Printing net rack

Abstract

The utility model relates to a printing net rack which comprises a workbench, the upper end of the workbench is provided with a screen printing plate used for printing, the screen printing plate is parallel to the workbench, the two sides of the screen printing plate are provided with two sets of clamping assemblies used for clamping the screen printing plate, and the two sets of clamping assemblies are symmetrically arranged on the two sides of the screen printing plate. The upper end of each set of clamping assembly is provided with a plurality of pressing assemblies used for pressing the screen printing plate, the pressing assemblies are rotationally installed on the clamping assemblies, the rear ends of the clamping assemblies are provided with a horizontally-arranged supporting plate, the clamping assemblies are installed on the supporting plate and slide in the horizontal direction of the supporting plate, and the back face of the supporting plate is fixedly connected with a sliding base. Sliding rails are arranged at the two ends of the sliding base and perpendicularly installed on the workbench, a cross beam is arranged on the upper end faces of the two sliding rails in a crossing mode, and an air cylinder driving the sliding base to slide up and down is installed at the upper end of the cross beam. Screen printing plates of different specifications are clamped and fixed through the clamping assembly and the pressing assembly, adjustment is convenient, applicability is high, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to a printing screen frame. Background Technology

[0002] Screen printing refers to the process of creating a screen printing plate with images and text using a photosensitive method. Screen printing consists of five main elements: the screen printing plate, the squeegee, the ink, the printing table, and the substrate. It utilizes the basic principle that ink can pass through the mesh openings of the screen printing plate where the image areas are open, but not where ink can pass through. During printing, the screen printing plate is fixed to the screen frame using a fixed structure, with the frame and screen connected by bolts or welding. This structure has the following drawbacks: when changing to different screen sizes or adjusting the printing position, bolts need to be removed or welding is required, which is cumbersome and inefficient. The fixed screen frame structure can only accommodate specific screen frame sizes, failing to meet diverse printing needs. Traditional screen frame structures are prone to vibration during printing, affecting print quality.

[0003] Therefore, a printing frame needs to be developed to address the aforementioned shortcomings. Utility Model Content

[0004] The purpose of this utility model is to provide a printing screen frame that uses clamping and pressing components to clamp and fix screen printing plates of different specifications, which is easy to adjust, highly applicable, and easy to operate.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses a printing screen frame, including a workbench. A screen printing plate for printing is mounted on the upper end of the workbench, and the screen printing plate is arranged parallel to the workbench. Clamping components for holding the screen printing plate are provided on both sides of the screen printing plate. Two sets of clamping components are symmetrically arranged on both sides of the screen printing plate. Each set of clamping components has several pressing components at its upper end for pressing the screen printing plate tightly. The pressing components are rotatably mounted on the clamping components. A support plate is provided at the rear end of each clamping component. The support plate is horizontally arranged. The two sets of clamping components are mounted on the support plate and move relative to or towards each other along the horizontal direction of the support plate. A slide block is fixedly connected to the back of the support plate. Slide rails are provided at both ends of the slide block. Two slide rails are vertically mounted on the workbench. A crossbeam spans the upper end of the two slide rails. A cylinder for driving the slide block to slide up and down is mounted on the upper end of the crossbeam. The output end of the cylinder passes through the crossbeam and is fixed to the slide block.

[0007] Preferably, the clamping assembly includes a vertical plate and a mounting bracket. The vertical plate and the mounting bracket are vertically arranged and form an L-shape. The mounting bracket is fixedly installed at the bottom end of the vertical plate. The vertical plate is vertically installed on the support plate. A T-shaped step is provided at the rear end of the vertical plate. The T-shaped step is fitted into the support plate. A horizontal groove is provided in the support plate. The T-shaped step slides in the groove. A bidirectional screw is provided in the groove. Both ends of the bidirectional screw are rotatably installed at both ends of the support plate. One end of the bidirectional screw extends out of the support plate and is fixedly connected to a first motor. The first motor is horizontally fixed to the side of the support plate. The vertical plate is fitted onto the bidirectional screw and threadedly connected to the bidirectional screw.

