Roll paper tube machine

Abstract

The utility model discloses a roll paper tube machine which comprises a paper tube forming mechanism and an unwinding mechanism used for unwinding first roll paper and second roll paper respectively, and the first roll paper and the second roll paper are wound on a winding shaft of the paper tube forming mechanism and formed into a paper tube. A cutting device used for cutting the formed paper tubes is arranged on the discharging side of the paper tube forming mechanism. A gluing mechanism used for completing glue coating on the first roll paper and a width limiting device used for limiting the glue coating width are sequentially arranged along the unwinding path of the first roll paper. According to the structure, the coating width of glue is limited through the width limiting device, the use amount of the glue is reduced, the cost is reduced, and convenience is brought to subsequent winding and tearing of the composite paper tube; particularly, a plurality of notches are formed in the scraper at intervals, a plurality of adhesive coating tapes are defined through the notches, uniform and stable pasting is ensured, the structure is high in practicability, and market requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of paper tube manufacturing equipment technology, and in particular to a roll paper tube machine. Background Technology

[0002] In industries such as packaging and papermaking, paper tubes are widely used for winding materials such as film, paper, and cables. However, traditional paper tube machines have many limitations in the production process: the paper tubes they produce are usually small rolls and can only process a single type of paper roll, unable to achieve composite processing of paper rolls of different widths. This results in insufficient strength and applicability of the paper tubes, making it difficult to meet the diverse needs of the market. While some existing paper tube machines can wind different paper rolls, during the winding process, glue is applied to one group of rolls using a glue-coating roller, typically using a full-surface glue application method. This not only wastes glue and increases costs but also leads to long drying times and paper roll deformation. More importantly, in subsequent use, separating the material wound on the composite paper tube is very cumbersome. Directly pulling out the composite paper tube easily causes the material to become loose and disordered; tearing it from the inner layer requires overcoming the adhesive force of the entire glued surface, increasing the difficulty of tearing.

[0003] Therefore, there is an urgent need to develop a roll paper tube machine to solve the above problems. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a roll paper tube machine to meet diverse market demands, thereby reducing paper tube production costs while improving production efficiency and quality.

[0005] The technical solution of this utility model is as follows: it includes a paper tube forming mechanism and an unwinding mechanism for releasing a first roll of paper and a second roll of paper, wherein the first roll of paper and the second roll of paper are wound on the roller of the paper tube forming mechanism and formed into a paper tube; a cutting device for cutting the formed paper tube is provided on the discharge side of the paper tube forming mechanism.

[0006] Along the unwinding path of the first roll of paper, there are also sequentially provided a glue coating mechanism for applying glue to the first roll of paper and a width limiting device for limiting the width of the glue coating.

[0007] A further technical solution is as follows: the width limiting device includes a scraper, which contacts the glue-coated surface of the first roll of paper. The scraper has a notch, which defines the glue-coated width of the first roll of paper when the scraper scrapes the glue.

[0008] A further technical solution is that the scraper has multiple sets of notches spaced apart.

[0009] A further technical solution is as follows: the doctor blade is provided with a glue-coating pressure roller and a doctor blade pressure roller on both sides of the unwinding path. The first roll of paper passes under the glue-coating pressure roller and then passes over the doctor blade and under the doctor blade pressure roller in sequence, so that the glue-coating pressure roller and the doctor blade pressure roller apply pressure to the first roll of paper located at the doctor blade.

[0010] A further technical solution is that the paper tube forming mechanism also includes a paper winding belt and pulleys that are misaligned and installed on both sides of the roll. The paper winding belt is wound on the roll and is cross-driven and connected to the pulleys on both sides.

[0011] A further technical solution is as follows: the second roll of paper is bonded to and covers the adhesive surface of the first roll of paper. Driven by the paper roll belt, the first roll of paper and the second roll of paper are wound on the roll and rotate in a straight line along the discharge direction.

[0012] A further technical solution is as follows: the glue coating mechanism includes a rotatable glue coating roller, and a glue tank for holding glue is provided below the glue coating roller. The lower part of the glue coating roller is immersed in the glue tank, and the first roll of paper passes over the top of the glue coating roller.

