JP2001328187A - Apparatus and method for manufacturing single-faced corrugated fiberboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute stable pasting corresponding to various conditions of production of a single-faced corrugated fiberboard and also to reduce noise, vibration and a press mark in pasting. SOLUTION: An apparatus for manufacturing the single-faced corrugated fiberboard manufactures the corrugated fiberboard 9 by pasting flute top parts of a taken-up corrugating medium 6 and by pressing a liner 5 on the parts to be pasted therewith. The apparatus is equipped with a pasting roll 12 which has a fluted part formed on the outer peripheral surface and carries the corrugating medium, holding it with the fluted part, and with a first guide roll 14 and a second guide roll 15 which are so provided as to hold the pasting roll 12 between. The first guide roll 14 is disposed on the upstream side in the direction of carrying the liner in relation to the pasting roll 12 so as to guide running of the liner 5 so that the liner winds around the outer periphery of the pasting roll 12, while the second guide roll 15 is disposed on the downstream side in the direction of carrying the liner in relation to the roll. The first guide roll 14 is constituted movably so that the length of contact of the liner 5 with the outer periphery of the pasting roll 12 can be changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-sided cardboard manufacturing apparatus and a single-sided cardboard manufacturing method for continuously manufacturing a single-sided cardboard by laminating a core paper and a liner.

[0002]

2. Description of the Related Art FIG. 6 shows a typical configuration of a conventional single-faced cardboard manufacturing apparatus (single facer). As shown in FIG. 6 (a), the conventional single-faced corrugated cardboard manufacturing apparatus includes an upper roll 1 and a lower roll 2 each having a corrugated surface (corrugated step) formed on a circumferential surface. Are rotatably arranged in a vertical relationship at positions facing each other across the core paper 4 so as to mesh with each other. A pressure roll 3 is provided on the outer peripheral surface of the lower roll 2.
However, at a position downstream of the upper roll 1 of the conveying line for the core paper 4, a suitable nip pressure is applied to the top of the lower roll 2 so as to come into contact with the top of the lower roll 2.

The upper roll 1 and the lower roll 2 are shown in FIG.
As shown in (b), the core paper 4 is fed into and passed through the meshing portion between the rolls 1 and 2, so that the core paper 4 is corrugated (stepped) to form the corrugated core paper 6. Things. At this time, a suction force generated by an air suction device (not shown) acts on the corrugated core paper 6 through the horizontal holes 10 and the circumferential slit grooves 11 provided in the lower roll 2, and the corrugated core paper 6 is transferred to the lower roll 2. To be in close contact with the step surface.

[0004] While the corrugated core paper 6 is transported to the joint with the pressure roll 3 in a state in which the corrugated core paper 6 is in close contact with the step surface of the lower roll 2, the corrugated core paper 6 is glued by the gluing roll 7 of the gluing device 20. Glue 8 is applied to the top. After the glue 8 is applied, the liner 5 guided from the other direction by the pressure roll 3 is pressed (attached) to the corrugated core paper 6 while being heated by the heating device at the joint with the pressure roll 3. The single-sided cardboard 9 is manufactured by laminating the core paper 6 and the liner 5.

[0005] The formed single-sided cardboard 9 is sent to the next step.

[0006]

By the way, in the conventional single-sided corrugated cardboard manufacturing having the above-described structure, the presence of the pressure roll 3 is indispensable as a means for securely bonding the corrugated core paper 6 and the liner 5. . This pressure roll 3
Is constantly pressed against the lower roll 2 at a required pressure, whereby a nip pressure is applied to the corrugated core paper 6 and the liner 5 passing between the two rolls 2 and 3. However, since both the rolls 2 and 3 are made of a hard metal material, an impact (a hammer phenomenon) is given periodically when the crest of the lower roll 2 comes into contact with the surface of the pressure roll 3.

For this reason, a line-shaped pressing strip (press mark) is formed on the liner surface of the manufactured single-sided corrugated cardboard 9 at the pitch of the crest of the lower roll 2 in the lateral direction. There is a problem that the liner surface with such a press mark is not suitable for printing in a subsequent process. Further, at the time of pressurization, since the two rolls 2 and 3 come into contact with each other only one step, there is a problem that the bonding time is extremely short, and the paper is likely to be broken due to insufficient bonding force or excessive pressure.

Particularly at high speed operation, there is a problem that noise and vibration are generated due to slip and pressure at a bonding portion, and a larger press mark is generated, thereby producing a single-sided cardboard 9 with poor accuracy. In order to solve the above-mentioned problems, it is only necessary to reduce the pressing force of the bonding portion and to increase the bonding time at a low pressure so that the bonding is performed. A device has been proposed. Hereinafter, a representative device proposed conventionally as a means for solving the above-mentioned problem will be described.

For example, Japanese Patent Application Laid-Open No. 9-57879 discloses that
There has been disclosed a single-sided corrugated cardboard manufacturing apparatus which aims at suppressing the generation of a press mark by reducing the pressing force (pressing force) by a press roll. This device has an upper roll and a lower roll that mesh with each other,
Outside the lower roll, a press roll for supplying a liner to the top of the step coated with the size liquid by the gluing device is provided, and a lower roll is provided between a forming section by both rolls and a press section by the press roll. The suction force of the suction device on the side causes the corrugated paperboard to be attracted to the lower roll side, and a guide roll for guiding single-sided cardboard is provided above the lower roll, and the guide by the guide roll and the suction residual pressure of the suction device Thus, the single-sided corrugated cardboard is configured to be pressed against the lower-stage roll at the portion from the press roll to the guide roll.

As a result, the core paper (corrugated paperboard) moving from the forming section to the pressurizing section is adsorbed and moved by the lower roll in the suction zone, does not float, and is sufficiently heated by the heat of the lower roll. The size liquid is gelled. Moreover, the gelling of the size liquid is promoted by the heating effect applied to the position of the guide roll, so that the bonding (bonding) between the core paper and the liner can be performed even if the pressing force (pressing force) by the press roll is low. It can be performed sufficiently firmly and can suppress the generation of press marks due to the pressing force of the press roll.

