A high-efficiency screen printing plate cleaning module

Abstract

The application relates to a high-efficiency screen printing plate cleaning module in the technical field of screen printing, which comprises a conveying module, a circulating assembly and a plurality of jetting modules, the circulating assembly comprises a water tank, a water pump and two spiral medicine feeding mechanisms, and one end of the water tank is provided with a residue discharging port in communication with the outside. The module simultaneously completes two working processes through the conveying chain belt and the limiting rods. The limiting rods at the upper end drive the limiting fixture and the screen plate to advance, and when the limiting rods at the lower end follow the circulating movement of the conveying chain belt, the paint residues floating in the water tank can be synchronously pushed to move to the residue discharging port, the floating residues are automatically collected and discharged, and a power-driven residue discharging mechanism does not need to be additionally arranged. Most of the large-particle floating residues are screened through the limiting rods, the loss of filter materials can be effectively reduced, and the frequency of shutdown cleaning and maintenance can be reduced; meanwhile, the spiral medicine feeding mechanisms are used for adding cleaning medicaments into the water tank, the medicaments can be uniformly added, the medicament concentration of the cleaning water can be kept stable, and the overall cleaning effect is improved.

Description

Technical Field

[0001] This invention relates to the field of screen printing technology, specifically to a high-efficiency screen printing stencil cleaning module. Background Technology

[0002] Screen printing is a type of stencil printing. Screen printing involves stretching silk, synthetic fiber, or metal mesh onto a frame and creating the screen using manual etching or photochemical methods. Modern screen printing technology utilizes photosensitive materials and photographic methods to create the screen, making the mesh openings in the image areas open while blocking the openings in the non-image areas. During printing, a squeegee forces ink through the mesh openings in the image areas onto the substrate, creating an image identical to the original artwork.

[0003] Currently, the conventional method for cleaning the screen printing frame after screen printing is to use cold water spraying. However, the different ink compositions and curing degrees on the screen frame can lead to incomplete or difficult cleaning, resulting in poor cleaning effects and requiring manual secondary cleaning. This increases labor costs, worker workload, and cleaning time, resulting in low cleaning efficiency. Therefore, the existing technology discloses a fully automatic screen printing screen cleaning machine with brush attachment (patent publication number CN116118350A). During operation, the screen frame is sent into the pre-wash chamber, a water pump pumps and compresses water, a heating mechanism heats the water, and then the hot water is sprayed onto the screen frame through a spray pipe. A motor drives a roller brush to rotate and clean the screen frame. An automatic conveyor belt moves the cleaning spray brush mechanism left and right for a specified distance, covering the entire screen frame during cleaning. After a specified cleaning time, the screen frame enters the post-wash chamber to repeat the cleaning steps of the pre-wash chamber for a secondary cleaning. This significantly improves the cleaning effect, shortens the cleaning time, and makes the cleaning process more efficient and faster.

[0004] The above structure still has certain drawbacks in practical applications: during the cleaning process, it requires a two-stage filtration system to separate the paint residue. However, the paint residue detached from the spray cleaning is mostly light scum that will continue to float on the surface of the water tank. Conventional bottom filtration structures require water to circulate through the filter media to trap the paint residue. After long-term use, the filter media is prone to clogging and requires frequent shutdowns for replacement and cleaning. In view of the above-mentioned drawbacks of the prior art, this invention provides a high-efficiency screen printing plate cleaning module that can automatically discharge paint residue and uniformly add chemicals. Summary of the Invention

[0005] This invention provides a high-efficiency cleaning module for screen printing stencils to solve the problems mentioned in the background art.

