Laboratory coating machine with adsorption hole cleaning function

Abstract

The utility model discloses a laboratory coating machine with an adsorption hole cleaning function, which comprises a coating base platform, the coating base platform is hollow to form a negative pressure cavity, the negative pressure cavity is communicated with the outside through adsorption holes in the surface of the coating base platform, and a current collector is adsorbed on the surface of the coating base platform through negative pressure; a cleaning assembly is arranged in the negative pressure cavity and comprises ejector pins in one-to-one correspondence with the adsorption holes, and the ejector pins are arranged on the connecting plate, are in transmission connection with the driving assembly through the connecting plate and have a first position where the ejector pins stretch into the adsorption holes and a second position where the ejector pins retreat from the adsorption holes and are completely contained in the negative pressure cavity; according to the scheme, the ejector pin is moved to the first position, slurry and coagulum remaining in the adsorption holes are ejected out, and then cleaning of the adsorption holes is achieved; after cleaning is completed, the ejector pin is separated from the adsorption hole and returns to the second position, and normal adsorption in the coating process is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of coating equipment technology, specifically, it relates to a laboratory coating machine with adsorption pore cleaning function. Background Technology

[0002] Laboratory coating machines typically use a wire bar to move a doctor blade to coat the slurry. During this process, due to the viscosity coefficient of the slurry, the current collector may shift as the doctor blade moves due to the hysteresis effect, which directly affects the normal progress of the coating and the coating quality.

[0003] To address this issue, existing laboratory coating machines typically incorporate adsorption holes on the coating substrate surface. A negative pressure device adsorbs the current collector through these holes, preventing displacement of the current collector during the coating process and ensuring proper coating. However, in actual use, the width of the current collector varies depending on the specific needs of each coating operation, often resulting in the current collector failing to completely cover the coating substrate. Furthermore, the coating slurry needs to be manually added to the front of the doctor blade, inevitably leading to instances of excessive addition. When coating is performed under these conditions, excess slurry overflowing from the edge of the current collector enters the adsorption holes under the adsorption effect, causing blockage. Blocked adsorption holes cannot provide effective adsorption force, eventually weakening the fixation of the current collector.

[0004] The adsorption pores are usually small and difficult to clean. In order to ensure the stability of the negative pressure, the coating platform is often integrated with the negative pressure chamber, which increases the difficulty of disassembly and cleaning. Even if it can be disassembled, the adsorption effect may still be reduced due to the installation accuracy during the installation process, which is not conducive to the long-term use of the laboratory coating machine.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to address one of the problems in the prior art mentioned above, and to provide a laboratory coating machine with an adsorption pore cleaning function. By setting a cleaning component in the negative pressure chamber to clean the adsorption pores, the relative displacement between the coating base and the cleaning component allows the cleaning component to extend into the adsorption pores and remove the blocked slurry and solids. The adsorption pores can be cleaned without disassembly, which improves the user experience and service life of the laboratory coating machine.

[0007] To achieve the above objectives, this utility model provides a laboratory coating machine with an adsorption hole cleaning function, including a coating base and a plurality of adsorption holes disposed on the coating base. The adsorption holes connect the negative pressure cavity formed in the hollow coating base with the outside of the coating base.

[0008] It also includes a cleaning component, which includes a number of ejector pins located in the negative pressure chamber that correspond one-to-one with the adsorption holes. The ejector pins and the coating substrate can be relatively displaced along the opening direction of the adsorption holes. It has a first position where the ejector pins penetrate the adsorption holes, and a second position where the ejector pins are completely removed from the adsorption holes and housed in the negative pressure chamber.

[0009] In the above scheme, the relative displacement between the ejector pin and the coating substrate requires cleaning of the adsorption holes. When the ejector pin reaches the adsorption hole and moves to the first position, it pushes out the residual slurry and solids in the adsorption hole. At this time, it is only necessary to wipe the surface of the coating substrate to remove the pushed-out slurry and solids. After cleaning, the ejector pin gradually moves away from the adsorption hole to the second position. Through the above process, the adsorption holes are unblocked and cleaned, ensuring the stability of the adsorption of the current collector by the coating substrate.

[0010] Furthermore, a first limiting member is provided inside the negative pressure chamber. The first limiting member extends from the end of the adsorption hole near the negative pressure chamber along the opening direction of the adsorption hole into the negative pressure chamber, and is used to limit the movement path of the ejector pin between the first position and the second position.

