JP3621878B2 - Paper splicing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper splicing machine for performing paper splicing between an old web roll and a new web roll in a paper machine or the like.In placeRelated.
[0002]
[Prior art]
The roll base paper (web) wound up in a roll shape by the reel unit of the paper machine is transported to the subsequent unwinder, rewound, and fed to the winder. In this winder, the web is cut into a predetermined width by a slitter and wound up to a predetermined diameter.
[0003]
As an example of such an unwinder, there is a technique disclosed in Japanese Patent Publication No. 2-11493. An example using this technique will be described with reference to FIG.
The web is wound on a spool in a reel unit (not shown) of the paper machine, and conveyed to the unwinder 2 as a web roll. Then, the web roll 1A is transferred on the rail 4 using a transfer mechanism (not shown), and is placed on the web roll support 5 as shown by a solid line in FIG. The web roll support 5 is provided on both sides of the web roll 1 </ b> A, and the web roll 1 </ b> A is rotatably supported at both ends of the spool 3 by the web roll support 5.
[0004]
The web roll 1A is fed as indicated by an arrow A1, and the web 1 fed from the web roll 1A is transferred to the winder 6 through the guide roll 9. In the winder 6, the web 1 to be transferred is cut into a predetermined width along the flow direction (the transfer direction of the web 1) by the slitter 7, and then wound up to a predetermined diameter by the winding roll 8. A web roll 1D is formed.
[0005]
When the web roll 1A is rewound so that the amount of the web 1 wound around the spool 3 is reduced and the web roll 1C is brought into a state, the work by the unwinder 2 and the winder 6 is temporarily stopped. After the replacement with the new web roll 1B is performed, the operations of the unwinder 2 and the winder 6 are resumed.
[0006]
Hereinafter, a method for replacing such a web roll will be described.
As shown in FIGS. 5 and 6, support columns 11 are erected in close proximity to both sides of the web roll support 5. Note that, in FIG. 5, the front side support column 11 is shown by breaking the top from the middle part. A lift frame 12 is attached to each of the columns 11 so as to be movable in the vertical direction.
[0007]
Each lifting frame 12 is disposed so as to support both ends of the spool 3 of the web roll 1 </ b> A placed on the web roll support base 5, and the lifting frame 12 is vertically moved along the column 11 on each lifting frame 12. A drive mechanism (not shown) for driving in the direction is provided. Thereby, the raising / lowering frame 12 is supporting the web roll 1A by the both ends of the spool 3, and can drive the web roll 1A up and down along the support | pillar 11 in this support state.
[0008]
In FIG. 5, when the web amount of the web roll 1 </ b> A on the web roll support 5 is reduced and the web roll 1 </ b> C is in the state shown by a two-dot chain line in FIG. 5, the lifting frame 12 is moved below the spool 3. The web roll 1 </ b> C is pulled upward from the web roll support 5 by the lifting frame 12. Then, the web roll 1 </ b> C is lifted up to a predetermined height at which the new web roll 1 </ b> B in the standby state can be carried onto the web roll support 5 on the rail 4, as indicated by a one-dot chain line in FIG. 5.
[0009]
Then, the waiting new web roll 1B shown in FIG. 5 is transferred onto the rail 4 to the emptied web roll support 5 and set on the web roll support 5 as shown in FIG. Then, the rotational position of the new web roll 1B is set such that the starting end 1a is located on the upstream side of the web pressing device 14 in the rotational direction of the web roll 1B.
[0010]
The web pressing device 14 includes an arm 14a attached to one end of the column 11 so as to be tiltable, a web splicing roll 15 rotatably supported on the arm 14a, and a driving device (not shown) that drives the arm 14a. When performing paper splicing, the web splicing roll 15 is pressed from the state shown by the solid line separated from the web roll 1B in FIG. 6 against the web roll 1B as shown by the two-dot chain line by driving the arm 14a. And In this state, when the winding roll 8 (see FIG. 5) is rotated at a low speed, the web roll 1B is rotationally driven integrally with the web roll 1C via the web 1 on the web roll 1C side.
