JP2008063078A - Web replacement preparation device and web replacement preparation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a web replacement preparation device, capable of performing replacement of web without reduction in operating speed of a sheet processing device such as a corrugator. <P>SOLUTION: The device comprises two sets of first and second mill roll stands 10a and 10b supported to be symmetrically movable along rotating shafts 16, respectively, and two sets of paired first and second arms 17a and 17b for holding and rotatably supporting waiting webs stopped on carrying surfaces of web carrying-in devices 11a and 11b from both axial ends thereof by movement in the mutually narrowing direction, the two sets being provided with a phase being circumferentially shifted 180°, so that a web used, a web used next and a web used after the next can be supported by four sets of paired arms 17a and 17b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a winding paper replacement preparation apparatus and a winding paper replacement preparation method for replacing an old winding paper and a new winding paper by splicing the leading end of a new winding paper to be used next to a traveling base paper fed from the winding paper to a sheet processing unit. It is about.

  Corrugated medium ridges are formed into a corrugated shape, and a single-sided cardboard is formed by laminating a liner on one side of the central shin, and a double-sided cardboard is formed by laminating a liner on the single-sided cardboard. In a corrugator that forms a double-sided corrugated cardboard by laminating corrugated cardboard, set the new roll paper to be used next on the mill roll stand and prepare for replacing the roll paper. When the diameter is reduced and the winding diameter reaches a predetermined winding diameter, or when a cardboard of a predetermined length is manufactured and the lot needs to be changed, the old base paper is rewound from the new winding paper. The new base paper is spliced, and the new base paper is run to exchange the web.

  As a roll paper replacement preparation device in the mill roll stand, those described in FIGS. 5 to 10 of Patent Document 1 are conventionally known. In this webbing paper replacement preparation device, the other mill in the traveling state of the base paper that has two mill roll stands and the base paper is fed out from the web that is rotatably supported by a pair of arms of the one mill roll stand. Set the next web to be used between the pair of arms of the roll stand and prepare for replacement. When a replacement command is issued, the leading edge of the new web is spliced to the running base paper and the new base paper is run. I am doing so.

Japanese Patent No. 2992111

  By the way, in the roll paper replacement preparation device described in Patent Document 1, only one roll paper can be supported by one mill roll stand, and therefore only the roll paper to be used next time can be prepared. For this reason, after the prepared web is spliced to the running base paper, the remaining web remaining between the pair of arms is discharged, and the web to be used next by the pair of arms is sandwiched from both ends in the axial direction. Due to the pivoting movement of the arm, it is necessary to lift up the web and make the next preparation. The preparation takes a very long time, and the web to be used next time cannot be quickly spliced in a short cycle time. For this reason, in the production of a small lot of corrugated cardboard, when replacing the web, it is necessary to extremely slow down the corrugator production speed, sometimes to stop it, and there is a problem that the corrugated cardboard productivity is significantly reduced.

  SUMMARY OF THE INVENTION An object of the present invention is to always prepare two winding papers, a winding paper to be used next time and a winding paper to be used one after another, without reducing the operating speed of a sheet processing apparatus such as a corrugator. The present invention is to provide a roll paper replacement preparation device and a roll paper replacement preparation method that can be exchanged.

  In order to solve the above-described problems, in the roll paper replacement preparation device according to the present invention, two sets of mill roll stands that rotatably support the roll paper, and arranged at the lower side portions of the two sets of mill roll stands. And two rolls of paper roll-in devices that carry new rolls to the side of each mill roll stand, and the rolls after use that are disposed below the two sets of mill roll stands and discharged from each mill roll stand. Each of the two sets of mill roll stands has a rotating shaft and is supported symmetrically and freely movable along the rotating shaft. , A pair of rotatively supported webs sandwiched from both ends in the axial direction and stopped on the conveying surface of the web loading device by symmetrical movement in the direction of narrowing each other Than it is adopted the configuration in which 180 ° out phase two sets of over beam in the circumferential direction.

