Multifunctional coating device and method

Abstract

The present invention discloses a multifunctional coating device, comprising: an unwinding module; a first coating module, located behind the unwinding module, comprising a first coating unit and a second coating unit with different coating materials; a diaphragm enters the first coating unit and the second coating unit in sequence from the unwinding module; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm; an oven, located between the first coating module and the second coating module; a second coating module, comprising a third coating unit and a fourth coating unit with different coating materials; the diaphragm enters the third coating unit and the fourth coating unit in sequence from the oven to be coated; wherein the third coating unit and the fourth coating unit are kept to coat the diaphragm at most by one coating unit; and a winding unit. A set of equipment of the present application can realize a variety of coating methods, with high equipment utilization and high coating efficiency, which promotes the further development of diaphragm coating.

Description

Technical Field

[0001] The present invention relates to the field of coating technology, and in particular to a multifunctional coating device and method. Background Art

[0002] The existing diaphragm coating machines in the lithium battery industry can be divided into ceramic, PVDF, PMMA, etc. according to the coating products, and can be divided into single-sided coating and double-sided coating according to the substrate coating surface; most of the diaphragm equipment on the market currently is single-sided coating at one time and double-sided coating in succession. For each type of coating method, a corresponding coating device needs to be designed. Diaphragm manufacturers currently solve the problem of different market demands for diaphragms by introducing multiple devices. However, this increases the investment cost of diaphragm manufacturers and reduces the utilization rate of equipment, which is not conducive to the further development of diaphragm coating. Summary of the invention

[0003] The present invention aims to solve at least one of the problems in the related art to a certain extent. To this end, the purpose of the present invention is to provide a multifunctional coating device and method, which can realize multiple coating methods with a set of equipment in the present application, with high equipment utilization rate and high coating efficiency, and promote the further development of diaphragm coating.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution: a multifunctional coating device, comprising:

[0005] An unwinding module, used for unwinding the diaphragm;

[0006] The first coating module is located behind the unwinding module, and includes a first coating unit and a second coating unit for coating different raw materials; the diaphragm enters the first coating unit and the second coating unit in sequence from the unwinding module; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm;

[0007] An oven is located between the first coating module and the second coating module;

[0008] The second coating module includes a third coating unit and a fourth coating unit with different coating materials; the diaphragm enters the third coating unit and the fourth coating unit in sequence from the oven for coating; wherein, the third coating unit and the fourth coating unit maintain at most one coating unit to coat the diaphragm;

[0009] The winding unit is used to wind up the dried diaphragm.

[0010] Furthermore, it also includes a turning module, which is located between the oven and the second coating module; the dried diaphragm is turned over by the turning module and then enters the second coating module.

[0011] Furthermore, the turnover module includes a turnover frame, a first arc roller, a first air flotation roller, a transition roller, a second arc roller, a second air flotation roller and an air flotation control unit;

[0012] The turning frame is a rectangular frame, the first arc roller is horizontally fixed below the front of the turning frame, and the first air floating roller is tilted and fixed above the first arc roller; the transition roller is located on the side of the turning frame, the second arc roller is horizontally fixed above the back of the turning frame, and the second air floating roller is tilted and fixed below the second arc roller; wherein the angle between the first air floating roller and the second air floating roller is 90°; the air floating control unit is connected to the first air floating roller and the second air floating roller at the same time;

[0013] The diaphragm is input from below the first arc roller, bypasses the first air floatation roller, the transition roller and the second air floatation roller, and is output from above the second arc roller; wherein the winding directions of the diaphragm on the first air floatation roller and the second air floatation roller are opposite.

[0014] Furthermore, a correction unit is provided between the flipping frame and the second air flotation roller, and the correction unit includes a correction probe, a correction frame and a correction execution component. The correction frame is located behind the flipping frame, the second air flotation roller and the second arc roller are fixed in the correction frame, and the correction probe is located on the side of the second arc roller; the correction execution component drives the correction frame to move in a direction parallel to the second arc roller.

[0015] Furthermore, the first coating module and the second coating module have the same structure; the first coating unit and the third coating unit have the same structure, and the second coating unit and the fourth coating unit have the same structure.

