JPH09207249A - Method for gap adjustment of single faced corrugated fiberboard manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attempt improvement of efficiency while an operation is simplified by a method wherein respective gaps between two press rolls and a fluted roll are respectively set according to a combination of center core paper and a liner. SOLUTION: In a single faced corrugated fiberboard manufacturing apparatus equipped with two press rolls, a first combination of center core paper 16 and a liner 26 is supplied to the apparatus, and a first gap G1 between a first press roll 34 and a second fluted roll 14, and a second gap G2 between a second press roll 36 and the second fluted roll 14 are preliminarily determined. For a second combination,..., a Nth combination, each corresponding center core paper and liner are supplied to the apparatus, and the first gap and the second gap are preliminarily determined. When the combination of the center core paper and the liner corresponds to any one of the Ist,..., Nth combinations in manufacturing, the first press roll 34 and the second press roll 36 are transferred to the second fluted roll 14 based on a numerical value of the first and the second gaps which are preliminarily determined, and the first gap and the second gap which are concerned with the specific combination are set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gap adjusting method for a single-sided corrugated board manufacturing apparatus, and more specifically, it manufactures a single-sided corrugated board by attaching a liner to a corrugated core paper formed between two corrugated rolls. In doing so, using a single-faced corrugated board manufacturing apparatus provided with two press rolls that press the core paper and the liner to one of the corrugated rolls, the first press roll located on the upstream side in the liner supply direction and the downstream position on the downstream side Regarding the second press roll to be used, a gap adjusting method for a single-sided corrugated board manufacturing apparatus, in which the gap between each press roll and the corrugated roll facing each other can be set to an optimum value according to the combination of the core paper and the liner. Is.

[0002]

2. Description of the Related Art An apparatus for producing a single-faced corrugated cardboard in which a liner is attached to the corrugated top of a corrugated core paper (so-called single facer) is a first type in which corrugated steps are provided on respective circumferential surfaces. A corrugating roll and a second corrugating roll are arranged in a vertical relationship while interlocking with each other in the corrugated portion so as to be capable of different rotations. It is designed to be pressed. That is, the core paper is supplied between the first-stage roll and the second-stage roll, and a required corrugated step portion (flute) is formed when passing between the both rolls. A starch-based paste is applied to the step top of the obtained waveform by a sizing roll provided in a sizing mechanism. Further, a liner is supplied from the opposite side of the core paper through a press roll, and the liner is bonded between the press roll and the second-stage roll while pressing the liner on the step top of the core paper to form a single-sided corrugated board. Manufactured.

The press roll used in the single-sided corrugated board manufacturing apparatus is a metal roll having a large diameter, and the roll is the second roll.
It faces the corrugated rolls with a required gap.
Then, by applying a required nip pressure to the core paper and the liner passing between the second-stage roll and the press roll, the core paper and the liner are pasted together at the corrugated top of the corrugated medium. It is a thing. In this case, since the outer peripheral surface of the second-stage roll is formed with a stepped portion having a continuous mountain portion and a valley portion at a required pitch, the roll pressure contact position is from the mountain portion to the valley portion or from the valley portion to the mountain portion. The center of rotation of both rolls changes slightly when moving to. As a result of the rotation centers of both rolls being periodically moved closer to and separated from each other as the two rolls are rotated in this way, large vibration and high noise are generated during the production of single-faced corrugated board, which is a cause of serious damage to the factory environment. . Further, due to the fact that the centers of rotation of both rolls periodically come close to and away from each other, the crests of the second-stage roll periodically come into contact with the surface of the press roll to give an impact (so-called hammer phenomenon). Therefore, there is a problem in that the liner surface of the manufactured single-sided corrugated board is provided with a line-shaped pressing strip (so-called press mark) in the lateral direction at the pitch of the mountain portion of the second-stage roll, which lowers the commercial value.

The above-mentioned various problems are inevitable because the conventional single-sided corrugated board manufacturing apparatus presses the core paper and the liner only at one point where the second-stage roll and the press roll face each other. This is because the pressure must be set to a large value. So, as a means to deal with this,
As shown in FIG. 4, the two press rolls 34 and 36 are arranged close to each other in the circumferential direction of the second stage roll 14.
It has been proposed to press the core paper 16 and the liner 26 between the corrugated roll 14 and the press rolls 34 (36) to bond them together. That is, the first press roll 34 located on the upstream side in the feeding direction of the core paper 16 fed along the outer peripheral surface of the second roll 14 performs the initial adhesion between the core paper 16 and the liner 26. Then, the second core roll 16 is located on the downstream side of the core paper 16 in the feeding direction.
6 and the liner 26 are completely bonded. In FIG. 4, reference numeral 12 is the second stage roll 1.
Reference numeral 22 designates a first-stage roll arranged so as to oppose to No. 4 and designates a gluing mechanism, respectively.

In the single-faced corrugated board manufacturing apparatus in which two press rolls are arranged in this way, if the total sum of the nip pressures generated in the two press rolls is equal to the nip pressure generated in the conventional one press roll. It will be good. Therefore 2
In a device equipped with a book press roll, the nip pressure of each press roll can be set to a small value.
Vibration and noise caused by the nip pressure between the corrugated roll and each press roll can be reduced, and the press mark generated on the liner side of the single-faced corrugated board can be suppressed to a small value, which is a beneficial advantage. There is.

