Patent Publication Number: US-9427931-B2

Title: Production apparatus of skin-fitted foam molding member, production method of skin-fitted foam molding member, and skin-fitted foam molding member

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a divisional of Ser. No. 13/132,445 filed on Jun. 2, 2011, which is a national stage application of International Application No. PCT/JP2009/067997 filed on Oct. 19, 2009, which is based upon and claims the benefit of priority from Japanese Patent Application No. 2008-309028 filed on Dec. 3, 2008, the entire contents of all are incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present invention relates to a production apparatus of a skin-fitted foam molding member, a production method of the skin-fitted foam molding member, and the skin-fitted foam molding member. 
     BACKGROUND ART 
     With respect to internal components used for vehicles, at home and the like, skin-fitted foam molding members having three layer structure including skin layer—foam body layer—core material layer are used in many occasions. The skin-fitted foam molding member constitutes a molded article by filling a foam body between a core material and a skin which are disposed in a forming mold and then integrating them. For preventing the foam body from leaking from between the skin and the core material in the production of the skin-fitted foam molding member (refer to Patent Literature 1), a seal portion is formed. 
     CITATION LIST 
     Patent Literature 
     
         
         Patent Literature 1: Japanese Patent Application Laid-Open No 2001-145926 
       
    
     SUMMARY OF INVENTION 
     Technical Problem 
     With respect to the seal portion of the Patent Literature 1, an end face of an end portion of the core material is exposed to the outside of a molded article. In the case of such seal portion, an external view quality as a molded article is degraded unless the seal portion is disposed in a hidden position which is not visible from a user who uses the molded article. Thus, restriction of the position for forming the seal portion, as the case may be, limits freedom of the shape as a molded article. 
     The present invention relates to a production technology of a skin-fitted foam molding member having a 3-layer structure including a core material, a skin and a foam body. It is an object of the present invention to provide a production apparatus and a production method of the skin-fitted foam molding member provided with a seal portion which does not degrade an external view quality. Moreover, it is another object of the present invention to provide the skin-fitted foam molding member provided with the seal portion which does not degrade the external view quality. 
     Solution to Problem 
     The present invention relates to a production apparatus of a skin-fitted foam molding member, including: a first mold having a mold face, an external surface of a core material being so disposed as to face the mold face of the first mold; a second mold having a mold face and so disposed as to open and close relative to the first mold, an external surface of a skin which has a roll portion bendably formed being so disposed as to face the mold face of the second mold; a bender for bending, in a state that the first mold and the second mold are closed, the roll portion to allow the roll portion to face an external surface of an end portion of the core material; a welder for forming a seal portion which prevents a leak of a foam body filled between an internal surface of the core material and an internal surface of the skin, the preventing operation of the leak of the foam body being implemented by welding the end portion of the core material with the roll portion; and a filler for filling the foam body to between the internal surface of the core material and the internal surface of the skin, wherein the skin has a rib portion which is so formed as to protrude from the internal surface of the skin toward the core material and which faces an internal surface of the end portion of the core material, and the rib portion forms an inward seal portion by sandwiching the end portion of the core material between the roll portion and the rib portion by dint of a foaming pressure of the foam body. 
     Moreover, the present invention relates to a method of producing a skin-fitted foam molding member, the method including: disposing, in a state that a first mold and a second mold which open and close relative to each other are opened, an external surface of a core material such that the external surface of the core material faces a mold face of the first mold; disposing an external surface of a skin having a roll portion bendably formed such that the external surface of the skin faces a mold face of the second mold; closing the first mold and the second mold; bending the roll portion such that the roll portion faces an external surface of an end portion of the core material; forming a seal portion which prevents a leak of a foam body filled between an internal surface of the core material and an internal surface of the skin, the preventing operation of the leak of the foam body being implemented by welding the end portion of the core material with the roll portion; and filling the foam body to between the internal surface of the core material and the internal surface of the skin, wherein the method further comprising: disposing, when the first mold and the second mold are closed, a rib portion so formed as to protrude from the internal surface of the skin toward the core material such that the rib portion faces an internal surface of the end portion of the core material, and forming an inward seal portion by sandwiching the end portion of the core material between the rib portion and the roll portion by dint of a foaming pressure of the foam body. 
