TWI353294B - - Google Patents

Description

</ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; This is incorporated herein by reference for reference. The present invention relates to a hot press forming apparatus for pressing a stamper to transfer a pattern of a fine shape to a surface of a thermoplastic sheet and a die system for use thereof. [Prior Art] A conventional hot press forming apparatus is an optical component or a highly creative panel formed on a surface having a finely shaped pattern, for example, a light guide plate or a diffusion plate for a backlight of a liquid crystal display, and a lens or a optical disk substrate. The construction of a mold for performing such hot press forming is disclosed, for example, in Japanese Laid-Open Patent Publication No. 2004-74769. According to the disclosure, a plate-shaped stamper is mounted on a heating and cooling plate having a heating and cooling mechanism, and the stamper is heated and cooled by heating the cooling plate, and then the stamper is pressed to the thermoplastic by heating the cooling plate. The surface of the resin board. DISCLOSURE OF THE INVENTION [Problem to be Solved by the Invention] The height of the concavities and convexities of the shape pattern transferred by conventional hot press forming is generally several micrometers Um) to several tens of micrometers (_). On the other hand, the thickness of the thermoplastic resin sheet as the material to be processed has an unevenness of about ±0 mm. Further, the size of the mold for mounting the stamper, the thickness of the stamper itself, and the flatness also have an unevenness of about 0.01 to 0.05 mm. ^^^ΙΤ^'74769 This. : The mold in the hot state is pressed against the material to be processed. After heating the cold mold to cool the stamper, the turning is processed. Therefore, the heating of the cooling plate causes warpage caused by thermal distortion during heating and cooling. Due to the above phenomenon, the force distribution of the contact surface between Chengke and the material to be processed is uneven, resulting in a situation in which a part of the stamper presses the material to be reinforced at a desired pressure. As a result, a defect in which the pattern is not completely transferred (untransferred) is generated at the surface of the processing table P. And 'when the material to be processed is a thin sheet material of extremely thin thickness (for example, i-face,), the pressure distribution on the contact surface of the right dies and the material to be added is different, and the thickness direction of the material to be processed is compressed. The amount of deformation will vary, and the amount of deformation in the direction of the surface of the material being processed will also vary locally. The result 'is easily produced (4) or bent on the material to be processed. In order to solve these problems, several countermeasures have been conceived. For example, the load is greater than the force required for the transfer to apply pressure. Or, increase the heating temperature of the domain mold, = reduce the surface waste force required for transfer. Or, the extension of the heated surface is based on the processing material, and the softening layer of the material to be processed is transferred to a low transfer. However, these countermeasures not only increase equipment cost, running cost, production time, but also excessive temperature. The face pressure is applied to the material to be added, so that the expansion of the material is increased when the ancestors are finished. After the forming is completed, the side of the material to be swollen needs to be post-processed. In particular, when # is added as 験 (4), it will increase its interesting or curved. Accordingly, an object of the present invention is to uniformize the state of contact between a thermoplastic sheet and a stamper in the hot press forming in which the uneven pattern is transferred to the surface of the thermoplastic sheet. [Technical means for solving the problem] According to an embodiment of the present invention, the stamper 142 is pressed to transfer the shape pattern to the surface of the workpiece (such as a difficult sheet). 100 includes a pressing device having a carrier plate 1 2, a sliding plate 1〇4, and a driving device 106 for driving the sliding plate; and a module 112, 114 mounted on the sliding plate or the carrier plate And including a frame body 12, a bottom plate (for the hot plate 136 or the heat insulation plate 326), an elastic body (for the rubber members 138, 328), a flexible top plate 140, and a heating and cooling mechanism (for the hot plate 136 or the heat exchange tube 33) The inside of the frame body 120 is an elastic storage space. The bottom plate is inserted into the frame 12, and the volume of the storage space is slidable relative to the frame. The elastic body is housed in the storage space. When the bottom plate is slid in such a manner that the storage space is small, the flexible top plate 14 is mounted on the frame 120 and has an inner surface facing the storage space and an outer surface of the support stamper. Using a heat medium fluid to the stamper 142 Further, when the bottom plate is slid in such a manner as to reduce the volume of the storage space, the flexible top plate 140 is deformed outwardly by the elastic force of the compressed elastic body on the inner surface. In a preferred embodiment, the elasticity The rubber member or the resin member of the system, the rubber member or the resin member is filled in the housing space without a gap. The rubber member or the resin member has the i-th region in the vicinity of the region in contact with the inner surface of the casing and the inner portion of the first region. In the second region, the hardness of the first rubber member or the 1353294 1 tree member member filled in the first region is higher than the hardness of the second rubber member or the second resin member filled in the second region. In a preferred embodiment, The heating and cooling mechanism is formed in the bottom plate, and the heat medium fluid passes through the inside of the hot plate. In the barrier, the elastic system rubber member or the resin member, the rubber member or the resin member is not filled in the storage space. Further, the rubber member or the resin member There is a second region in the vicinity of the inner region of the inner surface of the frame and a second region on the inner side of the first region, and the second region is mixed to improve thermal conductivity. The additive is composed of a rubber material or a resin material, and the second region is composed of a rubber material or a resin material in which the additive is not mixed or the amount of the additive is