[0011] A technique for making the bonded core paper and the liner long contact the outer periphery of the step roll by a guide roll or a press roll is disclosed in JP-A-9-164614, JP-A-6-67020 and JP-A-6-67020. JP-A-10-193482, JP-A-6-286032, JP-A-8-51
No. 2261 is also described. Among these, Japanese Patent Application Publication No. Hei 8-512261 discloses a technique for positively applying an appropriate tension to the joined liner and core paper.

[0012] As described above, by bringing the core paper and the liner that have been joined into contact with the outer periphery of the step roll by the guide roll or the like for a long time, the pressure applied by the press roll can be reduced, and the generation of press marks can be reduced. Depending on the production conditions of single-sided cardboard, that is, the speed of the production line and the materials of the core paper and the liner, the appropriate value of the contact length of the core paper and the liner to the outer periphery of the corrugated roll is effective for suppressing this. Are different. Of course, the appropriate value of the contact length differs depending on the tension applied to the liner or the like.

Japanese Patent Application Laid-Open No. Hei 9-57879 describes that the vertical position of the guide roll is adjusted (approaching / separating) depending on the state of lamination between the core paper and the liner. It is not specified what the approach / separation movement is for. As described above, various devices have been proposed to solve noise, vibration, press marks, and the like, which are problems of the conventional single-sided cardboard manufacturing apparatus, but all of these problems correspond to various production conditions of the single-sided cardboard. Has not yet been solved, and there are still issues to be solved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is intended for bonding a corrugated paper core to a liner.
A single-sided corrugated cardboard manufacturing apparatus and a single-sided corrugated cardboard capable of stably bonding together in accordance with various production conditions of the single-sided corrugated cardboard, and suppressing noise, vibration, and press marks during bonding. It is intended to provide a manufacturing method.

[0015]

In order to achieve the above object, a single-faced corrugated cardboard manufacturing apparatus according to the present invention according to claim 1 is provided.
In a single-sided corrugated cardboard manufacturing apparatus for manufacturing a single-sided corrugated cardboard by gluing the corrugated top of the corrugated core paper and pressing and bonding a liner on the glued corrugated top,
A laminating roll having a corrugated step formed on the outer peripheral surface thereof and transporting the core paper while being held by the corrugated step, and a laminating roll disposed around the laminating roll, wherein the liner is wound around the laminating roll; A pair of guide rolls for guiding the movement of the liner so as to be attached, a first guide roll disposed upstream of the laminating roll in the liner transport direction, and a downstream of the laminating roll in the liner transport direction. And a second guide roll arranged on the side, wherein the first guide roll is configured to be movable so as to change a contact length of the liner to an outer periphery of the bonding roll. And

Further, it is preferable that the first guide roll is configured to be movable in the circumferential direction of the bonding roll.
Further, the first guide roll may be configured to be separated from the laminating roll, and the first guide roll may be configured to be in contact with the laminating roll and through the core paper. May be. Further, it is preferable that the second guide roll is configured to be movable so that the length of contact of the liner with the outer periphery of the bonding roll can be changed. Further, the second guide roll may be configured to be separated from the bonding roll, and the second guide roll may be configured to be in contact with the bonding roll and through the core paper. May be.

It is preferable that a heating means for heating the first guide roll and a heating means for heating the second guide roll are provided. Further, it is preferable that a tension adjusting mechanism for varying the tension of the liner by the first guide roll and a tension adjusting mechanism for varying the tension of the liner by the second guide roll are provided.

In this case, the tension adjusting mechanism may be configured to adjust the tension of the liner by changing the suction force for sucking the liner to the outer periphery of the first guide roll or the second guide roll. Alternatively, the rotation speed of the first guide roll or the second guide roll is changed to adjust the tension of the liner, or the transfer torque of the liner of the first guide roll or the second guide roll is reduced. It is preferable that the tension of the liner is adjusted by changing the tension.

The change of the contact length of the liner to the outer periphery of the laminating roll due to the movement of the first guide roll or the second guide roll is preferably performed in accordance with the production condition of single-sided corrugated cardboard, The first guide roll or the second guide roll
It is preferable that the change of the speed by the speed variable mechanism on the guide roll is also performed according to the production condition of the single-sided cardboard.

In addition, a pressure roll formed of an elastically deformable material is provided between the first guide roll and the second guide roll to press the liner toward the bonding roll. Is preferred. The method for producing a single-faced corrugated cardboard according to the present invention includes a first step of stepping the core paper, a second step of gluing the top of the stepped core paper, and a step of gluing the core paper. The third step of transporting while holding by a laminating roll having a corrugated step formed on the outer peripheral surface, and the liner transported toward the laminating roll is located upstream of the laminating roll in the liner transport direction. The first guide roll and the second guide roll disposed downstream of the laminating roll in the liner transport direction relative to the laminating roll apply and press the core paper to the core paper while being wound around the laminating roll. And a fourth step. In the fourth step,
The method is characterized in that the first guide roll is moved in accordance with the production condition of single-sided corrugated cardboard, and the length of contact of the liner with the outer periphery of the bonding roll is set in advance.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a single-sided cardboard manufacturing apparatus according to a first embodiment of the present invention. Hereinafter, the configuration of the single-sided cardboard manufacturing apparatus of the present embodiment will be described with reference to FIG. In FIG. 1, the same parts as those of the conventional single-sided corrugated cardboard manufacturing apparatus described above are denoted by the same reference numerals.

As shown in FIG. 1, an upper roll (bonding roll) 12 having a corrugated step formed on the outer peripheral surface, and a lower roll (stepping roll) 13 also having a corrugated step formed on the outer peripheral surface.
Are rotatably supported by a frame (not shown).
Here, the upper roll 12 is disposed directly above the lower roll 13, and the respective corrugated steps mesh with each other via the core paper 4.

