Facial mask processing device

By designing multiple impregnation tanks and an extrusion mechanism, the problems of low production efficiency, serious waste, and cross-contamination in existing mask processing equipment are solved, achieving efficient and uniform impregnation and cleaning of mask fabric.

CN224077720UActive Publication Date: 2026-04-03SHANGHAI JUNYAO MEDICAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-17
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing mask processing equipment cannot process multiple mask sheets at the same time, resulting in low production efficiency; the essence is wasted in large quantities and is difficult to distribute evenly, easily generating bubbles and cross-contamination.

Method used

The design incorporates multiple impregnation tanks and extrusion mechanisms to achieve batch impregnation of multiple batches of mask fabric. Excess essence is squeezed out via extrusion blocks, and the modular design facilitates cleaning.

Benefits of technology

It improves mask production efficiency, reduces essence waste, ensures even distribution of essence, and avoids cross-contamination.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a facial mask processing device which comprises a processing table, a plurality of supporting legs are fixedly connected to the bottom of the processing table, a support is fixedly connected to the top of the processing table, an air cylinder is installed on the top of the support, and a lifting plate is fixedly connected to the bottom end of an output shaft of the air cylinder. A dipping mechanism is arranged below the lifting plate, a liquid storage tank is arranged below the dipping mechanism, and the liquid storage tank is placed on the machining table. According to the mask dipping device, batch dipping processing can be conducted on multiple batches of mask cloth at the same time so as to meet the large-scale mask production requirement, redundant essence can be extruded out of the mask cloth and recycled, the mask cloth can be flattened so that bubbles on the surface of the mask cloth can be removed, related dipping parts can be detached, and therefore the mask dipping device is convenient to use. Therefore, essence remaining on the surfaces of related parts can be cleaned after the mask cloth is dipped for a long time.
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Description

Technical Field

[0001] This utility model belongs to the field of facial mask processing technology, and in particular relates to a facial mask processing device. Background Technology

[0002] Facial masks are skincare products that quickly improve skin condition, offering multiple functions such as moisturizing, brightening, deep cleansing, repairing and soothing, and controlling oil and acne. Facial mask manufacturing is the process of transforming the mask's formula design into the production of the finished product.

[0003] When processing a face mask, the cut mask sheet needs to be soaked in the essence to ensure even absorption. Currently, there are some face mask processing equipment on the market, such as a face mask processing liquid soaking device with publication number CN218691061U disclosed on the China Patent Network. This device can be used for the soaking process of face mask processing, but it has some defects and shortcomings that need to be improved: (1) Due to the structural design, some existing face mask processing equipment can only soak a single face mask sheet and cannot process multiple face mask sheets at the same time. The single soaking capacity is relatively limited, which makes it difficult to meet the needs of large-scale face mask production; (2) When soaking the face mask sheet, the face mask sheet often absorbs too much essence. The essence of the mask is difficult to squeeze out and recycle in some existing mask processing equipment, resulting in waste of essence. In addition, air bubbles are easily generated during the soaking process of the mask cloth, making it impossible for the essence to be evenly distributed on the surface of the mask cloth, which will affect the processing quality of the mask. (3) Most of the existing mask processing equipment is an integrated structure, and the relevant parts are difficult to disassemble. After the mask cloth is soaked for a long time, the surface of the relevant parts often has essence residue, which is not easy to clean, thus easily leading to cross-contamination, which in turn affects the subsequent mask processing. Therefore, in view of the above problems, the mask processing device provided by this utility model is of great significance. Utility Model Content

[0004] This invention provides a mask processing device. Multiple mask sheets can be placed in multiple impregnation tanks, allowing for simultaneous batch impregnation of multiple batches of mask sheets, effectively meeting the needs of large-scale mask production. An extrusion mechanism squeezes excess essence from the inside of the mask sheet and recycles it, avoiding waste. The extrusion block also flattens the mask sheet, eliminating air bubbles on its surface and preventing residual air bubbles from causing uneven distribution of essence, thus affecting the mask's processing quality. Through modular design, the impregnation components can be disassembled, allowing for the cleaning of residual essence from the surface of these components after prolonged impregnation, effectively preventing cross-contamination that could affect subsequent mask processing. In summary, this invention solves the problems in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a mask processing device, including a processing table. Several support legs are fixedly connected to the bottom of the processing table, and a bracket is fixedly connected to the top of the processing table. A cylinder is installed on the top of the bracket, and a lifting plate is fixedly connected to the bottom of the output shaft of the cylinder. An immersion mechanism is provided below the lifting plate, and a liquid storage tank is provided below the immersion mechanism. The liquid storage tank is placed on the processing table.

