Flexible
Clamp System

EVK with HKZ

  • For medium and large presses
  • For various die dimensions
  • For clamping upper dies
  • For dies with U-recesses
  • Suitable for retrofitting

Mode of operation

  • The electric positioning unit moves the T-bolt clamp along the T-slot.
  • A single-acting hydraulic cylinder generates the clamping force.
  • Unclamping is effected by spring load with the operating pressure switched off.

Description

The electric positioning unit moves the T-bolt clamp by means of a chain. Hydraulic pressure is applied to the T-bolt clamp to generate the clamping force. The hydraulic pressure must be maintained to secure the clamping force (e.g. with pilotcontrolled check valves). Therefore, pressure control by means of a pressure switch on the hydraulic power pack is necessary.

The electric positioning units may be switched off individually by the machine control so that these clamp units remain in their park position, where they are clamped.

  • Clamping of different die sizes
  • Large clamping dimension tolerance
  • Short clamping time
  • Displacement path up to 1000 mm available
  • Clamping in the park position possible
  • All important functions electrically monitored
  • High automation level
  • Central operation

  • Pilot-controlled check valves
  • Fittings
  • Hydraulic hoses / hydraulic accessories
  • Hydraulic power packs
  • Limit switches / cable
  • Plug connectors

Technical data

Positioning Unit EVK
Motor: Type
Supply voltage		 DC
24V		 alternatively three-phase
400V 50 HZ
Motor power [W] 8   90
Positioning speed [mm/s] 150   145
Limit switches: Type
Switch voltage
Designation		 • Inductive proximity switches
• PNP normally open; 10-30V DC
• Clamp unit in park position S1
• Clamp unit at the die S2
• End of displacement path (optional) S5
Plug connector Han® 25 D
Han® 6 E (additionally for three-phase drive)

 

Clamp Unit HKZ 104
Clamping force [kN] /
at operating pressure [bar]		 104 / 400
max. loading force [kN] 1) 130
max. operating pressure [bar] 400
Clamping dimension tolerance [mm] +/- 4
Stroke [mm] 12
Oil volume: Clamp [cm³] 31
max. operating temperature[°C] 70
Weight [kg] 16

 

1) Mechanical damage may occur at higher load.

Fixing is achieved with four hexagon head screws with flange (DIN 6921) M10x30, strength class 8.8 and two spring dowel pins Ø8x20(not included).