[0006] The objective of this invention is achieved through the following means: A high-efficiency screen printing plate cleaning module includes a conveying module, a circulation component, and several spraying modules, which are sequentially distributed on the conveying module. The conveying module includes a conveyor belt, several limiting rods evenly arranged on the conveyor belt, and a limiting fixture for supporting the screen printing plate. A gap is provided between adjacent limiting rods, and a positioning element that can be installed within the gap is provided at the lower end of the limiting fixture. The circulation component includes a water tank, a water pump, and at least two spiral chemical application mechanisms. The water tank is connected to the input end of the water pump via a filter box, and the output end of the water pump is connected to the spraying modules. The spiral chemical application mechanisms are located on the water tank, which is positioned at the lower end of the conveying module. Along the driving direction of the conveying module, one end of the water tank has a slag discharge port communicating with the outside. When the conveying module is driven, the limiting rods at the upper end of the conveyor belt drive the limiting fixtures towards the spraying modules, while the limiting rods at the lower end of the conveyor belt simultaneously push the floating paint slag in the water tank towards the slag discharge port.

[0007] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, the spraying module includes two spraying components disposed opposite to each other on both sides of the conveying module. Each spraying component includes a spraying panel and a support frame. The spraying panel is vertically and vertically mounted within the support frame via a lifter.

[0008] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, the spraying module further includes two limiting plates disposed opposite to each other on the spraying panel, forming a channel through which the screen printing stencil can pass. The limiting plates move up and down with the spraying panel, and the spraying panel is provided with a sleeve for installing the limiting plates, which can slide along the sleeve.

[0009] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, a brush module is provided between two adjacent spraying modules. The brush module includes two brush assemblies disposed opposite to each other on the conveying module. Each brush assembly includes a brush mechanism and a first motor. The brush mechanism is mounted on the first motor via a drive shaft.

[0010] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, the brush module further includes a guide rail and a moving component. The first motor is mounted on the moving component via a hinge mechanism, and the moving component is movably mounted on the guide rail.

[0011] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, the guide rail is an I-shaped steel rail, and a rack is provided at the lower end of the guide rail. The moving component includes a second motor and a pulley frame that can be slidably mounted on the guide rail. The second motor is mounted on the pulley frame and is provided with a gear for cooperating with the rack.

[0012] As a preferred solution for a high-efficiency cleaning module for screen printing stencils, a bearing platform is provided at the upper end of the limiting rod, and a pushing platform is provided on one side of the limiting rod along the driving direction of the conveying module. The bearing platform and the pushing platform are connected end to end to form an L-shaped structure.

[0013] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, the slag discharge port is composed of a first inclined section, a second inclined section, and a horizontal section along the driving direction of the conveying module.

[0014] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, the upper surface of the horizontal section is higher than the supporting platform in a direction perpendicular to the water tank.

[0015] As a preferred embodiment of a high-efficiency cleaning module for screen printing stencils, it also includes an air knife assembly, which is disposed at the end of the conveying module.

[0016] This module uses a conveyor belt to drive limit rods, simultaneously completing two working processes. The upper limit rod moves the limit fixture and screen forward, while the lower limit rod, following the conveyor belt's circular motion, synchronously pushes the floating paint sludge in the tank towards the discharge port, automatically collecting and discharging the sludge without requiring an additional power-driven sludge discharge mechanism. Furthermore, the limit rods screen most large particles of sludge, effectively reducing filter media wear, minimizing downtime for cleaning and maintenance, and reducing worker workload. Simultaneously, the module uses a spiral chemical feeding mechanism to add cleaning agents to the tank, ensuring uniform agent distribution and maintaining a stable agent concentration in the cleaning water, thus improving the overall cleaning effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-efficiency cleaning module for screen printing stencils according to the present invention; Figure 2 This is an internal schematic diagram of a high-efficiency cleaning module for screen printing stencils according to the present invention; Figure 3 This is a cross-sectional view of the conveying module in this invention; Figure 4 This is a schematic diagram of the operation of the conveying module in this invention; Figure 5 for Figure 4 Enlarged diagram of B in the diagram; Figure 6 This is a cross-sectional view of the slag discharge port in this invention; Figure 7 This is a first partial schematic diagram of a high-efficiency cleaning module for screen printing stencils according to the present invention; Figure 8 This is a second partial schematic diagram of a high-efficiency cleaning module for screen printing stencils according to the present invention; Figure 9 for Figure 8 Enlarged diagram of B in the diagram; Figure 10 This is a schematic diagram of the limiting fixture in this invention; Figure 11 This is a schematic diagram of the injection module in this invention; Figure 12 This is a top view of the injection module in this invention; Figure 13 This is a schematic diagram of the first structure of the spraying assembly in this invention; Figure 14 This is a schematic diagram of the second structure of the injection assembly in this invention; Figure 15 This is a schematic diagram of the brush module in this invention; Figure 16 This is the front view of the brush module in this invention.

