JP3993743B2 - Web winding method and apparatus - Google Patents

Description

【００５３】
【発明の効果】
以上のように、本発明によれば、巻き付け当初において低テンションとした後、テンションを所定増加率で増加させ、次いで、高テンションから徐々に減少させながらウエブの巻き取りを行うことにより、ウエブを損傷することがなく、また、端面に巻き乱れがなく、極めて良好な状態のロール材を得ることができる。
【００５４】
また、低テンションでの巻き付け長さを巻芯の長さに対応させて設定し巻き付けを行うことにより、巻芯が撓むことなく、ウエブを一層良好に巻き取ることができる。
【図面の簡単な説明】
【図１】巻芯に対してウエブを巻き付けてロール材を製造する状態の説明図である。
【図２】本発明のウエブの巻き取り方法および装置が適用されるフイルム加工裁断機の概略構成説明図である。
【図３】図２に示すフイルム加工裁断機におけるフイルム巻き取り装置を中心とする制御回路の構成ブロック図である。
【図４】図２に示すフイルム加工裁断機におけるフイルム巻き取り装置の制御回路でのフイルム送り出しの速度指令値と、巻き取りテンション指令値との関係説明図である。
【符号の説明】
１０…フイルム巻き取り装置 １２…フイルム加工裁断機
１４…フイルムロール １８…フイルム送出装置
２０…搬送装置 ２４ａ〜２４ｄ…長尺フイルム
２６…裁断装置 ２８ａ〜２８ｄ…巻芯
３０ａ〜３０ｄ…巻回体 ３２…耳部
３４…耳部処理装置 ３８…サクションドラム
５８…巻芯回転機構 ６０…ブロックラッパ
６４…製品受取機構 ６６…切断機構
１０００…制御回路 １００２…速度制御部
１００４ａ〜１００４ｄ…速度・トルク制御部
１０１６…サーボモータ １０１８…速度指令値メモリ
１０２８ａ〜１０２８ｄ…サーボモータ
１０３０ａ〜１０３０ｄ…速度指令値メモリ
１０３２ａ〜１０３２ｄ…巻き取りテンション指令値メモリ
１０３４ａ〜１０３４ｄ…トルク換算部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a web winding method and apparatus for winding a web around a winding core and winding the web at a high speed.
[0002]
[Prior art]
As a method of winding a web such as a film or paper around a core and producing a good roll material free from wrinkles and turbulence, for example, by performing winding in a state where a contact pressure roller is in close contact with the web, A conventional technique is known that eliminates air entrainment during winding and obtains a good winding state (see Japanese Patent Application Laid-Open No. 11-59985).
[0003]
However, in this prior art, since the contact pressure roller is in direct contact with the web, there is a concern that the quality of the delicate material such as a film is deteriorated.
[0004]
Therefore, as a winding method that avoids deterioration of the web quality and does not generate wrinkles, the winding tension is set to a low tension of 70% or less of the basic winding tension at the initial stage of winding the web. In the conventional technology, the web is wound, and when the number of windings of the web becomes 1/10 of the final number of windings, the winding tension is suddenly returned to high tension, and then the winding is gradually reduced. (See JP-A-60-112562).
[0005]
However, in this prior art, since the web tension is suddenly switched from low tension to high tension, excessive addition is applied to the web, and there is a concern about deterioration of the web. Further, as shown in FIG. 1, since the deformation of the core a around which the web f is wound is not taken into account, depending on the applied tension, the end surface b of the web f may be disturbed. That is, if the core a is curved during the winding of the web f, the web f is swayed in the axial direction of the core a, and the end surface b is disturbed. If there is such a turbulence, the width L of the manufactured roll material will fluctuate. For example, when the roll material is supplied to the subsequent light-shielding packaging step, the light-shielding packaging can obtain a predetermined performance. (For example, optical fogging). Furthermore, problems such as inability to fit well with an image forming apparatus such as an image setter (for example, insertion into a magazine) may occur.