[0006]

As described above, in the single-faced corrugated board manufacturing apparatus using two press rolls, in order to reliably bond the core paper and the liner, the core paper is not provided between the press rolls. Because the liner and the free state
It is necessary to surely perform the initial adhesion between the core paper and the liner by the first press roll on the upstream side. Regarding this point, generally, the nip pressure on the first press roll is set to a large value,
First, the first press roll on the upstream side surely bonds the core paper and the liner to each other, and then the second press roll on the downstream side secondarily bonds the core paper and the liner to achieve good bonding. It is empirically known to be done. In this case, the magnitude of the nip pressure generated between the corrugating roll and the press roll depends on the magnitude of the gap between the corrugating roll and the press roll. Therefore, in the above example, the first roll for the second roll
The first gap G ₁ of the press roll is set smaller than the second gap G ₂ of the second press roll with respect to the second stage roll (first gap G ₁ <second gap G ₂ ). However, the total sum of the nip pressures of both press rolls is set in a range that is equivalent to the nip pressure when one press roll is used.

By the way, there are many types of core papers and liners that make up a single-sided corrugated board by laminating them, and there are many kinds of paper thickness and paper quality. The gap between the first press roll (first gap G ₁ ) facing the second-stage roll and the gap between the second press roll facing the second-stage roll (second gap G ₂ ) is finely adjusted depending on whether it is supplied. It was found from the results of a number of test runs conducted by the applicant in-house that it was necessary to do so. That is, the first gap G ₁ <the second gap G ₂ described above is not necessarily optimal depending on the combination of the core paper and the liner, which is a single-sided corrugated board, and the first gap G ₁ = the second gap G ₂ Is most appropriate, and the first gap G ₁ > the second gap G ₂ is optimal.
Further, for example, even within the same range of the first gap G ₁ <the second gap G ₂ , there is a slight difference in the paper thickness between the core paper and the liner supplied to the apparatus even within the rated range. It has also been confirmed that the core paper and the liner cannot be properly bonded to each other unless the gap G of each press roll is adjusted individually.

Regarding this point, it should be noted that there are various grades of core paper and liner with respect to paper thickness and paper quality. For example, liners are roughly classified into jute liners and kraft liners. The former, jute liners, use unbleached kraft pulp for the surface layer of the paper, and the middle layer and the back side are mainly made of recovered waste paper. The latter kraft liner does not use waste paper, but is made with new kraft pulp and semi-chemical pulp (SCP) on both sides. Therefore, the paper thickness, that is, the basis weight, differs depending on which type of liner is used. Here, the grammage is the weight of the paper in a certain area, and the weight of the paper of 1 m ² is represented by g (metric grammage). As mentioned above,
It is manufactured by attaching a liner to a core paper on which a corrugation of a required pitch is formed. A considerable number of combinations of the core paper and the liner can be considered based on user specifications. Even though the core paper and the liner have many types as described above, there is a considerable variation in the paper thickness correspondingly. Unless you finely adjust the gap of the press roll individually,
This means that it is not possible to obtain a single-sided corrugated board with the optimum lamination. Therefore, when manufacturing the single-faced corrugated board, the operator changes the type of the core paper and / or the liner with the order change, and therefore the first gap G ₁ of the first press roll and the second press roll of the second press roll in the single-faced corrugated board manufacturing apparatus. It requires a complicated work for finely adjusting the gap G _2, and it takes a long time to start the operation in the next order, resulting in a problem that the production efficiency is lowered.

[0009]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems inherent in the above-mentioned single-faced corrugated board manufacturing apparatus equipped with two press rolls, and is a liner supply method. So that each gap between the first press roll located on the upstream side and the second press roll located on the downstream side with the corrugated roll facing each other can be set to an optimum value according to the combination of the core paper and the liner. Thus, it is an object of the present invention to simplify the work of the operator, shorten the time required for switching when changing the order, and improve the production efficiency of single-sided corrugated board.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and preferably achieve the intended purpose, the present invention provides a first stage roll having a corrugated step portion on its outer peripheral surface, and this corrugated step portion. A corrugated step portion that meshes with the outer peripheral surface is formed, and a second corrugated roll that continuously forms a desired corrugation on the core paper that is passed through the interlocking portion of these corrugated step portions, and this corrugated formation is performed. A gluing mechanism for gluing to the top of the core paper, and a first press roll located upstream of the core paper fed along the second roll and facing the second roll. A second press roll located on the downstream side of the core paper fed along the second-stage roll and facing the second-stage roll. These two press rolls and the second-stage roll Manufacture of single-sided corrugated board with liner pressed against the corrugated top of the core paper between the rolls In location, the first gap the first press roll is formed for the second-stage roll, a second press roll is formed for the second stage rollers 2
When individually adjusting the gap of, regarding the core paper and the liner to be laminated as a single-sided corrugated board, categorize the combination of core paper and liner considered based on user specifications, and The total thickness of the core paper and the liner, the total thickness of the core paper and the liner according to the second combination, and the Nth combination. The sum of the thickness of the core paper and the thickness of the liner is individually calculated, and the core paper and the liner according to the first combination having the total thickness are supplied to the apparatus to supply the first press roll and the second press roll. A second combination having a total thickness, which determines the most appropriate first gap in the corrugated rolls, and also determines the most appropriate second gap in the second press roll and the second corrugated roll, ... Total. Nth union with thickness Also regarding the case, similarly, the most suitable first gap and second gap are correspondingly determined by supplying to the device, and the most appropriate first gap and the second gap corresponding to the first to Nth combinations are determined. The gap of No. 2 is stored as numerical data in the storage unit provided in the control unit, and in the subsequent single-sided corrugated board manufacturing operation, the control unit is instructed which one of the typified combinations is to be operated, and Numerical data relating to the optimum first and second gaps stored for each combination is called from the storage unit, and based on this numerical data, the first press roll and the second press roll are set to the second stage roll. It is characterized in that it is adjusted and moved.

