JP3931031B2 - Film winding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film winding apparatus that is applied to a rewinding machine or a cutting machine and winds a long film around a core to cut the long film into a predetermined length.
[0002]
[Prior art]
Generally, in a rewinding machine that automatically winds a film around a core or a cutting machine that automatically cuts a wide film and winds it around a core, a long film is placed at a predetermined length upstream of the winding station. A structure is adopted in which a film having a predetermined length is sent to the winding station after being cut into pieces.
[0003]
2. Description of the Related Art With the recent diversification of products, there are two types of so-called inner winding in which the coated surface is wound around the core side even for the same product, and so-called outer winding in which the coated surface is wound around the outer side of the core. A series of product forms is indispensable. For this reason, various automatic winding apparatuses capable of automatically switching the film winding direction are employed in the cutting process and the rewinding process. For example, a winding apparatus disclosed in Japanese Patent Laid-Open No. 10-25043 is known. Yes.
[0004]
In the above prior art, as shown in FIG. 22, lock arms 3a and 3b which are swingable via cylinders 2a and 2b are arranged on both sides of the core 1 arranged at the film winding position. A rubber band 4 is wound around the lock arms 3a and 3b. Above the core 1, a guide plate 7 for swinging and transporting the film 6 transported vertically downward via the guide roller 5 to both sides of the core 1 is disposed so as to be swingable. .
[0005]
Therefore, when the film 6 is wound around the core 1 in the counterclockwise direction, the guide plate 7 is disposed at the position of the solid line in FIG. 22, and the lock arm 3b is disposed at the open position via the cylinder 2b. ing. For this reason, the film 6 conveyed vertically downward via the guide roller 5 is guided by the guide plate 7 at the leading end thereof and enters between the core 1 and the lock arm 3b. Next, when the core 1 rotates counterclockwise (arrow direction), the leading end of the film 6 is wound between the core 1 and the rubber band 4, and the film 6 is the outer peripheral surface of the core 1. Wrapped around.
[0006]
Further, when the film 6 is wound around the winding core 1 in the clockwise direction, the guide plate 7 is swung from the position of the solid line to the position of the two-dot chain line, and the cylinders 2a and 2b are driven to rotate the lock arm 3a. The lock arm 3b is placed in the closed position while being placed in the open position away from the core 1. Accordingly, the film 6 enters between the core 1 and the rubber band 4 from the right side of the core 1 in FIG. 22 and is wound around the outer peripheral surface of the core 1 in the clockwise direction.
[0007]
[Problems to be solved by the invention]
However, in the above prior art, the film 6 meanders until the end of the cross-cut film 6 enters between the rubber band 4 and the core 1, or the rubber band 4 which is a belt wrapper. Is difficult to regulate in the width direction of the film 6, even if the tip position of the fed film 6 is accurately regulated, the winding of the rubber band 4 causes the winding as shown in FIG. There is a possibility that the end portion 6a of the film 6 may protrude from the end surface of the lead 1. For this reason, when the wound body in which the film 6 is wound around the core 1 is transferred to the next packaging process and subjected to packaging processing, or transported after packaging, the end portion 6a which is a protruding portion is damaged. It has been pointed out that it is easy.
[0008]
The present invention solves this type of problem, and with a simple configuration, the film winding direction can be automatically switched, and the film can be wound around the core with high accuracy and efficiency. An object is to provide a winding device.
[0009]
[Means for Solving the Problems]
In the film winding apparatus according to the present invention, when the core is rotated in one direction via the core rotation mechanism, a long film is wound around the core to a predetermined length in the one direction, so that the wound body is wound. In addition, when the core is rotated in the other direction, the long film is wound around the core to the predetermined length in the other direction to obtain a wound body. At that time, on both sides of the winding core, a plurality of rollers for pressing and supporting the long film on the outer circumferential surface of the winding core, and the long film is inserted between the outer circumferential surface of the winding core. A plurality of blocks forming a gap are arranged.
[0010]
  For this reason, when the long film is fed to either side of the core, the long film is placed on the outer peripheral surface of the core in a desired direction under the supporting action of the plurality of rollers and the guiding action of the plurality of blocks. It is wound with high accuracy and efficiency. In particular, since the long film is wound around the outer peripheral surface of the core through a plurality of rollers and a plurality of blocks arranged on both sides of the core, the long film is compared with a conventional belt wrapper. Is effectively prevented. As a result, a high-quality wound body can be reliably obtained, and it is possible to effectively deal with inner winding and outer winding.Furthermore, on both sides of the winding core, when the long film is cut, the first and second nip rollers that can be moved forward and backward to hold the long film on the peripheral surface of the winding core, and the cut long film The first and second scanning rollers are provided that allow the end portion of the core to follow the peripheral surface of the core. Thereby, the winding direction of the long film can be automatically and reliably switched, and the winding operation can be performed accurately and smoothly.
[0011]
Further, the block includes first and second introduction guide members, and the first and second introduction guide members are arranged at the open position on the side where the long film is inserted with respect to the core. Place the side opposite the insertion side in the closed position. Therefore, the long film can be smoothly introduced to both sides of the core, and the winding direction of the long film can be automatically switched.
[0012]
Further, the roller and the block are configured to be switchable in position corresponding to the outer peripheral shape of the core having different diameters. Accordingly, it is possible to automatically cope with a change in the outer diameter of the core, and it is possible to efficiently wind the long film around the various cores having different diameters.
[0013]
Furthermore, a nip roller or a pass roller for guiding the long film to the film winding mechanism is configured to be able to advance and retreat via a moving means in order to distribute and convey the long film to both sides of the winding core. For this reason, it is possible to accurately feed the long film to a desired side of the winding core, and it is possible to easily wind the long film around the winding core in two series of inner winding and outer winding.
