Efficient heat exchange winding coating cold roller
The use of aluminum alloy rolls with straight-line coolant channels addresses the inefficiencies in existing steel roll-cooling systems, enhancing thermal conductivity and precision control, resulting in improved heat exchange and reduced substrate deformation in vacuum evaporation deposition processes.
Patent Information
- Application Number
- CN202421651222.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The cooling efficiency of existing winding coated cold rollers is low, resulting in wrinkles or carbonization of flexible film substrates, affecting product yield, and the thermal conductivity of steel cold rollers is low, making it difficult to control operating accuracy.
A linear deep-hole waterway design is made of aluminum alloy material, combined with an aluminum alloy jacket and mandrel, a reasonable cooling waterway structure is designed to improve heat exchange efficiency, and the high thermal conductivity of aluminum alloy reduces the difficulty of operating accuracy control.
The heat exchange capacity between the roller surface and the base film during coating is improved, the difficulty of operating accuracy control is reduced, and the stability of the coating process and product quality are ensured.
Smart Images
Figure CN223103065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coating equipment, in particular to an efficient heat exchange winding coating cold roll. Background Technique
[0002] The working principle of a vacuum evaporation coating equipment is a vacuum coating method in which, under vacuum conditions, an evaporator is used to heat and evaporate a coating material to make it sublimate, and the evaporated particle flow directly shoots towards a substrate and deposits on the substrate to form a solid thin film. In a winding evaporation coating equipment with a flexible film as the substrate, if the cold quantity provided by the cold roll is insufficient, the flexible film substrate will wrinkle or even carbonize, thus affecting the product yield rate. Especially in products with high film thickness requirements, such as the evaporation coating of composite current collectors, the base film is extremely thin, the required metal coating is very thick, and the heat is very high. It is urgent to solve the heat dissipation problem of the cold roll for the base film.
[0003] The currently widely used winding coating cold rolls are all made of steel, and the cooling water channels on their surfaces are spiral. This structure causes the residence time of the coolant in the surface cooling water channels to be too long, the heat exchange efficiency is low, and there is a temperature difference on the roll surface; at the same time, when it rotates at high speed, the spiral water channels have different effects on the coolant flow state change and flow resistance in the forward and reverse directions, and its high-density, high-quality, and high-inertia material greatly improves the difficulty of controlling its operation accuracy.
[0004] Here, the thermal conductivity of the steel material is much lower than that of copper and aluminum. The thermal conductivity of aluminum is about four times that of it, the thermal conductivity of copper is about five times that of it, and the thermal conductivity of aluminum alloy is also more than twice that of it. The utility model uses an aluminum alloy material with linear deep-hole water channels. The coolant travel is shorter, the heat exchange efficiency is higher, and there is no difference in the coolant flow state and resistance in the forward and reverse rotations during dynamic high-speed rotation; the whole roll is welded and sealed after being integrally processed in two parts respectively, and then the outer dimensions are integrally processed, and the processing process is simple to ensure the accuracy; the whole body is made of aluminum alloy material, and its thermal conductivity is more than twice that of the traditional steel material, and the position of the deep-hole water channel can be closer to the roll surface, greatly improving the heat exchange ability between the roll surface and the base film during coating. At the same time, the high strength and low density greatly reduce the weight, and the difficulty of controlling its operation accuracy is greatly reduced. Content of the Utility Model
[0005] The purpose of the utility model is to solve the problems of poor effect and high accuracy control difficulty of the existing winding coating cold roll, and provide an efficient heat exchange winding coating cold roll. By using linear deep-hole water channels, it can not only greatly improve the heat exchange ability between the roll surface and the base film during coating, but also reduce the difficulty of controlling the operation accuracy.
