Coating equipment
By designing a movable coating die head and a coating equipment that combines push rods, slide rails, telescopic rods, and other components, the problem of uneven electrode coating was solved, achieving uniform coating thickness and consistent areal density, thereby improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING TALENT NEW ENERGY CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-24
AI Technical Summary
In existing technologies, the coating of the active material layer and/or solid electrolyte layer on the electrode is uneven, resulting in inconsistent areal density, which affects the accuracy of product performance verification and prolongs the R&D cycle.
Design a coating device in which the coating die head can move along a first direction to adjust the distance between the discharge port and the bearing surface at various points in a second direction to be equal. Combined with components such as push rods, slide rails and telescopic rods, ensure uniform coating thickness and consistent surface density.
This method achieves uniform coating thickness on the electrode surface, improves production efficiency and product yield, simplifies equipment structure, and ensures coating uniformity.
Smart Images
Figure CN224157166U_ABST
Abstract
Description
Technical Field
[0001] This utility model generally relates to the field of battery processing technology, and specifically to a coating equipment. Background Technology
[0002] In related technologies, uneven coating of the active material layer and / or solid electrolyte layer on the electrode sheet results in inconsistent areal density of the electrode sheet, which affects the accuracy of product performance verification and causes a long product development cycle. Utility Model Content
[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a coating equipment that can ensure uniform coating thickness and consistent surface density of the target coating during the coating process on the electrode surface, thereby improving production efficiency and product yield.
[0004] This utility model provides a coating device, comprising:
[0005] The support platform has a load-bearing surface;
[0006] A coating die head includes a cavity with a discharge port located on one side of a bearing surface in a first direction and extending a predetermined length along a second direction. The first direction is different from the second direction, which is perpendicular to the bearing surface, and the second direction is the width direction of the bearing surface.
[0007] The coating die head can move toward or away from the bearing surface along the first direction so that the distance between the discharge port and the bearing surface is equal at various points in the second direction.
[0008] As an optional solution, the coating die head includes a first die head and a second die head disposed opposite to each other, with a gap defined between the first die head and the second die head, and the gap being configured as a cavity;
[0009] The first mold head has a first chamfer on the edge of the surface facing away from the second mold head and close to the bearing surface.
[0010] The second mold head has a second chamfer on its surface away from the first mold head and near the bearing surface.
[0011] As an option, at least one of the first and second mold heads can move toward or away from the other to adjust the size of the cavity.
[0012] As an optional solution, a guide assembly is provided between the first mold head and the second mold head. The guide assembly includes a guide rail and a slider. The guide rail includes a fixed part and a guide part connected to the fixed part. The fixed part is fixedly connected to one of the first mold head and the second mold head. The extension direction of the guide part is parallel to the direction from the first mold head to the second mold head. The slider is fixedly connected to the other of the first mold head and the second mold head, and the slider is slidably connected to the guide part. The slider moves along the extension direction of the guide part to drive the first mold head and the second mold head to move towards each other or away from each other.
[0013] As an optional solution, the coating equipment also includes a push rod, which is fixedly connected to the coating die head. The push rod drives the coating die head to move along a third direction, which is perpendicular to the first direction and the second direction respectively.
[0014] As an optional solution, the coating equipment also includes a slide rail, the extension direction of which is parallel to a third direction, and the push rod can move along the extension direction of the slide rail to drive the coating die head to move along a third direction.
[0015] As an optional solution, the coating equipment also includes at least two telescopic rods, which are spaced apart along a second direction, and each telescopic rod is telescopic along a first direction. One end of the telescopic rod in the first direction is slidably connected to a slide rail, and the other end is connected to a push rod.
[0016] As an optional solution, multiple adsorption structures are provided on the bearing surface, and the multiple adsorption structures are evenly distributed at intervals on the bearing surface.
[0017] As an alternative, the orthographic projection of the discharge port onto the bearing surface lies within a region defined by multiple adsorption structures.
[0018] As an optional solution, the coating die head also includes an injection tube, which is connected to the interior of the cavity.
