Automatic stretch wrapping machine

Details Automatic stretch wrapping machine Automatic stretch wrapping machine

1983-07-15

1986-01-14

Sipos, John

Package making

Apparatus for contraction of cover by stretching or shrinking

53587, B65B 1104

Patent

active

045638632

ABSTRACT:
An automatic stretch wrapping machine is disclosed. An automatic stretch wrapper in accordance with the invention includes a turntable having a surface for rotatably supporting a load to be wrapped with a wrapping material; a source of wrapping material of a given width to be used to wrap a load disposed on the turntable; apparatus for gathering the wrapping material into a reduced width; a clamp mounted for rotation with the turntable for clamping the gathered wrapping material disposed in a plane to cause the wrapping material to be wrapped around the load without slippage as it rotates with the turntable, the clamping means not being wrapped with the wrapping material during wrapping of the load; a cutter carried by the turntable disposed between the support surface of the turntable and the clamp for severing gathered wrapping material gripped by the clamp; and a controller for controlling the operation of the wrapping machine to cause the clamp to clamp the gathered wrapping material at the initiation of wrapping of a load and release the gathered wrapping material at a time before the activation of the gathering apparatus, the gathering apparatus to be activated after the release of the gathered wrapping material from the clamp to reduce the width of the wrapping material, the clamp to be activated after the wrapping material is gathered to grip the gathered wrapping material, and the cutter to be activated to sever the clamped gathered material.

REFERENCES:
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patent: 3724642 (1973-04-01), De Good
patent: 4152879 (1979-05-01), Shulman
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patent: 4216640 (1980-08-01), Kaufman
patent: 4232501 (1980-11-01), Stackhouse
patent: 4235062 (1980-11-01), Lancaster
patent: 4271657 (1981-06-01), Lancaster
patent: 4300326 (1981-11-01), Stachouse
patent: 4432185 (1984-02-01), Geisinger

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