Double-layer corrugated paper production mechanism and corrugated paper board production line applying same

Abstract

The utility model provides a double-layer corrugated paper production mechanism and a corrugated paper board production line applying the same, which comprises a corrugated roller, a corrugated peak a of a corrugated tooth of the corrugated roller is arranged to be a plane, so that a corrugated peak b of formed corrugated paper is also a plane; according to the corrugated roller, the corrugation peaks of the corrugation teeth are ground into planes, when two corrugating roller points are in butt joint in a tip-to-tip mode, the two corresponding corrugation peaks in the plane shape make parallel contact with each other to form face-to-face parallel attachment, and therefore the corrugation peaks of formed corrugated paper are also planes, and when the two pieces of corrugated paper are in butt joint and bonded, the corrugation peaks of the corrugated paper are not prone to deformation. According to the corrugated roller, the contact face is greatly increased through the planar ridges, bonding is very firm, based on the planar butt joint ridge structure, when two layers of corrugated rollers roll oppositely, the whole planar ridges are stressed integrally, stress is balanced and stable, it is ensured that the ridges of corrugated paper can be effectively aligned and cannot deviate, bonding pressure is enough, and the corrugated paper can be effectively bonded. And on the premise of effective alignment, firm bonding is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated rollers, in particular to a double-layer corrugated paper production mechanism and a corrugated paperboard production line using the same. Background Art

[0002] Corrugated boxes are the most widely used green and environmentally friendly packaging products. Corrugated boxes are made of corrugated paperboard, which is manufactured by corrugated paperboard production lines. The core of the corrugated paperboard production line is the corrugator, which uses corrugated rollers as core components, including middle corrugated rollers, outer corrugated rollers, pressure rollers, glue coating rollers, glue leveling rollers, etc.

[0003] Chinese patent CN210132826U discloses a novel corrugated roller, the corrugated rollers have different corrugation top arc radii, that is, the corrugation top arc radius of the middle corrugated roller of the corrugated roller is different from the corrugation top arc radius of the outer corrugated roller, and the absolute value of the difference between the two is greater than 0.05mm, and the corrugation top arc radius refers to the overall radius.

[0004] However, under the traditional structure, the top of the flute of the corrugated roller teeth is usually in an arc shape, so when the two corrugated rollers are butt-jointed to form double-layer corrugated paper, the tip bonding contact area of ​​the two layers of corrugated paper is small, and the bonding strength is very limited. Moreover, when the two corrugated rollers are pressed against each other, the force at the top of the flute will shift to both sides, making it difficult to align the tooth tips of the two layers of corrugated paper, which is worse than the point-to-point bonding method that is not easy to bond firmly. Utility Model Content

[0005] The utility model aims to provide a double-layer corrugated paper production mechanism and a corrugated board production line using the same in view of the deficiencies in the prior art. The flute peaks of the flute teeth are ground and processed into planes. When two corrugated rollers are butted against each other, the corresponding two plane-shaped flute peaks are in parallel contact with each other to form a "face-to-face" parallel fit, so that the flute peaks of the formed corrugated paper are also planes. When the two corrugated papers are butted and bonded, the flute peaks of the plane shape greatly increase the contact surface, and the bonding is very strong. Moreover, based on the flute peak structure of the plane butted, when the two layers of corrugated rollers are rolled against each other, the flute peaks of the entire plane shape are subjected to overall force, and the force is balanced and stable, ensuring that the flute peaks of the corrugated paper can be effectively aligned and will not deviate, and the bonding pressure is sufficient. Under the premise of effective alignment, firm bonding is further guaranteed, and the technical problems existing in the prior art that the arc-shaped flute teeth make the tip bonding contact surface of the two layers of corrugated paper small when the two corrugated rollers are butted against each other, and the force at the flute top is offset when the rollers are pressurized, resulting in difficulty in aligning the tooth tips, etc.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A double-layer corrugated paper production mechanism comprises: a corrugated paper forming part, the corrugated paper forming part comprises: a first corrugated roller and a second corrugated roller for cooperating to form a first corrugated paper, and a third corrugated roller and a fourth corrugated roller for cooperating to form a second corrugated paper; the first corrugated roller, the second corrugated roller, the third corrugated roller and the fourth corrugated roller all comprise: a roller body and corrugated teeth evenly arranged on the outer peripheral surface of the roller body; the corrugated peaks a of the corrugated teeth are arranged as a plane, so that the corrugated peaks b of the first corrugated paper formed by the first corrugated roller and the second corrugated paper formed by the third corrugated roller and the fourth corrugated roller are both planes.

