WO2022137946A1 - 熱成形装置および熱成形方法 - Google Patents
熱成形装置および熱成形方法 Download PDFInfo
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- WO2022137946A1 WO2022137946A1 PCT/JP2021/042864 JP2021042864W WO2022137946A1 WO 2022137946 A1 WO2022137946 A1 WO 2022137946A1 JP 2021042864 W JP2021042864 W JP 2021042864W WO 2022137946 A1 WO2022137946 A1 WO 2022137946A1
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- Prior art keywords
- masking plate
- plate
- heater block
- sheet
- masking
- Prior art date
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- 238000003856 thermoforming Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims description 13
- 230000000873 masking effect Effects 0.000 claims abstract description 175
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 16
- 229920001169 thermoplastic Polymers 0.000 claims description 15
- 239000004416 thermosoftening plastic Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
- B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/428—Heating or cooling of moulds or mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/426—Producing specific thermal regimes during thermoforming to obtain particular properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/42—Heating or cooling
- B29C51/427—Cooling of the material with a fluid blast
Definitions
- This disclosure relates to a thermoforming apparatus and a thermoforming method.
- Patent Document 1 discloses a technique for forming a temperature difference in glass by changing the distance between a plurality of heaters and the glass when the glass is deformed.
- Patent Document 2 discloses a technique for holding a hot plate, which is a wafer base, at a predetermined temperature distribution by using a Pelche element, which is a cooling element, in order to keep the wafer at a uniform temperature in a semiconductor manufacturing apparatus. There is.
- thermoforming a thermoplastic sheet there are parts of the sheet where the heating temperature is desired to be suppressed in order to suppress elongation during molding, and parts where the heating temperature is sufficiently raised in order to improve moldability. There are cases where it is desired to be able to thermoform the sheet while providing a temperature difference for each part. None is disclosed in Patent Documents 1 and 2 regarding thermoforming of such a thermoplastic sheet.
- thermoforming a thermoplastic sheet a thermoforming apparatus and a thermoforming device that can thermoform the sheet while providing a temperature difference for each part of the sheet. It is an object of the present invention to provide a molding method.
- One embodiment of the present disclosure made to solve the above problems is a metal plate-shaped masking plate that comes into contact with a thermoplastic sheet to heat the sheet in a thermoforming apparatus, and the sheet in the masking plate. It has a heater block that heats the masking plate in contact with a surface opposite to the contact surface of the masking plate, and a plurality of the heater blocks are arranged with a gap from each other in the surface direction of the masking plate.
- the thickness of the masking plate is 0.2 mm to 3.0 mm, the gap spacing is 1 mm to 15 mm, and the gap spacing is 5 times or more the thickness of the masking plate for high temperature.
- the heat transferred from the heater block to the masking plate is more easily transferred in the thickness direction of the masking plate than in the surface direction of the masking plate, and is transferred to the portion of the masking plate corresponding to the heater block for low temperature.
- the portion of the masking plate corresponding to the high temperature heater block is heated to a high temperature, and the portion of the masking plate corresponding to the low temperature heater block is cooled to a low temperature. It is characterized in that a temperature difference is provided for each part of the masking plate.
- a temperature difference can be provided in the set temperature between a plurality of heater blocks, and a temperature difference can be provided for each portion of the masking plate in the surface direction. Therefore, when thermoforming a thermoplastic sheet, in the heating step, a masking plate provided with a temperature difference for each part in the surface direction is brought into contact with the sheet, and the sheet is provided with a temperature difference for each part in the surface direction. Can be heated. Then, in the molding step, the sheet can be molded with a temperature difference provided for each portion in the surface direction. Therefore, when thermoforming a thermoplastic sheet, the sheet can be thermoformed while providing a temperature difference for each part of the sheet.
- the thickness of the masking plate is reduced to sufficiently secure the space between the plurality of heater blocks, the heat transferred from the plurality of heater blocks to the masking plate is less likely to affect each other in the masking plate. Therefore, by providing a temperature difference in the set temperature between the plurality of heater blocks, it is possible to provide a temperature difference for each part of the sheet. Further, by sufficiently ensuring the space between the plurality of heater blocks, the heat transferred from the plurality of heater blocks to the masking plate is less likely to affect each other in the masking plate. Therefore, the heat transferred from each heater block to the masking plate can be more reliably transferred to the sheet in the thickness direction of the masking plate. Therefore, by providing a temperature difference in the set temperature between the plurality of heater blocks, it is possible to more reliably provide a temperature difference for each part of the sheet.
- the thickness of the masking plate is 0.2 mm to 1.5 mm.
