Improvements to machines wrapping products with a stretch film

Details Improvements to machines wrapping products with a stretch film Improvements to machines wrapping products with a stretch film

B - Operations, Transporting

65

B

B65B 11/54 (2006.01) B65B 41/12 (2006.01) B65B 57/12 (2006.01)

Patent

CA 2362397

The improvements can be applied to machines in which the film (7-7') is fed by two reels (8-8') having different widths, whereby independent feed mechanisms for each of the reels (8-8') are mounted on a common support (2), said support being height adjustable with the aid of a pair of end pneumatic cylinders (10) so that the respective feed combs (1-1') are selectively placed opposite the removal grippers (9) stretching the film (7-7') to the wrapping area where side grippers (15) are located pulling the film transversally, the position of said side grippers also being adjustable. The side folding devices (24) fold the film onto the lower face of the tray (25) or item to be wrapped, the position of said devices also being adjustable.

L'invention concerne des perfectionnements applicables dans des machines dans lesquelles l'alimentation de film (7-7') s'effectue ~ partir de deux bobines (8-8') de diff~rente largeur. Ces perfectionnements consistent ~ utiliser des m~canismes d'alimentation ind~pendants pour chacune desdites bobines (8-8'), mont~s sur un support commun (2) pouvant changer de position en hauteur gr~ce ~ une paire de cylindres pneumatiques (10) d'extr~mit~, afin que les peignes d'alimentation (1-1') respectifs soient s~lectivement positionn~s face ~ la pince d'extraction (9) qui entra¹ne le film (7-7') vers la zone d'emballage proprement dite, oÕ sont install~es des pinces lat~rales (15) ~galement r~glables servant ~ tendre le film transversalement, et des organes de pliage lat~raux (24) qui rabattent le film sur la surface inferieure du plateau (25) ou de l'article ~ emballer, et dont le positionnement peut ~galement Útre r~gl~.

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