[0016] Further, the first coating unit is a first PVDF coating unit or a first PMMA coating unit, and the second coating unit is a second ceramic coating unit;

[0017] The third coating unit is a third PVDF coating unit or a third PMMA coating unit, and the fourth coating unit is a fourth ceramic coating unit.

[0018] Furthermore, the second ceramic coating unit includes a ceramic material box, a ceramic coating roller and an approach roller, the ceramic coating roller is located in the ceramic material box, and a diaphragm channel is formed between the ceramic coating roller and the approach roller.

[0019] Further, the first PMMA coating unit comprises a PMMA material box, a liquid-carrying roller, a transfer roller, a PMMA coating back roller and a PMMA coating roller, wherein a diaphragm channel is formed between the PMMA coating back roller and the PMMA coating roller, and the coating in the PMMA material box is transferred to the PMMA coating roller through the liquid-carrying roller and the transfer roller in sequence;

[0020] The first PVDF coating unit includes a PVDF material box, a liquid roller, a transfer roller, a PVDF coating back roller and a PVDF coating roller, wherein a diaphragm channel is formed between the PVDF coating back roller and the PVDF coating roller, and the coating in the PVDF material box is transferred to the PVDF coating roller through the liquid roller and the transfer roller in sequence.

[0021] Furthermore, the first coating module also includes a transition roller, an approach roller and a climbing roller, wherein the first coating unit is arranged near the transition roller, and the second coating unit is arranged near the approach roller; the diaphragm is connected to the first coating unit through the transition roller, the diaphragm after passing through the first coating unit is connected to the second coating unit, and the diaphragm after passing through the second coating unit is output through the approach roller and the climbing roller; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm.

[0022] A method for coating using a multifunctional coating device comprises the following steps:

[0023] S01: Unwinding module is used to load the diaphragm;

[0024] S02: The diaphragm enters the first coating unit and the second coating unit in the first coating module from the unwinding module; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm;

[0025] S03: drying the coated diaphragm in an oven;

[0026] S04: Determine whether the dried diaphragm needs to be turned over. If it needs to be turned over, the diaphragm is turned over by the turning module and the process goes to step S05. If it does not need to be turned over, the process goes directly to step S05.

[0027] S05: Determine whether the diaphragm needs to enter the second coating module for coating. If it needs to enter the second coating module, enter the third coating unit and the fourth coating unit in the second coating module, wherein only one of the third coating unit and the fourth coating unit is kept to coat the diaphragm; the oven is used to dry the coated diaphragm, and enter step S06; if it does not need to enter the second coating module, directly enter step S06;

[0028] S06: The winding unit is used to wind up the dried diaphragm.

[0029] The above technical solution provided by the embodiment of the present application has the following advantages over the prior art: the first coating module of the present application is provided with two parallel coating units, and the first coating unit and the second coating unit correspond to different coating raw materials, and one of the coating units can be selected to work according to demand. When one of the coating units is selected for coating, the other coating unit only exists as a component of the transmission diaphragm, and no coating work is required; the second coating module of the present application is also provided with two parallel coating units, and the third coating unit and the fourth coating unit correspond to different coating raw materials, and one of the coating units can be selected to work according to demand. When one of the coating units is selected for coating, the other coating unit only exists as a component of the transmission diaphragm, and no coating work is required; when both coating units do not need to be coated, both can be used as transmission components. The multifunctional coating equipment provided by the present application can realize the synchronization of different raw materials on the diaphragm, and can realize one or two coatings of the diaphragm, with high equipment utilization and high coating efficiency, which promotes the further development of diaphragm coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] In the attached figure:

[0033] Figure 1 This is a schematic diagram of the structure of the multifunctional coating device in Example 4 of the present application;

[0034] Figure 2 This is a schematic diagram of the structure of the first coating module in this application;

[0035] Figure 3 This is a schematic diagram of the structure of the flip module of this application;

[0036] Figure numbers: 11, PMMA material box; 12, liquid roller; 13, transfer roller; 14, PMMA coating roller; 15, PMMA coating back roller; 16, pressure roller; 21, ceramic material box; 22, ceramic coating roller; 23, approach roller; 31, first traction roller; 32, second traction roller; 33, third traction roller; 34, climbing roller; 35, output roller; 41, first arc roller; 42, first air flotation roller; 43, transition roller; 44, second air flotation roller; 45, second arc roller; 46, turning frame; 47, air flotation control unit; 48, correction probe; 49, correction frame; 50 correction execution component. DETAILED DESCRIPTION