     Moreover, the present invention relates to a skin-fitted foam molding member including: a core material; a skin having a roll portion; a foam body filled between an internal surface of the core material and an internal surface of the skin; and a seal portion which prevents a leak of the foam body, wherein the seal portion is formed by welding an external surface of an end portion of the core material with the roll portion which is so bent as to face the external surface of the end portion of the core material, and the skin has a rib portion which is so formed as to protrude from the internal surface of the skin toward the core material and which faces an internal surface of the end portion of the core material, where the rib portion forms an inward seal portion by sandwiching the end portion of the core material between the roll portion and the rib portion by dint of a foaming pressure of the foam body. 
     Advantageous Effects of Invention 
     With the production apparatus and production method of the skin-fitted foam molding member of the present invention, forming the welding seal portion by welding the end portion of the core material with the skin&#39;s roll portion which faces the external surface of the end portion of the core material can form a seal portion which does not degrade the external view quality of the skin-fitted foam molding member, and the skin-fitted foam molding member provided with the seal portion which does not degrade the external view quality can be provided. 
     Moreover, with the production apparatus and production method of the skin-fitted foam molding member of the present invention, the roll portion of the skin is fixed to the external surface of the core material, to thereby improve the external view quality. Moreover, the double seal structure of the rib portion and roll portion can improve sealability against leak of the foam body. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a cross sectional view for simply showing a production apparatus of a skin-fitted foam molding member, according to an embodiment of the present invention. 
         FIG. 2  is a plan view showing a structure of the production apparatus together with a first mold. 
         FIG. 3(A)  and  FIG. 3(B)  are cross sectional views for explaining a method of molding a skin. 
         FIG. 4(A)  and  FIG. 4(B)  are cross sectional views for explaining a method of molding the skin. 
         FIG. 5(A)  and  FIG. 5(B)  are cross sectional views (with a seal portion shown enlarged) for explaining a method of producing a skin-fitted foam molding member, according to the embodiment. 
         FIG. 6(A)  and  FIG. 6(B)  are cross sectional views (with the seal portion shown enlarged) for explaining the method of producing a skin-fitted foam molding member, according to the embodiment. 
         FIG. 7  is an external view of the skin-fitted foam molding member. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Embodiments 
     Hereinafter, an embodiment of the present invention is to be set forth referring to drawings. 
       FIG. 1  is a cross sectional view simply showing a production apparatus  100  of a skin-fitted foam molding member according to the embodiment of the present invention,  FIG. 2  is a plan view showing the structure of the production apparatus  100  together with a lower mold  112 ,  FIG. 3(A) ,  FIG. 3(B) ,  FIG. 4(A)  and  FIG. 4(B)  are cross sectional views for explaining a method of molding a skin  150 ,  FIG. 5(A) ,  FIG. 5(B) ,  FIG. 6(A)  and  FIG. 6(B)  are cross sectional views (with a welding seal portion  200  shown enlarged) for explaining a method of producing a skin-fitted foam molding member  300  according to the embodiment, and  FIG. 7  is an external view of the skin-fitted foam molding member  300 . 
     Structure 
     Referring to  FIG. 1  and  FIG. 2 , the structure of the production apparatus  100  of the skin-fitted foam molding member  300  (refer to after-described  FIG. 7 ) is to be set forth. 
