Long-service-life laminating device for corrugated board production

Abstract

The utility model relates to the technical field of corrugated board production, in particular to a long-life laminating device for corrugated board production, which comprises a lower corrugator roll, an upper corrugator roll and a flexible laminating mechanism which are sequentially arranged from bottom to top, the diameter of the lower corrugator roll is smaller than that of the upper corrugator roll, and a plurality of air suction holes are formed in the upper corrugator roll in an annular array; a plurality of annular air suction grooves communicated with the air suction holes are formed in the peripheral side of the upper corrugating roller in a linear mode, a plurality of steam heating holes are formed in the positions, outside the air suction holes, in the upper corrugating roller in an annular array mode, and the steam heating holes and the air suction holes are arranged in a staggered mode. And the distance between the multiple steam heating holes and the multiple air suction holes is 1mm. According to the pressing machine, flexible pressing can be conducted on corrugated boards, the diameter of the lower corrugated roller is smaller than that of the upper corrugated roller, abrasion can be reduced, the service life of the pressing machine is prolonged, and the pressing machine has high use value.

Description

Technical Field

[0001] This application relates to the field of corrugated board production technology, and in particular to a high-lifespan laminating device for corrugated board production. Background Technology

[0002] Corrugated cardboard is made by bonding face paper and corrugated paper together with glue. Depending on the required structural strength, the number of layers of corrugated paper can vary. A single layer of face paper and a single layer of corrugated paper are bonded together with glue to form a single layer of corrugated paper. Several single-layer corrugated paper are then bonded together with glue to form a whole. A single-facer heats and presses a single layer of flat corrugated paper into the desired flute shape, applies glue to the corrugated flanges, and then presses it together with the face paper (flat paper) to form a single layer of corrugated paper.

[0003] like Figure 1 The high wear-resistant and high-strength flexible laminating device for corrugated cardboard production shown is an invention patent previously applied for by our company. It is used for flexible lamination of corrugated cardboard. The lower corrugated roller and the upper corrugated roller have the same diameter. In actual use, the contact area between the upper and lower corrugated rollers when they rotate is large. In long-term use, the wear is faster and the lifespan is shorter, which does not meet the development requirements of enterprises.

[0004] To address the aforementioned issues, this application discloses a high-lifespan laminating device for corrugated cardboard production. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this application discloses a high-life-cycle laminating device for corrugated cardboard production.

[0006] To achieve the above objectives, the technical solution adopted in this application is: a high-life-cycle laminating device for corrugated cardboard production, comprising a lower corrugated roller, an upper corrugated roller, and a flexible laminating mechanism arranged sequentially from bottom to top. The diameter of the lower corrugated roller is smaller than that of the upper corrugated roller. The upper corrugated roller has a plurality of suction holes arranged in a circular array inside. The outer periphery of the upper corrugated roller has a plurality of annular suction grooves communicating with the suction holes in a straight line. The upper corrugated roller has a plurality of steam heating holes arranged in a circular array outside the plurality of suction holes inside. The plurality of steam heating holes and the plurality of suction holes are staggered and the distance between the plurality of steam heating holes and the plurality of suction holes is 1 mm.

[0007] More preferably, the flexible bonding mechanism is inclined or vertically disposed above the upper corrugated roller. The flexible bonding mechanism includes a support base, an arc-shaped base, two lead screw stepper motors, several arc-shaped scale-like pressure plates, and several elastic connecting mechanisms. The arc-shaped base is disposed below the support base. The two lead screw stepper motors are disposed opposite each other on both sides above the support base along its length direction, and the lead screw shafts of the two lead screw stepper motors are connected to the arc-shaped base. The several arc-shaped scale-like pressure plates are arranged in a straight line at the bottom of the arc-shaped base. The several elastic connecting mechanisms are arranged in a straight line between the arc-shaped base and the support base and are respectively connected to the several arc-shaped scale-like pressure plates.

[0008] A further preferred embodiment is that the bottom of the support base has a groove in its length direction, and several arc-shaped scale-like pressure plates are arranged in a straight line in the groove.