Further, in the web replacement replacement preparation method according to the present invention, the web replacement replacement preparation apparatus having the above-described configuration includes the following first to eleventh steps, and the web is always used next time in the running state of the base paper, A configuration was adopted in which two webs that were used one after another were held in a state ready for replacement.
First step: The first web on one web transport device supported by one pair of arms in one mill roll stand is moved upward and placed at a preparatory position on the side of the rotating shaft, and the other The second roll paper to be used next time on the other roll paper carry-in device supported by one pair of arms in the mill roll stand of the other mill roll stand is moved upward and arranged at a preparation position on the side of the rotation shaft of the other mill roll stand. The
Second step: In a state where the rotating shaft of one of the mill roll stands is rotated, the first web in the ready state is moved further upward, and the first base paper unwound from the first web travels through the paper passing path. Then, the third web used one after another is carried to the standby position on the side of one mill roll stand by the one web feeding device.
Third step: The distance between the other pair of arms after being moved upward until the tip of the other pair of arms of the one mill roll stand is aligned with the axis of the third web in the standby state. The third web is clamped and the third web on one web transport device is moved to the upper preparation position and the first web is moved to the first mill roll stand and the second mill roll. The paper is moved to a paper splicing position above a common web discharge device disposed below the stand.
Fourth step: The second base paper of the second web used next time is spliced to the first base paper, and the second base paper used next time is caused to run by cutting the first base paper.
Fifth step: In the running state of the second base paper that has been spliced, the first web remaining between the pair of arms is moved downward until it is supported by the common web discharge device, and then facing the pair of arms. The gap is widened to release the gripping of the first web, and the pair of arms are further moved downward, and then the first web is discharged by the web discharge device.
6th process: The 4th web used one after another is carried in to the stand-by position on the side of the other mill roll stand by the other web feeding device.
Seventh step: The facing distance between the other pair of arms after being moved upward until the tip of the other pair of arms of the other mill roll stand is aligned with the axis of the fourth web in the standby state Hold the 4th roll with narrowing.
Eighth step: After the fourth web is sandwiched, the fourth web on the other web transport device is moved to the upper preparation position, and the second web is moved to the splicing position.
Ninth step: The third base paper of the third winding paper that is used one after another is spliced to the second base paper, and the third base paper that is used one after another is run by cutting the second base paper.
Tenth step: In the running state of the third base paper that has been spliced, the second web remaining between the pair of arms is moved downward until it is supported by the common web discharge device, and then facing the pair of arms. The gap is widened to release the holding of the second web, and the pair of arms are moved further downward, and then the second web is discharged by the web discharge device.
Eleventh step: The fifth web used one after another is carried into the standby position on the side of one mill roll stand by the one web feeding device.

  As described above, by providing two sets of a pair of arms for sandwiching the web from both ends in the axial direction on the respective rotation shafts of the two sets of mill roll stands, a pair of arms are provided with a 180 ° phase shift in the circumferential direction. In the running state of the base paper that has been rewound from the web that is rotatably supported by the pair of arms, the two webs of the next use and the web that is used one after the other are used by the two pairs of the remaining three arms. Support and be ready for replacement.

  For this reason, even if the base paper that has been rewound from the next use web is spliced to the running base paper, the next use web is in a ready state, so that the web can be used without reducing the operation speed of the sheet processing apparatus such as a corrugator. Exchange can be performed, and a small lot can be produced efficiently.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a single-sided cardboard manufacturing section of a corrugator apparatus for manufacturing cardboard. The production section includes a liner base paper supply section 1 disposed in the upstream portion of the apparatus and a medium base paper supply section 2 disposed on the downstream side of the supply section. The intermediate paper b supplied from the supply unit 2 is fed into a single facer 3 arranged between the supply unit 1 and the supply unit 2 and step-formed, and the step top is glued.

  On the other hand, the liner base paper a supplied from the liner base paper supply unit 1 is also fed into the single facer 3 and bonded to the intermediately formed base paper b. The single-sided cardboard S is formed by the adhesion, and the single-sided cardboard S is carried onto the carry-in end portion of the sheet conveying conveyor 5 by the vertical conveyor 4.

  A first mill roll stand 10a and a second mill roll stand 10b that rotatably support the winding paper are provided in the upstream and downstream directions of the apparatus in each of the liner base paper a supply unit 1 and the intermediate base paper b supply unit 2, respectively. They are provided to face each other at a required interval.