less than the second region. In a preferred embodiment, the heating and cooling mechanism The heat medium is passed through the heat exchange tube inside the elastomer, and the heat medium fluid passes through the inside of the heat exchange tube. In this case, the elastic system rubber member or the resin member, the rubber member or the secret grease member is filled in the storage space without a gap. The rubber member or the resin member has a first region formed in the vicinity of a region in contact with the inner surface of the casing and a region in contact with the hot plate, and a region surrounded by the second region and the inner surface of the top plate In the second region in the vicinity of the region, the hardness of the j-th rubber member or the first resin member filled in the second region is higher than the hardness of the second rubber member or the second resin member filled in the second region. Alternatively, the elastic rubber member or the resin member, the rubber member or the resin member is filled in the housing space without a gap. Further, the rubber member or the resin member has a region of 1353294 near the region in contact with the inner surface of the casing and a region in contact with the hot plate, and a region surrounded by the first region and the surface of the top plate. In the second region near the region, the second region is composed of a rubber material or a resin material mixed with an additive for increasing the number conductivity, and the amount of the additive in the first region is less than that of the second region. m material composition. Preferably, only the order is changed to the outer side of the elastic deformation region, and the outer surface of the top plate is supported. The elastic deformation region is the region where the surface of the top plate is deformed by the elastic elastic force and deformed outward. The thermal overmolding device affixes the shape pattern to the surface of the thermoplastic sheet, which is disposed in such a manner that all of it is outside the elastically deformed region. In the case of only %, the compression is supported by the outer surface of the top plate in such a manner that all the outer edges are in the elastic deformation region, and the elastic deformation region is deformed outwardly after the elastic force of the elastic body in the top plate. The area that is formed. The thermoforming comprises a spacer having a plate thickness substantially the same as that of the thermoplastic sheet and consisting of a rigid body 'fixing the spacer such that when all outer edges of the thermoplastic sheet are inside the elastically deformable region, the spacer All of the outer edges are on the outer side of the outer edge of the elastic deformation region and the inner edge of the spacer is biased outwardly from the outer side of the thermoplastic sheet. According to the present invention, the shape pattern is transferred by pressing the stamper 142. The hot press forming apparatus 100 on the surface of the workpiece 2 (10) (such as a thermoplastic plate) comprises a shock absorber having a carrier plate 1 2, a sliding plate (10), and a drive for driving the sliding plate; and a module 112 and 114 are mounted on a sliding plate or a carrier plate, and include a frame body 12G, a bottom plate, a lining alloy 1353294 member, a top plate 140, and a heating and cooling mechanism (which is a hot plate 136 or a heat exchange tube '330). The housing 120 has a housing space (the bottom plate (for the hot plate 136 or the heat shield 326) is inserted into the inside of the housing" and is slid in such a manner that the volume of the housing space can be changed. The low-point alloy member is housed in the storage space and has a melting point lower than the softening temperature of the thermoplastic sheet. The top plate 140 is mounted to the frame body and has an inner surface facing the storage space and supporting the outer surface of the stamper. The heating and cooling mechanism uses a heat medium fluid to heat and cool the stamper. Further, when the volume of the storage space is reduced by the hot plate, the flexible top plate is subjected to the force from the low-melting-point alloy member on the inner surface to be deformed outward. According to an embodiment of the present invention, a mold system for a hot press forming apparatus includes modules 112, 114 mounted on a sliding plate or a load plate of a pressing device, and the press forming device is used to press the stamper The relief pattern is transferred to the surface of the thermoplastic sheet. The module comprises: a frame body 12〇 having an elastic body storage space therein, and a bottom plate (which is a hot plate 136 or a heat insulation plate 326) inserted into the interior of the frame body so as to make the volume of the storage space By changing the manner, the elastic body (for the rubber members 138, 328) is accommodated in the storage space, and is compressed when the bottom plate is slid in a manner that reduces the volume of the storage space; the flexible top plate 140, which is mounted on the frame and has an inner surface facing the receiving space and supporting the outer surface of the stamper; and a heating and cooling mechanism (for the hot plate 136 or the heat exchange tube 330), which uses the heat medium fluid to perform the stamper Heating and cooling. Further, when the bottom plate slides in such a manner as to reduce the volume of the storage space, the inner surface of the flexible top plate is deformed outward by the elastic force of the compressed elastic body. [Embodiment] 10 1353294 Hereinafter, a hot press forming apparatus according to an embodiment of the present invention will be described with reference to the drawings. • Fig. 1 shows the overall construction of the hot press forming apparatus of the first embodiment of the present invention. The hot press forming apparatus 100 is constructed as a combination of a general pressing apparatus and a mold system for hot press forming. The universal pressing device includes a carrier fixed to the ground, a plate 102, and a sliding plate 104 disposed above the carrier plate 102. The slide plate 104 is driven by the driving device 106, thereby moving up and down along a post (not shown) so as to approach or away from the carrier plate 102. The drive unit (1) 6 may include, for example, a servo motor that drives the slide plate 104, and a controller that drives and controls the servo motor. In the case of the drive unit 1〇6, it is also possible to use a drive unit that uses hydraulic pressure to actuate the drive unit instead of the drive unit using the servo motor. The mold system includes upper and lower modules 112 and 114. The upper and lower modules 112 and 114 are mounted on the carrier plate 1〇2 and the slide plate 104 so as to face each other. 