[0008] Preferably, the clamping assembly further includes a clamping plate, which is slidably mounted on the mounting frame. The clamping plate is perpendicular to the mounting frame. The mounting frame has a longitudinal guide groove on its inner side. One side of the clamping plate is slidably mounted in the guide groove. The rear end of the clamping plate is provided with a telescopic rod. The telescopic rod is fixed to the rear end of the upright plate on the side away from the mounting frame. The telescopic end of the telescopic rod passes through the upright plate and is fixedly mounted on the clamping plate. The telescopic rod drives the clamping plate to slide along the guide groove. The front end of the clamping plate abuts against the outer side of the screen printing plate.

[0009] Preferably, the mounting frame has an L-shaped structure, with a mounting platform extending from the lower inner side of the mounting frame. The bottom surface of the mounting platform is consistent with the bottom surface of the mounting frame, and the upper surface of the mounting platform is lower than the upper surface of the mounting frame. The bottom surface of the clamping plate is slidably mounted on the mounting platform. The guide groove is provided on the side of the upper end of the mounting platform, and a limiting plate for limiting the front end of the screen printing plate is vertically provided at the front end of the mounting platform.

[0010] Preferably, the screen printing plate includes a screen frame and a screen, the screen is fixedly installed inside the screen frame, the outer side of the screen frame is provided with a stepped surface, the stepped surface of the screen frame is correspondingly provided with the mounting platform, the stepped surface of the screen frame is placed on the mounting platform, and the front end of the screen frame abuts against the inner side of the limiting plate.

[0011] Preferably, the clamping assembly includes a pressing rod, a rotating plate, a floating shaft, a worm gear, a worm, and a second motor. The rotating shaft is rotatably mounted within the mounting frame. A floating shaft is provided inside the rotating shaft. An arc-shaped groove is provided on the outer side of the rotating shaft, and a guide post is provided within the arc-shaped groove. The guide post is horizontally fixed to the outer side of the floating shaft. A worm gear is provided at the lower end of the rotating shaft and is fixedly mounted on the rotating shaft. A worm is provided on one side of the worm gear and meshes with the worm gear. Both ends of the worm are rotatably mounted on both sides of the mounting frame. One end of the worm extends out of the vertical plate and is fixedly connected to the second motor. The second motor is horizontally fixed to the rear end of the vertical plate. A rotating plate is fixedly mounted on the top surface of the floating shaft. A pressing rod is provided at the front end of the rotating plate and is vertically mounted at the front end of the rotating plate. The pressing rod is located at the upper end of the screen printing plate.

[0012] Preferably, the bottom surface of the wire frame is lower than the bottom surface of the mounting bracket.

[0013] Preferably, the pressing rod includes a threaded rod and a pressing head. The threaded rod passes through the rotating plate, and a plurality of nuts are threadedly connected to the threaded rod. The nuts are respectively disposed on the upper and lower sides of the rotating plate. The lower end of the threaded rod is fixedly connected to the pressing head, and the lower end face of the pressing head abuts against the upper end face of the mesh frame.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This utility model relates to a printing screen frame. A clamping assembly allows for the holding of screen frames of different specifications. The upright plates of the clamping assembly move relative to or towards each other under the action of bidirectional screws, ensuring the screen printing plate remains centered with the base plate. A clamping plate at the rear of the mounting frame secures the screen printing plate to the front of the worktable, closer to the operator, for convenient operation. A pressing assembly on the mounting frame allows for easy rotation and pressing of the screen printing plate, simplifying operation and facilitating easy disassembly and replacement, thus improving work efficiency. A slide rail at the rear of the worktable allows for easy adjustment of the screen printing plate height, meeting various printing needs. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the printing screen frame of this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the printing screen frame of this utility model;

[0019] Figure 3This is a top view of the printing screen frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping component;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the clamping component.

[0022] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. Screen printing plate; 201. Frame; 202. Screen; 3. Clamping assembly; 301. Vertical plate; 302. Mounting bracket; 3021. Guide groove; 3022. Mounting platform; 3023. Limiting plate; 303. Bidirectional screw; 304. First motor; 305. Clamping plate; 306. Telescopic rod; 4. Pressing assembly; 401. Pressing rod; 4011. Threaded rod; 4012. Pressing head; 4013. Nut; 402. Rotating plate; 403. Floating shaft; 404. Rotating shaft; 405. Worm gear; 406. Worm; 407. Second motor; 408. Guide post; 409. Arc groove; 5. Support plate; 6. Slide seat; 7. Slide rail; 8. Crossbeam; 9. Cylinder. Detailed Implementation

[0023] The core of this utility model is to provide a printing screen frame. The purpose of this utility model is to provide a printing screen frame that can clamp and fix screen printing plates of different specifications through clamping components and pressing components, which is convenient to adjust, highly applicable, and easy to operate.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., 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.