[0007] The impregnation mechanism includes an impregnation frame, an impregnation plate installed at the bottom of the impregnation frame, a plurality of impregnation tanks opened on the top surface of the impregnation plate, a seepage hole opened at the bottom of each impregnation tank, and a pair of locking blocks fixedly connected to the lower top surface of the impregnation frame. The locking blocks are L-shaped and a squeezing mechanism is provided between the locking blocks.

[0008] The extrusion mechanism includes a mounting frame, an electric telescopic rod is mounted on the bottom of the mounting frame, an extrusion plate is fixedly connected to the bottom end of the output shaft of the electric telescopic rod, and several extrusion blocks are fixedly connected to the bottom of the extrusion plate.

[0009] Furthermore, the impregnation tank is circular and is equidistantly linearly distributed along the length of the top surface of the impregnation plate, and each impregnation tank has a material extraction port on its side wall, the depth of which is greater than the depth of the impregnation tank.

[0010] Furthermore, a vibration motor is installed on the top of the impregnation rack, and several guide rods are fixedly connected to the top of the impregnation rack. The guide rods are symmetrically distributed on the left and right sides of the vibration motor, and protrusions are fixedly connected to their top ends. Each guide rod has a spring wound around its body. The top and bottom ends of the springs are fixedly connected to the bottom of the lifting plate and the top of the impregnation rack, respectively. The two sides of the lifting plate are L-shaped and have several guide holes. The number of guide holes is the same as the number of guide rods, and the diameter of the holes corresponds to the diameter of the guide rods. Each guide rod passes through the corresponding guide hole.

[0011] Furthermore, the extrusion blocks are circular, the number of which is the same as the impregnation tank, and the diameter is equal to the diameter of the impregnation tank. Each extrusion block is located directly above the corresponding impregnation tank.

[0012] Furthermore, several studs are fixedly connected to the top of both ends of the impregnation plate, and nuts that cooperate with the studs are threaded onto the studs. The bottom of both sides of the impregnation frame is L-shaped and has several mounting holes. The number of mounting holes is the same as that of the studs, and the diameter of the holes corresponds to the diameter of the studs. The center of each mounting hole corresponds one-to-one with the center of each stud.

[0013] Furthermore, the two sides of the mounting bracket are L-shaped, and their thickness is equal to the height of the inner wall of the card block, and the distance between the two ends of the mounting bracket is equal to the distance between the inner walls of the two card blocks.

[0014] Furthermore, the top surface of the processing table is provided with several positioning grooves, the liquid storage tank is located directly below the impregnation plate, and several positioning rods are fixedly connected to its bottom. The number of positioning rods is the same as the number of positioning grooves, and their diameters correspond to the diameters of the positioning grooves. The center of each positioning rod corresponds one-to-one with the center of each positioning groove.

[0015] The present invention has the following advantages over the prior art:

[0016] (1) When using the mask processing device of this utility model, multiple mask cloths can be placed in multiple impregnation tanks so that multiple batches of mask cloths can be impregnated at the same time, thereby effectively meeting the needs of large-scale mask production.

[0017] (2) When the mask processing device of this utility model is used, the excess essence can be squeezed out from the inside of the mask cloth and recycled by the squeezing mechanism to avoid waste. In addition, the mask cloth can be flattened by the squeezing block to remove air bubbles on the surface of the mask cloth, thereby effectively preventing residual air bubbles from causing the essence to be unevenly distributed on the surface of the mask cloth and affecting the processing quality of the mask.

[0018] (3) When using the mask processing device of this utility model, the relevant impregnation parts can be disassembled through modular design so that the essence residue on the surface of the relevant parts can be cleaned after the mask cloth has been impregnated for a long time, thereby effectively avoiding cross-contamination and affecting the subsequent mask processing.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a mask processing device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the processing table in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the impregnation rack in this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the impregnation plate in this utility model;

[0025] Figure 5 This is a top view of the impregnation plate in this utility model;

[0026] Figure 6 This is a schematic diagram of the pressurization mechanism in this utility model;

