WO2022181487A1 - 構造体の製造方法及びパネル - Google Patents
構造体の製造方法及びパネル Download PDFInfo
- Publication number
- WO2022181487A1 WO2022181487A1 PCT/JP2022/006665 JP2022006665W WO2022181487A1 WO 2022181487 A1 WO2022181487 A1 WO 2022181487A1 JP 2022006665 W JP2022006665 W JP 2022006665W WO 2022181487 A1 WO2022181487 A1 WO 2022181487A1
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- WIPO (PCT)
- Prior art keywords
- pinch
- mold
- burr
- split
- resin sheet
- Prior art date
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Images
Classifications
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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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
-
- 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
- B29C51/006—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 for making articles having hollow walls
-
- 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
-
- 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
- B29C51/105—Twin sheet thermoforming, i.e. deforming two parallel opposing sheets or foils at the same time by using one common mould cavity and without welding them together during thermoforming
-
- 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
- B29C51/265—Auxiliary operations during the thermoforming operation
-
- 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
- B29C51/266—Auxiliary operations after the thermoforming operation
- B29C51/268—Cutting, rearranging and joining the cut 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
- B29C51/30—Moulds
- B29C51/32—Moulds having cutting means
-
- 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
- B29C51/30—Moulds
- B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
Definitions
- the present invention relates to a structure manufacturing method and a panel that can be bent via a hinge.
- Patent Literature 1 discloses a method of molding a resin panel using a mold having a pinch-off portion surrounding a cavity portion.
- a core material made of, for example, a foam, a resin sheet covering the core material, and a skin material made of, for example, a nonwoven fabric are placed in the cavity, and these are integrated in the cavity.
- the molded body molded in this way has a molded body main body molded in the cavity portion and a burr portion arranged outside the cavity portion.
- Patent Document 1 discloses a method of cutting burrs using a movable part attached to a mold.
- the movable part of Patent Document 1 is configured to cut the burr part from the resin sheet forming the main body of the molded body by driving it away from the mold.
- Patent Literature 2 discloses a method of manufacturing a resin structure using a mold and an outer frame arranged around the mold.
- the outer frame of Patent Literature 2 advances so as to protrude from the mold, contacts the hanging resin sheet, and can adsorb the resin sheet.
- a space (cavity) between the resin sheet and the mold becomes a closed space in a state where the outer frame adsorbs the resin sheet. Therefore, by reducing the pressure in this space, it becomes possible to shape the resin sheet into a mold.
- Patent Literature 3 discloses a resin panel having a thin hinge portion.
- the present invention has been made in view of such circumstances, and provides a structure manufacturing method that can more reliably cut burrs.
- Patent Document 1 (Second viewpoint) In Patent Document 1, a pinch-off portion is formed at the end of the mold, and the movable portion abuts against the pinch-off portion when the movable portion is positioned at the initial position. Therefore, in Patent Document 1, the cutting line of the burr portion is at a position corresponding to the pinch-off portion.
- the shape of the pinch-off portion is determined according to the shape of the compact, but if the movable portion is not smoothly connected to the portion that hits the pinch-off portion, the cutting line will be distorted. , the burr may become difficult to cut.
- the present invention has been made in view of such circumstances, and provides a method of manufacturing a structure that can suppress the difficulty of cutting the burr.
- the outer frame needs to be retracted to some extent from the advanced position in order to properly shape the resin sheet into the mold. Depending on the amount of retraction of the outer frame, the shape of the mold, etc., it becomes difficult for the resin sheet to follow the mold surface, and the resin sheet may peel off from the mold surface or the outer frame, resulting in molding defects.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a structure manufacturing method capable of suppressing molding defects.
- the present invention has been made in view of such circumstances, and provides a panel in which the bendability of the hinge portion is improved.
- a structure manufacturing method includes a molding step, a burr forming step, and a cutting step.
- the mold has a pair of first and second split molds and a movable part, each of the first and second split molds has a cavity part and a pinch-off part, and the movable part is , attached to be movable relative to the first and second split molds, the movable part having a suction part and an engaging part, and the molded body comprising a molded body and a cutting line , and a burr portion, wherein the molded body body is molded within the cavity portion in the molding step, the cutting line is crushed by the pinch-off portion in the molding step, and the burr portion is formed by the cutting line is connected to the molded body body via and provided in the movable portion, and in the burr portion forming step, the burr portion is sucked to the engaging portion via the suction portion to remove the burr forming a portion on the engaging portion, and in the cutting step.
- the burr in the burr forming step, the burr is sucked to the engaging portion of the movable portion via the suction portion.
- the burr portion is formed on the movable portion, and the burr portion is more reliably engaged with the movable portion. Therefore, when the movable portion is moved relative to the first and second split molds, the burr portion is prevented from sliding with respect to the movable portion, and the burr portion moves so as to follow the movable portion. As a result, the burrs are more reliably cut off from the molded body.
- the first split mold has an end surface portion
- the movable portion has an abutment surface portion
- the burr forming step the abutment surface portion is abutted against the end surface portion.
- a method is provided.
- the mold further has a sealing member, and the method is provided in which the sealing member is attached to the end surface portion or the abutting surface portion.
- the first split mold has a first outer portion, the first outer portion is formed with the pinch-off portion of the first split mold, and the first outer portion includes the end face portion is formed, the second mold split has a second outer portion, the second outer portion is formed with the pinch-off portion of the second mold split, and the second outer portion comprises the first and
- a method is provided in which the second split mold is arranged to face the first outer part in the opening and closing direction.
- the method is provided, wherein the molded article has a resin sheet and a skin material, and the skin material is arranged outside the resin sheet.
- a vacuum suction hole is formed in each of the first and second split molds, the vacuum suction hole is formed in the cavity, and the vacuum suction hole is adapted to remove the resin sheet.
- the skin material arranged in the cavity portion is formed into the first and second split molds.
- the vacuum suction holes are provided along a single mold half and are not formed in the first outer portion of the first mold half.
- a skin relief space is formed between the first outer portion and the second outer portion, and in the molding step, an end portion of the skin material is disposed in the skin relief space.
- a method for manufacturing a structure comprises a molding step, an engagement step, and a cutting step, wherein the molding step uses a mold to mold a molded body, and the mold is , a pair of first and second split molds and a movable portion, each of the first and second split molds having a cavity portion, an inner pinch-off portion, and an outer pinch-off portion;
- the inner pinch-off portion is connected to the cavity portion, the outer pinch-off portion is provided at a position further away from the cavity portion than the inner pinch-off portion, and the movable portion includes first and second split metals.
- the movable part has an engaging part
- the molded body includes a molded body, an inner line part, an inner burr part, an outer line part
- the molded body body is molded within the cavity portion in the molding step, the inner line portion is crushed by the inner pinch-off portion in the molding step, and the inner burr portion is:
- the outer line portion is formed between the inner line portion and the outer line portion, the outer line portion is crushed by the outer pinch-off portion in the molding step, the outer burr portion is connected to the outer line portion, and the In the engaging step, the outer burr portion is engaged with the engaging portion of the movable portion, and in the cutting step, the movable portion is moved to the first position while the outer burr portion is engaged with the engaging portion. and cutting the outer burr portion from the inner burr portion along the outer line portion by moving relative to the second split mold.
- each of the first and second split molds has an inner pinch-off portion connected to the cavity and an outer pinch-off portion provided at a position further away from the cavity than the inner pinch-off.
- the outer pinch-off portion is a portion that is not connected to the cavity portion and that separates the unnecessary inner and outer burrs. Therefore, unlike the inner pinch-off portion, the outer pinch-off portion is restrained from being restricted in conformity to the shape of the peripheral edge portion of the compact body. In this way, in the present invention, since the restriction is suppressed, the pinch-off portion can be easily set to a shape that takes into consideration the connection with the movable portion, and as a result, it is possible to suppress the difficulty of cutting the burr portion. can do.
- the method is provided, wherein the outer pinch-off portion is formed along the engaging portion when the first split mold and the movable portion are viewed in plan.
- the method is provided, wherein the surface of the top of said outer pinch-off portion coincides with the surface of the top of said engaging portion.
- the movable portion further has a suction portion, and in the engaging step, the outer burr portion is attracted to the engagement portion via the suction portion, and the outer burr portion is attracted to the engagement portion.
- a method is provided wherein shaping engages the outer flash portion with the engagement portion.
- the first split mold has an end surface portion
- the movable portion has an abutment surface portion
- in the engaging step with the abutment surface portion being abutted against the end surface portion
- a method is provided for sucking the outer burr portion to the engaging portion via the suction portion.
- the mold further has a sealing member, and the method is provided in which the sealing member is attached to the end surface portion or the abutting surface portion.
- the first split mold has a first outer portion, the first outer portion is formed with the inner pinch-off portion and the outer pinch-off portion of the first split mold, and the first outer portion
- the end surface portion is formed in the second split mold
- the second split mold has a second outer portion, and the inner pinch-off portion and the outer pinch-off portion of the second split mold are formed in the second outer portion.
- the second outer part is arranged to face the first outer part in the opening and closing direction of the first and second split molds.
- the method is provided, wherein the molded article has a resin sheet and a skin material, and the skin material is arranged outside the resin sheet.
- a vacuum suction hole is formed in each of the first and second split molds, the vacuum suction hole is formed in the cavity, and the vacuum suction hole is adapted to remove the resin sheet.
- the skin material arranged in the cavity portion is formed into the first and second split molds.
- the vacuum suction holes are provided along a single mold half and are not formed in the first outer portion of the first mold half.
- a skin relief space is formed between the first outer portion and the second outer portion, and in the molding step, an end portion of the skin material is disposed in the skin relief space.
- a method for manufacturing a structure using a mold and an outer frame includes a hanging step, an adsorption step, and a shaping step, and in the hanging step, the molten resin sheet is Depending on the front of the mold, the mold has a cavity portion, a pinch-off portion, and a chamfer portion, the chamfer portion being provided between the outer frame and the pinch-off portion, and In the direction from the pinch-off portion toward the outer frame, the resin sheet is formed so as to widen the distance from the hanging resin sheet, and in the adsorption step, the outer frame is advanced to adsorb the resin sheet with the outer frame, A closed space is formed between the outer frame, the resin sheet, and the mold, the outer frame is arranged around the mold, and is configured to be able to adsorb the resin sheet, and the shaping is performed. In the step, the outer frame is retracted, and the closed space is depressurized to form the resin sheet in the cavity, and the resin sheet moves
- the resin sheet is smoothly arranged along the chamfered portion when the resin sheet moves together with the outer frame in the shaping process. As a result, it is possible to prevent the resin sheet from peeling off from the mold and the outer frame, and to avoid the occurrence of molding defects.
- the method is provided, wherein the chamfered portion comprises a tapered surface.
- the method is provided, wherein the inclination angle of the tapered surface is 60 degrees or less.
- the outer frame is retracted to a rear end position of the chamfered portion.
- the method is provided, wherein in the shaping step, the retreat distance of the outer frame is 30 mm or more and 80 mm or less.
- the manufacturing method further uses a movable part, the manufacturing method further comprises a molding step, the mold has first and second split molds, and the movable part comprises a second mold.
- the second split mold It is configured to move relative to one split mold to cut a part of the resin sheet, and is attached around the first split mold, and the second split mold has the chamfered portion.
- the outer frame is arranged around the second split mold, and in the molding step, the first and second split molds are closed, and in a state where the molding step is completed, at least the movable portion
- a method is provided in which a portion is located closer to the outer frame than the position of the front end of the chamfer.
- the method is provided, wherein the chamfered portion has a width of 10 mm or more and 63 mm or less in the opening/closing direction of the mold.
- the method is provided, wherein the chamfered portion has a width of 5.7 mm or more and 70 mm or less in a direction from the pinch-off portion toward the outer frame.
- a panel including a resin panel body, wherein the resin panel body includes a first main body portion, a second main body portion, and a hinge portion which are integrally provided, and the hinge portion includes a hinge piece. and a slit, wherein the hinge piece rotatably connects the first body portion and the second body portion, and the slit is provided next to the hinge piece to connect the first body portion and the hinge piece.
- a panel is provided separating the second body portion.
- the bendability of the hinge can be improved by providing the slit.
- a skin material is provided, and the skin material is attached to the first body portion and the second body portion across the hinge portion.
- L S /L 0 is 0.50 to 0.50 when the length across both ends of the hinge portion is the total length L 0 and the total length of the slits is the total length of the slits L S . 99.
- the hinge pieces include end hinge pieces, and the end hinge pieces are provided at both ends of the hinge portion.
- said hinge pieces include intermediate hinge pieces, said intermediate hinge pieces being provided between said end hinge pieces.
- FIG. 1A is a perspective view of a resin panel 1 according to embodiments of the first to third aspects.
- FIG. 1B is a perspective view of a core material 3 according to embodiments of the first to third aspects.
- FIG. 2A is an exploded perspective view of the core material 3 according to the embodiments of the first to third aspects.
- FIG. 2B is an enlarged view of area B in FIG. 2A.
- FIG. 2C is an end view of the reinforcing member 3c.
- FIG. 3 is a front view showing the configuration of the molding machine 10 according to the embodiment of the first and second aspects (the first and second split molds 21 and 22 and members in the vicinity thereof are cross-sectional views). 3, illustration of the drive mechanism 24 shown in FIG. 5 is omitted.
- FIG. 1A is a perspective view of a resin panel 1 according to embodiments of the first to third aspects.
- FIG. 1B is a perspective view of a core material 3 according to embodiments of the first to third aspects.
- FIG. 2A
- FIG. 4A is a perspective view of an insertion device 19 according to embodiments of the first and second aspects
- FIG. 4B shows a core material 3 attached to the insertion device 19
- FIG. 5 is a perspective view of a state in which the first and second split molds 21 and 22 according to the embodiment of the first and second aspects are opened.
- FIG. 6 is an enlarged view of area A shown in FIG.
- FIG. 7 is a perspective view of the first and second split molds 21 and 22 viewed from a direction different from that of FIG.
- FIG. 8 is an enlarged view of area A shown in FIG.
- FIG. 9A is a perspective view of a pair of movable parts 23 according to embodiments of the first and second aspects.
- FIG. 9B is an enlarged view of area B shown in FIG. 9A.
- FIG. 10A and 10B are front views showing the operation of the movable part 23 when performing the first cutting step according to the embodiment of the first and second aspects.
- FIG. 11 is an explanatory diagram corresponding to FIG. 3 for explaining the molding process according to the embodiment of the first and second aspects.
- FIG. 12 is an end view showing a state in which the first and second split molds 21 and 22 are closed and the movable part 23 is located at the initial position in the embodiment of the first and second aspects. be.
- FIG. 12 corresponds to the AA end shown in FIG.
- FIG. 13 shows the state at the start of the first cutting step after the engaging step (burr forming step) in the embodiments of the first and second aspects.
- FIG. 13 is an end view corresponding to area A shown in FIG. FIG.
- FIG. 14 is an operation explanatory diagram of the first cutting step according to the embodiment of the first and second aspects.
- FIG. 14 shows how the movable portion 23 moves away from the first split mold 21 and the outer burr portion 5bc2 is cut off from the inner burr portion 5bc1.
- FIG. 15 shows a front view of molded bodies 5 according to embodiments of the first to third aspects.
- 16 is a front view schematically showing a state in which the outer burr portion 5bc2 of the molded body 5 shown in FIG. 13 is cut from the inner burr portion 5bc1 in the first and second viewpoints.
- FIG. 14 shows how the movable portion 23 moves away from the first split mold 21 and the outer burr portion 5bc2 is cut off from the inner burr portion 5bc1.
- FIG. 15 shows a front view of molded bodies 5 according to embodiments of the first to third aspects.
- 16 is a front view schematically showing a state in which the outer burr portion 5bc2 of the molded body 5 shown
- FIG. 16 shows a state in which the outer burr portion 5bc2 is pulled by the movable portion 23 and torn along the right line 5cr and the left line 5cl in the first and second viewpoints.
- 16 is a front view schematically showing a state in which the outer burr portion 5bc2 of the molded body 5 shown in 1 is cut from the inner burr portion 5bc1 by performing the first cutting step in the third viewpoint.
- FIG. 17 is an end view of first and second split molds 21 and 22 according to modifications of the embodiment of the first and second aspects.
- FIG. 17 shows the state at the start of the first cutting step.
- FIG. 18 is an operation explanatory diagram of the first cutting step in the modified example of the embodiment of the first and second aspects.
- FIG. 19 is a cross-sectional view of first and second split molds 21 and 22 used when manufacturing a resin panel having hinge portions in the embodiments of the first and second aspects.
- FIG. 19 is a cross-sectional view taken along a plane passing through the hinge portion of the resin panel and parallel to the direction in which the hinge portion extends.
- FIG. 20A is an exploded perspective view of the first split mold 21 and the movable part 23 according to Modification 2 of the embodiment of the first and second aspects.
- FIG. 20B is an exploded perspective view seen from a direction different from that of FIG. 20A.
- FIG. 20C shows a state in which the movable portion 23 is supported by the support portion 21f.
- FIG. 21 is a front view (the first and second split molds 21 and 22, the outer frame 31, the core material 3, etc. are cross-sectional views) showing the configuration of the molding machine 10 according to the embodiment of the third aspect.
- FIG. 22 shows the first and second split molds 21 and 22 and the outer frames 31 and 32 showing the opened state of the first and second split molds 21 and 22 according to the embodiment of the third aspect.
- is a perspective view of the. 23 is an enlarged view of area A shown in FIG. 22.
- FIG. 24 is a perspective view of the first and second split molds 21, 22 and the outer frames 31, 32 viewed from a direction different from that of FIG. 22.
- FIG. 28 to 34 show the end faces of the first and second split molds 21, 22, etc.
- FIG. 26 and 27 show the end faces of the first and second split molds 21, 22, etc. cut along a vertical plane passing through the upper and lower points P2 shown in FIG. 25A to 25C are front views showing the operation of the movable part 23 when performing the first cutting step according to the embodiment of the third aspect.
- FIG. 26 shows a state in which the covering material mounting step according to the embodiment of the third aspect is completed and the hanging step is being performed.
- FIG. 27 shows a state in which the adsorption step according to the embodiment of the third aspect is being performed.
- FIG. 28 is a horizontal end view of the first and second split molds 21, 22, etc. shown in FIG. 29 is an enlarged view of area A shown in FIG. 28.
- FIG. 30 shows a state in which the shaping step according to the embodiment of the third aspect has been performed.
- FIG. 31 shows a state in which the core material welding process according to the embodiment of the third aspect is performed.
- FIG. 32 shows a state in which the molding process according to the embodiment of the third aspect is performed.
- FIG. 33 is an enlarged view of essential parts of the first and second split molds 21, 22 and the like shown in FIG. In FIG.
- FIG. 34 shows a state in which the first cutting step according to the embodiment of the third aspect has been performed.
- FIG. 34 shows how the movable portion 23 moves away from the first split mold 21 and the outer burr portion 5bc2 is cut off from the inner burr portion 5bc1.
