WO2003092984A1 - Element interieur resineux d'un corps d'ouverture/fermeture, moule pour cet element et procede de moulage de cet element - Google Patents
Element interieur resineux d'un corps d'ouverture/fermeture, moule pour cet element et procede de moulage de cet element Download PDFInfo
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- WO2003092984A1 WO2003092984A1 PCT/JP2003/005435 JP0305435W WO03092984A1 WO 2003092984 A1 WO2003092984 A1 WO 2003092984A1 JP 0305435 W JP0305435 W JP 0305435W WO 03092984 A1 WO03092984 A1 WO 03092984A1
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- WIPO (PCT)
- Prior art keywords
- resin
- interior member
- opening
- molding
- closing body
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/10—Doors arranged at the vehicle rear
- B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
- B60J5/107—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans constructional details, e.g. about door frame, panels, materials used, reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/0401—Upper door structure
- B60J5/0405—Inboard or outboard side of window frame formed integrally with the lower door structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/0463—Conceptual assembling of door, i.e. how door frame parts should be fitted together to form door
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/048—Doors arranged at the vehicle sides characterised by the material
- B60J5/0481—Doors arranged at the vehicle sides characterised by the material plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/10—Doors arranged at the vehicle rear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3014—Door linings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/083—Copolymers of ethene with aliphatic polyenes, i.e. containing more than one unsaturated bond
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/16—Two dimensionally sectional layer
- Y10T428/161—Two dimensionally sectional layer with frame, casing, or perimeter structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249924—Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31826—Of natural rubber
Definitions
- the present invention relates to a resin interior member attached to the inside of an outer plate of an opening / closing body, and a molding die and a molding method thereof.
- an opening / closing body such as a door, a hood, a trunk lid, a sunroof, and a lift gate (also referred to as a tail gate, a lary gate, or a back door) provided in a vehicle such as an automobile
- a lift gate also referred to as a tail gate, a lary gate, or a back door
- such an opening / closing body is formed by bonding or bonding an inner plate member (inner panel) or an inner frame member (inner frame), or an inner decorative material (inner trim) alone or in addition to the inner plate member (inner panel) or the inner frame member. It is constructed by welding.
- thermosetting luster a thermoplastic resin such as polypropylene resin is used as a base material, and a sheet material containing glass mat is press-formed to manufacture.
- thermoplastic resin such as polypropylene resin
- a sheet material containing glass mat is press-formed to manufacture.
- those based on thermoplastic resin are often used from the viewpoint of placing more emphasis on moldability.
- the conventional method of manufacturing interior components requires bothersome work such as drilling holes and removing burrs after press forming, which requires a lot of man-hours and time and labor. Is also complicated.
- the injection molding method can be generally used by devising the mold design. Post-processing (27 fire processing after forming) can be eliminated.
- the reinforcing fiber such as glass fiber mixed in the resin material is a so-called long fiber having a length of, for example, about 10 mm. Therefore, conventionally, the reinforcing fiber is formed on the surface of a molded product (product). occurs many irregularities based on glass ⁇ was also a drawback that appearance is greatly reduced ⁇
- the outer plate member (outer panel) is required to have good paintability.
- a resin material having good surface properties and a molded article such as a resin material made of PC (polycarbonate) resin and ABS (acrylonitrile 'butadiene' styrene) resin, is used.
- the resin flow that flows along the side edge of the external shape and fills from the direction along the outer peripheral line of the end is different from the resin flow (
- the flow rate ie, the filling speed of the molten resin to be charged
- the resin flow in the direction along the outer peripheral line is generally different from the direction of the resin because the central region includes many irregularities and uneven thicknesses. The flow velocity is higher than the flow.
- the difference is larger than a certain degree, the resin flow from the direction along the outer peripheral line at the end is filled very quickly. Therefore, the fiber orientation of the central region of the interior member and that of the reinforcing member are greatly different. Due to the difference in the orientation of the ⁇ , there is a problem that the end portion of the interior member is warped (deformed) so that a substantially central portion along the outer peripheral line swells from the surface.
- the present invention has been made in view of the above problems, and provides an opening / closing body which has good moldability and appearance of a molded product, has required rigidity and impact resistance, and has less deformation. It is an object of the present invention to provide a resin interior member, and a mold and a molding method thereof. Disclosure of the invention
- a resin interior member of an opening / closing body is a resin interior member attached to the inside of an outer plate of the opening / closing body, wherein the reinforcing fiber and rubber are combined. It is characterized by being molded by an injection molding method using the contained polypropylene resin as a molding material.
- the polypropylene-based resin includes a homopolypropylene resin and a block ⁇ copolymer.
- the block copolymer is a polypropylene resin, and more preferably, the block copolymer is a polypropylene resin. And a propylene resin.
- the modified polypropylene resin is mixed, for example, preferably in an amount of 0.1 to 5% by weight, and more preferably in an amount of 1 to 4% by weight, based on the total amount of the block (1) copolymer “polypropylene resin, rubber and reinforcing fibers”. %.
- the outer plate is made of resin
- the molding material is made of a polypropylene resin containing reinforcing fibers and a resin material containing rubber. It is characterized by the following.
- the third invention of the present application is the above-mentioned first or second invention, wherein the weight ratio of the reinforcing fiber, the polypropylene resin and the rubber of the molding material is 20 to 50: 30-75: 5. It is characterized by being set to ⁇ 20.
- the weight ratio of the reinforcing fibers is set to 20 to 50% is that if the amount is less than 20%, the required flexural modulus cannot be obtained, and if it exceeds 50%, the elasticity is impaired.
