A structure for a creasing punch paper cooling roller

Abstract

The utility model is used for paper cooling roller technical field, disclose a kind of for indentation punched paper cooling roller structure, including outer roller, the inside of outer roller is inserted and is equipped with inner roller, the outer surface of outer roller is evenly coated with teflon non-stick coating, the spiral water cavity is square groove design.This is used for indentation punched paper cooling roller structure, by the double spiral water cavity of inner roller outer surface opening, after cooling liquid is injected to the inside of outer roller, can enter the inside of spiral water cavity and be pushed forward along rotation, improve the speed of cooling water circulation, the use of spiral water cavity and the surface of outer roller are closer, let cooling water can better take away the heat of through paper, and reduce the volume of outer roller inside while reduce the weight of cooling roller whole, and can prevent ink adhesion by teflon non-stick coating, let paper can be more evenly and efficiently cooled, greatly improve the processing quality of paper and cooling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of paper cooling roller technology, specifically a cooling roller structure for indentation and punching paper. Background Technology

[0002] On high-speed printing production lines for aseptic packaging materials (such as milk and beverage cartons), the printed paper is typically at a high temperature (generally above 50°C). This is due to processes such as ink drying, infrared drying, or hot air drying during printing. High temperatures cause thermal expansion of the paper, significantly reducing its dimensional stability. When this high-temperature paper directly enters subsequent creasing and punching processes, large registration deviations caused by thermal expansion and contraction lead to changes in the actual dimensions at the creasing / punching station. This results in misaligned punching or creasing positions and defective products. Furthermore, high temperatures reduce the mechanical strength of the paper, making it prone to stretching, wrinkling, or curling during traction or rolling, further deteriorating processing consistency. Therefore, paper cooling is necessary. Early production lines often used natural cooling or air cooling, which is slow and uneven, making it difficult to meet the requirements of high-speed (e.g., 200 km / h) printing. Production lines with speeds of m / min or higher require real-time temperature control, leading to the use of cooling rollers. However, commonly used cooling rollers have large internal volumes, hold a lot of water, and have slow thermal response, resulting in large temperature differences between the inlet and outlet water and uneven cooling efficiency. In addition, the roller surface is not treated with anti-stick coating, which can easily cause printing ink to fall off (fade). This will affect the quality of the paper and increase the amount of waste. Utility Model Content

[0003] The purpose of this invention is to provide a cooling roller structure for embossing and punching paper, so as to solve the problems mentioned in the background art, such as the large amount of water stored in traditional cooling rollers, resulting in low heat dissipation efficiency and uneven heat dissipation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cooling roller structure for embossing and punching paper, comprising an outer roller, an inner roller inserted inside the outer roller, and insertion blocks inserted at both ends of the inner roller, the two ends of the inner roller having a stepped design, the two ends of the outer roller having a stepped design, the outer surface of the outer roller being uniformly coated with a Teflon non-stick coating, and a spiral water cavity fixedly formed on the outer surface of the inner roller, the spiral water cavity having a double spiral design, the spiral water cavity having a square groove design, and the outer surface of the spiral water cavity being in contact with the inner surface of the outer roller.

[0005] Preferably, the side surface of the plug block is fixedly provided with a plug block, and the plug block is inserted into the inner roller. The end of the plug block away from the inner roller is fixedly provided with a shaft head, and the shaft head and the interior of the plug block are fixedly provided with a water channel, and the water channel is a T-shaped design.

[0006] By adopting the above technical solution, the connection strength between the inner roller and the plug block can be improved by the insertion of the plug block, the probability of the spiral water cavity rotating inside the outer roller can be reduced, and the T-shaped design of the water channel allows the cooling water to be discharged more easily between the outer roller and the inner roller, greatly reducing the probability of the spiral water cavity slipping when the cooling roller rotates.

