JP2006088458A - Double-faced corrugated cardboard-manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double faced corrugated cardboard-manufacturing apparatus which is constituted so as not only to prevent the collapse of the corrugation top parts of a corrugating medium but also to mutually bond the corrugation top parts of the corrugating medium in an aligning relationship to more enhance the strength of the double-faced corrugated cardboard sheet. <P>SOLUTION: The double-faced corrugated cardboard manufacturing apparatus is equipped with a positional shift adjusting means 41 for adjusting the tension applied to at least one of single-faced corrugated cardboard sheets 6, 7 on the basis of the positional shift quantity of the single-faced corrugated cardboard sheets 6, 7. Further, among a plurality of the feed rolls provided on the upstream or downstream side of the feed direction of the single-faced corrugated cardboard sheets 6, 7 from the adjusting position of the single-faced corrugated cardboard sheets 6, 7 due to the positional shift adjusting means 41 to feed the single-faced corrugated cardboard sheets 6, 7 so as to respectively wind them, at least the feed rolls 14 and 16 coming into contact with the surface on the side of the corrugating medium 2 of the single-faced corrugated sheet 6 are constituted of rolls of which the surfaces are not formed in a corrugation shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, after forming the first single-sided cardboard sheet and the second single-sided cardboard sheet in which the liner and the corrugated core are bonded together, the liner-side surface of the first single-sided cardboard sheet is formed. Affixing the core-side surface of the second single-sided cardboard sheet and producing a double-sided cardboard sheet by attaching another liner to the core-side surface of the first single-sided cardboard sheet, The present invention relates to a double-sided cardboard manufacturing apparatus.

  Conventionally, as shown in FIG. 11, a special corrugated cardboard sheet 506 formed by bonding together a liner 501, a center core 502, an intermediate liner 503, a center core 504, and a liner 505 is known. This corrugated cardboard sheet 506 has a structure in which the surface on the center side of the single-sided corrugated cardboard sheet (that is, the stepped portion of the core) is bonded to one surface of the double-sided corrugated cardboard sheet, and is called a double-sided corrugated cardboard sheet. The A double-sided cardboard manufacturing apparatus for manufacturing such a double-sided cardboard sheet 506 is disclosed in Patent Document 1 and Patent Document 2, for example.

  For example, in the double-sided corrugated board manufacturing apparatus described in Patent Document 1, a liner 501 and a corrugated core 502 are first bonded to form a single-sided corrugated cardboard sheet, and a liner 505 and a corrugated core 504 are provided. A single-sided corrugated cardboard sheet is formed by pasting together, and then the cores 502 and 504 of the two single-sided corrugated cardboard sheets are pasted together via an intermediate liner 503 to form a double-sided corrugated cardboard sheet 506.

  In the double-sided corrugated board manufacturing apparatus described in Patent Document 2, the intermediate liner 503 and the corrugated middle core 502 are first bonded to form a single-sided cardboard sheet, and then the single-sided cardboard sheet intermediate liner 503. The laminated core 504 is bonded together, and then the liner 501 is bonded to the intermediate core 502 and the liner 505 is bonded to the intermediate core 504 to form the double-sided cardboard sheet 506.

The double-sided corrugated cardboard sheet 506 is weak in strength if the position of the step top of the center core 502 and the step top of the center core 504 are slightly shifted in the conveying direction of the intermediate liner 503. In the double-sided corrugated board manufacturing apparatus described in 2, the step top of the center core 502 and the step top of the center core 504 are bonded (tuned) to each other at the same position in the transport direction of the intermediate liner 503.
Special table 2002-518227 gazette JP 2000-62054 A

  By the way, the double-sided corrugated board manufacturing apparatus described in Patent Document 1 described above uses a single-sided corrugated cardboard sheet composed of a liner 501 and a core 502 and a single-sided corrugated cardboard sheet composed of an intermediate liner 503 and a core 504 for a plurality of transport rolls. It is configured to be conveyed to the subsequent process while being wound, but in these plural conveying rolls, a stepped conveying roll whose surface is formed in a corrugated shape (substantially the same structure as a step roll that steps the core) And a single-sided corrugated cardboard sheet is wound around the corrugated surface of such a stepped transport roll so as to be transported.

  For this reason, when a position shift has occurred between the step top of the center core 502 of the single-sided cardboard sheet or the step top of the center core 504 and the stepped transport roll, the single-sided cardboard sheet passes through the stepped transport roll. The step tops of the center core 502 and the center core 504 may not follow the corrugated surface of the stepped transport roll, and the step tops of the center core 502 and the center core 504 may be crushed. The double-sided corrugated cardboard sheet 506 formed in such a state that the step tops of the center core 502 and the center core 504 are crushed has a problem that the strength is weak and a high-quality product cannot be manufactured.

  Further, the double-sided corrugated board manufacturing apparatus described in Patent Document 2 is configured such that when the core 504 is bonded to a single-sided cardboard sheet composed of an intermediate liner 503 and a center core 502, the single-sided corrugated cardboard sheet has a stepped transport roll as described above (patent The core 504 is bonded in a state of being wound around a joint formation timing roll in Document 2, but at this time, the step top of the core 502 of the single-sided cardboard sheet and the stepped conveyance If there is misalignment with the roll, when the single-sided corrugated sheet passes through the stepped conveyance roll, the step top of the core 502 does not follow the corrugated surface of the stepped conveyance roll, and the step top of the core 502 is It may be crushed. Thereby, like the technique of patent document 1, the intensity | strength of the double-sided corrugated cardboard sheet | seat 506 will become weak, and a high quality product cannot be manufactured.

  The present invention was devised in view of such problems, while preventing the step tops of the core from collapsing, and making sure that the step tops of the core are securely synchronized and pasted, An object of the present invention is to provide a double-sided corrugated board manufacturing apparatus capable of further improving the strength of the double-sided corrugated cardboard sheet.

  For this reason, the double-sided corrugated board manufacturing apparatus according to the first aspect of the present invention forms a first single-sided cardboard sheet and a second single-sided cardboard sheet by laminating a liner and a stepped core, respectively, A core-side surface of the second single-sided cardboard sheet is affixed to the liner-side surface of the first single-sided cardboard sheet, and another liner is attached to the core-side surface of the first single-sided cardboard sheet In a double-sided corrugated board manufacturing apparatus for producing a double-sided corrugated cardboard sheet, a first corrugation detecting means for detecting a corrugation of the first single-sided cardboard sheet, and the second single-sided cardboard A second step detection unit for detecting a step of the sheet, and the detection information obtained by the first and second step detection units of the first and second single-sided cardboard sheets. Misalignment A positional deviation amount calculating means for calculating, and a positional deviation adjusting means for adjusting a tension applied to at least one of the first and second single-faced cardboard sheets based on the positional deviation amount calculated by the positional deviation amount calculating means; And the first and second single-sided cardboard sheets are provided upstream or downstream in the conveying direction of the first and second single-sided cardboard sheets with respect to the adjustment positions of the first and second single-sided cardboard sheets by the positional deviation adjusting means. A plurality of transport rolls for winding and transporting the first and second single-sided cardboard sheets, respectively, and at least the cores of the first and second single-sided cardboard sheets among the plurality of transport rolls The conveyance roll which touches the surface of the side is characterized by being comprised with the roll by which the surface is not shape | molded by the waveform.

