JP4743506B2 - Manufacturing method for interior parts for automobiles - Google Patents

Description

  The present invention relates to a method for manufacturing automotive interior parts such as door trims, rear parcel shelves, floor trims, luggage trims, trunk trims, rear side trims, roof trims, etc., and in particular, the appearance and strength of the outer peripheral terminal portion are excellent, The present invention relates to a method for manufacturing automobile interior parts that can be easily and inexpensively manufactured.

  For example, the configuration of automobile interior parts will be described with reference to FIGS. The door trim 1 has a shape retaining property and attachment rigidity to a door panel, and is configured by laminating and integrating a skin 3 excellent in surface appearance on the surface of a resin base material 2 that extends over almost the entire product surface. . The resin base material 2 is made of polypropylene resin mixed with talc, and the skin 3 does not have a shape-retaining property itself and is a single sheet material of a synthetic resin sheet such as a vinyl chloride sheet. Alternatively, a laminated sheet material in which a cushion layer such as polyethylene foam is laminated on the back surface of a synthetic resin sheet is used, and recently, an elastomer such as a thermoplastic olefin (hereinafter referred to as TPO) sheet in consideration of environmental aspects and recycling aspects. Sheets tend to be used frequently.

  Next, a conventional example of the method for forming the door trim 1 will be described with reference to FIG. First, a molding die 4 that molds the door trim 1 is connected to a molding upper die 5 that can move up and down by a predetermined stroke, a molding lower die 6 that forms a pair with the molding upper die 5, and a molding lower die 6. It is generally composed of the injection machine 7. When the upper and lower molds 5 and 6 are clamped, a cavity portion 5a is formed in the molded upper mold 5 and a core section 6a is provided in the molded lower mold 6 in order to shape the product shape of the door trim 1. Yes. In order to move the molding upper die 5 up and down by a predetermined stroke, an elevating cylinder 5b is connected, and the molding lower die 6 is provided with a manifold 6b and a gate 6c that serve as a passage of molten resin from the injection machine 7. Further, in order to maintain an appropriate posture, the upper molding die 5 that moves up and down is provided with guide posts 6d at the four corners of the lower molding die 6, and the molding upper die 5 has guides corresponding to the guide posts 6d. A bush 5c is provided.

  Therefore, when the molding upper and lower molds 5 and 6 are in the mold open state, either the skin 3 is set in the mold, and then either immediately before or after the molding upper and lower molds 5 and 6 are clamped The molten resin M is injected and filled from the injection machine 7 through the manifold 6b and the gate 6c into the product cavity between both molds at the timing, thereby forming the resin substrate 2 into a required curved shape and The skin 3 is integrally formed on the surface (for example, see Patent Document 1). In FIG. 20, for convenience of explanation, the molten resin M is supplied to the mold surface of the core portion 6 a in an open state. Actually, however, the molten resin M is injected into the cavity after the mold upper and lower molds 5 and 6 are clamped. It may be filled.

  Further, regarding the processing of the outer peripheral terminal of the door trim 1 product, as shown in FIG. 21, after the outer skin 3 is simultaneously press-molded on the surface of the resin base material 2, the resin base material 2 and the outer skin 3 are pressed by the mold blade in the mold. Are subjected to piercing cut processing, or piercing cutting processing is performed in a separate process after molding. Further, as shown in FIG. 22, after press molding of the resin base material 2, the skin 3 is integrated by vacuum pressing, press pressing, etc. in a separate process, and then the terminal 3 a of the skin 3 is placed on the back side of the resin base material 2. The winding process is also conventionally performed.

Japanese Patent Laid-Open No. 10-138268 (Page 2, FIGS. 3 and 4)

  By the way, in the structure of the terminal part of the door trim 1 and the terminal processing method described above, for example, as shown in FIG. 21, when the outer skin simultaneous press molding is performed, the peripheral terminal processing is difficult, the appearance is poor, and the appearance performance In addition, as shown in FIG. 22, in the method of winding the skin 3 in a separate process, a problem is pointed out that man-hours are large and an increase in cost is unavoidable.

  The present invention has been made in view of the above circumstances, and is a method for manufacturing an interior part for an automobile, and in particular, accurately and beautifully performs a winding operation of a winding roller in an outer peripheral terminal processing structure. An object of the present invention is to provide a method for manufacturing an interior part for an automobile that makes it possible.

  In order to solve the above problems, the present inventors are a terminal processing method for a laminated structure having a structure in which a decorative material is attached to the surface of a resin base material and a winding process is performed along the periphery of the product, Uniform heat treatment can be performed in the heating process of the winding white, and the end treatment in the laminated structure can be performed by using a winding piece that can be wound while applying tension in the winding process of the winding white. It has been found that it can be achieved easily and beautifully, and the present invention has been completed.

