe is cooled; the diaphragm valve is installed on the upstream side of the cooler of the bypass pipe, and the flow rate of the heat medium oil flowing to the cooler can be adjusted. A heating medium oil heating device for heating a heating medium oil disposed outside a hot plate. The heating medium oil heating device is inserted in a U-shaped pipe through which the heating medium oil passes and is coaxial with the U-shaped pipe. At least a part of the electric heater in the U-shaped tube. According to the pressing device of the present invention, since the hot plate is provided with an electric heater, it is not necessary to install high-voltage wiring on the hot plate that is hot and moves up and down, and it is not necessary to provide a mechanism for maintaining the wiring in a safe state. Therefore, the cost of the pressing device can be reduced. In addition, since there are fewer restrictions on the installation of the pressing device, a device corresponding to the purpose of the device user can be easily installed. [Comparison of symbols of main components] 1… pressing device 2… frame 3… fixed plate 4… movable plate

Page 7 544397 V. Description of the invention (5) 5 6 7 8 9 10 11 12 13 1 4A 1 5A 1 6 A 17 1 8A 2 1 A 2 2A 2 3A 2 4A 2 5A 2 6 2 7 2 8A 2 9 3 0 Hydraulic cylinder, hydraulic piping, hydraulic pressure source control unit, heat insulator, upper hot plate insulator, lower hot plate body 1 4 F · · · through · L 1 5 B · · · through 孑 L 1 6F ... Heater switching valve 1 8F… flange 2 1 D… bolt 2 2 F ···· Sijigeliang 23F ... support element 2 4F ... bottom hole 2 5G ... blocking element inlet and outlet 2 8 F ... heating flow path heat Medium circulation tube pump

Page 8 544397 V. Words of invention (6) 3 4… Temperature sensor 3 5… Controllable crush unit [Embodiment of the invention] The embodiment of the present invention will be described below with reference to the drawings. Fig. 1 shows the entire press apparatus 1 of the first embodiment. As shown in the figure, in the pressing device 1, a fixed plate 3 is fixed to an upper portion of the frame 2, and a movable plate 4 is provided below the fixed plate 3. This movable plate 4 is driven up and down by a hydraulic cylinder 5. The hydraulic cylinder 5 is connected to a hydraulic pressure source 7 such as a hydraulic pump through a hydraulic piping 6, and oil is supplied and discharged from a switching valve 17 provided in the middle of the hydraulic piping 6. The operation of the switching valve 1 7 port hydraulic pressure source 7 is controlled by the control unit 8. In Fig. 1, these control wirings and the like are omitted. In the pressing device 1 described above, an upper heat plate 10 is mounted on the lower surface of the fixed plate 3 via a heat insulator 9; and a lower heat plate 12 is mounted on the movable plate 4 via a heat insulator 1 1. Fig. 2 shows a cross section of the upper heat plate 10 on the fixed plate 3 side, the heat medium circulation circuit and the heater control circuit of the heat plate. Fig. 3 is a side view of the aforementioned hot plate. In this hot plate, although the pressing direction of the upper hot plate and the lower hot plate are different, the structures of the two are basically the same. In this hot plate, although the pressing direction of the upper hot plate 10 and the lower hot plate 12 are different, the structure of the two is practical except that the lower hot plate 12 does not have a temperature sensor described below. On the same. As shown in FIG. 2, in the rectangular parallelepiped-shaped hot plate body 13, six through holes 1 4 A to 1 4 F are formed in parallel at a predetermined interval on one side, and the two ends of the through holes 14A to 14F are formed respectively. 14A ~ 1 4F

Page 9 544397 V. Description of the invention ⑺ through through holes 15A, 15B. Therefore, the respective through-holes 14A to 14F communicate with each other through the through-holes 15A and 15B at both ends. Small-diameter electric heaters 16 A to 16 F smaller in diameter than the through-holes 1 4 A to 1 4 F are respectively inserted, and an annular section is formed by a gap between the inner wall of the through-hole and the outer peripheral portion of the heater. The heating flow path 2 8A ~ 28F, the heating medium oil L flows through. The cross-sectional areas of the inlet 26, the outlet 27, and the communication through-holes 15A and 15B are the same. The cross-sectional areas of the heating flow paths 28A to 28F are also approximately equal to the cross-sectional areas of the inlet 26, the outlet 27, and the communication through-holes 15A and 15B, but the day is smaller than the communication through-holes 15A and 15B. FIG. 4 and FIG. 5 show a configuration in which the aforementioned electric heater is mounted on a hot plate. In Figs. 4 and 5, the mounting structures of the electric heaters are substantially the same. Therefore, only the mounting structure of the electric heater 16C is shown. In the figure, a square flange portion 18C is provided at one end of the electric heater 16C, and the flange portion 18C is mounted on the hot plate body 1 with four bolts 2 1 A to 2 1 D. Thus, the electric heater 16 c is fixed to the hot plate body 13. When the flange portion 18 C is fixed, as shown in FIG. 4, the seal 塾 20 C is inserted into the annular groove 19 C formed on the mounting surface of the flange portion 18 C, and the gasket is clamped. Between the hot plate body 13 and the flange portion 18 C, oil leakage from the through hole 1 4 C is prevented. '' A cylindrical support element 2 3 A to 2 3 F is hermetically welded and fixed to the other ends of the through holes 14A to 14F of the hot plate body 13, and bottom holes 2 4A to 24F are formed in the cylindrical support elements 23A to 2 3F . The other ends of each of the electric heaters 16A to 16F are fitted in these bottom holes with a gap in the radial and axial directions.

Page 10 544397 V. Description of the invention (8) Within 24A ~ 24F. The cross-sectional area of the gap between the electric heater 16 A to 16 F and the bottom hole 2 4 A to 2 4 F is smaller than the cross-sectional area of the aforementioned heating flow path 2 8 A to 2 8 F. That is, the dimensions of the commonly used electric heaters 16A to 16F are 15 mm in outer diameter and 900 mm in length, or 17.5 mm in outer diameter and 900 to 1 300 mm in length. When the inner diameter of the bottom holes 24A to 24F is set to D and the outer diameter of the electric heaters 16A to 16F is set to d, during normal operation, the thermal expansion of the electric heater 6 A to 16 F is stable (at this time, the bottom hole Also thermal expansion), the radial difference (D-d) between the outer peripheral portion of the electric heaters 16A to 16F and the bottom holes 24A to 24F is set to 0.2 mm to 0.4 mm. In other words, the setting of the aforementioned clearance indicates that the magnitude of the aforementioned radial direction difference (D-d) is the inner diameter of the bottom AL24A ~ 24F when the electric heater is not operating at temperatures such as 16 A to 16 F. The value of the thermal expansion difference from the outer diameter of the electric heaters 16A to 16F in the radial direction is 0.2 mm to 0.4 mm. In the foregoing, in order to reduce the variation in the temperature of the hot plate by reducing the time during which the heat medium oil L passes through the hot plate, the flow rate of the heat medium in the heating flow path is set to 3 m / sec, for example. In order to make it easier to see in the figure, the size of the gap (in Figure 4, the solid state of the electric heater at 16 C during thermal expansion is shown, and the double-dot chain line represents the state of Xu Zhiyuan's time). In addition to the clearance in the radial direction, between the bottom of the bottom holes 24A to 24F and the front ends of the other ends of the electric heaters 16 A to 16 F, the thermal expansion state 'even during normal operation' often produces a radius larger than the aforementioned radius. Axial clearance with large directional clearance. As described above, the electric heaters 16A to 16F are inserted into the through holes 14A to 14F,

Page 11 544397 V. Description of the invention (9) A heating flow path 2 8A ~ 2 8F is formed on the hot plate body 1 3, and the two ends of the communication through hole 1 5 A located at one end side (lower side in Fig. 2) are In the shape of an opening, the opening at the right end portion in FIG. 2 is the inlet 26 of the heat medium oil L, and the opening at the left end portion is the outlet 27 of the heat medium oil L. At the connection portion connecting the communication through holes 15A and 15 β between adjacent through holes 14A to 14F, one end side (the lower side in FIG. 2) and the other end side (the upper side in FIG. 2), Cylindrical blocking elements 2 5 Α to 2 5 G were welded at every two through-holes, and the communication through-holes 15 A and 1 5B were blocked. As a result, the through-holes 1 4 A to 1 4 F are arranged in this order, and the adjacent through-holes 1 4 A ^ 1 4 F, that is, the heating flow paths 2 8 A to 2 8 F, are connected to the through-holes 1 at one end side. 5 A and the communication through-holes 1 5 B on the other end side are connected alternately. Therefore, the heat medium oil L supplied from the inlet 26 is from the heating flow path 2 8 A (from one end to the other end), the communication through-hole 1 5 B at the other end, and the adjacent heating flow path 2 8 B (From the other end to one end), a communication through hole 1 A at one end, an adjacent heating flow path 2 8 C (from the other end to one end), a communication through hole 1 5B at one end, a heating flow 28D (from one end to the other end), communication through-hole 1 5 A at the other end, adjacent heating flow path 2 8 E (from one end to the other end), communication through-hole 1 at the other end 5 B. Adjacent heating flow paths 2 8 F (from one end to the other end) are bent and travel in sequence, and finally discharged from the outlet 2 7.

