Double-arch corrugated board processing equipment

Abstract

The utility model discloses double-arch corrugated board processing equipment which comprises a first corrugated base paper receiving system, a second corrugated base paper receiving system and an inner-layer cardboard paper receiving system, and further comprises a corrugated base paper gluing system, a compounding system and a single corrugated cardboard forming system, the first corrugated base paper receiving system is used for outputting first corrugated base paper, the second corrugated base paper receiving system is used for outputting second corrugated base paper, the inner-layer cardboard paper receiving system is used for outputting inner-layer cardboard paper, and the corrugated base paper gluing system is used for gluing the first corrugated base paper. The compounding system is used for compounding the first corrugating base paper and the second corrugating base paper together to form composite corrugated paper, and the single corrugated paperboard forming system is used for bonding inner-layer cardboard paper and the composite corrugated paper together. The double-arch corrugated board production device is used for producing double-arch corrugated boards, and performance parameters such as interlayer binding force, water absorption, bursting strength and edge pressure strength of the double-arch corrugated boards are remarkably improved.

Description

Technical Field

[0001] This utility model relates to a processing equipment, and more particularly to a double-arched corrugated cardboard processing equipment. Background Technology

[0002] With the continuous development of the packaging industry, corrugated boxes are becoming increasingly widely used, especially heavy-duty corrugated boxes, which are widely applied in agriculture, industry, and military fields. Heavy-duty corrugated boxes contain goods weighing several hundred kilograms or more, requiring high physical properties such as bursting strength, puncture resistance, edge crush strength, and empty box compressive strength; some even meet the performance standards of wooden boxes. One of the main raw materials for heavy-duty corrugated boxes is corrugated base paper. Currently, domestic production of corrugated base paper mainly focuses on low basis weight. Low-basis-weight corrugated base paper allows glue to fully penetrate its interior, resulting in strong interlayer bonding and high ring crush strength, exceeding 10 N / m. Heavy-duty corrugated boxes have even higher requirements for the basis weight and ring crush strength of the corrugated base paper, typically requiring a basis weight of 200 g / m or more, a thickness of 0.3 mm or more, and a ring crush strength of 13 N / m or more. However, due to the thickness of the base paper, the sizing cannot fully penetrate into its interior, resulting in poor interlayer bonding, high water absorption, and significant susceptibility to environmental changes. Consequently, it is difficult to significantly improve the burst strength, puncture strength, edge crush strength, and empty box compressive strength. Utility Model Content

[0003] The purpose of this invention is to provide a double-arched corrugated cardboard processing equipment to solve the technical problems in the prior art.

[0004] This utility model provides a double-arched corrugated cardboard processing equipment, including a first corrugated paperboard receiving system, a second corrugated paperboard receiving system, and an inner linerboard receiving system. It also includes a corrugated paperboard gluing system, a composite system, and a single-corrugated cardboard forming system. The first corrugated paperboard receiving system outputs a first corrugated paperboard, the second corrugated paperboard receiving system outputs a second corrugated paperboard, the inner linerboard receiving system outputs an inner linerboard, the corrugated paperboard gluing system applies glue to the first corrugated paperboard, the composite system combines the first and second corrugated paperboards to form a composite corrugated paperboard, and the single-corrugated cardboard forming system bonds the inner linerboard to the composite corrugated paperboard.

[0005] In the aforementioned double-arch corrugated cardboard processing equipment, preferably, a first guide roller, a second guide roller, a first heating cylinder, a second heating cylinder, and a third guide roller are sequentially arranged between the first corrugated base paper receiving system and the corrugated base paper gluing system. Supersaturated steam is introduced into the first heating cylinder, and a first wrap angle adjusting roller is installed next to the first heating cylinder. A second wrap angle adjusting roller is provided next to the second heating cylinder.

