KR100886601B1 - Device and method for press forming - Google Patents

Abstract

In the press molding apparatus, the stamper is pushed onto the object to be transferred to transfer the pattern, and then the stamper is easily released from the object.

The press-forming apparatus 1 provided with the temperature control part 34a, 34b which heats and cools the upper and lower stampers 35a, 35b, the stamper 35a, 35b, and the air blow nozzle 41 is the temperature control part 34a. , 34b is heated above the softening temperature of the object to be processed 2, and press-forms stampers 35a and 35b having a softening temperature or higher pressed on both surfaces of the object to be processed 2 in a vacuum or reduced pressure state. After press molding, the temperature control part 34a and the temperature control part 34b are cooled to different temperatures, and the distance between the stampers 35a and 35b is widened by ΔH. In addition to opening the vacuum chamber to the atmosphere, an air blow is blown to the gap between the stampers 35a and 35b resulting from deformation due to thermal deformation and the workpiece 2.

Press forming equipment

Description

Press Forming Apparatus and Method {DEVICE AND METHOD FOR PRESS FORMING}

FIG. 1: is a figure which shows schematic structure of the press-molding apparatus 1 which concerns on this embodiment.

2 is a cross-sectional view showing a detailed configuration of the press section 30.

3 is a diagram illustrating a detailed configuration of the press section 30 and the temperature control device 60.

4 shows a set of target temperatures for heating and cooling.

Fig. 5 shows the time change of various states in one cycle in the first press operation.

FIG. 6: is a figure which shows typically the operation | movement state of one cycle of the press part 30. As shown in FIG.

7 is a flowchart showing a processing procedure of one cycle of press working in the first press operation.

8 shows the time change of various states in one cycle in the second press operation.

9 is a flowchart showing a processing procedure of one cycle of press working in the second press operation.

* Explanation of symbols for the main parts of the drawings *

1: press forming apparatus 11: servo motor

12: Pulley 13: Timing Belt

14 ball screw 15 encoder

16: servo amplifier 17: controller

21: Slide 22: Bolster

23: slide position detecting means 24: pressing force detecting means

30: press part 31: upper case

32: lower case 33: heat insulation plate

34a, 34b: temperature control part 35a, 35b: stamper

36: atmospheric opening 37: vacuum suction opening

38a, 38b: temperature sensor 39: vacuum packing

40: vacuum pump 41: air blow nozzle

60: temperature control device

Patent Document 1: Japanese Unexamined Patent Publication No. 2006-167788

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to press molding in which a stamper having a fine pattern is pushed onto the surface of the thermoplastic resin plate to transfer the fine pattern onto the surface of the thermoplastic resin plate, and in particular, the stamper is released from the thermoplastic resin plate after press molding. It relates to a technology that makes it easy to shape.

DESCRIPTION OF RELATED ART The apparatus which heat-transfer press-forms a fine pattern in the vacuum chamber of a vacuum or reduced pressure state using a thermoplastic resin as a material is known. This press-molding apparatus is used, for example, in the manufacture of a light guide plate made of a thermoplastic resin used in a liquid crystal display panel.

In such a press-molding apparatus, when the stamper having a fine pattern is pushed onto the surface of the thermoplastic resin plate and the transfer of the pattern is completed, the thermoplastic resin plate must be released from the stamper. By the way, the stamper may stick to the surface of the thermoplastic resin plate and may not be easily released. For such a case, Patent Document 1 describes a method of blowing air between a workpiece and a stamper by injecting an air blow to the contact surface between the workpiece and the stamper to release the mold.

The mold release using the air blow preferably functions when the air of the air blow enters the gap (release surface) of the object to be processed and the stamper when there is even a slight gap between the object to be processed and the stamper.

However, when there is a vacuum between the stamper and the workpiece, there is no gap between the workpiece and the stamper. Therefore, even if it blows an air blow, since air cannot enter between a process object and a stamper, it may not be able to release. This is particularly likely to occur when press molding is performed under vacuum or a reduced pressure close to the vacuum.

Then, in the press molding apparatus, the objective of this invention is to make it easy to reliably release a stamper from a to-be-processed object, after pushing a stamper against a to-be-processed object and transferring a pattern.

