Title:
芯材の製造方法及びトリム材の製造方法並びに芯材
Document Type and Number:
Japanese Patent JP5563316
Kind Code:
B2
Abstract:
A method of manufacturing an elongated core which is buried in an elongated trim. The method includes, forming slits to a metal plate, which extend in a second direction, at predetermined intervals in a first direction so as to form core pieces between the adjacent slits; and rolling a portion of the metal plate in which the slits are not formed in the second direction to form a rolled portion extending in the first direction, and expanding the slits in the first direction to form spaces, thereby preparing a primary core in which the core pieces and the spaces are alternately provided in the first direction. Additionally, the method includes, supplying the primary core to between a pair of deformed portion forming rollers engaged with each other such that reinforcing defaulted portions extending in the second direction are repetitively formed in the first direction.
Inventors:
Keiji Hiroe
Application Number:
JP2010003133A
Publication Date:
July 30, 2014
Filing Date:
January 08, 2010
Export Citation:
Assignee:
Tokai Kogyo Co., Ltd.
International Classes:
B21H8/00; B21B1/08; B29C47/02; B60R13/06; B29K105/22
Domestic Patent References:
| JP2003200791A | ||||
| JP2001232523A | ||||
| JP56039337U | ||||
| JP55150336A | ||||
| JP5237904A | ||||
| JP5876343A | ||||
| JP200052892A | ||||
| JP60174220A |
Attorney, Agent or Firm:
Muneo Kako