[0006] In the aforementioned double-arch corrugated cardboard processing equipment, preferably, the corrugated base paper gluing system includes a gluing pressure roller, a first gluing roller, a first gluing roller, and a first glue basin. The surface of the first gluing roller is engraved with a mesh pattern with a mesh line count of 40-50 lines. The first glue basin contains glue. The first gluing roller and the first gluing roller are partially immersed in the glue. The gluing pressure roller is mounted above the first gluing roller via two cylinders.

[0007] In the aforementioned double-arch corrugated cardboard processing equipment, preferably, a fourth guide roller, a fifth guide roller, and a sixth guide roller are sequentially arranged between the second corrugated paper base paper receiving system and the composite system.

[0008] In the aforementioned double-arch corrugated cardboard processing equipment, preferably, the composite system includes a composite roller, a composite pressure roller, and a third heating cylinder. The composite roller is connected to a motor via a synchronous belt, the composite pressure roller is mounted above the composite roller via two cylinders, and supersaturated steam is introduced into the third heating cylinder.

[0009] In the aforementioned double-arch corrugated cardboard processing equipment, preferably, a seventh guide roller, an eighth guide roller, a fourth heating cylinder, and a ninth guide roller are sequentially arranged between the inner linerboard feeding system and the single-corrugated cardboard forming system.

[0010] In the aforementioned double-arch corrugated cardboard processing equipment, preferably, the single-corrugated cardboard forming system includes a tenth guide roller, an eleventh guide roller, a lower corrugated roller, an upper corrugated roller, a second glue-applying roller, a second glue-spreading roller, a second glue basin, a twelfth guide roller, and a pressure roller. The tenth guide roller and the eleventh guide roller are disposed on the paper feeding side of the lower corrugated roller, the upper corrugated roller is disposed above the lower corrugated roller, the second glue-applying roller and the second glue-spreading roller are partially immersed in the glue in the second glue basin, and the pressure roller is disposed above the upper corrugated roller.

[0011] Compared with existing technologies, this utility model includes a first corrugated paperboard splicing system, a second corrugated paperboard splicing system, and an inner linerboard splicing system. It also includes a corrugated paperboard gluing system, a composite system, and a single-wall corrugated board forming system. The first corrugated paperboard splicing system outputs the first corrugated paperboard; the second corrugated paperboard splicing system outputs the second corrugated paperboard; the inner linerboard splicing system outputs the inner linerboard; the corrugated paperboard gluing system applies glue to the first corrugated paperboard; the composite system combines the first and second corrugated paperboards to form a composite corrugated paperboard; and the single-wall corrugated board forming system bonds the inner linerboard to the composite corrugated paperboard. The double-arch corrugated cardboard produced by this utility model exhibits high strength, good toughness, a ring crush strength exceeding 13 N / m, and significantly improved puncture strength, edge crush strength, and empty box compressive strength. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of reference numerals in the attached drawings: 1. First feeding system for corrugated paper base; 2. Second feeding system for corrugated paper base; 3. First guide roller; 4. Second guide roller; 5. First wrap angle adjusting roller; 6. First heating cylinder; 7. Second wrap angle adjusting roller; 8. Second heating cylinder; 9. Third guide roller; 10. Glue applying roller; 11. First glue spreading roller; 12. First glue basin; 13. Fourth guide roller; 14. Fifth guide roller; 15. Sixth guide roller; 16. Composite system including composite roller; 17. Composite pressure roller; 18. 19. Third heating cylinder, 20. Tenth guide roller, 21. Eleventh guide roller, 22. Lower corrugated roller, 23. Upper corrugated roller, 24. Second glue coating roller, 25. Second glue leveling roller, 26. Second glue basin, 27. Inner linerboard feeding system, 28. Seventh guide roller, 29. Eighth guide roller, 30. Fourth heating cylinder, 31. Ninth guide roller, 32. Twelfth guide roller, 33. Pressure roller, 34. Thirteenth guide roller, 35. Fourteenth guide roller, 36. Sixteenth guide roller, 37. Eighteenth guide roller. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0015] Embodiments of this utility model: such as Figure 1 As shown, a double-arched corrugated cardboard processing equipment includes a first corrugated paperboard receiving system 1, a second corrugated paperboard receiving system 2, an inner linerboard receiving system 27, a corrugated paperboard gluing system, a composite system, and a single-corrugated cardboard forming system.

