EP0323213A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of manufacturing molding members
Assignee: Hashimoto Forming Industry Co Ltd
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Filing: 1988-12-28
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Granted: —
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Expires: 2008-12-28
Abstract
Abstract There is disclosed a method of manufacturing molding members, for instance for automobiles, wherein and elongate shaped body is prepared from synthetic resin material either by an extrusion process, or by an injection process and is subjected to a controlled heating so as to soften the interior resin material while preserving the hardness of the outer surface portion. A cutter blade is advanced into the shaped body while it is subjected to the controlled heating, whereby the outer surface portion is urged and deformed inwardly to form a smooth end surface in continuous connection with remaining outer surface of the molding member.
Inventors
- 👤 Kaoru Hashimoto Forming Ind. Co. Ltd. Kimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 22:42
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/0044; B26; B26D; B26D3/00; B26D3/02; B26D7/00; B26D7/08; B26D7/084; B26D7/10; B29C2793/00; B29L; B29L2009/00; B29L2009/005; B29L2009/006; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/302; Y; Y10; Y10S; Y10S264/00; Y10S264/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
A method of manufacturing molding members composed of a thermoplastic synthetic resin material, comprising the steps of forming said resin material into an elongate shaped body with a cross-section corresponding to that of the molding member, and cutting the shaped body at at least one end to give a predetermined length of the molding member: wherein said shaped body is subjected to such a controlled heating at least adjacent said cut that the shaped body has its interior portion heated above the softening temperature of the resin material whereby its outer surface portion becomes higher in hardness than said interior portion; and wherein a cutter blade is advanced towards the shaped body while it is subjected to said controlled heating, and there is formed a longitudinal end surface of the cut body substantially exclusively consisting of said outer surface portion, and a cut surface is arranged substantially on a rear side of said shaped body.
Claim 2
Independent Claim
155 words
A method of manufacturing molding members composed of a thermoplastic synthetic resin material, comprising the steps of forming said resin material into an elongate shaped body with a cross-section corresponding to that of the molding member, and cutting the shaped body at at least one end to give a predetermined length of the molding member: wherein said shaped body is subjected to such a controlled heating at least adjacent said cut that the shaped body has its interior portion heated above the softening temperature of the resin material whereby its outer surface portion becomes higher in hardness than said interior portion; and wherein a cutter blade is advanced towards the shaped body while it is subjected to said controlled heating, and there is formed a longitudinal end surface of the cut body substantially exclusively consisting of said outer surface portion, and a cut surface is arranged substantially on a rear side of said shaped body.
Claim 3
Dependent Claim
36 words
The method as claimed in claim 1, wherein said controlled heating of the interior portion of the shaped body is effected by a high frequency dielectric heating while subjecting said outer surface portion to a cooling.
Claim 4
Dependent Claim
31 words
The method as claimed in claim 1 or 2 wherein said shaped body is under tension while said cutter blade is advanced from the outer surface portion into the shaped body.
Claim 5
Dependent Claim
20 words
The method as claimed in claim 1, 2 or 3 wherein said shaped body is formed by an injection process.
Claim 6
Dependent Claim
39 words
The method as claimed in claim 4, wherein said shaped body as formed by the injection process has at least one longitudinal end region with a constant cross-section, and said cutting is effected with respect to said end region.
Claim 7
Dependent Claim
20 words
The method as claimed in claim 1, 2 or 3 wherein said shaped body is formed by an extrusion process.
Claim 8
Dependent Claim
34 words
The method as claimed in claim 6, wherein said shaped body as formed by the extrusion process has said interior portion and said outer surface portion which are of different material from each other.
Claim 9
Dependent Claim
76 words
Apparatus for cutting molding members including means to heat said member by controlled heating at least adjacent the point where it is to be cut, such that the inner portion is heated above the softening point, and a cutter blade to be advanced towards the body to form a longitudinal end surface of the body substantially exclusively consisting of the outer surface of the body and a cut surface arranged at the rear of the body.
Claim 10
Dependent Claim
76 words
Apparatus for cutting molding members including means to heat said member by controlled heating at least adjacent the point where it is to be cut, such that the inner portion is heated above the softening point, and a cutter blade to be advanced towards the body to form a longitudinal end surface of the body substantially exclusively consisting of the outer surface of the body and a cut surface arranged at the rear of the body.
References Cited (Backward Citations)
No citation records indexed.
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