The core paper 4 is supplied from a core paper supply device (not shown) to a meshing portion between the upper roll 12 and the lower roll 13.
In this meshing portion, step rolling is performed to form the corrugated core paper 6. Then, the formed corrugated core paper 6 is glued onto the top of the step by the gluing roll 7 of the gluing device 20 provided diagonally below the upper roll 12.
After being glued, the paper is conveyed toward the bonding portion with the upper liner 5 while being held by the corrugated step formed on the outer peripheral surface of the upper roll 12. .

A plurality of lateral holes 10 are provided on the side of the upper roll 12, and a plurality of circumferential slit grooves 11 extending in the axial direction are provided on the outer periphery of the upper roll 12. Then, the suction force generated by the air suction device (not shown) is applied to the corrugated core paper 6 via the lateral holes 10 and the circumferential slit grooves 11 provided in the upper roll 12 as described above, and The upper roll 12 is brought into close contact with the step surface.

The liner 5 is supplied from the upper left side to the right side of the upper roll 12 in FIG.
And the left side of the upper roll 12, that is, the upper roll 1
The first guide roll 14 is located on the upstream side in the liner transport direction from the upper roll 2, that is, on the upstream side of the upper roll 12.
The second guide rolls 15 are provided on the downstream side in the liner transport direction from the second guide rolls 2, respectively.

These first and second guide rolls 14 and 15
Is for guiding the traveling of the liner 5 so that the liner 5 is wound around the outer periphery of the upper roll 12 with a sufficient contact length. That is, the pair of first and second guide rolls 14 and 15 are disposed with the upper roll 12 interposed therebetween.
It is guided by these first and second guide rolls 14 and 15, and comes into contact with the outer periphery of the upper roll 12 with a circumferential length corresponding to the positions of these first and second guide rolls 14 and 15.

The upper roll 12, the first guide roll 14, and the second guide roll 15 are all provided with a heating device (not shown) on the surface. This heating device introduces a heat medium fluid (for example, a high-temperature gas such as high-temperature steam or a high-temperature liquid such as high-temperature oil) from the outside into the rolls 12, 14, and 15, and transfers the heat medium fluid to the upper roll 12 and the guide. A known technique such as heating the surfaces of the rolls 12, 14, and 15 by flowing them through a heat medium flow path (not shown) provided in the rolls 14 and 15 may be used. The liner 5 and the corrugated core paper 6 are heated by these heating devices to promote the gelling of the glue 8 and the liner 5 and the corrugated core paper 6
It facilitates the bonding with.

In the present embodiment, the first guide roll 14 is configured to be able to move its axial center position so that the length of contact with the outer periphery of the upper roll 12 of the liner 5 can be changed, and the second guide roll 15 Is fixed in its position. In the present embodiment, the first guide roll 14 is separated from the outer periphery of the upper roll 12. That is, as shown by the arrow in FIG.
In a state separated from the outer circumference of the upper roll 12, the first guide roll position moving mechanism (not shown) drives the first guide roll position moving mechanism to move the axial position along the outer circumference of the upper roll 12 (while maintaining a state equidistant from the axis of the upper roll 12). It is designed to be translated.

The first guide roll position moving mechanism includes:
The operation is controlled by a controller (not shown). The controller controls the first guide roll in accordance with the production conditions of the single-sided corrugated cardboard, that is, the speed of the production line, the material of the corrugated core paper 6, the material of the liner 5, and the like. The position of the first guide roll 14 is adjusted through the position moving mechanism, and the winding angle (winding angle) around the outer periphery of the upper roll 12 of the liner 5 is adjusted.
α1 is controlled. That is, in the controller, when it is desired to further promote gelation of the glue (glue liquid) 8 for gluing the liner 5 and the corrugated core paper 6, the liner 5 and the corrugated core paper 6 with the glue 8 interposed therebetween are used. If it is desired to heat the liner 5 and the corrugated core paper 6 to the extent that the glue 8 is sufficiently gelled, the winding angle α1 is increased. Decrease.

For example, the controller controls the first guide roll 14 so as to increase the winding angle α1 around the outer periphery of the upper roll 12 of the liner 5 when the speed of the production line increases.
Adjust the position of. This is because if the winding angle α1 is constant,
As the speed of the production line increases, the contact time of the liner 5 with the outer periphery of the upper roll 12 decreases, and the upper roll 12
Liner 5 is likely to be insufficiently heated by heat from
Since the size liquid for gluing the liner 5 and the corrugated core paper 6 is less likely to gel, the winding angle α1 is increased to secure a contact time with the outer periphery of the upper roll 12 of the liner 5. Conversely, when the speed of the production line decreases, the controller determines that the winding angle α1 around the outer roll
The position of the first guide roll 14 is adjusted so as to reduce. This is because, when the winding angle α1 is constant, the lower the speed of the production line, the longer the contact time of the liner 5 with the outer periphery of the upper roll 12, and the heat from the upper roll 12 causes excessive heating of the liner 5. This is because there is a risk of adversely affecting the quality of single-sided cardboard.

The liner 5 and the corrugated core paper 6 wound around the outer periphery of the upper roll 12 are not only supplied with heat from the upper roll 12 but also the liner 5 and the corrugated core paper 6 are pressed against the upper roll 12. As a result, the liner 5 and the corrugated core paper 6 are placed under pressure contact with each other. The liner 5 and the corrugated core paper 6 (single-stage roll 9) are kept in pressure contact with each other even when they are wound around the outer circumference of the second guide roll 15, but they are mainly pressed and heated for bonding. Is an upper roll 12 near the gluing roll 7.

Therefore, in the controller, if the liner 5 and the corrugated core paper 6 are made of thick paper and it is desired to make the liner 5 and the corrugated core paper more firmly bonded (glued), the heating is simply promoted. Not only for this purpose, but also for increasing the pressing time, the position of the first guide roll 14 is adjusted so as to increase the winding angle α1. If the gluing is to be performed more firmly, the amount of the glue 8 to be supplied between the liner 5 and the corrugated core paper 6 may be increased. It can be gelled, and this is also effective for stronger gluing.
Of course, when the liner 5 and the corrugated core paper 6 are thin papers and the liner 5 and the corrugated core paper 6 do not need to be bonded (glued) so strongly, the winding angle The position of the first guide roll 14 is adjusted so as to reduce α1.