- FIG. 35A is a plan view of the panel viewed from the surface side (skin material side), and
- FIG. 35B is a side view of the panel.
- FIG. 36A is a plan view of the panel viewed from the rear side
- FIG. 36B is a cross-sectional view taken along line AA.
- 37 is an enlarged plan view of portions B1-B3 of FIG. 36 on the back side of the panel
- FIG. FIG. 38 is a cross-sectional view taken along line CC of FIG. 37
- FIG. 4 is a cross-sectional view showing an example of how the hinge portion bends
- 1 is a configuration diagram of a molding machine 10 that can be used to manufacture a panel (metal molds 121 and 131 and members in the vicinity thereof are longitudinal sectional views).
- FIG. FIG. 41 is a cross-sectional view showing the state when the mold is closed at the position of broken line D in FIG. 40;
- Resin Panel 1 As shown in FIG. 1 , a resin panel 1 (an example of a “structure”) according to an embodiment of the present invention is covered with a substantially rectangular resin molding 2 in plan view. panel.
- the resin panel 1 includes a hollow resin molded body 2 and a core material 3 , and the core material 3 is arranged inside the resin molded body 2 .
- a skin material 4 is attached to one side of the resin molding 2 so as to extend to the parting line PL.
- the skin material 4 is, for example, a non-woven fabric, and is integrally molded with the resin molding 2 during molding. Both surfaces of the core material 3 are in close contact with the resin molding 2 .
- the core material 3 is composed of bases 3a and 3b and a reinforcing member 3c connecting them.
- the reinforcing member 3c is an elongated member with a constant cross-sectional shape.
- the substrates 3a and 3b are made of foam, for example.
- the reinforcing member 3c has a substantially H shape and is composed of an upper wall 3c1, a lower wall 3c2, and a column portion 3c3 connecting them. Both ends of the upper wall 3c1 in the width direction are provided with projections 3c11 projecting toward the lower wall 3c2. Both ends of the lower wall 3c2 in the width direction are provided with projections 3c21 projecting toward the upper wall 3c1. By engaging the protrusions 3c11 and 3c21 with the bases 3a and 3b, the bases 3a and 3b and the reinforcing member 3c are integrated. At the ends of the substrates 3a and 3b, concave portions 3a1 and 3b1 are provided which are one step lower. The upper and lower surfaces of are substantially flush with each other.
- the molding machine 10 includes a pair of sheet forming devices 14, first and second split molds 21 and 22, a movable portion 23, and a drive mechanism 24.
- the hopper 12 is used to charge the raw material resin 11 into the cylinder 13 a of the extruder 13 .
- the raw material resin is, for example, a thermoplastic resin such as polyolefin, and examples of polyolefin include low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymers and mixtures thereof.
- the raw material resin 11 may include a recycled raw material produced by pulverizing burrs with a pulverizer.
- the raw material resin 11 is fed from the hopper 12 into the cylinder 13a, and then heated in the cylinder 13a to be melted into a molten resin. Further, it is conveyed toward the tip of the cylinder 13a by the rotation of the screw arranged in the cylinder 13a.
- the screw is arranged in the cylinder 13a, and conveys the molten resin while kneading it by its rotation.
- a gear device is provided at the proximal end of the screw, and the screw is rotationally driven by the gear device.
- the raw material resin is extruded from the resin extrusion port of the cylinder 13 a and injected into the accumulator 17 through the connecting pipe 15 .
- the accumulator 17 has a cylinder 17a and a piston 17b slidable inside the cylinder 17a, and the molten resin 11a can be stored in the cylinder 17a.
- the piston 17b By moving the piston 17b after a predetermined amount of the molten resin 11a is stored in the cylinder 17a, the molten resin 11a is extruded through the connecting pipe 16 through a slit provided in the T-die 18, and is allowed to hang down to be in a molten state.
- Resin sheets p1 and p2 are formed.
- the resin sheets p1 and p2 are guided between the first and second split molds 21 and 22.
- the first and second split molds 21 and 22 can be split at the parting surfaces that abut when the mold is closed, and the compact 5 is formed by the first and second split molds 21 and 22. . That is, in the molding process, the molded body 5 is formed using a pair of splittable first and second split molds 21 and 22 .
- a skin relief space sp (see FIG. 13) is formed between the first and second split molds 21 and 22 . The edge of the skin material 4 is disposed in the skin escape space sp during molding.
- the first split mold 21 includes a main body portion 21a1, a pair of first outer side portions 21a2, and an end surface portion 21a3.
- a cavity portion cvt (see FIG. 12) is formed in the body portion 21a1.
- the cavity part cvt is a closed space formed between the first split mold 21 and the second split mold 22. is the space in which is molded.
- the first outer portion 21a2 is connected to the widthwise end portions (left and right end portions) of the main body portion 21a1.
- the width direction is a direction perpendicular to the opening/closing direction of the first and second split molds 21 and 22 and perpendicular to the vertical direction.
- a surface against which the movable portion 23 abuts is formed on the end surface portion 21a3.
- the end surface portion 21a3 is formed on the side surface of the first outer portion 21a2.
- the first split mold 21 is provided with a large number of vacuum suction holes hl (see FIG. 13), and the resin sheet p1 is vacuum-sucked and formed into a shape along the inner surface 21b of the first split mold 21. It is possible to In addition, the inner surface 21b faces the cavity portion cvt.
- the first split mold 21 has a pinch-off portion 21d, and the pinch-off portion 21d is provided so as to surround the cavity portion cvt.
- the pinch-off portion 21d is a protrusion formed so as to protrude from the first split mold 21 side toward the second split mold 22 side.
- the pinch-off portion 21d has an inner pinch-off portion 21d1 and an outer pinch-off portion 21d2. As shown in FIG. 13, the inner pinch-off portion 21d1 and the outer pinch-off portion 21d2 are formed in the first outer portion 21a2.
- the inner pinch-off portion 21d1 is provided so as to face the cavity portion cvt.
- the inner pinch-off portion 21 d 1 is formed in a shape corresponding to the shape of the resin panel 1 .
- the inner pinch-off portion 21d1 has a flat top surface. Further, in the embodiment, the inner pinch-off portion 21d1 extends in a bent straight line.
- the outer pinch-off portion 21d2 is provided at a position further away from the cavity portion cvt than the inner pinch-off portion 21d1.
- the outer pinch-off portion 21 d 2 is formed in a shape that matches the shape of the movable portion 23 .
- the outer pinch-off portion 21d2 is an engaging portion 23d closest to the first split mold 21 among the engaging portions 23d (see FIG. 8) of the movable portion 23, which will be described later (hereinafter referred to as the closest engaging portion). 23d).
- the closest engaging portion 23d
- the outer pinch-off portion 21d2 is the closest It is formed along the engaging portion 23d.
- the outer pinch-off portion 21d2 is formed parallel to the nearest engaging portion 23d when the first split mold 21 and the movable portion 23 are viewed from above. As a result, it is possible to prevent the cutting line of the burr from being distorted and to prevent the burr from being difficult to cut.
- the nearest engaging portion 23d is described as being arranged at the end of the facing surface portion 23a of the movable portion 23, which will be described later, but it is not limited to this.
- the closest engaging portion 23 d may be arranged at a position inside the position of the end of the facing surface portion 23 a in the driving direction of the movable portion 23 .
- the surface of the top of the outer pinch-off portion 21d2 matches the surface of the top of the closest engaging portion 23d. That is, when the surface of the top of the outer pinch-off portion 21d2 is extended, it overlaps the surface of the top of the nearest engaging portion 23d. Therefore, the surface of the top of the outer pinch-off portion 21d2 is smoothly connected to the surface of the top of the nearest engaging portion 23d. Therefore, in the embodiment, it is possible to more effectively prevent the cutting line of the burr from being distorted, and to effectively suppress the difficulty of cutting the burr.
- the inner pinch-off portion 21d1 has a shape corresponding to the nearest engaging portion 23d, so the outer pinch-off portion 21d2 is formed parallel to the inner pinch-off portion 21d1.
- the shape of the outer pinch-off portion 21d2 need not be limited to the shape of the inner pinch-off portion 21d1.
- the shape of the outer pinch-off portion 21d2 may be determined according to the shape of the movable portion 23. As shown in FIG. In other words, while the shape of the inner pinch-off portion 21d1 is limited by the shape of the resin panel 1, the outer pinch-off portion 21d2 is not limited to the shape of the resin panel 1, and has a shape that matches the shape of the movable portion 23. can be adopted.
- the first split mold 21 has a male projection 21e.
- the male projection 21e is provided at a position facing a female projection 19c of the insertion device 19, which will be described later.
- the male projection 21 e can slide relative to the first split mold 21 and be accommodated in the first split mold 21 .
- the second split mold 22 includes a body portion 22a1, a pair of second outer portions 22a2, and a pair of facing portions 22a3.
- a cavity portion cvt (see FIG. 12) is formed in the body portion 22a1.
- the second outer portion 22a2 is connected to the widthwise end portions (left and right end portions) of the main body portion 22a1.
- each facing portion 22a3 is connected to an end portion in the width direction of each second outer portion 22a2.
- the facing portion 22 a 3 is arranged to face the movable portion 23 .
- a large number of vacuum suction holes hl are provided in the second split mold 22, and the resin sheet p2 is vacuum-sucked and formed into a shape along the inner surface 22b of the second split mold 22. It is possible to In addition, the inner surface 22b faces the cavity portion cvt.
- the second split mold 22 has a pinch-off portion 22d, and the pinch-off portion 22d is provided so as to surround the cavity portion cvt.
- the pinch-off portion 22d is a protrusion formed so as to protrude from the second split mold 22 side toward the first split mold 21 side.
- the pinch-off portion 22d has an inner pinch-off portion 22d1 and an outer pinch-off portion 22d2. As shown in FIG. 13, the inner pinch-off portion 22d1 and the outer pinch-off portion 22d2 are formed in the second outer portion 22a2.
- the inner pinch-off portion 22d1 and the outer pinch-off portion 22d2 have the same configuration as the inner pinch-off portion 21d1 and the outer pinch-off portion 21d2.
- the inner pinch-off portion 22d1 is provided so as to face the cavity portion cvt.
- the inner pinch-off portion 22d1 is formed in a shape corresponding to the shape of the resin panel 1. As shown in FIG. Specifically, the inner pinch-off portion 22d1 has a flat top surface. In addition, the inner pinch-off portion 22d1 extends in a bent straight line.
- the outer pinch-off portion 22d2 is provided at a position farther from the cavity portion cvt than the inner pinch-off portion 22d1.
- the outer pinch-off portion 22d2 is formed in a shape that matches the shape of the movable portion 23, similarly to the outer pinch-off portion 21d2.
- the surface of the top of the outer pinch-off portion 22d2 matches the surface of the top of the nearest engaging portion 23d. Therefore, the surface of the top of the outer pinch-off portion 22d2 is smoothly connected to the surface of the top of the nearest engaging portion 23d.
- the skin relief space sp is a space in which an extra skin 4 is arranged. In addition, an end portion of the skin material 4 is arranged in the skin escape space sp.
- a skin relief space sp is formed between the first and second split molds 21 and 22 .
- the skin material relief space sp is a space between the first outer portion 21a2 and the second outer portion 22a2, and includes the inner pinch-off portion 21d1 and the inner pinch-off portion 22d1, and the outer pinch-off portion 21d2 and the outer side. This is the space between the pinch-off portion 22d2.
- the skin material 4 used during molding is larger than the size of the cavity cvt. As a result, excess skin material 4 is generated during molding.
- the excess skin material 4 is cut off by the operator in a post-process. Moreover, although the raw material resin 11 forming the burr portion can be reused, if the excess skin material 4 adheres to the resin sheet p1 corresponding to the raw material resin 11, the resin sheet p1 will be firmly adhered to the skin. It may become difficult to separate the material 4 from the resin sheet p1. If the burr cannot be peeled off, the burr is discarded, and the resin cannot be reused. Therefore, in the embodiment, the skin material escape space sp is formed in the first and second split molds 21 and 22 .
- Width dimension w1 is, for example, 15.0, 15.5, 16.0, 16.5, 17.0, 17.5, 18.0, 18.5, 19.0, 19.5, 20.0 , 20.5, 21.0, 21.5, 22.0, 22.5, 23.0, 23.5, 24.0, 24.5, 25.0 (mm), Also, the width dimension w1 may be within a range between any two of the numerical values exemplified here.
- the depth dimension w2 of the skin material relief space sp is, for example, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0, 5.2, 5.4, 5. 6, 5.8, 6.0, 6.2, 6.4, 6.6, 6.8, 7.0, 7.2, 7.4, 7.6, 7.8, 8.0 ( mm), and the depth dimension w2 may be within a range between any two of the numerical values exemplified here.
- the first outer portion 21a2 is not provided with the vacuum suction hole hl. That is, the cavity portions cvt of the first and second split molds 21 and 22 are formed with the vacuum suction holes hl, but the first outer portion 21a2 is not provided with the vacuum suction holes hl. Thereby, it is possible to effectively suppress adhesion between the skin material 4 and the resin sheet p1.
- the second outer portion 22a2 is described as being provided with the vacuum suction hole hl, but the present invention is not limited thereto, and the second outer portion 22a2 may not be provided.
- the movable part 23 has a function of engaging with the burr and cutting the burr.
- the movable part 23 is provided so as to be relatively movable with respect to the first and second split molds 21 and 22 .
- the movable portion 23 is attached to the side of the first outer portion 21a2 of the first split mold 21.
- the movable portion 23 includes a facing surface portion 23a, an abutment surface portion 23b, a suction portion 23c, an engaging portion 23d, and a sealing member 23e.
- the facing surface portion 23a is provided so as to face the facing portion 22a3 of the second split mold 22. As shown in FIG. A plurality of engaging portions 23d are formed on the facing surface portion 23a.
- the abutting surface portion 23b is formed so as to abut against the end surface portion 21a3 of the first split mold 21. As shown in FIG. The abutment surface portion 23b is formed along the end surface portion 21a3. Therefore, when air is vacuum-sucked through the vacuum suction hole hl in a state in which the abutment surface portion 23b abuts against the end surface portion 21a3, the air flows from between the abutment surface portion 23b and the end surface portion 21a3. It is possible to suppress the flow into the part to be shaped.
- the portion where the resin is shaped is, for example, the inside of the cavity portion cvt, the gap between the burr portion and the surface of the engaging portion 23d, and the like.
- the suction portion 23c is a hole formed in the facing surface portion 23a, and is open to the area where the engagement portion 23d is formed.
- the burr portion (the outer burr portion 5bc2) is shaped into the engaging portion 23d by air being vacuum-sucked through the suction portion 23c.
- the burr portion (outer burr portion 5bc2) is more reliably caught on the movable portion 23, and the burr portion is prevented from slipping on the movable portion 23 when the movable portion 23 is driven.
- the burr portion when the movable portion 23 is driven, the burr portion appropriately follows the movable portion 23, and the burr portion can be cut more reliably.
- the vacuum suction system in the suction part 23 c is independent of the vacuum suction system of the vacuum suction hole hl of the first split mold 21 . This makes it possible to separately control the timing of vacuum suction of the suction portion 23c and the timing of vacuum suction of the vacuum suction hole hl, thereby avoiding deterioration of moldability.
- the engaging portion 23d has a function of engaging with the burr portion.
- the engaging portion 23 d is a protrusion formed to protrude toward the second split mold 22 . Since a plurality of engaging portions 23d are formed on the opposing surface portion 23a, the areas where the engaging portions 23d are formed are uneven. In the embodiment, it is assumed that the suction portion 23c is opened in the area between the two adjacent engaging portions 23d of the facing surface portion 23a, but the present invention is not limited to this. The suction portion 23c may open on the surface of the engaging portion 23d.
- the sealing member 23e is attached to the abutting surface portion 23b. Specifically, a groove is formed in the abutment surface portion 23b, and the seal member 23e is attached in the groove. As a result, it is possible to effectively prevent air from flowing from between the abutment surface portion 23b and the end surface portion 21a3 into the portion where the resin is shaped.
- the seal member 23e is attached to the abutment surface portion 23b, but the seal member 23e is not limited to this. It may be attached to the portion 21a3.
- the drive mechanism 24 is configured to drive the movable portion 23 .
- the drive mechanism 24 includes a pair of upper drive mechanisms 24a and a pair of lower drive mechanisms 24b, as shown in FIG.
- Each upper drive mechanism 24a and each lower drive mechanism 24b can be composed of, for example, a cylinder or the like.
- Each upper drive mechanism 24a and each lower drive mechanism 24b are provided across the first split mold 21 and the movable part 23, and each upper drive mechanism 24a and each lower drive mechanism 24b are arranged between the first split mold 21 and the movable part 23. It is fixed to the part 23 .
- the movable part 23 is moved by extending the cylinder of each upper drive mechanism 24a and the cylinder of each lower drive mechanism 24b.
- Each upper drive mechanism 24a and each lower drive mechanism 24b can be independently controlled. Therefore, as shown in FIGS. 10A and 10B, the driving mechanism 24 can move the upper portion of the movable portion 23 and then move the lower portion of the movable portion 23 . As a result, the force to tear the burr becomes local, and the movable portion 23 can smoothly tear the burr.
- Insertion device 19 The insertion device 19 is configured to be movable by a driving mechanism (not shown). As shown in FIG. 4A, the insertion device 19 comprises a base 19a, a suction pad 19b and a female projection 19c. Each member is held by a base 9a. The suction pad 9b is used to hold the core material 3 by suction. The female projection 19 c is capable of holding the skin material 4 and is used to attach the skin material 4 to the first split mold 21 .
- the resin panel 1 is obtained by removing burrs from a molded body 5 (see FIG. 15) described below.
- the molded body 5 is a molded body in a state after being molded with a mold and before the burrs are removed.
- the molded body 5 is constructed by connecting a molded body body 5a and a large burr portion 5b via a cutting line 5c provided so as to surround the molded body body 5a.
- the cutting line 5c corresponds to the portion crushed by the pinch-off portions 21d and 22d.
- the molded body 5a includes a portion (molded product 5d) corresponding to the resin panel 1 described above, a small burr portion 5e and an inner burr portion 5bc1 connected to the portion. consists of That is, the resin panel 1 can be obtained by removing the small burr portion 5e and the inner burr portion 5bc1 from the molded body main body 5a.
- the large burr portion 5b includes an upper burr portion 5bu positioned on the upper portion of the molded body 5a, a lower burr portion 5bb positioned on the lower portion of the molded body 5a, and between the upper burr portion 5bu and the lower burr portion 5bb. and an outer burr portion 5bc2 located at the .
- the outer burr portion 5bc2 is connected to the inner burr portion 5bc1 before being cut by the movable portion .
- the inner burr portion 5bc1 is composed of the resin sheets p1 and p2 and the skin material 4.
- the outer burr portion 5bc2 is composed of resin sheets p1 and p2. That is, the outer burr portion 5bc2 does not include the skin material 4.
