JP3627155B2 - Film winding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a winding device for a rotary press, and more particularly to a winding device for a film in a gravure printing machine or the like.
[0002]
[Prior art]
Conventionally, a winding device such as a printing machine or a coating machine that handles a plastic film or the like needs to be wound up relatively softly or air is trapped. Is likely to occur. This winding misalignment deteriorates the appearance of the roll and causes troubles in the next process and transportation. When a large misalignment occurs, the winding is interrupted or the wound product becomes defective. In order to prevent the occurrence of such winding deviation, it is common to wind by applying a circular side plate made of cardboard or other thick paper, plywood or plastic resin on both sides of the take-up roll. It is. In addition, in the winding device equipped with an automatic winding device, a tapeless type winding device that does not use adhesive tape for the winding core, and an automatic detaching device for the winding roll, the side plates applied to both sides of the winding roll described above are used. Since it cannot be attached, a winding roll displacement is provided by providing a touch roll mechanism for contacting the rider roll with the take-up roll or a near roll mechanism for approaching the rider roll while maintaining a slight gap in the take-up roll. Winding devices that prevent rolling and improve the rolled-up appearance have been put into practical use.
[0003]
[Problems to be solved by the invention]
By the way, in the winding device using the rider roll functioning as the touch roll or the near roll, there is a real problem that it cannot be reduced below a certain degree of winding hardness. When winding thin, easily stretchable films, etc., it is required to reduce the winding tension, and in recent years there is a tendency to increase the maximum winding diameter from the viewpoint of productivity. The winding tension must be controlled so that the winding tension decreases with increasing thickness, and the winding must be performed with a soft winding hardness. For this purpose, a technique is adopted in which the rider roll is separated from the take-up roll in the middle of the take-up without taking up the rider roll in contact with the take-up roll until reaching the maximum winding diameter. In this case, since the conventional side plate is not applied to both sides of the take-up roll, there is a problem that if the rider roll is separated from the take-up roll, the occurrence of winding deviation cannot be prevented.
[0004]
On the other hand, in the stage of rewinding and initial winding, tightly winding a film or the like around the core is effective for preventing winding misalignment that causes a hollow in the bamboo shoot in the middle of winding. It is necessary to increase the contact pressure.
[0005]
Accordingly, an object of the present invention is to wind the film tightly around the core by increasing the contact pressure of the rider roll at the time of rewinding, and then winding the film as softly as possible by controlling the contact pressure of the rider roll to be weakened. Winding product that rolls up well without causing misalignment by means such as winding the auxiliary guide closer to both sides of the take-up roll when taking the rider roll away from the take-up roll to make it hard. Is to provide a film take-up device.
[0006]
[Means for Solving the Problems]
A winding device of a winding core driving system for handling a film, etc., and a rotatable rider roll that is in contact with the outer circumference of the winding roll being wound from the lateral direction, and this rider roll is arranged at one end and at the other end A pair of rider arms having a balance weight and pivotally mounted at an intermediate portion, an air cylinder connected to the rider arm to contact and release the rider roll, and high pressure air and control to the air cylinder A pneumatic piping system capable of switching and supplying micro-pressure air, and the rider arm is contacted with the winding roll core by high-pressure air when rewinding, and is wound by control micro-pressure air during winding The film winding device is in contact with the outer periphery of the roll.
[0007]
Further, a pair of guide members that are close to and face both sides of the winding roll, and hold the pair of guide members so as to be able to contact and separate from both sides of the winding roll, and both guides according to the width of the winding roll. A film winding device including a width determining mechanism for setting a distance between members.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a film winding apparatus according to the present invention will be described with reference to the drawings. FIG. 1 shows a two-arm turret type winding device, in which a winding core such as a paper tube attached to both ends of a winding arm turning around a main shaft is driven by a winding motor. The roll 12 is wound up. By adopting a DC motor or the like as the winding motor, automatic control is performed so that the winding motor is wound at a constant tension, a constant torque, a taper tension, or the like. Reference numeral 14 denotes a rewinding device. The winding roll 12 wound up to a predetermined amount is turned to the right side in FIG. 1 and the empty paper tube is turned to the left side to bring a rewinding arm equipped with rewinding means closer. Automatic rewinding is performed. Moreover, a tapeless type rewinding apparatus may be employ | adopted as needed. Further, there is a case where an unillustrated take-up roll automatic attaching / detaching device is provided to remove the right-hand take-up roll 12 after the take-up from the take-up arm and newly install an empty paper tube.
