JP2008238428A - Manufacturing method for molding with skin material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate necessity for preparing a mold at every shape of a molded product and to dispense with troublesome work for trimming. <P>SOLUTION: The bonding part 12 and non-bonding part 13 to a base material 20 are provided on a skin material 11, a breaking fragile part 14 is provided on the boundary position of the bonding part 12 and the non-bonding part 13, the skin material 11 is held to the non-bonding part 13 to be provided under tension so as to be brought into contact with or separated from the surface 39a of a cushioning body 39, the bonding part 12 of the skin material 11 is bonded to the surface 21 of the base material 20 under pressure by the elastic deformation of the cushioning body 39, the bonding part 12 of the skin material 11 is bonded to the surface 21 of the base material 20 by the adhesive 15 preliminarily provided on the base material 20 or the skin material 11 and the bonding part 12 of the skin material 11 is pressed to the surface 39a of the cushioning body 39 by the base material 20 to break the skin material 11 at the breaking fragile part 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing a molded article with a skin material in which the skin material is bonded to a base material.

  In automobile interior parts such as pillar garnishes and door trims, molded products with a skin material in which a skin material is bonded to a base material are frequently used.

  Conventional methods for manufacturing a molded article with a skin material include a manufacturing method using a mold and a manufacturing method using an elastically deformable cushion body.

  As a manufacturing method using a mold, a base material coated with a skin material and an adhesive is pressed with a lower mold and an upper mold, then the mold is opened and the end of the skin material is folded back to end the base material. There is a method of adhering to the back surface (see Patent Document 1).

  In addition, as a manufacturing method using an elastically deformable cushion body, the skin material is placed on the surface of the elastically deformable cushion body, and the skin material is pressed against the surface of the cushion body with a base material coated with an adhesive. There is a method in which the skin material is crimped along the surface of the base material by the elastic deformation of the cushion body by this pressing, and the skin material is folded back to the back side of the end portion of the base material and attached to the base material (Patent Document 2). reference).

  However, in the manufacturing method using a mold, it is necessary to make the mold surface of the mold on which the skin material is arranged in a shape that matches the molded product, so a mold is prepared for each shape of the molded product. Therefore, there is a problem in that the mold is expensive to manufacture and the manufacturing period is long. Furthermore, it is necessary to perform trimming of the skin material at a predetermined position after pressing, and there is a problem that labor is required.

  On the other hand, in the manufacturing method using the cushion body, although there is an advantage that it is not necessary to manufacture a mold for each molded product, the skin material is cut into a predetermined shape in advance and placed on the surface of the cushion body. Finally, the skin material must be trimmed, and when the skin material is cut in advance, there is a problem that the position of the skin material tends to shift when the skin material is pressed with the base material, and the trimming is finally performed against it. In some cases, there is a problem that it takes time to trim.

JP-A-2-121839 Japanese Patent Laid-Open No. 3-126526

  The present invention has been made in view of the above points, and it is not necessary to prepare a mold for each shape of the molded product, and prevents the displacement of the skin material when the skin material is adhered, and for trimming. It is an object of the present invention to provide a method for manufacturing a molded article with a skin material, which can eliminate the troublesome work.

  The invention of claim 1 is a method for producing a molded article with a skin material in which a skin material is adhered to a base material, wherein the skin material comprises an adhesive part to the base material and a non-adhesive part outside the adhesive part. And having a fragile portion for breaking at a boundary position between the sticking portion and the non-sticking portion, holding the skin material at the non-sticking portion, and arranging the skin material with the base material. The adhesive part is pressed against the surface of the cushion body that can be elastically deformed, the surface of the cushion body is pressed through the skin material, and the adhesive part of the skin material is pressed by the elastic deformation of the cushion body. And affixing the skin material on the surface of the base material with an adhesive provided in advance on the base material or the skin material. The skin material is broken at the fragile portion for breaking by pressing the wearing portion against the surface of the cushion body. And wherein the Rukoto.