Similarly, in order to solve the above-mentioned problems and preferably achieve the intended purpose, another invention of the present application is a first-stage roll having a corrugated step portion formed on an outer peripheral surface thereof, and a mesh with the corrugated step portion. A corrugated step portion is formed on the outer peripheral surface, and a second corrugated roll having a desired corrugation continuously formed so as to mesh with the corrugated step portion, and a corrugated portion formed between both rolls to form a corrugated step. A gluing mechanism for gluing the corrugated top portion of the core paper, and a gluing mechanism located on the upstream side of the core paper fed along the second-stage roll.
A first press roll facing the stage roll and a second press roll located on the downstream side of the core paper fed along the second stage roll and facing the second stage roll;
In a single-sided corrugated board manufacturing apparatus in which a liner is pressure-bonded to the corrugated top of the core paper between the two press rolls and the second stage roll, the core paper according to the first combination And a liner, a core paper and a liner according to the second combination, ... A core paper and a liner according to the Nth combination are typified, and a core paper and a liner according to the first combination are provided. Is supplied to the single-sided corrugated board manufacturing apparatus to predetermine the first gap between the first press roll and the second stage roll and the second gap between the second press roll and the second stage roll, and then the second combination. ... For the Nth combination, supply the corresponding core paper and liner to the single-sided corrugated board manufacturing apparatus,
When the first gap and the second gap are determined in advance and the single-faced corrugated board is manufactured by the combination of the core paper and the liner typified by any of the first to N-th, first, Based on a predetermined numerical value of the first and second gaps, the first
The press roll and the second press roll are moved toward and away from the second-stage roll to thereby set the first gap and the second gap relating to the categorized specific combination. Is characterized by.

Further, in order to solve the above-mentioned problems and preferably achieve the intended purpose, still another invention of the present application is to provide a first-stage roll having a corrugated step portion on an outer peripheral surface, and a corrugated step portion. A corrugated step portion that meshes is formed on the outer peripheral surface, and a second corrugated roll in which the required corrugation is continuously formed so as to mesh with these corrugated step portions, and a corrugated shape is formed by passing between both rolls. A gluing mechanism for gluing to the corrugated top of the core paper, and a first press roll located upstream of the core paper fed along the second-stage roll and facing the second-stage roll. , The second
A second press roll located downstream of the core paper fed along the corrugated roll and facing the second corrugated roll, and between the two press rolls and the second corrugated roll. In a single-sided corrugated board manufacturing apparatus in which a liner is pressure-bonded to the corrugated top portion of the core paper, the core paper and liner according to the first combination are supplied to the single-sided corrugated board manufacturing apparatus, and The first gap between the press roll and the second stage roll and the second gap between the second press roll and the second stage roll are determined in advance, and the second combination ...
Also for the Nth combination, the corresponding core paper and liner are supplied to the single-faced corrugated board manufacturing apparatus to predetermine the first gap and the second gap, and when manufacturing the single-faced corrugated board, The first combination of core paper and liner is ...
When any of the Nth combination is applicable, the first press roll and the second press roll are set to the second stage roll based on the previously determined numerical values of the first and second gaps. It is characterized in that the first gap and the second gap relating to a specific combination are set by moving them toward and away from each other.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a gap adjusting method for a single-sided corrugated board manufacturing apparatus according to the present invention will be described below with reference to the accompanying drawings with reference to preferred embodiments. (Schematic configuration of single-sided corrugated board manufacturing apparatus) FIG. 2 shows a schematic configuration of a single-sided corrugated board manufacturing apparatus in which the gap adjusting method according to the present invention is implemented.
A first-stage roll 12 having a corrugated step on its outer peripheral surface and a second-stage roll 14 having a corrugated step on its outer peripheral surface are rotatably supported. The rotation shaft of the first-stage roll 12 is positioned obliquely above the rotation shaft of the second-stage roll 14, and the respective corrugated steps are meshable via a core paper 16 (described later). Also, directly below the first stage roll 12,
Also, a glued roll 18 is provided diagonally below the second stage roll 14.
A gluing mechanism 22 including a doctor roll 20 is provided.

The core paper 16 is a raw paper supply source on the left side in FIG.
(Not shown) through a plurality of guide rolls 24 to a region where the first stage roll 12 and the second stage roll 14 mesh with each other, and pass through the region to form a required stage. The core paper 16 on which the step is formed is pasted by the pasting mechanism 22 on the top of the step, and then the feeding direction is reversed along the outer peripheral surface of the second step roll 14 to go upward. Further, the liner 26 is supplied from the raw paper supply source (not shown) on the right side in FIG.
The core paper 16 is fed to the upper side in a state of being joined to the stepped portion to which the core paper 16 has been glued. High temperature steam from a supply source (not shown) also circulates inside the guide roll 24, thereby heating the core paper 16.