According to a second aspect of the present invention, there is provided the double-sided corrugated board manufacturing apparatus according to the first aspect of the invention, wherein the positional deviation adjusting means is arranged on the surface of at least one of the first and second single-sided cardboard sheets. The tension is adjusted by applying a resistance force against the conveying direction of the first and second single-sided cardboard sheets.
According to a third aspect of the present invention, there is provided the double-sided corrugated board manufacturing apparatus according to the first or second aspect of the present invention, wherein the positional deviation adjusting means obtains the paper physical property data of the first and second single-sided corrugated cardboard liners. It is characterized by adjusting the tension in consideration.

A double-sided corrugated board manufacturing apparatus according to a fourth aspect of the present invention is the apparatus according to any one of the first to third aspects, wherein the first and second step detection means are wound around the transport roll. The first and second single-sided cardboard sheets that are being rotated are configured to detect a stepped mountain.
A multi-sided corrugated board manufacturing apparatus according to a fifth aspect of the present invention is the apparatus according to any one of the first to fourth aspects, wherein the pitch of at least one of the first and second single-sided corrugated cardboard sheets is the same. A stepped mountain pitch measuring means, and a stepped mountain measured by the stepped mountain pitch measuring means provided on the upstream side of the first and second single-sided corrugated cardboard sheets with respect to the stepped mountain pitch measuring means. It is characterized by comprising corrugated pitch adjusting means for adjusting the tension applied to the liner before forming the sheet of at least one of the first and second single-sided cardboard sheets based on the pitch.

According to a sixth aspect of the present invention, there is provided the double-sided corrugated board manufacturing apparatus according to the fifth aspect of the present invention, wherein the corrugated pitch adjusting means is provided before the formation of at least one of the first and second single-sided corrugated cardboard sheets. The tension is adjusted by applying a resistance force against the conveying direction of the first and second single-sided cardboard sheets to the liner surface.
The double-sided corrugated board manufacturing apparatus of the present invention according to claim 7 is the apparatus according to claim 5 or 6, wherein the corrugated pitch adjusting means is a paper physical property data of the liner of the first and second single-sided cardboard sheets. The tension is adjusted in consideration of the above.

The multi-sided corrugated board manufacturing apparatus of the present invention according to claim 8 is the apparatus according to any one of claims 5 to 7, wherein the step pitch adjusting means is measured by the step pitch measuring means. The tension is adjusted so that the mountain pitch matches a preset target value.
The double-sided corrugated board manufacturing apparatus of the present invention according to claim 9 is the apparatus according to any one of claims 5 to 8, wherein the corrugated pitch measuring means is the first and second single-sided cardboard sheets. Are configured to measure the pitches of both step hills, and the step pit pitch adjusting means has one of the step hill pitches measured by the step hill pitch measuring means coincides with a preset target value. Thus, the other is characterized in that the tension is adjusted to be smaller than the above-mentioned one pitch.

  A double-sided corrugated board manufacturing apparatus according to a tenth aspect of the present invention is the apparatus according to any one of the fifth to ninth aspects, provided near the measurement position of the stepped pitch measuring means, A guide for stably running the second single-sided cardboard sheet is provided.

  According to the double-sided corrugated board manufacturing apparatus of the present invention, the transport roll in contact with at least the first and second single-sided corrugated sheet surfaces of the plurality of transport rolls is a roll whose surface is not formed into a corrugated shape. Since it is comprised, it can prevent that the corrugated mountain of a 1st and 2nd single-sided cardboard sheet | seat will be crushed during driving | running | working. Further, when the tension applied to at least one of the first and second single-sided cardboard sheets is adjusted by the positional deviation adjusting means, the single-sided cardboard sheet slides smoothly in the conveying direction. It can prevent the stepped mountain of the sheet from being crushed. Thereby, the stepped mountain of the first single-sided cardboard sheet and the stepped mountain of the second single-sided cardboard sheet can be reliably synchronized and bonded, and the strength of the double-sided cardboard sheet can be further improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(A) 1st Embodiment FIGS. 1-4 is for demonstrating the double-sided cardboard manufacturing apparatus as 1st Embodiment of this invention, FIG. 1 is the side view (partial block diagram), FIG. 2 is a side view of a double-sided corrugated cardboard sheet manufactured by the apparatus, FIG. 3 is an explanatory diagram for explaining the step-shift control, and FIG. 4 is a flowchart for explaining the step-shift control.

  As shown in FIG. 2, the double-sided corrugated board manufacturing apparatus according to the present embodiment is a single-sided corrugated board in which a back liner (first liner) 1 and a rolled core (first core) 2 are bonded together. A sheet (first one-sided cardboard sheet) 6 and a single-sided cardboard sheet (second one-sided cardboard sheet) 7 in which the intermediate liner 3 and the stepped core (second core) 4 are bonded to each other. After the formation, the surface on the intermediate core 3 side of the single-sided cardboard sheet 7 is attached to the surface on the intermediate core 3 side of the single-sided cardboard sheet 7, and the front liner (second By attaching the liner 5), a double-sided cardboard sheet 8 is manufactured.

  For this reason, as shown in FIG. 1, this double-sided corrugated board manufacturing apparatus is provided on the downstream side of the triple preheater 10 with the triple preheater 10 for heating the single-sided cardboard sheet 6, the single-sided cardboard sheet 7 and the front liner 5. A glue machine 30 for attaching glue to the step top of the core 2 of the single-sided cardboard sheet 6 (top of the mountain) and the step top of the core 4 of the single-sided cardboard sheet 7; The single-faced cardboard sheet 6, the single-faced cardboard sheet 7, and the double facer 50 for bonding the front liner 5 are mainly provided.

  Since the single-sided corrugated cardboard sheet 6 formed by the single facer (not shown) in the previous process has a large diameter compared to large preheater rolls (small preheater rolls 17 and 20 described later) provided in the triple preheater 10, In this case, the surface on the side of the core 2 is wound around a large preheater roll (11) to be heated. Thereby, the back liner 1 and the core 2 are reliably bonded together. In FIG. 1, reference numerals 11 a and 11 b are guide rolls for guiding the traveling direction of the single-sided cardboard sheet 6.