[0019] The coating equipment of this invention includes a coating die head, which comprises a cavity having a discharge port located on one side of a bearing surface in a first direction and extending a predetermined length along a second direction, the first direction being different from the second direction. The coating die head can move towards or away from the bearing surface along the first direction to ensure that the distance between the discharge port and the bearing surface is equal at all points in the second direction. By moving the coating die head in the first direction, this invention effectively ensures that the distance between the discharge port and the bearing surface is equal at all points in the second direction. This allows for uniform coating thickness and consistent surface density of the target coating on the electrode surface, thereby improving production efficiency and product yield. Attached Figure Description
[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0021] Figure 1 This is a schematic diagram of the structure of a coating device according to an embodiment of this application;
[0022] Figure 2 This is a partial structural diagram of a coating die and telescopic rod in a coating device according to an embodiment of this application;
[0023] Figure 3 This is a schematic diagram of the coating die head structure in a coating device according to an embodiment of this application;
[0024] Figure 4 This is a schematic diagram of another coating die head structure in the coating equipment according to an embodiment of this application;
[0025] Figure 5 This is a schematic diagram of the structure of a coating die and a guide assembly in a coating device according to an embodiment of this application;
[0026] Figure 6 This is a schematic diagram of the structure of a coating device according to an embodiment of this application;
[0027] Figure 7 This is a schematic diagram of the connection structure between the push rod and the coating die head in a coating device according to an embodiment of this application;
[0028] Figure 8 This is a schematic diagram of the cooperation structure between the telescopic rod and the slide rail in a coating device according to an embodiment of this application;
[0029] Figure 9 This is a schematic diagram of the structure of a support platform in a coating apparatus according to an embodiment of this application.
[0030] In the picture,
[0031] 1. Coating die head; 11. First die head; 12. Second die head; 13. Discharge port; 2. Injection pipe; 3. Push rod; 4. Telescopic rod; 5. Slide rail; 6. Guide assembly; 61. Guide rail; 611. Fixing part; 612. Guide part; 62. Slider; 7. Support platform; A1. Support surface; 8. Fixing plate; 9. Adsorption structure. Detailed Implementation
[0032] The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are only for explaining the relevant utility model and are not intended to limit the utility model.
[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the embodiments.
[0034] Embodiments of this application provide a coating apparatus, such as... Figure 1-5 The following are included:
[0035] Support platform 7, support platform 7 has a support surface A1;
[0036] The coating die head 1 includes a cavity with an outlet 13 located on one side of the bearing surface A1 in a first direction and extending a predetermined length along a second direction. The first direction is different from the second direction. The first direction is perpendicular to the bearing surface A1, and the second direction is the width direction of the bearing surface A1.
[0037] The coating die head 1 can move toward or away from the bearing surface A1 along the first direction so that the distance between the discharge port 13 and the bearing surface A1 is equal at various points in the second direction.
[0038] It should be noted that the coating equipment of the embodiments of this application can be applied to coating different materials on the surface of electrode sheets in the battery production process, and of course it can also be applied to coating other sheet substrates.
[0039] The support platform 7 primarily serves to support and carry the substrate. Specifically, the support platform 7 can be used to support the electrode sheet or other sheet-like substrate to be processed, and the coating die head 1 can also be mounted on the support platform 7.
[0040] Understandably, during battery manufacturing, the surface of the electrode includes the target coating area and blank areas located on either side of the target coating area. The target coating area refers to the region on the electrode where the positive electrode active material, negative electrode active material, or solid electrolyte is located, generally near the center of the electrode. The blank areas refer to the regions used to install the tabs, generally located near the sides of the electrode, on either side of the target coating. The blank areas typically do not have any coating material. However, in actual manufacturing, to protect the tabs, a protective layer is usually first applied to the blank areas. After the target coating is formed in the target coating area, the protective layer is removed, depending on the specific manufacturing process.
[0041] It can also be understood that the coating die 1 includes a cavity for holding the target slurry, which flows out from the outlet 13 of the cavity to achieve coating on the electrode sheet or other sheet-like substrate. The first direction can be understood as the direction perpendicular to the bearing surface A1 (e.g., Figure 1In the Z-direction, the discharge port 13 is located on one side of the bearing surface A1 in the first direction, which facilitates the slurry to flow out of the discharge port 13 by its own gravity and fluidity to achieve coating; the second direction can be understood as the direction from the blank area on the electrode to the target coating (or the width direction of the electrode or the width direction of the bearing surface A1, such as...). Figure 1 In the X direction, the discharge port 13 extends a predetermined length in the second direction. The predetermined length can be less than or equal to the size of the target coating area in the second direction. In this way, the discharge port 13 is strip-shaped, which is conducive to achieving strip coating, improving coating efficiency, and ensuring the uniformity of coating in all parts of the target coating area.