[0037] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the mechanism or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0038] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0039] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0040] Please see attached Figure 1-3 , the present application provides a multifunctional coating device, comprising:

[0041] An unwinding module, used for unwinding the diaphragm;

[0042] The first coating module is located behind the unwinding module, and includes a first coating unit and a second coating unit for coating different raw materials; the diaphragm enters the first coating unit and the second coating unit in sequence from the unwinding module; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm;

[0043] An oven is located between the first coating module and the second coating module;

[0044] The second coating module includes a third coating unit and a fourth coating unit with different coating materials; the diaphragm enters the third coating unit and the fourth coating unit in sequence from the oven for coating; wherein, the third coating unit and the fourth coating unit maintain at most one coating unit to coat the diaphragm;

[0045] The winding unit is used to wind up the dried diaphragm.

[0046] The first coating module of the present application is provided with two parallel coating units, and the coating raw materials corresponding to the first coating unit and the second coating unit are different, and one of the coating units can be selected to work according to demand. When one of the coating units is selected for coating, the other coating unit only exists as a component of the transmission diaphragm, and no coating work is required; the second coating module of the present application is also provided with two parallel coating units, and the coating raw materials corresponding to the third coating unit and the fourth coating unit are different, and one of the coating units can be selected to work according to demand. When one of the coating units is selected for coating, the other coating unit only exists as a component of the transmission diaphragm, and no coating work is required; when both coating units do not need to be coated, both can be used as transmission components. The multifunctional coating equipment provided by the present application can realize the synchronization of different raw materials on the diaphragm, and can realize one or two coatings of the diaphragm, with high equipment utilization and high coating efficiency, which promotes the further development of diaphragm coating.

[0047] In practical applications, the coating equipment of the present application is also provided with a traction module, a correction module, etc. for traction and correction of the diaphragms between the modules. The complete structure of the coating equipment of the present application includes: unwinding module-traction module-first coating module-traction module-oven-correction module-traction module-second coating module-traction module-oven-correction module-traction module-winding module, wherein the structures of the traction modules may be the same or different, and any traction structure in the prior art may be adopted, and this application will not be described in detail later. The structures of the correction modules may be the same or different, and any correction structure in the prior art may be adopted, and this application will not be described in detail later. In the present application, the two ovens are preferably the same, and the diaphragms output by the first coating module and the second coating module are pulled into the same oven through the traction module.

[0048] If coating is carried out simultaneously in the first coating module and the second coating module in the present application, the coated surfaces are respectively the two side surfaces of the diaphragm. By setting a traction module between the first coating module and the second coating module, it is ensured that the diaphragm output by the first coating module passes through the oven, the correction module and the traction module and then enters the second coating module for coating on the other side.

[0049] In order to further improve the application scope of the coating equipment, the present application can also set a flip module before the second coating module. After drying, the diaphragm is flipped by the flip module and then enters the second coating module for coating on the same side.

[0050] Please see attached Figure 3 , Figure 3 The direction of the arrow in the middle represents the input and output direction of the diaphragm. In the present application, the flip module includes a flip frame 46, a first arc roller 41, a first air flotation roller 42, a transition roller 43, a second arc roller 45, a second air flotation roller 44 and an air flotation control unit 47; the flip frame is a rectangular frame, the first arc roller 41 is horizontally fixed below the front of the flip frame 46, and the first air flotation roller 42 is obliquely fixed above the first arc roller 41; the transition roller 43 is located on the side of the flip frame 46, the second arc roller 45 is horizontally fixed above the back of the flip frame 46, and the second air flotation roller 44 is obliquely fixed below the second arc roller 45; wherein the angle between the first air flotation roller 42 and the second air flotation roller 44 is 90°; the air flotation control unit 47 is connected to the first air flotation roller 42 and the second air flotation roller 44 at the same time. The air flotation control unit 47 is used to transport gas to the first air flotation roller 42 and the second air flotation roller 44, and the surfaces of the first air flotation roller 42 and the second air flotation roller 44 are evenly provided with a plurality of air holes, and the gas is sprayed onto the diaphragm through the air holes to ensure that the diaphragm does not contact the first air flotation roller 42 and the second air flotation roller 44, but is suspended on the first air flotation roller 42 and the second air flotation roller 44, ensuring that the diaphragm is transmitted smoothly and without damage.

