JP2759224B2 - Splicing method and apparatus - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention joins a new base paper drawn from another base paper roll to an old base paper being fed and supplied from a base paper roll loaded in a mill roll stand. The present invention relates to a paper splicing method and a paper splicing method capable of performing paper splicing without extending an end of an old base paper that is not stuck to a new base paper on the upstream side in a base paper supply direction from a paper splice position.

Prior art A corrugated paper is provided with a required pitch waveform, the corrugated corrugated top and the liner are glued and bonded to produce a single-sided corrugated cardboard sheet, and a back liner is attached to the single-sided corrugated cardboard sheet to form a double-sided corrugated cardboard sheet The corrugating machine that manufactures is widely spread. In this corrugating machine, a single facer for manufacturing a single-sided cardboard sheet and a double facer for bonding a back liner to the obtained single-sided cardboard sheet are used as important devices. Further, as ancillary equipment, webs such as core paper, liners and other back liners (these webs are hereinafter referred to as “base paper”).
Is supplied to the single facer or the double facer.

The base paper is loaded into a base paper supply device in a state of a roll having a predetermined diameter (hereinafter, referred to as a "base paper roll") wound around a paper core serving as a core, where the base paper is fed and supplied.
In addition, a splicer for automatically splicing the old base paper being fed and supplied to the new base paper is arranged above the base paper supply device in accordance with the order change that occurs during the operation of the corrugation machine, and the splicer of the corrugation machine is provided. It is configured to be capable of continuous operation.

The present invention relates to a method and an apparatus for splicing an old base paper and a new base paper that are fed and supplied in, for example, a corrugating machine. First, a schematic configuration of a base paper supply apparatus and a splicer will be described. For convenience of explanation, “right side, left side” refers to the frame 18 in FIG.
Are referred to in a relationship based on the center in the longitudinal direction.

(Mill Roll Stand) As a base paper supply device used in a corrugating machine, a so-called swing arm type mill roll stand shown in FIG. 6 is widely known. This mill roll stand 10
Has two swing arm mechanisms 12 that can rotate by a required angle.
The base paper roll 14 is rotatably held by each swing arm mechanism 12. Then, the base paper fed from the base paper roll 14 loaded in one swing arm mechanism 12 is supplied to a required portion of a corrugating machine (not shown), and the base paper roll 14 loaded in the other swing arm mechanism 12 waits for paper splicing. It has become.

[About the outline of the splicer]

A splicer 16 for splicing the old base paper OW and the new base paper NW is disposed above the mill roll stand 10 configured as described above. In the splicer 16, a pair of frames 18, 18 spaced apart in the width direction of the base paper.
Between them (only one is shown), a receiving plate 30 is erected at the center position in the base paper feeding direction, and the splice heads 20 and 20a can be moved toward and away from each other with the receiving plate 30 interposed therebetween. It is arranged. And both splice heads 20,2
As shown in FIG. 6, the old base paper OW and the new base paper NW are spliced in a state where Oa is brought close to the receiving plate 30 as shown in FIG. Further, when the new base paper NW is set on the splice head 20 (20a), the head 20 (20a) is configured to be unfolded as shown by a two-dot chain line in FIG.
The splicer 16 has a built-in storage mechanism 22 for storing a predetermined amount of base paper, and performs a splicing operation while consuming the base paper stored in the mechanism. The splicing can be performed without stopping the supply of the base paper to the paper.

(Regarding the idler roll disposed on the frame) As shown in the figure, between the frames 18, 18 of the splicer 16, above the right splice head 20 which stands by at the paper splicing position (position close to the receiving plate 30), A fixed idler roll 44 is rotatably supported. On the right side of the frame 18, a pair of fixed idler rolls 35 and 36 are disposed in parallel with a predetermined space therebetween. That is, the head 20
The base paper guided through an idler roll 34 (described later) disposed in the base is wound around a fixed idler roll 44 and drawn out to the right of the frame 18.
After being wound around 6, it is supplied to the storage mechanism 22.

