JP2013001475A - Web winding method and web winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively and effectively prevent the generation of winding wrinkles, bubbles, winding collapse and winding scratches or the like of a roll-like web.SOLUTION: While a web A is wound around the core B of a winding core 30, an encoder 51 for measuring a circumferential direction speed s of the winding core 30 is made to continuously transmit a pulse frequency w corresponding to the circumferential direction speed s toward an information processor 52. In the information processor 52, from a difference between the received pulse frequency w and the pulse frequency w received in the previous time, a position to position the winding core 30 is determined, a vertical movement device 53 is made to execute movement to the position to position the winding core 30, and the position of the winding core 30 is finely controlled.

Description

  The present invention relates to a web winding method and web winding capable of continuously winding a web around a winding core in a roll shape without causing winding wrinkles, bubbles, collapse, winding wounds, and the like. It relates to a take-off device.

  The technique of continuously winding a long web around a core in a roll shape has a problem that winding wrinkles, bubbles, collapse, winding wounds, and the like occur as the roll is thickened. In order to solve such problems, various approaches as disclosed in the following Patent Documents 1 to 4 have been proposed.

JP 2002-53253 A JP 2004-67367 A JP 2000-44117 A JP-A-5-186115

  In Patent Document 1, prior to rotating the take-up roller at a normal take-up speed, control means for rotating the take-up roller at a speed slower than the normal take-up speed for a certain period of time is provided. By calculating the web winding diameter of the take-up roller and accelerating the web winding to the normal winding speed based on this winding diameter, the web breakage, wrinkle generation, and winding failure are suppressed. An invention relating to a web winding device capable of stably performing high-speed winding is proposed.

  In Patent Document 2, an optimal pressing force is calculated from the radius and outer peripheral speed of the winding roll, and an appropriate pressing force is applied to the pressing roll that presses the outer periphery of the winding roll in a timely manner. An invention relating to a film winding device and a winding control method for preventing wrinkles has been proposed.

  In Patent Document 3, although a winding object is not a web but a bead wire, stock means for stocking a product member is provided between the conveying means and the winding means, and the rate of change of the product member stocked in this stock means The shaft winding device and the shaft winding control method for the shaft winding device that calculate the winding diameter from this rate of change and control the winding rotation speed so as not to adversely affect the quality of the product member The invention which concerns on is proposed.

  In Patent Document 4, the core raising braking means for raising the take-up core is controlled by a microprocessor according to the detected diameter information for detecting the diameter of the roll-shaped long belt. At the stage, the roll-like long band is pressed against the drum so that it becomes dense, and at the stage where the diameter becomes large, the contact surface with the drum is not slightly deformed by the weight and is slightly lifted within the range that keeps the contact. In short, there has been proposed an invention relating to a low-friction long belt winder in which the core raising braking means is controlled by a microprocessor so that the core can be wound so as not to collapse even at a high speed.

  In addition, the diameter of the roll-like long belt is detected from the weight (basis weight) of the web wound around the core continuously in a roll shape, and the core is controlled by a microprocessor according to this detection information. There are also known approaches to raising the level. For example, as shown in FIG. 4, as a highly versatile approach of winding a long web A continuously around the winding core 30 in a roll shape, it moves up and down with the winding thickness of the winding core 30. A technique is also known in which a sensor 43 is arranged on a sprocket or chain wheel 42 that meshes with the chain 41 and the winding core 30 is controlled and raised from the movement of the sprocket or chain wheel 42.

  However, in addition to the approaches proposed in the above-mentioned Patent Documents 1 to 4 and others, means for preventing the occurrence of winding wrinkles, bubbles, collapse, winding wounds, etc. From the viewpoint of quality improvement. In particular, the approaches proposed in the above-mentioned Patent Documents 1 to 4 have a problem that considerable investment is required for facilities, such as the necessity to apply power to each component including the core. Furthermore, when the predetermined winding diameter is exceeded, there is a problem that it is difficult to suppress the occurrence of winding wrinkles, bubbles, collapse, winding wounds, and the like. In addition, in the approach of detecting the diameter of the roll-shaped long belt from the weight (basis weight) of the web continuously wound around the core in a roll shape, the web weight (basis weight) varies to some extent. Therefore, it has been pointed out that it is difficult to precisely control the position of the core, and there is a limit in improving the accuracy of the position control of the core in the approach in which the sensor is arranged on the sprocket or the chain wheel.