  That is, the method for manufacturing an automotive interior part according to the present invention includes a resin base material that is molded into a required shape and has an appropriate shape retaining property, and a decorative material that is laminated on the surface side of the resin base material. In a method for manufacturing an interior part for an automobile using a laminated structure as a whole or a part thereof, after setting the laminated structure on a receiving jig, the entire length of the outer peripheral edge of the laminated structure or a part thereof Adhere and hold the winding roll set to 1 by the winding piece of the winding unit, heat and soften the winding roll with the heater unit in that state, then avoid the heater unit and wind the winding roll It is characterized by adopting a terminal processing step in which a winding process is performed on the back side of the main body while adsorbing and holding the frame.

  Here, automobile interior parts include door trims, rear parcel shelves, floor trims, luggage trims, trunk trims, rear side trims, roof trims, and the like. Moreover, as a structure of a laminated structure, if it is the structure which affixes a decorating material on the surface of a base material, the raw material of a base material or a decorating material will not be specifically limited. For example, as the base material, a resin molded body such as an injection molded body, a mold press molded body, a cold press molded body made of a thermoplastic resin can be used. As thermoplastic resins, those that can be preferably used are polyethylene resins, polypropylene resins, polystyrene resins, polyethylene terephthalate resins, polyvinyl alcohol resins, vinyl chloride resins, polyamide resins, polyacetal resins, polycarbonate resins. , Ionomer resins, acrylonitrile / butadiene / styrene (ABS) resins, and the like can be used. Moreover, you may mix various fillers in these thermoplastic resins. Examples of the filler that can be used include inorganic fibers such as glass fiber and carbon fiber, and inorganic particles such as talc, clay, silica, and calcium carbonate. Various additives such as an antioxidant, an ultraviolet absorber, a colorant, a flame retardant, and a low shrinkage agent may be blended.

  Furthermore, in addition to the above-described resin base material made of the thermoplastic resin, a material obtained by adding a foaming agent to a thermoplastic resin can also be used as a lightweight material. For example, the thermoplastic resin may be composed of one kind of thermoplastic resin or two or more kinds of thermoplastic resins. Preferably, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol resin, vinyl chloride resin, polyamide resin, polyacetal resin, polycarbonate resin, ionomer resin, acrylonitrile / butadiene / Styrene (ABS) resin or the like can be used. As the foaming agent, an organic foaming agent such as an azo compound, a sulfohydrazide compound, a nitroso compound or an azide compound, or an inorganic foaming agent such as sodium bicarbonate can be used. The foamed resin substrate obtained by heat-softening the foamed resin sheet and then molded into a required shape preferably has a foaming ratio of 2 to 10 times in view of the balance between the weight and strength of the product. The cell diameter of the foamed resin base material at that time is preferably in the range of 0.1 μm to 2.0 mm, and the thickness is 0.5 to 30 mm, preferably 1 to 10 mm. In addition, a foamed resin base material such as a urethane foamed resin base material or a PPO (polyphenylene oxide) foamed resin base material, a wood fiber board, or the like can also be used.

  On the other hand, as a decorative material to be affixed to the surface of a resin base material, a synthetic resin sheet such as a TPO sheet, a thermoplastic urethane (hereinafter referred to as TPU) sheet, a vinyl chloride sheet, or a fabric sheet such as a woven fabric, a nonwoven fabric, a knitted fabric, Or a laminated sheet material that is used in the form of a single sheet such as a synthetic resin film, a foam, or a net, or a back surface of a synthetic resin sheet or a fabric sheet is lined with a cushion layer such as polyethylene foam, polypropylene foam, or polyurethane foam. It can also be used in the form of

  Next, in the terminal part of the laminated structure, the winding white made of the peripheral terminal of the decorating material may be processed along the peripheral part of the resin base material toward the back surface side of the resin base material, In addition, even if the member that integrates the resin base material and the decorating material is crushed along the product periphery to form a thin wrapping sheet, and the wrapping sheet is wound on the back side of the trim body good. And as a terminal processing method, it is comprised from 2 processes, the heating process of a winding white, and the winding process of a winding white.

  First, in the heating step, since the heating is received from the heater in a state where the winding white is sucked and held in the winding unit on which a vacuum suction force is applied, the winding white does not meander. Moreover, since the entrainment scissors are heated in a state of being regulated in a flat shape, the heating temperature can be kept constant, and problems such as variations in adhesive strength due to uneven heating do not occur. Further, since the entraining scissors are held in the entraining unit in a flat shape by a vacuum suction force, the heater may be in any form of directly contacting or not contacting the entraining scissors. In the contact mode, the heater temperature may be relatively low. However, in the non-contact mode, the heater temperature needs to be set to a high temperature, but the heater does not come into contact with the entrainment white. Can avoid the problem of adhering to the heater unit side.

  Next, with regard to the winding process of the winding scissors, the winding operation of the winding unit with a vacuum suction force is performed on the back side of the trim body with the winding scissors being sucked and held. The winding process can be performed while applying tension to the wrapping squeeze, and a smooth wrapping process can be expected without causing wrinkles or the like.