Each of the first guide roll 14 and the second guide roll 15 has an adsorbing mechanism (not shown) for adsorbing the liner 5 on its peripheral surface using an air suction device or the like, similarly to the upper roll 12. Is provided. In particular, in the present embodiment, the suction force of the liner 5 by the first guide roll 14 and the suction force of the liner 5 by the second guide roll 15 can be individually adjusted. As described above, when the suction force of each of the guide rolls 14 and 15 is adjusted,
Since the tension state of the liner 5 can be adjusted, the mechanism for adjusting the suction force functions as a tension adjustment mechanism. That is, if the suction force of the liner 5 is weakened, the liner 5 can slightly slide between the first guide roll 14 and the second guide roll 15. Can be adjusted, and the state of the liner 5 and the corrugated core paper 6 pressed against the upper roll 12 can be adjusted.

That is, for example, if the suction force of the first guide roll 14 is reduced, the first guide roll 14 and the upper roll 12
(The decrease in the tension of the liner 5 also extends between the upper roll 12 and the second guide roll 15). Conversely, if the suction force of the first guide roll 14 is increased, the tension of the liner 5 is increased mainly between the first guide roll 14 and the upper roll 12 (the tension of the liner 5 is increased by the upper roll 12 and the second roll 12). It also extends between the guide roll 15). The tension of the liner 5 can be similarly adjusted by controlling the suction force of the second guide roll 15.

In the case of the present embodiment, the first guide roll 14 and the second guide roll 15 can be rotated at a slightly different peripheral speed from the upper roll 12. For example, the first guide roll 14 and the second guide roll 15 are configured to be rotationally driven by independent motors (for example, electric motors). When increasing the tension of the liner 5, the first guide roll 1
4. In addition to increasing the suction force of the second guide roll 15, the peripheral speed is slightly reduced in the case of the first guide roll 14, and the peripheral speed is slightly increased in the case of the second guide roll 15. I have. Conversely, when reducing the tension of the liner 5, the suction force of the first guide roll 14 and the second guide roll 15 is reduced, and in the case of the first guide roll 14, the peripheral speed is slightly increased. In the case of the second guide roll 15, the peripheral speed is slightly reduced. Thereby, the tension of the liner 5 can be more reliably adjusted.

Since the single-sided corrugated cardboard manufacturing apparatus according to the first embodiment of the present invention is configured as described above, the single-sided corrugated cardboard is manufactured by the method described below. In advance,
Through the first guide roll position moving mechanism, the position of the first guide roll 14 is adjusted according to the production conditions of the single-sided corrugated cardboard, that is, the speed of the production line, the material of the corrugated core paper 6, and the material of the liner 5, and the like. The winding angle α1 of the upper roll 12 around the outer circumference of the roll 5 is adjusted. Also, the first guide roll 1
4, the setting of the suction force of the second guide roll 15 and the setting of the peripheral speed of the first guide roll 14 and the second guide roll 15 allow the production conditions of the single-sided corrugated cardboard, that is, the speed of the production line and the corrugated paper 6, The tension of the liner 5 is set to a required state according to the material of the liner 5 and the like.

Then, first, the core paper 4 is supplied from a core paper supply device (not shown) to a meshing portion between the upper roll 12 and the lower roll 13. Then, the corrugated paper 6 is formed by stepping the corrugated paper 4 at the meshing portion between the upper roll 12 and the lower roll 13 (first step). Next, the formed corrugated core paper 6
Is glued by the gluing roll 7 of the gluing device 20 (second step).

Then, the glued corrugated paper 6 is conveyed upward while being held by the corrugated step formed on the outer peripheral surface of the upper roll 12 (third step). The liner 5 is supplied to the upper roll 12 in parallel with each of the above steps. At the time of this supply, the liner 5 conveyed toward the upper roll 12 is bonded to the corrugated core paper 6 while being wound around the outer periphery of the upper roll 12 under the guidance of the first guide roll 14 and the second guide roll 15 ( The above is the fourth step). The formed single-faced cardboard 9 is sent to the next step.

As described above, according to the single-sided corrugated cardboard manufacturing apparatus of this embodiment, the first and second guide rolls 14 and 15 guide the corrugated core paper 6 while being wound around the outer periphery of the upper roll 12. Thereby, the laminating pressure between the liner 5 and the corrugated core paper 6 is sufficiently performed for a required time, and the heat from the upper roll 12 can be sufficiently supplied to the liner 5, and the gelation of the paste 8 can be promoted. Since the bonding time (pressing time) between the liner 5 and the corrugated core paper 6 can be sufficiently taken, the pressing force at the bonding portion between the corrugated core paper 6 and the liner 5 is reduced, and the paper is broken due to insufficient adhesive strength or excessive pressure. In addition, it is possible to achieve stable bonding by reducing the vibration and noise generated at the bonding portion, and also to prevent the occurrence of press marks generated on the liner 5 side of the single-faced cardboard 9. That.

Further, the position of the first guide roll 14 is adjusted according to the production conditions of the single-sided corrugated cardboard, that is, the speed of the production line, the material of the corrugated core paper 6 and the material of the liner 5, and the like. 12, the winding angle α1 to the outer circumference is adjusted,
Since the setting of the suction force of the first guide roll 14 and the second guide roll 15 and the setting of the peripheral speed of the first guide roll 14 and the second guide roll 15 are performed, the state that is most suitable for the production condition of the single-sided corrugated board is performed. It is possible to produce single-sided cardboard, which is more effective in improving productivity and quality of single-sided cardboard.

In particular, the winding angle α1 is changed by adjusting the position of the first guide roll 14 disposed upstream of the upper roll 12 in the liner transport direction.
The position of the second guide roll 15 disposed downstream of the upper roll 12 in the liner transport direction is changed to the first guide roll 1
4 so that both guide rolls 1 can be adjusted.
The winding angle α <b> 1 may be changed according to 4, 15.