The gluing mechanism 22 is opened to the side of the first-stage roll 12 and the second-stage roll 14 and has its opening.
It is housed in a pressurizing chamber 32 in a substantially hermetically sealed state in which the space between the first stage roll 12 and the seal roll 30 arranged immediately below the second stage roll 14 is sealed. In the pressurizing chamber 32,
Compressed air is supplied from a supply source (not shown), and the pressure inside the room is set to be slightly higher (for example, 0.15 atm). In this case, the outer surface side of the second-stage roll 14 facing the pressurizing chamber 32 is at atmospheric pressure due to circumferential grooves (not shown) formed at predetermined intervals in the axial direction. Therefore, the core paper 16 that has been step-formed by passing between the first and second stage rolls 12 and 14 has the pressure chamber 32 and the second stage roll 1
Due to the pressure difference with the outer surface of 4, the stable transfer is achieved while being pressed against the roll surface. The core paper 16 which is turned upside down along the outer surface of the second-stage roll 14 and is directed upward has two press rolls 3 described later.
It is bonded to the liner 26 via 4, 36.

Two press rolls 3 for sticking the core paper 16 and the liner 26 together with the second roll 14 on the side opposite to the first roll 12 with the second roll 14 interposed therebetween.
4, 36 are arranged apart from each other in the circumferential direction of the second stage roll 14. That is, as shown in FIG. 2, the first press roll 34 on the paper feed side is rotatably disposed at the lower position on the outer peripheral surface of the second stage roll 14 and near the feeding path of the liner 26. The core paper 16 fed along the outer peripheral surface of the second roll 14 and the liner 26 attached to the core paper 16 are pressed against the second roll 14. A second press roll 36 on the paper discharge side is rotatably arranged at an upper position on the outer peripheral surface of the second-stage roll 14 and close to the feeding path of the liner 26. The core paper 16 and the liner 26 fed along the outer peripheral surface of the sheet are pressed against the second-stage roll 14.

That is, the first press roll 34 and the second
The press rolls 36 are arranged on the outer peripheral surface of the second stage roll 14 and close to the liner feeding path in a vertical relationship. The liner 26 that has passed through the preheater 28 is first supplied to the area where the core paper 16 is bonded along the outer peripheral surface of the first press roll 34 on the paper feed side, and then the second press roll on the paper discharge side. It is supplied to the bonding area between the roll 36 and the second-stage roll 14. In the embodiment, the press rolls 34 and 36 and the preheaters 28 and 28 are arranged on a moving frame 38 which is configured to be movable with respect to the frame body 10 on which the corrugating rolls 12 and 14 are arranged. Rolls 34,3
6 can be positioned at an operating position close to the second-stage roll 14 and at a retracted position separated from the second-stage roll 14.

Both the press rolls 34 and 36 are connected to a high temperature steam supply source (not shown), and the high temperature steam is circulated in the rolls to raise the temperature of the roll surface to a required temperature. Then, the liner 26 that comes into contact with the press rolls 34 and 36 is heated, and the core paper 16 and the liner 2 are heated.
Heat is applied to the portion to be glued with 6 to accelerate the gelation of the starch-based glue and ensure the adhesion with the core paper 16. The first press roll 34 is configured to come into contact with the seal roll 30 when the moving frame 38 is positioned at the operating position so that the pressurizing chamber 32 can be held in a sealed state.

The two press rolls 34, 36 are brought close to and separated from the second stage roll 14 by an independent eccentric mechanism 40, and appropriate gaps (first gap G ₁ , second gap G ₂ ) are provided therebetween. It can be set. This eccentric mechanism 40
For example, since the structure shown in FIG. 3 is adopted, the eccentric mechanism 40 on the first press roll 34 side will be described. That is, the rotating shaft 34 of the first press roll 34
The a is rotatably inserted and fitted through a bearing 44 into a through hole 42a of a race 42 that is rotatably supported by the moving frame 38. The race 42 is integrally formed with a fan-shaped gear 42b on a part of the peripheral surface thereof, and the center P ₁ (first press roll 34) of the through hole 42a is formed.
The center of the rotary shaft 34a) and the center P ₂ race outer peripheral surface are designed to deflect by a required dimension x. Fan gear 4
2b meshes with a pinion gear 46 that is rotatably supported on the moving frame 38, and this pinion gear 46 is connected to a motor 48 arranged on the moving frame 38 so that a required rotation is provided. There is.

That is, when the motor 48 is driven to rotate the pinion gear 46, the fan gear 42b meshing with the pinion gear 46 rotates together with the race 42. At this time, the center P of the outer peripheral surface of the race 42 in which the fan-shaped gear 42b is formed
₂ and the center P _{1 of the} through hole 42a are deviated by the required dimension x as described above, so that the first press roll 34 moves eccentrically as the race 42 rotates. Thereby, the nip pressure between the first press roll 34 and the second stage roll 14 can be adjusted by changing the axial distance between the first press roll 34 and the second stage roll 14. The eccentric mechanism 40 is
The first press roll 34 is arranged on both sides in the axial direction, and the pair of motors 48, 48 are synchronously driven to move the first press roll 34 eccentrically.

FIG. 1 shows a control block of a single-faced corrugated board manufacturing apparatus for carrying out the gap adjusting method according to the present invention. The central processing unit 50 thereof has a control unit 52 and an arithmetic unit 54.
And a storage unit 56 and an input / output unit 58. The input / output unit 58 is connected to an input unit (for example, a keyboard) 60 for inputting various kinds of information and commands from the outside via an input interface 62, and is also connected to a motor control unit 65 via an output interface 64. . Further, the motor control unit 65 is connected to the pair of motors 48, 48 to be controlled. Further, the input / output unit 58 is connected via a separate interface 68 to a display 66 for visualizing various data stored in the central processing unit 50 and data such as commands and numerical values inputted from the outside.