  By the way, the terminal processing apparatus in the laminated structure according to the present invention includes a resin base material that is molded into a required shape and has an appropriate shape retaining property, and a decorative material that is laminated on the surface side of the resin base material. In a terminal processing apparatus for a laminated structure in which a winding scissor disposed at a peripheral edge of the laminated structure is wound on the back side of the main body, the terminal processing apparatus sets the molded laminated structure at an appropriate position. A receiving jig, a winding unit that sucks and holds a winding slab provided on the entire outer peripheral edge of the laminated structure or a part thereof by vacuum suction force, and a winding slab held by the winding unit. It is characterized by comprising a movable heater unit that heats and softens the back side of the sheet, and the heating step and the winding step are performed in a state where the winding white is adsorbed and held by the winding unit.

  The receiving jig includes a set base for setting the laminated structure, and a spacer and a receiving jig holder for fixing the laminated structure set on the set base. In addition, the winding unit includes a winding piece that sucks and holds the winding frame set at the peripheral edge of the laminated structure, a forward / backward cylinder for driving the winding piece in the forward / backward direction and the vertical direction, It is equipped with an operating cylinder, and the winding piece is connected through a vacuum suction pump and a vacuum hose. The inside of the winding piece is provided with an air chamber, and there are many vacuum holes on the end surface that comes in contact with the winding slide. It has been established. Similarly, the heater unit includes a heater that heats and softens the winding of the laminated structure and a cylinder that operates a support member that supports the heater in the forward and backward directions and the up and down direction, respectively.

  As described above, according to the method for manufacturing an automotive interior part according to the present invention, the terminal part of the laminated structure constituting the whole or a part of the automotive interior part is arranged at the periphery of the laminated structure. Because the heating and winding processes are performed in a state where the winding roller is attracted and held by the vacuum suction force on the winding frame of the winding unit, uniform heating can be performed, and wrinkles, meandering, etc. occur. In addition, the bonding strength can always be kept constant. Accordingly, since heating unevenness does not occur, it is possible to perform the winding process with a uniform bonding strength. Furthermore, since the winding process is performed in a state where the winding white is held on the winding frame by the vacuum suction force, the winding operation can be performed while always applying tension to the winding white, and a good appearance can be maintained. .

  And it becomes possible to heat-treat with a non-contact type heater in the state where it is held by suction on the entraining piece, and since the resin burr of entraining white does not adhere to the heater, the number of maintenance such as cleaning of the heater can be reduced. In addition, there is no unevenness in the winding white, and even if it is a thick winding white, the thickness of the winding white can be kept constant, and the winding operation can be performed smoothly.

  Hereinafter, a preferred embodiment of a method for manufacturing an automotive interior part according to the present invention will be described in detail with reference to a method for manufacturing a vehicle door trim. Note that the gist of the present invention is as described in the scope of claims, and the contents of the embodiments described below are merely examples of the present invention.

  1 to 12 show a first embodiment of the present invention, FIG. 1 is a front view showing a two-tone type automobile door trim, FIG. 2 is a cross-sectional view showing the configuration of the automobile door trim, and FIG. 4 is a front view showing a resin rib and a door trim lower of the door trim upper in the door trim, FIG. 4 is a cross-sectional view showing a configuration of a terminal portion of the door trim upper in the automobile door trim, and FIGS. 5 and 6 show a molding process of the door trim for the automobile. FIG. 7 is an explanatory diagram showing the overall configuration of the terminal processing device used for the terminal processing of the door trim upper, FIG. 8 is an explanatory diagram showing the configuration of the winding piece in the terminal processing device, and FIGS. It is explanatory drawing which each shows the terminal process process of a door trim upper.

  1 and 2, a two-tone type automobile door trim 10 is composed of an upper and lower divided body of a door trim upper 20 made of a laminated structure and a door trim lower 30 made of a single resin product. As functional components to be mounted on the door trim 10, an inside handle escutcheon 11 and a power window switch escutcheon 12 are attached to the door trim upper 20. The door trim lower 30 is provided with a door pocket opening 13, and on the back side thereof, as shown in FIG. 2, a pocket back cover (made of a resin molded body) 14 is attached. On the side, the speaker grill 15 is formed integrally with or separately from the door trim lower 30.

  By the way, the door trim 10 for automobiles according to the present invention is applied to the structure of the door trim upper 20 which is a laminated structure to reduce the weight of the product, improve the appearance of the outer peripheral terminal portion, and form the molding process, terminal It is characterized by a simplified processing process. That is, as shown in FIG. 2, the door trim upper 20 is molded into a desired curved surface shape and has a foamed resin base material 21 having shape retention, and a resin laminated and integrated on the back surface side of the foamed resin base material 21. The rib 22 and the decorating material 23 having a decorating function laminated and integrated on the surface side of the foamed resin base material 21 are roughly configured. In the figure, reference numeral 16 denotes a door panel.