- the weight ratio of rubber is set to 5 to 20% because if it is less than 5%, it is difficult to secure required impact resistance, and if it exceeds 20%, it is difficult to secure moldability. It is.
- a bending elastic modulus is equal to or more than a bending elastic modulus of the outer plate made of Jujutsui.
- the fifth invention of the present application is characterized in that, in any one of the above-described first to fourth inventions, the bending “1” production rate is 400 OMPa or more.
- the lower limit of the flexural modulus was set to 400 OMPa, as long as the flexural modulus of the interior member is more than this value, a relatively common synthetic resin material for panel materials of automobiles is used.
- ABS Al-tolyl butadiene styrene
- a resin outer plate is molded using a resin material, and its rigidity is a flexural modulus of 3500-3800MPa. Even if it is not enough for the outer panel of the opening / closing body of an automobile, the rigidity of the opening / closing body can be reliably increased by securing the flexural modulus of the interior member to 4000 MPa or more. This is because rigidity can be obtained.
- a predetermined shape of the rectangle is set. In the vicinity of the end of the interior member in the direction along one side, it extends substantially parallel to one of the other side that intersects the predetermined one side and the outer peripheral line of the interior member that extends in substantially the same direction as the other side.
- a thin plate portion is provided.
- any one of the first to fifth inventions when a rectangle circumscribing the interior member in a front view is set, the rectangle intersects a predetermined side of the rectangle. In the vicinity of the end of the interior member in the direction along the other side, a thick plate extending substantially parallel to any one of the predetermined side and the outer peripheral line of the interior member extending substantially in the same direction as the one side. A part is provided.
- the interior member is provided with an opening for a window.
- a molding die for a resin-made interior member according to the ninth invention of the present application is a molding die for a resin-made interior member attached inside an outer plate of an opening / closing body, and corresponds to a terminal portion of the interior member.
- a thick plate cavity having a gap dimension larger than the gap dimension between the two cavity sections is provided substantially parallel to the terminal cavity section between the terminal cavity section and the gate cavity section provided with the resin material injection gout section.
- a cavity path is formed in which the resin material injected from the gate portion flows from the gate cavity portion to the thick plate cavity portion and then to the terminal cavity portion. is there.
- a method of molding a resin interior member according to the tenth aspect of the present invention is a method of molding a resin interior member attached to the inside of an outer plate of an opening / closing body, wherein the resin interior member is injected into a molding die from a gate portion. After flowing the resin material into the thick plate cavity portion corresponding to the thick plate portion set substantially parallel to the terminal portion in the vicinity of the terminal portion of the interior member, the terminal cavity portion corresponding to the terminal portion is formed. It is characterized by flowing into
- the method for molding a resin interior member according to the eleventh invention of the present application A method of molding a resin interior member attached to an inner side of an outer plate, wherein a resin material injected into a molding die from a gate portion is formed in a molding cavity portion corresponding to an outer peripheral line of the interior member,
- the method is characterized in that the fiber is formed by using a forming die provided with a harmful means for preventing the fibers from being oriented in the same direction as the outer peripheral line.
- the inhibiting means a molding cavity portion corresponding to the thick plate portion in the sixth invention or the thin plate portion in the seventh invention is suitable, and furthermore, a molding cavity corresponding to the rib-boss portion is preferable.
- Various other configurations, such as a cavity portion which can disturb the flow of the molten resin to the molding portion corresponding to the outer peripheral line of the interior member can be effectively applied.
- the reinforcing fiber and the wrapper component By appropriately setting each content of, the flexural modulus is increased by blending the reinforced system to increase the rigidity of the member without impairing the moldability as a material resin and the ⁇ m property of the molded product. While improving, it is possible to ensure impact resistance by blending rubber components. In other words, it is possible to obtain an interior member that has good moldability and molded article strength, and also has the required Oka I and impact resistance.
- the opening / closing body whose outer plate is made of resin can basically achieve the same effects as the first invention, and particularly, the molding material is By using a polypropylene-based resin containing a reinforcing fiber and a resin material containing a rubber, the content of the reinforcing fiber and the rubber component can be set relatively easily and reliably.
- the reinforcing fibers of the above molding materials and polypropylene Since the weight ratio of the base resin to the rubber is set to 20 to 50: 30 to 75: 5 to 20, the weight ratio of the reinforcing fiber is set to 20 to 50%.
- the weight ratio of the base resin to the rubber is set to 20 to 50: 30 to 75: 5 to 20
- the weight ratio of the reinforcing fiber is set to 20 to 50%.
- the fourth invention of the present application basically the same effects as those of the above-described second or third invention can be obtained.
- the flexural modulus of the interior member is equal to or greater than the flexural modulus of the shelf-made outer plate, even if the rigidity of the outer plate is insufficient, the insufficient rigidity is compensated for by the interior member, and the The required rigidity can be secured.
- the flexural modulus is more than 400 OMPa
- PC polycarbonate
- ABS acrylonitrile butadiene styrene
- the resin outer panel is molded using the resin material described above, and its rigidity is about 350 to 380 OMPa in flexural modulus, which is not always sufficient for the outer panel of the opening / closing body of an automobile. Even if it is not the case, it can be captured by the high bending elastic modulus of the interior member, and the rigidity of the opening / closing body can be reliably increased to obtain the required rigidity.
- the sixth invention of the present application basically the same effects as any one of the first to fifth inventions can be obtained.