[0013] A further technical solution is that the first roll of paper and the second roll of paper have different widths.

[0014] A further technical solution is that the outer circumferential surface of the roll is smooth, and the first roll of paper and the second roll of paper are spirally wound on the roll at a certain angle.

[0015] A further technical solution is as follows: along the unwinding path of the first roll of paper and the second roll of paper, tension rollers for adjusting the paper tension of the first roll of paper and the second roll of paper are respectively provided in front of the paper tube forming mechanism.

[0016] The beneficial technical effects of this utility model are as follows: 1) This structure limits the adhesive coating width through a width-limiting device, reducing adhesive usage and costs, and facilitating subsequent winding and tearing of the composite paper tube; furthermore, several notches are spaced on the scraper to define several adhesive tapes, ensuring uniform and stable bonding. 2) By using first and second rolls of paper with different widths, the wound composite paper tube can meet the strength and hardness requirements while reducing costs; at the same time, it realizes the composite processing of different rolls of paper, producing paper tubes with different properties, thus broadening the application fields of paper tubes. 3) The unique paper tube forming mechanism design, especially the roller-free design, reduces complex drive transmission devices, reduces maintenance requirements, and further ensures the stability and efficiency of paper winding. 4) By cutting the wound composite paper tube, the edges of the resulting paper tube are made neater. Attached Figure Description

[0017] Figure 1This is a complete structural schematic diagram of this utility model;

[0018] Figure 2 This is a schematic diagram of the specific structure of the scraper of this utility model;

[0019] The components are: 1. Roller; 2. Glue roller; 3. Glue trough; 4. Paper roll belt; 5. Pulley; 6. Cutter; 7. Sensing device; 8. Guide roller; 9. Glue pressure roller; 10. Tension roller; 11. First roll; 12. Second roll; 13. First roll of paper; 14. Second roll of paper; 15. Doctor blade; 151. Notch; 16. Doctor blade pressure roller. Detailed Implementation

[0020] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] like Figure 1 As shown, the present invention provides a roll paper tube machine, comprising an unwinding mechanism, a gluing mechanism, a paper tube forming mechanism, a cutting device, and a conveying mechanism. The gluing mechanism is located between the unwinding mechanism and the paper tube forming mechanism. The roll of paper unwound by the unwinding mechanism is coated with glue by the gluing mechanism and then wound onto the roll 1 of the paper tube forming mechanism to form a paper tube. The cutting mechanism is used to cut the formed paper tube to obtain a paper tube of a predetermined length.

[0022] Specifically, the glue coating mechanism includes a glue coating roller 2 and a glue coating motor that drives the glue coating roller 2 to rotate. A glue tank 3 for holding glue is provided below the glue coating roller 2. The lower part of the glue coating roller 2 is immersed in the glue tank 3. Driven by the glue coating motor, the glue coating roller 2 rotates so that glue adheres to its outer surface, so as to coat the roll of paper that passes over the upper part of the glue coating roller 2.

[0023] The paper tube forming mechanism also includes a paper roll belt 4 and pulleys 5 respectively disposed on both sides of the roll 1. The pulleys 5 on both sides are installed in a staggered manner along the axial direction of the roll 1. The paper roll belt 4 is cross-connected with the pulleys 5 on both sides and is wound on the roll 1. Under the drive of the belt drive motor, the pulleys 5 rotate to drive the paper roll belt 4 wound on the roll 1 to rotate, and at the same time drive each layer of paper to be continuously and tightly wound on the roll 1.

[0024] In this embodiment, the roller 1 is used to support the winding of the paper roll. The outer circumferential surface of the roller 1 is smooth. The paper roll is spirally wound on the roller 1 at a certain angle, and under the continuous unidirectional pulling of the paper roll belt 4, it achieves winding and rotary linear motion along the axial direction of the roller 1 towards the discharge direction. The roller 1 does not need to rotate, reducing the complexity of the drive transmission device and lowering maintenance requirements. It is conceivable that the roller 1 also needs to have sufficient strength and rigidity to support the weight of the paper roll and the tension of the paper roll belt 4.

