JP2010179485A - Method and apparatus for molding laminated molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for molding a laminated molding with the skin stuck to a resin core material surface, wherein surface feeling and soft feeling of a skin are successfully maintained by adopting a skin post-sticking processing system and cost reduction is attained by simplifying equipment and using no adhesive. <P>SOLUTION: A first metallic molding die 50 for molding a resin core material 20 is arranged at a first stage A and further a second metallic molding die 60 for molding the skin 30 is arranged at a second stage B. A lower die 53 in the first metallic molding die 50 and an upper die 62 in the second metallic molding die 60 are shared with a metallic die for pressing the resin core material 20 and the skin 30. Further temperature of an upper die 52 in the first metallic molding die 50 is set to be higher than temperature of the lower die 53 in the first metallic molding die 50. Thereby the resin core material 20 and the skin 30 can be integrated by welding by utilizing excess heat of the resin core material 20 and consequently use of the adhesive is not needed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding method and a molding apparatus for laminated molded articles suitable for automobile interior parts such as door trims, rear parcel shelves, rear side trims, luggage side trims, roof trims, etc., and a resin core material molded into a required shape In order to prevent the surface texture and softness of the skin from being spoiled, the post-pasting method for the skin is adopted. The present invention relates to a method for forming a laminated molded product and a molding apparatus capable of providing a good working environment due to cost reduction by shortening the adhesive and abolishing the adhesive.

  FIG. 10 shows an automotive door trim 1 mounted on the interior surface of a vehicle door panel. The automotive door trim 1 is molded into a required shape as shown in FIG. 11, and has shape retention and mounting rigidity to the door panel. In many cases, a laminated molded product is used in which a surface 3 imparting a surface texture and soft feeling is pasted on the surface of the resin core material 2 provided with. Then, as a molding method of a laminated molded product in which the skin 3 is pasted on the surface of the resin core material 2 like this kind of door trim 1, the skin 3 is set in a molding die in consideration of mass productivity. Although insert molding for forming a resin core material has been proposed, the skin 3 is subjected to excessive pressure due to the resin pressure at the time of forming the resin core material 2, and in the case of fabric specification, hair fall occurs. In the case of a resin sheet, it has been pointed out that defects such as squeezing out are liable to cause poor appearance and tend to impair the soft feeling.

  Therefore, in order to maintain good appearance performance and take advantage of the cushioning performance of the skin 3, a method is adopted in which after the resin core material 2 is molded, the skin 3 is pasted by post-pasting. That is, as shown in FIG. 12, after the resin core material 2 is molded into a required shape by an injection molding method, a mold press molding method, or the like, the adhesive 4 is applied to the surface of the resin core material 2 and dried. In general, the surface 3 is integrated with the surface of the resin core material 2 by pressure bonding through an adhesive. A conventional example of the post-pasting method of the skin 3 is described in detail in Patent Document 1.

JP 2001-287237 A

  Thus, when the method of sticking the skin 3 by post-bonding after forming the resin core material 2 into a required shape, the surface texture of the skin 3 can be maintained well and the cushion performance of the skin 3 is achieved. However, as shown in FIG. 12, the manufacturing process is 4 such as the resin core material 2 molding process, the adhesive 4 application process, the drying process, and the skin 3 crimping process. Since a process is required, man-hours are large, and it is necessary to prepare a mold and a jig for each process, the cost is greatly increased, and in particular, since the adhesive 4 is used, the adhesive 4 At the same time, the problem of not only prolonging the man-hours such as the coating process and the drying process but also deteriorating the working environment has been pointed out.

  The present invention has been made in view of such circumstances, and in order to maintain the surface texture and softness of the laminated molded product, the laminated molded product in which the skin is pasted on the surface of the resin core material by post-paste processing. In this molding method and molding equipment, the cost can be greatly reduced by simplifying the equipment, and the man-hours can be shortened and the work environment can be maintained well by eliminating the adhesive. It is an object of the present invention to provide a molding method and a molding apparatus for a laminated product.