A movable idler roll 46 is provided rotatably at a position opposed to the stationary idler roll 44 with the base paper being sandwiched therebetween so as to be able to freely approach and separate from the roll 44 in parallel. The movable idler roll 46 is urged by a cylinder 52 and pressed against a fixed idler roll 44 as shown in FIG.
Both rolls 44 and 46 function to hold the base paper. This prevents the old base paper OW supplied from the storage mechanism 22 from being pulled out from the splice head 20 during the splicing, thereby preventing the splicing position from shifting. Further, when the new splicing NW is supplied to the paper consuming mechanism after the splicing is completed, the sticking portion between the old base paper OW and the new base paper NW passes between the idler rolls 44 and 46 in contact with each other. By doing so, the sticking portion is firmly pressed.

(About splice head) Each of the splice heads 20 includes a nip bar 24, a cutting device 26, a drag bar 28, and an idler roll 34,
Since the configuration is symmetrical, in FIG. 6, the splice head 20 located on the right side will be described, and the members of the splice head 20a located on the left side will be designated with the same reference numerals with "a" attached. The explanation is omitted.

At the lower end of the splice head 20, an idler roll 34 extending in the width direction of the base paper is rotatably supported pivotally, and is fed from the base paper roll 14 loaded on the swing arm mechanism 12 on the right side of the mill roll stand 10. The wrapped base paper is wound around the idler roll 34, passed through the right side of the receiving plate 30, wound around the fixed idler rolls 44, 35 and 36, and supplied to the storage mechanism 22. When the base paper is fed from the base paper roll 14 of the left swing arm mechanism 12, the base paper is wound around the idler roll 34a of the left splice head 20a and then passed through the left side of the receiving plate 30. At the same time, it is supplied to the storage mechanism 22 via the fixed idler rolls 44, 35, 36.

(About the nip bar) At the upper end of the splice head 20, as shown in FIG.
A nip bar 24 extending in the width direction of the base paper is provided at a position not interfering with the receiving plate 30, and the nip bar 24 is
It is configured to be urged by a cylinder (not shown) arranged on the side opposite to the side facing the base paper, and to advance and retreat in parallel. The nip bar 24 has, for example, a built-in vacuum suction device, and a new base paper NW is provided on the surface facing the other nip bar 24a.
Is configured to be able to adsorb and hold the tip of the. When the old base paper OW is fed out and supplied via the right splice head 20, as described later, the front end of the new base paper NW is suction-held on the nip bar 24a of the left splice head 20a, and the splicing is waited. (See FIG. 7A). Therefore, the nip bars 24, 2
The original base paper OW passed between the two nip bars 24, 24a by bringing the 4a close to and bringing the opposite ends into contact.
And the new base paper NW.

(About Drag Bar) Above the idler roll 34, a drag bar 28 facing the receiving plate 30 is arranged extending in the width direction of the base paper. The drag bar 28 is configured so that a base paper is sandwiched between the drag bar 28 and the receiving plate 30 by urging a cylinder 38 disposed at an end portion separated from the receiving plate 30. However, the nip bar 2
The old base paper OW is held between two points separated in the vertical direction (base paper supply direction) by holding the base paper between the drag bar 28 and the receiving plate 30 while bringing the base paper 4, 24a close to each other. , Held in tension.

(Regarding Cutting Device) As shown in FIG. 7, a cutting device 26 is provided between the nip bar 24 and the drag bar 28 in the splice head 20.
Is extended in the width direction of the base paper, and the tip of the knife is directed to the receiving plate 30. This knife
The cylinder 40 is provided at the end of the 32 that is separated from the receiving plate 30 facing the knife 32. A slot extending in the width direction of the base paper is provided at a position of the receiving plate 30 facing the knife 32.
30a is drilled, and as shown in FIG.
Is applied to extend the piston rod 41, so that the knife 32 faces the long hole 30a to cut the base paper. That is, as described above, since the base paper is held in tension at the two points located above and below the cutting device 26, the base paper can be cut smoothly by the knife 32 over the entire length in the width direction.

