WO2016171175A1 - Appareil de thermoformage et procédé de thermoformage - Google Patents

Appareil de thermoformage et procédé de thermoformage Download PDF

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Publication number
WO2016171175A1
WO2016171175A1 PCT/JP2016/062518 JP2016062518W WO2016171175A1 WO 2016171175 A1 WO2016171175 A1 WO 2016171175A1 JP 2016062518 W JP2016062518 W JP 2016062518W WO 2016171175 A1 WO2016171175 A1 WO 2016171175A1
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WO
WIPO (PCT)
Prior art keywords
frame
sheet
base material
base
sealing
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Application number
PCT/JP2016/062518
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English (en)
Japanese (ja)
Inventor
一典 寺本
Original Assignee
株式会社浅野研究所
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Publication of WO2016171175A1 publication Critical patent/WO2016171175A1/fr

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    • 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
    • B29C51/12—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 of articles having inserts or reinforcements
    • 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

Definitions

  • the present invention relates to a thermoforming apparatus and a thermoforming method.
  • This application claims priority based on Japanese Patent Application No. 2015-086724 for which it applied to Japan on April 21, 2015, and uses the content here.
  • a vacuum press lamination molding device that performs radiation heating in the upper and lower chambers, or thermoforming that performs hot plate heating.
  • thermoforming that performs hot plate heating.
  • Patent Document 1 discloses a coating apparatus including a chamber box that can be depressurized.
  • the core material base material
  • the pressure is reduced
  • the skin material (sheet) heated and softened toward the core material is moved downward
  • the inside of the chamber box is pressurized
  • the skin material is positioned below.
  • the core material is pressed and covered.
  • the skin material that has been displaced downward is pressed against the core material at the lower position to cover it, so that the core material receives pressure at the lower position. Therefore, a pressure strength greater than that of a conventional molding apparatus or coating apparatus is not required.
  • the present invention has been made in view of the above circumstances, and provides a thermoforming apparatus and a thermoforming method for improving the adhesion between a base material and a sheet in a winding portion.
  • thermoforming apparatus is a thermoforming apparatus that molds a sheet with respect to a base material, or adheres the sheet to the base material.
  • a frame bottom having pores formed therein, a lower frame forming a space for accommodating the base material, a heating surface, and the heating surface being in close contact with the upper edge of the frame peripheral wall portion
  • a configured heat plate a base having a base material holding part capable of holding the base material, and provided to protrude from the base installation surface of the frame bottom part, and the entire circumference of the base material holding part in plan view And is provided in the lower frame so as to be vertically movable between a sealing frame that surrounds the sheet, a rising position where the sheet is heated by the hot plate, and a lowering position that is in close contact with the upper end of the sealing frame.
  • thermoforming device that grips the outer peripheral edge without gaps over the entire circumference, and the sheet gripping part is A sealed space surrounded by the sheet and the sealed frame is formed when in close contact with the upper end of the frame, and the vacuum vent communicates with the space in the lower frame, and at least the bottom of the frame inside the sealed frame Is opened to the upper surface in the sealed frame, and is sucked through the vacuum vent in a state where the sealed space is formed.
  • the thermoforming device the thermoforming device according to the first aspect, the sheet is sucked from the vacuum vent and the sheet gripping portion is lowered from the raised position toward the base material in the airtight space, so that the sheet is made of the base material. Bonded to the surface.
  • the sheet gripping portion When the sheet gripping portion reaches the lowered position, a side surface of the base, an upper surface inside the sealing frame, a side surface inside the sealing frame, and a sealed space surrounded by the sheet are formed.
  • the inside of the sealed space is sucked through the vacuum vent, the degree of vacuum in the sealed space is further increased. Therefore, the sheet is adsorbed on the adsorption surface that continuously spreads from the lower end of the substrate through the boundary between the substrate and the substrate holding part of the base to the upper surface in the sealed frame and the inner side surface of the sealed frame. .