  The single-sided cardboard sheet 6 heated by the triple preheater 10 is wound around a guide roll 14, a guide roll 15, a guide roll 16 and a small preheater roll 17 (these are also referred to as conveyance rolls) in order and conveyed to the glue machine 30. It has become so. Specifically, first, the core 2 side surface of the single-sided cardboard sheet 6 is wound so as to contact the surface of the guide roll 14, and then the surface of the single-sided cardboard sheet 6 on the back liner 1 side is the surface of the guide roll 15. Is wound so that the surface on the core 2 side of the single-sided cardboard sheet 6 is in contact with the surface of the guide roll 16, and finally the surface on the back liner 1 side of the single-sided cardboard sheet 6 is The small preheater roll 17 is wound and conveyed so as to be in contact with the surface.

The small preheater roll 17 is formed with a smaller diameter than the large preheater roll 11, and functions so that the single-sided cardboard sheet 6 is heated again and the back liner 1 and the core 2 are bonded more reliably. .
Moreover, the guide roll 14, the guide roll 15, the guide roll 16, and the small preheater roll 17 are comprised by the roll (namely, roll which does not have a step) in which the surface is not shape | molded by the waveform. Thereby, the step top part of the core 2 of the single-sided cardboard sheet 6 being conveyed is not crushed. In addition, the guide roll 14 and the guide roll 16 which contact | connect the surface of the core 2 side at least of the single-sided corrugated board sheet 6 among said conveyance rolls 14-17 should just be comprised with the roll by which the surface is not shape | molded by the waveform. .

  The glue machine 30 is provided with a gluing device 30A that attaches glue to the step top of the core 2 of the single-sided corrugated cardboard sheet 6 conveyed by the conveying rolls 14-17. The gluing device 30A requires a gluing reservoir 31 for storing gluing, a gluing roll 32 for gluing the gluing of the gluing reservoir 31 to the top of the core 2 of the single-sided corrugated cardboard sheet 6, and gluing adhered to the surface of the gluing roll 32 And a scraping roll 33 that scrapes off according to the above. The single-sided corrugated cardboard sheet 6 is conveyed from the upper side of the gluing device 30A with the surface on the side of the core 2 down, and the gluing roll 32 comes into contact with the step top of the core 2 so that the glue is applied to the step top of the core 2. Is attached.

The single-sided corrugated cardboard sheet 6 in which glue is attached to the step top of the core 2 by the glue machine 30 is supported by the belt 18a that is wound around the guide roll 18 and travels to the double liner 50 side. It has come to be.
On the other hand, the single-sided cardboard sheet 7 formed by a single facer (not shown) in the previous process winds the surface on the side of the core 4 around the large preheater roll 12 provided below the large preheater roll 11 of the triple preheater 10. It is turned and heated. Thereby, the intermediate liner 3 and the core 4 are reliably bonded together. In FIG. 1, reference numerals 12 a and 12 b are guide rolls for guiding the traveling direction of the single-sided cardboard sheet 7.

  The single-sided corrugated cardboard sheet 7 heated by the triple preheater 10 is wound around a guide roll 19 and a small preheater roll 20 (also referred to as conveyance rolls) in order and conveyed to the glue machine 30. Specifically, first, the core 4 side surface of the single-sided cardboard sheet 7 is wound so as to contact the surface of the guide roll 19, and then the intermediate liner 3 side surface of the single-sided cardboard sheet 7 is the small preheater roll 20. It is wound and conveyed so as to be in contact with the surface.

The small preheater roll 20 is formed with a smaller diameter than the large preheater roll 12, and functions so that the single-sided cardboard sheet 7 is heated again and the intermediate liner 3 and the core 4 are bonded more reliably. .
Moreover, the guide roll 19 and the small preheater roll 20 are comprised by the roll (namely, roll which does not have a step) in which the surface is not shape | molded by the waveform. Thereby, the step top part of the core 4 of the single-sided cardboard sheet 7 being conveyed is not crushed. Of the guide roll 19 and the small preheater roll 20, at least the guide roll 19 that contacts the surface on the side of the core 4 of the single-sided corrugated cardboard sheet 7 may be constituted by a roll whose surface is not formed into a corrugated shape.

  The glue machine 30 is provided with a gluing device 30B that attaches glue to the top of the core 4 of the single-sided corrugated cardboard sheet 7 conveyed by the guide roll 19 and the small preheater roll 20. Similar to the configuration of the pasting device 30A described above, the pasting device 30B includes a pasting reservoir 34 that stores pasting paste, and a pasting roll 35 that attaches the pasting paste 34 to the top of the core 4 of the single-sided cardboard sheet 7. The gluing roll 35 includes a scraping roll 36 that scrapes off the glue adhered to the surface as necessary. The single-sided cardboard sheet 7 is conveyed from the substantially horizontal direction of the gluing device 30B with the surface on the side of the core 4 facing down, and the gluing roll 35 contacts the step top of the core 4 so that the top of the core 4 The glue is attached to the surface.

The single-sided corrugated cardboard sheet 7 in which glue is attached to the step top of the core 4 by the glue machine 30 is guided directly below the single-faced cardboard sheet 6 while being maintained in a substantially horizontal posture, and is conveyed to the double facer 50. ing.
The front liner 5 is wound around a large preheater roll 13 provided below the large preheater roll 12 of the triple preheater 10 and heated. Thereby, it becomes possible to improve the bonding (adhesion) performance of the single-sided cardboard sheet 7 and the front liner 5. In FIG. 1, reference numerals 13 a and 13 b are guide rolls for guiding the traveling direction of the front liner 5.

  The front liner 5 heated by the triple preheater 10 is conveyed to the glue machine 30, guided by a guide roll 21 provided in the glue machine 30, heated by the small preheater roll 22, and then immediately before the double facer 50. 23 is heated. Thus, the bonding (adhesion) performance of the single-sided cardboard sheet 7 and the front liner 5 can be further improved by heating the front liner 5 again. Thereafter, the front liner 5 is guided directly below the single-sided cardboard sheet 7 by the guide roll 24 and conveyed to the double facer 50.