[0006] To achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model discloses an efficient heat exchange winding coating cold roll, which comprises a jacket whose outer surface contacts with a film substrate and a mandrel for connecting with a driving mechanism. The jacket is sleeved on the mandrel, and the inner wall of the jacket is closely attached to and fixedly connected with the outer wall of the mandrel; a plurality of linear cooling water channels penetrating axially are arranged on the end face of the jacket; both ends of each cooling water channel are sealed. A plurality of water collecting grooves are arranged on the outer wall of the mandrel, and a water collecting cavity is formed between the water collecting grooves and the inner wall of the jacket; radial communication water channels communicating with the water collecting grooves are arranged on a plurality of cooling water channels. An inlet water channel, an outlet water channel and a plurality of water collecting channels are arranged inside the mandrel, one end of each water collecting channel is communicated with a water collecting groove, and the other end is communicated with the outlet water channel or the inlet water channel. External cooling water can enter from the inlet water channel and flow out from the outlet water channel; or it can enter from the outlet water channel and flow out from the inlet water channel.
[0008] In some preferred embodiments of the present utility model, the water collecting grooves are respectively arranged at both ends of the mandrel, and include a first water collecting groove far from the water inlet and a second water collecting groove close to the water inlet; the first water collecting groove and the second water collecting groove are respectively communicated with the inlet water channel and the outlet water channel through water collecting channels. The first water collecting groove and the second water collecting groove are one or more.
[0009] During use, when the cooling water enters from the inlet water channel, its water flow direction is: cooling water - inlet water channel - water collecting channel - first water collecting groove - communication water channel - cooling water channel, the coolant cools the jacket - communication water channel - first water collecting groove - water collecting channel - outlet water channel. The coolant flows from one end to the other end, and this structure is the simplest and easy to process.
[0010] Further, one first water collecting groove and one second water collecting groove are provided, the water collecting channels communicating with the first water collecting groove are located on the same cross section of the mandrel, and the water collecting channels communicating with the second water collecting groove are located on the same cross section of the mandrel. It is convenient for drilling the water collecting channels.
[0011] In some preferred embodiments of the present utility model, a plurality of auxiliary water channels both communicated with the outlet water channel are further arranged inside the mandrel. The water collecting grooves are respectively arranged at both ends of the mandrel, and include a first water collecting groove far from the water inlet and a second water collecting groove close to the water inlet; a first partition is formed by upward protrusion in the middle of the first water collecting groove, and the first water collecting groove is separated into a first left water collecting groove and a first right water collecting groove; a second partition is formed by upward protrusion in the middle of the second water collecting groove, and the second water collecting groove is separated into a second left water collecting groove and a second right water collecting groove; the upper end faces of the first partition and the second partition are closely attached to the inner wall of the jacket. The first left water collecting groove and the second right water collecting groove are both communicated with the auxiliary water channels, and the first right water collecting groove and the second left water collecting groove are both communicated with the inlet water channel. Both ends of the cooling water channel are respectively communicated with the first left water collecting groove and the second left water collecting groove through communication water channels, or respectively communicated with the first right water collecting groove and the second right water collecting groove.
[0012] During use, when the cooling water enters from the water inlet channel, the water flow direction of a part of the cooling water is as follows: cooling water - water inlet channel - collecting pipe - first right water collecting tank - connecting water channel - cooling water channel, the cooling liquid cools the outer sleeve - connecting water channel - second right water collecting tank - water collecting channel - auxiliary water channel - water outlet channel.
[0013] The water flow direction of the other part of the cooling water is: cooling water - water inlet channel - collecting pipe - second left water collecting tank - connecting water channel - cooling water channel, the cooling liquid cools the outer sleeve - connecting water channel - first left water collecting tank - water collecting channel - auxiliary water channel - water outlet channel.
[0014] In this structure, the flow directions of the cooling liquid in the two parts are opposite, which is suitable for a longer cold roll and can reduce the temperature difference at both ends.
[0015] Furthermore, both the first partition and the second partition are distributed in a wavy shape, so that the connecting water channels at the same end can be located on the same cross-section, which is convenient for processing.
[0016] In some preferred embodiments of the present utility model, a number of auxiliary water channels communicating with the water outlet channel are further provided inside the mandrel. The water collecting tanks are respectively arranged at both ends and in the middle of the mandrel, including a first water collecting tank far from the water inlet, a second water collecting tank close to the water inlet, and a third water collecting tank located in the middle. The first water collecting tank and the second water collecting tank are both communicated with the auxiliary water channel, and the third water collecting tank is communicated with the water inlet channel.