2 is an enlarged view of a portion of the two modules 112, 114 of the first embodiment. Since the two modules 112 and 114 have substantially the same configuration, the above module 112 is taken as an example. Please refer to Fig. 1 and Fig. 2 for the configuration. The upper module 112 includes a base plate 116, a cooling plate 118, a frame 120, a frame supporting mechanism 122, a hot plate 136, a rubber member 38 as an elastic body, a flexible top plate 140, and a frame 126. The base plate 116 has a substantially rectangular plate shape and is fixed to the slide plate 1〇4. The cooling plate 118 is substantially rectangular and is fixed to the center of the base plate 116. A plurality of water holes 119 are formed in the cooling plate 118, and the water holes 119 are communicated. The water supply 11 1353294 one end of the hole 119 is connected to the cooling water supply port to supply the cooling water, and the cooling water flows out from the cooling water return port connected to the other end of the communicating water hole, thereby keeping the temperature of the cooling plate 118 constant. Thereby, the heat of the hot plate is prevented from being transmitted to the side of the base plate 116. The frame support mechanism 122 is fixed to the cooling plate us. The frame supporting mechanism 122 and the frame 120 have a substantially rectangular cylindrical shape. The frame support mechanism 122 includes a nest 128 and a spring 130' stagnation 128 to support the frame 120 via a spring 130. The frame 120 is pressed downward by the spring 130. An opening is formed in the bottom of the frame supporting mechanism 122, and the hot plate 36 is inserted into the frame supporting mechanism 122 and the frame 120 from the opening. The frame 126 is generally rectangular in shape and is secured to the base plate 116. A sealed rack 132 having a vacuum liner is mounted on the top surface of the frame 126. When the frame is lowered and the sealed rack 132 abuts against the sealed rack 132 of the lower module 114, a vacuum chamber is formed inside the sealed rack. The vacuum chamber is vacuumed by a vacuum pump (not shown) and opened to the atmosphere by an open air valve. The hot plate 136 is generally rectangular in shape and is fixed to the cooling plate 118. The hot plate 136 is a heating and cooling mechanism, and a plurality of water holes 141 as heat medium fluid passages are formed therein. The water holes 141 are formed, for example, parallel to each other along the longitudinal direction of the hot plate and equally spaced from one end surface of the hot plate 136 to the other end surface, and the both ends are sealed by a sealing plug 143. The water holes 141 are connected by the ribs 145 provided on both sides in the longitudinal direction of each of the water holes 141. When heating is performed, the high-temperature heat medium fluid (steam, high-temperature oil) supplied from the heat medium supply port connected to the manifold 145 is discharged from the other manifold 145 through the respective water holes 141. Thereby, the rubber 12 1353294 member 138 is heated. When cooling is performed, the low temperature heat medium (cooling water, • low temperature oil, etc.) passes through the respective water holes 141 in the same path to cool the rubber member 138. An insulating slit 147 is formed inside the manifold H5 of the hot plate 136 to prevent heat diffusion from the manifold 145. The hot plate 136 is inserted into the frame 120, and the inner side surface of the frame 120 is in close contact with the outer surface of the hot plate U6. The inner side surface of the frame body 120 and the outer side surface of the hot plate 136. In the close contact state, the hot plate 136 is movable in the upward and downward directions (in the thickness direction of the processed material) with respect to the frame body 120. In other words, the frame 120 is movable in the upward and downward directions with respect to the hot plate 136. That is, the hot plate 136 slides relative to the frame 12 to thereby function as a bottom plate. The flexible top plate 140 is fixed to the top surface of the casing 12 by a fixing mechanism such as a bolt. The top plate 140 is fixed so that the top surface opening portion 121 of the frame body 12 is sealed. The thickness of the top plate 140 can be, for example, about 0.5 to 3 mm. The housing 120 has a housing space 124 formed therein by the top plate 14A, the hot plate 136, and the side walls of the frame 12b. A rubber member 138 is housed in the storage space 124. The storage space 124 is substantially sealed and does not leak the rubber member 138. The hot plate 136 slides relative to the frame 120, and accordingly, the volume of the sealed storage space 124 changes. The rubber member 138 is housed in the housing space 124 formed by the hot plate 136, the frame 120, and the top plate 140. For example, the rubber member 138 may be filled in the storage space 124 without a gap. The rubber member 138 is a rubber member for improving thermal conductivity. The material of the rubber member 138 will be described below. Further, in the present specification, an example in which a rubber member is used as an example of the elastic member 13 1353294 is mainly described. However, other elastomers may be used instead of the rubber, and for example, a synthetic resin or the like may be used. A fluororesin can also be used as an example of a synthetic resin. Among the fluororesins, for example, polytetrafluoroethylene (PTFE) can be used. PTFE has the physical properties shown below. Heat resistance: 260 ° C Tensile strength: 13.7~34.3 MPa Extension: 200-400% Hardness: Xiao D50~55 ® Flexural modulus: 550 GPa Tensile modulus: 400~550 GPa Thermal conductivity: 0.25 W/ A thinner stamper 142 is attached to the outer surface (top surface) of the head of the mk 杈 group 112. As a method of determining the stamper 142, for example, vacuum adsorption (omitted from the illustration of the vacuum pump used for this purpose) and a fixing jig can be used, which is processed by the outer surface of the top plate 14 The trough is implemented by a groove, and the fixing jig is disposed on the outer surface of the top plate 140. Fig. 3B is an explanatory view showing a state of pressurization when the workpiece 2 is pressed, and Fig. 3 is a cross-sectional view taken along line A-A of Fig. 3A. As shown in FIG. 3, the size of the stamper 142 is larger than the opening portion 121 of the frame 12, L, and all the outer edges are outside the opening 121, and are closely attached to the top plate. The body 12 is opened by the π portion 121, and is further set such that all its outer edges are outside