[0026] Refer to the attached diagram. Figure 1 This is a schematic diagram of the three-dimensional structure of the printing screen frame of this utility model; Figure 2 This is a schematic diagram of the main structure of the printing screen frame of this utility model; Figure 3 This is a top view of the printing screen frame structure of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping component; Figure 5 This is a schematic diagram of the three-dimensional structure of the clamping component.

[0027] In one specific implementation, such as Figures 1-5 As shown, a printing screen frame includes a worktable 1. A screen printing plate 2 for printing is provided on the upper end of the worktable 1, and the screen printing plate 2 is arranged parallel to the worktable 1. Clamping components 3 for holding the screen printing plate 2 are provided on both sides of the screen printing plate 2. Two sets of clamping components 3 are symmetrically arranged on both sides of the screen printing plate 2. Each set of clamping components 3 has several pressing components 4 at its upper end for pressing the screen printing plate 2. The pressing components 4 are rotatably mounted on the clamping components 3. A support plate 5 is provided at the rear end of the clamping components 3. The support plate 5 is horizontally arranged. The two sets of clamping components 3 are mounted on the support plate 5 and move relative to or towards each other along the horizontal direction of the support plate 5. A slide block 6 is fixedly connected to the back of the support plate 5. Slide rails 7 are provided at both ends of the slide block 6. The two slide rails 7 are vertically mounted on the worktable 1. A crossbeam 8 spans the upper end of the two slide rails 7. A cylinder 9 for driving the slide block 6 to slide up and down is installed at the upper end of the crossbeam 8. The output end of the cylinder 9 passes through the crossbeam 8 and is fixed to the slide block 6.

[0028] When cylinder 9 is activated, it will drive slide 6 to slide up and down along slide rail 7. The support plate 5 installed at the front end of slide 6 will slide up and down under the drive of slide 6, so as to facilitate the adjustment of the distance between screen printing plate 2 and substrate according to the thickness of substrate.

[0029] In one specific implementation, such as Figures 1-5 As shown, the clamping assembly 3 includes a vertical plate 301 and a mounting bracket 302. The vertical plate 301 and the mounting bracket 302 are vertically arranged and form an L-shape. The mounting bracket 302 is fixedly installed at the bottom end of the vertical plate 301. The vertical plate 301 is vertically installed on the support plate 5. The rear end of the vertical plate 301 is provided with a T-shaped step, which is fitted into the support plate 5. The support plate 5 is provided with a horizontal sliding groove, in which the T-shaped step slides. A bidirectional screw 303 is installed in the sliding groove. Both ends of the bidirectional screw 303 are rotatably installed at both ends of the support plate 5. One end of the bidirectional screw 303 extends out of the support plate 5 and is fixedly connected to a first motor 304. The first motor 304 is horizontally fixed to the side of the support plate 5. The vertical plate 301 is fitted onto the bidirectional screw 303 and is threadedly connected to the bidirectional screw 303.

[0030] The bidirectional threaded rod 4011 has a forward thread on one side and a reverse thread on the other, with the forward and reverse threads symmetrically arranged. This drives the vertical plates 301 installed on both sides of the bidirectional screw 303 to move relative to or towards each other. The distance between the two vertical plates 301 can be quickly adjusted according to the width of the screen printing plate 2.

[0031] In one specific implementation, such as Figures 1-5As shown, the clamping assembly 3 also includes a clamping plate 305, which is slidably mounted on the mounting frame 302. The clamping plate 305 is perpendicular to the mounting frame 302. The mounting frame 302 has a longitudinally arranged guide groove 3021 on its inner side. One side of the clamping plate 305 is slidably mounted in the guide groove 3021. A telescopic rod 306 is provided at the rear end of the clamping plate 305. The telescopic rod 306 is fixed to the rear end of the upright plate 301 on the side away from the mounting frame 302. The telescopic end of the telescopic rod 306 passes through the upright plate 301 and is fixedly mounted on the clamping plate 305. The telescopic rod 306 drives the clamping plate 305 to slide along the guide groove 3021. The front end of the clamping plate 305 abuts against the outer side of the screen printing plate 2. In one specific embodiment, as shown... Figures 1-5 As shown, the mounting bracket 302 has an L-shaped structure. A mounting platform 3022 extends from the lower inner end of the mounting bracket 302. The bottom surface of the mounting platform 3022 is flush with the bottom surface of the mounting bracket 302, while the upper surface of the mounting platform 3022 is lower than the upper surface of the mounting bracket 302. The bottom surface of the clamping plate 305 is slidably mounted on the mounting platform 3022. A guide groove 3021 is provided on the side of the upper end of the mounting platform 3022. A limiting plate 3023 is vertically mounted on the mounting platform 3022, located at the front end of the mounting platform 3022. This design allows for simple and quick installation of the screen printing plate 2, as the limiting plate 3023 quickly limits the front and rear positions of the screen printing plate 2.

