JPH03158348A - Paper connecting method and its device - Google Patents

Abstract

PURPOSE:To prevent the generation of a sticking part of old stencil paper at the connection between the old stencil paper and new stencil paper, and to make usable a product produced by stencil paper including the paper connection as a normal product, by drawing out cut old stencil paper to the lower stream side in the stencil paper feeding direction by a specific length, when the old stencil paper and the new stencil paper are connected. CONSTITUTION:An old stencil paper OW drawn out from a stencil paper roll (not shown in the figure) and in the feeding condition to a paper consumption medium, and a new stencil paper NW drawn out from a stencil paper roll (not shown in the figure) and in the waiting condition are connected. In this case, the old stencil paper OW is held and maintained by a pair of idler rolls 44 and 46, and the old stencil paper OW is cut with a knife 32 at the upper stream side from the arranging position of the idler rolls in the stencil paper feeding direction. Then, by driving to rotate the idler roll 46 in the specific direction, the old stencil paper OW is drawn out a specific length to the lower stream side in the stencil paper feeding direction. And after that, the cut end of the old stencil paper OW and the tip of the new stencil paper NW in the waiting condition are stuck by nip bars 24 and 24a.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention splices new base paper drawn from another base paper roll onto old base paper that is being fed and fed from a base paper roll loaded on a mill roll stand. At this time, upstream in the direction of base paper supply from the paper splicing position.

The present invention relates to a paper splicing method and an apparatus for splicing paper without extending the end portion of the old base paper that is not pasted to the new base paper.

Conventional technology A corrugated corrugated paper is given a corrugation with a required pitch, and a single-sided corrugated board sheet is manufactured by gluing or bonding the corrugated corrugated top portion to a liner.Furthermore, a single-sided corrugated board sheet is manufactured by laminating a bank liner to this single-sided corrugated sheet. Corrugated machines for manufacturing corrugated sheets are widely used. This corrugating machine uses a single facer for producing a single-sided corrugated sheet and a double facer for laminating a backliner to the obtained single-sided corrugated sheet as important devices.

Furthermore, as ancillary equipment, a base paper supply device that supplies webs such as core paper, liner, backliner, etc. (hereinafter referred to as "base paper") to the single facer or double facer is indispensable.

This base paper is loaded into a base paper supply device in the form of a roll of a predetermined diameter (hereinafter referred to as a "base paper roll") wound around a paper tube serving as a core, and the base paper is fed and fed there. In addition, a splicer is installed above the base paper supply device to automatically splice paper from the old base paper fed to the new base paper in response to order changes that occur during the operation of the corrugate machine. It is constructed so that it can be operated continuously.

The present invention relates to a method and apparatus for splicing old base paper and new base paper that are being fed out in a corrugating machine, for example, and therefore, first, the general configuration of a base paper supply device and a splicer will be explained. For convenience of explanation,
"Right side" and "left side" refer to the relationship based on the longitudinal center of the frame 18 in FIG. 6.

(About the mill roll stand) As a base paper feeding device used for corrugating machines,
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 in each swing arm mechanism 12. Then, the base paper fed out from the base paper roll 14 loaded on one swing arm mechanism 12 is supplied to a required location of a corrugating machine (not shown), and the base paper roll 14 loaded on the other swing arm mechanism 12 waits for one paper splicing. It looks like this.

[About the splicer overview]

A splicer 16 for splicing old base paper OW and new base paper NW is disposed above the mill roll stand 10 configured as described above. A pair of frames 1 arranged apart in the width direction of the base paper in this splicer 16
Between 8.18 (only one shown), a plate 30 is installed at the center position in the paper feeding direction, and this plate 30
Splice heads 20 and 20a are disposed on the left and right sides of 0 so that they can move toward and away from each other. -And,
Both splice heads 20, 20a are shown in FIG.