     To give an outline, a production apparatus of a skin-fitted foam molding member, includes: an upper mold (corresponding to a first mold) having a mold face, an external surface of a core material being so disposed as to face the mold face of the upper mold; a lower mold (corresponding to a second mold) having a mold face and so disposed as to open and close relative to the upper mold, an external surface of a skin having a roll portion bendably formed being so disposed as to face the mold face of the lower mold; a bender for bending, in a state that the upper mold and the lower mold are closed, the roll portion to allow the roll portion to face an external surface of an end portion of the core material; a welder for forming a welding seal portion (corresponding to a seal portion) which prevents a leak of a foam body filled between an internal surface of the core material and an internal surface of the skin, the preventing operation of the leak of the foam body being implemented by welding the end portion of the core material with the roll portion; and a filler for filling the foam body to between the internal surface of the core material and the internal surface of the skin, wherein the skin has a rib portion which is so formed as to protrude from the internal surface of the skin toward the core material and which faces an internal surface of the end portion of the core material, and the rib portion forms an inward seal portion by sandwiching the end portion of the core material between the roll portion and the rib portion by dint of a foaming pressure of the foam body. 
     According to the embodiment, the production apparatus  100  of the skin-fitted foam molding member of the present invention is applied to an injection molder which implements molding by injecting a foam body  180  to between a core material  140  and a skin  150  which are disposed in a forming mold  110 . As the skin-fitted foam molding member  300 , a vehicular internal component having a 3-layer structure of skin  150 —foam body  180 —core material  140  is molded (refer to  FIG. 7 ). Hereinafter, the embodiment is to be set forth in detail. 
     Referring to  FIG. 1  and  FIG. 2 , the production apparatus  100  of the skin-fitted foam molding member has the forming mold  110  including an upper mold  111  and a lower mold  112 . The upper mold  111  has a mold face  115  which conforms to the shape of an external surface  142  of the core material  140 , while the lower mold  112  has a mold face  116  which conforms to the shape of an external surface  152  of the skin  150 . Between an internal surface  141  of the core material  140  and an internal surface  151  of the skin  150 , a filling space  170  for filling a foam body  180  is formed by closing the upper mold  111  and the lower mold  112 . 
     A receiver space  220  for receiving a welder  130  and a bender  120  is formed between the upper mold  111  and the lower mold  112 . Integrating the welder  130  with the bender  120  by connecting the two members  130 ,  120  and disposing the welder  130  and the bender  120  in the receiver space  220  miniaturize the production apparatus  100 . In  FIG. 1  and  FIG. 2 , the welder  130  and the bender  120  are disposed on the lower mold  112  in the receiver space  220 . 
     The skin  150  has a rib portion  156  so formed as to protrude from the internal surface  151  toward the core material  140 . The rib portion  156  is so disposed as to face an internal surface  146  of an end portion  145  of the core material  140 . Between the rib portion  156  and a roll portion  155 , the end portion  145  of the core material  140  is sandwiched by dint of a foaming pressure of the foam body  180 , to thereby allow the rib portion  156  to form an inward seal portion  210  {refer to  FIG. 6(B) }. The inward seal portion  210  prevents the foam body  180  from leaking out of the inside of the filling space  170 . 
     Through the injection molding, the roll portion  155  and the rib portion  156  are formed in advance at the skin  150  {refer to  FIG. 3(A) ,  FIG. 3(B) ,  FIG. 4(A)  and  FIG. 4(B) }. In the examples in the above drawings, the roll portion  155  and the rib portion  156  are formed at the skin  150 &#39;s end portion on a side for forming the welding seal portion  200 . 
     A position P at which the end portion  145  of the core material  140  abuts on the skin  150  is defined as a base point. At the position P, the roll portion  155  of the skin  150  is bent. An end face  148  of the end portion  145  of the core material  140  is formed in a shape conforming to the shape of the internal surface  151  of the skin  150 . This is for preventing the skin  150  from being uplifted at the position P as the bending base point, and thereby improving sealability {refer to  FIG. 6(A) }. 
     Referring to  FIG. 2 , the bender  120  has a support portion  121  for supporting the roll portion  155  and a driving portion  124  for moving the support portion  121  forward and backward relative to an external surface  147 . The bender  120  further has a slide base  122  which is so formed as to move forward and backward relative to the forming mold  110 . The slide base  122  connects the support portion  121  with the driving portion  124 . 