The press-molding apparatus according to one embodiment of the present invention heats and cools the first and second stampers 35a and 35b for press-molding the plate-shaped thermoplastic workpiece 2 and the first and second stampers. The first and second temperature regulating sections 34a and 34b, a temperature control device 60 for controlling the temperature of the first and second temperature regulating sections to a target temperature, and an air blow nozzle for injecting an air blow ( 41, 41), press-molding the first and second stampers on both surfaces of the object to be press-molded, and then subjecting the object to the object using the air blow from the air blow nozzle. It is a press molding apparatus 1 which mold-releases from 2 stampers. And when the said temperature control apparatus press-presses the said 1st and 2nd stamper to the said to-be-processed object, both the said 1st and 2nd temperature control parts have the target temperature more than the softening temperature of the said to-be-processed object Heating control means for controlling the heating so as to be cooled, and cooling control means for controlling the cooling so that the first and second temperature regulating parts become different target temperatures below the softening temperature when the air blow nozzle injects the air blow. do.

In a preferred embodiment, the cooling control means may control the first and second temperature control units to be different from each other in the target temperature by cooling the target temperature above the softening temperature.

In another preferred embodiment, the cooling control means may cool the first and second temperature regulating sections and then reheat them to control the first and second temperature regulating sections to be different target temperatures. .

The press-molding method according to one embodiment of the present invention heats and cools the first and second stampers 35a and 35b for press molding the plate-shaped thermoplastic workpiece 2, and the first and second stampers. In the press-molding method of the press-molding apparatus 1 equipped with the 1st and 2nd temperature control parts 34a and 34b for this purpose, and the air blow nozzles 41 and 41 which inject | pour air blow, The said 1st and 2nd 2, the temperature control unit, the step of heating the first and second stampers above the softening temperature of the object, and pressing the first and second stampers heated above the softening temperature, on both sides of the object to press Forming and expanding the distance between the first and second stampers by a predetermined distance after the press molding, and toward the surface where the first and second stampers are in contact with the object to be processed. When a grizzly to inject the method comprising injecting the air blow, the air blow from, the first and second temperature control unit comprising: cooling so that a different target temperature respectively.

EMBODIMENT OF THE INVENTION Hereinafter, the press molding apparatus which concerns on one Embodiment of this invention is demonstrated using drawing.

FIG. 1: is a figure which shows schematic structure of the press molding apparatus 1 which concerns on this embodiment.

The press-molding apparatus 1 is equipped with the press part 30 which presses the process object 2, and the structure for controlling the press part 30, as shown in FIG. The configuration for controlling the press section 30 includes rotation of the servo motors 11, 11 and the servo motors 11, 11, which are electric motors for moving the slide 21 up and down, in a linear motion of the slide 21. Power conversion mechanism (pulleys 12, 12, timing belts 13, 13, ball screws 14, 14) for converting, controller 17 for driving servo motors 11, 11, and stamper 35 Is provided with a temperature control device 60 for adjusting the temperature. The controller 17 outputs a control signal for driving the servo motors 11 and 11 by position control based on the outputs of the slide position detecting means 23 and 23, and the pressing force detecting means 24 and 24. Based on the output of the control signal, the control signal for driving the servo motors 11 and 11 is output by the pressure control. The detail of the control signal which the controller 17 outputs is mentioned later. When the servo amplifiers 16 and 16 receive a control signal from the controller 17, the servo amplifiers 16 and 16 control the current output to the servo motors 11 and 11 based on this control signal and the outputs of the encoders 15 and 15. That is, the servo motor 11 operates by the instruction | indication from the controller 17, and the below-mentioned stamper 35 attached to the slide 21 approaches and is carried out to the object to be processed 2. And the stamper 35 is pushed by the process target object 2 by the instruction | indication of the controller 17, and the process target object 2 is press-molded.

The object to be processed 2 is a plate made of a thermoplastic resin, for example, a plate for a light guide plate made of acrylic or polycarbonate. The stampers 35a and 35b are thin plates each having a thickness of about 0.2 to 2.0 mm, each made of stainless steel or nickel having, on the surface, an uneven shape to be formed on the surface of the light guide plate.

FIG. 2 is a cross-sectional view showing a detailed configuration of the press section 30, and FIG. 3 is a diagram showing a detailed configuration of the press section 30 and the temperature control device 60. As shown in FIG.

