US 12,325,057 B2
Clamping system for a press brake having a first biasing means acting on an actuating member and press brake comprising such a clamping system
Thomas Jan Herbert Jansen, Markelo (NL); and Dennis Hermanus Johannes Rouhof, Harbrinkhoek (NL)
Assigned to WILA B.V., Lochem (NL)
Appl. No. 18/017,536
Filed by WILA B.V., Lochem (NL)
PCT Filed Jul. 16, 2021, PCT No. PCT/NL2021/050448
§ 371(c)(1), (2) Date Jan. 23, 2023,
PCT Pub. No. WO2022/019753, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 2026128 (NL), filed on Jul. 24, 2020.
Prior Publication US 2023/0264245 A1, Aug. 24, 2023
Int. Cl. B21D 5/02 (2006.01)
CPC B21D 5/0245 (2013.01) 20 Claims
OG exemplary drawing
 
1. A clamping system for a press brake, the clamping system comprising:
an elongate beam comprising a receiving space for receiving a part of a bending tool, the receiving space having a depth direction defining parallel thereto a pressing direction in which a tool clamped by the clamping system is received;
a clamping element, the clamping element being movable between a first position in which it may engage on the bending tool for clamping it in the receiving space, and a second position for releasing the bending tool;
an actuating member for displacing the clamping element, the actuating member being movable between an active position in which it urges the clamping element towards the first position, and an inactive position in which it allows the clamping element to move to the second position, and
a first biasing member acting on the actuating member for biasing the actuating member towards its inactive position,
wherein the first biasing member extends at least partly in a first cavity in the actuating member, or extends at least partly around the actuating member.