  The double facer 50 mainly includes pressurizing devices 51 and 52 disposed above the single-sided cardboard sheet 6 via a belt 18a and heating plates 53 and 54 disposed below the front liner 5. Yes. Thus, the single-sided cardboard sheet 6, the single-sided cardboard sheet 7 and the front liner 5 are pressed and heated by the double facer 50 and bonded together to produce a double-sided cardboard sheet 8. Here, as described above, the pressing devices 51 and 52 are disposed above the single-sided cardboard sheet 6 and the heating plates 53 and 54 are disposed below the front liner 5. It is good also as a structure which arrange | positions a pressurization apparatus and a heating plate 1 each upwards, and arrange | positions a pressurization apparatus and a heating plate 1 each also under the surface liner 5. FIG. In this case, for example, a pressure device is disposed on the upstream side in the sheet conveying direction, and a heating plate is disposed on the downstream side.

  The double-sided corrugated board manufacturing apparatus includes a first corrugated sensor (first corrugation detecting means) 40 </ b> A for detecting a corrugated mountain of the single-sided corrugated cardboard sheet 6 (that is, a step top of the core 2), A second step sensor (second step detection means) 40B that detects the step (i.e., step top of the core 4) and a position adjustment device that adjusts the tension applied to the single-sided cardboard sheet 6 (position adjustment) Means) 41 and a controller 60 for controlling the misalignment adjusting device 41 based on detection information from the first step mountain sensor 40A and the second step mountain sensor 40B.

  The first corrugated sensor 40 </ b> A is arranged at a position facing the small preheater roll 17, and detects the corrugated mountain of the single-sided cardboard sheet 6 wound around the small preheater roll 17. As described above, the first corrugated sensor 40A detects the corrugation of the single-sided cardboard sheet 6 supported by the small preheater roll 17, so the corrugated mountain of the single-sided cardboard sheet 6 that is running without being supported by anything is detected. It is possible to detect a stepped mountain more accurately than in the case of detection.

  The second corrugated sensor 40 </ b> B is disposed at a position facing the small preheater roll 20, and detects the corrugated mountain of the single-sided cardboard sheet 7 wound around the small preheater roll 20. Thus, since the second step sensor 40B detects the step of the single-sided cardboard sheet 7 supported by the small preheater roll 20, the second step sensor 40B travels without being supported by anything like the first step sensor 40A. Thus, it is possible to detect the corrugation more accurately than when detecting the corrugation of the single-sided corrugated cardboard sheet 7.

  The misalignment adjusting device 41 is provided on the upstream side in the conveyance direction of the single-sided corrugated cardboard sheet 6 with respect to the detection position of the first corrugated sensor 40A. Here, the transmission belt stretched around the rotating shaft 15a of the guide roll 15 is provided. 42 and a brake device 43 such as a powder brake for controlling the rotational speed of the guide roll 15 via the transmission belt 42. As a result, a resistance force that opposes the conveying direction is applied to the surface of the single-sided cardboard sheet 6 (the surface of the back liner 1), thereby adjusting the tension applied to the single-sided cardboard sheet 6.

The controller 60 includes a positional deviation amount calculation unit (positional deviation amount calculation unit) 61, a determination unit (determination unit) 62, a sheet tension calculation unit (sheet tension calculation unit) 63, a storage unit (storage unit) 64, and a control unit ( Each function corresponding to the control means 65 is provided.
The misregistration amount calculation unit 61 calculates the misregistration amount δ ₁ between the single-sided corrugated cardboard sheet 6 and the single-sided corrugated cardboard sheet 7 based on the detection information obtained by the first stepped mountain sensor 40A and the second stepped mountain sensor 40B. Is functioning. For this reason, the misalignment amount calculation unit 61 receives the detection signal of the stepped mountain of the single-sided cardboard sheet 6 from the first stepped mountain sensor 40A, and the stepped amount of the single-sided cardboard sheet 7 from the second stepped mountain sensor 40B. A detection signal is input. For example, FIG. 3 shows a signal waveform input from the first step mountain sensor 40A and a signal waveform input from the second step mountain sensor 40B. The misregistration amount calculation unit 61 calculates these two signal waveforms. The stepped position shift amount δ ₁ is calculated. In this case, the stepped displacement amount δ ₁ may be calculated for each stepped pulse. However, in order to improve the accuracy, a moving average is used (that is, for example, the last 200 consecutive steps). The average value of the stepped position shift amount δ ₁ ) may be calculated.

The determination unit 62 functions to determine whether or not the stepped mountain position deviation amount δ ₁ calculated by the positional deviation amount calculation unit 61 is within a preset allowable value. The allowable value is input and stored in advance in the storage unit 64 by an input device (not shown), and can be appropriately changed by the input device.
When the determination unit 62 determines that the stepped displacement amount δ ₁ is outside the allowable value, the sheet tension calculation unit 63 determines the paper physical property data of the back liner 1 of the single-sided cardboard sheet 6 [for example, basis weight (paper 1 m ² The sheet tension of the single-sided corrugated cardboard sheet 7 and the tension required to synchronize the corrugated sheet of the single-sided corrugated cardboard sheet 6 with each other. Thereby, the required tension according to the paper type of the back liner 1 can be calculated. Note that the paper physical property data is input and stored in advance in the storage unit 64 by an input device (not shown) in the same manner as the allowable value, and can be appropriately changed by the input device.

  The control unit 65 functions to control the misalignment adjusting device 41 in accordance with the sheet tension calculated by the sheet tension calculating unit 63. Specifically, the control unit 65 controls the brake device 43 to adjust the rotation speed of the guide roll 15. Thereby, the tension applied to the single-sided cardboard sheet 6 can be adjusted, and the stepped mountain of the single-sided cardboard sheet 6 can be synchronized with the stepped mountain of the single-sided cardboard sheet 7.

Since the double-sided corrugated board manufacturing apparatus according to the first embodiment of the present invention is configured as described above, the positional deviation adjustment control for synchronizing the corrugated mountain of the single-sided corrugated cardboard sheet 6 and the corrugated mountain of the single-sided corrugated cardboard sheet 7. Is performed in accordance with the flowchart shown in FIG.
That is, first, the first step sensor 40A detects the step of the single-sided cardboard sheet 6, the second step sensor 40B detects the step of the single-sided cardboard sheet 7 (step S0), and then the position shift. The amount calculation unit 61 calculates the positional deviation amount δ ₁ (step S1). Then, the determination unit 62 determines whether the positional deviation amount [delta] ₁ is within the allowable value (step S2), and if the positional shift amount [delta] ₁ is within the allowable value returns to Step S0, positional shift amount [delta] _{If 1} is outside the allowable value, the necessary sheet tension applied to the single-sided cardboard sheet 6 is calculated (step S3). When the sheet tension is calculated in step S3, the control unit 65 controls the misalignment adjusting device 41 based on the calculated sheet tension. Thereby, the double-sided cardboard sheet 8 in which the corrugated mountain of the single-sided cardboard sheet 6 and the corrugated mountain of the single-sided cardboard sheet 7 are synchronized can be manufactured.