- the skin material 4 is arranged so that the ends of the skin material 4 are positioned between the inner pinch-off portions 21d1, 22d1 and the outer pinch-off portions 21d2, 22d2.
- the cutting line 5c includes a left line 5cl (an example of an outer line portion), a right line 5cr (an example of an outer line portion), an upper line 5cu, and a lower line 5cb.
- the left line 5cl, the right line 5cr, the upper line 5cu, and the lower line 5cb are respectively when the molded body 5 is viewed from the mold closing direction of the second split mold 22 shown in FIG. 11 (direction of arrow C2 in FIG. 11). are arranged on the left side, the right side, the upper side, and the lower side of the molded body 5a.
- a first cutting step is performed in which the molded body 5 is cut along the right line 5cr and the left line 5cl by the first and second split molds 21 and 22 and the movable portion 23 . Then, a second cutting step of cutting the molded body 5 along the rest of the cutting line 5c (that is, the upper line 5cu and the lower line 5cb) after removing the molded body 5 from the first and second split molds 21 and 22 I do.
- the molded body body 5a is configured by connecting a molded product 5d (corresponding to the resin panel 1), a small burr portion 5e and an inner burr portion 5bc1 via a parting line 5f.
- the molded product main body 5a has a molded product 5d, a small burr portion 5e, an inner burr portion 5bc1, and part of the parting line 5f (the left line 5fl and the right line 5fr). Therefore, by cutting the molded product main body 5a along the parting line 5f over the entire circumference of the molded product 5d, the small burr portion 5e and the inner burr portion 5bc1 can be separated from the molded product 5d.
- the parting line 5f includes a left line 5fl (an example of an inner line portion), a right line 5fr (an example of an inner line portion), an upper line 5fu, and a lower line 5fb.
- the left line 5fl, the right line 5fr, the upper line 5fu, and the lower line 5fb are the molded body main body when the molded body 5 is viewed from the mold closing direction (arrow C2) of the second split mold 22 shown in FIG. Located on the left, right, top and bottom of 5a.
- the lower line 5cb of the cutting line 5c overlaps with the lower line 5fb of the parting line 5f.
- the upper line 5cu of the cutting line 5c is provided at a position adjacent to the upper side of the upper line 5fu of the parting line 5f. Therefore, the molded product 5d and the small burr portion 5e are connected via the upper line 5fu.
- the left line 5cl and the right line 5cr of the cutting line 5c are provided at positions laterally adjacent to the left line 5fl and the right line 5fr of the parting line 5f, respectively. Therefore, the molded product 5d and the inner burr portion 5bc1 are connected via the left line 5cl and the right line 5cr.
- the upper line 5fu of the parting line 5f is nonlinear. For this reason, for example, an operator needs to use a cutter to cut the molded body 5 along the upper line 5fu. Therefore, in the present embodiment, a linear upper line 5cu is provided at a position adjacent to the upper side of the upper line 5fu. Further, in the embodiment, the lower line 5fb of the parting line 5f is also linear. Such a straight line can be cut by using the cutter of the burr cutting device. After the left line 5cl and the right line 5cr are cut in this way, the upper line 5cu and the lower line 5cb are cut, and the compact body 5a is separated from the large burr portion 5b.
- the method of manufacturing the resin panel 1 of the present embodiment includes a skin material mounting process, a hanging process, a resin sheet shaping process, a core material welding process, a molding process, It comprises an engagement step, a first cutting step, a molding removing step, a second cutting step, and a post-step.
- the skin material 4 is mounted on the first split mold 21 .
- the female projection 19c is inserted in advance into a through hole formed in the skin material 4, and the skin material 4 is held by the insertion device 19 as shown in FIG.
- the female projection 19c and the male projection 21e are opposed to each other, they are engaged with each other. Move to the projection 21e.
- the skin material 4 is attached to the first split mold 21 .
- the resin sheets p1 and p2 extruded from the T die 18 are drooped between the first and second split molds 21 and 22, as shown in FIG.
- a resin sheet p1 is suspended between the core material 3 and the skin material 4 .
- the resin sheet p2 is suspended between the insertion device 19 and the second split mold 22.
- direct vacuum forming is performed using the resin sheets p1 and p2 extruded from the T-die 18 as they are, so the resin sheets p1 and p2 may be cooled to room temperature and solidified before forming. Also, the solidified resin sheets p1 and p2 are not heated before molding.
- the resin sheet p1 and the protruding portion (for example, the pinch-off portion) of the first split mold 21 are brought into close contact in advance, and the resin sheet p1 is formed. and the first split mold 21 to form a closed space.
- an outer frame (not shown) separate from the first and second split molds 21 and 22 may be used.
- Each outer frame is arranged on the peripheral surface portions of the first and second split molds 21 and 22 .
- Each outer frame is movable in the opening/closing direction of the first and second split molds 21 and 22, and is formed with vacuum suction holes.
- the outer frame of the first split mold 21 is brought into close contact with the resin sheet p1 by suction, and a sealed space is formed between the first split mold 21, the resin sheet p1, and the outer frame.
- the resin sheet shaping step the air in the closed space is vacuum-sucked through the vacuum suction holes hl of the first and second split molds 21, 22, and the resin sheets p1, p2 are formed into the first and second molds. It is shaped into two split molds 21 and 22 .
- the resin sheet p1 is formed into a shape along the contour of the inner surface 21b of the cavity.
- the resin sheet p2 is formed into a shape along the inner surface 22b of the cavity.
- the timing of shaping the resin sheets p1 and p2 may be shifted.
- the resin sheet p2 may be shaped after the core material welding process, or the resin sheet p2 may be shaped in the mold clamping process. good.
- the first outer portion 21a2 is not formed with a vacuum suction hole hl. Therefore, even if it is performed in the resin sheet shaping step, adhesion between the skin material 4 and the resin sheet p1 is suppressed. Therefore, when the inner burr portion 5bc1 is removed from the molded body main body 5a, it is possible to reuse the resin forming the inner burr portion 5bc1.
- the core material 3 is welded to the resin sheet p1.
- the inserting device 19 mounts the skin material 4 on the first split mold 21 , so the core material 3 remains in the inserting device 19 .
- the core material 3 can be welded to the resin sheet p1.
- the insertion device 19 is moved to a position outside the movement trajectories of the first and second split molds 21 and 22.
- the timing of placing the core material 3 between the resin sheets p1 and p2 is not limited, and it may be placed between the resin sheets p1 and p2 in the hanging process or the shaping process. Also, the core material 3 may be welded to the resin sheet p2 first.
- the engaging step is a step of shaping the outer burr portion 5bc2 of the molded body 5 to the movable portion 23 and engaging the outer burr portion 5bc2 with the movable portion 23 (burr forming step). That is, in the engaging step, as shown in FIG. 13, the outer burr portion 5bc2 is sucked to the engaging portion 23d via the suction portion 23c, so that the resin sheet p1 of the outer burr portion 5bc2 is pulled along the engaging portion 23d. Shape it like this.
- the resins (resin sheets p1, p2) forming the outer flash portion 5bc2 are welded together with the first and second split molds 21, 22 closed (see FIG. 13).
- the engagement step burr portion shaping step
- portions of the resin sheets p1 and p2 that are not welded are likely to separate, and as a result, the outer flash portion 5bc2 becomes hollow.
- the outer burr portion 5bc2 (resin sheet p1) is clearly formed with irregularities along the engaging portion 23d, and the engaging portion 23d is formed on the outer side. It becomes easy to get caught on the burr portion 5bc2 (resin sheet p1).
- the movable portion 23 can effectively tear off the outer burr portion 5bc2 from the inner burr portion 5bc1.
- the resin sheets p1 and p2 forming the outer burr portion 5bc2 are welded to each other. This increases the rigidity of the outer burr portion 5bc2, and as a result, the force of the engaging portion 23d pulling the outer burr portion 5bc2 is easily transmitted to the outer burr portion 5bc2, and the outer burr portion 5bc2 is easily torn from the inner burr portion 5bc1. Become.
- the molded body 5a is housed in the first and second split molds 21 and 22, and the large flash portion 5b is cut into the first split mold 21. It is engaged with an engaging portion 23 d provided on the movable portion 23 .
- FIG. 10A when the upper side of the movable portion 23 is tilted away from the main body portion 22a1, the molded article 5 is torn from the upper side along the left line 5cl and the right line 5cr of the cutting line 5c. start to disconnect.
- FIG. 10B when the movable part 23 is moved so that the lower side of the movable part 23 is separated from the first split mold 21, the tear of the molded body 5 progresses downward, The cutting process is completed (see Figure 15).
- the first and second split molds 21 and 22 are opened with a clamping device (not shown) clamping the burrs such as the upper burr 5bu. .
- the compact 5 is transported to a desired place for carrying out the next process by a clamping device. As shown in FIG. 16, the compact 5 is cut along the left line 5cl and the right line 5cr of the cutting line 5c.
- the molded body 5 is not cut along the upper line 5cu and the lower line 5cb of the cutting line 5c.
- the molded product main body 5a tends to swing against the large burr portion 5b, making it difficult to handle.
- the molded body 5 is cut only along the left line 5cl and the right line 5cr, so that the molded body 5 can be easily handled.
- Second Cutting Step the molded body 5 is cut along the upper line 5cu and the lower line 5cb to separate the molded body 5 into the molded body body 5a and the large burr portion 5b.
- a cutting device capable of recognizing the positions of the upper line 5cu and the lower line 5cb and automatically cutting the cutting lines can be used.
- the resin panel 1 is obtained by removing the small burr portion 5e and the inner burr portion 5bc1. This step can be performed by an operator.
- the outer burr portion 5bc2 is moved to the engagement portion 23d of the movable portion 23 via the suction portion 23c. aspirate to.
- the outer burr portion 5bc2 is formed on the movable portion 23, and the outer burr portion 5bc2 engages with the movable portion 23 more reliably. Therefore, when the movable portion 23 is moved relative to the first and second split molds 21 and 22, the outer burr portion 5bc2 is prevented from sliding on the movable portion 23, and the outer burr portion 5bc2 is prevented from sliding. It moves so as to follow the movable portion 23, and as a result, the outer burr portion 5bc2 is more reliably cut off from the compact main body 5a.
- the first and second split molds 21 and 22 have a double pinch-off structure. That is, each of the first and second split molds 21 and 22 has inner pinch-off portions 21d1 and 22d1 connected to the cavity portion cvt, and positions further away from the inner pinch-off portions 21d1 and 22d1 than the cavity portion cvt. and outer pinch-off portions 21d2 and 22d2 provided in the .
- the inner pinch-off portions 21d1 and 22d1 are required to have a shape corresponding to the shape of the compact main body 5a.
- the outer pinch-off portions 21d2 and 22d2 are arranged at positions separating the inner burr portion 5bc1 and the outer burr portion 5bc2.
- Both the inner burr portion 5bc1 and the outer burr portion 5bc2 are to be cut off, and are unnecessary portions on the product. That is, the outer pinch-off portions 21d2 and 22d2 are portions that are not connected to the cavity portion cvt and separate the inner burr portion 5bc1 and the outer burr portion 5bc2 that are unnecessary on the product. , 22d2 are restrained from having a shape that matches the shape of the compact main body 5a like the inner pinch-off portions 21d1 and 22d1. Therefore, in the embodiment, the shape of the outer pinch-off portions 21d2 and 22d2 can be easily set to a shape that takes into consideration the connection with the movable portion 23. FIG. In other words, it is possible to prevent the cutting line of the burr from being distorted and to prevent the burr from being difficult to cut.
- the top surfaces of the inner pinch-off portions 21d1 and 22d1 are flat, but the present invention is not limited to this.
- the inner pinch-off portions 21d1 and 22d1 may extend so that the surfaces of the top portions form an uneven (wavy) shape.
- a resin panel having a shape different from that of the resin panel described in the embodiment will be described as an example. That is, the resin panel may have, for example, a hinge portion formed by crushing a resin sheet with a mold between two bases 3a and 3b covered with a resin sheet. .
- the hinge portion is a thin portion configured by crushing the resin sheets p1 and p2 by the pinch-off portions 21dd and 22dd (see FIG. 19) of the first and second split molds 21 and 22.
- the made panel can be folded via this hinge portion.
- the hinge portion is formed so as to lean toward one side in the thickness direction of the resin panel.
- the parting line of the substrates 3a and 3b is the center of the thickness direction of the resin panel, while the parting line of the hinge portion is the hinge portion itself. It leans to one side in the thickness direction of the panel.
- the parting line of the resin panel has a structure in which the portions connecting the bases 3a and 3b and the hinge portion are complicated.
- the pinch-off portions 21d and 22d of the first and second split molds 21 and 22 have an intricate configuration. Specifically, as shown in FIG. 19, in the cross section of the first and second split molds 21 and 22 at the position of the hinge portion, the inner pinch-off portion 22d1 has a convex portion, and the inner pinch-off portion 22d1 has a convex portion. The pinch-off portion 21d1 has a concave portion.
- This embodiment is suitable for a resin panel having such a hinge portion. If a resin panel having a hinge portion as described above is manufactured using a mold that does not have the outer pinch-off portions 21d2 and 22d2 like a conventional mold, the cutting line of the burr portion at the hinge portion becomes distorted. Mold design becomes complicated. In contrast, in the embodiment, the shape of the outer pinch-off portions 21d2, 22d2 can be determined without being restricted by the shapes of the inner pinch-off portions 21d1, 22d1. Therefore, in the embodiment, it is possible to prevent the cutting line of the burr from being distorted, and to prevent the burr from being difficult to cut. In addition, since the configuration of the first and second split molds 21 and 22 can be avoided from becoming a complicated configuration, it is easy to design the mold.
- the movable part cuts the part corresponding to the connecting part between the molded body main body 5a and the inner burr part 5bc1 in the embodiment.
- the resin sheet peels off or cracks starting from the relevant part when the molded body is removed from the mold, and the molded body becomes a defective product. It may become Since the embodiment is configured to cut the connecting portion between the inner burr portion 5bc1 and the outer burr portion 5bc2, even if the outer burr portion 5bc2 cannot be completely cut off from the inner burr portion 5bc1, peeling and tearing will occur.
- the portion is the unnecessary inner burr portion 5bc1.
- the embodiment it is possible to prevent the molded body from becoming a defective product, and to improve the yield. Further, as described above, since the embodiment employs the double pinch-off structure, the burr portion itself is less likely to be cut, and the effect of improving the yield is further enhanced.
- the movable part also cuts the skin material.
- the skin material may not be cut.
- the skin material may be peeled from the skin material that could not be cut, and the molded body may become defective.
- the movable part 23 since the ends of the skin material 4 are located inside the outer pinch-off portions 21d2 and 22d2, the movable part 23 does not cut the skin material 4 itself. Therefore, according to the embodiment, it is possible to prevent the molded body 5a from becoming a defective product, and to improve the yield.
- the part where the turnover occurs is the unnecessary inner burr portion 5bc1. That is, since the embodiment employs a double pinch-off structure, even if the skin material 4 extends to the outer burr portion 5bc2, the molded body body is prevented from becoming a defective product. It is possible to improve the yield.
- the first split mold 21 and the movable part 23 are connected via a drive mechanism 24 .
- the stroke of the drive mechanism 24 is large, or depending on the structure of the first split mold 21 and the movable part 23, the movable part 23 falls off from the first split mold 21 and the movable part 23 returns to the initial position. It may become difficult.
- the stroke of the drive mechanism 24 is large, the movable part 23 stops contacting the first split mold 21 and the movable part 23 falls off from the first split mold 21 .
- the movable part 23 since the movable part 23 is connected to the first split mold 21 via the drive mechanism 24, the movable part 23 does not drop to the floor.
- the movable part 23 interferes with the side surface of the first split mold 21 and returns the movable part 23 to its initial position. may become impossible. In such a case, for example, the operator needs to move the movable part 23 to the initial position each time the operator falls off.
- the first split mold 21 has a support portion 21f, and the movable portion 23 has a supported portion 23f.
- illustration of the drive mechanism 24 is omitted.
- the support portion 21f is configured to prevent the movable portion 23 from falling off from the first split mold 21, and the support portion 21f protrudes from the first split mold 21 toward the movable portion 23.
- the support portion 21 f is connected to the lateral side surface of the first split mold 21 .
- the support portion 21f is connected to the first outer portion 21a2.
- the support portion 21f is more movable than the end surface portion 21a3 of the first split mold 21. It is provided so as to protrude toward the portion 23 side. In other words, when viewed in the direction of arrow Ar in FIG.
- the support portion 21f is provided so as to protrude toward the movable portion 23 from the outermost pinch-off portion (outer pinch-off portion 21d2) in the width direction.
- the support portion 21 f is arranged on the back side of the front portion of the first split mold 21 in the thickness direction Dr of the first split mold 21 .
- the front portion of the first split mold 21 is, for example, a portion where the inner pinch-off portion 21d1, the outer pinch-off portion 21d2, the inner surface 21b, and the like are formed.
- the supported portion 23f is configured to be supported by the supporting portion 21f.
- the supported portion 23f is a concave portion into which the support portion 21f is inserted. As shown in FIG. 20C, since the supporting portion 21f is inserted into the supported portion 23f, the supported portion 23f is supported on the upper surface of the supporting portion 21f while the movable portion 23 is being driven. Thereby, it is possible to prevent the movable part 23 from falling off from the first split mold 21 .
- the movable portion 23 moves so as to swing, so the size of the supported portion 23f is larger than the size of the supporting portion 21f.
- the movable portion 23 swings, interference between the supporting portion 21f and the supported portion 23f can be avoided, and the movable portion 23 can operate smoothly.
- This modified example 2 can also be applied to the form of modified example 1.
- (Third viewpoint) 1 About the resin panel 1
- the configuration of the resin panel 1 (an example of the “structure”) according to the embodiment of the third viewpoint is the same as the resin panel 1 according to the embodiments of the first and second viewpoints (the first and "1 Resin Panel 1" of the second aspect), so the description is omitted.
- the molding machine 10 includes a pair of sheet forming devices 14, molds (first and second split molds 21 and 22), outer frames 31 and 32, and a movable portion 23. and 25A to 25C, the molding machine 10 has a drive mechanism (not shown) that separates the movable part 23 from the first split mold 21 (not shown).
- drive mechanism 24 is also provided.
- this driving device is capable of moving the upper portion of the movable portion 23 and then moving the lower portion of the movable portion 23, so that the burr portion (one part of the resin sheet) can be smoothly moved. part) can be torn.
- first and second split molds 21, 22 2-1-2 Molds (first and second split molds 21, 22) and outer frames 31, 32
- the resin sheets p1 and p2 are guided between the first and second split molds 21 and 22.
- the first and second split molds 21 and 22 can be split at the parting surfaces that come into contact when the molds are closed. ) is formed. That is, in the molding process, the molded body 5 is formed using a pair of splittable first and second split molds 21 and 22 .
- a skin escape space sp (see FIGS. 33 and 34) is formed between the first and second split molds 21 and 22 .