[0009]
Reference numeral 16 denotes a rider roll, which is rotatably disposed at the distal end portions of a pair of rider arms 20 rotatably attached to a shaft 18 provided on a side portion of an outfeed device adjacent to the two-arm winding device. The pressure is applied to the outer peripheral surface of the roll 12 from the lateral (horizontal) direction. A balance weight 22 is attached to the other end portion of the rider arm 20 that is extended to the opposite side of the rider roll 16 with the shaft 18 interposed therebetween, and the weight on the rider roll 16 side is canceled and balanced. Reference numeral 24 denotes a pair of air cylinders, each of which has a rod tip connected to an intermediate portion on the rider roll 16 side of each rider arm 20 and a rear end of the air cylinder attached to an outfeed device. The pneumatic cylinder 24 shown in FIG. 2 is supplied to the air cylinder 24 with high-pressure air at the time of rewinding, and control micro-pressure air is supplied during winding, and the rider roll 16 is brought into contact with the winding roll 12. .
[0010]
In FIG. 2, air set at a high pressure is supplied from the air source to the A port of the air cylinder 24 via the solenoid valve 26 and the regulator 28, and the solenoid valve 30, the regulator 32, and the check valve are supplied from the air source. This is a pneumatic piping system in which air set at a very low pressure is joined and supplied via 34. In this case, the check valve 34 functions so that the high-pressure air does not flow backward to the regulator 32 that supplies the minute low-pressure air. The B port of the air cylinder 24 is provided with a pneumatic piping system through which air set at a lower pressure than the regulator 32 is supplied from an air source via an electromagnetic valve 36 and a regulator 38.
[0011]
Therefore, the operation of the rider roll 16 will be described. At the time of rewinding, as described above, the take-up roll 12 wound up to the right by a predetermined amount in FIG. The rewinding arm is moved close and the cutter and brush of the rewinding means are operated by the rewinding signal to perform automatic rewinding. At this time, the rider roll 16 is pressed against the core (empty paper tube). The high pressure air set by the regulator 28 via the solenoid valve 26 and the fine pressure air set by the regulator 32 via the solenoid valve 30 merge and are supplied from the air source to the A port of the air cylinder 24. The B port side is discharged with the solenoid valve 36 in the OFF state (right position). As a result, a strong contact pressure by the high-pressure air acts on the rider roll 16 so that the film or the like is firmly wound around the core. In this way, at the time of rewinding and at the initial winding stage, the rider roll 16 is strongly brought into contact with the winding roll 12, so that winding misalignment that causes a hollow in the bamboo shoot state due to winding tightening during winding is performed. The factor is prevented.
[0012]
Next, during normal winding after the initial winding stage, the solenoid valve 26 that has been connected to the A port of the air cylinder 24 by a preset rotation amount after the winding or a lapse signal such as a timer. Is switched to the OFF state (right position) to cut off the supply of high-pressure air, and only the air set to a slight pressure by the regulator 32 is supplied to the A port via the solenoid valve 30. Therefore, the rider roll 16 is brought into contact with the winding roll 12 during winding at a controlled fine pressure, and air entrainment is suppressed in a relatively soft winding hardness state to prevent winding deviation. Then, a rolled product with a good roll-up shape is rolled up.
[0013]
In this case, the solenoid valve 36 that is electrically connected to the B port of the air cylinder 24 is switched to the ON state (left position), and the air set by the regulator 38 with a pressure lower than that of the regulator 32 by the regulator 38 is supplied to the rider roll 16. Supplied as return pressure. As a result, the contact pressure (pressing) acting on the rider roll 16 is reduced by the fine control pressure set by the regulator 32 supplied to the A port of the air cylinder 24. In this way, the contact pressure of the lidar roll 16 acting on the winding roll 12 during winding is controlled to a very low pressure, so that a softer winding hardness can be obtained in a winding apparatus that handles films and the like. It becomes possible. Further, it is clear that contact pressure control such as using an electro-pneumatic conversion type regulator to respond to the winding diameter by an electric signal can be performed to upgrade and automate.
[0014]
On the other hand, as described above, even when the contact pressure control of the lidar roll 16 is performed and a wound product having the softest winding hardness is obtained, it is particularly required from the standpoint of quality maintenance by a film or the like. In some cases, a soft winding hardness cannot be obtained. In this case, the rider roll 16 is separated from the take-up roll 12 and the take-up is performed. Therefore, the auxiliary guide device 40 provided so as to approach both sides of the winding roll 12 so as not to cause winding misalignment will be described. An auxiliary guide device 40 is provided so as to approach from below the winding roll 12 on the winding side (left side in the figure) in FIG. The configuration will be described in detail with reference to FIG.
