Automatic film winding device, sliting and winding system, and method of producing rolled film

Abstract

To provide an automatic film winding apparatus, a slit winding system and a method for producing a rolled film which can improve winding quality, is reduced in size and enables winding mechanisms to be arranged in multiple stages. The automatic film winding apparatus includes winding shafts 21 and 22 for winding a film around a winding core 12 , a turret 20 for pivotably supporting the winding shafts 21 and 22 in a rotatable manner, a touch roller 23 which presses the film to the winding shaft 22 when a predetermined amount of the film is wound by the winding shaft 21 , and the turret 20 is rotated by a predetermined angle to allow the film to be hung on the winding shaft 22 , a cutter 241 which cuts the film between the winding shaft 21 and the winding shaft 22 , and a film affixing roller 25 which presses the film which has been cut to the winding shaft 22 , and moves to the front end of the film while winding the film around the winding core 12 with the film being pressed.

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . An automatic film winding apparatus comprising two or more winding shafts for winding a film around a winding core, a turret which moves the two or more winding shafts to a film winding position and a waiting position, and a cutter for cutting the film, which further comprises:
 a touch roller which presses the film to the winding core of a second winding shaft of the two or more winding shafts when a predetermined amount of the film is wound by a first winding shaft at the film winding position of the two or more winding shafts, the turret is rotated by a predetermined angle and, the film is hung on the winding core of the second winding shaft of the two or more winding shafts which has moved to the film winding position;   the cutter which cuts, between the first winding shaft and the second winding shaft, the film which has been pressed to the winding core of the second winding shaft by the touch roller; and   a film affixing roller which presses the film which has been cut to the winding core of the second winding shaft at a position on the downstream side of the touch roller and moves to the front end of the film which has been cut while winding the film with the film being pressed.   
     
     
         4 . The automatic film winding apparatus according to  claim 3 , which is capable of removing the rolled film from the first winding shaft which is at the waiting position and setting the winding core to the first winding shaft while winding a film by the second winding shaft. 
     
     
         5 . The automatic film winding apparatus according to  claim 3 , further comprising two or more winding mechanisms which have the touch roller and the film affixing roller. 
     
     
         6 . The automatic film winding apparatus according to  claim 3 , wherein the touch roller has arms for a touch roller which rotatably support the touch roller, the cutter has a pair of arms for a cutter which rotatably supports the cutter, the film affixing roller has a pair of arms for a film affixing roller which rotatably supports the film affixing roller, the pair of arms for a film affixing roller are located between the pair of arms for the cutter, and the two or more arms for a touch roller are located between the pair of arms for a film affixing roller. 
     
     
         7 . The automatic film winding apparatus according to  claim 3 , further comprising an air bleeding mechanism. 
     
     
         8 . The automatic film winding apparatus according to  claim 7 , wherein the air bleeding mechanism is a touch roller. 
     
     
         9 . The automatic film winding apparatus according to  claim 3 , further comprising a film carrier roller for supplying the film to the winding shaft. 
     
     
         10 . The automatic film winding apparatus according to  claim 9 , further comprising a holding means which holds the film by pressing the film to the film carrier roller. 
     
     
         11 . The automatic film winding apparatus according to  claim 10 , wherein the holding means is a nip bar for pressing the film to the film carrier roller. 
     
     
         12 . The automatic film winding apparatus according to  claim 9 , wherein the angle of the contact surface of the film carrier roller and the film (film holding angle) is 90 to 160°. 
     
     
         13 . The automatic film winding apparatus according to  claim 9 , wherein the film contact surface of the film carrier roller is composed of a porous material or a slightly adhesive material. 
     
     
         14 . The automatic film winding apparatus according to  claim 3 , further comprising a winding core positioning mechanism for positioning the winding core in the width direction of the film. 
     
     
         15 . The automatic film winding apparatus according to  claim 14 , wherein the winding core positioning mechanism is provided with a bar material mounted such that it can move freely between the positioning position and the waiting position and a stopper mounted on the bar material such that it can move freely. 
     
     
         16 . The automatic film winding apparatus according to  claim 3 , wherein the winding shaft has a film tension control system. 
     
     
         17 . The automatic film winding apparatus according to  claim 16 , wherein the winding shaft is a friction shaft which functions as the film tension control system and the winding shaft is rotated in the winding direction with such a torque that enables the winding core to slide against the film which has been pressed by the touch roller in the state where the film affixing roller is pressing the front end of the film. 
     
     
         18 . The automatic film winding apparatus according to  claim 3 , wherein the cutter is provided with a guide member and a cutting blade which moves along the guide member, and the film which is imparted with tension by the abutment of the guide member is cut by the cutting blade. 
     
     
         19 . The automatic film winding apparatus according to  claim 3 , further comprising a retaining mechanism which retains the film which has been wound around the winding core by the film affixing roller to the surface of the winding core. 
     
     
         20 . The automatic film winding apparatus according to  claim 3 , wherein the film affixing roller is provided with a rotating shaft which is rotatably provided, a pair of arms provided such that they oppose to the rotating shaft, a pair of urging arms which are respectively connected rotatably to the front end of each of the pair of arms and urged in the direction of the rotating shaft, and a roller which is pivotably installed on the front end of each of the pair of urging arms in a rotatable manner. 
     
     
         21 . A slit winding system comprising:
 a slitter which cuts a film into a predetermined width; and   the automatic film winding apparatus according to  claim 3  for winding the film which has been supplied from the slitter.   
     
     
         22 . The slit winding system according to  claim 21 , wherein at least one of the slitter and the automatic winding apparatus is movably provided. 
     
     
         23 . (canceled) 
     
     
         24 . A method for producing a rolled film in which a film is wound around a plurality of winding shafts by turns, comprising:
 a step in which a first winding shaft stops rotating when a predetermined amount of the film is wound around a winding core of a first winding shaft;   a step in which a turret holding the plurality of winding shafts rotates by a predetermined angle, allowing the film to be hung on the winding core of a second winding shaft, with the film being held by a carrier roller;   a step in which the touch roller presses the film to the winding core of the second winding shaft, and the cutter cuts the film between the first winding shaft and the second winding shaft;   a step in which the film affixing roller presses the film to the winding core of the second winding shaft at a position on the downstream side of the touch roller; and   a step in which the film affixing roller moves to the front end of the film with the film being pressed.   
     
     
         25 . The method for producing a would film according to  claim 24 , further comprising a step in which the second winding shaft formed of a friction shaft rotates in the winding direction with a torque sufficient to remove slackening of the film which has been pressed by the touch roller in the state where the film affixing roller is pressing the front end of the film. 
     
     
         26 . The method for producing a rolled film according to  claim 24 , comprising:
 a step in which the touch roller and the film affixing roller stop pressing the film when the carrier roller stops holding the film, the second winding shafts rotates in the winding direction at a predetermined winding up torque, the film is wound around the winding core of the second winding shaft, and the front end of the film approaches an overlapping position, and   a step in which the touch roller presses the film to the winding core of the second winding shaft and the second winding shaft rotates in the winding direction at a predetermined torque when the front end of the film passes the overlapping position.