WO2013099828A1 - 中空部を有する熱可塑性樹脂成形体およびその製造方法 - Google Patents
中空部を有する熱可塑性樹脂成形体およびその製造方法 Download PDFInfo
- Publication number
- WO2013099828A1 WO2013099828A1 PCT/JP2012/083383 JP2012083383W WO2013099828A1 WO 2013099828 A1 WO2013099828 A1 WO 2013099828A1 JP 2012083383 W JP2012083383 W JP 2012083383W WO 2013099828 A1 WO2013099828 A1 WO 2013099828A1
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- WIPO (PCT)
- Prior art keywords
- thermoplastic resin
- mold
- molded body
- producing
- molded article
- Prior art date
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- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 13
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- 238000003825 pressing Methods 0.000 claims description 6
- 239000002759 woven fabric Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229930182556 Polyacetal Natural products 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
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- 239000004917 carbon fiber Substances 0.000 claims description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920006122 polyamide resin Polymers 0.000 claims description 2
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- 238000007731 hot pressing Methods 0.000 claims 1
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- 238000001179 sorption measurement Methods 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 3
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- 239000000088 plastic resin Substances 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
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- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2081/00—Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
- B29K2081/04—Polysulfides, e.g. PPS, i.e. polyphenylene sulfide or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/10—Cords, strands or rovings, e.g. oriented cords, strands or rovings
- B29K2105/101—Oriented
- B29K2105/105—Oriented uni directionally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Definitions
- the present invention relates to a thermoplastic resin molded body having a hollow portion and a method for producing the same, and in particular, a thermoplastic resin molded body having a hollow portion, which is suitable for a large-sized molded body having a thin-walled large area and a partial hollow structure portion. And a manufacturing method thereof.
- the structure of the molded body to be finally molded is divided, and each divided part is first molded and molded.
- a molded body having a predetermined structure has been manufactured by bonding or welding the parts.
- the compact becomes larger, it takes a lot of time in the case of bonding, and in the case of welding, the welding machine becomes an unrealistic scale.
- the object of the present invention is to satisfy the above-mentioned demands even when a thin-walled and large-area resin molded body structure is required and a hollow structure is partially formed. It is an object of the present invention to provide a technology capable of easily and efficiently producing a thermoplastic resin molded body having a structure to achieve this.
- a method for producing a thermoplastic resin molded article having a hollow portion is a method in which a molded article A made of a thermoplastic resin molded in advance is set in a first mold and melted.
- the resin plate B is shaped to a shape along the inner surface of the second mold by adsorbing the resin plate B to the inner surface of the second mold facing the first mold with a vacuum pressure, and the first mold and the second mold.
- the mold is clamped to weld the thermoplastic resin plate B and the molded body A only in a predetermined area, and at least a part of the non-welded area is formed as a hollow part. Consists of.
- the molding die is composed of an upper die and a lower die, if either the upper die or the lower die is used as the first die and the other die is used as the second die, Good.
- thermoplastic resin molded body having a hollow portion In such a method for producing a thermoplastic resin molded body having a hollow portion according to the present invention, a molded body A made of a thermoplastic resin is previously molded into a predetermined shape and set in a first mold, and the molded body A The thermoplastic resin plate B is welded to the surface.
- the thermoplastic resin plate B is adsorbed on the inner surface of the second mold by a vacuum pressure in a molten state, shaped into a shape along the inner surface of the second mold by the adsorption, and has a thin and large area heat. Even the plastic resin plate B is firmly and satisfactorily held in close contact with the inner surface of the second mold.
- the first mold and the second mold are clamped, so that the thermoplastic resin plate B and the molded body A are welded only in a predetermined region and are not welded. At least a part of the welding region is formed as a hollow portion.
- the portion of the molded body A set on the first mold is adsorbed on the inner surface of the second mold and shaped into a shape along the inner surface of the second mold.
- the portion of the thermoplastic resin plate B firmly held on the inner surface is positioned with a gap, and both portions are formed in the hollow portion.
- the plate B is accurately positioned at a time by clamping, so when the hollow part to be formed has a large area, when it has a long dimension, when it has a complicated planar shape, it is in a different place from each other. Even in the case where a plurality of layers are formed, the desired hollow portion can be formed accurately, easily, and efficiently in a very short time.