[0006]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problems, and does not damage the web, and does not cause turbulence on the end surface of the roll material obtained by winding the web. It is an object of the present invention to provide a web winding method and apparatus in a very good state.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the web winding method of the present invention is a web winding method in which the web is wound around a core and wound at a high speed .
Set the tension before SL web in low tension, winding long for long the core, winding short for short the core, then, after setting the web tension to high tension, the tension The web is wound while being reduced.
[0011]
In this case, a predetermined rigidity can be imparted to the core without deforming the core by winding the web around the core with a low tension for a predetermined length. In addition, by setting the length of the web to be wound with a low tension in accordance with the length of the core, it is possible to prevent quality defects such as “stepping” in the short core.
[0012]
Next, after increasing the tension at a predetermined increase rate and then winding the web while decreasing at a predetermined decrease rate, sufficient rigidity was imparted without giving excessive addition to the web. The web can be wound around the core. As a result, it is possible to obtain a roll material of good quality that does not cause turbulence in the end face of the obtained roll material, and that is not damaged and does not slip out.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 is an explanatory diagram of a schematic configuration of a film cutting machine 12 according to an embodiment to which the web winding method and apparatus of the present invention is applied.
[0014]
The film processing and cutting machine 12 is provided with a roll-shaped photosensitive material (hereinafter referred to as a film roll 14) based on PET film, TAC film, PEN film, or photographic paper, and gives an appropriate back tension to the film roll 14. The film delivery device 18 for feeding the long film 16 while rotating it, the transport device 20 for sequentially transporting the long film 16 to the next step, and the long film 16 transported by the transport device 20. The long films 24a to 24d (in this embodiment, cut into four long films 24a to 24d) having a predetermined width dimension are formed by cutting in the width direction and dropping the ears. The cutting device 26 and the long films 24a to 24d are wound around the cores 28a to 28d, and then cut into predetermined lengths. The film winding device 10 for obtaining the wound bodies 30a to 30d as products, and the ear processing device 34 for processing unnecessary ear portions (film ear portions) 32 discharged from the long film 16. With.
[0015]
The film delivery device 18 includes a turret shaft 36 that supports the set of film rolls 14 so that the film rolls 14 can be indexed, and the film rolls 14 are delivered under the action of a delivery motor (not shown). The conveying device 20 includes a suction drum 38 as a main feed roller and a plurality of rollers 40. The suction drum 38 is speed controlled so that the peripheral speed becomes a predetermined pattern via a servo motor described later. Is done.
[0016]
A tension detector (tension pickup) 42 is attached to one of the rollers 40 disposed between the film roll 14 and the suction drum 38, and the film tension between them is the tension detector 42 and the film. It is controlled by a feeding motor (not shown) mounted on the rotating shaft of the roll 14. On the turret shaft 36 side, an EPC sensor 44 for detecting the position of the end of the long film 16 and adjusting the position, and the end of the long film 16 and the tip of the new long film 16 are joined. And a suction table 46 for joining.
[0017]
The cutting device 26 includes a plurality of sets of rotary cutters 48a and 48b, and is selectively disposed at a cutting position corresponding to the cutting width, and has a function of cutting the long film 16 into a desired width dimension. Below the cutting device 26, separation rollers 50a and 50b for separating the cut long films 24a to 24d in different directions are arranged, and a nip roller pair 52a is disposed downstream of the separation rollers 50a and 50b. , 52b, the film take-up device 10 is disposed.
[0018]
The film winding device 10 is provided corresponding to each of the long films 24a to 24d by two sets of left and right in FIG. 2, and a winding core rotating mechanism 58 capable of rotating while holding the winding cores 28a to 28d. A plurality of block wrappers 60 for obtaining wound bodies 30a to 30d by winding the long films 24a to 24d to a predetermined length around the winding cores 28a to 28d, and the long film wound around the winding cores 28a to 28d. The peripheral surfaces of 24a to 24d are gripped in a tensioned state, and the product receiving mechanism 64 is relatively separable from the block wrapper 60, and the long films 24a to 24d are tensioned by the product receiving mechanism 64. Is provided with a cutting mechanism 66 that cuts the long films 24a to 24d in the width direction.