The press section 30 has an upper case 31 coupled to the slide 21 and a lower case 32 coupled to the bolster 22. In accordance with the vertical movement of the slide 21, the upper case 31 moves up and down. And the vacuum packing 39, 39, 39, 39 is attached to the part which the upper case 31 and the lower case 32 contact, respectively. When the upper case 31 is lowered and the vacuum packings 39 and 39 attached to the upper case 31 and the vacuum packings 39 and 39 attached to the lower case 32 are in contact with each other, the upper case ( 31 and a sealed space (vacuum chamber) are formed inside the lower case 32.

The lower case 32 is provided with the air blow nozzles 41 and 41 which inject | pour the air blow. This air blow is injected near the contact surface between the stamper 35 and the object 2 in order to release the object 2 from the stamper 35 after press molding. The timing of spraying the air blow is described later.

The lower case 32 is further provided with an atmospheric opening 36 and a vacuum suction port 37. The atmospheric opening 36 is open to the atmosphere through the vacuum valve 46. The vacuum suction port 37 is connected to the vacuum pump 40 via the vacuum valve 45. When the inside of the vacuum chamber is brought into a vacuum or reduced pressure state, the vacuum valve 46 is opened, the vacuum valve 46 is closed, and the vacuum pump 40 is evacuated. When the inside of the vacuum chamber is opened to the atmosphere, the vacuum valve 46 is opened while closing the vacuum valve 45. In addition, the lower case 32 is equipped with a pressure sensor (not shown) for detecting air pressure in the vacuum chamber.

Inside each of the upper case 31 and the lower case 32, the heat insulation board 33: 33a, 33b and the plate-shaped temperature control part (henceforth a temperature control part) from the outer side to the inner side (34: 34a, 34b) and the stamper 35: 35a, 35b which transfers a predetermined uneven | corrugated pattern to the process target object 2 are laminated | stacked in this order, and is comprised. The temperature control parts 34a and 34b are provided with temperature sensors 38a and 38b for detecting the temperature of the temperature control part.

In the inside of the temperature control part 34, the flow path for fluids, such as a liquid or gas supplied from the temperature control apparatus 60, flows. And the flow of the stamper 35 is performed by making the fluid of predetermined temperature flow in this flow path. As will be described later, the heating temperature and cooling temperature of the temperature control part 34 can be determined by controlling the temperature of the fluid to be flowed in the flow path in the temperature control part 34 by the temperature control device 60.

The temperature control apparatus 60 controls the temperature of the temperature control part 34 to a target temperature. For example, the temperature control device 60 is provided with a heating control means and a cooling control means, and uses high temperature steam as a medium for heating the temperature control part 34, and low temperature cooling water as a medium for cooling, One of these is supplied to the upper and lower temperature control parts 34a and 34b, respectively. That is, the temperature control device 60 includes a cooling water supply port 62 through which cooling water flows, a steam supply port 63 through which steam flows in, a cooling water return port 64 through which cooling water is drained, and a temperature control unit ( 34) is provided with an air supply port 65 for discharging the cooling water.

Each supply port 62 and 63 is connected with the supply line 66 which supplies steam or cooling water to the upper and lower temperature control parts 34a and 34b, respectively, and the cooling water return port 64 is the upper and lower temperature adjustment. It is connected to the drain line 67 from the part 34a, 34b. And solenoid valves 611-616 are arrange | positioned between each supply port 62 and 63 and the supply line 66. As shown in FIG. And as mentioned later, heating and cooling of the upper and lower side temperature control parts 34a and 34b are performed by controlling the opening and closing of the solenoid valves 611-616.

The temperature control device 60 has a heating control means and a cooling control means, and can independently control the upper and lower temperature control parts 34a and 34b so that the upper and lower temperature control parts 34a and 34b have different temperatures, respectively. have. In addition, the target set temperature is predetermined in plural in either case when the temperature control part 34 is heated or when it cools, and the temperature control apparatus 60 sets one temperature selected from them as a target temperature. do. For example, in this embodiment, as shown in FIG. 4, two sets of heating patterns and two sets of cooling patterns which set the temperature of the upper and lower side temperature control parts 34a and 34b, respectively, are prepared, Among them, Heating or cooling takes place in either temperature pattern.

Next, control of the temperature control apparatus 60 at the time of heating and cooling the temperature control part 34 is demonstrated.