22F ^ One end of each heater 1 6 A to 1 6 F protrudes outward from the flange portion 1 8 A to 1 8 F 'lead the wiring from one end of each heater 1 6 A to 1 6 F 2 2 A ~ Single 7G 3 5 is controlled by the control unit 8 as described later. The other on the upper hot plate 丨 〇 is connected to the controllable Shixi unit 35, so that power can be supplied. Controllable Shi Xi

Page 12 544397 V. Description of the invention (ίο) The centrality of one end, the temperature and temperature signal on the actual control sheet 1 3, and then, according to the quantity, as the power output signal of the controlled silicon, and the actual controlled silicon is added to the electricity. The electric power supply heater is described. In this way, 3, 5, electric heating system. The feedback etc. As shown in Fig. 1, the pump 30 passes the heat at the outlet 27. Therefore, the vapor pressure that can supply the main components of this embodiment is also higher than that provided with a temperature sensor 34, which is used to detect the temperature of the hot plate 10 and the temperature signal is output to the control unit 8. The element 8 is composed of, for example, a microcomputer, etc., and receives the measured temperature signal of the hot plate from the sensor 34 installed on the hot plate body, compares the measured target temperature of the measured hot plate temperature, and calculates the difference. This difference determines the power required by the electric heaters 16 A to 16 F. The required power output signal is output to the thyristor unit 35. The unit 35 has a thyristor 'that receives all signals from the control unit 8 and controls the output of the thyristor. In other words, the required power output is a power corresponding to the difference between the measured temperature and the target temperature, which is output from the heaters 16A to 16F. At this time, the thyristor unit 35 electrically connects the electric heater of the front to the upper hot plate 10 and the lower hot plate 12 to the temperature sensor 3 4, the control unit 8, and the thyristor unit 16 A ~ 1 6 F, for closed-loop feedback control of hot plate temperature, PID (proportional, integral, differential) control is used = 'The pump 26 is connected to the inlet 26 of the hot plate body 13 (the medium circulation pipe 29 is The electric motor 38 is driven), and is connected to the suction port of the pump 30 through a heat medium circulation pipe 29, such as to circulate the heat medium oil L.

For example, as the heat medium oil L, a dioxin-based polysiloxane is used as a rocky heat medium oil. Even if the heat medium oil is at 400, it is only 1 · 4 k P a. Therefore, the heating flow path is 2 8 A to 2 8 F.

Page 13 544397 V. Description of the invention (11) and the pressure resistance of the heat medium circulation tube 29 can be as low as several kPa. In addition, in order to prevent cavitation of the pump 30 caused by the vapor generated by the vaporization of the heat medium oil L, the heat medium oil L is pressurized to 2 kPa. The heat medium circulation pipe 29 is formed upstream of the suction port of the pump 30 to form a branch pipe 4 4 which faces the expansion tank 40. In order to prevent the high-temperature heating medium oil from reacting with active gases such as oxygen and deteriorating, the expansion tank 40 is filled with an inert gas, namely nitrogen ^ N. In addition, the expansion tank 40 includes a nitrogen supply pipe 40 a, and a high-pressure nitrogen gas is sucked in through the nitrogen supply pipe 40 a to pressurize the heat medium oil L. The internal pressure of the expansion tank 40 is monitored by a pressure sensor P G1. The nitrogen supply pipe 40a includes a suction valve 40b. When the internal pressure of the expansion tank 40 is 2 kPa or less, the suction valve 4 Ob is opened to suck nitrogen N into the expansion tank 40. In addition, the expansion tank 40 is provided with a nitrogen exhaust pipe 40c connecting the expansion tank 40 and a reserve tank 42 (described later). The nitrogen exhaust pipe 4 0 c has an exhaust valve 40 d. When the internal pressure of the expansion tank 40 is 5 kPa or more, the exhaust valve 4 0d is opened to exhaust nitrogen N to the reserve tank 42 to make the expansion tank The internal pressure of 40 decreases. In this way, the intake valve 40 b and the exhaust valve 40 d are controlled, the internal pressure of the expansion tank 40 is maintained within a predetermined range, and the pressure of the heat medium oil L is controlled to 2 kPa to 5 kPa. A gas recovery tank 39 is connected upstream of the suction port of the pump 30. As described above, since the heat medium oil L is pressurized by the nitrogen N to a pressure higher than the vapor pressure in the expansion tank 40, no gas is generated due to the vaporization of the heat medium oil L. However, the high heat state continues for a long time. At this time, a part of the heat medium oil L is thermally changed to generate a gas G. The gas recovery tank 39 is used to recover the gas G. In addition, Lu can adjust the volume expansion caused by the temperature expansion of the heat medium oil ′ L in the heat medium circulation circuit by means of the gas recovery tank 39.

Page 14 544397 V. Inventor's note (12) The lower end of the gas recovery tank 39 is provided with a heat medium suction pipe 43 connecting the gas recovery tank 39 and the reserve tank 4 2. The heat medium oil L is stored in the reserve oil tank 42. The heat medium oil L is supplied to the heat medium circulation pipe 29 and the heating flow path through the gas recovery tank 39 through a pump mechanism (not shown). During maintenance, the heat medium circulation pipe 29 and the heat medium oil L in the heating flow path are introduced into the reserve oil tank 4 2. A maintenance valve 4 3 a is installed in the middle of the heat medium suction pipe 4 3. The maintenance valve is opened only when the heat medium oil L is supplied from the reserve tank 42 or when the heat medium oil L is recovered from the reserve tank 4 2. 4 3 a. At the upper end of the gas recovery tank 39, a gas recovery pipe 41 connecting the gas recovery tank 39 and the spare oil tank 42 is arranged. The gas recovery pipe 41 is provided with an automatic valve 4 1 a for gas discharge that opens and closes according to the pressure of the gas recovery tank 39. That is, when the gas pressure exceeds 4 kPa, the gas discharge automatic valve 41a is automatically opened, and the gas G in the gas recovery tank 39 is discharged to the reserve tank 42. After the gas G is discharged, when the gas pressure reaches 2 kPa, the automatic valve 4 1 a for gas discharge is automatically closed. In this way, by discharging the gas G, the gas G can be prevented from entering the heat medium circulation pipe 29, and the oil pressure of the heat medium oil L can be maintained within a certain range. Further, a three-way mixing valve 31 is installed in the middle of the heat medium circulation pipe 29 connecting the outlet 27 of the hot plate main body and the gas recovery tank 39. The three-way mixing valve 3 1 branches the heat medium oil L discharged from the outlet 2 7 of the hot plate body into a flow to the branch pipe 32 and a flow to the gas recovery tank 39, and the flow ratio can be set to any value. The heat medium oil L sent to the branch pipe 3 2 passes through the oil cooler 3 3 in the branch pipe 32 and merges with the gas recovery tank 3 9 upstream of the heat medium circulation pipe 29. 3 3 a is the inlet of the heat medium oil L of the oil cooler 3 3, and 3 3 b is the heat