the opening portion (2). Next, the action of stamping the material to be processed 2 (for example, the thermoplastic 1353294 plate) will be described with reference to Fig. 1 to Fig. 1 . Furthermore, here, the operation of the upper and lower modules ιΐ2, ιι4 will be described, and the temperature control will be described below: When the upper module 112 is set under the module shown in the figure, &quot; When the time is lowered, the upper and lower stampers 142 and 142 are in contact with both surfaces of the workpiece 200 (pressure start state). The state at this time is the left side of FIG. 3B. When the self-pressing 丨 4 2, 142 is in contact with both sides of the workpiece 200, and then the upper module .112 is lowered and the pressing force is applied, the frame 120 is also resistant to the pressing force of the spring 13 而. Retreat to the side of the base plate 116. At the same time, the rubber member 138 receives the pressing force from the heat insulating plate 136 and the repulsive force from the material to be processed 200, and the volume thereof is reduced, and the internal pressure is increased. That is, the rubber member 138 is compressed. Next, the hot plate 136 advances relative to the frame 120 by the portion of the rubber member 138 that is compressed and reduced. At this time, the compressed rubber member 138 generates a uniform pressing force by elasticity. Therefore, when the rubber member 138 is filled in the accommodating space 124 formed by the frame body 12, the hot plate 136, and the top plate HO without a gap, the rubber member 138 is pressed by the pressure, and the space is accommodated in the accommodating space 124. The pressure will rise evenly. At this time, the frame body 120 is pressed against the top plate 14A by the pressing force of the spring 13, so that the rubber member 138 does not leak from the gap between the top plate 14A and the frame 12b. Here, except for the flexible top plate 140, all the inner walls forming the accommodation space 124 are rigid bodies which are not caused by the elastic force of the compressed rubber member 138, and the flexible top plate 140 is subjected to compression on the inner surface. The elastic force ' of the rubber member 138 is thus deformed in such a manner as to expand outward. Here, the region of the elastic deformation 15 in which the flexible top plate 140 is deformed to expand outward is substantially the same as the opening portion 121 of the frame 120. When the bell forming as shown in Fig. 3B is performed, the upper and lower stampers ι 42 and 142 are pressed against the upper and lower sides of the workpiece 2GG (e.g., thermoplastic sheet) which is a sheet of thermoplastic resin. At this time, all the outer edges of the workpiece 2 are located outside the opening portion 121 of the frame 120, so that the flexible top plate 140 is expanded outwardly to form an elastic deformation region of the shape of the outer surface of the workpiece 120. The second side of the edge. As a result, the stampers 142, 142 are not locally deformed at the outer edge portion of the workpiece 200 with the % of the flexible top plate 140, so that the stamper 142, 142 pairs are strengthened compared with the first step. The distribution of the forming pressure applied to the surface of the material 2 becomes more uniform. Furthermore, in the case of using this method, it is impossible to uniformly pressurize the material 2 (8) of the frame region around the elastic deformation region, wherein the flexible top plate 14 in the elastic deformation region expands outwardly into the frame region The flexible top plate 140 does not expand outward. Therefore, it is sometimes impossible to transfer the pattern to a part of the frame region with high precision. At this time, the processed material of the frame region can also be trimmed after the forming. In FIG. 3, the description of the case where the size of the workpiece 2 is larger than the opening 121 of the casing 120 has been described. FIG. 4 is an explanatory diagram showing the case where the size of the workpiece 2 is smaller than the opening 121 of the casing 120. . That is, Fig. 4B is an explanatory view showing a state of pressurization when the material to be processed 200 is smaller than the material 2 of the opening 121 of the casing 120, and Fig. 4a is a cross-sectional view taken along line A-A of Fig. 4B. As shown in Fig. 4A, first, as in Fig. 3A, the stamper 142 is in close contact with the outer surface of the = plate 40. The size of the workpiece 2 is smaller than the opening 1 of the casing. Therefore, the material to be processed is placed on the stamper 142 so that all the outer edges of the workpiece 200 are in the opening (2). At this time, the rigid body spacer 210 is fixed to the _ 142 around the material to be processed 200. The inner shape (inner edge) of the rigid body spacer 210 is slightly larger than the outer edge of the material 2 to be processed. That is, there is a gap s between the workpiece 2 〇〇 and the rigid body spacer. The outer side shape (outer edge) of the rigid body spacer 210 is larger than the opening of the frame body 12''. p m. Further, the thickness of the rigid spacer 21 may be substantially the same as the thickness of the material to be processed 200, or may be slightly thicker than the thickness of the material to be processed. For example, the maximum thickness of the material to be processed may be about the thickness of the iron ι leg. The material of the rigid spacer 210 may be the same material as the top plate 140 or the stamper 142, such as SUS (stainless steel). According to the thickness of the top plate i4〇, the stamper (4), and the material to be processed 200, the gap between the rigid body spacer 21〇 and the material to be processed and the thickness of the rigid body spacer 21〇 are adjusted, thereby when the workpiece material 200 is processed. When the pressurization is performed, the spacer 21 is also pressurized, so that the entire rubber member 138 is uniformly compressed in a sealed state. That is, as in the case of Fig. 3, the stamper 142 can be prevented from being locally deformed, so that the material to be processed 200 can be uniformly pressurized. Here, if the heat of the hot plate 136 is quickly transmitted to the top plate and mounted on the top plate 14, it is preferable that the thickness of the rubber member 138 is thin. On the other hand, when the rubber member 138 is compressed, it is considered to be 1353294 from the viewpoint of the effect of squeezing the top plate 14 with a uniform pressure. Therefore, it is preferable that the rubber member 138 has a thick plate thickness of the rubber member 138. The plate thickness can be, for example, about 2 to 5 mm.夂’ For example, you can use polythene rubber bamboo

