Corrugated paperboard machine capable of improving ridge tip attaching quality and efficiency

Abstract

The utility model discloses a corrugated paperboard machine capable of improving the corrugated tip attaching quality and efficiency, which comprises a corrugating machine, a corrugated paper box, a corrugated paper box and a corrugated paper box, the surface paper attaching and gluing assembly is used for pasting the edge tips of the corrugated paper; the sticking and pressing mechanism is used for thermally pressing the corrugated paper coated with the pulp and the surface paper and conveying the corrugated paper and the surface paper outwards; the pre-gelatinization device is used for carrying out high-temperature steam heating on the corrugated tip pasting surface of the corrugated paper before the corrugated paper enters the sticking and pressing mechanism in advance, so that the pasting surface is gelatinized in advance. According to the advanced gelatinization device, high-temperature steam heating is carried out on the paste on the corrugated tip of the corrugated paper in advance, so that the paste coating surface is gelatinized in advance, the gelatinized paste on the corrugated tip can be well attached to the surface paper, the paste can be solidified after being further heated, and the attaching efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to a corrugated cardboard machine with tip-to-tip bonding, and more particularly to a corrugated cardboard machine that can improve the quality and efficiency of tip bonding. Background Technology

[0002] Currently, a new type of corrugated cardboard with flute-to-flute construction is emerging in the market. Taking four-layer corrugated cardboard as an example, it consists of a face paper, a liner paper, and two layers of corrugated paper located between the face paper and the liner paper with their flute tips touching. Because the flute tips of the two middle layers of cardboard are opposite each other, they provide good support. Therefore, it can replace the traditional five-layer cardboard.

[0003] However, in the production process of two layers of corrugated paper with the flute tips touching, it is necessary to first process two layers of corrugated paper with the flute tips touching (in this state, the paperboard is prone to expansion and contraction), and then attach the face paper to form three layers of corrugated paper with the flute tips touching. Among these, it is particularly crucial that the two layers of corrugated paper with the flute tips touching can be attached to the face paper in the shortest path and at the fastest speed; because only after being fixedly attached to the face paper will the two layers of corrugated paper with the flute tips touching not deform.

[0004] Chinese Patent No. CN202323046881.4, published on September 17, 2024, discloses a multi-functional corrugating machine for producing tip-to-tip corrugated cardboard. The machine includes a corrugating roller for processing a first core paper and a second core paper into a corrugated shape, a gluing mechanism for applying glue to the first and second core papers, and a pressing mechanism for bonding the two layers of tip-to-tip core paper to the face paper. The first and second core papers are processed by the gluing mechanism and the corrugating roller to form two layers of tip-to-tip core paper. The pressing mechanism is equipped with a power unit that drives the pressing mechanism to rotate synchronously with the corrugating roller, causing the two layers of core paper located between the pressing mechanism and the corrugating roller to move synchronously and be pressed together with the face paper. In this structure, the pressing mechanism is positioned close to the tip-to-tip core paper, resulting in a short bonding path and requiring high heating efficiency. Otherwise, insufficient time for the glue to gelatinize and dry will lead to weak bonding between the face paper and the tip-to-tip core paper, causing deformation of the cardboard. Therefore, the above structure needs further optimization. Utility Model Content

[0005] The purpose of this utility model is to provide a corrugated cardboard machine with a simple and reasonable structure, which pre-treats the corrugated tips of the corrugated paper with paste, improves the efficiency and quality of face paper bonding, and can improve the bonding quality and efficiency of corrugated tips.

[0006] The purpose of this utility model is achieved as follows:

[0007] A corrugated board machine that can improve the quality and efficiency of corrugated tip bonding includes: a corrugator for outputting corrugated paper;

[0008] The paper lamination and adhesive assembly is used to apply paste to the corrugated tips of corrugated paper;

[0009] The bonding and pressing mechanism is used to heat-press the coated corrugated paper and the face paper together and then convey them outwards.

[0010] It also includes a pre-gelatinization device, which is used to preheat the coated surface of the corrugated paper with high-temperature steam before it enters the bonding and pressing mechanism, so that the coated surface is gelatinized in advance.

[0011] The objective of this utility model can also be achieved by the following technical measures:

[0012] As a more specific embodiment, the pre-gelatinization device includes a steam pipe with an injection port.