Page 15 544397 V. Description of the invention (13) The outlet of the medium oil L. 33c is the cooling water outlet, and 33d is the heating / heating control / cooling control of the cooling water into the hot plate 10 (cooling speed 1 ~ 5 ° c / recovery tee 33 ° system single speed minutes), the mixing valve 3 is switched 1. Send all the heat medium oil L to the gas tank 39. When forcibly cooling one hot plate 10, the control unit 8 sets the flow ratio of the mixing valve 31 and sends the entire heat medium oil L to the oil cooler. In addition, when cooling control is performed at a speed of 5 t / min or more, The control unit 8 sets the flow rate ratio of the three-way mixing valve 31 to a value capable of obtaining the required cooling. The heat medium circulation pipe 29 on the downstream side of the pump 30 is branched to form a cooling control pipe 4 5 to the oil inlet 3 3 a to the oil cooler 3 3. A cooling control valve 4 5 a is attached to the cooling control pipe 4 5. The cooling control valve 4 5 a is a diaphragm valve with adjustable opening degree, and can set the flow rate of the heat medium oil L flowing out of the heat medium oil L discharged from the pump 30 to the heat plate 10 and directly to the cooler 33. . The cooling control valve 4 5 a can send the micro-flow heat medium oil L that cannot be controlled by the three-way mixing valve 3 1 to the oil cooler 3 3. The control unit 8 controls the cooling control valve 4 5 a and sends a part of the heat medium oil L It is sent to the oil cooler 3 3 to gradually reduce the temperature of the heat medium and perform cooling control. These heat medium circulation circuits and control circuits are applicable to both the upper hot plate 10 and the lower hot plate 12, and can detect the temperature of the upper hot plate 10, but can also detect the temperature of the lower hot plate 12. Alternatively, a separate thermal cycle and control circuit may be provided to detect the temperature of each hot plate. The operation of the pressing device will be described below. After the pressing device 1 is started, the pump 30 starts to supply the heat medium oil L to the hot plates 10 and 12. At the same time, since the actual temperature detected by the temperature sensor 34 is lower than the target temperature, the control unit

Page 16 544397 V. Description of the invention (⑷ Fan 8 calculates that the difference between the measured temperature and the target temperature is large, and sends the required power output signal with the maximum required power to the thyristor unit 3 5. Result 'Thyristor Unit 3 5 —The electric heater is heated rapidly while supplying large electric power to the electric heater 16 a to 16 F '. By heating the electric heater 16 A to 16 F', the temperature of the heat medium oil [rises, With the heat from the heat medium oil L, the temperature of the hot plates 10 and 12 also rises. At this time, the 'switch valve 31 closes the branch pipe 32, and the heat medium from the outlet cup Λ of the hot plates 10 and 12 is heated. The oil L directly flows into the suction port of the pump 30 and is re-introduced ^. 1, 2 to circulate it, so that the heat medium oil L · promotes the temperature of the hot plate and the signal is heated by the electric power on the Tianli wheel. 〇 Hot plate protection control. When the actual temperature measurement unit 3 5 is set to the target temperature, the control unit 8 reduces the required electric power. The size is reduced to the range of stopping and the required power transmission is controlled. Shixi Unit 35. In this way, the controllable Shixi Unit 35 enables the supply of power to ~ 16F Reduce, but not excessively exceed the target temperature. Cut the second private. To control the hot plate 丨 〇, 丨 2 to maintain the target temperature. = Er Wu 8 According to the difference between the measured temperature and the target temperature, determine the 々 $ ΐ: 1 is the required power output signal input to the controllable Shi Xidan # ^ a it Wu According to the aforementioned required power output signal, supply the power maintained at the target temperature, or stop the power supply, and continue to reverse the 2 U ΔΔK ^ AW closed circuit In the feedback control, the power of the thyristor ΐ 1 force n0 ,,,, 1 / JA ~ 16F is adjusted to be the most appropriate, and the temperature of the hot plates 10 and 12 is suppressed from deviating from the target temperature.

544397

544397 V. Description of the invention (16) Temperature, if the hot plate is rapidly cooled, temperature unevenness will occur in the heat medium circulation circuit, especially when the thermal gradient of the flange portion of the piping is large, the heat medium oil L is easy to seal from The pads flow out. In addition, thermal stress is generated on the resin due to temperature unevenness. This thermal stress deforms the resin molded product and reduces the dimensional accuracy of the molded product. Therefore, the hot plates 10 and 12 should be gradually cooled at a cooling rate of 1 to 5 ° C / min. The control unit 8 outputs a required power output signal to the thyristor unit 35 so that the thyristor unit 35 does not supply power to the electric heaters 16 A to 16 F. In addition, the control unit 8 sets the opening degree of the cooling control valve 45a so that the cooling rate of the hot plates 10 and 12 is within a predetermined range, and the temperature of the heat medium oil L is reduced. After the temperature of the hot plate reaches 250 ° C, the three-way mixing valve 31 is used for cooling control at a speed of 5 ° C / min or more. Fig. 6 shows another embodiment of the hot plate, showing a situation in which the heating and pressure area of the hot plate is further increased, and the number of electric heaters is increased. In the embodiment of FIG. 2, each heating flow path is simply arranged one by one, which has a large flow resistance. In this embodiment, adjacent heating flow paths are arranged side by side, and these are arranged side by side. The heating flow path is arranged in a line. That is, in the figure, bottom holes 1 4 a and 1 4 j with closed ends are formed at both ends of the hot plate body 13, and eight through holes 1 4 b to 1 4 i are provided between them. Each of these bottom holes and through-holes 14b to 14i is provided with through-holes 15A and 15B which intersect at right angles to them and communicate with one end portion (lower side in FIG. 6) and the other end portion (upper side in FIG. 6). The communication through-hole 15A at the one end portion,

Page 19 544397 V. Description of the invention (17) Blocking elements 2 5 a and 2 5 i are provided at the openings at both ends, between the through holes 1 4 a to 1 4 b and between the through holes 1 4 e to 1 4 f The cylindrical blocking elements 2 5 c, 2 5 e, and 2 5 g are provided in the portions between the through holes 1 4 i to 1 4 j, and these are sealed and fixed by welding. Similarly, at the other end of the communication through-hole 15b, blocking elements 2 5 b and 2 5 h are provided at the openings at both ends of the communication through-hole 1 5 B, and penetrating between the through-holes 1 4 c to 1 4 d. Cylindrical occlusive elements 2 5 d and 2 5 f are provided between the holes 1 4 g to 14 h, and they are tightly welded and fixed. The openings at one end of the bottom holes 1 4 a and 1 4 j are open and serve as the inlet 26 and the outlet 27 respectively. An electric heater 1 6 A to 1 6 各 is inserted into each of the aforementioned eight through holes 1 4 b to 1 4 i. The gap between the inner wall of these through holes and the outer periphery of the electric heater constitutes a heating medium. Heat the flow path from 2 8 a to 2 8 h. The inlet 26, outlet 27, bottom holes 14a, 14j, and communication through-holes 15A, 15B have a cross-sectional area that is approximately twice that of the heating flow paths 28a to 28h. Electric heaters 16A ~ 16 Η are fixed to one side of the hot plate 13 with the flange part 18A ~ 18 固定 fixed at the end of one end, and the other end is inserted into the support Element 23 Α ~ 23 元件 Element 2: ^ ~ 23 1 ^ is hermetically welded in the bottom holes 24A ~ 24 贯通 of the through holes 141) ~ 141. There is a gap in the radial direction and axial direction between the other 1 Η HL24A ~ 24 Η of the electric heaters 16A ~ 16Η. These examples are shown in Fig. 4. When the embodiment shown in Fig. 4 is also in thermal expansion mode, there is a difference in radial direction of about 0.2_ ~ 0.4, and there is also a larger gap in the hanging. # Pole by direction