- the edge of the skin material 4 is disposed in the skin escape space sp during molding.
- the first split mold 21 includes a main body portion 21a1, a pair of first outer side portions 21a2, and an end face portion 21a3 (see FIG. 34).
- a cavity portion cvt is formed in the body portion 21a1.
- the cavity part cvt is a closed space formed between the first split mold 21 and the second split mold 22. is the space in which is molded.
- the first outer portion 21a2 is connected to the widthwise end portions (left and right end portions) of the main body portion 21a1.
- the width direction is a direction perpendicular to the opening/closing direction of the first and second split molds 21 and 22 and perpendicular to the vertical direction.
- a surface against which the movable portion 23 abuts is formed on the end surface portion 21a3.
- the end surface portion 21a3 is formed on the side surface of the first outer portion 21a2.
- the first split mold 21 is provided with a large number of vacuum suction holes hl (see FIG. 29), and vacuum suction is performed on the resin sheet p1 to shape it into a shape along the inner surface 21b of the first split mold 21. It is possible to In addition, as shown in FIG. 24, the inner surface 21b faces the cavity portion cvt.
- the first split mold 21 has a pinch-off portion 21d, and the pinch-off portion 21d is provided so as to surround the cavity portion cvt.
- the pinch-off portion 21d is a protrusion formed so as to protrude from the first split mold 21 side toward the second split mold 22 side.
- the pinch-off portion 21d has an inner pinch-off portion 21d1 and an outer pinch-off portion 21d2.
- the inner pinch-off portion 21d1 and the outer pinch-off portion 21d2 are formed in the first outer portion 21a2.
- the inner pinch-off portion 21d1 is provided so as to face the cavity portion cvt.
- the inner pinch-off portion 21 d 1 is formed in a shape corresponding to the shape of the resin panel 1 .
- the inner pinch-off portion 21d1 has a flat top surface. Further, in the embodiment, the inner pinch-off portion 21d1 extends in a bent straight line.
- the outer pinch-off portion 21d2 is provided at a position further away from the cavity portion cvt than the inner pinch-off portion 21d1.
- the outer pinch-off portion 21 d 2 is formed in a shape that matches the shape of the movable portion 23 .
- the outer pinch-off portion 21d2 is an engaging portion 23d closest to the first split mold 21 (hereinafter referred to as the closest engaging portion 23d (see FIGS. 24 to 25C) of the later-described movable portion 23). (referred to as an engaging portion 23d).
- the outer pinch-off portion 21d2 is formed along the nearest engaging portion 23d when the first split mold 21 and the movable portion 23 are viewed from above. As a result, it is possible to prevent the cutting line of the burr from being distorted and to prevent the burr from being difficult to cut.
- the first split mold 21 has a pair of suction parts 21A.
- 21 A of suction parts are each provided in the upper part and lower part of the 1st split mold 21.
- the upper and lower suction portions 21A are connected to the upper and lower ends of the body portion 21a1, respectively.
- the suction part 21A is formed to protrude from the first split mold 21 side toward the second split mold 22 side. As a result, when the first split mold 21 moves forward, the suction portion 21A comes into contact with the resin sheet p1 before the pinch-off portion 21d.
- a suction hole 21B is formed in the front end surface of the suction portion 21A, and the suction portion 21A can suck the resin sheet p1 by sucking air from the suction hole 21B.
- an inclined surface 21C is formed in the suction portion 21A, and when the resin sheet p1 is shaped into the first split mold 21, the resin sheet p1 is inclined toward the first split mold 21. As shown in FIG. It is easy to follow the surface of
- the first split mold 21 has a male projection 21e as shown in FIG.
- the male projection 21e is provided at a position facing a female projection 19c of the insertion device 19, which will be described later.
- the male projection 21 e can slide relative to the first split mold 21 and be accommodated in a hole (not shown) in the first split mold 21 .
- the second split mold 22 includes a body portion 22a1, a pair of second outer portions 22a2, a pair of facing portions 22a3, and four chamfered portions 22a4.
- a cavity portion cvt is formed in the body portion 22a1.
- the second outer portion 22a2 is connected to the widthwise end portions (left and right end portions) of the main body portion 22a1.
- each facing portion 22a3 is connected to an end portion in the width direction of each second outer portion 22a2.
- the facing portion 22 a 3 is arranged to face the engaging portion 23 d of the movable portion 23 .
- Each opposing portion 22a3 is formed of a flat surface and is connected to the upper and lower chamfered portions 22a4 and one of the left and right chamfered portions 22a4.
- the chamfered portion 22 a 4 is formed on the peripheral portion of the second split mold 22 .
- the second split mold 22 has a rectangular shape in plan view, so the chamfered portions 22a4 are provided on the four sides of the second split mold 22 corresponding to this.
- Each chamfered portion 22a4 has a front end portion 22af and a rear end portion 22a.
- the front end portion 22af is the portion of the chamfered portion 22a4 closest to the first split mold 21 in the opening and closing direction of the mold.
- the rear end portion 22ab is the portion of the chamfered portion 22a4 that is farthest from the first split mold 21 in the opening and closing direction of the mold.
- the left and right chamfered portions 22a4 are provided between the outer frame 32 and pinch-off portions (outer pinch-off portions 22d2). When the left and right chamfered portions 22a4 are viewed while the resin sheet p2 is suspended, the left and right chamfered portions 22a4 are separated from the suspended resin sheet p2 in the direction from the outer pinch-off portions 22d2 toward the outer frame 32. It is designed to spread out.
- the chamfered portion 22a4 is composed of a tapered surface (inclined surface). Specifically, the tapered surface (inclined surface) of the chamfered portion 22a4 is formed from the front end portion 22af to the rear end portion 22ab. A suction hole for sucking the resin sheet p2 is not formed in the chamfered portion 22a4.
- the inclination angle ⁇ of the tapered surface of the chamfered portion 22a4 is preferably greater than 0 degrees and equal to or less than 60 degrees.
- the tilt angles ⁇ (degrees) are 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, and 60, for example.
- the tilt angle ⁇ can also be defined within a range between any two of the numerical values exemplified here (for example, 5 degrees or more and 60 degrees or less).
- the width w1 of the chamfered portion 22a4 in the mold opening/closing direction is preferably 10 mm or more and 63 mm or less.
- the width w1 (mm) is 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 63. can also be defined within the range of
- the width w2 in the direction from the pinch-off portion 22d of the chamfered portion 22a4 toward the outer frames 31 and 32 is preferably 5.7 mm or more and 70 mm or less. More preferably, the width w2 is 12 mm or more and 40 mm or less. Specifically, for example, the width w2 (mm) is 5.7,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38 , 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70 and within a range between any two of the numerical values exemplified herein. can also be defined.
- the second split mold 22 has a total of four chamfered portions 22a4 (upper and lower chamfered portions 22a4 and left and right chamfered portions 22a4).
- the configurations (inclination angle ⁇ , width w1, width w2) of these chamfered portions 22a4 may be the same or different as long as they satisfy the numerical values or numerical ranges described above.
- the upper and lower chamfered portions 22a4 have the same configuration
- the left and right chamfered portions 22a4 have the same configuration
- the upper and lower chamfered portions 22a4 and the left and right chamfered portions 22a4 may have different configurations.
- a large number of vacuum suction holes hl are provided in the second split mold 22, and the resin sheet p2 is vacuum-sucked and formed into a shape along the inner surface 22b of the second split mold 22. It is possible to In addition, the inner surface 22b faces the cavity portion cvt.
- the second split mold 22 has a pinch-off portion 22d, and the pinch-off portion 22d is provided so as to surround the cavity portion cvt.
- the pinch-off portion 22d is a protrusion formed so as to protrude from the second split mold 22 side toward the first split mold 21 side.
- the pinch-off portion 22d has an inner pinch-off portion 22d1 and an outer pinch-off portion 22d2.
- the inner pinch-off portion 22d1 and the outer pinch-off portion 22d2 are formed in the second outer portion 22a2.
- the inner pinch-off portion 22d1 and the outer pinch-off portion 22d2 have the same configuration as the inner pinch-off portion 21d1 and the outer pinch-off portion 21d2.
- the inner pinch-off portion 22d1 is provided so as to face the cavity portion cvt.
- the inner pinch-off portion 22d1 is formed in a shape corresponding to the shape of the resin panel 1. As shown in FIG. Specifically, the inner pinch-off portion 22d1 has a flat top surface. In addition, the inner pinch-off portion 22d1 extends in a bent straight line.
- the outer pinch-off portion 22d2 is provided at a position farther from the cavity portion cvt than the inner pinch-off portion 22d1.
- the outer pinch-off portion 22d2 is formed in a shape that matches the shape of the movable portion 23, similarly to the outer pinch-off portion 21d2.
- the outer frames 31 and 32 are arranged around the second split mold 22 .
- the outer frame 31 is attached to the upper and lower portions of the second split mold 22, respectively, and the outer frame 32 is attached to the left and right side portions of the second split mold 22, respectively.
- the outer frames 31 and 32 are configured to be movable parallel to the opening/closing direction of the mold. In other words, the outer frames 31 and 32 are configured to move forward and backward in the opening and closing direction of the mold.
- Suction holes 31a and 32a are formed in the front end surfaces of the outer frames 31 and 32, respectively, and the outer frames 31 and 32 can suck the resin sheet p2 by sucking air from the suction holes 31a and 32a. ing.
- the outer frames 31, 32 move forward when the resin sheet p2 is sucked, but after that, in the embodiment, the outer frames 31, 32 move backward. By retreating, the resin sheet p2 is appropriately shaped into the second split mold 22, and when the first and second split molds 21 and 22 are closed, the outer frames 31 and 32 are separated into the first split molds. Interference with the mold 21 and the movable part 23 is avoided.
- a retreat distance w3 of the outer frames 31 and 32 is 30 mm or more and 80 mm or less.
- the retreat distance w3 (mm) of the outer frames 31, 32 is, for example, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80. It can also be defined within a range between any two.
- the distance t1 between the front end surface of the outer frame 32 and the front end surface of the suction portion 23g is , 5 mm or more.
- the distance t1 (mm) is, for example, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, and ranges between any two of the numerical values exemplified here. It can also be defined within The same applies to the outer frame 31 and the suction portion 21A. That is, the distance between the front end face of the outer frame 31 and the front end face of the suction portion 21A can be defined similarly to the distance t1 described above.
- the skin material relief space sp according to the embodiment of the third aspect shown in FIGS. 33 and 34 is the same as the skin material relief space sp described in the embodiments of the first and second aspects (" ⁇ skin material escape space sp>), so the description is omitted.
- the movable part 23 has a function of engaging with the burr and cutting the burr.
- the movable part 23 is provided so as to be relatively movable with respect to the first split mold 21, as shown in FIGS. 25A to 25C.
- the movable portion 23 is attached to the side of the first outer portion 21a2 of the first split mold 21, as shown in FIG. 25B.
- the movable portion 23 includes a facing surface portion 23a, an abutment surface portion 23b, a suction portion 23c, an engaging portion 23d, a seal member 23e, and a suction portion 23g.
- the facing surface portion 23 a is provided so as to face the facing portion 22 a 3 of the second split mold 22 .
- a plurality of engaging portions 23d are formed on the facing surface portion 23a.
- the abutment surface portion 23b is formed so as to abut against the end surface portion 21a3 of the first split mold 21.
- the abutment surface portion 23b is formed along the end surface portion 21a3. Therefore, when air is vacuum-sucked through the vacuum suction hole hl in a state in which the abutment surface portion 23b abuts against the end surface portion 21a3, the air flows from between the abutment surface portion 23b and the end surface portion 21a3. It is possible to suppress the flow into the part to be shaped.
- the seal member 23e is attached to the abutment surface portion 23b. Specifically, a groove is formed in the abutment surface portion 23b, and the seal member 23e is attached in the groove.
- the portion where the resin is shaped is, for example, the inside of the cavity portion cvt, the gap between the burr portion and the surface of the engaging portion 23d, and the like.
- the suction portion 23c is a hole formed in the facing surface portion 23a, and is open to the area where the engagement portion 23d is formed.
- the burr portion (the outer burr portion 5bc2) is shaped into the engaging portion 23d by air being vacuum-sucked through the suction portion 23c.
- the burr portion (outer burr portion 5bc2) is more reliably caught on the movable portion 23, and the burr portion is prevented from slipping on the movable portion 23 when the movable portion 23 is driven.
- the burr portion when the movable portion 23 is driven, the burr portion appropriately follows the movable portion 23, and the burr portion can be cut more reliably.
- the engaging portion 23d has a function of engaging with the burr portion.
- the engaging portion 23 d is a protrusion formed to protrude toward the second split mold 22 . Since a plurality of engaging portions 23d are formed on the opposing surface portion 23a, the areas where the engaging portions 23d are formed are uneven. In the embodiment, it is assumed that the suction portion 23c is opened in the area between the two adjacent engaging portions 23d of the facing surface portion 23a, but the present invention is not limited to this. The suction portion 23c may open on the surface of the engaging portion 23d.
- the suction part 23g is provided on the end side of the movable part 23 in the movable direction (the direction in which the movable part 23 moves from the state shown in FIG. 25A to the state shown in FIG. 25C).
- the suction portion 23g is formed to protrude from the movable portion 23 side toward the outer frame 32 side.
- the front end face of the suction portion 23g contacts the resin sheet p1 before the engaging portion 23d.
- the position of the front end surface of the suction portion 23g matches the position of the front end surface of the suction portion 21A of the first split mold 21. As shown in FIG.
- a suction hole 23g1 is formed in the front end surface of the suction portion 23g, and the suction portion 23g can suck the resin sheet p1 by sucking air from the suction hole 23g1.
- an inclined surface 23g2 is formed on the suction portion 23g so that the resin sheet p1 can easily follow the surface of the movable portion 23 when the resin sheet p1 is shaped into the movable portion 23. It's becoming The inclined surface 23g2 is connected to the facing surface portion 23a.
- the projection amount t2 of the suction portion 23g (the distance between the position of the front end surface of the suction portion 23g and the position of the opposing surface portion 23a in the opening and closing direction of the mold) is 15 mm or more.
- the protrusion amount t2 (mm) is, for example, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, where It can also be defined in a range between any two of the numerical values given.
- the method of manufacturing the resin panel 1 of the present embodiment includes a skin material mounting process, a hanging process, an adsorption process, a shaping process, a core material welding process, and a molding process. , a first cutting step, a compact removing step, a second cutting step, and a post-step.
- the outer frame 32 advances and contacts the resin sheet p2. Then, the resin sheet p2 is attracted to the front end face of the outer frame 32 by the suction action of the suction holes 32a of the outer frame 32. As shown in FIG. As shown in FIG. 27, the outer frame 31 also moves forward. The resin sheet p ⁇ b>2 is attracted to the front end surface of the outer frame 31 by the suction action of the suction holes 31 a of the outer frame 31 . Thereby, as shown in FIG. 29, a closed space SD1 is formed between the resin sheet p2, the second split mold 22, and the outer frames 31 and 32. As shown in FIG.
- the resin sheet p2 is formed into a shape along the surface of the second split mold 22.
- the second split mold 22 has the chamfered portion 22a4
- the resin sheet p1 is smoothly arranged along the chamfered portion 22a4. . This can prevent the resin sheet p1 from being peeled off from the second split mold 22 and the outer frames 31, 32, thereby avoiding the occurrence of molding defects.
- the resin sheet The p1 extends so as to bend at a right angle starting from the corner.
- the resin sheet p1 cannot well follow the retreating movement of the outer frames 31 and 32, and the corners and their peripheral portions may be damaged by the outer frames 31 and 32 or the second division.
- the metal mold 22 is separated (peeled off).
- the resin sheet p1 is forcibly stretched at the corners described above, and the resin sheet p1 cannot well follow the retreating movement of the outer frames 31 and 32. It means that it will come off from the two-part mold 22 . In such a case, the resin sheet p1 is not properly formed under reduced pressure, leading to leakage in the closed space SD1.
- the second split mold 22 since the second split mold 22 has the chamfered portion 22a4, when the outer frames 31 and 32 retreat and the resin sheet p1 moves together with the outer frames 31 and 32, the resin sheet p1 follows along the chamfered portion 22a4, and separation from the second split mold 22 is avoided.
- a method of slowing the retreat speed of the outer frames 31 and 32 to improve the followability of the resin sheet p1 is also conceivable.
- restrictions are imposed on the manufacturing conditions of the process.
- it is not necessary to slow down the retraction speed of the outer frames 31 and 32, thereby avoiding an increase in the molding time of the molded body 5 and restricting the manufacturing conditions. can be avoided.
- timing to start vacuum suction and the timing to start retreating the outer frames 31 and 32 may be the same or different.
- the timing of shaping the resin sheets p1 and p2 may be shifted.
- the resin sheet p2 may be shaped after the core material welding process, or the resin sheet p2 may be shaped in the mold clamping process.
- the timing of depressurizing the suction portion 23c may be after the molding process described later.
- the insertion device 19 attaches the skin material 4 to the first split mold 21. is left. By moving the insertion device 19 toward the resin sheet p1 in this state, the core material 3 can be welded to the resin sheet p1.
- this step is the same as “2-3-4 core material welding step" in the first and second aspects, so the description is omitted.
- the first and second split molds 21 and 22 are closed.
- the resin sheets p1 and p2 are crushed and welded at the portions corresponding to the pinch-off portions 21d and 22d, forming the compact 5 shown in FIG.
- at least a portion of the movable portion 23 (in the embodiment, the suction portion 23g) is arranged closer to the outer frame 32 than the position of the front end portion 22af of the chamfered portion 22a4 when the molding process is completed.
- the suction portion 21A is arranged closer to the outer frame 31 than the position of the front end portion 22af of the chamfered portion 22a4. Since the outer frames 31 and 32 are appropriately retracted in the shaping process, contact between members is avoided.
- the chamfered portion 22a4 is not limited to a tapered surface. Any shape may be used as long as the distance between the chamfered portion 22a4 and the resin sheet P2 is widened in the direction from the outer pinch-off portion 22d2 toward the outer frame 32 .
- the chamfered portion 22a4 may be composed of a plurality of tapered surfaces (a plurality of inclined surfaces) having different inclinations.
- the tapered surface of the chamfered portion 22a4 is formed in a flat shape, but it may be formed in a curved surface shape, or a flat portion and a curved portion may be combined.
- the chamfered portion 22a4 may have one or more stepped portions (formed in a stepped shape). part).
- the second split mold 22 has been described as having four chamfered portions 22a4, but it is not limited to this.
- the second split mold 22 may include only the left and right chamfered portions 22a4 and may not include the upper and lower chamfered portions 22a4, or vice versa.
- the second split mold 22 may be configured to include only one of the four chamfered portions 22a4 of the upper, lower, left, and right sides.
- the molding machine 10 has been described as including the movable part 23, but it is not limited to this, and the movable part 23 may not be provided.
- a mode in which a pair of movable parts 23 are arranged on the left and right sides of the first split mold 21 has been described as an example, but it is not limited to this.