The receiver splices the old week paper OW and the new base paper NW with the plate 30 being placed in close proximity to each other. Also, when setting the new base paper NW on the splice head 20 (20a), (2Qa) as shown by the two-dot chain line in Figure 6,
It is configured to operate in an expanded state. Note that the splicer 16 has a built-in well-known storage mechanism 22 that stores a predetermined amount of base paper, and performs paper splicing work while consuming the base paper stored in the mechanism, reducing paper consumption. The structure is such that paper splicing can be performed without stopping the supply of base paper to the mechanism.

(Regarding the idler roll arranged in the frame) As shown in the figure, there is one sheet between the frames 18 and 18 of the splicer 16 above the splicing head 20 on the right side waiting at the splicing position (the receiver is in a position close to the plate 30). A fixed idler roll 44 is rotatably supported on. Also, on the right side of the frame 18, a pair of fixed idler rolls 35.3 are provided.
6 are arranged in parallel with a predetermined distance between them. That is, the base paper guided through an idler roll 34 (described later) disposed on the head 20 is wound around the fixed idler roll 44 and pulled out to the right of the frame 18.

After being further wound around fixed idler rolls 35 and 36,
It is supplied to the storage mechanism 22.

At a position opposite to the fixed idler roll 44 with the base paper wound therebetween, there is a parallel to the fixed idler roll 44.
A movable idler roll 46 configured to be able to move apart is rotatably disposed. When performing paper splicing, which will be described later, this movable idler roll 46 is urged by a cylinder 52 and pressed against the fixed idler roll 44, as shown in FIG. 7(a), and the base paper is held between the rain rolls 44 and 46. It functions as expected.

As a result, while one paper is being spliced, the storage mechanism 2
The old base paper OW supplied from 2 is connected to splice head 2.
This prevents the paper from being pulled out from 0 and prevents the 9 paper splicing position from shifting. Furthermore, when the paper splicing is completed and the new paper NW is supplied to the paper consumption mechanism, the pasted part of the old paper OW and the new paper NW passes between the two circumferential idler rolls 44, 46. By doing so, the adhesive portion is firmly crimped.

(About splice heads).

Each splice head 20 includes a nip bar 24, a cutting device 26. Drag par 28 and idler roll 34
The structure is symmetrical, so in FIG. 6, the splice head 20 located on the right side will be explained, and each member of the splice head 20a located on the left side will be designated by the same reference numeral with raJ attached. The explanation will be omitted.

An idler roll 34 extending in the width direction of the base paper is rotatably supported at the lower end of the splice head 20, and is unwound from the base paper roll 14 loaded on the swing arm mechanism 12 on the right side of the mill roll stand 10. After the base paper is wound around the idler roll 34, the receiver is placed on the plate 30.
The paper is passed to the right side of the fixed idler rolls 44, 35.
．． 36 and supplied to the storage mechanism 22.

Note that the base paper roll 14 of the left swing arm mechanism 12
When the base paper is fed out, the base paper is wound around the idler roll 34a of the left splice head 20a, and then the receiver passes the paper to the left side of the plate 30, and the fixed idler roll 44.35°36 is fed out. The water is supplied to the storage mechanism 22 through the storage mechanism 22.

Regarding the tongue bar) At the upper end of the splice head 20, as shown in FIG.
The receiver is provided with a nip bar 24 extending in the width direction of the base paper at a position that does not interfere with the plate 30.
4 is a cylinder (
(not shown) to move forward and backward in parallel.

Further, the nip bar 24 has a built-in vacuum suction device, for example, and is configured to be able to suction and hold the tip of the new base paper NW on the surface facing the other nip bar 24a. Note that when the old paper OW is fed out through the splice head 20 on the right, the leading edge of the new paper NW is adsorbed and held on the nip bar 24a of the splice head 20a on the left and waits for paper splicing, as described later. (See Figure 7(a)). Therefore, when changing orders, by bringing the opposing nip bars 24, 24a close together and bringing their opposing ends into contact with each other, both nip bars 24, 24a
The old base paper oW and the new base paper NW, which are passed between them, are joined together.