- the molded body A is preliminarily molded by stamping molding or the like, it can be easily and accurately molded into a predetermined thin shape, and the thermoplastic resin plate B is melted in a vacuum state with the second mold. Since it is adsorbed on the inner surface and shaped into a shape along the inner surface of the second mold by the adsorption, it is easily formed into a thin wall shape, and the thin wall shape is accurately maintained until the mold clamping is completed. . Since the thermoplastic resin plate B, which is accurately maintained in a predetermined thin shape, is welded to the molded body A by clamping, the formed hollow portion is also easily formed into a predetermined shape, and the target form is highly accurate. The realized thermoplastic resin molding can be manufactured efficiently and easily in a short time.
- thermoplastic resin molded body can also be applied to the case where both the molded body A and the thermoplastic resin plate B are made only of a resin.
- the molded body A and the thermoplastic resin plate B Of these, it is a suitable method when at least the thermoplastic resin plate B is made of a fiber-reinforced thermoplastic resin.
- both the molded object A and the thermoplastic resin board B consist of a fiber reinforced thermoplastic resin.
- thermoplastic resin plate B When at least the thermoplastic resin plate B is made of a fiber reinforced thermoplastic resin, when the thermoplastic resin plate B is adsorbed to the inner surface of the second mold by a vacuum pressure in a molten state, the thermoplastic resin plate B melts due to the presence of the reinforcing fibers. The deformation and flow down of the resin having a low viscosity is prevented or suppressed, and even the thin-walled large-area thermoplastic resin plate B is more easily clamped while being held in a predetermined adsorption form. As a result, the molding of the thermoplastic resin molded body having a predetermined hollow portion is further facilitated. That is, a fiber-reinforced thermoplastic resin molded body having a hollow portion is easily produced.
- the reinforcing fiber of the fiber-reinforced thermoplastic resin is not particularly limited.
- at least one type of reinforcement selected from carbon fiber, glass fiber, and aramid fiber Fiber can be used.
- a hybrid configuration in which two or more kinds of reinforcing fibers including these reinforcing fibers or other reinforcing fibers are used is also possible.
- the form of the reinforcing fiber of the fiber reinforced thermoplastic resin for example, a discontinuous fiber can be adopted.
- discontinuous fibers are used as the reinforcing fibers, the dispersion of the reinforcing fibers in the thermoplastic resin plate B in the molten state can be easily maintained in a uniform state, and at the same time along the inner surface of the second mold by adsorption. As a result, it is possible to improve the uniformity of mechanical properties and the surface quality of the final molded body.
- the weight average fiber length of the discontinuous fibers is preferably 10 mm or more. If it is less than 10 mm, there is a possibility that the effect of improving the mechanical properties of the molded article, which is the original purpose of the reinforcing fiber, is insufficient.
- the content of the discontinuous fibers in the fiber reinforced thermoplastic resin is preferably in the range of 5 to 50% by weight. If the content is less than this range, the effect of improving the mechanical properties of the molded product may be too small, and if it exceeds this range, high-precision adsorption to the inner surface of the upper mold may be difficult.
- continuous fibers can also be used as the reinforcing fibers of the fiber-reinforced thermoplastic resin.
- the combination form of the above discontinuous fibers and continuous fibers can also be employed.
- the reinforcing fibers themselves can have desired anisotropy (for example, predetermined mechanical properties in a specific direction) and form retention.
- the fiber reinforced resin molding using the reinforced fiber composed of continuous fibers can exhibit high mechanical properties in the orientation direction of the continuous fibers, it is possible to improve the mechanical properties of the molded product after molding.
- the continuous fiber for example, a form made of continuous fibers in which reinforcing fibers are aligned in one direction can be adopted.
- reinforced fibers consisting of continuous fibers are aligned in one direction, which makes it possible to specifically improve the mechanical properties in that direction, enabling a more optimal design according to the application of the molded body.
- the content of the continuous fiber in the fiber reinforced thermoplastic resin is preferably in the range of 1 to 80% by weight. If the content is less than this range, the effect of improving the mechanical properties of the molded product may be too small, and the content exceeding this range is realistic even when the reinforcing fiber is composed of continuous fibers. Since the amount of resin becomes too small, it is difficult to realize.
- a woven fabric as the reinforcing fiber of the fiber reinforced thermoplastic resin.
- the form of the woven fabric there can be used a unidirectional woven fabric in which continuous fibers arranged in one direction as described above are woven with auxiliary yarns, or a woven fabric using continuous reinforcing fibers as warp yarns and weft yarns.
