Die-cutting machine BUSCH A, A+P and AL
Series A is used for small and medium runs, mostly for labels.
These models offer a cutting size up to 180 x 180 mm.
Machine construction and function of the three models are identical except for the method of releasing the cutting stroke, as specified below. The machines are supplied with 5 adjustable clamping arms, waste slitters and holders which are fitted into the clamping arms, thus being able to reach any required position for slitting the waste. Once the stack of material is inserted the cutting stroke is activated by different functions according to the machine model.
Activation of the cutting stroke:
A by manual closure of the protective door, secured by auto-controlled limit switches. The door opens automatically when the punching ram runs backwards.
A+P by pneumatic closure of the protective door after pressing a push-button on the control panel. The function is secured by autocontrolled limit switches. The door opens automatically when the punching ram runs backwards.
AL by activating the electronic light barrier. The cutting stroke is activated automatically after the operator has inserted the stack of material and his/her hand has been withdrawn from the punching section. The throughput of the machine increases due to the quicker feeding sequence. The machine stops if the operator breaks the lightbarrier during the cutting process or during the backward run of the punching ram. The die-cutter therefore has no protective door.
The finished products are pushed onto the delivery tray for removing. The pneumatic counter-pressure unit GD-A, suitable for all A series machines is easy to fit onto the tray support instead of the delivery tray. The protective hood remains in place. Refitting will take approx.10 minutes.The die is especially manufactured for counter-pressure cutting with a movable matrix of plastics or aluminium inside the die. The counter-pressure unit is connected to a compressed air supply. The material is placed in front of the die with the projecting matrix and is held vertically in the die for stabilizing during the hydraulic cut. When the ram reaches the end of its stroke, the finished material is pushed back into the feeding tray by the pneumatic counter-pressure cylinder, from where it is removed.
This reduces the throughput of the machine by approx. half.
Technical dates of die-cutting machine:
|
model |
|
A |
A+P |
AL |
|
max. die-cut size |
mm |
180 x 180 |
180 x 180 |
180 x 180 |
|
min. die-cut size min. die-cut size with counter-pressure |
mm mm |
17 x 17 1) 30 x 30 |
17 x 17 1) 30 x 30 |
17 x 17 1) 30 x 30 |
|
max. diameter for circular products |
mm |
180 |
180 |
180 |
|
max. stack height (height of cutting die 60 mm) |
mm |
200 |
200 |
200 |
|
die-cutting pressure |
kg |
2.500 |
2.500 |
2.500 |
|
die-cutting strokes 2) |
per min |
11 |
13 |
15 |
|
machine output 2) (inserting 1.000 sheets/80gsm) |
sheets/ h |
660.000 |
780.000 |
900.000 |
|
space requirements (length with delivery tray x width x height) |
mm |
2.550 x 770 x 1.370 |
2.550 x 770 x 1.370 |
2.550 x 770 x 1.370 |
|
Weight |
kg |
570 |
575 |
575 |
1) one measure can be reduced to 10 mm with reinforced die back
2) max. achievable output. Die-cutting with counter-pressure reduces the output approx. by half
Technical dates of counter pressure:
|
model for die-cutting machines A, A+P, AL |
|
GD-A |
|
pneumatic connection: max. compressed air requirements |
nl/min |
12 |
|
counter-pressure, adjustable |
bar |
0-8 (250 kg) |
|
measurements: length x width x height |
mm |
315 x 60 x 325 |
|
weight |
kg |
10 |
The use of a counter-pressure unit is recommended:
– when die-cutting embossed paper and plastics (PP or PE foil) for small-sized inmould labels and similar articles – to minimize stretching or movement of the material during the cutting process
– when cutting tempered and varnished aluminium foil, e.g. for neck labels
– where tight tolerances are required