  The present invention has been proposed in view of the above circumstances, and prevents winding wrinkles, bubbles, collapse, winding wounds, etc., when the web is continuously wound around the winding core in a roll shape. As a new approach, especially when the wound roll web has a large diameter, that is, even if there is no restriction on the winding diameter, it is possible to prevent winding wrinkles, bubbles, collapse, winding wounds, etc. An object of the present invention is to provide a web winding method and a web winding apparatus that can be achieved at low cost.

  In order to achieve the above object, the present invention provides a drawer drum for continuously pulling out a web, a feed drum that is arranged in parallel with the drawer drum, and feeds the web, and both the feed drum and the drawer drum. A web winding method in which the web is wound around the winding core using the winding core around which the web is wound by being rotated through the web. Calculating the diameter of the web wound around the winding core from the circumferential speed of the winding core, and moving the winding core to a predetermined position based on the calculated diameter of the web. Features.

  In the web winding method, the circumferential speed of the winding core being rotated is converted into a pulse frequency, the diameter of the web wound around the winding core is calculated from the pulse frequency, and the calculated web It is preferable to convert the work amount required for the movement of the winding core from the diameter to the predetermined position and move the winding core to the predetermined position based on the converted work amount.

  Further, the present invention provides a drawer drum for continuously drawing out the web, a feed drum that is arranged in parallel with the drawer drum, and feeds the web, and both the feed drum and the drawer drum via the web. And a winding core that winds the web around the winding core, the winding core being wound around the winding core. A control mechanism for calculating the diameter of the web wound around the winding core from the circumferential speed and moving the winding core to a predetermined position based on the calculated diameter of the web. And

  In particular, the control mechanism is connected to the winding core, converts the circumferential speed of the winding core into a pulse frequency and transmits the pulse, and receives the transmitted pulse frequency and winds around the winding core. Information processing means for calculating the diameter of the web, converting the calculated amount of work necessary for moving the winding core to a predetermined position from the calculated diameter of the web and transmitting it, and the winding core based on the transmitted amount of work It is preferable to comprise moving means for moving the to a predetermined position.

  The present invention relates to a draw-out drum that continuously draws out a web, a feed drum that feeds the web to the take-up core, and a take-up core around which the web is wound by being rotated via the web on both drums. Is a web winding method in which the web is wound with a winding core using In particular, the diameter of the web wound around the winding core is calculated from the circumferential speed of the winding core being rotated, and the winding core is moved to a predetermined position based on the calculated web diameter. The mechanism controls the position of the winding core precisely. Therefore, as compared with the conventional web winding method, it is possible to prevent winding wrinkles, bubbles, collapse, winding wounds, etc., even if the conventional method is improved without specially preparing new devices and equipment. be able to. Further, the diameter of the web wound around the winding core is calculated from the circumferential speed of the winding core being rotated, and the winding core is moved to a predetermined position based on the calculated web diameter. The new approach, focusing on the index of deceleration of the circumferential speed of the winding core due to winding thickening, can calculate the diameter of the web from this index of deceleration and perform the position control of the winding core, Precise control can be realized, and there is no restriction on the length of the web that can be wound (the diameter of the roll-shaped web formed). Therefore, even when the web is wound up to a large diameter, it is possible to effectively prevent winding wrinkles, bubbles, collapse, winding wounds, and the like.

  In the web winding method according to the present invention, preferably, the circumferential speed of the winding core is converted into a pulse frequency for the position control of the winding core, and the diameter of the web wound around the winding core from this pulse frequency. Is calculated from the calculated diameter of the web, and the amount of work required to move the winding core to a predetermined position is converted, and the winding core is moved to a predetermined position based on the converted amount of work. . Thus, the method using the pulse frequency can capture the reduction in the circumferential speed of the winding core relatively simply and inexpensively, so that precise control can be performed relatively simply and inexpensively. For this reason, it can be achieved at low cost to effectively prevent the occurrence of winding wrinkles, bubbles, collapse, winding wounds and the like.

