A paper roll unwinding and dust reduction device

Abstract

The application discloses a paper roll unwinding and dust reducing device, and belongs to the field of material unwinding and dust removing. The device comprises a rack, the end of the rack is provided with a supporting roller, a raw paper roll is sleeved on the supporting roller and rotates, and an unwinding mechanism is arranged on the rack to drive the raw paper roll to rotate and unwind. A conveying assembly for assisting the raw paper unwinding and a dust removing device for reducing dust are arranged on the rack. An embossing device and an printing and dyeing device for embossing and printing and dyeing are arranged on the rack respectively. The application has the effect of reducing the dust generated during the raw paper unwinding, thereby improving the paper quality and the qualified rate.

Description

Technical Field

[0001] This application relates to the field of material unwinding and dust removal technology, and in particular to a paper roll unwinding and dust reduction device. Background Technology

[0002] Household paper refers to various types of sanitary wiping paper used for personal care at home and when out and about, including toilet paper rolls, facial tissues, boxed facial tissues, pocket facial tissues, paper handkerchiefs, napkins, hand towels, wet wipes, and kitchen paper towels.

[0003] In the fields of paper roll production, processing and application, the quality and cleanliness of paper rolls are of paramount importance. With the continuous development of related industries, the requirements for paper roll quality are also increasing.

[0004] During the processing of raw paper, a large roll needs to be unwound. Embossing, ink printing, and slitting / folding are then performed on the roll surface. This unwinding process generates a significant amount of paper dust, which can lead to excessive dust buildup in napkin production. This dust adheres to the paper surface, altering its roughness and coefficient of friction, making the paper layers more prone to separation and delamination. The dust also forms an irregular granular layer between the embossing die and the paper, changing the actual contact area and state between them. This results in uneven embossing pressure distribution, leading to inconsistent pattern clarity and depth, affecting the embossing effect. Furthermore, it interferes with normal ink transfer, potentially causing ink to accumulate around the dust particles, resulting in uneven ink distribution during printing, ink smearing, and other printing problems. Ultimately, this affects paper quality and yield. Utility Model Content

[0005] In order to reduce the dust generated during the unwinding of raw paper, thereby improving paper quality and yield, this application provides a dust reduction device for unwinding paper rolls.

[0006] The dust collection device for unwinding paper rolls provided in this application adopts the following technical solution: A paper roll unwinding and dust reduction device includes a frame, a support roller at one end of the frame, a paper roll rotating on the support roller, an unwinding mechanism on the frame for driving the paper roll to rotate and unwind, a conveying assembly for assisting paper unwinding and a dust removal device for reducing dust on the frame, and an embossing device and a dyeing device for embossing and dyeing respectively on the frame.

[0007] By adopting the above technical solution, the raw paper roll is placed on the support roller. Under the action of the unwinding mechanism, the raw paper rotates on the support roller. The open end of the raw paper is transported to the embossing device and the printing and dyeing device through the conveying component. The dust removal device treats the dust on the paper surface. After the dust removal treatment, the paper is first embossed by the embossing device and then printed and dyed by the printing and dyeing device. This avoids the influence of dust on embossing and printing and dyeing, improves the pass rate of paper embossing and printing and dyeing, and improves the paper quality.

[0008] Preferably, the unwinding mechanism includes a support frame rotatably connected to the frame, a conveyor belt is provided on the support frame, the conveyor belt rotates around the support frame, and the conveyor belt abuts against the surface of the raw paper roll. The unwinding mechanism also includes a rotating component for driving the support frame to rotate.

[0009] By adopting the above technical solution, the support frame and the transmission belt thereon can abut against and drive the paper to rotate, thereby unwinding the paper. As the diameter of the unwound paper gradually decreases, the support frame slowly rotates under the action of the rotating component, so that the conveyor belt always abuts against the surface of the paper and drives the paper to rotate continuously for unwinding operation.