     The driving portion  124  reciprocates a rod  125  to thereby move the slide base  122  forward and backward. According to the forward-backward movement of the slide base  122 , the support portion  121  and the welder  130  which is coupled with the slide base  122  move forward and backward relative to the external surface  147 . One driving portion  124  can move the bender  120  and welder  130  forward and backward, so that the facility investment cost can be reduced. In  FIG. 2 , an ordinary fluid pressure cylinder fitted with a reciprocating mechanism is used for the driving portion  124 . 
     According to the forward movement of the slide base  122 , the support portion  121  pushes the roll portion  155  to the external surface  147 . This pushing operation bends the roll portion  155  with the position P (on which the end portion  145  of the core material  140  abuts) as a base point. The thus bent roll portion  155  is bought into such a state as to abut on and face the external surface  147  {refer to  FIG. 6(A) }. 
     The slide base  122  is provided with a snap portion  123  for preventing a pushing force from being excessively applied to the end portion  145  of the core material  140 . A compressive coil is used for the snap portion  123 . 
     The shape of the end face of the head end portion of the support portion  121  is formed into a curve shape conforming to an external shape of the end portion  145  of the core material  140 . This is because forming into the curve shape can smoothen the operation of bending the roll portion  155  and can prevent the roll portion  155  from being uplifted from the external surface  147  {refer to  FIG. 6(A) }. 
     Referring to  FIG. 2 , the welder  130  has an arm portion  131  mounted to a slide piece  133  connected to the slide base  122 , and a horn portion  132  for welding the end portion  145  (of the core material  140 ) with the roll portion  155  (of the skin  150 ) by applying a vibration from a head end. The horn portion  132  is formed into a rectangle shape corresponding to the shape of the welding seal portion  200  and a welding range. 
     The horn portion  132  applies the vibration (caused by a vibration generator  134 ) to the roll portion  155  and heats the roll portion  155 . The thus heated roll portion  155  melts. The thus melted roll portion  155  is cooled, to thereby welding-fix the roll portion  155  to the external surface  147  by welding {refer to  FIG. 6(A) }. 
     A filler  160  is provided with a holding portion  161  for holding the foam body  180  and a nozzle portion  162  for filling the foam body  180  in the filling space  170 . Through a gate portion formed at the lower mold  112 , the filler  160  injects the foam body  180  into the filling space  170 . An ordinary injector for injecting a mold material is used for the filler  160 . 
     Molding Method 
     Next, a method of molding the skin  150  having the roll portion  155  and the rib portion  156  is to be set forth. 
     Referring to  FIG. 3(A) , a special forming mold  400  for molding the skin  150  has a cavity mold  410  and a core mold  420 . At first, the cavity mold  410  and the core mold  420  are closed. 
     Referring to  FIG. 3(B) , closing the core mold  420  forms a cavity  440  (shaped along the shapes of the roll portion  155  and the rib portion  156 ) in the special forming mold  400 . A melted resin material  430  is flowed into the cavity  440 . 
     Referring to  FIG. 4(A) , after the resin material  430  is cooled, the special forming mold  400  is opened. 
     Referring to  FIG. 4(B) , the skin  150  is taken out. Use of the special forming mold  400  can form the skin  150  which has a body portion  158 , and the roll portion  155  and the rib portion  156  which are each formed to be branching from the body portion  158 . The roll portion  155  and the rib portion  156  are formed bendably with a bending portion  157  as a base point. As set forth above, welding-fixing the roll portion  155  to the end portion  145  of the core material  140  forms the welding seal portion  200 . Sandwiching the end portion  145  of the core material  140  between the rib portion  156  and the roll portion  155  allows the rib portion  156  to form the inward seal portion  210  {refer to  FIG. 6(B) }. Use of the special forming mold  400  can form the body portion  158  having a thickness, for example, about 1 mm. 