  According to a second aspect of the present invention, in the first aspect, after the skin material is ruptured by the fragile portion for breaking, the end portion of the adhesive portion of the skin material is folded and bonded to the back surface of the end portion of the base material. It is characterized by that.

  A third aspect of the invention is characterized in that, in the first or second aspect, a protective sheet is laminated on the non-sticking portion of the disposed skin material.

  According to a fourth aspect of the present invention, in the first or second aspect, the cover material is provided with an adhesive on the entire back surface including the sticking portion and the non-sticking portion, and the protective sheet is peeled off while covering the adhesive. The protective sheet is cut at a boundary position between the sticking part and the non-sticking part, or is made fragile so as to be cut, and the protective sheet is attached when the skin material is disposed. It peels from the said skin material in the part of an attachment part, The said protective sheet is left about the said non-sticking part, It is characterized by the above-mentioned.

  According to invention of Claims 1-4, the non-adhesion part of an outer skin material is hold | maintained, the adhesion part of an outer skin material is pressed on the surface of the cushion body which can be elastically deformed with a base material, Due to the elastic deformation of the cushion body by pressing the cushion body, the adhesive part of the skin material is crimped along the surface of the base material, so there is no need to prepare a mold for each shape of the molded product, Furthermore, the skin material can be pressed onto the base material with an appropriate tension, and the skin material is broken at the fragile portion for breaking by pressing the skin material with the base material to separate the pasting part from the non-sticking part. Therefore, subsequent trimming of the skin material can be made unnecessary.

  Further, in the present invention, the skin material stretched in contact with or separated from the surface of the cushion body is laminated with a protective sheet on the non-adhered part, and the strength of the non-adhered part is increased or the elongation is suppressed. By adopting the above configuration, when the skin material sticking part is pressed against the surface of the cushion body with the base material and ruptured by the breaking weak part, the skin material is torn from the breaking weak part to the non-sticking part side. It is possible to prevent the breakage from being correctly broken at the position of the fragile portion for breakage, and to prevent subsequent trimming of the skin material.

  Furthermore, in the present invention, an adhesive is provided on the entire back surface of the skin material including the sticking part and the non-sticking part, and a protective sheet is laminated so as to cover the adhesive of the sticking part and the non-sticking part. The protective sheet is cut at the boundary position between the sticking part and the non-sticking part, or is made fragile so that it can be cut, and the protective sheet is attached to the part of the sticking part when the skin material is disposed. If the protective sheet is left on the non-adhered part, the adhesive must be applied to the skin material each time the skin material is placed in contact with or separated from the surface of the cushion body. This eliminates the need to peel off the protective sheet of the sticking part, and therefore the manufacturing work of the molded article with the skin material can be simplified.

  Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a plan view and a cross-sectional view of an embodiment of a skin material laminated sheet and a substrate, FIG. 2 is a perspective view of an embodiment of a manufacturing apparatus, and FIG. 3 is a cross-sectional view showing peeling of a protective sheet in the embodiment FIG. 4 is a cross-sectional view showing the skin material stretched in the same embodiment, FIG. 5 is a cross-sectional view showing the press of the skin material in the same embodiment, and FIG. 6 shows the pressed state of the skin material and the cushion body in the same embodiment. Sectional drawing, FIG. 7 is a sectional view showing the fragile portion for breaking in the same embodiment, and FIG. 8 is a sectional view showing the time when the skin material is adhered to the back surface of the end portion of the base material in the same embodiment.

  The skin material laminated sheet 10 and the base material 20 shown in FIG. 1 are for automobile pillar garnishes. The skin material laminated sheet 10 includes a skin material 11, an adhesive 15, and a protective sheet 17.