  The foamed resin substrate 21 is heat-molded into a required shape after heat-softening the foamed resin sheet so as to have shape retention, for example, cold press-molded with a molding die having a desired mold surface. About the high expansion | deployment rate part, you may shape the foaming resin base material 21 by vacuum forming. The foamed resin sheet has a structure in which a foaming agent is added to a general-purpose thermoplastic resin. The thermoplastic resin includes a polyethylene resin, a polypropylene resin, a polystyrene resin, a polyethylene terephthalate resin, a polyvinyl alcohol resin, a chloride resin. Vinyl resins, polyamide resins, polyacetal resins, polycarbonate resins, ionomer resins, acrylonitrile / butadiene / styrene (ABS) resins, etc. can be used. As blowing agents, azo compounds, sulfohydrazide compounds, nitroso compounds, azides Organic foaming agents such as compounds and inorganic foaming agents such as sodium bicarbonate can be used. In this embodiment, a foamed resin sheet in which sodium bicarbonate is appropriately added as a foaming agent to a polypropylene resin is used. The expansion ratio of the foamed resin base material 21 is set to 2 to 10 times, and the thickness is set to a range of 0.5 to 30 mm, particularly 1 to 10 mm.

  Next, the resin ribs 22 are disposed on the back side of the foamed resin base material 21, and in particular, as shown in FIG. 3, are set in a predetermined pattern extending in an intersecting manner, and are terminals along the outer peripheral edge of the door trim upper 20. In (rolling white), there is a portion where the resin rib 22 is not provided. In addition, as for this pattern, arbitrary patterns may be selected as long as it is intersecting, such as a vertical and horizontal direction, an oblique direction, or a combination thereof. The resin rib 22 is made of a general-purpose synthetic resin molding, and as a synthetic resin that can be preferably used usually, a polyethylene resin, a polypropylene resin, a polystyrene resin, a polyethylene terephthalate resin, a polyvinyl alcohol resin, a vinyl chloride resin, A polyamide resin, a polyacetal resin, a polycarbonate resin, an ionomer resin, an acrylonitrile / butadiene / styrene (ABS) resin, or the like may be selected as appropriate. In this embodiment, a polypropylene resin is used in consideration of environmental and recycling aspects. Is used. The resin rib 22 is appropriately mixed with a filler such as inorganic fibers such as glass fiber and carbon fiber, and inorganic particles such as talc, clay, silica and calcium carbonate in the thermoplastic resin. May be.

  As described above, the door trim 10 shown in FIGS. 1 to 3 includes the door trim upper 20 made of a laminated structure and the door trim lower 30 made of a single synthetic resin, and has excellent appearance design due to the accent effect on the appearance. It has. Further, the door trim upper 20 includes a foamed resin base material 21 having shape retention, a resin rib 22 laminated and integrated on the back surface of the foamed resin base material 21, and a decorating material 23 having a decorating property. Therefore, it is possible to abolish the heavy resin base material that has been occupied over the entire surface of the product as in the past, and to use the lightweight foamed resin base material 21, the weight of the product is compared with the conventional example. The weight can be reduced by 40% or more, the resin material can be saved significantly, and the cost can be reduced.

  Furthermore, since the foamed resin base material 21 has a porous structure, the door trim upper 20 is excellent in sound absorption performance and can reduce noise in the vehicle interior. Moreover, in order to maintain the sound absorption of the foamed resin base material 21, the decorative material 23 laminated in advance on the surface of the foamed resin base material 21 or integrated and laminated at the time of molding is a woven fabric. A fabric sheet having air permeability such as a nonwoven fabric or a knitted fabric is preferred. The decorative material 23 is not only a fabric sheet such as a woven fabric, a nonwoven fabric, and a knitted fabric, but also a single sheet such as a synthetic resin sheet such as a TPO sheet, a TPU sheet, and a vinyl chloride sheet, a synthetic resin film, a foam, and a net-like body. Can be used. Moreover, the laminated sheet material which backed cushion layers, such as a polyethylene foam, a polypropylene foam, a polyurethane foam, can be used for the back surface of a synthetic resin sheet or a fabric sheet. In addition, when a TPO sheet is used, since it can unify with an olefin resin material, it is advantageous in terms of recycling.

  Next, the terminal processing structure along the outer periphery of the door trim upper 20 in the door trim 10 will be described with reference to FIG. That is, as described above, the door trim upper 20 is integrated with the resin ribs 22 that reinforce the rigidity on the back surface of the lightweight foamed resin base material 21 having shape retention, and on the surface of the foamed resin base material 21. The decorative material 23 having a decorative property is laminated and integrated. Further, a vertical wall flange 24 is extended toward the door panel 16 along the product outer periphery of the door trim upper 20, and a wrapping white 26 is formed based on a hinge portion 25 located at the tip of the vertical wall flange 24. It is wound on the back side of the foamed resin base material 21.

