Title:
LOWER DIE FIXING DEVICE OF PRESS BRAKE AND LOWER DIE FIXING METHOD OF PRESS BRAKE
Document Type and Number:
Japanese Patent JP2022120324
Kind Code:
A
Abstract:
To provide a lower die fixing device of a press brake which can lift up a lower die with a simple structure to reduce labor when the lower die is attached or detached and holds the lower die seated on a lower die support securely to reduce variations in bending accuracy.SOLUTION: A lower die fixing device of a press brake includes: a lower die support 11 having a placement surface 14 on which a lower die 3 may be placed; a pair of clampers 50 which sandwiches the lower die 3 with the lower die support 11; a lifting body for lifting up the lower die 3 in a manner that the lower die 3 may move along the placement surface 14; a compression coil spring which biases the lifting body so that the lower die 3 placed on the placement surface 14 is lifted up by the lifting body; and inner arc-surface-like parts 67 each serving as clamp force loosening prevention means which prevents clamp force of the clamper 50 from being loosened by inclination change of the side, where the clamper 50 is disposed, of the lower die 3 as the lower die 3 changes its state from a non-seated state where the lower die 3 is lifted up by the lifting body to a seated state where the lower die 3 is placed on the placement surface 14.SELECTED DRAWING: Figure 5
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Inventors:
TAKADA MASAAKI
Application Number:
JP2021017148A
Publication Date:
August 18, 2022
Filing Date:
February 05, 2021
Export Citation:
Assignee:
TAGAMI II EKUSU KK
International Classes:
B21D5/02; B21D37/04
Attorney, Agent or Firm:
Okinaka Hitoshi