- the other side intersecting the predetermined side and the other side near the end of the interior member in a direction along a predetermined side of the rectangle are defined. Since the thin plate portion extending substantially in parallel with any one of the outer peripheral lines of the interior member extending substantially in the same direction as the side is provided, the clearance dimension of the molding cavity corresponding to this thin plate portion of the molding die is smaller.
- the molten resin can be less likely to flow in the extending direction of the thin plate portion (that is, in a direction substantially parallel to one of the other side of the square and the outer peripheral line).
- the molding cavity corresponding to the thick plate portion of the molding die becomes a resin pool, and the end of the interior member in the direction along the other side of the above square
- the occurrence of deformation of the interior member can be suppressed extremely effectively.
- the sixth or the fifth embodiment is basically used for an interior member having an opening for a window, such as an interior member for a door or a tailgate of an automobile.
- the sixth or the fifth embodiment is basically used for an interior member having an opening for a window.
- the same effect as the seventh invention can be obtained.
- the thick plate cavity having a large gap provided between the terminal cavity and the gate cavity forms a resin pool
- the resin material injected from the gate is Since the metal flows from the gate cavity into the thick plate cavity (resin pool) and then into the terminal cavity, the terminal cavity can be filled with molten resin from a plurality of directions or the like. It is possible to make the filling speed relatively uniform, and it is possible to suppress a particularly high degree of fiber orientation that is biased in a specific direction along the terminal cavity. as a result, A large warp is formed at the substantially central portion of the interior member in the specific direction.
- the thick plate cavity portion corresponding to the thick plate portion set substantially parallel to the terminal portion becomes a resin reservoir, and the gate portion is formed.
- the resin material injected into the molding die from above flows into the terminal cavity portion after flowing into the thick plate cavity portion (resin pool), so that the terminal cavity portion is filled from a plurality of directions.
- the resin filling amount / filling speed can be made relatively uniform, and it is possible to suppress a particularly high degree of fiber orientation in a specific direction along the terminal cavity portion. As a result, it is possible to suppress the occurrence of large warpage (1) deformation in the substantially central portion of the interior member in this specific direction.
- the fiber-containing resin material injected into the molding die from the gate is a molding cavity corresponding to the outer peripheral line of the interior member, and the fiber is connected to the outer peripheral line. Since the orientation in the same direction is impeded, it is possible to suppress a particularly high degree of fiber orientation in a specific direction along the molding cavity corresponding to the outer peripheral line of the interior member. As a result, it is possible to suppress the occurrence of large warpage and deformation in the substantially central portion of the interior member in this specific direction.
- FIG. 1 is a perspective view of a tail gut attached to a rear portion of a vehicle body according to an embodiment of the present invention.
- FIG. 2 is a perspective view of an inner panel of the tailgate.
- FIG. 3 is a perspective view of a tail gut innapanenole used in the deformation suppression test.
- FIG. 4 is an explanatory cross-sectional view of the above-mentioned Innapanenolle taken along line Y4-Y4 in FIG.
- FIG. 5 is an explanatory cross-sectional view of the above-mentioned inner panel taken along line Y5-Y5 in FIG.
- FIG. 6 is an explanatory cross-sectional view of a portion corresponding to the cross-section of the molded body of FIG. 4 of the above-described mold for forming an inner panel.
- FIG. 7 is an explanatory cross-sectional view of the above mold along the line Y7-Y7 in FIG.
- FIG. 8 is a perspective view of an inner panel schematically showing the flow of the molten resin in Sample 1 of the deformation suppression test.
- FIG. 9 is a perspective view of an inner panel schematically showing a deformed state of Sample 1 described above.
- FIG. 10 is a perspective view of a tail gate schematically showing a state where the inner panel of Sample 1 is assembled to an outer panel.
- FIG. 11 is a perspective view of a tailgate schematically showing a state in which the inner panel of Sample 2 of the deformation suppression test is assembled to an outer panel.
- FIG. 12 is an explanatory front view of the inner panel schematically showing the flow of the molten resin in Sample 3 of the deformation suppression test.
- FIG. 13 is an explanatory front view of the inner panel schematically showing the flow of the molten resin in the first modification of Sample 3 described above.
- FIG. 14 is an explanatory front view of the inner panel schematically showing the flow of the molten resin in the second modification of Sample 3 described above.
- FIG. 15 is an explanatory front view of a thinner panel schematically showing the flow of the molten resin in the third modification of Sample 3 described above.
- FIG. 16 is an explanatory front view schematically showing the flow of the molten resin in another interior member in the deformation suppression test.
- FIG. 17 is an explanatory front view schematically showing the flow of the molten resin in the other modified example of the interior member.
- FIG. 1 is a perspective view showing a state before a window glass of a tailgate attached to a rear portion of a vehicle body of an automobile according to the present embodiment
- FIG. 2 is a perspective view of an inner panel of the tenor regate.
- the tailgate 1 opens the opening formed at the rear of the vehicle body in the vertical direction.
- An openable / closable body that can be closed and attached to the rear of the vehicle body.
- a combination of an inner plate member 2 (inner panel) and an outer plate member 3 (outer panel) of a predetermined shape and size is combined. By joining the peripheral part and its vicinity, a predetermined space is formed between the two parts.
- the inner panel 2 is provided with a number of ribs 2R (only some of them are shown by phantom lines in FIG. 2) for reinforcement. Since the rib portion is thinner and has a more complicated shape than the basic portion of the inner panel 2, it is the most difficult portion of the inner panel 2 to form when performing resin molding. It is one of a minute.
- the rib portion 2R has a thickness of 2 mm and a height of 40 to 5 O mm.