[0011]
A double-sided pressure-sensitive adhesive tape 13 is affixed to the starting end 1a of the web roll 1B along the width direction. When the double-sided pressure-sensitive adhesive tape 13 passes through the nip portion of the web splicing roll 15, the web roll 1B, The webs 1 respectively fed from 1C are joined via a double-sided adhesive tape 13 and joined together. When the paper splicing is performed in this manner, the web 1 fed from the web roll 1C is cut by the web cutting device 16 attached to the column 11, and the web rolls 1B and 1C are separated. This completes the web roll replacement. Thereafter, the web winding speed of the drive roll 8 is gradually increased, and the unwinder 2 and the winder 6 are returned to the normal operation state.
[0012]
The web cutting device 16 includes a blade portion 16a and a drive mechanism 16b that moves the blade portion 16a forward and backward with respect to the web 1. During standby, the blade portion 16a is retracted from the pass line of the web 1, When cutting the web, the blade portion 16a is moved toward the web 1 and brought into contact with the web 1.
Further, normally, at the time of paper joining, the web roll 1B on the unwinder side is a driven (rotating) side driven by the drive roll 8, but may be lightly driven.
[0013]
In the example shown in FIGS. 5 and 6, the web rolls 1A, 1B, 1C are driven to rotate counterclockwise as indicated by an arrow A1, and the web 1 is pulled out from above the web rolls 1A, 1B, 1C. Will be. Therefore, pulling out the web 1 as shown in FIGS. 5 and 6 is hereinafter referred to as top pulling.
[0014]
[Problems to be solved by the invention]
By the way, the web has front and back, and when winding with the winder 6, there are a winding method in which the front side of the web is directed outward and a winding method in which the front side of the web is directed inward. It is done.
For example, in the example shown in FIG. 5 and FIG. 6, if the web 1 is wound with the table 1b facing outward to form the web rolls 1A, 1B, 1C, the web roll 1D is the web 1 Table 1b is wound outward and configured. On the contrary, in order to form the web roll 1D by winding the back 1c of the web 1 outward, the web 1 is directed toward the winder 6 with the back 1c facing upward as shown in FIG. The web rolls 1A, 1B, 1C are rotated in the direction indicated by the arrow A2 and the web 1 is unwound from below the web rolls 1A, 1B, 1C (this is hereinafter referred to as subtraction). There is a need to.
[0015]
However, in the above-described conventional technology, there are the following problems when subtracting in this way.
That is, when performing paper splicing, at the time of up-drawing as shown in FIGS. 5 and 6, the web 1 and the adhesive tape 13 are polymerized at the joint portion as shown in FIGS. 6 and 9B. On the other hand, at the time of subtraction as shown in FIGS. 7 and 8, as shown in FIGS. 8 and 9A, the web 1 on the web roll 1C side and the web 1 on the web roll 1B side are mutually connected. The same surfaces (here, Table 1b and Table 1b) are bonded together facing each other. During operation, a tensile force acts on the web 1, but the bonding shown in FIG. 9A has a low bonding strength with respect to the tensile force, and the webs 1, 1 are easily peeled off at the bonded portion or bonded to the web 1. There is a problem that the adhesion of the tape 13 becomes unstable, and the web 1 is easily broken due to the biasing force acting on the web 1 and the tensile force acting.
[0016]
Further, in order to perform paper splicing by subtraction, first, as shown by a solid line in FIG. 8, the starting end 1a of the web 1 on the new web roll 1B side is located upstream of the web splicing roll 15 in the arrow A1 direction. Position. And as mentioned above, while the web splicing roll 15 presses the web 1 on the web roll 1B side and the web 1 on the old web roll 1C side against the peripheral surface of the web roll 1B, the winding roll 8 (FIG. 5) at low speed. As a result, the new web roll 1B follows the direction indicated by the arrow A1, and eventually the start end 1a of the new web roll 1B and the web 1 on the old web roll 1C side are pressed and joined by the web splicing roll 15.