  Furthermore, the present invention provides a drawing drum that continuously pulls out the web, a feed drum that feeds the web to the winding core, and a winding around which the web is wound by being rotated on both drums via the web. This is a web winding device that includes a winding core and winds the web with the winding core. In particular, the diameter of the web wound around the winding core is calculated from the circumferential speed of the winding core being rotated, and the winding core is moved to a predetermined position based on the calculated web diameter. A control device for controlling the position of the winding core is provided. Therefore, as compared with the conventional web winding device, it is possible to prevent winding wrinkles, bubbles, collapse, winding wounds, etc., even if the conventional device is improved without specially preparing new devices and equipment. be able to. Further, the diameter of the web wound around the winding core is calculated from the circumferential speed of the winding core being rotated, and the winding core is moved to a predetermined position based on the calculated web diameter. The control device pays attention to the index of deceleration of the circumferential speed of the winding core accompanying the winding thickening, and can calculate the diameter of the web from this index of deceleration to perform the position control of the winding core. Control can be realized, and there is no limitation on the length of the web that can be wound (the diameter of the roll-shaped web formed). Therefore, even when the web is wound up to a large diameter, it is possible to effectively prevent the occurrence of winding wrinkles, bubbles, collapse, winding wounds, and the like.

  In particular, the control mechanism is preferably connected to the winding core, measuring means for converting the circumferential speed of the winding core into a pulse frequency and transmitting, and receiving the pulse frequency and winding the winding core around the winding core. Information processing means for calculating the diameter of the web, converting the calculated amount of work necessary for moving the winding core to a predetermined position from the calculated diameter of the web and transmitting it, and the winding core based on the transmitted amount of work Is moved to a predetermined position, thereby controlling the position of the winding core. Since the control using the pulse frequency can capture the reduction in the circumferential speed of the winding core relatively simply and inexpensively, precise control can be performed relatively simply and inexpensively. For this reason, it can be achieved at low cost to effectively prevent the occurrence of winding wrinkles, bubbles, collapse, winding wounds and the like.

  In addition, in the present invention, by providing the above configuration, for example, even if an event such as sudden acceleration at the time of unwinding or an event such as sudden deceleration due to some cause occurs or is operated, the winding is continuously performed by the control mechanism Since the condition of the core is monitored, the winding core moves to a predetermined position in accordance with the event or operation. For this reason, it is possible to always prevent the occurrence of winding wrinkles, bubbles, collapse, winding wounds, etc., and to realize the winding of the web with a good yield.

1 is a schematic perspective view showing an overall outline of a web winding device according to the present invention. It is principal part explanatory drawing explaining the principal part of the web winding apparatus which concerns on this invention. It is a flowchart explaining the control mechanism of the web winding apparatus which concerns on this invention. It is a schematic perspective view which shows the general outline of the conventional web winding apparatus.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS A web winding apparatus according to the present invention and a web winding method performed using the web winding apparatus will be described below with reference to the drawings with reference to an embodiment for winding a paper web. It should be noted that the present invention includes a number of embodiments, and the embodiments described below are merely examples that embody the configuration of the present invention. In other words, various design changes can be made to the present invention without departing from the matters described in the claims. The same or corresponding parts as those in the web winding device shown as the conventional example in FIG.

  As shown in FIGS. 1 and 2, the web winding device according to the present invention is arranged in parallel with the drawing drum 10 for continuously pulling out the web A and the drawing drum 10, and the air is supplied to the winding core 30. The feed drum 20 that feeds the web A while preventing the occurrence of winding wrinkles by spraying the web A, and the web A is wound around the feed drum 20 and the pull-out drum 10 by being rotated via the web A. The winding core 30 is attached. Further, for example, a rubber roller 31 as a follower member is connected to the winding core 30 so as to rotate as the winding core 30 rotates. At a position where the rotation of the rubber roller 31 can be measured, an encoder 51 serving as a measuring unit that is a component of the control mechanism 50 is provided. In the web winding device 1 according to the present invention, the state of deceleration of the circumferential speed s of the winding core 30 is sequentially grasped by the control mechanism 50 including the encoder 51 with the winding (winding) of the web A. The position where the winding core 30 should be positioned is precisely controlled from the state of the deceleration, and the occurrence of winding wrinkles, bubbles, collapse, winding wounds, etc. generated on the web A wound around the winding core 30 is prevented. A mechanism to remarkably suppress is established.

  Hereinafter, each component of the web winding device 1 will be described with reference to FIGS. 1 and 2.

  First, the drawing drum 10 and the feeding drum 20 are individually rotated in the same direction by two output shafts of a power machine 60 whose input shaft is driven by a motor via a transmission mechanism 61 composed of a V-belt and a pulley. Be made. Note that the peripheral speed of the feed drum 20 is preferably slightly larger than that of the feed drum 10. This is because the web A is prevented from being collapsed at the winding core 30.