Page 20 544397 V. Description of the invention (18) Therefore, in the heat medium circulation circuit of the heat plate configured as described above, the heat medium oil 1 flowing in from the opening of the bottom 孑 L 1 4 a flows to the other end and enters the other end The connecting through-holes 1 5 B pass through two heating flow paths arranged side by side through the connecting through-holes 1 5 A at one end and then from the connecting through-holes 1 5 B at the other end to the bottom hole 1 4 j. , And then flow out from the outlet 2 7. That is, the heat medium oil 1 flowing from the inlet 26 and the large-diameter bottom hole i 4a is divided by the communication through-hole 1 5 B at the other end and flows to the other ends of the two heating flow paths 28a and 28b. On the one hand, it is heated by the electric heaters 16A and 16B, and on the other hand, it flows to one end of the heating flow paths 28a and 28b. After converging at the communication through-holes 15A at one end, it is divided again and flows into the two heating flow paths 2 8 c and 2 8 d are on the one hand electric heaters! 6 c and 1 6 D are heated, and the other side flows from one end of the heating flow paths 28c and 28d to the other end. Similarly, the heat medium oil L that has reached the other end is merged again after communicating through the through-holes 1 5 B and flows to the two heating flow paths 2 8 e and 2 8 f. It flows to one end and is heated on the other. It merges at the communication through holes 1 A at one end and then splits. It flows from one end of the two heating channels 2 8 g and 2 8 h to the other end and the other. On the one hand is heated. The heat medium oil L passes through the through-holes 15 β to the bottom hole 1 4 j at the other ends of the heating flow paths 28 g and 28 h, and is then discharged from the outlet 27 of the hot plate body 13. In the embodiment, the number of electric heaters is increased corresponding to the large area of the hot plate. However, since the heating flow path (the cross-sectional area of the heating flow path is only a communication through hole) 5 A , 丨 5 b, about 2 times of the inlet 2 6 and outlet 2 7) Two and two are arranged side by side so that the media oil L flows through the communication through holes 14A and 15B. Flow path

Page 21 544397 V. Description of the invention (19) Compared with drawing one by one in line, the resistance of the flow path can be reduced. In addition, since the total cross-sectional area of the Likou heat flow path which is placed side by side is set to be approximately equal to the cross-sectional area of the inlet and outlet, etc., when the hot plate is heated, the flow velocity in the hot plate is constant. The surface heat transfer is also constant, and the hot plate can be maintained with a more stable temperature distribution. Moreover, since the cross-sectional area of one heating flow path is set to approximately one-half of the inlet 26, the outlet 27, the bottom holes 14a, 14j, and the communication through holes 15A, 15B, the The flow rate of the heat medium oil L is smaller than that when the cross-sectional area of the heating flow path is equal to the inlet 2 6 and the outlet 27, and a small amount of the heat medium in the hot plate can be used, which can reduce the running cost during heating. In the embodiment, the temperature sensor 34 is provided on the upper φ side hot plate 10, but it may also be provided on the lower side hot plate 12. In addition, the temperature sensor may be provided on both the upper and lower hot plates. , Independently control the power α heaters of the upper and lower hot plates. At this time, although the cost is higher than when a temperature sensor is installed, the different states of the hot plates can be controlled with high accuracy. The device has a structure in which an electric heater is embedded in a heating flow path formed in a hot plate. However, the present invention is not limited to the structure of the above embodiment, and it may be configured to dispose a device for heating a heat medium oil in Composition of the outside of the hot plate. According to the invention The second embodiment describes a pressing device of such a configuration. According to the pressing device of the second embodiment of the present invention, since no electric heater is hidden in the hot plate, it is not necessary to install a high voltage on the hot plate that operates at high temperature and moves up and down. It is not necessary to set the wiring to a safe state mechanism. Therefore, the cost of the pressing device can be reduced. Also, because the 'pressing device is installed, it has fewer restrictions, so it can be easily installed and can meet the user's needs.

Page 22 544397 V. Device for describing the purpose of (20). Fig. 7 is a view of the entire press apparatus 100 according to the second embodiment of the present invention. In addition, the various devices and components used in this embodiment described below are denoted by the same symbols when they are the same as those in the first embodiment of the present invention. In the figure, the pressing device 100 is fixed on the upper part of the frame 2 to fix the flat plate 3, and at the same time, a movable flat plate 4 is set on the lower side of the fixed flat plate 3. This movable plate 4 is formed in a state where it can be moved up and down by the hydraulic cylinder 5. The hydraulic cylinder 5 is connected to a hydraulic pressure source 7 such as a hydraulic pump via a hydraulic piping 6 and supplies and discharges oil by switching 1 7 provided in the middle of the hydraulic piping 6. The switching valve 17 and the oil pressure source 7 are controlled by the control unit 8. It should be noted that in FIG. 7, the wiring and the like for the control described above are omitted. On the above pressing device 1000, the upper side hot plate 1 0 1 0 is installed on the lower surface of the fixed plate 3 via a heat insulator 9, and the upper surface of the movable plate 4 is installed on the lower surface via a heat insulator 11 1. Side hot plate 1 0 1 2. Fig. 8 is a diagram showing the cross section of the hot plate 1 0 10 on the upper side of the fixed plate 3, the heat medium circulation circuit of the hot plate, and the control circuit of the heater. In addition, although the pressing direction of the upper hot plate 1 0 1 0 and the lower hot plate 1 0 1 2 is different from this hot plate, except that the lower hot plate 1 0 1 2 does not have a temperature sensor described later. Outside the point, the two have essentially the same configuration. As shown in FIG. 8, six through holes L 1014A to 1014F parallel to one side are formed on the cuboid shaped hot plate body 1 0 1 3 at a certain interval, and two through holes 1014A to 1014F are formed. Communication through-holes are formed at the end positions perpendicular to the through-holes 1014A to 1014F

Page 23 544397 V. Description of the invention (21) 1015A and 1015B ′ Therefore, each of the through holes IOi4A to 1014F is connected at both ends through the through holes 1015A and 1015B.

Here, the cross-sectional areas of the communication through-holes 1015a, 1015B and the through-holes 1014A to 1014F are the same. Furthermore, liquid-tight cylindrical support elements 1023 to 1023? And 1 1 2 3A to the through-holes 104A to 1014F of the hot plate body 1013 are welded and fixed on both end sides. 11 23F 〇 In the above structure, the flow rate of the heat medium in the heating flow path is set so that the time for the heat medium oil L · to pass through the hot plate is short, and the unevenness of the temperature of the hot plate can be suppressed. , For example, set to about 3 m / sec. The communication through hole located at one end (the lower side in FIG. 8) 〇 〇 1 5 Both ends are provided as openings. In FIG. 8, the opening at the right end is the inlet of the heat medium oil 1 〇 2 6 And the opening at the left end becomes the heat medium oil [mouth 1 0 2 7 〇 and the connection through holes 1015A, 1015B connecting adjacent through holes 1015A, 1015B connection part to One end portion (lower side in FIG. 8) and the other end portion (upper side in FIG. 8) are welded and closed with a cylindrical blocking element 10 2 5 G in a spaced manner. As a result, the through-holes 1 0 1 4 A to 101 4 F are arranged in a straight line in this order, and the adjacent through-holes 1, 0, 14 to 10, 14 are connected through-holes 1 at one end. 〇15 people are interactively connected to the other end through-hole 1015B. Therefore, the heat medium oil supplied from the inlet 10 2 6 [is based on the through-hole 1 104 A (from one end side to the other end side), the communication through-hole 1015B on the other end side, and the adjacent through-hole 1014B (from The other side faces one side), a ^

544397 V. Invention 1 (22) side communication through hole 1 〇5 5 A, adjacent through hole 1 〇1 4 C (from one end side to the other end side), the other end side communication through hole 丨 〇丨 5 B. Adjacent through holes 1 〇1 4 D (from the other end side to one end side), one-way side through-holes 1 〇1 5 A, through holes 1 〇1 4E (from one end side to the other end side) ), The other end side = through hole 101SB, adjacent through hole lmF (from one end side to the other port 17 is discharged in a row. 'Through the heating flow path inside the Zengqu detour, and finally come out ... two ,: A temperature sensing control is installed at the center of the other end of the upper hot plate 10 ::;: The temperature of the hot plate can be measured as shown in Figure VII, and is inserted into the medium circulation tube of the hot plate body 1013. The connection of the order driven by the electric motor 38 is connected to the heat and the outlet of the heat medium circulation pipe 29 ^ is connected to the outlet 1027, and the suction port is used to circulate the heat medium oil L to the end. G connection To the pump 30. In this embodiment, as the heat medium, the silicon-based heat medium oil whose main component is polysilicon oxygen fired. ☆ When the basic pressure is 400 ° C, its vapor pressure is L4kPa, which is very low, and the quality of oil can be lower even in mild heat medium circulation tube 29, so the heating flow path is 'In order to prevent the heat medium oil L from being gasified, it is caused by-★ several degrees. The pump cavitation phenomenon, the heat medium oil L is pressurized f gas to cause the pump 3 〇 produced in the heat medium circulation pipe 29 pump 30 " 口 kPa. Branch pipe 4 4 towards the expansion tank 4 〇 In order to prevent the formation of reactive gas in the upstream system at high temperature, the heat medium oil f ^ is filled, and the medium oil and the oxygen expansion tank 40 are filled. Nitrogen is an inert gas. The deterioration phenomenon, the aforementioned 'Expansion Tank 4o Series