[0019]
The general operation of the film cutting machine 12 configured as described above will be described below.
[0020]
The film roll 14 mounted on the film delivery device 18 is rewound under the rotational action of a feed motor (not shown), and the long film 16 is guided to a suction drum 38 constituting the transport device 20. The suction drum 38 is speed-controlled with a predetermined speed pattern under the action of a servo motor to be described later, and the transport length (winding length) of the long film 16 is detected via an encoder (not shown).
[0021]
The long film 16 whose speed is adjusted by the suction drum 38 is sent to the cutting device 26, and the ears 32 at both ends are cut under the action of the rotary cutters 48a and 48b, and four pieces having a predetermined width dimension are used. The long films 24a to 24d are conveyed to the film winding device 10.
[0022]
In the film winding device 10, the suction drum 38 rotates while the outer peripheral surfaces of the cores 28 a to 28 d are held by the block wrapper 60, and the cores 28 a to 28 d are operated under the action of the core rotation mechanism 58. It is rotated. For this reason, the long films 24a to 24d are wound around the outer peripheral surfaces of the cores 28a to 28d, and after the block wrapper 60 is separated from the cores 28a to 28d, the long films 24a are placed on the cores 28a to 28d. -24d is wound up to a predetermined length to obtain wound bodies 30a-30d.
[0023]
Next, the product receiving mechanism 64 is raised to hold the wound bodies 30a to 30d, and the wound bodies 30a to 30d are lowered while unwinding the long films 24a to 24d. Then, the cutting mechanism 66 is driven, and the long films 24a to 24d are cut (cross cut) in the width direction. Thereby, the product which consists of winding bodies 30a-30d is obtained, and each product is supplied to the process of the next step. On the other hand, new winding cores 28a to 28d are automatically supplied to the block wrapper 60, and the next winding and winding operations are started again.
[0024]
By the way, when the long films 24a to 24d are wound and wound as described above, excessive tension is applied unless the tension applied to the long films 24a to 24d is appropriately adjusted. This causes problems such as damage to the long films 24a to 24d or loosening or turbulence in the obtained wound bodies 30a to 30d. In the present embodiment, these problems can be avoided by configuring and controlling the film winding device 10 as follows.
[0025]
FIG. 3 shows a configuration block of the control circuit 1000 in the film winding device 10. The control circuit 1000 includes a speed control unit 1002 that controls the rotational speed of the suction drum 38, and a speed / torque control unit 1004a to 1004d that controls the rotational speed and rotational torque of each of the cores 28a to 28d in the core rotation mechanism 58. Core rotation control means).
[0026]
A process control computer 1008 is connected to the control circuit 1000 via an input unit 1006. A management computer 1010 is connected to the process control computer 1008. The process control computer 1008 performs process control of the film winding apparatus 10. The film processing cutter 12 is provided with a process control computer for each process. A management computer 1010 performs overall management of each process control computer connected to the film cutting machine 12.
[0027]
A motor driver 1014 is connected to the speed control unit 1002 via the output unit 1012. The motor driver 1014 is connected to a servo motor 1016 that rotationally drives the suction drum 38. In this case, a speed command value memory 1018 for storing a speed command value supplied from the process control computer 1008 is connected to the speed control unit 1002, and the servo motor 1016 is driven and controlled in accordance with the speed command value.