[0014]
Further, at least one of the cores includes a film holding mechanism that sucks and holds a leading end of the long film and applies tension to the long film, and a cutting mechanism that cuts the long film in the width direction. Arranged on the side. Therefore, when starting to wind the long film around the core, the leading end of the long film is accurately cut, and the end of the inner or outer wound body is automatically cut and wound. It becomes possible to easily cope with a change in direction and a change in core diameter.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic configuration explanatory view of a film rewinding machine 12 incorporating a film winding apparatus 10 according to the first embodiment of the present invention.
[0017]
The film rewinding machine 12 is provided with a roll-shaped photosensitive material (hereinafter referred to as a film roll 14) based on a PET film, a TAC film, a PEN film, a photographic paper, or the like. The film delivery device 18 for feeding out 16, the transporting device 20 for transporting the long film 16 sequentially to the next step, and the long film 16 transported by the transporting device 20 are cut in the width direction. The cutting device 26 for forming the long films 24a and 24b having a predetermined width dimension by dropping the ears, and the long films 24a and 24b are wound around the core 28 and then cut for each predetermined length. And a film winding device 10 for obtaining products 30a and 30b.
[0018]
The film delivery device 18 is provided with a delivery shaft 32 on which a set of film rolls 14 is supported so as to be indexable, and the film rolls 14 are delivered under the action of a delivery motor (not shown). The conveying device 20 includes a main feed roller 34 such as a suction drum, and a plurality of rollers 36. The main feed roller 34 is speeded so that the peripheral speed becomes a predetermined pattern via a servo motor (not shown). Be controlled. A tension detector (not shown) is mounted on one of the rollers 36 disposed between the main feed roller 34 and the delivery shaft 32, and the film tension between them is the tension detector and the delivery. It is controlled by a feeding motor (not shown) mounted on the shaft 32.
[0019]
The cutting device 26 includes rotary cutters 38a and 38b arranged on the left and right sides, and the ear portion formed by the cutting device 26 is wound up by an ear winding unit (not shown) whose width size can be switched. . The ear tension is controlled by a servomotor so as to obtain a predetermined tension pattern.
[0020]
Below the cutting device 26, separating rollers 40a and 40b for separating the cut long films 24a and 24b in different directions are disposed, and a nip roller pair 42a is disposed downstream of the separating rollers 40a and 40b. , 42b, the film winding device 10 is disposed. The film winding device 10 is provided for each of the long films 24a and 24b in the left and right pairs in FIG. 1, but only the long film 24a side will be described below and the long film 24b side will be described. The same reference numerals are assigned and detailed description thereof is omitted.
[0021]
The film winding apparatus 10 includes a winding core rotating mechanism 48 that holds a winding core 28 and can rotate in both directions, and a long film 24a is wound around the winding core 28 to a predetermined length by inner winding and outer winding. The film winding mechanism 50 for obtaining 30 and the peripheral surface of the long film 24a wound around the core 28 are gripped in a tensioned state and can be relatively separated from the film winding mechanism 50. A product receiving mechanism 52, a pair of cutting mechanisms 54 for cutting the long film 24a in the width direction in a state in which the long film 24a is tensioned by the product receiving mechanism 52, and the core 28. And a core supply mechanism 56 that automatically supplies the film take-up mechanism 50 to the film take-up mechanism 50.
[0022]
As shown in FIG. 2, on the upper frame 58 constituting the film rewinding machine 12, a pass roller 60 constituting a nip roller pair 42 a is arranged via a moving means 62 so that the position can be adjusted in the arrow A direction. A rotation drive source (not shown) is connected to the pass roller 60, and the pass roller 60 is set at a peripheral speed so as to have a higher feed speed than the main feed roller 34 in the direction of arrow B.
[0023]
A nip roller 64 is slidably disposed on the pass roller 60, and the nip roller 64 can move forward and backward with respect to the pass roller 60 via a cylinder 66. The nip roller 64 is pressed against the pass roller 60 with the long film 24a interposed therebetween, so that a predetermined tension can be applied to the cutting device 26 even when no tension is applied to the long film 24a on the downstream side of the nip roller 64. It is configured. The moving means 62 that supports the pass roller 60 and the nip roller 64 can be adjusted in the direction of the arrow A corresponding to the positions on both sides of the core 28.
[0024]
As shown in FIG. 1, when the pair of nip rollers 42a and 42b moves in the direction of arrow A between the separation rollers 40a and 40b and the pair of nip rollers 42a and 42b, tension-free occurs in the long films 24a and 24b. In order to prevent this, movable rollers 67a and 67b are arranged. The movable rollers 67 a and 67 b can be arranged at least at two positions corresponding to the positions on both sides of the core 28.
[0025]
As shown in FIG. 3, the winding core rotating mechanism 48 includes winding chucks 68 a and 68 b that hold both ends of the winding core 28 and rotate the winding core 28, and the winding chucks 68 a and 68 b are slidable means 70. It is possible to advance and retreat in a direction (arrow C direction) approaching and separating from each other. The take-up chuck 68a is connected with a torque-controllable servo motor 72 that applies a tension to the long film 24a after the long film 24a is wound around the core 28.
[0026]
The slide means 70 includes arm members 76a and 76b whose positions can be adjusted along the guide rail 74. The arm member 76a is provided with a first movable base 80a that can be moved forward and backward through a first cylinder 78a. A servo motor 72 is fixed to the first movable base 80a, and a rotary shaft 86a of the take-up chuck 68a is connected to a drive shaft 82 of the servo motor 72 via a belt pulley 84. The rotating shaft 86a is rotatably supported by the first movable base 80a via a bearing (not shown).