  The skin material 11 is made of an appropriate material according to a molded product, such as a fabric or a synthetic resin sheet. The skin material 11 has a size larger than that of the base material 20, and includes a sticking portion 12 and a non-sticking portion 13 outside the sticking portion 12. The said sticking part 12 is a part stuck to the said base material 20, and is made into the magnitude | size which can be stuck to the back surface 22a of the surface 21 of the said base material 20, and the both ends 22 in this Example. On the other hand, the non-sticking portion 13 is a portion that is not stuck to the base material 20 and is a portion that is held by a manufacturing apparatus when a skin material is stretched when a molded product is manufactured. Moreover, although the non-adhesion part 13 is provided in the both sides of the sticking part 12, the skin material 11 of illustration shows the non-sticking part in the perimeter of the sticking part 12 depending on the shape of the target molded product, etc. 13 may be provided. The skin material 11 has a fragile portion 14 for breaking at a boundary position between the sticking portion 12 and the non-sticking portion 13. The fragile portion 14 for breaking is provided in order to break the skin material 11 at the boundary position between the sticking portion 12 and the non-sticking portion 13 when manufacturing a molded article with a skin material, which will be described later. Examples of the fragile portion 14 for breaking include those formed by notches and perforations as shown. In the present embodiment, the breakable weak portion 14 is formed by making cuts or perforations in the skin material laminated sheet 10, and penetrates the adhesive 15 and the protective sheet 17 described later to break the breakage. The weak part 14 for use is formed.

  The adhesive 15 is for sticking the skin material 11 to the base material 20 and includes a case of an adhesive. In the present embodiment, the adhesive 15 is provided in a layered manner on the entire back surface including the sticking portion 12 and the non-sticking portion 13 of the skin material 11.

  The said protective sheet 17 is laminated | stacked so that peeling is possible, covering the adhesion part 12 of the said skin material 11, and the adhesive agent 15 of the non-adhesion part 13. FIG. The protective sheet 17 is cut at the boundary position between the sticking portion 12 and the non-sticking portion 13 of the skin material 11 or is made fragile so as to be cut. In the present embodiment, the skin material 11 is cut or made fragile so as to be cut by a notch or a perforation constituting the fragile portion 14 for breaking. The protective sheet 17 is detachable from the adhesive 15 and is also referred to as release paper.

  In the skin material laminated sheet 10, a plurality of positioning holes 18 are formed through the non-sticking portion 13 of the skin material 11. The positioning hole 18 is used for positioning and holding the skin material 11 by inserting a positioning pin 35 of a manufacturing apparatus 30 to be described later when the skin material is stretched when the molded product with the skin material is manufactured.

  The base material 20 constitutes a core material of a molded article with a skin material, and a synthetic resin such as propylene and ABS resin is suitable.

  FIG. 2 shows an embodiment of an apparatus for manufacturing a molded article with a skin material. In the illustrated manufacturing apparatus 30, side portions 33 are erected on the left and right sides of the upper surface of the base portion 31, positioning pins 35 are erected on the upper end of the side portion 33, and a clamping plate 37 is a hinge (not shown). A cushion body 39 that is rotatably provided and elastically deformable is placed between the side portions 33 of the base portion 31, and a base material elevating device 41 is provided above the cushion body 39.

  The positioning pins 35 are formed with a size and an interval that can be inserted into the positioning holes 18 formed in the skin material laminated sheet 10. Further, the holding plate 37 can be overlapped with the upper end of the side portion 33 by rotation using the hinge, and a hole 38 into which the positioning pin 35 can be inserted is formed in the holding plate 37. Has been.

  The elastically deformable cushion body 39 is preferably an elastic foam such as polyurethane foam, and has at least an upper surface 39a having a size larger than the attaching portion 12 of the skin material 11. Further, the cushion body 39 of the present embodiment is a rectangular parallelepiped whose upper surface 39a is substantially flat.

