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[CN 201710549116.4] Leveling system of hydraulic press for molding process
[CN 201710549116.4] Hydraulic press leveling system suitable for molding process Title: Hydraulic press leveling system suitable for molding process Application number: CN 201710549116.4 Applicant: Bosch Rexroth (Changzhou) Co., Ltd. Application date: 2017-7-7 Patent type: Invention application A hydraulic press leveling system suitable for molding process includes: multiple leveling cylinders (4) for applying leveling force to the hydraulic press slider (1); the leveling cylinder control unit (20) includes a position controller (21) and a synchronization force controller (22), the position controller (21) is used to implement position control for each leveling cylinder (4), The synchronization force controller (22) is used to implement synchronization force control for each leveling cylinder (4); wherein, the leveling cylinder control unit (20) is configured to perform active synchronous position control of each leveling cylinder (4) in a downward phase of the slide deceleration, wherein each leveling cylinder is activated to cause the piston rod of each leveling cylinder to descend at a speed lower than the downward speed of the slide until the slide contacts the piston rod of each leveling cylinder.
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