Shrink wrap machine

Abstract

This invention relates to a shrink wrap machine, which includes a central column and a shrink film synchronous transmission equipment. Said central column is provided with a first column and a second column which are configured to mutual suspended separation for removing the connection between the first column and the second column so that the shrink wrap machine can be expand to fit onto the desired diameter range of bottles or cans and increase the application of the shrink-film. When the shrink-film is opened by the first column of the center column, the shrink-film will be continuously transport by the label feeding rollers and the label pulling rollers of said shrink film synchronous transmission equipment. After the shrink-film is cut by the cutter equipment, a piece of the shrink-film will be pulled down by the label pulling rollers and the second guide pulleys and the shrink-film will be wrapped on the surface of the bottles or cans. Then the conveying equipment will convey the bottles and cans toward to the next equipment and making the shrink film and the bottles or cans be shrunk packaging completely.

What is claimed is: 
     
         1 . A shrink wrap machine at least comprising:
 a center column is provided with a first column and a second column which are separated from each other in suspended means, a cutter trough is set between the first column and the second column, said cutter trough is a kind of through groove and the gap of the cutter trough can be adjusted freely by adjusting the relative position of the first column and the second column, a shrink film unfolding sheet is fixed on the top of the foregoing first column, at least one pair of symmetrical first guide pulleys with no power are set at two sides of foregoing first column of center column for balancing and holding the first column, at least a pair of symmetrical second guide pulleys are set in the rear of the foregoing second column of center column and distributed on two side of the second column for holding and suspending the second column in the air, said second guide pulleys are driven rotation by the power member;   a shrink film synchronous transmission device is set between the first guide pulleys and the second guide pulleys, said shrink film synchronous transmission device is provided with at least a pair of symmetrical label feeding rollers and at least a pair of symmetrical label pulling rollers, said label feeding rollers are symmetrically set on two side of the first column and said label pulling rollers are symmetrically set on two side of the second column, the label feeding rollers and the label pulling rollers are driven by the power equipment to synchronous rotation the label feeding rollers and the label pulling rollers, and the first column and the second can be held and suspended in the air respectively by the label feeding rollers and the label pulling rollers; and   a cutter equipment is set on the side of the foregoing cutter trough of center column and between the label feeding rollers and the label pulling rollers for cutting the shrink-film on the cutter trough, said cutter equipment is provided with at least one cutting knife(s), and the range cut by the cutting knife(s) of the cutter equipment can be equal or more than the radius of the shrink-film.   
     
     
         2 . The shrink wrap machine as claimed in  claim 1 , wherein the orientation of said second guide pulleys is corresponding to the orientation of said first guide pulleys. 
     
     
         3 . The shrink wrap machine as claimed in  claim 1 , wherein a plurality of first balanced bearings are set inside the foregoing first column and corresponding to each first guide pulleys thereof for co-rotation with the first guide pulleys. 
     
     
         4 . The shrink wrap machine as claimed in  claim 1 , wherein a plurality of second balanced bearings are set inside the foregoing second column and corresponding to the upper end and the lower end of each second guide pulleys, the space d 1  formed between two adjacent second balanced bearings can contain the second guide pulleys so that the second balanced bearings and the second guide pulleys can be matched with the shrink film synchronous transmission device to jointly balance and position the second column. 
     
     
         5 . The shrink wrap machine as claimed in  claim 1 , wherein the orientation of the label feeding rollers and the label pulling rollers are perpendicular to the orientation of the first guide pulleys and the second guide pulleys. 
     
     
         6 . The shrink wrap machine as claimed in  claim 1 , wherein inside the foregoing first column, corresponding to the position of each label feeding rollers is set with two first support bearing, the space formed by two adjacent first support bearing is for containing its corresponding label feeding rollers and the first column of the center column will be held and suspended in the air by the label feeding rollers and first support bearing. 
     
     
         7 . The shrink wrap machine as claimed in  claim 1 , wherein inside the foregoing second column, corresponding to the position of each label pulling rollers is set with two second support bearing, the space d 3  formed by two adjacent second support bearing is for containing its corresponding label pulling rollers, and the second column of the center column will be held and suspended in the air by the label pulling rollers and the second support bearing. 
     
     
         8 . A shrink wrap machine at least comprising:
 a center column is provided with a first column and a second column which are separated from each other in suspended means, a cutter trough is set between the first column and the second column, said cutter trough is a kind of through groove and the gap of the cutter trough can be adjusted freely by adjusting the relative position of the first column and the second column, a shrink film unfolding sheet is fixed on the top of the foregoing first column, at least a pair of symmetrical second guide pulleys are set in the rear of the foregoing second column of center column and distributed on two side of the second column for holding and suspending the second column in the air, said second guide pulleys are driven rotation by the power member;   a shrink film synchronous transmission device is set between the first guide pulleys and the second guide pulleys, said shrink film synchronous transmission device is provided with at least two pair of symmetrical label feeding rollers and at least a pair of symmetrical label pulling rollers, said label feeding rollers are symmetrically set on two side of the first column and said label pulling rollers are symmetrically set on two side of the second column, the label feeding rollers and the label pulling rollers are driven by the power equipment to synchronous rotation the label feeding rollers and the label pulling rollers, and the first column and the second can be held and suspended in the air respectively by the label feeding rollers and the label pulling rollers; and   a cutter equipment is set on the side of the foregoing cutter trough of center column and between the label feeding rollers and the label pulling rollers for cutting the shrink-film on the cutter trough, said cutter equipment is provided with at least one cutting knife(s), and the range cut by the cutting knife(s) of the cutter equipment can be equal or more than the radius of the shrink-film.   
     
     
         9 . The shrink wrap machine as claimed in  claim 8 , wherein a plurality of second balanced bearings are set inside the foregoing second column and corresponding to the upper end and the lower end of each second guide pulleys, the space formed between two adjacent second balanced bearings can contain the second guide pulleys so that the second balanced bearings and the second guide pulleys can be matched with the shrink film synchronous transmission device to jointly balance and position the second column. 
     
     
         10 . The shrink wrap machine as claimed in  claim 8 , wherein the orientation of the label feeding rollers and the label pulling rollers are perpendicular to the orientation of the first guide pulleys and the second guide pulleys. 
     
     
         11 . The shrink wrap machine as claimed in  claim 8 , wherein inside the foregoing first column, corresponding to the position of each label feeding rollers is set with two first support bearing, the space formed by two adjacent first support bearing is for containing its corresponding label feeding rollers and the first column of the center column will be held and suspended in the air by the label feeding rollers and first support bearing. 
     
     
         12 . The shrink wrap machine as claimed in  claim 8 , wherein inside the foregoing second column, corresponding to the position of each label pulling rollers is set with two second support bearing, the space formed by two adjacent second support bearing is for containing its corresponding label pulling rollers, and the second column of the center column will be held and suspended in the air by the label pulling rollers and the second support bearing.