[0028]
Motor drivers 1026a to 1026d are connected to the speed / torque control units 1004a to 1004d via output units 1024a to 1024d. Servo motors 1028a to 1028d for winding the long films 24a to 24d are connected to the motor drivers 1026a to 1026d via the winding cores 28a to 28d. In this case, speed command value memories 1030a to 1030d for storing a speed command value supplied from the process control computer 1008 are connected to the speed / torque control units 1004a to 1004d, and windings supplied from the process control computer 1008 are connected. Winding tension command value memories 1032a to 1032d (winding tension storage means) for storing winding tension command values are connected via torque conversion units 1034a to 1034d (torque conversion means). Servo motors 1028a to 1028d are driven and controlled in accordance with speed command values supplied from speed / torque control units 1004a to 1004d and winding torque command values converted by torque conversion units 1034a to 1034d.
[0029]
Next, the control operation of the film winding apparatus 10 by the control circuit 1000 configured as described above will be described.
[0030]
Prior to the winding operation of the long films 24a to 24d in the film winding apparatus 10, the process control computer 1008 performs the speed command value memory 1018, the speed command value memories 1030a to 1030d, and the winding tension command value memories 1032a to 1032d. The preset speed command value and winding tension command value are stored.
[0031]
4 indicates the relationship between the speed command value for the servo motor 1016 stored in the speed command value memory 1018 and time. The relationship at the bottom of FIG. 4 indicates the relationship between the winding tension command value and the time for the long films 24a to 24d stored in the winding tension command value memories 1032a to 1032d. The speed command value memories 1030a to 1030d store constant speed command values for the servo motors 1028a to 1028d.
[0032]
First, the speed / torque control units 1004a to 1004d read constant speed command values from the speed command value memories 1030a to 1030d, and drive signals based on the speed command values from the output units 1024a to 1024d via the motor drivers 1026a to 1026d. Is supplied to the servo motors 1028a to 1028d, and the winding cores 28a to 28d are rotated. Further, the torque conversion units 1034a to 1034d read the constant winding tension command value T1 shown in FIG. 4 from the winding tension command value memories 1032a to 1032d, convert the winding tension command value T1 into a torque command value, The speed / torque control units 1004a to 1004d are supplied. The speed / torque control units 1004a to 1004d control the motor drivers 1026a to 1026d so that the servo motors 1028a to 1028d rotate with the torque command values supplied from the torque conversion units 1034a to 1034d.
[0033]
After the core rotation mechanism 58 is adjusted to the above state, at time t1, the speed control unit 1002 reads the speed command value from the speed command value memory 1018 and sends a drive signal based on the speed command value from the output unit 1012 to the motor. This is supplied to the servo motor 1016 via the driver 1014, and the suction drum 38 is rotated. In this case, the suction drum 38 is accelerated from time t1 to time t2 and then rotated at a constant speed v1 to send out the long film 16 to the film winding device 10.
[0034]
The long film 16 sent out by the suction drum 38 is cut into four long films 24 a to 24 d by being cut by the cutting device 26, and is then transferred to the winding core rotating mechanism 58 constituting the film winding device 10. Supplied. Next, winding of the long films 24a to 24d around the cores 28a to 28d rotated by the servo motors 1028a to 1028d is started. In this case, since the servo motors 1028a to 1028d are driven and controlled so as to obtain a torque value equal to the constant torque command value obtained by converting the constant winding tension command value T1, the winding cores 28a to 28d are controlled. When the long films 24a to 24d are wound around the long films 24a to 24d, a constant winding tension T1 is applied to the long films 24a to 24d.
[0035]
Next, the speed control unit 1002 reads the speed command value from the speed command value memory 1018, rotates the suction drum 38 from the speed v1 to the speed v2 from time t3 to time t6, and rotates the long film 16 to the film. It is sent out to the winding device 10.
[0036]
On the other hand, the speed / torque control units 1004a to 1004d take up the take-up tension command read from the take-up tension command value memories 1032a to 1032d during the period from time t4 to time t5 set according to the length of the cores 28a to 28d. The winding tension command value that gradually increases from the value T1 to the winding tension command value T3 set according to the length of the winding cores 28a to 28d is converted into a torque command value by the torque conversion units 1034a to 1034d, and this command The value is supplied to the motor drivers 1026a to 1026d to control the servo motors 1028a to 1028d. As a result, the long films 24a to 24d are wound around the cores 28a to 28d by gradually increasing winding tensions T1 to T3.