[0011] Because the adsorption orifice is very small, if there is no guidance and limiting, the ejector pin may be damaged because the ejector pin and the adsorption orifice cannot be aligned when there is relative displacement between the ejector pin and the coating substrate. The setting of the first limiting component limits the movement path of the ejector pin, avoids this problem, and improves the reliability of the adsorption orifice cleaning function.

[0012] Furthermore, the first limiting member includes a limiting tube coaxial with the adsorption hole, the ejector pin is located inside the limiting tube, and the tube wall of the limiting tube has axially spaced communication ports that connect the two sides of the tube wall.

[0013] The above solution sets the first limiting component as a limiting tube, which can more fully limit the movement path of the ejector pin and fully prevent the ejector pin from detaching. At the same time, considering that a part of the ejector pin is always located in the limiting tube, which itself has a blocking effect on the limiting tube and affects the adsorption effect, the connection port is set on the tube wall to effectively reduce the impact of the cooperation between the limiting tube and the ejector pin on the adsorption effect.

[0014] Furthermore, the ejector pin has a limiting protrusion, which abuts against the end of the first limiting member when it is in the first position.

[0015] The above solution uses the limiting protrusion to abut against the end of the first limiting member, so that the ejector pin can be stably stopped at the first position, thereby achieving further limiting of the relative displacement between the ejector pin and the coating substrate.

[0016] Furthermore, a cleaning unit is formed at the end of the ejector pin facing the adsorption hole. The shape of the cleaning unit matches the adsorption hole, and when it is located inside the adsorption hole, it isolates the outside of the coating substrate from the negative pressure chamber.

[0017] In the above scheme, the shape of the cleaning unit matches the adsorption pore, so that the cleaning unit can abut against the edge of the adsorption pore, and can more thoroughly remove the slurry and solids from the adsorption pore.

[0018] Furthermore, the ejector pin includes a core layer and a surface layer. The core layer is made of a material with elastic deformation capability and is dumbbell-shaped. One end of the dumbbell shape forms a cleaning unit, which is interference-fitted with the adsorption hole.

[0019] The outer layer is made of a rigid material, which wraps around the core layer from the outside and exposes the cleaning unit.

[0020] In the above solution, the design of the ejector pin structure avoids large deformation of the ejector pin due to friction when it comes into contact with the adsorption hole, and improves the cleaning effect of the ejector pin on the adsorption hole. Compared with a rigid ejector pin with a fixed shape, the ejector pin composed of a rigid shell and an elastic core material has a smaller weight and lower manufacturing cost.

[0021] Furthermore, the cleaning assembly also includes a connecting plate, which is located inside the negative pressure chamber. Several pins are connected to the connecting plate through the end away from the adsorption hole, and are perpendicular to the plane of the connecting plate.

[0022] The above solution, through the connecting plate, enables unified driving of multiple ejector pins by a single driving component, further reducing costs and improving the driving consistency of the ejector pins. This avoids the problem of insufficient consistency when each ejector pin is driven separately, which prevents the cleaning of all adsorption holes from being completed at once, thus improving cleaning efficiency.

[0023] Furthermore, a second limiting member is provided inside the negative pressure chamber to limit the movement direction of the connecting plate along the opening direction of the adsorption hole. The connecting plate is slidably connected to the negative pressure chamber through the second limiting member.

[0024] In the above solution, by setting a second limiting component, the relative movement path between the connecting plate and the coating base is restricted on the one hand, and the friction during the movement of the connecting plate is reduced on the other hand, thereby reducing the friction between the ejector pin and the first limiting component.

[0025] Furthermore, the laboratory coating machine with adsorption hole cleaning function also includes a drive assembly, which is connected to the cleaning assembly for driving the ejector pin to move between a first position and a second position along the adsorption hole opening direction.

[0026] Furthermore, in the first position, one end of the ejector pin extending into the adsorption hole is flush with the surface of the coating substrate.

[0027] In the above solution, the end of the ejector pin is flush with the coating base, which allows the user to wipe the coating base more smoothly. It avoids the problem of the ejector pin deforming due to friction between the ejector pin and the cloth, and also avoids the residue of slurry in the adsorption hole due to the ejector pin not being fully extended. This facilitates a more thorough cleaning of the adsorption hole and improves the user experience.

