JP2005089169A - Web delivery method and delivery machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently run short of a web wound like a coil. <P>SOLUTION: A pulse generator 39 is attached to one of pass rollers 38 disposed on a conveyance route of a web delivery machine 10. Delivery speed of an aluminum web 11 and deceleration start residual length for starting the reduction of the delivery speed are stored in relationship to each other in a memory 45 for controlling the delivery speed in a system controller 40 so as to allow delivery to be stopped at a terminal end of the aluminum web 11 delivered at this delivery speed. The system controller 40 calculates the residual length of the aluminum web 11 based on a pulse signal from a pulse generator 39. When the residual length calculation result matches with the deceleration start residual length corresponding to the delivery speed, the system controller 40 reduces the delivery speed. Therefore, the aluminum web 11 can be efficiently run short. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a web feeding method and a feeding machine that sequentially unwinds web coils and feeds the web.

  When manufacturing photosensitive materials, photoengraving materials, magnetic recording materials, recording paper materials, photosensitive lithographic printing plates (hereinafter simply referred to as PS plates), webs such as thin metal plates, paper, and films are used in the longitudinal direction. Various processes are performed while continuously running. For example, in the PS plate production line, an aluminum web made of an aluminum material in a strip-like thin plate is used as a support for the PS plate. The aluminum web is wound in a roll shape and sent out from the aluminum coil set in the web feeder toward the production line.

  In this web delivery machine, for example, as described in Patent Documents 1 and 2, when the remaining length of the aluminum web remaining in the aluminum coil becomes a predetermined length or less, the delivery of the aluminum web is temporarily stopped. The end portion of the aluminum web is cut. And the front-end | tip part of the subsequent aluminum web sent out from another aluminum coil is joined to the terminal part of the cut | disconnected aluminum web, and the subsequent aluminum web is continuously sent following the preceding aluminum web. Moreover, when the terminal part of the preceding aluminum web is cut, the aluminum web remaining on the winding core side of the aluminum coil is disposed as a loss.

JP 2000-351497 A (page 4) Heisei 10-53365 (6th page)

  By the way, due to the diversification of production varieties in recent years, the aluminum web delivery speed is set to various speeds from low speed to high speed depending on the difference in thickness and width size even in the same kind and the same kind. In the conventional web sending machine, the remaining length of the web is calculated, and deceleration is started when the calculated remaining length reaches a predetermined value. For this reason, when the deceleration start timing is set based on the web type of the high-speed transmission, there is a problem that a large amount of web returns remaining in the paper tube occurs in the case of the web type of the low-speed transmission. On the other hand, if the deceleration timing is set based on the web type of low-speed transmission, all webs are transmitted during deceleration in the case of the web type of high-speed transmission. In this case, the trailing edge of the web that is being fed is missed, and it becomes impossible to join the leading edge of the next web, resulting in a significant reduction in productivity. Therefore, in this production line, in order to avoid poor bonding, the remaining length is set to the type that is sent at the highest speed regardless of the change in the sending speed. Therefore, a countermeasure for reducing the amount of aluminum web remaining in the paper tube has been desired.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a web feeding method and a feeding machine in which the amount of web remaining in the paper tube during web joining is minimized.

  The web sending method and the sending machine according to the present invention, in a web sending method for sending webs sequentially from a web coil, have a substantially constant remaining amount when the web is stopped by decelerating at a constant deceleration rate from the web sending speed. The remaining web deceleration start remaining length is obtained, the remaining web length is detected, and when the detected remaining web length becomes the remaining web deceleration start remaining length, deceleration is started at the constant deceleration rate. The web feed speed is preferably determined in advance according to the type of web coil, and the web deceleration start remaining length is determined for each type of web coil. Furthermore, it is preferable that the web deceleration start remaining length includes a web feed length and a reserve remaining length until the web stops when the web is decelerated at the constant deceleration rate from the web feed speed.