  The double-sided corrugated board manufacturing apparatus includes at least one of the transport rolls 14 to 17 provided on the upstream side or the downstream side in the transport direction of the single-sided cardboard sheet 6 from the adjustment position of the single-sided cardboard sheet 6 by the misalignment adjusting device 41. Since the guide roll 16 that contacts the surface of the single-sided corrugated cardboard sheet 6 on the side of the core 2 is composed of a roll whose surface is not formed into a corrugated shape, It won't be crushed. Further, when the tension applied to the single-sided cardboard sheet 6 is adjusted by the positional deviation adjusting device 41, the single-sided cardboard sheet 6 slides smoothly in the conveying direction. Will not be crushed. Of course, the step top of the core 4 of the single-sided cardboard sheet 7 is not crushed. Thereby, the step top of the core 2 of the single-sided cardboard sheet 6 and the step top of the core 4 of the single-sided cardboard sheet 7 can be reliably synchronized and bonded, and the strength of the double-sided cardboard sheet can be further improved. Can do.

  In this embodiment, the misalignment adjusting device 41 is provided for adjusting the tension of the single-sided cardboard sheet 6. However, in addition to the misalignment adjusting device 41, the misalignment adjustment for adjusting the tension of the single-sided cardboard sheet 7 is provided. A device (same configuration as the misalignment adjusting device 41) may be provided. In this case, the step top of the core 2 of the single-sided cardboard sheet 6 and the step top of the core 4 of the single-sided cardboard sheet 7 can be synchronized by controlling either or both of the position deviation adjusting devices.

(B) Second Embodiment FIGS. 5 to 7 are for explaining a double-sided cardboard manufacturing apparatus as a second embodiment of the present invention. FIG. 5 is a side view (partial block diagram), FIG. 6 is an explanatory diagram for explaining the step mountain pitch control, and FIG. 7 is a flowchart for explaining the step mountain pitch control. In FIG. 5, the same members or parts as those in the first embodiment are denoted by the same reference numerals. As shown in FIG. 5, the apparatus configuration according to the present embodiment includes the apparatus configuration described with reference to FIG. 1 in the first embodiment. Therefore, since the apparatus configuration described with reference to FIG. 1 is the same as that of the first embodiment, detailed description thereof will be omitted below.

  The double-sided corrugated board manufacturing apparatus according to the present embodiment can control the stepped pitch of the single-faced cardboard sheet 6 in addition to the stepped position shift control of the first embodiment. For this reason, as shown in FIG. 5, in addition to the apparatus configuration described in the first embodiment, the present double-sided corrugated board manufacturing apparatus measures the pitch of the staircase of the single-sided cardboard sheet 6 immediately before the triple preheater 10. A pitch measuring device (stepped pitch measuring means) 70 is provided. The corrugated pitch measuring device 70 is in contact with the surface on the back liner 1 side of the single-sided cardboard sheet 6 and rotates in synchronization with the travel of the single-sided cardboard sheet 6, the circumference of the detection roll 71 and the detection roll 71. A distance sensor (distance calculation means) 72 for calculating the travel distance of the single-sided cardboard sheet 6 from the number of rotations of the single-sided cardboard sheet 6 is disposed in the vicinity of the surface on the center 2 side of the single-sided cardboard sheet 6 and detects a stepped mountain of the single-sided cardboard sheet 6. A pulse count sensor (third step detection means) 73 is mainly provided. Further, guides for stabilizing the traveling of the single-sided cardboard sheet 6 are provided at both ends in the machine width direction in the vicinity of the measurement position of the stepped pitch measuring device 70. Thereby, meandering of the single-sided cardboard sheet 6 can be prevented, and the travel distance of the single-sided cardboard sheet 6 can be calculated and the steps can be detected with high accuracy.

  Further, the controller 60 has the function of the misalignment control device 100 including the misregistration amount calculation unit 61, the determination unit 62, the sheet tension calculation unit 63, the storage unit 64, and the control unit 65 described in the first embodiment. In addition, a step mountain pitch calculation unit (step mountain pitch calculation unit) 161, a determination unit (determination unit) 162, a liner tension calculation unit (liner tension calculation unit) 163, a storage unit (storage unit) 164, and a control unit (control unit) ) The function of the stepped pitch control device 101 consisting of 165 is provided.

The corrugated pitch calculation unit 161 functions to calculate the corrugated pitch P ₁ of the single-sided corrugated cardboard sheet 6 based on the information obtained by the distance sensor 72 and the pulse count sensor 73 of the corrugated pitch measuring device 70. . Therefore, the travel distance of the single-sided cardboard sheet 6 is input from the distance sensor 72 to the corrugated-pitch calculation unit 161, and the detection signal of the stepped mountain of the single-sided cardboard sheet 6 is input from the pulse count sensor 73. It has become. For example, FIG. 6 shows a signal waveform input from the pulse count sensor 73. In the stepped pitch calculation unit 161, the travel distance M of the single-sided cardboard sheet 6 and the number N of steps of the core 2 of the single-sided cardboard sheet 6 are shown. The stepped pitch P ₁ (= M / N) is calculated from the above.

The determination unit 162 functions to determine whether or not the step mountain pitch P ₁ calculated by the step mountain pitch calculation unit 161 is within a preset allowable value. The allowable value is input and stored in advance in the storage unit 164 by an input device (not shown), and can be changed as appropriate by the input device.
When the determination unit 162 determines that the stepped pitch P ₁ is outside the allowable value, the liner tension calculation unit 163 determines the paper property data of the back liner 1 of the single-sided cardboard sheet 6 [for example, basis weight (per 1 m ^{2 of} paper). The liner tension necessary to keep the step pitch P ₁ within an allowable value. Thereby, the required tension according to the paper type of the back liner 1 can be calculated. Note that the paper physical property data is input and stored in advance in the storage unit 164 by an input device (not shown) in the same manner as the allowable value, and can be appropriately changed by the input device.

The control unit 164 functions to control the stepped pitch adjustment device 80 according to the sheet tension calculated by the liner tension calculation unit 163.
Here, the step hill pitch adjusting device 80 and the device configuration around the single facer 200 provided with the step hill pitch adjusting device 80 will be described.
The back liner 1 is supplied to the single facer 200 through the liner preheater 300. Further, the core 2 is supplied to the single facer 200 through the core preheater 350.

  The liner preheater 300 includes liner heating rolls 301A and 301B arranged vertically in two stages. The liner heating rolls 301A and 301B are heated to a predetermined temperature by supplying steam to the inside, and the back liner 1 is wound around the peripheral surfaces of these liner heating rolls 301A and 301B, and the liner heating rolls 301A and 301B Preheated.