[0032] In one specific implementation, such as Figures 1-5 As shown, the screen printing plate 2 includes a frame 201 and a screen 202. The screen 202 is fixedly installed inside the frame 201. The outer side of the frame 201 has a stepped surface, which corresponds to the mounting table 3022. The stepped surface of the frame 201 rests on the mounting table 3022, and the front end of the frame 201 abuts against the inner side of the limiting plate 3023. This limits the front end of the screen printing plate 2, preventing it from moving away from the worktable 1 and affecting the operator's work. Limiting the front end fixes the position of the screen printing plate 2, avoiding multiple adjustments to its position that could affect printing quality.

[0033] In one specific implementation, such as Figures 1-5As shown, the clamping assembly 4 includes a pressing rod 401, a rotating plate 402, a floating shaft 403, a rotating shaft 404, a worm gear 405, a worm 406, and a second motor 407. The rotating shaft 404 is rotatably mounted within the mounting bracket 302. The floating shaft 403 is located within the rotating shaft 404. An arc-shaped groove 409 is provided on the outer side of the rotating shaft 404, and a guide post 408 is located within the arc-shaped groove 409. The guide post 408 is horizontally fixed to the outer surface of the floating shaft 403. A worm gear 405 is located at the lower end of the rotating shaft 404 and is fixedly mounted on the rotating shaft 404. A worm 406 is located on one side of the worm gear 405. The worm 406 and the worm gear 405... The worm gear 406 is rotatably mounted on both sides of the mounting bracket 302. One end of the worm gear 406 extends out of the vertical plate 301 and is fixedly connected to the second motor 407. The second motor 407 is horizontally fixed to the rear end of the vertical plate 301. A rotating plate 402 is fixedly mounted on the top surface of the floating shaft 403. A pressing rod 401 is provided at the front end of the rotating plate 402. The pressing rod 401 is vertically mounted at the front end of the rotating plate 402 and is located at the upper end of the screen printing plate 2.

[0034] Specifically, three clamping components 4 are preferably installed on one side of the mounting bracket 302 to clamp the screen printing plate 2. Each clamping component 4 has a worm gear 405 and a worm 406 at its lower end. The worm gears 406 are all located on one side and fixedly connected together, rotating under the drive of the second motor 407, causing one worm gear 406 to drive the three worm gears 405 to rotate. When the worm gears 405 rotate, the rotating shaft 404 installed inside the worm gears 405 rotates under the drive of the worm gears 405. The guide post 408 slides along the arc-shaped groove 409 on the outer side of the rotating shaft 404, and the floating shaft 403 rotates upwards under the drive of the guide post 408. The pressing rod 401 moves downwards and rotates inwards to clamp the screen printing plate 2, and moves upwards and rotates outwards to release the screen printing plate 2.

[0035] In one specific implementation, such as Figures 1-5 As shown, the bottom surface of the screen frame 201 is lower than the bottom surface of the mounting bracket 302. This is to prevent the bottom surface of the mounting bracket 302 from touching the worktable 1 during printing, which would cause a gap between the screen printing plate 2 and the substrate, affecting the printing quality.

[0036] In one specific implementation, such as Figures 1-5 As shown, the pressing rod 401 includes a threaded rod 4011 and a pressing head 4012. The threaded rod 4011 passes through the rotating plate 402. Several nuts 4013 are threadedly connected to the threaded rod 4011. The nuts 4013 are respectively arranged on the upper and lower sides of the rotating plate 402. The pressing head 4012 is fixedly connected to the lower end of the threaded rod 4011. The lower end face of the pressing head 4012 abuts against the upper end face of the mesh frame 201.