(Regarding the Drag Par) Above the idler roll 34, a drag par 28 facing the plate 30 is disposed and extends in the width direction of the base paper. The drag par 28 is configured such that the base paper is held between the drag par 28 and the plate 30 by energizing a cylinder 38 disposed at an end separated from the plate 30. It is. However, when joining one piece of paper,
The nip bars 24, 24a are brought close to each other.

By sandwiching the base paper between the drag bar 28 and the plate 30, the old base paper OW is moved in the vertical direction (base paper supply direction).
It is held in a tensioned state by being held between two points separated by a distance.

(About the cutting device) As shown in FIG. 7, a knife 32 constituting the cutting device 26 extends in the width direction of the base paper between the nip bar 24 and the drag par 28 in the input price head 20. The tip of the knife is directed toward the plate 30 of the receiver.

This knife 32 has a plate 3 that faces the knife 32.
A cylinder 40 is disposed at the end spaced apart from 0.

In addition, the receiver has a long hole 30a extending in the width direction of the base paper at a position facing the knife 32 of the plate 30, as shown in FIG. 7(b).
), by energizing the cylinder 40 and extending its piston rod 41, the knife 32 is inserted into the elongated hole 3.
Cutting of the base paper is carried out while facing the inside of 0a. That is, as described above, since the base paper is held under tension at the two points above and below the cutting device 26, the knife 32 can smoothly cut the base paper over its entire length in the width direction.

(Operation of the splicer according to the prior art) The splicer 16 configured as described above can load and load the right swing arm mechanism 12 of the mill roll stand 10, for example.
The original paper roll 14 loaded into the swing arm mechanism 12 on the left side is
A case in which paper splicing is performed on the new base paper NW drawn out from the paper will be explained.

As shown in FIG. 6, the old base paper OW fed out from the base paper roll 14 loaded on the right swing arm mechanism 12 is
It is wound around the idler roll 34 on the right side, and the receiver is attached to the plate 30.
The paper is passed to the right side of the fixed idler roll 44, 35.3.
6, the paper passes through the storage mechanism 22, and is supplied to a paper consumption mechanism (not shown). In addition, while the old base paper OW is being consumed, a new base paper pulled out from the base paper roll 14 loaded in the left swing arm mechanism 12 is placed on the nip bar 24a of the left splice head 20a that has moved to the end of the splicer 16. Hold the end of the NW by suction. and,
As shown in FIG. 6, this splice head 20a is placed close to the splice head 20 on the right side with the plate 30 in between, and waits for paper splicing. Note that a double-sided adhesive tape or the like is pasted in advance on the facing surface of the fresh cooling paper NW facing the opposing nip bar 24 .

Then, 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 old base paper OW passing through the splice head 2o is stopped, but at this time, the old base paper OW stored in the storage mechanism 22 is consumed, so the supply of base paper to the paper consumption mechanism is stopped. Also, the movable idler roll 46 moves close to the fixed idler roll 44, and both rolls 44°4
6. Sandwich the old original paper OW between the two.

When the old base paper OW stops running, each of the heads 20.2
As shown in FIG. 7(a), the nip bars 24.24a of 0a are synchronously biased to bring their opposing tips into contact with each other. Since the new base paper NW to which the single-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. In addition, the cylinder 38 of the drag par 28, 28a,
38a is energized, and the bars 28, 28a come into contact with the sides of the plate 3o to sandwich the old base paper OW and the new base paper NW. It is kept under tension between.

Next, as shown in FIG. 7(b), the cylinder 40 of the knife 32 facing the plate 30 and the old paper OW is energized, and the tip of the knife 32 is inserted into the long hole 30a of the plate 30. Let's face it. As described above, since the old base paper oW is held in a tensioned state, the old base paper OW is easily cut in the width direction. As a result, the nip bars 24, 24a and the drag pars 28, 28a are returned to their respective positions, and the braking means of the swing arm mechanism 12 is released.
After the remaining old base paper OW is consumed, new base paper N is
W is supplied to the paper consumption mechanism. Note that at this time, the movable idler roll 46 is still close to the fixed idler roll 44, so the bonded portions of the new base paper NW and the old base paper OW passing between both rolls 44° 46 are firmly pressed together. . Then, after a predetermined period of time, the movable idler roll 46 is separated from the fixed idler roll 44 and returns to the desired position.