[0027]
The arm member 76b is provided with a second movable base 80b through a second cylinder 78b so as to be able to advance and retreat, and a rotary shaft 86b of the take-up chuck 68b through a bearing (not shown) on the second movable base 80b. Is supported rotatably.
[0028]
As shown in FIG. 2, the film take-up mechanism 50 is disposed on both sides of the winding core 28, and first and second nip rollers 90a, 90b that press and support the long film 24a on the outer peripheral surface of the winding core 28. First and second copying rollers 92a, 92b disposed on both sides of the winding core 28 and copying the cut end portions of the long film 24a to the peripheral surface of the winding core 28; and the copying roller First and second lower wrappers 94a and 94b for mounting 92a and 92b, an upper wrapper 96, and first and second introduction guide members (blocks) 98a and 98b disposed on both sides of the upper wrapper 96. .
[0029]
The first and second nip rollers 90a and 90b, the first and second copying rollers 92a and 92b, the first and second lower wrappers 94a and 94b, and the first and second introduction guide members 98a and 98b are perpendicular to the core 28. They are arranged symmetrically with respect to a center line extending in the direction.
[0030]
As shown in FIG. 4, the first and second nip rollers 90a and 90b are arranged at the tips of rods 102a and 102b extending in the horizontal direction from the first and second drive cylinders 100a and 100b arranged to face each other. While being rotatably supported, a nip pressure is set through springs 104a and 104b. The nip pressure and the material of the first and second nip rollers 90a and 90b are set according to the winding tension, wear coefficient, scratch resistance, etc. of the long film 24a.
[0031]
The first and second cylinders 108a and 108b are mounted on the rods 102a and 102b via the support bases 106a and 106b, and the rods 102a and 102b are directed from the first and second cylinders 108a and 108b to the substantially central portion of the winding core 28. First and second introduction guide members 98a and 98b are fixed to the tips of the rods 110a and 110b extending in this manner.
[0032]
The first and second introduction guide members 98a and 98b include guide surfaces 112a and 112b that are curved along the outer diameter of the core 28 and along an arc having a diameter larger than the outer diameter, Also, clearance surfaces 114a and 114b for avoiding interference with the second nip rollers 90a and 90b, and vertical surfaces 116a and 116b that engage with the upper trumpet 96 at the advanced position (closed position) are provided.
[0033]
The first and second lower wrappers 94a and 94b are fixed to the tips of rods 120a and 120b extending from the first and second drive cylinders 118a and 118b to face each other in the horizontal direction. As shown in FIG. 5, the first and second lower wrappers 94a and 94b include a plurality of guide portions 124 that are divided into predetermined width dimensions via the slits 122. A guide surface 126 having a radius of curvature slightly larger than the outer diameter of the core 28 is provided.
[0034]
A support plate 128 is disposed corresponding to each slit 122, and the support plate 128 is swingably supported on the bottom surfaces of the first and second lower wrappers 94a and 94b via a leaf spring 130. First and second copying rollers 92a and 92b are rotatably supported on the support plate 128, and the first and second copying rollers 92a and 92b can be formed of metal, plastic, rubber, or the like. The optimum one is selected depending on the material of the long film 24a.
[0035]
As shown in FIG. 4, the upper wrapper 96 includes a cylinder 132 arranged in the vertical direction, and a guide portion 135 is interposed between a pair of rods 132 a extending downward from the cylinder 132 via a spring 133. It is supported so that it can move up and down. The guide part 135 is provided with a guide part 135a corresponding to the outer peripheral surface shape of the winding core 28, and the first and second free rollers 137a and 137b are rotatably supported on the guide part 135a side. The first and second free rollers 137a and 137b are set to be the same distance from side to side with respect to the vertical center line of the winding core 28 and are set at the same distance from side to side and can be centered by being supported by the outer peripheral surface of the winding core 28. . The upper trumpet 96 is divided into narrow units and can be placed at any position via a linear guide (not shown) and retractable to a retracted position that does not interfere with the arm members 76a and 76b. It is.
[0036]
As shown in FIG. 6, four upper wrappers 96 are arranged between the arm members 76a and 76b. When the width of the long film 24a is changed, the upper wrapper 96 is arranged between the arm members 76a and 76b. The number of the upper wrappers 96 is increased or decreased.
[0037]
As shown in FIG. 2, the pair of left and right cutting mechanisms 54 includes a movable base 136 that can advance and retreat in the width direction of the long film 24 a along the guide rail 134, and a disc-shaped cutter is provided at the distal end side of the movable base 136. 138 is rotatably mounted. A film holding mechanism 139 is disposed below the cutting mechanism 54, and the film holding mechanism 139 includes a suction box 142 that can be advanced and retracted in the horizontal direction via a drive cylinder 140. A path changing roller 144 is rotatably disposed on the upper side of the suction box 142.
[0038]
When the path changing roller 144 starts to wind the long film 24a around the core 28, the long film 24a is substantially orthogonal to a straight line connecting the axis of the core 28 and the first and second nip rollers 90a and 90b. To function. The suction box 142 is configured to be swingable with, for example, a path changing roller 144 as a fulcrum in order to apply tension to the long film 24a in a state where the long film 24a is adsorbed.
[0039]
The product receiving mechanism 52 includes a lifting platform 150 that can be moved up and down along the guide rail 148 with respect to the side surface of the base 146, and the width of the long film 24 a is provided on the lifting platform 150 via an automatic correction means 152. A main body 154 that can move forward and backward in the direction is placed. A torque motor 156 is incorporated in the main body 154, and a tension applying roller 164 is engaged with a drive shaft 158 of the torque motor 156 via a first belt pulley 160 and a second belt pulley 162. The tension applying roller 164 is drivably supported at the tip of the first swing arm 166.
