JP2003291230A - Apparatus for laminating double-faced corrugated cardboard sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make an apparatus for laminating a double-faced corrugated cardboard sheet compact and to efficiently laminate a sheet material. <P>SOLUTION: The first step roll 52A, the second step roll 52B, belt mechanisms 53 and 54 which form the first pass-line P1 as a pass-line for sheet materials 20-24 with a back liner 20 and a core 21 traveling and the second pass-line P2 formed by folding the first pass-line P1 with a single-corrugated sheet 22 and a surface liner 23 traveling, with its belt 53C contacted with the first step roll 52A while being pressed in the first pass-line P1, a heating means 55 installed to face a belt 54C in the second pass-line P2, and a press means 56 for pressing the belt 54C to the heating means 55 are provided as constituents. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided corrugated board in which a core lined up on a back liner is pasted with glue to form a single-stage sheet, and a front liner is pasted to the core side of the single-stage sheet with glue. The present invention relates to a bonding device for double-sided corrugated board sheets.

[0002]

2. Description of the Related Art In a corrugated cardboard sheet, one liner (back liner) is laminated with glued cores to form a one-stage sheet, and the other side liner (front liner) is attached to the core side of the one-stage sheet. A corrugated cardboard sheet is manufactured by laminating the above, and the corrugated cardboard sheet is cut into an appropriate length.

FIG. 3 is a view showing an example of a conventional apparatus for manufacturing such a corrugated board sheet, and is a schematic side view showing the structure thereof. This corrugated board sheet manufacturing apparatus mainly includes a back liner preheater 10 for heating the back liner 20 fed from the back liner mill roll stand S1, and a core 21 fed from the center core mill roll stand S2. The core preheater 12 to be heated and the core 21 heated by the core preheater 12 are stacked and glued, and the back liner 20 heated by the back liner preheater 10
A single facer 11 for laminating, a single-sided sheet preheater 13 for heating a single-sided sheet 22 formed by the single facer 11, a front liner mill roll stand S
The front liner preheater 14 for heating the front liner 23 fed from No. 3, the glue machine 15 for gluing the one-side sheet 22 heated by the single-stage sheet preheater 13, and the front-liner preheater 14 for the one-side sheet 22 glued by the glue machine 15. Double facer 16 for forming a corrugated cardboard sheet (double-sided sheet) 24 by bonding more heated front liner 23, slitter scorer 17 for scoring and grooving corrugated cardboard sheet 24 formed by double facer 16, and ruler with slitter scorer 17 A cutoff 18 for cutting the inserted cardboard sheets 24 into divided plates to produce a corrugated sheet (plate-shaped cardboard sheet) 25 as a final product, and a stacker 19 for stacking the cardboard sheets 25 in the order of completion. .

The devices 10 to 19 are arranged substantially in series along the seat running direction, and the single-stage seat 22 manufactured by the single facer 11 is placed on a floor called a bridge 40 provided on the upper part of the device. By passing the mill roll stand S2 for the center core and the mill roll stand S3 for the front liner, the mill roll stand S2 for the center core is fed to the double facer 16. At this time, the one-sided sheet 22 is once bent on the bridge 40 in a wave shape and stored, and then fed to the double facer. For example, when the back liner mill roll of the back liner mill roll stand S1 is replaced or when the center core mill roll S2 is replaced,
The single-sided sheet 22 cannot be manufactured, but the bridge 4
By consuming the one-sided sheet 22 stored on the 0, the corrugated board manufacturing apparatus can be operated without stopping during the mill roll replacement work.

The single facer 11 and the double facer 16 will be described below with reference to FIGS. 4 and 5. FIG. 4 is a schematic diagram showing the configuration of the single facer 11, and FIG. 5 is a schematic diagram showing the configuration of the double facer 16. As shown in FIG. 4, the single facer 11 has a pressure belt 113 wound around a belt roll 111 and a tension roll 112, and has a corrugated surface and abuts against the pressure belt 113 in a pressurized state. The upper roll 114 and the lower roll 115, which has a corrugated surface and meshes with the upper roll 114, are provided. Back liner preheater 1
The back liner 20 heated at 0 is wrapped around the liner preheating roll 117 to be preheated on the way, and then is guided by the belt roll 111 to form the pressure belt 113 together with the pressure belt 113 and the upper roll 114. Transferred to the nip. On the other hand, the core 21 heated by the core preheater 12 is wound around the core preheating roll 118 on the way to be preheated, and after being rolled at the meshing portion of the upper roll 114 and the lower roll 115, Upper roll 1
14 is guided by the pressure belt 113 and the upper roll 1.
It is transferred to the nip portion with 14.