[0018] The reference numerals in the diagram are as follows: 1-Conveying module, 10-Conveying chain, 11-Limiting rod, 111-Bearing platform, 112-Pushing platform, 12-Limiting fixture, 121-Base, 122-Clamping plate, 122-Screw, 123-Positioning component, 2-Spraying module, 20-Spraying panel, 21-Bearing frame, 22-Lifter, 23-Limiting plate, 24-Cylinder, 3-Air knife assembly, 4-Brush module, 40-Brush mechanism, 41-First motor, 42-Drive shaft, 43-Guide rail, 44-Hinge mechanism, 45-Rack and pinion, 46-Second motor, 47-Pulley frame, 5-Water tank, 50-Slag discharge port, 501-First inclined section, 502-Second inclined section, 503-Horizontal section, 6-Spiral feeding mechanism, 7-Moving slag bucket, 9-Screw screen. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 the present invention.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0024] In one embodiment of the present invention, such as Figure 1-16 As shown, a specific implementation of a high-efficiency screen printing plate cleaning module includes a conveying module 1, a circulation component, an air knife component 3, and several spraying modules 2, which are sequentially distributed on the conveying module 1.

[0025] The conveying module 1 includes a conveyor belt 10, a plurality of limiting rods 11 evenly arranged on the conveyor belt 10, and a limiting fixture 12 for carrying the screen printing plate 9. A gap is provided between two adjacent limiting rods 11, and a positioning member 123 that can be installed in the gap is provided at the lower end of the limiting fixture 12.

[0026] The circulation assembly includes a water tank 5, a water pump, and at least two spiral drug delivery mechanisms 6. The water tank 5 is connected to the input end of the water pump through a filter box (not shown), and the output end of the water pump is connected to the spray module 2. The spiral drug delivery mechanism 6 is disposed on the water tank 5, and the water tank 5 is disposed at the lower end of the conveying module 1.

[0027] like Figure 3-4As shown, along the driving direction of the conveying module 1, one end of the water tank 5 is provided with a slag discharge port 50 that communicates with the outside. When the conveying module 1 is driven, the limiting rod 11 at the upper end of the conveying chain 10 drives the limiting fixture 12 to move towards the spraying module 2, while the limiting rod 11 at the lower end of the conveying chain 10 simultaneously pushes the paint slag floating in the water tank 5 towards the slag discharge port 50.

[0028] This module uses a conveyor belt 10 to drive a limiting rod 11, simultaneously completing two working processes. The upper limiting rod 11 drives the limiting fixture 12 and the screen 9 forward, while the lower limiting rod 11, following the conveyor belt 10 in its circular motion, synchronously pushes the floating paint sludge in the water tank 5 towards the sludge discharge port 50, automatically collecting and discharging the sludge without the need for an additional power-driven sludge discharge mechanism. Furthermore, using the limiting rod 11 to screen most of the large particles of sludge effectively reduces filter media wear, decreases the frequency of downtime for cleaning and maintenance, and reduces the workload for workers. Simultaneously, this module adds cleaning agents to the water tank 5 through a spiral chemical feeding mechanism 6, ensuring uniform agent addition, maintaining a stable agent concentration in the cleaning water, and improving the overall cleaning effect.