544397 V. Description of the Invention (23)

It has a nitrogen supply pipe 40a, and the action of taking in high-pressure nitrogen through the nitrogen supply pipe 40a can pressurize the heat medium oil. The internal pressure of the expansion tank 40 is monitored by a pressure sensor PG1. The aforementioned nitrogen supply pipe 40a is provided with an intake valve 40b, and by opening this intake valve 4b, the nitrogen N is taken into the expansion tank 40 and the internal pressure of the expansion tank 40 is 2 k P a or less. In addition, the expansion tank 40 is provided with a nitrogen gas connecting the expansion tank 40 and the servo tank 42 (to be described later) so as not to exit the tube 40 c. The nitrogen exhaust pipe 40c has an exhaust valve 40d. When the internal pressure of the expansion tank 40 exceeds 5 kPa or more, the exhaust valve 40d is opened to exhaust nitrogen N to the servo tank 4. 2 to reduce the internal pressure of the expansion tank 40. In this way, when controlling the intake valve 4 0 b and the exhaust valve 4 0 d to maintain the internal pressure of the expansion tank 40 within a certain range, the pressure of the heat medium oil L can be controlled to 2 k P a ~ 5 k P a. A gas recovery tank 39 is connected upstream of the suction port of the pump 30. As mentioned above, the heat medium oil L is pressurized with nitrogen N to a pressure higher than the vapor pressure in the expansion tank 30. Therefore, although the gas generated by the gasification of the heat medium oil L is not generated, when the heat medium oil L continues to be in a high heat state for a long time, the heat A part of the medium oil L undergoes a thermal change to generate a gas G. The gas recovery tank 39 recovers this gas G. In addition, the gas recovery tank 39 can adjust the volume change caused by the temperature expansion of the heat medium oil L in the heat medium circulation circuit.

A heat medium intake pipe 43 is provided below the gas recovery tank 39 to connect the gas recovery tank 39 to the storage tank 42. In the servo tank 42, a heat medium oil L is stored. The heat medium oil L is supplied to the heat medium circulation pipe 29 and the heating flow path through a gas recovery tank 39 through a pump device (not shown), and is pressed. During the maintenance of the device, the heat medium circulation pipe 29 and the heat medium in the heating flow path are used.

Page 26 544397 V. Description of the invention (24) The quality oil L is drawn to the servo tank 4 2. In addition, a maintenance valve 43a is installed in the middle of the heat medium intake pipe 4 3, and the maintenance valve is only used when the heat medium oil L is supplied from the servo tank 42 or the heat medium oil L is recovered to the servo tank 42. 4 3 a Opener. Further, a gas recovery pipe 41 is provided at the upper end of the gas recovery tank 39 to connect the gas recovery tank 39 to the storage tank 4 2. The gas recovery pipe 41 is provided with an automatic valve 4 1 a for gas discharge which is opened and closed according to the gas pressure of the gas recovery tank 39. That is, when the gas pressure exceeds 4 kP a, the automatic valve 4 1 a for gas discharge is automatically opened to discharge the gas G in the gas recovery tank 39 to the servo tank 42. When the gas G is discharged and the gas pressure reaches 2 kPa, the automatic valve 4 1 a for gas discharge is automatically closed. In this way, through such a structure for excluding the gas G, the gas G can be prevented from entering the heat medium circulation pipe 29 and the oil pressure of the heat medium oil L can be maintained within a certain range. A three-way mixing valve 3 1 is installed in the middle of the heat medium circulation pipe 29 for connecting the outlet 1027 of the hot plate body and the gas recovery tank 39. This three-way mixing 阙 31 is branched from the heat medium oil L discharged from the outlet 1 0 2 7 of the hot plate body into a branch toward the first branch pipe 3 2 a and a branch toward the second branch pipe 3 2 b. And it can set the flow rate to any value. The heat medium oil L sent to the first branch pipe 3 2 a passes through the cooler 33 in the first branch pipe 3 2 a and merges with the upstream side of the gas recovery tank 39 of the heat medium circulation pipe 29. 3 3 a is the inlet of the heat medium oil L of the cooler 33, and 3 3 b is the outlet of the heat medium oil L, 33c is the outlet of cooling water, and 33d is the inlet of cooling water. On the one hand, the heat medium oil L sent to the second branch pipe 32b is merged to the heat medium oil heating device 1 2 0 0 on the second branch pipe 32b.

544397 V. Inventor (25) The upstream side of the gas recovery tank 39 of the heat medium circulation pipe 29. Further, the heat medium circulation pipe 29 on the downstream side of the pump 30 is branched to form a cooling control pipe 45 directed to the oil inlet 3 3a of the cooler 33. A cooling control valve 4 5 a is installed on the cooling control pipe 45. The cooling control valve 45 is a diaphragm valve whose opening degree can be adjusted. It can be set such that the heat medium oil L discharged from the pump 30 does not face the hot plate 1 0 1 0 (1 0 1 2). The flow of the heat medium oil L directly toward the cooler 33. The cooling control valve 4 5 a can transfer the heat medium oil L with a small flow rate which cannot be controlled by the aforementioned three-way mixing valve 31 to the cooler 33. In addition, these heat medium circulation circuits and control circuits are common between the upper hot plate 1 0 1 0 side and the lower hot plate 1 0 1 2 side. Although it detects the temperature of the upper hot plate 1 0 1 0, However, it is also possible to detect the temperature of the lower hot plate 12 or to separately detect the temperature of each hot plate and set up individual heat medium circulation circuits and control circuits. The heating medium oil heating device 1 2 0 0 of this embodiment is disclosed in FIG. 9 and FIG. 10. Fig. 10 is a sectional view taken along the line C-C in Fig. 9. This heat medium oil heating device 1 2 0 0 is provided with a total of four heating units 1 2 5 0 A ~ 1 2 5 0 D with a slightly U-shaped configuration which is viewed as a horizontally elongated front surface. Two sections towards the inside. Each of the heating units 1250A to 1250D has a schematic configuration including a U-shaped tube 1 2 5 2 having a substantially U-shape with a heat medium flowing therein, and an electric heater 1230 inserted into the U-shaped tube 1252. The four heating units 1250A to 1250D are covered so as to be completely contained in the heat shield 1256. Further, both ends of the U-shaped pipe 1 2 5 2 are provided so as to protrude from the both ends of the second pipe 54 to the outside 1J, respectively.