A gluing device 116 is arranged near the upper roll 114. The gluing device 116 is a gluing roll 116 for gluing the glue dam 116 a storing the glue 30 and the core 21 conveyed by the upper roll 114.
b, a meter roll 116c for adjusting the amount of the glue 30 attached to the peripheral surface of the gluing roll 116b, and a meter roll 11
It is composed of a glue scraping blade 116d for scraping glue from 6c. The core 21 rolled up at the meshing portion of the upper roll 114 and the lower roll 115 is glued to the tops of the stages by the glue roll 116b, and the pressure belt 1
It is bonded to the back liner 20 at the nip portion between the upper roller 13 and the upper roll 114. Thereby, the one-step sheet 22 is formed.

As shown in FIG. 5, the double facer 16 is divided into a heating section 16A on the upstream side and a cooling section 16B on the downstream side along the running line of the one-step seat 22 and the front liner 23. Of these, a plurality of heating plates 162 are arranged in the heating section 16A, and the front liner 23 is arranged in the heating plate 1
It is designed to pass over 62. The heating plate 162 is heated to a predetermined temperature by supplying steam to the inside.

On the heating plate 162, a loop-shaped pressure belt 163 is running in synchronism with the above running line in synchronism with the one-stage seat 22 and the front liner 23.
A plurality of pressurizing units 164 are provided in the heating plate 1 in the loop 63.
It is arranged so as to face 62. Pressure unit 1
Reference numeral 64 denotes a pressure bar 1 that is in sliding contact with the back surface of the pressure belt 163.
64a and an actuator 164b for pressing the pressure bar 164a against the heating plate 162 side.

The single-stage sheet 22 glued by the glue machine 15 (see FIG. 3) is carried in between the pressure belt 163 side and the heating plate 162 from the pressure belt 163 side. On the other hand, the front liner 23 heated by the front liner preheater 14 (see FIG. 3) is preheated by the liner inlet preheating roll 165, and then, is heated from the heating plate 162 side to the space between the pressure belt 163 and the heating plate 162. Be delivered to. And the single-sided sheet 2
The second liner 23 and the front liner 23 are carried in between the pressure belt 163 and the heating plate 162, respectively, and then are transferred integrally to the cooling section 16B in a state of being vertically overlapped with each other. During this transfer, the single-sided sheet 22 and the front liner 23 are heated from the front liner 23 side while being pressed by the pressing unit 164 via the pressing belt 163, and are bonded to each other to form the corrugated cardboard sheet 24. The cardboard sheet 24 is used in the cooling section 1.
The rotary shear 166 provided at the outlet of 6B cuts the entire width or the end portion and transfers it to the slitter scorer 17 in the next step.

[0010]

However, in the above-mentioned conventional apparatus, since the respective devices 10 to 19 are arranged substantially in series along the seat traveling direction as shown in FIG. 3, the total lengths of the apparatuses are compared. There is a problem that it becomes very long. Further, due to such a series arrangement, the distance between the single facer 11 and the double facer 16 becomes relatively long. The back liner 20 and the core 21 are each heated before being bonded to each other to form the one-step sheet 22, but since the distance between the single facer 11 and the double facer 16 is relatively long, the back liner 20 and the center core 21 are once on the bridge 40. Therefore, it is cooled by the time it is sent to the double facer 16. For this reason, double facer 16
As described above, the single-stage sheet preheater 13 is provided on the upstream side of the sheet, and the single-stage sheet 22 is heated by the single-stage sheet preheater 13 so that the temperature is sufficient for bonding with the front liner 23. This is an inefficient manufacturing process in which the one-sided sheet 22 is heated again after being cooled.