(Operation of the Splicer According to the Prior Art) By the splicer 16 configured as described above, for example, the right swing arm mechanism in the mill roll stand 10
The base paper roll loaded on the left swing arm mechanism 12 from the old base paper OW fed from the base paper roll 14 loaded on 12
The case where splicing is performed on the new base paper NW drawn from 14 will be described.

As shown in FIG. 6, the old base paper OW fed from the base paper roll 14 loaded in the right swing arm mechanism 12 is wound around the right idler roll 34 and passed through the right side of the receiving plate 30. The paper is supplied to a paper consumption mechanism (not shown) through the storage mechanism 22 via the fixed idler rolls 44, 35, and 36. Also, while the old base paper OW is being consumed, the new base paper NW pulled out from the base paper roll 14 loaded in the left swing arm mechanism 12 is inserted into the nip bar 24a of the left splice head 20a moved to the end of the splicer 16. Is held by suction. Then, as shown in FIG. 6, the splice head 20a is brought close to the right splice head 20 with the receiving plate 30 interposed therebetween, and waits for the splicing. It should be noted that a double-sided adhesive tape is previously attached to the facing surface of the new base paper NW that faces the facing nip bar 24.

When an order change command is issued, the braking means provided in the swing arm mechanism 12 operates to stop the rotation of the base paper roll 14. As a result, the supply of the old base paper OW passing through the splice head 20 is stopped, but at this time, the old base paper OW stored in the storage mechanism 22 is consumed. Not interrupted. Further, the movable idler roll 46 moves close to the fixed idler roll 44, and holds the old base paper OW between the two rolls 44, 46.

When the OW traveling of the old base paper stops, the heads 20, 20a
As shown in FIG. 7 (a), the nip bars 24, 24a are synchronously urged by the cylinder to bring the opposite ends thereof into contact. Since the new base paper NW to which the double-sided adhesive tape is attached is held by suction on the left nip bar 24a, the new base paper NW is attached to the old base paper OW. Further, the cylinders 38, 38a of the drag bars 28, 28a are urged, and the bars 28, 28a
Comes in contact with the side of the receiving plate 30, and the old base paper OW and the new base paper NW
Therefore, the old base paper OW is held in a tension state between the nip bar 24 and the drag bar 28.

Next, as shown in FIG. 7 (b), the receiving plate 30 and the old base paper are used.
The cylinder 40 of the knife 32 opposing the OW is urged to make the tip of the knife 32 face the long hole 30a of the receiving plate 30. As described above, since the old base paper OW is held in a tension state, the old base paper OW is easily cut in the width direction. Thereby, the nip bars 24, 24a and the drag bars 28, 28a
To the expected position, and the swing arm mechanism 12
Is released, the new base paper NW is supplied to the paper consuming mechanism following the consumption of the old base paper OW. At this time, since the movable idler roll 46 is still close to the fixed idler roll 44, the bonding portion between the new base paper NW and the old base paper OW passing between the two rolls 44 and 46 is firmly pressed. . After a predetermined time, the movable idler roll 46 separates from the fixed idler roll 44 and returns to the expected position.

Problems to be Solved by the Invention In the splicer 16 described above, the old base paper OW is
The old base paper OW is cut by a knife 32 located between the two bars 24 and 28 while holding the two bars 24 and 28 in tension. In this case, since the old base paper OW and the new base paper NW are attached at the position where the nip bar 24 is provided, as shown in FIG. 7 (b), upstream from the attachment position in the base paper supply direction, Old base paper OW not attached to new base paper NW
Is inevitably formed by a predetermined length (the separation length between the nip bar 24 and the knife 32).

When the new base paper NW is fed to the paper consumption mechanism following the old base paper OW, the attached part 42 hinders smooth feeding of the base paper, or the bonded part 42 is And cause damage to the base paper.

