Double-sided coating mechanism and CCM production line

Abstract

The utility model discloses a double-sided coating mechanism and a CCM (continuous casting molding) production line. The double-sided coating mechanism comprises a base; the coating roller group is arranged on the base; the first coating die head is arranged on the base; the second coating die head is arranged on the base, the second coating die head is located below the first coating die head, and a coating channel is formed between the second coating die head and the first coating die head; the die head adjusting mechanism is connected with the first coating die head and / or the second coating die head; and the front and back positions of the first coating die head and / or the second coating die head are / is adjusted through the die head adjusting mechanism. According to the utility model, based on the viscosity condition of the slurry sprayed on the base film, the slurry with low viscosity is sprayed on one surface of the base film, and then the slurry with high viscosity is sprayed on the other surface of the base film, so that in the double-surface spraying process of the base film, the deformation quantity of the base film after one surface of the base film is sprayed is small, the uniform spraying of the other surface of the base film can be ensured, and the production efficiency is improved. The problem of matching of upper and lower layers of slurry with different viscosities is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating equipment, in particular to a double-sided coating mechanism and a CCM production line. Background Art

[0002] The coating process is a process in which one or more layers of liquid are applied to a thin film substrate, and the applied liquid coating is then dried in an oven or cured to form a film layer with special functions.

[0003] Taking the CCM (catalyst coated membrane) process as an example, a double-sided coating system is used to apply catalyst slurry to both sides of the proton exchange membrane, forming a CCM structure. Existing double-sided coating equipment typically includes an A-side coating die and a B-side coating die. The A-side coating die coats the slurry on the A-side (front) side of the base membrane, and then the B-side coating die coats the B-side (back) side of the base membrane.

[0004] When the properties of the slurry coated on the base film A side are different from those of the slurry coated on the base film B side, for example, the viscosity of the slurry is different, if the slurry with high viscosity is coated first, the slurry with high viscosity is more likely to cause wrinkling of the base film, and the base film will deform greatly after coating, resulting in the deformation of the base film when coating on the other side, which will affect the coating effect on the other side. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the base film is easily wrinkled when the properties of the slurry coated on the front side of the base film are different from those of the slurry coated on the back side of the base film, thereby affecting the coating effect, thereby providing a double-sided coating mechanism and CCM production line.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A double-sided coating mechanism, comprising:

[0008] base;

[0009] a coating roller assembly, the coating roller assembly being arranged on the base;

[0010] a first coating die head, wherein the first coating die head is disposed on the base;

[0011] a second coating die head, the second coating die head being disposed on the base, the second coating die head being located below the first coating die head and forming a coating channel suitable for the base film to pass therethrough with the first coating die head;

[0012] A die adjustment mechanism is provided on the base and is connected to the first coating die and / or the second coating die; the first coating die and / or the second coating die are adjusted in front and back position by the die adjustment mechanism to adjust the coating order of the first coating die and the second coating die.

[0013] Further optimizing the technical solution, the die head adjustment mechanism is suitable for adjusting the front and rear position of the first coating die head; the die head adjustment mechanism includes:

[0014] at least one first linear guide rail, the first linear guide rail being arranged on the base along a front-to-rear direction;

[0015] a first die head mounting seat, wherein the first die head mounting seat is slidably assembled on the first linear guide rail and connected to the first coating die head;

[0016] A first driving structure is connected to the first die mounting seat and is suitable for driving the first die mounting seat to move back and forth along the first linear guide rail.

[0017] Further optimizing the technical solution, the first driving structure includes:

[0018] at least two first bearing seats, wherein the first bearing seats are arranged on the base;

[0019] a first bearing ball screw, the first bearing ball screw being rotatably disposed on the first bearing seat;

[0020] a first ball screw seat, the first ball screw seat being threadably assembled with the first bearing ball screw, and the first ball screw seat being connected to the first die head mounting seat;

[0021] A first drive motor assembly is coaxially connected to the first bearing ball screw.

[0022] To further optimize the technical solution, a first grating ruler is arranged between the first die head mounting seat and the base, and the first grating ruler is suitable for detecting the moving position of the first die head mounting seat; the reading head of the first grating ruler is installed on the first die head mounting seat, and the scale body of the first grating ruler is installed on the base.