[0029] In this embodiment, a movable slag bucket 7 is arranged at the lower end of the slag discharge port 50, which can be moved at any time to discharge the collected paint slag, making it convenient for regular centralized treatment. There is no need to excavate a separate slag discharge trench, making installation and maintenance more convenient.

[0030] like Figure 4-6 As shown, along the driving direction of the conveying module 1, the slag discharge port 50 is composed of a first inclined section 501, a second inclined section 502, and a horizontal section 503. In practical applications, the overall water level of the water tank 5 needs to be slightly lower than or equal to the height of the horizontal section 503. The vertical height of both ends of the second inclined section 502 needs to cover the floating thickness of the paint slag on the water surface. The first inclined section 501 is used to guide the limiting rod 11 and the paint slag, reducing the occurrence of slag clumps causing blockage.

[0031] Specifically, when the conveyor belt 10 drives the limit rod 11 to move to the lower end of the water tank 5 for return, the lower end of the bearing platform 111 on the limit rod 11 is usually lower than the lowest point of the second inclined section 502, thereby submerging the bearing platform 111 and the pushing platform 112 into the water, and ensuring that the height of the pushing platform 112 can cover the floating thickness of the paint slag on the water surface, ensuring that all the slag clumps floating on the water surface can be pushed by the pushing platform 112, and no slag clumps will be left behind after passing the pushing platform 112. All the accumulated slag clumps will move towards the slag discharge port 50 along the guidance of the first inclined section 501, and finally be discharged from the water tank 5 through the horizontal section 503 after passing through the second inclined section 502, automatically completing the slag cleaning and slag discharge operation. No manual intervention is required throughout the process, and the degree of automation is higher.

[0032] In the direction perpendicular to the water tank 5, the upper end surface of the horizontal section 503 is higher than the bearing platform 111. As the limiting rod 11 moves sequentially along the first inclined section 501 and the second inclined section 502 toward the horizontal section 503, the bearing platform 111 and the pushing platform 112 can not only scoop the paint residue out of the water, but also rely on the height limitation of the horizontal section 503 and the first inclined section 501 to form a tensioning effect on the conveyor belt 10, ensuring that the conveyor belt 10 always remains in a taut state.

[0033] The segmented inclined structure of the slag discharge port 50, combined with the pushing action of the limit rod 11, ensures thorough slag removal and optimizes drainage, making the automatic slag discharge process smoother and more controllable.

[0034] Furthermore, the pressure exerted by the carrying platform 111 and the pushing platform 112 on the horizontal section 503 and the first inclined section 501 also ensures that the limiting rod 11 stably drains the paint residue, preventing gaps between them. This prevents the residue clumps from leaking back into the water tank 5, resulting in lower moisture content in the discharged residue clumps, making subsequent cleaning easier and preventing secondary pollution. After the residue is discharged, the limiting rod 11 slides smoothly out of the horizontal section 503, and the conveyor belt 10 returns to the upper conveying position, continuously driving the next screen 9 to complete the cleaning process. At the same time, it continuously pushes the residue clumps out, ensuring that the water quality in the water tank 5 always meets the cleaning requirements and that the cleaning effect is not reduced due to the accumulation of ink residue.

[0035] like Figure 5-6 As shown, a bearing platform 111 is provided at the upper end of the limiting rod 11, and a pushing platform 112 is provided on one side of the limiting rod 11 along the driving direction of the conveying module 1. The bearing platform 111 and the pushing platform 112 are connected end to end to form an L-shaped structure.

[0036] Specifically, when the limiting rod 11 moves the limiting fixture 12 and the screen printing plate 9 on it, the larger bearing platform 111 can more stably support the limiting fixture 12, and the pushing platform 112, which is perpendicularly connected to the bearing platform 111, can stably abut against the side wall of the positioning part 123 of the limiting fixture 12, ensuring that the limiting fixture 12 will not shift during the conveying process, resulting in stronger conveying stability, avoiding the situation where the rinsing and brushing are not in place due to the offset of the screen printing plate 9, and ensuring the cleaning accuracy.