Further, since the one-step sheet 22 is not subjected to any temperature control such as heating while being fed to the double facer 16, temperature unevenness (= moisture unevenness) occurs in the one-step sheet 22. Will end up. Therefore, in the corrugated cardboard sheet 25 to be manufactured, due to such moisture unevenness, a warp in the width direction that vertically warps along the width direction and a warp in the flow direction that vertically warps along the flow direction occur. There is a problem that it will end up.

By the way, in Japanese Patent Laid-Open No. 9-85859,
As described above, a corrugated board manufacturing apparatus is disclosed in which the single-stage sheet is prevented from being cooled while being fed from the single facer to the double facer. With this device,
A single facer that forms a single-faced cardboard sheet by pasting back liner paper and core paper, and a conveyance path for the front liner paper are provided in parallel with the double facer, and are used to paste the single-faced cardboard sheet. A single-stage glue roll device is arranged immediately after the outlet of the single facer.

With such a structure, the single-faced corrugated board sheet manufactured by the single facer is immediately fed to the double facer to be glued, and the single-stage sheet may be cooled while being fed to the double facer. Suppressed. However, this device has a problem that the single facer and the double facer are arranged in series along the sheet conveying direction, and the total length thereof becomes relatively long as in the device shown in FIG. .

The present invention was devised in view of the above problems, and provides a double-sided corrugated board sheet bonding apparatus which can make the apparatus compact and can efficiently bond sheet materials. The purpose is to

[0015]

In order to achieve the above object, a double-sided corrugated board laminating apparatus according to the present invention (claim 1) is a single-sided sheet in which a core wound on a back liner is pasted with glue. And, in the laminating device of the double-sided corrugated sheet, the peripheral surface is formed in a wavy shape, and the front liner is pasted on the center side of the single-sided sheet with glue to form a double-sided corrugated sheet, and the double-sided corrugated sheet is arranged in a meshed state. A first step roll and a second step roll that cooperate with each other at the meshing portion to step the core, a belt mechanism, a heating means, and a pressurizing means. I am trying.

Here, the belt mechanism forms a pass line for the sheet material of the front liner, the center core, and the back liner and runs in synchronization with the sheet material, and a belt around which the belt is wound. A roll having a first pass line along which the back liner and the core run, and the first pass line folded back as the above-mentioned sheet material pass line; A second pass line along which the liner travels is formed, and the belt is configured to abut against the first corrugating roll under pressure at the first pass line.

Further, the heating means is provided so as to oppose the belt through the second pass line, and the pressing means presses the belt against the heating means. Then, in the first pass line, the core and the back liner rolled by the corrugating roll are sandwiched between the belt and the first corrugating roll and bonded to each other to form the one-stage sheet. The double-sided corrugated sheet is formed by forming the double-sided corrugated sheet by forming the front liner and the single-sided sheet by the second pass line and applying pressure to the heating means through the belt by the pressing means. To do.

The belt mechanism may be composed of a first unit and a second unit which are horizontally arranged. In this case, each of the first unit and the second unit is configured to include a pair of belt rolls and a loop belt wound around the belt rolls, and the belt of the first unit is , Abutting the first corrugating roll in a pressurized state on the first pass line, and the belt of the second unit on the second pass line by the pressing means by the heating means. (Claim 2).

Alternatively, the belt mechanism may be composed of a pair of belt rolls and a loop belt wound around the belt rolls. In this case, the belt comes into contact with the first corrugating roll under pressure in the first pass line and presses the heating means by the pressurizing means in the second pass line. (Claim 3). The heating means may be, for example, a steam heating type (Claim 4) or an inductive heating type (Claim 5).

The pressurizing means includes, for example, a pressurizing bar for pressing the front liner and the one-sided sheet against the heating means via the belt, and an actuator for advancing and retracting the pressurizing bar with respect to the belt. May be provided (Claim 6), or an air injection unit for pressurizing the front liner and the one-sided sheet against the heating unit via the belt by the jetted air may be provided. Good (Claim 7).