- a movable portion 23 may be arranged under the first split mold 21 .
- the movable part 23 may be arranged under the one split mold 21 .
- panel 101 includes resin panel body 102 and skin material 108 .
- the resin panel body 102 is formed by integrating a first main body portion 102a, a second main body portion 102b, and a hinge portion 105.
- FIG. 35A illustrates the surface side (front side) of the resin panel body 102, and the skin material 108 is attached so as to cover the entire surface of the resin panel body 102.
- FIG. The skin material 108 is attached across the hinge portion 105 to the first body portion 102a and the second body portion 102b. The back surface of the resin panel body 102 is exposed.
- the panel 101 is a substantially rectangular flat panel having a total length L0 and a width W0 .
- the total lengths of the first body portion 102a, the second body portion 102b, and the hinge portion 105 are the same, and all of them have the same total length L0 as the panel 101.
- the first body portion 102a has a width Wa
- the second body portion 102b has a width Wb ( Wb ⁇ Wa).
- Wb width of the hinge portion 105 (W h in FIG. 38)
- W 0 W a +W b +W h .
- hinge portion 105 extends between first body portion 102a and second body portion 102b.
- the hinge portion 105 has three hinge pieces 105h and two slits 105s.
- the length Lh of each hinge piece 105h is very small with respect to the total length L0 of the hinge portion 105.
- the three hinge pieces 105h rotatably connect the first body portion 102a and the second body portion 102b.
- the slit 105s is provided next to the hinge piece 105h to separate the first body portion 102a and the second body portion 102b.
- FIG. 37 is an enlarged view of portions B1-B3 of FIG. 36A.
- the hinge piece 105h has one middle hinge piece 105h1 and two end hinge pieces 105h2. Two end hinge pieces 105 h 2 are provided at both ends of the hinge portion 105 .
- the intermediate hinge piece 105h1 is provided inside the both ends of the hinge portion 105 .
- the intermediate hinge piece 105h1 is provided exactly at the center position of the hinge portion 105 (that is, the position of L 0 /2 from the end of the hinge portion 105).
- FIG. 38 shows a cross section along line CC in FIG.
- the resin panel body 102 has a front wall 103 and a back wall 104 .
- the front wall 103 and the rear wall 104 face each other with a gap therebetween.
- a hollow portion 107 is provided between the front wall 103 and the back wall 104 .
- the peripheries of the front wall 103 and the rear wall 104 are connected by a peripheral wall (not shown).
- the surface of the front wall 103 is flat.
- the hinge portion 105 is formed by recessing the back wall 104 toward the front wall 103 .
- the rear wall 104 is provided with an inclined portion 104a adjacent to the hinge portion 105, and the interval between the front wall 103 and the rear wall 104 is narrowed toward the hinge portion 105 at the inclined portion 104a.
- the hinge portion 105 has a width Wh .
- the slit 105s may be a cut formed by a single line, or may be a cutout formed by cutting out the hinge portion 105 .
- the width (thickness) of the slit 105s is also referred to as the slit width WS , but the slit width WS is substantially zero when the slit 105s is a single-line incision.
- the width of the hinge piece 105h is the same as the width of the hinge portion 105, Wh. When the slit width WS is large, part of the skin material 108 is exposed from the slit 105s.
- a skin material 108 is provided on the front wall 103 side of the panel 101 .
- the skin material 108 is provided across the hinge portion 105 from the first body portion 102a to the second body portion 102b.
- the skin material 108 may be composed of an air permeable carpet-like member such as a non-woven fabric.
- the thickness of the front wall 103 and the back wall 104 in the first main body portion 102a and the second main body portion 102b is, for example, 0.5 to 2 mm, specifically, for example, 0.5, 1.0, 1 mm. .5, 2.0 mm, and may be in the range between any two of the values exemplified herein.
- hinge pieces 105h and slits 105s are alternately arranged along the direction in which hinge portion 105 extends.
- the two slits 105s have slit lengths L S1 and L S2 respectively.
- L S1 L S2 as an example.
- the three hinge pieces 105h have the same length Lh .
- L 0 3L h +L S1 +L S2 .
- L S1 +L S2 is also referred to as the total slit length L S .
- the thickness of the hinge piece 105h is, for example, 0.001 to 1.0 mm, specifically, for example, 0.001, 0.01, 0.1, 0.2, 0.3, 0.4, 0.0 .5, 0.6, 0.7, 0.8, 0.9, 1.0 mm, and may be in the range between any two of the values exemplified herein.
- the width W h of the hinge piece 105h (that is, the width W h of the hinge portion 105) is, for example, 1 to 8 mm. 0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0 mm. It may be in the range between any two.
- the thickness of the hinge portion 105 (that is, the thickness of the hinge piece 105h) means the thickness excluding the thickness of the skin material 108.
- values such as thickness and width of various members mean average values unless otherwise specified.
- the total length L 0 of the hinge portion 105 is the length of both ends of the hinge portion 105 .
- the total slit length L S is the total length of the slits 105s. The larger the ratio of these, L S /L 0 , the larger the ratio of the slits 105 s to the hinge portion 105 . (sum of L h ) is reduced.
- L S /L 0 may be, for example, 0.50 to 0.99, or may be, for example, 0.70 to 0.97.
- L S /L 0 is, for example, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.86, 0 .87, 0.88, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99 and may be in a range between any two of the numerical values exemplified here.
- the length Lh of each hinge piece 105h can be determined arbitrarily.
- the length Lh of the hinge piece 105h may be 10 mm, but is not limited to this, and may be, for example, 5 to 15 mm, or may be, for example, 2 to 100 mm.
- the length L h is, for example, , 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90, 100 mm, any of the numerical values exemplified here It may be within a range between two.
- the length Lh may be increased to some extent in order to secure a certain level of strength.
- the number of hinge pieces 105h provided in the hinge portion 105 is not limited to three, and may be two or four or more. Specifically, the number of hinge pieces 105h may be, for example, 5, 6, 7, 8, 9, or 10, and may be within a range between any two of the numerical values exemplified here.
- the plurality of hinge pieces 105h may all have a uniform length Lh , or may have different lengths. For example, when comparing the length L h1 of one intermediate hinge piece 105h1 and the length L h2 of one end hinge piece 105h2, L h1 ⁇ L h2 or L h1 >L h2 may be satisfied.
- the length Lh of each hinge piece 105h may differ from each other within the numerical range described above.
- the interval at which the hinge pieces 105h are provided is determined by the length of each slit 105s.
- the lengths of the plurality of slits 105s may be the same or may be different. If the slit 105s is shortened so that the hinge pieces 105h are brought closer together, the strength is increased. On the other hand, if the slit 105s is lengthened so that the hinge pieces 105h are spaced apart from each other, the bendability of the hinge portion 105 increases.
- Ease of bending is improved by providing the slit 105s. Since the ease of bending can be adjusted by the slit 105s, the hinge piece 105h does not have to be made too thin, and there is an advantage that it is easy to suppress biting and tearing of the hinge piece 105h. Further, in the embodiment, the skin material 108 is provided, so that the first main body part 102a and the second main body part 102b can be rotatably connected by both the hinge piece 105h and the skin material 108 . High strength can be obtained if the skin material 108 is constructed of a sufficiently thick material.
- the bendability of the hinge portion 105 can be controlled in various ways, and depending on the degree of bendability (flexibility) required, at least the number, length, width and depth or thickness of the slits 105s and the hinge pieces 105h can be adjusted. can be changed arbitrarily.
- FIG. 39 exemplifies the bending angle ⁇ of the hinge portion 105 .
- the bending angle ⁇ caused by the weight of the second body portion 102b may be, for example, 45° or more, 60° or more, 70° or more, or 85° or more.
- the bending angle ⁇ caused by the weight of the second body portion 102b is specifically, for example, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85° or 90°. , within a range between any two of the numerical values exemplified herein.
- the hinge portion 105 may be easily bent by the weight of the second body portion 102b, the configuration of the hinge portion 105 is not limited to this.
- the hinge portion 105 may not bend at all under the weight of the second body portion 102b (that is, ⁇ due to its own weight is substantially 0° in FIG. 39), or may bend only slightly (for example, 0° ⁇ 15°). or 0° ⁇ 30°, or 0° ⁇ 45°, etc.). Even in such a case, by providing the slit 105s, the hinge portion 105 may be easily bent when a force is applied to the second body portion 102b.
- the total length L0 of the panel 101 may be 500 to 1300 mm, for example.
- the total length L0 is, for example, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300 mm, and may be within a range between any two of the numerical values exemplified here.
- the panel 101 may be provided, for example, as a luggage board for automobiles, a deck board, a luggage compartment floor board, or the like.
- the relationship between the width W a of the first main body portion 102a and the width W b of the second main body portion 102b described in FIG. 35A and the like can be set arbitrarily.
- the width Wb of the second body portion 102b is large, the hinge portion 105 is likely to bend due to the weight of the second body portion 102b. Therefore, when W b ⁇ W a , the width ratio W b /W a may be, for example, 0.20 to 0.80, or may be, for example, 0.40 to 0.60.
- the width ratio W b /W a is 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, or 0.95, and may be in a range between any two of the numerical values recited herein .
- the method of this embodiment includes a preparation step, a slit cutting step, and an attaching step. Specifically, first, the resin panel body 102 before slit formation is prepared in a preparation step. Formation of the slit 105s and attachment of the skin material 108 are performed on the resin panel body 102 .
- the molding machine 10 includes a pair of sheet forming devices 14 and molds 121 and 131 .
- Each sheet forming device 14 comprises a hopper 12 , an extruder 13 , an accumulator 17 and a T-die 18 .
- the extruder 13 and the accumulator 17 are connected via a connecting pipe 15 .
- the accumulator 17 and the T-die 18 are connected through the connecting pipe 16 .
- the sheet forming apparatus 14 and the resin used according to the embodiment of the fourth aspect shown in FIG. 40 are the same as the sheet forming apparatus 14 and the resin used (first and second (see "2-1-1 Configuration of Sheet Forming Apparatus 14"), so the description is omitted.
- the resin sheets 123 and 133 are extruded between the molds 121 and 131 with the openable molds 121 and 131 opened.
- the molds 121, 131 have cavity surfaces 121a, 131a, and pinch-off portions 121b, 131b are provided to surround the cavity surfaces 121a, 131a.
- Vacuum suction holes (not shown) are provided in the cavity surfaces 121a and 131a, and the resin sheets 123 and 133 are vacuum-sucked through the vacuum suction holes to shape them into shapes along the cavity surfaces 121a and 131a. is possible.
- the thickness of the resin sheets 123, 133 is, for example, 0.5 to 2 mm, specifically, for example, 0.5, 1.0, 1.5, 2.0 mm. It may be in the range between any two.
- a mold 131 is provided with a ridge 135 that forms the hinge portion 105 .
- the ridge 135 is an elongated protrusion, and is preferably configured such that the longitudinal direction of the ridge 135 is not parallel to the direction of extrusion of the resin sheets 123, 133.
- , 133 are preferably arranged perpendicular to the direction of extrusion. In this case, changes in thickness of the resin sheets 123 and 133 along the longitudinal direction of the hinge portion 105 are suppressed.
- the resin panel body 102 is prepared before the formation of the slits 105s. More specifically, the preparation process of this embodiment includes an extrusion process, a shaping process, and a mold closing process.
- resin sheets 123 and 133 are extruded between dies 121 and 131 as shown in FIG.
- the resin sheet 133 is arranged between the resin sheet 123 and the mold 131 .
- the resin sheets 123, 133 are shaped along the cavity surfaces 121a, 131a of the molds 121, 131, respectively.
- This step can be performed by vacuum-sucking the resin sheets 123 and 133 with the molds 121 and 131 .
- the molds 121 and 131 are closed.
- the resin sheets 123 and 133 are welded together along the pinch-off portions 121b and 131b to form a shape along the inner surface of the cavity formed by the pair of molds 121 and 131.
- a resin panel body 102 is obtained.
- the resin sheets 123, 133 are compressed between the ridge 135 and the mold 121 to form the hinge portion 105 (see FIG. 41).
- a portion outside the pinch-off portions 121b and 131b becomes a burr.
- the molds 121 and 131 are opened, the panel 101 is taken out, and the burrs are removed to obtain the resin panel body 102 before the formation of the slits 105s.
- the hinge portion 105 of the resin panel body 102 is provided with slits 105s having a predetermined number and length.
- a specific means for forming the slit 105s is not limited, and for example, a press, an ultrasonic cutter, a knife, or the like may be used.
- the panel 101 is provided by attaching the skin material 108 to the resin panel body 102 with an adhesive. Since such post-pasting is performed, the material of the skin material 108 is not limited in the embodiment. Since the post-application does not require air permeability, there is an advantage that the usable upholstery material 108 can be used in a wide range of variations.
- the skin material 108 may not be a non-woven fabric, and may be a non-breathable skin material such as synthetic leather.
- the bendability of the hinge portion 105 can be improved by the novel approach of providing the slit 105s.
- the slit 105s and the hinge piece 105h as in the various variations disclosed in the embodiments, there is an advantage of being able to control the bendability of the hinge portion 105, ensure durability, and achieve both mass productivity. . That is, since the first main body portion 102a and the second main body portion 102b are connected by the hinge piece 105h, the first main body portion 102a and the second main body portion 102b need not be separated into separate parts.
- skin material 108 may be omitted from panel 101 .
- the structure of the resin panel body 102 is an example, and various structures can be applied to the first body portion 102a and the second body portion 102b.
- hollow portion 107 may be provided with a core made of foam.
- the foam as the core material secures a space between the front wall 103 and the back wall 104 in the hollow portion 107 and increases the strength and heat insulation of the panel 101 .
- an inserting step may be performed between the shaping step and the mold closing step. In the inserting step, the foam having thinned protrusions 135 is placed between the resin sheets 123 and 133, and the mold closing step is performed.
- first main body portion 102a and the second main body portion 102b may be constructed from a foamed resin plate that does not have the hollow portion 107 .
- reinforcing ribs may be provided at predetermined intervals at arbitrary positions in the width direction of the first main body portion 102a and the second main body portion 102b.
- a portion of the back wall 104 may be recessed toward the front wall 103 to provide a plurality of reinforcing ribs welded to the inner surface of the front wall 103, thereby improving the rigidity and strength of the resin panel body 102. good.