  The base material lifting device 41 has a base material holding portion 42 at the lower end facing the upper surface 39a of the cushion body 39, and the base material holding portion 42 can be raised and lowered by a lifting means 43 such as a cylinder device. . When the base material holding portion 42 is lowered, the base material lifting device 41 presses the upper surface 39a of the cushion body 39 by the base material 20 held by the base material holding portion 42, and the required amount. It is designed to be elastically deformed. The base material holding portion 42 includes an engaging means with the base material 20, and the base material 20 is detachable. Examples of the engagement means of the base material holding portion 42 include a clip.

  The manufacturing method of a molded article with a skin material performed using the skin material laminated sheet 10 and the manufacturing apparatus 30 includes a skin material and base material setting step, a skin material pressing step, a skin material breaking step, and a skin material folding step.

  In the skin material and base material setting step, as shown in FIG. 3, first, the protective sheet 17 in the skin material laminated sheet 10 is peeled off from the adhesive 15 at the position of the sticking part 12, and the non-sticking part 13. At the position of, the state is left. Reference numeral 17 a is a portion provided on the adhesive 15 of the sticking portion 12 in the protective sheet 17, while 17 b is a portion provided on the adhesive 15 of the non-sticking portion 13. Next, as shown in FIG. 4, the skin material 11 in the skin material laminated sheet 10 is in a state directed toward the upper surface 39 a of the cushion body 39 in the manufacturing apparatus 30, and the positioning holes 18 of the skin material laminated sheet 10 are formed as described above. It fits on the positioning pin 35 of the manufacturing apparatus 30. Then, the sandwiching plate 37 is rotated and stacked on the side portion 33, and the non-sticking portion 13 of the skin material laminated sheet 10 is sandwiched between the upper end surface of the side portion 33 and the sandwiching plate 37. The surface material laminate sheet 10 is stretched on the cushion body 39. At that time, the skin material 11 of the skin material laminated sheet 10 comes into contact with the upper surface 39a of the cushion body 39 or is separated from the upper surface 39a depending on the height of the cushion body 39. Further, as shown in FIG. 5, the surface 21 of the base material 20 is set on the base material holding portion 42 toward the lower cushion body 39.

  In the skin material pressing step, as shown in FIG. 5 and FIG. 6, the base material holding unit 42 is lowered together with the base material 20 by the operation of the base material lifting device 41, and the adhesive material 12 on the skin material laminated sheet 10 is applied. The surface 21 of the base material 20 is pressed, and the surface 39 a of the cushion body 39 is pressed through the skin material 11. And by the elastic deformation of the cushion body 39 due to the pressing, the sticking portion 12 of the skin material 11 is crimped along the surface 21 of the base material 20, and the base material is bonded by the adhesive 15 of the sticking portion 12. The sticking part 12 of the skin material 11 is stuck on the surface 21 of 20. At that time, the upper surface 39a of the cushion body 39 is elastically deformed along the shape of the surface 21 of the base material 20, and an appropriate tension is applied to the skin material 11, so that the attaching portion 12 of the skin material 11 is , And adheres correctly along the surface 21 of the substrate 20. In the embodiment, the breaking weak part 14 has a cutting depth and a perforation interval so as not to break in this step.

  In the skin material breaking step, the base material holding part 42 is further lowered together with the base material 20. As a result, the base member 20 further presses the sticking portion 12 of the skin material 11 against the upper surface of the cushion body 39 to increase the elastic deformation of the cushion body 39 and adds to the fragile portion 14 for breaking of the skin material 11. As shown in FIG. 7, the tension is increased, and the fragile portion 14 for rupture is broken to leave the non-sticking portion 13 of the skin material 11 at the position of the positioning pin 35 of the manufacturing apparatus 30. At that time, since the protective sheet 17b is laminated on the adhesive 15 in the non-sticking portion 13 of the skin material 11, the strength of the skin material 11 is increased and the elongation is also suppressed. Irregular breakage from the portion 14 to the non-sticking portion 13 side can be prevented.