Problems to be Solved by the Invention In the splicer 16 described above, while the old base paper ○W is held under tension between the nip bar 24 and the drag par 28, the knife located between the two bars 24 and 28 3
2, the old base paper OW is cut. In this case, since the old base paper OW and the new base paper NW are pasted at the location where the nip bar 24 is disposed, as shown in FIG. 7(b), on the upstream side in the base paper supply direction from the pasting position, New original paper NW
A pasted portion 42 of the old base paper OW that is not pasted is inevitably formed to a predetermined length (the distance between the tongue bar 24 and the knife 32).

This pasted part 42 is attached to the new base paper N following the old base paper OW.
When the W is fed to the paper consumption mechanism, there is a problem in that it interferes with the smooth feeding of the base paper, or that the adhered portion 42 gets caught in the machine and damages the base paper6. For example, when spliced base paper is used as core paper, as shown in Figure 8(a), liner 1 and old base paper ○W overlap at the overlapping part of old base paper oW and new base paper NW. At the same time as being pasted, a new base paper NW is attached to the back liner 2.
is pasted. However.

Since the pasted part 42 of the old base paper oW is not pasted to the new base paper NW, the liner 1 and the backliner 2 are deformed apart at that part, as shown in FIG. 8(b).
In this way, the adhered portion 42 causes a reduction in the commercial value of corrugated cardboard sheets made from base paper, including the paper splicing portions, and conventionally, the affixed portion 42 causes the trouble of having to search for and dispose of the corrugated sheet in question every time an order is changed. It required a lot of work.

Furthermore, it has been pointed out that each time paper splicing is performed, the old base paper OW is wasted by the length of the pasted portion 42, resulting in a reduction in production efficiency.

Purpose of the Invention The present invention has been proposed in order to suitably solve the above-mentioned disadvantages inherent in paper splicing, and is to In addition to improving productivity by making it usable as a product,
The purpose is to provide a means to achieve labor reduction for workers.

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve the intended purpose, a paper splicing method according to the present invention provides a method for splicing old base paper fed from a base paper roll and being supplied to a paper consumption mechanism, and another base paper. When splicing with new base paper that has been pulled out from the roll and is waiting, the old base paper is held under pressure by a pair of idler rolls, and the old base paper is spliced on the upstream side of the base paper supply direction from the position where the idler rolls are installed. After cutting, and then rotating the idler roll in a required direction, the old base paper is pulled out by a predetermined length toward the downstream side in the base paper supply direction.

The present invention is characterized in that the cut end of the old base paper and the leading edge of the new base paper that is on standby are pasted together.

Further, a paper splicing device according to another invention of the present application aimed at solving the above problem includes a fixed side idler roll that guides the base paper fed out from the base paper roll to the paper consumption mechanism, and a paper splicing device that is close to the idler roll. An idler roll on the movable side that can be moved apart and that can pinch the base paper between the rolls during paper splicing, and an idler roll on the movable side that is disposed upstream from both rolls in the paper supply direction and cuts the old base paper being fed out. The splicer also includes a splicing head for splicing the old base paper and the waiting new base paper, the splicer further comprising a drive means for rotationally driving the idler roll on the movable side.

The present invention is characterized in that the old base paper can be pulled out from the splice head by rotating the movable idler roll in a desired direction by the driving means while the old base paper is held between the two rolls.

Examples Next, regarding the paper splicing method and apparatus according to the present invention,
Preferred embodiments will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory view schematically showing the main parts of a splicer as a device that can suitably carry out the method according to the present invention, and FIG. 2 is a perspective view schematically showing the main parts of the splicer. The basic configuration of the splicer is the same as the device described in the prior art section with reference to FIGS. 6 and 7, so the same members are designated by the same reference numerals. A detailed explanation thereof will be omitted.