- both the panels 2 and 3 of the above-mentioned inner and iatter are formed using synthetic resin as a material, and the periphery and the vicinity thereof are joined using, for example, a bonding agent. .
- the synthetic resin material of the Autapaneru 3, the linear expansion coefficient (measurement standard: JISK 7 1 9 7) is preferably, 8 X 1 0 _ 5 / ° C or less, in particular 5 X 1 0 one
- a composition of PC (polycarbonate) and ABS (acetyl-tolyl-butadiene-styrene), a composition of polyamide and glass, a composition of polypropylene and glass fiber, etc. can be used.
- the surface properties of the final tailgate, considering coating, etc., a resin material in the PC resin and ABS resins as a raw material (linear expansion coefficient: 4 X 1 0- 5 Z ° C) was used. If the linear expansion coefficient of this ⁇ Utapaneru 3 exceeds 8 X 1 0- 5 / ° C , it is the use environment deformation, there is a Re ⁇ strain increases.
- the difference between the linear expansion coefficients of the resin for the outer panel and the resin for the interior member is (the linear expansion coefficient of the resin for the outer panel minus the f coefficient of expansion of the resin for the interior member).
- - 5 Z ° is a C or less, particularly preferably a (linear expansion coefficient of the linear expansion coefficient one interior member for ⁇ resin for the outer plate) is 0 ⁇ 3 X 1 0- 5 / ° C .
- the resin material of the outer panel 3 (PC / ABS)
- PC / ABS resin material of the outer panel 3
- stiffness is about 3500-3800 MPa in flexural modulus, and is not necessarily sufficient for the tail panel 1 of the automotive vehicle.
- the required rigidity is obtained as the tail gate 1 by giving the inner panel 2 a high rigidity (that is, a higher rigidity than the outer panel 3).
- the material resin for the inner panel 2 As the material resin for the inner panel 2, the current material for the outer panel 3 is used. Various studies and tests were conducted with the basic objective of obtaining a flexural modulus of 400 OMPa or higher, which is higher than the flexural modulus of the resin + 883 resin). It has been confirmed that by setting the flexural modulus of the resin of the inner panel 2 to 4000 MPa or more, the OJI property of Tenoregut 1 can be surely increased. The rigidity required for the gate can be secured extremely stably. In this case, the moldability as a resin material and the raw and impact resistance of the molded product must be at least the same level as the current one.
- the resin material of the inner panel 2 preferably has a coefficient of linear expansion (measurement standard: JI SK 7 197) of 4 ⁇ 10 5 / ° C or less. If the coefficient of linear expansion of the resin material of the inner panel 2 exceeds 4 ⁇ 10-5 Z ° C, as a result, the rigidity of the inner panel 2 may be insufficient, and depending on the use environment, deformation and distortion may increase. is there.
- the secondary processing can be reduced, the moldability as a resin material, the appearance and impact resistance of the molded product are not impaired, and the bending elastic modulus of the molded product is 40%.
- reinforced fibers are combined with a block polypropylene resin based on a relatively common polypropylene resin as a resin material for automotive panel materials, and rubber is added.
- a molding was performed by changing the mixing ratio of the reinforcing fiber and rubber in various ways, and tests were conducted to examine the flexural modulus, moldability, impact resistance, and appearance of the molded product. .
- the above-mentioned resin material will be described in more detail.
- the above-mentioned polypropylene-based resin contains a modified polypropylene resin.
- the modified polypropylene resin is preferably used in an amount of 0.1 to the total of the polypropylene resin, rubber and reinforcing fibers. It can be obtained by blending 1 to 5% by weight, more preferably 1 to 4% by weight.
- Table 1 shows that the injection molding was performed using block PP (polypropylene) resin with various mixing ratios of reinforcing fibers and rubbers, and the flexural modulus, moldability, impact resistance, and flexural modulus of the injection molded product were measured.
- Table 1 shows a list of test results of m properties. In Table 1, values other than the GF content (%) and the EBR amount (%) indicate the flexural modulus (MPa) obtained under each condition.
- glass fibers were used as reinforcing fibers to be added to the block PP resin, and the rubber component was ethylene 'butadiene' rubber (EBR).
- EBR ethylene 'butadiene' rubber
- the matrix resin ⁇ -based resin
- the long fibers of roving glass with a diameter of 13 to 20 ⁇ are mixed at a prescribed weight ratio, and the resin material is extruded to form glass reinforced fibers with a length of 1.5 to 13 mm.
- PP resin pellets containing (GF) were molded at various GF compounding ratios. Specifically, pellets obtained by impregnating a reinforcing fiber with a block polypropylene resin and a modified polypropylene resin were used. When manufacturing pellets for forming an actual product, it is preferable to mix a coloring agent of about several% in order to obtain a better appearance.
- EBR was mixed with a matrix resin (PP resin) at a predetermined weight ratio, and extruded to form rubber-added PP resin pellets of various mixing ratios.
- PP resin matrix resin
- the glass reinforced fiber (GF) content is changed within a range of 15 to 55% by weight.
- the content of the rubber component (EBR) is varied in a range of 0 to 25% by weight, so that the reinforcing fiber (GF), the matrix resin (block PP resin), and the rubber (EBR) are mixed.
- molded articles having different weight blending ratios were obtained.
- a PP resin pellet containing GF and an EBR-added PP resin pellet are put into an injection molding device, and the resin material obtained by kneading and melting in the device is injected into a predetermined mold and tested. A sample was obtained.