[0009] More preferably, the elastic connection mechanism includes an air bladder disposed between the arc-shaped seat and the support seat, and a spring connected below the air bladder and passing through the support seat to connect with the arc-shaped scale-like pressure plate.

[0010] More preferably, the airbag has an inflation port and a pressure relief valve on one side in the width direction, and a pressure relief gauge passing through the support base is provided above the airbag.

[0011] More preferably, the length of the middle arc-shaped scale-like pressing tablet is greater than the length of the corresponding arc-shaped scale-like pressing tablets on both sides.

[0012] More preferably, the arc-shaped scale-like pressing sheet has rounded corner structures on both sides in the width direction.

[0013] More preferably, the diameter of the lower corrugated roller is 325 mm, and the diameter of the upper corrugated roller is 460 mm.

[0014] More preferably, the wall thickness of the upper corrugated roller is 6 mm.

[0015] This application achieves the following beneficial effects:

[0016] This application not only enables flexible lamination of corrugated cardboard, but also reduces wear and extends the service life of the laminator by making the diameter of the lower corrugated roller smaller than that of the upper corrugated roller, thus possessing high practical value.

[0017] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures shown in the description and the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the disclosure of this application and, together with the specification, serve to explain the principles of this disclosure.

[0019] Figure 1 This is a schematic diagram of the overall structure disclosed in this application;

[0020] Figure 2 This is a three-dimensional structural diagram of the flexible bonding mechanism disclosed in this application;

[0021] Figure 3 This is a schematic diagram of the side structure of the flexible bonding mechanism disclosed in this application;

[0022] Figure 4 This is a top view of the flexible bonding mechanism disclosed in this application.

[0023] Figure 5 This is a schematic diagram of the upper corrugated roller structure disclosed in this application;

[0024] In the diagram: 10. Lower corrugated roller; 20. Upper corrugated roller; 21. Suction hole; 22. Steam heating hole; 23. Annular suction groove; 30. Flexible bonding mechanism; 31. Support seat; 32. Arc-shaped seat; 321. Groove body; 33. Lead screw stepper motor; 331. Lead screw shaft; 34. Arc-shaped scale-type pressing sheet; 341. Rounded corner structure; 35. Elastic connection mechanism; 351. Airbag; 3511. Inflation port; 3512. Pressure relief valve; 3513. Pressure relief gauge; 352. Spring. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0026] In the description of this application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the component or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Example

[0028] To address the issue of rapid wear and short service life of the upper corrugated paper roll in our previously applied high-wear-resistant, high-strength flexible laminating device for corrugated cardboard production during long-term use, we refer to... Figure 1 and Figure 2As shown, this application discloses a high-lifespan laminating device for corrugated cardboard production, comprising a lower corrugated roller 10, an upper corrugated roller 20, and a flexible laminating mechanism 30 arranged sequentially from bottom to top. In specific implementation, the bottom sheet passes between the upper corrugated roller 20 and the flexible laminating mechanism 30, and the corrugated paper passes between the upper corrugated roller 20 and the lower corrugated roller 10. Lamination is achieved under the pressure of the flexible laminating mechanism 30. The diameter of the lower corrugated roller 10 is smaller than the diameter of the upper corrugated roller 20. Preferably, the diameter of the lower corrugated roller 10 in this application is 32 mm. The upper corrugated roller 20 has a diameter of 460mm. The interior of the upper corrugated roller 20 has several suction holes 21 arranged in a ring array. The outer periphery of the upper corrugated roller 20 has several annular suction grooves 23 that communicate with the suction holes 21. The interior of the upper corrugated roller 20 has several steam heating holes 22 arranged in a ring array outside the suction holes 21. The steam heating holes 22 and the suction holes 21 are staggered and the distance between the steam heating holes 22 and the suction holes 21 is 1mm.

[0029] Based on the above structure, during the bonding process of corrugated paper and bottom paper, the steam in the steam heating hole 22 can heat the paste, and the negative pressure generated by the annular suction groove 23 can adsorb the corrugated paper under negative pressure, which can improve the bonding effect. In addition, setting the diameter of the lower corrugated roller 10 to be smaller than the diameter of the upper corrugated roller 20 can reduce wear and improve the service life of the press, which has high application value.