(Regarding the movable idler roll) As shown in the figure, the frame 18.18 of the splicer 16
A fixed idler roll 44 is rotatably supported above the splice head 20 on the right side facing the paper splicing position (the position where the receiver is close to the plate 3o). Also,
A movable idler roll 46 horizontally opposed to the fixed idler roll 44 is rotatably disposed above the left splice head 20a.

It is configured to be movable toward and away from the fixed idler roll 44.

(About the movement mechanism of the movable idler roll) Frame 1
A moving mechanism 48 for a movable idler roll 46 is disposed inside the roller 8, as schematically shown in FIG. This moving mechanism 48 is also disposed on the other frame 18, and its configuration is symmetrical, so only the mechanism disposed on one frame 18 will be described.

As shown in FIGS. 2 and 3, a slide rail 62 is identified inside the frame 18.

A guide groove 62a is horizontally bored in the side surface of the rail 62 facing inward. The movable idler roll 46
A cam follower 49 is disposed at the end of the shaft 46a, and the cam follower 49 is slidably disposed in the guide groove 62a. Further, one end of a support member 5o is pivotally supported on the shaft 46a of the roll 46, and a piston rod 52a of a cylinder 52 fixed to the frame 18 is attached to the end of the support member 50 separated from the fixed idler roll 44 through a clevis. It is connected. Therefore, the pair of moving mechanisms 48
．． By synchronously biasing the cylinders 52 and 52 of 48 forward and reverse, the movable idler roll 46 moves into the guide groove 6.
2a, 62a, the movable idler roll 46 horizontally moves towards 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 rubber material, and as will be described later, the movable idler roll 46 moves horizontally towards and away from the fixed idler roll 44. The structure is such that the base paper sandwiched between them can be reliably fed out.

(Regarding the rotating part tII mechanism of the movable idler roll) As shown in FIG. It is set up. Further, a cylinder 56 is arranged and fixed on the side surface of the supporting member 50 facing the movable idler roll 46, and a claw 58 that engages with the eight rods 54 is connected to the tip of a piston rod 56a of the cylinder 56 with a clevis. That is, by biasing the cylinder 56 in the forward and reverse directions, the claws 58 move forward and backward in the tangential direction of the eight claws 54.

The eight tooth patterns 54 are set so that when the pawls 58 move forward, they slide over the teeth, and when the pawls 58 move backward, the pawls 58 engage with the teeth and rotate the eight teeth 54. Therefore,
By repeatedly moving the claws 58 forward and backward, the eight claws 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, both rolls 44.4
With the base paper sandwiched between the movable idler rolls 4 and 6,
By rotating the feeder 6 counterclockwise, the base paper can be fed out toward the downstream side in the feeding direction.

(About idler roll) In frame 18, 18 of splicer 16.

As shown in FIG. 1, a pair of idler rolls 35 and 36 are horizontally arranged at a predetermined distance apart from the fixed idler roll 44 at a predetermined distance to the right. 36.36 are all frame 18.1
Although the roll 35 is rotatably supported with respect to the roller 8, (!
It is configured to be able to approach and move away from the other roll 36. Then, by energizing the cylinder 6o connected to the roll 35, the roll 35 is pressed against the roll 36,
It is constructed so that the base paper can be immovably held between both rolls 35 and 36 (see FIG. 4(a)). This results in
During splicing, it is possible to prevent the old base paper oW supplied from the storage mechanism 22 from being pulled out from the splice head 20, thereby preventing the splicing position from shifting. The idler roll 36 is provided with an electromagnetic brake (not shown), and is configured to be able to control the roll 36 to stop during paper splicing.

Operation of the Embodiment Next, a specific example of the paper splicing method carried out by the splicer having the configuration shown in FIG. 1 will be described with reference to the timing chart shown in FIG. Note that 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 is supplied to the paper consumption mechanism (not shown) via the splicer 16. New original paper N pulled out from
It is assumed that the tip of W is set in the left splice head 20a.