[0013] As a further embodiment, the adhesive pressing mechanism is provided with an adhesive pressing channel, and the pre-gelatinization device is located near the input port of the adhesive pressing channel.

[0014] As a further embodiment, the corrugating machine is a tip-to-tip corrugated cardboard machine, which includes a first corrugated roll group, a second corrugated roll group, and a corrugated paper gluing assembly;

[0015] The first corrugated roll group includes a first lower corrugated roll and a first upper corrugated roll, and a first wave-forming channel is formed between the first lower corrugated roll and the first upper corrugated roll to heat-press the first core paper into a wave shape.

[0016] The second corrugated roll assembly includes a second lower corrugated roll and a second upper corrugated roll, and a second wave-forming channel is formed between the second lower corrugated roll and the second upper corrugated roll to heat-press the second core paper into a wave shape.

[0017] The corrugated paper gluing assembly is located beside the second upper corrugated roll or the first upper corrugated roll and is used to apply glue to the corrugated tips of the corrugated second core paper or the first core paper.

[0018] The first and second upper corrugated rolls have their flute tips facing each other and forming a corrugated paper forming channel to bond the two corrugated core paper sheets, after the flute tips are coated with glue, together and output them.

[0019] As a further embodiment, the bonding and pressing mechanism includes a traction belt, a power roller, and a heating roller. The traction belt is wound around the power roller and the heating roller, and at least a section of it is close to the first upper corrugated roller. The bonding and pressing channel is formed between the traction belt and the first upper corrugated roller. The pre-gelatinization device and the face paper bonding and gluing assembly are sequentially arranged between the input port of the bonding and pressing channel and the output port of the corrugated paper forming channel.

[0020] As a further embodiment, the adhesive pressing mechanism also includes a corner pressure roller, and the traction belt is also wrapped around the corner pressure roller. The heating roller and the corner pressure roller are distributed around the outer periphery of the first upper corrugated roller. The adhesive pressing channel is formed between the traction belt between the outer sides of the heating roller and the corner pressure roller and the outer periphery of the first upper corrugated roller.

[0021] As a further embodiment, the angle α at which the traction belt wraps around the first upper corrugated roller is 90 degrees to 120 degrees.

[0022] As a further embodiment, the steam pipe is provided with a protective cover, and the protective cover has an opening on one side corresponding to the injection port.

[0023] As a further embodiment, the heating roller is located at the inlet of the adhesive channel.

[0024] The beneficial effects of this utility model are as follows:

[0025] (1) The pre-gelatinization device of this utility model preheats the paste on the flute tip of the corrugated paper with high temperature steam, so that the coating surface is gelatinized in advance. After the paste on the flute tip is gelatinized, it can be well bonded with the face paper. After further heating, it can be solidified, thereby improving the bonding efficiency and quality.

[0026] (2) The pre-gelatinization device of this utility model gelatinizes the glue in advance by spraying high-temperature steam, and the water content does not change much, which does not affect the subsequent penetration of glue, shortens the glue gelatinization time, and achieves the purpose of increasing production speed. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0028] Figure 2 for Figure 1 Enlarged structural diagram at point E in the middle. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] See Figure 1 and Figure 2 As shown, a corrugated board machine that can improve the quality and efficiency of corrugated tip bonding includes: a corrugator for outputting corrugated paper;

[0031] The paper lamination and adhesive assembly 7 is used to apply paste to the corrugated tips of the corrugated paper;

[0032] The bonding and pressing mechanism 8 is used to heat-press the coated corrugated paper and the face paper 93 together and then convey them outwards.

[0033] It also includes a pre-gelatinization device 20, which is used to preheat the coating surface of the corrugated paper before it enters the bonding and pressing mechanism 8 with high-temperature steam, so that the coating surface is gelatinized in advance.

[0034] The pre-gelatinization device 20 includes a steam pipe with an injection port. A protective cover is provided outside the steam pipe, and an opening is provided on the side of the protective cover corresponding to the injection port.

[0035] The adhesive pressing mechanism 8 is provided with an adhesive pressing channel, and the pre-gelatinization device 20 is located near the input port of the adhesive pressing channel.