- the reinforcing fibers themselves can be provided with a form-retaining property, so that the reinforcing fiber forms in the fiber-reinforced thermoplastic resin can be more easily maintained at the target form.
- thermoplastic resin plate B includes reinforcing fibers made of continuous fibers as described above, for example, as the thermoplastic resin plate B, reinforcing fibers and thermoplastic resin aligned in one direction are preliminarily hot pressed.
- the form which consists of a tape-like fiber reinforced thermoplastic resin integrated by this can be employ
- the handleability is improved, and the mechanical properties in a specific direction are efficiently enhanced by including the reinforced fibers aligned in one direction. It becomes possible, and it becomes possible to perform the optimal design according to the use of a molded object more easily.
- the tape width is 6 in consideration of handling property, retention property when adsorbed to the inner surface of the second mold, and formability. It is preferably in the range of ⁇ 50 mm.
- thermoplastic resin plate B can be more easily and more reliably attached to the inner surface of the second mold, even if the thermoplastic resin plate B is thin and large. It becomes possible to adsorb, and mold clamping and, as a result, overall molding is facilitated.
- a mold having suction fine holes for holding the molded body A can be used as the first mold.
- Such a configuration is particularly effective when the upper mold of the upper and lower molds is used as the first mold and the molded body A is held on the lower surface side of the upper mold.
- thermoplastic resin plate B when the thermoplastic resin plate B is shaped along the inner surface of the second mold and the thermoplastic resin plate B and the molded body A are welded, the second of the thermoplastic resin plate B is used.
- a thermoplastic resin film can be formed by laminating a thermoplastic resin film on the non-contact surface to the mold. In this way, in particular, when the thermoplastic resin plate B is adsorbed to the inner surface of the second mold through suction from the fine holes as described above, a part of the thermoplastic resin plate B becomes porous. Since the suction air may pass through and there is a possibility that the suction of the portion may be insufficient, such a problem can be easily prevented.
- the resin constituting the molded product A and the thermoplastic resin plate B is not particularly limited, but preferred thermoplastic resins include polyphenylene sulfide resin, polyamide resin, polyolefin resin, polyester resin, ABS. Examples include at least one of resin, polycarbonate resin, and polyacetal resin.
- thermoplastic resin plate B can be shaped while pressing the outer peripheral portion of the thermoplastic resin plate B. In this way, it is possible to efficiently prevent an undesirable displacement in the thermoplastic resin plate B during shaping, and to perform the desired shaping at a relatively desirable position with respect to the second mold. it can.
- a heating means is installed at a portion corresponding to at least a part of the welding region of the second type (for example, a heater is embedded), and heating by the heating means is used.
- a heating means in both a 1st type
- a heating means is provided over the shaping area
- the present invention also provides a thermoplastic resin molded article having a hollow part, having a surface area of the upper surface of 1 m 2 or more, produced by the method as described above. That is, the method according to the present invention is particularly suitable for the production of a thin-walled large-area thermoplastic resin molded body, and particularly a large-sized molding having a surface area of 1 m 2 or more on the upper surface formed of the thermoplastic resin plate B.
- the present invention also provides such a large thermoplastic resin molded body having a hollow portion. Examples of such a large thermoplastic resin molded body having a hollow portion include a monocoque body of a vehicle, particularly an automobile, a large bonnet, and panels of various large structures.
- thermoplastic resin molded body having a hollow portion and a method for producing the same According to the thermoplastic resin molded body having a hollow portion and a method for producing the same according to the present invention, a large-sized thermoplastic resin molded body having a thin large area and a part of a hollow structure portion can be easily and efficiently produced in a short time. It can be manufactured with good accuracy.
- thermoplastic resin plate B can be easily manufactured in a large-sized thermoplastic resin molded body having a thin and large area made of fiber-reinforced thermoplastic resin and partially having a hollow structure.
- thermoplastic resin fabrication object It is a process flow figure showing a manufacturing method of a thermoplastic resin fabrication object concerning one embodiment of the present invention. It is a process flow figure showing a manufacturing method of a thermoplastic resin fabrication object concerning another embodiment of the present invention. It is a process flowchart which shows the manufacturing method of the thermoplastic resin molding which concerns on another embodiment of this invention. It is a process flowchart which shows the manufacturing method of the thermoplastic resin molding which concerns on another embodiment of this invention. It is a process flowchart which shows the manufacturing method of the thermoplastic resin molding which concerns on another embodiment of this invention. It is a process flowchart which shows the manufacturing method of the thermoplastic resin molding which concerns on another embodiment of this invention.
