Flexible
Clamp System

EVK-A 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

Thanks to its simple but solid design this positioning unit can be produced cost-effectively. 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 pilot-controlled check valves). Therefore, pressure control by means of a pressure switch on the hydrau-
lic 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.

  • Simple but solid design of the clamping system
  • 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

Technical data

Positioning Unit EVK-A
Motor: Type
Supply voltage		 three-phase
400V 50Hz
Motor power [W] 90
Positioning speed [mm/s] 145
Limit switches: Type
Switch voltage
Designation		 • two inductive proximity switches
• 10-30V DC
• Clamp unit in park position S1
• Clamp unit at the die S2
Plug connector Han 25 D Han 6 E

 

Clamp Unit HKZ 104/240
Clamping force [kN] /
at operating pressure [bar]		 104 / 240
max. loading force [kN] 1) 130
max. operating pressure [bar] 240
Clampingdimensiontolerance[mm] +/- 4
Stroke [mm] 12
Oil volume: Clamp [cm³] 52
max. operating temperature [°C] 70
Weight [kg] 17,5

 

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 (not included).