- the heat transferred from the heater block to the masking plate is difficult to be transferred in the surface direction of the masking plate, but is easily transferred to the sheet in the thickness direction of the masking plate. .. Therefore, by providing a temperature difference in the set temperature between the plurality of heater blocks, it is possible to more reliably provide a temperature difference for each part of the sheet.
- the plurality of heater blocks include a high temperature heater block, a low temperature heater block, and an air cooling circuit for cooling the low temperature heater block with air.
- the heater block for low temperature can be efficiently cooled. Therefore, it becomes easy to provide a temperature difference in the set temperature between the heater block for high temperature and the heater block for low temperature. Therefore, a temperature difference can be further provided for each part of the sheet.
- the masking plate can be brought into close contact with the heater block, heat can be easily transferred from the heater block to the masking plate. Therefore, by providing a temperature difference in the set temperature between the plurality of heater blocks, it is possible to more reliably provide a temperature difference for each part of the sheet.
- the heater block includes a metal plate-shaped hot plate that contacts the masking plate and a heater that heats the hot plate, and the gap is in the surface direction of the masking plate. It is preferably formed between the plurality of hot plate plates arranged in.
- the gap spacing can be easily adjusted while suppressing the cost.
- a heating step in which a metal plate-shaped masking plate comes into contact with a thermoplastic sheet to heat the sheet in a thermoforming method.
- the sheet in the state has a molding step of forming by a mold, and in the heating step, the sheet is in contact with a surface of the masking plate opposite to the contact surface with the sheet, and the surface direction of the masking plate.
- a plurality of heater blocks arranged with a gap from each other heat the masking plate, and at least one of the plurality of heater blocks has the masking plate at a temperature different from that of the other heater blocks.
- the thickness of the masking plate is 0.2 mm to 3.0 mm, the gap spacing is 1 mm to 15 mm, and the gap spacing is 5 times or more the thickness of the masking plate for high temperature.
- the heat transferred from the heater block to the masking plate is more easily transferred in the thickness direction of the masking plate than in the surface direction of the masking plate, to the portion of the masking plate corresponding to the heater block for low temperature.
- the portion corresponding to the high temperature heater block in the masking plate is made high temperature
- the portion corresponding to the low temperature heater block in the masking plate is made low temperature.
- the masking plate is characterized in that a temperature difference is provided for each portion thereof.
- a temperature difference can be provided in the set temperature between the plurality of heater blocks, and a temperature difference can be provided for each portion of the masking plate in the surface direction. Therefore, when thermoforming a thermoplastic sheet, in the heating step, a masking plate provided with a temperature difference for each part in the surface direction is brought into contact with the sheet, and the sheet is provided with a temperature difference for each part in the surface direction. Can be heated. Then, in the molding step, the sheet can be molded with a temperature difference provided for each portion in the surface direction. Therefore, when thermoforming a thermoplastic sheet, the sheet can be thermoformed while providing a temperature difference for each part of the sheet.
- the thickness of the masking plate is reduced to sufficiently secure the space between the plurality of heater blocks, the heat transferred from the plurality of heater blocks to the masking plate is less likely to affect each other in the masking plate. Therefore, by providing a temperature difference in the set temperature between the plurality of heater blocks, it is possible to provide a temperature difference for each part of the sheet. Further, by sufficiently ensuring the space between the plurality of heater blocks, the heat transferred from the plurality of heater blocks to the masking plate is less likely to affect each other in the masking plate. Therefore, the heat transferred from each heater block to the masking plate can be more reliably transferred to the sheet in the thickness direction of the masking plate. Therefore, by providing a temperature difference in the set temperature between the plurality of heater blocks, it is possible to more reliably provide a temperature difference for each part of the sheet.
- thermoforming apparatus and thermoforming method of the present disclosure when a thermoplastic sheet is thermoformed, the sheet can be thermoformed while providing a temperature difference for each part of the sheet.
- thermoforming apparatus of this embodiment It is a figure which shows the schematic structure of the thermoforming apparatus of this embodiment, and is the figure which shows the heating process. It is a figure which shows the schematic structure of the thermoforming apparatus of this embodiment, and is the figure which shows the molding process. It is sectional drawing of the hot plate part. It is a bottom view in the central part of a hot plate part. It is an enlarged view of the area A of FIG. It is a figure which shows the temperature distribution of a masking plate and a sheet. It is a figure which shows the modification. It is a figure which shows the prior art.
- thermoforming apparatus 1 that realizes one embodiment of the thermoforming apparatus and the thermoforming method of the present disclosure will be described.
- thermoforming apparatus 1 ⁇ Overview of thermoforming equipment> First, the overall outline of the thermoforming apparatus 1 will be described.
- thermoforming apparatus 1 includes a hot plate unit 11, a mold 12, a table 13, a control unit 14, and the like.
