US 12,465,968 B2
Clamping system for a press brake comprising two internally interconnected cavities, press brake comprising such a clamping system, and method of manufacturing an elongate beam for 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. 18/017,581
Filed by WILA B.V., Lochem (NL)
PCT Filed Jul. 16, 2021, PCT No. PCT/NL2021/050450
§ 371(c)(1), (2) Date Jan. 23, 2023,
PCT Pub. No. WO2022/019755, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 2026131 (NL), filed on Jul. 24, 2020.
Prior Publication US 2023/0302515 A1, Sep. 28, 2023
Int. Cl. B21D 5/02 (2006.01)
CPC B21D 5/0236 (2013.01) 15 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 elongate beam having at least two cavities formed therein, further comprising a piston either arranged directly in each of the at least two cavities, or in a cylinder in each of the at least two cavities,
wherein each of the at least two cavities has an opening to the exterior of the elongate beam, and
wherein the at least two cavities are interconnected internally via a channel extending between side walls of the at least two cavities.