  • air and impurities do not enter between the substrate and the sheet, and the sheet adheres to the substrate until reaching the boundary and the bottom surface (back surface) side of the substrate.
  • a sealing member may be provided on an upper end of the sealing frame.
  • the sealing frame since the sealing member is provided, the sealing frame has a buffering function for the sheet gripping portion moved to the lowered position, and the sheet gripping portion and the sealing frame are the sealing member. The airtightness of the sealed space increases.
  • the said sealing frame inner upper surface is formed between the said base material holding part and the said sealing frame, and is in a position lower than the outer periphery upper edge part of the said base material holding part, and the upper end of the said sealing frame. It may be provided.
  • thermoforming apparatus when the inside of the sealed space is sucked through the vacuum vent, the sheet descends toward the upper edge of the outer periphery of the substrate holding portion while covering the surface of the substrate. While maintaining the directivity, the base material holding part comes into contact with the upper surface inside the sealing frame from the upper edge of the outer periphery. As a result, the sheet is wound without any gap to the position where the sheet is in contact with the upper peripheral edge of the base material holding portion of the base material, that is, the bottom edge (back surface) side outer edge of the base material. As a result, the adhesiveness between the sheet and the substrate at the entrained portion is further increased.
  • the said sealing frame inner upper surface comprises the upper surface of the recessed part formed in the outer peripheral side of the said base material holding part.
  • the upper surface of the recess forms the upper surface in the sealed frame.
  • the sealed space is a space surrounded by the side surface of the base, the upper surface of the recess, the inner side surface of the sealing frame, and the sheet. Since the upper surface of the recess is higher than the upper surface of the frame bottom, the sealed space can be reduced compared to the case where the upper surface of the sealed frame is the upper surface of the frame bottom. Therefore, the time required for increasing the degree of vacuum in the sealed space is shortened.
  • the thermoforming method according to the second aspect of the present invention has a frame bottom part in which a frame peripheral wall part and a vacuum vent are formed, and can hold a base frame that forms a space for accommodating the base material, and the base material.
  • the sheet is heated by a base having a base material holding part, a sealing frame provided so as to protrude from the base mounting surface of the frame bottom part and enclosing the entire circumference of the base material holding part in a plan view, and a hot plate
  • a sheet gripper that is provided in the lower frame so as to be vertically movable between a raised position and a lowered position that is in close contact with the upper end of the sealing frame, and grips the outer peripheral edge of the sheet over the entire circumference without gaps;
  • a thermoforming method using a thermoforming apparatus comprising: the base material is held by the base material holding part; the base material is accommodated inside the hermetic frame; The outer peripheral edge is gripped over the entire circumference without any gap, and the hot plate is held at the upper
  • thermoforming method in the step of sucking the sealed space formed when the sheet gripping portion is in close contact with the upper end of the frame peripheral wall portion with the vacuum vent, the degree of vacuum in the sealed space is increased. Further, the sheet is adsorbed on the aforementioned adsorption surface. Thereby, the adhesiveness of the sheet
  • the space between the sheet and the hot plate may be pressurized when the sealed space is sucked through the vacuum vent.
  • the sheet is pressed against the surface of the base material from the hot plate side with pressurization, and the adhesion between the sheet and the base material is further enhanced.
  • thermoforming apparatus and thermoforming method according to each of the above aspects of the present invention, the adhesion between the sheet and the substrate at the entrained portion can be improved. As a result, the quality of the molded product can be improved.
  • thermoforming apparatus which concerns on one Embodiment of this invention, it is sectional drawing which shows the state before dropping a sheet
  • thermoforming apparatus and a thermoforming method according to an embodiment of the present invention will be described with reference to the drawings.
  • the drawings used in the following description are schematic, and the length, width, thickness ratio, and the like are not necessarily the same as the actual ones, and can be changed as appropriate.
  • thermoforming equipment 1 and 2 are a cross-sectional view and a plan view of the thermoforming apparatus 1 of the present embodiment, showing a state before the sheet is lowered.