Further, in each of the supply units 1 and 2, a new first web (a web to be used first) is placed in the lower part on the upstream side that is the side of the first mill roll stand 10a. The first web roll-in device 11a that transports to the side position 10a and the second roll paper that is placed next to the lower part on the downstream side that is the side of the second mill roll stand 10b and is used next time is the second mill roll stand. The second web-feeding device 11b for transporting to the side position 10b and the used web-paper discharged from the first and second mill roll stands 10a and 10b are received and directed in one direction toward the outside of the device. A common web discharge device 12 disposed below an intermediate portion between the first mill roll stand 10a and the second mill roll stand 10b, and the first and second mill rolls. Le stand 10a, a splicer 13 for splicing the liner base paper a and between the corrugating medium b with each other over between 10b.
In addition, the side position of the 1st mill roll stand 10a and the side position of the 2nd mill roll stand 10b are each positions which oppose the apparatus upstream and downstream across these mill roll stands 10a and 10b. .

  Each splicer 13 has a leading end of a web that is rotatably supported by each of the first and second mill roll stands 10a and 10b, similarly to the splicer shown in FIGS. A pair of holding members 14 are held, and the pair of holding members 14 are relatively movable in the upstream and downstream directions of the apparatus.

  2 and 3 show the first mill roll stand 10a. In addition, since the 2nd mill roll stand 10b is the same as the 1st mill roll stand 10a, the same code | symbol is attached | subjected to the same part and description is abbreviate | omitted. As shown in the figure, the first mill roll stand 10a has a pair of opposed stands 15 in the width direction of the apparatus (both outward directions), and the rotary shaft 16 extending in the width direction of the apparatus by the stand 15 is provided. Round shaft portions 16a provided at both ends are rotatably supported.

  The other part of the rotating shaft 16 except for the round shaft portions 16a at both ends is a guide shaft portion 16b having an oval cross section, and the pair of first arms 17a and the pair of second arms 17b are formed by the guide shaft portions 16b. Each of the rear end portions is supported along the rotation shaft 16 so as to be movable in the width direction of the apparatus.

  The pair of first arms 17a and the pair of second arms 17b are provided at an interval of 180 ° in the circumferential direction so as to be linear. The opposing spacing in the width direction of the pair of first and second arms 17a, 17b of each set is adjusted by the spacing adjusting means 18, and these first and second arms 17a in the direction of narrowing the facing spacing. , 17b, the chuck 19 provided at the tip of the webbing sandwiches the web from both ends in the axial direction, and rotatably supports the web.

  The distance adjusting means 18 for adjusting the facing distance between the pair of first arms 17a has a length on a screw shaft 21 whose both ends are rotatably supported by discs 20 provided on both ends of the rotating shaft 16. The right screw 22 and the left screw 23 are formed symmetrically with respect to the central portion of the direction, and the right screw 22 is screwed to one of the pair of first arms 17a, and the left screw 23 is turned to the other. The screw shaft 21 is rotated by driving the motor 24 that is engaged with the screw and connected to the end of the screw shaft 21 so that each of the pair of first arms 17a is symmetrical with respect to the central portion of the screw shaft 21. The distance between the pair of first arms 17a is adjusted by moving in the width direction of the apparatus.

  In addition, since the space | interval adjustment means 18 which adjusts the opposing space | interval between a pair of 2nd arms 17b is also the same structure as the above, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  The single-sided corrugated board manufacturing unit of the corrugator apparatus shown in the embodiment has the above-described structure, and when the single-sided cardboard is manufactured, the first mill roll stand 10a and the second mill roll provided in the liner base paper supply unit 1 The web A of the liner base paper a is prepared for each of the stands 10b, and the medium base paper b is placed on each of the first mill roll stand 10a and the second mill roll stand 10b provided in the intermediate base paper supply unit 2. Prepare web B.

  Here, since the preparation of the winding paper B of the intermediate base paper b is the same as the preparation of the winding paper A of the liner base paper a, the preparation of the winding paper A of the liner base paper a will be described below with reference to FIGS. explain.