[0027] Figure 7 This is a schematic diagram of the liquid storage tank in this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Processing table; 2. Support leg; 3. Bracket; 4. Cylinder; 5. Lifting plate; 6. Liquid storage tank; 7. Impregnation rack; 8. Impregnation plate; 9. Impregnation tank; 10. Drainage hole; 11. Clamping block; 12. Mounting bracket; 13. Electric telescopic rod; 14. Extrusion plate; 15. Extrusion block; 16. Material outlet; 17. Vibration motor; 18. Guide rod; 19. Protrusion; 20. Spring; 21. Guide hole; 22. Stud; 23. Nut; 24. Mounting hole; 25. Positioning groove; 26. Positioning rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Please see Figure 1-7As shown, a mask processing device of this utility model includes a processing table 1, a plurality of support legs 2 fixedly connected to the bottom of the processing table 1, and a bracket 3 fixedly connected to the top of the processing table 1. A cylinder 4 is installed on the top of the bracket 3, and a lifting plate 5 is fixedly connected to the bottom end of the output shaft of the cylinder 4. An immersion mechanism is provided below the lifting plate 5, and a liquid storage tank 6 is provided below the immersion mechanism. The liquid storage tank 6 is placed on the processing table 1, and the liquid storage tank 6 stores the essence liquid required for mask processing.

[0033] The impregnation mechanism includes an impregnation frame 7, an impregnation plate 8 installed at the bottom of the impregnation frame 7, a number of impregnation tanks 9 are opened on the top surface of the impregnation plate 8, and a seepage hole 10 is opened at the bottom of each impregnation tank 9. A pair of locking blocks 11 are fixedly connected to the bottom surface of the impregnation frame 7. The locking blocks 11 are L-shaped and a squeezing mechanism is provided between the locking blocks 11.

[0034] The extrusion mechanism includes a mounting frame 12, an electric telescopic rod 13 is mounted on the bottom of the mounting frame 12, an extrusion plate 14 is fixedly connected to the bottom end of the output shaft of the electric telescopic rod 13, and several extrusion blocks 15 are fixedly connected to the bottom of the extrusion plate 14.

[0035] The impregnation tank 9 is circular and is equidistantly distributed along the length of the top surface of the impregnation plate 8. Each impregnation tank 9 has a material inlet 16 on its side wall. The depth of the material inlet 16 is greater than the depth of the impregnation tank 9. Each impregnation tank 9 can hold a mask sheet. The lifting plate 5, along with the impregnation frame 7 and the impregnation plate 8, can be moved downward by the driving cylinder 4. When the impregnation plate 8 extends into the liquid storage tank 6, the essence can seep into the impregnation tank 9 through the seepage holes 10 at the bottom of each impregnation tank 9 and come into contact with the bottom of the mask sheet. At the same time, the essence can also flow from the top of the impregnation plate 8 over the impregnation tank 9 and come into contact with the top of the mask sheet, so that multiple batches of mask sheets can be impregnated at the same time, thereby effectively meeting the needs of large-scale mask production. After impregnation is completed, the mask sheet stuck in each impregnation tank 9 can be quickly removed by inserting a finger into the material inlet 16.

[0036] The top of the impregnation frame 7 is equipped with a vibration motor 17, and several guide rods 18 are fixedly connected to the top of the impregnation frame 7. The guide rods 18 are symmetrically distributed on the left and right sides of the vibration motor 17, and their top ends are fixedly connected with protrusions 19. Each guide rod 18 has a spring 20 wound around its body. The top and bottom ends of the spring 20 are fixedly connected to the bottom of the lifting plate 5 and the top of the impregnation frame 7, respectively. The two sides of the lifting plate 5 are L-shaped and have several guide holes 21. The number of guide holes 21 is the same as that of the guide rods 18, and their diameters correspond to the diameters of the guide rods 18. Each guide rod 18 passes through the corresponding guide hole 21. When impregnating the mask cloth, the vibration motor 17 is driven to drive the impregnation frame 7 and the impregnation plate 8 to vibrate up and down together by means of the elasticity of the spring 20. This allows the mask cloth to fully contact the essence in the liquid storage tank 6, ensuring the uniform absorption of the essence and preventing the mask cloth from being too dry or too wet.

[0037] The extrusion blocks 15 are circular, and their number is the same as that of the impregnation tanks 9. Their diameters correspond to the diameters of the impregnation tanks 9, and each extrusion block 15 is located directly above its corresponding impregnation tank 9. After the mask fabric is impregnated, the cylinder 4 is driven to move the impregnation plate 8 upwards until it reaches above the liquid storage tank 6. At this point, the electric telescopic rod 13 is driven to move the extrusion plate 14 downwards, allowing each extrusion block 15 to align and extend into its corresponding impregnation tank 9. When the extrusion block 15 enters the impregnation tank 9 and is in contact with the mask fabric, it is ready to be inserted into the impregnation tank. When the mask sheet comes into contact with the mask, the pressure applied by the squeezing block 15 can squeeze the mask sheet to squeeze out excess essence from the inside of the mask sheet. The squeezed essence can flow back into the liquid storage tank 6 through each seepage hole 10, so that excess essence can be recycled to avoid waste. At the same time, the squeezing block 15 can also flatten the mask sheet to remove air bubbles on the surface of the mask sheet, so as to effectively prevent residual air bubbles from causing the essence to be unevenly distributed on the surface of the mask sheet and affecting the processing quality of the mask.