  • the thermoforming apparatus 1 includes a lower frame 2, a hot plate 4, a base 6, a sheet gripping portion 8, and a sealing frame 10.
  • the lower frame 2 is a casing of the thermoforming device 1 and includes a frame bottom portion 12 and a frame peripheral wall portion 14.
  • the frame bottom portion 12 is fixed at a predetermined position in consideration of the intended use of the thermoforming device 1. Further, a fixing tool or the like for installation at a predetermined position may be provided, and an adhesive portion or the like for bonding to the predetermined position may be provided.
  • the lower frame 2 has a space S2 surrounded by the frame bottom 12 and the frame peripheral wall 14.
  • the frame peripheral wall portion 14 is erected on one plate surface 12 a of the frame bottom portion 12 at a position close to the outer periphery of the frame bottom portion 12.
  • a seal member 39 is provided on the upper end surface 14 a of the frame peripheral wall portion 14.
  • the seal member 39 is a member for bringing the bottom surface of the heat plate 4 into close contact with the frame peripheral wall portion 14 when the heat plate 4 described below comes into contact with the upper end surface 14 a of the frame peripheral wall portion 14.
  • Examples of the material of the sealing member 38 include synthetic rubber such as styrene / butadiene rubber, but are not particularly limited.
  • the hot plate 4 is formed in a flat plate shape having a smooth heating surface 4p and larger than the lower frame 2 in plan view. And the hot platen 4 is provided so that raising / lowering is possible in the direction which approaches / separates with respect to the lower frame 2 arrange
  • the heating surface 4p of the hot plate 4 is disposed in close contact with the upper end surface 14a of the frame peripheral wall portion 14 of the lower frame 2 in a state where the movement is completed downward.
  • a plurality of heaters 31,..., 31 are provided on the upper surface 4 a of the hot plate 4 at predetermined intervals.
  • the hot plate 4 is formed with a plurality of vent holes 33,..., 33 that open to the heating surface 4p at predetermined intervals.
  • Each vent 33 is connected to a vacuum tank (not shown) provided with a vacuum pump for vacuum suction on the heating surface 4p side, and a pressurized tank (not shown) for storing compressed air by a compressor.
  • the thermoforming apparatus 1 is an apparatus that molds a sheet H softened by being heated by the hot plate 4 with respect to the base material B accommodated in the space S2 or adheres it to the surface R of the base material B. It is.
  • the base material B is a main body formed of a thermoplastic resin such as a polypropylene resin or a polyethylene resin of a molded product.
  • the shape of the base material B is not particularly limited, but the height dimension of the base material B is smaller than the height dimension of the frame peripheral wall portion 14.
  • the sheet H is a known multilayer sheet having, for example, a printing layer, a protective film provided on the surface of the printing layer, or a carrier film, and an adhesive layer provided on the back surface of the printing layer.
  • the material of the film or layer is heated by contacting the heating surface 4p of the hot plate 4, has flexibility and adhesiveness, and can be coated on the surface R of the base material B when cooled. If it is, it will not be restrict
  • the base 6 is a member for holding the base material B in the space S ⁇ b> 2, and is provided in contact with a predetermined position on the plate surface 12 a of the frame bottom 12. That is, the plate surface 12 a of the frame bottom 12 is the base installation surface 20.
  • a base material holding portion 16 capable of holding the base material B is provided in the approximate center of the base 6 in plan view.
  • the base material B is installed in the base material holding part 16.
  • the planar view shape of the substrate holding part 16 is the same as the planar view shape of the bottom surface of the substrate B.
  • the base material holding part 16 is formed slightly smaller than the bottom surface of the base material B. Thereby, when the sheet
  • the base 6 extends to the outer peripheral side of the base material holding part 16, and the height dimension from the plate surface 12 a of the frame bottom 12 of the extending part of the base 6 is smaller than the base material holding part 16. . Further, an outer peripheral wall portion 18 that is a portion extending from the base material holding portion 16 is provided so as to stand up with respect to the plate surface 12 a of the frame bottom portion 12. With such a configuration, the concave portion 21 is provided on the outer peripheral side of the substrate holding portion 16.