For example, when the spliced base paper is used as the core paper, as shown in FIG. 8 (a), the liner 1 and the old base paper OW are overlapped with the old base paper OW and the new base paper NW.
Is attached, and the new base paper NW is attached to the back liner 2. However, since the adhered portion 42 of the old base paper OW is not stuck to the new base paper NW, the liner 1 and the back liner 2 are separated and deformed at the relevant portion as shown in FIG. 8B. . As described above, the adhered portion 42 causes a reduction in the commercial value of a corrugated cardboard sheet made of base paper including a paper spliced portion. Conventionally, a worker has to search for and discard the corrugated cardboard sheet at each order change. Work was required. Further, it is pointed out that the old base paper OW is wasted by the length of the adhered portion 42 every time the splicing is performed, and the production efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in performing the splicing described above, and has been proposed to appropriately solve the problem. An object of the present invention is to provide a means that can be used as a product to improve productivity and reduce labor of workers.

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve the intended object, a paper splicing method according to the present invention comprises an old base paper fed from a base paper roll and being supplied to a paper consumption mechanism, and another base paper. When performing splicing with the new base paper that is drawn out from the roll and is on standby, the old base paper is nipped and held by a pair of idler rolls, and the old base paper is upstream from the disposition position of the idler roll in the base paper supply direction. After cutting the old base paper by a predetermined length toward the downstream side in the base paper supply direction by rotating the idler roll in a required direction, the cut end of the old base paper and the new base paper in standby It is characterized in that the tip is attached.

Further, a paper splicing apparatus according to another invention of the present application directed to solving the above-mentioned problem includes a stationary idler roll that guides a base paper fed from a base paper roll to a paper consumption mechanism, and a near-side idler roll with respect to the idler roll. A movable idler roll that can be separated and is capable of pressing the base paper between the rolls during splicing, and is disposed upstream of both rolls in the base paper supply direction to cut the old base paper being fed. A splicer having a splicing head for splicing the old base paper and the new base paper in a standby state, further comprising: a driving unit configured to rotationally drive the movable idler roll; and placing the old base paper between the two rolls. By rotating the movable idler roll in a required direction by the driving means in a state of being sandwiched, the old base paper can be pulled out from the splice head. To.

Next, a preferred embodiment of the splicing method and apparatus thereof according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory view schematically showing a main part of a splicer as an apparatus capable of suitably performing the method according to the present invention, and FIG. 2 is a perspective view schematically showing a main part of the splicer. The basic structure of the splicer is the sixth
7 and FIG. 7, it is substantially the same as the device described in the prior art, and therefore, the same members are denoted by the same reference numerals and detailed description thereof will be omitted.

(Regarding the movable idler roll) As shown in the figure, fixed idler rolls 44 are provided on the frames 18, 18 of the splicer 16 above the right splice head 20 facing the splicing position (a position close to the receiving plate 30). Are rotatably supported. A movable idler roll 46 horizontally opposed to the fixed idler roll 44 is rotatably disposed above the left splice head 20a, and the movable idler roll 46 moves toward and away from the fixed idler roll 44. It is freely configured.

(Regarding the Moving Mechanism of the Movable Idler Roll) As schematically shown in FIG. 2, a moving mechanism 48 of the movable idler roll 46 is provided inside the frame 18. This moving mechanism 48 is also provided on the other frame 18,
Since the configuration is symmetrical, only the mechanism provided on one frame 18 will be described.