[0016] The first corrugated paper receiving system 1 is used to output the first corrugated paper, the second corrugated paper receiving system 2 is used to output the second corrugated paper, the inner linerboard receiving system 27 is used to output the inner linerboard, the corrugated paper gluing system is used to apply glue to the first corrugated paper, the composite system is used to combine the first corrugated paper and the second corrugated paper together to form composite corrugated paper, and the single corrugated board forming system is used to bond the inner linerboard and the composite corrugated paper together to form double-arched corrugated board.

[0017] Specifically, a first guide roller 3, a second guide roller 4, a first heating cylinder 6, a second heating cylinder 8, and a third guide roller 9 are sequentially arranged between the first receiving system 1 and the corrugated base paper coating system. The first heating cylinder 6 is filled with supersaturated steam. A first wrap angle adjusting roller 5 is installed next to the first heating cylinder 6. The first wrap angle adjusting roller 5 is connected to an independent motor and can adjust its angle within a certain range, thereby adjusting the drying area of ​​the corrugated paper. A second wrap angle adjusting roller 7 is provided next to the second heating cylinder 8. The second wrap angle adjusting roller 7 is connected to an independent motor and can adjust its angle within a certain range, thereby adjusting the drying area of ​​the corrugated paper. The angle adjustment principle of the first wrap angle adjusting roller 5 and the second wrap angle adjusting roller 7 is existing technology.

[0018] The first corrugated base paper receiving system 1 outputs the first corrugated base paper. The first corrugated base paper passes through the first guide roller 3 and the second guide roller 4 to reach the first heating cylinder 6. Supersaturated steam is introduced into the first heating cylinder 6, and the first corrugated base paper comes into contact with the cylinder and is heated and flattened. The wrap angle adjusting roller 5 next to the first heating cylinder 6 can adjust the wrap angle of the first corrugated base paper. By adjusting the wrap angle, the baked area of ​​the first corrugated base paper is adjusted to increase the base paper temperature, creating better bonding conditions for the first corrugated base paper lamination. The heated first corrugated base paper is then further baked and heated by the second heating cylinder 8, further increasing its surface temperature. Similarly, the second wrap angle adjusting roller 7 next to the second heating cylinder 8 can also automatically adjust the wrap angle.

[0019] Furthermore, the corrugated base paper coating system includes a coating pressure roller 10, a first even glue roller 11, a first coating roller 12, and a first glue basin 13. The surface of the first coating roller 12 is engraved with a mesh pattern, with a mesh line count of 40-50 lines, preferably 45 lines in this embodiment. The first coating roller 12 is connected to an independent motor via a synchronous belt to generate coating power. The first glue basin 13 contains a high-toughness, high-water-resistant composite glue. The first coating roller 12 and the first even glue roller 11 are partially immersed in the glue. The coating pressure roller 10 is mounted above the first coating roller 12 via two cylinders. When the cylinder shaft extends, the coating pressure roller 10 presses against the first coating roller 12. When the cylinder shaft retracts, the coating pressure roller 10 separates from the first coating roller 12.

[0020] After the heated first corrugated base paper separates from the second heating cylinder 8, it is guided by the third paper guide roller 9 and passes between the glue coating roller 10 and the first glue coating roller 12. When the first glue coating roller 12 rotates, it will be covered with glue. The amount of glue on the surface of the first glue coating roller 12 is determined by the first glue leveling roller 11. The larger the gap between the first glue leveling roller 11 and the first glue coating roller 12, the larger the amount of glue, and vice versa.