The core preheater 350 has substantially the same configuration as the liner preheater 300, and includes a core heating roll 351 heated to a predetermined temperature by supplying steam therein. Then, the core 2 is wound around the peripheral surface of the core heating roll 351 and preheated by the core heating roll 351.
The single facer 200 includes a pressure belt 213 wound around a belt roll 211 and a tension roll 212, and an upper roll 214 that has a corrugated surface and is in contact with the pressure belt 213 in a pressurized state. A lower roll 215 having a wave-like surface and meshing with the upper roll 214 is provided. The back liner 1 heated by the liner preheater 300 is wrapped around the liner preheating roll 217 and preheated on the way, and then guided by the belt roll 211 to be pressed together with the pressure belt 213 and the pressure belt 213 and the upper roll 214. It is transferred to the nip part.

On the other hand, the core 2 heated by the core preheater 350 is wound around the core preheating roll 218 and preheated, and after being wound around the meshing portion between the upper roll 214 and the lower roll 215, It is guided by the upper roll 214 and transferred to the nip portion between the pressure belt 213 and the upper roll 214.
In the vicinity of the upper roll 214, a gluing device 216 is disposed. The gluing device 216 includes a gluing reservoir 216a that stores gluing, a gluing roll 216b that glues the core 2 conveyed by the upper roll 214, and a doctor roll 216c that adjusts the amount of gluing applied to the peripheral surface of the gluing roll 216b. And a scraper 216d that scrapes off the glue from the doctor roll 216c. The core 2 that has been wound at the meshing portion between the upper roll 214 and the lower roll 215 is glued to the top of each step of the mountain by the glue roll 216b, and the back liner is formed at the nip portion between the pressure belt 213 and the upper roll 214. 1 is attached. Thereby, the single-sided cardboard sheet 6 is formed.

  In such a device configuration around the single facer 200, the stepped pitch adjusting device 80 is located between the liner preheater 300 and the single facer 200 on the upstream side in the transport direction of the single-sided corrugated cardboard sheet 6 relative to the stepped pitch measuring device 70. Is provided. Specifically, the stepped pitch adjustment device 80 has a dancer roll 85 that comes into contact with the surface of the back liner 1 conveyed from the liner preheater 300 to the single facer 200 from above, and a dancer roll 85 in the vertical direction (see FIG. 5). And a piston cylinder 86 that can swing in the direction E). As a result, by controlling the piston cylinder 86 and moving the dancer roll 85 downward, it is possible to increase the resistance force against the conveying direction on the surface of the back liner 1 and increase the tension applied to the back liner 1. By moving the dancer roll 85 in the upward direction, it is possible to reduce the resistance force against the conveying direction on the surface of the back liner 1 and to reduce the tension applied to the back liner 1.

  That is, the control unit 164 described above controls the piston cylinder 86 of the stepped pitch adjusting device 80 according to the liner tension calculated by the liner tension calculating unit 163 to adjust the tension applied to the back liner 1, and the single-sided corrugated cardboard sheet. It functions so that the 6 step pitch falls within the allowable value.

  Since the double-sided corrugated board manufacturing apparatus as the second embodiment of the present invention is configured as described above, the corrugation of the single-sided cardboard sheet 6 and the single-sided corrugated sheet 7 described in the first embodiment are synchronized. In addition to the misalignment adjustment control, the stepped pitch control of the single-sided cardboard sheet 6 can be performed, and the stepped pitch control is performed according to the flowchart shown in FIG.

That is, first, the pulse count sensor 73 detects the stepped mountain of the single-sided cardboard sheet 6, the distance sensor 72 calculates the travel distance of the single-sided cardboard sheet 6 (step T0), and then the cardboard pitch calculating unit 161 A stepped pitch P ₁ is calculated (step T1). Then, the determination unit 162 determines whether the corrugation pitch P ₁ is within the allowable value (step T2), returns to flute tip if the pitch P ₁ is within the allowable value step T0, corrugation pitch P _{If 1} is outside the allowable value, the necessary liner tension applied to the back liner 1 is calculated (step T3). When the liner tension is calculated in step T3, the control unit 165 controls the stepped pitch adjusting device 80 based on the calculated liner tension. Thereby, the single-sided corrugated cardboard sheet 6 in which the corrugated pitch is within the allowable value can be formed. Further, the stepped portion of the core 2 of the single-sided corrugated cardboard sheet 6 and the step of the core 4 of the single-sided corrugated cardboard sheet 7 in the double facer 50 do not collapse the stepped ridges of the single-sided cardboard sheet 6 and the stepped ridges of the single-sided cardboard sheet 7. The top portion can be more securely synchronized and bonded together, and the strength of the double-sided cardboard sheet 8 can be improved.

(C) Third Embodiment FIG. 8 is a side view (partially block diagram) schematically showing a double-sided cardboard manufacturing apparatus as a third embodiment of the present invention. In FIG. 8, the same members or parts as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 8, the double-sided corrugated board manufacturing apparatus according to the present embodiment can control the corrugated pitch of the single-sided corrugated cardboard sheet 7 in addition to the corrugated position shift control of the first embodiment. . That is, the difference from the second embodiment is that the stepped pitch adjustment of the single-sided cardboard sheet 7 is performed instead of the single-sided cardboard sheet 6. For this reason, the double-sided corrugated board manufacturing apparatus includes a corrugated pitch measuring device 70 ′ for measuring the corrugated pitch of the single-sided corrugated cardboard sheet 7, a corrugated pitch adjusting device 80 ′ for adjusting the tension applied to the intermediate liner 3, There is provided a step mountain pitch control device 101 'for controlling the step mountain pitch adjusting device 80' based on the measurement result from the mountain pitch measuring device 70 '. The step hill pitch measuring device 70 ', step hill pitch adjusting device 80' and step hill pitch control device 101 'are the step hill pitch measuring device 70, step hill pitch adjusting device 80 and step hill described in the second embodiment, respectively. The configuration is the same as that of the pitch control device 101.

With such a configuration, first, the step count of the single-sided cardboard sheet 7 is detected by the pulse count sensor 73 of the cardboard pitch adjusting device 80 ', and the travel distance of the single-sided cardboard sheet 7 is calculated by the distance sensor 72. A stepped pitch P ₂ of the sheet 7 is calculated. By corrugation pitch controller 101 'determines whether corrugation pitch P ₂ is within an allowable value, the required liner to be applied to the intermediate liner 3 if out of tolerance is corrugation pitch P ₂ The tension is calculated, and the stepped pitch adjusting device 80 'is controlled based on the calculated liner tension. Thereby, the single-sided corrugated cardboard sheet 7 in which the corrugated pitch is within the allowable value can be formed. Further, the stepped portion of the core 2 of the single-sided corrugated cardboard sheet 6 and the step of the core 4 of the single-sided corrugated cardboard sheet 7 in the double facer 50 do not collapse the stepped ridges of the single-sided cardboard sheet 6 and the stepped ridges of the single-sided cardboard sheet 7. The top portion can be more securely synchronized and bonded together, and the strength of the double-sided cardboard sheet 8 can be improved.