[0051] In the present application, the first arc roller 41 and the second arc roller 45 are horizontal round rollers, the transition roller 43 is a vertical round roller, which may be one or more, the first air-floating roller 42 and the second air-floating roller 44 are inclined round rollers, and the two are inclined in different directions, with an angle of 90°. The diaphragm is input from the bottom of the first arc roller 41, bypasses the first air-floating roller 42, the transition roller 43 and the second air-floating roller 44, and is output from the top of the second arc roller 45; wherein the winding directions of the diaphragm on the first air-floating roller 42 and the second air-floating roller 44 are opposite, and the diaphragm is flipped when passing through the second air-floating roller 44, so that the two sides of the diaphragm are flipped after passing through the flip module.

[0052] Furthermore, a correction unit is provided between the flipping frame and the second air flotation roller 44, and the correction unit includes a correction probe 48, a correction frame 49 and a correction execution component 50. The correction frame 49 is located at the rear of the flipping frame, the second air flotation roller 44 and the second arc roller 45 are fixed in the correction frame 49, and the correction probe 48 is located on the side of the second arc roller 45; the correction execution component 50 drives the correction frame 49 to move in a direction parallel to the second arc roller 45.

[0053] The correction probe 48 is set at the diaphragm output position. By monitoring the diaphragm output position, it is determined whether the diaphragm is output in the center. If the diaphragm is offset, the correction actuator 50 drives the correction frame 49 to move, so that the diaphragm moves to the middle position of the second arc roller 45 for output.

[0054] In this application, whether the flip module needs to be connected to the coating device depends on the coating requirements of the diaphragm. When both sides of the same side of the diaphragm need to be coated, the flip module can be connected to the coating device. When both sides of the diaphragm need to be coated separately, there is no need to connect the flip module to the coating device.

[0055] As a specific embodiment, the raw materials of the two coating units in the same coating module in the present application are different, and one of the coating units can be selected for coating according to needs; the raw materials of the four coating units in the two coating modules in the present application can be the same or different, and can be specifically set according to coating requirements.

[0056] As a specific embodiment, the present application sets the first coating module and the second coating module to have the same structure, the first coating unit and the third coating unit to have the same structure, and the second coating unit and the fourth coating unit to have the same structure. For example, the first coating unit can be set to be a first PVDF coating unit or a first PMMA coating unit, the second coating unit can be set to be a second ceramic coating unit; the third coating unit can be set to be a third PVDF coating unit or a third PMMA coating unit, and the fourth coating unit can be set to be a fourth ceramic coating unit.

[0057] Please participate in the attached Figure 2 , Figure 2The arrow direction indicates the input and output direction of the diaphragm. In the present application, the second ceramic coating unit includes a ceramic material box 21, a ceramic coating roller 22 and an approach roller 23, wherein the ceramic coating roller 22 is located in the ceramic material box 21, and a diaphragm channel is formed between the ceramic coating roller 22 and the approach roller 23. The second ceramic coating unit and the fourth ceramic coating unit have the same structure.

[0058] The first PMMA coating unit includes a PMMA material box 11, a liquid roller 12, a transfer roller 13, a PMMA coating back roller 15, a PMMA coating roller 14 and a pressure roller 16, wherein a diaphragm channel is formed between the PMMA coating back roller 15 and the PMMA coating roller 14, the pressure roller 16 is located on the side of the PMMA coating roller 14, and a diaphragm output channel is formed between the pressure roller 16 and the PMMA coating roller 14; the coating in the PMMA material box 11 is transferred to the PMMA coating roller 14 through the liquid roller 12 and the transfer roller 13 in sequence.

[0059] The structure of the first PVDF coating unit is the same as that of the first PMMA coating unit, and the only difference is that the raw materials in the material box are different, namely, it includes a PVDF material box, a liquid roller 12, a transfer roller 13, a PVDF coating back roller and a PVDF coating roller, wherein a diaphragm channel is formed between the PVDF coating back roller and the PVDF coating roller, and the coating in the PVDF material box is transferred to the PVDF coating roller through the liquid roller 12 and the transfer roller 13 in sequence.