It is preferable that a soundproof wall is provided so as to cover the belt mechanism and the corrugated rolls.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (A) First Embodiment FIG. 1 is a schematic side view showing a configuration of a main part of a double-sided corrugated board sheet bonding apparatus and a corrugated board sheet manufacturing apparatus equipped with the main bonding apparatus as a first embodiment of the present invention. It is a figure.

The corrugated board sheet manufacturing apparatus of this embodiment is
In the configuration shown in FIG. 3, a single-stage sheet 22 is produced by bonding the middle core 21 wound on the back liner 20 with glue in a range indicated by a dashed line, and further, on the side of the middle core 21 of the single-stage sheet 22. The configuration until the corrugated cardboard sheet 24 is produced by pasting the front liner 23 is replaced with that shown in FIG. 1, and the subsequent configuration is similar to that of the conventional apparatus. It comprises a slitter scorer 17 for performing the above and the like, and a cutoff 18 for cutting the corrugated cardboard sheet 24 into an appropriate length.

The main part of the apparatus will be described below with reference to FIG. The back liner mill roll stand S1, the core mill roll stand S2, the front liner mill roll stand S3,
Back liner mill roll M1, core mill roll M, respectively
2. The front liner mill roll M3 is set. Two mill rolls are set on each of the stands S1, S2, S3, and when one of the mill rolls is no longer consumed, the other mill roll is used.

The back liner 20 fed from the back liner mill M1 is the heating roll 10 of the back liner preheater 10.
After being wound around the peripheral surface of No. 1, it is supplied to the laminating apparatus 50. Steam is supplied to the inside of the heating roll 101, and thus the back liner 20 is heated by being wound around the peripheral surface of the heating roll 101.

Similarly, the core 21 fed from the core mill roll M2 is heated by the heating roll 12 of the core preheater 12.
After being wound around the peripheral surface of No. 1 and heated, it is supplied to the laminating apparatus 50, and the front liner 23 fed from the front liner mill roll M3 is provided on the peripheral surfaces of the heating rolls 141A and 141B of the front liner preheater 14. After being sequentially wound and heated, they are supplied to the laminating apparatus 50.

As mentioned above, conventionally, during the replacement work of the back liner mill roll and / or the core mill roll,
As shown in FIG. 3, the one-sided sheet 22 stored on the bridge 40 is consumed to operate the corrugated board manufacturing apparatus without stopping it. In contrast, here
The initial winding amount of each of the mill rolls M1 to M3 is set so that the time from the start of consumption in the laminating device 50 to the complete consumption is substantially the same. That is,
The back liner mill roll M1 and the center line mill roll M2 can be replaced at the same time as the front liner mill M3, and it is not necessary to store them on the bridge 40 as in the conventional case.

The laminating apparatus 50 according to the first embodiment of the present invention, as shown in FIG.
A, first stage roll 52A, second stage roll 52B, 2
A pressure belt mechanism composed of two pressure belt units 53 and 54, a gluing device 51B, a heating plate (heating means) 55, and a pressure device (pressurizing means) 56 are provided. The pressure belt unit 53 includes belt rolls 53A and 53B.
And a pressure belt 53C wound around these belt rolls 53A and 53B. Similarly, the pressure belt unit 54 includes belt rolls 54A and 54B.
And a pressure belt 54C wound around these belt rolls 54A and 54B.

The pressure belts 53C and 54C are used to press the sheets 20 to 23 as described later, and
The seats 20 to 23 travel in synchronization with the seats 20 to 23.
Forming a pass line. The pressure belt units 53 and 54 are arranged next to each other substantially horizontally (including the case where they are completely horizontal), the heating plate 55 is arranged above them, and the corrugated rolls 52A and 52B are below them. Are arranged.

The pressure belt units 53, 5
A pass line P1 along which the back liner 20 and the core 21 (one-sided sheet 22) travel is formed between the 4 and the corrugating roll 52A, and the pressure belt units 53 and 54 and the heating plate 55 are formed.
And the liner 23 (the corrugated cardboard sheet 2
A pass line P2 along which 4) runs is formed.

