A corona roller

Abstract

The utility model relates to a corona roller, include: the roller body, including the hollow appearance's outer tube, be provided with the side stop piece in the left and right sides of outer tube, the middle part of outer tube is provided with the partition cover, the inside of partition cover is integratively connected with the middle axle, the middle axle middle part is provided with the buffer cavity, the both will divide into left flow passage space and right flow passage space with partition cover and the middle axle two outer tubes, be equipped with the passage in the middle axle and partition cover, form left inlet channel and right inlet channel, left inlet channel and right inlet channel all are linked with buffer cavity, the joint structure includes swivel joint no.

Description

Technical Field

[0001] This utility model relates to the field of thin film corona treatment technology, specifically to a corona roller. Background Technology

[0002] Thin film corona treatment is a process that modifies the surface of polymer films through high-frequency high-voltage discharge, aiming to improve the surface energy, wettability and adhesion of the films. It is widely used in packaging, battery separators and other fields.

[0003] In the corona treatment process, the corona roller and the corona pressure roller work together. In addition, plasma discharge is induced on the film surface by a high-voltage electric field. During the operation of the corona roller, a large amount of heat is generated. If the temperature is too high, the film will soften, the thickness will be uneven, the surface treatment will fail, and the film performance will be inconsistent. In order to ensure the quality of the film, it is generally cooled by water cooling. Specifically, the cooling water flows from one end of the corona roller to the other end to remove the heat from the corona roller. The temperature of the water gradually rises during the flow, resulting in a relatively large temperature difference between the two ends of the corona roller. Therefore, a corona roller is proposed. Utility Model Content

[0004] Based on the above description, this utility model provides a corona roller that solves the technical problems pointed out in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A corona roller, comprising:

[0006] The roller body includes a hollow outer cylinder, side baffles on the left and right sides of the outer cylinder, a partition sleeve in the middle of the outer cylinder, a central shaft integrally connected to the inner side of the partition sleeve, a buffer cavity in the middle of the central shaft, the partition sleeve and the central shaft divide the inner part of the outer cylinder into a left flow channel space and a right flow channel space, and both the central shaft and the partition sleeve are provided with channels to form a left inlet channel and a right inlet channel, both of which are connected to the buffer cavity;

[0007] The joint structure includes a rotary joint one and a rotary joint two, with the roller body rotatably disposed between the two;

[0008] The water pipe is detachably connected to the rotary joint, with one end of the water pipe passing through the rotary joint and the corresponding side stop and extending into the buffer cavity.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, two sets of spiral plates are provided on the outer side of the central shaft, with the spiral directions of the two sets of spiral plates being opposite.

[0011] Furthermore, the rotary joint one and rotary joint two have the same structure, both are stepped shafts, and their opposite ends are located inside the corresponding side stops. Both have an inner hole inside, and both have a drain hole at the bottom. The inner hole and the drain hole are connected, and the inner hole includes a small hole, a large hole and a medium hole arranged in sequence. The diameter of the medium hole and the large hole is larger than the diameter of the water pipe, and the diameter of the small hole is equal to the diameter of the water pipe.

[0012] Furthermore, the side baffle has a through hole, the diameter of which is larger than the diameter of the water pipe.

[0013] Furthermore, a hollow cavity is formed inside the central axis, and there are two sets of hollow cavities in total.

[0014] Furthermore, an extension shaft is integrally connected to the end of the central axis away from the water pipe, and the diameter of the extension shaft is equal to the diameter of the water pipe.

[0015] Furthermore, each of the two sets of side stops has an installation port on its opposite side, and a bearing is provided at the installation port. The bearing is assembled on the outside of rotary joint one and rotary joint two.

[0016] Furthermore, the central axis is rotatably positioned on the outside of the water pipe.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0018] This corona roller improves the temperature difference between the two ends by first guiding cooling water to the middle of the roller body and then using a bidirectional flow design to cool the left and right sides of the roller body simultaneously, thus avoiding an excessive temperature difference between the two ends of the corona roller. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a corona roller provided in an embodiment of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of a half-section three-dimensional structure;

[0021] Figure 3 for Figure 1 A schematic diagram of a half-section planar structure;

[0022] Figure 4 for Figure 3 A magnified view of a portion of region A in the middle.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Roller body; 11. Outer cylinder; 12. Side baffle; 121. Perforation; 13. Partition sleeve; 14. Central shaft; 141. Spiral plate; 142. Hollow cavity; 143. Extension shaft; 15. Buffer cavity; 16. Left flow channel space; 17. Right flow channel space; 18. Left inlet channel; 19. Right inlet channel; 2. Joint structure; 21. Rotary joint one; 22. Rotary joint two; 23. Inner hole; 24. Drain hole; 3. Water pipe. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] like Figure 1-4 As shown in the figure, a corona roller in this embodiment is used in a corona treatment machine. It includes a roller body 1, a connector structure 2 and a water pipe 3. The roller body 1 is mounted on the power processing machine frame. The power processing machine and its frame are not shown in the figure. This is prior art and will not be described in detail here.