  Further, the present invention provides a web feeder for sequentially sending webs from a web coil, and a remaining length detecting means for detecting the remaining length of the web coil, and the web is stopped by decelerating at a constant deceleration rate from the web sending speed. Deceleration start control that obtains a web deceleration start remaining length that becomes a substantially constant remaining amount when the remaining length is detected, and starts deceleration at the constant deceleration rate when the remaining length detected by the remaining length detection means reaches the web deceleration start remaining length. Means. Preferably, the web feed speed is determined in advance according to the type of web coil, and the deceleration start control means obtains the web deceleration start remaining length for each type of web coil. Furthermore, it is preferable that the web deceleration start remaining length includes a web feed length and a spare remaining length until the web stops when the web is decelerated at the constant deceleration rate from the web delivery speed.

  The web feeding method and the sending machine according to the present invention obtains a web deceleration start remaining length that becomes a substantially constant remaining amount when the feeding speed of the web delivered from the web coil is decelerated at a constant deceleration rate, When the web deceleration start remaining length is reached, the vehicle is decelerated at the constant deceleration rate, so that deceleration can be started with the remaining length corresponding to the sending speed regardless of the type of web. As a result, since the web can be used up efficiently, the production cost can be reduced, and further, the labor of unwinding work by the operator can be reduced.

  FIG. 1 is a schematic view of a web feeder 10 of a PS plate production line embodying the present invention. The web sending machine 10 is provided in the uppermost stream of the PS plate production line, and includes a biaxial turret type sending device 14 and a joining device 15 as shown in FIG. This web sending machine 10 joins the end part of the following 2nd aluminum web 11b to the termination part of the 1st preceding aluminum web 11a, and sends out aluminum web 11 continuously to a conveyance line.

  The turret 18 of the delivery device 14 is provided with two shafts 19 and 20 at a pitch of 180 °. The shafts 19 and 20 roll the first aluminum web 11a and the second aluminum web 11b, respectively. A first aluminum coil 23a and a second aluminum coil 23b wound in a shape are set. The shafts 19 and 20 are rotationally driven by motors 25a and 25b, respectively, and when the shafts 19 and 20 are rotated in the clockwise direction in the figure, the aluminum web 11 is fed out from the aluminum coils 23a and 23b. Conversely, when the shafts 19 and 20 are rotated counterclockwise in the figure, the aluminum web 11 is rewound around the aluminum coils 23a and 23b.

  The turret 18 is rotatably attached to a shaft 18a, and the positions of the shafts 19 and 20 are changed when the turret 18 rotates 180 ° intermittently. As a result, the aluminum web 11 can be continuously fed out. In the present embodiment, when one of the shafts 19 and 20 is positioned on the upper side, the delivery position is set, and when the shaft 19 or 20 is positioned on the lower side, the standby position is set.

  The motors 25a and 25b include an inverter (registered trademark) that converts a direct current sent from a power source (not shown) into an alternating current of an arbitrary frequency. By controlling this frequency, the rotational speed of the motor, that is, The feeding speed of the aluminum web 11 can be freely controlled.

  The joining device 15 is provided on the conveyance path of the aluminum web 11, and the end cutter 27 that cuts the end portion of the preceding first aluminum web 11a and the end treatment that cuts the end portion of the subsequent second aluminum web 11b. An ultrasonic bonder 29 is provided on the downstream side of the conveyance path of the end portion 27 and the end cutter 27, and ultrasonically joins the end portion of the first aluminum web 11a and the end portion of the second aluminum web 11b.

  The front end processing unit 28 is disposed below the transport path of the aluminum web 11, and a suction table 32, a front end cutter 33, a positioning block 34, and the like are sequentially disposed along the transport direction of the second aluminum web 11b. The suction table 32 has a suction surface (not shown) on which a suction port is formed, and is connected to a pump (not shown) as suction means. The second aluminum web 11b fed from the aluminum coil 23b is conveyed until its tip is in contact with the right end of the positioning block 34 in the figure, and is then sucked by the suction surface of the suction table 32 and positioned at a predetermined position. The Next, the front end portion of the second aluminum web 11b is trimmed in the width direction by the front end cutter 33, and the preparation for joining is completed.