The upper roll 52A has a corrugated surface, is in contact with the pressing belt 53C on the pass line P1 under pressure in the upper part, and meshes with the lower roll 52B whose corrugated surface is in the lower part. ing. The hot platen 55 is heated to a predetermined temperature by supplying steam to the inside thereof, and in the pass line P1, the front liner 2
3 is adapted to run while slidingly contacting the hot platen 55.

The pressurizing device 56 is arranged in the loop of the pressurizing belt 54C and comprises a plurality of pressurizing units arranged in the sheet width direction (direction perpendicular to the paper surface in FIG. 1). There is. Each of these pressurizing units, though shown in a simplified manner in FIG. 1, is composed of a pressurizing bar that is in sliding contact with the back surface of the pressurizing belt 54C and an actuator that presses the pressurizing bar toward the hot platen 55 side. There is.

The gluing devices 51A and 51B each include a glue dam 511 storing the glue 30, a glue roll 512, and a meter roll 513 for adjusting the amount of the glue 30 attached to the peripheral surface of the glue roll 512. Has been done. The gluing device 51A is configured to paste the gluing roll 512 to the core 21 conveyed by the upper roll 52A. Further, in the gluing device 51B, the gluing roll 512 has the belt roll 5 through the single-sided sheet 22.
It is arranged so as to face 4A, and the one-sided sheet 22
Is glued to the top of the step by the glue roll 512 when passing between the rolls 54A and 512.

Since the corrugated board sheet bonding apparatus according to the first embodiment of the present invention is constructed as described above, the corrugated board sheets are bonded as follows. That is, the back liner 20 heated by the back liner preheater 10 is guided by the belt roll 53A and is transferred to the nip portion between the pressure belt 53C and the upper roll 52A together with the pressure belt 54C. On the other hand, the core 21 heated by the center preheater 12 is rolled up at the meshing portion of the upper roll 52A and the lower roll 52B, glued to the top of the stage by the gluing device 51A, and then guided by the upper roll 52A. Is transferred to the nip portion between the pressure belt 53C and the upper roll 52A, and is bonded to the back liner 20 at this nip portion. Thereby, the one-step sheet 22 is formed.

The one-sided sheet 22 is used in the gluing device 51B.
After being glued to the side of the core 21 by the pressure belt 54C
At the same time, it is carried between the pressure belt 54C and the heating plate 55 so as to pass through the peripheral surface of the belt roll 54A and be folded back. The front liner 23 is also carried in between the pressure belt 54C and the heating plate 55, and the one-sided sheet 22
The front liner 23 and the front liner 23 are vertically overlapped with each other, and the heating plate 5
The vehicle runs in sliding contact with No. 5. At this time, the one-sided sheet 22 and the front liner 23 are pressed against the hot platen 55 by the pressurizing device 56 via the pressurizing belt 54C.
The three sides are heated and bonded to each other to form a corrugated board sheet 24.

In this bonding apparatus, the back liner 20 and the core 21 are bonded to each other on the pass line P1 below the pressure belt units 53 and 54 in this way, and the one-sided sheet 2
2 is manufactured, and the single-sided sheet 22 and the front liner 23 are attached to each other at the pass line P2 above the pressure belt units 53 and 54 to manufacture the double-sided corrugated board sheet 24. That is, the pass line P is formed above and below the pressure belts 53C and 54C.
1 and P2 are formed, and the respective sheets are bonded to each other on the two pass lines P1 and P2. As in the conventional device shown in FIGS.
In the facer 16, the loop-shaped pressure belt 113,
The device is spatially efficiently configured as compared with the case where the pass lines formed on one side of 163 are used for bonding.

Therefore, according to the present bonding apparatus,
Since the machine length can be shortened and the heated sheets 20 to 23 can be quickly laminated after heating, the single-stage sheet preheater 13 installed in the conventional apparatus is not required. Furthermore, each sheet 2 efficiently
The heating of 0 to 23 can be performed, the consumption of the heating medium (here, steam) can be suppressed, and the production cost of the corrugated board sheet can be suppressed. In addition, since the sheets 20 to 23 are maintained at a predetermined temperature or higher until the bonding is completed, there is an advantage that the temperature unevenness of the sheets 20 to 23 can be suppressed and the warpage can be suppressed. (B) Second Embodiment FIG. 2 is a schematic side view showing a configuration of a main part of a double-sided corrugated board sheet bonding apparatus and a corrugated board sheet manufacturing apparatus equipped with the main bonding apparatus according to the first embodiment of the present invention. It is a figure.