[0010] Preferably, the rotating assembly includes a rotating shaft and torsion springs sleeved at both ends of the rotating shaft. The two ends of the rotating shaft are respectively rotatable on the side wall of the frame. The rotating shaft passes through and rotates on the support frame. The two ends of the support frame are respectively fixedly connected to sleeves. The sleeves are sleeved and rotate on the rotating shaft. The torsion springs are disposed inside the sleeves, and their two torsion arms are respectively fixedly connected to the side wall of the frame and the inner wall of the sleeve. An arc block is fixedly connected to the side wall of the sleeve away from the support frame. A limiting groove for the arc block to rotate is provided on the side wall of the frame.

[0011] By adopting the above technical solution, as the diameter of the paper roll gradually decreases, the support frame gradually drives the rotating shaft to rotate slowly under the action of the torsion spring, thereby preventing the conveyor belt from detaching from the paper roll. The arc block rotates in the limiting groove, which can limit the rotation range of the support frame.

[0012] Preferably, the conveying assembly includes a first conveying roller, a second conveying roller, and a third conveying roller. The first conveying roller, the second conveying roller, and the third conveying roller are rotatably mounted on the frame and all abut against and rotate on the base paper. The first conveying roller is located between the unwinding mechanism and the embossing device, the second conveying roller is located between the embossing device and the printing and dyeing device, and the third conveying roller is located after the printing and dyeing device.

[0013] By adopting the above technical solution, the first conveyor roller, the second conveyor roller, and the third conveyor roller can smoothly transport the raw paper to various devices for processing. This not only ensures that the paper is flat and folded without damage during transport, but also changes the transport direction of the paper.

[0014] Preferably, the dust removal device includes a high-pressure atomizing nozzle and an atomizing device. The high-pressure atomizing nozzle is fixedly installed at the front end of the first conveyor roller. The raw paper is conveyed through the spray field of the high-pressure atomizing nozzle, and the atomized water molecules impact the surface of the unwound paper.

[0015] By employing the above technical solution, the area formed by the high-pressure atomizing nozzle generates a large number of tiny water mist particles. These water mist particles have a large specific surface area, allowing them to fully contact paper dust in the air. As the water mist particles continuously combine with the dust, the dust particles gradually grow larger and heavier. When the weight exceeds the buoyancy of the air, the dust will agglomerate and settle, thus effectively reducing the dust content in the air and lowering the amount of dust adhering to the paper surface. At the same time, an appropriate amount of water mist can maintain a certain level of humidity on the paper surface without making the paper excessively wet. Appropriate humidity can increase the paper's flexibility and plasticity, making it easier to shape during embossing and printing, and reducing delamination and smudging problems caused by dry, brittle paper.

[0016] Preferably, the atomizing device includes a water tank and an air compressor, both of which are placed beside the frame. The high-pressure atomizing nozzle is connected to a water pipe and two air pipes. The end of the water pipe away from the high-pressure atomizing nozzle is connected to the water tank, and the ends of the two air pipes away from the high-pressure atomizing nozzle are both connected to the air compressor.

[0017] By adopting the above technical solution, the two air pipes can be connected to a compressed air unit to eject high-pressure air at high speed. When the high-speed airflow encounters the water flow ejected from the water pipe, the airflow generates strong shearing and impact forces on the water flow, causing the water flow to rapidly break into tiny droplets, thus achieving a highly efficient atomization effect. This atomization method is more delicate and uniform than atomization relying solely on water pressure, producing smaller droplet sizes and improving the quality of atomization.

[0018] Preferably, the water storage tank is equipped with a needle-type water regulating valve, which is connected to the water pipe, and an air valve is provided between the air pipe and the high-pressure atomizing nozzle.

[0019] By adopting the above technical solution, the water intake can be precisely controlled by the needle-type water valve, and the air pressure can be adjusted by the air valve. By controlling the air pressure and the water intake, it can be ensured that the amount of water mist sprayed is moderate, only slightly wetting the surface of the paper, without penetrating into the paper and causing excessive moisture.

[0020] Preferably, the dust removal device further includes two sets of atomizing components, which are respectively disposed between the embossing device and the dyeing device and after the dyeing device; the atomizing components include pipes and multiple ultrasonic atomizing nozzles, the pipes are evenly provided with multiple atomizing holes, the multiple ultrasonic atomizing nozzles are respectively installed in the multiple atomizing holes, the pipes are disposed above the base paper, and the multiple ultrasonic atomizing nozzles are arranged along the width direction of the base paper.

