Method and apparatus for manufacturing a skin-covered article

• US 5,130,074 A
• Filed: 08/01/1990
• Issued: 07/14/1992
• Est. Priority Date: 05/28/1990
• Status: Expired due to Term

• Current Assignee: Chugoku Kasei Kogyo Kabushiki Kaisha, Tokyo Seat Kabushiki Kaisha
• Original Assignee: Chugoku Kasei Kogyo Kabushiki Kaisha, Tokyo Seat Kabushiki Kaisha
• Inventors: Sakamoto, Kunihiko, Matsuo, Yoshiaki, Suehiro, Harumi, Akazawa, Terumi
• Primary Examiner(s): Dawson, Robert A.
• Assistant Examiner(s): Kuhns, Allan R.
• Application Number:
  US07/561,546
• Time in Patent Office: 713 Days
• Field of Search: 264/46.4, 264/46.5, 264/46.6, 264/46.8, 264/259, 156/79
• US Class Current: 264/259
• CPC Class Codes: B29C 44/143 Means for positioning the lining in the mould in general B29C33/12
• CPC Class Codes: B29C 44/56 After-treatment of articles, e.g. for altering the shape

Abstract

A method for manufacturing a skin-covered article includes setting a skin mber having a top portion and a side portion in a mold assembly including an upper mold having a first cavity, a second cavity, and an enclosing projection, and a lower mold having an upper wall and a peripheral portion by covering the skin member over the lower mold with the back surface of the skin member being turned outside, coupling the upper mold and the lower mold to close the first cavity by the top portion to define a pad forming space with the enclosing projection pressing the top portion against the upper wall, and to close the second cavity by the peripheral portion to define a housing space to house the side portion, and introducing pad material into the pad forming space.

Claims

1. A method of manufacturing a skin-covered article having a molded material covered by a skin material which has an inside surface and an outside surface, comprising:

providing an upper mold having a first cavity along with a peripheral wall and a downwardly extending enclosing projection;

providing a lower mold having an upper wall with an outer periphery and a peripheral wall extending downwardly from said outer periphery to form a corner where said peripheral wall joins said upper wall;

forming a skin member having an inside surface, an outside surface, a top portion and a side portion with said top portion being connected to said side portion by connecting means on the inside surface of said skin member;

disposing said skin member over said lower mold with the outside surface of said top portion of said skin member contacting said upper wall, with the outside surface of said side portion of said skin member being next to said peripheral wall and with said connecting means being disposed at said corner;

coupling said upper and lower molds such that said enclosing projection engages the outside surface of said upper portion of said skin member and said first cavity overlies said upper portion of said skin member;

sealing said coupled upper and lower molds utilizing a seal between juxtaposed sections of said upper and lower molds, one of said sections being spaced outwardly from said peripheral wall of said lower mold to form at least a part of a second cavity there-between in which said side portion of said skin is disposed, said second cavity being separated from said first cavity by said engagement between said enclosing projection of said upper mold and said outside surface of said top portion of said skin member;

introducing molding material into said first cavity to form a molded material affixed to the inside surface of said top portion of said skin member;

decoupling said first and second molds and removing said molded material and skin member from said decoupled first and second molds;

folding said side portion of said skin over the sides of said molded material and thereby forming a skin-covered article with said connecting means being disposed on the inside of said skin-covered article.

2. A method according to claim 1, wherein said step of introducing molding material into said first cavity comprises introducing said molding material through an opening in said upper mold which communicates with said first cavity.

3. A method according to claim 1, wherein said molding material is introduced into said first cavity through an opening in an upper wall of said first mold.

4. A method according to claim 3, wherein said upper wall of said first mold is a generally planar wall, and introducing said molding material into said first cavity in a direction which is disposed at an acute angle relative to said generally planar upper wall.

5. A method according to claim 1 further comprising preventing said molding material introduced into said first cavity from entering said second cavity by said engagement between said enclosng projection of said top mold and said outside of said top portion of said skin member.

6. A method according to claim 1 further comprising locating said engagement between said enclosing projection of said top mold and said outside of said top portion of said skin member radially inwardly of said corner where said peripheral wall joins said top wall.

7. A method according to claim 1 further comprising retaining said side portion of said skin member in said second cavity during the step of introducing said molding material into said first cavity, and sealing said second cavity during said step of introducing said molding material into said second cavity by said engagement of said enclosing projection of said top mold against said skin material and said seal between said juxtaposed sections on said upper and lower molds.

8. A method according to claim 1, wherein said step of folding said side portion of said skin over the sides of said molded material comprises folding said side portion about said connecting means.

9. A method according to claim 1 further comprising fastening said folded side portions to said molded material to thereby form said skin-covered article.

10. A method according to claim 1, wherein said coupling of said upper and lower molds effects fixing of said skin member to said lower mold as said enclosing projection of said top mold sealing presses said top portion of said skin material against said upper wall of said lower mold, whereby said skin member is prevented from being displaced as said molding material is introduced into said first cavity.

11. A method according to claim 1, wherein said skin-covered article is a seat cushion.

12. A method of manufacturing a skin-covered article having a molded material covered by a skin material which has an inside surface and an outside surface, comprising:

providing an upper mold having a first cavity along with a peripheral wall and downwardly extending enclosing projection;

providing a lower mold having an upper wall with an outer periphery and a peripheral wall extending downwardly from said outer periphery to form a corner where said peripheral wall joins said upper wall;

forming a skin member having an inside surface, an outside surface, a top portion and a side portion with said top portion being connected to said side portion by connecting means on the inside surface of said skin member;

disposing said skin member over said lower mold with the outside surface of said top portion of said skin member contacting said upper wall, with the outside surface of said side portion of said skin member being next to said peripheral wall, and with said connecting means being disposed at said corner;

coupling said upper and lower molds such that said enclosing projection sealingly engages the outside surface of said upper portion of said skin member and said first cavity overlies said upper portion of said skin member;

sealing said coupled upper and lower molds utilizing a seal between a section of said upper mold and a section of said lower mold;

said section of said upper mold being spaced outwardly from said peripheral wall of said lower mold to form a second cavity therebetween in which said side portion of said skin is disposed, said second cavity being sealed from said first cavity by said sealing engagement between said enclosing projection of said upper mold and said outside surface of said top portion of said skin member ;

introducing molding material into said first cavity to form a molded material affixed to the inside surface of said top portion of said skin member;

decoupling said first and second molds and removing said molded material and skin member from said decoupled first and second molds;

folding said side portions of said skin over the sides of said molded material and thereby forming a skin-covered article with said connecting means being disposed on the inside of said skin-covered article.