- the hot plate portion 11 is a mechanism that contacts the thermoplastic sheet SH and heats the sheet SH. The details of the hot plate portion 11 will be described later.
- the mold 12 is provided at a position opposite to the hot plate portion 11 with respect to the sheet SH, and is a mold for forming the sheet SH.
- the table 13 has a mold 12 arranged on the upper surface thereof, and is a table for moving the mold 12 up and down.
- the control unit 14 controls each of the thermoforming apparatus 1, and for example, controls the raising and lowering of the hot plate unit 11 and the table 13 and controls the heating of the sheet SH by the hot plate unit 11.
- thermoforming apparatus 1 having such a configuration, as shown in FIG. 1, as a heating step, the hot plate portion 11 (specifically, the masking plate 21 described later) is lowered by the control unit 14 and comes into contact with the sheet SH. In this state, the sheet SH is heated by the hot plate portion 11. Then, as shown in FIG. 2, as a molding process, the control unit 14 raises the hot plate portion 11 and separates the hot plate portion 11 from the sheet SH, while the table 13 rises and the mold 12 rises. The sheet SH in a heated state is formed by the mold 12 in contact with the sheet SH.
- the hot plate portion 11 specifically, the masking plate 21 described later
- the conventional hot plate portion 111 a plurality of heaters 113 are arranged on a single hot plate 112 provided on the surface plate 114.
- the conventional hot plate portion 111 having such a structure is intended to uniformly heat the sheet SH in contact with the surface plate 114 by the surface plate 114 uniformly heated over the entire surface by the heater 113. Met.
- the heating temperature is lowered to form a part (for example, the part X1 shown in FIG. 2).
- a portion for example, a portion X2 shown in FIG. 2
- the thickness of the hot plate 112 is large and the hot plate 112 is only one.
- the heat transferred from each heater 113 to the hot plate 112 is not only in the thickness direction (downward in FIG. 8) but also in the lateral direction (horizontal direction in FIG. 8) in the hot plate 112. It will also be transmitted to.
- the thickness of the surface plate 114 is also relatively large (for example, 15 mm)
- the heat transferred from the heat plate 112 to the surface plate 114 is not only in the thickness direction (downward direction of FIG. 8) but also in the horizontal direction of the surface plate 114.
- the sheet SH when the sheet SH is thermoformed, the sheet SH can be thermoformed while providing a temperature difference for each part of the sheet SH.
- the hot plate portion 11 includes a masking plate 21, an inner heater block 22, an outer heater block 23, a heat insulating material 24, an upper plate 25, and a masking plate holding metal fitting 26.
- a vacuum suction circuit 27, an air cooling circuit 28, and the like are provided.
- the masking plate 21 is provided at the lowermost part of the hot plate portion 11 (that is, the portion closest to the sheet SH), and is a metal plate-shaped member that comes into contact with the sheet SH and heats the sheet SH.
- the inner heater block 22 is a heating unit that comes into contact with the upper surface of the masking plate 21 to heat the masking plate 21.
- the upper surface of the masking plate 21 is a surface (upper surface in FIG. 3) opposite to the contact surface with the sheet SH (lower surface in FIG. 3).
- such an inner heater block 22 is arranged inside the outer heater block 23 when viewed from the lower side (lower side of FIG. 3), and its outer shape is formed in an elliptical shape. Has been done.
- the inner heater block 22 is an example of the "heater block for low temperature" of the present disclosure.
- the inner heater block 22 includes an inner hot plate plate 31, an inner heater 32 (inner cartridge heater), and a cooling plate 33, as shown in FIG.
- the inner hot plate plate 31 is a plate-shaped member of metal (for example, stainless steel or aluminum) that comes into contact with the upper surface of the masking plate 21.
- the inner hot plate plate 31 is arranged with a gap ⁇ from the outer hot plate plate 41, which will be described later, in the surface direction of the masking plate 21 (the left-right direction in FIG. 3 and the front depth direction of the paper surface).
- the inner heater 32 is arranged on the upper surface (upper surface in FIG. 3) of the inner hot plate plate 31 and is a device for heating the inner hot plate plate 31.
- the cooling plate 33 is arranged on the upper surface (upper surface in FIG. 3) of the inner heater 32, and is cooled by the air sent by the air cooling circuit 28 to cool the inner heater block 22 (inner hot plate plate 31). It is a plate-shaped member that cools.
- the outer heater block 23 is a heating unit that comes into contact with the upper surface of the masking plate 21 to heat the masking plate 21. As shown in FIG. 4, such an outer heater block 23 surrounds the inner heater block 22 when viewed from the lower side (lower side of FIG. 3), and has a masking plate 21 rather than the inner heater block 22. It is located outside in the plane direction.
