Cold drum device for a coating installation

Abstract

The application discloses a cold drum device for a winding coating equipment, which comprises a cold drum body, an outer wall of which is processed with 4n spiral flow channels, and the flow directions of adjacent spiral flow channels are opposite; a cold drum outer sleeve fixed on the outer periphery of the cold drum body; and a water inlet and outlet assembly installed on the cold drum body and comprising a middle shaft, a water return pipe installed on one end of the middle shaft, and a water inlet pipe coaxially installed inside the water return pipe, a water return flow channel being formed between the water inlet pipe and the water return pipe, 4n water inlet holes being arranged on the outer wall of the water return pipe and located at the water outlet end of the water inlet pipe, the 4n water inlet holes being divided into two groups and connected to the water inlet ports of the spiral flow channels at the axial two ends of the cold drum body through water inlet branch pipes, 4n water outlet holes being arranged on the outer wall of the water return pipe and located at the water inlet end of the water return flow channel, and the 4n water outlet holes being divided into two groups and connected to the water outlet ports of the spiral flow channels at the axial two ends of the cold drum body through water outlet branch pipes, wherein n is a natural number greater than or equal to 1. The cold drum device can make the surface temperature of the cold drum more uniform and improve the coating efficiency.

Description

Technical Field

[0001] This invention relates to the field of magnetic control equipment technology, and in particular to a cooling drum device for a roll-to-roll coating equipment. Background Technology

[0002] In the thin film industry, when performing metallization processes on thin films, a roll-to-roll flexible coating equipment is used. The film is wound up and unwound at the same time, with a large-diameter cooling drum in the middle. The film is coated after being pressed tightly against the cooling drum. Because the coating process generates a lot of heat, the cooling drum is needed to dissipate the heat.

[0003] Most existing cooling drum equipment is actually a straight-through flow channel, made of steel body, with deep holes drilled through the drum surface. It has a structure with water entering at one end and returning at the other end. The drum surface temperature is uneven, resulting in poor cooling effect on the diaphragm. Summary of the Invention

[0004] The purpose of this invention is to provide a cooling drum device for a roll-to-roll coating equipment, which improves the heat dissipation efficiency of the thin film during the coating process, ensures that the thin film product is free from deformation and burns, and can also increase the coating power, thereby improving efficiency and production capacity.

[0005] Based on the above problems, the technical solution provided by the present invention is as follows:

[0006] A cooling drum unit for a roll-to-roll coating equipment includes:

[0007] The cooling drum body has 4n spiral flow channels machined on its outer wall, and the flow directions of adjacent spiral flow channels are opposite.

[0008] A cooling drum jacket is fixed to the outer periphery of the cooling drum body to separate the 4n spiral flow channels;

[0009] The water inlet and outlet assembly, installed on the cooling drum body, includes an intermediate shaft, a return water pipe installed at one end of the intermediate shaft, and an inlet water pipe coaxially installed inside the return water pipe. A return water flow channel is formed between the inlet water pipe and the return water pipe. The outer wall of the return water pipe has 4n inlet holes at the outlet end of the inlet water pipe. The 4n inlet holes are divided into two groups and connected to the spiral flow channel inlets at both ends of the cooling drum body via inlet branch pipes. The outer wall of the return water pipe has 4n outlet holes at the inlet end of the return water flow channel. The 4n outlet holes are divided into two groups and connected to the spiral flow channel outlets at both ends of the cooling drum body via outlet branch pipes, where n is a natural number ≥ 1.

[0010] In some embodiments, end panels are fixed at both ends of the cooling drum body, and 4n water-passing components are evenly arranged on the end panels along the circumference. The water-passing components are used to connect the water inlet branch pipe to the water inlet of the spiral flow channel, or to connect the water outlet branch pipe to the water outlet of the spiral flow channel.