First, as shown in FIG. 4, the first web A ₁ to be used first by driving the first web carry-in device 11a is moved from the outer position in the device width direction of the first mill roll stand 10a to a pair of first arms. upstream side position while carrying to the standby position is between 17a, outer position in the device width direction of the second web a ₂ used in the next by the drive of the second paper roll loading unit 11b second mill roll stand 10b To a standby position which is a downstream side position between the pair of first arms 17a.
Thus, the first web A ₁ and the second web A _2, are carried into a position such as to face in the vertical flow direction in between the first mill roll stand 10a and a second mill roll stand 10b .

At this time, the first arm 17a of the first mill roll stand 10a is held in a state of extending to the upstream side toward the lower side of the rotary shaft 16, and the first arm 17a of the second mill roll stand 10b. also loading of the rotary shaft 16 first web a ₁ and held in a state that extends to the downstream side downward and second webs a ₂ is kept so as not inhibited.

When each of the webs A ₁ and A ₂ is carried to a standby position that is a lateral position between the pair of first arms 17a of the first and second mill roll stands 10a and 10b and stops, the first mill roll stand the rotary shaft 16 of 10a by clockwise as indicated by an arrow in FIG. 4, a pair of first arm 17a of the chucks 19 of the distal portion upstream upwardly of the first web a ₁ is moved toward to match the axis, it narrows these opposing gap to close the pair of first arm 17a in this state, rotatably sandwiching the first web a ₁ from both ends of the axial direction in the above chuck 19 To support.

As shown in FIG. 5, when clamping the first web A ₁ by a pair of first arm 17a extending toward the upstream side, a rotary shaft 16 is further rotated clockwise in the same direction as indicated by arrows in FIG. causes pivotal movement of the first web a ₁ upward.

As shown in FIG. 6, when the first web A ₁ is turning moves upward to the ready position located laterally of the upstream side of the rotary shaft 16, winding from the first web A ₁ of the first liner sheet a upward The sheet is returned and pulled out, and the paper is passed from the splicer 13 through the paper path between the single facers 3 shown in FIG.
The first said ready position of the web A ₁ is spaced upwardly from the first paper roll loading device 11a, may be a position upstream of the first mill roll stand 10a.

On the other hand, by rotating the rotating shaft 16 of the second mill roll stand 10b counterclockwise as shown by the arrow in FIG. 5, the chucks 19 at the tip portions of the pair of first arms 17a are directed upward on the downstream side. so moved to match the second web a ₂ axis of next use, by narrowing these opposing gap to close the pair of first arm 17a in this state, the second web above the chucks 19 a ₂ Is supported from both ends in the axial direction so as to be rotatable.

As shown in FIG. 6, when the second web A ₂ to be used next time is sandwiched between the pair of first arms 17a extending toward the downstream side, the rotary shaft 16 is further moved in the same direction as indicated by the arrow in FIG. As shown in FIG. 7, the second web A ₂ is rotated counterclockwise and pivoted upward to a preparation position located on the downstream side of the rotation shaft 16. Note that the movement in the second ready position of the web A ₂ is moved to the first ready position of the web A ₁ may be performed substantially simultaneously. After pivoting movement of the second web A _2, pulled out from the second paper roll A ₂ of next use rewinds the second liner sheet a, the splicing retains its tip in the holding member 14 is stopped above Prepare.
The preparation position of the second web A ₂ may be a position away from the second web transport device 11b.

With the second web A ₂ used next is pivoted moved to the ready position, extends upward toward the first upstream side has become the arm 17a and the linear second mill roll stand 10b When the second arm 17b moves downward about the rotating shaft 16, it contacts the tip of the second arm 17b extending downward toward the downstream side of the first mill roll stand 10a. In order to avoid this, the rotating shaft 16 of the first mill roll stand 10a is further rotated to the right to be further extended below the rotating shaft 16, as shown in FIG. Further, when the rotary shaft 16 rotates, the third web A ₃ that is used one after another by the first web transport device 11a associated with the first mill roll stand 10a is transferred to the pair of second rolls of the first mill roll stand 10a. Carry in to the upstream side standby position between the arms 17b.