(Preparation state for paper splicing) In the paper splicing preparation state, as shown in FIG. .36 and is supplied to the paper consumption mechanism via the storage mechanism 22. Further, the leading edge of the base paper pulled out from the base paper roll 14 loaded on the left swing arm mechanism 12 of the mill roll stand 1o is pasted on both sides of the nipper 24a of the left splice head 20a on the surface facing the nipper 24 of the opposing head 20. It is held by suction with adhesive tape attached. In addition, the knives 32, 32 of the cutting device 26.26a
All of the machines a are waiting at positions that do not interfere with the supply of 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 166.Then, the braking means disposed in the swing arm mechanism 12 is activated, and the swing arm The rotation of the base paper roll 14 loaded in the mechanism 12 is stopped. In addition, during the paper splicing work.

As mentioned above, the old M paper O stored in the storage mechanism 22
The supply of base paper to the paper consumption mechanism will not be interrupted due to consumption of W. In addition, as shown in FIG. is pressed against the roll 36 by the cylinder 60, and the old base paper OW is immovably sandwiched between the rolls 35 and 36.

Furthermore, two movable idler rolls 46 are connected to the moving mechanism 48.48.
The old base paper OW is moved toward the fixed idler roll 44 by the cylinders 52.52 of
Clamp with 6. Further, each cylinder 38 of the drag par 28.28a is energized and the receiver moves toward the plate 30, whereby the old paper oW is moved to the idler roll 44.46.
and the drag par 28 in a tensioned state.

(Cutting the old base paper) In the above-mentioned state, as shown in FIG. 4(b), the receiver is the cutting device facing the plate 30 and the old base paper OW! 26 knives 32 are biased by the cylinder 40 so that the tip of the knife faces into the elongated hole 30a of the receiver plate 30. As shown in the drawing, the old base paper OW is held under tension between two points above and below, sandwiching the position of the knife 32, so that the old base paper OW
can be easily cut over the entire length in the width direction. Note that at this time, the old base paper OW and the new base paper NW have not yet been pasted.

(Removal of old paper) Next, by repeatedly urging the cylinder 56 disposed on the support member 50 in forward and reverse directions, the claw 58 connected to the piston rod 56a of the cylinder 56 moves forward and backward, and the claw 58 The movable idler roll 46 is rotated in one direction (counterclockwise) under the action of engagement with the pawl 54. As a result, the movable idler roll 46 and the fixed idler roll 4
The old base paper OW held between the splicing head 4 and the splicing head 20 is pulled out from the splicing head 20. Then, the cut end of the old base paper ○W is attached to the nip bar 24 as shown in Fig. 4 (Q).
The cylinder 56 is stopped when the new base paper NW held at point a is fed out to the part to which the adhesive tape is attached.

Note that the length of the old base paper ○W to be pulled out is set in advance to match the distance 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 transferred to the idler roll 35.
36 so that it can be moved, so the old original paper O
W will not be drawn out more than necessary.

(Attaching new base paper and old base paper) In this state, the nip bar 2 of each head 20, 20a
4 and 24a are synchronously biased in the direction toward each other, their opposing tips come into contact and the cut end of the old base paper OW is stuck to the new base paper NW, as shown in FIG. 4(d). Ru. In other words, the cut end of the old paper oW is completely attached to the leading edge of the new paper NW.

The old base paper O as shown in Fig. 7(b) is placed on the upstream side of the pasting part.
However, by separating both the nip bars 24, 24a, and separating the drag bars 28, 28a from the plate 30, the braking means of the swing arm mechanism 12 is removed. unlock. Further, by returning the idler roll 35 to the intended position, the remaining old base paper OW is consumed and the new base paper NW is
is supplied to the paper consumption mechanism. Note that the movable idler roll 46 is held close to the fixed idler roll 44 for a predetermined period of time after the supply of new base paper NW is started (both rolls 44 and 46 rotate as the base paper is fed out). The sticking portion of the new base paper NW and the old base paper OW passing between the two rolls 44 and 46 is firmly pasted.