- the resin material to be kneaded in the kneader contains rubber (EBR), so that the damage of the glass fiber (GF) is very small. Therefore, it is not necessary to use a special kneading machine, and it is possible to perform good kneading with a general one.
- EBR rubber
- GF glass fiber
- each of the molded product samples obtained as described above were evaluated by visually inspecting the appearance of the surface. That is, the surface of the molded product In the case where many irregularities (floating glass) due to the glass fiber are generated (marked with X in Table 1) and when they are slightly occurring (marked with ⁇ ), both are rejected, and “glass floating” is visually observed. If it was not recognized (marked with ⁇ ), it was judged as passing.
- test pieces were cut out from each molded product sample and subjected to an impact test.
- This impact test is based on whether an iron ball of a specified size and weight is dropped from a specified height onto a test piece (natural fall with zero initial acceleration), and whether the test piece is cracked or not. It was performed as a so-called drop impact test for evaluating impact properties.
- the test piece was a square plate, and its size and thickness were 15 Omm X 15 Omm X 3 mm.
- the content of glass reinforced fiber (GF) is 40% by weight / 0 .
- EBR Echire down ⁇ butadiene rubber
- Table 2 shows the test results. Incidentally, as described above, N o.
- Example 1 the evaluation value of the drop impact test was the highest, and the evaluation value was 95 cm. In other words, in the case of Comparative Example 1, cracking did not occur up to a drop height of the iron ball of up to 95 cm, and at this value, the test sample cracked. It is necessary that the level is at least equivalent to the evaluation value of 95 cm, which is the evaluation value of this conventional product (Comparative Example 1). Failed (marked X).
- the evaluation results of the drop impact test for the examples of the present invention are shown in the column of “Impact resistance” in Table 1.
- the ethylene / butadiene rubber (EBR) content As for the ethylene / butadiene rubber (EBR) content, as this content increases, the drop impact value increases (see Table 2), and the impact resistance improves, but the content is reduced to 25% by weight. If the resin material reaches the limit, the fluidity when the resin material is melt-kneaded and injected becomes low, and the moldability is impaired. Therefore, from the viewpoint of ensuring formability, the upper limit of this EBR amount was set to 20% by weight.
- the lower limit of the EBR amount is 5% by weight or more
- the evaluation value in the drop impact test is 95 cm or more (see Table 2: Test pieces 2 to 6)
- the evaluation value was 20 cm, and the "impact” was rejected (see Table 2: Test piece 1). Therefore, from the viewpoint of ensuring impact resistance, the lower limit of the amount of EBR was set to 5% by weight.
- the secondary load can be reduced, and the moldability as a resin material and the appearance and the impact resistance of the molded product are not impaired, and
- a resin material that can achieve a bending elastic modulus of 400 OMPa or higher for molded products we will strengthen the block polypropylene lumber based on polypropylene (PP) lumber, which has a proven track record as a resin material for automotive panel materials.
- PP polypropylene
- a resin material that contains fiber and contains rubber, and the weight ratio of reinforced fiber, block PP, and rubber is set to 20-50: 30-75: 5-20. It has been found suitable.
- the ethylene ⁇ butadiene as rubber component - but La bar has been used, preferably a thermoplastic elastomer of all, for example, the total amount of 10 weight 0/0 ethylene it is possible to use a material containing butene one 1 copolymer elastomer one (EB R) 2 wt 0/0 of styrene ⁇ ethylene-butylene-styrene copolymer elastomer one (SEBS).
- EB R butene one 1 copolymer elastomer one
- SEBS styrene ⁇ ethylene-butylene-styrene copolymer elastomer one
- thermoplastic elastomers contained in the admixture include ethylene-propylene copolymer elastomer (EPR), ethylene-butene-1 copolymer elastomer (EBR), and ethylene-otaten-1 copolymer elastomer (EOR).
- EPR ethylene-propylene copolymer elastomer
- EBR ethylene-butene-1 copolymer elastomer
- EOR ethylene-otaten-1 copolymer elastomer
- SEBS styrene-copolymer elastomer
- SEPS styrene-ethylene 'Propylene / styren
- carbon 'fiber can be used instead of glass-reinforced fiber.
- the resin material is not limited to the block PP resin based on the PP resin containing the above-mentioned modified polypropylene resin, but may be a homo PP resin, a block PP resin and a random PP resin, or a modified PP resin. Among them, one or a combination of two or more types can be used as the material resin.
- FIG. 3 is a perspective view of the tail panel inner panel 10 used in the deformation suppression test. It is.
- FIGS. 4 and 5 are cross-sectional explanatory views of the inner panel 10 taken along the lines Y4-Y4 and Y5-Y5 in FIG. 3, respectively.
- FIG. 6 shows a mold for forming the above-mentioned inner panel, and is a cross-sectional explanatory view of a mold portion corresponding to the cross section of the formed body of FIG.
- FIG. 7 shows a mold part corresponding to the cross section of the molded body of FIG. 5, and is a cross-sectional explanatory view along the line Y7-Y7 in FIG.
- the inner panel 10 has basically the same shape as the inner panel 2 shown in FIG. 2, and a large opening 11 for a window is formed at an upper part in a front view, and a lower part is formed below the opening.
- a bulging portion 12 corresponding to a mounting portion such as a pick-up plate is formed.
- a reinforcing rib 13 is provided so as to connect the bulging portion 12 and a lower end portion of the inner panel.
- Parts Gl, G2, G3 are provided in the molding die, and molten resin is injected and filled into the molding cavity from these gate parts Gl, G2, G3.