[0025] The cutting device includes a cutter 6 that can extend and retract radially along the roll 1, and the cutter 6 is located in the discharge direction of the paper tube. A sensing device 7 for determining the length of the paper tube is also provided at the rear of the cutting device along the discharge direction. When the paper tube wound on the roll 1 moves along the discharge side of the roll 1, and the sensing device 7 senses that the paper tube has reached a predetermined length, the cutter 6 extends and cuts the paper tube. In this embodiment, the sensing device 7 is a photoelectric sensor.

[0026] Furthermore, a number of staggered guide rollers 8 are provided between the unwinding mechanism and the gluing mechanism. These guide rollers 8 can apply a certain pressure to the paper roll to eliminate wrinkles or warping that may occur during the unwinding process, ensuring that the paper roll enters the gluing mechanism smoothly.

[0027] Furthermore, along the unwinding path of the paper roll, a glue-applying pressure roller 9 is located behind the glue-applying mechanism. The paper roll passes over the glue-applying roller 2 from above and then passes under the glue-applying pressure roller 9. The glue-applying pressure roller 9 is used to adjust the travel path of the paper roll, and at the same time, it can apply pressure to the paper roll, thereby increasing the coverage area of ​​the paper roll on the glue-applying roller 2 and ensuring that the glue is evenly applied to the surface of the paper roll.

[0028] Furthermore, along the unwinding path of the paper roll, a tension roller 10 is provided in front of the paper tube forming mechanism. The tension roller 10 ensures that the paper maintains appropriate tension during transmission by applying a certain pressure to the paper roll or adjusting its position. Appropriate tension can not only prevent the paper roll from breaking due to excessive tightness, but also make the paper tightly adhered during the winding process, forming a compact and uniform paper tube, avoiding gaps or delamination, and improving the quality of the paper tube.

[0029] In this embodiment, the unwinding mechanism includes a narrower first roll 11 and a wider second roll 12. The first roll of paper 13 unwound from the first roll 11 passes sequentially along its unwinding path through the guide roller 8, the gluing mechanism, the gluing pressure roller 9, and the tension roller 10, and finally enters the reel 1. The second roll of paper 14 unwound from the second roll 12 passes sequentially along its unwinding path through the guide roller 8 and the tension roller 10 before entering the reel 1. Before entering the reel 1, the second roll of paper 14 is adhered to and covers the gluing surface of the first roll of paper 13, and the first roll of paper 13 and the second roll of paper 14 are wound and formed on the reel 1, forming a composite paper tube with the second roll of paper 14 on the inner circle and the first roll of paper 13 on the outer circle. Under the continuous unidirectional pulling of the paper belt 4, the composite paper tube continuously rotates in a linear motion in the conveying direction. By designing the first roll 11 and the second roll 12 with different widths, the composite paper tube can reduce costs while meeting the requirements for strength and hardness.

[0030] In this embodiment, as Figure 2 As shown, a width-limiting device for restricting the adhesive coating width is also provided behind the adhesive coating roller 9 along the unwinding path of the first roll of paper 13. The width-limiting device includes a scraping component that contacts the adhesive coating surface. In this embodiment, the scraping component is a scraper 15, and the position of the scraper 15 is adjusted by an adjusting frame. Specifically, the scraper 15 contacts the adhesive coating surface of the first roll of paper 13. The scraper 15 has several notches 151 spaced apart. When the scraper 15 scrapes the adhesive, the width of the several notches 151 defines the adhesive coating width of several adhesive strips on the first roll of paper 13. This ensures that during the winding and forming process of the first roll of paper 13 and the second roll of paper 14, the several adhesive strips spaced apart can provide uniform adhesion, ensuring the overall quality and stability of the composite roll while greatly reducing the adhesive coating area.

[0031] Compared to applying adhesive to the entire surface, using several intermittent adhesive strips saves on adhesive material, reduces costs, and avoids problems such as long drying times and paper roll deformation caused by excessive adhesive. More importantly, composite paper tubes often require separation of the wound material for subsequent use. Directly pulling out the composite paper tube can easily cause the material to become loose and messy, while tearing it apart from the inner layer is much more convenient. Because of the intermittent adhesive strips, the adhesion between the inner and outer layers of the roll is concentrated at the adhesive strips, while the remaining uncoated areas are relatively separated. When tearing, you only need to overcome the adhesive force of the adhesive strips, not the adhesive force of the entire contact surface, reducing the difficulty of tearing and making the operation smoother.