As shown in FIGS. 2 and 3, a slide rail 62 is fixed inside the frame 18, and a guide groove 62a is formed horizontally in a side surface facing the inside of the rail 62. A cam follower 49 is provided at an end of the shaft 46a of the movable idler roll 46, and the cam follower 49 is slidably provided in the guide groove 62a. Also roll 46
One end of a support member 50 is pivotally supported on the shaft 46a, and a piston rod 52 of a cylinder 52 disposed and fixed to the frame 18 is attached to an end of the support member 50 which is separated from the fixed idler roll 44.
a is clevis connected. Therefore, the movable idler roll 46 urges the cylinders 52, 52 of the pair of moving mechanisms 48, 48 in the forward and reverse directions synchronously, thereby causing the guide grooves 62a, 62a to move.
Along and moves horizontally toward and away from the fixed idler roll 44. The peripheral surface of the movable idler roll 46 is covered with a cover 47 made of a rubber material.
It is configured so that the base paper sandwiched between 4,46 can be reliably fed.

(Regarding the rotation drive mechanism of the movable idler roll) As shown in FIG. 2, the shaft 46a of the movable idler roll 46 has a ratchet wheel on the opposite side of the frame 18 with the support member 50 interposed therebetween.
54 are disposed so as to be integrally rotatable. Also, a cylinder is provided on the side of the support member 50 that faces the movable idler roll 46.
The piston 56 of the cylinder 56 is fixed.
A claw 58 that engages with the ratchet wheel 54 is clevis-connected to the tip of a. That is, by urging the cylinder 56 forward and backward, the pawl 58 moves forward and backward in the tangential direction of the ratchet wheel 54.

Note that the tooth form of the ratchet wheel 54 is set so that when the pawl 58 moves forward, the teeth slide and move, and when the pawl 58 retreats, the pawl 58 engages with the teeth to rotate the ratchet wheel 54. Therefore, by repeatedly moving the pawl 58 forward and backward, the ratchet wheel 54 and the movable idler roll 46 can be rotated in one direction.
However, by moving the movable idler roll 46 close to the fixed idler roll 44 and rotating the movable idler roll 46 counterclockwise in a state where the base paper is sandwiched between the two rolls 44, 46, the base paper is rotated. Can be fed toward the downstream side in the supply direction.

(Regarding idler roll) As shown in FIG. 1, a pair of idler rolls 35, 3 are provided on the frames 18, 18 of the splicer 16 at positions spaced rightward from the fixed idler rolls 44 by a predetermined distance, as shown in FIG.
6 are horizontally arranged at predetermined intervals. Both rolls 3
5, 36 are rotatably supported with respect to the frames 18, 18, but the roll 35 disposed on the side close to the fixed idler roll 44 is close to / separated from the other roll 36. It is freely configured. Then, by urging the cylinder 60 connected to the roll 35, the roll 35 is pressed against the roll 36 so that the base paper can be immovably held between the two rolls 35, 36 (FIG. 4). (A)). This prevents the old base paper OW supplied from the storage mechanism 22 from being pulled out from the splice head 20 during the splicing, thereby preventing the splicing position from shifting. An electromagnetic brake (not shown) is provided on the idler roll 36, and is configured to be able to stop and control the roll 36 at the time of splicing.

Next, a specific example of the splicing method performed by the splicer having the configuration shown in FIG. 1 will be described with reference to the timing chart of FIG. The base paper roll 14 loaded on the right swing arm mechanism 12 of the mill roll stand 10 is supplied to a paper consumption mechanism (not shown) via the splicer 16 and the base paper roll 14 loaded on the left swing arm mechanism 12 It is assumed that the leading end of the pulled out new base paper NW is set on the left splice head 20a.

(Preparation state for splicing) In the splicing preparation state, as shown in FIG. 1, the old base paper OW is passed through the idler roll 34 of the right splice head 20 in the splicer 16 and the fixed idler roll 44 and the idler roll 35, It is supplied to the paper consumption mechanism via the storage mechanism 22 while being guided by 36. Also, a mill roll stand is attached to the nip bar 24a of the left splice head 20a.
Base paper roll loaded in swing arm mechanism 12 on left side of 10
The leading end of the base paper pulled out from 14 is suction-held with a double-sided adhesive tape adhered to a surface of the head 20 facing the nip bar 24. The knife of the cutting device 26, 26a
Both 32 and 32a are waiting at a position where there is no obstacle to the supply of the base paper.