  • the sheet gripping part 8 is composed of a frame upper part 8A and a frame lower part 8B.
  • the frame upper portion 8A and the frame lower portion 8B are formed in accordance with the shape of the sheet H so that the outer peripheral edge of the sheet H can be arranged at the approximate center in the width direction of these frames in plan view. That is, the frame upper part 8A and the frame lower part 8B are formed so that the outer peripheral edge of the sheet H is positioned between the outer peripheral edge and the inner peripheral edge of the frame upper part 8A and the frame lower part 8B.
  • the outer peripheral edge of the sheet H that is stretched without slack is sandwiched between the frame upper part 8A and the frame lower part 8B without any gaps.
  • the sheet gripping portion 8 is supported by a sheet gripping portion lifting mechanism (hereinafter referred to as “lifting mechanism”) 22 so as to be able to descend from the ascending position P ⁇ b> 1 where the sheet H is heated by the hot plate 4.
  • the elevating mechanism 22 includes a support base 24, a shaft portion 25, a moving portion 26, and a support portion 27.
  • the support base 24 is provided on the plate surface 12a of the frame bottom portion 12 in the space S2 so as to contact the side surface 6c of the base 6 and surround the base 6 in a plan view.
  • the shaft portion 25 is erected on the upper surface of the support base 24 along the ascending / descending direction of the seat H. Further, the shaft portion 25 penetrates the moving portion 26.
  • the moving part 26 is an annular member that can be moved up and down along the axial direction of the shaft part 25 by a drive part (not shown).
  • the support portion 27 is provided so as to protrude from the moving portion 26 into the space S ⁇ b> 2 along the direction parallel to the plate surface 12 a of the frame bottom portion 12.
  • the protruding end portion of the support portion 27 overlaps with the end portion of the support base 24 that contacts the base 6 in plan view.
  • a frame lower portion 8B of the sheet gripping portion 8 is continuously provided on the upper surface of the support portion 27.
  • the sealing frame 10 is provided so as to protrude from the plate surface 12a (that is, the base installation surface 20) of the frame bottom portion 12.
  • the hermetic frame 10 is provided at the end of the elevating mechanism 22 that contacts the base 6 of the support 24 so as to protrude from the upper surface of the support 24. Therefore, the upper end surface 10 a of the sealing frame 10 overlaps the protruding end portion of the support portion 27 in plan view.
  • the height dimension of the sealing frame 10 from the plate surface 12a of the frame bottom portion 12 is equivalent to the height dimension of the outer peripheral wall portion 18 of the base 6 from the plate surface 12a.
  • the height dimension of the outer peripheral wall part 18 and the sealing frame 10 from the board surface 12a of the frame bottom part 12 is larger than the height dimension of the upper surface of the base material holding
  • the height dimension of the side surface 16c of the substrate holding part 16 is secured to some extent. Therefore, the height dimension of the outer peripheral wall part 18 and the sealing frame 10 from the plate surface 12a of the frame bottom part 12 may be smaller than the height dimension of the upper surface of the base material holding part 16 of the base 6 from the same surface. , May be equivalent.
  • sealing frame inner upper surface 40a between the base material holding part 16 and the sealing frame 10 is the outer periphery upper edge part (equivalent to the boundary x shown in FIG.4 and FIG.5) of the base material holding part 16 and the said sealing frame. It is provided at a position lower than the upper end.
  • the sheet gripping portion 8 is provided so as to be vertically movable between an ascending position P1 where the sheet H is heated by the hot plate 4 and a descending position P2 closely contacting the upper end surface (upper end) 10a of the sealing frame 10. Yes.
  • a sealing member 38 is provided on the upper end surface 10 a of the sealing frame 10.