[0030] In one specific embodiment, the flexible bonding mechanism 30 is inclined or vertically positioned above the upper corrugated roller 20, and during the installation process, a gap is left between the flexible bonding mechanism 30 and the upper corrugated roller 20 to allow the corrugated paper and the bottom paper to pass through (this is common knowledge, just for your information). The flexible bonding mechanism 30 includes a support base 31, an arc-shaped base 32, two lead screw stepper motors 33, several arc-shaped scale-like pressing plates 34, and several elastic connecting mechanisms 35. The arc-shaped base 32 is located below the support base 31. The two lead screw stepper motors 33 are positioned opposite each other on both sides above the support base 31 along its length, and the lead screw shafts 331 of the two lead screw stepper motors 33 are connected to the arc-shaped base 32. Several arc-shaped scale-like pressing plates 34 are arranged in a straight line at the bottom of the arc-shaped base 32. Several elastic connecting mechanisms 35 are arranged in a straight line between the arc-shaped base 32 and the support base 31 and are respectively connected to several arc-shaped scale-like pressing plates 34.

[0031] In practice, firstly, according to the thickness requirements of the corrugated cardboard being produced, the two lead screw stepper motors 33 are controlled to move synchronously, causing the arc-shaped seat 32 to move up and down for adjustment.

[0032] When the flexible bonding mechanism 30 is implemented, the coated corrugated paper and bottom paper enter between the arc-shaped scale-type pressing sheet 34 and the upper corrugating roller 20. During this process, the bottom paper will pass through the entire arc surface of the arc-shaped scale-type pressing sheet 34. When the arc-shaped scale-type pressing sheet 34 and the elastic connecting mechanism 35 cooperate to press the corrugated paper and bottom paper, they can elastically rise and fall, thereby ensuring flexible pressing between the corrugated paper and bottom paper. This avoids the crushing of the corrugated paper and bottom paper caused by single-point hard pressing under high temperature and high pressure steam, thus maintaining the physical properties of the original paper. It also enables the single-sided corrugated board to form a large-angle, multi-point flexible wrapping with the upper corrugating roller 20. This not only greatly increases the heating time and pressing area, but also extends the transfer, penetration and curing time of the paste by several times, ensuring good bonding and uniform pressure. Furthermore, it further reduces the heat source temperature and reduces fiber deterioration and damage to the bottom paper and corrugated paper.

[0033] In one specific embodiment, the bottom of the support base 31 of this application has a groove 321 in its length direction, and a number of arc-shaped scale-like pressing plates 34 are arranged in a straight line in the groove 321. The purpose of this solution is to position the several arc-shaped scale-like pressing plates 34 to avoid their position shift during operation, thereby ensuring the pressing quality of the bottom paper and corrugated paper.

[0034] In one specific embodiment, the elastic connection mechanism 35 includes an air bladder 351 disposed between the arc-shaped seat 32 and the support seat 31, and a spring 352 connected below the air bladder 351 and passing through the support seat 31 to connect with the arc-shaped scale-like pressure plate 34. In addition, this application provides an inflation port 3511 and a pressure relief valve 3512 on one side of the width direction of the air bladder 351. A pressure relief gauge 3513 passing through the support seat 31 is provided above the air bladder 351. In specific implementation, the operator can inflate the middle air bladder 351 and / or the air bladders 351 on both sides of the middle air bladder 351 in sequence according to the width of the corrugated cardboard produced. When deflating the air bladder 351, the pressure relief valve 3512 on the corresponding air bladder 351 is opened to allow the gas to flow out. When the air pressure displayed by the corresponding pressure relief gauge 3513 is lower than the set value, it indicates that the deflation is complete. The airbag 351 of this application has an inflation port 3511 and a pressure relief valve 3512 on one side in the width direction, and a pressure relief gauge 3513 passing through the support base 31 is provided above the airbag 351.

[0035] This application utilizes the cooperation of airbag 351 and spring 352 to enable the arc-shaped scale-type pressure plate 34 to achieve elastic lifting, thereby ensuring uniform compression of the paste between the corrugated paper and the bottom paper.