However, when the winding angle α1 is changed by the first guide roll 14, the position where the corrugated core paper 6 and the liner 5 immediately after the glue 8 is supplied starts to wind around the upper roll 12 is adjusted. . Therefore, the adjustment of the position of the first guide roll 14 is not limited to the change of the winding angle α1, but also, for example, from the gluing position by the gluing roll 7 to the winding start position of the corrugated core paper 6 and the liner 5 around the upper roll 12. The influence on the joining between the corrugated core paper 6 and the liner 5, such as a change in the distance, is large, and various device states can be set appropriately in accordance with the production conditions for single-sided cardboard.

That is, by moving the first guide roll 14, the length of contact of the liner with the outer periphery of the laminating roll is increased or decreased according to the type of paper and the machine speed, so that the amount of heat given to the liner before laminating is reduced. It is possible to adjust and secure a stable laminating performance. By moving the second guide roll 15, the length of contact of the liner with the outer periphery of the laminating roll can be increased or decreased according to the paper type and the machine speed. Thus, the amount of heat applied to the single-sided cardboard in the initial bonding state can be adjusted to ensure a stable bonding force.

When the first guide roll 14 and the second guide roll 15 are moved, not only the winding angle α1 of the corrugated core paper 6 and the liner 5 around the upper roll 12 but also the first guide roll 14 and the second Winding angle α2, α around guide roll 15
3, the position of the first guide roll 14 and the second guide roll 15 is preferably adjusted in consideration of the control accuracy.

In this embodiment, the first guide roll 14 is separated from the upper roll 12 and the second guide roll 1
5 is in contact with the upper roll 12, but in order to adjust the winding angle α1 with high accuracy, it is considered that it is more advantageous to contact each of the guide rolls 14 and 15 with the upper roll 12. However, when the guide roll is moved while being in contact with the upper roll 12, it is necessary to move the guide roll with high accuracy.
In the present embodiment, the movable first guide roll 14 is separated from the upper roll 12, and the position of the second guide roll 1 is fixed.
5 is in contact with the upper roll 12. Of course, considering these points, it is preferable to separate the movable guide roll at a position very close to the upper roll 12.

Furthermore, the basic configuration of the single-sided corrugated cardboard manufacturing apparatus of this embodiment is substantially the same as that of the conventional single-sided corrugated cardboard manufacturing apparatus, and is a relatively simple apparatus. There is also an advantage that it is easy. The direction of movement of the guide rolls 14 and 15 is as follows.
The direction is not limited to the circumferential direction of the upper roll 12, but may be a diameter direction of the upper roll 12, or a direction including the circumferential direction and the diametric direction.

In the present embodiment, the upper rolls 12,
Although the first guide roll 14 and the second guide roll 15 are all heated to heat the liner 5 and the like, the heating state of the upper roll 12, the first guide roll 14, and the second guide roll 15 can be adjusted. In this way, it is conceivable to control in combination with the adjustment of the winding angle α1 of the corrugated core paper 6 and the liner 5 around the upper roll 12.

Further, in the present embodiment, the tension of the liner 5 is adjusted by the first guide roll 14 and the second guide roll 15.
Fine adjustment of each peripheral speed by control of each driving means (motor and the like) and fine adjustment of each suction force of the first guide roll 14 and the second guide roll 15 are performed. As shown in FIG. 2, a pulley 17a mounted on a rotating shaft of a guide roll (here, the first guide roll 14),
The pulley 1 is connected via the pulley 17a and the conductive belt 17c.
Alternatively, the guide roll may be braked by electromagnetic control using a powder brake device 17 provided with the roller 7b. In FIG. 2, the same symbols as those in FIG.

Next, a single-sided cardboard manufacturing apparatus according to a second embodiment of the present invention will be described with reference to FIG. The single-sided corrugated cardboard manufacturing apparatus of the present embodiment is obtained by adding an elastic pressure roll 40 and the like to the first embodiment, and the other parts are configured in the same manner as the first embodiment. 3, the same reference numerals as those in FIG. 1 denote the same components. As shown in FIG. 3, an elastic pressure roll (pressure roll) 40 is disposed at a position above the upper roll 12 and adjacent to the line of the liner 5. Is pressed against the upper roll 12 together with the corrugated core paper 6 to press the corrugated core paper 6 and the liner 5 together. In the case of the embodiment, a configuration is such that a hard layer (surface layer) 45 is wound around the outer periphery of the elastic body pressure roll (inner layer) 40. For the hard layer 45, an elastic material that is harder than the material of the elastic pressure roll (inner layer) 40 that is the inner layer is selected. Therefore, the hard layer 45
Can be said to form a part of the elastic pressure roll or the elastic pressure roll in a broad sense. The shaft roll 35, the elastic body pressure roll 40, and the hard layer 45 rotate integrally.

The elastic pressure roller 40 is made of an elastically deformable material, and is adhered to the outer peripheral surface of a shaft roll 35 for transmitting a rotational driving force from the outside to the shaft core. . Here, the elastic body pressure roll 40 is made of a heat-resistant rubber material such as silicon, chloroprene rubber, acrylic rubber, nitrile rubber, ethylene propylene rubber or the like so as to be able to undergo large deformation and withstand contact with the preheated liner. It is made of synthetic rubber (also referred to as heat-resistant rubber when its heat resistance is emphasized), which is provided with heat resistance (heat resistance of about 250 ° C.) and abrasion resistance.

It should be noted that the material of the elastic pressure roll 40 is substantially 2
The reason why the heat resistance is about 50 ° C. is that the degree of temperature rise of the elastic body pressure roll 40 varies depending on the operating state and the operating environment. This is because even when the temperature of the elastic body pressure roll 40 becomes the highest in the operating environment, it can sufficiently withstand this. Therefore, if the operating state and the operating environment of the elastic pressure roller 40 are limited, the heat resistance up to this point becomes unnecessary, and the elastic pressure roller 40 is operated in a more severe operation state than expected. If so, higher heat resistance is required.