[0017] During use, when the cooling water enters from the water inlet channel, its water flow direction is: cooling water - water inlet channel - collecting pipe - third water collecting tank - connecting water channel - cooling water channel, the cooling liquid cools the outer sleeve - in two paths - connecting water channel - first water collecting tank and second water collecting tank - water collecting channel - auxiliary water channel - water outlet channel.
[0018] In this structure, the cooling liquid enters from the water inlet channel and then divides into two paths towards both ends, and finally flows out from the water outlet channel, and vice versa. The cooling liquid only flows through half of the distance in the cooling water channel, and can take away heat more quickly.
[0019] Furthermore, the outer sleeve and the mandrel are an aluminum alloy outer sleeve and an aluminum alloy mandrel. The aluminum alloy material has a thermal conductivity coefficient more than twice that of the traditional steel material, and is easier to dissipate heat. At the same time, the aluminum alloy also has the special effects of high strength and low density, and its mass is greatly reduced, which greatly reduces the difficulty of operation precision control.
[0020] In some preferred embodiments of the present utility model, a hollow tube extends along the axis from the center of one end of the mandrel, and the axis of the hollow tube is coaxial with the water inlet channel; a plug tube is connected inside the hollow tube, one end of the plug tube is sealingly connected to the water inlet channel, and the other end is a water inlet; the inner diameter of the hollow tube is larger than the outer diameter of the plug tube, and the gap between the hollow tube and the plug tube forms a water outlet channel, and the end forms a water outlet. The water inlet and outlet, and the water inlet and outlet channels are arranged in the middle of the mandrel to avoid interference and facilitate operation.
[0021] In some preferred embodiments of the present utility model, the plug tube is a stainless steel plug tube, and an O-ring seal is arranged at the connection between the plug tube and the water inlet channel.
[0022] In some preferred embodiments of the present utility model, the mandrel is symmetrically provided with a plurality of hole grooves for weight reduction at positions where there is no water channel.
[0023] The beneficial effects of the present utility model are as follows:
[0024] 1. The cooling water channel of the present utility model adopts a straight deep hole water channel, the coolant travel is shorter, the heat exchange efficiency is higher, and there is no difference in the flow state and resistance of the coolant in the forward and reverse rotations during dynamic high-speed rotation; and the position of the deep hole water channel can be closer to the roller surface, greatly improving the heat exchange capacity between the roller surface and the base film during coating.
[0025] 2. Made of aluminum alloy material, its thermal conductivity coefficient is more than twice that of traditional steel materials. At the same time, the high strength and low density greatly reduce the weight, and the difficulty of controlling its operation accuracy is greatly reduced. Description of the Drawings
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0027] Figure 1 It is a schematic cross-sectional view of Embodiment 1 and the water flow direction.
[0028] Figure 2 It is Figure 1 The cross-sectional view at A-A in
[0029] Figure 3 It is a schematic cross-sectional view of Embodiment 2 and the water flow direction.
[0030] Figure 4 It is Figure 3 The cross-sectional view at B-B in
[0031] Figure 5Yes Figure 3 The sectional view at C-C in
[0032] Figure 6 It is a schematic structural diagram of the first partition and the second partition in the second embodiment.
[0033] Figure 7 It is a schematic sectional view and the water flow direction in the third embodiment.
[0034] Figure 8 Yes Figure 7 The sectional view at D-D in
[0035] Figure 9 It is a schematic structural diagram of the third embodiment.
[0036] Figure 10 It is a schematic structural diagram of the mandrel in the third embodiment.
[0037] Figure 11 It is a schematic structural diagram of the outer sleeve in the third embodiment.
[0038] Description of main component symbols:
[0039] 1. Outer sleeve, 2. Mandrel, 3. Cooling water channel, 4. Connecting water channel, 5. Inlet water channel, 6. Outlet water channel, 7. Water collecting channel, 8. Hollow tube, 9. Insertion tube, 10. First water collecting tank, 101. First left water collecting tank, 102. First right water collecting tank, 11. Second water collecting tank, 111. Second left water collecting tank, 112. Second right water collecting tank, 12. Auxiliary water channel, 13. First partition, 14. Second partition, 15. Third water collecting tank. Specific embodiments
[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the specification. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0041] In the present utility model, unless otherwise stated, the orientation terms such as "upper, lower, left, and right" are generally understood in the orientation shown in combination with the accompanying drawings and actual applications.