From ..., Kenting version of Yang 5, • Increased mixing of the secret additives, the thermal conductivity of the poly-stone rubber will increase, but its hardness will decrease, 'the oxygen will turn into a turn or clay . Further, when using ρ coffee instead of rubber material, it is not necessary to mix the additives as described above to adjust the thermal conductivity, but it is also possible to mix the additives. When a rubber material having a low hardness is used as the rubber member 138, the rubber member 138 may leak from a small gap between the outer surface of the hot plate 136 and the inner surface of the frame 120 when the pressurization is performed. In order to prevent leakage of the rubber member, a rubber material having different hardnesses from each other can be combined as the rubber member 138 in the following manner. For example, Fig. 5B is an explanatory view of the module 1H in the case where rubber materials of different materials are combined in the rubber member 138, and Fig. 5A is a cross-sectional view taken along line A-A of Fig. 5B. As shown in the figures, the peripheral region 139A of the substantially rectangular rubber member 138 is formed of a high-hardness polyoxyxene rubber (for example, a Shore hardness of A70 or more), or a high-heat-conducting polyoxyethylene rubber having a low hardness. The inner region 139B surrounded by the high hardness polyoxyethylene rubber is formed. In the hard rubber material of the peripheral region 139A, the amount of the additive may be less than the hardness of the rubber material in the inner region, or the additive may not be mixed at all. Thereby, when the pressurization is performed, the rubber member 138 can be prevented from entering between the frame body 120 and the hot plate 136 or the like. 18 1353294 ^The thermal conductivity of the rubber member 138 constituting the peripheral region 139A may also be lower β. When the rubber member 138 constituting the peripheral region 139 is low in scale, heat can be prevented from being transferred from the hot plate 136 to the frame 120, thereby The thermal expansion and thermal contraction of the frame 12 are suppressed. Further, a synthetic resin material may be used instead of the rubber material to realize the constitution as shown in Fig. 5. That is, the peripheral region 139 can also be composed of a synthetic resin material having a high hardness, and the region can also be composed of a low-hardness composite material. Further, the rubber member 138 may be replaced with a composite rubber material and a synthetic resin material. Also, 卩 周 周 light 139 Α can also be composed of fluororesin, and the inner region 139 Β can also be composed of a rubber material. Further, as described above, the rubber members having different hardnesses are combined as the rubber member 138, and instead, a ring-shaped ring may be provided at a portion where the rubber member 138 is leaked during pressurization. For example, as shown in Fig. 5C, an O-ring 230 may be provided on a portion of the frame 12 that is in contact with the top plate 140 and a portion of the outer surface of the hot plate 136 that is in contact with the inner surface of the casing 12, respectively. Further, as the material of the rubber member 138, a fluororubber having a wear resistance and a mechanical strength superior to that of a silicone rubber can be used. Fig. 6 shows the overall construction of a hot press forming apparatus according to a second embodiment of the present invention. The second embodiment differs from the first embodiment mainly in the heating and cold portion mechanism of the rubber member, and is mostly the same in other respects. Hereinafter, the differences will be mainly described, and the description of the same portions as those of the first embodiment will be omitted. 1353294 In this embodiment, the upper module 312 and the lower module 314 are substantially the same. Therefore, the above module 312 is taken as an example for description. The upper module 312 includes a base plate 116' spacer 322, a frame 120, a spring 130, a heat shield 326, a rubber member 328, a heat exchange tube 330, a flexible top plate 14A, and a frame 126. The spacer 322 is substantially rectangular and is fixed to the base plate 116. The frame 120 is attached to the spacer 322 via a spring 13 。. The cooling plate 118 is fixed to the partition member 322. The heat shield 326 is generally rectangular in shape and is fixed to the cooling plate 118. _ The outer side of the heat shield 326 is in close contact with the inner side surface of the frame 120. The heat shield 326 blocks heat transfer between the rubber member 328 and the cooling plate 118. For example, a heat resistant epoxy resin can be used as the material of the heat insulating plate 326. In the present embodiment, as in the first embodiment, the housing space 124 is formed by the top plate 14A, the heat insulating plate 326, and the side walls of the frame body 12. A rubber member 328 is housed in the housing space 124. As the rubber member 328, the same material as that of the first embodiment can be used. In the present embodiment, the heat exchange unit 330 is inserted through the storage space 124. Further, the rubber member 328 is filled with a space other than the heat exchange tubes 33 in the storage space I24 without a gap. The heat is changed again: the length direction of the storage space of the 330 is parallel to each other and equally spaced. Both ends of the hot parent change 33G are disposed outside the frame 120 by passing through the frame 12 (). [5 manifolds 342, 342 are connected. Moreover, when heating is performed, if the heat miscellaneous fluid (vapor, high temperature oil, etc.) is supplied from the heat miscellaneous connected to the manifold 342, the high temperature heat medium Zhao passes through the heat exchange tube 330 and is The manifold 342 is discharged. Thereby, the rubber member 328 is heated. When the field enters the cold portion, the low temperature heat medium fluid (cooling water, low temperature oil, etc.) passes through the heat exchange tube 330 in the same path of 20 1353294 to cool the rubber member 328. Further, in a state in which the inner side surface of the casing 120 is in close contact with the outer surface of the heat insulating panel 326, the heat insulating panel 326 can be moved upward and downward (in the thickness direction of the workpiece) with respect to the casing 120, thereby accommodating The volume of the space 124 changes, which is the same as the first embodiment. Further, in the present embodiment, as in the first embodiment, 'the workpiece 2 〇〇 having a size larger than the opening 121 of the frame 120 can be punched'. The rigid spacer 210 can also be used