[0011] In some embodiments, the water-passing component includes a water-passing component body and a water-passing component end cap fixed on the water-passing component body. One end of the water-passing component body is connected to the water inlet branch pipe / water outlet branch pipe, and the other end of the water-passing component body is connected to the spiral flow channel inlet / spiral flow channel outlet.

[0012] In some embodiments, the inlet / outlet branch pipe is supported on the end panel and extends to the water-passing component body, and a sealing ring is provided between the water-passing component body and the spiral flow channel inlet / spiral flow channel outlet.

[0013] In some embodiments, end caps are provided at both axial ends of the cooling drum body, and the end caps are fixed to the outside of the water-passing component.

[0014] In some embodiments, the intermediate shaft includes a shaft body, a plug fixed to one end of the shaft body near the return water pipe, and a shaft head fixed to one end of the shaft body away from the return water pipe. The shaft head is supported on the end panel and end cover and extends to the axial outer side of the cooling drum body. The return water pipe is supported on the end panel and end cover and is fixedly connected to the plug.

[0015] In some embodiments, a water pipe fixing plate is provided on the outer wall of the shaft to support the inlet or outlet branch pipes away from the return water pipe.

[0016] In some embodiments, the inner wall of the return water pipe is provided with a water pipe connector and a water pipe support. The water pipe connector is fixedly connected to the outlet end of the inlet water pipe and separates the inlet and outlet water holes. The water pipe support is fixedly connected to the inlet end of the inlet water pipe and connects to a rotary joint that divides the inlet and outlet water.

[0017] In some embodiments, the cooling drum body is an aluminum alloy component.

[0018] In some embodiments, the outer surface of the cooling drum jacket is provided with a ceramic insulating layer, the roughness of which is below Ra0.1.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. 4n spiral flow channels are machined on the outer wall of the cooling drum body, and the adjacent spiral flow channels flow in opposite directions, which makes the surface temperature of the cooling drum more uniform. At the same time, the cooling drum body is made of aluminum alloy, which has a higher thermal conductivity, thereby improving the heat dissipation effect on the film, avoiding film deformation or burns, thereby improving the film coating efficiency and increasing production capacity.

[0021] 2. The overall structure of the cooling drum device is modular, which facilitates processing and installation.

[0022] 3. The inlet and outlet water of each spiral flow channel are relatively independent, and each channel is connected to the inlet or outlet water pipe with a separate water passage component, so that the flow rate is evenly distributed, thereby further improving the uniformity of the surface temperature of the cooling drum body.

[0023] 4. A ceramic insulating layer is sprayed onto the outer surface of the cold drum jacket, and the surface roughness is below Ra0.1, making the drum surface smoother, the adhesion effect better, and the heat dissipation effect of the film better. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a cooling drum device for a roll-to-roll coating equipment according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure for removing the cooling drum jacket according to an embodiment of the present invention;

[0027] Figure 3 This is one of the structural schematic diagrams of the cooling drum body in an embodiment of the present invention;

[0028] Figure 4 for Figure 3 Schematic diagram of the AA section;

[0029] Figure 5 This is a second schematic diagram of the structure of the cooling drum body in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the water inlet and outlet components in an embodiment of the present invention;

[0031] Figure 7 This is one of the structural schematic diagrams of the water-passing component in an embodiment of the present invention;

[0032] Figure 8 This is a second schematic diagram of the structure of the water-passing component in an embodiment of the present invention;

[0033] Figures 9 to 12 This is a schematic diagram showing the inlet and outlet water flow directions of the four spiral channels in an embodiment of the present invention;

[0034] in:

[0035] 100. Cooling drum body; 101. Spiral flow channel; 101a. First spiral flow channel; 101b. Second spiral flow channel; 101c. Third spiral flow channel; 101d. Fourth spiral flow channel; 102. Spiral flow channel inlet; 103. Spiral flow channel outlet;

[0036] 200. Cold drum cover;