As shown in FIG. 7, the third web A ₃ of after next use is stopped is conveyed to the standby position, the rotary shaft 16 of the first mill roll stand 10a by clockwise as indicated by an arrow in the figure, is moved toward the chuck 19 of the tip portions of the pair of second arm 17b to the upstream side upper position until matching the third axis of the web a _3, to close the pair of second arm 17b in this state narrowing these opposing interval, for rotatably supporting and clamping the third web a ₃ in after next used above the chucks 19 from both ends in the axial direction.

As shown in FIG. 8, when sandwiching the third web A ₃ by a pair of second arms 17b, the rotary shaft 16 is further rotated clockwise in the same direction as indicated by the arrows in the figure, as shown in FIG. 9 , the pivoting movement of the third web a ₃ to the ready position which is located on the side of the upstream side of the rotary shaft 16 upward.
The preparation position of the third web A ₃ may be a position away from the first web transport device 11a.

After next when the third web A ₃ use is pivoted moved to the ready position, the extend upwardly toward the second downstream has become arm 17b and the straight first mill roll stand 10a 1 to avoid the first web a ₁ of the supported in use by arms 17a of coming into contact with the tip of the second arm 17b that extends downward toward the upstream side of the second mill roll stand 10b, The rotation shaft 16 of the second mill roll stand 10b is rotated counterclockwise so that the second arm 17b extends further below the rotation shaft 16 as shown in FIG.

As shown in FIG. 9, the third web A ₃ of after next used to come to a ready position of the side portion of the upstream side of the rotary shaft 16 away upwardly from the paper roll loading unit 11a, the second mill roll stand 10b When the second arm 17b is in a state extending downward toward the downstream side of the rotary shaft 16, the distal end of the third liner base paper a drawn unwound from the third paper roll a ₃ of the after next use upward Is held by the holding member 14 on the left side (upstream side) of the splicer 13 to prepare for paper splicing. At this time, the first web A _{1 in use} is swung to the paper splicing position above the web discharge device 12. Moved. Further, the fourth web A ₄ is moved between the pair of second arms 17 b from the outer position in the device width direction of the second mill roll stand 10 b by the second roll paper carry-in device 11 b related to the second mill roll stand 10 b. Carry in toward the standby position which is the downstream side position.

In the preparation state of the second web A _{2 for the} next use and the third web A ₃ for the next use, when a lot change occurs and a command for replacing the web is issued, the second liner base paper for the second web A ₂ used next time. The right side (downstream side) holding member 14 holding the front end of a is moved upstream toward the first liner base paper a of the first web A ₁ running on the splicer 13, and FIG. as shown, to abut the leading end of the new liner base paper a travel to that first web a first ₁ liner sheet second web of a next use a _2, was previously applied to the abutment surface adhesion Paper splices through agents. After the paper splicing, the first liner base paper a of the first web A ₁ is cut in the width direction and the second liner base paper a of the second web A ₂ is run.

After the splicing, as shown by the arrow in FIG. 9, the rotation shaft 16 of the first mill roll stand 10 a is rotated to the right, and the tip of the pair of first arms 17 a is formed on the downstream side of the rotation shaft 16. The used first web A ₁ that remains between the chucks 19 is conveyed on the conveyance surface of the common web discharge device 12 provided below the intermediate portion between the first mill roll stand 10a and the second mill roll stand 10b. Rotate to a supported position.

As shown in FIG. 10, when the first web A ₁ after use is pivotal movement downwardly is supported by the conveying surface of the web the discharge device 12, the spread of the opposing distance between the pair of first arm 17a 1 releasing the holding of the web a _1, after its release, the rotary shaft 16 of the first mill roll stand 10a rotates clockwise.

As shown in FIG. 11, when the pair of first arms 17 a of the first mill roll stand 10 a is stopped in a state where it extends downstream toward the lower side of the rotating shaft 16, it is used by driving the web discharge device 12. is conveyed to discharge toward the first web a ₁ after the outer side of the device width direction. Further, the fifth web A ₅ is moved between the pair of first arms 17a from the outer position in the apparatus width direction of the first mill roll stand 10a by the first web transport apparatus 11a related to the first mill roll stand 10a. Carry in toward the standby position, which is the upstream side position.