[0021] The gap between the glue-coating roller 10 and the first glue-coating roller 12 can be adjusted by adjusting the stroke of the cylinders at both ends of the glue-coating roller 10, ensuring that the two rollers are fully pressed together, so that the glue in the mesh of the first glue-coating roller 12 is fully sucked out and transferred to the glue-coating surface of the first corrugated base paper.

[0022] The second receiving system 2 for corrugated paper base is connected to the composite system by a fourth guide roller 14, a fifth guide roller 15, and a sixth guide roller 16.

[0023] The second corrugated base paper receiving system 2 outputs the second corrugated base paper, which is then laminated with the glued first corrugated base paper at the laminating system via the fourth guide roller 14, the fifth guide roller 15 and the sixth guide roller 16.

[0024] The composite system includes a composite roller 17, a composite pressure roller 18, and a third heating cylinder 19. The composite roller 17 is connected to an independent motor via a synchronous belt. The composite pressure roller 18 is mounted above the composite roller 17 via two cylinders. When the cylinder shafts extend, the composite pressure roller 18 presses against the composite roller 17. When the cylinder shafts retract, the composite pressure roller 18 separates from the composite roller 17. Supersaturated steam is introduced into the third heating cylinder 19, which is located downstream of the composite roller 17 and the composite pressure roller 18.

[0025] The second corrugated base paper and the first corrugated base paper, which has already been coated with adhesive, pass simultaneously between the composite roller 17 and the composite pressure roller 18. The compression by the composite roller 17 and the composite pressure roller 18 forms a partially bonded composite corrugated paper. Adjusting the cylinder stroke at both ends of the composite pressure roller 18 effectively regulates the gap between the composite pressure roller 18 and the composite roller 17, thus ensuring the bonding quality. The partially bonded composite corrugated paper is then heated again in the third heating cylinder 19 to improve its initial bond strength. Because the adhesive inside the composite corrugated paper is not completely dried, the initial bond strength continues to increase as moisture evaporates.

[0026] The inner linerboard feeding system 27 and the single corrugated board forming system are sequentially connected by a seventh guide roller 28, an eighth guide roller 29, a fourth heating cylinder 30, and a ninth guide roller 31.

[0027] The inner linerboard feeding system 27 is used to provide the inner linerboard. The inner linerboard passes through the seventh guide roller 28 and the eighth guide roller 29 to reach the fourth heating cylinder 30. The fourth heating cylinder 30 heats and flattens the inner linerboard. The heated inner linerboard passes through the ninth guide roller 31 to reach the single corrugated board forming system.

[0028] The single-corrugated cardboard forming system includes a tenth guide roller 20, an eleventh guide roller 21, a lower corrugated roller 22, an upper corrugated roller 23, a second glue-applying roller 24, a second glue-spreading roller 25, a second glue basin 26, a twelfth guide roller 32, and a pressure roller 33. The tenth guide roller 20 and the eleventh guide roller 21 are located on the paper feed side of the lower corrugated roller 22, the upper corrugated roller 23 is located above the lower corrugated roller 22, the second glue-applying roller 24 and the second glue-spreading roller 25 are partially immersed in the glue in the second glue basin 26, and the pressure roller 33 is located above the upper corrugated roller 23.

[0029] The lower corrugated roller 22 is connected to an independent motor via a synchronous belt. The lower corrugated roller 22 is the driving roller, and the upper corrugated roller 23 is the driven roller. Cylinders are connected to both ends of the rotating shaft of the upper corrugated roller 23. The opening and closing of the two corrugated rollers are controlled by the cylinders at both ends of the upper corrugated roller 23. Vacuum adsorption grooves are opened on the circumference of the lower corrugated roller 22 and the upper corrugated roller 23, and several small holes are opened between the grooves. A high-power fan draws air from the inside of the lower corrugated roller 22 and the upper corrugated roller 23 to the outside, so that a vacuum negative pressure is formed inside them, ensuring that the composite corrugated paper is tightly attached to the corrugated surface of the corrugated roller. The composite corrugated paper is heated and squeezed by the lower corrugated roller 22 and the upper corrugated roller 23 to form a wavy corrugated paper. It should be noted that the surface of the composite corrugated paper in contact with the upper corrugated roller 23 is always flat. Only the surface of the composite corrugated paper in contact with the lower corrugated roller 22 is squeezed to form a wavy structure.