[0027] In the prior art, since the corona roller generates a lot of heat during operation, it is generally cooled by water in order to ensure the quality of the film. Specifically, the cooling water flows from one end of the corona roller to the other end to carry away the heat on the corona roller. However, the temperature of the water will gradually rise during the flow, resulting in a relatively large temperature difference between the two ends of the corona roller, especially when the corona roller is long.

[0028] To improve or reduce temperature differences, firstly, such as Figure 2 As shown, the roller body 1 in this embodiment includes a hollow cylindrical outer cylinder 11 made of a metal thermally conductive material. The surface is used to contact the thin film and transmit a high-voltage electric field. Side baffles 12 are fixedly arranged on the left and right sides of the outer cylinder 11. The side baffles 12 are stepped shafts and include an adapter located in the outer cylinder 11. The diameter of this adapter is equal to the inner diameter of the outer cylinder 11. The side baffles 12 also include a fitting part that fits against the end face of the outer cylinder 11 and has the same diameter, and a support part that connects to the connector structure 2. In practice, the support part is rotatably connected to the bracket of the corona treatment machine. In addition, a through hole 121 is opened through the end face of the side baffles 12. The diameter of the through hole 121 is larger than the diameter of the water pipe 3 to accommodate the passage of the water pipe 3.

[0029] A partition sleeve 13 is fixedly installed in the middle of the outer cylinder 11. It should be noted that the diameter of the partition sleeve 13 is equal to the inner diameter of the outer cylinder 11. The inner side of the partition sleeve 13 is integrally connected to a central shaft 14 extending to the left and right sides. A hollow cavity 142 is opened in the central shaft 14. There are two sets of hollow cavities 142, which are symmetrically arranged to reduce the counterweight. In addition, a buffer cavity 15 is opened in the middle of the central shaft 14 to distribute cooling water and allow the water pipe 3 to be rotatably installed on the outer side of the central shaft 14. The partition sleeve 13 and the central shaft 14 divide the inner part of the outer cylinder 11 into a left flow channel space 16 and a right flow channel space 17. Both the central shaft 14 and the partition sleeve 13 are provided with channels to form a left inlet channel 18 and a right inlet channel 19. Both the left inlet channel 18 and the right inlet channel 19 are connected to the buffer cavity 15.

[0030] Secondly, the joint structure 2 includes a rotary joint 1 21 and a rotary joint 22, with the roller body 1 rotatably disposed between the two. For example, the rotary joint 1 21 and the rotary joint 22 are each fixedly disposed on the opposite side of the corona treatment machine frame.

[0031] Further explanation: each of the two sets of side baffles 12 has an installation port on its opposite side, and a bearing is installed at the installation port. The bearing is mounted on the outside of the rotary joint 1 21 and rotary joint 22. Thus, when the roller 1 rotates, the rotary joint 1 21, rotary joint 22 and water pipe 3 are stationary. The rotary joint 1 21 and rotary joint 22 have the same structure, both of which are stepped shafts. The opposite ends of the two are located inside the corresponding side baffles 12 to ensure sealing. Both have an inner hole 23 inside, and both have a drain hole 24 at the bottom. The inner hole 23 and the drain hole 24 are connected. The inner hole 23 includes a small hole, a large hole and a medium hole arranged in sequence. The diameter of the medium hole and the large hole is larger than the diameter of the water pipe 3, and the diameter of the small hole is equal to the diameter of the water pipe 3. The drain hole 24 is specifically connected to the large hole, thus forming a water outlet channel.

[0032] Water pipe 3, for example, is detachably connected to rotary joint 21 by bolts. One end of water pipe 3 passes through rotary joint 21 and the corresponding side baffle 12 and extends into buffer chamber 15, so that water is diverted from the middle of roller body 1 to both sides.

[0033] In the above design, when cooling water enters the buffer chamber 15, the cooling water is diverted to the left flow space 16 and the right flow space 17 through the left inlet 18 and the right inlet 19. With this design, the cooling water is first guided to the middle of the roller body 1, and then the bidirectional flow design allows the left and right sides of the roller body 1 to be cooled simultaneously, thereby improving the temperature difference between the two ends of the corona roller, that is, avoiding the temperature difference between the two ends of the corona roller being too large. Finally, the cooling water flows out from the joint structure 2.