[0037] 300. Water inlet / outlet assembly; 301. Shaft body; 302. Plug; 303. Shaft head; 304. Return water pipe; 304a. Water inlet hole; 304b. Water outlet hole; 305. Water inlet pipe; 306. Water inlet branch pipe; 307. Water outlet branch pipe; 308. Water pipe connector; 309. Water pipe support; 309a. Through hole; 309b. Support leg; 310. Water pipe fixing plate;

[0038] 400, End panel;

[0039] 500. Water-passing component; 501. Water-passing component body; 502. Water-passing component end cap; 503. Sealing ring;

[0040] 600. End cap. Detailed Implementation

[0041] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0042] like Figure 1 and Figure 2 The diagram shown is a structural schematic of an embodiment of the present invention. A cooling drum device for a roll-to-roll coating equipment is provided, including a cooling drum body 100, a cooling drum outer sleeve 200 fixed outside the cooling drum body 100, and a water inlet assembly 300 installed on the cooling drum body 100.

[0043] like Figures 3 to 5 As shown, the cooling drum body 100 is a hollow cylindrical structure made of aluminum alloy. 4n spiral flow channels 101 are machined on the outer wall of the cooling drum body 100, and the cooling water in adjacent spiral flow channels 101 flows in opposite directions, where n is a natural number ≥ 1. In this example, n = 1, that is, 4 spiral flow channels 101 are machined on the surface of the cooling drum body 100, namely the first spiral flow channel 101a, the second spiral flow channel 101b, the third spiral flow channel 101c, and the fourth spiral flow channel 101d. It should be understood that in other embodiments, when the volume (outer diameter) of the cooling drum body 100 is larger, more spiral flow channels 101 can be provided.

[0044] The cooling drum jacket 200 is welded and fixed to the outer periphery of the cooling drum body 100 to separate the four spiral flow channels 101, making each spiral flow channel 101 relatively independent. To improve heat dissipation performance, a ceramic insulating layer is sprayed onto the outer wall of the cooling drum jacket 200. The roughness of the ceramic insulating layer is below Ra0.1, which makes the outer surface of the cooling drum device smoother, improves the adhesion of the thin film, and thus improves heat dissipation efficiency.

[0045] like Figure 6 As shown, the water inlet and outlet assembly 300 includes an intermediate shaft, a return water pipe 304 installed at one end of the intermediate shaft, and an inlet water pipe 305 coaxially installed inside the return water pipe 304, forming a return water flow channel between the inlet water pipe 305 and the return water pipe 304.

[0046] Four inlet holes 304a are provided on the outer wall of the return water channel at the outlet end of the inlet pipe 304. The four inlet holes 304a are evenly spaced around the circumference of the return water pipe 304 and are divided into two groups. They are connected to the spiral flow channel inlets 102 at both ends of the cooling drum body 100 via inlet branch pipes 306. That is, two inlet holes 304a are connected to one end of the cooling drum body 100 via inlet branch pipes 306, and the other two inlet holes 304a are connected to the other end of the cooling drum body 100 via inlet branch pipes 306 (e.g., Figures 9 to 12 (As shown).

[0047] Four water outlets 304b are provided on the outer wall of the return water pipe 304 at the inlet end of the return water channel. The four water outlets 304b are evenly spaced around the circumference of the return water pipe 304 and are divided into two groups. They are connected to the spiral flow channel outlets 103 at both ends of the cooling drum body 100 via water outlet branch pipes 307. That is, two water outlets 304b are connected to one end of the cooling drum body 100 via water outlet branch pipes 307, and the other two water outlets 304b are connected to the other end of the cooling drum body 100 via water inlet branch pipes 306 (e.g., Figures 9 to 12 As shown), a water inlet is provided on the spiral flow channel 101 on the outer peripheral surface of the cooling drum body 100 to connect the spiral flow channel inlet 102 / spiral flow channel outlet 103 with the spiral flow channel 101, thereby forming a two-inlet and two-outlet spiral flow channel 101 on the surface of the cooling drum, and ensuring that the cooling water flows in opposite directions in adjacent spiral flow channels 101.