  In order to solve the above-mentioned problems, the present inventor, as a result of earnest research, has simplified the equipment by sharing the resin core molding mold and the skin molding mold as the post-bonding mold for the skin. At the same time, by setting the mold temperature of the upper mold at the time of molding the resin core higher than the mold temperature of the lower mold, the residual heat of the resin core is used, and without using an adhesive, Focusing on the ability to achieve integrated welding of the skin, the present invention has been completed.

  That is, the present invention provides a resin core material molded into a required shape and a first molding metal disposed on the first stage in a method for forming a laminated molded article obtained by attaching a skin to the surface of the resin core material. By supplying the resin material into the upper and lower mold cavities in the mold, molding the resin core material into the required shape along the cavity shape, and setting the mold temperature of the upper mold higher than the mold temperature of the lower mold, A resin core material molding process for maintaining the skin facing surface in a softened state, and a raw sheet is supplied into the upper and lower mold cavities in the second molding die arranged on the second stage, and the skin is formed along the cavity shape. Forming the skin into the required shape, opening the upper and lower molds of the first molding die in the first stage, and then holding the resin core on the lower mold and the second in the second stage The upper and lower molds of the mold Then, the lower mold in the first mold is slid in a state where the upper mold holds the skin, and the lower mold in the first mold is positioned directly below the upper mold in the second mold. A positioning step of the molding die for positioning the resin, and a lowering operation of the upper die of the second molding die in the second stage to soften the resin core material held on the lower die of the first molding die It is characterized by comprising a step of pressure-bonding the skin to the surface of the resin core, the surface of the resin core being bonded to the surface of the resin core without using an adhesive.

  Furthermore, the molding apparatus used in the method of the present invention is a molding apparatus for a laminated molded article in which a skin is pasted on the surface of a resin core molded into a required shape. The first molding die is disposed and the second molding die is disposed on the second stage for performing two kinds of processing for molding the skin while the skin is pasted on the surface of the resin core material. The upper mold is connected to the first press, is supported so as to be movable up and down for a predetermined stroke, and the upper mold is softened in order to soften the skin facing surface of the resin core material. The mold temperature of the mold is set higher than the mold temperature of the lower mold, and the second mold has the upper mold connected to the second press machine, the skin molding process, and the skin application process. Is supported so that it can move up and down with different strokes, and the first mold The mold and the lower mold of the second mold are fixed on the movable table, the movable table reciprocates between the first stage and the second stage, and the lower mold in the first mold is the second. It is characterized in that it can be positioned at a position directly below the upper mold in the molding die.

  Here, the laminated molded product can be applied to automobile interior parts such as a door trim, a rear parcel shelf, a rear side trim, a luggage side trim, and a roof trim. In particular, it is suitable for interior parts where the surface texture of the skin is good and a soft feeling is required.

  Laminated molded products are composed of a resin core material and a skin adhered to the surface thereof. As the resin core material, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, polyvinyl alcohol resin are used. Vinyl chloride resin, polyamide resin, polyacetal resin, polycarbonate resin, ionomer resin, acrylonitrile / butadiene / styrene (ABS) resin, and the like. The skin is preferably a laminated sheet material with a cushion layer on the back of the top layer. As the top layer, soft synthetic resin sheets such as TPO (thermoplastic olefin) and PVC (soft vinyl chloride) sheets and cloth sheets such as cloth and nonwoven fabric can be used, and as the cushion layer, polypropylene foam, polyethylene foam, polyurethane foam A foamed resin sheet such as can be used.

  In the first stage, the resin core material is molded, and in the second stage, the skin is molded and the resin core material and the skin are pressed. Here, the first molding die arranged on the first stage is composed of an upper die connected to the first press machine, an upper die, a mold clamp, and a lower die that can be opened. As a material supply mechanism for the resin core material, there can be used a mechanism in which an injection cylinder is connected to the lower mold, and a molten resin is supplied into the cavity from the injection cylinder through a manifold and gate provided in the lower mold. The cylinder head may be inserted into the cavity before the upper and lower molds are clamped, and the molten resin may be supplied in an open state on the lower mold surface. Further, as a material for the resin core material, a resin sheet material obtained by extruding a thermoplastic resin material into a sheet shape by a T-die extruder may be heat-softened and then charged into a mold.

