Energy-saving machine for packaging products with heat-shrinking film

Abstract

An energy-saving machine for packaging products with heat-shrinking film comprises a structure ( 11 ) consisting of a cover or dome ( 13 ), or upper part of the machine, which is arranged on a tank ( 12 ), or lower part, to define a chamber ( 15, A, B), said chamber being equipped with at least one heat source ( 21 A, 21 B), one fan ( 20, 20 A, 20 B) for circulating the air heated by said heat source and one transportation and support group ( 22, 22 A, 22 B) of a product ( 23 ) to be packaged, moreover being foreseen means for cutting and heat-sealing said film. According to the invention said machine foresees a dividing wall ( 17, 18 ) arranged in said dome ( 13 ) and/or said tank ( 12 ) to define at least two separate zones (A, B) which can be used together or separately.

1 . Energy-saving machine for packaging products with heat-shrinking film comprising a structure ( 11 ) consisting of a cover or dome ( 13 ), or upper part of the machine, which is arranged on a tank ( 12 ), or lower part, to define a chamber ( 15 , A, B), said chamber being equipped with at least one heat source ( 21 A,  21 B), one fan ( 20 ,  20 A,  20 B) for circulating the air heated by said heat source and one transportation and support group ( 22 ,  22 A,  22 B) of a product ( 23 ) to be packaged, moreover being foreseen means for cutting and heat-sealing said film, characterised in that it foresees a dividing wall ( 17 ,  18 ) arranged in said dome ( 13 ) and/or said tank ( 12 ) to define at least two separate zones (A, B) which can be used together or separately.  
     
     
         2 . Packaging machine according to  claim 1 , characterised in that said dividing wall ( 17 ) is arranged fixed in said dome ( 13 ).  
     
     
         3 . Packaging machine according to  claim 1  or  2 , characterised in that said dividing wall ( 18 ) is arranged fixed in said tank ( 12 ).  
     
     
         4 . Packaging machine according to  claim 1 , characterised in that said dividing wall ( 17 ,  18 ) is arranged capable of, moving in said chamber ( 15 , A, B) on sliding guides ( 24 ,  25 ;  26 ,  12   a ).  
     
     
         5 . Packaging machine according to  claim 4 , characterised in that integral with said dividing wall ( 17 ,  18 ) there is a plate ( 26 ) carrying said fan ( 20 ), being foreseen sensors or microswitches ( 19 A,  19 B), capable of being activated through the displacement of said dividing wall ( 17 ,  18 ), which selectively activate at least two groups of resistors ( 21 A,  21 B) arranged in said tank ( 12 ).  
     
     
         6 . Packaging machine according to  claim 4 , characterised in that said transportation and support group ( 22 ) can be moved horizontally inside said chamber ( 15 , A, B).  
     
     
         7 . Packaging machine according to  claim 1 , characterised in that it foresees at least one pair of groups of resistors ( 21 A,  21 B) to constitute said heat source.  
     
     
         8 . Packaging machine according to  claim 7 , characterised in that a first of said groups of resistors ( 21 A), arranged in correspondence with an inlet opening of said machine, always heats up with the machine carrying out shrinking operations, whereas a second group ( 21 B) is activated two resistors ( 21 B) at a time, when said dividing wall ( 17 ,  18 ) divides the total volume of said chamber ( 15 ) by about ⅔ and also said third resistor ( 21 B) is activated when said ⅔ ratio is exceeded.  
     
     
         9 . Packaging machine according to  claim 1 , characterised in that said transportation and support group ( 22 ,  22 A,  22 B) can be moved vertically (at S, T, V, W) in said chamber ( 15 , A, B).  
     
     
         10 . Packaging machine according to  claim 1 , characterised in that an upper portion ( 17 ) of said dividing wall separates said dome ( 13 ) into two separate zones (A, B) which can be used together or separately thanks to an external control.