The laminating apparatus of this embodiment is different from the laminating apparatus of the first embodiment in that the pressure belt unit 5 is used.
3, 54 are integrally formed. That is, as shown in FIG. 2, the pressure belt mechanism 5 of the present embodiment.
The reference numeral 3'includes belt rolls 53A, 53B, 54A and a pressure belt 53C '. The pressure belt 53C ′ is wound around the belt rolls 53A and 54A in a loop shape, and is pressed by the upper roll 52A by setting the position of the belt rolls 53A and 53B.

Since the other structure is the same as that of the first embodiment, its explanation is omitted. Since the corrugated board sheet bonding apparatus according to the second embodiment of the present invention is configured as described above, it is possible to obtain the same effect as that of the first embodiment with a simpler configuration than the first embodiment. There is. (C) Others Further, the corrugated board sheet laminating apparatus of the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without departing from the gist of the present invention.

For example, in each of the above-mentioned embodiments, the heating means (heating plate) 55 is of a steam heating type for heating using steam, but the heating method of the heating means is not limited to this.
A dielectric heating type may be used. By performing the dielectric heating, it is possible to heat only the glue applied to the sheet material without affecting the sheet material. Further, in each of the above-described embodiments, an example in which the pressing means (pressurizing device) 56 is installed on the belt roll 54B side has been described, but it may be further provided between the belt rolls 53A and 53B. In addition, in the second embodiment shown in FIG. 2, another pressing means may be provided between the belt rolls 53B and 54A.

Further, in each of the above-described embodiments, an example in which the pressing means (pressurizing device) 56 is pressed by using the pressing bar has been described, but the pressing means is not limited to this type. For example, a method of pressurizing by air injection may be used. Further, as shown by the two-dot chain line in FIGS. 1 and 2, in each of the above-described embodiments, the corrugated rolls 52A and 52B and the pressure belt mechanism 5
A soundproof wall 58 may be provided so as to cover 3, 54, 53 ′ and the heating plate 55. Thereby, in particular, the corrugated rolls 52A, 52
There is an advantage that the noise generated at the meshing portion of B can be suppressed from leaking to the outside.

[0042]

As described above in detail, in the device for laminating double-faced corrugated cardboard sheets of the present invention, in the first pass line, the core and the back liner that are rolled up by the corrugated rolls form the pressure belt and the corrugated belt. The one-step sheet is formed by being sandwiched by the rolls and laminated to form a one-step sheet, while the one-step sheet and the front liner are pressed by the pressing means by the second pass line formed by folding back the first pass line. The double-faced corrugated cardboard sheet is formed by being pressed and attached to the heating means via. That is, the sheet materials are bonded on both sides of the pass line formed by the pressure belt.

Therefore, as compared with the conventional device for performing the bonding by the single facer and the double facer arranged in series in the horizontal direction, the device can be spatially constructed efficiently and the device length can be shortened. It will be possible. In addition, the single-stage sheet manufactured in the first pass line is
The second pass line, which is formed by folding back the first pass line, is immediately attached to the front liner. Therefore, as in the conventional apparatus, the back liner and the core that have been once heated are made into a single-stage sheet, and then the single-stage sheet is again formed. It is not necessary to heat with a preheater.

Therefore, according to the double-sided corrugated board laminating apparatus of the present invention, the apparatus can be made compact,
There is an advantage that the sheet materials can be bonded efficiently.

[Brief description of drawings]

FIG. 1 is a schematic side view showing the configuration of a double-sided corrugated board sheet bonding apparatus as a first embodiment of the present invention.

FIG. 2 is a schematic side view showing a configuration of a double-sided corrugated board sheet bonding apparatus according to a second embodiment of the present invention.

FIG. 3 is a schematic side view showing an overall configuration of a conventional corrugated board sheet manufacturing apparatus.