First, at the time of heating, the heating control means of the temperature control apparatus 60 opens the solenoid valves 613, 614, 615, and closes the solenoid valves 611, 612, 616, 617. As a result, steam is supplied from the steam supply port 62 to the upper and lower temperature regulating parts 34a and 34b, thereby heating them. At this time, the temperature control apparatus 60 heating control means monitors the temperature of each of the upper and lower side temperature control parts 34a and 34b by the temperature sensors 38a and 38b.

For example, when the temperature pattern of "heating 1" is selected, the temperature control device 60 supplies steam to the upper temperature control part 34a, and the solenoid valve 613 when the temperature exceeds the set temperature Hu1. To close it. When the solenoid valve 613 is closed, the steam supply to the upper temperature control part 34a stops, and the temperature of the upper temperature control part 34a starts to fall. And if the temperature of the upper temperature control part 34a is less than set temperature Hu1, the temperature control device 60 will open a solenoid valve 613 again, and will resume steam supply to the upper temperature control part 34a. By opening and closing this solenoid valve 613, the temperature of the upper side temperature control part 34a is hold | maintained at set temperature Hu1, and the temperature control part 34a heats the stamper 35a to set temperature Hu1.

When heating the lower temperature control part 34b, the temperature control apparatus 60 is similarly controlled to control opening and closing of the solenoid valve 614, and to hold | maintain set temperature H1. Thereby, the temperature control part 34b heats the stamper 35b to preset temperature H11.

At this time, by opening and closing the solenoid valve 613 and the solenoid valve 614 independently, the upper and lower temperature control parts 34a and 34b and the stampers 35a and 35b can be heated to different temperatures, respectively.

In addition, when the temperature pattern of "heating 2" is selected, the same control as in the case of "heating 1" is performed by setting the set temperatures of the upper and lower temperature adjusting units 34a and 34b to Hu2 and Hl2.

On the other hand, at the time of cooling, the cooling control means of the temperature control device 60 opens the solenoid valves 611, 612, 616, and closes the solenoid valves 613, 614, 615, 617. As a result, cooling water is supplied to the upper and lower temperature control parts 34a and 34b, and the temperature control parts 34a and 34b are cooled. As in the case of heating, since the temperature of the temperature control parts 34a and 34b is monitored by the temperature sensors 38a and 38b, the temperature control of the temperature control parts 34a and 34b is as follows based on the monitoring result. Is carried out.

That is, when the temperature pattern of "cooling 1" is selected, cooling water is supplied to the upper temperature control part 34a, and the solenoid valve 611 is closed when temperature falls below set temperature Cu1. By closing the solenoid valve 611, the supply of cooling water to the upper temperature control part 34a is stopped, and the temperature drop of the upper temperature control part 34a becomes gentle. Similarly with respect to the lower temperature control part 34b, the cooling water is supplied to the lower temperature control part 34b, and the solenoid valve 612 is closed when the temperature is lower than the set temperature Cl1. Thereby, the upper and lower side temperature control parts 34a and 34b can be cooled to set temperature Cu1 and Cl1, respectively, and with this, the stamper 35a and 35b is also cooled by the cooled temperature control parts 34a and 34b. It can be set temperature Cu1, Cl1.

At this time, by opening and closing the solenoid valve 611 and the solenoid valve 612 independently, the upper and lower temperature control parts 34a and 34b and the stampers 35a and 35b can be cooled to different temperatures, respectively.

In addition, when the temperature pattern of "cooling 2" is selected, the control similar to the case of "cooling 1" is performed by setting the set temperature of each of the upper and lower temperature control parts 34a and 34b as Cu2 and Cl2.

Moreover, in order to prevent the overcooling of the temperature control part 34, the cooling water remaining in the temperature control part 34 can be drained. This drainage is performed by closing the solenoid valve 617 with the solenoid valves 611 and 612 closed.

Next, one cycle of the operation of pressing the object to be processed by the press-molding apparatus 1 according to the present embodiment will be described with reference to FIGS. 5 to 9.

5D shows the time change of the various states of one cycle in the 1st press operation | movement which presses the process target object 2. In FIG. That is, A in FIG. 5 is a change in position of the slide in the up and down direction, B in FIG. 5 is a change in press force, C in FIG. 5 is a temperature change in the temperature control part 34, and D in FIG. 5 is an air pressure in the vacuum chamber. Each change is shown.

6: D is a figure which shows typically the state of the operation | movement of one cycle of the press part 30. FIG. In FIG. 6, the position change of a slide is shown by S1-S4. These S1-S4 correspond to S1-S4 shown by the vertical axis | shaft of A of FIG.