[0032] Furthermore, a doctor blade pressure roller 16 is provided behind the doctor blade 15 along the unwinding path of the first roll of paper 13. After the first roll of paper 13 passes under the glue coating roller 9, it passes successively above the doctor blade 15 and below the doctor blade pressure roller 16. The glue coating roller 9 and the doctor blade pressure roller 16 apply pressure to the first roll of paper 13 at the doctor blade 15 to ensure that the doctor blade 15 and the glue-coated surface of the first roll of paper 13 are tightly adhered.

[0033] This structure can be cut to meet different length requirements of the paper tube, making it more flexible and particularly suitable for the production of paper tubes for large rolls of paper. Moreover, unlike the existing technology that cuts the paper, this structure cuts the paper tube to make the edges of the resulting paper tube neater.

[0034] The conveying mechanism includes a chain conveyor located below the roll 1. After the cut paper tubes fall onto the chain conveyor, they are sent to the next section.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A paper tube machine, comprising a paper tube forming mechanism, a paper unwinding mechanism for unwinding a first paper roll (13) and a second paper roll (14) respectively, the first paper roll (13) and the second paper roll (14) being wound on a winding shaft (1) of the paper tube forming mechanism and formed into a paper tube, and a cutting device for cutting the formed paper tube on a discharge side of the paper tube forming mechanism. characterized in that A glue coating mechanism for coating the first paper roll (13) with glue and a width limiting device for limiting the glue coating width are arranged in sequence along an unwinding path of the first paper roll (13).

2. A web reel-up as claimed in claim 1, characterized in that: The width limiting device comprises a doctor blade (15) in contact with a glue coating surface of the first paper roll (13), and the doctor blade (15) is provided with a plurality of notches (151) for defining the glue coating width of the first paper roll (13) when the doctor blade (15) wipes the glue.

3. A web reel-up as claimed in claim 2, characterised in that: The doctor blade (15) is provided with the plurality of notches (151) at intervals.

4. A web reel-up as claimed in claim 2, characterised in that: The doctor blade (15) is provided with a glue coating pressure roller (9) and a doctor blade pressure roller (16) on both sides of the unwinding path respectively, and the first paper roll (13) passes above the doctor blade (15) and below the doctor blade pressure roller (16) in sequence after passing below the glue coating pressure roller (9), so that the glue coating pressure roller (9) and the doctor blade pressure roller (16) apply pressure to the first paper roll (13) at the doctor blade (15).

5. A web reel-up as claimed in claim 1, characterized in that: The paper tube forming mechanism further comprises a paper winding belt (4) and pulleys (5) installed on both sides of the winding shaft (1) in a staggered manner, and the paper winding belt (4) is wound on the winding shaft (1) and connected to the pulleys (5) on both sides in cross transmission.

6. A web reel-up as claimed in claim 5, characterised in that: The second paper roll (14) covers the glue coating surface of the first paper roll (13), and the first paper roll (13) and the second paper roll (14) are wound on the winding shaft (1) and move in a straight line in a rotary manner in a discharge direction under the driving of the paper winding belt (4).

7. A web reel-up as claimed in claim 1, characterized in that: The glue coating mechanism comprises a rotatable glue coating roller (2), a glue tank (3) for containing glue is arranged below the glue coating roller (2), the lower part of the glue coating roller (2) is immersed in the glue tank (3), and the first paper roll (13) passes above the glue coating roller (2).

8. A web reel-up as claimed in claim 1, characterized in that: The first paper roll (13) and the second paper roll (14) have different widths.

9. A web reel-up as claimed in claim 1, characterized in that: The winding shaft (1) has a smooth outer periphery, and the first paper roll (13) and the second paper roll (14) are spirally wound on the winding shaft (1) at a certain angle.

10. A web reel-up as claimed in claim 1, characterized in that: Tension rollers (10) for adjusting the tension of the first paper roll (13) and the second paper roll (14) are arranged in front of the paper tube forming mechanism along the unwinding path of the first paper roll (13) and the second paper roll (14).

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