(D) Fourth Embodiment FIG. 9 is a side view (partially block diagram) schematically showing a double-sided cardboard manufacturing apparatus as a fourth embodiment of the present invention. In FIG. 9, the same members or parts as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 9, the double-sided corrugated board manufacturing apparatus according to this embodiment can control the corrugated pitch of the single-sided corrugated cardboard sheet 6 and the single-sided corrugated board sheet 7 in addition to the corrugated position shift control of the first embodiment. It is a thing. That is, the first to third embodiments are combined. According to such a configuration, it is possible to form the single-sided cardboard sheet 6 and the single-sided cardboard sheet 7 whose corrugated pitch is within an allowable value. Further, the stepped portion of the core 2 of the single-sided corrugated cardboard sheet 6 and the step of the core 4 of the single-sided corrugated cardboard sheet 7 in the double facer 50 do not collapse the stepped ridges of the single-sided cardboard sheet 6 and the stepped ridges of the single-sided cardboard sheet 7. The top portion can be more securely synchronized and bonded together, and the strength of the double-sided cardboard sheet 8 can be improved.

(E) 5th Embodiment Next, with reference to FIG. 9 used in the said 4th Embodiment, the double-sided cardboard manufacturing apparatus concerning 5th Embodiment of this invention is demonstrated. In the fourth embodiment, the liner tension is adjusted so that the stepped pitches of the single-sided cardboard sheet 6 and the single-sided cardboard sheet 7 fall within the allowable values. 6 and the single-sided corrugated cardboard sheet 7 are configured to adjust the liner tension such that the stepped pitches are respectively set to preset target values.

  For this reason, the target value of the stepped pitch of the single-sided corrugated cardboard sheet 6 is previously input and stored in the storage unit 164 of the stepped pitch control device 101 by an input device (not shown), and the stepped pitch is determined by the determination unit 162. If the step pitch is not the target value, the liner tension calculation unit 163 calculates the necessary liner tension, and the control unit 165 causes the step pitch adjustment device 80 to operate. Be controlled. Similarly, the target value of the stepped pitch of the single-sided corrugated cardboard sheet 7 is previously input and stored in the storage unit of the stepped pitch control device 101 ′ by an input device (not shown), and the stepped portion is checked by the determination unit. It is determined whether or not the pitch is the target value. If the stepped pitch is not the target value, the liner tension calculating unit calculates the necessary liner tension, and the control unit calculates the stepped pitch adjusting device 80. 'Is controlled. The target value can be set appropriately for each of the single-sided cardboard sheet 6 and the single-sided cardboard sheet 7.

  With such a configuration, the single-sided cardboard sheets 6 and 7 can be formed at a desired stepped pitch. Further, the stepped portion of the core 2 of the single-sided corrugated cardboard sheet 6 and the step of the core 4 of the single-sided corrugated cardboard sheet 7 in the double facer 50 do not collapse the stepped ridges of the single-sided cardboard sheet 6 and the stepped ridges of the single-sided cardboard sheet 7. The top portion can be more securely synchronized and bonded together, and the strength of the double-sided cardboard sheet 8 can be improved.

(F) 6th Embodiment FIG. 10: is a side view (partial block diagram) which shows typically the double-sided cardboard manufacturing apparatus as 6th Embodiment of this invention. In FIG. 10, the same members or parts as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
In the fourth embodiment described above, the liner tension is adjusted so that the stepped pitches of the single-sided cardboard sheet 6 and the single-sided cardboard sheet 7 fall within the allowable values. The liner tension is adjusted so that the stepped pitch becomes a preset target value. On the other hand, for the single-sided cardboard sheet 6, the liner tension is adjusted so that the stepped pitch is smaller than the stepped pitch of the single-sided cardboard sheet 7. Is configured to do.

  For this reason, in the stepped pitch control apparatus 101 ′, the target value of the stepped pitch of the single-sided corrugated cardboard sheet 7 is previously input and stored in the storage unit by an input device (not shown), and the stepped pitch is determined by the determination unit. If the step pitch is not the target value, the liner tension calculating unit calculates the necessary liner tension, and the control unit controls the step pitch adjusting device 80 '. The Further, the step mountain pitch information of the single-sided cardboard sheet 7 calculated by the step mountain pitch calculation unit of the step mountain pitch control device 101 ′ is sent to the step mountain pitch control device 101A. The step mountain pitch control device 101A includes the step mountain pitch calculation unit 161, the determination unit 162, the liner tension calculation unit 163, and the control unit 165 of the step mountain pitch control device 101 described above. Then, in the step mountain pitch control device 101A, whether or not the step mountain pitch of the single-sided cardboard sheet 6 calculated by the step mountain pitch calculation unit 161 is smaller than the step mountain pitch sent from the step mountain pitch control device 101 ′. Is determined by the determination unit 162. If it is larger, the necessary liner tension is calculated by the liner tension calculation unit 163, and the stepped pitch adjustment device 80 is controlled by the control unit 165.

  With such a configuration, the single-sided corrugated cardboard sheet 7 can be formed at a desired corrugated pitch, and the corrugated pitch of the single-faced corrugated cardboard sheet 6 can be made smaller than the stepped pitch of the single-faced corrugated cardboard sheet 7. Since the tension of the single-sided corrugated cardboard sheet 6 is adjusted by the positional deviation adjusting device 41 in a subsequent process, the stepped pitch of the single-sided cardboard sheet 6 can be made smaller than the stepped pitch of the single-sided cardboard sheet 7 in this way. preferable. Further, the stepped portion of the core 2 of the single-sided corrugated cardboard sheet 6 and the step of the core 4 of the single-sided corrugated cardboard sheet 7 in the double facer 50 do not collapse the stepped ridges of the single-sided cardboard sheet 6 and the stepped ridges of the single-sided cardboard sheet 7. The top portion can be more securely synchronized and bonded together, and the strength of the double-sided cardboard sheet 8 can be improved.