[0017]
Thereafter, when the joint portion passes between the web splicing roll 15 and the web roll 1B, the joint portion is one point in FIG.chainAs shown by the line, the web 1 slides down from the web roll 1B, and the web 1 is slackened around the joint. In such a state, when the take-up roll 8 is rotated and the web 1 is pulled toward the take-up roll 8, a strong impact is applied to the slack portion when the web 1 is switched from the slack state to the tension state. There is a possibility that the web 1 will be broken.
[0018]
Further, when the operation of the unwinder 2 and the winder 6 is restarted in a state where the web 1 is slack, the slack affects the subsequent apparatus. For example, the tension of the web 1 becomes insufficient and cutting by the slitter 7 is not possible. There is a risk of becoming stable.
Further, in FIG. 8, the web path line from the web roll 1 </ b> C lifted by the lifting frame 12 to the web splicing roll 15 is a line indicated by a two-dot chain line in the upper drawing, but is indicated by a solid line in the lower drawing. Line. At the time of paper splicing, the web cutting device 16 moves the blade portion 16a toward the web 1 to cut the web 1. Here, the amount of movement of the blade portion 16a is the amount of upward pulling. Set for the case. In the lower pulling, the web pass line is separated from the web cutting device 16 as compared with the upper pulling. Therefore, the web 1 cannot be cut without reaching the blade 16a, or the web is not cut even if the blade 16a arrives. There is a possibility that the cutting of 1 becomes unstable.
[0019]
The present invention has been devised in view of such problems, and is capable of stably performing paper splicing, and is capable of avoiding the influence of paper splicing on subsequent devices during paper splicing.PlaceThe purpose is to provide.
[0020]
[Means for Solving the Problems]
For this reason, the paper splicing device of the present invention according to claim 1 presses the web fed out from the old web roll against the new web roll, and a pressing roll that joins the old web roll and the new web roll; Web cutting means for cutting the web fed from the old web roll upstream of the joining portion in the web conveyance direction, and provided upstream of the web cutting means in the web conveyance direction and fed from the old web roll TheTheA guide roll for bringing the web close to the web cutting means;The web pass line from the old web roll to the pressing roll overlaps the web pass line from the old web roll to the pressing roll when pulling up the old web roll when the web is cut when the old web roll is drawn down. The web is pushed into the web cutting means side by the guide rollIt is characterized by that.
[0021]
A paper splicing device according to a second aspect of the present invention is the paper splicing device according to the first aspect, wherein the joint portion is used at the time of paper splicing.By pressing both sides of the web on the downstream side in the web conveyance direction, the web slack generated during the splicing is not transmitted downstream in the web conveyance direction from the pressed portion.It is characterized by being composed.
A paper splicing device according to a third aspect of the present invention is the paper splicing device according to the first aspect, wherein the joint portion is used at the time of paper splicing.The web is configured so that the web slack generated at the time of paper splicing is not transmitted to the downstream side in the web conveyance direction from the pressed portion by pressing both sides of the web on the downstream side in the web conveyance direction with the nip of a pair of rollers. Has beenIt is characterized by that.
A paper splicing device according to a fourth aspect of the present invention is the paper splicing device according to any one of the first to third aspects, wherein the pressing roll is placed on a guide rail in a posture toward the axis of the new web roll. It is characterized by moving forward and backward.
[0022]
Claim5The paper splicing device of the present invention as describedIn any one of 1-4In the paper splicing device described above, a moving mechanism for moving the guide roll is provided..