Next, when a base paper order change command is issued, a predetermined amount of old base paper OW is stored in the storage mechanism of the splicer 16. Then, the braking means provided in the swing arm mechanism 12 operates, and the rotation of the stencil roll 14 loaded in the swing arm mechanism 12 stops. During the splicing operation, as described above, the old base paper stored in the storage mechanism 22 is used.
OW is not consumed and supply of base paper to the paper consumption mechanism is not interrupted. Further, as shown in FIG. 4 (a), the brake of the idler roll 36 is urged to stop, and the idler roll 35 is pressed against the roll 36 by the cylinder 60, and the old base paper is placed between the two rolls 35,36. OW is immovably pinched.

Further, the movable idler roll 46 is urged by the cylinders 52, 52 of the moving mechanisms 48, 48 to move toward the fixed idler roll 44, and the old base paper OW is held between the two rolls 44, 46. Further, the drag bars 28, 28a are moved toward the receiving plate 30 by the respective cylinders 38 being urged, whereby the old base paper OW is held in tension between the idler rolls 44, 46 and the drag bar 28. Is done.

(Cutting of old base paper) In the above-mentioned state, as shown in FIG. 4 (b), the knife of the cutting device 26 which faces the receiving plate 30 with the old base paper OW interposed therebetween.
32 is urged by the cylinder 40 to receive the tip of the knife 30
In the long hole 30a. The old base paper OW is as shown in the drawing,
The old base paper OW is easily cut over the entire length in the width direction because the old base paper OW is held in a tension state between the upper and lower points with the wiring position of the knife 32 interposed therebetween. At this time, the old base paper is still
OW and the new base paper NW are not stuck.

(Drawing out old paper) Next, the cylinder 56 disposed on the support member 50 is repeatedly urged in the forward and reverse directions, whereby the pawl 58 connected to the piston rod 56a of the cylinder 56 moves forward and backward, and the pawl 58 moves. The movable idler roll 46 is rotated in one direction (counterclockwise) under the action of engagement between the movable idler roll 46 and the ratchet wheel 54. As a result, the old base paper OW sandwiched between the movable idler roll 46 and the fixed idler roll 44 is pulled out from the splice head 20. Then, as shown in FIG. 4 (c), when the cut end of the old base paper OW is fed out to the portion of the new base paper NW held on the nip bar 24a to which the adhesive tape has been stuck.
Stop the cylinder 56.

The drawing length of the old base paper OW is set in advance so as to match the separation length between the nip bar 24 and the knife 32. Further, when the old base paper OW is being pulled out, the old base paper OW located on the downstream side of the fixed idler roll 44 in the base paper supply direction is movable while being sandwiched between the idler rolls 35 and 36. Old paper OW is not withdrawn more than necessary.

(Attachment of new base paper and old base paper) In this state, the nip bars 24, 24a of the respective heads 20, 20a
Is synchronously urged in the approaching direction, as shown in FIG.
As shown in (2), the cut ends of the old base paper OW are adhered to the new base paper NW by contacting the opposite ends. That is, since the cut end of the old base paper OW is completely adhered to the front end of the new base paper NW,
The old base paper OW as shown in FIG.
Does not occur. However, while the nip bars 24, 24a are separated from each other, the drag bars 28, 28a
The swing arm mechanism 12 is released from the receiving plate 30 and the braking means of the swing arm mechanism 12 is released. Also, by returning the idler roll 35 to the expected position, the new base paper NW is supplied to the paper consumption mechanism following the consumption of the remaining old base paper OW. For a predetermined time after the supply of the new base paper NW is started, the movable idler roll 46 is held in a state of being close to the fixed idler roll 44 (the two rolls 44, 46 rotate with the feeding of the base paper). Then, the bonding portion between the new base paper NW and the old base paper OW passing between the two rolls 44 and 46 is firmly bonded.