- the outer heater block 23 is an example of the "heater block for high temperature" of the present disclosure.
- the outer heater block 23 includes an outer hot plate plate 41 and an outer heater 42 (outer cartridge heater).
- the outer hot plate plate 41 is a plate-shaped member of metal (for example, stainless steel or aluminum) that comes into contact with the upper surface of the masking plate 21.
- the outer hot plate plate 41 is arranged with a gap ⁇ from the inner hot plate plate 31 in the surface direction of the masking plate 21.
- the outer heater 42 is arranged on the upper surface (upper surface in FIG. 3) of the outer hot plate plate 41, and is a device for heating the outer hot plate plate 41.
- the heat insulating material 24 is a member that insulates between the inner heater block 22 and the upper plate 25, and between the outer heater block 23 and the upper plate 25.
- the masking plate holding metal fitting 26 is a metal fitting for holding the masking plate 21.
- the vacuum suction circuit 27 is a suction passage for sucking the masking plate 21 to the inner heater block 22 and the outer heater block 23 by vacuum suction, and is connected to a suction portion (not shown).
- the air cooling circuit 28 is a passage through which air flows in order to cool the inner hot plate plate 31 of the inner heater block 22 with air, and is connected to an air supply unit (not shown). Then, for example, when the inner heater block 22 is used as a low temperature heater block and the outer heater block 23 is used as a high temperature heater block, the air cooling circuit 28 cools the inner heater block 22 which is a low temperature heater block. do.
- the thickness t of the masking plate 21 is reduced, for example, 0.2 mm to 3.0 mm, more preferably 0.2 mm to 1.5 mm. Further, since the material of the masking plate 21 is, for example, stainless steel, even if the thickness t of the masking plate 21 is small, the masking plate 21 is unlikely to warp.
- the inner heater block 22 and the outer heater block 23 are arranged with a gap ⁇ between them in the surface direction of the masking plate 21.
- This gap ⁇ is specifically formed between the inner hot plate plate 31 (of the inner heater block 22) and the outer hot plate plate 41 (of the outer heater block 23) arranged in the plane direction of the masking plate 21. Is.
- the gap ⁇ of the gap ⁇ is set to 1 mm to 15 mm, for example, 5 times the thickness t of the masking plate 21.
- the inner hot plate plate 31 and the outer hot plate plate 41 are formed by providing a temperature difference between the set temperature of the inner heater 32 and the set temperature of the outer heater 42. Provide a temperature difference.
- the inner heater block 22 is used as a low temperature heater block
- the outer heater block 23 is used as a high temperature heater block.
- the inner hot plate plate 31 of the inner heater block 22 is cooled by air by the air cooling circuit 28, so that the inner heater block 22 is used as a low temperature heater block.
- the heat transferred from the outer hot plate plate 41 to the masking plate 21 is transferred in the thickness direction of the masking plate 21 (thick line in the figure) rather than in the surface direction of the masking plate 21 (in the figure, in the direction of the arrow indicated by the broken line). It becomes easier to transmit in the direction of the arrow indicated by. Therefore, the heat transferred from the outer hot plate plate 41 on the high temperature side to the masking plate 21 is more likely to be transferred to the sheet SH than to the portion of the masking plate 21 corresponding to the inner hot plate plate 31 on the low temperature side.
- the heat transferred from the outer hot plate plate 41 on the high temperature side to the masking plate 21 is less likely to be affected by the heat transferred from the inner hot plate plate 31 on the low temperature side to the masking plate 21. Therefore, by heating the portion of the masking plate 21 corresponding to the outer hot plate plate 41 to a high temperature and lowering the portion of the masking plate 21 corresponding to the inner hot plate plate 31 to a low temperature, the temperature difference in the masking plate 21 for each portion is increased. Can be provided. Therefore, with respect to the sheet SH in contact with the masking plate 21, a temperature difference can be provided for each portion.
- the applicant of the present application measured the temperature distribution of the masking plate 21 and the sheet SH.
- the thickness t of the masking plate 21 is 1.0 mm
- the interval ⁇ of the gap ⁇ is 5 mm (the size is 5 times the thickness t of the masking plate 21)
- the set temperature of the inner heater 32 is 125 ° C.
- the set temperature of the outer heater 42 was set to 170 ° C.
- the thickness t of the masking plate 21 is 0.2 mm to 3.0 mm other than 1.0 mm, and in particular, the thickness t of the masking plate 21 is 0.2 mm to 1. A more preferable result could be obtained when the thickness was 5 mm.
- masking plate (21) right is the temperature distribution of the masking plate 21 at the position shown as “right” in FIG. 4
- “masking plate (21) left” is shown in FIG. This is the temperature distribution of the masking plate 21 at the position indicated as “left”.