(Regarding Procedure for Implementing Gap Adjustment Method) The above-mentioned control unit 52 of the central processing unit 50 is adapted to receive the data determined by the following procedure via the input section 60. That is, as described above, the core paper 16 and the liner 2 to be laminated as a single-sided corrugated board are used.
There are many 6 according to user specifications. However, the number is not limited, and there is a limit to the general and rational combination of the two. Therefore, for a combination of the core paper 16 and the liner 26 which is considered in advance, a work for typifying the combination is performed. For example, if the core paper 16 that is frequently used is classified by paying attention to its unique paper thickness,
280 g / m ² , 320 g / m ² , 34
One of them is 0 g / m ² . So 280g for convenience
/ thickness M ₁ of the core paper in a m ^2, thickness M ₂ the corrugating medium in the 320 g / m ^2, it is assumed that to display the core paper in a 340 g / m ² in thickness M _3. Similarly, the liner 26 which is frequently used is classified into 270 g / m ² , 290 g / m ² and 330 g / m ² by focusing on its unique paper thickness. Therefore, for convenience, a liner of 270 g / m ² has a thickness L ₁ and a liner of 290 g / m ² has a thickness L ₂ , 330 g / m ²
Shall display of the liner at a thickness L _3.

As described above, the paper thickness of the core paper is set to M ₁ , M ₂ ,
M _3, when the sheet thickness of the liner and _{L 1, L 2, L 3} , the combination of the corrugating medium and the liner in the single-faced corrugated board is, M ₁ to L _1, L _2, 3 two combinations of L _3, L ₁ , L ₂ , L for M _{2
Three combinations} of 3 are classified into three combinations of L ₁ , L ₂ , and L ₃ with respect to M ₃ (total of 9 combinations). In the individual combinations determined by this categorization work, for example, the total thickness T ₁ of the thickness M ₁ of the core paper 16 and the thickness L _{1 of the} liner 26 relating to the _{first combination} is obtained. Also for the second combination, the total thickness T ₂ of the thickness M ₂ of the core paper 16 and the thickness L _{2 of the} liner 26 is calculated. Similarly, for the third combination, the thickness M _{3 of the} core paper 16 and the liner 2 are used.
The thickness T ₃ obtained by adding the thicknesses L ₃ of 6 is obtained. Similarly thereafter, the thickness M of the core paper 16 according to the final ninth combination
_The total thickness T ₉ of ₉ and the thickness L _{9 of the} liner 26 is obtained.

[0024] Then, the first having a total thickness T ₁ of the said
The core paper 16 and the liner 26 according to the combination of No. 1 and No. 2 are supplied to the single-sided corrugated board manufacturing apparatus shown in FIG. At this point in time, the first gap G ₁ of the first press roll 34 and the second gap G ₂ of the second press roll 36 are not necessarily set to the optimum values, and an appropriate value depending on the experience and intuition of the operator. The value is set. By performing this test operation, the most appropriate first gap G ₁ and second gap G ₂ in the first combination relating to the total thickness T ₁ are obtained.
To determine. Further, regarding the second combination having the total thickness T ₂ , the most appropriate first gap G ₁ and second gap G ₂ are determined by performing the trial operation in the same manner. Similarly, for the third to ninth combinations, a trial operation is performed to optimize the first gap G _{1 for each combination.}
And the second gap G ₂ is determined.

Optimal first gap G ₁ and second gap G ₁ corresponding to the first to ninth combinations thus determined
The gap G ₂ is stored in the storage unit 56 of the control unit 52 shown in FIG.
To be stored as numerical data via the input unit 60.
That is, in the storage unit 56, the optimum numerical data of the first gap G ₁ and the second gap G ₂ in the first combination are stored as, for example, the first parameter, and the call command is input as necessary in the input unit 62. By supplying the numerical data to the motor control section 65 from the input / output section 58 and the output interface 64. Similarly also for the second set ninth combination from alignment, optimal first gap G ₁ and a second gap G ₂ of numerical data corresponding to each are stored in the storage unit 56 as the second parameter to ninth parameter It is supposed to be done. Therefore, the storage unit 56
With respect to the second to ninth parameters stored in the second parameter to the ninth parameter, if necessary, a call command is given to the input section 62 so that the second to ninth numerical data are transferred from the input / output section 58 and the output interface 64 to the motor control section. Called to 65.

(Automatic Setting of Optimal Gap in Actual Operation) As described above, the optimum numerical data of the first gap G ₁ and the second gap G ₂ corresponding to the first to ninth combinations are The first parameter to the ninth parameter are stored in the storage unit 56 so as to be freely callable. Therefore, the automatic setting of the optimum gap for both press rolls when actually starting the production of single-sided corrugated board will be described. Regarding the single-sided corrugated board, as described above, there are specifications related to a large number of orders in response to user requests. Therefore, before starting the operation of the single-faced corrugated board manufacturing apparatus, the type of the single-faced corrugated board to be produced is determined in the order of the day. For example, the third type in which the core paper of thickness M ₁ and the liner of thickness L ₃ are combined is the first order, and then the eighth type in which the core paper of thickness M ₃ and the liner of thickness L ₂ are combined. Is the second order, and the thickness is M ₂
It is assumed that the fifth type in which the core paper and the liner having the thickness L ₂ are combined is the third order. At this time, the control unit 52 is instructed to operate in the order of the third type → the eighth type → the fifth type via the input unit 60 in the control block of FIG.