7 is a flowchart showing a processing procedure of one press working cycle.

First, at time O, the position of the slide 21 is an upper limit position S1. At this time, the object to be processed 2 is carried into the press section 30 (S11). From here, by the position control by the controller 17, the slide 21 descends to the position S2 which the upper and lower vacuum packings 39 and 39 contact (S12).

When the slide 21 descends to S2 (time: t1), the vacuum pump 40 starts to vacuum the inside of the vacuum chamber (S13). As a result, as shown in FIG. 5D, the pressure in the vacuum chamber begins to decrease.

In addition, after time t1, in parallel with the vacuumization, as shown in FIG. 5C, the temperature control device 60 starts to heat the upper and lower temperature control parts 34a and 34b in a temperature pattern of "heating 1". (S14). In the first press operation, the set temperatures Hu1 and Hl1 of the upper and lower side temperature control parts 34a and 34b of "heating 1" are the same, and the set temperature is 30 ° C or more than the softening temperature Tg of the object to be processed 2. It is set high. Therefore, when the object to be processed (2) is, for example, Hu1 = H1 = 120 to 140 ° C.

Next, when the temperature of the upper and lower side temperature regulating parts 34a and 34b reaches approximately the set temperatures Hu1 and Hl1 and the degree of vacuum in the vacuum chamber reaches a predetermined set vacuum degree P (time: t2), The slide 21 is lowered by the pressing force control by the controller 17. At this time, as shown in B of FIG. 5, the controller 17 lowers the slide 21 so as to have the set pressing force L, and presses the stamper 35 to the workpiece 2 at the pressing force L (S15). . This pressing force L is hold | maintained for a while, and the object to be processed 2 is press-molded.

By the way, the position of the slide 21 at the time of pressing by the pressing force L becomes a position of substantially S3, as shown to A of FIG. However, at this time, since the pressing force control is performed instead of the position control, the position of the slide 21 follows the thermal expansion and thermal contraction accompanying the heating and cooling of the temperature regulating sections 34a and 34b and the object to be processed 2. It also moves up and down slightly, and the pressing force is kept constant.

Next, as shown to C of FIG. 5, the temperature control apparatus 60 starts to cool the upper and lower side temperature control parts 34a and 34b by the temperature pattern of "cooling 1" from time t3 (S16). At this time, the position of the slide 21 (A in FIG. 5), the press pressing force (B in FIG. 5), and the air pressure in the vacuum chamber (D in FIG. 5) are maintained as it is.

In the first press operation, the set temperatures Cu1 (also referred to as the first target temperature) and Cl1 (also referred to as the second target temperature) of the temperature control units 34a and 34b of the "cooling 1" are all softening temperatures of the object to be processed. It is set lower than Tg and set so that the set temperature Cu1 of the upper temperature control part 34a and the set temperature Cl1 of the lower temperature control part 34b are different (for example, Cu1> Cl1). Therefore, Cu1 and Cl1 should just be between 50-90 degreeC when a process target is acryl.

When the temperature of the upper and lower side temperature regulating parts 34a and 34b is cooled to the set temperature of "cooling 1", the controller 17 raises the slide 21 by a predetermined moving distance ΔH by position control, and the upper and lower stampers 35a. , 35b) to widen the distance and move to the position of S4 (S17). Here, the movement distance ΔH of the slide 21 may be a distance at which the vacuum chamber does not open and a gap in which air of the air blow enters between the surface of the object 2 and the stamper 35 may be formed. .

At this time, when the slide 21 rises in the state where the temperature of the upper and lower side temperature control parts 34a and 34b differs, the object to be processed 2 is bent by the temperature gradient generated between the upper and lower surfaces of the object to be processed 2. It is deformed to lose. This warpage produces a small gap between the upper and lower stampers 35a and 35b and the object to be processed 2. Here, the deflection of the object 2 is preferably as small as possible. Therefore, by optimizing the moving distance ΔH and the set temperatures Cu1 and Cl1, it is possible to release the workpiece 2 with minimal warpage.

At the time t4, the vacuum chamber is opened to the atmosphere (S18) and at the same time, the air is blown from the air blow nozzle 41 toward the upper and lower surfaces of the object 2 and the stampers 35a and 35b (S19) to thereby process the object. Air enters between (2) and stampers 35a and 35b, and the object to be processed 2 is released from the stamper. The air blow is performed only for a predetermined time (here, between the times t4 to t5).