[0042] The coating die 1 can move toward or away from the bearing surface A1 along the first direction, which can be used to reliably adjust the thickness of the target coating. In the embodiments of this application, during the movement of the coating die 1 along the first direction, the distance between the discharge port 13 and the bearing surface A1 is always kept equal at all points in the second direction, which helps to ensure that the thickness of the target coating formed by the discharge port 13 is uniform at all points, thereby improving the coating effect.
[0043] The coating die 1 can move along the first direction in any manner. For example, the coating die 1 is mounted on a guide rail, the guide rail extending parallel to the first direction, and the coating die 1 moves along the extension direction of the guide rail; another example is... Figure 2 As shown, the coating die 1 can also be moved along the first direction by the telescopic movement of the telescopic rod 4. The main purpose is to reliably move the coating die 1 so that the distance between the discharge port 13 and the bearing surface A1 is equal.
[0044] The coating equipment of this application solves the problem of uneven thickness in the coating process of the prior art. The coating equipment of this application realizes slit coating. The discharge port 13 of the coating die 1 extends along the second direction. By moving the coating die 1 in the first direction, the distance between the discharge port 13 and the bearing surface A1 at all points in the second direction can be effectively ensured. Thus, in the process of coating the target coating on the electrode surface, the coating thickness is uniform and the areal density of the target coating is consistent, thereby improving the production efficiency and product yield.
[0045] As a feasible approach, such as Figure 3 and Figure 4 As shown, the coating die head 1 includes a first die head 11 and a second die head 12 disposed opposite to each other, and a gap is defined between the first die head 11 and the second die head 12, the gap being configured as a cavity;
[0046] The first mold head 11 has a first chamfer on the edge of the surface of the first mold head 11 that is away from the second mold head 12 and close to the bearing surface A1.
[0047] The second mold head 12 has a second chamfer on its surface away from the first mold head 11 and near the bearing surface A1.
[0048] Understandably, the gap between the first die head 11 and the second die head 12 is used to hold the slurry, and the gap is configured as a cavity, which facilitates the slurry's coating through its own gravity and fluidity. For example, Figure 3 As shown, both the first mold head 11 and the second mold head 12 can be in the shape of a "C" plate. The two "C" plates have openings facing each other, and the side wall plates on both sides of the openings are interlocked to define a gap. The size of the gap (i.e., the cavity) can be adjusted by adjusting the depth of the interlocking of the side wall plates on both sides of the opening of the "C" plate. Of course, the first mold head 11 and the second mold head 12 can also both be flat plates, with the middle of the two flat plates being thinner and the two sides being thicker to form a concave shape, thus defining a gap. The embodiments of this application are not specifically limited, as long as they can reliably hold the slurry and achieve strip coating.
[0049] It should be noted that when the slurry viscosity is low, the slurry can be directly injected into the cavity, and the slurry will be coated by its own gravity and fluidity; when the slurry viscosity is high, the slurry is injected into the cavity through a syringe, and the slurry will be coated by gravity and the pressure of the syringe.
[0050] In this embodiment, the first die head 11 has a first chamfer on its surface facing away from the second die head 12 near the bearing surface A1; the second die head 12 has a second chamfer on its surface facing away from the first die head 11 near the bearing surface A1. The first and second chamfers can be rounded chamfers or chamfers of other shapes, and the first and second chamfers can be the same or different. In this embodiment, the setting of the first and second chamfers facilitates the movement of the coating die head 1 during the coating process and prevents the coating die head 1 from damaging the coating.
[0051] In some embodiments, at least one of the first mold head 11 and the second mold head 12 may move toward or away from the other to adjust the size of the cavity.
[0052] In actual processing, the position of the first mold head 11 is fixed, and the second mold head 12 moves toward or away from the first mold head 11; or, the position of the second mold head 12 is fixed, and the first mold head 11 moves toward or away from the second mold head 12; or the first mold head 11 and the second mold head 12 can move toward or away from each other.
[0053] Specifically, the first mold head 11 and / or the second mold head 12 can be extended or retracted by a telescopic rod, so that at least one of the first mold head 11 and the second mold head 12 can move toward or away from the other; of course, a sliding groove is provided in the area where the first mold head 11 and the second mold head 12 are interlocked, so that at least one of the first mold head 11 and the second mold head 12 can move along the sliding groove to move toward or away from the other.