[0007] Preferably, the outer roller is threaded with clamping blocks at both ends, and the outer surface of the clamping blocks is uniformly provided with teeth, which are located on the outer side of the outer roller. The insertion block, clamping block, and teeth are concentrically designed, and a set screw is provided between the clamping block and the outer roller.

[0008] By adopting the above technical solution, the wrench can be inserted and rotated to tighten the clamping block through the set teeth, so that the clamping block can move and squeeze the plug block, thereby fixing and plugging the plug block and the inner roller at the same time. The inner roller can be removed to flush the inside of the spiral water chamber and the outer roller, reducing the unusability caused by scale blockage, and greatly improving the convenience of cleaning and unblocking.

[0009] Preferably, the outer surfaces of the clamping block and the insertion block are respectively fitted with sealing rings, and the sealing rings are tightly fitted with the outer surfaces of the shaft head, the outer roller and the inner roller respectively.

[0010] By adopting the above technical solution, the sealing between the shaft head, outer roller and inner roller is ensured by installing the sealing ring, reducing the probability of coolant leakage when passing through the cooling roller.

[0011] Preferably, a second bearing is engaged and installed at one end of the shaft head, and a bearing base is fixedly installed on the outer surface of the second bearing, and a second retaining spring is fixedly installed on the outer surface of the bearing base. A third retaining spring is engaged and fixed at one end of the shaft head, and the bearing base is fixed to the outer surface of the machine.

[0012] By adopting the above technical solution, the outer roller can rotate more smoothly and quickly through the second bearing, and the second bearing can be fixed to the bearing base by the engagement of the second and third snap rings, and the bearing base and the second bearing are fixed to the outer surface of the shaft head, which improves the convenience of installation, disassembly and maintenance.

[0013] Preferably, a wheel axle is fixedly installed on the side of the bearing base near the outer roller, and a first bearing is engaged with the outer surface of the wheel axle. A paper guide sprocket is engaged with the outer surface of the first bearing, and the paper guide sprocket is inserted into the paper.

[0014] By adopting the above technical solution, the paper guide sprocket can rotate more smoothly on the wheel shaft through the first bearing, so that the paper can generate friction and be linked with the cooling roller when passing through the paper guide sprocket, thereby achieving synchronous rotation with the paper path, avoiding paper scratches or slippage, and further reducing uneven feeding caused by paper slippage.

[0015] Preferably, a first retaining spring is engaged at the end of the wheel axle away from the bearing base, and the outer surface of the first retaining spring is in contact with the outer ring of the first bearing. Screws are threaded on both outer surfaces of the paper feed sprocket, and the screws on the outer surface of the paper feed sprocket are in contact with both outer surfaces of the first bearing. The bearing base and the shaft head are concentrically designed, and a rotary joint is threaded on the outer surface of the shaft head. The rotary joint is fixed to the bearing base with screws.

