초록 ▼

The disclosure concerns an integral weigh wrapper for wrapping products in stretch film, by weighing each product as it is placed on an infeed support surface, and feeding successive weight signals to a data processor. Successive signals are compared, and when a stabilized weight signal is received,

The disclosure concerns an integral weigh wrapper for wrapping products in stretch film, by weighing each product as it is placed on an infeed support surface, and feeding successive weight signals to a data processor. Successive signals are compared, and when a stabilized weight signal is received, as determined by the successive comparisons, the data processor produces a start signal which activates a drive motor to rotate one revolution. This initiates one cycle of operation of the weigh wrapper, in which the product is advanced from the infeed station to the wrapping station, a wrapping cycle is initiated for any product then in the wrapping station, and a previously wrapped product is advanced to a printing and labeling station－where it is automatically indexed, a printed label pneumatically applied to a selected location on the wrapper, and the wrapped and labeled product outputted.

대표청구항 ▼

An integrated stretch-wrap weighing and wrapping machine comprising an infeed station, including a first drive means, for receiving a product to be wrapped, a data processor including storage means, a weight sensing device located in said infeed station for sensing the weight of said product to be w

An integrated stretch-wrap weighing and wrapping machine comprising an infeed station, including a first drive means, for receiving a product to be wrapped, a data processor including storage means, a weight sensing device located in said infeed station for sensing the weight of said product to be wrapped and supplying to said data processor an electrical signal indicative of such weight, a wrapping station including a vertically movable product support table for receiving a product advanced from said infeed station by said first drive means, after it has been weighed, and for supporting said product while it is being wrapped, said first drive means being adjacent to and aligned with said support table, when said support table is in a lowered position, a labeling station including an outfeed conveyor disposed adjacent to said support table, when said support table is in a raised position, for receiving a product from said support table, a printer for printing information on labels, and a label applicator for applying a printed label to the wrapped product while it is on the outfeed conveyor, said first drive means, support table, and outfeed conveyor defining the path of movement of a product through said apparatus, a supply of stretch film, film-clamping means for withdrawing a length of film from said film supply and holding it above the product support table, when said table is in its lowered position, second drive means for raising said product support table into said stretch film, folding means, operative after said product support table has been raised into said film, for folding the edges of the film under a product on said table to thereby wrap said product in said stretch film, third drive means for advancing said product wrapped in said stretch film onto said outfeed conveyor, said weight sensing device weighing a second product after the first product has been advanced to the wrapping station, and weighing a third product after said first and second products have advanced to said labeling and wrapping stations, respectively, said storage means storing a weight signal derived from each of said weighings, signal control means associated with said data processor for selectively delivering from said storage means to said printer the stored signal corresponding to each product, to enable the printer to print a label and the label applicator to apply the correct label to each wrapped product as it is outputted by the outfeed conveyor, said data processor producing a start signal upon its receipt of one of said weight signals, and said first drive means being responsive at least to said start signal to begin the advancement of a product from the infeed station to the wrapping station.