[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0044] The endpoints and any values of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values should be understood to include values close to these ranges or values. For numerical ranges, the endpoint values of each range, the endpoint values of each range and the individual point values, and the individual point values can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article. Among them, the terms "optional" and "optional" all mean that they can be included or not (or can be included or not).
[0045] like Figures 1 to 11 As shown, the utility model discloses a high-efficiency heat exchange winding coating cold roller, which includes a jacket 1 whose outer surface contacts the film substrate and a core shaft 2 for connecting to a driving mechanism. The jacket 1 is sleeved on the core shaft 2, and the inner wall of the jacket 1 is tightly attached to and fixedly connected to the outer wall of the core shaft 2.
[0046] A plurality of linear cooling water channels 3 are provided on the end surface of the outer jacket 1 and penetrate the outer jacket 1 in the axial direction, so as to cool the surface of the outer jacket 1. Both ends of each cooling water channel 3 are sealed and blocked.
[0047] A plurality of water collecting grooves are arranged on the outer wall of the core shaft 2, and the water collecting grooves and the inner wall of the outer sleeve 1 form a water collecting cavity; and a plurality of cooling water channels 3 are all provided with radial connecting water channels 4 connecting with the water collecting grooves.
[0048] The core shaft 2 is provided with a water inlet 5, a water outlet 6 and a plurality of water collecting channels 7. One end of the water collecting channel 7 is connected to the water collecting trough, and the other end is connected to the water outlet 6 or the water inlet 5. External cooling water can enter from the water inlet 5 and exit from the water outlet 6; it can also enter from the water outlet 6 and exit from the water inlet 5, without the risk of wrong installation.
[0049] The cooling water channel 3 adopts a straight deep-hole water channel, with a shorter coolant travel, higher heat exchange efficiency, and no difference in the forward and reverse coolant flow states and the resistance during dynamic high-speed rotation; moreover, the deep-hole water channels are evenly distributed and can be closer to the roller surface, greatly improving the heat exchange capacity between the roller surface and the base film during coating. It can not only achieve a better cooling effect but also overcome the problems existing in the prior art.
[0050] In the design of the inlet and outlet water channels 6, the present utility model adopts: a hollow tube 8 extends along the axis from the center of one end of the mandrel 2, and the axis of the hollow tube 8 is coaxial with the inlet water channel 5. A plug tube 9 is connected inside the hollow tube 8. One end of the plug tube 9 is hermetically connected to the inlet water channel 5, and the other end is the water inlet. The inner diameter of the hollow tube 8 is larger than the outer diameter of the plug tube 9, and the gap between the hollow tube 8 and the plug tube 9 forms the outlet water channel 6, and the end forms the water outlet. The water inlet and outlet, and the inlet and outlet water channels 6 are arranged in the middle of the mandrel 2, which can avoid interference and facilitate operation. Moreover, the water inlet and outlet can be interchanged without the risk of misinstallation.
[0051] Among them, the plug tube 9 is a stainless steel plug tube, and an O-ring seal is arranged at the connection between the plug tube 9 and the inlet water channel 5. The mandrel 2 is symmetrically provided with a number of hole grooves for weight reduction at positions without water channels.
[0052] Preferably, the outer sleeve 1 and the mandrel 2 are an aluminum alloy outer sleeve 1 and an aluminum alloy mandrel 2. The aluminum alloy material has a thermal conductivity coefficient more than twice that of the traditional steel material, is easier to dissipate heat, and at the same time, the aluminum alloy also has the special effects of high strength and low density, its mass is greatly reduced, and the difficulty of operation precision control is greatly reduced.
[0053] Embodiment 1:
[0054] As Figure 1 、 Figure 2 shown, in this embodiment, the water collecting troughs are respectively arranged at both ends of the mandrel 2, including a first water collecting trough 10 far from the water inlet and a second water collecting trough 11 close to the water inlet. The first water collecting trough 10 and the second water collecting trough 11 are respectively communicated with the inlet water channel 5 and the outlet water channel 6 through the water collecting channels 7. The first water collecting trough 10 and the second water collecting trough 11 are one or more. In this embodiment, both the first water collecting trough 10 and the second water collecting trough 11 are provided with one.