to make the size smaller than the frame. The workpiece material 200 of the opening portion 121 of 120 is pressed. Next, the material and configuration of the rubber member 328 in the second embodiment will be described. For example, Fig. 7A illustrates the illustration of the module 314 when a rubber material of a different material is combined in the rubber member 328. As shown in FIG. 7A, a region 329A of the substantially rectangular rubber member 328 that is in contact with the frame 120 and the heat shield 326 may be made of a high-hardness polyoxymethylene rubber, and other regions, that is, rubber members 328. The central region and the vicinity 329B of the surface in contact with the inner surface of the top plate 140 may also be composed of a high-heat-conducting polyoxo rubber having a low hardness. That is, in the storage space formed by the top plate 140, the frame 120, and the heat shield 326, the high-hardness conductive polyoxyethylene rubber and the frame 120 and the heat shield 326 may be disposed with high hardness. Polyoxyethylene rubber. In the case of the rubber material having a high hardness in the region 329A, the amount of the additive may be less than that of the rubber material having a low hardness in the region 329B, or the additive may not be mixed at all. Thereby, when the pressurization is performed, the rubber member 328 can be prevented from entering between the frame body 120 and the heat insulating plate 326 or the like. 21 1353294 The rubber member 328 constituting the vicinity 329A of the surface in contact with the frame 120 and the heat shield 326 may have a low thermal conductivity. In this case, heat can be prevented from being transmitted from the heat exchange tube 330 to the frame 120, whereby the thermal expansion and heat shrinkage of the frame 12 can be suppressed. The same as in the case of the first embodiment, a synthetic resin material may be used instead of the rubber material to realize the constitution as shown in Fig. 7. That is, the vicinity 329A of the surface in contact with the frame 12A and the heat insulating plate 326 may be composed of a synthetic resin material having a high hardness, a central portion of the rubber member 328, and a vicinity 329B of the surface in contact with the inner surface of the top plate 14A. It can also be composed of a synthetic resin material having a low hardness. Further, the rubber member 328 may be replaced by a combination of a rubber material and a synthetic resin material. That is, the peripheral region 329A may be composed of a fluororesin, and the region 329B in the vicinity of the central region and the face in contact with the inner surface of the top plate 140 may be composed of a rubber material. Further, as shown in Fig. 7B, a ring-shaped ring may be provided. That is, as shown in the figure, a 〇-shaped ring may be provided at a portion where the rubber member 328 is leaked during pressurization. For example, a portion of the outer surface of the frame 120 that is in contact with the inner surface of the top plate 140 and the outer surface of the heat insulating plate 326 that is in contact with the inner side surface of the frame 120 may be provided with a ring-shaped ring 230, respectively. The complicated hot plate makes it easy to enlarge the module. Next, a molding operation in the hot press forming apparatus 100 of the first and second embodiments of the present invention will be described with reference to Fig. 8 . Fig. 8A shows a change in the position of the sliding plate in one of the forming operations, Fig. 8B shows a change in the pressing force of 22 1353294 in one cycle of the forming operation, and Fig. 8C shows a change in the temperature of the top plate in the form of a crane. 8D represents the pressure change in the vacuum chamber in one of the molding operations. First, the slide plate 104 is at the upper limit position S1. Further, the material to be processed 2 (e.g., a thermoplastic plate) is placed on the stamper 142 of the lower module 114 during the period until time t1. At time ti, the position of the servo press is controlled, and the slide plate 1〇4 starts to descend. Then, the sealing racks 132 on the top surfaces of the frames 126 and 126 of the upper and lower modules 112 and 114 abut each other, and when the sliding plate 1〇4 is lowered to the position S2 where the vacuum chamber is formed, the sliding plate 1〇4 The descent is temporarily stopped (time t2). At time t2, the vacuum chamber is started to be evacuated to a vacuum v state, and the supply of the high temperature heat medium fluid to the hot plate 136 (the heat exchange tube 33A in the second embodiment) is started. During the vacuum suction until time T3, the stampers 142, 142 do not pressurize the workpiece 2?. The reason for this is that air is prevented from entering between the workpiece material 200 and the stampers 142, 142. When the time t3 is reached, the pressing force of the servo press is controlled, and the sliding plate 104 starts to fall again. The time t3 is the time when the vacuum in the vacuum chamber reaches the vacuum degree p2 suitable for the transfer forming from the atmospheric pressure P1. The degree of vacuum p2 can be, for example, -90 KPa or less. Next, the upper and lower stampers 142 and 142 are pressed against the workpiece 2 by a preliminary pressing force u. The upper and lower stampers 142, 142 are pressed against the workpiece 200 by the preliminary pressing force L1, whereby the hot plate 136 (the heat exchange tube 33 in the second embodiment), the rubber member 138, and the top plate 140 are used. The stamper 142 is in close contact with each other to promote heat conduction of the hot plate 136 (the heat exchange tube 330 in the second embodiment). For the preliminary pressing force L1, for example, the surface pressure applied to the pressing surface of the workpiece 200 is about 1 MPa. When the coffee plate t4 is reached, the sliding plate 1G4 is stepped down, and the stamper is controlled in such a manner as to reach the transferable pressing pressure L2, and the temperature of the top plate 140 reaches the transferable temperature H2 time. The transfer pressing pressure u is set, for example, so that the pressing surface applied to the material 2GG to be applied is 4 to 6 runs. If the material to be processed 200 is a material of polyacrylonitrile methacrylate (pMMA, (10) methacrylate), the transferable temperature H2 can be, for example, ^初~ 〇&gt;-^