[0021] By adopting the above technical solutions, springback may occur after embossing, causing the pattern to become lighter or disappear. The water sprayed by atomization after embossing can increase the humidity of the paper, reduce the elasticity of the fibers, reduce the possibility of springback, and ensure that the embossing effect meets the design requirements. The atomization operation after printing and dyeing can replenish the paper with an appropriate amount of water after printing and dyeing, so that the dye can better react with the fibers in a humid environment, promote the fixation of the dye, improve the fastness and brightness of the color, and reduce the phenomenon of color fading.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The base paper roll is placed on the support roller. Under the action of the unwinding mechanism, the base paper rotates on the support roller. The open end of the base paper is transported to the embossing device and the printing and dyeing device through the conveying component. The dust removal device treats the dust on the paper surface. After the dust removal treatment, the paper is first embossed by the embossing device and then printed and dyed by the printing and dyeing device. This avoids the influence of dust on the embossing and printing and dyeing, improves the pass rate of paper embossing and printing and dyeing, and improves the paper quality. 2. The support frame and the transmission belt thereon can abut against and drive the paper to rotate, thereby unwinding the paper. As the diameter of the unwound paper gradually decreases, the support frame slowly rotates under the action of the rotating component, so that the conveyor belt always abuts against the surface of the paper and drives the paper to rotate continuously for unwinding operation. 3. The area created by the high-pressure atomizing nozzle generates a large number of tiny water mist particles. These water mist particles have a large specific surface area, allowing them to fully contact paper dust in the air. As the water mist particles continuously combine with the dust, the dust particles gradually grow larger and heavier. When the weight exceeds the buoyancy of the air, the dust will agglomerate and settle, effectively reducing the dust content in the air and lowering the amount of dust adhering to the paper surface. At the same time, an appropriate amount of water mist can maintain a certain level of humidity on the paper surface without making the paper excessively wet. Appropriate humidity can increase the paper's flexibility and plasticity, making it easier to shape during embossing and printing, and reducing delamination and smearing problems caused by dry and brittle paper. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of a paper roll unwinding and dust reduction device.

[0024] Figure 2 This is a schematic diagram of the structure of the prominent rotating component in the embodiments of this application.

[0025] Explanation of reference numerals in the attached figures: 1. Frame; 2. Placement table; 3. Connecting frame; 4. Support roller; 5. Raw paper roll; 6. Unwinding mechanism; 7. Conveying assembly; 8. Dust removal device; 9. Embossing device; 10. Printing and dyeing device; 11. Support frame; 12. Conveyor belt; 13. Rotating assembly; 14. Rotating shaft; 15. Torsion spring; 16. Sleeve; 17. Arc block; 18. Restricting groove; 19. First conveyor roller; 20. Second conveyor roller; 21. Third conveyor roller; 22. High-pressure atomizing nozzle; 23. Water tank; 24. Air compressor; 25. Water pipe; 26. Air pipe; 27. Needle-type water regulating valve; 28. Air valve; 29. ​​Atomizing assembly; 30. Pipeline; 31. Ultrasonic atomizing nozzle; 32. Slot; 33. Drive motor; 34. Drive roller; 35. Support column; 36. Correction device. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] This application discloses a paper roll unwinding and dust reduction device, such as... Figure 1 As shown, the machine includes a frame 1, which includes a placement platform 2 and a connecting frame 3. The connecting frame 3 is equipped with an unwinding mechanism 6 that drives the paper roll 5 to rotate and unwind. The placement platform 2 is equipped with a dust removal device 8 to reduce dust. The placement platform 2 is also equipped with an embossing device 9 and a printing and dyeing device 10, respectively, for embossing and dyeing. At the front end of the embossing device 9, the placement platform 2 is equipped with a correction device for correcting the deviation of the paper roll, so that the conical positions entering the embossing device 9 and the printing and dyeing device 10 are aligned to avoid deviation to the left. The printing and dyeing device 10 is located at the rear end of the embossing device 9, where the paper roll is embossed before printing and dyeing.