  • the seal member 38 is a member for bringing the bottom surface of the support portion 27 lowered to the upper end surface 10a of the sealing frame 10 by the lifting mechanism 22 into close contact with the sealing frame 10, and is made of an appropriate material in consideration of the material of the support portion 27 and the like. It is formed with.
  • Examples of the material of the sealing member 38 include synthetic rubber such as styrene / butadiene rubber, but are not particularly limited.
  • thermoforming apparatus 1 a vacuum vent hole 36 that communicates with the space S ⁇ b> 2 in the lower frame 2 and penetrates at least the frame bottom portion 12 inside the sealed frame 10 is formed.
  • a vacuum pump (not shown) or the like is connected to the end portion of the vacuum vent 36 opposite to the end portion opened to the space S2.
  • At least one vacuum vent 36 may be formed, but the number of vacuum vents 36 is not particularly limited.
  • thermoforming apparatus 1 examples include stainless steel (SUS), but are not particularly limited.
  • thermoforming method Next, a thermoforming method using the thermoforming apparatus 1 will be described.
  • the thermoforming method according to the present embodiment is a method of molding a sheet H softened by heating with respect to the base material B, or bonding the base material B to the base material B.
  • the thermoforming method of the present embodiment includes at least first to fifth steps described below.
  • the base material B is held on the base material holding part 16 of the base 6, and the base material B is accommodated inside the sealed frame 10. Specifically, as shown in FIG. 1, the hot plate 4 is separated upward from the frame peripheral wall portion 14. Further, the sheet gripping portion 8 before gripping the sheet H is disposed below the raised position P1. Such a state is set as an initial state. Subsequently, the base material B is installed in the base material holding part 16. At this time, in order to hold the base material B more stably, the base material B may be sucked from the upper surface of the base material holding part 16.
  • the sheet gripper 8 grips the outer peripheral edge of the sheet H over the entire circumference without any gap. That is, the outer peripheral edge of the sheet H is disposed in the width direction of the frame of the frame lower portion 8B in plan view. That is, the sheet H is disposed on the frame lower portion 8B so that the outer peripheral edge of the sheet H is located between the outer peripheral edge and the inner peripheral edge of the frame of the frame lower portion 8B. Then, the frame upper part 8A is arranged from the upper surface of the sheet H in accordance with the position of the frame lower part 8B, and the sheet H is sandwiched between the frame upper part 8A and the frame lower part 8B. Thereby, as shown in FIG. 1, the sheet H is sandwiched between the frame upper part 8A and the frame lower part 8B in a state where the sheet H is stretched without slack.
  • FIG. 3 is a cross-sectional view of the thermoforming apparatus 1 according to the present embodiment, and shows a state in which the hot plate 4 is brought into contact with the sheet H. Specifically, the hot plate 4 is moved downward from the position shown in FIG. 1 (that is, in the direction of the arrow D2 shown in FIG. 3), and the outer peripheral portion of the heating surface 4p is placed on the frame peripheral wall portion 14 as shown in FIG. It is made to contact
  • seat H is arrange
  • the space S ⁇ b> 2 is sealed by the frame bottom 12 and the frame peripheral wall 14 of the lower frame 2 and the heat plate 4.
  • the pressure between the hot plate 4 and the sheet H is reduced, and the sheet H is adsorbed on the heating surface 4p to be heated.
  • the heating plate 4 is heated by the heater 31, the vacuum tank (not shown) is opened, and the sheet H is sucked in the direction of moving toward the heating surface 4 p of the heating plate 4 through the vent hole 33. To do.
  • the sheet H is adsorbed on the heating surface 4p of the hot plate 4, and the adsorbed sheet H is heated.
  • the space S2 in the lower frame 2 is decompressed by suction through the vacuum vent 36, and the sheet gripping portion 8 is moved to the lowered position P2.