[0034] In the preferred design, the end of the central shaft 14 away from the water pipe 3 is integrally connected to an extension shaft 143. The diameter of the extension shaft 143 is equal to the diameter of the water pipe 3. The extension shaft 143 is solid, and its end away from the central shaft 14 is specifically located inside the small hole of the rotary joint 22, so that the water passage on the left side is symmetrical to the water passage on the right side.

[0035] In another embodiment, two sets of spiral plates 141 are welded to the outer side of the central shaft 14 to create turbulence and enhance heat exchange efficiency. The spiral directions of the two sets of spiral plates 141 are opposite.

[0036] In summary:

[0037] Water intake stage: Cooling water is injected into buffer chamber 15 from water pipe 3;

[0038] Bidirectional flow splitting: One part of the water flows through the left inlet 18 into the left flow channel space 16 and is guided to flow along the left-hand spiral plate 141; the other part of the water flows through the right inlet 19 into the right flow channel space 17 and is guided to flow along the right-hand spiral plate 141.

[0039] Heat exchange process: Water absorbs heat from the outer cylinder 11 in the left flow channel space 16 / right flow channel space 17, and the spiral plate 141 extends the flow path and enhances turbulence;

[0040] Drainage stage: Water flows through the inside of the side baffle 12 and into the inner hole 23 of the rotary joint 1 21 and rotary joint 22, and finally exits from the drain hole 24 for external recycling and reuse. Recycling and reuse, for example, is to cool down and put it back into use. This is not the focus of this case and will not be elaborated on here.

[0041] The bidirectional flow design enables simultaneous cooling on both sides of the roller 1, thereby improving the temperature difference between the two ends of the corona roller, thus avoiding excessive temperature difference between the two ends of the corona roller and preventing uneven heating of the film.

[0042] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A corona roller, characterized in that, include: The roller body (1) includes a hollow outer cylinder (11), side baffles (12) are provided on the left and right sides of the outer cylinder (11), a partition sleeve (13) is provided in the middle of the outer cylinder (11), a central shaft (14) is integrally connected to the inner side of the partition sleeve (13), a buffer cavity (15) is provided in the middle of the central shaft (14), the partition sleeve (13) and the central shaft (14) divide the inner part of the outer cylinder (11) into a left flow channel space (16) and a right flow channel space (17), and a channel is provided in both the central shaft (14) and the partition sleeve (13) to form a left inlet channel (18) and a right inlet channel (19), and the left inlet channel (18) and the right inlet channel (19) are connected to the buffer cavity (15); The joint structure (2) includes a rotary joint one (21) and a rotary joint two (22), and the roller body (1) is rotatably disposed between the two; Water pipe (3) is detachably connected to rotary joint (21). One end of water pipe (3) passes through rotary joint (21) and the corresponding side stop (12) and extends into buffer cavity (15).

2. The corona roller according to claim 1, characterized in that: Two sets of spiral plates (141) are provided on the outer side of the central shaft (14), and the spiral directions of the two sets of spiral plates (141) are opposite.

3. A corona roller according to claim 2, characterized in that: The rotary joint one (21) and rotary joint two (22) have the same structure. Both are stepped shafts. The opposite ends of both are located inside the corresponding side stop (12). Both have an inner hole (23) inside and a drain hole (24) at the bottom. The inner hole (23) is connected to the drain hole (24). The inner hole (23) includes a small hole, a large hole and a medium hole arranged in sequence. The diameter of the medium hole and the large hole is larger than the diameter of the water pipe (3). The diameter of the small hole is equal to the diameter of the water pipe (3).

4. A corona roller according to claim 3, characterized in that: The side baffle (12) has a through hole (121) with a diameter larger than that of the water pipe (3).

5. A corona roller according to claim 4, characterized in that: The central axis (14) has a hollow cavity (142) inside, and there are two sets of hollow cavities (142).

6. A corona roller according to claim 5, characterized in that: The central shaft (14) is integrally connected to an extension shaft (143) at the end away from the water pipe (3), and the diameter of the extension shaft (143) is equal to the diameter of the water pipe (3).

7. A corona roller according to claim 1, characterized in that: Both sets of side stops (12) have mounting openings on opposite sides, and bearings are installed at the mounting openings. The bearings are mounted on the outside of rotary joint one (21) and rotary joint two (22).

8. A corona roller according to claim 1, characterized in that: The central axis (14) is rotatably positioned on the outside of the water pipe (3).

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