The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 01, 2011

Filed:

Mar. 26, 2008
Applicants:

Fumio Kondo, Nagoya, JP;

Shoichi Takenouchi, Toyokawa, JP;

Takayuki Nakanishi, Toyokawa, JP;

Osamu Matsui, Toyokawa, JP;

Inventors:

Fumio Kondo, Nagoya, JP;

Shoichi Takenouchi, Toyokawa, JP;

Takayuki Nakanishi, Toyokawa, JP;

Osamu Matsui, Toyokawa, JP;

Assignees:

Denso Corporation, Kariya, JP;

Denso Preas Co., Ltd., Toyokawa, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21B 37/48 (2006.01);
U.S. Cl.
CPC ...
Abstract

A plurality of press devicesare arranged in a plastic working system. The plastic working system includes: a loop correction sensorfor watching a slack of a coil material C intermittently delivered from a preceding first press device; and a second slack watching meansfor watching a slack of the coil material C generated at the time of sending the coil material C to a succeeding second press device. According to the slack generated by intermittent feeding of the coil material C sent from the first press device, intermittent feeding is converted to continuous feeding by the feeding means. At the same time, the continuous feeding speed is subjected to speed increasing/decreasing control. On the other hand, by the second slack watching means, a slack of the coil material C is watched at the time of feeding the coil material C to the second press deviceand the preceding first press deviceis subjected to speed increasing/decreasing control.


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