[0028] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0029] 1. By adjusting the relative displacement between the ejector pin and the coating base, the ejector pin can extend into the adsorption hole, pushing the slurry and solidified material adhering to and remaining in the adsorption hole onto the surface of the coating base. The slurry and solidified material can then be directly removed by wiping the coating base. Afterward, the ejector pin is moved out of the adsorption hole by the relative displacement between the ejector pin and the coating base, thus achieving thorough cleaning of the adsorption hole, ensuring stable adsorption of the current collector, and improving the user experience of the coating machine.

[0030] 2. By setting the first limiting component, the movement path of the ejector pin is limited, so that even when the ejector pin is completely detached from the adsorption hole, it can still smoothly enter the adsorption hole for cleaning, avoiding the problem that the ejector pin and the adsorption hole cannot be aligned and therefore cannot be cleaned; at the same time, a limiting protrusion is set on the ejector pin, and the setting position of the limiting protrusion is such that when the ejector pin is in the first position, the limiting protrusion abuts against the first limiting component, so that the ejector pin can accurately reach the first position when there is relative displacement with the coating substrate.

[0031] 3. The end of the ejector pin forms a cleaning unit that matches the shape of the adsorption hole, further improving the ejector pin's ability to clean liquid slurry and enabling more thorough cleaning of the adsorption hole without leaving any residue.

[0032] 4. The connecting plate allows one drive assembly to drive several ejector pins in the negative pressure chamber simultaneously. The connecting plate is slidably connected to the negative pressure chamber through the second limiting member, which avoids friction between the connecting plate and the negative pressure chamber when relative displacement occurs, thus preventing the cleaning process from being affected. Furthermore, the ejector pins are very small and are easily damaged when the connecting plate shifts or tilts. The sliding connection effectively avoids this problem. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the coating base in the laboratory coating machine of this utility model, which combines a cleaning component and a driving component.

[0034] Figure 2 yes Figure 1 The laboratory coating machine shown is a first cross-sectional view at the centerline of the drive assembly.

[0035] Figure 3 yes Figure 1 The second cross-sectional view of the laboratory coating machine shown is located at the centerline of the drive assembly.

[0036] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0037] Figure 5 This is a schematic diagram of one structure of the ejector pin in the laboratory coating machine described in this utility model;

[0038] Figure 6 yes Figure 1 The third cross-sectional view of the laboratory coating machine shown is located at the centerline of the drive assembly.

[0039] Figure 7 yes Figure 6 A schematic diagram of the structure of the cleanup component.

[0040] In the figure: 1. Coating base; 11. Adsorption hole; 12. First limiting member; 121. Connecting port; 13. Slide rail; 2. Cleaning assembly; 21. Ejector pin; 211. Core layer; 212. Surface layer; 22. Connecting plate; 221. Pulley; 23. Cleaning unit; 3. Drive assembly. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0042] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] This utility model provides a laboratory coating machine with an adsorption pore cleaning function, such as... Figures 1 to 7 As shown, it includes a coating base 1, which has a hollow interior forming a negative pressure cavity. The negative pressure cavity is connected to the outside through a number of adsorption holes 11 on the surface of the coating base 1. Thus, during coating, the current collector is fixed on the surface of the coating base 1 by negative pressure adsorption to achieve smooth coating of the slurry.

[0045] It also includes a cleaning component 2, which includes a plurality of pins 21 located in the negative pressure chamber and corresponding to the adsorption holes 11. The pins 21 and the coating base 1 can be relatively displaced along the opening direction of the adsorption holes 11. It has a first position where the pins 21 penetrate the adsorption holes 11, and a second position where the pins 21 are completely removed from the adsorption holes 11 and stored in the negative pressure chamber.

[0046] It should be noted that the negative pressure chamber is completely sealed. Figure 1 One side wall of the negative pressure chamber was removed to facilitate the display of the internal structure of the negative pressure chamber.