- thermoplastic resin molding which concerns on another embodiment of this invention. It is a process flowchart which shows the manufacturing method of the thermoplastic resin molding which concerns on another embodiment of this invention. It is a schematic block diagram which shows the example of the holding method of the molded object A in this invention. It is a process flowchart which shows the manufacturing method of the thermoplastic resin molding which concerns on another embodiment of this invention. It is a longitudinal cross-sectional view of the metal mold
- FIG. 1 shows each process of a manufacturing method of a thermoplastic resin fabrication object concerning one embodiment of the present invention.
- the process (A) shown in FIG. 1 shows a molding example of a molded body A (1) made of a preformed thermoplastic resin or fiber reinforced thermoplastic resin.
- the molded body A (1) is molded in advance by press molding using the lower mold 2 and the upper mold 3 for preforming.
- the preformed molded body A (1) is set on the lower mold 11 as the first mold in the method for producing a thermoplastic resin molded body having a hollow portion according to the present invention in the step (B). .
- the lower mold 11 can also be used as the lower mold 2 for preforming.
- a mold having a plurality of micro holes 13 for sucking air from the cavity is used for the upper mold 12 as the second mold used for molding the thermoplastic resin molded body having the hollow portion.
- thermoplastic resin plate B By the suction path 14 communicating with the hole 13 and suction through each fine hole 13, the molten thermoplastic resin plate B (15) is adsorbed to the inner surface of the upper mold 12 by a vacuum pressure (step (C)), The thermoplastic resin plate B (15) melted by adsorption is shaped into a shape along the inner surface of the upper mold 12.
- This thermoplastic resin board B (15) may be comprised only from a thermoplastic resin, and may be comprised from the fiber reinforced thermoplastic resin containing a reinforced fiber.
- thermoplastic resin plate B While adsorbing and shaping the thermoplastic resin plate B (15), or after completion of the adsorption and shaping of the thermoplastic resin plate B (15), the adsorbed state is maintained and the lower mold 11 is maintained.
- the upper mold 12 is clamped (step (D)).
- the thermoplastic resin plate B (15) in a molten state and the molded body A (1) in a molded and solidified state are brought into contact pressure only in a predetermined region (only in a region to be joined). While being welded, at least a part of the non-welded region is formed as the hollow portion 16. Thereafter, the thermoplastic resin plate B (15) in a molten state is cooled and solidified, whereby the molding of the thermoplastic resin molded body 17 having the hollow portion 16 is completed.
- thermoplastic resin molded body having such a hollow portion In the method for producing a thermoplastic resin molded body having such a hollow portion, the molten thermoplastic resin plate B (15) is adsorbed on the inner surface of the upper mold 12 by vacuum pressure, and the inner surface of the upper mold 12 is obtained by the adsorption. Therefore, the target hollow part can be easily formed. Even with a thin large area, a thermoplastic resin molded body having a desired hollow portion can be easily and efficiently produced in a short time.
- the method for producing a thermoplastic resin molded body having a hollow portion according to the present invention may take various forms as shown in FIGS. 2 to 8 in addition to the form shown in FIG.
- a plurality of hollow parts in particular, a thermoplastic resin molded body 22 having a hollow part 21 at the center part is formed in advance.
- a concave portion 24 is formed at the center of the molded body A (23), and the molded body A (23) is set on the lower mold 25 (step (A)), as shown in FIG.
- thermoplastic resin plate B is adsorbed on the inner surface of the upper die 12 by vacuum pressure and shaped into a shape along the inner surface of the upper die 12 (step (B)), and the thermoplastic resin plate B ( 15) is welded only to a predetermined region to the molded body A (23) by clamping (step (C)).
- a thermoplastic resin molded body 22 having a hollow portion 21 in addition to the hollow portion 16 can be manufactured.
- thermoplastic resin molded body 32 having a hollow portion 31 at the center is manufactured as in the embodiment shown in FIG. 2.
- the molded body A (1) molded in advance is the same as that shown in FIG. 1, and the molded body A (1) is set on the lower mold 11 (step (A)).