Thereafter, the temperature control device 60 cools the upper and lower temperature control parts 34a and 34b in a temperature set pattern of "cooling 2" (S20).

The set temperatures Cu2 and Cl2 (also referred to as the third target temperature) of the temperature control unit of "cooling 2" are the same temperature and are lower than any of the set temperatures Cu1 and Cl1 of the upper and lower temperature control units of "cooling 1". . By setting the set temperatures Cu2 and Cl2 to isothermal, the warpage of the object 2 is corrected again. Therefore, when the object 2 is an acryl, set temperature Cu2 and Cl2 are set between 40-70 degreeC.

When the temperature of the upper and lower side temperature control parts 34a and 34b becomes the set temperatures Cu2 and Cl2 of "cooling 2" (time: t5), the slide 21 rises to the upper limit position S1 by position control (S21), The molded object 2 can be taken out.

Next, the second press operation will be described. It demonstrates centering around a difference with a 1st press operation.

8 and 9 are graphs and flowcharts showing time changes of various states in one cycle in the second press operation for pressing the object 2. The second press operation is the same as the first press operation until time t3. Therefore, in the flowchart, steps S31 to S35 are the same as steps S11 to S15 in the first press operation.

In the 2nd press operation, after time t3, the temperature control apparatus 60 adjusts the temperature control part 34a according to the temperature pattern of "cooling 1" in which set temperature was set to Cu1 = Cl1 (it is also called 4th target temperature). 34b) is cooled (S36). Here, the set temperatures Cu2 and Cl2 are both below the softening temperature Tg of the object to be processed (2). Then, after the temperature control units 34a and 34b are cooled to the set temperature, that is, at time t4, the temperature control device 60 reheats the temperature control units 34a and 34b according to the temperature set of "heating 2". (S37).

At this time, the set temperatures Hu2 (also called the fifth target temperature) and Hl2 (also called the sixth target temperature) are all equal to or less than the softening temperature Tg of the object to be processed 2, and the upper temperature control part 34a The set temperature Hu2 and the set temperature Hl2 of the lower temperature control part 34b are set differently (for example, Hu2> Hl2).

When heating is performed by "heating 2" and a temperature gradient occurs in the object 2, the slide 21 is raised by ΔH by the position control by the controller 17 and moved to the position of S4 (S38). . Then, after the slide 21 moves to S4, at time t5, the vacuum chamber is opened to the atmosphere (S39) and at the same time, between the upper and lower surfaces of the object 2 and the stamper 35 from the air blow nozzle 41. By injecting air toward the air (S40), air enters between the slightly curved object 2 and the stampers 35a and 35b similarly to the case of the first press operation, and the object 2 is removed from the stampers 35a and 35b. It is released.

That is, in the second press operation, the upper and lower stampers 35a and 35b are once cooled to the same temperature below the softening temperature of the object to be processed 2, and then the temperature of the upper and lower stampers 35a and 35b is different from the softening temperature. By reheating so that a temperature gradient may arise in the object to be processed 2, and it bends.

Then, in the same manner as in the case of the first press operation, cooling is performed in accordance with the temperature pattern of "cooling 2" so that the upper and lower temperature adjusting parts 34a and 34b become the same temperature (also called the seventh target temperature) (S41). ), The slide 21 is raised to the upper limit position S1 (S42).

Embodiment of this invention mentioned above is an illustration for description of this invention, and is not intended to limit the scope of this invention only to such embodiment. Those skilled in the art can practice the invention in various other aspects without departing from the spirit of the invention.

For example, although the above-mentioned embodiment demonstrated the case where press molding is performed in a vacuum, this invention is applicable also when performing press molding in the state which is not a vacuum. On the other hand, when press-molding in vacuum is performed similarly to the above-mentioned embodiment, especially the surface where the stamper and a process object contact | connects becomes a vacuum, and mold release is difficult, and this invention is especially effective.

By the press-molding apparatus of the present invention, after the stamper is pushed onto the object to be transferred to transfer the pattern, the stamper can be easily reliably released from the object to be processed.