[0055] For the convenience of drilling and processing of the water collecting channels 7, the water collecting channels 7 communicated with the first water collecting trough 10 are located on the same cross-section of the mandrel 2, and the water collecting channels 7 communicated with the second water collecting trough 11 are located on the same cross-section of the mandrel 2.
[0056] For this structure, the coolant enters from the inlet water channel 5, enters the cooling water channel 3, flows from one end of the cooling water channel 3 to the other end, and finally flows out from the outlet water channel 6; conversely, entering from the outlet water channel 6 and draining from the inlet water channel 5 is also feasible.
[0057] Specifically, when the cooling water enters from the water inlet channel 5, its water flow direction is: cooling water - water inlet channel 5 - water collecting channel 7 - first water collecting tank 10 - connecting water channel 4 - cooling water channel 3, the coolant cools the outer sleeve 1 - connecting water channel 4 - first water collecting tank 10 - water collecting channel 7 - water outlet channel 6.
[0058] Similarly, the cooling water can also enter from the water outlet channel 6 and be discharged from the water inlet channel 5.
[0059] The coolant of this embodiment flows from one end to the other end, with fewer openings, simple structure, easy to process, and at the same time, more holes and grooves can be opened to reduce the mass, greatly reducing the weight of the mandrel 2.
[0060] Embodiment 2:
[0061] As Figures 3 to 6 shown, in this embodiment, a number of auxiliary water channels 12 are also provided in the mandrel 2, all of which communicate with the water outlet channel 6. The water collecting tanks are respectively arranged at both ends of the mandrel 2, including a first water collecting tank 10 far from the water inlet and a second water collecting tank 11 close to the water inlet.
[0062] A first partition 13 is formed by upward protrusion in the middle of the first water collecting tank 10, separating the first water collecting tank 10 into a first left water collecting tank 101 and a first right water collecting tank 102. A second partition 14 is formed by upward protrusion in the middle of the second water collecting tank 11, separating the second water collecting tank 11 into a second left water collecting tank 111 and a second right water collecting tank 112. The upper end surfaces of the first partition 13 and the second partition 14 are in close contact with the inner wall of the outer sleeve 1. The first left water collecting tank 101, the first right water collecting tank 102, the first partition 13 and the inner wall of the outer sleeve 1 form two independent water collecting cavities, and the second left water collecting tank 111, the second right water collecting tank 112, the first partition 13 and the inner wall of the outer sleeve 1 form two independent water collecting cavities.
[0063] Among them, both the first partition 13 and the second partition 14 are distributed in a wavy shape. When the connecting water channels 4 at the same end are arranged on the same cross-section, half of the inlet and outlet positions of the connecting water channels 4 at the same end are located on the left side of the partition, and half are located on the right side of the partition, which can not only stagger the water inlet of the adjacent cooling water channels 3, but also facilitate the processing of the connecting water channels 4.
[0064] Among them, the first left water collecting tank 101 and the second left water collecting tank 111 are respectively connected to the auxiliary water channel 12 and the water inlet channel 5 through the water collecting channel 7. Both ends of the cooling water channel 3 are respectively connected to the first left water collecting tank 101 and the second left water collecting tank 111 through the connecting water channels 4. The auxiliary water channel 12 is connected to the water inlet channel 5 to form a first cooling circuit; the first right water collecting tank 102 and the second right water collecting tank 112 are respectively connected to the water inlet channel 5 and the auxiliary water channel 12 through the water collecting channel 7. The auxiliary water channel 12 is connected to the water outlet channel 6. Both ends of the cooling water channel 3 are respectively connected to the first right water collecting tank 102 and the second right water collecting tank 112 through the connecting water channels 4 to form a second cooling circuit; the water flow directions of the first cooling circuit and the second cooling circuit are opposite.