[0015]
In FIG. 3, a pair of brackets 42 are attached on the stays of the two-arm winding device, and screw shafts 44 are pivotally supported by bearings provided at the upper ends of the brackets 42. Nuts 46 and 48 are screwed onto the screw shaft 44, one of which is a right screw and the other is a left screw, and a handle 50 is provided at one shaft end. One arm 52 is attached to one nut 46, the other arm 54 is supported to the other nut 48 via an adjustment screw 56, and guide shafts 58 each supported by the bracket 42 at both ends are provided on the arm 52. , 54 is movably inserted, and by rotating the handle 50, the interval between the arms 52, 54 is set freely. In FIG. 3, only one guide shaft 58 is shown, but it is natural that two guide shafts 58 should be provided on both sides along the screw shaft 44. A pair of guide members 60 that are connected to each other through pins provided at the distal ends of the arms 52 and 54 and face each other are connected between the guide member 60 and the arms 52 and 54. It is possible to swing toward the take-up roll 12 by the expansion / contraction operation by the operation (see FIG. 1). Further, as shown in FIG. 4, the guide member 60 includes a plurality of small rotating rollers 64 divided into a plurality of rows arranged in parallel on one shaft.
[0016]
The auxiliary guide device 40 configured as described above has a mechanism for determining the width of the guide members 60 on both sides facing each other according to the width of the take-up roll 12, and the arms 52 and 54 on which the guide member 60 is held. By rotating the screw shaft 44 screwed by the right and left screws of the nuts 46 and 48 provided on the shaft with the handle 50 at the shaft end, the interval between the guide members 60 facing each other is expanded or reduced, and the winding roll 12 The width is set appropriately. When the width of the guide member 60 is determined, if the width of the guide member 60 cannot be adjusted depending on the installation of the take-up roll 12, the arm 54 on one side can be finely adjusted with the adjusting screw provided on the nut 48. it can. Therefore, by operating the air cylinder 62 linked to the guide member 60 and the arms 52 and 54, the guide members 60 pin-coupled to the distal end portions of the arms 52 and 54 are swung, and the winding roll 12 is moved. Approached on both sides. Therefore, even when the rider roll 16 is wound away from the take-up roll 12, the auxiliary guide device 40 approaches the both sides of the take-up roll 12, so that winding slip does not occur and is soft. A wound product with a good winding appearance can be obtained with the winding hardness. The rotating roller 64 of the guide member 60 is brought into rotational contact with the side surface of the take-up roll 12 and the divided rotary rollers 64 are individually rotated at different peripheral speeds depending on the contact position in the radial direction of the take-up roll 12. Therefore, the side surface of the winding roll 12 and the guide member 60 are prevented from being damaged by the contact frictional heat.
[0017]
【The invention's effect】
As described above, according to the film winding device of the present invention, the lid roll that is in contact with the take-up roll is firmly attached to the core by increasing the contact pressure of the rider roll during rewinding. Winding, and then the rider roll contact pressure can be controlled so that the rider roll contact pressure is weakened, so that the rider roll contact pressure can be switched as much as possible. By using means such as bringing the auxiliary guide closer to both sides of the winding roll, there is an effect that a wound product with a good rolled up form can be obtained without causing winding deviation.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of a film winding device according to the present invention.
FIG. 2 is a schematic view including a pneumatic system of a portion related to the rider roll 16 of FIG. 1;
FIG. 3 is a schematic view of a portion related to the auxiliary guide device 40 of FIG. 1;
4 is a schematic view related to the guide member 60 of FIG.
[Explanation of symbols]
12 Winding Roll 14 Rewinding Device 16 Rider Roll 18 Shaft 20 Rider Arm 22 Balance Weight 24 Air Cylinders 26, 30, 36 Solenoid Valves 28, 32, 38 Regulator 34 Check Valve 40 Auxiliary Guide Device 42 Bracket 44 Screw Shafts 46, 48 Nut 50 Handle 52, 54 Arm 56 Adjustment screw 58 Guide shaft 60 Guide member 62 Air cylinder 64 Rotating roller

Claims (2)

A winding device of a winding core driving system for handling a film, etc., and a rotatable rider roll that is in contact with the outer circumference of the winding roll being wound from the lateral direction, and this rider roll is arranged at one end and at the other end A pair of rider arms that have a balance weight and are pivotally mounted at an intermediate portion, an air cylinder that is connected to the rider arm to contact and release the rider roll, and high-pressure air and control to the air cylinder A pneumatic piping system capable of switching and supplying micro-pressure air, and the rider arm is contacted with the winding roll core by high-pressure air when rewinding, and is wound by control micro-pressure air during winding A film winding device, wherein the film is pressed against the outer periphery of the roll. A pair of guide members that are close to and faces both sides of the take-up roll, and hold the pair of guide members so as to be able to contact and separate from both sides of the take-up roll, and according to the width of the take-up roll, The film winding device according to claim 1, further comprising a width determining mechanism for setting the interval.

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