[0054] This embodiment facilitates reliable adjustment of the cavity size, thereby allowing for regulation of the slurry flow rate and ensuring the uniformity of the target coating based on the actual properties of the slurry.
[0055] In some embodiments, such as Figure 4 and 5 As shown, a guide assembly 6 is provided between the first mold head 11 and the second mold head 12. The guide assembly 6 includes a guide rail 61 and a slider 62. The guide rail 61 includes a fixing part 611 and a guide part 612 connected to the fixing part 611. The fixing part 611 is fixedly connected to one of the first mold head 11 and the second mold head 12. The extension direction of the guide part 612 is parallel to the direction from the first mold head 11 to the second mold head 12. The slider 62 is fixedly connected to the other of the first mold head 11 and the second mold head 12, and the slider 62 is slidably connected to the guide part 612. The slider 62 moves along the extension direction of the guide part 612 to drive the first mold head 11 and the second mold head 12 to move towards or away from each other.
[0056] It is understood that the guide rail 61 is L-shaped, the fixing part 611 can be fixedly connected to the first mold head 11, and the extension direction of the guide part 612 is parallel to the direction from the first mold head 11 to the second mold head 12 (e.g., Figure 1 (in the Y direction), which is conducive to guiding the first mold head 11 and the second mold head 12 to move towards or away from the other; the second mold head 12 can be fixedly connected to the slider 62, and the slider 62 is slidably connected to the guide part 612. The slider 62 drives the second mold head 12 to move towards or away from the first mold head 11; of course, it is also possible that the first mold head 11 is fixedly connected to the slider 62, and the fixing part 611 of the guide rail 61 of the second mold head 12 is fixedly connected.
[0057] The guide component 6 in this embodiment has a simple structure, is easy to implement, and can reliably adjust the size of the cavity.
[0058] As a feasible approach, such as Figure 1 and Figure 6 As shown, the coating equipment also includes a push rod 3, which is fixedly connected to the coating die head 1. The push rod 3 drives the coating die head 1 to move along a third direction, which is perpendicular to the first direction and the second direction respectively.
[0059] Among them, such as Figure 7 As shown, the push rod 3 and the coating die head can be connected by a fixing plate 8. The fixing plate has mounting holes, through which the push rod 3 passes. The fixing plate 8 is connected to the coating die head 1 by screws or bolts.
[0060] The third direction can be the length direction of the bearing surface A1 (e.g., Figure 6(Y direction in the diagram). The push rod 3 can be mounted on a guide rail, and the push rod 3 can move along the guide rail in the third direction; of course, the push rod 3 can also be moved along the third direction by driving the telescopic shaft through a drive motor.
[0061] In this embodiment, the push rod 3 drives the coating die head 1 to move along a third direction, which helps to ensure that the entire target coating area of the electrode sheet is coated to form the target coating; and by controlling the speed of the push rod 3, it is beneficial to regulate the coating speed, thereby improving the uniformity of the target coating.
[0062] For example, the coating speed can be 5 mm / min to 100 mm / min.
[0063] In a preferred embodiment, such as Figure 8 As shown, the coating equipment also includes a slide rail 5, the extension direction of which is parallel to the third direction. The push rod 3 can move along the extension direction of the slide rail 5 to drive the coating die head 1 to move along the third direction.
[0064] In this embodiment, the slide rail 5 has a simple structure, is easy to implement, and can reliably enable the push rod 3 to drive the coating die head 1 to move.
[0065] As a feasible approach, such as Figure 8 As shown, the coating equipment also includes at least two telescopic rods 4, which are spaced apart along a second direction, and each telescopic rod 4 is telescopic along a first direction. One end of the telescopic rod 4 in the first direction is slidably connected to the slide rail 5, and the other end is connected to the push rod 3.
[0066] The telescopic rods 4 can be two or more. When there are two telescopic rods 4, they are respectively located at both ends of the push rod 3 along the second direction. This helps to ensure that the distance between the discharge port 13 and the bearing surface A1 is equal at all points in the second direction during the movement of the coating die head 1 along the first direction driven by the telescopic rods 4. It also helps to ensure the uniformity of the target coating during the adjustment of the target coating thickness. When there are two or more telescopic rods 4, they are evenly distributed along the second direction.
[0067] For example, the thickness of the target coating can be adjusted from 0 to 500 μm.