544397, description of the invention (26) Here, the U-shaped tube 1 2 5 2 is connected by the first and second straight portions 1252a, 1252b and the front ends of the first and second straight portions 1252a, ^ 5213. The arc-shaped elbow part is composed of 2 5 2 c. In addition, the electric heaters 1 230 are located in the first and second linear portions 1252a and 1252b of the U-shaped tubes 1 2 5 2 respectively, and are substantially coaxial and formed in a U-shape. In addition, each electric heater 1 2 3 0 is fixed to each end portion of the u-shaped tube 1 2 5 2, and each base end portion thereof protrudes more outwardly, and is mounted so as to be adjacent to the heat shield 1 2 5 The terminal box in the state of 6 extends inside 1 2 5 8. The terminal box 1 2 5 8 is connected to the thyristor unit 105 (refer to the seventh figure). The controller 8 controls the aforementioned thyristor unit 1035 and thus the heat generation amount of each electric heater 1230. The precision of this is that its heat transfer area as a heat exchanger is very sufficient. In addition to achieving a reliable heating action, because the U-shaped tube 1252 has an electric heater 1230, it passes the heat medium through Narrowing the cross-sectional area of the shaped tube 1252 can reduce the amount of heat medium (the storage volume) contained in the U-shaped tube 1 2 5 2. As a result, the thermal efficiency can be improved and the energy consumption can be reduced. In addition, by this, the electricity cost can be reduced and the economy can be improved. A plurality of shock absorbers 1 2 6 0 are installed on the outer peripheral surface of each electric heater 1 2 3 0, and these shock absorbers 1 2 6 0 are formed to abut the U-shaped tube 1 2 5 2 The appearance of the peripheral surface, thereby preventing vibration of the electric heater 1 230 when the heat medium oil flows. In addition, as shown in FIG. 10, the outer peripheral surfaces of the large straight-out ends of the first linear portions 1 2 5 2 a above the U-shaped tubes 1252 of the heating units 1250A and 1250C above are respectively connected respectively. First connection

544397 V. Description of the invention (27) 1264. After these first connecting pipes 1264 are collected at the first collecting pipe 1266, they are connected to the second branch pipe 3 2 b facing the gas recovery tank 39. In addition, the second straight line 1 2 5 2 b of the second straight portion 1 2 5 2 b below the U-shaped tubes 1252 of the heating units 1250B and 1250D below is connected to the second connecting tube 1268 respectively. The second connecting pipe 1268 is connected to the second branch pipe 32b facing the three-way branch valve after collecting at the second collecting pipe 1270. Here, the protruding end of the second straight portion 1252b below each U-shaped tube 1252 of the heating units 1250A and 1250C located above is above each U-shaped tube 1252 of the heating units 1250B and 1250D located directly below it. The protruding end portion of the first straight line portion 1252a is connected to the heating plate on the pressing device having the above-mentioned structure by the third connecting pipe 1272, and the heating and cooling operations of the hot plate 丨 〇i 〇 and 10 12 are described below. When the hot plates 1 0 1 0 and 1 0 2 are forcedly cooled, the control unit 8 series controls the controllable Shi Xi unit 1 0 3 5 and stops transmitting power to the heater 丨 丨 3 〇 At the same time, the two-way mixing valve is set The flow rate ratio of 3 1 transfers the entire heat medium oil 1 to the cooler 3 ^. Again, at a cooling rate of -5. When the cooling control is implemented above 〇 / min, the control unit 8 series controls the thyristor unit 丨 0 3 5 sets the heating value of the heater 丨 2 3 〇 to an appropriate value, and sets the flow ratio of the three-way mixing valve 3 丨 to The desired cooling rate can be obtained. In addition, when heating / heating control / cooling control (cooling speed -1 to -5 / min) of the hot plate 丨 〇 丨 〇, the three-way mixing valve 3 is switched so that the entire heat medium oil L is sent to the first Two branch pipes 32b. During heating and heating control, the control unit 8 performs feedback control on the heating value of the heater 2 3 0 according to the detection result of the temperature sensor 3 4 (Fig. 8). Party

Page 30 544397 V. Description of the invention (28) When the cooling control (cooling speed -1 ~ _ 5 ° C / min), the control unit 8 series makes the power heater 1 2 3 0 stop and according to the temperature sensor The detection result of 丨 〇4 controls the cooling control valve 4 5 a (Fig. 7) and transmits a part of the heat medium oil [to the cooler 33, so that the temperature of the heat medium is gradually lowered. As described above, the heated or cooled heat medium oil is pumped by the pump 30 to flow through the heating channels formed in the hot plate 1010 and the hot plate 1012, and the hot plate 1 0 1 0 and the hot plate 1 are controlled. 〇 12 The temperature. For example, in this embodiment, because the heat medium oil flows through the heater ^ ^ m ==, the heat medium oil is not easily affected by the shirt of the heater 1 2 3 0, and the heat medium oil can be heated. The device The speed of Yoshinosuke within 1200 is maintained at a level of 4.5 m / s while the heat medium #, fruit, even if the heat medium oil is heated to 40000c, the household 1 said ..., , 1 ^ 1 1 2 3 0 ^ ^ ^ ^ fa1 ^ ^ ^ ^ ^ ^ ^ can prevent the heat medium around the heater 1 2 3 0, the state of Λ '7f \ 〇, but the present invention It is not limited to the above-mentioned thermal degradation. Within the scope of the requirements of the present invention, various J configurations can be implemented. Without the heat medium oil heating device of the modified example, the second example is “electric heater” “the separate” one and the first straight part 1 In 2 5 2 a, 1 2 5 2 b, the \ 1 official body 1 2 5 2 f is formed as a so-called and extends linearly. They are respectively slightly coaxial electric heaters 1231 and are equipped with complainers. In other words, the shape The electric heater-like test piece 1 2 5 2 c. This bud is easy to set up, and it is easy to group people with a heat medium plus iUi 1 2 3 0 i. Compared with the overall cost of my home. Can be reduced

P.31 544397 V. Inventor Erming (29) [Effect of the invention] As mentioned before, according to the pressing device of the present invention, even if the molding force α to be molded is a resin having a high molding temperature, At this time, because it can suppress the vapor pressure of the heat medium oil, it is not necessary to greatly improve the pressure resistance performance of the piping system of the pressing device. In addition, according to the pressing device of the present invention, since the electric heater is not built in the hot plate, it is not necessary to install high-voltage wiring on the hot plate which is high temperature and needs to be moved up and down, and it is not necessary to configure the wiring as a safety-use mechanism. . Therefore, the cost of the pressing device can be reduced. In addition, since there are fewer restrictions on the installation of the pressing device, an appropriate device can be easily installed according to the needs of the device user.

Page 544 397 Brief Description of Drawings Figure 1 is a view showing the entire pressing apparatus according to the first embodiment of the present invention. FIG. 2 is a diagram showing a cross-section of the hot plate and its control circuit in FIG. 1. FIG. Fig. 3 is a partial cross-sectional side view of the hot plate viewed from the direction in-m in Fig. 2. Fig. 4 is an enlarged sectional view of the electric heater and its mounting portion in Fig. 2. FIG. 5 is a side view of a flange portion mounting portion of the electric heater in FIG. 4. FIG. Fig. 6 is a front sectional view of another example of the hot plate of the first embodiment. Fig. 7 is a view showing the entirety of a press apparatus according to a second embodiment of the present invention. FIG. 8 is a cross-sectional view of the hot plate in FIG. 7 and a control circuit thereof. Fig. 9 is a diagram of a whole heat medium oil heating device according to a second embodiment of the present invention. Fig. 10 is a partial sectional side view of the heating medium oil heating device viewed from the direction C-C in Fig. 9. Fig. 11 is an overall view of another example of a heating medium oil heating device according to a second embodiment of the present invention.

Page 33

Claims (1)