     Production Method 
     Next, a method of producing the skin-fitted foam molding member  300  is to be set forth. 
     Process of Disposing Core Material  140   
     Referring to  FIG. 5(A) , as a state of the forming mold  110  opened, the external surface  142  of the core material  140  is so disposed as to face the mold face  115  of the upper mold  111 . 
     Process of Disposing Skin  150   
     Meanwhile, the external surface  152  of the skin  150  is so disposed as to face the mold face  116  of the lower mold  112 . 
     While the roll portion  155  and the rib portion  156  are prevented from falling toward the mold face  116  side, the roll portion  155  is so disposed as to rise from the lower mold  112  toward the upper mold  111 . The rib portion  156  is inclined relative to the roll portion  155  and is so disposed as to face the internal surface  141  of the core material  140 . 
     Process of Closing Forming Mold  110   
     Referring to  FIG. 5(B) , the upper mold  111  and lower mold  112  are closed, to thereby form the filling space  170  for filling the foam body  180  between the internal surface  141  of the core material  140  and the internal surface  151  of the skin  150 . 
     When the forming mold  110  is to be closed, the rib portion  156  is so disposed as to face the internal surface  146 . This is for forming the inward seal portion  210  by sandwiching the end portion  145  of the core material  140  between the rib portion  156  and the roll portion  155  by dint of the foaming pressure of the foam body  180  {refer to  FIG. 6(B) }. 
     Since the end face  148  is formed in a shape conforming to the shape of the internal surface  151  of the skin  150 , the skin  150  can be prevented from being uplifted at the position P as the bending base point. The welder  130  and the bender  120  are received and disposed in the receiver space  220  formed between the upper mold  111  and the lower mold  112 . 
     Process of Bending Roll Portion  155   
     Referring to  FIG. 6(A) , the roll portion  155  is bent to allow the roll portion  155  to face the external surface  147 . 
     Referring to  FIG. 2 , the driving portion  124  moves the slide piece  133  forward via the rod  125 . According to the forward movement of the slide piece  133 , the support portion  121  moves forward. The support portion  121  pushes the roll portion  155  to the external surface  147 . With the position P on which the end portion  145  of the core material  140  abuts as a base point, the above pushing operation bends the roll portion  155 . 
     The thus bent roll portion  155  faces to and abuts on the external surface  147 . The simple forward movement of the support portion  121  can bend the roll portion  155  to simplify the bending operation of the roll portion  155 . 
     In conjunction with the movement of the support portion  121 , the welder  130  moves toward the end portion  145  of the core material  140 . The horn portion  132  of the welder  130  is disposed around the position where the end portion  145  of the core material  140  abuts on the roll portion  155 . 
     Welding Process 
     Welding the end portion  145  of the core material  140  with the roll portion  155  which is disposed to face the external surface  147  forms the welding seal portion  200 . 
     The welder  130  heats the roll portion  155 , to thereby weld and fix the roll portion  155  to the external surface  147 . The thus welded and fixed portion functions as the welding seal portion  200 . 
     Covering the end face  148  with the roll portion  155  can form the welding seal portion  200 , to thereby prevent the end face  148  from being exposed outside. Thus, the welding seal portion  200  which does not degrade an external view quality as a molded article can be formed. 
     Filling Process 
     Referring to  FIG. 6(B) , the foam body  180  is filled into the filling space  170  formed between the internal surface  141  of the core material  140  and the internal surface  151  of the skin  150 . 
     The foam body  180  is foamed in the filling space  170 , and gradually fills the filling space  170 . 
     The welding seal portion  200  prevents the foam body  180  from leaking from the outside of the filling space  170 . Meanwhile, the rib portion  156  forms the inward seal portion  210  by sandwiching the end portion  145  of the core material  140  between the roll portion  155  and the rib portion  156  by dint of the foaming pressure of the foam body  180 . 
     The inward seal portion  210  prevents the foam body  180  from leaking out of the inside of the filling space  170 . Therefore, leak of the foam body  180  from the filling space  170  can be further prevented. 