As a result, the control unit 52 stores the optimum numerical data of the first gap G ₁ and the second gap G ₂ in the order of the third parameter, the eighth parameter and the fifth parameter corresponding to these types. It is called from the unit 56 and given to the motor control unit 65 via the input / output unit 58 and the output interface 64. Thereby, the motor control unit 65 controls the motors 48, 48 in accordance with the numerical data belonging to the third parameter, for example, when manufacturing the single-sided corrugated board according to the third type, and controls the second-stage roll 14 and each corresponding first. The optimum first gap G ₁ and second gap G ₂ are automatically set between the first press roll 34 and the second press roll 36. When the production of the single-sided corrugated board in the order belonging to the third type is completed, the process shifts to the next order according to the eighth type, and the motor control unit 65 also causes the eighth order.
Motor 48,4 according to the numerical data belonging to the parameter
8 is controlled to automatically give the optimum first gap G ₁ and second gap G ₂ to both press rolls 34 and 36. Also the eighth
When the production of the single-faced corrugated board on the order belonging to the type 5 is completed, the process shifts to the next order on the type 5 and the motor control unit 65 controls the motors 48, 48 according to the numerical data belonging to the fifth parameter. As a result, the optimum first gap G ₁ and second gap G ₂ for producing the fifth type of single-sided corrugated board are automatically set on both press rolls 34, 36.

As described above, the first gap G ₁ between the first press roll 34 and the second stage roll 14 and the second press roll 36 and the second stage based on the numerical data relating to the respective parameters stored in the control unit in advance. The second gap G ₂ in the roll 14 is individually adjusted. In this case,
As described above, the core paper 16 and the liner 26 are classified into required paper thickness categories according to the metric basis weight. However, there is a slight difference in paper thickness even within the relevant categories. Of course. For this reason, in the actual production of single-sided corrugated board, even if the gap is adjusted to the optimum value obtained by the typification work described above and the trial operation corresponding to it, the produced single-sided corrugated board will have more gaps due to the difference in the paper thickness. It may be better to adjust. in this case,
If necessary, the motor 4 may have a more appropriate gap.
The first press roll 34 and the second press roll 8 and 48 are finely moved.
The gap of the press roll 36 is corrected, and the gap value changed by this correction is input to the storage unit 56 of the control unit 52 as numerical data. As a result, the storage unit 5
In 6, the memory regarding the optimum gap data related to the parameter is updated, and from the next time, more appropriate gap adjustment will be automatically achieved.

(Regarding the gap adjusting method according to the second invention of the present application) In the gap adjusting method according to the first invention described above, the thickness M _{1 of the} core paper according to the _{first combination} and the liner The total thickness T ₁ of the thickness L ₁ and the total thickness T 2 of the core paper thickness M ₂ and the liner thickness L ₂ according to the _{second combination} , ... Core paper thickness Mn
The total thickness Tn of the liner and the thickness Ln of the liner is individually calculated, and the core paper and liner according to the first combination ... Nth combination are sequentially supplied to the single-sided corrugated board manufacturing apparatus, and each group is supplied. The most suitable first gap G ₁ and second gap G ₂ for the matching.
It required work to determine. However, even if the core paper and liner have the same thickness (metric basis weight),
For example, in the case of a paper made of virgin pulp and a paper made of recycled paper, the size of the gap required for the pressure contact between the corrugated roll and the press roll slightly changes.
In such a case, if the paper thickness of the core paper or liner is used as a control function as in the first invention, the automatically set first gap G ₁ and second gap G ₂ will not match the current situation. I knew that.

Therefore, as a solution capable of suitably dealing with this, the following gap adjusting method according to the second invention is proposed. That is, prior to the production of single-sided corrugated board, the first
The core paper 16 and the liner 26 relating to the combination, the core paper 16 and the liner 26 relating to the second combination, ... To do. After performing the classification work in this way, the operator supplies the core paper 16 and the liner 26 according to the first combination to the single-sided corrugated board manufacturing apparatus, and in this case, the first press roll 34 and the second stage roll. First gap G at 14
_1, and the second gap G ₂ in the second press roll 36 and the second stage roll 14 is determined in advance. Similarly for the second combination ... Nth combination, the corresponding core paper 16 and liner 26 are supplied to the single-sided corrugated board manufacturing apparatus,
The first gap G ₁ and the second gap G _{2 in each of them} are determined in advance.

When manufacturing a single-sided corrugated board, some combination of the core paper 16 and the liner 26 is selected, and the combination according to this selection is the first. When the Nth combination is used, the numerical values of the first and second gaps previously determined in the combination are used. For example, in the case of using the core paper 16 and the liner 26 related to the second combination in this order, based on the numerical values of the first and second gaps which are predetermined for the second combination. The motors 48, 48 are finely moved to move the first press roll 34 and the second press roll 36 toward and away from the second stage roll 14. As a result, the categorized specific combination, that is, the first gap G ₁ and the second gap G ₂ related to the second combination in this example are preferably automatically set.