[0037]
When the time t5 is reached, the speed / torque control units 1004a to 1004d wind the long films 24a to 24d while gradually decreasing the torque command value from the value corresponding to the winding tension command value T3.
[0038]
During this time, the acceleration of the delivery of the long film 16 by the servo motor 1016 based on the command from the speed control unit 1002 gradually decreases, and at time t6, the speed command value from the speed control unit 1002 becomes a constant speed command value v2. Is set. The speed command value v2 is held until time t7 and then decelerated again. At time t8, the speed command value v1 becomes speed command value v1 and becomes 0 at time t9.
[0039]
On the other hand, the speed / torque control units 1004a to 1004d gradually decrease the torque command value from the value corresponding to the winding tension command value T3 to the value corresponding to the winding tension command value T2 from time t5 to time t9. After that, a torque command value corresponding to the winding tension command value T1 is set.
[0040]
By performing the winding operation on the winding cores 28a to 28d while adjusting the tension applied to the long films 24a to 24d as described above, favorable winding bodies 30a to 30d can be obtained.
[0041]
That is, in the state of starting to wind the long films 24a to 24d around the winding cores 28a to 28d, the winding tension command value T1 applied to the long films 24a to 24d is kept low. In this case, since a large external force is not applied to the cores 28a to 28d that have not been provided with sufficient rigidity by the long films 24a to 24d, the cores 28a to 28d do not bend. The scale films 24a to 24d are wound around the cores 28a to 28d in a good state.
[0042]
Next, when the long films 24a to 24d having a predetermined length are wound around the cores 28a to 28d, rigidity is imparted to the cores 28a to 28d so that bending is difficult. Therefore, by switching the tension of the long films 24a to 24d to a high winding tension command value T3, the long films 24a to 24d can be wound at high speed without becoming unstable due to loose winding. In this case, with respect to the long cores 28a to 28d, by setting the length of the long films 24a to 24d to be wound with the low winding tension command value T1, the cores 28a to 28d are not bent. The long films 24a to 24d can be wound. Further, since the short winding cores 28a to 28d have sufficient rigidity in advance, the lengths of the long films 24a to 24d to be wound with the low winding tension command value T1 are set short, and after the switching, By setting the high winding tension command value T3 to be high, a winding deviation does not occur during winding, and a good winding state can be obtained.
[0043]
Further, in the present embodiment, when the winding tension command value is increased from T1 to T3, it is gradually increased at a predetermined increase rate without giving a sudden tension fluctuation. 24d is wound around the cores 28a to 28d without being damaged.
[0044]
Next, after the tension of the long films 24a to 24d reaches the take-up tension command value T3, the winding operation is performed while gradually reducing the tension, thereby causing the winding deviation and the winding bodies 30a to 30d. Winding turbulence does not occur on the end face, and winding bodies 30a to 30d in a very good winding state can be obtained.
[0045]
Of course, the winding tension command values stored in the winding tension command value memories 1032a to 1032d can be set individually for each winding body 30a to 30d and controlled independently.
[0046]
Next, an example under specific winding conditions will be described.
[0047]
First embodiment When winding long films 24a to 24d having a width of 1220 mm by winding cores 28a to 28d having a length of 1220 mm and an outer diameter of 3 inches, a tension T1 = 7.84 N / 100 mm and 8 m (about (30 laps) After winding up, the tension was gradually increased from T1 to T3 = 17.64 N / mm, and then wound up to 10 m. Next, the long films 24a to 24d were wound up to 61 m while gradually reducing the tension T3 at a rate of 20% to obtain wound bodies 30a to 30d. Note that the winding circumference at the low tension T1 is about 15% of the total winding circumference.