[0008] Preferably, the corrugated paper forming part also includes: a first gluing mechanism for gluing the first corrugated paper; the first corrugated roller is arranged between the fourth corrugated roller and the second corrugated roller, the first corrugated roller and the fourth corrugated roller cooperate to form a bonding channel, the first corrugated paper after gluing is bonded with the second corrugated paper in the bonding channel to form a double-layer corrugated paper, and during bonding, the flute peaks b of the first corrugated paper and the second corrugated paper are bonded face to face and in parallel under the top action of the flute peaks a of the first corrugated roller and the fourth corrugated roller.

[0009] Preferably, the peak a is formed by grinding.

[0010] Preferably, the width dimension W of the peak a is 0.3-0.8 mm.

[0011] Preferably, W=0.49 mm.

[0012] Preferably, the distance L between two adjacent corrugated teeth is 3.5-7.5 mm.

[0013] Preferably, L=4.5 mm.

[0014] The utility model also provides a corrugated paperboard production line, comprising: a corrugated paper production mechanism as described in any one of the above, and also comprising: a second gluing mechanism arranged behind the bonding channel, the second gluing mechanism is used to glue the surface of the double-layer corrugated paper; a bottom paper unwinding part for unwinding and guiding the bottom paper; and a bottom paper bonding part for bonding the double-layer corrugated paper after gluing to the bottom paper.

[0015] Preferably, the base paper bonding part includes: a guide member; a flexible extrusion component arranged to match the shape of the guide member, a transportation channel is formed between the guide member and the flexible extrusion component; and a corrugated paper separator arranged after the double-layer corrugated paper and the base paper just come into contact and bonded, and receives the double-layer corrugated paper after bonding to enter the transportation channel; the base paper supplied by the base paper unwinding part is conveyed in the transportation channel in contact with the guide member, the double-layer corrugated paper after glue coating is bonded to the base paper to form a three-layer corrugated paper, and the double-layer corrugated paper bonded to the base paper is peeled off from the first corrugated roller by the corrugated paper separator and enters the transportation channel, so that the three-layer corrugated paper is pressed and bonded to the guide member by the flexible extrusion component, synchronously transmitted, and dried and shaped.

[0016] Preferably, the first corrugated roller is provided with a plurality of independent wind grooves along its circumferential direction, and a plurality of through holes connected with the wind grooves are provided on its roller surface. A wind shield mechanism is also provided on the side of the first corrugated roller. When in operation, the wind shield mechanism is used to produce wind adsorption effect on the first corrugated paper during the forming process, and produce wind blowing effect on the first corrugated paper during the bonding process between the first corrugated paper and the base paper.

[0017] Preferably, the wind hood mechanism includes an exhaust hood and a blowing hood. When the wind groove of the first corrugated roller rotates to the exhaust hood, the wind groove is connected with the exhaust hood, and the through hole generates adsorption force. When it rotates to the blowing hood, the wind groove is connected with the blowing hood, and the through hole blows air outward.