  At the time of web joining, first, the feeding of the first aluminum web 11 a is temporarily stopped, and the end portion of the first aluminum web 11 a is cut by the end cutter 27. Next, the suction table 32 is lifted by a moving mechanism (not shown), and the height of the suction surface that sucks the tip of the second aluminum web 11b and the height of the transport path of the preceding first aluminum web 11a. Match. Thereafter, the second aluminum web 11b is guided into the ultrasonic bonding device 29, and the terminal end portion of the first aluminum web 11a and the front end portion of the second aluminum web 11b are ultrasonically bonded. Further, at the same time that the terminal portion of the first aluminum web 11a is cut, the remaining first aluminum web 11a is wound around the winding core (not shown) of the first aluminum coil 23a. Then, the positions of the shafts 19 and 20 are switched, the winding core of the first aluminum coil 23a moved to the standby position is removed from the shaft 19, and a new aluminum coil (not shown) is set. As described above, the unused portion of the first aluminum web 11a remaining on the winding core side of the first aluminum coil 23a is disposed as a loss after being unwound by the operator.

  A plurality of pass rollers 38 that support and convey the aluminum web 11 along a predetermined conveyance direction are provided on the conveyance path of the aluminum web 11. In the present embodiment, a pulse generator 39 is attached to one of these pass rollers 38. The pulse generator 39 converts the rotation of the pass roller 38 into a pulse signal. Thus, the amount of aluminum web 11 delivered is obtained by counting the number of pulses of the pulse signal, and the aluminum web 11 delivery speed is obtained from the frequency.

  The pulse signal converted by the pulse generator 39 is sent to the system controller 40. Although not shown, the system controller 40 includes a CPU, a work ROM, a work RAM, and the like, and performs overall control of the operation of the web transmitter 10 as a whole. The system controller 40 includes various operating units of the joining device 15, a pulse generator 39, a motor driver 42 that controls the operation of the motors 25 a and 25 b, an operation panel 43, and a rotation mechanism of the turret 18, although not shown. It is connected. The system controller 40 controls the delivery of the aluminum web 11 by sending a drive control signal to each part in response to an input signal from the operation panel 43.

The system controller 40 is provided with a delivery speed control memory 45 in order to suppress the amount of the aluminum web 11 remaining on the winding core side of the aluminum coil as much as possible. As described above, the feeding speed of the aluminum web 11 is set to various speeds from a low speed to a high speed according to the type due to the recent diversification of production types. However, when decelerating at the time of web joining, it is usual to decelerate at a substantially constant deceleration rate regardless of whether the speed is high or low in order to keep the tension fluctuation of the aluminum web 11 running on the conveyance line constant. . Therefore, the delivery amount of the aluminum web 11 sent from the start of deceleration until the delivery is stopped differs depending on the delivery speed. In this embodiment, the sending speed is set between 35 and 100 m / min. The deceleration is set to a value at which deceleration starts from 100 m / min and stops sending in 19 seconds, that is, 316 [= 100 ÷ (19 ÷ 60)] m / min ² .

  For example, as shown in FIG. 2, since the deceleration is fixed, when the delivery speed is 100 m / min, the aluminum web 11 is sent out 15.8 m from the start of deceleration until the delivery is stopped. Further, when the delivery speed is 45 m / min, it takes 8.55 sec until the delivery is stopped, and during that time, the 3.21 m aluminum web 11 is delivered. As a result, there is a difference of about 5 times in the delivery amount of the aluminum web 11 depending on the delivery speed. Therefore, the amount of the aluminum web 11 remaining on the winding core side of the aluminum coil can be suppressed by changing the timing for starting deceleration according to the delivery speed. In the present embodiment, the remaining length of the aluminum web 11 remaining in the aluminum coil is used as the deceleration start timing. The remaining length of the aluminum web 11 can be easily obtained from the sending amount information of the aluminum web 11 obtained by counting the number of pulse signals from the pulse generator 39.

