Beumer stretch hood S - Crimping and Stretching Unit Function

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BEUMER stretch hood® S

Technical description

BA-6090103-EN

19.08.09

Crimping and stretching unit

1 Touch-down bow

2 Crimping bow

3 Crimping bow support

4 Guide frame

For crimping the film hood, the crimping motors approach the crimping bows and

then the film is pulled over the bows. The length of the film to be crimped is de-

termined by the film length measuring device in the hood applicator head.

After the film hood has been prepared, its upper part is crimped as well. Then

the crimping bow supports are moved to the stretch position. In this position the

film hood is pulled over the load.

A diffuse scan on each crimping bow support detects whether the film has torn

apart during stretching or pulling over the film hood. Besides, there must not be

any film on one of the crimping bows any more when the stretch frame is raised.

If the film tears apart or if it is still on one of the crimping bows during raising, the

malfunction "film tear" is indicated. The system is automatically switched off and

the corresponding fault message is displayed on the control terminal.

The four touch-down switches under the crimping bows are used as safety

switches. They prevent the crimping bows from landing on an obstacle during

the lowering process.