  • a vacuum tank connected to the vacuum vent 36 is operated, and vacuum suction is performed through the vacuum vent 36 in a direction in which the sheet H moves downward.
  • the air in the space S2 below the sheet H is sucked in the direction of the arrow D1 shown in FIG. 1, and the space S2 is decompressed to be in a high vacuum state.
  • the moving unit 26 of the elevating mechanism 22 is moved downward by a driving unit (not shown), and the sheet gripping unit 8 is moved from the raised position P1 to the lowered position P2 at an appropriate speed.
  • the sheet H exhibits flexibility and adhesiveness due to heating from the hot plate 4, and therefore the sheet H moves from the upper surface toward the lower surface as the sheet gripping portion 8 is lowered.
  • the surface R of the base material B is coated.
  • FIG. 4 is a cross-sectional view of the thermoforming apparatus 1 of the present embodiment, showing a state immediately after the sheet gripping portion 8 is lowered to the lowered position P2.
  • the side surface 16c of the base material holding portion 16 of the base 6 the upper surface 40a inside the sealing frame, the side surface 18d inside the outer peripheral wall portion 18, and the sheet A sealed space W surrounded by the bottom surface of H is formed.
  • the sealed space W is formed to be surrounded by the inner wall surface of the recess 21 and the bottom surface of the sheet H.
  • FIG. 5 is a cross-sectional view of the thermoforming apparatus 1 of the present embodiment, showing a state in which the sealed space W is sucked after the sheet gripping portion 8 is lowered to the lowered position P2.
  • the sheet H is sucked downward and sucked to the suction surface 42 as shown in FIG.
  • the suction surface 42 passes from the lower end of the base material B through the boundary x between the base material B and the base material holding portion 16 of the base 6 to the upper surface 40 a in the sealed frame and the inner side surface 18 d of the outer peripheral wall portion 18. It is formed to expand continuously.
  • the sealed space S2 between the sheet H and the heating surface 4p of the hot plate 4 may be pressurized.
  • the sheet H adheres more strongly to the suction surface 42.
  • the sheet H is cut at the boundary x with a cutting device (not shown). Subsequently, the hot plate 4 is moved upward and further moved in the lateral direction. And the base material B which coat
  • a molded product is completed, and a series of thermoforming operations are completed.
  • thermoforming apparatus 1 As described above, according to the thermoforming apparatus 1 of the present embodiment, when the sheet gripping portion 8 reaches the lowered position P2 in the airtight space S2 by vacuum suction from the vacuum vent 36, the sealed space W is formed. It is formed. When the inside of the sealed space W is sucked through the vacuum vent 36, the degree of vacuum in the sealed space W is further increased, and the sheet H is sucked by the suction surface 42. By adsorbing the sheet H to the adsorbing surface 42, the adhesion between the base material B and the sheet H at the entrained portion can be increased. Therefore, without removing air and impurities between the base material B and the sheet H, the effect of removing bubbles and impurities in the molded product can be enhanced.
  • the sealing frame 10 can be provided with a buffer function for the sheet gripping portion 8 moved to the lowered position P2 by the seal member 38, and the sheet gripping portion 8
  • the airtightness of the sealed space W can be enhanced by bringing the sealed frame 10 into close contact.
  • the sealed frame inner upper surface 40 a is provided at a position lower than the outer peripheral upper edge of the base material holding unit 16 and the upper end surface 10 a of the sealed frame 10. Therefore, the sheet H can be covered and rolled up to the boundary x and the outer edge of the bottom surface (back surface) of the base material B. Thereby, peeling of the sheet
  • the base 6 extends to the outer peripheral side of the base material holding portion 16, and the concave portion 21 is formed on the outer periphery of the base material holding portion 16.
  • the outer peripheral wall portion 18 of the recess 21 is provided inside the sealing frame 10. Therefore, because the bottom surface of the recess 21 is higher than the plate surface 12a of the frame bottom portion 12, and because the inner side surface 18d of the outer peripheral wall portion 18 is positioned on the inner side than the inner side surface of the sealing frame 10, The time required for reducing the sealed space W and increasing the degree of vacuum in the sealed space W can be shortened.