[0028] like Figure 1As shown, the conveying assembly 7 includes a first conveyor roller 19, a second conveyor roller 20, and a third conveyor roller 21. These rollers are rotatably mounted on the placement table 2 and are elevated above the surface of the table 2 by a support plate. The first conveyor roller 19 is positioned between the unwinding mechanism 6 and the embossing device 9. The second conveyor roller 20 is positioned between the embossing device 9 and the printing and dyeing device 10. The third conveyor roller 21 is positioned after the printing and dyeing device 10. After being released from the paper roll 5, the paper first passes around the first conveyor roller 19 and then sequentially enters the correction device and the embossing device 9. After exiting the embossing device 9, the paper passes around the second conveyor roller 20 and is then fed into the printing and dyeing device 10. After printing and dyeing, the paper is conveyed to the next stage of operation via the third conveyor roller 21. The first conveyor roller 19, the second conveyor roller 20, and the third conveyor roller 21 maintain stable paper conveying and can change the paper's direction of travel, resulting in a smooth processing flow.

[0029] like Figure 1 As shown, a support roller 4 is provided on the connecting frame 3, and a paper roll 5 is provided on the support roller 4. The paper roll 5 is fitted and rotated on the support roller 4. The support roller 4 is detachably connected to the connecting frame 3. A slot 32 is provided on the top of the connecting frame 3, and the support roller 4 is engaged in the slot 32, thereby restricting the support roller 4 from rotating freely and falling off the connecting frame 3. The unwinding mechanism 6 includes a support frame 11, on which a conveyor belt 12 is wound. The support frame 11 is inclined, with its top end abutting against the lower surface of the paper roll 5 and its bottom end rotatably connected to the bottom of the placement platform 2. A drive roller 34 for driving the conveyor belt 12 is rotatably arranged inside the bottom of the support frame 11. A drive motor 33 for driving the drive roller 34 is installed on the outer wall of the placement platform 2. The conveyor belt is wound around the drive roller 34.

[0030] like Figure 1 and Figure 2 As shown, the unwinding mechanism 6 also includes a rotating assembly 13 that drives the support frame 11 to rotate. The rotating assembly 13 includes a rotating shaft 14 and torsion springs 15 sleeved at both ends of the rotating shaft 14. Two columns are fixedly welded to the inner cavity port of the placement platform 2 near the connecting frame 3. The two columns are cuboid in shape and arranged in parallel. The end of the support frame 11 away from the original paper roll 5 rotates between the two columns. The drive roller 34 passes through and rotates on the opposite sidewalls of the two columns. The rotating shaft 14 passes through and is fixedly connected to the drive roller 34. The rotating shaft 14 rotates through the opposite sidewalls of the two columns. The rotating shaft 14 of the drive motor 33 passes through the sidewall of the placement platform 2 and is fixedly connected to the rotating shaft 14 on the columns. Sleeves 16 are fixedly welded to both ends of the support frame 11. The end of the sleeve 16 away from the support frame 11 passes through and is rotatably connected to the sidewall of the column. A torsion spring 15 is disposed within the sleeve, and its two ends are fixedly welded to the inner wall of the sleeve 16 and the side wall of the column, respectively. An arc block 17 is fixedly welded to the outer wall of the end of the sleeve 16 away from the support frame 11, and a limiting groove for the arc block 17 to rotate is provided on the side wall of the column.

[0031] like Figure 1 and Figure 2 As shown, the drive belt on the support frame 11 moves slowly and drives the paper roll 5 to rotate, thus unwinding the paper roll 5. As the paper roll 5 is unwound, its diameter gradually decreases. Under the action of the torsion spring 15, the support frame 11 rotates slowly, ensuring that the conveyor belt 12 always abuts against the lower surface of the paper roll 5, thereby driving the unwinding. When the support frame 11 rotates, it drives the arc block 17 connected to it to rotate within the limiting groove, limiting the rotation range of the support frame 11 and providing support when the support frame 11 is in its lowest position, preventing the support frame 11 from contacting the ground.