  The drawing drum 10 is a cylindrical drum that continuously pulls out the web A that is fed and feeds the web A toward the feeding drum 20. In the drawing drum 10, for example, a high friction material such as a rubber material is attached to the outer peripheral surface, and a number of suction holes are formed from the outer peripheral surface toward the inner cavity portion. It is preferable that a flexible tube connected to the suction pump is provided in the lumen. Accordingly, if the suction pump is driven during the operation of the web winding device 1, the web A sticks to the suction hole, that is, the web A can be adsorbed to the outer peripheral surface of the drawing drum 10. Can be smoothly pulled out and fed toward the feed drum 20.

  The feeding drum 20 is a cylindrical drum that is arranged in parallel to the drawing drum 10 and feeds the web A toward the winding core 30. When the web A is fed toward the take-up core 30, the generation of wrinkles is prevented by the interaction between the rotational speed of the feed drum 20 and the blowing of air toward the take-up core 30 from the outside. However, the winding core 30 is allowed to wind the web A at high speed. Note that both the drawing drum 10 and the feeding drum 20 are held horizontally in the web winding device 1 via left and right support shafts and bearings. Also, the suction drum 20 has a number of suction holes formed from the outer peripheral surface toward the lumen portion, and a flexible tube having one connected to the suction hole and the other connected to the suction pump is formed in the lumen portion. It is preferable that the web A can be adsorbed to the outer peripheral surface of the feed drum 20 by driving the suction pump during the operation of the web winding device 1. Smooth feeding toward the winding core 30 is possible.

  The winding core 30 includes a shaft portion 30a for fixing the core B such as a paper tube via a mechanical chuck, an air bag chuck, and the like, and a circular main body portion 30b that passes through the shaft portion 30a and rotates around the shaft portion 30a. Are integrally formed, and are provided in a pair on the web winding device 1 so that the core B can be fixed from both axial ends of the core B. The winding core 30 is rotated on the both drums 10 and 20 via the web A. Specifically, both the drawing drum 10 and the feeding drum 20 are brought into contact with each other via the web A, and both drums It is rotated at high speed by the power transmitted to. In the winding core 30, the circular main body 30 b is rotatably supported by the bearing block 32 until the web A is wound around the core B to a predetermined diameter. A rubber roller 31 that rotates with the rotation of the winding core 30 is in contact with at least one circular main body 30b of the winding core 30 provided in a pair at the circumferential end. The circumferential speed st at which the rubber roller 31 rotates is measured by the encoder 51 of the control mechanism 50. The bearing block 32 is attached to and supported by a chain 531 of a vertical movement device 53 as a moving means described later.

  The control mechanism 50 measures the circumferential speed s of the wound winding core 30 through the rubber roller 31, converts it into a pulse frequency w, and transmits the encoder 51, and transmits from the encoder 51. The pulse frequency w is received, the diameter of the web A wound around the winding core 30 (web diameter d) is calculated, and it is necessary to move the winding core 30 from the calculated web diameter d to a predetermined position. Information processing device 52 as information processing means for converting and transmitting work j, chain 531 and sprocket or chain for moving winding core 30 to a predetermined position based on work j transmitted from information processing device 52 The wheel 532 includes a vertical movement device 53 including, for example, a servo motor 533 as a power source for moving them. The functions of these components are outlined below with reference to FIG.

  The encoder 51 measures the circumferential speed st at which the rubber roller 31 rotates as described above. By multiplying the circumferential speed st by a predetermined coefficient α determined from the rotation ratio between the rubber roller 31 and the winding core 30, the circumferential speed s of the winding core 30 is derived. The encoder 51 that has measured the circumferential speed st calculates the circumferential speed s of the winding core 30 and transmits a predetermined pulse frequency w corresponding thereto to the information processing apparatus 52 by wire or wirelessly.

  The information processing apparatus 52 includes, for example, a microprocessor, so that the web diameter d wound around the winding core 30 is first derived from the pulse frequency w received from the encoder 51, and further derived from the web diameter d. The position where the winding core 30 should be positioned is determined. Further, a difference Δ between the determined position where the winding core 30 should be positioned and the position where the winding core 30 determined based on the pulse frequency w previously received from the encoder 51 is calculated is calculated. Based on this, the work amount j necessary for the movement of the winding core 30 to the determined position is converted, and the servo motor 533 that is the power source of the vertical movement device 53 is instructed to drive only the necessary work amount j.