  • the degree of vacuum in the sealed space W is further increased and the sheet H is adsorbed on the adsorption surface 42.
  • seat H is improved, and the penetration
  • thermoforming method which concerns on this embodiment, in the 5th process, by pressurizing sealed space S2 between the sheet
  • the adhesion can be further increased.
  • the sealing member 38 may be provided on the upper end surface of the outer peripheral wall portion 18 of the base 6, and the outer peripheral wall portion 18 may also serve as the sealing frame 10.
  • the base 6 may not be extended to the outer peripheral side of the base material holding part 16, and the base 6 may be constituted by the base material holding part 16.
  • the sealing frame 10 is provided on the plate surface 12 a of the frame bottom portion 12 so as to be separated from the base material holding portion 16.
  • the upper surface 40a of the sealing frame is formed by the side surface 16c of the base material holding portion 16, the plate surface 12a of the frame bottom portion 12 interposed between the base material holding portion 16 and the sealing frame 10, and the inner side surface of the sealing frame 10. Composed.
  • the configuration of the lifting mechanism 22 is not limited to the configuration described above. That is, the elevating mechanism 22 includes a moving part 26 and a support part 27, and the moving part 26 may be connected to the frame peripheral wall part 14 so that it can be moved up and down along the frame peripheral wall part 14. It may be said.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Appareil de thermoformage, qui sert au formage en moule d'une feuille par rapport à un matériau de base ou à la liaison de ladite feuille audit matériau de base, muni : d'un cadre inférieur, qui présente une paroi de cadre périphérique et un fond de cadre dans lequel un trou de ventilation de vide est formé et qui constitue un espace pour loger le matériau de base ; une plaque chauffante, qui présente une surface chauffante et qui est configurée afin que la surface chauffante entre en contact étroit avec le bord supérieur du mur de cadre périphérique ; une base avec une section de maintien de matériau de base capable de maintenir le matériau de base ; un cadre de fermeture hermétique, qui est prévu afin de faire saillie depuis la surface de réglage de base du fond de cadre et, en une vue en plan, entoure la circonférence entière de la section de maintien du matériau de base ; et une section de saisie de feuille pour saisir le bord périphérique de la feuille sans espaces sur son périmètre entier, la section étant prévue à l'intérieur du cadre inférieur afin d'être verticalement mobile entre une position élevée dans laquelle la feuille est chauffée par la plaque chauffante et une position abaissée dans laquelle la section de saisie de feuille se trouve en contact étroit avec le bord supérieur du cadre de fermeture hermétique. L'appareil de thermoformage est configuré afin que lorsque la section de saisie de feuille se trouve en contact étroit avec le bord supérieur du cadre de fermeture hermétique : un espace hermétiquement fermé entouré de la feuille et du cadre de fermeture hermétique soit formé ; l'orifice de ventilation de vide se trouve en communication avec l'espace à l'intérieur du cadre inférieur et passe à travers au moins le fond du cadre sur l'intérieur du cadre de fermeture hermétique et s'ouvre sur la surface supérieure à l'intérieur du cadre de fermeture hermétique ; et avec l'espace hermétiquement formé, un vide est constitué à travers le trou de ventilation de vide.
PCT/JP2016/062518 2015-04-21 2016-04-20 Appareil de thermoformage et procédé de thermoformage WO2016171175A1 (fr)

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Application Number Priority Date Filing Date Title
JP2015-086724 2015-04-21
JP2015086724A JP5791842B1 (ja) 2015-04-21 2015-04-21 熱成形装置及び熱成形方法

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WO2016171175A1 true WO2016171175A1 (fr) 2016-10-27

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TW (1) TWI709476B (fr)
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
JP7317410B1 (ja) 2022-08-05 2023-07-31 株式会社浅野研究所 熱成形装置

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