[0037] In addition, when the conveyor belt 10 drives the limit rod 11 to move to the lower end of the water tank 5 for return, the larger pushing platform 112 can more efficiently push the floating slag clumps on the water surface and push the slag clumps towards the slag discharge port 50, preventing the slag clumps from leaking out between the limit rods 11 during the pushing process, ensuring that the slag cleaning operation is continuous and smooth, and that no large slag clumps remain and accumulate inside the water tank 5, thus continuously maintaining the cleanliness of the water.

[0038] like Figure 7-10 As shown, the limiting fixture 12 includes a base 121 and a clamping plate 122. The lower end of the base 121 is provided with an L-shaped groove that can be mounted on the support platform 111. The middle part of the base 121 is provided with a positioning groove that can accommodate the screen printing plate 9. The clamping plate 122 is movably installed in the positioning groove by a screw 124. In practical applications, the limiting fixture 12 is clamped and fixed to one corner of the screen printing plate 9 by the base 121 and the clamping plate 122. Then, the limiting fixture 12 is placed on the support platform 111 between adjacent limiting rods 11 through the L-shaped groove. The L-shaped structure can fit perfectly into one end of the gap, preventing easy displacement and detachment during conveying and cleaning. After fixing, the screen printing plate 9 moves with the conveying module 1, and both sides can be washed and brushed by the spray module 2 and the brush module 4, without any blind spots, ensuring the integrity of the cleaning.

[0039] Furthermore, during installation, the bottom surface of the screen printing stencil 9 must be flush with the bottom surface of the positioning groove. This ensures that the lower end of the screen printing stencil 9 can be fully mounted on the support platform 111 of the limiting rod 11, preventing the stencil 9 from swaying and shifting during brushing or rinsing, thus ensuring the stability of the cleaning process. After fixing the screen printing stencil 9 to the limiting fixture 12, simply place the limiting fixture 12 in the gap between adjacent limiting rods 11. When the conveyor belt 10 rotates, it will automatically drive the stencil 9 through each cleaning process sequentially, achieving continuous batch cleaning operations. The cleaning efficiency is significantly improved compared to manual single-piece cleaning.

[0040] Specifically, the main function of the limiting fixture 12 is to connect and cooperate with the conveying module 1, so that screen printing plates 9 of different sizes can be quickly adapted and installed on the conveying module without the need to customize and replace special fixtures according to the size of the screen plate 9, or to make additional adjustments to the structure of the conveying module 1. This further improves the versatility of the device, adapts to the cleaning needs of screen plates 9 of multiple specifications and small batches, and is more in line with the actual production and use scenarios of small and medium-sized printing and processing enterprises.

[0041] When the limiting fixture 12 and the screen printing stencil 9 on it move into the module, they are typically restricted on both sides by two limiting plates 23 on the spraying panel 20. This prevents the stencil 9 from shifting left or right during transport, ensuring that the stencil 9 is always aligned with the spraying and brushing area, and further preventing the problem of incomplete cleaning of corners. The limiting plates 23 can be raised and lowered synchronously with the spraying panel 20, and the channel width can also be adjusted by the cylinder 24. Combined with the lifting cover, it can adapt to stencils 9 of different sizes and thicknesses. The entire process does not require manual positioning, resulting in a higher degree of automation.

[0042] like Figure 2As shown, in this embodiment, the conveying module 1 is provided with three spraying modules 2 in sequence. From front to back, the three spraying modules 2 spray liquid, circulating water and pure water respectively, and sequentially complete the three processing steps of applying medicine, cleaning, preliminary rinsing and final rinsing of the screen printing plate 9. It can clean and remove residual printing material in the pores of the screen plate 9 in layers, avoid clogging of the screen plate 9 and improve the cleanliness of the screen plate 9.