[0048] To facilitate the connection between the inlet branch pipe 306, the outlet branch pipe 307, and the spiral flow channel 101, end panels 400 are fixed at both ends of the cooling drum body 100 along its axial direction. Four water-passing components 500 are evenly arranged circumferentially on the end panels 400. These components connect the inlet branch pipe 306 to the spiral flow channel inlet 102, or the outlet branch pipe 307 to the spiral flow channel outlet 103. This allows for relatively independent water inlet and outlet for each spiral flow channel 101, further improving the uniformity of the cooling drum surface temperature.

[0049] like Figure 7 and Figure 8 As shown, the water-passing component 500 includes a water-passing component body 501 and a water-passing component end cap 502 fixed to the water-passing component body 501. One end of the water-passing component body 501 in the longitudinal direction is connected to the inlet branch pipe 306 / outlet branch pipe 307, and the other end of the water-passing component body 501 in the longitudinal direction is connected to the spiral flow channel inlet 102 / spiral flow channel outlet 103. The water-passing component body 501 is fixed to the end panel 400 by screws. The inlet branch pipe 306 / outlet branch pipe 307 is supported on the end panel 400 and extends to the water-passing component body 501. A sealing ring 503 is provided between the water-passing component body 501 and the spiral flow channel inlet 102 / spiral flow channel outlet 103.

[0050] To improve the compactness of the structure, end caps 600 are provided at both ends of the axial direction of the cooling drum body 100, and the end caps 600 are fixed to the outside of the water-passing component 500.

[0051] The intermediate shaft includes a shaft body 301, a plug 302 fixed to one end of the shaft body 301 near the return water pipe 304, and a shaft head 303 fixed to one end of the shaft body 301 away from the return water pipe 305. The shaft head 303 is supported on the end panel 400 and the end cover 600 and extends to the axial outer side of the cooling drum body 100. The return water pipe 304 is supported on the end panel 400 and the end cover 600 and is welded and fixed to the plug 303.

[0052] To improve structural stability, a water pipe fixing plate 310 is welded to the outer wall of the shaft 301 to support the water inlet branch pipe 306 or water outlet branch pipe 307 that is far from the return water pipe 304. Since the water inlet branch pipe 306 or water outlet branch pipe 307 that is far from the return water pipe 304 needs to penetrate the axial direction of the cooling drum body 100, the water pipe fixing plate 310 can play a role in stabilizing support.

[0053] To facilitate the installation of the inlet pipe 305, a pipe connector 308 and a pipe support 309 are provided on the inner wall of the return pipe 304. The pipe connector 308 is welded and fixed to the outlet end of the inlet pipe 305 and separates the inlet hole 304a and the outlet hole 304b. The pipe support 309 is welded and fixed to the inlet end of the inlet pipe 304 and connected to a rotary joint. This rotary joint is the HS-G series rotary joint of Tengxuan Technology, used to separate the inlet and outlet water. The pipe connector 308 is provided with a through hole for the inlet pipe 305 to pass through and its outer wall is in contact with the return pipe 304. The pipe support 309 is provided with a through hole 309a for the inlet pipe 305 to pass through and is connected to the return pipe 304 through multiple legs 309b. A return port is formed between adjacent legs 309b.

[0054] The working principle of this invention is as follows:

[0055] Cooling water discharged from the return port of the heat exchanger enters the inlet pipe 305 through the inlet channel of the rotary joint, and then enters the four inlet branch pipes 306 extending axially to both ends of the cooling drum body 100 through the inlet hole 304a. Then, it enters the corresponding spiral flow channel 101 through the corresponding water passage 500 and the spiral flow channel inlet 102. The cooling water enters from both ends of the cooling drum body 100 to cool the surface of the cooling drum. The water reaching the spiral flow channel outlet 103 enters the outlet branch pipe 307 through the water passage 500, and then enters the return water channel through the outlet hole 304b. It then enters the return water channel of the rotary joint through the return water port on the water pipe support 309, and finally connects to the inlet of the heat exchanger through the return water channel.