[0023] Further optimizing the technical solution, the second coating die head is raised and lowered by a second die head lifting and adjusting mechanism; the second die head lifting and adjusting mechanism includes:

[0024] at least one second linear guide rail, the second linear guide rail being arranged on the base in a vertical direction;

[0025] a second die head mounting seat, the second die head mounting seat being slidably assembled on the second linear guide rail and connected to the second coating die head;

[0026] The second driving structure is connected to the second die head mounting seat and is suitable for driving the second die head mounting seat to move up and down along the second linear guide rail.

[0027] To further optimize the technical solution, the coating roller group includes a flattening roller, a first passing roller, a pre-coating roller and a second passing roller. The flattening roller, the first passing roller and the pre-coating roller are set at different heights. The flattening roller, the first passing roller, the pre-coating roller and the second passing roller are suitable for forming a wrap angle on the base film after coating the base film, and the base film located between the pre-coating roller and the second passing roller is in a horizontal state.

[0028] To further optimize the technical solution, the pre-coating roller is raised and lowered by a pre-coating roller adjustment mechanism to adjust the tension of the base film and to keep the base film between the pre-coating roller and the second roller in a horizontal state.

[0029] To further optimize the technical solution, the pre-coating roller adjustment mechanism includes a pair of pre-coating roller adjustment structures respectively connected to the two ends of the pre-coating roller; the pre-coating roller adjustment structure includes:

[0030] a mounting plate, the mounting plate being arranged on the base;

[0031] A linear guide slider, the linear guide slider being vertically arranged on the mounting plate;

[0032] A bearing seat plate, wherein the bearing seat plate is slidably arranged on the linear guide slider, and the pre-coating roller is rotatably arranged on the bearing seat plate via a bearing;

[0033] at least two third bearing seats, the third bearing seats being arranged on the bearing seat plate;

[0034] a ball screw, the ball screw being rotatably disposed on the third bearing seat;

[0035] a third ball screw seat, the third ball screw seat being threadably assembled with the ball screw and connected to the bearing seat plate;

[0036] A control component is connected to the ball screw and is suitable for controlling the rotation of the ball screw.

[0037] Further optimizing the technical solution, the control component includes:

[0038] A worm gear reducer, wherein the output shaft of the worm gear reducer is coaxially connected to the ball screw;

[0039] A handwheel is connected to the input shaft of the worm gear reducer and is suitable for controlling the worm gear reducer.

[0040] A CCM production line comprises the double-sided coating mechanism.

[0041] The technical solution of this utility model has the following advantages:

[0042] 1. The utility model provides a double-sided coating mechanism, which, based on the viscosity of the slurry sprayed onto the base film, first sprays the slurry with low viscosity onto one side of the base film, and then sprays the slurry with high viscosity onto the other side of the base film. Furthermore, during the double-sided spraying process of the base film, the deformation of the base film is small after spraying one side, which can ensure uniform spraying of the other side of the base film, solving the problem of matching the upper and lower layers of slurries with different viscosities.

[0043] 2. The utility model provides a double-sided coating mechanism, in which the second coating die head is raised and lowered by the second die head lifting and adjusting mechanism, thereby adjusting the distance between the die head and the base film. The thickness of the coating layer can be adjusted over a wide range, and the deformation of the base film caused by the pressure generated by the slurry on the base film is offset, thereby achieving precise coating of the slurry.

[0044] 3. The double-sided coating mechanism provided by this utility model comprises a flattening roller, a first pass roller, a pre-coating roller, and a second pass roller, adapted to create a wrap angle around the base film after coating, thereby increasing the tension of the base film, preventing wrinkles and resolving the problem of uneven base film. Furthermore, by using the flattening roller and the first pass roller to tension the base film, the gap between the pre-coating roller and the second pass roller is reduced, correspondingly reducing the overall size of the device.