[0043] Two spiral feeding mechanisms 6 are used to deliver paint mist coagulant A and agent B, respectively. The two agents are evenly mixed under the natural tumbling and stirring of the water flow in the water tank 5. The mixed agents can agglomerate the residual ink and paint residue dissolved in the water into clumps, causing the clumps floating on the water surface to gradually increase in volume. Finally, they are continuously pushed by the limit rod 11 at the lower end of the conveyor belt 10, which rotates and returns, and move along the water tank 5 towards the slag discharge port 50. After reaching the slag discharge port 50, they are directly discharged without the need for manual periodic slag removal. This can maintain the cleanliness of the water in the water tank 5 for a long time and extend the replacement cycle of the cleaning water.

[0044] In this embodiment, the spiral dispensing mechanism 6 includes a third motor, a stirring screw 124, and a dosing hopper. The stirring screw 124 is horizontally arranged on one side of the water tank 5, and the dosing hopper is located outside the water tank 5 and communicates with the inner cavity of the stirring screw 124. One end of the stirring screw 124 has a leakage hole. When the third motor drives the stirring screw 124 to rotate, the agent can be evenly dispersed into the water in the water tank 5, while avoiding agent sedimentation and ensuring a stable concentration of detergent in the water.

[0045] like Figure 11-12 As shown, the spraying module 2 includes two spraying components arranged opposite to each other on both sides of the conveying module 1. The two spraying components are respectively aligned with the two sides of the screen printing plate 9 and simultaneously wash the front and back sides of the screen printing plate 9, which can quickly remove residual ink on the screen plate 9 and improve cleaning efficiency.

[0046] like Figure 13-14 As shown, the spraying assembly includes a spraying panel 20 and a support frame 21. The spraying panel 20 is vertically and vertically mounted in the support frame 21 via a lifter 22.

[0047] The spray panel 20 is alternately arranged with liquid spray pipes and water spray pipes. Each liquid spray pipe and water spray pipe is provided with multiple nozzles arranged at intervals. In order to avoid the spray range of the nozzles not being able to fully cover the screen printing plate 9, in this embodiment, the spray panel 20 is moved up and down by the lifting device 22, so that the nozzles form staggered spray areas on the surface of the screen plate 9. This ensures that the cleaning pressure is sufficient and can fully cover all areas of the screen plate 9, leaving no residual ink on the edges and corners, and further improving the cleanliness of the cleaning.

[0048] The cleaning solution spray nozzle first sprays water mixed with cleaning agent onto screen 9 to soften and dissolve residual ink. A subsequent clean water spray nozzle then washes away the softened and peeled ink residue from screen 9, ensuring a seamless cleaning process and better cleaning results. Specifically, a water-based, environmentally friendly cleaning agent is preferred.

[0049] The lifting device 22 includes a fourth motor, which is fixed on the outside of the support frame 21. The output end of the fourth motor is connected to a vertically arranged drive screw. The drive screw is rotatably installed inside the support frame 21 through a rotating seat. A connecting block is fixedly connected to the side of the spray panel 20. The connecting block is threadedly connected to the drive screw. When the fourth motor rotates, it can drive the spray panel 20 to rise and fall in the vertical direction, so as to achieve full coverage cleaning of the screen 9 surface.

[0050] The spraying module 2 also includes two limiting plates 23 disposed opposite to each other on the spraying panel 20, forming a channel between the two limiting plates 23 through which the screen printing stencil 9 can pass. The limiting plates 23 move up and down with the spraying panel 20. The spraying panel 20 is provided with a sleeve for mounting the limiting plates 23, and the limiting plates 23 can slide along the sleeve. The spraying panel 20 is also provided with a cylinder 24 for pushing the limiting plates 23 to move along the sleeve. When encountering screen printing stencils 9 of different thicknesses, the cylinder 24 can push the limiting plates 23 inward, thereby narrowing the width of the channel to accommodate the passage requirements of screen printing stencils 9 of different thicknesses.