The hard layer 45 is made of an elastic material that is harder than the material of the elastic pressure roller (inner layer) 40 as the inner layer. The shaft roll 35, the elastic body pressure roll 40, and the hard layer 45 rotate integrally. Therefore, according to the single-faced corrugated cardboard manufacturing apparatus of the present embodiment, in addition to the functions and effects of the first embodiment, by using the elastic pressure roller 40 formed of a material that can be greatly deformed, the elastic material can be added. Since the nip width between the pressure roll 40 and the upper roll 12 can be increased, the pressing force at the bonding portion between the corrugated core paper 6 and the liner 5 can be reduced, the bonding time can be increased, and the bonding strength is insufficient. Stable bonding is possible by preventing paper breakage due to slight or excessive pressurization, and furthermore, vibration and noise generated at the bonded portion can be reduced, and press marks generated on the liner 5 side of the single-faced cardboard 9 can be prevented. There is also an advantage.

The pressing force when the elastic pressure roller 40 is brought into pressure contact with the upper roll 12 is adjusted by the elastic pressure roller 4.
Since it is controlled based on the amount of deformation of 0,
There is also an advantage that an optimum nip width that can obtain the above advantages can always be maintained. Further, since the hard layer 45 is provided on the outer periphery of the elastic pressure roll 40, if the surface of the roll is damaged due to pressing against the upper roll 12 during operation, only the hard layer 45 on the surface is repaired (replaced). )
This has the advantage of improving maintainability.

Further, by making the material of the hard layer 45 on the surface harder than the material of the inner elastic pressure roll (inner layer) 40, the pressure generated by the deformation of the hard layer 45 can be reduced. Since the repulsive force acts outward from the (inner layer) 40, there is an advantage that the contact with the upper roll 12 is stabilized and more stable adhesive performance can be secured. In particular, when the single-sided corrugated paper (the liner 5 or the core paper 4) is a thick paper, if the hardness of the outer surface of the elastic pressure roll 40 is low (or the rigidity is low), the thick paper is transferred to the upper roll 12. Although it is difficult to perform stable pressure contact over a wide range, as in the present embodiment, the elastic pressure roller 4
If a surface layer (hard layer) 45 harder (higher rigidity) than 0 is provided, even a thick paper can be stably pressed against the upper roll 12 over a wide range, and more stable adhesion Performance can be secured.

Of course, in order to press the paper (the liner 5 or the core paper 4) against the upper roll 12 over a wide range, the inner layer, that is, the elastic pressure roll 40 is sufficiently flexible (low in rigidity). It is important that the hard layer 45 is provided on the outer peripheral surface of the elastic pressure roll 40 to stably press the paper (the liner 5 and the core paper 4) against the upper roll 12 over a wide range. It can be done.

As a specific material of the surface layer (hard layer) 45, it is conceivable to use a hard rubber, a thin metal plate, a composite belt or the like. That is, the surface layer 45 is harder (has a higher rigidity) than the inner layer (that is, the elastic body pressure roll) 40, and is equal to or more than the elastic body pressure roll 40 as the inner layer. In addition, heat resistance (heat resistance of about 250 ° C.) and abrasion resistance must be ensured so as to be able to withstand contact with the preheated liner.

Materials satisfying these conditions include a hard rubber, a thin metal plate, a composite belt and the like.
For example, urethane is considered as a hard rubber, a thin plate such as steel is considered as a metal thin plate, and Teflon (registered) is used as a composite material belt in a fiber core using a flexible but high-strength fiber such as aramid fiber. One coated with a heat-resistant resin such as (trademark) can be considered.

When the single-faced cardboard paper (the liner 5 or the core paper 4) is a thin paper, the surface layer (hard layer) 45 may be omitted and only the elastic pressure roll 40 may be used. next,
A single-sided cardboard manufacturing apparatus according to a third embodiment of the present invention will be described with reference to FIG. Since the single-faced cardboard manufacturing apparatus of the present embodiment has the same basic configuration as the second embodiment, the same parts as those in the second embodiment are denoted by the same reference numerals in the drawings.

The single-sided corrugated cardboard manufacturing apparatus of this embodiment is characterized in that an air bag filled with pressurized air is provided inside a press roll. That is, as shown in FIG. 4, in the present embodiment, a rubber tube (air bag) 50 is disposed between the axial roll 35 and the elastic pressing roll 40 as an outer layer thereof.
The rubber tube 50 is filled with pressurized air so that an internal pressure can be applied to the elastic pressure roll 40. Further, a plurality of rubber tubes 50 are arranged side by side in the axial direction.

Therefore, according to the single-sided corrugated cardboard manufacturing apparatus of the present embodiment, in addition to the same operation and effect as the first and second embodiments, the internal pressure is applied to the inside of the elastic pressure roll 40, Since a repulsive force can be applied from the inside to the elastically deformed portion due to the pressurization of the upper roll 12, it is possible to cope with a change in pressing force due to a change in unevenness between the steps of the upper roll 12, and more stable adhesive performance There is an advantage that can be secured.

There is also an advantage that the elastic recovery (return to a circular shape) of the deformed portion which has deviated from the pressure area with the upper roll 12 due to the rotation can be performed quickly and reliably. In the present embodiment, a configuration in which the elastic pressure roller 40 interposed between the hard layer 45 and the rubber tube 50 may be omitted.
In this case, the hard layer 45 functions almost similarly to the elastic body pressure roll 40 (however, the rigidity is increased).

Next, a single-sided cardboard manufacturing apparatus according to a fourth embodiment of the present invention will be described with reference to FIG. In this embodiment, as shown in FIG. 5, a pressure mechanism 18 is added to the above-described second embodiment. The pressing mechanism 18 includes a pressing shoe 18 a provided between the elastic pressing roller 40 on the outer periphery of the upper roll 12 and the second guide roll 15 and slidably in contact with the liner 5, an elastic member 18 b
, A pressure bar 18c, a piston rod 18d, and a pressure cylinder 18e, and the pressure of the pressure cylinder 18e is adjusted so that the piston rod 18d and the pressure bar 1
The liner 5 is pressed by the pressing shoe 18a via the elastic member 8c and the elastic member 18b.