[0045] 4. The utility model provides a double-sided coating mechanism, in which the pre-coating roller is slightly adjusted up and down through the pre-coating roller adjustment mechanism to adjust the tension of the base film, and to keep the base film between the pre-coating roller and the second roller in a horizontal state at all times, thereby ensuring that the slurry can be evenly coated on both sides of the base film. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 This is a schematic structural diagram from a first perspective of the double-sided coating mechanism provided by the utility model;

[0048] Figure 2This is a schematic structural diagram of the double-sided coating mechanism provided by the present invention from a second perspective;

[0049] Figure 3 This is a side view of the double-sided coating mechanism provided by the utility model after being cut apart;

[0050] Figure 4 This is a schematic diagram of the structure of the double-sided coating mechanism provided by the present invention when the door is open;

[0051] Figure 5 This is a schematic structural diagram of the die head adjustment mechanism in the double-sided coating mechanism provided by the present invention;

[0052] Figure 6 This is a schematic structural diagram of the second die head lifting and adjusting mechanism in the double-sided coating mechanism provided by the present invention;

[0053] Figure 7 A side view of the pre-coating roller adjustment mechanism in the double-sided coating mechanism provided by the present invention;

[0054] Figure 8 This is a structural schematic diagram of the pre-coating roller adjustment mechanism in the double-sided coating mechanism provided by the utility model.

[0055] Figure numerals: 1, flattening roller; 2, first roller; 3, pre-coating roller; 4, second roller; 5, die head adjustment mechanism, 51, first bearing ball screw, 52, first bearing seat, 53, first linear guide, 54, first coupling, 55, first servo motor, 56, first reducer, 57, first grating scale, 58, first die head mounting seat, 59, first adapter plate, 510, first ball screw seat; 6, first coating die head, 61, first die frame crossbeam; 7, second die head lifting adjustment mechanism, 71, second bearing ball screw, 72, second bearing seat, 73, second linear guide Linear guide rail, 74, second coupling, 75, second servo motor, 76, second reducer, 77, second grating scale, 78, second die head mounting seat, 79, second adapter plate, 710, second ball screw seat; 8, second coating die head, 81, second mold frame beam; 9, base, 91, loading bin body, 92, bin door; 10, pre-coating roller adjustment mechanism, 101, handwheel, 102, ball screw, 103, third ball screw seat, 104, bearing seat plate, 105, linear guide slider, 106, worm gear reducer, 107, mounting plate, 108, third bearing seat. DETAILED DESCRIPTION

[0056] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0057] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, as used herein, the singular forms "a," "an," and "including" may also be intended to include the plural forms. The terms "comprising," "including," and "having" are inclusive and, therefore, specify the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0058] Although the terms first, second, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply a sequence or order when used herein. In addition, in the description of the present invention, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0059] For ease of description, spatial relative terms can be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "front", "back", "center", "inside", "longitudinal", "lateral", "side", "vertical", "outside", etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation other than the orientation depicted in the figure. For example, if the mechanism in the figure flips, the element described as "below other elements or features" or "below other elements or features" will then be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The mechanism can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0060] The coating process is a process in which one or more layers of liquid are applied to a thin film substrate, and the applied liquid coating is then dried in an oven or cured to form a film layer with special functions.

[0061] Taking the CCM process as an example, a double-sided coating system is used to apply the catalyst slurry to both sides of the proton exchange membrane, forming a CCM structure. Existing double-sided coating equipment typically includes an A-side coating die and a B-side coating die. The A-side coating die coats the slurry on the A side of the base membrane, and then the B-side coating die coats the B side of the base membrane.

[0062] When the properties of the slurry coated on the base film A side are different from those of the slurry coated on the base film B side, for example, the viscosity of the slurry is different, if the slurry with high viscosity is coated first, the slurry with high viscosity is more likely to cause wrinkling of the base film, and the base film will deform greatly after coating, resulting in the deformation of the base film when coating on the other side, which will affect the coating effect on the other side.

[0063] Based on this, the utility model provides a double-sided coating mechanism, which controls the coating order of the first coating die head and the second coating die head according to the characteristics of the slurry, and then controls the coating die head with a low viscosity of the sprayed slurry to spray the slurry first, and then controls the coating die head with a high viscosity of the sprayed slurry to spray the slurry, so that the slurry can be evenly sprayed on both sides of the base film.

[0064] The specific embodiments of the present invention are described in detail below in conjunction with the double-sided coating mechanism of the first aspect of the present invention.

[0065] It should be noted that the double-sided coating mechanism of the first aspect of the present invention is only a preferred embodiment of the present invention. The double-sided coating mechanism of the present invention can adopt the double-sided coating mechanism of the first aspect of the present invention or other structures. For the convenience of explanation, the double-sided coating mechanism of the first aspect of the present invention will be explained below.