     The driving portion  124  ( FIG. 2 ) moves the bender  120  and the welder  130  backward and then opens the forming mold  110 , to thereby take out the skin-fitted foam molding member  300  which is an integration of the core material  140 , the skin  150  and the foam body  180 . The skin-fitted foam molding member  300  in which the welding seal portion  200  and the inward seal portion  210  prevent the foam body  180  from leaking and the external view quality as a molded article is prevented from being degraded can be formed. 
     In the process of the production operation of the skin-fitted foam molding member  300 , the roll portion  155  formed at the skin  150  in advance is welded-fixed to the end portion  145  of the core material  140 , to thereby form the welding seal portion  200 . 
     Use of the bender  130  and the welder  120  can form the welding seal portion  200  through a simple operation of welding-fixing the roll portion  155  by bending the roll portion  155 . It is not necessary to perform the operation of forming the welding seal portion  200  separately from the operation of producing the skin-fitted foam molding member  300 , thus lowering of the efficiency of the production operation of the skin-fitted foam molding member  300  can be prevented. 
     Referring to  FIG. 7 , the thus molded skin-fitted foam molding member  300  is applicable to automobile internal components. The skin-fitted foam molding member  300  in  FIG. 7  is a structural member of a glove compartment installed in the vehicle. The welding seal portion  200  prevents the end face  148  from being exposed outside, thus preventing degrading of the glove compartment&#39;s design as a product. 
     Herein, characteristics of the skin-fitted foam molding member  300  as a product are to be set forth. 
     Referring to  FIG. 4(A) ,  FIG. 4(B) ,  FIG. 5(A) ,  FIG. 5(B) ,  FIG. 6(A)  and  FIG. 6(B) , the roll portion  155  is longer than the rib portion  156 . The longer the roll portion  155  is, the more easily the roll portion  155  is bent, thus making it easier to weld the roll portion  155  to the core material  140 . Meanwhile, in an operation of combining the core material  140  with the skin  150 , the shorter the rib portion  156  is, the more easily the rib portion  156  is prevented from being caught by the core material  140 . The roll portion  155  which is made longer than the rib portion  156  can satisfy the above two. 
     Referring to  FIG. 5(A) ,  FIG. 5(B) ,  FIG. 6(A)  and  FIG. 6(B) , the internal surface  141  of the end face  148  of the end portion  145  of the core material  140  has a protruding slope face. In an operation of combining the core material  140  with the skin  150 , the protruding slop face works to more smoothly insert the core material  140  between the roll portion  155  of the skin  150  and the rib portion  156  of the skin  150 . 
     Referring to  FIG. 5(A) ,  FIG. 5(B) ,  FIG. 6(A)  and  FIG. 6(B) , the welding seal portion  200  is disposed adjacent to a tip end  155 A of the roll portion  155 . That is, maximizing the length from the bending base point P of the roll portion  155  to the welding seal portion  200  can implement an efficient welding with a shorter welding allowance. Moreover, when the skin-fitted foam molding member  300  is applied to a door of the glove compartment, the welding seal portion  200  can be disposed in a place which is less visible. 
     As set forth above, with respect to the production apparatus  100  of the skin-fitted foam molding member according to the embodiment, welding the core material  140  with the skin  150 &#39;s roll portion  155  which faces the external surface  147  of the end portion  145  of the core material  140  can form the welding seal portion  200 . Covering the end face  148  of the end portion  145  of the core material  140  with the roll portion  155  can form the welding seal portion  200 , to thereby prevent the end face  148  from being exposed outside. Thus, the welding seal portion  200  which does not degrade the external view quality as a molded article can be formed. 
     Sandwiching the end portion  145  between the rib portion  156  and the roll portion  155  by dint of the foaming pressure of the foam body  180  can form the inward seal portion  210 . This can further prevent the leak of the foam body  180  out of the filling space  170 . 