[0065] For this structure, the coolant enters from the water inlet channel 5. A part of it enters the cooling water channel flowing from left to right, and a part enters the cooling water channel flowing from right to left. Finally, it converges on the auxiliary water channel 12 and flows out from the water outlet channel 6. Conversely, water enters from the water outlet channel 6 and drains from the water inlet channel 5, which is also feasible.
[0066] Specifically, when the cooling water enters from the water inlet channel 5, a part of the cooling water flows from the left end to the right end: cooling water - water inlet channel 5 - water collecting channel 7 - first right water collecting tank 102 - connecting water channel 4 - cooling water channel 3, the coolant cools the outer sleeve 1 - connecting water channel 4 - second right water collecting tank 112 - water collecting channel 7 - auxiliary water channel 12 - water outlet channel 6.
[0067] Another part of the cooling water flows from the right end to the left end: cooling water - water inlet channel 5 - water collecting channel 7 - second left water collecting tank 111 - connecting water channel 4 - cooling water channel 3, the coolant cools the outer sleeve 1 - connecting water channel 4 - first left water collecting tank 101 - water collecting channel 7 - auxiliary water channel 12 - water outlet channel 6.
[0068] In this embodiment, the liquid flow directions of adjacent cooling water channels 3 are opposite, which can reduce the temperature difference at both ends and is applicable to long cold rollers.
[0069] Embodiment Three:
[0070] As Figures 7 to 11 shown, in this embodiment, several auxiliary water channels 12 are further provided inside the mandrel 2, and all of them are connected to the water outlet channel 6. The water collecting tanks are respectively arranged at both ends and in the middle of the mandrel 2, including the first water collecting tank 10 far from the water inlet, the second water collecting tank 11 close to the water inlet, and the third water collecting tank 15 in the middle. The first water collecting tank 10 and the second water collecting tank 11 are both connected to the auxiliary water channel 12, and the third water collecting tank 15 is connected to the water inlet channel 5.
[0071] The cooling liquid of this structure enters from the middle of the cooling water channel 3 through the water inlet channel 5, then divides into two streams towards both ends in the middle of the cooling water channel 3, and finally converges into the auxiliary water channel 12 and flows out from the water outlet channel 6. Conversely, it is also feasible to enter from the water outlet channel 6 and drain from the water inlet channel 5.
[0072] Specifically, when the cooling water enters from the water inlet channel 5, the direction of its cooling water flow is: cooling water - water inlet channel 5 - water collecting channel 7 - the third water collecting tank 15 - connecting water channel 4 - cooling water channel 3. The cooling water flows in two directions, left and right, to cool the outer sleeve 1.
[0073] The liquid flow on the left side flows through the connecting water channel 4 to the first water collecting tank 10, and the liquid flow on the right side flows through the connecting water channel 4 to the second water collecting tank 11. The first water collecting tank 10 and the second water collecting tank 11 collect the cooling liquid into the auxiliary water channel 12 through the water collecting channel 7 and flow out towards the water outlet channel 6.
[0074] In this embodiment, the cooling liquid only flows through half of the distance in the cooling water channel 3. With a short travel distance, the cooling effect is good, and it can take away heat more quickly.
[0075] In summary, the utility model adopts a straight deep-hole water channel, which can not only greatly improve the heat exchange capacity between the roller surface and the base film during coating, but also reduce the difficulty of operation precision control.
[0076] The preferred embodiments of the utility model have been described in detail above. However, the utility model is not limited thereto. Within the scope of the technical concept of the utility model, various simple modifications can be made to the technical solutions of the utility model, including any other suitable combination of each technical feature. These simple modifications and combinations should also be regarded as the content disclosed by the utility model and fall within the protection scope of the utility model.
Claims
1. An efficient heat exchange winding coating cold roll, characterized in that: It includes a jacket with an outer surface in contact with the film substrate and a mandrel for connecting to a driving mechanism; The jacket is sleeved on the mandrel, and the inner wall of the jacket is in close contact with and fixedly connected to the outer wall of the mandrel; several linear cooling water channels penetrating axially are provided on the end face of the jacket; both ends of each cooling water channel are sealed; Several water collecting grooves are provided on the outer wall of the mandrel, and a water collecting cavity is formed between the water collecting grooves and the inner wall of the jacket; radial connecting water channels communicating with the water collecting grooves are provided on several cooling water channels; An inlet water channel, an outlet water channel and several collecting water channels are arranged inside the mandrel, one end of the collecting water channel is communicated with the water collecting groove, and the other end is communicated with the outlet water channel or the inlet water channel; External cooling water enters from the inlet water channel and exits from the outlet water channel; or enters from the outlet water channel and exits from the inlet water channel.