Further, by rotating the rotation shaft 16 of the second mill roll stand 10b counterclockwise as indicated by the arrow in FIG. 11 and moving the pair of second arms 17b upward on the downstream side, the tip end portion thereof the chuck 19 is coincident with the axis of the fourth web a _4, by narrowing the opposing interval between the pair of second arm 17b in this state, the fourth web a ₄ in the pair of chucks 19 in the axial direction It is sandwiched from both ends and is supported rotatably.

As shown in FIG. 12, after clamping the fourth web A ₄ by a pair of second arms 17b, the rotary shaft 16 Left rotation further the same direction as indicated by the arrows in the drawing, FIG. 13 as shown, the fourth web a ₄ from the second paper roll loading unit 11b to ready position spaced upwardly pivoted moved laterally on the downstream side of the rotation shaft 16. After its pivot movement, drawn from the fourth web A ₄ rewinds the fourth liner sheet a, and held by the holding member 14 for stopping the tip above the preparation of the paper splicing. At this time, the second web A ₂ is swung to the paper splicing position above the web discharge device 12.

In the preparation state of the winding papers A ₃ and A ₄ , when a lot change occurs and a command for replacing the winding paper is issued, the left side (upstream side) holding the leading end of the third liner base paper a of the third winding paper A ₃ The holding member 14 is moved downstream toward the second liner base paper a of the second web A ₂ running on the splicer 13, and as shown in FIG. 13, the second web A ₂ running The tip of the third liner base paper a of the third web A _{3 that} is used one after another is brought into contact with the second liner base paper a, and the paper is spliced through an adhesive or the like previously applied to the contact surface. After the splicing, the second liner base paper a of the second web A ₂ is cut in the width direction, and the third liner base paper a of the third web A ₃ is run as shown in FIG.

After the splicing, the rotation shaft 16 of the second mill roll stand 10b is rotated counterclockwise as indicated by the arrow in FIG. 13, and chucks at the tips of the pair of first arms 17a on the side upstream of the rotation shaft 16 are provided. The used second web A ₂ remaining between 19 is swung downward to a position supported by the conveyance surface of the common web discharge device 12.

As shown in FIG. 14, when the second web A ₂ after use is supported by the transport surface of the web discharge device 12, the facing distance between the pair of first arms 17a is widened to hold the second web A _2. After the release, as shown by the arrow in the figure, the rotary shaft 16 is rotated counterclockwise to move the first arm 17a away from the web discharge device 12, and then the web discharge device 12 is driven to 2 web a ₂ is discharged toward the outer side in the device width direction.

  Thereafter, the operations shown in FIGS. 5 to 14 are repeated.

  In the winding paper replacement preparation device shown in the embodiment, a pair of first and second holding the winding paper A from both ends in the axial direction on the respective rotary shafts 16 of the two sets of first and second mill roll stands 10a and 10b. By providing two sets of the second arms 17a and 17b with a 180 ° phase shift in the circumferential direction, the web A can be rotatably supported by a pair of the first and second arms 17a and 17b. In the running state of the rewound liner base paper a, two pairs of first and second arms 17a and 17b out of the remaining three sets are used to make two webs A that are used next time and webs that are used one after another. Support and prepare for replacement.

Therefore, since the unwound sheet from the second paper roll A ₂ of next use base paper in use traveling to the third web A ₃ of after next used even in a state where the splicing is ready, the operation of the corrugator The web can be exchanged without reducing the speed, and a small lot can be produced efficiently.