[0051] To ensure that the screen printing stencil 9 passes smoothly through the channel, this embodiment arranges multiple sets of limiting plates 23 from top to bottom on the spray panel 20 to achieve a multi-point limiting effect and prevent the screen printing stencil 9 from tipping over.

[0052] like Figure 2 , Figure 15-16 As shown, a brush module 4 is provided between two adjacent spray modules 2. The brush module 4 includes two brush assemblies arranged opposite each other on the conveying module 1. Each brush assembly includes a brush mechanism 40 and a first motor 41. The brush mechanism 40 is mounted on the first motor 41 via a drive shaft 42. Specifically, the first motor 41 can drive the brush mechanism 40 to rotate. The two oppositely arranged brush mechanisms 40 are respectively attached to the front and back sides of the screen printing plate 9. The rotating brushes brush away the softened ink residue, further removing stubborn ink clumps embedded in the mesh, improving the cleanliness of the screen plate 9 after cleaning, and allowing the screen plate 9 to be directly reused. The brush module 4, in conjunction with the front-end spray rinsing, can realize continuous rinsing and brushing operations, eliminating the need for manual brushing, improving the degree of automation, and further improving the overall cleaning efficiency.

[0053] The brush module 4 also includes a guide rail 43 and a moving component. The first motor 41 is mounted on the moving component via a hinge mechanism 44, and the moving component is movably mounted on the guide rail 43. The moving component can adjust its position along the guide rail 43, thereby driving the brush mechanism 40 to move synchronously. This allows the brush to adjust its brushing position according to different sizes of screen printing stencils 9, ensuring that the brush always adheres to the surface of the stencil 9, adapting to the cleaning needs of different specifications of stencils 9, and improving the versatility of the device. When the brush wears down after long-term use, the extension position of the brush can also be adjusted by the moving component to compensate for the looseness caused by wear, extend the service life of the brush, and reduce maintenance costs.

[0054] The guide rail 43 is an I-shaped steel rail, and a rack 45 is provided at the lower end of the guide rail 43. The moving component includes a second motor 46 and a pulley frame 47 that can be slidably mounted on the guide rail 43. The second motor 46 is mounted on the pulley frame 47 and is provided with a gear for cooperating with the rack 45. When the second motor 46 rotates, the gear meshes and transmits along the rack 45, which can drive the pulley frame 47 to move smoothly along the guide rail 43, thereby completing the position adjustment of the brush mechanism 40. The transmission is stable and the positioning accuracy is high, which makes it convenient to accurately adjust the degree of brush contact.

[0055] The air knife assembly 3 is located at the end of the last spray module 2. The air knife assembly 3 includes two high-pressure air knives arranged opposite each other. The two high-pressure air knives are respectively aimed at the front and back of the cleaned screen printing plate 9. After high-pressure air is introduced, the water droplets remaining on the surface of the screen plate 9 can be quickly blown away, and the screen plate 9 can be dried at the same time, completing the drying process after cleaning. This allows the screen plate 9 to be directly put into use again after being taken out, without the need for additional drying, reducing the process flow time and further improving the overall work efficiency.