  And what is important in the first molding die is that the mold temperature of the upper mold is maintained at a higher temperature than the mold temperature of the lower mold. This is because the residual heat of the resin core material is used to achieve integration with the skin without using an adhesive. For example, when the mold temperature of the lower mold is 40 ° C. and the mold temperature of the upper mold is set to 90 ° C., the surface temperature of the resin core material can be maintained at 140 ° C., and in this state If they are crimped to the skin, they can be welded together.

  Furthermore, the lower mold in the first molding die in the first stage is fixed to the movable table, and the movable table reciprocates by a predetermined stroke, so that the lower mold in the first molding die is the second stage. To be used as a pressure-bonding die when the skin is pressure-bonded to the surface of the resin core material.

  Next, the second molding die arranged on the second stage is composed of an upper die connected to the second press machine, and a lower die that is clamped and opened by the matched die method with the upper die. The lower mold is also fixed to the movable table, and when the lower mold in the first molding die is conveyed to the second stage, the lower mold in the second molding die does not interfere with the lower mold. Has been evacuated. And since the upper mold | type in a 2nd shaping | molding die needs to hold | maintain a skin to a mold surface after shaping | molding a skin, it has a skin holding | maintenance mechanism, and the molding process of a skin, and a resin core In the crimping process for crimping the skin to the surface of the material, it is necessary to make the upper and lower mold clearances different from each other, so the stroke of the second press machine is controlled in two stages: the skin molding stroke and the skin crimping stroke.

  In order to mold a laminated molded product using the molding apparatus configured as described above, the resin core material is molded into a required shape by the first molding die arranged on the first stage, and the upper mold By setting the mold temperature higher than the mold temperature of the lower mold, the skin facing surface of the resin core material is maintained in a softened state. Further, the outer skin is formed into a required shape by the second molding die in the second stage.

  Next, the resin core material is held by holding the resin core material on the lower mold of the first molding die and holding the skin on the upper mold of the second molding die and operating the movable table. By transferring the lower mold of the first molding die to the second stage and positioning the upper mold in the second molding die and the lower mold in the first molding die at corresponding positions, the resin core The material and the skin can be positioned at appropriate positions.

Thereafter, the skin can be pressure-bonded to the resin core material by lowering the second press. At this time, since the skin facing surface of the resin core material is in a softened state, the skin facing surface can be melted by residual heat of the resin core material, and the skin can be integrally welded without using an adhesive. . In addition, the press pressure at the time of crimping the skin to the resin core material is 0.5 kg / cm ² , and considering that the resin pressure of 300 kg / cm ² is applied in the conventional insert injection method, It can be understood that the surface texture is good and the soft feeling can be maintained well.

  As is apparent from the above configuration, according to the method of the present invention, after the resin core material is molded, the preformed skin is pasted on the resin core material by post-bonding processing, so the surface texture of the skin is good, And a good soft feeling is obtained. Furthermore, by sharing a part of the first molding die for molding the resin core and the second molding die for molding the skin as a crimping die for the skin, the number of molds can be reduced. Adhering to the first mold by setting the upper mold temperature higher than that of the lower mold and welding and integrating with the skin using the residual heat of the resin core. Since the agent can be abolished, the adhesive application process and the drying process can be abolished, and the working environment can be maintained well.

  As described above, according to the molding method and molding apparatus of the laminated molded product according to the present invention, after molding the resin core material and the skin, the skin is post-bonded to the surface of the resin core material. The texture and soft feeling can be maintained well, and the quality performance of the product can be enhanced, and the structure of the molding apparatus is to mold the first molding die and the skin for molding the resin core material. By sharing a part of the second molding die to be used as the crimping die for the skin, it is possible to simplify the mold equipment, and by eliminating the adhesive, the adhesive application process and drying The process can be abolished, man-hours can be further shortened, and the working environment can be favorably maintained.