(Regarding the gap adjusting method according to the third invention of the present application) The second invention described above is different from the first invention in that the thickness of the core paper or liner is a function of the control. The present invention relates to a method capable of automatically setting appropriate first gap G ₁ and second gap G ₂ regardless of the above. Therefore, in the first and second aspects of the invention, it is necessary to store the first gap G ₁ and the second gap G ₂ according to each predetermined combination in the storage unit of the control unit. It should be said that this is a very suitable response to the current situation where most single-sided corrugated board manufacturing apparatuses are now centrally controlled by a computer. However, not all users rely on advanced computer control, and there are quite a few cases where the control of the single-faced corrugated board manufacturing apparatus is performed based on the experience and intuition of each operator. In such a case, the thickness of the core paper or the liner cannot be used as a control function, and it is not possible to rely on the centralized control management of the computer.

Therefore, as a solution that can deal with this,
The following gap adjusting method according to the third aspect of the invention is proposed. That is, the core paper 16 and the liner 26 according to the first combination are supplied to the single-faced corrugated board manufacturing apparatus, and the first gap G between the first press roll 34 and the second stage roll 14 is supplied.
₁ , the second gap G ₂ between the second press roll 36 and the second stage roll 14 is determined in advance. Similarly, for the second combination ... Nth combination, the corresponding core paper 16
The liner 26 and the liner 26 are supplied to the single-sided corrugated board manufacturing apparatus to predetermine the first gap G ₁ and the second gap G ₂ . The numerical values of the first gap G ₁ and the second gap G ₂ thus determined corresponding to each combination are recorded, for example, as an operator's refrain. This copy may be a notepad owned by the operator, or a notepad provided near the single-sided corrugated board manufacturing apparatus.

In the production of the single-sided corrugated board, the operator must select the combination of the core paper 16 and the liner 26 constituting the single-sided corrugated board to be produced from the first ...
-Check whether any of the Nth combinations is applicable. This may be by tracing the operator's personal memory, or by confirming the operator's aforesaid reserve. If it is found from this that any one of the first ... Nth combinations, the numerical values of the first and second gaps already determined for the particular combination are set to, for example, notepad or Check from notes like notes. Then this confirmed first
Based on the numerical values of the second gap and the second gap, the operator finely moves the motors 48, 48 by the manual operation,
The press roll 34 and the second press roll 36 are moved toward and away from the second stage roll 14. As a result, the first gap G ₁ and the second gap G ₂ related to the specific combination are set appropriately.

[0035]

As described above, according to the gap adjusting method for the single-faced corrugated board manufacturing apparatus according to the present invention, the first press roll located on the upstream side and the second press roll located on the downstream side in the liner supply direction. The respective gaps between the corrugated rolls facing each other can be set to optimum values according to the combination of the core paper and the liner. Therefore, it is possible to simplify the work by the operator, shorten the time required for switching when changing the order, and improve the production efficiency of single-sided corrugated board.

[Brief description of drawings]

FIG. 1 is a control block diagram adopted in a single-sided corrugated board manufacturing apparatus for carrying out a gap adjusting method according to the present invention.

FIG. 2 is a schematic configuration diagram of a single-faced corrugated board manufacturing apparatus capable of suitably implementing the gap adjusting method according to the present invention.

FIG. 3 is an explanatory diagram showing an eccentric mechanism for adjusting and setting the first gap and the second gap by moving the first and second press rolls close to and away from the second stage roll.

FIG. 4 is a schematic configuration diagram of a conventional single-faced corrugated board manufacturing apparatus including two press rolls according to a conventional technique.

[Explanation of symbols]

12 1st-stage roll 14 2nd-stage roll 16 Core paper 22 Gluing mechanism 26 Liner 34 1st press roll (paper feed side press roll) 36 2nd press roll (paper discharge side press roll) 52 Control unit 56 Storage unit G ₁ First gap G ₂ Second gap

Claims (4)