[0036] The corrugating machine is a corrugated tip-to-corrugated cardboard machine, which includes a first corrugated roll group, a second corrugated roll group and a corrugated paper gluing assembly 6;

[0037] The first corrugated roll group includes a first lower corrugated roll 12 and a first upper corrugated roll 1, and a first wave-forming channel is formed between the first lower corrugated roll 12 and the first upper corrugated roll 1 to heat press the first core paper 910 into a wave shape.

[0038] The second corrugated roll assembly includes a second lower corrugated roll 25 and a second upper corrugated roll 2, with a second corrugated forming channel formed between the second lower corrugated roll 25 and the second upper corrugated roll 2 to heat press the second core paper 920 into a corrugated shape.

[0039] The corrugated paper gluing assembly 6 is located beside the second upper corrugated roll 2 or the first upper corrugated roll 1 and is used to apply glue to the corrugated tips of the corrugated second core paper 920 or the first core paper 910.

[0040] The first upper corrugated roller 1 and the second upper corrugated roller 2 have their flute tips facing each other and form a corrugated paper forming channel 10, so as to bond the two corrugated core paper flute tips together after the flute tips are coated with glue, and then output them.

[0041] The bonding and pressing mechanism 8 includes a traction belt 81, a power roller 82, and a heating roller 83. The traction belt 81 is wound around the power roller 82 and the heating roller 83, and at least a section of it is close to the first upper corrugated roller 1. The bonding and pressing channel is formed between the traction belt 81 and the first upper corrugated roller 1. The pre-gelatinization device 20 and the face paper bonding and gluing assembly are sequentially arranged between the input port of the bonding and pressing channel and the output port of the corrugated paper forming channel 10.

[0042] The adhesive pressing mechanism 8 also includes a corner pressure roller 84, and the traction belt 81 is also wrapped around the corner pressure roller 84. The heating roller 83 and the corner pressure roller 84 are distributed around the outer periphery of the first upper corrugated roller 1. The traction belt 81 between the outer sides of the heating roller 83 and the corner pressure roller 84 forms the adhesive pressing channel with the outer periphery of the first upper corrugated roller 1.

[0043] As a further embodiment, the angle α at which the traction belt 81 wraps around the first upper corrugated roller 1 is 90 degrees to 120 degrees.

[0044] The heating roller 83 is located at the inlet of the adhesive channel.

[0045] Its working principle is: See Figure 1As shown, the first upper corrugated roller 1 rotates in the direction of arrow R1, the second upper corrugated roller 2 rotates in the direction of arrow R2, and the power roller 82 of the adhesive pressing mechanism 8 rotates in the direction of arrow R3. The direction of arrow R1 is opposite to the direction of arrow R2, and the direction of arrow R3 is opposite to the direction of arrow R1. The first core paper 910 enters between the first lower corrugated roll 12 and the first upper corrugated roll 1 in the direction of arrow A to form the first single-layer corrugated paper 91. The second core paper 920 enters between the second lower corrugated roll 25 and the second upper corrugated roll 2 in the direction of arrow B to form the second single-layer corrugated paper 92. The first single-layer corrugated paper 91 directly enters between the first upper corrugated roll 1 and the second upper corrugated roll 2 around the first upper corrugated roll 1. While the outer corner of the second single-layer corrugated paper 92 is being sized by the corrugated paper gluing assembly 6, it enters between the first upper corrugated roll 1 and the second upper corrugated roll 2 around the second upper corrugated roll 2. Under the heating of the first upper corrugated roll 1 and the second upper corrugated roll 2 and the joint extrusion of the corners, the corners of the first single-layer corrugated paper 91 and the second single-layer corrugated paper 92 are brought together to form a corrugated paper with corners facing each other.

[0046] The corrugated paper, tip to tip, continues to wrap around the first upper corrugating roller 1, and then sequentially passes through the second gluing assembly 7 (the glue applied is raw glue, which needs to be heated and gelatinized before bonding) and the pre-gelatinization device 20 before entering the bonding channel. The second gluing assembly 7 applies sizing to the other side of the corrugated paper 92 of the second single-layer corrugated paper before it enters the bonding channel; then, the pre-gelatinization device 20 sprays high-temperature steam into the glue (paste) G at the corrugated tips (see... Figure 2 As indicated by arrow F in the middle, this allows the adhesive to gelatinize before entering the traction belt, without significantly altering its moisture content, thus preserving the penetration of subsequent adhesives, shortening the gelatinization time, and ultimately increasing production speed.