It is a front view which shows the door trim for motor vehicles manufactured by applying the molding method of the laminated molded product which concerns on this invention. It is the II-II sectional view taken on the line in FIG. It is explanatory drawing which shows schematic structure of the shaping | molding apparatus of the laminated molded product which concerns on this invention. It is explanatory drawing which shows the molding process of the resin core material in the molding method of the door trim which uses the shaping | molding apparatus shown in FIG. It is explanatory drawing which shows the shaping | molding process of the skin in the shaping | molding method of the door trim which uses the shaping | molding apparatus shown in FIG. It is explanatory drawing which shows the mold open state of each molding die in the molding method of the door trim which uses the molding apparatus shown in FIG. It is explanatory drawing which shows the conveyance process of the lower mold | type in the molding method of the door trim which uses the shaping | molding apparatus shown in FIG. It is explanatory drawing which shows the crimping process process of the resin core material and skin in the molding method of the door trim which uses the shaping | molding apparatus shown in FIG. It is explanatory drawing which shows the modification of the shaping | molding apparatus of the laminated molded product which concerns on this invention. It is a front view which shows the conventional door trim for motor vehicles. It is the XI-XI sectional view taken on the line in FIG. It is explanatory drawing which shows the shaping | molding method of the door trim which employ | adopted the conventional post-skin pasting method.

  Embodiments of a method for molding a laminated molded product and a molding apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. 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 9 show an embodiment of the present invention. FIG. 1 is a front view showing an automobile door trim manufactured by applying the method of the present invention, and FIG. 2 is a cross-sectional view showing the configuration of the automobile door trim. FIG. 3 is an explanatory view showing an outline of the method of the present invention, FIGS. 4 to 8 are explanatory views showing respective steps of the method of the present invention, and FIG. 9 is an explanatory view showing a modification of the molding apparatus according to the present invention.

  1 and 2, an automobile door trim 10 manufactured by applying the method for forming a laminated molded product according to the present invention is molded into a desired curved surface shape, and has a shape retaining property and a mounting rigidity to a door panel. The core material 20 and the skin 30 affixed to the surface of the resin core material 20 are roughly configured. Various functional parts are attached to the door trim 10. For example, the inside handle unit 11 is attached slightly to the front part of the middle part, the pull handle unit 13 and the power window switch unit 14 are attached to the upper surface of the armrest 12 that bulges to the indoor side of the surface, and equipment is provided below the armrest 12. A door pocket 15 that can be accommodated, and a speaker grill 16 that is integral with or separate from the door trim 10 on the front side thereof.

  In this embodiment, a material in which talc is mixed with polypropylene resin is used as the resin core material 20, but as usable resin materials, polyethylene resin, polypropylene resin, polystyrene resin, polyethylene terephthalate resin, Examples include polyvinyl alcohol resins, vinyl chloride resins, polyamide resins, polyacetal resins, polycarbonate resins, ionomer resins, acrylonitrile / butadiene / styrene (ABS) resins, and the like.

  Further, as the skin 30, a TPO sheet is used as the top layer 31, and a polypropylene foam is used as the cushion layer 32 lined on the back surface thereof. As the top layer 31, a vinyl chloride sheet, cloth, non-woven fabric is used. For example, polyethylene foam and polyurethane foam can be substituted for the fabric sheet and the cushion layer 32. The door trim 10 manufactured by applying the method of the present invention has a good surface texture of the skin 30, that is, the drawn pattern formed on the top layer 31 appears beautifully and the soft feeling of the cushion layer 32. There is provided a door trim 10 that realizes excellent cushioning performance utilizing the above.

  Thus, in order to keep the surface texture and soft feeling of the skin 30 well, as described later, the method of the present invention employs a post-pasting method of the skin 30 instead of the insert injection method. And when this invention method employ | adopts the post-pasting processing method of the skin 30, it is the characteristics that the structure of the shaping | molding apparatus 40 can be simplified and an adhesive agent is unnecessary. FIG. 3 shows an outline of a molding apparatus 40 used in the method of the present invention. The configuration of the molding apparatus 40 and the outline of the method of the present invention using the molding apparatus 40 will be described based on FIG. In the molding apparatus 40 used in the method of the present invention, the first molding die 50 is disposed on the first stage A for molding the resin core material 20, and the second for molding the skin 30. On stage B, a second molding die 60 is arranged.