[Claims] 1. A first-stage roll (12) having a corrugated step portion formed on an outer peripheral surface thereof, and a corrugated step portion meshing with the corrugated step portion are formed on the outer peripheral surface of the corrugated step portion. Core paper
Second stage roll (14) that continuously forms the required corrugation on (16)
A gluing mechanism (22) for gluing the corrugated core paper (16) to the top of the corrugated core paper (16) and the core paper (16) fed along the second corrugated roll (14). A first press roll (34) located upstream and facing the second stage roll (14);
A second press roll (36) located downstream of the core paper (16) fed along the corrugated roll (14) and facing the second corrugated roll (14). Book Press Roll (34,3
In the single-faced corrugated board manufacturing apparatus, the liner (26) is pressure-bonded to the corrugated top portion of the core paper (16) between the second roll (14) and the second press roll (14). 34) forms a first gap (G ₁ ) with respect to the second stage roll (14), and the second press roll (36)
When individually adjusting the second gap (G ₂ ) formed by the second roll (14) with respect to the core paper (16) and the liner (26) to be laminated as single-sided corrugated board , Categorizing combinations of core paper (16) and liner (26) that can be considered based on user specifications, and thickness (M ₁ ) of the core paper (16) related to the _{first combination} and the liner (26). Thickness (L ₁ ), the total thickness (T ₁ ), the thickness (M ₂ ) of the core paper (16) and the liner (26) of the second combination.
(L ₂ ), total thickness (T ₂ ), ... Total thickness (Mn) of core paper (16) and thickness (Ln) of the liner (26) relating to the Nth combination. The core paper (16) according to the first combination having the total thickness (T ₁ ) obtained by individually calculating the thickness (Tn)
And the liner (26) are fed to the equipment, and the first press roll (34)
And the most appropriate first gap (G ₁ ) in the second roll (14)
And the most suitable second gap (G ₂ ) between the second press roll (36) and the second stage roll (14), and a second combination having a total thickness (T ₂ ), ... Total thickness
Regarding the Nth combination having (Tn), the most suitable first gap (G ₁ ) and second gap (G ₁ ) are also supplied to the device.
₂ ) is determined correspondingly, and the most appropriate first corresponding to these combinations of 1st to Nth is selected.
The gap (G ₁ ) and the second gap (G ₂ ) are stored as numerical data in the storage unit (56) provided in the control unit (52), and in the subsequent single-sided corrugated board manufacturing operation, any of the above types is used. The control unit (5
Instructing 2), the numerical data relating to the optimum first gap (G ₁ ) and the second gap (G ₂ ) stored for the combination is called from the storage unit (56), and the numerical data is stored. Based on the first press roll (34) and the second press roll
(36) A gap adjusting method for a single-sided corrugated board manufacturing apparatus, wherein the (36) is adjusted and moved with respect to the second-stage roll (14). 2. The first gap (G ₁ ) between the first press roll (34) and the second stage roll (14) and the second press roll (36) and the second stage roll (based on the numerical data). After individually adjusting the _second gap (G ₂ ) in 14), a correction is made to obtain a more appropriate gap if necessary, and the value of the gap changed by this correction is used as numerical data in the control unit ( Five
2. The gap adjusting method for a single-sided corrugated board manufacturing apparatus according to claim 1, wherein the storage unit (56) of 2) is input to update the storage in the storage unit (56). 3. A first-stage roll (12) having a corrugated step portion on the outer peripheral surface, and a corrugated step portion meshing with the corrugated step portion are formed on the outer peripheral surface, and are required to mesh with these corrugated step portions. The second-stage roll (14) in which the corrugation of
14) and a gluing mechanism (22) for gluing the corrugated top of the corrugated core paper (16) having a corrugated shape, and the second roll (1).
Located on the upstream side of the core paper (16) fed along 4),
A first press roll (34) facing the second stage roll (14)
And the core paper (1) fed along the second roll (14).
And a second press roll (36) located downstream of the second roll (14) and facing the second roll (14). These two press rolls (34, 36) and the second roll (14) ) With the corrugated top of the core paper (16), the liner (26) is pressure-bonded to the corrugated top to bond the core paper (16) with the core paper (16) according to the first combination. Liner (26) and second
The core paper (16) and the liner (26) related to the combination No. 1 and the core paper (16) and the liner (26) related to the Nth combination are classified into the first combination. The core paper (16) and the liner (26) are supplied to the single-sided corrugated board manufacturing apparatus, and the first gap (G ₁ ) between the first press roll (34) and the second stage roll (14) and the second The second gap (G ₂ ) between the press roll (36) and the second stage roll (14)
For the second combination ... Nth combination, the corresponding core paper (16) and liner (26) are supplied to the single-sided corrugated board manufacturing apparatus to produce the first gap ( G ₁ ) and the second gap (G ₂ ) are determined in advance, and the core paper (16) typified as any of the first to Nth.
When a single-faced corrugated board is manufactured by a combination of the liner (26) and the liner (26), the first press roll (34) and the second press roll (36) are determined based on the previously determined numerical values of the first and second gaps. Is moved toward and away from the second stage roll (14), thereby setting the first gap (G ₁ ) and the second gap (G ₂ ) related to the typified specific combination. A method for adjusting a gap in a single-sided corrugated board manufacturing apparatus characterized by the above. 4. A first-stage roll (12) having a corrugated step portion formed on the outer peripheral surface, and a corrugated step portion meshing with the corrugated step portion are formed on the outer peripheral surface, and are required to mesh with these corrugated step portions. The second-stage roll (14) in which the corrugation of
14) and a gluing mechanism (22) for gluing the corrugated top of the corrugated core paper (16) having a corrugated shape, and the second roll (1).
Located on the upstream side of the core paper (16) fed along 4),
A first press roll (34) facing the second stage roll (14)
And the core paper (1) fed along the second roll (14).
And a second press roll (36) located downstream of the second roll (14) and facing the second roll (14). These two press rolls (34, 36) and the second roll (14) ) With the corrugated top of the core paper (16), the liner (26) is pressure-bonded to the corrugated top to bond the core paper (16) with the core paper (16) according to the first combination. The liner (26) is supplied to the single-sided corrugated board manufacturing apparatus, and the first gap (G ₁ ) between the first press roll (34) and the second stage roll (14), the second press roll (36) and the second press roll (36). Second gap (G ₂ ) in corrugated roll (14)
And the second combination ... Nth combination, the corresponding core paper (16) and liner (26) are supplied to the single-sided corrugated board manufacturing apparatus to produce the first gap. (G ₁ ) and the second gap (G ₂ ) are determined in advance, and when the single-faced corrugated board is manufactured, the combination of the core paper (16) and the liner (26) is the first ... Nth. When any one of the combinations is applicable, the first press roll (34) and the second press roll (36) are replaced with the second stage roll based on the previously determined numerical values of the first and second gaps. One-sided corrugated board manufacturing, characterized in that the first gap (G ₁ ) and the second gap (G ₂ ) relating to a specific combination are set by moving the contact gap to (14) How to adjust the clearance of the device.