  When the servo motor 533 receives an instruction from the information processing device 52 to drive the required amount of work j, the vertical movement device 53 moves the chain 531 and the sprocket or chain wheel 532 in accordance with the drive of the servo motor 533, The bearing block 32 attached to and supported by the chain 531 is moved in the vertical direction (vertical direction) together with the winding core 30 supported by the bearing block 32. As a result, the winding core 30 moves in the vertical direction (vertical direction) by the difference Δ calculated by the information processing device 52 and moves to the position where the information processing device 52 should be positioned. As a result, the position of the winding core 30 that changes with the winding of the web A is precisely controlled using the deceleration of the circumferential speed w accompanying the winding of the winding core 30 as an index.

  Hereinafter, a web winding method using the web winding apparatus according to the present invention will be briefly described.

  First, the core B is set on the winding core 30, and the drawer drum 10 and the feed drum 20 are driven by the power machine 60. The speed at which the drawer drum 10 and the feed drum 20 are driven by the two output shafts of the power machine 60 is always constant. Next, the web A is continuously pulled out by the drawing drum 10 and sent to the feeding drum 20. The web A sent to the feed drum 20 is sequentially sent to the take-up core 30 while preventing the occurrence of winding wrinkles by rotating the feed drum 20 and blowing air. The winding core 30 starts to be rotated via the web A when the web A is continuously drawn out by the drawing drum 10 and sent to the feed drum 20. The web A is gradually thickened by the winding core 30.

  In the process in which the web A is wound around the core B of the winding core 30 and is thickened, the rubber roller 31 that is in contact with the circumferential end of the circular main body 30 b of the winding core 30 is wound on the winding core 30. Therefore, the circumferential speed st at which the rubber roller 31 rotates is continuously measured by the encoder 51 of the control mechanism 50. Since the speed at which the drawing drum 10 and the feeding drum 20 are driven is always constant, the circumferential speed s of the winding core 30 is increased as the web A winds around the winding core 30 and becomes thicker. Decelerate.

  Then, the encoder 51 calculates a circumferential speed s of the winding core 30 by multiplying the circumferential speed st at which the rubber roller 31 rotates by a predetermined coefficient α, and corresponds to the circumferential speed s of the winding core 30. The pulse frequency w to be transmitted is transmitted to the information processing device 52 by wire or wireless.

  The information processing apparatus 52 that has received the pulse frequency w calculates the web diameter d wound around the winding core 30, and determines the position where the winding core 30 corresponding to the calculated web diameter d is to be positioned. Further, the determined position of the winding core 30 is determined from the difference Δ between the determined position where the winding core 30 should be positioned and the position where the winding core 30 should be positioned derived from the pulse frequency w previously received from the encoder 51. The work j required for the movement to the position is converted, and the servo motor 533 of the vertical movement device 53 is instructed to drive only the necessary work j.

  Subsequently, based on an instruction from the information processing device 52, the vertical movement device 53 moves the sprocket or chain wheel 532 so that the chain 531 moves in the vertical direction (vertical direction), and this movement causes the bearing block 32, the winding core to move. 30 is interlocked, and the winding core 30 moves to the position where the information processing device 52 should be determined. Thereby, the position of the winding core 30 can be precisely controlled using as an index the deceleration of the circumferential speed w of the winding core 30 as the web A is thickened.

  As described above, in the web winding method according to the present invention, the encoder 51 is constantly caused to transmit the pulse frequency w corresponding to the circumferential speed s of the winding core 30 toward the information processing device 52, and the information processing device 52. , The position where the winding core 30 should be positioned is determined from the received pulse frequency w and the previously received pulse frequency w, and the vertical movement device 53 moves to the position where the winding core 30 should be positioned. Thus, the position of the winding core is sequentially controlled. As a result, in the process in which the web A is wound around the core B of the winding core 30, the position of the winding core 30 can be continuously controlled, and precise control can be realized. After the web A is wound around the core B to a predetermined diameter, the core B around which the web A is wound from the winding core 30 is removed by removing the bearing block 32 from the chain 531 of the vertical movement device 53. Can be removed.

  Therefore, the web winding device and the web winding method according to the present invention can be provided as a new approach for preventing the occurrence of winding wrinkles, bubbles, collapse, winding wounds and the like. In particular, by paying attention to the index of the reduction in the circumferential speed s of the winding core 30 due to the thickening of the winding, the web diameter d can be calculated from this index and the position control of the winding core 30 can be performed accurately. Control can be realized. Further, the circumferential speed s of the winding core 30 is converted into a pulse frequency w, the diameter d of the web wound around the winding core 30 is calculated from the pulse frequency w, and the winding core is calculated from the calculated web diameter d. Converting the work j required for the movement to the position where 30 should be located and moving to the position where the winding core 30 should be located based on the converted work j is a relatively simple pulse frequency w. Moreover, since it can be executed continuously by using inexpensive means, it is possible to effectively and inexpensively prevent the occurrence of winding wrinkles, bubbles, collapse, winding wounds and the like. By continuously monitoring the circumferential speed s, web diameter d, position to be positioned, etc. of the winding core 30 by the control mechanism 50, an event such as sudden acceleration or sudden deceleration occurs or is operated. However, since the winding core 30 is automatically moved to a position where the winding core 30 should be located in accordance with the event or operation, it is possible to prevent the product from being adversely affected by an unexpected event or the like.