  In the skin material folding step, the skin material 11 and the base material 20 are removed from the base material holding part 42, and the sticking part of the skin material 11 protruding from the end 22 of the base material 20 as shown in FIG. The 12 end portions 12 a are folded back to the end portion back surface 22 a of the substrate 20, and are adhered to the end portion back surface 22 a of the substrate 20 with the adhesive 15. Thereby, the target molded product 25 with a skin material is obtained.

  In the above-described embodiment, an example is shown in which a skin material laminated sheet in which an adhesive is previously provided on the skin material and the adhesive is covered with a protective sheet is used, but instead of providing an adhesive on the skin material, a base material is used. An adhesive may be provided on the surface. In that case, a protective sheet becomes unnecessary in the sticking part of the skin material. Moreover, in the said Example, after the skin material 11 crimps | bonds to the whole surface 21 of the base material 20, the weak part 14 for a fracture | rupture is fractured | ruptured, but the skin material 11 is not necessarily based on the fracture | rupture of the weak part 14 for a fracture | rupture. It does not have to be after the entire surface 21 of the material is crimped.

  In the present invention, the molded article with the skin material is not limited to the pillar garnish, and may be, for example, other automobile interior parts.

It is the top view and sectional drawing of one Example of a skin material laminated sheet and a base material. It is a perspective view of one Example of a manufacturing apparatus. It is sectional drawing which shows peeling of the protection sheet of the sticking part in the Example. It is sectional drawing which shows the time of skin material tension | tensile_strength in the Example. It is sectional drawing which shows the press of the skin material in the Example. It is sectional drawing which shows the pressing state of the skin material and cushion body in the Example. It is sectional drawing which shows the time of a fracture | rupture of the weak part for a fracture | rupture in the Example. It is sectional drawing which shows the time of skin material sticking to the base-material edge part back surface in the Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Skin material laminated sheet 11 Skin material 12 Adhesion part 13 Non-adhesion part 14 Fragile weak part 15 Adhesive 17 Protection sheet 18 Positioning hole 20 Base material 21 Surface of base material 22 End part of base material 22a End of base material Back part 35 Positioning pin 39 Cushion body 39a Upper surface of cushion body

Claims (4)

In the method for producing a molded article with a skin material, in which the skin material is bonded to a base material,
The skin material has a fragile portion for breakage at a boundary position between the adhesive portion and the non-adhesive portion, while having an adhesive portion to the base material and a non-adhesive portion outside the adhesive portion,
The skin material is held and arranged at the non-sticking part,
The base material is pressed against the surface of the elastically deformable cushion body by pressing the surface of the cushion body with the base material, and the surface of the cushion body is pressed by elastic deformation of the cushion body. Attaching the adhesive part along the surface of the base material, and attaching the adhesive part of the skin material to the surface of the base material with an adhesive provided in advance on the base material or the skin material,
A method for producing a molded article with a skin material, wherein the skin material is ruptured at the fragile portion for breakage by pressing an adhesion portion of the skin material against the surface of the cushion body with the base material.   2. The skin according to claim 1, wherein after the skin material is ruptured at the fragile portion for breaking, an end portion of the adhesive portion of the skin material is folded and bonded to the back surface of the end portion of the base material. A method for manufacturing a molded article with a material.   The method for producing a molded article with a skin material according to claim 1 or 2, wherein a protective sheet is laminated on the non-sticking portion on the disposed skin material. The skin material is provided with an adhesive on the entire back surface including the sticking portion and the non-sticking portion, and the protective sheet is laminated so as to cover the adhesive, so that the protective sheet can be peeled off. It is cut at the boundary position with the non-sticking part, or is made fragile to be cut,
The said protective sheet is peeled from the said skin material in the part of the said sticking part when arrange | positioning the said skin material, The said protective sheet is left about the said non-sticking part, It is characterized by the above-mentioned. A method for producing a molded article with a skin material.

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