  Accordingly, the terminal processing portion of the door trim upper 20 does not expose the cut end. In particular, since the hinge portion 25 corresponds to the outer peripheral line of the door trim upper 20, a sharp outer peripheral line can be secured, and the appearance looks good. In addition to being excellent, the double-side structure in which the winding scissors 26 are folded back and fixed can enhance the rigidity of the terminal portion, there is no risk of undulation deformation, etc., and it can be closely contacted with the door panel 16 and the alignment accuracy can be improved. There is an advantage that it can be increased. Further, even when the mating shape is provided with a certain clearance with the counterpart part, the mating accuracy can be increased.

  Next, the outline | summary of the manufacturing method of the door trim 10 including the terminal processing process of the outer periphery terminal part of the door trim upper 20 is demonstrated below. First, the molding die 40 used for molding the door trim 10 will be described. As shown in FIG. 5, a molding die 40 used for molding the door trim 10 includes a molding upper die 41 that can move up and down by a predetermined stroke, a fixed molding lower die 42 that forms a pair with the molding upper die 41, and molding. This is mainly composed of two injection machines 43 a and 43 b connected to the lower mold 42. More specifically, the molding upper die 41 has a cavity portion 411 that matches the product shape, and is driven up and down by a predetermined stroke by an elevating cylinder 412 connected to the upper surface of the molding upper die 41. In addition, guide bushes 413 serving as a guide mechanism are provided at the four corners of the molding upper die 41.

  On the other hand, the molding lower die 42 is provided with a core portion 421 corresponding to the cavity portion 411 of the molding upper die 41. In addition, manifolds 422a and 422b and gates 423a and 423b are provided to supply the molten resin to the mold surface of the core portion 421. The molten resins M1 and M2 supplied from 43a and 43b are supplied into a groove 424 formed on the upper surface of the core 421 and into a cavity 425 for forming the door trim lower 30. In addition, guide posts 426 that serve as a guide mechanism protrude from the four corners of the molded lower mold 42, and the guide posts 426 guide into the guide bush 413 when the molded upper and lower molds 41 and 42 are clamped. As a result, the pressing posture of the molding upper die 41 can be properly maintained.

  Next, steps of the method for manufacturing the door trim 10 described above will be described. First, what laminated the decorating material 23 on the one side of the foamed resin sheet S with a heater apparatus (not shown) is heat-softened to predetermined temperature. As this foamed resin sheet S, a polypropylene foam sheet (manufactured by Sumika Plustech, trade name: Sumiceller foam PP sheet, foaming magnification = 3 times, thickness 3 mm) is used in this embodiment. Subsequently, as shown in FIG. 5, the heat-softened foamed resin sheet S (with the decorative material 23 laminated) is formed between the cavity portion 411 of the molding upper mold 41 and the molding lower mold 42 at the location corresponding to the door trim upper 20. Set in the upper half of the cavity defined by the core part 421.

  Then, after setting the foamed resin sheet S, the molding upper die 41 is lowered by a predetermined stroke by driving the elevating cylinder 412 in the molding upper die 41, and the molding upper and lower dies 41, 42 are clamped as shown in FIG. Then, the foamed resin sheet S is shaped along a desired mold surface shape, and the foamed resin base material 21 is molded. Further, in order to form the resin rib 22 in the door trim upper 20 from the first injector 43a through the manifold 422a and the gate 423a, the molten resin M1 is injected and filled into the groove portion 424 of the core portion 421. Subsequently, in order to mold the door trim lower 30, the molten resin M2 is injected and filled into the door trim lower molding cavity 425 from the second injection machine 43b through the manifold 422b and the gate 423b, and the door trim lower 30 is molded into a required shape. Is done.

  Therefore, the resin ribs 22 in the door trim upper 20 are molded into a required shape by injecting and filling the molten resins M1 and M2 into the cavities from the first injection machine 43a and the second injection machine 43b, respectively. A door trim lower 30 is formed. As the molten resins M1 and M2, Sumitomo Nobrene BUE81E6 (polypropylene manufactured by Sumitomo Chemical Co., Ltd., melt index = 65 g / 10 min) is used, and talc is mixed in an appropriate proportion. The injection timing of the molten resins M1 and M2 may be set before the mold upper and lower molds 41 and 42 are clamped. Thus, in order to manufacture the two-tone type door trim 10, two injection machines 43 a and 43 b are connected to the molding lower mold 42, and the molten resin M <b> 1 passes through each resin passage for the door trim upper 20 and the door trim lower 30. , M2 can be injection-filled to form the two-tone door trim 10 with a single mold 40 and a reduced number of processes.