  Although one embodiment of the present invention has been described above, as described above, the present invention can be modified without departing from the matters described in the claims. For example, in the described embodiment, the circumferential speed of the winding core is calculated by multiplying the circumferential speed of the rubber roller by a predetermined coefficient, and a pulse frequency corresponding to the circumferential speed of the winding core is transmitted to the encoder. However, even if the encoder is configured to transmit the pulse frequency corresponding to the circumferential speed of the rubber roller, assuming that the circumferential speed of the rubber roller corresponds to the circumferential speed of the winding core as it is, the winding core Precise position control is possible. Further, in the described embodiment, the work amount to be converted in the information processing device, the position where the winding core determined this time should be positioned, and the position where the winding core determined based on reception of the previous pulse frequency should be positioned However, it is also possible to derive from the difference in pulse frequency between this time and the previous time. In addition, the web wound around the winding core in the present invention can be applied as long as it has a small thickness such as a paper, a film, or a fabric such as a woven fabric or a knitted fabric.

  In addition, encoders, information processing devices, chains of vertical movement devices, sprockets or chain wheels, servo motors, etc., which are various parts constituting the control mechanism, may use known means as appropriate, and conventional web winding devices If the present invention is configured by improving the above, it is expected that it can be constructed at a lower cost.

DESCRIPTION OF SYMBOLS 1 ... Web winding device 10 .. Drawer drum 20 .... Feed drum 30 .. Winding core 30a. Shaft part 30b. Circular body part 31 .. Rubber roller (rolling member)
32 ・ ・ Bearing block 41 ・ ・ Chain (conventional)
42 .. Sprocket or chain wheel (conventional)
43. ・ Sensor (conventional)
50 ·· Control mechanism 51 · · Encoder (measuring means)
52 .. Information processing device (information processing means)
53 .. Vertical movement device (moving means)
531-Chain 532-Sprocket or chain wheel 533-Servo motor (power source)
60..Power machine 61..Transmission mechanism A ... Web B ... Core d ... Web diameter j ... Work amount s ... Circumferential velocity (circumferential velocity of winding core)
st ... Circumferential speed (Rubber roller circumferential speed)
w ・ ・ ・ pulse frequency Δ ・ ・ ・ difference

Claims (4)

A drawing drum that continuously pulls out the web, a feeding drum that is arranged in parallel with the drawing drum, and that feeds the web, and is rotated on both the feeding drum and the drawing drum via the web. A web winding method for winding the web with the winding core using the winding core around which the web is wound,
The diameter of the web wound around the winding core is calculated from the circumferential speed of the winding core being rotated, and the winding core is placed at a predetermined position based on the calculated diameter of the web. Move the
A web winding method characterized by that. The circumferential speed of the winding core being rotated is converted into a pulse frequency, the diameter of the web wound around the winding core is calculated from the pulse frequency, and the diameter of the web is calculated from the calculated diameter of the web. The amount of work required to move the winding core to a predetermined position is converted, and the winding core is moved to a predetermined position based on the converted amount of work.
The web winding method according to claim 1. A drawing drum that continuously pulls out the web, a feeding drum that is arranged in parallel with the drawing drum, and that feeds the web, and is rotated on both the feeding drum and the drawing drum via the web. And a winding core around which the web is wound, and a web winding device for winding the web with the winding core,
The diameter of the web wound around the winding core is calculated from the circumferential speed of the winding core being rotated, and the winding core is placed at a predetermined position based on the calculated diameter of the web. A control mechanism for moving
A web winding device. The control mechanism is connected to the winding core, converts the circumferential speed of the winding core into a pulse frequency and transmits the measurement means, receives the transmitted pulse frequency, and winds the winding core around the winding core. Information processing means for calculating the diameter of the attached web, and converting and transmitting the amount of work necessary for movement of the winding core from the calculated diameter to a predetermined position; and the amount of work transmitted And moving means for moving the winding core to a predetermined position based on
The web winding device according to claim 3.

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