- the inner heater block 22 and the outer heater block 23 are arranged with a gap ⁇ between them in the surface direction of the masking plate 21.
- the thickness t of the masking plate 21 is 0.2 mm to 3.0 mm, and the gap ⁇ of the gap ⁇ is 1 mm to 15 mm.
- a temperature difference is provided between the set temperature of the inner heater 32 of the inner heater block 22 and the set temperature of the outer heater 42 of the outer heater block 23, and the temperature difference is set for each portion of the masking plate 21 in the surface direction.
- the sheet SH when the sheet SH is thermoformed, the sheet SH can be thermoformed while providing a temperature difference for each portion of the sheet SH. Therefore, when thermoforming the sheet SH, for example, a portion having a printed pattern (for example, the portion X1 in FIG. 2) is molded while suppressing elongation, while a portion for which moldability is desired to be improved (for example, a portion in FIG. 2). X2) can be molded with a large elongation.
- the thickness t of the masking plate 21 is reduced to sufficiently secure the space ⁇ between the gap ⁇ between the inner heater block 22 and the outer heater block 23, the heat is transmitted from the inner heater block 22 and the outer heater block 23 to the masking plate 21.
- the heat generated is less likely to affect each other in the masking plate 21. Therefore, by providing a temperature difference in the set temperature between the inner heater block 22 and the outer heater block 23, it is possible to provide a temperature difference for each portion of the sheet SH.
- the thickness t of the masking plate 21 is preferably 0.2 mm to 1.5 mm.
- the thickness t of the masking plate 21 is further reduced, so that the heat transferred from the inner heater block 22 and the outer heater block 23 to the masking plate 21 is difficult to be transmitted in the surface direction of the masking plate 21, while the masking plate 21. It becomes easy to be transmitted to the sheet SH in the thickness direction of 21. Therefore, by providing a temperature difference in the set temperature between the inner heater block 22 and the outer heater block 23, it is possible to more reliably provide a temperature difference for each portion of the sheet SH.
- the distance ⁇ between the gap ⁇ between the inner heater block 22 and the outer heater block 23 is set to be 5 times the thickness t of the masking plate 21.
- the heat transferred from the inner heater block 22 and the outer heater block 23 to the masking plate 21 is transferred to the masking plate 21. It becomes difficult to influence each other. Therefore, the heat transferred from the inner heater block 22 and the outer heater block 23 to the masking plate 21 is more reliably transferred to the sheet SH in the thickness direction of the masking plate 21. Therefore, by providing a temperature difference in the set temperature between the inner heater block 22 and the outer heater block 23, it is possible to more reliably provide a temperature difference for each portion of the sheet SH.
- thermoforming apparatus 1 has an air cooling circuit 28 for cooling the inner heater block 22 for low temperature with air.
- thermoforming apparatus 1 has a vacuum suction circuit 27 that sucks the masking plate 21 to the inner heater block 22 and the outer heater block 23 by vacuum suction.
- the masking plate 21 can be brought into close contact with the inner heater block 22 and the outer heater block 23, so that heat can be easily transferred from the inner heater block 22 and the outer heater block 23 to the masking plate 21. Therefore, by providing a temperature difference in the set temperature between the inner heater block 22 and the outer heater block 23, it is possible to more reliably provide a temperature difference for each portion of the sheet SH.
- the gap ⁇ is formed between the inner hot plate plate 31 and the outer hot plate plate 41 arranged in the surface direction of the masking plate 21.
- the interval ⁇ of the gap ⁇ can be easily adjusted while suppressing the cost.
- the inner heater block 22 and the outer heater block 23 arranged with a gap ⁇ in the surface direction of the masking plate 21 heat the masking plate 21. .. Then, the inner heater block 22 heats the masking plate 21 at a temperature different from that of the outer heater block 23 (that is, at a lower temperature than that of the outer heater block 23).
- thermoforming the thermoplastic sheet SH in the heating step, the masking plate 21 having a temperature difference for each part in the surface direction is brought into contact with the sheet SH, and the temperature of the sheet SH is raised for each part in the surface direction. It can be heated while making a difference. Then, in the molding step, the sheet SH can be molded with a temperature difference provided for each portion in the surface direction. Therefore, when the thermoplastic sheet SH is thermoformed, the sheet SH can be thermoformed while providing a temperature difference for each portion of the sheet SH.
- FIG. 7 is a top view of the low temperature heater block 51, the high temperature heater block 52, and the masking plate 21 in the hot plate portion 11.
- thermoforming apparatus 1 may have three or more heater blocks. At this time, in the thermoforming apparatus 1, at least one of the plurality of heater blocks heats the masking plate 21 at a temperature different from that of the other heater blocks in the heating step.