- the gate portions G 1 and G 2 provided on the left and right sides corresponding to the vicinity of the upper inner peripheral portion of the window opening 11 are mainly used for forming cavities corresponding to the upper portion and the left and right side portions of the inner panel I-0.
- a gut portion G3 provided at a substantially central position corresponding to the vicinity of the lower inner peripheral portion of the window opening 11 is a mold mainly corresponding to a lower portion of the inner panel 10. It injects molten resin into the cavity.
- the inner panel 10 was virtually divided into several areas as described below, and the flow and deformation of the molten resin in each part of the inner panel 10 were examined. That is,
- a portion A region surrounding the window opening 11 and the entire inner panel 10 in a frame shape, in other words, a region excluding the following B to C portions.
- Part B An area located in the central part below Part A above, with the above-mentioned bulging part 12 as the main part in the lower center of the inner panel.
- Part C A substantially flat area located on the left and right sides of Part B below Part A.
- Part D An area composed of the area below the part B and the lower end surface 14 of the inner panel 10.
- Part E An area composed of the rear flange 15 of the lower end surface 14 of the inner panel.
- FIGS. 6 and 7 show examples of such molding dies Ml and M2.
- the clearance dimensions of the molding cavities Ma to Me corresponding to the respective parts A to E are shown in FIGS.
- Table 4 shows the set plate thickness of each part of the three samplers 1, 2, and 3 and the measured values of the deformation amount in the H section.
- Sample 1 has the most standard plate thickness setting.
- the lower end of the inner panel 10 has a substantially center portion (H) along the outer peripheral line. Part) bulges from the surface, in other words, when mounted on the vehicle body, protrudes rearward, causing a very large warpage (deformation).
- H substantially center portion
- the molding cavity Me is filled with molten resin due to the resin flow that is filled from a direction substantially perpendicular to the direction, but there is a bulging portion 12 in the central area of the inner panel 10.
- the B portion including the bulging portion 12 and the D portion below the B portion are set to be thin, and furthermore, the reinforcing ribs 13 and 13 may be provided from the B portion to the D portion.
- the flow velocity of the resin flow in a direction substantially perpendicular to this becomes extremely slow. Therefore, the resin flow from the direction along the outer peripheral line of the above-mentioned portion E is filled very quickly, and the degree of fiber orientation in the direction along the outer peripheral line becomes extremely high in the E portion, and the central region (part B) This will be significantly different from the fiber orientation of the reinforcing fiber at the time.
- the flow of the molten resin is schematically shown by broken arrows, and the state of the fiber orientation of the reinforcing fibers at and near the lower end portion (E portion) of the inner panel is schematically shown by a dashed line. ing.
- the tail panel 30 is constructed by assembling the inner panel 10 that has undergone large deformation like this sample 1 to the resin-made panel 20, it becomes very difficult to assemble the two together. Also, even if the inner panel 10 can be assembled, the deformation of the inner panel 10 is so large that the deformation cannot be suppressed and suppressed by the outer panel 20. As a result, for example, as shown in FIG. 10, the deformation of the tenor regate 30 itself appears at the lower end portion and in the vicinity thereof such that a substantially central portion along the outer peripheral line swells from the surface.
- the thickness of the part B including the bulging part 12 is set to be thicker than the same thickness of the sample 1 (equal to the parts A and E), and it is located on the left and right sides.
- the thickness of the portion C is set to be smaller than that of the sample 1 and the force is set to be thinner than the other portions A, B, D, and E of the inner panel 10.
- the outer side is located at the lower end of the inner panel (E portion) where the largest deformation occurs.
- the other side ie, the short side S m
- the thin plate portion part C extending substantially in parallel to one of the outer peripheral line 10 m of the inner panel 10 extending in the same direction as the short side S m Is provided.
- the thickness of the portion B is set to be thicker, which is preferably located above a substantially central portion at the lower end portion of the inner panel 10 (that is, located between the central portion and the gate portion G3).
- the flow of the molten resin flowing substantially at right angles from the gate portion G3 toward the lower end portion of the inner panel is improved. It is presumed that this configuration also contributes to suppressing the fiber orientation from being biased in a specific direction parallel to one of the long side Sn and the outer peripheral line 10n.
- the tail gut 30 is relatively easy to assemble when the inner panel 10 is attached to the resin outer panel 20 to form the tail gut 30.
- this deformation can be suppressed and sufficiently covered by the outer panel 20.
- the deformation of the tenor regate 30 itself appears at the lower end and in the vicinity thereof such that a substantially central portion along the outer peripheral line swells from the surface. None is done.
- the thickness of the sample E was set slightly higher than that of Sampnoré 2 based on the thickness setting of Sample 2 above.
- the thickness of the D portion, which is set to be thinner, and the thickness of the D portion, which is formed by the area below the B portion including the bulging portion 12 and the lower end surface 14 of the inner panel 10, is larger than that of the sample 2,
- the force was also set to be thicker than the other parts A, B, C, and E of the inner panel 10.
- the long side Sn is selected in the vicinity of the end of the inner panel in the direction along the short side Sm (the vertical direction in FIG. 12) crossing the long side Sn.
- a thick plate portion extending substantially in parallel with one of the outer peripheral lines 10 n of the inner panel 10 extending in the same direction as the long side Sn is provided.
- the deformation amount of Sample 3 was further reduced (reduced to 1/2 or less) as compared with Sample 2.
- the clearance of the molding cavity Md corresponding to the thick plate portion (D part) of the molding dies Ml and M2 is set to be larger, so that the molding cavity Md becomes a resin pool. It is presumed that this is because it is possible to make the filling amount and filling speed of the molten resin filled from a plurality of directions relatively uniform at the lower end portion of the inner panel.