Further, the pressing of the heating H state is continued for a predetermined time T from the time t5 when the pressing force reaches the transfer pressing pressure L2. At the time t6 of the predetermined time T, the supply of the low-temperature heat medium fluid to the hot plate 136 (the heat exchange tube 330 in the second embodiment) is started, and the cooling of the top plate and the stamper M2 is started. The predetermined time τ is appropriately determined according to the material to be added or the shape of the stamper so as not to cause a transfer abnormality such as untransfer. The top plate 140 and the surface 142 are cooled, and the temperature reaches "the temperature t of the second temperature t7", the atmosphere of the vacuum chamber is opened, and the pressure in the vacuum chamber is restored to the atmospheric pressure pi. When the material is added as PMMA material, it can be taken off. The temperature H1 of the mold can be, for example, 40 to 70 ° C. μ When the pressure in the vacuum chamber (4) returns to the atmospheric pressure ρ (7), the position control is performed again, and the sliding plate starts to rise. Then, the sliding plate ι〇4 returns. To the upper limit position S1, the material to be processed 2 can be taken out. Fig. 9 is an example of the fine surface pressure distribution when the surface of the slitting device of the above embodiment is pressed by the processed material. (4) Fine corresponds to 6 24 1353294 MPa The load is a distribution of the dust potential of the molding surface when the material to be processed (the 256-position 159 mm, the thickness 〇 2 legs) of the acrylic body 12 is smaller than the opening portion 121 of the frame 12, and the rubber surface is not used in Fig. 9A. The distribution of the waste force of the forming surface in the previous module, FIG. 9B is the state shown in FIG. 4 in the first embodiment (using a rigid body spacer, the rubber component is a 2 inm thick polywei rubber system) ^ molding surface pressure m Figure 9 in 'Yen The thicker part indicates that the pressure is higher, and the lighter part indicates that the pressure is lower. As shown in Fig. 9A, the molding surface pressure of the portion 25 of the workpiece to be processed is relatively uneven, that is, the portion of the material to be processed is 25〇. The molding surface near the outer edge is stronger than the molding surface pressure in the region other than the outer portion of the reinforced material portion 25G, which is lower than the molding surface pressure near the outer edge. In contrast, as shown in Fig. 9B, in the material to be processed The rigid body spacer portion 26G is present around the circumference of the crucible. Further, according to the present embodiment, the pressure distribution of the molding surface of the workpiece portion 250 is substantially equal. The low-lying filament of the softening temperature of the material replaces the component. The so-called hard-point alloy system utilizes a well-known alloy of the following properties, which is a metal of the same type (Pb(8), Bi(8), Sn (tin), Cd. (tin), in (copper), etc. are alloyed in combination to lower the melting point. According to the above-described embodiment, the stamper can be pressed against the surface of the material to be processed. - pressure of the compressed material is processed 'can be reduced internally generated the non-uniform internal strain of the workpiece, and can reduce the material is bent or warped.

r· C

i&gt;' W 25 1353294 Close to non-component _, the hybrid exhibits characteristics close to the non-collapsed body, and the pressure of the pressing surface is further reduced by the hydrostatic effect, and the elastomer is also reduced Uneven pressure caused by the influence of unevenness in physical f (hardness or elastic modulus). Further, since only the compressive stress is generated inside the rubber member, the body _ caused by the tensile stress can be prevented. Moreover, since the rubber member and the test, and the rubber member and the Weizhi Yulin can be worn, the wear of the rubber member can be prevented.

The embodiments of the present invention are intended to be illustrative of the invention, and the scope of the invention is not limited to the embodiments. The present invention can be implemented in other various aspects without departing from the spirit and scope of the invention. For example, the present invention is not limited to the case where the shape pattern is transferred to both sides of the material to be processed, and can be applied to the case where the shape pattern is transferred only to one side. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows the overall configuration of a hot press forming apparatus according to a first embodiment of the present invention. Figure 2 is an enlarged view of two modules of the first embodiment. Fig. 3 is an explanatory view showing a state of pressurization when the material to be processed is pressed. Fig. 4 is an explanatory view showing a state of pressurization when the material to be processed is pressed. Fig. 5 is an explanatory view showing the leakage preventing structure of the rubber member. Fig. 6 shows the overall configuration of a hot press forming apparatus according to a second embodiment of the present invention. Fig. 7 is an explanatory view showing the leakage preventing structure of the rubber member. Fig. 8 is an illustration of a molding operation description. Fig. 9 is a view showing an example of measurement results of the pressure distribution of the molding surface of the material to be processed. 26

139A, 139B, 329A, 329B 1353294 [Description of main component symbols] 100 102 104 106 112, 114, 312, 314 116 118 119 , 141 120 121 122 124 126 128 130 132 136 138 , 328 140 142 143 Hot press forming device Plate sliding plate drive unit module base plate cooling plate water hole frame opening frame support mechanism storage space frame insert spring sealing rack hot plate rubber member area top plate stamping sealing bolt 27 1353294 145 , 342 147 200 ' 250 210 , 260 230 322 manifold insulation slit processed material rigid body spacer 0 ring spacer

326 ' 328 ® 330 S1 L1 L2 HI H2 PI • P2 tl ~ t9 T Insulation board Rubber parts Heat exchange tubes Upper limit position. Pre-loading pressure Transfer pressure Removable temperature Removable temperature Atmospheric pressure Vacuum degree Time Specified time

Η C V heating cooling vacuum 28

Claims (1)