- the molten thermoplastic resin plate B (35) is adsorbed to the inner surface of the upper die 34 by vacuum pressure and shaped into a shape along the inner surface of the upper die 34.
- thermoplastic resin plate B (35) is welded only to a predetermined region to the molded body A (1) by clamping (step (C)).
- this portion is also fine for sucking air from inside the cavity.
- the holes 36 are appropriately arranged.
- thermoplastic resin molded body having a hollow portion 41 that is formed in the periphery of the molded body and protrudes upward in a convex shape on the upper surface of the molded body. 42 is manufactured.
- the molded body A (1) previously molded is the same as that shown in FIG. 1, and the molded body A (1) is set on the lower mold 11 (step (A )).
- the upper mold 43 is one having a recess 45 in the inner surface portion of the mold corresponding to the fine hole 44, and the molten thermoplastic resin plate B (46) is vacuum-pressed on the upper mold 43.
- thermoplastic resin plate B Adsorbed to the inner surface of the upper mold 43 and shaped into a shape along the inner surface of the upper mold 43 (step (B)), and the thermoplastic resin plate B (46) is welded only to a predetermined region to the molded body A (1) by clamping. (Step (C)).
- thermoplastic resin molded body 42 having a hollow portion 41 that is larger and protrudes in a convex shape on the upper surface side of the molded body.
- thermoplastic resin molded body 52 having a hollow portion 51 having a larger area is manufactured as compared with the form shown in FIG.
- the molded body A (1) previously molded is the same as that shown in FIG. 1, and the molded body A (1) is set on the lower mold 11 (step (A )).
- the upper mold 53 has a concave portion 54 having a larger area than the form shown in FIG. 1, and has a larger number of fine holes 55 than the form shown in FIG.
- thermoplastic resin plate B (56) is adsorbed to the inner surface of the upper mold 53 by vacuum pressure and shaped into a shape along the inner surface of the upper mold 53 (step (B)), and the thermoplastic resin The plate B (56) is welded to the molded body A (1) only in a predetermined region (only the peripheral region in the illustrated example) by clamping (step (C)).
- a thermoplastic resin molded body 52 having a hollow portion 51 with a larger area can be manufactured.
- segmented into the hollow part 61a and the hollow part 61b is manufactured.
- a convex portion 64 is formed on the upper surface of the central portion of the molded body A (63) that is molded in advance, and is molded on the lower mold 66 having the upper surface convex portion 65 having a shape corresponding to the convex portion 64.
- the body A (63) is set (step (A)).
- the upper mold 53 is the same as that shown in FIG.
- thermoplastic resin plate B is adsorbed to the inner surface of the upper mold 53 by a vacuum pressure and is along the inner surface of the upper mold 53. It is shaped into a shape (step (B)), and the thermoplastic resin plate B (56) is welded to the molded body A (63) only by a predetermined region (in the illustrated example, only the peripheral region and the central region). (Step (C)).
- a thermoplastic resin molded body 62 having large-area divided hollow portions 61a and 61b can be manufactured.
- thermoplastic resin molded body 72 in which the hollow part 71 in the central part is formed in a larger area is manufactured as compared with the form shown in FIG.
- a concave portion 74 having a larger area than that shown in FIG. 2 is formed on the upper surface of the central portion of the molded body A (73) molded in advance, and an upper surface concave portion having a shape corresponding to the concave portion 74 is formed.
- the molded product A (73) is set on the lower mold 75 (step (A)).
- the upper mold 53 is the same as that shown in FIG.
- thermoplastic resin plate B having a hollow portion 71 in the central portion and a hollow portion 76 in the peripheral portion can be manufactured.
- thermoplastic resin molded body 84 having a large-area hollow portion 83 formed at the center can be manufactured.
- thermoplastic resin molded body having a hollow portion according to the present invention and the manufacturing method thereof can take various forms, and can also take forms other than the illustrated examples.
- various methods can be appropriately applied as a method for holding the molded body A in the first mold.
- the compact A (92) is sucked and held on the lower surface of the upper die 91 by vacuum suction.
- the suction holes 93 for performing the suction and suctioning from each suction hole 93 through the suction path 94 and the vacuum line 95 by the vacuum pump 96 the molded body A (92) can be reliably held in a predetermined form. Further, as shown in FIG.
- an adhesive tape 97 is attached to an appropriate location on the lower surface of the upper die 91, and the molded product A (92) is securely held in a predetermined form via the adhesive tape 97.