(G) Others Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view (partial block diagram) which shows typically the double-sided cardboard manufacturing apparatus as 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view schematically showing a double-sided cardboard sheet manufactured by a double-sided cardboard manufacturing apparatus as a first embodiment of the present invention. It is explanatory drawing for demonstrating the stepped position shift control concerning 1st Embodiment of this invention. It is a flowchart for demonstrating the stepped position shift control concerning 1st Embodiment of this invention. It is a side view (partial block diagram) which shows typically the double-sided cardboard manufacturing apparatus as a 2nd embodiment of the present invention. It is explanatory drawing for demonstrating the step mountain pitch control concerning 2nd Embodiment of this invention. It is a flowchart for demonstrating the step pitch control concerning 2nd Embodiment of this invention. It is a side view (partial block diagram) which shows typically the double-sided cardboard manufacturing apparatus as a 3rd embodiment of the present invention. It is a side view (partial block diagram) which shows typically the double-sided corrugated board manufacturing apparatus as 4th and 5th embodiment of this invention. It is a side view (partial block diagram) which shows typically the double-sided corrugated board manufacturing apparatus as 6th Embodiment of this invention. It is a figure for demonstrating the conventional double-sided cardboard manufacturing apparatus, Comprising: It is a side view of a double-sided cardboard sheet.

Explanation of symbols

1 Back liner (first liner)
2 center core (first core)
3 Intermediate liner 4 Center core (second core)
5 Front liner (second liner)
6 single-sided cardboard sheet (first single-sided cardboard sheet)
7 single-sided cardboard sheet (second single-sided cardboard sheet)
8 Double-sided corrugated cardboard sheet 10 Triple preheater 11, 13 Large preheater roll 14, 15, 16, 18, 19, 20 Guide roll 15a Rotating shaft 17, 20, 22, 23 Small preheater roll 18a Belt 30 Glue machine 30A, 30B Gluing device 31 Glue Reservoir 32 Gluing Roll 33 Scraping Roll 40A First Step Mountain Sensor (First Step Mountain Detection Means)
40B Second step sensor (second step detection means)
41 Position shift adjustment device (position shift adjustment means)
42 Transmission belt 43 Brake device 50 Double facer 51, 52 Pressure device 53, 54 Heating plate 60 Controller 61 Position shift amount calculation unit (position shift amount calculation means)
62 determination unit (determination means)
63 Sheet tension calculation unit (sheet tension calculation means)
64 storage unit (storage means)
65 Control unit (control means)
70, 70 'Stepped pitch measuring device (stepped pitch measuring means)
71 Detection roll 72 Distance sensor (distance calculation means)
73 Pulse count sensor (third step mountain detecting means)
80, 80 'Stepped pitch adjustment device 85 Dancer roll 86 Piston cylinder 101, 101', 101A Stepped pitch control device 161 Stepped pitch calculation unit (stepped pitch calculation means)
162 determination unit (determination means)
163 Liner tension calculation part (Liner tension calculation means)
164 Storage unit (storage means)
165 Control unit (control means)
200 single facer

Claims (10)

The liner and the stepped core are bonded together to form a first single-sided cardboard sheet and a second single-sided cardboard sheet, respectively, and the second side of the first single-sided cardboard sheet is formed on the liner-side surface. A double-sided corrugated board manufacturing apparatus for manufacturing a double-sided corrugated board sheet by sticking a core-side surface of a single-sided cardboard sheet and attaching another liner to the core-side surface of the first single-sided cardboard sheet. In
First corrugation detection means for detecting corrugations of the first single-sided cardboard sheet;
Second corrugation detection means for detecting corrugations of the second single-sided cardboard sheet;
A misregistration amount calculating means for calculating a misregistration amount of the step height of the first and second single-sided cardboard sheets from the detection information obtained by the first and second step height detecting means;
A positional deviation adjusting means for adjusting a tension applied to at least one of the first and second single-sided cardboard sheets based on the positional deviation amount calculated by the positional deviation amount calculating means;
The first and second single-sided cardboard sheets are provided on the upstream side or the downstream side in the conveying direction of the first and second single-sided cardboard sheets with respect to the adjustment positions of the first and second single-sided cardboard sheets by the misalignment adjusting means. A plurality of transport rolls for winding and transporting the second single-sided corrugated cardboard sheet, respectively, and transporting at least the core side surface of the first and second single-faced cardboard sheets among the plurality of transport rolls A double-sided corrugated board manufacturing apparatus, wherein the roll is composed of a roll whose surface is not formed into a corrugated shape. The positional deviation adjusting means applies a resistance force against the conveying direction of the first and second single-faced cardboard sheets to at least one surface of the first and second single-faced cardboard sheets. 2. The double-sided cardboard manufacturing apparatus according to claim 1, wherein the tension is adjusted. The double-sided corrugated board manufacturing method according to claim 1 or 2, wherein the misalignment adjusting means adjusts the tension in consideration of the paper physical property data of the liner of the first and second single-sided cardboard sheets. apparatus. The first and second step detecting means are configured to detect steps of the first and second single-sided cardboard sheets wound around the transport roll. The double-sided cardboard manufacturing apparatus according to any one of claims 1 to 3. Corrugated pitch measuring means for measuring the pitch of at least one corrugated mountain of the first and second single-sided cardboard sheets;
The first and second single-sided cardboard sheets are provided on the upstream side in the conveying direction of the first and second single-sided cardboard sheets from the first and second stepped pitch measurement means, and the first and second 5. A corrugated pitch adjusting means for adjusting a tension applied to a liner before forming the sheet of at least one of the second single-sided corrugated cardboard sheets is provided. Double-sided cardboard manufacturing equipment. The corrugated pitch adjusting means resists the conveying direction of the first and second single-sided cardboard sheets with respect to the liner surface before forming the sheet of at least one of the first and second single-sided cardboard sheets. 6. The double-sided cardboard manufacturing apparatus according to claim 5, wherein the tension is adjusted by applying a force. The double-sided cardboard according to claim 5 or 6, wherein the corrugated pitch adjusting means adjusts the tension in consideration of the paper physical property data of the liner of the first and second single-sided cardboard sheets. Manufacturing equipment. 8. The step hill pitch adjusting unit adjusts the tension so that the step hill pitch measured by the step hill pitch measuring unit coincides with a preset target value. 2. The double-sided cardboard manufacturing apparatus according to claim 1. The corrugated pitch measuring means is configured to measure the corrugated pitch of both of the first and second single-sided corrugated cardboard sheets;
The step hill pitch adjusting means is arranged so that one of the step hill pitches measured by the step hill pitch measuring means coincides with a preset target value, and the other is smaller than the one of the above pitches. The double-sided corrugated board manufacturing apparatus according to any one of claims 5 to 8, wherein the tension is adjusted. The guide according to any one of claims 5 to 9, further comprising a guide provided in the vicinity of a measurement position of the corrugated pitch measuring means for stably running the first and second single-sided cardboard sheets. 2. The double-sided cardboard manufacturing apparatus according to claim 1.

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