[0032] like Figure 1 As shown, the dust removal device 8 includes a high-pressure atomizing nozzle 22 and an atomizing device. The high-pressure atomizing nozzle 22 is fixedly installed at the side end of the placement platform 2 and located below the front end of the first conveying pipe. The high-pressure atomizing nozzle 22 is inclined towards the raw paper. When the raw paper is conveyed through the spray area of ​​the high-pressure atomizing nozzle 22, the atomized water molecules can impact the surface of the unwound paper. The atomizing device includes a water tank 23 and an air compressor 24. Both the water tank 23 and the air compressor 24 are placed on the ground next to the frame 1. A water pipe 25 and two air pipes 26 are connected to the high-pressure atomizing nozzle 22. The end of the water pipe 25 away from the high-pressure atomizing nozzle 22 is connected to the water tank 23, and the end of the air pipes 26 away from the high-pressure atomizing nozzle 22 is connected to the air compressor 24. A needle-type water regulating valve 27 for controlling the water flow and an air inlet valve 28 for controlling the air pressure are installed on the high-pressure atomizing nozzle 22.

[0033] like Figure 1 As shown, the needle-type water valve 27 can precisely control the water intake, and the air valve 28 can adjust the air pressure. By controlling the air pressure and water intake, it is ensured that the amount of water mist sprayed is moderate, only slightly wetting the paper surface without penetrating into the paper and causing excessive moisture. Appropriate water mist can maintain a certain level of humidity on the paper surface without making the paper excessively wet. Appropriate humidity can increase the paper's flexibility and plasticity, making it easier to shape during embossing and printing, and reducing delamination and smearing problems caused by dry, brittle paper. After the paper is unwound, it first passes through the area formed by the high-pressure atomizing nozzle 22. This area contains a large number of tiny water mist particles. These water mist particles can fully contact the paper dust in the air. As the water mist particles and dust continuously combine, the dust particles gradually grow larger and heavier. When the weight exceeds the buoyancy of the air, the dust will agglomerate and settle, thereby effectively reducing the dust content in the air and lowering the amount of dust adhering to the paper surface.

[0034] like Figure 1As shown, the dust removal device 8 also includes two sets of atomizing components 29. Each atomizing component 29 includes a pipe 30 and multiple ultrasonic atomizing nozzles 31. The two pipes 30 are respectively positioned diagonally above the first conveyor roller 19 and the second conveyor roller 20. The pipes 30 of the two sets of atomizing components 29 are connected, and the main pipes 30 of the two pipes 30 are connected to a water tank. The pipe 30 spans the width of the paper, and multiple atomizing holes are evenly distributed on the pipe 30. Multiple ultrasonic atomizing nozzles 31 are installed in the multiple atomizing holes. The pipe 30 is positioned above the raw paper, and the multiple ultrasonic atomizing nozzles 31 are arranged along the width of the raw paper, spraying water mist onto the paper. One set of the two sets of atomizing components 29 is located at the rear end of the embossing device 9. After embossing, the imprint on the paper may rebound, causing the pattern to become lighter or disappear. The water sprayed after embossing can increase the humidity of the paper, reduce the elasticity of the fibers, reduce the possibility of rebound, and ensure that the embossing effect meets the design requirements. Another set of atomizing components 29 is located at the rear end of the dyeing and printing device 10. The atomizing operation after dyeing can replenish the paper with an appropriate amount of moisture, allowing the dye to better react chemically with the fibers in a humid environment, promoting dye fixation, improving colorfastness and brightness, and reducing color fading. Simultaneously, the dyeing and printing process may generate some fine dye dust. This dust not only pollutes the production environment but may also adhere to the surface of the napkins, affecting product quality. The water mist generated by the atomizing operation can adsorb dust particles in the air, causing them to settle, reducing dust dispersion, improving air quality in the production workshop, and providing workers with a healthier and more comfortable working environment.

[0035] The implementation principle of this application embodiment is as follows: Before embossing, a region is set up where the paper is atomized by a high-pressure atomizing nozzle 22. This region contains a large number of tiny water mist particles. These water mist particles can fully contact the paper dust in the air. As the water mist particles and dust continuously combine, the dust particles gradually grow larger and increase in weight. When the weight exceeds the buoyancy of the air, the dust will agglomerate and settle down, thereby effectively reducing the dust content in the air and reducing the amount of dust adhering to the paper surface. Atomization regions are also set up after paper embossing and after printing and dyeing, thereby enhancing the embossing effect and printing and dyeing quality, while reducing dye powder and improving the working environment.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A paper roll unwinding dust reducing device, characterized by: The machine includes a frame (1), with a support roller (4) at one end of the frame (1), on which a paper roll (5) is mounted and rotated. The frame (1) is provided with an unwinding mechanism (6) for driving the paper roll (5) to rotate and unwind. The frame (1) is also provided with a conveying assembly (7) to assist in unwinding the paper and a dust removal device (8) for reducing dust. The frame (1) is also provided with an embossing device (9) and a dyeing device (10) for embossing and dyeing, respectively.