[0047] In the above scheme, by causing relative displacement between one of the ejector pin 21 and the coating substrate 1, the ejector pin 21 can switch between a first position and a second position. During the process of switching from the second position to the first position, the ejector pin 21 gradually extends into the adsorption hole 11, pushing out the slurry and solidified material remaining in the adsorption hole 11 after coating to the surface of the coating substrate 1. The pushed-out slurry and solidified material can then be wiped away by wiping the surface of the coating substrate 1. Then, during the process of switching from the first position to the second position, the ejector pin 21 gradually withdraws from the adsorption hole 11. The needle is retracted into the negative pressure chamber, completing the cleaning of the adsorption holes 11. Since the ejector pin 21 is completely withdrawn from the adsorption holes 11, it will not affect the normal adsorption of the adsorption holes 11 during the subsequent coating process. Thus, while ensuring that the coating base 1 has an adsorption function, it adds an adsorption hole cleaning function to the laboratory coating machine. On the one hand, the adsorption holes 11 can be cleaned without disassembling the coating base 1. On the other hand, it also avoids the repeated disassembly and assembly of the coating base 1, which would affect the sealing of the negative pressure chamber. Compared with the existing laboratory coating machines, it has a longer service life and a better user experience.

[0048] The laboratory coating machine with adsorption pore cleaning function can also be equipped with a drive component 3, which can more conveniently control the relative displacement between the coating base 1 and the ejector pin 21.

[0049] In one embodiment of this utility model, the driving component 3 is connected to the cleaning component 2 in a transmission manner, and the driving pin 21 moves in the negative pressure chamber along the opening direction of the adsorption hole 11. At this time, the coating base 1 remains stationary relative to the laboratory coating machine. Since the coating thickness is controlled by the gap between the coating base 1 and the doctor blade, the stationary coating base 1 in this scheme is more conducive to improving the accuracy and stability of coating.

[0050] Alternatively, in another embodiment of this utility model, the driving component 3 is connected to the coating base 1 in a transmission manner, driving the coating base 1 to move along the opening direction of the adsorption hole 11. At this time, the cleaning component 2 is fixedly connected to the laboratory coating machine through the fixing rod that passes through the negative pressure chamber. Since the coating base 1 is located on the surface and the cleaning component 2 is located inside the coating base 1, the transmission structure for driving the coating base 1 to move is simpler and easier to maintain and replace. In addition, the fixing rod can also be used as a limiting structure for the movement of the coating base 1.

[0051] However, regardless of which of the two solutions is adopted, the drive component 3 can be selected from devices known in the art that can realize linear motion of the ejector pin 21 / coating platform 1, such as linear motors and linear guides; it can also be a combination of multiple devices, such as a combination of rotary motors, gears and racks; a combination of rotary motors and ball screws, etc.; the specific connection method is set according to actual needs. The drive component 3 can penetrate the negative pressure chamber from the bottom or side and extend into the negative pressure chamber to drive the cleaning component 2; in addition, the drive component 3 can also be an operating end connected to the coating platform 1 or the cleaning component 2, and the user can manually control the operating end to clean the adsorption hole 11.

[0052] Figures 1 to 7 The location and transmission connection of the drive component 3 shown are only illustrative. In actual applications, the location and transmission method of the drive component 3 can be adjusted according to the actual situation.

[0053] For ease of cleaning, in the first position, the ejector pin 21 stops at a position where its end is flush with the surface of the coating substrate 1. At this time, the ejector pin 21 fills the adsorption hole 11, and the slurry and solids ejected by the ejector pin 21 float on the surface of the coating substrate 1. The slurry and solids can be easily removed by wiping the surface of the coating substrate 1 with a rag, alcohol swab, or other cleaning items. Furthermore, in the flush position, the rag and alcohol swab will not rub against the ejector pin 21, which avoids deformation or damage to the ejector pin 21 during the rubbing process and also avoids injury to the operator during the cleaning process. In other embodiments, the end of the ejector pin 21 can be set to protrude from the surface of the coating substrate 1 in the first position, or the end of the ejector pin 21 can be slightly recessed into the surface of the coating substrate 1. However, in the case of a recess, the slurry and solids may not be fully removed.

[0054] The following describes in more detail the specific embodiments of this utility model, taking the transmission connection between the drive component 3 and the cleaning component 2 as an example, in conjunction with the accompanying drawings.

[0055] Example 1

[0056] As an embodiment of this utility model, this embodiment provides a laboratory coating machine with adsorption pore cleaning function, as detailed below.

[0057] In this embodiment, as Figure 1 As shown, the adsorption hole 11 on the coating substrate 1 is a circular hole, and the ejector pin 21 is correspondingly set to a cylindrical shape. The diameter of the ejector pin 21 is slightly smaller than the diameter of the adsorption hole 11. On the one hand, it can enter the adsorption hole 11 more easily, and on the other hand, it can effectively clean the adsorption hole 11 and ensure that the adsorption hole 11 is unobstructed after cleaning.