[0040]
A first gear 168 is attached to the swing fulcrum of the first swing arm 166, and a second gear 170 meshing with the first gear 168 is fixed to the swing fulcrum of the second swing arm 172. The A free roller 174 is rotatably supported at the tip of the second swing arm 172, and a tension spring 176 is stretched over substantially the center of the first and second swing arms 166 and 172. The first swing arm 166 and the second swing arm 172 are provided with a lock mechanism (not shown) that can fix them in a predetermined opening state. When the product 30a is dispensed, the product receiving mechanism 52 is raised and the first swing arm 166 and the second swing arm 172 are expanded by the product 30a. Therefore, the position of the free roller 174 is changed via the lock mechanism. This is because the fixed product 30a can be dispensed stably.
[0041]
A slide base 178 is disposed on the side of the main body 154 so as to be able to advance and retreat in the width direction of the long film 24a, and a motor 180 is disposed on the slide base 178. An arm 184 is swingably supported by the motor 180 via a belt pulley 182, and a rider roller 186 is rotatably supported on the upper portion of the arm 184. A conveyor 188 for dispensing the product 30a is disposed between the first and second swing arms 166 and 172.
[0042]
As shown in FIG. 1, the winding core supply mechanism 56 includes a pair of air cylinders 190 arranged on both sides with respect to the path of the long film 24a, and extends from the air cylinder 190 toward the winding position. A suction cup 194 is attached to the tip of the existing rod 192. The suction cup 194 is configured to suck the outer peripheral surface of the winding core 28 and supply it to the winding position.
[0043]
The operation of the film rewinding machine 12 configured as described above will be described below in relation to the film winding apparatus 10 according to the first embodiment.
[0044]
As shown in FIG. 1, the film roll 14 mounted on the film delivery device 18 is rewound under the rotating action of a feed motor (not shown), and the long film 16 is guided to a main feed roller 34 constituting the transport device 20. It is burned. The main feed roller 34 is constituted by, for example, a suction drum or the like. The main feed roller 34 is speed-controlled with a predetermined speed pattern under the action of an AC servo motor (not shown) and is a long film via an encoder (not shown). Sixteen transport lengths are detected.
[0045]
The long film 16 whose speed has been adjusted by the main feed roller 34 is sent to the cutting device 26, where both ears are cut under the action of the rotary cutters 38a, 38b, and the long film having a predetermined width dimension. 24a and 24b are conveyed to the film winding apparatus 10. On the other hand, both ears are wound up with a predetermined tension pattern by an unillustrated ear winding unit. Only the processing on the long film 24a side will be described below.
[0046]
In the film winding apparatus 10, when the first winding process is started for the first time, as shown in FIG. 7, the new winding core 28 is moved to the winding position via the winding core supply mechanism 56, that is, the winding chuck. It is conveyed to a position corresponding to 68a, 68b, and both ends of the core 28 are supported by the take-up chucks 68a, 68b.
[0047]
When the long film 24a is inserted between the winding core 28 and the first nip roller 90a, the winding core 28 includes a second nip roller 90b, a second lower wrapper 94a, and a second lower wrapper 94a that constitute the film winding mechanism 50. 2 It is held by the copying roller 92b and the upper wrapper 96. At this timing, torque is applied to the servo motor 72. Further, the first introduction guide member 98a is retracted and disposed at the open position, while the second introduction guide member 98b is disposed at the closed position which is the advance position.
[0048]
Accordingly, the long film 24a is conveyed vertically downward through the nip roller 64 and the pass roller 60 under the rotating action of the pass roller 60, and the leading end of the long film 24a passes between the core 28 and the first nip roller 90a. The box 142 is held by suction. Next, the long film 24a is supported by the path changing roller 144 so as to extend and be held in a direction perpendicular to a line connecting the axis of the winding core 28 and the first nip roller 90a, and a suction box. Tension is applied to the long film 24a by swinging 142 in the direction of the arrow.
[0049]
In this state, the cutter 138 constituting the cutting mechanism 54 moves in the film width direction to cut (cross-cut) the long film 24a in the width direction. Then, when the first scanning roller 92a is displaced toward the core 28 via the drive cylinder 118a, the first scanning roller 92a causes the distal end portion of the cut long film 24a to reach the circumferential surface of the core 28. Wrap over a range of 90 ° (see FIG. 8).
[0050]
After the first copying roller 92a reaches the stroke end, the main feed roller 34 rotates, and the take-up chuck 68a rotates via the belt / pulley 84 by the drive torque of the servo motor 72 as shown in FIG. Start. As a result, the core 28 is rotated, and the long film 24a is wound around the outer periphery of the core 28 by a length sufficient to hold the tension, preferably 2-3 turns, as shown in FIG. In addition, the upper trumpet 96 is retracted upward under the action of the cylinder 132, and the first and second drive cylinders 100a and 100b and the first and second drive cylinders 118a and 118b are driven so that the first and second nip rollers are driven. 90 a and 90 b and the first and second lower wrappers 94 a and 94 b are separated from the core 28.
[0051]
When the long film 24a is wound up to a predetermined length around the winding core 28 via the film winding mechanism 50, the product receiving mechanism 52 rises and is wound by the lidar roller 186, the tension applying roller 164, and the free roller 174. 30 is held (see FIG. 10). Here, when the wound body 30 is held by the rider roller 186, the tension applying roller 164, and the free roller 174 constituting the product receiving mechanism 52, the torque control of the servo motor 72 constituting the core rotating mechanism 48 is performed. A predetermined tension is applied to the long film 24 a constituting the wound body 30.