     Operating the driving portion  124  moves the support portion  121  forward and backward. The simple forward movement of the support portion  121  can bend the roll portion  155  such that the roll portion  155  faces the external surface  147 . Thus, the operation of bending the roll portion  155  can be simplified. 
     The end face  148  of the end portion  145  of the core material  140  is formed in a shape conforming to the shape of the internal surface  151  of the skin  150 , thus the skin  150  can be prevented from being uplifted at the position P as a bending base point. 
     The receiver space  220  for receiving the welder  130  and the bender  120  is formed between the upper mold  111  and the lower mold  112 . Thus, the production apparatus  100  can be miniaturized. 
     The skin-fitted foam molding member  300  can be provided which has the welding seal portion  200  formed by welding the external surface  147  with the roll portion  155  which is so bend as to face the external surface  147 . The welding seal portion  200  prevents a leak of the foam body  180  and thereby forming of the welding seal portion  200  can prevent a degradation of the external view quality as a molded article. 
     The present invention is not limited to the above embodiment and can be properly modified. 
     According to the embodiment, the welding seal portion  200  and the inward seal portion  210  are formed, however, the leak of the foam body  180  may be prevented only by the welding seal portion  200 . 
     The structure of the production apparatus  100  is not limited to that disclosed in the embodiment, otherwise, for example, disposing a plurality of welders  130 , disposing a plurality of benders  120  and disposing the welder  130  and the bender  120  in the upper mold  111  are allowed. 
     A known welder capable of welding the core material  140  with the skin  150  such as a vibration welder and an ultrasonic welder may be properly selected for the welder  130 . 
     The shapes of the rib portion  156  and the roll portion  155  of the skin  150 , and the shape of the end portion  145  of the core material  140  are not limited to those shown in the drawings, and can be properly changed according to the shape of a molded face or the shape of a molded article. 
     The method of forming the skin  150  is not limited to the injection molding method using the special forming mold  400 , and another molding method capable of forming the rib portion  156  and the roll portion  155  at the skin  150  can be adopted. 
     The position for forming the welding seal portion  200  is not limited to the portion denoted in the skin-fitted foam molding member  300  according to the embodiment. Moreover, the welding seal portions  200  can be formed in a plurality of portions in one skin-fitted foam molding member  300 . 
     The skin-fitted foam molding member  300  is applicable to articles other than the automobile internal components shown in the embodiment. For example, the skin-fitted foam molding member  300  is applicable to internal components such as home commodities which require preventing degrading of a design as a product. 
     The production apparatus  100  and production method of the skin-fitted foam molding member according to the embodiment are not used only to the injection molding and can be widely applied to a molding method and a molding apparatus which have such an object as to provide the skin-fitted foam molding member  300  formed by filling the foam body  180  in the space formed between the core material  140  and the skin  150  in a state in which the forming mold  110  is closed and then integrating the core material  140 , the skin  150  and the foam body  180 . 
     The entire contents of the Japanese Patent Application No. 2008-309028 (filed on Dec. 3, 2008) are incorporated herein by reference, in order to take protection against erroneous translations or omitted portions. 
     The contents of the prevent invention have been set forth according to the embodiment, however, the present invention is not limited to the above descriptions. It is obvious to a person skilled in the art that various modifications and improvements are allowed. 
     INDUSTRIAL APPLICABILITY 
     With the production apparatus and the production method of the skin-fitted foam molding member of the present invention, welding the end portion of the core material with the skin&#39;s roll portion which faces the external surface of the end portion of the core material to thereby form the seal portion can form the seal portion which does not degrade an external view quality of the skin-fitted foam molding member. Moreover, the skin-fitted foam molding member provided with the seal portion which does not degrade an external view quality can be provided. 
     Moreover, with the production apparatus and the production method of the skin-fitted foam molding member of the present invention, the roll portion of the skin is fixed to the external surface of the core material, to thereby improve the external view quality. Moreover, the double seal structure of the rib portion and the roll portion can improve sealability against a leak of the foam body.