544397 Set the flat and one-to-one distance between the plates and close to each other. You can install a compact car 系 Ί LL. Specially invited to a middle school · 6 1 In the thermoformed shape, the road contains the flow of oil in the circulation and the quality of the medium. Heat and heat are added on the road to save heat and heat; the furnace is installed by the Ministry of Internal Security by the internal board 'hot plate to describe the heat before the system: oil and quality in front of the heat of the special description': placed in the pressure system In particular, the hot item plus board heat. The description of the oily substance will refer to the oil and heat quality system, and it will be described in the following paragraphs / r 巳 β. The item Chengji alkoxy ^ is specially described before the installation and installation, and can be installed before the installation. Levy OC No. ΛΓ 巳 β. Before the application, please apply for the installation system: before the previous description of the installation of the oil-filled dielectric pressure heat, which can be used in the installation There is an internal pressure range 1 on which the pressure adjustment pressure is installed. Fan Li specially requested to apply the description of Yu Yu in the quality of the special introduction, the presupposition of the pressure of the body and the pressure of the body and the inertia of the article by the warp system to adjust the force before the statement in the special The description of the installation pressure. The term qi and nitrogen are the same as those in the body and temperament, as described in the previous paragraph] i as described in Article Λ · 巳 家 利, please apply for the application of the article / r 巳 ί. The first meridian or system body gas nature Sui Shu anterior midway loop circulation through the mass medium heat before the previous continuation crimping plus phase system body air loop annulus shield Sui mass medium anterior heat introduction, the inner front tank and the swelling in the swell The front tube is matched, and the swollen oily medium of the inner branch tank is described in Item 7 of the installation and pressure in Zhengte. Page 34 544397 6. Scope of patent application The aforementioned pressure regulating mechanism controls the pressure of the inert gas in the expansion tank within a specified range. 9 · The pressing device according to item 8 in the scope of the patent application, wherein the pressure regulating mechanism has an inert gas control mechanism, and the inert gas control mechanism when the pressure of the inert gas in the expansion tank is lower than the first The pressure injects the inert gas into the expansion tank, and when the pressure of the inert gas in the expansion tank is higher than the second pressure, the inert gas is released from the expansion tank. The press device according to item 9 of the scope of the patent application, wherein the first pressure is 2 kPa and the second pressure is 5 kPa. 1 1 The pressing device according to item 1 of the scope of patent application, characterized in that the pressing device has a gas exhaust valve that scoops out gas generated in the heat medium circulation circuit. 1 2 · The pressing device according to item 11 of the scope of patent application, wherein the gas exhaust valve is installed on a gas recovery tank, and the gas recovery tank is disposed in a heat medium circulation circuit for recovering the heat medium circulation Gas generated in the circuit. 1 3 · The pressing device according to item 12 of the scope of the patent application, characterized in that when the gas pressure of the gas recovery tank exceeds a third pressure, the gas exhaust valve is opened to release the gas from the gas recovery tank, After the gas discharge valve is opened, when the gas pressure of the gas recovery tank is lower than the fourth pressure, the gas discharge valve is closed. 1 4 · The pressing device according to item 13 of the scope of patent application, wherein the third pressure is 4 kPa and the fourth pressure is 2 kPa. Page 35 544397 VI. Application scope of patents 1 5 · —A kind of pressing plate, each of which is installed in the flow 5; the leather is processed with the help of a ring of heat medium oil to make the above 1 6 · If the application is specialized in: the above In the hot film valve, 17 types of adjustable flow directions of the bypass heat medium oil through the partition of the cold bypass pipeline are set as follows: the hot plate heating medium oil containing the heating flow on the hot plate is included. 18 · If the application is specifically characterized by a device, a heater on the hot plate is provided between a pair of plates that can be accessed and separated, and the inside of the hot plate is formed to heat and circulate in a heat medium oil circulation circuit including the heating flow path. The oil heats the aforementioned hot plate, and is characterized by having a heat mechanism. The heat medium oil cooling mechanism is used for adjusting the cooling rate of the warm plate of the heat medium oil within a predetermined range when the heat is solidified by the pressing device and cooled. cool down. The pressing device according to Item 15 of the utility model is characterized in that the medium oil cooling mechanism has a bypass line, a cooler and a separation line branching from the heat medium oil circulation circuit and returning to the loop circuit; On the way of the bypass line, the heat medium oil passing through the cooling line is cooled; and the membrane valve is installed on the upstream side of the cooler of the bypass line, and the flow rate of the heat medium oil of the cooler is. A control method of the device, wherein a hot plate is arranged between a pair of flat plates which are pressed close to and separated by the control method, and a heating flow path is formed inside the installation heater and the hot plate. The heat medium oil will be hot, which is characterized in that the aforementioned heat medium oil is controlled by the pressing device described in item 17 of the silicon system. • The main component of the aforementioned heat medium oil is dimethyl polysiloxane. Page 36 544397 VI. Application scope of patent Alkanes. 1 9 · If you apply for a special method, then you can apply the first 2 0 · If you apply for a special method, which is characterized by the heat medium oil 2 1 · If you apply for a special method, which is characterized by a medium oil. 2 2 · If applying for a special feature is 2 3 · If applying for an autocratic method, the internal gas in the expansion tank of the circulation circuit is pressurized 2 4 · If applying for a feature is characterized by the pressure of the gas 2 5 · If applying for a feature is characterized by The force is lower than the inert profit range in the first box: the aforementioned profit range is characterized by control, the aforementioned thermal benefit range: the aforementioned control is within the profit range: the aforementioned pressure of the gas inert gas item 21 in the above pressure or Yu: The aforementioned tube accumulates in the control method medium oil. The scope of the control method specified in item 23 is the control method in item 24. The compression force higher than that described above is the nitrogen inert gas and heat medium in item 22. In the aforementioned compression, the expansion . For the above-mentioned pressing, when the second pressure is injected into the expansion tank, the control device of the pressing device according to item 17 or item 18 is characterized in that the pressing device heat-fixes the workpiece to be heated to 350 ~ 450. ° C. The control method of the pressing device according to Item 17 is as follows: In the aforementioned control method, the pressure of the heat medium oil is maintained within a predetermined range above the vapor pressure. The control method of the pressing device described in Item 20 of the scope of benefit: In the foregoing control method, the control method of the pressurized heating device by inert gas is used. The control of the above-mentioned pressing device is a method of controlling the expansion tank through an inert device by connecting it from a heat medium circulation circuit. The method of controlling the aforementioned inert device in the expansion box, the inert gas in the box presses the inert gas, Release in expansion tank Page 37 544397 6. Scope of patent application Inert gas. 2 6 · If the application is characterized by 5 k P a 〇 2 7 · If the application is exclusively characterized by the thermal cycle 2 2 · If the application is exclusively characterized by the gas recovery cycle 2 9 · If the application is exclusively characterized by The pressure of the gas released above the third pressure is lower than the 30th. If you apply for it, it is characterized by the benefits: the former domestic production profit: the front tank design generates the profit: the front force, the four pressure profit: the front wall No. 17 control Fang Sheng's gas surrounds the gas discharged in the heat medium in item 27. The control method described in item 28 is to control the pressing device described in item 29 of the third pressure range described in item 25 when the front gas discharge force is turned on: the aforementioned first pressure is 2kPa, the aforementioned item The second pressure is the control method of the pressing device. The method is the control method of controlling the gas exhaust valve to discharge. The control method of the pressing device is described. The outlet valve is installed on the gas recovery tank and is used in the circulation loop to recover the heat medium. In the control method of the pressing device, when the gas of the gas recovery tank is pressured to the gas exhaust valve, after the gas recovery tank valve is opened, the gas of the gas recovery tank closes the gas exhaust valve. The control method of the pressing device has a force of 4 kPa, and the aforementioned fourth pressure is a pressing hot plate controlled by 2 kPa 31. In the flow path, the control method of the pressing device with a ring of heat medium is characterized by: A method manufacturing device is: a heater mounted on a hot plate is arranged between a pair of accessible and separable plates and heating is formed inside the hot plate; heating is performed in a heat medium oil circulation circuit including the heating flow path; and the hot plate is heated by oil , The aforementioned pressing device is hot-pressed and solidified Page 38 544397 VI. Scope of patent application When cooling the processed product, adjust the temperature of the heat medium oil so that the aforementioned hot plate is cooled at a cooling rate within a specified range. 3 2 · The control method of the pressing device described in Item 31 of the female α application for patent scope, which is characterized by adjusting the temperature of the heat medium _ quality oil by controlling the cooler and the diaphragm valve, and the cooler is set at the On the way of the bypass line in the medium circulation circuit and then returning to the bypass line of the heat medium circulation circuit, the heat medium oil passing through the bypass line is cooled; the aforementioned diaphragm valve is installed on the upstream side of the cooler of the bypass line, and the flow direction can be adjusted The aforementioned heat medium oil flow rate of the cooler. 