[0048]
In the first embodiment, despite the long and flexible cores 28a to 28d, the turbulence of the end faces of the wound bodies 30a to 30d is within a target value of 0.5 mm, There was no winding slip and a sufficiently good winding state was obtained.
[0049]
Second embodiment When winding the long films 24a to 24d having a width of 150 mm by the winding cores 28a to 28d having a length of 150 mm and an outer diameter of 3 inches, the winding core 28a with a tension T1 = 7.84 N / 100 mm. After winding about ½ of ~ 28d, winding was performed while increasing the tension from T1 to T3 = 24.5 N / mm. Next, the long films 24a to 24d were wound up to 61 m while gradually reducing the tension T3 at a rate of 20% to obtain wound bodies 30a to 30d. Note that the winding circumference at the low tension T1 is about 0.5% of the total winding circumference.
[0050]
In the second embodiment, since the winding cores 28a to 28d are short and difficult to bend, the long films 24a to 24d can be wound up with high tension from the initial stage of winding. No good wound bodies 30a to 30d were obtained.
[0051]
Other examples are shown in Table 1 below. In these embodiments, the inner diameters of the cores 28a to 28d are 73.7 mm, the outer diameter is 77.9 mm, and the length is 0.5 to 1.0 mm longer than the width of the long films 24a to 24d. The short one was used. By setting the length of the long films 24a to 24d wound around the winding cores 28a to 28d with the low tension T1 as shown in Table 1 with respect to the total length of the wound bodies 30a to 30d, the wound body 30a It was possible to suppress the turbulence of the end face of ˜30d to an allowable range of 0.5 mm.
[0052]
[Table 1]

[0053]
【The invention's effect】
As described above, according to the present invention, after setting the tension low at the beginning of winding, the tension is increased at a predetermined increase rate, and then the web is wound while gradually decreasing from the high tension. It is possible to obtain a roll material in a very good state without being damaged and without being disturbed on the end face.
[0054]
In addition, by setting the winding length with a low tension corresponding to the length of the core and performing winding, the web can be wound even better without the core being bent.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a state in which a roll material is manufactured by winding a web around a winding core.
FIG. 2 is an explanatory diagram of a schematic configuration of a film cutting machine to which the web winding method and apparatus of the present invention are applied.
FIG. 3 is a block diagram showing the configuration of a control circuit centering on a film winding device in the film cutting machine shown in FIG. 2;
4 is a diagram for explaining the relationship between a film feed speed command value and a take-up tension command value in a control circuit of a film take-up device in the film processing cutter shown in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Film winding apparatus 12 ... Film processing cutting machine 14 ... Film roll 18 ... Film delivery apparatus 20 ... Conveyance apparatus 24a-24d ... Long film 26 ... Cutting apparatus 28a-28d ... Core 30a-30d ... Winding body 32 ... Ear part 34 ... Ear part processing device 38 ... Suction drum 58 ... Core rotation mechanism 60 ... Block wrapper 64 ... Product receiving mechanism 66 ... Cutting mechanism 1000 ... Control circuit 1002 ... Speed control part 1004a to 1044d ... Speed / torque control part DESCRIPTION OF SYMBOLS 1016 ... Servo motor 1018 ... Speed command value memory 1028a-1028d ... Servo motor 1030a-1030d ... Speed command value memory 1032a-1032d ... Winding tension command value memory 1034a-1034d ... Torque conversion part

Claims (3)

In the winding method of the web that winds the web around the core and winds at high speed ,
Set the tension before SL web in low tension, winding long for long the core, winding short for short the core, then, after setting the web tension to high tension, the tension A method of winding a web, wherein the web is wound while being reduced. The method of claim 1, wherein
The web winding method according to claim 1, wherein the high tension value is set in accordance with a length of the core. The method of claim 2, wherein
The web winding method according to claim 1, wherein the value of the high tension is set low for the long core and high for the short core.

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