- the sheet SH is heated to a uniform temperature and the sheet SH is heated. Can also be thermoformed.
- Thermoforming device 11 Hot plate part 12 Mold 13 Table 14 Control part 21 Masking plate 22 Inner heater block 23 Outer heater block 27 Vacuum suction circuit 28 Air cooling circuit 31 Inner hot plate plate 32 Inner heater 33 Cooling plate 41 Outer hot plate Plate 42 Outer heater SH sheet t (of masking plate) Thickness ⁇ Gap ⁇ Interval X1, X2 Site
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- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
また、複数のヒータブロックの間の隙間の間隔を十分に確保することにより、複数のヒータブロックからマスキングプレートへ伝わった熱は、マスキングプレートにおいて互いに影響し難くなる。そのため、各々のヒータブロックからマスキングプレートへ伝わった熱は、より確実に、マスキングプレートの厚み方向にあるシートへ伝わり易くなる。したがって、複数のヒータブロックの間でその設定温度に温度差を設けることにより、より確実に、シートの部位ごとに温度差を設けることができる。
また、マスキングプレートの厚みを小さくして、複数のヒータブロックの間の隙間の間隔を十分に確保するので、複数のヒータブロックからマスキングプレートへ伝わった熱は、マスキングプレートにおいて互いに影響し難くなる。そのため、複数のヒータブロックの間でその設定温度に温度差を設けることにより、シートの部位ごとに温度差を設けることができる。
また、複数のヒータブロックの間の隙間の間隔を十分に確保することにより、複数のヒータブロックからマスキングプレートへ伝わった熱は、マスキングプレートにおいて互いに影響し難くなる。そのため、各々のヒータブロックからマスキングプレートへ伝わった熱は、より確実に、マスキングプレートの厚み方向にあるシートへ伝わり易くなる。したがって、複数のヒータブロックの間でその設定温度に温度差を設けることにより、より確実に、シートの部位ごとに温度差を設けることができる。
まず、熱成形装置1の全体の概要について説明する。
熱成形装置1は、図1に示すように、熱板部11と、金型12と、テーブル13と、制御部14などを有する。
このような構成の熱成形装置1において、図1に示すように、加熱工程として、制御部14により、熱板部11(詳しくは、後述するマスキングプレート21)が下降してシートSHに接触した状態で、熱板部11によりシートSHが加熱される。そして、その後、図2に示すように、成形工程として、制御部14により、熱板部11が上昇して熱板部11がシートSHから離れる一方で、テーブル13が上昇して金型12がシートSHに接触して、加熱された状態のシートSHが金型12により成形される。
次に、熱板部11の詳細について説明する。
以上のように、本実施形態によれば、内側ヒータブロック22と外側ヒータブロック23が、マスキングプレート21の面方向に互いに隙間δを空けて配置されている。そして、マスキングプレート21の厚みtを0.2mm~3.0mmとし、隙間δの間隔αを1mm~15mmとしている。
11 熱板部
12 金型
13 テーブル
14 制御部
21 マスキングプレート
22 内側ヒータブロック
23 外側ヒータブロック
27 真空吸着回路
28 エア冷却回路
31 内側熱板プレート
32 内側ヒータ
33 冷却プレート
41 外側熱板プレート
42 外側ヒータ
SH シート
t (マスキングプレートの)厚み
δ 隙間
α 間隔
X1,X2 部位
Claims (6)
- 熱可塑性のシートに接触して前記シートを加熱する金属の板状のマスキングプレートと、
前記マスキングプレートにおける前記シートとの接触面とは反対側の面に接触して、前記マスキングプレートを加熱するヒータブロックと、を有し、
複数の前記ヒータブロックが、前記マスキングプレートの面方向に互いに隙間を空けて配置されており、
前記マスキングプレートの厚みを0.2mm~3.0mmとし、
前記隙間の間隔を1mm~15mmとし、
前記隙間の間隔を、前記マスキングプレートの厚みの5倍以上の大きさとして、
高温用のヒータブロックから前記マスキングプレートに伝わる熱を、前記マスキングプレートの面方向に伝わるよりも、前記マスキングプレートの厚さ方向に伝わり易くして、前記マスキングプレートにおける低温用のヒータブロックに対応する部分に伝わるよりも、前記シートに伝わり易くして、
前記マスキングプレートにおける高温用のヒータブロックに対応する部位を高温にして、前記マスキングプレートにおける低温用のヒータブロックに対応する部位を低温にすることにより、前記マスキングプレートにおいてその部位ごとに温度差を設けること、
を特徴とする熱成形装置。 - 請求項1の熱成形装置において、
前記マスキングプレートの厚みを0.2mm~1.5mmとすること、
を特徴とする熱成形装置。 - 請求項1または2の熱成形装置において、
複数の前記ヒータブロックとして、高温用のヒータブロックと、低温用のヒータブロックを有し、
前記低温用のヒータブロックをエアで冷却するエア冷却回路を有すること、
を特徴とする熱成形装置。 - 請求項1乃至3のいずれか1つの熱成形装置において、
前記マスキングプレートを真空吸引により前記ヒータブロックに吸着させる真空吸着回路を有すること、
を特徴とする熱成形装置。 - 請求項1乃至4のいずれか1つの熱成形装置において、
前記ヒータブロックは、
前記マスキングプレートに接触する金属の板状の熱板プレートと、
前記熱板プレートを加熱するヒータと、
を備え、
前記隙間は、前記マスキングプレートの面方向に配置される複数の前記熱板プレートの間に形成されるものであること、
を特徴とする熱成形装置。 - 金属の板状のマスキングプレートが熱可塑性のシートに接触して前記シートを加熱する加熱工程と、
