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US 4,063,400 AGranted
Continuous film sealing machine
AssigneeWeldotron Corporation
InventorEugenio Millevoi
Life of this patent
Estimating the term…
Abstract
The machine includes a horizontal operating table and various apparatus associated therewith for performing different functions. The apparatus includes, as a first portion of the operating table, a product in-feed conveyor, a supply of film and bag-forming means, bag-sealing means including means for operating sealing bars to form a seal and simultaneously moving the packaged product along the table to an out-feed conveyor. The invention is particularly concerned with the bag-sealing means.
Claims7
Film-sealing apparatus comprising
- a generally horizontal table including a product infeed area, a film supply, means for forming a bag from the film, the product being fed into said bag along a horizontal path, and
- sealing apparatus positioned to receive said bag and seal said bag, said sealing apparatus including vertically aligned movable sealing members adapted to receive between them portions of the bag to be sealed, said apparatus including means for moving said sealing members into and out of sealing engagement with said bag between them, said apparatus including means for simultaneously moving said sealing members horizontally while they perform a sealing operation,
- said sealing apparatus further including
- a pair of plates spaced apart and disposed parallel to each other and parallel to said horizontal path,
- a first pair of sprockets vertically aligned on the inner surface of said first plate facing said second plate, and a second pair of sprockets vertically aligned on the inner surface of said second plate and facing said first plate, corresponding sprockets of said first and second pairs being horizontally aligned,
- a first chain threaded on said first pair of sprockets,
- a second chain threaded on said second pair of sprockets,
- a first sealing bar extending across the space between said pairs of sprockets, disposed horizontally, and secured to one portion of each chain which travels in one direction when said sprockets are driven, and,
- a second sealing member extending across the space between said plates, disposed horizontally, and secured to the opposite portion of each of said chains which travels in the opposite direction in which said sprockets are driven.
6 more elements
Film-sealing apparatus comprising
- means providing a horizontal path along which a tube containing a series of products progresses to a sealing station for sealing each of said products in its own tube,
- the apparatus at said sealing station comprising
- first and second sealing bars disposed horizontally transverse to said path,
- sprocket means and chain means secured to said first and second sealing bars whereby movement of said sprocket and chain means in one direction drives said sealing bars together, and movement of said sprocket and chain means in the opposite direction drives said sealing bars apart, said sealing bars being driven vertically up and down, and
- means rigidly coupling said chain means to a vertically reciprocable member which is coupled itself through a linkage to a cam whereby said vertically reciprocable member can be driven up and down and said sealing bars can be driven up and down.
2 more elements
Dependencies are inferred from the claim text.