Outsert molded product, its manufacturing method, and its sorting method

• US 6,783,486 B1
• Filed: 08/25/2000
• Issued: 08/31/2004
• Est. Priority Date: 11/25/1998
• Status: Expired due to Fees

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Murakami, Kenji
• Primary Examiner(s): Goodman, Charles
• Application Number:
  US09/581,926
• Time in Patent Office: 1,467 Days
• Field of Search: 428/139, 428/140, 428/23, 427/247, 229/96, 294/10
• US Class Current: 493/140
• CPC Class Codes: B29C 45/0053 combined with a final operation, e.g. shaping injection-compression moulding B29C45/561
• CPC Class Codes: B29C 45/14344 Moulding in or through a hole in the article, e.g. outsert moulding
• CPC Class Codes: B29K 2059/00 Use of polyacetals , e.g. POM, i.e. polyoxymethylene or derivatives thereof, as moulding material
• CPC Class Codes: Y10T 225/321 Preliminary weakener

Abstract

An outsert molded product allows easy separation between a substrate part and a resin part at the time of disposal of the product. As a result, a significant effect of promoting preservation of the global environment can be achieved. The outsert molded product comprises a metal substrate having a fixing hole, an anchor formed by a resin that is fixed to the substrate and a groove formed in at least a surface of the anchor. The anchor is provided continuously inside the fixing hole and both surfaces of the substrate including the fixing hole, and the groove is formed nearly in the shape of a ring in such position that the fixing hole is projected nearly in the vertical direction to the substrate. A method of sorting an outsert molded product comprises steps of: (a) providing an outsert molded product described above, (b) applying a force from a surface of an inner circumferential part of the groove toward the fixing hole so that the inner circumferential part of the groove including a resin-filled part that is located inside the fixing hole is separated from the outsert molded product, and (c) separating a resin portion remaining from the metal substrate.

Claims

1. An outsert molded product comprising:

a metal substrate having a fixing hole, a first surface and a second surface,

an anchor fixed to said fixing hole, said anchor being formed by a resin, said anchor being disposed continuously within an interior of said fixing hole and both surfaces of said substrate, and

a groove disposed in at least a first surface of said anchor in such place that said fixing hole is projected nearly in a vertical direction to said substrate, and formed nearly in a shape of a ring.

2. An outsert molded product of claim 1, wherein said groove is provided nearly in such position that an outer circumference of said fixing hole is projected nearly in the vertical direction to said substrate.

3. An outsert molded product of claim 1, wherein said groove is provided within an area formed by a circumference of said fixing hole as projected nearly in the vertical direction to said substrate.

4. An outsert molded product of claim 1, wherein said anchor has a

stepped portion formed in an inner circumferential part of said groove, and

said stepped portion protrudes beyond an outer part of said groove.

5. An outsert molded product of claim 1, wherein said groove includes a first groove part formed in said first surface of said anchor and a second groove part formed in a second surface of said anchor,

said first groove part is formed within an area formed by said fixing hole as projected nearly in the vertical direction to said substrate, and

said second groove part is formed outside an area formed by said fixing hole as projected nearly in the vertical direction to said substrate.

6. An outsert molded product of claim 1, wherein said groove is formed in such shape that a stress is converged in the direction of said fixing hole from a tip of said groove when a force is applied to an inner circumferential part of said groove in a direction of said fixing hole.

7. An outsert molded product of claim 1, wherein said resin contains polyacetal.

8. An outsert molded product comprising:

a metal substrate having a fixing hole, a first surface and a second surface, and

an anchor fixed to said fixing hole, and formed by injection molding of a resin,

wherein said anchor is shaped such that said anchor is larger than said fixing hole,

said anchor is disposed inside said fixing hole and in both surfaces of said substrate, and

a groove conforming to said shape of said fixing hole is disposed in at least a surface of said anchor in such position that said fixing hole is projected nearly in a vertical direction to said substrate.

9. An outsert molded product of claim 8, wherein said groove includes a first groove part formed in a first surface of said anchor and a second groove part formed in a second surface of said anchor,

said first groove part is located within an area formed by said fixing hole as projected nearly in the vertical direction to said substrate, and

said second groove part is located outside an area formed by said fixing hole as projected nearly in the vertical direction of said substrate.

10. An outsert molded product of claim 8, wherein said resin includes polyacetal.

11. An outsert molded product comprising:

a metal substrate having a fixing hole, a first surface and a second surface, and

an anchor fixed to said fixing hole, and formed by injection molding of a resin,

wherein said anchor is shaped such that said anchor is larger than said fixing hole,

said anchor is disposed inside said fixing hole and in both surfaces of said substrate,

a groove conforming to said shape of said fixing hole is formed in at least a first surface of said anchor in such position that said fixing hole is projected nearly in a vertical direction of said substrate,

a stepped portion is formed in an inner side of said groove, and

said stepped portion is shaped such that it protrudes beyond an outer circumferential side of said groove.

12. An outsert molded product of claim 11, wherein said groove includes a first groove part formed in said first surface of said anchor and a second groove parts formed in a second surface of said anchor,

said first groove part is located within an area formed by said fixing hole as projected nearly in the vertical direction to said substrate, and

said second groove part is located outside an area formed by said fixing hole as projected nearly in the vertical direction to said substrate.

13. An outsert molded product of claim 11, wherein said resin includes polyacetal.

14. An outsert molded product comprising:

a metal substrate having a top surface and a bottom surface, and a hole from said top surface to said bottom surface;

an anchor attached to said hole, said anchor formed by a resin and disposed continuously within an interior of said hole and attached to both surfaces of said substrate; and

a groove disposed in at least a first surface of said anchor, said groove substantially in line with said hole in the substrate in a direction perpendicular to the substrate.