加熱された状態の前記シートが金型により成形される成形工程と、
を有し、
前記加熱工程では、
前記マスキングプレートにおける前記シートとの接触面とは反対側の面に接触し、前記マスキングプレートの面方向に互いに隙間を空けて複数配置されたヒータブロックが、前記マスキングプレートを加熱し、
複数の前記ヒータブロックのうちの少なくとも1つの前記ヒータブロックが、他の前記ヒータブロックと異なる温度で前記マスキングプレートを加熱し、
前記マスキングプレートの厚みを0.2mm~3.0mmとし、
前記隙間の間隔を1mm~15mmとし、
前記隙間の間隔を、前記マスキングプレートの厚みの5倍以上の大きさとして、
高温用のヒータブロックから前記マスキングプレートに伝わる熱を、前記マスキングプレートの面方向に伝わるよりも、前記マスキングプレートの厚さ方向に伝わり易くして、前記マスキングプレートにおける低温用のヒータブロックに対応する部分に伝わるよりも、前記シートに伝わり易くして、
前記マスキングプレートにおける高温用のヒータブロックに対応する部位を高温にして、前記マスキングプレートにおける低温用のヒータブロックに対応する部位を低温にすることにより、前記マスキングプレートにおいてその部位ごとに温度差を設けること、
を特徴とする熱成形方法。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007030422A (ja) * | 2005-07-28 | 2007-02-08 | Fujifilm Holdings Corp | 加熱ヘッド及び熱溶着装置 |
JP4457438B2 (ja) | 1999-09-27 | 2010-04-28 | 旭硝子株式会社 | ガラス板の曲げ成形装置および曲げ成形方法 |
JP2014127310A (ja) * | 2012-12-26 | 2014-07-07 | Mitsubishi Rayon Co Ltd | 多孔質電極基材前駆体シートの製造方法および多孔質電極基材前駆体シート |
JP2015509280A (ja) | 2011-09-21 | 2015-03-26 | ラム リサーチ コーポレーションLam Research Corporation | 半導体処理のための平面熱ゾーンを伴う熱板 |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US987293A (en) * | 1910-02-10 | 1911-03-21 | Simplex Electric Heating Co | Electrically-heated matrix-press. |
AT262066B (de) * | 1964-07-29 | 1968-05-27 | Werner & Pfleiderer | Elektrisch beheizte Pressenplatte |
US3386503A (en) * | 1966-02-24 | 1968-06-04 | Continental Can Co | Differential heating plate |
DE2711558A1 (de) * | 1977-03-17 | 1978-09-21 | Werner & Pfleiderer | Heizplatte fuer formwerkzeuge |
DE2734252C2 (de) * | 1977-07-29 | 1979-05-23 | Wagener & Co, 5830 Schwelm | Pressenplatte |
US4269586A (en) * | 1980-01-25 | 1981-05-26 | Norfield Corporation | Heated platen |
JPS57101712A (en) * | 1980-12-17 | 1982-06-24 | Nissan Motor Co Ltd | Detecting device for car wheel mounting bold of vehicle body |
JPS6014567Y2 (ja) * | 1982-10-14 | 1985-05-09 | 三菱化成ポリテック株式会社 | 熱可塑性樹脂シ−ト成形機の加熱装置 |
FR2646579A1 (fr) * | 1989-03-20 | 1990-11-02 | Guillemot Gerard | Equipement chauffant electriquement a haute temperature par zones regulees pour la mise en oeuvre de produits en materiaux composites |
US5441675A (en) * | 1993-11-01 | 1995-08-15 | Davidson Textron, Inc. | Forming method and apparatus |
WO1998005060A1 (en) * | 1996-07-31 | 1998-02-05 | The Board Of Trustees Of The Leland Stanford Junior University | Multizone bake/chill thermal cycling module |
US5983644A (en) * | 1997-09-29 | 1999-11-16 | Applied Materials, Inc. | Integrated bake and chill plate |
IT1299648B1 (it) * | 1998-03-18 | 2000-03-24 | Isap Omv Group Spa | Procedimento ed impianto di riscaldamento selettivo a zone di un materiale termoformabile |
JPH11268111A (ja) * | 1998-03-24 | 1999-10-05 | Sumitomo Heavy Ind Ltd | シートの加熱方法及びその装置 |
US7179639B2 (en) * | 2002-03-05 | 2007-02-20 | Raveendran Pottathil | Thermal strip thermocycler |