[0052]
In this state, the torque motor 156 is driven, and a rotational force is applied to the tension applying roller 164 via the first and second belt pulleys 160 and 162 in the direction of arrow D in FIG. Accordingly, a predetermined tension is applied to the long film 24 a via the tension applying roller 164.
[0053]
Next, the drive of the servo motor 72 constituting the core rotation mechanism 48 is stopped, and the first and second cylinders 78a and 78b constituting the slide means 70 are driven, so that the take-up chucks 68a and 68b are wound. The wound body 30 is unchucked by being detached from both ends of the body 30. As a result, the wound body 30 is delivered to the product receiving mechanism 52 in a state where a predetermined tension is applied to the long film 24a by the tension applying roller 164 and the free roller 174, and the product receiving mechanism 52 is moved to the product delivery position. Descend to
[0054]
At this time, as shown in FIG. 11, the upper side of the long film 24 a is held immovably by the pass roller 60 and the nip roller 64. For this reason, when the product receiving mechanism 52 descends, the wound body 30 rotates in the direction of the arrow and descends while rewinding the long film 24a from its outer periphery. Here, torque is applied to the torque motor 156 in the direction of arrow D in FIG.
[0055]
When the wound body 30 is lowered, the long film 24a is placed between the pass roller 60 and the nip roller 64 while the outer periphery of the wound body 30 is held by the rider roller 186, the tension applying roller 164, and the free roller 174. The winding body 30 can be lowered while being drawn out, that is, in a fixed state without rotating. Here, the torque motor 156 is rotated in the direction of arrow D in FIG. 11 with a torque that applies a tension larger than that of the long film 24a.
[0056]
After the lowering of the wound body 30 is completed, the core 28 is supplied to the winding position via the core supply mechanism 56, and the new core 28 is held by the winding chucks 68a and 68b. At this time, the position of the pass roller 60 is set so that the pass of the long film 24a is substantially perpendicular to the line connecting the center of the winding core 28 and the center of the first nip roller 90a.
[0057]
When the core 28 is held by the core rotation mechanism 48, the first nip roller 90a moves forward through the first drive cylinder 100a, and the first nip roller 90a presses the long film 24a against the outer peripheral surface of the core 28. Hold. Then, the upper trumpet 96 descends, and the second lower trumpet 94b and the second nip roller 90b move forward through the second drive cylinders 118b and 100b and are disposed at positions surrounding the winding core 28 (see FIG. 12). ).
[0058]
After the wound body 30 held by the product receiving mechanism 52 is lowered, the torque motor 156 constituting the product receiving mechanism 52 is driven, so that a constant tension is applied to the long film 24a. The cutter 138 constituting the cutting mechanism 54 is driven. When the long film 24a, which is relatively easy to break, is used, the brake is applied to the tension applying roller 164 and then cut through the cutting mechanism 54 with the driving of the torque motor 156 stopped. Alternatively, the driving of the torque motor 156 may be stopped during the cutting by the cutting mechanism 54.
[0059]
As a result, the long film 24a is cut in the width direction, and the first copying roller 92a moves to the winding core 28 side under the driving action of the first driving cylinder 118a, and between the first nip roller 90a and the cutter 138. The end of the long film 24a in the free state is wound around the circumferential surface of the core 28 (see FIG. 13).
[0060]
Furthermore, under the action of the film winding mechanism 50, after the long film 24a is wound around the outer periphery of the core 28 by only two to three turns, as shown in FIG. 14, the first and second nip rollers 90a, 90b, After the upper wrapper 96 and the first and second lower wrappers 94a and 94b are displaced in a direction away from the core 28, the long film 24a is wound around the core 28 to a specified length.
[0061]
On the other hand, in the product receiving mechanism 52, the product 30a rotates in the winding direction under the rotating action of the tension applying roller 164, and the rear end of the cut long film 24a is wound up to an appropriate length. The product 30 a is delivered from the product receiving mechanism 52 to the conveyor 188 and discharged through the conveyor 188. Note that a tape attaching mechanism (not shown) for tape-fixing the rear end of the long film 24a wound around the product 30a may be disposed in the vicinity of the product receiving mechanism 52.
[0062]
The product 30 a is a so-called inner winding type in which the long film 24 a is wound around the outer periphery of the winding core 28 in the clockwise direction. Next, the long film 24 a is rotated counterclockwise around the outer periphery of the winding core 28. A so-called outer winding will be described.
[0063]
As shown in FIG. 15, the nip roller pair 42a moves in the direction of arrow A1 corresponding to the length of the diameter of the core 28. Then, under the rotating action of the pass roller 60, the long film 24a is conveyed vertically downward, and the end of the long film 24a is inserted between the winding core 28 and the second nip roller 90b. At this time, the second introduction guide member 98b is disposed at a predetermined retracted position (open position), and can smoothly guide the long film 24a. When the leading end of the long film 24a is disposed corresponding to the film holding mechanism 139, the suction box 142 is driven to hold the long film 24a by suction.
[0064]
Thereafter, the same operation as in the inner winding process is performed, and the long film 24a is wound counterclockwise around the outer peripheral portion of the core 28, whereby the outer winding type product 30a is manufactured.