[0038] The impregnation plate 8 has several studs 22 fixedly connected to its top ends at both ends. Each stud 22 is threaded with a nut 23. The bottom ends of both sides of the impregnation frame 7 are L-shaped and have several mounting holes 24. The number of mounting holes 24 is the same as that of the studs 22, and their diameters correspond to the diameters of the studs 22. The center of each mounting hole 24 corresponds to the center of each stud 22. Each stud 22 can be aligned and passed through the corresponding mounting hole 24. The nut 23 is then threaded onto each stud 22 and tightened. The impregnation plate 8 can be fixedly installed at the bottom of the impregnation frame 7 through the cooperation between the studs 22, mounting holes 24, and nuts 23. After the mask sheet has been impregnated for a long time, the impregnation plate 8 can be removed from the impregnation frame 7 by unscrewing the nuts 23 to clean the residual essence on the impregnation plate 8, thereby effectively avoiding cross-contamination that could affect subsequent mask processing.

[0039] The mounting bracket 12 has L-shaped sides, and its thickness is equal to the height of the inner wall of the card block 11. The distance between the two ends of the mounting bracket 12 is equal to the distance between the inner walls of the two card blocks 11. The two ends of the mounting bracket 12 can be inserted into and fitted into the gap between the corresponding card block 11 and the lower top surface of the impregnation frame 7. Thus, the mounting bracket 12 together with the extrusion mechanism can be fixed to the lower top surface of the impregnation frame 7 by insertion. The mounting bracket 12 can be pulled out from between the card blocks 11 so that the entire extrusion mechanism can be removed from the impregnation frame 7 and the residual essence on the extrusion plate 14 and each extrusion block 15 can be cleaned.

[0040] The processing table 1 has several positioning slots 25 on its top surface. The liquid storage tank 6 is located directly below the impregnation plate 8. Several positioning rods 26 are fixedly connected to its bottom. The number of positioning rods 26 is the same as the number of positioning slots 25, and their diameters correspond to the diameters of the positioning slots 25. The center of each positioning rod 26 corresponds to the center of each positioning slot 25. When the liquid storage tank 6 is placed on the processing table 1, each positioning rod 26 can be aligned and inserted into the corresponding positioning slot 25. At this time, the mutual cooperation between the positioning rods 26 and the positioning slots 25 can play a positioning role to prevent the position of the liquid storage tank 6 from shifting, which would cause the impregnation plate 8 to fail to enter the liquid storage tank 6 accurately.

[0041] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0042] All standard parts used in the application documents can be purchased from the market. All components in this application documents can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

[0043] The working principle of this utility model is as follows:

[0044] In use, this invention allows multiple mask sheets to be placed into the corresponding impregnation tanks 9 at the top of the impregnation plate 8. Then, the cylinder 4 is driven to move the lifting plate 5, along with the impregnation frame 7 and the impregnation plate 8, downwards. When the impregnation plate 8 extends into the liquid storage tank 6, the essence stored in the liquid storage tank 6 can seep into the impregnation tank 9 through the seepage holes 10 at the bottom of each impregnation tank 9, contacting the bottom of the mask sheet. Simultaneously, the essence can also overflow from above the impregnation plate 8 into the impregnation tank 9, contacting the top of the mask sheet. This allows for simultaneous batch impregnation of multiple batches of mask sheets, thereby enabling... To effectively meet the needs of large-scale mask production, during the impregnation of the mask sheet, the vibration motor 17 drives the impregnation frame 7 and the impregnation plate 8 to vibrate up and down together via the elasticity of the spring 20. This ensures that the mask sheet can fully contact the essence in the liquid storage tank 6, guaranteeing even absorption of the essence and preventing the mask sheet from becoming too dry or too wet. After the mask sheet is impregnated, the cylinder 4 is driven to move the impregnation plate 8 upward until it is above the liquid storage tank 6. At this point, the electric telescopic rod 13 is driven to move the extrusion plate 14 downward, allowing each extrusion block to... The extrusion block 15 aligns with and extends into the corresponding impregnation tank 9. When the extrusion block 15 enters the impregnation tank 9 and comes into contact with the mask sheet, the pressure applied by the extrusion block 15 can squeeze the mask sheet to expel excess essence from the inside of the mask sheet. The extruded essence can flow back into the reservoir 6 through the various seepage holes 10, thereby recovering excess essence and avoiding waste. At the same time, the extrusion block 15 can also flatten the mask sheet to remove air bubbles on the surface of the mask sheet, thereby effectively preventing residual air bubbles from causing the essence to not be evenly distributed on the surface of the mask sheet. This process can affect the quality of the mask production. Afterwards, the mask sheet can be quickly removed from each impregnation tank 9 by inserting a finger into the feeding port 16. After the mask sheet has been impregnated for a long time, the impregnation plate 8 can be removed from the impregnation frame 7 by unscrewing the nut 23 to clean the residual essence on the impregnation plate 8. At the same time, the mounting frame 12 can be pulled out from between the clips 11 to remove the entire extrusion mechanism from the impregnation frame 7 and clean the residual essence on the extrusion plate 14 and each extrusion block 15, thereby effectively avoiding cross-contamination that could affect subsequent mask production.