[0023]
The paper splice of the present invention according to claim 6apparatusIsThe paper splicing device according to any one of claims 3 to 5, further comprising a brake mechanism for adjusting rotation of one of the pair of rolls.It is characterized by that.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
First, the paper splicing as the first embodiment of the present inventionIn place1 to 3 show a paper splicing as a first embodiment of the present invention.In placeFIG. 1 is a schematic side view showing the configuration, FIG. 2 is a schematic perspective view showing the configuration of a folded portion of a new web roll for explaining the paper splicing method, and FIG. It is a typical top view which shows the structure of the drive mechanism of the web roll.
[0025]
In addition, the same code | symbol is attached | subjected about the member mentioned as a prior art, and the description is abbreviate | omitted.
The unwinder 2 equipped with the paper splicing device 50 as the first embodiment of the present invention is configured in the same manner as the conventional device described above. That is, as shown in FIG. 1, the unwinder 2 includes a web roll support base 5 that rotatably supports the web roll, and a pair of rails 4 provided substantially horizontally on the upstream side of the web roll support base 5; A new web roll (not shown) set at the upstream end of the rail 4 is supported by a carriage (not shown) movably mounted on the rail 4 so as to be transported to the web roll support base 5 and can be moved up and down on the column 11. And a pair of support arms 12 that rotatably support the old web roll 1C.
[0026]
The web splicing device 50 includes a web pressing device 14 having a web splicing roll (pressing roll) 15, a web cutting device (web cutting means) 16, and a guide attached to a support frame 30 protruding from the support 11. A roll 31 and a pressing roll 10 provided to face the guide roll 9 so as to press the web 1 on the downstream side of the joint portion between the new web roll 1B and the old web roll 1C are configured.
[0027]
As described above as the prior art, the web pressing device 14 is provided with a driving device (not shown). With this driving device, the web splicing roll 15 at the front end can be separated from and brought into contact with the new web roll 1B. Yes.
The guide roll 31 is attached to a drive shaft 32 a of an actuator (moving mechanism, here, a hydraulic cylinder such as a hydraulic cylinder or an air cylinder) 32 installed on the support frame 30. The actuator 32 is provided so as to face the web cutting device 16 with the web 1 fed from the old web roll 1 </ b> C interposed therebetween, and the guide roll 31 extends the pass line of the web 1 by expanding and contracting the drive shaft 32 a. The cutting device 16 can be brought close to the cutting device 16.
[0028]
In addition, the holding roll 10 is provided with a moving mechanism (not shown), and is moved away from the guide roll 9 in FIG. 1 as shown by a solid line in normal operation, and as shown by a broken line at the time of paper joining. The guide roll 9 is pressed. Although explained as a problem of the prior art, at the time of subtracting, the web 1 is slackened around the joint as shown by the broken line at the time of paper joining, so the web 1 is pressed by the rolls 9 and 10. The slack does not affect the winding roll 8 side (winder 6 side). A brake mechanism (not shown) is provided at the shaft end of the presser roll 10, and the rotation of the presser roll 10 can be adjusted by this brake mechanism.
[0029]
Although omitted in FIG. 1, as shown in FIG. 3, a motor 22 for driving the web rolls 1 </ b> A, 1 </ b> B, and 1 </ b> C on the web roll support base 5 is provided at the side of the web roll support base 5. It is mounted on the motor base 21. The drive shaft 22a of the motor 22 is connected to one end of the rotating shaft 24 on the moving table 23 through a joint 25, and the joint 25 is slidable in the axial direction by providing, for example, a spline. An external gear-like joint 26 is attached to the other end of the rotary shaft 24, and the web rolls 1 </ b> A, 1 </ b> B are engaged by engaging the joint 26 with an internal gear-like joint at the end of the spool 3. , 1C is due to the motor 22RecirculationIt is designed to be driven by rolling.
[0030]
In addition, at the time of pulling down, before installing the new web roll 1B on the web roll support base 5, in FIG. 2, the starting end 1a of the new web roll 1B indicated by a one-dot chain line is folded outward with a predetermined width L, As shown by a solid line, the folded portion 1a is formed in advance. And the double-sided adhesive tape 13 is affixed with the width | variety smaller than the width | variety of the folding | returning part 1a on the outer side (side facing the web 1 sent out from the old web roll 1C) of the folding | returning part 1a, It functions as an adhesive part.