[0030] The second coating roller 24 and the second leveling roller 25 are partially immersed in the glue in the second glue basin 26. The second coating roller 24 is connected to an independent motor via a synchronous belt, and the second leveling roller 25 is connected to an independent motor via a synchronous belt. The speed difference between the two rollers can be matched by adjusting the speed of the two motors. The pressure can be adjusted by a cylinder. The pressure roller 33 is located above the upper corrugated roller 23. The pressure roller 33 is connected to an independent motor via a synchronous belt. The pressure roller 33 can be separated from the upper corrugated roller 23, and the pressure can be adjusted by a hydraulic system.

[0031] When the wavy side of the composite corrugated paper passes through the second glue roller 24, the second glue roller 24 applies glue to the wavy side of the composite corrugated paper. After the inner linerboard passes through the twelfth guide roller 32, it is bonded to the glued composite corrugated paper by the pressure roller 33 to form a double-arch composite single-corrugated cardboard.

[0032] The working principle of this utility model is as follows: The first corrugated paperboard receiving system 1 outputs the first corrugated paperboard. The first corrugated paperboard passes through the first guide roller 3 and the second guide roller 4 to reach the first heating cylinder 6. Before contacting the first heating cylinder 6, the first corrugated paperboard automatically adjusts the wrap angle by the wrap angle adjusting roller 5. Then, the first corrugated paperboard contacts the first heating cylinder 6 and is heated and flattened. The heated first corrugated paperboard passes through the second wrap angle adjusting roller 7 for automatic wrap angle adjustment, and then passes through the second heating cylinder 8 for further baking and heating, which further increases its surface temperature.

[0033] After the heated first corrugated base paper separates from the second heating cylinder 8, it is guided by the third guide roller 9 and passes between the glue coating roller 10 and the first glue coating roller 12. As the first glue coating roller 12 rotates, it picks up glue, and the amount of glue on its surface is determined by the first even-coating roller 11. The cooperation between the glue coating roller 10 and the first glue coating roller 12 ensures that the glue in the weave of the first glue coating roller 12 is fully extracted and transferred to the glued surface of the first corrugated base paper.

[0034] The second corrugated base paper feeding system 2 outputs a second corrugated base paper. This second corrugated base paper, along with the glued first corrugated base paper, passes simultaneously between the composite roller 17 and the composite pressure roller 18 via the fourth guide roller 14, the fifth guide roller 15, and the sixth guide roller 16. The compression by the composite roller 17 and the composite pressure roller 18 forms a partially bonded composite corrugated paper. This partially bonded composite corrugated paper is then reheated in the third heating cylinder 19 to improve its initial tack strength.

[0035] After passing through the tenth guide roller 20 and the eleventh guide roller 21, the composite corrugated paper is absorbed by the lower corrugated roller 22. Under the heating and extrusion of the lower corrugated roller 22 and the upper corrugated roller 23, the surface of the composite corrugated paper in contact with the lower corrugated roller 22 is squeezed to form a wavy structure. When the wavy surface of the composite corrugated paper passes through the second glue-coating roller 24, the second glue-coating roller 24 brushes glue onto the wavy surface of the composite corrugated paper.

[0036] The inner linerboard feeding system 27 provides the inner linerboard. The inner linerboard passes through the seventh guide roller 28 and the eighth guide roller 29 to reach the fourth heating cylinder 30. The fourth heating cylinder 30 heats and flattens the inner linerboard. After being heated, the inner linerboard passes through the ninth guide roller 31 and the twelfth guide roller 32 and is then bonded to the composite corrugated paper with glue applied by the pressure roller 33 to form a double-arch composite single corrugated cardboard.