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Abstract
Description
特許文献1には、キャビティ部を取り囲むピンチオフ部を有する金型を用いた樹脂製パネルの成形方法が開示されている。特許文献1における成形方法では、例えば発泡体で構成されるコア材、コア材を被覆する樹脂シート、及び、例えば不織布で構成される表皮材がキャビティ部に配置され、これらがキャビティ部内において一体的に成形される。このように成形される成形体は、キャビティ部内に成形される成形体本体と、キャビティ部外に配置されるバリ部とを有する。
特許文献2には、金型と、金型の周囲に配置された外枠とを用いて樹脂製の構造体を製造する方法が開示されている。特許文献2の外枠は、金型から突き出るように前進し、垂下される樹脂シートに接触して、当該樹脂シートを吸着可能となっている。この外枠が樹脂シートを吸着した状態では、樹脂シートと金型の間の空間(キャビティ)が閉空間となる。このため、この空間を減圧することで、樹脂シートを金型に賦形することが可能となる。
特許文献3には、薄肉のヒンジ部を備える樹脂製のパネルが開示されている。
バリ部の構成(例えば、素材、形状及び表面積等)によっては、特許文献1の可動部がバリ部に係合しにくくなる場合がある。このような場合、可動部が駆動したときにバリ部が可動部とともに移動せず、バリ部が樹脂シートから切断されない可能性が高まる。
特許文献1では、金型の端にピンチオフ部が形成されており、また、可動部が初期位置に位置しているときにおいて可動部は、ピンチオフ部に突き当てられている。したがって、特許文献1において、バリ部の切断ラインは、ピンチオフ部に対応する位置となる。ここで、成形体の形状に応じてピンチオフ部の形状は、定められることになるが、可動部が、ピンチオフ部に突き当てられる部分に滑らかに繋がっていない場合には、切断ラインがいびつになり、バリ部が切断されにくくなる場合がある。
外枠は、適切に樹脂シートを金型に賦形させるために、前進位置からある程度後退させる必要がある。この外枠の後退量や金型の形状等によっては、樹脂シートが金型表面に追従し難くなり、樹脂シートが金型表面や外枠から剥がれてしまい、成形不良を引き起こす場合がある。
ヒンジ部が容易に曲がるように、ヒンジ部をより一層薄くする方法が考えられる。しかし薄いヒンジ部を安定して製造することは難しく、僅かな製造ばらつきにより食い切れ等の問題が生じうる。ヒンジ部の薄さを追求するアプローチには限界があった。
本発明によれば、構造体の製造方法であって、成形工程と、バリ部賦形工程と、切断工程とを備え、前記成形工程では、金型を用いて成形体を成形し、前記金型は、対をなす第1及び第2分割金型と、可動部とを有し、第1及び第2分割金型のそれぞれは、キャビティ部と、ピンチオフ部とを有し、前記可動部は、第1及び第2分割金型に対して相対移動可能に付設され、且つ、前記可動部は、吸引部と係合部とを有し、前記成形体は、成形体本体と、切断ラインと、バリ部とを有し、前記成形体本体は、前記成形工程において前記キャビティ部内で成形され、前記切断ラインは、前記成形工程において前記ピンチオフ部に押し潰され、前記バリ部は、前記切断ラインを介して前記成形体本体に連結され、且つ、前記可動部に設けられ、前記バリ部賦形工程では、前記吸引部を介して前記バリ部を前記係合部に吸引することで、前記バリ部を前記係合部に賦形させ、前記切断工程では、前記バリ部を前記係合部に賦形させた状態で前記可動部を第1及び第2分割金型に対して相対移動させることによって、前記切断ラインに沿うように前記バリ部を前記成形体本体から切断する、方法が提供される。
好ましくは、第1分割金型は、端面部を有し、前記可動部は、突き当て面部を有し、前記バリ部賦形工程では、前記突き当て面部が、前記端面部に突き当てられる、方法が提供される。
好ましくは、前記金型は、シール部材を更に有し、前記シール部材は、前記端面部又は前記突き当て面部に取り付けられている、方法が提供される。
好ましくは、第1分割金型は、第1外側部を有し、第1外側部には、第1分割金型の前記ピンチオフ部が形成され、且つ、第1外側部には、前記端面部が形成され、第2分割金型は、第2外側部を有し、第2外側部には、第2分割金型の前記ピンチオフ部が形成され、且つ、第2外側部は、第1及び第2分割金型の開閉方向において、第1外側部に対向するように配置されている、方法が提供される。
好ましくは、前記成形体は、樹脂シートと、表皮材と有し、前記表皮材は、前記樹脂シートの外側に配置されている、方法が提供される。
好ましくは、第1及び第2分割金型のそれぞれには、減圧吸引穴が形成され、前記減圧吸引穴は、前記キャビティ部に形成されており、且つ、前記減圧吸引穴は、前記樹脂シートを第1及び第2分割金型に賦形するように形成され、前記樹脂シートが第1及び第2分割金型に賦形された状態において、前記キャビティ部に配置された前記表皮材は、第1分割金型に沿うように設けられ、前記減圧吸引穴は、第1分割金型の第1外側部には形成されていない、方法が提供される。
好ましくは、第1外側部と第2外側部との間には、表皮材逃し空間が形成されており、前記成形工程において、前記表皮材逃し空間には、前記表皮材の端部が配置されている、方法が提供される。
本発明によれば、構造体の製造方法であって、成形工程と、係合工程と、切断工程とを備え、前記成形工程では、金型を用いて成形体を成形し、前記金型は、対をなす第1及び第2分割金型と、可動部とを有し、第1及び第2分割金型のそれぞれは、キャビティ部と、内側ピンチオフ部と、外側ピンチオフ部とを有し、前記内側ピンチオフ部は、前記キャビティ部に接続され、前記外側ピンチオフ部は、前記キャビティ部に対して前記内側ピンチオフ部よりも離れた位置に設けられ、前記可動部は、第1及び第2分割金型に対して相対移動可能に付設され、且つ、前記可動部は、係合部を有し、前記成形体は、成形体本体と、内側ライン部と、内側バリ部と、外側ライン部と、外側バリ部とを有し、前記成形体本体は、前記成形工程において前記キャビティ部内で成形され、前記内側ライン部は、前記成形工程において前記内側ピンチオフ部に押し潰され、前記内側バリ部は、前記内側ライン部と前記外側ライン部との間に形成され、前記外側ライン部は、前記成形工程において前記外側ピンチオフ部に押し潰され、前記外側バリ部は、前記外側ライン部に連結され、前記係合工程では、前記外側バリ部を前記可動部の前記係合部に係合させ、前記切断工程では、前記外側バリ部を前記係合部に係合させた状態で前記可動部を第1及び第2分割金型に対して相対移動させることによって、前記外側ライン部に沿うように前記外側バリ部を前記内側バリ部から切断する、方法。
好ましくは、第1分割金型及び前記可動部を平面視したときにおいて、前記外側ピンチオフ部が、前記係合部に沿うように形成されている、方法が提供される。
好ましくは、前記外側ピンチオフ部の頂部の面が、前記係合部の頂部の面に一致している、方法が提供される。
好ましくは、前記可動部は、吸引部を更に有し、前記係合工程では、前記吸引部を介して前記外側バリ部を前記係合部に吸引し、前記外側バリ部を前記係合部に賦形させることで、前記外側バリ部を前記係合部に係合させている、方法が提供される。
好ましくは、第1分割金型は、端面部を有し、前記可動部は、突き当て面部を有し、前記係合工程では、前記突き当て面部が前記端面部に突き当てられた状態で、前記吸引部を介して前記外側バリ部を前記係合部に吸引する、方法が提供される。
好ましくは、前記金型は、シール部材を更に有し、前記シール部材は、前記端面部又は前記突き当て面部に取り付けられている、方法が提供される。
好ましくは、第1分割金型は、第1外側部を有し、第1外側部には、第1分割金型の前記内側ピンチオフ部及び前記外側ピンチオフ部が形成され、且つ、第1外側部には、前記端面部が形成され、第2分割金型は、第2外側部を有し、第2外側部には、第2分割金型の前記内側ピンチオフ部及び前記外側ピンチオフ部が形成され、且つ、第2外側部は、第1及び第2分割金型の開閉方向において、第1外側部に対向するように配置されている、方法が提供される。
好ましくは、前記成形体は、樹脂シートと、表皮材と有し、前記表皮材は、前記樹脂シートの外側に配置されている、方法が提供される。
好ましくは、第1及び第2分割金型のそれぞれには、減圧吸引穴が形成され、前記減圧吸引穴は、前記キャビティ部に形成されており、且つ、前記減圧吸引穴は、前記樹脂シートを第1及び第2分割金型に賦形するように形成され、前記樹脂シートが第1及び第2分割金型に賦形された状態において、前記キャビティ部に配置された前記表皮材は、第1分割金型に沿うように設けられ、前記減圧吸引穴は、第1分割金型の第1外側部には形成されていない、方法が提供される。
好ましくは、第1外側部と第2外側部との間には、表皮材逃し空間が形成されており、前記成形工程において、前記表皮材逃し空間には、前記表皮材の端部が配置されている、方法が提供される。
本発明によれば、金型及び外枠を用いた構造体の製造方法であって、垂下工程と、吸着工程と、賦形工程と、を備え、前記垂下工程では、溶融した樹脂シートを前記金型の正面に垂下し、前記金型は、キャビティ部と、ピンチオフ部と、面取り部とを有し、前記面取り部は、前記外枠と前記ピンチオフ部との間に設けられ、且つ、前記ピンチオフ部から前記外枠に向かう方向において、垂下された前記樹脂シートとの間隔が広がるように形成され、前記吸着工程では、前記外枠を前進させて前記外枠で前記樹脂シートを吸着し、前記外枠と前記樹脂シートと前記金型との間に閉空間を形成し、前記外枠は、前記金型の周囲に配置され、且つ、前記樹脂シートを吸着可能に構成され、前記賦形工程では、前記外枠を後退させ、且つ、前記閉空間を減圧して前記キャビティ部に前記樹脂シートを賦形し、前記樹脂シートは、前記外枠が後退することで前記外枠と共に移動し、前記面取り部に沿うように配置される、方法が提供される。
好ましくは、前記面取り部は、テーパー面で構成されている、方法が提供される。
好ましくは、前記テーパー面の傾斜角は、60度以下である、方法が提供される。
好ましくは、前記賦形工程において、前記外枠は、前記面取り部の後端部の位置まで後退する、方法が提供される。
好ましくは、前記賦形工程において、前記外枠の後退距離は、30mm以上、80mm以下である、方法が提供される。
好ましくは、前記製造方法では、可動部を更に用い、且つ、前記製造方法は、成形工程を更に備え、前記金型は、第1及び第2分割金型を有し、前記可動部は、第1分割金型に対して相対移動し、前記樹脂シートの一部を切断するように構成され、且つ、第1分割金型の周囲に付設され、第2分割金型は、前記面取り部を有し、前記外枠は、第2分割金型の周囲に配置され、前記成形工程では、第1及び第2分割金型を型閉じし、前記成形工程が完了した状態では、前記可動部の少なくとも一部が、前記面取り部の前端部の位置よりも、前記外枠寄りに配置されている、方法が提供される。
好ましくは、前記面取り部は、前記金型の開閉方向の幅が、10mm以上、63mm以下である、方法が提供される。
好ましくは、前記面取り部は、前記ピンチオフ部から前記外枠に向かう方向の幅が、5.7mm以上、70mm以下である、方法が提供される。
本発明によれば、樹脂パネル体を備えるパネルであって、前記樹脂パネル体は、一体に設けられた第1本体部と第2本体部とヒンジ部とを備え、前記ヒンジ部は、ヒンジ片とスリットとを持ち、前記ヒンジ片は、前記第1本体部と前記第2本体部とを回動可能に連結し、前記スリットは、前記ヒンジ片の隣に設けられて前記第1本体部と前記第2本体部とを分離する、パネルが提供される。
好ましくは、表皮材を備え、前記表皮材は、前記ヒンジ部をまたいで前記第1本体部および前記第2本体部に貼り付けられる。
好ましくは、前記ヒンジ部の両端にわたる長さが全長L0であり、前記スリットの長さの合計がスリット合計長LSであるとしたときに、LS/L0が0.50~0.99である。
好ましくは、前記ヒンジ片は、端部ヒンジ片を含み、前記端部ヒンジ片は前記ヒンジ部の両端それぞれに設けられる。
好ましくは、前記ヒンジ片は、中間ヒンジ片を含み、前記中間ヒンジ片は前記端部ヒンジ片の間に設けられる。
1 樹脂製パネル1について
図1に示すように、本発明の一実施形態に係る樹脂製パネル1(「構造体」の一例)は、平面視において略矩形状の樹脂成形体2に覆われたパネルである。
コア材3の両面は、樹脂成形体2に密着している。コア材3は、基体3a,3bとこれを連結する補強部材3cで構成される。補強部材3cは、断面形状の一定の細長い部材である。基体3a,3bは、例えば発泡体で構成される。
補強部材3cは、略H形状であり、上壁3c1と、下壁3c2と、これらを連結する柱部3c3で構成される。上壁3c1の幅方向の両端部には、下壁3c2に向かって突出する突起3c11が設けられている。下壁3c2の幅方向の両端部には、上壁3c1に向かって突出する突起3c21が設けられている。突起3c11,3c21が基体3a,3bに係合することによって、基体3a,3bと補強部材3cが一体化される。基体3a,3bの端部には、一段下がった凹部3a1,3b1が設けられており、上壁3c1と下壁3c2が凹部3a1,3b1に収容されることによって、基体3a,3bと補強部材3cの上面及び下面が略面一になっている。
2-1 製造装置の説明
図3に示すように、実施形態に係る製造方法では、成形機10及び挿入装置19を用いて、図15に示す成形体5を形成する。図3~図9に示すように、成形機10は、一対のシート形成装置14と、第1及び第2分割金型21,22と、可動部23と、駆動機構24とを備える。
図3に示すように、シート形成装置14は、ホッパー12と、押出機13と、アキュームレータ17と、Tダイ18を備える。押出機13とアキュームレータ17は、連結管15を介して連結される。アキュームレータ17とTダイ18は、連結管16を介して連結される。以下、各構成について詳細に説明する。
ホッパー12は、原料樹脂11を押出機13のシリンダ13a内に投入するために用いられる。原料樹脂11の形態は、特に限定されないが、通常は、ペレット状である。原料樹脂は、例えばポリオレフィンなどの熱可塑性樹脂であり、ポリオレフィンとしては、低密度ポリエチレン、直鎖状低密度ポリエチレン、高密度ポリエチレン、ポリプロピレン、エチレン-プロピレン共重合体及びその混合物などが挙げられる。原料樹脂11は、粉砕機でバリ部が粉砕されて製造された再生原料を含んでもよい。原料樹脂11は、ホッパー12からシリンダ13a内に投入された後、シリンダ13a内で加熱されることによって溶融されて溶融樹脂になる。また、シリンダ13a内に配置されたスクリューの回転によってシリンダ13aの先端に向けて搬送される。スクリューは、シリンダ13a内に配置され、その回転によって溶融樹脂を混練しながら搬送する。スクリューの基端にはギア装置が設けられており、ギア装置によってスクリューが回転駆動される。
原料樹脂は、シリンダ13aの樹脂押出口から押し出され、連結管15を通じてアキュームレータ17内に注入される。アキュームレータ17は、シリンダ17aとその内部で摺動可能なピストン17bを備えており、シリンダ17a内に溶融樹脂11aが貯留可能になっている。そして、シリンダ17a内に溶融樹脂11aが所定量貯留された後にピストン17bを移動させることによって、連結管16を通じて溶融樹脂11aをTダイ18内に設けられたスリットから押し出して垂下させて溶融状態の樹脂シートp1,p2を形成する。
図11に示すように、樹脂シートp1,p2は、第1及び第2分割金型21、22間に導かれる。第1及び第2分割金型21、22は、型閉じの際に当接するパーティング面で分割可能になっており、第1及び第2分割金型21、22によって成形体5が形成される。つまり、成形工程では、分割可能な一対の第1及び第2分割金型21、22を用いて成形体5が形成される。また、実施形態では、第1及び第2分割金型21、22間には、表皮逃し空間sp(図13参照)が形成される。表皮逃し空間spは、成形時において、表皮材4の端部が配置される。
第1分割金型21は、図7、図8、図13及び図14に示すように、本体部21a1と、一対の第1外側部21a2と、端面部21a3とを備えている。本体部21a1には、キャビティ部cvt(図12参照)が形成されている。第1及び第2分割金型21,22が閉じている状態において、キャビティ部cvtは、第1分割金型21と第2分割金型22との間に形成される閉空間であり、成形体が成形される空間である。第1外側部21a2は、本体部21a1の幅横方向の端部(左右の端部)に接続されている。なお、横幅方向とは、第1及び第2分割金型21,22の開閉方向に直交し、且つ、上下方向に直交する方向である。端面部21a3には、可動部23が突き当てられる面が形成されている。実施形態では、端面部21a3は、第1外側部21a2の側面に形成されている。
第2分割金型22は、図13に示すように、本体部22a1と、一対の第2外側部22a2と、一対の対向部22a3とを備えている。本体部22a1には、キャビティ部cvt(図12参照)が形成されている。第2外側部22a2は、本体部22a1の幅横方向の端部(左右の端部)に接続されている。また、各対向部22a3は、各第2外側部22a2の横幅方向の端部に接続されている。対向部22a3は、可動部23に対向するように配置されている。
表皮材逃し空間spは、余分な表皮材4が配置される空間である。また、表皮逃し空間spには、表皮材4の端部が配置される。表皮材逃し空間spは、第1及び第2分割金型21,22の間に形成されている。具体的には、表皮材逃し空間spは、第1外側部21a2と第2外側部22a2との間の空間であり、且つ、内側ピンチオフ部21d1及び内側ピンチオフ部22d1と、外側ピンチオフ部21d2及び外側ピンチオフ部22d2との間の空間である。
成形時に使用する表皮材4は、キャビティ部cvtのサイズよりも大きくなっている。このため、成形時には、余分な表皮材4が発生する。なお、余分な表皮材4は、後工程において、オペレーターによって切除される。また、バリ部を構成する原料樹脂11は、再利用可能であるが、余分な表皮材4が、原料樹脂11に対応する樹脂シートp1に付着してしまうと、強固に接着してしまい、表皮材4を樹脂シートp1から剥がすことが困難になる場合がある。剥がすことができない場合、バリ部は破棄されることのなるため、樹脂の再利用ができなくなる。そこで、実施形態では、第1及び第2分割金型21,22に表皮材逃し空間spが形成されている。
横幅寸法w1は、例えば、15.0,15.5,16.0,16.5,17.0,17.5,18.0,18.5,19.0,19.5,20.0,20.5,21.0,21.5,22.0,22.5,23.0,23.5,24.0,24.5,25.0(mm)に設定することが好ましく、また、横幅寸法w1は、ここで例示した数値の何れか2つの間の範囲内であってもよい。
また、表皮材逃し空間spの深さ寸法w2は、例えば、4.0,4.2,4.4,4.6,4.8,5.0,5.2,5.4,5.6,5.8,6.0,6.2,6.4,6.6,6.8,7.0,7.2,7.4,7.6,7.8,8.0(mm)に設定することが好ましく、また、深さ寸法w2は、ここで例示した数値の何れか2つの間の範囲内であってもよい。
このように、表皮材逃し空間spの横幅寸法w1及び表皮材逃し空間spの深さ寸法w2が設定されていることで、表皮材4と樹脂シートp1とが接着することを抑制することができる。
可動部23は、バリ部と係合し、バリ部を切断する機能を有する。可動部23は、第1及び第2分割金型21,22に対して相対移動可能に設けられている。図9A~図10B、及び図13に示すように、可動部23は、第1分割金型21の第1外側部21a2の側方に付設されている。可動部23は、対向面部23aと、突き当て面部23bと、吸引部23cと、係合部23dと、シール部材23eとを備えている。
図5に示すように、駆動機構24は、第1分割金型21の背面部に配置されている。駆動機構24は、可動部23を駆動するように構成されている。駆動機構24は、図5に示すように、一対の上駆動機構24aと、一対の下駆動機構24bとを備えている。各上駆動機構24a及び各下駆動機構24bは、例えば、シリンダ等で構成することができる。各上駆動機構24a及び各下駆動機構24bは、第1分割金型21及び可動部23に跨って設けられ、各上駆動機構24a及び各下駆動機構24bは、第1分割金型21及び可動部23に固定されている。各上駆動機構24aのシリンダ及び各下駆動機構24bのシリンダが伸長することで、可動部23が移動する。
各上駆動機構24a及び各下駆動機構24bは、独立して制御可能となっている。このため、駆動機構24は、図10A及び図10Bに示すように、可動部23の上部を移動させてから、可動部23の下部を移動させることが可能となっている。これにより、バリ部を引き裂く力が局所的になり、可動部23は、円滑にバリ部を引き裂くことができる。