[0031]
In addition, the folding width L should just be more than the width | variety of the double-sided adhesive tape 13, and is suitably set according to design conditions. Further, instead of using the double-sided pressure-sensitive adhesive tape 13, an adhesive may be applied to the folded portion 1a to form an adhesive portion.
Note that both side ends of the folded portion 1a are lightly temporarily fixed with an adhesive tape 34 (see FIG. 2, omitted in FIG. 1) or the like.
[0032]
Then, as shown in FIG. 1, the folded portion 1 a is positioned upstream of the nip portion of the web splicing roll 15 in the rotation direction of the new web roll 1 B at the time of paper splicing (direction indicated by arrow A 1). The splicing roll 15 is pressed against the new web roll 1B. Next, by rotating the take-up roll 8 clockwise, the web 1 fed from the old web roll 1C is conveyed to the take-up roll 8 side and is pressed against the web 1 by the web splicing roll 15. The web 1 of the new web roll 1B is conveyed to the take-up roll 8 side.
[0033]
And when the folding | returning part 1a of the new web roll 1B passes the web splicing roll 15, it is pressed by the new web roll 1B and the old web roll 1C via the double-sided adhesive tape 13 provided in the folding | returning part 1a. Are to be joined.
At this time, by providing the folded portion 1a on the new web roll 1B, the surface 1b of the web 1 on the old web roll 1C side and the surface 1c of the web 1 on the new web roll 1B side face each other (old web). The web 1 on the roll 1C side and the web 1 on the new web roll 1B side are pasted so as to face each other in the opposite direction). That is, as shown in FIG. 9 (b), the tensile strength at the joined portion (joined portion) is improved.
[0034]
Since the paper splicing device 50 according to the first embodiment of the present invention is configured as described above, the following method (the first embodiment of the present invention) is used when subtracting.TakePaper splicing between the new web roll and the old web roll 1C is performed by the paper splicing method).
That is, after the rotation of the winding roll 8 and the old web roll 1 </ b> C is stopped, the old web roll 1 </ b> C is lifted upward from the web roll support 5 by the lifting frame 12, and then the new web roll is placed on the web roll support 5. 1B is installed. Then, the rotational position of the new web roll 1B is adjusted so that the starting end (folding portion) 1a of the new web roll 1B is positioned upstream of the nip portion of the web splicing roll 15 as shown in FIG. At that time, the web splicing roll 15 is separated from the web roll 1B).
[0035]
Then, after the web splicing roll 15 is pressed against the new web roll 1B, the driving roll 8 is operated, and the web 1 on the old web roll 1C side and the web 1 on the new web roll 1B side are indicated by an arrow B1 in the figure. Send in the direction shown. Then, at the nip portion of the web splicing roll 15, the folded portion 1a of the new web roll 1B is pressed against the web 1 on the old web roll 1C side, and the new web is passed through the double-sided adhesive tape 13 attached to the folded portion 1a. The roll 1B and the old web roll 1C are joined.
[0036]
At this time, as described above, the joint portion between the new web roll 1B and the old web roll 1C is attached as shown in FIG. Therefore, there is an advantage that it is possible to improve the tensile strength of the joined portion as compared with the joined portion at the time of pulling down in the conventional apparatus shown in FIG. 9A and prevent the joined portion from being peeled off or torn. .
[0037]
And the web pass line from the old web roll 1C to the web splicing roll 15Web path line downstream of at least the guide roll 31 in the web conveyance directionHowever, there are two points in FIG.chainThe drive shaft 32a of the actuator 32 is extended so as to overlap with the web pass line at the time of the upper pulling indicated by the line, and the web 1 is pushed into the web cutting device 16 side by the guide roll 31. Thereby, there exists an advantage that the web 1 can be stably cut | disconnected by the web cutting device 16 also at the time of subtraction.
