Screen frame leveling device of screen printing machine

Abstract

The utility model discloses a screen frame leveling device of a screen printing machine, which comprises two oppositely arranged screen frame adjusting modules, the screen frame adjusting module comprises a mounting rack, a placing rack for placing a screen frame, a movable joint structure arranged between the middle of the mounting rack and the middle of the placing rack, leveling mechanisms arranged at the two ends of the mounting rack respectively and used for adjusting the positions of the two ends of the placing rack, and laser distance measuring sensors arranged at the two ends of the placing rack respectively; wherein the leveling mechanism comprises a movable block which is in sliding and rotating connection with the placing frame and an adjusting driving mechanism which is used for driving the movable block to move vertically. According to the screen frame leveling device, the relative positions of the four corners of the screen frame of the screen printing plate and the printing platform can be automatically adjusted, the adjusting flexibility is high, manpower is saved through automatic operation, the adjusting precision is high, it can be guaranteed that the screen frame is parallel to the printing platform, and therefore the screen printing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of screen printing machine technology, specifically to a screen frame leveling device for a screen printing machine. Background Technology

[0002] Screen printing refers to the process of using a screen as a printing plate and creating a screen printing plate with images and text through a photosensitive plate-making method. Screen printing consists of five main elements: screen printing plate, squeegee, ink, printing platform, and substrate. It utilizes the basic principle that ink can pass through the mesh openings of the screen printing plate in the image areas, while ink cannot pass through the mesh openings in the non-image areas. During printing, ink is poured into one end of the screen printing plate, and a squeegee applies a certain pressure to the ink areas on the screen printing plate while moving at a constant speed towards the other end of the screen printing plate. As the squeegee moves, the ink is squeezed from the mesh openings of the image areas onto the substrate.

[0003] Existing screen printing machines, such as the utility model patent with authorization publication number CN205573283U, disclose a screen adjusting mechanism and a printing machine equipped with such a mechanism. By adjusting a knob, a horizontal lead screw is rotated, thereby causing a moving part to move along the horizontal lead screw. Adjusting the knob also causes the moving part to move up and down along a vertical lead screw. A shelf is connected to a sliding rod, which is fixedly connected to the moving part. Thus, the moving part causes the shelf to move up and down, adjusting the vertical position of the screen and ensuring the screen cutouts are in the correct position. However, the aforementioned screen adjusting mechanism still has the following shortcomings:

[0004] Existing screen adjustment mechanisms are mainly adjusted manually, which results in low adjustment accuracy, cumbersome operation, and the screen moving horizontally or vertically during adjustment, making it impossible to guarantee the parallelism between the screen printing plate and the printing platform, and the adjustment flexibility is not high. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned problems and provide a screen printing machine frame leveling device that can automatically adjust the relative positions of the four corners of the screen printing plate frame with the printing platform. It has high adjustment flexibility, automatic operation saves manpower, and high adjustment accuracy, which can ensure that the screen frame and the printing platform are parallel, thereby improving the screen printing quality.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A screen printing machine frame leveling device includes two opposing frame adjustment modules. Each frame adjustment module includes a mounting frame, a placement frame for placing the frame, a movable joint structure disposed between the middle of the mounting frame and the middle of the placement frame, leveling mechanisms disposed at both ends of the mounting frame for adjusting the positions of the two ends of the placement frame, and laser rangefinders disposed at both ends of the placement frame. The leveling mechanism includes a movable block that is slidably and rotatably connected to the placement frame and an adjustment drive mechanism for driving the movable block to move vertically.

[0008] The working principle of the screen printing machine frame leveling device mentioned above is as follows:

[0009] During operation, the screen frame is placed on the mounting frame. Two mounting frames can fix both ends of the screen frame. Each screen frame adjustment module has two leveling mechanisms, and the screen frame leveling device has a total of four leveling mechanisms, corresponding to the four corners of the screen frame. A laser rangefinder can detect the relative position of the four corners of the screen frame with respect to the printing platform. The adjustment drive mechanism can drive the movable block to move up and down according to the relative position, thereby moving the mounting frame. Since the mounting frame and the movable block are slidably and rotatably connected, the adjustment drive mechanism drives the movable block to adjust the relative position of the end of the mounting frame with respect to the printing platform, thereby adjusting the relative position of the four corners with respect to the printing platform and ensuring that the screen frame and the printing platform are parallel. The movable joint structure between the middle of the mounting frame and the middle of the mounting frame can ensure that the mounting frame adaptively adjusts its position during the adjustment process to adapt to changes in the posture of the mounting frame, while enhancing the connection stability between the mounting frame and the mounting frame, thereby improving the stability of the fixed screen frame.