2. A paper roll unwinding dust reducing device according to claim 1, characterized in that: The unwinding mechanism (6) includes a support frame (11) which is rotatably connected to the frame (1). A conveyor belt (12) is provided on the support frame (11). The conveyor belt (12) rotates around the support frame (11) and abuts against the surface of the original paper roll (5). The unwinding mechanism (6) also includes a rotating component (13) that drives the support frame (11) to rotate.

3. A paper roll unwinding dust reducing device according to claim 2, characterized in that: The rotating assembly (13) includes a rotating shaft (14) and torsion springs (15) sleeved at both ends of the rotating shaft (14). The two ends of the rotating shaft (14) rotate on the side wall of the frame (1). The rotating shaft (14) passes through and rotates on the support frame (11). The two ends of the support frame (11) are fixedly connected to sleeves (16). The sleeves (16) are sleeved and rotate on the rotating shaft (14). The torsion springs (15) are disposed inside the sleeves (16) and their two ends are fixedly connected to the side wall of the frame (1) and the inner wall of the sleeves (16). An arc block (17) is fixedly connected to the side wall of the sleeve (16) away from the support frame (11). A limiting groove (18) for the arc block (17) to rotate is provided on the side wall of the frame (1).

4. The paper unwinding and dust reducing device according to claim 1, characterized in that: The conveying assembly (7) includes a first conveying roller (19), a second conveying roller (20), and a third conveying roller (21). The first conveying roller (19), the second conveying roller (20), and the third conveying roller (21) are rotatably mounted on the frame (1) and all abut against and rotate on the base paper. The first conveying roller (19) is located between the unwinding mechanism (6) and the embossing device (9). The second conveying roller (20) is located between the embossing device (9) and the printing and dyeing device (10). The third conveying roller (21) is located behind the printing and dyeing device (10).

5. A paper roll unwinding dust reducing device according to claim 4, characterized in that: The dust removal device (8) includes a high-pressure atomizing nozzle (22) and an atomizing device. The high-pressure atomizing nozzle (22) is fixedly installed at the front end of the first conveying roller (19). The raw paper is conveyed through the spray field of the high-pressure atomizing nozzle (22), and the atomized water molecules impact the surface of the unwound paper.

6. A paper roll unwinding dust reducing device according to claim 5, characterized in that: The atomizing device includes a water tank (23) and an air compressor (24). The water tank (23) and the air compressor (24) are both placed on the side of the frame (1). A water pipe (25) and two air pipes (26) are connected to the high-pressure atomizing nozzle (22). The end of the water pipe (25) away from the high-pressure atomizing nozzle (22) is connected to the water tank (23), and the ends of the two air pipes (26) away from the high-pressure atomizing nozzle (22) are both connected to the air compressor (24).

7. A paper roll unwinding dust reducing device according to claim 6, characterized in that: The water storage tank (23) is equipped with a needle-type water regulating valve (27), which is connected to the water pipe (25). An air valve (28) is provided between the air pipe (26) and the high-pressure atomizing nozzle (22).

8. A paper roll unwinding dust reducing device according to claim 5, characterized in that: The dust removal device (8) further includes two sets of atomizing components (29), which are respectively arranged between the embossing device (9) and the printing and dyeing device (10) and after the printing and dyeing device (10); the atomizing component (29) includes a pipe (30) and a plurality of ultrasonic atomizing nozzles (31), a plurality of atomizing holes are evenly opened on the pipe (30), and the plurality of ultrasonic atomizing nozzles (31) are respectively installed in the plurality of atomizing holes. The pipe (30) is arranged above the base paper, and the plurality of ultrasonic atomizing nozzles (31) are arranged along the width direction of the base paper.

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