[0056] This device uses a conveyor module 1 to drive the screen 9 through spray cleaning, brush washing, and air knife drying in sequence. The entire process is automated and continuous. Combined with an automatic slag discharge and cleaning water circulation structure, it reduces the intensity of manual operation, extends the service life of cleaning water, reduces water consumption and chemical consumption, and has a lower overall operating cost. The cleaning efficiency and cleanliness are significantly improved compared to traditional cleaning methods.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A high-efficiency cleaning module for screen printing stencils, characterized in that, It includes a conveying module (1), a circulation component and several injection modules (2), with the injection modules (2) distributed sequentially on the conveying module (1); The conveying module (1) includes a conveyor belt (10), a plurality of limiting rods (11) evenly arranged on the conveyor belt (10), and a limiting fixture (12) for carrying the screen printing plate. A gap is provided between two adjacent limiting rods (11), and a positioning element (123) that can be installed in the gap is provided at the lower end of the limiting fixture (12). The circulation component includes a water tank (5), a water pump, and at least two spiral drug delivery mechanisms (6). The water tank (5) is connected to the input end of the water pump through a filter box, and the output end of the water pump is connected to the spray module (2). The spiral drug delivery mechanism (6) is located on the water tank (5), and the water tank (5) is located at the lower end of the conveying module (1). Along the driving direction of the conveying module (1), one end of the water tank (5) is provided with a slag discharge port (50) that communicates with the outside. When the conveying module (1) is driven, the limiting rod (11) at the upper end of the conveying chain (10) drives the limiting fixture (12) to move toward the spraying module (2), and the limiting rod (11) at the lower end of the conveying chain (10) simultaneously pushes the paint sludge floating in the water tank (5) toward the sludge discharge port (50).

2. The high-efficiency cleaning module for screen printing stencils according to claim 1, characterized in that: The spray module (2) includes two spray components arranged opposite to each other on both sides of the conveying module (1). The spray components include a spray panel (20) and a support frame (21). The spray panel (20) is installed in the support frame (21) in a way that can be raised and lowered by a lifter (22).

3. The high-efficiency cleaning module for screen printing stencils according to claim 2, characterized in that: The spraying module (2) also includes two limiting plates (23) disposed opposite to each other on the spraying panel (20). A channel for the screen printing plate to pass through is formed between the two limiting plates (23). The limiting plates (23) move up and down with the spraying panel (20). A sleeve for installing the limiting plates (23) is provided on the spraying panel (20). The limiting plates (23) can slide along the sleeve.

4. The high-efficiency cleaning module for screen printing stencils according to claim 2, characterized in that, A brush module (4) is provided between two adjacent spraying modules (2). The brush module (4) includes two brush assemblies arranged opposite to each other on the conveying module (1). The brush assembly includes a brush mechanism (40) and a first motor (41). The brush mechanism (40) is mounted on the first motor (41) via a drive shaft (42).

5. The high-efficiency cleaning module for screen printing stencils according to claim 4, characterized in that: The brush module (4) also includes a guide rail (43) and a moving component. The first motor (41) is mounted on the moving component via a hinge mechanism (44). The moving component is movably mounted on the guide rail (43).

6. The high-efficiency cleaning module for screen printing stencils according to claim 5, characterized in that: The guide rail (43) is an I-shaped steel rail, and a rack (45) is provided at the lower end of the guide rail (43). The moving component includes a second motor (46) and a pulley frame (47) that can be slidably mounted on the guide rail (43). The second motor (46) is mounted on the pulley frame (47), and a gear for cooperating with the rack (45) is provided on the second motor (46).

7. The high-efficiency cleaning module for screen printing stencils according to claim 1, characterized in that: The upper end of the limiting rod (11) is provided with a bearing platform (111). Along the driving direction of the conveying module (1), a pushing platform (112) is provided on one side of the limiting rod (11). The bearing platform (111) and the pushing platform (112) are connected end to end to form an L-shaped structure.

8. The high-efficiency cleaning module for screen printing stencils according to claim 7, characterized in that, Along the driving direction of the conveying module (1), the slag discharge port (50) is composed of a first inclined section (501), a second inclined section (502) and a horizontal section (503).

9. The high-efficiency cleaning module for screen printing stencils according to claim 8, characterized in that, In a direction perpendicular to the water tank (5), the upper surface of the horizontal section (503) is higher than the bearing platform (111).

10. The high-efficiency cleaning module for screen printing stencils according to claim 1, characterized in that, It also includes an air knife assembly (3), which is located at the end of the conveying module (1).

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