  First, the structure of the 1st shaping | molding die 50 used when shape | molding the resin core material 20 is demonstrated. In the first molding die 50, an upper die 52 is connected to a first press machine 51, and the upper die 52 moves up and down a predetermined stroke by driving the first press machine 51. In addition, a lower mold 53 that is clamped and opened by a matched die method is provided with the upper mold 52, and the lower mold 53 reciprocates with respect to the stationary platen 41 in the direction of the arrow in FIG. It is fixed to the upper surface of the.

  Accordingly, the upper die 52 is moved up and down by a predetermined stroke by the first press machine 51, and the lower die 53 is moved to the first stage A and the first stage according to the reciprocation of the movable table 42 while holding the resin core material 20. Reciprocates between the two stages B. Furthermore, the mold temperature of the upper mold 52 connected to the first press machine 51 is maintained at 90 ° C., and is maintained at a higher temperature than the mold temperature 40 ° C. of the lower mold 53, so that one surface of the resin core material 20 ( The skin facing surface) 20a is maintained in a softened state. Therefore, the residual heat of the resin core material 20 can be used effectively, and the resin core material 20 and the skin 30 can be welded and integrated without using an adhesive. The resin core material 20 is molded into a required shape along the cavity shape defined by the upper and lower molds 52 and 53. As the resin material supply system of the resin core material 20, an injection cylinder 54 is provided below. Connected to the mold 53.

  The molten resin M supplied from the injection cylinder 54 is injected and filled between the cavities between the upper and lower molds 52 and 53. At this time, the lower mold 53 is provided with a resin passage including a manifold 531 and a gate 532. Instead of the injection cylinder 54, when the upper and lower molds 52 and 53 are in the mold open state, a method of supplying the mold surface of the lower mold 53 through the injection nozzle of the molten resin M may be employed.

  Next, the configuration of the second molding die 60 in the second stage B will be described. The second molding die 60 is composed of an upper die 62 connected to a second press machine 61, and a lower die 63 that is clamped and opened by the matched die method with the upper die 62. The mold 63 is fixed to the upper surface of the movable table 42. Therefore, in order to form the skin 30 in the second stage B, the raw sheet S is heat-softened and then placed in the second molding die 60, and the upper and lower dies 62, 63 are clamped. The skin 30 can be easily formed into a required shape. In addition, when the lower mold 53 in the first stage A is transported to a position directly below the upper mold 62 of the second stage B by the reciprocating movement of the movable table 42, the lower mold 63 in the second molding die 60 is Retreats to a position where it does not interfere. Furthermore, the molded skin 30 is held in the upper mold 62 of the second molding die 60 so as to have a function of molding the skin 30 and a function of pressing the skin 30 to the surface of the resin core material 20. A vacuum suction mechanism 621 is provided. In this embodiment, a vacuum suction force is applied to the mold surface of the upper mold 62 from the vacuum suction pump, and the vacuum suction force is applied to the skin 30 to be held.

  Next, a method for forming the door trim 10 using the forming device 40 will be described in order based on FIGS. 4 to 8. First, FIG. 4 shows a molding process of the resin core material 20. In the first stage A, the first press machine 51 operates in the first molding die 50, and the upper mold 52 reaches the bottom dead center. The upper and lower molds 52 and 53 are clamped. Then, the molten resin M is supplied from the injection cylinder 54, and the molten resin M is injected and filled into the cavity between the upper and lower molds 52 and 53 through the manifold 531 and the gate 532 of the lower mold 53, and the resin core material 20 is required. Molded into a shape. At this time, the molten resin M supplied from the injection cylinder 54 is 200 ° C., but the mold temperature of the upper mold 52 is set to 90 ° C., and the mold temperature of the lower mold 53 is set to 40 ° C. The temperature of the 20 skin facing surfaces 20a is kept at 140 ° C., and the softened state is maintained.

  Next, FIG. 5 shows the molding process of the skin 30. When the upper and lower molds 62 and 63 in the second molding die 60 are in the mold open state in the second stage B, the raw sheet S of the skin 30 is shown. (TPO sheet + polypropylene foam laminated sheet material) is heated and softened, then placed in the second molding die 60, the second press machine 61 is driven, and the upper die 62 is moved. By descending to the bottom dead center, the skin 30 (consisting of the top layer 31 and the cushion layer 32) is drawn into a required shape. As described above, at the same time as the resin core 20 is molded in the first stage A shown in FIG. 4, the skin 30 is molded into a required shape in the second stage B shown in FIG.