2. The high-efficiency heat exchange winding coating cold roll according to claim 1, wherein: The water collecting grooves are respectively arranged at both ends of the mandrel, including a first water collecting groove far from the water inlet and a second water collecting groove close to the water inlet; the first water collecting groove and the second water collecting groove are respectively communicated with the inlet water channel and the outlet water channel through the collecting water channels; the first water collecting groove and the second water collecting groove are one or more.
3. The high-efficiency heat exchange winding coating cold roll according to claim 2, wherein: One first water collecting groove and one second water collecting groove are provided, and the collecting water channels communicating with the first water collecting groove are located on the same cross-section of the mandrel, and the collecting water channels communicating with the second water collecting groove are located on the same cross-section of the mandrel.
4. The high-efficiency heat exchange winding coating cold roll according to claim 1, wherein: Several auxiliary water channels all communicating with the outlet water channel are also arranged inside the mandrel; The water collecting grooves are respectively arranged at both ends of the mandrel, including a first water collecting groove far from the water inlet and a second water collecting groove close to the water inlet; a first partition is formed by upward protrusion in the middle of the first water collecting groove, and the first water collecting groove is separated into a first left water collecting groove and a first right water collecting groove; a second partition is formed by upward protrusion in the middle of the second water collecting groove, and the second water collecting groove is separated into a second left water collecting groove and a second right water collecting groove; the upper end faces of the first partition and the second partition are in close contact with the inner wall of the jacket; The first left water collecting groove and the second right water collecting groove are both communicated with the auxiliary water channel, and the first right water collecting groove and the second left water collecting groove are both communicated with the inlet water channel; Both ends of the cooling water channel are respectively communicated with the first left water collecting groove and the second left water collecting groove through the connecting water channel, or respectively communicated with the first right water collecting groove and the second right water collecting groove.
5. The high-efficiency heat exchange winding coating cold roll according to claim 4, wherein: Both the first partition and the second partition are distributed in a wavy shape; the connecting water channels at the same end are located on the same cross-section.
6. The high-efficiency heat exchange winding coating cold roll according to claim 1, wherein: Several auxiliary water channels all communicating with the outlet water channel are also arranged inside the mandrel; The water collecting grooves are respectively arranged at both ends and in the middle of the mandrel, including a first water collecting groove far from the water inlet, a second water collecting groove close to the water inlet and a third water collecting groove located in the middle; Both the first water collecting groove and the second water collecting groove are communicated with the auxiliary water channel, and the third water collecting groove is communicated with the inlet water channel.
7. The high-efficiency heat exchange winding coating cold roll according to any one of claims 1 to 6, characterized in that: The jacket and the mandrel are an aluminum alloy jacket and an aluminum alloy mandrel.
8. The high-efficiency heat exchange winding coating cold roll according to any one of claims 1 to 7, characterized in that: A hollow tube extends axially along the center of one end of the mandrel, and the axis of the hollow tube is coaxial with the inlet water channel; a plug tube is connected inside the hollow tube, one end of the plug tube is hermetically connected to the inlet water channel, and the other end is the water inlet; the inner diameter of the hollow tube is larger than the outer diameter of the plug tube, and a gap between the hollow tube and the plug tube forms the outlet water channel, and the end forms the water outlet.
9. The high-efficiency heat exchange winding coating cold roll according to claim 8, characterized in that: The plug tube is a stainless steel plug tube, and an O-ring seal is arranged at the connection between the plug tube and the inlet water channel.
10. The high-efficiency heat exchange winding coating cold roll according to any one of claims 1 to 7, characterized in that: The mandrel is symmetrically provided with a plurality of hole grooves for weight reduction at positions where no water channels are provided.