[0037] The double-arch composite single corrugated cardboard is conveyed forward through the thirteenth guide roller 34, the fourteenth guide roller 35, the sixteenth guide roller 36 and the eighteenth guide roller 37 into the downward transfer process.

[0038] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A double-arch corrugated cardboard processing equipment, comprising a first corrugated paperboard splicing system (1), a second corrugated paperboard splicing system (2), and an inner linerboard splicing system (27), characterized in that: It also includes corrugated base paper coating systems, composite systems, and single-wall corrugated board forming systems; The first corrugated paper receiving system (1) is used to output the first corrugated paper, the second corrugated paper receiving system (2) is used to output the second corrugated paper, the inner linerboard receiving system (27) is used to output the inner linerboard, the corrugated paper gluing system is used to apply glue to the first corrugated paper, the composite system is used to combine the first corrugated paper and the second corrugated paper together to form a composite corrugated paper, and the single corrugated paperboard forming system is used to bond the inner linerboard and the composite corrugated paper together.

2. The double-arch corrugated cardboard processing equipment according to claim 1, characterized in that: The first receiving system (1) for corrugated paper base is sequentially provided with a first guide roller (3), a second guide roller (4), a first heating cylinder (6), a second heating cylinder (8), and a third guide roller (9). The first heating cylinder (6) is filled with supersaturated steam. A first wrap angle adjustment roller (5) is installed next to the first heating cylinder (6), and a second wrap angle adjustment roller (7) is provided next to the second heating cylinder (8).

3. The double-arch corrugated cardboard processing equipment according to claim 2, characterized in that: The corrugated base paper coating system includes a coating pressure roller (10), a first glue-spreading roller (11), a first coating roller (12), and a first glue basin (13). The surface of the first coating roller (12) is engraved with a mesh pattern with a mesh line count of 40-50 lines. The first glue basin (13) is filled with glue. The first coating roller (12) and the first glue-spreading roller (11) are partially immersed in the glue. The coating pressure roller (10) is mounted above the first coating roller (12) by two cylinders.

4. The double-arch corrugated cardboard processing equipment according to claim 3, characterized in that: The second receiving system (2) for corrugated paper base is provided with a fourth guide roller (14), a fifth guide roller (15) and a sixth guide roller (16) in sequence between the composite system.

5. The double-arch corrugated cardboard processing equipment according to claim 4, characterized in that: The composite system includes a composite roller (17), a composite pressure roller (18), and a third heating cylinder (19). The composite roller (17) is connected to a motor via a synchronous belt. The composite pressure roller (18) is mounted above the composite roller (17) via two cylinders. Supersaturated steam is introduced into the third heating cylinder (19).

6. The double-arch corrugated cardboard processing equipment according to claim 5, characterized in that: The inner linerboard feeding system (27) and the single-wall corrugated board forming system are sequentially provided with a seventh guide roller (28), an eighth guide roller (29), a fourth heating cylinder (30) and a ninth guide roller (31).

7. The double-arch corrugated cardboard processing equipment according to claim 6, characterized in that: The single-corrugated cardboard forming system includes a tenth guide roller (20), an eleventh guide roller (21), a lower corrugated roller (22), an upper corrugated roller (23), a second glue-applying roller (24), a second glue-spreading roller (25), a second glue basin (26), a twelfth guide roller (32), and a pressure roller (33). The tenth guide roller (20) and the eleventh guide roller (21) are located on the paper feed side of the lower corrugated roller (22). The upper corrugated roller (23) is located above the lower corrugated roller (22). The second glue-applying roller (24) and the second glue-spreading roller (25) are partially immersed in the glue in the second glue basin (26). The pressure roller (33) is located above the upper corrugated roller (23).

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