[0036] It should be noted that regardless of the width of the corrugated cardboard produced, the central air bladder 351 of this application must be inflated. In addition, controlling the inflation of other air bladders 351 according to the width of the corrugated cardboard can reduce machine wear and ensure that the machine has a longer service life.

[0037] Same reference Figure 5 As shown, the length of the central arc-shaped scale-like pressure plate 34 is greater than the length of the corresponding arc-shaped scale-like pressure plates 34 on both sides. Correspondingly, the length of the central airbag 351 is greater than the length of the airbags 351 on both sides, and the number of springs 352 connected to the central airbag 351 is also greater than the number of springs 352 connected to the airbags 351 on both sides. The purpose of this is to reduce the number of airbags 351, avoid the operator from repeatedly inflating multiple airbags 351, and reduce the labor intensity of the operator.

[0038] The arc-shaped scale-type pressing sheet 34 of this application has rounded corner structures 341 on both sides in the width direction, which can ensure that the bottom paper and corrugated paper will not be scratched during the movement, thereby playing a protective role for the bottom paper and corrugated paper.

[0039] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. A high-lifespan laminating device for corrugated cardboard production, comprising a lower corrugated roller, an upper corrugated roller, and a flexible laminating mechanism arranged sequentially from bottom to top, characterized in that, The diameter of the lower corrugated roller is smaller than that of the upper corrugated roller. The upper corrugated roller has several suction holes arranged in a ring array inside. The outer circumference of the upper corrugated roller has several ring suction grooves that communicate with the suction holes in a straight line. The upper corrugated roller has several steam heating holes arranged in a ring array outside the suction holes inside. The steam heating holes and the suction holes are staggered and the distance between the steam heating holes and the suction holes is 1 mm.

2. The high-lifespan laminating device for corrugated cardboard production according to claim 1, characterized in that, The flexible bonding mechanism is inclined or vertically positioned above the upper corrugated roller. The flexible bonding mechanism includes a support base, an arc-shaped base, two lead screw stepper motors, several arc-shaped scale-like pressure plates, and several elastic connecting mechanisms. The arc-shaped base is positioned below the support base. The two lead screw stepper motors are positioned opposite each other on both sides above the support base along its length, and the lead screw shafts of the two lead screw stepper motors are connected to the arc-shaped base. Several arc-shaped scale-like pressure plates are arranged in a straight line at the bottom of the arc-shaped base. Several elastic connecting mechanisms are arranged in a straight line between the arc-shaped base and the support base and are respectively connected to several arc-shaped scale-like pressure plates.

3. The high-lifespan laminating device for corrugated cardboard production according to claim 2, characterized in that, The bottom of the support base has a groove along its length, and several arc-shaped scale-like pressure plates are arranged in a straight line in the groove.

4. The high-lifespan laminating device for corrugated cardboard production according to claim 2, characterized in that, The elastic connection mechanism includes an airbag located between the arc-shaped seat and the support seat, and a spring connected below the airbag and passing through the support seat to connect with the arc-shaped scale-like pressure plate.

5. A high-lifespan laminating device for corrugated cardboard production according to claim 4, characterized in that, The airbag has an inflation port and a pressure relief valve on one side in the width direction, and a pressure relief gauge passing through the support base is provided above the airbag.

6. A high-lifespan laminating device for corrugated cardboard production according to claim 2, characterized in that, The length of the central arc-shaped scale-like tablet is greater than the length of the corresponding arc-shaped scale-like tablets on both sides.

7. A high-lifespan laminating device for corrugated cardboard production according to claim 2, characterized in that, The arc-shaped scale-type pressing sheet has rounded corner structures on both sides in the width direction.

8. A high-lifespan laminating device for corrugated cardboard production according to claim 1, characterized in that, The lower corrugated roller has a diameter of 325 mm, and the upper corrugated roller has a diameter of 460 mm.

9. A high-lifespan laminating device for corrugated cardboard production according to claim 1, characterized in that, The wall thickness of the upper corrugated roller is 6mm.

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