Quick thread wrapping machine stretch head and wrapping film...

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 41/16 (2006.01) B65B 11/02 (2006.01) B65H 23/188 (2006.01)

Patent

CA 2252275

A wrapping machine stretch head comprises a pair of tension rollers having first ends mounted upon a base plate and second ends mounted within separate and independent brackets such that the second ends of the tension rollers are not connected to each other and define an axially open space therebetween. In this manner, when wrapping film is to be threaded or routed between and around the tension rollers, the wrapping film is able to be inserted into the axially open space in an axially oriented mode. The rotary drive system for the tension rollers is also mounted upon the base plate and not within an upper frame member as is characteristic of conventional wrapping machine stretch heads.

Cette invention concerne une tête d'étirage de machine à emballer sous pellicule plastique étirable, qui comprend une paire de rouleaux tendeurs montés par une première extrémité sur un plateau et par une seconde extrémité dans des ferrures distinctes et indépendantes l'une de l'autre de sorte que lesdites secondes extrémités ne soient pas raccordées l'une à l'autre et qu'il soit défini entre les deux rouleaux un espace vide axial. Ainsi, lorsque la pellicule d'emballage doit être enfilée ou dirigée entre les rouleaux tendeurs et passée autour, elle peut l'être bien alignée axialement dans l'espace ouvert axial. Le mécanisme de rotation des rouleaux tendeurs est également monté sur le plateau et non pas dans la partie supérieure du bâti comme dans les machine classiques d'emballage sous pellicule plastique étirable.

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