[0016] Using the above technical solution, the first bearing and the paper feed sprocket can be easily and conveniently connected and fixed together by the first snap ring and screws. The use of the rotary joint ensures that the cooling water is not affected when the outer roller rotates. The rotary joint and the shaft head can be connected by PTFE tape, and the fixing of the rotary joint to the bearing base prevents the cooling water from leaking when the outer roller rotates, reducing the probability of cooling water leakage during operation and facilitating disassembly and maintenance.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the structure of the cooling roller for embossing and punching paper is as follows: 1. The double spiral water cavity opened on the outer surface of the inner roller allows the coolant to enter the spiral water cavity after being injected into the outer roller and be pushed forward as it rotates, which increases the speed of cooling water circulation. At the same time, the spiral water cavity is closer to the surface of the outer roller, allowing the cooling water to better remove the heat passing through the paper. It also reduces the internal volume of the outer roller and lightens the overall weight of the cooling roller. Furthermore, the Teflon non-stick coating prevents ink adhesion, allowing the paper to be cooled more evenly and efficiently, greatly improving the paper processing quality and cooling efficiency. 2. By inserting the plug into both sides of the inner roller, the clamping block is screwed into both ends of the outer roller, allowing the plug to be squeezed and clamped to the inner roller, making it easier to disassemble the cooling roller. This facilitates the separation of the outer roller from the inner roller after prolonged use, allowing for rinsing and cleaning of the spiral water chamber and the inner surface of the outer roller. This greatly improves the convenience of maintenance and reduces the chance of clogging and failure. 3. The first bearing allows the paper feed sprocket to rotate more smoothly, generating friction as the paper passes through it and linking with the cooling roller. This ensures the paper feed sprocket rotates synchronously as the paper passes through the cooling roller, preventing scratches or slippage when the paper passes through the outer roller and reducing the chance of external damage to the paper. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the outer roller and rotary joint of this utility model; Figure 2 This is a three-dimensional structural diagram of the paper-feeding sprocket and outer roller of this utility model; Figure 3 This is a three-dimensional cross-sectional view of the outer roller and the spiral water cavity of this utility model; Figure 4 This is a three-dimensional structural diagram of the insert and toothed joint of this utility model; Figure 5 This is a cross-sectional perspective view of the insertion block and clamping block of this utility model. Figure 6 This is a cross-sectional three-dimensional structural diagram of the wheel axle and bearing base of this utility model.

[0019] In the diagram: 1. Outer roller; 2. Inner roller; 3. Spiral water cavity; 4. Insert block; 5. Insert block; 6. Shaft head; 7. Water channel; 8. Sealing ring; 9. Pressing block; 10. Gear; 11. Wheel shaft; 12. Paper feed sprocket; 13. First bearing; 14. First snap ring; 15. Bearing base; 16. Second bearing; 17. Second snap ring; 18. Third snap ring; 19. Rotary joint; 20. Teflon non-stick coating. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6 This utility model provides a technical solution: a cooling roller structure for embossing and punching paper, including an outer roller 1, an inner roller 2 inserted inside the outer roller 1, and insertion blocks 4 inserted at both ends of the inner roller 2. The two ends of the inner roller 2 are stepped, and the two ends of the outer roller 1 are stepped. The outer surface of the outer roller 1 is uniformly coated with a Teflon non-stick coating 20. A spiral water cavity 3 is fixedly opened on the outer surface of the inner roller 2. The spiral water cavity 3 is a double spiral design and a square groove design. The outer surface of the spiral water cavity 3 is in contact with the inner surface of the outer roller 1. An insertion block 5 is fixedly opened on the side surface of the insertion block 4 and is inserted into the inner roller 2. A shaft head 6 is fixedly opened at the end of the insertion block 4 away from the inner roller 2. A water channel 7 is fixedly opened inside the shaft head 6 and the insertion block 4. The water channel 7 is a T-shaped design.

[0022] First, when the paper passes through, it drives the outer roller 1 to rotate, allowing the second bearing 16 to rotate rapidly through the shaft head 6 to adapt to the speed of the paper. The Teflon non-stick coating 20 prevents ink from adhering to the outer surface of the outer roller 1. Cooling water injected between the outer roller 1 and the inner roller 2 through the water channel 7 is pushed into the spiral water chamber 3 by the rotation of the inner roller 2 and the force of the cooling water. The spiral water chamber 3, with its double layer, allows more cooling water to pass through more quickly, carrying away the heat of the paper passing through the cooling roller. This allows the paper to cool more evenly, reducing dimensional inaccuracies in subsequent processing caused by thermal expansion and contraction and uneven cooling. This greatly improves the quality of paper processing by the cooling roller and reduces the generation of paper waste.

[0023] The outer roller 1 has a pressing block 9 threaded on both ends, and the outer surface of the pressing block 9 is evenly provided with teeth 10, and the teeth 10 are located on the outside of the outer roller 1. The plug block 4, the pressing block 9, and the teeth 10 are concentrically designed. A set screw is provided between the pressing block 9 and the outer roller 1. The outer surfaces of the pressing block 9 and the plug block 4 are respectively fitted with sealing rings 8, and the sealing rings 8 are tightly fitted with the outer surfaces of the shaft head 6, the outer roller 1, and the inner roller 2.