[0066] Combine Figures 1 to 8 As shown, this embodiment discloses a double-sided coating mechanism, including a base 9, a coating roller group, a first coating die 6, a second coating die 8, and a die adjustment mechanism 5. The coating roller group is arranged on the base 9, and the base film is wound on the coating roller group. The first coating die 6 is arranged on the base 9, and more specifically, the first coating die 6 is fixedly arranged on the base 9 by a first mold support beam 61. The second coating die 8 is arranged on the base 9, and more specifically, the second coating die 8 is fixedly arranged on the base 9 by a second mold support beam 81. The second coating die 8 is located below the first coating die 6 and forms a coating channel suitable for the base film to pass through between the second coating die 6 and the first coating die 6. The die adjustment mechanism 5 is arranged on the base 9, and the die adjustment mechanism 5 is connected to the first coating die 6 and / or the second coating die 8.

[0067] The double-sided coating mechanism uses the die adjustment mechanism 5 to adjust the front and rear positions of the first coating die 6 and / or the second coating die 8 according to the slurry characteristics, and adjusts the coating order of the first coating die 6 and the second coating die 8. When the viscosity of the slurry sprayed by the first coating die 6 is greater than the viscosity of the slurry sprayed by the second coating die 8, the first coating die 6 is adjusted to move behind the second coating die 8, so that the second coating die 8 first coats the back side of the base film, and then the first coating die 6 coats the front side of the base film. When the viscosity of the slurry sprayed by the second coating die 8 is greater than the viscosity of the slurry sprayed by the first coating die 6, the first coating die 6 is adjusted to move in front of the second coating die 8, so that the first coating die 6 first coats the front side of the base film, and then the second coating die 8 coats the back side of the base film.

[0068] This embodiment is based on the viscosity of the slurry sprayed onto the base film. The slurry with low viscosity is first sprayed onto one side of the base film, and then the slurry with high viscosity is sprayed onto the other side of the base film. Furthermore, during the double-sided spraying process of the base film, the deformation of the base film is small after one side is sprayed, which can ensure uniform spraying of the other side of the base film, solving the problem of matching the upper and lower layers of slurries with different viscosities.

[0069] In some embodiments, the die adjustment mechanism 5 is adapted to adjust the front and rear positions of the first coating die 6. Figure 5 As shown, the die adjustment mechanism 5 includes a first linear guide 53, a first die mounting base 58, and a first drive structure. At least one first linear guide 53 is provided, preferably two first linear guides 53 are provided, and the first linear guides 53 are arranged on the base 9 in the front-to-back direction. The first die mounting base 58 is slidably mounted on the first linear guide 53 and connected to the first coating die 6. The first drive structure is connected to the first die mounting base 58 and is suitable for driving the first die mounting base 58 to move back and forth along the first linear guide 53.

[0070] The first drive structure includes a first bearing seat 52, a first bearing ball screw 51, a first ball screw seat 510 and a first drive motor assembly. There are at least two first bearing seats 52, and the first bearing seats 52 are arranged on the base 9. The first bearing ball screw 51 is rotatably arranged on the first bearing seat 52. The first ball screw seat 510 is threadedly fitted with the first bearing ball screw 51, and the first ball screw seat 510 is connected to the first die head mounting seat 58. The first drive motor assembly is coaxially connected to the first bearing ball screw 51. The first drive motor assembly includes a first servo motor 55 and a first reducer 56. The first reducer 56 is connected to the first bearing ball screw 51 through a first coupling 54, and the output shaft end of the first servo motor 55 is connected to the first reducer 56. In this embodiment, the first servo motor 55 is controlled to drive the first bearing ball screw 51 to move, and then drive the first ball screw seat 510 to move forward and backward. When the first ball screw seat 510 moves, it will drive the first die head mounting seat 58 to move on the first linear guide rail 53, thereby driving the first coating die head 6 to move forward and backward.

[0071] In some embodiments, a first optical scale 57 is disposed between the first die head mounting base 58 and the base 9. The first optical scale 57 is adapted to detect the movement of the first die head mounting base 58. The first optical scale 57 is used to precisely control the position of the first die head mounting base 58. The reading head of the first optical scale 57 is mounted on the first die head mounting base 58 via a first adapter plate 59, and the scale body of the first optical scale 57 is mounted on the base 9.