X. The scope of application for patents: ', a hot press forming device for pressing a stamper to shape the surface of a shape drawing, characterized in that it comprises a pressing device, and has a bearing plate and a sliding a plate, and a driving device for driving the sliding plate; and A hot press forming apparatus, wherein the transfer to a thermoplastic plate comprises: loading on the sliding plate or the carrying plate, and comprising: a frame body wire, an elastomer, a flexible top plate, and a heating and cooling mechanism, The frame body has an elastic body-receiving (four), and the bottom plate is inserted into the frame body.卩, and in order to allow the volume to be slid relative to the frame in a changeable manner, the elastic body is housed in the housing, and is compressed when the bottom plate slides in a manner to reduce the volume of the space. The flexible top plate is mounted on the frame body and has an inner surface facing the storage space and an outer surface supporting the stamper, and the heating and cooling mechanism uses the thief fluid to heat and cool the stamper. When the bottom plate slides in a manner to reduce the volume of the storage space, the flexible top plate is deformed outwardly on the inner surface by the elastic force of compressing the elastic body. 2. The hot press forming device according to claim 1, wherein the elastic system is a rubber member or a resin member; the rubber member or the resin member is filled in the housing space without a gap; and the rubber The member or the resin member has a first region in the vicinity of a region in contact with the inner surface of the frame, and a second region inside the first region, 29 is filled with the i-th rubber member of the first region or The hardness of the i-th resin member is such that the hardness of the second rubber member or the second resin member is filled in one of the second regions. 3. The hot press forming apparatus of the invention, wherein the heating and cooling mechanism is formed in the bottom plate, the heat medium fluid passing through the inside of the bottom plate. 4. The hot press forming apparatus according to claim 3, wherein the elastic member-rubber member or a resin member 'the rubber member or the resin member is filled in the accommodation space without a gap, the rubber member or The resin member has a second region in the vicinity of a region in contact with the inner surface of the frame, and a second region on the inner side of the i-th region, the second region being rubber mixed with an additive useful for improving thermal conductivity A material or a resin material, the i-th region being composed of a rubber material or a resin material in which the additive is not mixed or the amount of the additive is less than the second region. 5. The hot press forming apparatus according to claim 1, wherein the heating and cooling mechanism passes through a heat exchange tube inside the elastomer, and the heat medium fluid passes through the inside of the heat exchange tube. 6. The hot press forming apparatus according to claim 5, wherein the elastic system is a rubber member or a resin member, and the rubber member or the resin member is filled in the storage space without a gap, the rubber member or The resin member has: a first region formed in the vicinity of a region in contact with the inner surface of the frame and a region in contact with the bottom plate; and a region surrounded by the first region and a region in contact with the inner surface of the top plate In a second region in the vicinity, the hardness of the first rubber member or the first resin member filled in one of the second regions is higher than the hardness of the second rubber member or a second resin member filled in one of the third regions . 7. The thermal ink forming apparatus according to claim 5, wherein the elastic member-rubber member or the resin member is filled in the housing space without a gap, the rubber member Or the resin member has: a first region formed in the vicinity of a region in contact with the inner surface of the frame and a region in contact with the bottom plate, and a region from the fourth region (4) and the inner surface of the top plate a second region in the vicinity of the region, the second region being composed of a rubber material or a resin material mixed with an additive for improving thermal conductivity; the first region is composed of the additive having no such additive (four) or shape The amount is less than that of the second region of the rubber or resin material. 8. If applying for the hot-pressed forming equipment described in the full-time (4) 1 to 7th shooting--, the model is in the outer edge of the elastic rope. Performing (4) on the spacer such that when the thermoplastic elastic deformation is reversed, all 31 outer edges of the spacer are outside the outer edge of the elastic deformation region, and the inner edge of the spacer is slightly larger than the outer edge of the thermoplastic plate. A lateral hot press forming device is a hot press forming device for pressing a stamper to transfer a shape pattern to a surface of a thermoplastic sheet, characterized by comprising: press-fitting And having a carrier plate, a sliding plate, and a driving device for driving the sliding plate; and a module that is mounted on the sliding plate or the carrier plate, and includes a frame, a bottom plate, and a a low melting point alloy member, a top plate, and a heating and cooling mechanism, the frame having a space inside, the bottom plate being inserted into the frame body, and sliding the volume of the space in a changeable manner, the low The melting point alloy member is housed in the space and has a melting point lower than a softening temperature of the thermoplastic sheet, the top plate is mounted on the frame body, and has an inner surface facing the receiving space and supporting the stamper - the outer surface The heating and cooling mechanism heats and cools the stamper by using a heat medium fluid. When the volume of the storage space is reduced by the bottom plate, the flexible top plate receives the pressing force from the low melting point alloy member on the inner surface. And deformed outward. 11. A type of reduction, which is used in a hot press forming apparatus for extruding a stamper to transfer a concavo-convex pattern to a surface of a thermoplastic sheet, the mold system being characterized by a module comprising a sliding plate or a carrier plate mounted on a pressing device, the module comprising: a frame having a housing space for the elastic body therein; the bottom plate being inserted into the frame body, and The 1353294 volume of the storage space is slidably movable relative to the frame; an elastic body is housed in the storage space, and the bottom plate is slid so as to reduce the volume of the storage space Compressed; a flexible top plate mounted to the frame and having an inner surface facing the receiving space and supporting an outer surface of the stamper; and a heating and cooling mechanism that uses a heat medium fluid to press the pressure The mold is heated and cooled; when the bottom plate slides in such a manner as to reduce the volume of the storage space, the flexible top plate receives the elastic elastic force of the elastic body on the inner surface Fang deformation. f 33