挿入装置19は、図示しない駆動機構によって移動可能に構成されている。図4Aに示すように、挿入装置19は、ベース19aと、吸着パッド19bと、メス型突起19cを備える。各部材は、ベース9aによって保持される。吸着パッド9bは、コア材3を吸着保持するために用いられる。メス型突起19cは、表皮材4を保持可能になっており、表皮材4を第1分割金型21に装着するために用いられる。
樹脂製パネル1は、以下に説明する成形体5(図15参照)のバリ部を除去することで得られる。つまり、成形体5は、金型で成形した後であって、バリ部を除去する前の状態の成形体である。
また、大バリ部5bは、成形体本体5aの上部に位置する上バリ部5buと、成形体本体5aの下部に位置する下バリ部5bbと、上バリ部5buと下バリ部5bbとの間に位置する外側バリ部5bc2とから構成されている。外側バリ部5bc2は、可動部23に切断される前において、内側バリ部5bc1に連結されている。
また、切断ライン5cの上ライン5cuは、パーティングライン5fの上ライン5fuの上側に隣接した位置に設けられている。このため、成形品5dと小バリ部5eは、上ライン5fuを介して連結されている。
更に、切断ライン5cの左ライン5cl及び右ライン5crは、それぞれ、パーティングライン5fの左ライン5fl及び右ライン5frの側方に隣接した位置に設けられている。このため、成形品5dと内側バリ部5bc1とは、左ライン5cl及び右ライン5crを介して連結されている。
本実施形態の樹脂製パネル1の製造方法は、表皮材装着工程と、垂下工程と、樹脂シート賦形工程と、コア材溶着工程と、成形工程と、係合工程と、第1切断工程と、成形体取り出し工程と、第2切断工程と、後工程とを備える。
表皮材装着工程では、表皮材4を第1分割金型21に装着する。具体的には、メス型突起19cを、表皮材4に形成しておいた貫通穴に予め挿入しておき、図3に示すように、表皮材4を挿入装置19に保持させておく。表皮材装着工程では、メス型突起19cとオス型突起21eを対向させた後に、両者を係合させ、その状態で、表皮材4をオス型突起21e側へ押すことによって表皮材4をオス型突起21eに移動させる。これにより、図11に示すように、表皮材4が第1分割金型21に装着される。
垂下工程では、図11に示すように、第1及び第2分割金型21、22間に、Tダイ18から押し出された樹脂シートp1,p2を垂下する。樹脂シートp1は、コア材3と表皮材4の間に垂下される。樹脂シートp2は、挿入装置19と第2分割金型22の間に垂下される。本実施形態では、Tダイ18から押し出された樹脂シートp1,p2をそのまま使用するダイレクト真空成形が行われるので、樹脂シートp1,p2は、成形前に室温にまで冷却されて固化されることがなく、固化された樹脂シートp1,p2が成形前に加熱されることもない。
樹脂シート賦形工程の実施にあたっては、樹脂シートp1と第1分割金型21の突出部(例えば、ピンチオフ部)とを予め密着させておき、樹脂シートp1と第1分割金型21との間に密閉空間を形成しておく。樹脂シートp2及び第2分割金型22についても同様である。なお、密閉空間の形成にあたっては、第1及び第2分割金型21,22とは別体の外枠(図示省略)を用いてもよい。各外枠は、第1及び第2分割金型21,22の周面部に配置される。そして、各外枠は、第1及び第2分割金型21,22の開閉方向に移動自在であり、減圧吸引穴が形成されている。第1分割金型21の外枠は、樹脂シートp1を吸引することで密着し、密閉空間が、第1分割金型21と樹脂シートp1と外枠との間に形成される。第2分割金型22の外枠についても同様である。
そして、樹脂シート賦形工程では、第1及び第2分割金型21、22の減圧吸引穴hlを介して、当該密閉空間内の空気を減圧吸引し、樹脂シートp1,p2を第1及び第2分割金型21、22に賦形する。第1分割金型21では、樹脂シートp1は、キャビティ部の内面21bの外形に沿った形状に賦形される。樹脂シートp2は、キャビティ部の内面22bに沿った形状に賦形される。樹脂シートp1,p2を賦形するタイミングは、ずれていてもよく、例えば、コア材溶着工程の後に樹脂シートp2を賦形したり、型締め工程において樹脂シートp2を賦形したりしてもよい。
コア材溶着工程では、コア材3を樹脂シートp1に溶着させる。図11に示すように、挿入装置19は、表皮材4を第1分割金型21に装着させているため、挿入装置19には、コア材3が残されている。この状態で、挿入装置19を樹脂シートp1に向かって移動させることによって、コア材3を樹脂シートp1に溶着させることができる。コア材3を樹脂シートp1に溶着させた後、挿入装置19を第1及び第2分割金型21、22の移動軌跡外の位置に移動させる
成形工程では、第1及び第2分割金型21、22を図11中の矢印C1,C2の方向に移動させることによって、第1及び第2分割金型21、22を閉じる。これにより、ピンチオフ部21d及びピンチオフ部22dに対応する部位において樹脂シートp1,p2が押し潰されるとともに溶着され、図15に示す成形体5が形成される。
係合工程では、成形体5の外側バリ部5bc2を可動部23に賦形し、外側バリ部5bc2を可動部23に係合させる工程(バリ部賦形工程)である。つまり、係合工程では、図13に示すように、吸引部23cを介して外側バリ部5bc2を係合部23dに吸引することで、外側バリ部5bc2の樹脂シートp1を係合部23dに沿うように賦形させる。
係合工程後において、成形体本体5aは第1及び第2分割金型21,22内に収納されており、大バリ部5bが第1分割金型21の可動部23に設けられた係合部23dに係合されている。この状態で、図10Aに示すように、可動部23の上側が本体部22a1から離れるように傾斜させると、切断ライン5cの左ライン5cl及び右ライン5crに沿って成形体5が上側から裂けるように切断され始める。次に、図10Bに示すように、可動部23の下側が第1分割金型21から離れるように、可動部23を移動させると、成形体5の裂けが下方に向かって進行し、第1切断工程が完了する(図15参照)。
成形体取り出し工程では、図示省略の挟持装置で、例えば上バリ部5bu等のバリ部を挟持した状態で、第1及び第2分割金型21、22を開く。その後、成形体5が、挟持装置によって次工程を実施するための所望の場所へ搬送される。図16に示すように、成形体5は、切断ライン5cの左ライン5cl及び右ライン5crに沿って切断されている。一方、成形体5は、切断ライン5cの上ライン5cu及び下ライン5cbに沿って切断されていない。上ライン5cu及び下ライン5cbの何れかに沿って成形体5が切断されていると、成形体本体5aが大バリ部5bに対して揺れやすくなって、扱いにくくなるが、本実施形態では、この時点では、左ライン5cl及び右ライン5crのみに沿って成形体5が切断されているので、成形体5の扱いが容易である。
第2切断工程では、上ライン5cu及び下ライン5cbに沿って成形体5を切断して、成形体5を成形体本体5aと大バリ部5bに分離する。第2切断工程には、例えば、上ライン5cu及び下ライン5cbの位置を認識して自動的に切断ラインを切断することができる切断装置を用いることができる。
後工程では、小バリ部5e及び内側バリ部5bc1を除去して、樹脂製パネル1を得る。この工程は、オペレーターが実施することができる。
3-1 可動部23の減圧吸引機能について
実施形態における係合工程(バリ部賦形工程)では、吸引部23cを介して外側バリ部5bc2を可動部23の係合部23dに吸引する。これにより、外側バリ部5bc2が可動部23に賦形され、外側バリ部5bc2が可動部23により確実に係合する。したがって、可動部23を第1及び第2分割金型21,22に対して相対移動させたときにおいて、外側バリ部5bc2が可動部23に対して滑ることが抑制されて、外側バリ部5bc2が可動部23に追従するように移動し、その結果、外側バリ部5bc2がより確実に成形体本体5aから切断される。
実施形態において、第1及び第2分割金型21,22は、二重のピンチオフ構造を有する。つまり、第1及び第2分割金型21,22のそれぞれが、キャビティ部cvtに接続されている内側ピンチオフ部21d1,22d1と、キャビティ部cvtに対して内側ピンチオフ部21d1,22d1よりも離れた位置に設けられた外側ピンチオフ部21d2,22d2とを有する。ここで、内側ピンチオフ部21d1,22d1は、成形体本体5aの形状に対応するような形状である必要がある。その一方で、外側ピンチオフ部21d2,22d2は、内側バリ部5bc1と外側バリ部5bc2とを区画する位置に配置される。そして、内側バリ部5bc1及び外側バリ部5bc2は、共に切断されるものであり、製品上は不要な部分である。つまり、外側ピンチオフ部21d2,22d2は、キャビティ部cvtに接続されていない部分であり、且つ、製品上は不要な内側バリ部5bc1及び外側バリ部5bc2を区画するものであるため、外側ピンチオフ部21d2,22d2は、内側ピンチオフ部21d1,22d1のように成形体本体5aに合わせた形状にするという制約が抑制されている。このため、実施形態では、外側ピンチオフ部21d2,22d2の形状を、可動部23との繋がりを加味した形状に容易に設定することができる。つまり、バリ部の切断ラインがいびつになることが回避され、バリ部が切断されにくくなることを抑制することができる。
従来の金型のように、外側ピンチオフ部21d2,22d2を備えていない金型で上述のようなヒンジ部を有する樹脂製パネルを製造すると、ヒンジ部におけるバリ部の切断ラインがいびつになる上、金型設計が複雑になる。それに対し、実施形態では、外側ピンチオフ部21d2,22d2の形状を、内側ピンチオフ部21d1,22d1の形状に制約を受けずに、決定することができる。このため、実施形態では、バリ部の切断ラインがいびつになることが回避され、バリ部が切断されにくくなることを抑制することができる。また、第1及び第2分割金型21,22の構成が入り組んだ複雑な構成となることを回避することができるため、金型設計を行いやすい。
実施形態では、表皮材4の端部が、外側ピンチオフ部21d2,22d2よりも内側であるため、可動部23が表皮材4自体を切断する構成ではない。このため、実施形態は、成形体本体5aが不良品となることを回避することができ、歩留まりを向上させることができる。
なお、表皮材4が仮に外側バリ部5bc2にまで及んでいる場合において、表皮材4が可動部23によって切断されなかったとしても、めくれが発生する部分は、不要な内側バリ部5bc1である。つまり、実施形態は、二重のピンチオフ構造を採用しているため、表皮材4が仮に外側バリ部5bc2にまで及んでいる場合であっても、成形体本体が不良品となることを回避することができ、歩留まりを向上させることができる。
4-1 変形例1
図17に示すように、実施形態で説明した外側ピンチオフ部21d2,22d2が、第1及び第2分割金型21,22に設けられていなくても、実施形態で説明した可動部23の減圧吸引機能の効果を得ることができる。つまり、図17に示す形態であっても、外側バリ部5bc2が可動部23により確実に係合し、外側バリ部5bc2がより確実に成形体本体5aから切断される。
なお、本変形例1では、第1及び第2分割金型21,22には、外側ピンチオフ部21d2,22d2が設けられていないため、図18に示すように、切断工程では、内側バリ部5bc1と外側バリ部5bc2とが切断されることがなく、内側バリ部5bc1が成形体本体5aから切断されることになる。このとき、第1外側部21a2には、減圧吸引穴hlが形成されていないので、樹脂シートp1と表皮材4とが接着されることが抑制されており、可動部23が駆動しても、表皮材4がバリ部と一緒に切断されてしまうことが回避されている。このため、樹脂を再利用するときに、切断した内側バリ部5bc1及び外側バリ部5bc2の連結体から、表皮材4を剥がす手間を省くことが可能である。
第1分割金型21と可動部23は、駆動機構24を介して連結している。ここで、駆動機構24のストロークが大きい場合や、第1分割金型21及び可動部23の構造によっては、可動部23が第1分割金型21から脱落して可動部23が初期位置に戻りにくくなってしまう可能性がある。例えば、駆動機構24のストロークが大きい場合、可動部23は第1分割金型21と接触しなくなり、可動部23が第1分割金型21から脱落する。このとき、可動部23は駆動機構24を介して第1分割金型21に連結しているため、可動部23が床面に落下することはない。しかし、可動部23を元の初期位置に戻そうとして、駆動機構24を駆動させたとき、可動部23が第1分割金型21の側面に干渉して、可動部23を初期位置に復帰させることができなくなる場合がある。このような場合には、例えばオペレーターが脱落の都度、可動部23を初期位置へ移動させる必要が生じる。
1 樹脂製パネル1について
第3観点の実施形態に係る樹脂製パネル1(「構造体」の一例)の構成は、第1及び第2観点の実施形態に係る樹脂製パネル1と同様(第1及び第2観点の「1 樹脂製パネル1について」参照)であるため、説明を省略する。
2-1 製造装置の説明
図21に示すように、実施形態に係る製造方法では、成形機10及び挿入装置19を用いて、図15に示す成形体5を形成する。図21~図22に示すように、成形機10は、一対のシート形成装置14と、金型(第1及び第2分割金型21,22)と、外枠31,32と、可動部23とを備える。なお、図示省略しているが、成形機10は、図25A~図25Cに示すように、可動部23を第1分割金型21から離間するように動作させる不図示の駆動機構(図5の駆動機構24参照)も備えている。この駆動装置は、図25B及び図25Cに示すように可動部23の上部を移動させてから、可動部23の下部を移動させることが可能となっており、円滑にバリ部(樹脂シートの一部)を引き裂くことができる。
図21に示す第3観点の実施形態に係るシート形成装置14や使用する樹脂は、第1及び第2観点の実施形態で説明したシート形成装置14や使用する樹脂と同様(第1及び第2観点の「2-1-1 シート形成装置14の構成」参照)であるため、説明を省略する。
図26に示すように、樹脂シートp1,p2は、第1及び第2分割金型21、22間に導かれる。第1及び第2分割金型21、22は、型閉じの際に当接するパーティング面で分割可能になっており、第1及び第2分割金型21、22によって成形体5(図15参照)が形成される。つまり、成形工程では、分割可能な一対の第1及び第2分割金型21、22を用いて成形体5が形成される。また、実施形態では、第1及び第2分割金型21、22間には、表皮逃し空間sp(図33及び図34参照)が形成される。表皮逃し空間spは、成形時において、表皮材4の端部が配置される。
第1分割金型21は、図24に示すように、本体部21a1と、一対の第1外側部21a2と、端面部21a3(図34参照)とを備えている。本体部21a1には、キャビティ部cvtが形成されている。第1及び第2分割金型21,22が閉じている状態において、キャビティ部cvtは、第1分割金型21と第2分割金型22との間に形成される閉空間であり、成形体が成形される空間である。第1外側部21a2は、本体部21a1の幅横方向の端部(左右の端部)に接続されている。なお、横幅方向とは、第1及び第2分割金型21,22の開閉方向に直交し、且つ、上下方向に直交する方向である。端面部21a3には、可動部23が突き当てられる面が形成されている。実施形態では、端面部21a3は、第1外側部21a2の側面に形成されている。
第2分割金型22は、図22及び図23に示すように、本体部22a1と、一対の第2外側部22a2と、一対の対向部22a3と、4つの面取り部22a4とを備えている。本体部22a1には、キャビティ部cvtが形成されている。第2外側部22a2は、本体部22a1の幅横方向の端部(左右の端部)に接続されている。また、各対向部22a3は、各第2外側部22a2の横幅方向の端部に接続されている。対向部22a3は、可動部23の係合部23dに対向するように配置されている。各対向部22a3は、平坦面で構成されており、上下の面取り部22a4と、左右の面取り部22a4のうちの一方と、に接続されている。
図22及び図23に示すように、外枠31,32は、第2分割金型22の周囲に配置されている。具体的には、外枠31は、第2分割金型22の上部及び下部にそれぞれ付設され、外枠32は、第2分割金型22の左右の側部にそれぞれ付設されている。外枠31,32は、金型の開閉方向に平行に移動可能に構成されている。換言すると、外枠31,32は、金型の開閉方向に前進及び後退が可能に構成されている。外枠31,32の前端面には、吸引穴31a,32aがそれぞれ形成されており、外枠31,32は、吸引穴31a,32aから空気を吸引することで樹脂シートp2を吸着可能になっている。
図33及び図34に示す第3観点の実施形態に係る表皮材逃し空間spは、第1及び第2観点の実施形態で説明した表皮材逃し空間spと同様(第1及び第2観点の「<表皮材逃し空間sp>参照)であるため、説明を省略する。
可動部23は、バリ部と係合し、バリ部を切断する機能を有する。可動部23は、図25A~図25Cに示すように、第1分割金型21に対して相対移動可能に設けられている。可動部23は、図25Bに示すように、第1分割金型21の第1外側部21a2の側方に付設されている。可動部23は、図34に示すように、対向面部23aと、突き当て面部23bと、吸引部23cと、係合部23dと、シール部材23eと、吸引部23gとを備えている。
第3観点の実施形態における挿入装置19の構成は、第1及び第2観点の実施形態における挿入装置19と同様であるため、説明を省略する。
第3観点の実施形態に係る成形体5の構成は、第1及び第2観点の実施形態に係る成形体5と同様(第1及び第2観点の「2-2 成形体5」を参照)であるため、説明を省略する。
本実施形態の樹脂製パネル1の製造方法は、表皮材装着工程と、垂下工程と、吸着工程と、賦形工程と、コア材溶着工程と、成形工程と、第1切断工程と、成形体取り出し工程と、第2切断工程と、後工程とを備える。
表皮材装着工程では、メス型突起19cを、表皮材4に形成しておいた貫通穴に予め挿入しておき、図21に示すように、表皮材4を挿入装置19に保持させておく。以下、本工程は、第1及び第2観点の「2-3-1 表皮材装着工程」と同様であるため、説明を省略する。
垂下工程では、図26に示すように、第1及び第2分割金型21、22間に、Tダイ18から押し出された樹脂シートp1,p2を垂下する。以下、本工程は、第1及び第2観点の「2-3-2 垂下工程」と同様であるため、説明を省略する。
吸着工程では、図27~図29に示すように、第1分割金型21及び可動部23が一緒に前進し、吸引部23gが樹脂シートp1に接触する。そして、樹脂シートp1は、吸引部23gの吸引穴23g1の吸引作用によって吸引部23gの前端面に吸着される。なお、第1分割金型21も同様に前進しているため、図27に示すように、上下の吸引部21Aも、樹脂シートp1に接触する。そして、樹脂シートp1は、吸引部21Aの吸引穴21Bの吸引作用によって吸引部21Aの前端面に吸着される。これにより、図29に示すように、樹脂シートp1と第1分割金型21と可動部23との間には、密閉空間SD1が形成される。
図30に示すように、賦形工程では、第1及び第2分割金型21、22の減圧吸引穴hlや可動部23の吸引部23cを介して、密閉空間SD1,SD2内の空気を減圧吸引し、樹脂シートp1,p2を第1及び第2分割金型21、22及び可動部23に賦形する。また、賦形工程では、吸着工程において前進させていた外枠31,32を後退させる。具体的には、外枠31,32の前端面の位置が、面取り部22a4の後端部22abの位置にくるまで、外枠31,32を後退させる。
なお、外枠31,32の後退速度を遅くして樹脂シートp1の追従性を向上させる方法も考えられるが、このような方法では、成形体5の成形時間が長くなるだけでなく、その他の工程の製造条件に制約を生じさてしまうというデメリットがある。しかし、実施形態に係る製造方法では、外枠31,32の後退速度を遅くする必要はなく、成形体5の成形時間が長くなることを回避し、また、製造条件に制約を生じさせることも回避することができる。
図30及び図31に示すように、挿入装置19は、表皮材4を第1分割金型21に装着させているため、挿入装置19には、コア材3が残されている。この状態で、挿入装置19を樹脂シートp1に向かって移動させることによって、コア材3を樹脂シートp1に溶着させることができる。以下、本工程は、第1及び第2観点の「2-3-4 コア材溶着工程」と同様であるため、説明を省略する。
成形工程では、第1及び第2分割金型21,22の型閉じを実施する。これにより、ピンチオフ部21d及びピンチオフ部22dに対応する部位において樹脂シートp1,p2が押し潰されるとともに溶着され、図15に示す成形体5が形成される。