[0058] However, in the above solution, the ejector pin 21 cannot fully clean the adsorption pore 11, and there may be residue. This residue can still cause changes in the pore size of the adsorption pore 11, directly affecting the adsorption effect. Therefore, such as... Figure 2 As shown, a cleaning unit 23 is formed at one end of the ejector pin 21 near the surface of the coating base 1. The shape of the cleaning unit 23 matches the adsorption hole 11. In this embodiment, the cleaning unit 23 is a cylinder with the same diameter as the adsorption hole 11. In this way, after the cleaning unit 23 extends into the adsorption hole 11, it can thoroughly remove the slurry and solids in the adsorption hole 11, thus improving the cleaning effect. In addition, after the cleaning unit 23 extends into the adsorption hole 11, it can achieve isolation between the outside of the coating base 1 and the inside of the negative pressure chamber. Even if the adsorption function of the coating machine is not turned off during the cleaning process, physical isolation can be achieved through the cleaning unit 23 to prevent the slurry and solids that were originally stuck in the adsorption hole 11 from being loosened and sucked into the negative pressure chamber.

[0059] However, due to the presence of the cleaning unit 23, high precision is required for the movement of the ejector pins 21. To improve the movement accuracy while the ejector pins 21 move synchronously, the cleaning assembly 2 also includes a connecting plate 22. The connecting plate 22 is also located in the negative pressure chamber and is set perpendicular to the opening direction of the adsorption hole 11. The end of each ejector pin 21 away from the adsorption hole 11 is connected to the connecting plate 22. The drive assembly 3 is connected to the drive assembly 3 through the connecting plate 22. At this time, the drive assembly 3 can transmit the transmission of the connecting plate 22 to each ejector pin 21 without difference, effectively ensuring the control accuracy when the ejector pins 21 move synchronously. Due to the presence of the connecting plate 22, it is only necessary to set a drive rod that extends through the negative pressure chamber to the side of the connecting plate 22 away from the adsorption hole 11. The drive rod is connected to the drive assembly 3 through the drive rod. In other embodiments, the drive rod can be replaced with a rack depending on the drive assembly 3. The setting position of the drive rod can also be adjusted according to the actual situation, for example, it can be set at the center, eccentric part or side edge of the connecting plate 22.

[0060] In addition, in other embodiments, the ejector pins 21 located in the negative pressure chamber can also move independently of each other. For this purpose, each ejector pin 21 can be connected to different drive components 3 by a plurality of connecting plates 22 connected to different ejector pins 21, or each ejector pin 21 can be connected to different drive components 3.

[0061] The bottom of the negative pressure chamber is provided with an air extraction port (not shown), which is connected to the negative pressure device (not shown). In order to avoid affecting the formation of negative pressure at the adsorption hole 11, there is a gap between the edge of the connecting plate 22 and the cavity wall of the negative pressure chamber. In other embodiments, a balance hole (not shown) connecting both sides of the connecting plate 22 can also be provided on the connecting plate 22 to ensure the smooth formation of negative pressure at the adsorption hole 11.

[0062] Example 2

[0063] As another embodiment of the present invention, this embodiment makes the following improvements based on embodiment one.

[0064] In this embodiment, as Figure 3 As shown, a first limiting member 12 is also provided in the negative pressure chamber. The first limiting member 12 is located in the negative pressure chamber and extends along the opening direction of the adsorption hole 11. One end is connected to the edge of the adsorption hole 11. The ejector pin 21 extends into the first limiting member 12 from the other end and is movably set relative to the first limiting member 12 along the extension direction of the first limiting member 12. At least a part of the ejector pin 21 is always located in the first limiting member 12. Due to the presence of the first limiting member 12, when the ejector pin 21 switches between the first position and the second position, it is limited by the first limiting member 12 and will not cause the cleaning unit 23 to fail to align with the adsorption hole 11, thereby improving the service life and cleaning reliability of the cleaning assembly 2.