[0068] In this embodiment, on the one hand, the telescopic rod 4 has a simple structure and is easy to implement, which is conducive to reliably adjusting the distance between the discharge port 13 and the bearing surface A1, and ensuring that the thickness of the target coating is uniform; on the other hand, one end of the telescopic rod 4 is slidably connected to the slide rail 5, and the other end is connected to the push rod 3, which simplifies the structure of the entire coating equipment, makes the structure compact, and can ensure that while the coating die head 1 moves along the first direction, it can also move along the third direction.
[0069] In some embodiments, such as Figure 1 , Figure 6 and Figure 9 As shown, multiple adsorption structures 9 (not shown in the figure) are provided on the bearing surface A1, and the multiple adsorption structures 9 are evenly distributed at intervals on the bearing surface A1.
[0070] The adsorption structure 9 can be, but is not limited to, a suction cup; in some embodiments, the bearing surface A1 is provided with vent holes at uniform intervals, and the vent holes are connected to a vacuum device to form the adsorption structure 9. When the electrode is placed on the bearing surface A1, the air between the electrode and the bearing surface A1 is extracted by the vacuum device, so that the electrode is stably fixed on the bearing surface A1, which helps to ensure a good coating effect.
[0071] In this embodiment, the adsorption structure 9 helps to position and fix the electrode, ensuring that the electrode remains flat, does not bulge, and does not wrinkle during the coating process, thereby ensuring a good coating effect.
[0072] In a preferred embodiment, the orthographic projection of the discharge port 13 onto the bearing surface A1 lies within the area defined by the plurality of adsorption structures 9.
[0073] It is understandable that the area defined by the adsorption structure 9 is the area for placing the electrode. The orthographic projection of the discharge port 13 on the bearing surface A1 is located within the area defined by the adsorption structure 9, which helps to ensure that the position of the discharge port 13 corresponds to that of the electrode, thereby reliably achieving coating.
[0074] In some embodiments, the coating die head 1 further includes an injection tube 2, which communicates with the interior of the cavity.
[0075] In this embodiment, the injection pipe 2 serves two purposes: firstly, it facilitates the reliable injection of slurry into the cavity of the coating die head 1 to achieve coating; secondly, when the slurry viscosity is too high, pressure can be applied to the slurry inside the cavity through the injection pipe 2 to ensure that the slurry flows out reliably from the outlet 13 to achieve coating.
[0076] In summary, the coating equipment of the embodiments of this application can effectively ensure that the distance between the discharge port 13 and the bearing surface A1 in the second direction is equal by moving the coating die 1 in the first direction. This ensures that the coating thickness is uniform and the surface density of the target coating is consistent during the coating process on the electrode surface, thereby improving production efficiency and product yield.
[0077] Furthermore, by setting the push rod 3, slide rail 5 and telescopic rod 4, the structure is simple and easy to implement. On the one hand, one end of the telescopic rod 4 is slidably connected to the slide rail 5, and the other end is connected to the push rod 3, which simplifies the structure of the entire coating equipment, making the structure compact, and can ensure that while the coating die head 1 moves along the first direction, it can also move along the third direction. On the other hand, it is beneficial to reliably adjust the distance between the discharge port 13 and the bearing surface A1, so as to ensure the uniform thickness of the target coating.
[0078] The coating equipment of this application will be described below through a specific embodiment.
[0079] like Figure 1-9 As shown, the coating equipment includes a support platform 7 and a coating die 1. The support platform 7 has a support surface A1, and the support platform 7 is positioned in a second direction (e.g., Figure 1 A slide rail 5 is set on each of the opposite sides in the X direction (as shown in the image), and the slide rail 5 is along a third direction (such as...). Figure 1 Extending in the Y direction, each slide rail 5 is slidably connected to a telescopic rod 4, which extends along the first direction (e.g., the Y direction). Figure 1 The two telescopic rods 4 extend in the Z direction and are fixedly connected to the free ends of the two telescopic rods 4. The push rod 3 extends along the second direction and is fixedly connected to the coating die head 1. The coating die head 1 is located on one side of the bearing surface A1 in the first direction.