[0037] The pressing head 4012 is made of rubber to avoid damaging the upper surface of the mesh frame 201 when pressing. The threaded rod 4011 passes through the upper and lower ends of the rotating plate 402, and there are nuts 4013 at both ends to fix the pressing rod 401 to the rotating plate 402. The height of the pressing head 4012 to the mesh frame 201 can be adjusted by adjusting the distance of the nuts 4013.

[0038] The operation process of this utility model's printing screen frame is as follows: The screen printing plate 2 used for printing is placed on the mounting platform 3022 inside the mounting frame 302. The front end of the outer frame 201 of the screen printing plate 2 abuts against the inner side of the limiting plate 3023 on the mounting platform 3022. Since the screen printing plates 2 are of different sizes, the first motor 304 is started. The first motor 304 drives the bidirectional screw 303 to work, causing the upright plates 301 mounted on the bidirectional screw 303 to move relative to or towards each other until the screen printing plate 2 is clamped between the mounting frames 302. The telescopic rod 306 is started, and the telescopic rod 306 drives the clamping plate 305 to move forward, so that the front end of the clamping plate 305 abuts against the rear side of the screen printing plate 2, thus stably clamping the four corners of the screen printing plate 2. The second motor 407 is started, driving the worm gear 406 to rotate. The worm gear 406 meshes with the worm wheel 405, which rotates under the action of the worm gear 406. The rotating shaft 404, fixedly mounted on the axial direction of the worm wheel 405, rotates under the drive of the worm wheel 405. An arc-shaped groove 409 is provided on the outer side of the rotating shaft 404, and the floating shaft 403 rotates along the direction of the arc-shaped groove 409. A rotating plate 402 is provided at the upper end of the floating shaft 403, and a pressing rod 401 is provided at the front end of the rotating plate 402. Under the drive of the floating shaft 403, the front end of the pressing rod 401 abuts against the upper end of the screen frame 201 to prevent the screen printing plate 2 from twisting during operation. The cylinder 9 is started, which drives the clamping assembly 3 and the screen printing plate 2 to move downward, so that the screen printing plate 2 can print on the substrate on the worktable 1. When replacing the screen printing plate 2, activate cylinder 9 to detach the screen printing plate 2 from the substrate. Then, activate the second motor 407, which drives the worm gear 406 and worm wheel 405, causing the pressing rod 401 to move upwards and rotate, disengaging from the screen printing plate 2. Activate clamping plate 305 to release the rear end of the screen printing plate 2. Finally, activate the first motor 304, which drives the upright plate 301 outwards, causing the mounting bracket 302 to release the screen printing plate 2, allowing it to be removed.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A printing screen frame, comprising a worktable (1), characterized in that: The upper end of the workbench (1) is provided with a screen printing plate (2) for printing. The screen printing plate (2) is arranged parallel to the workbench (1). The screen printing plate (2) is provided with clamping components (3) on both sides for clamping the screen printing plate (2). There are two sets of clamping components (3) symmetrically arranged on both sides of the screen printing plate (2). Each set of clamping components (3) is provided with several pressing components (4) for pressing the screen printing plate (2) tightly. The pressing components (4) are rotatably mounted on the clamping components (3). The rear end of the clamping components (3) is provided with a support plate (5). (5) Horizontally set, two sets of clamping components (3) are installed on the support plate (5) and move relative to or towards each other in the horizontal direction of the support plate (5). A slide (6) is fixedly connected to the back of the support plate (5). The two ends of the slide (6) are provided with slide rails (7). The two slide rails (7) are vertically installed on the worktable (1). A crossbeam (8) is provided across the upper end of the two slide rails (7). A cylinder (9) for driving the slide (6) to slide up and down is installed on the upper end of the crossbeam (8). The output end of the cylinder (9) passes through the crossbeam (8) and is fixed on the slide (6).

2. The printing screen frame according to claim 1, characterized in that: The clamping assembly (3) includes a vertical plate (301) and a mounting bracket (302). The vertical plate (301) and the mounting bracket (302) are vertically arranged and form an L-shape. The mounting bracket (302) is fixedly installed at the bottom end of the vertical plate (301). The vertical plate (301) is vertically installed on the support plate (5). The rear end of the vertical plate (301) is provided with a T-shaped step, which is fitted into the support plate (5). The support plate (5) has a horizontally oriented sliding groove. The T-shaped step slides in the groove, and a bidirectional screw (303) is provided in the groove. The two ends of the bidirectional screw (303) are rotatably installed at both ends of the support plate (5). One end of the bidirectional screw (303) extends out of the support plate (5) and is fixedly connected to a first motor (304). The first motor (304) is horizontally fixed to the side of the support plate (5). The upright plate (301) is fitted on the bidirectional screw (303) and threadedly connected to the bidirectional screw (303).