3 3. A pressing device, a hot plate is provided between a pair of plates that can be accessed and separated, and a heating flow path is formed in the heater installed on the hot plate and inside the hot plate. The heat plate is heated by circulating a heat medium oil of φ in a heat medium oil circulation circuit including the heating flow path, wherein the pressing device includes a heat medium disposed outside the heat plate and heating the heat medium oil. Oil heating device, the heating medium oil heating device has a U-shaped pipe for circulating the heat medium oil and is inserted into at least a part of the U-shaped pipe so that the U-shaped pipe is coaxial. The heater. 3 4. The pressing device according to item 33 of the scope of patent application, wherein the electric heater is inserted throughout the u-shaped tube. 3 5. The device according to item 33 of the scope of patent application The pressing device, in which the aforementioned electric heater is inserted only in a straight portion of the aforementioned U-shaped tube. 36. The pressing device according to item 33 or item 34 or item 35 of the scope of patent application, characterized in that The above-mentioned U-shaped tube is covered by a heat-insulating cover. / 37. The pressing device described in Item 33 of the female patent application scope is characterized in that Page 39 544397 VI. The scope of patent application is: • The aforementioned amnesty medium oil is a silicon-based heat medium oil 0 38 • The pressing device described in item 37 of the patent scope is characterized by: • The main component of the aforementioned heat medium oil is two Methyl polysiloxane fired 0 39 • The pressing device as described in item 37 of the patent scope, which is characterized in that the aforementioned pressing device can heat the aforementioned hot plate to 3 50, -450 ° C 〇40 • as above The pressing device according to item 33 of the patent scope is characterized in that: The pressing device is provided with a pressure adjusting device that maintains the pressure of the teaching medium oil within a predetermined range above the vapor pressure of the medium oil. 41 The pressing device according to item 40 of the patent is characterized in that the aforementioned pressure adjustment device pressurizes the heat medium oil with an inert gas. 42 The pressing device described in item 41 of the patent scope is characterized in that the aforementioned inert gas system is nitrogen 0 43 • The pressing device described in item 41 or 42 of the patent scope is characterized in that the aforementioned inert gas, The piping branched from the tritium medium circulation circuit is stored in an expansion tank Oja y connected to the heat medium circulation circuit, and the aforementioned heat medium is pressurized by an inert gas in the expansion tank. 44 / ® Patent Application No. 43 The pressing device is characterized in that the pressure adjusting device controls the pressure of the inert gas in the expansion tank within a predetermined range. 45 The pressing device as described in item 44 of the patent scope > is characterized in that • The aforementioned pressure adjustment device has an inert gas control device, which is used as an expansion tank When the pressure of the inert gas in the expansion box is lower than the first pressure, inject the inert gas into the expansion box J. When the pressure of the inert gas in the expansion box is Page 40 544397 6. Scope of patent application At the second pressure, the inert gas is released from the expansion tank. 46. The pressing device according to item 45 of the I application and J range, characterized in that the aforementioned first pressure is 2 kPa and the aforementioned second pressure is 5 kPa. 47. The application of the pressing device described in item 37 of the application for women's patent and J, characterized in that the aforementioned pressing device has a gas exhaust valve, which can exhaust gas generated in the thermal circulation circuit. 4 8 · The press device according to item 47 of the application scope, characterized in that the aforementioned gas exhaust valve is installed on a gas recovery tank, and the gas recovery tank is provided in a heat medium circulation circuit for Recover the gas generated in the heat medium circulation circuit. 49. The pressing device according to item 48 of the scope of patent application, wherein the gas exhaust valve opens the gas exhaust valve when the gas pressure of the gas recovery tank exceeds the third pressure, and removes the gas from the gas recovery tank. When the gas exhaust valve is opened and the gas pressure of the gas recovery tank is lower than the fourth pressure, the gas exhaust valve is closed. 50. The pressing device according to item 49 of the scope of the application for spear 4, characterized in that the aforementioned third pressure is 4 kPa and the aforementioned fourth pressure is 2 kPa. 51. The pressing device according to item 33 of the scope of the application for a patent, wherein the pressing device has a heat medium oil cooling device, and the workpiece can be cooled by hot pressing after the pressing device is cooled by the pressing device. The aforementioned hot plate is cooled at a cooling rate within a certain range by adjusting the temperature of its heat medium oil. 5 2. The pressing device according to Item 51 of the female α application for a patent, characterized in that the pressing device is provided with a heat medium oil distribution device and can be controlled. Page 41 544397 VI. Scope of patent application The flow rate ratio of the heat medium oil to the heat medium oil heating device and the heat medium oil cooling device is divided. 5 3 · The pressing device according to item 51 or item 52 of the scope of patent application, wherein Ted L is that the heat medium oil cooling device has a branch from the heat medium oil circulation circuit and returns to the heat medium. The bypass line of the oil circulation circuit and the cooler provided on the way of the bypass line to cool the heat medium oil passing through the bypass line, and the cooler installed on the upstream side of the cooler of the bypass line can adjust the flow direction Diaphragm valve for the aforementioned heat medium oil flow of the cooler. 5 4. —A control method of a pressing device, which is provided with a hot plate between a pair of flat plates that can be accessed and separated, and circulates in a heat medium oil circulation flow path including a heating flow path formed inside the aforementioned hot plate. A pressing device for controlling the structure of the flowing hot medium oil to heat the hot plate, characterized in that the aforementioned control method is to control the pump to circulate the hot medium oil, and to control the coaxial arrangement with the U-shaped tube outside the hot plate The electric heater is inserted in at least a part of the U-shaped tube through which the heat medium oil passes through the heat medium oil heating device for heating the heat medium oil to heat the heat medium oil. 55. The control method of the pressing device described in Item 54 of the female patent application scope is to heat the aforementioned hot plate to 350 ~ 450 ° C by the aforementioned control method. 56. The control method of the pressing device according to item 54 or item 55 of the scope of patent application, wherein the aforementioned control method is to maintain the pressure of the heat medium oil within a certain range above the vapor pressure of the heat medium oil Inside. 5 7. The control method of the pressing device according to item 56 of the scope of patent application, wherein the aforementioned control method is to add the aforementioned heat medium oil with an inert gas. 544397 6. Applying for patents and maintaining the pressure of the aforementioned heat medium oil within a certain range above the steam pressure of the aforementioned heat medium oil. 5 8. The control method of the pressing device according to item 57 of the scope of the patent application, wherein the inert gas system is accumulated in an expansion tank connected to the heat medium circulation circuit through a pipe branched from the heat medium circulation circuit. The control method is to pressurize the heat medium oil with the inert gas in the expansion tank. 5 9. The control method of the pressing device according to item 58 of the scope of the patent application, wherein the control method is to control the pressure of the inert gas in the expansion tank to a certain range. 60. The control method of the pressing device according to item 59 of the scope of the patent application, wherein the aforementioned control method is to inject the aforementioned expansion tank when the pressure of the aforementioned inert gas in the expansion tank falls below the first pressure. The inert gas is released from the expansion tank when the pressure of the inert gas in the expansion tank falls below a second pressure. 61. The method for controlling a pressing device according to item 60 of the scope of the patent application, wherein the first pressure is 2 kPa and the second pressure is 5 kPa. 62. The control method of the pressing device according to item 54 of the scope of the patent application, wherein the control method is to remove the gas generated in the heat medium circulation circuit. 6 3. The control method of the pressing device according to item 62 of the scope of the patent application, wherein the aforementioned control method is performed when the pressure of the gas in the gas recovery tank provided in the heat medium circulation circuit exceeds the third pressure. The gas recovery tank releases gas, and when the gas is released from the gas recovery tank, Page 43 544397 VI. Scope of patent application If the gas pressure of the aforementioned gas recovery tank drops below the fourth pressure, stop releasing gas. 64. The method for controlling a pressing device according to item 63 of the scope of patent application, wherein the third pressure is 4 kPa and the fourth pressure is 2 kPa. 6 5. The control method of the pressing device described in Item 54 of the scope of patent application, wherein the aforementioned control method is to adjust the heat medium oil before cooling the processed object after the pressing device is hot-pressed and solidified. The temperature causes the aforementioned hot plate to be cooled at a cooling rate within a certain range. 6 6. The control method of the pressing device according to item 65 of the scope of the patent application, wherein the aforementioned control method controls the aforementioned heat medium distributed to the aforementioned heat medium oil heating device and the heat medium oil cooling device for cooling the aforementioned heat medium oil Oil t flow ratio. 6 7 · If the control method of the pressing device according to item 65 or item 66 of the patent application scope, the aforementioned control method is set to return to the aforementioned heat medium oil in the middle of the branch from the aforementioned heat medium oil circulation circuit The bypass pipe of the circulation circuit adjusts the flow rate of the heat medium oil toward the cooler for cooling the heat medium oil passing through the bypass line. Page 44