Schematic of a corrugator apparatus that implements the web replacement preparation device according to the present invention Longitudinal front view of the mill roll stand shown in FIG. Plan view of the mill roll stand shown in FIG. Front view of a state in which the web is conveyed to a standby position outside the first and second mill roll stands Front view of a state where the web is sandwiched by the first arm of the first mill roll stand Front view of a state in which the web used next time is clamped by the first arm of the second mill roll stand. Front view of the next use web paper swung to the ready position Front view of a state in which the web used one after another is sandwiched by the second arm of the first mill roll stand Front view of a state where the web used for the next use is swung to the preparation position and the leading edge of the web used next time is spliced to the running base. Front view of a state in which used web is moved onto a common web discharge device Front view showing the state after nipping the web after use Front view of a state where webs used one after another are sandwiched by the second arm of the second mill roll stand Front view of a state where the webs used one after another are swung to the preparation position, and the leading end of the web used one after another is spliced to the running base paper. Front view of a state in which used web is moved onto a common web discharge device

Explanation of symbols

10a 1st mill roll stand 10b 2nd mill roll stand 11a 1st web feeding device 11b 2nd web loading device 12 web winding device 16 Rotating shaft 17a 1st arm 17b 2nd arm A ₁ 1st web A _2nd roll paper A _2nd time use A _3rd roll paper _3rd time use a liner base paper (base paper)

Claims (2)

  Two sets of mill roll stands that rotatably support the rolls, and two rolls of paper that are placed at the lower side of the two sets of mill roll stands and carry new rolls to the side of each mill roll stand And a common web discharge device that is disposed below the two sets of mill roll stands and receives the used web discharged from each of the mill roll stands and conveys the web to the outside position. Each of the pair of mill roll stands has a rotation axis, is supported so as to be movable symmetrically along the rotation axis, and is stopped on the conveyance surface of the web loading apparatus by symmetrical movement in a narrowing direction. Replacement of a web with a configuration in which two sets of a pair of arms are rotatably supported by holding the web in a standby state from both ends in the axial direction and are 180 degrees out of phase in the circumferential direction Bei apparatus. In the winding paper replacement preparation device according to claim 1,
The first roll paper on one roll paper carry-in device supported by one pair of arms in one mill roll stand is moved upward and arranged at a preparation position on the side of the rotating shaft, and the other mill roll stand The second web used next time on the other web transport device supported by the one pair of arms is moved upward and placed at a preparation position on the side of the rotating shaft of the other mill roll stand,
The rotating shaft of one of the mill roll stands is rotated so that the prepared first web is moved further upward, and the first base paper unwound from the first web travels through the paper passing path and is used one after another. A step of carrying in the third web to the standby position on the side of one of the mill roll stands by the one web feeding device;
After the upper end of the other pair of arms of one of the mill roll stands is aligned with the axis of the third web in the standby state, the facing distance between the other pair of arms is reduced. The third web is clamped, and after the third web is moved, the third web on one web transport device is moved to the upper preparation position, and the first web is moved between the first mill roll stand and the second mill roll stand. Moving to a paper splicing position above a common web discharge device disposed below;
Joining the second base paper of the second web used next time to the first base paper, and running the second base paper used next time by cutting the first base paper;
In the running state of the second base paper that has been spliced, the first web remaining between the pair of arms is moved downward until it is supported by a common web discharge device, and then the facing distance between the pair of arms is increased. Releasing the first web by the web discharge device after releasing the holding of the first web and moving the pair of arms further downward;
A step of carrying in the fourth roll paper used one after another to the standby position on the side of the other mill roll stand by the other roll paper carry-in device;
After moving upward until the tip of the other pair of arms of the other mill roll stand is aligned with the axis of the fourth web in the standby state, the opposing distance between the other pair of arms is reduced. A process of sandwiching four rolls of paper,
A step of moving the fourth web on the other web feeding device to the upper preparation position and moving the second web to the splicing position after the fourth web is sandwiched;
Connecting the third base paper of the third roll paper used one after another to the second base paper, and running the third base paper used one after another by cutting the second base paper;
In the running state of the third base paper that has been spliced, the second web remaining between the pair of arms is moved downward until it is supported by a common web discharge device, and then the facing distance between the pair of arms is increased. Releasing the second web by the web discharge device after releasing the holding of the second web and moving the pair of arms further downward;
A step of carrying in the fifth roll paper used one after another to the standby position on the side of one mill roll stand by the one roll paper carry-in device;
A method for preparing a replacement of a web, in which two webs are always kept in a ready state for replacement, the web being used next time and the web being used one after another in the running state of the base paper.

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