- the upper mold 101 is used as the first mold
- the lower mold 102 is used as the second mold
- the molded body A (103) is sucked and held on the lower surface of the upper mold 101 by vacuum suction.
- the suction passage 105 and the vacuum line 106 are provided through the suction passage 105 and the vacuum line 106 to hold the molded body A (103) in a predetermined form
- the lower mold 102 has a molten thermoplastic.
- a fine hole 108 and a suction path 109 for adsorbing the resin plate B (107) to the surface of the lower mold 102 with a vacuum pressure can be provided (step (A)).
- thermoplastic resin plate B (107) disposed at a predetermined position with respect to the lower mold 102 is provided with a pressing means 110 that presses the outer peripheral portion thereof, and the pressing means 110 moves the outer peripheral portion of the thermoplastic resin plate B (107).
- step (B) the thermoplastic resin plate B (107) is sucked by sucking through the fine holes 108, the suction path 109, and the vacuum line 111, and shaped along the surface of the lower mold 102.
- Step (C) The formed thermoplastic resin plate B (107) was welded to the molded body A (103) only in a predetermined region (only the peripheral region in the illustrated example) by clamping (step (D)), and the hollow portion 112 was formed.
- the thermoplastic resin molded body 113 can be manufactured.
- the molded body A (123) and the thermoplastic resin plate B (124) are fixed by clamping the upper mold 121 as the first mold and the lower mold 122 as the second mold.
- a heater 127 as a heating unit is installed particularly at a portion corresponding to at least a part of the welding region of the lower mold 122, The welding can be performed using heating by the heater 127. Since the heater 127 is also used for melting the thermoplastic resin molded body 126 as described above, the heater 127 may be provided over a wider area, for example, substantially the entire area of the lower mold 122. Similarly, a heater 128 as a heating unit may be installed in a portion corresponding to at least a part of the welding region of the upper mold 121, or in a wider region, for example, substantially the entire region.
- thermoplastic resin molded body having a hollow portion according to the present invention and the method for producing the same are particularly suitable for a large-sized molded body having a thin-walled large area and a part of a hollow structure portion, for example, a monocoque body of an automobile, It is suitable for large bonnets and panels of various large structures.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
なお、図1~図8に示す実施態様では、本発明における第1の型として下型を、第2の型として上型を使用した形態を例示しているが、本発明における第1の型として上型を、第2の型として下型を使用することもできる。図1は、本発明の一実施態様に係る熱可塑性樹脂成形体の製造方法の各工程を示している。図1に示す工程(A)は、予め成形される熱可塑性樹脂あるいは繊維強化熱可塑性樹脂からなる成形体A(1)の成形例を示している。この例では、成形体A(1)が、予備成形用の下型2と上型3を用いたプレス成形によって、予め成形される。
2、11、25、66、75、82 第1の型としての下型
3、12,34、43、53 第2の型としての上型
13、36、44、55,104、108 微細孔