  The remaining length of the aluminum web 11 is obtained from the amount of the aluminum web 11 that is obtained by counting the number of pulse signals from the pulse generator 39. At this time, if the aluminum web 11 slips on the pass roller 38. This makes it difficult to obtain an accurate delivery amount. As a result, an accurate remaining length of the aluminum web 11 cannot be obtained, and the remaining length at which the feeding speed starts to be reduced cannot be shortened as much as possible. Therefore, although not shown, it is preferable to suppress the slip of the aluminum web 11 by increasing the wrap angle of the pass roller 38 or forming a groove on the peripheral surface of the pass roller 38. By suppressing the web slip, an accurate remaining length of the aluminum web 11 is obtained. As a result, the remaining length for starting deceleration can be shortened as much as possible, so that the aluminum web 11 can be used up efficiently.

Since the remaining length of the aluminum web is used for the deceleration start timing, the amount of the aluminum web 11 that is sent out after the deceleration is started until the delivery is stopped is determined in advance for each delivery speed. The delivery amount corresponding to each delivery speed can be easily obtained because the deceleration is fixed at 316 m / min ² . In this embodiment, since the sending speed changes between 35 and 100 m / min, the sending speed is divided into six stages of 35, 45, 62, 77, 90, and 100 m / min as shown in FIG.

  Next, the transmission time from when deceleration is started to when transmission is stopped is determined for each transmission speed. Since the deceleration is fixed, the sending time is obtained from the following formula 1 and becomes 6.65, 8.55, 11.78, 14.63, 17.10, and 19.00 sec, respectively. Then, the amount of aluminum web 11 delivered from the start of deceleration to the stop of delivery is obtained for each delivery speed from each of the obtained delivery times and delivery speeds. Since the deceleration of the delivery amount is also fixed, it is obtained from the following mathematical formula 2, and becomes 1.94, 3.21, 6.09, 9.39, 12.83, and 15.80 m, respectively.

[Equation 1]
Transmission time (sec) = Transmission speed (m / min) ÷ 316 (m / min ² ) × 60

[Equation 2]
Sending amount (m) = sending speed (m / min) × sending time (sec) ÷ 60 ÷ 2

  If the relationship between each delivery speed and the delivery amount of the aluminum web 11 until the delivery is stopped is obtained, the deceleration start remaining length, which is the remaining length of the aluminum web 11 for starting the delivery speed deceleration, is obtained based on these relationships. . This remaining deceleration start remaining length is the sum of the calculated amount of delivery until the stoppage of delivery and the remaining remaining length that is reserved as a spare so that the entire aluminum web 11 is not delivered from the winding core. The preliminary remaining length may be an arbitrary value, but is preferably set to a short value as much as possible in order to reduce the remaining amount of the aluminum web 11. When the deceleration start remaining length is set for each transmission speed, a data table in which the transmission speed and the deceleration start remaining length are associated with each other is created as shown in FIG. 4, for example.

  In this data table, when the sending speed is 35 m / min, the sending amount until the stop is 1.94 m. Therefore, when the sending speed is 0 to 35 m / min, the reserve remaining length is set to about 1 m and deceleration starts. The remaining length is set to 3 m. Hereinafter, when the reserve remaining length is set to about 2 m and the sending speed is 35 to 45 m / min, the remaining deceleration start length is 5 m, and when the sending speed is 45 to 62 m / min, the remaining deceleration start length is 8 m. When the speed is 62 to 77 m / min, the remaining deceleration start length is 11 m. When the delivery speed is 77 to 90 m / min, the remaining deceleration start length is 15 m. When the delivery speed is 90 to 100 m / min, the remaining deceleration start length Is set to 18 m. Next, the created data table is stored in the transmission speed control memory 45.