[0072] In some embodiments, the second coating die 8 is raised and lowered by the second die lifting and adjusting mechanism 7, thereby adjusting the distance between the die and the base film. The thickness of the coating layer can be adjusted over a wide range, and the deformation of the base film caused by the pressure generated by the slurry on the base film is offset, thereby achieving precise coating of the slurry.

[0073] Combine Figure 6 As shown, the second die head lifting and adjusting mechanism 7 includes a second linear guide 73, a second die head mounting base 78, and a second drive structure. At least one second linear guide 73 is provided, and the second linear guide 73 is disposed vertically on the base 9. The second die head mounting base 78 is slidably mounted on the second linear guide 73 and connected to the second coating die 8. The second drive structure is connected to the second die head mounting base 78 and is adapted to drive the second die head mounting base 78 to move up and down along the second linear guide 73.

[0074] The second drive structure includes a second bearing seat 72, a second bearing ball screw 71, a second ball screw seat 710 and a second drive motor assembly. There are at least two second bearing seats 72, and the second bearing seats 72 are arranged on the base 9. The second bearing ball screw 71 is rotatably arranged on the second bearing seat 72. The second ball screw seat 710 is threadedly fitted with the second bearing ball screw 71, and the second ball screw seat 710 is connected to the second die head mounting seat 78. The second drive motor assembly is coaxially connected to the second bearing ball screw 71. The second drive motor assembly includes a second servo motor 75 and a second reducer 76. The second reducer 76 is connected to the second bearing ball screw 71 through a second coupling 74, and the output shaft end of the second servo motor 75 is connected to the second reducer 76. In this embodiment, when the second servo motor 75 is running, it can drive the second bearing ball screw 71 to rotate, and then drive the second ball screw seat 710 to move forward and backward. When the second ball screw seat 710 moves, it will drive the second die head mounting seat 78 and the second coating die head 8 to move up and down.

[0075] In some embodiments, a second optical scale 77 is disposed between the second die head mounting base 78 and the base 9. The second optical scale 77 is adapted to detect the movement of the second die head mounting base 78. The second optical scale 77 controls the precise positioning of the second die head mounting base 78. The reading head of the second optical scale 77 is mounted on the second die head mounting base 78 via a second adapter plate 79, and the scale body of the second optical scale 77 is mounted on the base 9.

[0076] During the spraying process of the base film, in order to support the film, the current technical solution usually sets a coating roller in front of the B-side coating die (second coating die). However, this design will cause the head volume to increase, and the distance between the B-side coating die and the coating roller is also too large, which directly affects the stable support of the coating roller on the film. Due to unstable support, the film is prone to shaking, which makes it easy to wrinkle, resulting in poor accuracy and stability of the B-side coating, which greatly affects the quality of the coating. Therefore, a double-sided coating equipment with high coating quality is needed.

[0077] In order to solve this technical problem, Figure 1 and Figure 3 As shown, in some embodiments, the coating roller group includes a flattening roller 1, a first passing roller 2, a pre-coating roller 3 and a second passing roller 4. The flattening roller 1, the first passing roller 2 and the pre-coating roller 3 are set at different heights. The flattening roller 1, the first passing roller 2, the pre-coating roller 3 and the second passing roller 4 are suitable for forming a wrap angle on the base film after the base film is coated.

[0078] In this embodiment, the flattening roller 1, first roller 2, pre-coating roller 3, and second roller 4 are adapted to create a wrap angle on the base film after coating, thereby increasing the tension of the base film, preventing wrinkles and addressing the problem of uneven base film. Furthermore, by using the flattening roller 1 and first roller 2 to tension the base film, the spacing between the pre-coating roller 3 and the second roller 4 is reduced, correspondingly reducing the overall volume of the device.

[0079] After the slurry is applied to the surface of the base film, the slurry has a certain weight. Under the pressure of the slurry, the base film may be pressed and tilted, resulting in the upper and lower surfaces of the base film being unable to be evenly coated with the slurry. To solve this technical problem, in some embodiments, the pre-coating roller 3 is slightly adjusted up and down by the pre-coating roller adjustment mechanism 10 to adjust the tension of the base film and keep the base film between the pre-coating roller 3 and the second roller 4 in a horizontal state, ensuring that the slurry can be evenly coated on both sides of the base film.