[0060] In order to orderly integrate the first coating unit and the second coating unit into the same coating module, the first coating module also includes a first traction roller 31, a second traction roller 32, a third traction roller 33, a climbing roller 34 and an output roller 35, wherein the first coating unit is arranged near the first traction roller 31, and the second coating unit is arranged near the climbing roller 34.

[0061] The diaphragm is connected to the first coating unit through the transition roller 43, and the diaphragm after passing the first coating unit is connected to the second coating unit. The diaphragm after passing the second coating unit passes through the climbing roller 34 and the output roller 35 and is output; wherein, only one of the first coating unit and the second coating unit is kept to coat the diaphragm; during the diaphragm output process, the coating unit that does not need to coat the diaphragm only exists as a traction device. Since the diaphragm is only coated once in the first coating module, for example, the attached Figure 2 When the diaphragm is coated only in the second ceramic coating unit, the diaphragm can be output through the first PMMA coating unit and the second ceramic coating unit at the same time. At this time, the diaphragm enters the first PMMA coating unit through the first traction roller 31, then enters the second ceramic coating unit through the third traction roller 33, and then is output through the climbing roller 34 and the output roller 35.

[0062] As another embodiment, the diaphragm can bypass the coating unit that does not need to be coated, and directly connect from the first traction roller 31 to the first coating unit or the second coating unit that needs to be coated for coating, and then output. Figure 2 In the process, when the diaphragm is coated only in the second ceramic coating unit, the diaphragm can also skip the first PMMA coating unit and only be output through the second ceramic coating unit; at this time, the diaphragm passes through the first traction roller 31 and the second traction roller 32 to enter the second ceramic coating unit, and then passes through the climbing roller 34 and the output roller 35 for output.

[0063] As another embodiment, during the diaphragm output process, the present application provides a coating method comprising the following steps:

[0064] S01: Unwinding module is used to load the diaphragm;

[0065] S02: The diaphragm enters the first coating unit and the second coating unit in the first coating module from the unwinding module; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm;

[0066] S03: drying the coated diaphragm in an oven;

[0067] S04: Determine whether the dried diaphragm needs to be turned over. If it needs to be turned over, the diaphragm is turned over by the turning module and the process goes to step S05. If it does not need to be turned over, the process goes directly to step S05.

[0068] S05: Determine whether the diaphragm needs to enter the second coating module for coating. If it needs to enter the second coating module, enter the third coating unit and the fourth coating unit in the second coating module, wherein only one of the third coating unit and the fourth coating unit is kept to coat the diaphragm; the oven is used to dry the coated diaphragm, and enter step S06; if it does not need to enter the second coating module, directly enter step S06;

[0069] S06: The winding unit is used to wind up the dried diaphragm.

[0070] The following real-time example takes the first coating unit and the third coating unit as the first PVDF coating unit and the third PVDF coating unit, respectively, and the second coating unit and the fourth coating unit as the second ceramic coating unit and the fourth ceramic coating unit, respectively, as an example to illustrate the coating method:

[0071] Example 1

[0072] When the diaphragm needs to be coated on both sides successively and both sides are coated with ceramic coating, the running trajectory of the diaphragm is as follows: unwinding module-traction module-first coating module-traction module-oven-correcting module-traction module-second coating module-traction module-oven-correcting module-traction module-winding module; wherein, in the first coating module, the second ceramic coating unit performs coating, the first PVDF coating unit only serves as a traction module or is directly bypassed, in the second coating module, the fourth ceramic coating unit performs coating, and the third PVDF coating unit only serves as a traction module or is directly bypassed.

[0073] Example 2

[0074] When the diaphragm needs to be coated on both sides successively and both sides are coated with PVDF, the running trajectory of the diaphragm is as follows: unwinding module-traction module-first coating module-traction module-oven-correcting module-traction module-second coating module-traction module-oven-correcting module-traction module-winding module; wherein, in the first coating module, the first PVDF coating unit performs coating, and the second ceramic coating unit only serves as a traction module or is directly bypassed, and in the second coating module, the third PVDF coating unit performs coating, and the fourth ceramic coating unit only serves as a traction module or is directly bypassed.