14、105、109 吸引路
15、35、46、56、107、124 熱可塑性樹脂板B
16、21、31、41、51、61a、61b、71、76、83,112,125 中空部
17、22、32、42、52、62、72、84、113、126 熱可塑性樹脂成形体
24,33、45、54、74 凹部
64 凸部
65 上面凸部
91、101、121 第1の型として上型
92 成形体A
93 吸引孔
94 吸引路
95,106、111 真空ライン
96 真空ポンプ
97 粘着テープ
98 アンダーカット部
102、122 第2の型としての下型
110 押さえ手段
127、128 加熱手段としてのヒーター
Claims (19)
- 予め成形した熱可塑性樹脂からなる成形体Aを第1の型にセットし、溶融した熱可塑性樹脂板Bを真空圧で前記第1の型に対向する第2の型の内面に吸着させることにより該第2の型の内面に沿う形状に賦形し、前記第1の型と前記第2の型を型締めすることにより、前記熱可塑性樹脂板Bと前記成形体Aを予め定めた領域のみで溶着するとともに、非溶着領域の少なくとも一部を中空部として形成することを特徴とする、中空部を有する熱可塑性樹脂成形体の製造方法。
- 前記成形体Aおよび熱可塑性樹脂板Bのうち少なくとも熱可塑性樹脂板Bが繊維強化熱可塑性樹脂からなる、請求項1に記載の熱可塑性樹脂成形体の製造方法。
- 前記繊維強化熱可塑性樹脂の強化繊維が炭素繊維、ガラス繊維、アラミド繊維から選ばれる少なくとも1種である、請求項2に記載の熱可塑性樹脂成形体の製造方法。
- 前記繊維強化熱可塑性樹脂の強化繊維が不連続繊維からなる、請求項2または3に記載の熱可塑性樹脂成形体の製造方法。
- 前記不連続繊維の重量平均繊維長が10mm以上である、請求項4に記載の熱可塑性樹脂成形体の製造方法。
- 前記繊維強化熱可塑性樹脂中の前記不連続繊維の含有量が5~50重量%の範囲にある、請求項4または5に記載の熱可塑性樹脂成形体の製造方法。
- 前記繊維強化熱可塑性樹脂の強化繊維が連続繊維からなる、請求項2または3に記載の熱可塑性樹脂成形体の製造方法
- 前記強化繊維が一方向に引き揃えられた連続繊維からなる、請求項7に記載の熱可塑性樹脂成形体の製造方法。
- 前記繊維強化熱可塑性樹脂中の前記連続繊維の含有量が1~80重量%の範囲にある、請求項7または8に記載の熱可塑性樹脂成形体の製造方法。
- 前記繊維強化熱可塑性樹脂の強化繊維が織物からなる、請求項7~9のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 前記熱可塑性樹脂板Bが、一方向に引き揃えられた強化繊維と熱可塑性樹脂が予め熱プレスにより一体化されたテープ状繊維強化熱可塑性樹脂からなる、請求項7~10のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 前記テープ状繊維強化熱可塑性樹脂のテープ幅が6~50mmの範囲にある、請求項11に記載の熱可塑性樹脂成形体の製造方法。
- 前記第2の型として、キャビティ内から空気を吸引するための微細孔を有する金型を使用する、請求項1~12のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 前記第1の型として、前記成形体Aを保持するための吸引微細孔を有する金型を使用する、請求項1~13のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 熱可塑性樹脂板Bの前記第2の型への非接触面に熱可塑性樹脂フイルムを積層して熱可塑性樹脂板Bを賦形する、請求項13または14に記載の熱可塑性樹脂成形体の製造方法。
- 成形体Aおよび熱可塑性樹脂板Bを構成する熱可塑性樹脂がポリフェニレンスルフィド樹脂、ポリアミド樹脂、ポリオレフィン樹脂、ポリエステル樹脂、ABS樹脂、ポリカーボネート樹脂、ポリアセタール樹脂の少なくとも1種以上からなる、請求項1~15のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 熱可塑性樹脂板Bの外周部を押さえながら熱可塑性樹脂板Bを賦形する、請求項1~16のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 少なくとも前記第2の型の前記溶着領域の少なくとも一部に対応する部位に加熱手段を設置し、該加熱手段による加熱を利用して前記溶着を行う、請求項1~17のいずれかに記載の熱可塑性樹脂成形体の製造方法。
- 請求項1~18のいずれかに記載の方法により製造された、1m2以上の上面の表面積を有する、中空部を有する熱可塑性樹脂成形体。
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EP12862555.5A EP2799213A4 (en) | 2011-12-28 | 2012-12-25 | THERMOPLASTIC RESIN MOLDED OBJECT HAVING A HOLLOW PART AND METHOD OF MANUFACTURING THE SAME |
KR1020147014044A KR20140108634A (ko) | 2011-12-28 | 2012-12-25 | 중공부를 갖는 열가소성 수지 성형체 및 그의 제조 방법 |
JP2012558107A JP5991590B2 (ja) | 2011-12-28 | 2012-12-25 | 中空部を有する熱可塑性樹脂成形体の製造方法 |
US14/364,385 US9855700B2 (en) | 2011-12-28 | 2012-12-25 | Thermoplastic resin molded article having hollow portion and method of manufacturing same |
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EP2799213A4 (en) | 2016-01-06 |
US9855700B2 (en) | 2018-01-02 |
JPWO2013099828A1 (ja) | 2015-05-07 |
EP2799213A1 (en) | 2014-11-05 |
CN103946009A (zh) | 2014-07-23 |
KR20140108634A (ko) | 2014-09-12 |
US20150231817A1 (en) | 2015-08-20 |
CN103946009B (zh) | 2016-01-27 |
JP5991590B2 (ja) | 2016-09-14 |
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