[0038]
Then, after the web 1 on the old web roll 1C side is cut by the web cutting device 16 and the paper splicing is completed, the joint passes through the nip portion of the web splicing roll 15 as the new web roll 1B rotates. Then, it slides down from the body portion of the new web roll 1B, and as a result, the vicinity of the joint portion is slackened as shown by the broken line in FIG.
[0039]
At this time, the pressing roll 10 is pressed against the guide roll 9 as shown by a broken line in FIG. Thereby, there exists an advantage that this slack can prevent having a bad influence on the downstream (winder 6) of the guide roll 9. FIG.
Further, as described above as a problem of the prior art, when the driving roll 8 is operated in a state where the web 1 is slackened in this way and the conveyance of the web 1 in the direction indicated by the arrow B1 is resumed, the web 1 is slackened. There is a possibility that a large impact is generated on the web 1 and the web 1 is torn at the moment of switching from the state to the pulled state.
[0040]
So bookAccording to the embodimentIn the paper splicing method, after the old web roll is cut and before normal operation is resumed, the motor 22 (see FIG. 3) is operated to invert the new web roll 1B at a low speed in the direction indicated by the arrow A1 in the figure. Remove such slack. Thereafter, the drive roll 8 is returned from the low rotation speed to the normal rotation speed, the new web roll 1B is rotated forward in the direction indicated by the arrow A2, and the normal winding operation by the winder 6 is resumed. Therefore, there is an advantage that the web 1 can be prevented from being broken due to the slackness of the web 1 caused by the paper splicing.
[0041]
The adhesive tape 34 shown in FIG. 2 is peeled off when the folded portion 1a is fed to the winder 6 side and separated from the old web roll 1B, or by the operator at a predetermined timing after the paper splicing is completed. It will be peeled off.
Next, paper splicing as a second embodiment of the present inventionIn placeexplain about. FIG. 4 is a schematic side view showing the configuration of the paper splicing device as the second embodiment of the present invention. In addition, about the member mentioned above in the prior art and 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0042]
In the first embodiment described above, as shown in FIG. 1, the web splicing roll 15 is attached to the swinging end of the arm 14 a that is swingably supported by the support column 11. The diameter of the new web roll 1B that can be pressed by the web splicing roll 15 is limited to a very small range according to the length of the arm 14a.
That is, when the arm 14a is set short so that it can be applied to a new web roll having a relatively large diameter, if the diameter of the new web roll is relatively small, the web splicing roll 15 does not reach the new web roll, On the other hand, if the arm 14a is set to be long so that it can be applied to a new web roll having a relatively small diameter, if the diameter of the new web roll is relatively large, the arm 14a comes into contact with the new web roll and the web The splicing roll 15 cannot be pressed against the new web roll.
[0043]
Therefore, the paper splicing device 60 according to the second embodiment of the present invention is different from the paper splicing device 50 of the first embodiment shown in FIG. As shown in FIG. 4, the web splicing roll 15 is configured to be able to advance and retreat on a straight line substantially perpendicular to the peripheral surface of the new web roll 1B.
That is, the paper splicing device 60 of the present embodiment is hung on a pair of guide rails 40 fixed to each column 11, a movable table 41 slidably provided on each guide rail 40, and the movable tables 41, 41. A web splicing roll (pressing roll) 15, a web cutting device 16 and a guide roll 45 are provided, and a guide roll 31 for pushing the web 1 fed from the old web roll 1C to the web cutting device 16 side when pulling down. It is configured.
[0044]
The guide rail 40 is fixed to each column 11 in a posture toward the axis of the new web roll 1B on both sides of the new web roll 1B, and a driving mechanism (not shown) is provided on the movable table 41. Therefore, the web splicing roll 15, the web cutting device 16, and the guide roll 45 attached to the moving base 41 are moved by moving the moving base 41 on the guide rail 40 using the drive mechanism. It is possible to advance and retract substantially perpendicularly to a straight line.