FIG. 4 is a schematic diagram showing a configuration of a single facer of a corrugated board sheet manufacturing apparatus.

FIG. 5 is a schematic diagram showing a configuration of a double facer of the corrugated board sheet manufacturing apparatus.

[Explanation of symbols]

10 Back liner preheater 12 Core preheater 14 Table liner preheater 17 Slitter Scorer 18 cut off 19 Stacker 20 Back liner 21 Core 22 single-sided sheet 23 Table liner 24 Cardboard sheet 25 Cardboard sheet (product) 50 Laminating device 51A, 52A gluing device 52A First stage roll 52B Second stage roll 53,54 Pressure belt unit 53 'Pressure belt mechanism 53A, 53B, 54A, 54B Belt roll 53C, 53C 'pressure belt 55 Hot plate (heating means) 56 Pressurizing device (pressurizing means) 58 sound barrier 101,121,141A, 141B heating roll P1 First pass line P2 Second pass line S1 Back liner mill roll stand S2 Middle core roll stand S3 table liner mill roll stand M1 back liner mill roll M2 center core mill roll M3 table liner mill roll

Claims (8)

[Claims] 1. A double-sided corrugated cardboard sheet comprising a back liner and a double-sided corrugated sheet obtained by bonding the cores stacked on each other with glue to form a single-sided sheet, and bonding the front liner to the center side of the single-sided sheet with glue. In the laminating device, a peripheral surface is formed in a wavy shape, arranged in a meshed state, and cooperates with each other at the meshing portion to carry out the middle core, and a first stage roll and a second stage roll; A belt that runs in synchronism with the sheet material while forming a path line of the sheet material of the front liner, the core, and the back liner; and a belt roll around which the belt is wound,
As a path line for the sheet material, a first path line on which the back liner and the core run, and a second path on which the one-step sheet and the front liner run by folding back the first path line And a belt mechanism that abuts the first stage roll under pressure with the first pass line, and the belt mechanism opposes the second pass line. Provided with a heating means and a pressing means for pressing the belt to the heating means, and in the first pass line, the middle core and the back liner rolled by the step roll are provided. The belt and the first corrugating roll are sandwiched and bonded to each other to form the one-sided sheet, and the front liner and the one-sided sheet are formed by the pressing means on the second pass line. Apply pressure to the heating means via the belt A double-sided corrugated board laminating apparatus, characterized in that the double-sided corrugated board is laminated to form the double-sided corrugated board. 2. The belt mechanism comprises a first horizontally arranged first belt mechanism.
And a second unit, wherein each of the first unit and the second unit is configured to include a pair of belt rolls and a loop belt wound around the belt rolls. The belt of the first unit abuts the first corrugating roll under pressure at the first pass line, and the belt of the second unit moves at the second pass line. The double-sided corrugated board laminating apparatus according to claim 1, wherein the heating means applies a pressure to the heating means. 3. The belt mechanism comprises a pair of belt rolls and a loop-shaped belt wound around the belt rolls, wherein the belt has the first pass line and the first pass line. The double-sided corrugated board sheet according to claim 1, wherein the heating means is pressed by the pressing means in the second pass line while being in contact with the corrugated roll in a pressurized state. apparatus. 4. The double-sided corrugated board laminating apparatus according to claim 1, wherein the heating means is a steam heating type. 5. The double-sided corrugated board sheet bonding apparatus according to claim 1, wherein the heating means is a dielectric heating type. 6. The pressurizing means includes a pressurizing bar for pressurizing the front liner and the one-sided sheet to the heating means via the belt, and an actuator for advancing and retracting the pressurizing bar with respect to the belt. The double-sided corrugated board sheet bonding apparatus according to any one of claims 1 to 5, wherein 7. The pressurizing means is provided with an air ejecting means for pressurizing the front liner and the one-sided sheet against the heating means by means of the jetted air through the belt. The device for laminating double-faced corrugated board sheets according to any one of claims 1 to 5. 8. A soundproof wall is provided so as to cover the belt mechanism and the corrugated rolls.
A double-sided corrugated board laminating apparatus according to any one of items 1 to 7.