[0080] Combine Figure 7 and Figure 8 As shown, the pre-coating roller adjustment mechanism 10 includes a pair of pre-coating roller adjustment structures respectively connected to the two ends of the pre-coating roller 3. The pre-coating roller adjustment structure includes a mounting plate 107, a linear guide slider 105, a bearing seat plate 104, a third bearing seat 108, a ball screw 102, a third ball screw seat 103 and a control assembly. The mounting plate 107 is set on the base 9. The linear guide slider 105 is vertically set on the mounting plate 107. The bearing seat plate 104 is slidably set on the linear guide slider 105, and the pre-coating roller 3 is rotatably set on the bearing seat plate 104 through a bearing. There are at least two third bearing seats 108, and the third bearing seat 108 is set on the bearing seat plate 104. The ball screw 102 is rotatably set on the third bearing seat 108. The third ball screw seat 103 is threadedly fitted with the ball screw 102, and the third ball screw seat 103 is connected to the bearing seat plate 104. The control assembly is connected to the ball screw 102 and is suitable for controlling the rotation of the ball screw 102. The control assembly includes a worm gear reducer 106 and a handwheel 101. The output shaft of the worm gear reducer 106 is coaxially connected to the ball screw 102. The handwheel 101 is connected to the input shaft of the worm gear reducer 106 and is suitable for controlling the worm gear reducer 106.

[0081] In this embodiment, the staff controls the rotation of the handwheel 101 to drive the worm gear reducer 106 to rotate, and then drives the ball screw 102 to rotate. When the ball screw 102 rotates, it will drive the third ball screw seat 103 to move up and down linearly. The third ball screw seat 103 drives the bearing seat plate 104 to move up and down along the linear guide slider 105, so that the pre-coating roller 3 moves up and down along the linear guide slider 105. The position of the pre-coating roller 3 is controlled, and the displacement of the base film after coating can be fine-tuned.

[0082] A container body 91 is provided on the left and right sides of the base 9 respectively. A hand wheel 101 is provided in the container body 91. A container door 92 is provided on the container body 91. When the container door 92 is opened, the hand wheel 101 can be operated.

[0083] The working process of the above-mentioned double-sided coating mechanism is as follows:

[0084] The base film is flattened by the flattening roller 1, and then passes through the first coating roller 2 to the pre-coating roller 3. The position of the pre-coating roller 3 is controlled by the pre-coating roller adjustment mechanism 10, and the level of the base film between the second coating roller 4 and the pre-coating roller 3 is controlled, and then the base film enters between the first coating die 6 and the second coating die 8 for coating.

[0085] When coating the base film, the coating thickness on the base film is detected. When the coating thickness deviates from the set thickness, the second coating die head 8 can be driven to rise and fall by the second die head lifting adjustment mechanism 7 to adjust the coating thickness.

[0086] When the viscosity of the slurry sprayed from the first coating die 6 and the second coating die 8 is different, the die adjustment mechanism 5 can be used to adjust the front and rear positions of the first coating die 6, first spraying the slurry with low viscosity onto one side of the base film, and then spraying the slurry with high viscosity onto the other side of the base film.

[0087] The specific embodiments of the present invention are described in detail below in conjunction with the CCM production line of the second aspect of the present invention.

[0088] This embodiment discloses a CCM production line, including a double-sided coating mechanism that coats catalyst slurry on both sides of a proton exchange membrane to form a CCM structure.

[0089] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A double-sided coating mechanism, characterized in that: include: base (9); A coating roller group, wherein the coating roller group is arranged on the base (9); a first coating die (6), wherein the first coating die (6) is arranged on the base (9); a second coating die head (8), the second coating die head (8) being arranged on the base (9), the second coating die head (8) being located below the first coating die head (6) and forming a coating channel suitable for the base film to pass therethrough with the first coating die head (6); A die head adjustment mechanism (5) is provided on the base (9), and the die head adjustment mechanism (5) is connected to the first coating die head (6) and / or the second coating die head (8); the first coating die head (6) and / or the second coating die head (8) are adjusted in front and back positions by the die head adjustment mechanism (5) to adjust the coating sequence of the first coating die head (6) and the second coating die head (8).