[0075] Example 3

[0076] When the diaphragm needs to be coated on both sides successively, and the coating on both sides is PVDF coating and ceramic coating respectively, the operation trajectory of the diaphragm is as follows: unwinding module-traction module-first coating module-traction module-oven-correcting module-traction module-second coating module-traction module-oven-correcting module-traction module-winding module; wherein, in the first coating module, the second ceramic coating unit performs coating, the first PVDF coating unit only serves as a traction module or is directly bypassed, in the second coating module, the third PVDF coating unit performs coating, and the fourth ceramic coating unit only serves as a traction module or is directly bypassed.

[0077] Alternatively, the first PVD coating unit in the first coating module performs coating, the second ceramic coating unit only serves as a traction module or is directly bypassed, the fourth ceramic coating unit in the second coating module performs coating, and the third PVDF coating unit only serves as a traction module or is directly bypassed.

[0078] Example 4

[0079] When the diaphragm needs to be coated on one side successively, and the coating on the same side is PVDF coating and ceramic coating in sequence, the running trajectory of the diaphragm is as follows: unwinding module-traction module-first coating module-traction module-oven-correcting module-traction module-flipping module-second coating module-traction module-oven-correcting module-traction module-winding module; wherein, in the first coating module, the first PVDF coating unit performs coating, and the second ceramic coating unit only serves as a traction module or is directly bypassed; then the diaphragm passes through the flipping module to ensure that the coated side can continue to be coated in the second coating module; in the second coating module, the fourth ceramic coating unit performs coating, and the third PVDF coating unit only serves as a traction module or is directly bypassed.

[0080] Example 5

[0081] When the diaphragm requires a single-sided ceramic coating, the present application may also set up two unwinding modules and two winding modules, and one coating trajectory is: unwinding module A-traction module A-first coating module-traction module A-oven-correction module A-traction module A-winding module A; wherein, the second ceramic coating unit in the first coating module performs coating, and the first PVDF coating unit is only used as a traction module or is directly bypassed.

[0082] Another coating trajectory is: unwinding module B-traction module B-second coating module-traction module B-oven-correction module B-traction module B-winding module B; wherein, the fourth ceramic coating unit in the second coating module performs coating, and the third PVDF coating unit is only used as a traction module or is directly bypassed.

[0083] In this embodiment, the two coating modules and their corresponding traction modules can form two production lines, realize double-station single-side diaphragm coating, improve equipment utilization, and improve coating efficiency.

[0084] Example 6

[0085] When the diaphragm requires a single-sided PVDF coating, the present application can also set up two unwinding modules and two winding modules, and one coating trajectory is: unwinding module A-traction module A-first coating module-traction module A-oven-correction module A-traction module A-winding module A; in the first coating module, the first PVDF cloth unit is coated, and the second ceramic coating unit is only used as a traction module or is directly bypassed.

[0086] Another coating trajectory is: unwinding module B-traction module B-second coating module-traction module B-oven-correction module B-traction module B-winding module B; wherein, the third PVDF coating unit in the second coating module performs coating, and the fourth ceramic coating unit only serves as a traction module or is directly bypassed.

[0087] In this embodiment, the two coating modules and their corresponding traction modules can form two production lines, realize double-station single-side diaphragm coating, improve equipment utilization, and improve coating efficiency.