[0018] The beneficial effects of the utility model are:

[0019] (1) The utility model grinds the flute peaks of the flute teeth into a plane. When the two corrugated rollers are butted against each other, the corresponding two plane-shaped flute peaks are in parallel contact with each other, forming a "face-to-face" parallel fit, so that the flute peaks of the formed corrugated paper are also planes. When the two corrugated papers are butted and bonded, the plane-shaped flute peaks greatly increase the contact surface, and the bonding is very strong. Moreover, based on the flute peak structure of the plane butted, when the two layers of corrugated rollers roll against each other, the entire plane-shaped flute peaks are subjected to overall force, and the force is balanced and stable, ensuring that the flute peaks of the corrugated paper can be effectively aligned and will not deviate, and the bonding pressure is sufficient. Under the premise of effective alignment, strong bonding is further guaranteed;

[0020] (2) The utility model provides an air slot and a through hole on the first corrugated roller, and arranges an exhaust hood on the side thereof to generate an adsorption force in the through hole, so that the corrugated paper can be closely attached to the first corrugated roller during the process from corrugated paper forming to corrugated paper bonding, thereby avoiding the loose situation that causes unstable corrugated paper transmission, further improving the tip-to-tip stability of the corrugated paper, and arranging an air blowing hood on the side of the first corrugated roller so that the double-layer corrugated paper formed by bonding can be quickly separated from the first corrugated roller by blowing air outwards when it cannot quickly separate from the first corrugated roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the corrugated roller in the utility model;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0025] Figure 5 It is a schematic diagram of the forming of the peak a in the utility model;

[0026] Figure 6 This is a schematic diagram of the cooperation between the first corrugating roller and the fourth corrugating roller in the utility model;

[0027] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0028] Figure 8 It is a schematic structural diagram of the first corrugated roller in the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0031] Embodiment 1

[0032] A double-layer corrugated paper production mechanism, such as Figure 1 As shown, it includes: a corrugated paper forming part 1, the corrugated paper forming part 1 includes: a first corrugated roller 11 and a second corrugated roller 12 for forming a first corrugated paper 10, a third corrugated roller 13 and a fourth corrugated roller 14 for forming a second corrugated paper 20; Figure 2 As shown, the first corrugated roller 11, the second corrugated roller 12, the third corrugated roller 13 and the fourth corrugated roller 14 each include: a roller body 110 and corrugated teeth 120 evenly arranged on the outer circumference of the roller body 110;

[0033] like Figure 3-4 As shown, the peak a10a of the corrugated tooth 120 is set to be a plane, as shown in Figure 7 As shown, the flute peaks b20b of the first corrugated paper 10 formed by the cooperation of the first corrugated roller 11 and the second corrugated roller 12 and the second corrugated paper 20 formed by the cooperation of the third corrugated roller 13 and the fourth corrugated roller 14 are both plane.

[0034] In this embodiment, by setting the peak a10a of the corrugated teeth 120 of each corrugated roller to be a plane, based on this structure:

[0035] When the two corrugated rollers are butted against each other, the corresponding two plane-shaped flute peaks a10a are in parallel contact with each other, forming a "face-to-face" parallel fit, so that the flute peaks b20b of the formed corrugated paper are also plane. When two layers of corrugated paper are butt-bonded, the plane-shaped flute peaks b20b greatly increase the contact surface, making the two layers of corrugated paper bonded to each other very firmly.

[0036] In addition, based on the flat-jointed flute structure, when the two corrugated rollers roll against each other, the entire flat-shaped flute a10a is subjected to overall force, and the force is balanced and stable, ensuring that the flute b20b of the corrugated paper can be effectively aligned and will not deviate, and that the bonding pressure is sufficient, further ensuring a firm bond under the premise of effective alignment.

[0037] As a preference, Figure 1 As shown, the corrugated paper forming part 1 also includes: a first gluing mechanism 15 for gluing the first corrugated paper 10; the first corrugated roller 11 is arranged between the fourth corrugated roller 14 and the second corrugated roller 12, Figure 6 As shown, the first corrugated roller 11 and the fourth corrugated roller 14 cooperate to form a bonding channel 100, and the first corrugated paper 10 coated with glue is bonded with the second corrugated paper 20 in the bonding channel 100 to form a double-layer corrugated paper 101. Figure 7 As shown, during bonding, the flute peaks b20b of the first corrugated paper 10 and the second corrugated paper 20 are bonded face to face and in parallel under the top action of the flute peaks a10a of the first corrugated roller 11 and the fourth corrugated roller 14.