[0080] The coating die 1 includes a first die 11 and a second die 12. The first die 11 and the second die 12 are C-shaped plates, which are interlocked and define a gap. The gap has an opening on the side near the bearing surface A1 in a first direction. The gap is configured as a cavity for holding slurry, and the opening is configured as a discharge port 13. The discharge port 13 extends along a second direction. A guide assembly 6 is provided between the first die 11 and the second die 12. The guide assembly 6 includes a guide rail 61 and a slider 62. The guide rail 61 includes a fixing part 611 and a guide part 612 connected to the fixing part 611. The fixing part 611 is fixedly connected to the first die 11. The extension direction of the guide part 612 is parallel to a third direction. The slider 62 is fixedly connected to the second die 12 and is slidably connected to the guide part 612.
[0081] An adsorption structure 9 is provided on the bearing surface A1. The electrode is adsorbed and placed on the bearing surface A1, which helps to fix the position of the electrode and ensure the flatness of the electrode.
[0082] The specific coating process is as follows: Place the foil on the bearing surface A1, adjust the telescopic rod 4 to adjust the distance between the outlet 13 of the coating die head 1 and the foil, thereby determining the coating thickness, adjust the position of the slider 62 in the guide part 612 to adjust the cavity size of the coating die head 1, determine the moving speed of the push rod 3, and introduce the slurry into the cavity of the coating die head 1 to carry out coating.
[0083] For example, by adjusting the gap between the first die head 11 and the second die head 12 to 10 micrometers, setting the speed of the push rod 3 to 20 mm / min, and the height of the telescopic rod 4 to 200 micrometers, the coating can be completed.
[0084] For example, by adjusting the gap between the first mold head 11 and the second mold head 12 to 20 micrometers, setting the speed of the push rod 3 to 25 mm / min, and the height of the telescopic rod 4 to 300 micrometers, the coating can be completed.
[0085] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A coating equipment, characterized in that, include: The support platform has a bearing surface; A coating die head, the coating die head including a cavity, the cavity having a discharge port, the discharge port being located on one side of the bearing surface in a first direction, and the discharge port extending a predetermined length along a second direction, the first direction being different from the second direction, the first direction being a direction perpendicular to the bearing surface, and the second direction being the width direction of the bearing surface; The coating die head can move toward or away from the bearing surface along the first direction so that the distance between the discharge port and the bearing surface is equal at various points in the second direction.
2. The coating equipment according to claim 1, characterized in that, The coating die head includes a first die head and a second die head disposed opposite to each other, with a gap defined between the first die head and the second die head, the gap being configured as the cavity; The first mold head has a first chamfer on the edge of its surface facing away from the second mold head and near the bearing surface; The second mold head has a second chamfer on the edge of its surface facing away from the first mold head and close to the bearing surface.
3. The coating equipment according to claim 2, characterized in that, At least one of the first mold head and the second mold head can move toward or away from the other to adjust the size of the cavity.
4. The coating equipment according to claim 3, characterized in that, A guide assembly is provided between the first mold head and the second mold head. The guide assembly includes a guide rail and a slider. The guide rail includes a fixed part and a guide part connected to the fixed part. The fixed part is fixedly connected to one of the first mold head and the second mold head. The extension direction of the guide part is parallel to the direction from the first mold head to the second mold head. The slider is fixedly connected to the other of the first mold head and the second mold head, and the slider is slidably connected to the guide part. The slider moves along the extension direction of the guide part to drive the first mold head and the second mold head to move towards each other or away from each other.
5. The coating apparatus according to any one of claims 1-4, characterized in that, The coating equipment also includes a push rod, which is fixedly connected to the coating die head. The push rod drives the coating die head to move along a third direction, which is perpendicular to the first direction and the second direction respectively.
6. The coating equipment according to claim 5, characterized in that, The coating equipment also includes a slide rail, the extension direction of which is parallel to the third direction, and the push rod can move along the extension direction of the slide rail to drive the coating die head to move along the third direction.
7. The coating equipment according to claim 1, characterized in that, The coating equipment further includes at least two telescopic rods, which are spaced apart along the second direction, and each telescopic rod is telescopic along the first direction. One end of the telescopic rod is slidably connected to the slide rail in the first direction, and the other end is connected to the push rod.
8. The coating apparatus according to any one of claims 1-4, characterized in that, Multiple adsorption structures are provided on the bearing surface, and the multiple adsorption structures are evenly distributed at intervals on the bearing surface.
9. The coating equipment according to claim 8, characterized in that, The orthographic projection of the discharge port on the bearing surface lies within the area defined by the plurality of adsorption structures.
10. The coating apparatus according to any one of claims 1-4, characterized in that, The coating die head also includes a liquid injection tube, which is connected to the interior of the cavity.