According to this embodiment, since the liner 5 is pressed by the pressure shoe 18a, in addition to the same operation and effect as the first and second embodiments, the liner 5 is pressed against the corrugated core paper 6. Can be adjusted, and the quality improvement of the step roll 9 can be promoted. That is, the liner 5 through the elastic member 18b
Is smoothly performed, and the pressing force by the pressurizing cylinder 18e can be finely adjusted. Therefore, not only can the pressurization be promoted, but also the pressurizing can be finely adjusted.
The pressing force of the bonding portion between the corrugated core paper 6 and the liner 5 can be appropriately adjusted, preventing the paper from being broken due to insufficient adhesive force or excessive pressure, and enabling stable bonding. This is advantageous in that noise is reduced and press marks generated on the liner 5 side of the single-faced cardboard 9 are prevented.

The embodiments of the single-faced corrugated cardboard manufacturing apparatus of the present invention have been described above. However, the present invention is not limited to these embodiments, and various modifications are made without departing from the spirit of the present invention. be able to. For example, a manufacturing apparatus may be configured by combining the parts of the embodiments. In the above embodiment, the upper roll 12 is a bonding roll, but the lower roll 13 may be a bonding roll. That is, an elastic pressure roll is disposed on the lower roll 13 side, the core paper 4 is supplied from the upper roll 12 side, and the liner 5 is bonded on the lower roll 13. The upper roll 12 and the lower roll 1
No. 3 may be dedicated to step rolling and a separate bonding roll may be provided.

[0065]

As described in detail above, according to the apparatus for manufacturing single-sided corrugated cardboard according to the first aspect of the present invention and the method for manufacturing single-sided corrugated cardboard according to the eighteenth aspect of the present invention, the single-sided corrugated cardboard is disposed with the bonding roll interposed therebetween. A pair of guide rolls for guiding the travel of the liner so that the liner is wound around the outer periphery of the laminating roll, and a first guide roll disposed upstream of the laminating roll in the liner transport direction; A second guide roll disposed downstream of the laminating roll in the liner transport direction so that the first guide roll can change a contact length of the liner to an outer periphery of the laminating roll. The heating state and the pressing state of the liner can be appropriately adjusted according to the contact length of the liner with the outer periphery of the laminating roll. Pressure of the bonding part In addition to reducing the amount of time required for bonding, the bonding time can be extended, preventing shortage of paper due to insufficient bonding force or excessive pressurization, enabling stable bonding. There is also an advantage that generation of a press mark generated on the liner side of the cardboard can be prevented.

According to the one-sided corrugated cardboard manufacturing apparatus of the present invention, by moving the first guide roll, the contact length of the liner to the outer periphery of the laminating roll according to the paper type and the machine speed can be reduced. By increasing or decreasing the amount, the amount of heat given to the liner before bonding can be adjusted, and stable bonding performance can be secured. According to the apparatus for manufacturing single-faced corrugated cardboard according to the third aspect of the present invention, the accuracy requirement at the time of moving the first guide roll is eased and the movement control is facilitated.

According to the single-faced corrugated cardboard manufacturing apparatus of the present invention, the contact length of the liner with the outer periphery of the bonding roll can be appropriately changed by moving the first guide roll.
According to the one-sided corrugated cardboard manufacturing apparatus of the present invention, by moving the second guide roll, the contact length of the liner to the outer periphery of the laminating roll is increased or decreased according to the paper type or the machine speed. By adjusting the amount of heat applied to the single-sided cardboard in the initial bonding state, a stable bonding force can be secured.

According to the single-faced corrugated cardboard manufacturing apparatus of the present invention, the contact length of the liner to the outer periphery of the bonding roll can be appropriately changed by moving the second guide roll.
According to the one-sided corrugated cardboard manufacturing apparatus of the present invention, the accuracy requirement at the time of moving the second guide roll is eased, and the movement control is facilitated. According to the one-sided cardboard manufacturing apparatus of the present invention, the contact length of the liner to the outer periphery of the bonding roll can be appropriately changed by moving the second guide roll.

According to the single-sided corrugated cardboard manufacturing apparatus of the present invention, the laminating of the single-sided corrugated cardboard can be performed more reliably by promoting the heating of the liner. Claim 11-
According to the one-sided corrugated cardboard manufacturing apparatus of the present invention described in 14, the one-sided corrugated cardboard can be more appropriately bonded by adjusting the tension of the liner. According to the single-sided corrugated cardboard manufacturing apparatus of the present invention, the manufacturing apparatus can be operated according to the single-sided corrugated cardboard production conditions.

According to the one-sided corrugated cardboard manufacturing apparatus of the present invention, since the pressurized state of the liner can be more appropriately adjusted, it is possible to prevent the shortage of the adhesive force or the paper breakage due to the excessive pressurization, thereby stabilizing the liner. Adhesion is promoted,
In addition to reducing the vibration and noise generated at the bonding part, the advantage of preventing the generation of press marks on the liner side of the single-sided cardboard becomes more reliable, and by adjusting the tension of the liner, the single-sided cardboard can be bonded more appropriately. I can do it.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing a configuration of a single-sided cardboard manufacturing apparatus as a first embodiment of the present invention.

FIG. 2 is a schematic side sectional view showing a configuration of a modified example of the single-sided cardboard manufacturing apparatus as the first embodiment of the present invention.

FIG. 3 is a schematic side sectional view showing a configuration of a single-sided cardboard manufacturing apparatus according to a second embodiment of the present invention.

FIG. 4 is a schematic side sectional view showing a configuration of a single-sided cardboard manufacturing apparatus as a third embodiment of the present invention.

FIG. 5 is a schematic side sectional view showing a configuration of a single-sided cardboard manufacturing apparatus as a fourth embodiment of the present invention.