  And in the manufacturing method of the door trim 10 mentioned above, especially the door trim upper 20 requires the terminal processing process mentioned later. To perform this terminal processing work, a terminal processing device 50 shown in FIG. 7 is used. The overall configuration of the terminal processing device 50 will be described with reference to the drawings. The terminal processing device 50 heats the receiving jig 60 for setting the door trim upper 20, the winding unit 70 for sucking and holding the winding target portion in the door trim upper 20, and the winding white 26. The heater unit 80 is generally configured.

  More specifically, the receiving jig 60 includes a set base 61 for setting the door trim upper 20, a spacer 62 for positioning and fixing the door trim upper 20 at a predetermined position, and a receiving jig presser 63. . Further, the winding unit 70 includes a winding piece 71 that sticks and holds the winding roller 26 of the door trim upper 20, and the winding piece 71 is wound around the piston rod 72 a of the forward / backward movement cylinder 72 that moves the winding piece 71 forward and backward. 71 is attached, and the winding piece 71 operates along the advancing / retreating direction with respect to the receiving jig 60 by the advancing / retreating operation of the advancing / retreating cylinder 72. The table 72b that supports the forward / backward movement cylinder 72 is attached to the upper end of the piston rod 73a of the vertical movement cylinder 73. When the vertical movement cylinder 73 moves up and down, the table 72b moves up and down. As a result, the winding piece 71 also performs the same stroke up and down operation.

  Further, the winding piece 71 is connected to a vacuum hose 74 as shown in FIG. 8, and the air chamber 71 a inside the winding piece 71 is connected to a vacuum suction pump (not shown) through the vacuum hose 74. A large number of vacuum holes 71c having a diameter of about 1 to 1.2 mm are formed in the end surface 71b of the winding piece 71 that comes into contact with the winding shell 26. Similarly, with respect to the heater unit 80, the heater 81 is attached to the support member 82. The support member 82 is attached to the advance / retreat operation cylinder 83, and can be advanced / retracted, and the support plate 84 is used for the up / down operation. The heater 81 is moved up and down by driving the cylinder 85 connected to the cylinder 85 and moving up and down.

  Next, a terminal processing step in the door trim upper 20 will be described based on FIGS. 9 to 12. First, as shown in FIG. 9, after forming the door trim upper 20, the door trim upper 20 is set on the set base 61 of the receiving jig 60. After positioning the door trim upper 20 at a predetermined position, the door trim upper 20 is fixed by the spacer 62 and the receiving jig holder 63. At this time, the winding piece 71 in the winding unit 70 is located away from the receiving jig 60, and the heater 81 in the heater unit 80 is also avoided upward.

  Then, after setting the door trim upper 20 on the set base 61 of the receiving jig 60, as shown in FIG. 10, the forward / backward movement cylinder 72 in the winding unit 70 is operated, and the piston rod 72a is extended. The vacuum suction pump is connected to the winding piece 71 when the winding piece 71 is in contact with the winding block 26 until the winding piece 71 contacts the winding block 26 of the door trim upper 20. Is driven and a vacuum suction force acts, and the winding sill 26 is attracted and held on the end surface 71b of the winding piece 71.

  Further, the heater unit 80 operates in a state where the winding roller 26 is attracted and held on the end surface 71 b of the winding frame 71, and the heater 81 is wound by driving the vertical movement cylinder 85 and the forward / backward movement cylinder 83. 26 or face each other with a slight clearance. In this case, the heater 81 is not necessarily in contact with the entrainment scissor 26, and in the case of a contact type in which contact is made, the temperature of the heater 81 can be set to a relatively low temperature such as 170 to 180 ° C. On the contrary, in the case of the non-contact type, it is necessary to set the temperature to a high temperature such as 230 to 250 ° C. In the case of the non-contact type, the entrainment scissor 26 and the heater 81 are not in direct contact with each other, so that resin burrs or the like do not adhere to the heater 81. There are no irregularities or the like. The clearance in the non-contact type is preferably about 2 mm.

  Next, in the heating process by the heater 81 shown in FIG. 10, the winding suction of the door trim upper 20 is attracted to the end surface 71 b of the winding piece 71 by applying a vacuum suction force by the winding piece 71 in the winding unit 70. Since the heating process is performed by the heater 81 in the held state, the entrainment white 26 does not meander, and the heating by the heater 81 is performed in a state of being regulated in a flat shape. In addition, there are no problems such as variations in adhesive strength, and there is no meandering, and it is possible to perform a winding process in a flat shape in a subsequent process.

  Then, after the heating softening process is performed on the winding scissors 26 of the door trim upper 20, the winding process steps of the winding scissors 26 shown in FIGS. 11 and 12 are continuously performed. That is, as shown in FIG. 11, the piston rod 72 a is extended by driving the forward / backward movement cylinder 72, and the winding piece 71 is moved horizontally along the winding direction (arrow direction) of the winding roller 26. Then, the winding roller 26 is wound at an angle of about 90 °. At this time, the winding white 26 is wound while being attracted and held on the end surface 71b of the winding piece 71, and therefore is wound with tension, so that wrinkles and the like are not generated in the outer peripheral terminal portion.