In the embodiment, a case has been described in which paper splicing is performed in response to an order change command while the base paper remains on the base paper roll of the old base paper being supplied.

The invention is not limited to this, for example.

This can also be suitably carried out when splicing is performed by an order change command issued before the end of the old base paper passes the splice head when all the old base paper has been pulled out from the base paper roll.

Effects of the Invention As explained above, according to the paper splicing method and device according to the present invention, when splicing old base paper and new base paper, cut old base paper is cut by a predetermined length downstream in the base paper supply direction. By pulling it out to the side, it is possible to prevent the pasted part of the old base paper from forming at the paper splicing part between the old base paper and the new base paper.

Therefore, it is possible to use a product manufactured using base paper including a splicing portion as a normal product, and to eliminate old base paper that is wasted after each splicing process, thereby improving production efficiency. In addition, there is an advantage that the complicated work of extracting defective products by an operator can be omitted, and labor can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing the main parts of a splicer as a device that can suitably carry out the paper splicing method according to the present invention;
Fig. 2 is a perspective view schematically showing the moving mechanism and pull-out mechanism of the splicer shown in Fig. 1, Fig. 3 is a plan view of the part shown in Fig. 2, and Figs. 4(a) to (d) are Splicer
Fig. 5 is a timing chart of each mechanical part of the splicer, and Fig. 6 shows a splicer according to the prior art arranged above a mill roll stand. Explanatory diagram showing the installed state, No. 7
Figures (a) and (b) are explanatory diagrams of the operation when paper splicing is performed by the splicer shown in Figure 6. Figures 8 (a) and (
b) is an explanatory view of a corrugated board 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... Nail leather 56... Cylinder 58...
・Claw ○W...Old base paper NW...New base paper FIo, 7 (al FIG, 7 (b)

Claims (1)

[Scope of Claims] [1] Old base paper (OW) being fed from a base paper roll (14) and being supplied to the paper consumption mechanism, and new base paper (NW) being pulled out from another base paper roll (14) and waiting. ), the old base paper (OW) is passed through a pair of idler rolls (44, 4
6), and cut the old base paper (OW) on the upstream side in the base paper supply direction from the position where the idler rolls (44, 46) are installed, and then drive the idler rolls (46) to rotate in the required direction. By doing this, after pulling out the old base paper (OW) by a predetermined length toward the downstream side in the base paper supply direction, the cut end of the old base paper (OW) and the leading edge of the waiting new base paper (NW) are pasted. A method of joining paper that is characterized by the fact that it is made to fit together. [2] A fixed side idler roll (44) that guides the base paper fed out from the base paper roll (14) to the paper consumption mechanism, and an idler roll (44) on the fixed side that guides the base paper fed out from the base paper roll (14), and a roller that is disposed so as to be able to approach and move away from the idler roll (44), and is used for paper splicing. a movable idler roll (46) capable of pinching the base paper between it and the roll (44); and a movable idler roll (46) disposed upstream of both rolls (44, 46) in the base paper supply direction;
A splicer comprising a splice head (20) that cuts the old base paper (OW) being fed out and splices the old base paper (OW) with the new base paper (NW) that is waiting, the idler on the movable side; The drive means (54, 56, 58) rotationally drives the roll (46), and the drive means (54, 56, By rotating the movable idler roll (46) in a required direction by the splicing head (58), the old original paper (OW)
20) A paper splicing device characterized in that it is configured to be pulled out from the paper splicing device. [3] The driving means is a movable idler roll (46
) A ratchet wheel (54) fixed to the shaft end of the ratchet wheel (54)
The cylinder (56) engages with the ratchet wheel (
The claw (58) is moved forward and backward in the tangential direction of the claw (54).
3. The paper splicing device according to claim 2, wherein the idler roll (46) on the movable side is rotated in one direction by a predetermined distance under the action of engagement between the idler roll (46) and the ratchet wheel (54).