[0065] Specifically, such as Figure 4 As shown, the first limiting member 12 is a limiting tube with one end connected to the adsorption hole 11, and the inner diameter of the limiting tube is the same as the diameter of the adsorption hole 11. The tube wall of the limiting tube has a plurality of connecting ports 121 spaced apart along the opening direction of the adsorption hole 11, and the two sides of the tube wall are connected through the connecting ports 121. On the one hand, the limiting tube can better limit the movement path of the ejector pin 21. On the other hand, considering the blocking of the limiting tube by the cleaning unit 23, the connection ports 121 are set to ensure the smooth formation of negative pressure at the adsorption hole 11. In other embodiments, the first limiting member 12 can also be set in other forms, such as a plurality of limiting posts spaced equally along the circumference of the adsorption hole 11. The cross-sectional shape of the limiting posts can also be adjusted according to the actual situation, such as circular, trapezoidal, triangular, elliptical, fan-shaped, etc. Due to the existence of the interval between the limiting posts, there is no need to set additional connecting ports 121, which simplifies the structure of the first limiting member 12 and reduces the production difficulty.

[0066] To ensure that the ejector pin 21 can smoothly reach the first and second positions, and that in the first position, the end of the ejector pin 21 can be flush with or protrude from the surface of the coating base 1, the length of the ejector pin 21 should be greater than or equal to the distance from the surface of the coating base 1 to the end of the first limiting member 12; at the same time, the length of the first limiting member 12 should be greater than the difference between the depth of the negative pressure chamber and the length of the ejector pin 21; in this embodiment, in order to ensure that the end of the ejector pin 21 is flush with the surface of the coating base 1 in the first position, a limiting protrusion (not shown in the figure) is also provided on the ejector pin 21. The limiting protrusion can abut against the first limiting member 12 when the end of the ejector pin 21 is flush with the surface of the coating base 1, thereby limiting the stroke of the ejector pin 21 and preventing the ejector pin 21 from excessively displacing and protruding from the surface of the coating base 1.

[0067] Example 3

[0068] As another embodiment of the present invention, this embodiment is further improved on the basis of embodiment two as follows.

[0069] In this embodiment, as Figure 5As shown, the ejector pin 21 includes a core layer 211 and a surface layer 212. The core layer 211 is made of wear-resistant rubber material, while the surface layer 212 is made of metal material. The core layer 211 is dumbbell-shaped, with one end forming a cleaning unit 23. The surface layer 212 encloses all parts except the cleaning unit 23 to support the ejector pin 21. Because the cleaning unit 23 has elastic deformation capability, it can more fully clean the adsorption hole 11, improving the wear resistance of the cleaning unit 23. Furthermore, due to the support of the surface layer 212, the ejector pin 21 will not be subjected to significant deformation due to friction with the first limiting member 12 and the adsorption hole 11, ensuring smooth cleaning and reducing the probability of damage to the ejector pin 21 to a certain extent.

[0070] In other embodiments, the core layer 211 and the surface layer 212 may also be made of other materials. For the core layer 211, other polymer materials with elastic deformation capabilities, such as elastic polyurethane, may also be used; while the surface layer 212 may be made of other rigid materials commonly used and common in the art.

[0071] Furthermore, the ejector pin 21 in this embodiment can also be used in the laboratory coating machine with adsorption hole cleaning function described in Embodiment 1. The solution combining this embodiment and Embodiment 1 also falls within the protection scope of this utility model.

[0072] Example 4

[0073] As another embodiment of the present invention, this embodiment further improves upon the first embodiment by providing a second limiting member inside the negative pressure chamber to limit the movement path of the connecting plate 22.

[0074] Specifically, such as Figure 6 As shown, the second limiting member is fixed on the inner wall of the negative pressure chamber and is configured as a slide rail 13 extending along the opening direction of the adsorption hole 11. The connecting plate 22 is slidably connected to the inner wall of the negative pressure chamber through the slide rail 13. In order to ensure smooth sliding, the connecting plate 22 is provided with a pulley 221 that cooperates with the slide rail 13. When the connecting plate 22 is displaced relative to the negative pressure chamber, the pulley 221 moves in the slide rail 13 in a rolling manner, changing the relative sliding between the connecting plate 22 and the negative pressure chamber into rolling, reducing friction. As a result, the connecting plate 22 experiences less friction during the movement and can achieve displacement smoothly.

[0075] To further ensure the stability of the movement of the connecting plate 22, such as Figure 6As shown, in this embodiment, the connecting plate 22 is provided with 4 pulleys, and the 4 pulleys are arranged in pairs on opposite sides of the connecting plate 22. Correspondingly, there are also 4 slide rails 13 in the negative pressure cavity. The four slide rails 13 cooperate with the 4 pulleys 221 respectively to realize the stable sliding of the connecting plate 22 in the negative pressure cavity.