  Subsequently, as shown in FIG. 12, when the up / down operation cylinder 73 is driven and the piston rod 73a is contracted, the winding piece 71 is lowered in the direction of the arrow, and the winding white 26 is made of the foamed resin base. The winding process is performed so as to follow the back side of the material 21. Even at this time, the winding process is performed while the winding sill 26 is attracted and held on the end surface 71b of the winding piece 71, so that an appropriate tension is applied and the winding operation is performed smoothly.

  Thus, the terminal processing step of the door trim upper 20 in the first embodiment is a state in which the winding silo 26 is sucked and held by applying a vacuum suction force to the end surface 71b of the winding piece 71 in the winding unit 70, that is, Since the heat treatment by the heater 81 is performed in a state in which the winding scissors 26 are held in a flat shape by a vacuum suction force, uniform heat treatment without variation is possible, and heating unevenness does not occur. Furthermore, since the winding process is performed on the back surface of the foamed resin base material 21 while the winding sheet 26 is sucked and held by the vacuum suction force applied to the winding frame 71, the winding sheet 26 can be wound while applying tension. Therefore, wrinkles or the like are not generated in the product terminal portion, and a smooth winding operation and a beautiful appearance can be expected.

  FIGS. 13 to 17 show a second embodiment of the present invention. FIG. 13 is a front view showing an integrated door trim, and FIGS. 14A and 14B are sectional views showing the structure of the door trim. 15 to 17 are explanatory views showing a terminal processing step in the door trim. The automobile door trim 100 applied to the second embodiment is not a two-tone type but an integrated door trim 100, which is attached to the indoor surface side of a door panel (not shown) by a clip or resin (not shown), and has a desired curved surface. The decorative material 120 is affixed on the surface side of the resin base material 110 which is molded into a shape and has a door panel mounting rigidity. As the resin base material 110, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol resin, vinyl chloride resin, polyamide resin, polyacetal resin, polycarbonate can be preferably used. Resin, ionomer resin, acrylonitrile / butadiene / styrene (ABS) resin, and the like can be used. Moreover, you may mix various fillers in these thermoplastic resins. Examples of the filler that can be used include inorganic fibers such as glass fiber and carbon fiber, and inorganic particles such as talc, clay, silica, and calcium carbonate. Various additives such as an antioxidant, an ultraviolet absorber, a colorant, a flame retardant, and a low shrinkage agent may be blended.

  Then, using these thermoplastic resins, the resin base 110 is formed into a desired curved shape by a conventional molding method such as mold press molding, injection molding, cold press molding, etc., and is decorated when the resin base 110 is molded. The material 120 is integrally formed. As this decorating material 120, a laminated sheet material in which a cushion layer 122 is lined on the back surface of the top layer 121 is used, and a winding sheet 123 is wound around the peripheral edge of the door trim 100 on the back surface side of the resin base material 110. Is being processed.

  Furthermore, the terminal processing apparatus 50 of the first embodiment can also be used for the step of winding the winding sheet 123 on the back side of the resin base 110. That is, as shown in FIG. 15, after setting the door trim 100 on the receiving jig 60, the winding piece 71 in the winding unit 70 is operated as shown in FIG. In a state where the heater 81 is lowered and heat-treated in the state where the end surface 71b of the winding piece 71 in the unit 70 is attracted and held, as shown in FIG. 17, the winding unit 70 is driven to replace the winding white 123 with resin. What is necessary is just to heat-weld and fix to the back surface side of the base material 110.

  Also in the second embodiment, a vacuum suction force is applied to the end surface 71b of the winding piece 71 in the winding unit 70 to attract and hold the winding white 123, and heat treatment by the heater 81 is performed in a state of being regulated in a flat shape. As a result, heating unevenness does not occur. At this time, the winding piece 123 is wound around the back surface of the resin base material 110 while applying tension by the winding piece 71, so that a beautiful terminal process is performed without causing wrinkles. Therefore, also in the terminal processing step of the winding scissors 123 of the integrated door trim 100 in the second embodiment, the winding scissors 123 are attracted and held by the vacuum suction force on the winding top 71 and subjected to the heating step and the winding step. Thus, there is no occurrence of defects such as wrinkles and meandering, and the winding roller 123 can be beautifully wound, and the terminal processing work can be performed beautifully.