[0045]
The guide roll 45 is for stabilizing the pass line of the web 1 pushed into the web cutting device 16 side by the guide roll 31.
In the first embodiment described above, the moving mechanism that moves the guide roll 31 to the web cutting device 16 side is constituted by a fluid pressure cylinder. In this embodiment, the moving mechanism includes the guide rail 43 and the moving mechanism. The guide roll 31 is attached and a movable table 44 that slides on the guide rail 43 is provided.
[0046]
The guide rail 43 is supported by the support column 42 so as to face the web cutting device 16 with the web 1 interposed therebetween and substantially horizontally. Then, by moving the moving table 44 on the guide rail 43 by a driving mechanism (not shown) provided on the moving table 44, the web cutting device 16 converts the pass line of the web 1 sent from the old web roll 1C by the guide roll 31. To move to the side.
[0047]
The paper splicing device 60 according to the second embodiment of the present invention is configured as described above, and paper splicing is performed in substantially the same manner as in the first embodiment. At this time, since the web splicing roll 15 can be moved substantially perpendicular to the peripheral surface of the new web roll 1B, it can be moved with respect to the new web roll 1B with a large stroke. Therefore, in FIG. 4, the web 1 fed from the old web roll 1 </ b> C is pressed against a new web roll 1 </ b> B indicated by a solid line and a new web roll 1 </ b> B indicated by an alternate long and short dash line. There is an advantage that paper splicing can be performed.
[0048]
The paper splicing of the present inventionIsThe present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.
For example, in each of the above-described embodiments, the guide roll 31 is configured to linearly advance and retreat with respect to the web 1 sent out from the old web roll 1C. The guide roll 31 transfers the web to the web cutting device 16. The guide roll 31 may be attached to the swinging end of the arm, and the arm may be swung to bring the web close to the web cutting device 16.
[0049]
【The invention's effect】
As described above in detail, according to the paper splicing device of the present invention described in claim 1,By the guide roll so that the web pass line from the old web roll to the press roll overlaps the web pass line from the old web roll to the press roll when pulling up the old web roll when the web is cut when the old web roll is pulled down. Push the web into the web cutting meansTherefore, there is an advantage that the web can be stably cut by the web cutting means, and the paper splicing can be performed stably.
[0050]
According to the paper splicing device of the present invention as set forth in claim 2, the joint portion at the time of paper splicingBy pressing both sides of the web on the downstream side in the web conveyance direction, the web slack generated at the time of paper splicing is not transmitted to the downstream side in the web conveyance direction from the pressed location.Since it is configured, there is an advantage that it is possible to avoid the influence of the paper splicing on the subsequent apparatus during the paper splicing.
According to the paper splicing device of the present invention as set forth in claim 3, the joint portion at the time of paper splicingBy pressing both sides of the web further downstream of the web conveyance direction with the nip of the pair of rollers, the web slack is not transmitted to the downstream side of the web conveyance direction from the pressed portion.Therefore, there is an advantage that the influence of the paper splicing on the subsequent apparatus can be avoided at the time of paper splicing.
According to the paper splicing device of the present invention as set forth in claim 4, since the pressing roll is advanced and retracted on the guide rail in a posture toward the axis of the new web roll, the paper splicing is performed with respect to the web roll having different diameters in a wide range. There is an advantage that can be performed.
[0051]
Claim5According to the paper splicing device of the present invention, the web fed from the old web roll by the guide roll by moving the guide roll by the moving mechanism.TheThere is an advantage that it can be brought close to the web cutting means stably..
[Brief description of the drawings]
FIG. 1 is a schematic side view showing configurations of a paper splicing device, an unwinder, and a winder as a first embodiment of the present invention.