[0024] Secondly, if the spiral water cavity 3 between the outer roller 1 and the inner roller 2 becomes clogged after prolonged use, the crescent wrench can be inserted into the toothed end 10 and rotated to remove the clamping block 9. Then, the insert block 4 and the inner roller 2 can be removed from the outer roller 1 in sequence, and the insert block 4 can be pulled out to separate the insert block 5 from the inner roller 2. After that, the outer surface of the outer roller 1 and the spiral water cavity 3 can be flushed to remove the clogged impurities. Then, the insert block 4 can be inserted back into the inner roller 2, and the insert block 5 can be clamped back into the inner roller 2. The shaft head 6 can be inserted into the clamping block 9. Then, the inner roller 2 can be inserted back into the outer roller 1 and the clamping block 9 can be turned. The gap between the inner roller 2, the insert block 4, the outer roller 1, the clamping block 9 and the shaft head 6 can be sealed by the sealing ring 8. This completes the cleaning and maintenance of the cooling roller, greatly improving the convenience of cooling roller maintenance.

[0025] A second bearing 16 is engaged and installed at one end of the shaft head 6, and a bearing base 15 is fixedly installed on the outer surface of the second bearing 16. A second retaining spring 17 is fixedly installed on the outer surface of the bearing base 15. A third retaining spring 18 is engaged and fixed at one end of the shaft head 6. The bearing base 15 is fixed to the outer surface of the machine. A wheel shaft 11 is fixedly installed on the side of the bearing base 15 near the outer roller 1, and a first bearing 13 is engaged and installed on the outer surface of the wheel shaft 11. A paper feed sprocket 12 is engaged and installed on the outer surface of the first bearing 13, and the paper feed sprocket 12 is inserted into the paper. A first retaining spring 14 is engaged and installed at the end of the wheel shaft 11 away from the bearing base 15, and the outer surface of the first retaining spring 14 is in contact with the outer ring of the first bearing 13. Screws are threaded on both sides of the outer surface of the paper feed sprocket 12, and the screws on the outer surface of the paper feed sprocket 12 are in contact with both sides of the outer surface of the first bearing 13.

[0026] Furthermore, the second bearing 16 can be fixed to the outer surface of the bearing base 15 and the shaft head 6 by the second retaining ring 17 and the third retaining ring 18, which facilitates the installation and fixation of the second bearing 16 and makes it easy to replace the second bearing 16 if it is damaged in the future. At the same time, when the paper passes through the outer roller 1, it will drive the paper guide sprocket 12 to rotate together. The first bearing 13 makes the paper guide sprocket 12 rotate more smoothly, allowing the paper guide sprocket 12 to rotate on the outer surface of the wheel shaft 11. The first retaining ring 14 limits the first bearing 13, so that the paper guide sprocket 12 can rotate synchronously when the outer roller 1 rotates, so as to avoid the paper shifting position during the movement and to avoid the paper being scratched or slipping, thereby improving the quality of the paper after processing.

[0027] The bearing base 15 and the shaft head 6 are concentrically designed, and the outer surface of the shaft head 6 is threaded with a rotary joint 19, which is fixed to the bearing base 15 with screws.

[0028] Furthermore, when the outer roller 1 rotates, it will drive the shaft head 6 to rotate synchronously. At this time, cooling water can be injected into the interior of the outer roller 1 through the rotary joint 19, so that the cooling water can pass smoothly while the outer roller 1 is rotating, and the rotary joint 19 can be easily disassembled for maintenance.