  In the embodiment described above, the method of the present invention is applied to the terminal processing work in each molding method of the door trim upper 20 and the integrated automobile door trim 100 in the two-tone type automobile door trim. Besides, it can be applied to all interior parts such as rear parcel shelf, floor trim, luggage trim, trunk trim, rear side trim, and roof trim.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a first embodiment of a vehicle door trim manufactured by applying a method for manufacturing an interior component for a vehicle according to the present invention. It is the II-II sectional view taken on the line in FIG. It is a front view which shows the resin rib and door trim lower of the door trim upper in the door trim for motor vehicles shown in FIG. It is sectional drawing which shows the structure of the terminal part of the door trim upper in the door trim for motor vehicles shown in FIG. It is explanatory drawing which shows the setting process of the raw material in the shaping die in the manufacturing method of the door trim upper shown in FIG. It is explanatory drawing which shows the formation process in the manufacturing method of the door trim upper shown in FIG. It is explanatory drawing which shows the whole structure of the terminal processing apparatus used for the terminal processing process in the manufacturing method of the door trim upper shown in FIG. It is explanatory drawing which shows the structure of the winding piece of the winding unit in the terminal processing apparatus shown in FIG. It is explanatory drawing which shows the terminal process process in the manufacturing method of the door trim upper shown in FIG. It is explanatory drawing which shows the terminal process process in the manufacturing method of the door trim upper shown in FIG. It is explanatory drawing which shows the terminal process process in the manufacturing method of the door trim upper shown in FIG. It is explanatory drawing which shows the terminal process process in the manufacturing method of the door trim upper shown in FIG. It is a front view which shows the 2nd Example of the door trim for motor vehicles manufactured by applying the manufacturing method of the interior component for motor vehicles based on this invention. It is sectional drawing which shows the structure of the door trim shown in FIG. 13, (a) is the sectional view on the AA line in FIG. 13, (b) is the sectional view on the BB line in FIG. It is explanatory drawing which shows the setting process of the door trim in the terminal processing operation | work of the door trim shown in FIG. It is explanatory drawing which shows the heating process of the winding white in the terminal processing operation | work of the door trim shown in FIG. It is explanatory drawing which shows the winding process process of the winding white in the terminal processing operation | work of the door trim shown in FIG. It is a front view which shows the conventional door trim. It is the XIX-XIX sectional view taken on the line in FIG. It is explanatory drawing which shows the outline | summary of the shaping | molding method of the conventional door trim. It is explanatory drawing which shows the prior art example of the terminal part of the door trim by press molding. It is explanatory drawing which shows the prior art example of the terminal part in a skin-wrapping type door trim.

Explanation of symbols

10 Two-tone type automotive door trim 20 Door trim upper (laminated structure)
21 Foamed resin base material 22 Resin ribs 23 Decorating material 24 Vertical wall flange 25 Hinge part 26 Roll-in white 30 Door trim lower (single resin)
40 Molding mold 41 Molding upper mold 42 Molding lower mold 43a, 43b Injection machine 50 Terminal processing device 60 Receiving jig 61 Set stand 62 Spacer 63 Receiving jig holding 70 Rewinding unit 71 Rewinding piece 71a Air chamber 71b End face 71c Vacuum Hole 72, 73 Cylinder 74 Vacuum hose 80 Heater unit 81 Heater 83, 85 Cylinder 100 Door trim for automobile 110 Resin base material 120 Decorating material 121 Top layer 122 Cushion layer 123 Rolling white S Foamed resin sheet M1, M2 Molten resin

Claims (2)

It consists of a resin base material (21, 110) molded into a required shape and having an appropriate shape retaining property, and a decorating material (23, 120) laminated on the surface side of the resin base material (21, 110). In the manufacturing method of the interior part (10) for automobiles, which employs the laminated structure (20, 100) in whole or in part,
After setting the laminated structure (20, 100) on the receiving jig (60), the full length of the outer peripheral edge of the laminated structure (20, 100) or a winding sill (26, 123) is sucked and held by the winding piece (71) of the winding unit (70), and in this state, the winding unit (26, 123) is heated and softened by the heater unit (80), and then the heater unit (80). In the interior parts for automobiles, the terminal processing step is adopted in which the winding scissors (26, 123) are wound and held on the back side of the main body while being sucked and held by the winding pieces (71). Production method. It consists of a resin base material (21, 110) molded into a required shape and having an appropriate shape retaining property, and a decorating material (23, 120) laminated on the surface side of the resin base material (21, 110). In the terminal processing device (50) of the laminated structure that performs the winding process (26, 123) disposed on the periphery of the laminated structure (20, 100) on the back side of the main body,
This terminal processing device (50) includes a receiving jig (60) for setting the laminated structure (20, 100) after molding to an appropriate position, and the entire length of the outer peripheral edge of the laminated structure (20, 100), or A winding unit (70) that sucks and holds the winding rolls (26, 123) provided in a part by a vacuum suction force, and a winding roll (26, 123) held by the winding unit (70). The movable heater unit (80) that heats and softens the back side of the paper, and the heating step and the winding step are performed in a state where the winding white (26, 123) is adsorbed and held by the winding unit (70). The terminal processing apparatus of the laminated structure characterized by the above-mentioned.

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