[0038] As a preference, Figure 5 As shown, the peak a10a is formed by grinding.

[0039] In the prior art, the corrugated roller has a flute with an arc surface. The flute a10a in this embodiment is formed by grinding the flute with an arc surface.

[0040] As a preferred embodiment, Figure 4 As shown, the width dimension W of the peak a10a is 0.3-0.8 mm.

[0041] As a more preferred embodiment, W=0.49 mm.

[0042] As a preferred embodiment, Figure 3 As shown, the distance L between two adjacent corrugated teeth 120 is 3.5-7.5 mm.

[0043] As a more preferred embodiment, L=4.5 mm.

[0044] Embodiment 2

[0045] This embodiment provides a corrugated paperboard production line, comprising: a corrugated paper production mechanism as described in any of the above embodiments, such as Figure 1As shown, it also includes: a second gluing mechanism 16 arranged behind the bonding channel 100, the second gluing mechanism 16 is used to glue the surface of the double-layer corrugated paper 101; a bottom paper unwinding part 2 for unwinding and guiding the bottom paper 102; and a bottom paper bonding part 3 for bonding the double-layer corrugated paper 101 and the bottom paper 102 after gluing.

[0046] Preferably, the base paper bonding part 3 includes: a guide member 31; a flexible extrusion component 32 which is arranged to match the shape of the guide member 31, and a transportation channel 105 is formed between the guide member 31 and the flexible extrusion component 32; and a corrugated paper separator 33 which is arranged after the double-layer corrugated paper 101 and the base paper 102 just come into contact with each other and receive the double-layer corrugated paper 101 after bonding to enter the transportation channel 105; the base paper 102 supplied by the base paper unwinding part 2 is conveyed in the transportation channel 105 by adhering to the guide member 31, the double-layer corrugated paper 101 after glue coating is bonded to the base paper 102 to form a three-layer corrugated paper, and the double-layer corrugated paper 101 bonded to the base paper 102 is peeled off from the first corrugated roller 11 by the corrugated paper separator 33 and enters the transportation channel 105, so that the three-layer corrugated paper is pressed and adhered to the guide member 31 by the flexible extrusion component 32, and is synchronously transmitted and dried and shaped.

[0047] The specific structure of the base paper bonding part 3 in this embodiment has been disclosed in the invention patent application previously applied for by the applicant (application number CN202210019977.2, patent name is A method for producing corrugated paper without indentation), so it will not be repeated here.

[0048] Embodiment 3

[0049] The same or corresponding components in this embodiment as those in the above-mentioned second embodiment are marked with the same reference numerals as those in the above-mentioned second embodiment. For the sake of simplicity, only the differences from the above-mentioned second embodiment are described below. The differences between this embodiment and the above-mentioned second embodiment are:

[0050] As a preference, Figure 8 As shown, the first corrugated roller 11 is provided with a plurality of independent wind grooves 111 along its circumferential direction, and a plurality of through holes 112 connected with the wind grooves 111 are provided on its roller surface. A wind shield mechanism 4 is also provided on the side of the first corrugated roller 11; when working, the wind shield mechanism 4 is used to generate wind adsorption effect on the first corrugated paper 10 during the forming process, and generate wind blowing effect on the first corrugated paper 10 during the bonding process between the first corrugated paper 10 and the base paper 102.

[0051] Preferably, the wind hood mechanism 4 includes an exhaust hood 41 and a blowing hood 42. When the wind groove 111 of the first corrugated roller 11 rotates to the exhaust hood 41, the wind groove 111 is connected with the exhaust hood 41, and the through hole 112 generates an adsorption force. When it rotates to the blowing hood 42, the wind groove 111 is connected with the blowing hood 42, and the through hole 112 blows air outward.