[0029] Working principle: Cooling water is injected into the shaft head 6 through the rotary joint 19 and then into the interior of the outer roller 1 and inner roller 2 through the water channel 7. As the paper moves, the outer roller 1 rotates together. The Teflon non-stick coating 20 prevents the ink on the paper from adhering to the outer surface of the outer roller 1. The incoming cooling water enters the spiral water chamber 3 and is discharged from the other rotary joint 19 at an accelerated speed. This allows the coolant to better remove the temperature from the surface of the outer roller 1, making the paper cool more evenly. It also allows the paper guide sprocket 12 to rotate synchronously and increases the anti-slip properties of the paper. This ensures that the paper is cooled more evenly without affecting subsequent paper processing and reduces the generation of paper waste.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cooling roller structure for embossing and punching paper, comprising an outer roller (1), an inner roller (2) inserted inside the outer roller (1), and insertion blocks (4) inserted at both ends of the inner roller (2), wherein both ends of the inner roller (2) are stepped, and both ends of the outer roller (1) are stepped, characterized in that: The outer surface of the outer roller (1) is uniformly coated with a Teflon non-stick coating (20). The outer surface of the inner roller (2) is fixedly provided with a spiral water cavity (3), and the spiral water cavity (3) is a double spiral design. The spiral water cavity (3) is a square groove design, and the outer surface of the spiral water cavity (3) is in contact with the inner surface of the outer roller (1).

2. The cooling roller structure for embossing and punching paper according to claim 1, characterized in that: The side surface of the plug-in block (4) is fixedly provided with a plug (5), and the plug (5) is inserted into the inner roller (2). The end of the plug-in block (4) away from the inner roller (2) is fixedly provided with a shaft head (6), and the shaft head (6) and the interior of the plug-in block (4) are fixedly provided with a water channel (7), and the water channel (7) is a T-shaped design.

3. The cooling roller structure for embossing and punching paper according to claim 1, characterized in that: The outer roller (1) has a pressing block (9) threaded on both ends, and the outer surface of the pressing block (9) is evenly provided with teeth (10), and the teeth (10) are located on the outside of the outer roller (1). The plug block (4), pressing block (9) and teeth (10) are concentrically designed. A set screw is provided between the pressing block (9) and the outer roller (1).

4. The cooling roller structure for embossing and punching paper according to claim 3, characterized in that: The outer surfaces of the clamping block (9) and the plug block (4) are respectively fitted with sealing rings (8), and the sealing rings (8) are tightly fitted with the outer surfaces of the shaft head (6), the outer roller (1) and the inner roller (2).

5. The cooling roller structure for embossing and punching paper according to claim 2, characterized in that: One end of the shaft head (6) is fitted with a second bearing (16), and a bearing base (15) is fixedly installed on the outer surface of the second bearing (16). A second snap ring (17) is fixedly installed on the outer surface of the bearing base (15). One end of the shaft head (6) is fitted with a third snap ring (18), and the bearing base (15) is fixed on the outer surface of the machine.

6. The cooling roller structure for embossing and punching paper according to claim 5, characterized in that: The bearing base (15) is fixedly installed with a wheel shaft (11) on the side near the outer roller (1), and a first bearing (13) is engaged on the outer surface of the wheel shaft (11). A paper guide sprocket (12) is engaged on the outer surface of the first bearing (13), and the paper guide sprocket (12) is inserted into the paper.

7. The cooling roller structure for embossing and punching paper according to claim 6, characterized in that: The wheel axle (11) is fitted with a first retaining ring (14) at the end away from the bearing base (15), and the outer surface of the first retaining ring (14) is in contact with the outer ring of the first bearing (13). The outer surfaces of the paper feed sprocket (12) are threaded with screws, and the screws on the outer surface of the paper feed sprocket (12) are in contact with the outer surfaces of the first bearing (13). The bearing base (15) and the shaft head (6) are concentrically designed, and the outer surface of the shaft head (6) is threaded with a rotary joint (19). The rotary joint (19) is fixed to the bearing base (15) with screws.

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