Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CONTROLLING DEVICE FOR SMALL-SIZED PRESS
Document Type and Number:
Japanese Patent JPS57146500
Kind Code:
A
Abstract:

PURPOSE: To prevent damage of an electric motor and deformation of a movable part by providing a means that detects the cam position of an oscillating cam at the time of completion of one process, overload of the device, abnormal rotation of the electric motor to cuts off the current of the motor.

CONSTITUTION: In a small-sized press for pressing or cutting, an oscillating lever 10 makes one oscillating motion with one rotation of a cam 4' and a die 14 operates to complete one process. The position of the cam 4' at this time is detected by a position detector 19 and current is cut off by operating the starting switch 18 of an electric motor. When abnormal load is applied during operation, it is detected by an over-current detector 21, and the power source switch is cut off. At this time, detection of overcurrent of starting time is evaded for a specified time. When the number of rotation is decreased, owing to the fault of the motor the time required for one process of the cam 4' becomes longer than the specified time is detected by a time detector 20, and the power source switch 18 is cut off.


Inventors:
SAKAI YASUJI
MURAI NOBUAKI
NAKANO KIYOTAKA
Application Number:
JP1981000030097
Publication Date:
September 09, 1982
Filing Date:
March 02, 1981
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JAPAN STORAGE BATTERY CO LTD
International Classes:
B23D17/04; B23Q5/34; B23Q11/04; B25B7/12; B30B1/06; B30B1/16; B30B15/14; B30B15/28; F16H21/44; H01R43/042; (IPC1-7): B30B1/06; B30B15/14
Domestic Patent References:
JPS5587540A1980-07-02
JPS5561400A1980-05-09



 
Previous Patent: JPS57146499

Next Patent: JPS57146501