FIG. 2 is a first embodiment of the present invention.TakeIt is a typical perspective view which shows the structure of the folding | returning part of the new web roll for demonstrating the paper splicing method.
FIG. 3 shows a paper splicing as a first embodiment of the present invention.In placeIt is a typical top view which shows the structure of the drive mechanism of the web roll on this web roll support stand.
FIG. 4 is a schematic side view showing a configuration of a paper splicing device as a second embodiment of the present invention.
FIG. 5 is a schematic side view showing an entire configuration of a conventional paper splicing device, an unwinder, and a winder.
FIG. 6 is a diagram for explaining a paper splicing method in a conventional paper splicing device, and is a schematic side view showing configurations of the paper splicing device and an unwinder.
FIG. 7 is a diagram for explaining paper splicing at the time of subtraction in a conventional paper splicing device, and is a schematic side view showing the configuration of the paper splicing device and the unwinder (the column 11, the lifting frame 12, The web pressing device 14 and the web cutting device 16 are not shown).
FIG. 8 is a diagram for explaining a problem of a conventional paper splicing device, and is a schematic side view showing a structure of a paper splicing device and an unwinder in lower holding.
FIGS. 9A and 9B are schematic side views showing an enlarged joining state of a joining portion by a conventional paper splicing device, in which FIG. 9A is a diagram showing a lowering time, and FIG. It is.
[Explanation of symbols]
1 Web
1A Web roll being unwound on a web roll support stand
1B New web roll
1C Old web roll
1a Folding part
2 Unwinder
3 Spool
4 rails
5 Web roll support stand
6 Winder
7 Slitter
8 Take-up roll
9 Guide roll
10 Web holding roll
11 Prop
12 Lifting frame
13 Double-sided adhesive tape
14 Web pressing device
14a arm
15 Web splicing roll (pressing roll)
16 Web cutting device (web cutting means)
16a blade
16b Drive mechanism
20 Drive device
21 Motor stand
22 Motor
22a Drive shaft
23 Moving platform
24 axes
25 Coupling
26 Coupling
30 Support frame
31 Guide roll
32 Fluid pressure cylinder (movement mechanism)
32a Drive shaft
34 Adhesive tape
40 guide rail
41 Moving table
42 props
43 Guide rail
44 Moving platform
45 Guide roll
50, 60 splicing device

Claims (6)

A pressing roll that presses the web fed from the old web roll against the new web roll and joins the old web roll and the new web roll;
Web cutting means for cutting the web sent out from the old web roll on the upstream side in the web conveyance direction from the joint;
Provided in the web transport direction upstream side of said web cutting means, the web fed from該旧web roll and a guide roll for proximity to said web cutting means,
The web pass line from the old web roll to the pressing roll overlaps the web pass line from the old web roll to the pressing roll when pulling the old web roll when the web is cut when the old web roll is pulled down. As described above, the web splicing device is characterized in that the web is pushed into the web cutting means side by the guide roll . By pressing both sides of the web on the downstream side in the web transport direction from the joint during paper splicing, the slackness of the web that occurs during paper splicing is not transmitted downstream in the web transport direction from the pressed location. The paper splicing device according to claim 1, wherein the paper splicing device is provided. When the web is spliced , both sides of the web are pressed by the nip between a pair of rollers on the downstream side in the web conveyance direction from the joining portion, so that the slackness of the web that occurs at the time of paper splicing is downstream in the web conveyance direction from the pressing portion. The paper splicing device according to claim 1, wherein the paper splicing device is configured not to transmit to the paper. The paper splicing device according to any one of claims 1 to 3, wherein the pressing roll is moved back and forth on a guide rail in a posture toward the axis of the new web roll. The paper splicing device according to any one of claims 1 to 4, wherein a moving mechanism for moving the guide roll is provided. The paper splicing device according to any one of claims 3 to 5, further comprising a brake mechanism for adjusting rotation of one of the pair of rolls.

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