[0065]
Thus, in the first embodiment, the film winding mechanism 50 has the first and second nip rollers 90a, 90b, the first and the second nip rollers 90a, 90b with the vertical center line of the winding core 28 arranged at the winding position as line symmetry. Second scanning rollers 92a and 92b, first and second lower wrappers 94a and 94b, first and second introduction guide members 98a and 98b, and upper wrapper 96 are provided so as to freely advance and retract (see FIG. 4). For this reason, when the long film 24a is inserted between the core 28 and the first nip roller 90a, the long film 24a is rotated in the clockwise direction so that the long film 24a is rotated in the clockwise direction. Are smoothly fed along a gap formed between the outer circumferential surface of the winding core and the first and second lower wrappers 94a, 94b, the second introduction guide member 98b, and the upper wrapper 96, and the outer periphery of the winding core 28 has a predetermined width. It is wound clockwise by the length.
[0066]
On the other hand, when the long film 24a is inserted between the core 28 and the second nip roller 90b, the long film 24a is similarly rotated by rotating the core 28 counterclockwise. Is smoothly wound around the outer peripheral surface of the core 28 in a counterclockwise direction by a predetermined length. As a result, two series of winding processes of inner winding and outer winding are smoothly performed on the outer peripheral surface of the winding core 28, and the long film is formed by meandering of an endless belt as in the case of using a conventional belt wrapper. The effect that the high-quality product 30a can be efficiently manufactured without the occurrence of protruding end portions 24a and the like is obtained.
[0067]
Here, when the long film 24a is inserted between the core 28 and the first nip roller 90a, the first introduction guide member 98a is disposed in the retracted position, that is, the open position via the first cylinder 108a. The long film 24a is smoothly introduced. On the other hand, when the long film 24a is inserted between the core 28 and the second nip roller 90b, the second introduction guide member 98b is disposed at the retracted position, that is, the open position via the second cylinder 108b. The insertion operation of the long film 24a is smoothly performed.
[0068]
Further, as shown in FIG. 2, the nip roller pair 42a is movable in the direction of arrow A via the moving means 62, and the nip roller pair 42a is provided on both sides of the core 28 corresponding to the winding direction of the long film 24a. Are selectively arranged. Accordingly, it is possible to accurately feed the long film 24a to a desired side (right side or left side) of the core 28, and there is an advantage that the winding operation of the long film 24a is performed with high accuracy.
[0069]
In the first embodiment, a pair of cutting mechanisms 54 are provided corresponding to both sides of the core 28, but a cutting mechanism 196 shown in FIG. 16 may be used. The cutting mechanism 196 includes a single cutter 198. The cutter 198 is capable of cutting the long film 24a that is selectively disposed on both sides of the core 28 by moving forward and backward through the slide means 199. Configured. For this reason, it is only necessary to provide a single cutter 198, and the configuration is effectively simplified.
[0070]
FIG. 17: is a front view which shows schematic structure of the film winding mechanism 200 which comprises the film winding apparatus which concerns on the 2nd Embodiment of this invention. In addition, the same referential mark is attached | subjected to the same component as the film winding apparatus 10 which concerns on 1st Embodiment, and the detailed description is abbreviate | omitted.
[0071]
As shown in FIGS. 17 and 18, the first and second introduction guide members 202 a and 202 b constituting the film winding mechanism 200 are divided into a plurality of first and second nip rollers 90 a and 90 b separated in the axial direction. A pair of support plates 203 spaced apart in the width direction and a free roller 204 rotatably supported between the support plates 203 are provided. The support plate 203 is formed in a comb-like shape by entering the shaft side of the first and second nip rollers 90 a and 90 b, and the support plate 203 advances and retreats to and from the rod 210 extending from the cylinder 208 via the spring 206. It is held freely.
[0072]
In the second embodiment configured as described above, the long film 24a wound around the outer peripheral surface of the core 28 comes into contact with and guides the free rollers 204 constituting the first and second introduction guide members 202a and 202b. Therefore, it is possible to reliably prevent damage to the long film 24a under the rotating action of the free roller 204.
[0073]
In addition, the first and second nip rollers 90a and 90b and the first and second introduction guide members 202a and 202b are arranged in a comb-teeth shape overlapping each other. As a result, the guide function of the long film 24a can be improved, and slack or the like can be effectively prevented from occurring in the long film 24a. It becomes possible to wrap around the quality.
[0074]
FIG. 19 is an explanatory front view of the film winding mechanism 220 constituting the film winding apparatus according to the third embodiment of the present invention. In addition, the same referential mark is attached | subjected to the same component as the film winding apparatus 10 which concerns on 1st Embodiment, and the detailed description is abbreviate | omitted.
[0075]
The film winding mechanism 220 corresponds to two types of winding cores 28a and 28b having different diameters, and has a function of winding the long film 24a around the outer peripheral surfaces of the winding cores 28a and 28b so as to be wound inside and outside. is doing. In the film winding mechanism 220, a special device is used for the first and second lower wrappers 222a and 222b and the upper wrapper 224.
[0076]
The first and second lower wrappers 222a and 222b include first and second drive cylinders 226a and 226b fixed at predetermined positions, and rods 228a extending from the first and second drive cylinders 226a and 226b, Bases 230a and 230b are fixed to 228b so as to be movable forward and backward in the direction of arrow A. On the bases 230a and 230b, movable bases 232a and 232b are mounted so as to be movable in the direction of arrow A along linear guides 234a and 234b via actuators such as cylinders (not shown).
[0077]
First and second fixed guide portions 236a and 236b are provided at the distal ends of the movable bases 232a and 232b, and first and second cylinders 238a and 238b are swingably mounted at the rear ends of the movable bases 232a and 232b. The The first and second movable guide portions 244a and 244b are fixed to the rods 240a and 240b of the first and second cylinders 238a and 238b via the connecting portions 242a and 242b. As shown in FIG. 20, the movable guide portions 244a and 244b are provided with guide bars 246a and 246b which are inclined in directions away from each other with respect to the vertical direction. The cylinders 248a and 248b formed in the second fixed guide portions 236a and 236b are inserted.