- the thick plate cavity portion M d corresponding to the thick plate portion D is made of resin.
- the resin material injected into the molds Ml and M2 from the gate portions Gl, G2 and G3 flows into the thick plate cavity portion Md (resin pool).
- After entering the terminal cavity portion Me it is possible to make the filling amount and the filling speed of the molten resin charged from a plurality of directions relatively uniform with respect to the terminal cavity portion Me. It is possible to suppress a particularly high degree of fiber orientation biased in a specific direction along the terminal cavity Me. As a result, it is possible to suppress the occurrence of large warpage 'deformation at the substantially central portion H in the specific direction of the spinneret 10.
- the fiber-containing resin material injected into the molds Ml, M2 from the gates Gl, G2, G3 is applied to the molding cavity Mc and the thick plate D corresponding to the thin plate C.
- the presence of the corresponding molding cavity Md prevents the fibers from being oriented in the same direction as the outer peripheral line of the lower end at the molding cavity Me corresponding to the lower end (E part) of the inner panel 10. Therefore, it is possible to suppress a particularly high degree of orientation that is biased in a specific direction along the molding cavity Me corresponding to the lower end of the inner panel 10, and as a result, the inner panel 10 The occurrence of large warping and deformation at the substantially central portion (H portion) in the specific direction at the lower end is suppressed.
- FIGS. 13 to 15 are explanatory front views of the inner panel showing various modified examples based on the thickness setting of Sample 3 described above.
- FIGS. 13 to 15 and FIGS. 16 and 17 described later the flow of the molten resin at the time of injection molding is schematically indicated by broken arrows.
- the same reference numerals are given to the components having the same configuration and performing the same operation as those in the sample 3 (see FIG. 12), and further description will be omitted.
- a gate portion G31 for injecting the molten resin into the molding cavity corresponding to the lower portion of the inner panel 10 is provided substantially at the center of the lower portion of the inner panel 10.
- the thick plate portion D 1 similar to the thick plate portion D It is preferable to provide it not only near the lower end portion (E portion) of the panel 10 but also above the B portion in the lower center of the inner panel. As a result, the molten resin from the gate portion G3 flows into the thick plate portion D1 constituting the resin pool at the portion along the lower inner peripheral portion of the window opening 11 as well.
- the molding cavity corresponding to the portion (F portion) along the lower inner peripheral portion of the opening 11 is relatively evenly filled, and deformation at this portion can be effectively suppressed.
- a plurality of gates G 3 and G 3 ′ may be provided substantially at the center of the lower part of the inner panel.
- the thick plate portion D2 is extended over substantially the entire length of the lower end portion of the inner panel (that is, to the same length as the lower end portion E). Therefore, the length of the thin plate portion C2 in the vertical direction is shorter than that of the sample 3 (see Fig. 12).
- the molten resin is applied to the molding cavity Me corresponding to the lower end portion E over substantially the entire length of the lower end portion of the inner panel.
- the filling direction can be made as uniform as possible, and the deformation can be suppressed.
- the third modification shown in FIG. 15 is the same as the second modification of FIG.
- a gate portion G3 for injecting the molten resin into the molding cavity corresponding to the lower portion of the inner panel 10 is provided substantially at the center of the lower portion of the inner panel 10. In this case, the length of the thin plate portion C 3 becomes shorter. Also in this case, as in the case of the first modified example, the thick plate portion D3 similar to the thick plate portion D2 is formed not only near the lower end portion (E portion) of the inner panel 10 but also at the lower center of the inner panel. It is preferable to provide it also above the portion B of FIG. This effectively suppresses deformation not only at the lower end portion (E portion) of the inner panel 10 but also at a portion (F portion) along the lower inner peripheral portion of the window opening 11. .
- the tailgate of a car is taken as an example of the "opening / closing body".
- the present invention is not limited to a powerful case.
- the opening / closing body at the rear of the vehicle which is also called a liftgate, larygate, or backdoor, are effective.
- FIG. 16 is an explanatory front view schematically showing the flow of the molten resin in the interior member 50 having no window opening
- FIG. 17 is a diagram showing a modification of another interior member.
- FIG. 3 is an explanatory front view schematically showing a flow of a molten resin.
- the interior member 50 has a trapezoidal shape that is arranged upside down in a front view. Therefore, this trapezoid can be applied as it is as the rectangle virtually circumscribing the interior member 50.
- a gut portion G5 is set at a mold portion corresponding to the center of the upper end side of the trapezoid.
- the virtual rectangle circumscribing the interior member 50 (in this case, the trapezoid T itself of the interior member 50) is specified.
- the lower side T n circumscribing the lower end side of the interior member where the largest deformation occurs is selected, and near the interior member end in the direction along this lower side ⁇ (the left-right direction in FIG. 16), A thin plate portion C5 extending substantially parallel to the other side intersecting the lower side Tn of the trapezoid ⁇ (that is, the side Tm of the trapezoid T) is provided.
- the other side that is, trapezoid A thick plate portion D5 extending substantially parallel to the lower side Tn
- This thick plate portion D5 is set to be thicker than the thin plate portion C5, as well as the central portion B5, lower end portion E5 and peripheral portion A5 of the interior member 50, and the molten resin
- the thick plate portion D5 becomes a resin pool.
- the thin plate portion C5 is set to be thinner than the thick plate portion D5, as well as the center portion B5, the lower end portion E5, and the peripheral portion A5 of the interior member 50, and the molten resin is reduced.