3. The printing screen frame according to claim 2, characterized in that: The clamping assembly (3) further includes a clamping plate (305), which is slidably mounted on the mounting frame (302). The clamping plate (305) is perpendicular to the mounting frame (302). The mounting frame (302) has a guide groove (3021) longitudinally arranged on its inner side. One side of the clamping plate (305) is slidably mounted in the guide groove (3021). The rear end of the clamping plate (305) is provided with a telescopic rod (306). The telescopic rod (306) is fixed to the rear end of the upright plate (301) away from the mounting frame (302). The telescopic end of the telescopic rod (306) passes through the upright plate (301) and is fixedly mounted on the clamping plate (305). The telescopic rod (306) drives the clamping plate (305) to slide along the guide groove (3021). The front end of the clamping plate (305) abuts against the outside of the screen printing plate (2).

4. The printing screen frame according to claim 3, characterized in that: The mounting bracket (302) has an L-shaped structure. The lower inner end of the mounting bracket (302) is provided with a mounting platform (3022). The bottom surface of the mounting platform (3022) is consistent with the bottom surface of the mounting bracket (302). The upper surface of the mounting platform (3022) is lower than the upper surface of the mounting bracket (302). The bottom surface of the clamping plate (305) is slidably mounted on the mounting platform (3022). The guide groove (3021) is provided on the side of the upper end of the mounting platform (3022). The front end of the mounting platform (3022) is vertically provided with a limiting plate (3023) for limiting the front end of the screen printing plate (2).

5. The printing screen frame according to claim 4, characterized in that: The screen printing plate (2) includes a screen frame (201) and a screen (202). The screen (202) is fixedly installed inside the screen frame (201). The outer side of the screen frame (201) is provided with a stepped surface. The stepped surface of the screen frame (201) is correspondingly set with the mounting platform (3022). The stepped surface of the screen frame (201) is placed on the mounting platform (3022). The front end of the screen frame (201) abuts against the inner side of the limiting plate (3023).

6. The printing screen frame according to claim 5, characterized in that: The clamping assembly (4) includes a pressing rod (401), a rotating plate (402), a floating shaft (403), a rotating shaft (404), a worm gear (405), a worm (406), and a second motor (407). The rotating shaft (404) is rotatably mounted in the mounting bracket (302). The floating shaft (403) is provided inside the rotating shaft (404). An arc-shaped groove (409) is provided on the outer side of the rotating shaft (404). A guide post (408) is provided in the arc-shaped groove (409). The guide post (408) is horizontally fixed to the outer side of the floating shaft (403). A worm gear (405) is provided at the lower end of the rotating shaft (404). The worm gear (405) is fixedly mounted on the rotating shaft (404). A worm (406) is provided on one side of the worm gear (405). The worm (406) meshes with the worm gear (405). Both ends of the worm (406) are rotatably mounted on both sides of the mounting bracket (302). One end of the worm (406) extends out of the upright plate (301) and is fixedly connected to the second motor (407). The second motor (407) is horizontally fixed at the rear end of the upright plate (301). A rotating plate (402) is fixedly mounted on the top surface of the floating shaft (403). A pressing rod (401) is provided at the front end of the rotating plate (402). The pressing rod (401) is vertically mounted at the front end of the rotating plate (402) and is located at the upper end of the screen printing plate (2).

7. The printing screen frame according to claim 5, characterized in that: The bottom surface of the wire frame (201) is lower than the bottom surface of the mounting bracket (302).

8. The printing screen frame according to claim 6, characterized in that: The pressing rod (401) includes a threaded rod (4011) and a pressing head (4012). The threaded rod (4011) passes through the rotating plate (402). Several nuts (4013) are threaded onto the threaded rod (4011). The nuts (4013) are respectively disposed on the upper and lower sides of the rotating plate (402). The pressing head (4012) is fixedly connected to the lower end of the threaded rod (4011). The lower end face of the pressing head (4012) abuts against the upper end face of the mesh frame (201).

Images