FIG. 6 is a schematic side sectional view showing a configuration of a conventional single-sided corrugated cardboard manufacturing apparatus, where (a) is an overall configuration diagram and (b) is an enlarged view of a meshing portion between an upper roll and a lower roll.

[Explanation of symbols]

 Reference Signs List 4 core paper 5 liner 6 corrugated core paper 7 glue roll 8 glue 9 single-sided corrugated cardboard 10 side hole (suction hole) 11 circumferential slit groove 12 upper roll (lamination roll) 13 lower roll (step roll) 14 first guide roll 15 Second guide roll 17 Powder brake device 17a, 7b Pulley 17c Belt 18 Pressing mechanism 18a Pressing shoe 18b Elastic member 18c Pressing bar 18d Piston rod 18e Pressing cylinder 20 Gluing device 35 Shaft core roll 40 Elastic pressing roll (Pressing roll) 45 Hard layer 46 Pressure chamber 50 Rubber tube (air bag)

 ──────────────────────────────────────────────────の Continued on the front page (72) Koji Hattori 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd.Paper & Printing Machinery Division (72) Seiji Seki 5007 Itozakicho, Mihara City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. (72) Inventor Toshihide Kato 5007 Itozakicho, Mihara-shi, Hiroshima Mitsubishi Heavy Industries, Ltd. Paper and Printing Machinery Division F-term (reference) 3E078 AA17 BB02 BB44 CC06 CC12 CC42 CC49X CC57

Claims (18)

[Claims] 1. A single-faced corrugated cardboard manufacturing apparatus for producing a one-sided corrugated cardboard by gluing a corrugated top of a corrugated core paper to a corrugated top and pressing and laminating a liner on the corrugated corrugated top. A laminating roll formed and transported while holding the core paper by the corrugated step; and a laminating roll disposed between the laminating rolls so that the liner runs around the outer periphery of the laminating roll. A first guide roll disposed upstream of the laminating roll in the liner transport direction and a second guide roll disposed downstream of the laminating roll in the liner transport direction. A single-sided corrugated cardboard manufacturing apparatus, comprising a guide roll, wherein the first guide roll is configured to be movable so as to change a contact length of the liner with an outer periphery of the bonding roll. Place. 2. The single-faced corrugated cardboard manufacturing apparatus according to claim 1, wherein the first guide roll is configured to be movable in a circumferential direction of the laminating roll. 3. The single-faced corrugated board manufacturing apparatus according to claim 1, wherein the first guide roll is separated from the laminating roll. 4. The single-sided corrugated cardboard manufacturing apparatus according to claim 1, wherein the first guide roll is in contact with the laminating roll and through the core paper. 5. The apparatus according to claim 1, wherein the second guide roll is configured to be movable so as to change a contact length of the liner with an outer periphery of the bonding roll. The single-sided corrugated cardboard manufacturing apparatus according to any one of the above items. 6. The single-faced cardboard manufacturing apparatus according to claim 5, wherein the second guide roll is configured to be movable in a circumferential direction of the bonding roll. 7. The single-faced corrugated cardboard manufacturing apparatus according to claim 5, wherein the second guide roll is separated from the laminating roll. 8. The single-sided corrugated cardboard manufacturing apparatus according to claim 5, wherein the second guide roll is in contact with the bonding roll and through the core paper. 9. The single-faced corrugated cardboard manufacturing apparatus according to claim 1, further comprising heating means for heating the first guide roll. 10. The single-faced corrugated cardboard manufacturing apparatus according to claim 1, further comprising heating means for heating the second guide roll. 11. The first guide roll and / or the second guide roll.
The guide roll is provided with a tension adjusting mechanism for adjusting the tension of the liner.
The single-sided corrugated cardboard manufacturing apparatus according to any one of the above items. 12. The tension adjusting mechanism according to claim 1, wherein the tension adjusting mechanism adjusts the tension of the liner by changing a suction force for sucking the liner to an outer periphery of the first guide roll and / or the second guide roll. The single-sided cardboard manufacturing apparatus according to any one of claims 1 to 11. 13. The tension adjusting mechanism for adjusting the tension of the liner by changing the rotation speed of the first guide roll and / or the second guide roll. The single-sided corrugated cardboard manufacturing apparatus according to any one of the above items. 14. The tension adjusting mechanism for adjusting the tension of the liner by changing a transfer torque of the liner by the first guide roll and / or the second guide roll. The single-sided corrugated cardboard manufacturing apparatus according to any one of Items 1 to 11. 15. The first guide roll and / or the second guide roll.
The change of the contact length of the liner to the outer periphery of the laminating roll by moving the guide roll is performed according to the production condition of the single-sided corrugated cardboard. Single-sided corrugated cardboard manufacturing equipment. 16. The change in the speed of the first guide roll or the second guide roll by the speed variable mechanism,
The single-faced corrugated cardboard manufacturing apparatus according to any one of claims 1 to 15, wherein the production is performed in accordance with a single-faced corrugated cardboard production condition. 17. A pressure roll formed of an elastically deformable material that presses and presses the liner toward the bonding roll is provided between the first guide roll and the second guide roll. 17. The method according to claim 1, wherein
The single-sided cardboard manufacturing apparatus according to any one of the above items. The single-sided corrugated cardboard manufacturing apparatus according to claim 1. 18. A corrugated step is formed on an outer peripheral surface of the corrugated core paper in a first step of corrugating the corrugated core paper, a second step of gluing the corrugated core paper on a step top of the corrugated core paper. A third step of transporting while holding by the laminating roll; and a first guide roll disposed on the upstream side of the laminating roll in the liner transport direction with respect to the liner transported toward the laminating roll; A fourth step of laminating and pressing the core paper while being wound around the outer periphery of the laminating roll by the guidance of a second guide roll disposed downstream of the laminating roll in the liner transport direction; Wherein the first guide roll is moved according to the production condition of the single-sided corrugated cardboard, and the length of contact of the liner with the outer periphery of the laminating roll is set in advance. .