In the embodiment, the case where the splicing is performed by the order change command in a state where the base paper remains on the base paper roll of the old base paper being supplied is described, but the present invention is not limited to this. For example, when all the old base papers are pulled out from the base paper roll, the present invention can be suitably executed even when the splicing is performed by an order change command issued before the end of the old base paper passes through the splice head. .

Effects of the Invention As described above, according to the paper splicing method and the apparatus thereof according to the present invention, when performing splicing between the old base paper and the new base paper, the cut old base paper is downstream of the base paper supply direction by a predetermined length. By pulling it out to the side, it is possible to prevent the pasted portion of the old base paper from being attached to the spliced portion between the old base paper and the new base paper. Therefore, a product manufactured from the base paper including the spliced portion can be used as a normal product, and the old base paper that is wasted at every splicing can be eliminated, and the production efficiency can be improved. Along with this, it is possible to omit a complicated operation of extracting defective products by an operator, and there is an advantage that labor can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view schematically showing a main part of a splicer as an apparatus capable of suitably performing the splicing method according to the present invention,
FIG. 2 is a perspective view schematically showing a splicer moving mechanism and a pull-out mechanism shown in FIG. 1, FIG. 3 is a plan view of a portion shown in FIG. 2, and FIGS. FIG. 5 is a timing chart showing the operation of the splicer with respect to time when the splicing is performed, FIG. 5 is a timing chart of each mechanism of the splicer, and FIG. 6 is a state in which the splicer according to the prior art is disposed above a mill roll stand. Explanatory drawing indicated by the seventh
FIGS. 8A and 8B are explanatory diagrams of the operation when splicing is performed by the splicer shown in FIG. 6, and FIGS.
(B) is an explanatory view of a corrugated cardboard sheet manufactured from base paper spliced by a conventional splicer. 14 Base paper roll, 20 Splice head 44 Fixed idler roll 46 Movable idler roll 54 Claw wheel, 56 Cylinder 58 Claw, OW Old base paper NW New base paper

Claims (3)

(57) [Claims] An original paper (OW) fed from a base paper roll (14) and supplied to a paper consuming mechanism, and a new base paper (NW) drawn from another base paper roll (14) and waiting. When the splicing is performed, the old base paper (OW) is squeezed and held by a pair of idler rolls (44, 46), and the old base paper (OW) is disposed upstream of the position where the idler rolls (44, 46) are arranged in the base paper supply direction. OW) is cut, and then the idler roll (46) is driven to rotate in a required direction to draw out the old base paper (OW) by a predetermined length toward the downstream side in the base paper supply direction. A paper splicing method characterized in that the cut end of the sheet is attached to the leading end of a new sheet of paper (NW) on standby. 2. A stationary idler roll (44) for guiding a base paper fed from a base paper roll (14) to a paper consumption mechanism;
An idler roll (46) on the movable side, which is disposed so as to be able to approach and separate from the idler roll (44) and can press the base paper between the idler roll (44) and the two rolls (4
4, 46), which is disposed upstream in the base paper supply direction, cuts out the old base paper (OW) being fed, and splices the old base paper (OW) with the new base paper (NW) on standby. A splicer including a splice head (20), a driving unit (54, 56, 58) for rotating and driving the movable idler roll (46), and an old base paper (44) between the two rolls (44, 46). By rotating the movable idler roll (46) in a required direction by the driving means (54, 56, 58) while holding the OW), the old base paper (OW) can be pulled out from the splice head (20). A paper splicing device characterized by comprising. 3. A driving device comprising: a ratchet wheel (54) fixed to a shaft end of a movable idler roll (46); and a ratchet wheel (54).
Is arranged so as to be able to engage with the ratchet wheel (5) by the cylinder (56).
4) The claw (58) which moves forward and backward in the tangential direction
3. The movable idler roll (46) is rotated in one direction by a required distance under the action of engagement between the pawl (58) and the ratchet wheel (54) by moving the pawl (58) forward and backward. The splicing device as described in the above.