[0078]
First and second scanning rollers 92a and 92b are movably mounted on the distal ends of the first and second movable guide portions 244a and 244b via leaf springs 130a and 130b. The first and second movable guide portions 244a and 244b and the first and second fixed guide portions 236a and 236b overlap each other in a so-called comb shape, and each distal end portion has a large diameter side. Guide surfaces 250a, 250b, 252a, and 252b having a radius of curvature slightly larger than the outer peripheral radius of the core 28a are formed.
[0079]
First and second cylinders 256a and 256b are mounted on the frame 254 constituting the upper wrapper 224 so as to be inclined downward with respect to the horizontal direction. The first and second movable guide portions 260a and 260b are supported by rods 258a and 258b extending obliquely downward from the first and second cylinders 256a and 256b, respectively. The first and second movable guide portions 260a and 260b have guide surfaces 262a and 262b having a radius of curvature slightly larger than the outer peripheral radius of the core 28a.
[0080]
In the third embodiment configured as described above, first, when the long film 24a is wound around the outer peripheral surface of the winding core 28a on the large diameter side, for example, in the counterclockwise direction, it is shown in FIG. 19 and FIG. Thus, the film winding mechanism 220 is arranged. Specifically, as shown in FIG. 20, the first and second movable guide portions 260a connected to the rods 258a and 258b are driven by the first and second cylinders 256a and 256b constituting the upper wrapper 224. 260b are displaced in directions that are separated from each other and obliquely downward (see arrows). For this reason, the position of the guide surfaces 262a, 262b of the first and second movable guide portions 260a, 260b is adjusted corresponding to the outer peripheral surface shape of the core 28a on the large diameter side.
[0081]
Accordingly, as shown in FIG. 19, the first drive cylinder 226a is driven, the base 230a moves toward the core 28a, and the first movable guide portion 244a and the first fixed guide portion disposed on the base 230a. The guide surfaces 250a and 252a of 236a are arranged with a predetermined gap between the guide surfaces 250a and 252a and the outer peripheral surface of the core 28a, and the first copying roller 92a is in contact with the outer peripheral surface of the core 28a. . Further, under the driving action of the first drive cylinder 100a, the first nip roller 90a moves to the core 28a side and comes into contact with the outer peripheral surface of the core 28a, and the first introduction guide member 98a is attached to the core 28a. It arrange | positions corresponding to an outer peripheral part.
[0082]
Next, when the long film 24a is inserted between the core 28a and the second nip roller 90b, the second drive cylinder 100b is driven, and the second nip roller 90b causes the long film 24a to pass through the outer peripheral surface of the core 28a. In this state, the leading end of the long film 24a is cut as in the first embodiment. Further, the second drive cylinder 226b is driven, the second movable guide portion 244b and the second fixed guide portion 236b move to the core 28a side, and the end portion of the long film 24a from which the second scanning roller 92b is cut is moved. While being wound around the outer circumferential surface of the winding core 28a, the guide surfaces 250b and 252b of the second movable guide portion 244b and the second fixed guide portion 236b are disposed corresponding to the outer circumferential portion of the winding core 28a. Thereafter, similarly to the first embodiment, the core 28a is rotated counterclockwise, and the long film 24a is wound around the outer peripheral surface of the core 28a by a predetermined length.
[0083]
On the other hand, when the core 28b having a diameter smaller than that of the core 28a is used, as shown in FIG. 21, the first and second movable guide portions 260a and 260b constituting the upper wrapper 224 are used as the first and second cylinders. It moves to the frame 254 side via 256a, 256b, and the guide surfaces 262a, 262b are positioned corresponding to the outer peripheral surface shape of the core 28b. In the first and second movable guide portions 244a and 244b, the first and second cylinders 238a and 238b are driven to displace the rods 240a and 240b inward.
[0084]
Thus, the first and second movable guide portions 244a and 244b are obliquely upward with respect to the first and second fixed guide portions 236a and 236b under the guiding action of the guide bars 246a and 246b and the cylindrical portions 248a and 248b. Moving. Then, the movable bases 232a and 232b move by a predetermined distance toward the core 28b with respect to the bases 230a and 230b under the guiding action of the linear guides 234a and 234b. As a result, the guide surfaces 250a and 250b of the first and second movable guide portions 244a and 244b and the first and second copying rollers 92a and 92b are positioned corresponding to the outer peripheral shape of the core 28b. .
[0085]
As described above, in the third embodiment, the cores 28a and 28b having different outer diameters can be automatically and easily handled, and the winding direction of the long film 24a around the cores 28a and 28b can be changed. It becomes possible to switch automatically. Therefore, the change in the winding direction of the long film 24a and the winding cores 28a and 28b having different outer diameters can be automatically handled only by using the single film winding mechanism 220, and the entire film winding operation can be performed. While performing efficiently, the effect that it is excellent in versatility is acquired.
[0086]
In the first to third embodiments, the film winding apparatus 10 is incorporated in the film rewinding machine 12. However, even if this film winding apparatus 10 is incorporated in a cutting machine (not shown), the same effect is obtained. can get.
[0087]
【The invention's effect】
In the film winding apparatus according to the present invention, a plurality of rollers and a plurality of blocks are arranged on both sides of the winding core, and a long film can be automatically wound around the winding core in a desired winding direction. it can. Thus, it is possible to automatically cope with a change in the winding direction of the film and to wind the long film around the winding core with high accuracy and efficiency.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a schematic configuration of a film rewinding machine in which a film winding apparatus according to a first embodiment of the present invention is incorporated.