US20040265409A1 (en) * | 2003-05-21 | 2004-12-30 | Stephen Keeley | Closed loop oven control system and method |
JP2005125534A (ja) * | 2003-10-22 | 2005-05-19 | Nissan Motor Co Ltd | 樹脂シート成形装置とそれを用いた成形方法 |
JP2005131857A (ja) * | 2003-10-29 | 2005-05-26 | Nissan Motor Co Ltd | 熱成形用成形型、樹脂シートの熱成形方法 |
US7380586B2 (en) * | 2004-05-10 | 2008-06-03 | Bsst Llc | Climate control system for hybrid vehicles using thermoelectric devices |
CA2551728A1 (en) * | 2006-07-06 | 2008-01-06 | Comtek Advanced Structures Limited | System for resin curing |
JP2008238442A (ja) * | 2007-03-26 | 2008-10-09 | Sumitomo Chemical Co Ltd | 熱可塑性樹脂製発泡成形体の製造方法 |
JP5039469B2 (ja) * | 2007-07-27 | 2012-10-03 | キヤノン株式会社 | 電子写真感光体の製造方法 |
DE102009041563A1 (de) * | 2009-09-15 | 2011-03-24 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Verpackungsmaschine mit mehreren Heizelementen |
WO2011048365A1 (en) * | 2009-10-20 | 2011-04-28 | Surface Generation Limited | Zone control of tool temperature |
US8546732B2 (en) * | 2010-11-10 | 2013-10-01 | Lam Research Corporation | Heating plate with planar heater zones for semiconductor processing |
JP5785828B2 (ja) * | 2011-09-09 | 2015-09-30 | 株式会社浅野研究所 | 熱成形装置 |
KR101421133B1 (ko) * | 2013-02-08 | 2014-07-22 | 고묘정 | 국부 가열을 이용한 플라스틱 부재의 열융착 시스템 및 방법 |
JP6674227B2 (ja) | 2015-10-30 | 2020-04-01 | 株式会社浅野研究所 | 熱成形装置および熱成形方法 |
US10286636B1 (en) * | 2016-02-26 | 2019-05-14 | Apple Inc. | Fabric-based items with three-dimensional shapes |
CN205553173U (zh) * | 2016-02-29 | 2016-09-07 | 福建光阳蛋业股份有限公司 | 咸蛋塑封下膜成型装置 |
JP6560727B2 (ja) * | 2017-10-25 | 2019-08-14 | Towa株式会社 | 樹脂成形品の製造装置、樹脂成形システム、および樹脂成形品の製造方法 |
CN110936589A (zh) * | 2019-04-18 | 2020-03-31 | 陈鹏 | 不同区域有多种导热效果的热压模具 |
-
2020
- 2020-12-22 JP JP2020212373A patent/JP6900139B1/ja active Active
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2021
- 2021-11-23 WO PCT/JP2021/042864 patent/WO2022137946A1/ja active Application Filing
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- 2021-11-23 CN CN202180060332.7A patent/CN116710262B/zh active Active
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- 2021-11-23 KR KR1020237001057A patent/KR102590556B1/ko active IP Right Grant
- 2021-11-25 TW TW110143964A patent/TWI792715B/zh active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4457438B2 (ja) | 1999-09-27 | 2010-04-28 | 旭硝子株式会社 | ガラス板の曲げ成形装置および曲げ成形方法 |
JP2007030422A (ja) * | 2005-07-28 | 2007-02-08 | Fujifilm Holdings Corp | 加熱ヘッド及び熱溶着装置 |
JP2015509280A (ja) | 2011-09-21 | 2015-03-26 | ラム リサーチ コーポレーションLam Research Corporation | 半導体処理のための平面熱ゾーンを伴う熱板 |
JP2014127310A (ja) * | 2012-12-26 | 2014-07-07 | Mitsubishi Rayon Co Ltd | 多孔質電極基材前駆体シートの製造方法および多孔質電極基材前駆体シート |
Non-Patent Citations (1)
Title |
---|
See also references of EP4159411A4 |
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