Claims (4)

First and second stampers 35a and 35b for press-molding the plate-shaped thermoplastic processing object 2 and First and second temperature regulating sections 34a for heating and cooling the first and second stampers. 34b), a temperature control device 60 for controlling the temperature of the first and second temperature regulating units to a target temperature, and air blow nozzles 41 and 41 for injecting an air blow, both surfaces of the object to be processed. A press-molding apparatus (1) for pressing and pressing the first and second stampers in to press-molding, and then releasing the object from the first and second stampers by using the air blow from the air blow nozzle, The temperature control device, Heating control means for heating and controlling the first and second stampers to be a target temperature equal to or higher than the softening temperature of the object when the press molding is performed by pushing the first and second stampers onto the object; , When the air blow nozzle injects the air blow, the distance between the stamper between the first stamper and the second stamper is widened to a predetermined distance, and the first and second temperature regulating portions are different from each other at or below the softening temperature. Cooling control so that it may become a 1st and 2nd target temperature, and after that, the said 1st and 2nd temperature control part will carry out cooling control so that it may become a 3rd target temperature below the 1st and 2nd target temperature. Press molding apparatus provided with a control means. First and second stampers 35a and 35b for press-molding the plate-shaped thermoplastic processing object 2 and First and second temperature regulating sections 34a for heating and cooling the first and second stampers. 34b) and the press molding method of the press molding apparatus provided with the air blow nozzles 41 and 41 which inject an air blow, Heating the first and second stampers above the softening temperature of the object to be processed by the first and second temperature adjusting units; Pressing the first and second stampers heated above the softening temperature to both surfaces of the object to be press-molded; After the press molding, the distance between the first stamper and the second stamper between the stamper is widened to a predetermined distance, and the air blow is blown from the air blow nozzle toward both surfaces of the first and second stampers and the object to be processed. To do that, When injecting the air blow, cooling the first and second stampers to a different first and second target temperature below the softening temperature, respectively, by the first and second temperature regulating units; Cooling the first and second stampers to a third target temperature below the first and second target temperatures when the air blow is continuing; Press molding method comprising a. First and second stampers 35a and 35b for press-molding the plate-shaped thermoplastic processing object 2 and First and second temperature regulating sections 34a for heating and cooling the first and second stampers. 34b), a temperature control device 60 for controlling the temperature of the first and second temperature regulating units to a target temperature, and air blow nozzles 41 and 41 for injecting an air blow, both surfaces of the object to be processed. A press-molding apparatus (1) for pressing and pressing the first and second stampers in to press-molding, and then releasing the object from the first and second stampers by using the air blow from the air blow nozzle, The temperature control device, Heating control means for heating and controlling the first and second stampers to be a target temperature equal to or higher than the softening temperature of the object when the press molding is performed by pushing the first and second stampers onto the object; , When the said press molding is performed, it is equipped with the cooling control means which performs cooling control so that the said 1st and 2nd temperature control parts may become the 4th target temperature below the said softening temperature, When the air blow nozzle injects the air blow, the distance between the stamper between the first stamper and the second stamper is widened to a predetermined distance, the heating control means reheats, and the first and second temperature controllers The heating control is performed such that the fifth and sixth target temperatures differ from each other below the softening temperature, and then the cooling control means is reheated, and the first and second temperature regulating units are provided in the fifth and the fifth temperature. Press-molding apparatus which carries out cooling control so that it may become 7th target temperature below 6 target temperature. First and second stampers 35a and 35b for press-molding the plate-shaped thermoplastic processing object 2 and First and second temperature regulating sections 34a for heating and cooling the first and second stampers. 34b) and the press molding method of the press molding apparatus provided with the air blow nozzles 41 and 41 which inject an air blow, Heating the first and second stampers above the softening temperature of the object to be processed by the first and second temperature adjusting units; Press-molding the first and second stampers heated above the softening temperature by pressing both surfaces of the object to be processed; Cooling the first and second stampers to a fourth target temperature below the softening temperature when the press molding is performed; After the press molding, the distance between the first stamper and the second stamper between the stamper is widened to a predetermined distance, and the air blow is blown from the air blow nozzle toward the surface where the first and second stampers are in contact with the object to be processed. To do that, When injecting the air blow, heating the first and second stampers to the fifth and sixth target temperatures different from each other, below the softening temperature, by the first and second thermostats; When the air blow is continued, the first and second temperature controllers cool the first and second stampers to a seventh target temperature below the fifth and sixth target temperatures. Press molding method comprising the step.

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