  When the first aluminum web 11a is being sent, the system controller 40, based on the sending speed information of the first aluminum web 11a input in advance or selected on the panel via the operation panel 43, the sending speed control memory 45. The remaining deceleration start length corresponding to the sending speed is selected from the internal data table. At the same time, the system controller 40 determines the remaining length of the first aluminum web 11a remaining in the first aluminum coil 23a from the information on the amount of the first aluminum web 11a that is obtained by counting the number of pulse signals from the pulse generator 39. Is calculated.

When the remaining length calculation result matches the selected deceleration start remaining length, the system controller 40 sends a drive control signal to the motor driver 42 so as to reduce the sending speed. The motor driver 42 controls the rotation speed of the motor 25a so that the conveyance speed is decelerated at a constant deceleration 316 m / min ² . Thereby, at the time of web joining, deceleration can be started with the deceleration start remaining length corresponding to the sending speed of the 1st aluminum web 11a. Even when the feeding of the second aluminum web 11b is started after the web joining, the deceleration start remaining length corresponding to the feeding speed of the second aluminum web 11b is repeated by repeating the same process as that for feeding the first aluminum web 11a. You can start deceleration.

  Next, the operation of this embodiment will be described with reference to the flowchart of FIG. The system controller 40 searches the data table in the sending speed control memory 45 based on the sending speed information of the first aluminum web 11a previously input or selected by the operator via the operation panel 43. The system controller 40 refers to the data table and sets the remaining deceleration start length to 3 m when the input or selected transmission speed information is 0 to 35 m / min. When the delivery speed is 35 to 45 m / min, the deceleration start remaining length is 5 m. When the delivery speed is 45 to 62 m / min, the deceleration start remaining length is 8 m. When the delivery speed is 62 to 77 m / min, the deceleration is reduced. When the remaining start length is 11 m and the delivery speed is 77 to 90 m / min, the remaining deceleration start length is set to 15 m. When the delivery speed is 90 to 100 m / min, the remaining deceleration start length is set to 18 m.

Further, the system controller 40 calculates the remaining length of the first aluminum web 11a remaining in the first aluminum coil 23a from the number of pulse signals from the pulse generator 39. When this remaining length calculation result reaches the set deceleration start remaining length, the system controller 40 sends a drive control signal to the motor driver 42 to decelerate the sending speed. The motor driver 42 controls the rotational speed of the motor 25a so that the delivery speed is decelerated at a constant deceleration 316 m / min ² . As a result, since the deceleration can be started with the optimum deceleration start remaining length corresponding to the feeding speed at the time of the web joining, the first aluminum web 11a is efficient up to the vicinity of the winding core of the first aluminum coil 23a, that is, the end portion. Can be used up well. In addition, what is necessary is just to repeat the above-mentioned process, when sending out the 2nd aluminum web 11b continuously after web joining.

  Thereby, at the time of web joining, since deceleration can be started with the deceleration start remaining length corresponding to the delivery speed set for each product type of the aluminum web 11, the aluminum web 11 can be efficiently delivered to its end portion over all product types. Can be used up. As a result, the production cost can be reduced. In addition, it is possible to reduce the labor of unwinding work by the operator.

  In this embodiment, the sending speed information of the aluminum web 11 is input or selected via the operation panel 43. Instead, the sending speed of the aluminum web 11 is determined from the frequency of the pulse signal sent from the pulse generator 39. The speed may be detected. Further, instead of inputting or selecting the sending speed information from the operation panel 43, the type of the aluminum web 11 may be input or selected from the operation panel 43. In this case, a data table in which the type of the aluminum web 11 is associated with the remaining deceleration start length is stored, and the value of the remaining deceleration start length is obtained from the type of the aluminum web 11.