- the molding cavity corresponding to the lower end portion E5 is filled from the gate portion G5, the flow of the resin in the thin plate portions C5 and C5 becomes slow. Therefore, even when the resin flow is poor due to the unevenness and the swelling portion in the central portion B, the lower end portion E 5 of the interior member 50 is not covered by the molding cavity corresponding to the lower end portion E.
- the filling direction of the molten resin can be made as uniform as possible, and the deformation can be suppressed.
- a gate portion G5 for injecting the molten resin into the molding die is provided substantially at the center of the interior member 50.
- the thick plate portion D5 similar to the thick plate portion D5 described above, Is preferably provided not only near the lower end portion (E5 portion) of the interior member 50 but also above the B portion in the center of the interior member 50.
- the upper terminal portion (F5 portion) of the interior member 50 after the molten resin from the gate portion G5 flows into the thick plate portion D5 'portion forming the resin pool, the upper terminal portion (F5)
- the molding cavity corresponding to (F portion) is relatively evenly filled, and the deformation at this portion can be effectively suppressed.
- a plurality of good parts G5, G5 ' may be provided substantially at the center of the interior member 50.
- each of the thick plate portions intersects with a predetermined side of the virtual rectangle circumscribing the interior member (that is, the long side Sn of the rectangle or the bottom side of the trapezoid) (that is, the rectangular side).
- the short side S m or the trapezoidal side) of the interior member was provided near the end of the interior member.
- the virtual rectangle may be provided so as to extend substantially parallel to one of a predetermined side of the virtual rectangle and the outer peripheral line of the interior member extending in the same direction as the one side.
- a so-called inner panel is exemplified as the “interior member of the opening / closing body”, but the inner panel is not limited to a powerful term and may be attached to the inside of an outer panel (auta panel).
- the present invention can be applied to an inner frame (inner frame) or an inner decorative material (inner trim) that can be attached in addition or alone.
- the rubber component can be improved while increasing the flexural modulus and improving the rigidity of the member by blending the reinforcing ⁇ without particularly impairing the moldability as a material resin and the appearance of the molded product.
- the impact resistance can be ensured by blending the compound, and it is possible to obtain an interior member having good formability and ⁇ H property of a molded product, and having the required Oka I ⁇ and impact resistance. Therefore, for example, doors, bonnets, trunk lids, sunroofs, lift gates (tail gates,
- the present invention can be suitably applied to a resin interior member attached to the inside of an outer plate of an opening / closing body such as a gate or a back door.
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003231543A AU2003231543A1 (en) | 2002-04-30 | 2003-04-28 | Resinous interior member of opening/closing body, mold therefor and method of molding the same |
DE10392573.2A DE10392573B4 (de) | 2002-04-30 | 2003-04-28 | Aus Harz hergestelltes Innenelement eines Öffnungs- und Schliesskörpers und Formungsmatrize dafür |
KR1020047017473A KR100907850B1 (ko) | 2002-04-30 | 2003-04-28 | 개폐체의 수지제 내장부재, 그를 위한 몰드 및 성형방법 |
US10/513,863 US7270863B2 (en) | 2002-04-30 | 2003-04-28 | Resin-made interior member for opening and closing body and molding die and molding method therefor |
JP2004501142A JP4195443B2 (ja) | 2002-04-30 | 2003-04-28 | 開閉体の樹脂製内装部材並びにその成形型 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002128787 | 2002-04-30 | ||
JP2002/128787 | 2002-04-30 |
Publications (1)
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WO2003092984A1 true WO2003092984A1 (fr) | 2003-11-13 |
Family
ID=29397281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/005435 WO2003092984A1 (fr) | 2002-04-30 | 2003-04-28 | Element interieur resineux d'un corps d'ouverture/fermeture, moule pour cet element et procede de moulage de cet element |
Country Status (7)
Country | Link |
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US (1) | US7270863B2 (ja) |
JP (1) | JP4195443B2 (ja) |
KR (1) | KR100907850B1 (ja) |
CN (1) | CN100430203C (ja) |
AU (1) | AU2003231543A1 (ja) |
DE (1) | DE10392573B4 (ja) |
WO (1) | WO2003092984A1 (ja) |
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WO2018101197A1 (ja) * | 2016-11-29 | 2018-06-07 | ダイハツ工業株式会社 | 車両用バックドアインナパネル |
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JP2018158707A (ja) * | 2016-11-29 | 2018-10-11 | ダイハツ工業株式会社 | 車両用バックドアインナパネル |
JP2018158705A (ja) * | 2016-11-29 | 2018-10-11 | ダイハツ工業株式会社 | 車両用バックドアインナパネル |
JP7031090B2 (ja) | 2016-11-29 | 2022-03-08 | ダイハツ工業株式会社 | 車両用バックドアインナパネル |
Also Published As
Publication number | Publication date |
---|---|
DE10392573A1 (de) | 2005-08-25 |
AU2003231543A1 (en) | 2003-11-17 |
AU2003231543A8 (en) | 2003-11-17 |
CN100430203C (zh) | 2008-11-05 |
JP4195443B2 (ja) | 2008-12-10 |
JPWO2003092984A1 (ja) | 2005-09-08 |
CN1649714A (zh) | 2005-08-03 |
US7270863B2 (en) | 2007-09-18 |
DE10392573B4 (de) | 2018-05-09 |
KR20050009700A (ko) | 2005-01-25 |
KR100907850B1 (ko) | 2009-07-14 |
US20050202223A1 (en) | 2005-09-15 |
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