  After that, as shown in FIG. 6, in the first stage A and the second stage B, the first press machine 51 of the first molding die 50 and the second press machine 61 of the second molding die 60, respectively. Is driven, and the first mold 50 and the second mold 60 are opened. At this time, in the first stage A, the molded resin core 20 is held on the lower mold 53, and in the second stage B, the molded skin 30 is moved upward by the suction action of the vacuum suction mechanism 621. The mold 62 is held.

  Thereafter, as shown in FIG. 7, the movable table 42 provided on the fixed platen 41 slides in the direction of the arrow, and the lower mold 53 in the first molding die 50 is conveyed to the second stage B. That is, the lower mold 53 in the first molding die 50 stops at a position immediately below the upper mold 62 in the second molding die 60. Therefore, in this state, the resin core material 20 and the skin 30 are properly positioned.

  Then, when the lower mold 53 in the first molding die 50 is conveyed to the second stage B, the second press machine 61 is driven as shown in FIG. The upper mold 62 of the second molding die 60 is clamped with respect to the lower mold 53, and the skin 30 is pressure-bonded to the surface of the resin core material 20. At this time, since the skin facing surface 20a in the resin core material 20 is in a softened state at about 140 ° C., the cushion layer 32 in the skin 30 is melted and applied to the surface of the resin core material 20 without using an adhesive. The skin 30 can be welded and integrated.

  When the molding is completed, the second press machine 61 is raised in the second stage B, and the mold opening is performed. Therefore, after the door trim 10 is removed from the mold, the movable table 42 may slide to return to the position shown in FIG.

  Thus, according to the method of the present invention, the lower mold 53 of the first molding mold 50 for molding the resin core material 20 and the upper mold 62 in the second molding mold 60 for molding the skin 30 are bonded to the crimping mold. Therefore, the conventionally used crimping mold for the resin core material 20 and the skin 30 can be eliminated. In addition, since the skin 30 is welded and integrated using the residual heat of the resin core material 20, the adhesive application process and the drying process can be abolished, resulting in a significant cost reduction due to simplification of equipment and reduction of man-hours. In addition, since no adhesive is required, there is an advantage that the equipment can be simplified and the working environment can be well maintained by eliminating the exhaust and ventilation equipment.

  Next, FIG. 9 shows a modification of the present invention, and shows a molding apparatus 40 for using a resin sheet material as a material of the resin core material 20. In the modification shown in FIG. 9, the configuration of the first molding die 50 in the first stage is partly changed, but all other parts are the same, so only the changed points will be described.

  The first mold 50 is set at a higher temperature than the mold temperature 40 ° C. of the lower mold 53 such that the upper mold 52 is connected to the first press 51 and the mold temperature of the upper mold 52 is 90 ° C. The lower die 53 uses the resin sheet material S1 that has been heat-softened as a raw material, but the lower die 53 is not provided with resin passages such as manifolds and gates. The upper and lower dies 52, 53 in the first molding die 50 are press dies having a pressing function in which the upper die 52 is maintained at a high temperature. In this modification, a resin sheet material S1 obtained by extruding a thermoplastic resin into a sheet shape by a T-die extruder to form the resin core material 20 is used as a material, and the resin sheet material S1 is heated and softened. After the processing, the first molding die 50 is put into the mold in the mold open state. However, in the above-described embodiment, an accurate alignment mechanism between the lower mold 53 and the injection cylinder 54 is required. However, since the resin sheet material S1 is used in this modification, the alignment mechanism of the above-described embodiment can be omitted, and the cost can be reduced. Also in this modified example, the resin core material 20 is molded with the first molding die 50, the skin 30 is molded with the second molding die 60 in the second stage B, and the upper molds 52 and 62 are formed. After raising and opening the mold, the movable table 42 is operated to use the lower mold 53 in the first molding die 50 and the upper mold 62 in the second molding die 60 to use the resin core 20 and the skin. 30 is the same as the step of pressure-bonding and integration, and as in the above-described embodiment, the equipment can be simplified and an adhesive is not required, so a significant cost reduction can be expected.