[0047] The face paper 93 is conveyed along the direction of arrow C and enters the bonding channel with the corrugated paper tip to tip coated with paste-coated glue. During this process, the glue will penetrate into the paper and then be heated, squeezed, bonded and cured to form the corrugated three-layer corrugated cardboard 9. The corrugated three-layer corrugated cardboard 9 is output along the direction of arrow D.

[0048] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A corrugated cardboard machine that improves the quality and efficiency of tip bonding, comprising: Corrugating machines are used to output corrugated paper. The paper bonding and gluing assembly (7) is used to apply paste to the corrugated tips of the corrugated paper; The bonding and pressing mechanism (8) is used to heat-press the coated corrugated paper and the face paper (93) together and transport them outwards; Its features include: a pre-gelatinization device (20) for preheating the corrugated surface of the paper before it enters the bonding and pressing mechanism (8) with high-temperature steam, so that the coating surface is pre-gelatinized.

2. The corrugated cardboard machine according to claim 1, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The pre-gelatinization device (20) includes a steam pipe with an injection port.

3. The corrugated cardboard machine according to claim 1 or 2, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The adhesive pressing mechanism (8) is provided with an adhesive pressing channel, and the pre-gelatinization device (20) is located near the input port of the adhesive pressing channel.

4. The corrugated cardboard machine according to claim 3, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The corrugating machine is a corrugated tip to corrugated tip cardboard machine, which includes a first corrugated roll group, a second corrugated roll group and a corrugated paper gluing assembly (6). The first corrugated roll group includes a first lower corrugated roll (12) and a first upper corrugated roll (1), and a first wave-forming channel is formed between the first lower corrugated roll (12) and the first upper corrugated roll (1) to heat press the first core paper (910) into a wave shape; The second corrugated roll assembly includes a second lower corrugated roll (25) and a second upper corrugated roll (2), and a second corrugated forming channel is formed between the second lower corrugated roll (25) and the second upper corrugated roll (2) to heat press the second core paper (920) into a corrugated shape; The corrugated paper gluing assembly (6) is located beside the second upper corrugated roll (2) or the first upper corrugated roll (1) and is used to apply glue to the corrugated tips of the corrugated second core paper (920) or the first core paper (910). The first upper corrugated roller (1) and the second upper corrugated roller (2) have their corrugated tips facing each other and form a corrugated paper forming channel (10) to bond the two corrugated core paper sheets with glue applied to their tips together and output them.

5. The corrugated cardboard machine according to claim 4, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The bonding and pressing mechanism (8) includes a traction belt (81), a power roller (82) and a heating roller (83). The traction belt (81) is wrapped around the power roller (82) and the heating roller (83) and at least one section is close to the first upper corrugated roller (1). The bonding and pressing channel is formed between the traction belt (81) and the first upper corrugated roller (1). The pre-gelatinization device (20) and the face paper bonding and gluing assembly are sequentially arranged between the input port of the bonding and pressing channel and the output port of the corrugated paper forming channel (10).

6. The corrugated cardboard machine according to claim 5, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The adhesive pressing mechanism (8) further includes a corner pressure roller (84), and the traction belt (81) is also wrapped around the corner pressure roller (84). The heating roller (83) and the corner pressure roller (84) are distributed around the outer periphery of the first upper corrugated roller (1). The traction belt (81) between the outer sides of the heating roller (83) and the corner pressure roller (84) forms the adhesive pressing channel with the outer periphery of the first upper corrugated roller (1).

7. The corrugated cardboard machine according to claim 6, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The angle α at which the traction belt (81) wraps around the first upper corrugated roller (1) is 90 degrees to 120 degrees.

8. The corrugated cardboard machine according to claim 2, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The steam pipe is equipped with a protective cover, and the protective cover has an opening on the side corresponding to the injection port.

9. The corrugated cardboard machine according to claim 5, which improves the bonding quality and efficiency of the corrugated tips, is characterized in that: The heating roller (83) is located at the inlet of the adhesive channel.

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