[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A mask processing apparatus characterized by comprising: The machining table is provided with a plurality of supporting legs fixedly connected to the bottom of the machining table, and a support fixedly connected to the top of the machining table, wherein the top of the support is provided with a cylinder, the bottom end of the output shaft of the cylinder is fixedly connected with a lifting plate, the bottom of the lifting plate is provided with an impregnation mechanism, the bottom of the impregnation mechanism is provided with a liquid storage tank, and the liquid storage tank is placed on the machining table. The impregnation mechanism comprises an impregnation frame, the bottom of the impregnation frame is provided with an impregnation plate, the top surface of the impregnation plate is provided with a plurality of impregnation grooves, the bottom of each impregnation groove is provided with a liquid permeation hole, the lower top surface of the impregnation frame is fixedly connected with a pair of clamping blocks, the clamping blocks are L-shaped, and a pressing mechanism is arranged between the clamping blocks. The pressing mechanism comprises a mounting frame, the bottom of the mounting frame is provided with an electric telescopic rod, the bottom end of the output shaft of the electric telescopic rod is fixedly connected with a pressing plate, and the bottom of the pressing plate is fixedly connected with a plurality of pressing blocks.

2. The mask processing apparatus according to claim 1, wherein The impregnation grooves are circular and linearly distributed at equal intervals along the length direction of the top surface of the impregnation plate, and the sidewall of each impregnation groove is provided with a material taking opening, the depth of the material taking opening is greater than the depth of the impregnation groove.

3. The mask processing apparatus of claim 1, wherein The top of the impregnation frame is provided with a vibrating motor, and the top of the impregnation frame is fixedly connected with a plurality of guide rods, the guide rods are symmetrically arranged on the left and right sides of the vibrating motor, the top end of each guide rod is fixedly connected with a protrusion, and the rod body of each guide rod is wound with a spring, the top end and the bottom end of the spring are fixedly connected to the bottom of the lifting plate and the top of the impregnation frame respectively, the two sides of the lifting plate are L-shaped and provided with a plurality of guide holes, the number of the guide holes is the same as that of the guide rods, the hole diameter of the guide holes is equal to the diameter of the guide rods, and each guide rod penetrates through a corresponding guide hole.

4. The mask processing apparatus of claim 1, wherein The pressing blocks are circular, the number of the pressing blocks is the same as that of the impregnation grooves, the diameter of the pressing blocks is equal to the diameter of the impregnation grooves, and each pressing block is located directly above a corresponding impregnation groove.

5. The mask processing apparatus of claim 1, wherein The top of the impregnation plate is fixedly connected with a plurality of studs, the studs are threadedly connected with nuts matched therewith, the bottom of each side of the impregnation frame is L-shaped and provided with a plurality of mounting holes, the number of the mounting holes is the same as that of the studs, the hole diameter of the mounting holes is equal to the diameter of the studs, and the center of each mounting hole and the center of each stud are one-to-one corresponding.

6. The mask processing apparatus of claim 1, wherein The two sides of the mounting frame are L-shaped, the thickness of the mounting frame is equal to the height of the inner wall of the clamping block, and the distance between the two ends of the mounting frame is equal to the distance between the inner walls of the two clamping blocks.

7. The mask processing apparatus of claim 1, wherein The top surface of the machining table is provided with a plurality of positioning grooves, the liquid storage tank is located directly below the impregnation plate, the bottom of the liquid storage tank is fixedly connected with a plurality of positioning rods, the number of the positioning rods is the same as that of the positioning grooves, the diameter of the positioning rods is equal to the diameter of the positioning grooves, and the center of each positioning rod and the center of each positioning groove are one-to-one corresponding.

Citation Information

Patent Citations

  • Liquid soaking device for mask processing

    CN218691061U