FIG. 2 is a diagram illustrating the configuration of the film winding apparatus.
FIG. 3 is an explanatory front view of a core rotating mechanism constituting the film winding apparatus.
FIG. 4 is a front explanatory view of a film winding mechanism constituting the film winding apparatus.
FIG. 5 is a perspective explanatory view of a lower trumpet constituting the film winding mechanism.
FIG. 6 is a perspective explanatory view of an upper wrapper that constitutes the film winding mechanism.
FIG. 7 is an operation explanatory diagram when a long film is fed out to the film winding mechanism.
FIG. 8 is an operation explanatory view when the end portion of the long film is made to follow the outer peripheral surface of the core.
FIG. 9 is an operation explanatory diagram when the long film is wound around a core.
FIG. 10 is an operation explanatory diagram when a wound body is received by the product receiving mechanism.
FIG. 11 is an operation explanatory diagram when the product receiving mechanism is lowered.
FIG. 12 is an operation explanatory view when cutting the long film.
FIG. 13 is an operation explanatory view when starting to wind the long film around the winding core.
FIG. 14 is an operation explanatory view when winding the long film around the core.
FIG. 15 is an operation explanatory diagram when the long film is fed out to the opposite side of the core and the core is rotated in the reverse direction.
FIG. 16 is a schematic explanatory view of a film winding mechanism incorporating another cutting mechanism.
FIG. 17 is an explanatory front view of a film winding mechanism constituting a film winding apparatus according to a second embodiment of the present invention.
FIG. 18 is a partial perspective view of the film winding mechanism.
FIG. 19 is a front explanatory view of a film winding mechanism constituting a film winding apparatus according to a third embodiment of the present invention.
FIG. 20 is a partially enlarged explanatory view when a long film is wound around a large-diameter side core by the film winding mechanism.
FIG. 21 is an explanatory view when a long film is wound around a small-diameter core by the film winding mechanism.
FIG. 22 is an explanatory view of main parts of a winding device according to a conventional technique.
FIG. 23 is an explanatory view showing a state in which an end portion of a long film wound around a winding core protrudes.
[Explanation of symbols]
10 ... Film winding device 12 ... Film rewinding machine
16, 24a, 24b ... long film 18 ... film delivery device
20 ... Conveying device 26 ... Cutting device
28, 28a, 28b ... core 30 ... wound body
30a, 30b ... Product 34 ... Main feed roller
38a, 38b ... rotating cutters 40a, 40b ... separation rollers
42a, 42b ... pair of nip rollers 64, 90a, 90b ... nip rollers
48 ... Core rotation mechanism
50, 200, 220 ... Film winding mechanism
52 ... Product receiving mechanism 54, 196 ... Cutting mechanism
56 ... Core supply mechanism 60 ... Pass roller
62 ... Moving means 67a, 67b ... Movable rollers
68a, 68b ... take-up chucks 92a, 92b ... copying rollers
94a, 94b, 222a, 222b ... lower trumpet
96, 224 ... Upper trumpet
98a, 98b, 202a, 202b ... introduction guide member
100a, 100b, 118a, 118b, 140, 226a, 226b ... drive cylinder
108a, 108b, 132, 208, 238a, 238b, 256a, 256b ... cylinder
124, 138: guide portion 128, 203 ... support plate
130, 130a, 130b ... leaf springs
137a, 137b, 204 ... Free roller
138, 198: Cutter 139: Film holding mechanism
150 ... Elevator 190 ... Air cylinder
194 ... Suction cup 199 ... Slide means
206 ... Spring 236a, 236b ... Fixed guide part
244a, 244b, 260a, 260b ... movable guide part

Claims (5)

A core rotation mechanism capable of holding the core and rotating the core in both directions;
When the core is rotated in one direction, a long film is wound around the core to a predetermined length in the one direction to obtain a wound body, and when the core is rotated in the other direction. A film winding mechanism that winds the long film around the core to a predetermined length in the other direction to obtain a wound body;
With
The film winding mechanism is disposed on both sides of the winding core, and a plurality of advanceable and retractable rollers that press and support the long film on the outer peripheral surface of the winding core;
A plurality of blocks which are arranged on both sides of the winding core and which can move forward and backward to form a gap for inserting the long film between the outer circumference of the winding core;
With
The rollers are disposed on both sides of the core, and when the long film is cut, the first and second nip rollers that are movable forward and backward to hold the long film on the peripheral surface of a new core;
First and second scanning rollers that are disposed on both sides of the core and that are capable of moving forward and backward to copy the end of the cut long film to the peripheral surface of the new core;
A film winding apparatus comprising:   The apparatus according to claim 1, wherein the block is configured such that the side on which the long film is inserted with respect to the core is disposed in the open position, and the side opposite to the insertion side is disposed in the closed position. A film winding apparatus comprising a first introduction guide member and a second introduction guide member.   3. The film winding apparatus according to claim 1, wherein the roller and the block are configured to be switchable in positions corresponding to an outer peripheral shape of the core having different diameters. The apparatus according to any one of claims 1 to 3, wherein a nip roller that guides the long film to the film winding mechanism;
Moving means for moving the nip roller forward and backward to distribute the long film to both sides of the core;
A film winding apparatus comprising: 5. The film according to claim 1, wherein the film is disposed on at least one side of the core, and sucks and holds the leading end of the long film and applies tension to the long film. A holding mechanism;
The long film is disposed in at least one side of the winding core, and the long film is cut in the width direction in a state where the long film is tensioned by the film holding mechanism, and the long film is formed on the winding core. A cutting mechanism that cuts the end of the wound body wound around the width direction,
A film winding apparatus comprising:

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