  In the present embodiment, the method is applied to the molding method of the door trim 10 in which the skin 30 is pasted and integrated on the surface of the resin core 20, but the skin 30 is pasted on the surface of the resin core 20 as well as automobile interior parts other than the door trim 10. It can be applied to all laminated molded products. Further, as a mechanism for supplying the material of the resin core material 20 to the first molding die 50 in the first stage A, in addition to the injection cylinder 54, an injection cylinder for molding press molding or a resin sheet material type is used. The material supply form of the resin core material 20 such as application can be arbitrarily selected.

DESCRIPTION OF SYMBOLS 10 Door trim for automobiles 20 Resin core material 20a Skin facing surface 30 Skin 31 Top layer 32 Cushion layer 40 Molding device 41 Fixing plate 42 Movable table 50 First molding die 51 First press machine 52 Upper die 53 Lower die 531 Manifold 532 Gate 54 Injection cylinder 60 Second molding die 61 Second press machine 62 Upper die 621 Vacuum suction mechanism 63 Lower die A First stage B Second stage M Molten resin S Original fabric sheet S1 Resin sheet material

Claims (2)

In the molding method of the resin core material (20) molded into a required shape and the laminated molded product (10) formed by attaching the skin (30) to the surface of the resin core material (20),
Resin material (M, S1) is supplied into the cavities of the upper and lower molds (52, 53) in the first molding die (50) arranged in the first stage (A), and the resin core material is formed along the cavity shape. Resin that keeps the skin facing surface (20a) in a softened state by molding (20) into the required shape and setting the mold temperature of the upper mold (52) higher than the mold temperature of the lower mold (53) A molding step of the core material (20);
The raw sheet (S) is supplied into the cavities of the upper and lower molds (62, 63) in the second molding die (60) arranged on the second stage (B), and the skin (30) is formed along the cavity shape. Forming the skin (30) into a required shape;
The upper and lower molds (52, 53) of the first molding die (50) in the first stage (A) are opened, and then the resin core (20) is held on the lower mold (53), The upper and lower molds (62, 63) of the second molding mold (60) in two stages (B) are opened, and then the first molding mold is held with the skin (30) held by the upper mold (62). The lower mold (53) in the mold (50) is slid, and the lower mold (53) in the first molding mold (50) is placed immediately below the upper mold (62) in the second molding mold (60). A positioning step of positioning molds (50, 60);
Resin core material held on the lower die (53) of the first molding die (50) by lowering the upper die (62) of the second molding die (60) in the second stage (B) Resin core in which the skin (30) is pressure-bonded to the softened skin facing surface (20a) of (20), and the skin (30) is attached to the surface of the resin core material (20) without using an adhesive. Crimping process of the skin (30) against the material (20);
A method for forming a laminated molded product, comprising: In the molding device (40) of the laminated molded product (10) formed by attaching the skin (30) to the surface of the resin core (20) molded into the required shape,
In the first stage (A) for molding the resin core material (20), a first molding die (50) is disposed and the skin (30) is molded, while the skin (30) is molded into the resin core. A second molding die (60) is disposed on the second stage (B) for performing two types of processing to be applied on the surface of the material (20), and the first molding die (50). The upper die (52) is connected to the first press machine (51), is supported so as to be movable up and down for a predetermined stroke, and softens the skin facing surface (20a) of the resin core material (20). The mold temperature of the mold (52) is set higher than the mold temperature of the lower mold (53), and the upper mold (62) of the second molding die (60) is the second press machine (61). And the stroke is different between the forming process of the skin (30) and the attaching process of the skin (30). The lower mold (53) of the first molding die (50) and the lower mold (63) of the second molding die (60) are fixed on the movable table (42). The movable table (42) reciprocates between the first stage (A) and the second stage (B), and the lower mold (53) in the first mold (50) is the second mold (60). A molding apparatus for a laminated molded product characterized in that it can be positioned at a position directly below the upper die (62).

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