[0076] In the above scheme, the pulley 211 provided on the connecting plate 22 is only one specific embodiment of the present utility model and does not represent a limitation on the present utility model. In other embodiments, the pulley 211 can also be a slider or other structure that can cooperate with the slide rail. Based on the technical principles of the present utility model, the scheme obtained by those skilled in the art after making conventional replacements to the second limiting member also falls within the protection scope of the present utility model.

[0077] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A laboratory coating machine with adsorption pore cleaning function, characterized in that, The application relates to a coating base (1) and a plurality of adsorption holes (11) arranged on the coating base (1), wherein the adsorption holes (11) are in communication with a negative pressure cavity formed in the coating base (1) and the outside of the coating base (1). The application further relates to a cleaning assembly (2) comprising a plurality of thimbles (21) arranged in the negative pressure cavity and corresponding to the adsorption holes (11), wherein the thimbles (21) and the coating base (1) are relatively displaceable along the direction in which the adsorption holes (11) are arranged, the thimbles (21) have a first position in which the thimbles (21) penetrate the adsorption holes (11), and a second position in which the thimbles (21) are completely separated from the adsorption holes (11) and accommodated in the negative pressure cavity.

2. The laboratory coater with a function of cleaning adsorption holes according to claim 1, wherein The negative pressure cavity is provided with a first limiting member (12) extending from one end of the adsorption hole (11) close to the negative pressure cavity to the inside of the negative pressure cavity along the direction in which the adsorption hole (11) is arranged, and used for limiting the movement path of the thimbles (21) between the first position and the second position.

3. The laboratory coater with adsorption hole cleaning function according to claim 2, characterized in that, The first limiting member (12) comprises a limiting tube coaxial with the adsorption hole (11), the thimbles (21) are arranged in the limiting tube, the tube wall of the limiting tube is provided with axially spaced communication openings (121) for communication between the two sides of the tube wall.

4. The laboratory coater with a function of cleaning adsorption holes according to claim 2, wherein The thimbles (21) are provided with limiting protrusions, the limiting protrusions abut against the end of the first limiting member (12) when the thimbles (21) are in the first position.

5. The laboratory coater with a function of cleaning adsorption holes according to claim 1, wherein The thimbles (21) are provided with cleaning units (23) at one end close to the adsorption holes (11), the cleaning units (23) are matched with the adsorption holes (11) in shape, and separate the outside of the coating base (1) from the negative pressure cavity when the thimbles (21) are arranged in the adsorption holes (11).

6. The laboratory coater with a function of cleaning adsorption holes according to claim 5, wherein The thimbles (21) comprise core layers (211) and surface layers (212), the core layers (211) are made of materials with elastic deformation ability, and are in the shape of dumbbells, one end of the dumbbell-shaped core layer (211) forms the cleaning unit (23); the surface layers (212) are made of rigid materials, and wrap the core layers (211) and expose the cleaning units (23) to the outside. The cleaning units (23) are in interference fit with the adsorption holes (11).

7. The laboratory coater with adsorption hole cleaning function according to any one of claims 1 to 6, characterized in that, The cleaning assembly (2) further comprises a connecting plate (22) arranged in the negative pressure cavity, and the thimbles (21) are connected to the connecting plate (22) through the ends away from the adsorption holes (11) respectively. The thimbles (21) are perpendicular to the plane in which the connecting plate (22) is arranged.

8. The laboratory coater with a function of cleaning adsorption holes according to claim 7, wherein The negative pressure cavity is further provided with a second limiting member for limiting the movement direction of the connecting plate (22) along the direction in which the adsorption holes are arranged, and the connecting plate (22) is in sliding connection with the negative pressure cavity through the second limiting member.

9. The laboratory coater with adsorption hole cleaning function according to any one of claims 1 to 8, characterized in that, The application further relates to a driving assembly (3) in driving connection with the cleaning assembly (2) and used for driving the thimbles (21) to move along the direction in which the adsorption holes (11) are arranged between the first position and the second position.

10. The laboratory coater with a function of cleaning adsorption holes according to claim 9, wherein When the thimbles (21) are in the first position, the end of the thimbles (21) penetrating into the adsorption holes (11) is flush with the surface of the coating base (1).

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