2. The double-sided coating mechanism according to claim 1, characterized in that: The die head adjustment mechanism (5) is suitable for adjusting the front and rear positions of the first coating die head (6); the die head adjustment mechanism (5) comprises: at least one first linear guide rail (53), the first linear guide rail (53) being arranged on the base (9) along a front-to-back direction; a first die head mounting seat (58), wherein the first die head mounting seat (58) is slidably mounted on the first linear guide rail (53) and connected to the first coating die head (6); A first driving structure is connected to the first die mounting seat (58) and is suitable for driving the first die mounting seat (58) to move back and forth along the first linear guide rail (53).

3. The double-sided coating mechanism according to claim 2, characterized in that: The first driving structure includes: at least two first bearing seats (52), wherein the first bearing seats (52) are arranged on the base (9); a first bearing ball screw (51), the first bearing ball screw (51) being rotatably disposed on the first bearing seat (52); A first ball screw seat (510), wherein the first ball screw seat (510) is threadedly assembled with the first bearing ball screw (51), and the first ball screw seat (510) is connected to the first die head mounting seat (58); A first drive motor assembly is coaxially connected to the first bearing ball screw (51).

4. The double-sided coating mechanism according to claim 2, characterized in that: A first grating ruler (57) is provided between the first die head mounting seat (58) and the base (9), and the first grating ruler (57) is suitable for detecting the moving position of the first die head mounting seat (58); the reading head of the first grating ruler (57) is mounted on the first die head mounting seat (58), and the ruler body of the first grating ruler (57) is mounted on the base (9).

5. The double-sided coating mechanism according to claim 1, characterized in that: The second coating die head (8) is raised and lowered by a second die head raising and lowering adjustment mechanism (7); the second die head raising and lowering adjustment mechanism (7) comprises: at least one second linear guide rail (73), the second linear guide rail (73) being arranged on the base (9) in an up-down direction; A second die head mounting seat (78), the second die head mounting seat (78) is slidably mounted on the second linear guide rail (73) and connected to the second coating die head (8); A second driving structure is connected to the second die head mounting seat (78) and is suitable for driving the second die head mounting seat (78) to move up and down along the second linear guide rail (73).

6. The double-sided coating mechanism according to any one of claims 1 to 5, characterized in that: The coating roller group comprises a flattening roller (1), a first passing roller (2), a pre-coating roller (3) and a second passing roller (4); the flattening roller (1), the first passing roller (2) and the pre-coating roller (3) are arranged at different heights; the flattening roller (1), the first passing roller (2), the pre-coating roller (3) and the second passing roller (4) are suitable for forming a wrap angle on the base film after the base film is coated.

7. The double-sided coating mechanism according to claim 6, characterized in that: The pre-coating roller (3) is raised and lowered by a pre-coating roller adjustment mechanism (10) to adjust the tension of the base film and to keep the base film between the pre-coating roller (3) and the second roller (4) in a horizontal state.

8. The double-sided coating mechanism according to claim 7, characterized in that: The pre-coating roller adjustment mechanism (10) comprises a pair of pre-coating roller adjustment structures respectively connected to both ends of the pre-coating roller (3); the pre-coating roller adjustment structure comprises: a mounting plate (107), the mounting plate (107) being arranged on the base (9); A linear guide slider (105), wherein the linear guide slider (105) is vertically arranged on the mounting plate (107); A bearing seat plate (104), wherein the bearing seat plate (104) is slidably arranged on a linear guide slider (105), and the pre-coating roller (3) is rotatably arranged on the bearing seat plate (104) via a bearing; at least two third bearing seats (108), the third bearing seats (108) being arranged on the bearing seat plate (104); a ball screw (102), the ball screw (102) being rotatably mounted on the third bearing seat (108); A third ball screw seat (103), wherein the third ball screw seat (103) is threadedly assembled with the ball screw (102), and the third ball screw seat (103) is connected to the bearing seat plate (104); A control component is connected to the ball screw (102) and is suitable for controlling the rotation of the ball screw (102).

9. The double-sided coating mechanism according to claim 8, characterized in that: The control component includes: A worm gear reducer (106), wherein the output shaft of the worm gear reducer (106) is coaxially connected to the ball screw (102); A hand wheel (101) is connected to the input shaft of the worm gear reducer (106) and is suitable for controlling the worm gear reducer (106).

10. A CCM production line, characterized in that: The invention comprises the double-sided coating mechanism according to any one of claims 1 to 9.

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