なお、成形工程が完了した状態では、可動部23の少なくとも一部(実施形態では吸引部23g)が、面取り部22a4の前端部22afの位置よりも、外枠32寄りに配置されている。図示省略しているが、吸引部21Aも同様であり、吸引部21Aが、面取り部22a4の前端部22afの位置よりも、外枠31寄りに配置されている。賦形工程において、外枠31,32を適切に後退させているので、部材同士の接触が回避されている。
これらの工程は、第1及び第2観点の「2-3-7 第1切断工程」~「2-3-10 後工程」と同様であるため、説明を省略する。
面取り部22a4は、テーパー面に限定されるものではない。外側ピンチオフ部22d2から外枠32に向かう方向において、面取り部22a4と樹脂シートP2との間隔が広がる形状であればよい。例えば、面取り部22a4は、傾きが異なる複数のテーパー面(複数の傾斜面)で構成されていてもよい。
また、実施形態では、面取り部22a4のテーパー面が平面状に形成されていたが、曲面状に形成されていてもよいし、平面状の部分と曲面状の部分が組み合わせられていてもよい。
また、外側ピンチオフ部22d2から外枠32に向かう方向において、面取り部22a4と樹脂シートP2との間隔が広がるのであれば、面取り部22a4が、1つ又は複数の段差部(階段状に形成された部分)を備えていてもよい。
1 パネルの構成
図35~図38を用いてパネル101の構成を説明する。図35Aおよび図35Bに示すように、パネル101は、樹脂パネル体102と表皮材108とを備える。樹脂パネル体102は、第1本体部102aと第2本体部102bとヒンジ部105とが一体に設けられたものである。図35Aは樹脂パネル体102の表面側(表側)を図示しており、樹脂パネル体102の表面全体を覆うように表皮材108が貼り付けられている。表皮材108は、ヒンジ部105をまたいで第1本体部102aおよび第2本体部102bに貼り付けられる。樹脂パネル体102の裏面は露出している。
以下、パネル101の製造方法の一例を説明する。本実施形態の方法は、準備工程とスリット切込工程と貼付工程を備える。具体的には、まず準備工程でスリット形成前の樹脂パネル体102が準備される。その樹脂パネル体102にスリット105sの形成および表皮材108の貼り付けが行われる。
まず、図40を用いて、樹脂パネル体102の製造方法の実施に利用可能な成形機10について説明する。成形機10は、一対のシート形成装置14と、金型121,131を備える。各シート形成装置14は、ホッパー12と、押出機13と、アキュームレータ17と、Tダイ18を備える。押出機13とアキュームレータ17は、連結管15を介して連結される。アキュームレータ17とTダイ18は、連結管16を介して連結される。
図40に示す第4観点の実施形態に係るシート形成装置14や使用する樹脂は、第1及び第2観点の実施形態で説明したシート形成装置14や使用する樹脂と同様(第1及び第2観点の「2-1-1 シート形成装置14の構成」参照)であるため、説明を省略する。
樹脂シート123,133は、開閉可能な金型121,131を開いた状態で金型121,131の間に押し出される。図40に示すように、金型121,131は、キャビティ面121a,131aを有し、キャビティ面121a,131aを取り囲むようにピンチオフ部121b,131bが設けられている。キャビティ面121a,131a内には、減圧吸引孔(図示せず)が設けられており、減圧吸引孔を通じて樹脂シート123,133を減圧吸引してキャビティ面121a,131aに沿った形状に賦形することが可能になっている。樹脂シート123,133の厚さは、例えば、0.5~2mmであり、具体的には例えば、0.5、1.0、1.5、2.0mmであり、ここで例示した数値の何れか2つの間の範囲内であってもよい。
準備工程では、スリット105s形成前の段階の樹脂パネル体102が準備される。本実施形態の準備工程は、より詳しくは、押出工程と、賦形工程と、型閉じ工程を備える。
次に、樹脂パネル体102のヒンジ部105に、予め定めた個数および長さのスリット105sが設けられる。スリット105sを形成する具体的手段に限定はなく、例えばプレス、超音波カッター、またはナイフ等が用いられてもよい。
次に、表皮材108を樹脂パネル体102に接着剤で貼り付けることで、パネル101が提供される。このような後貼りを行うので、実施の形態では表皮材108の素材に限定はない。後貼りは通気性が不要なので、使用可能な表皮材108のバリエーションが富む利点がある。例えば表皮材108は不織布でなくともよく、通気性のない例えば合成皮革等の表皮材でもよい。
以上説明した実施の形態には様々な変形が適用されうる。例えばパネル101から表皮材108が省略されてもよい。
1:樹脂製パネル、2:樹脂成形体、3:コア材、3a:基体、3a1:凹部、3b:基体、3b1:凹部、3c:補強部材、3c1:上壁、3c11:突起、3c2:下壁、3c21:突起、3c3:柱部、4:表皮材、5:成形体、5a:成形体本体、5b:大バリ部、5bb:下バリ部、5bc1:内側バリ部、5bc2:外側バリ部、5bu:上バリ部、5c:切断ライン、5cb:下ライン、5cl:左ライン、5cr:右ライン、5cu:上ライン、5d:成形品、5e:小バリ部、5f:パーティングライン、5fb:下ライン、5fl:左ライン、5fr:右ライン、5fu:上ライン、9a:ベース、9b:吸着パッド、10:成形機、11:原料樹脂、11a:溶融樹脂、12:ホッパー、13:押出機、13a:シリンダ、14:シート形成装置、15:連結管、16:連結管、17:アキュームレータ、17a:シリンダ、17b:ピストン、18:Tダイ、19:挿入装置、19a:ベース、19b:吸着パッド、19c:メス型突起、21:第1分割金型、21A:吸引部、21B:吸引穴、21C:傾斜面、21a1:本体部、21a2:第1外側部、21a3:端面部、21b:内面、21d:ピンチオフ部、21d1:内側ピンチオフ部、21d2:外側ピンチオフ部、21dd:ピンチオフ部、21e:オス型突起、21f:支持部、22:第2分割金型、22a:後端部、22a1:本体部、22a2:第2外側部、22a3:対向部、22a4:面取り部、22ab:後端部、22af:前端部、22b:内面、22d:ピンチオフ部、22d1:内側ピンチオフ部、22d2:外側ピンチオフ部、22dd:ピンチオフ部、23:可動部、23a:対向面部、23b:突き当て面部、23c:吸引部、23d:係合部、23e:シール部材、23f:被支持部、23g:吸引部、23g1:吸引穴、23g2:傾斜面、24:駆動機構、24a:上駆動機構、24b:下駆動機構、31:外枠、31a:吸引穴、32:外枠、32a:吸引穴、A:領域、Ar:矢印、B:領域、C1:矢印、C2:矢印、Dr:厚み方向、PL:パーティングライン、SD1:密閉空間、SD2:密閉空間、cvt:キャビティ部、hl:減圧吸引穴、p1:樹脂シート、p2:樹脂シート、sp:空間、w1:横幅寸法、w2:深さ寸法、t1:距離、t2:突出量、w3:後退距離
101:パネル、102:樹脂パネル体、102a:第1本体部、102b:第2本体部、103:表壁、104:裏壁、104a:傾斜部、105:ヒンジ部、105h:ヒンジ片、105h1:中間ヒンジ片、105h2:端部ヒンジ片、105s:スリット、107:中空部、108:表皮材、10:成形機、11:原料樹脂、12:ホッパー、13:押出機、13a:シリンダ、17:アキュームレータ、17a:シリンダ、17b:ピストン、18:Tダイ、14:シート形成装置、121:金型、121a:キャビティ面、121b:ピンチオフ部、123:樹脂シート、15:連結管、16:連結管、131:金型、131a:キャビティ面、131b:ピンチオフ部、133:樹脂シート、135:凸条、L0:ヒンジ部の全長、LS:スリット合計長、LS1,LS2:スリット長、Lh:ヒンジ片の長さ、WS:スリット幅。
Claims (30)
- 構造体の製造方法であって、
成形工程と、バリ部賦形工程と、切断工程とを備え、
前記成形工程では、金型を用いて成形体を成形し、
前記金型は、対をなす第1及び第2分割金型と、可動部とを有し、
第1及び第2分割金型のそれぞれは、キャビティ部と、ピンチオフ部とを有し、
前記可動部は、第1及び第2分割金型に対して相対移動可能に付設され、且つ、前記可動部は、吸引部と係合部とを有し、
前記成形体は、成形体本体と、切断ラインと、バリ部とを有し、
前記成形体本体は、前記成形工程において前記キャビティ部内で成形され、
前記切断ラインは、前記成形工程において前記ピンチオフ部に押し潰され、
前記バリ部は、前記切断ラインを介して前記成形体本体に連結され、且つ、前記可動部に設けられ、
前記バリ部賦形工程では、前記吸引部を介して前記バリ部を前記係合部に吸引することで、前記バリ部を前記係合部に賦形させ、
前記切断工程では、前記バリ部を前記係合部に賦形させた状態で前記可動部を第1及び第2分割金型に対して相対移動させることによって、前記切断ラインに沿うように前記バリ部を前記成形体本体から切断する、方法。 - 請求項1に記載の方法であって、
第1分割金型は、端面部を有し、
前記可動部は、突き当て面部を有し、
前記バリ部賦形工程では、前記突き当て面部が、前記端面部に突き当てられる、方法。 - 請求項2に記載の方法であって、
前記金型は、シール部材を更に有し、
前記シール部材は、前記端面部又は前記突き当て面部に取り付けられている、方法。 - 請求項2又は請求項3に記載の方法であって、
第1分割金型は、第1外側部を有し、
第1外側部には、第1分割金型の前記ピンチオフ部が形成され、且つ、第1外側部には、前記端面部が形成され、
第2分割金型は、第2外側部を有し、
第2外側部には、第2分割金型の前記ピンチオフ部が形成され、且つ、第2外側部は、第1及び第2分割金型の開閉方向において、第1外側部に対向するように配置されている、方法。 - 請求項1~請求項4の何れか1つに記載の方法であって、
前記成形体は、樹脂シートと、表皮材と有し、
前記表皮材は、前記樹脂シートの外側に配置されている、方法。 - 請求項5に記載の方法であって、
第1及び第2分割金型のそれぞれには、減圧吸引穴が形成され、
前記減圧吸引穴は、前記キャビティ部に形成されており、且つ、前記減圧吸引穴は、前記樹脂シートを第1及び第2分割金型に賦形するように形成され、
前記樹脂シートが第1及び第2分割金型に賦形された状態において、前記キャビティ部に配置された前記表皮材は、第1分割金型に沿うように設けられ、
前記減圧吸引穴は、第1分割金型の第1外側部には形成されていない、方法。 - 請求項6に記載の方法であって、
第1外側部と第2外側部との間には、表皮材逃し空間が形成されており、
前記成形工程において、前記表皮材逃し空間には、前記表皮材の端部が配置されている、方法。 - 構造体の製造方法であって、
成形工程と、係合工程と、切断工程とを備え、
前記成形工程では、金型を用いて成形体を成形し、
前記金型は、対をなす第1及び第2分割金型と、可動部とを有し、
第1及び第2分割金型のそれぞれは、キャビティ部と、内側ピンチオフ部と、外側ピンチオフ部とを有し、
前記内側ピンチオフ部は、前記キャビティ部に接続され、
前記外側ピンチオフ部は、前記キャビティ部に対して前記内側ピンチオフ部よりも離れた位置に設けられ、
前記可動部は、第1及び第2分割金型に対して相対移動可能に付設され、且つ、前記可動部は、係合部を有し、
前記成形体は、成形体本体と、外側ライン部と、外側バリ部とを有し、
前記成形体本体は、内側ライン部と、内側バリ部とを有し、
前記成形体本体は、前記成形工程において前記キャビティ部内で成形され、
前記内側ライン部は、前記成形工程において前記内側ピンチオフ部に押し潰され、
前記内側バリ部は、前記内側ライン部と前記外側ライン部との間に形成され、
前記外側ライン部は、前記成形工程において前記外側ピンチオフ部に押し潰され、
前記外側バリ部は、前記外側ライン部に連結され、
前記係合工程では、前記外側バリ部を前記可動部の前記係合部に係合させ、
前記切断工程では、前記外側バリ部を前記係合部に係合させた状態で前記可動部を第1及び第2分割金型に対して相対移動させることによって、前記外側ライン部に沿うように前記外側バリ部を前記内側バリ部から切断する、方法。 - 請求項8に記載の方法であって、
第1分割金型及び前記可動部を平面視したときにおいて、前記外側ピンチオフ部が、前記係合部に沿うように形成されている、方法。 - 請求項8に記載の方法であって、
前記外側ピンチオフ部の頂部の面が、前記係合部の頂部の面に一致している、方法。 - 請求項8~請求項10の何れか1つに記載の方法であって、
前記可動部は、吸引部を更に有し、
前記係合工程では、前記吸引部を介して前記外側バリ部を前記係合部に吸引し、前記外側バリ部を前記係合部に賦形させることで、前記外側バリ部を前記係合部に係合させている、方法。 - 請求項11に記載の方法であって、
第1分割金型は、端面部を有し、
前記可動部は、突き当て面部を有し、
前記係合工程では、前記突き当て面部が前記端面部に突き当てられた状態で、前記吸引部を介して前記外側バリ部を前記係合部に吸引する、方法。 - 請求項12に記載の方法であって、
前記金型は、シール部材を更に有し、
前記シール部材は、前記端面部又は前記突き当て面部に取り付けられている、方法。 - 請求項12又は請求項13に記載の方法であって、
第1分割金型は、第1外側部を有し、
第1外側部には、第1分割金型の前記内側ピンチオフ部及び前記外側ピンチオフ部が形成され、且つ、第1外側部には、前記端面部が形成され、
第2分割金型は、第2外側部を有し、
第2外側部には、第2分割金型の前記内側ピンチオフ部及び前記外側ピンチオフ部が形成され、且つ、第2外側部は、第1及び第2分割金型の開閉方向において、第1外側部に対向するように配置されている、方法。 - 請求項8~請求項14の何れか1つに記載の方法であって、
前記成形体は、樹脂シートと、表皮材と有し、
前記表皮材は、前記樹脂シートの外側に配置されている、方法。 - 請求項15に記載の方法であって、
第1及び第2分割金型のそれぞれには、減圧吸引穴が形成され、
前記減圧吸引穴は、前記キャビティ部に形成されており、且つ、前記減圧吸引穴は、前記樹脂シートを第1及び第2分割金型に賦形するように形成され、
前記樹脂シートが第1及び第2分割金型に賦形された状態において、前記キャビティ部に配置された前記表皮材は、第1分割金型に沿うように設けられ、
前記減圧吸引穴は、第1分割金型の第1外側部には形成されていない、方法。 - 請求項16に記載の方法であって、
第1外側部と第2外側部との間には、表皮材逃し空間が形成されており、
前記成形工程において、前記表皮材逃し空間には、前記表皮材の端部が配置されている、方法。 - 金型及び外枠を用いた構造体の製造方法であって、
垂下工程と、吸着工程と、賦形工程と、を備え、
前記垂下工程では、溶融した樹脂シートを前記金型の正面に垂下し、
前記金型は、キャビティ部と、ピンチオフ部と、面取り部とを有し、
前記面取り部は、前記外枠と前記ピンチオフ部との間に設けられ、且つ、前記ピンチオフ部から前記外枠に向かう方向において、垂下された前記樹脂シートとの間隔が広がるように形成され、
前記吸着工程では、前記外枠を前進させて前記外枠で前記樹脂シートを吸着し、前記外枠と前記樹脂シートと前記金型との間に閉空間を形成し、
前記外枠は、前記金型の周囲に配置され、且つ、前記樹脂シートを吸着可能に構成され、
前記賦形工程では、前記外枠を後退させ、且つ、前記閉空間を減圧して前記キャビティ部に前記樹脂シートを賦形し、
前記樹脂シートは、前記外枠が後退することで前記外枠と共に移動し、前記面取り部に沿うように配置される、方法。 - 請求項18に記載の方法であって、
前記面取り部は、テーパー面で構成されている、方法。 - 請求項19に記載の方法であって、
前記テーパー面の傾斜角は、60度以下である、方法。 - 請求項18~請求項20の何れか1つに記載の方法であって、
前記賦形工程において、前記外枠は、前記面取り部の後端部の位置まで後退する、方法。 - 請求項18~請求項21の何れか1つに記載の方法であって、
前記賦形工程において、前記外枠の後退距離は、30mm以上、80mm以下である、方法。 - 請求項18~請求項22の何れか1つに記載の方法であって、
前記製造方法では、可動部を更に用い、且つ、前記製造方法は、成形工程を更に備え、
前記金型は、第1及び第2分割金型を有し、
前記可動部は、第1分割金型に対して相対移動し、前記樹脂シートの一部を切断するように構成され、且つ、第1分割金型の周囲に付設され、
第2分割金型は、前記面取り部を有し、前記外枠は、第2分割金型の周囲に配置され、
前記成形工程では、第1及び第2分割金型を型閉じし、前記成形工程が完了した状態では、前記可動部の少なくとも一部が、前記面取り部の前端部の位置よりも、前記外枠寄りに配置されている、方法。 - 請求項18~請求項23の何れか1つに記載の方法であって、
前記面取り部は、前記金型の開閉方向の幅が、10mm以上、63mm以下である、方法。 - 請求項18~請求項24の何れか1つに記載の方法であって、
前記面取り部は、前記ピンチオフ部から前記外枠に向かう方向の幅が、5.7mm以上、70mm以下である、方法。 - 樹脂パネル体を備えるパネルであって、
前記樹脂パネル体は、一体に設けられた第1本体部と第2本体部とヒンジ部とを備え、
前記ヒンジ部は、ヒンジ片とスリットとを持ち、
前記ヒンジ片は、前記第1本体部と前記第2本体部とを回動可能に連結し、
前記スリットは、前記ヒンジ片の隣に設けられて前記第1本体部と前記第2本体部とを分離する、パネル。 - 請求項26に記載のパネルであって、
表皮材を備え、
前記表皮材は、前記ヒンジ部をまたいで前記第1本体部および前記第2本体部に貼り付けられる、パネル。 - 請求項26又は請求項27に記載のパネルであって、
前記ヒンジ部の両端にわたる長さが全長L0であり、前記スリットの長さの合計がスリット合計長LSであるとしたときに、LS/L0が0.50~0.99である、パネル。 - 請求項26~請求項28のいずれか1つに記載のパネルであって、
前記ヒンジ片は、端部ヒンジ片を含み、
前記端部ヒンジ片は前記ヒンジ部の両端それぞれに設けられた、パネル。 - 請求項29に記載のパネルであって、
前記ヒンジ片は、中間ヒンジ片を含み、
前記中間ヒンジ片は前記端部ヒンジ片の間に設けられた、パネル。
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KR1020237026075A KR20230150264A (ko) | 2021-02-26 | 2022-02-18 | 구조체의 제조 방법 및 패널 |
EP22759523.8A EP4299282A4 (en) | 2021-02-26 | 2022-02-18 | METHOD FOR PRODUCING A STRUCTURAL BODY AND PLATE |
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JP2021138343A JP2023032301A (ja) | 2021-08-26 | 2021-08-26 | パネル |
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JP2016083859A (ja) * | 2014-10-27 | 2016-05-19 | キョーラク株式会社 | ブロー成形方法及びブロー成形装置 |
JP2018122462A (ja) | 2017-01-31 | 2018-08-09 | キョーラク株式会社 | 金型装置、及び成形体の製造方法 |
JP2019051649A (ja) | 2017-09-15 | 2019-04-04 | キョーラク株式会社 | 構造体及びその製造方法 |
JP2020019190A (ja) * | 2018-07-31 | 2020-02-06 | キョーラク株式会社 | 保持装置 |
WO2020026928A1 (ja) | 2018-07-31 | 2020-02-06 | キョーラク株式会社 | 構造体の製造方法、保持装置 |
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JP2018122462A (ja) | 2017-01-31 | 2018-08-09 | キョーラク株式会社 | 金型装置、及び成形体の製造方法 |
JP2019051649A (ja) | 2017-09-15 | 2019-04-04 | キョーラク株式会社 | 構造体及びその製造方法 |
JP2020019190A (ja) * | 2018-07-31 | 2020-02-06 | キョーラク株式会社 | 保持装置 |
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