[0052] In this embodiment, by providing an air groove 111 and a through hole 112 on the first corrugated roller 11, and arranging an exhaust hood 41 on the side thereof so that the through hole generates an adsorption force, the corrugated paper can be closely attached to the first corrugated roller 11 in the process from corrugated paper forming to corrugated paper bonding, thereby avoiding looseness resulting in unstable corrugated paper transmission, and further improving the point-to-point stability of the corrugated paper; in addition, by arranging an air blowing hood 42 on the side of the first corrugated roller 11, the double-layer corrugated paper 101 formed by bonding can be quickly detached from the first corrugated roller 11 by blowing outwards when it cannot quickly detach from the first corrugated roller 11.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-layer corrugated paper production mechanism, comprising: A corrugated paper forming part, the corrugated paper forming part comprising: a first corrugated roller and a second corrugated roller for forming a first corrugated paper, and a third corrugated roller and a fourth corrugated roller for forming a second corrugated paper; The first corrugated roller, the second corrugated roller, the third corrugated roller and the fourth corrugated roller each comprise: a roller body and corrugated teeth evenly distributed on the outer peripheral surface of the roller body; It is characterized in that The flute peaks a of the flutes are arranged to be planes, so that the flute peaks b of the first corrugated paper formed by the cooperation of the first and second corrugated rollers and the second corrugated paper formed by the cooperation of the third and fourth corrugated rollers are both planes.

2. A double-layer corrugated paper production mechanism according to claim 1, characterized in that: The corrugated paper forming part also includes: A first gluing mechanism for gluing the first corrugated paper; the first corrugated roller is arranged between the fourth corrugated roller and the second corrugated roller, the first corrugated roller and the fourth corrugated roller cooperate to form a bonding channel, the first corrugated paper after gluing is bonded with the second corrugated paper in the bonding channel to form a double-layer corrugated paper, and during bonding, the flute peaks b of the first corrugated paper and the second corrugated paper are bonded face to face and in parallel under the top action of the flute peaks a of the first corrugated roller and the fourth corrugated roller.

3. A double-layer corrugated paper production mechanism according to claim 2, characterized in that: The peak a is formed by grinding.

4. A double-layer corrugated paper production mechanism according to claim 2, characterized in that: The width dimension W of the peak a is 0.3-0.8 mm.

5. A double-layer corrugated paper production mechanism according to claim 4, characterized in that: W=0.49mm.

6. A double-layer corrugated paper production mechanism according to claim 2, characterized in that: The distance L between two adjacent corrugated teeth is 3.5-7.5 mm.

7. A double-layer corrugated paper production mechanism according to claim 6, characterized in that: L=4.5mm.

8. A corrugated board production line, characterized in that: include: The corrugated paper production mechanism according to any one of claims 2 to 7, further comprising: A second gluing mechanism disposed behind the bonding channel, the second gluing mechanism being used to apply glue to the surface of the double-layer corrugated paper; a liner unwinding section for unwinding and guiding the liner; and The backing paper bonding part is used to bond the double-layer corrugated paper and the backing paper after gluing.

9. A corrugated board production line according to claim 8, characterized in that: The base paper bonding part comprises: Guides; A flexible extrusion component is arranged to match the shape of the guide member, and a transportation channel is formed between the guide member and the flexible extrusion component; and A corrugated paper separator is arranged after the double-layer corrugated paper and the bottom paper just come into contact and bond, and receives the bonded double-layer corrugated paper into the transport channel; The base paper supplied by the base paper unwinding part is conveyed in the transport channel by fitting to the guide member, the double-layer corrugated paper after being coated with glue is bonded to the base paper to form a three-layer corrugated paper, and the double-layer corrugated paper bonded to the base paper is peeled off from the first corrugated roller by the corrugated paper separator and enters the transport channel, so that the three-layer corrugated paper is pressed and fitted to the guide member by the flexible extrusion component, synchronously transmitted, and dried and shaped.

10. A corrugated board production line according to claim 8, characterized in that: The first corrugated roller is provided with a plurality of independent wind grooves along its circumferential direction, and a plurality of through holes connected with the wind grooves are provided on its roller surface. A wind shield mechanism is also provided on the side of the first corrugated roller. When working, the wind shield mechanism is used to produce wind adsorption effect on the first corrugated paper during the forming process, and produce wind blowing effect on the first corrugated paper during the bonding process between the first corrugated paper and the base paper.

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