[0088] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A multifunctional coating device, characterized in that: include: An unwinding module, used for unwinding the diaphragm; The first coating module is located behind the unwinding module and includes a first coating unit and a second coating unit with different coating materials; the diaphragm enters the first coating unit and the second coating unit in sequence from the unwinding module; wherein the first coating unit and The second coating unit only keeps one of them to coat the diaphragm; An oven is located between the first coating module and the second coating module; The second coating module includes a third coating unit and a fourth coating unit with different coating materials; the diaphragm enters the third coating unit and the fourth coating unit in sequence from the oven for coating; wherein, the third coating unit and the fourth coating unit maintain at most one coating unit to coat the diaphragm; A winding unit, used for winding the dried diaphragm; A turning module, the turning module is located between the oven and the second coating module; the dried diaphragm is turned over by the turning module and then enters the second coating module; The turnover module includes a turnover frame, a first arc roller, a first air flotation roller, a transition roller, a second arc roller, a second air flotation roller and an air flotation control unit; The turning frame is a rectangular frame, the first arc roller is horizontally fixed below the front of the turning frame, and the first air floating roller is tilted and fixed above the first arc roller; the transition roller is located on the side of the turning frame, the second arc roller is horizontally fixed above the back of the turning frame, and the second air floating roller is tilted and fixed below the second arc roller; wherein the angle between the first air floating roller and the second air floating roller is 90°; the air floating control unit is connected to the first air floating roller and the second air floating roller at the same time; The diaphragm is input from the bottom of the first arc roller, bypasses the first air floatation roller, the transition roller and the second air floatation roller, and is output from the top of the second arc roller; wherein the winding directions of the diaphragm on the first air floatation roller and the second air floatation roller are opposite; A correction unit is also arranged between the flip frame and the second air flotation roller, and the correction unit includes a correction probe, a correction frame and a correction execution component. The correction frame is located at the rear of the flip frame, the second air flotation roller and the second arc roller are fixed in the correction frame, and the correction probe is located on the side of the second arc roller; the correction execution component drives the correction frame to move in a direction parallel to the second arc roller.

2. A multifunctional coating device according to claim 1, characterized in that: The first coating module and the second coating module have the same structure; the first coating unit and the third coating unit have the same structure, and the second coating unit and the fourth coating unit have the same structure.

3. A multifunctional coating device according to claim 2, characterized in that: The first coating unit is a first PVDF coating unit or a first PMMA coating unit, and the second coating unit is a second ceramic coating unit; The third coating unit is a third PVDF coating unit or a third PMMA coating unit, and the fourth coating unit is a fourth ceramic coating unit.

4. A multifunctional coating device according to claim 3, characterized in that: The second ceramic coating unit comprises a ceramic material box, a ceramic coating roller and an approach roller. The ceramic coating roller is located in the ceramic material box, and a diaphragm channel is formed between the ceramic coating roller and the approach roller.

5. A multifunctional coating device according to claim 3, characterized in that: The first PMMA coating unit comprises a PMMA material box, a liquid-carrying roller, a transfer roller, a PMMA coating back roller and a PMMA coating roller, wherein a diaphragm channel is formed between the PMMA coating back roller and the PMMA coating roller, and the coating in the PMMA material box is transferred to the PMMA coating roller through the liquid-carrying roller and the transfer roller in sequence; The first PVDF coating unit includes a PVDF material box, a liquid roller, a transfer roller, a PVDF coating back roller and a PVDF coating roller, wherein a diaphragm channel is formed between the PVDF coating back roller and the PVDF coating roller, and the coating in the PVDF material box is transferred to the PVDF coating roller through the liquid roller and the transfer roller in sequence.

6. A multifunctional coating device according to claim 2, characterized in that: The first coating module also includes a transition roller, an approach roller and a climbing roller, wherein the first coating unit is arranged near the transition roller, and the second coating unit is arranged near the approach roller; the diaphragm is connected to the first coating unit through the transition roller, the diaphragm after passing through the first coating unit is connected to the second coating unit, and the diaphragm after passing through the second coating unit is output through the approach roller and the climbing roller; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm.

7. A coating method using the multifunctional coating device according to claim 1, characterized in that: The steps include: S01: Unwinding module is used to load the diaphragm; S02: The diaphragm enters the first coating unit and the second coating unit in the first coating module from the unwinding module; wherein only one of the first coating unit and the second coating unit is kept to coat the diaphragm; S03: drying the coated diaphragm in an oven; S04: Determine whether the dried diaphragm needs to be turned over. If it needs to be turned over, the diaphragm is turned over by the turning module and the process goes to step S05. If it does not need to be turned over, the process goes directly to step S05. S05: Determine whether the diaphragm needs to enter the second coating module for coating. If it needs to enter the second coating module, enter the third coating unit and the fourth coating unit in the second coating module, wherein only one of the third coating unit and the fourth coating unit is kept to coat the diaphragm; the oven is used to dry the coated diaphragm, and enter step S06; if it does not need to enter the second coating module, directly enter step S06; S06: The winding unit is used to wind up the dried diaphragm.

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