[0056] In summary, this cooling drum device can improve the uniformity of drum surface temperature, thereby improving the heat dissipation efficiency of the thin film during the coating process, and thus increasing production efficiency and capacity.

[0057] The above examples are merely illustrative of the technical concept and features of the present invention, intended to enable those skilled in the art to understand the content of the invention and implement it accordingly, and should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A cold drum device for a coating apparatus, characterized by, include: The cooling drum body has 4n spiral flow channels machined on its outer wall, and the flow directions of adjacent spiral flow channels are opposite. A cooling drum jacket is fixed to the outer periphery of the cooling drum body to separate the 4n spiral flow channels; The water inlet and outlet assembly, installed on the cooling drum body, includes an intermediate shaft, a return water pipe installed at one end of the intermediate shaft, and an inlet water pipe coaxially installed inside the return water pipe. A return water flow channel is formed between the inlet water pipe and the return water pipe. The outer wall of the return water pipe has 4n inlet holes at the outlet end of the inlet water pipe. The 4n inlet holes are divided into two groups and connected to the spiral flow channel inlets at both ends of the cooling drum body via inlet branch pipes. The outer wall of the return water pipe has 4n outlet holes at the inlet end of the return water flow channel. The 4n outlet holes are divided into two groups and connected to the spiral flow channel outlets at both ends of the cooling drum body via outlet branch pipes, where n is a natural number ≥ 1.

2. The cold drum device for a coating apparatus according to claim 1, wherein: The cooling drum body has end panels fixed at both ends along its axial direction. The end panels have 4n water-passing components evenly arranged along the circumference. The water-passing components are used to connect the water inlet branch pipe to the water inlet of the spiral flow channel, or to connect the water outlet branch pipe to the water outlet of the spiral flow channel.

3. The cold drum device for a coating apparatus according to claim 2, wherein: The water-passing component includes a water-passing component body and a water-passing component end cap fixed on the water-passing component body. One end of the water-passing component body is connected to the water inlet branch pipe / water outlet branch pipe, and the other end of the water-passing component body is connected to the spiral flow channel inlet / spiral flow channel outlet.

4. The cold drum device for a coating apparatus according to claim 3, wherein: The inlet / outlet branch pipe is supported on the end panel and extends to the water passage body. A sealing ring is provided between the water passage body and the spiral flow channel inlet / spiral flow channel outlet.

5. The cooling drum device for a roll-to-roll coating equipment according to claim 2, characterized in that: The cooling drum body has end caps at both axial ends, and the end caps are fixed to the outside of the water-passing component.

6. The cold drum device for a coating apparatus according to claim 5, wherein: The intermediate shaft includes a shaft body, a plug fixed to one end of the shaft body near the return water pipe, and a shaft head fixed to one end of the shaft body away from the return water pipe. The shaft head is supported on the end panel and end cover and extends to the axial outer side of the cooling drum body. The return water pipe is supported on the end panel and end cover and is fixedly connected to the plug.

7. The cold drum apparatus for a coating apparatus according to claim 6, wherein: The outer wall of the shaft is provided with a water pipe fixing plate to support the inlet or outlet branch pipes that are far away from the return water pipe.

8. The cold drum apparatus for a coating apparatus according to claim 1, wherein: The inner wall of the return water pipe is provided with a water pipe connector and a water pipe support. The water pipe connector is fixedly connected to the outlet end of the inlet water pipe and separates the inlet and outlet water holes. The water pipe support is fixedly connected to the inlet end of the inlet water pipe and connects to a rotary joint that divides the inlet and outlet water.

9. The cold drum apparatus for a coating apparatus according to claim 1, wherein: The cooling drum body is made of aluminum alloy.

10. The cold drum apparatus for a coating apparatus according to claim 1, wherein: The outer surface of the cooling drum jacket is provided with a ceramic insulating layer, and the roughness of the ceramic insulating layer is below Ra0.1.

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