  In the present embodiment, a data table in which the feeding speed of the aluminum web 11 is associated with the remaining deceleration start length is created in advance, and the remaining deceleration start length corresponding to the feeding speed is selected based on this data table. However, an arithmetic expression may be used instead of the data table. Even in this case, an arithmetic expression for calculating the remaining deceleration start length from the sending speed and the deceleration may be obtained in advance, and the remaining deceleration start length corresponding to the sending speed may be calculated using this computing expression.

  In the present embodiment, the remaining length of the aluminum web 11a is calculated from the amount of the aluminum web 11 obtained from the pulse generator 39, and when the remaining length calculation result reaches the deceleration start remaining length, deceleration of the transmission speed is started. However, the present invention is not limited to this. For example, various recognition marks are provided in advance at the deceleration start remaining length position of the aluminum web 11, and the recognition marks are used by an image recognition device such as a CCD camera. By recognizing, deceleration of the sending speed may be started.

  In the present embodiment, the web sending machine of the PS plate production line that joins and continuously feeds the aluminum web wound in a coil shape has been described, but the present invention is not limited to the aluminum web, but a thin metal plate, paper, The present invention can be applied to a web sending machine of various production lines such as a photosensitive material, a photoengraving material, a magnetic recording material, and a recording paper material that continuously send a web such as a film.

It is the schematic of the web sending machine of the PS plate production line which implemented this invention. It is explanatory drawing showing the relationship between the required time from the start of deceleration of the aluminum web currently sent by the sending machine at a constant speed until it stops sending, and the change of sending speed in the meantime. It is explanatory drawing showing the relationship between the sending speed of the aluminum web currently sent by the sending machine, the required time from the start of deceleration to the stopping of sending, and the sending amount of the aluminum web sent during that time. . It is explanatory drawing which showed the example of registration of the data table currently recorded in the memory for transmission speed control of the transmitter. It is the flowchart which showed the selection process which selects the deceleration start remaining length according to sending speed.

Explanation of symbols

10 Web transmitter 11 Aluminum web
DESCRIPTION OF SYMBOLS 14 Sending device 15 Joining device 23a 1st aluminum coil 23b 2nd aluminum coil 25a, 25b Motor 39 Pulse generator 40 System controller 42 Motor driver 43 Operation panel 45 Memory for speed control

Claims (6)

In a web sending method for sending webs sequentially from a web coil,
Obtain the web deceleration start remaining length that becomes a substantially constant remaining amount when the web is stopped by decelerating at a constant deceleration rate from the web sending speed,
A web sending method comprising: detecting the remaining web length and starting deceleration at the constant deceleration rate when the detected remaining web length becomes the remaining web deceleration start remaining length.   2. The web feed method according to claim 1, wherein the web feed speed is determined in advance according to the type of the web coil, and the web deceleration start remaining length is obtained for each type of the web coil.   The said web deceleration start remaining length consists of a web feed length and preliminary | backup remaining length until a web stops when it decelerates at the said constant deceleration rate from the said web sending speed. Web sending method. In a web feeder that sequentially sends webs from a web coil,
A remaining length detecting means for detecting the remaining length of the web coil;
Obtaining a web deceleration start remaining length that becomes a substantially constant remaining amount when the web is stopped by decelerating at a constant deceleration rate from the web sending speed, and the remaining length detection means detects the web deceleration start remaining length And a deceleration start control means for starting deceleration at the constant deceleration rate when it becomes.   5. The web feed speed is predetermined according to the type of web coil, and the deceleration start control means obtains the web deceleration start remaining length for each type of web coil. Web transmitter.   6. The web according to claim 4, wherein the web deceleration start remaining length includes a web feed length and a reserve remaining length until the web stops when the web is decelerated at a constant deceleration rate from a web delivery speed. Sending machine.

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