[0010] In a preferred embodiment of this utility model, a mounting seat is provided between the movable block and the placement frame; the mounting seat has a sliding groove, and the movable block has a connecting shaft, which is rotatably and slidably connected to the sliding groove. By setting the mounting seat and the connecting shaft, a sliding and rotatable connection between the placement frame and the movable block can be achieved, resulting in a very compact structure; the adjustment drive mechanism can drive the movable block to move up and down according to their relative positions. Because the placement frame and the movable block are slidably and rotatably connected, the movement of the movable block allows the position of the mounting seat to be adjusted, thereby achieving adjustment of the end position of the placement frame.

[0011] Preferably, a bearing is provided on the connecting shaft, and the bearing is rotatably and slidably connected to the sliding groove. By providing a bearing, the rotation and sliding effects are improved, and wear on the connecting shaft is prevented.

[0012] Preferably, the adjustment drive mechanism includes an adjustment drive motor, a lead screw, and a lead screw nut; the adjustment drive motor is fixed on a mounting bracket, the lead screw is vertically arranged, the upper end of the lead screw is connected to the main shaft of the adjustment drive motor, the lead screw nut is connected to the lead screw, and the movable block is mounted on the lead screw nut. In this structure, the adjustment drive motor drives the lead screw to rotate, causing the lead screw nut to move up and down, thereby causing the movable block to move up and down; the laser rangefinder detects the four corners of the screen frame, and the rotation of the adjustment drive motor is controlled by software to automatically level the parallelism between the screen frame and the printing platform.

[0013] Preferably, the movable joint structure includes a movable shaft disposed in the middle of the placement frame, a first slider fixedly disposed in the middle of the mounting frame, and a second slider rotatably connected to the movable shaft. The first slider and the second slider are slidably connected to each other in the vertical direction. By setting the above structure, the cooperation of the first slider and the second slider allows the placement frame to slide up and down relative to the mounting frame. The movable shaft allows the placement frame to rotate relative to the mounting frame. When the adjustment drive mechanism adjusts the end position of the placement frame, the up-and-down sliding and rotational configuration can adapt to the movement and posture changes of the placement frame, thereby achieving angular adjustment of the screen frame. Furthermore, the movable joint structure in the middle, combined with the leveling mechanisms at both ends, ensures that the placement frame remains stable after adjustment, thus guaranteeing the stability of the screen frame and maintaining the stable posture of the screen printing plate, thereby improving the quality of screen printing.

[0014] Preferably, the mounting base includes a horizontal block and two vertical blocks disposed on the horizontal block, the movable block is located between the two vertical blocks, the sliding groove is disposed on the vertical block, and two connecting shafts are provided, with each connecting shaft corresponding to one of the two sliding grooves. By setting the above structure, the stability of the sliding and rotating connection between the movable block and the mounting base is ensured, and the structure can also be made very compact.

[0015] Preferably, the upper end of the placement frame is provided with multiple clamping bolts for pressing the wire mesh frame onto the placement frame. With this structure, after the wire mesh frame is placed on the placement frame, adjusting the clamping bolts causes them to press downwards, ensuring the wire mesh frame is stably fixed. When disassembling the wire mesh frame, the clamping bolts can also be adjusted in the opposite direction to loosen it, making the operation very convenient.

[0016] Preferably, the placement rack includes a L-shaped frame and placement plates disposed at both ends of the L-shaped frame; the lower end of the L-shaped frame is provided with a guide groove, and the placement plates are slidably connected to the guide groove. In the above structure, by setting the placement plates, wire mesh frames can be placed, and the guide grooves allow the position of the placement plates to be adjusted to accommodate wire mesh frames of different widths, providing high flexibility.

[0017] Furthermore, a guide block is slidably provided on the guide groove, and the placement plate is connected to the guide block by bolts. After the placement plate is positioned, tightening the bolts secures the placement plate to the lower end of the L-shaped frame, thus fixing the placement plate and facilitating the installation of the mesh frame.

[0018] Preferably, the screen frame leveling device further includes a frame, a horizontal frame slidably mounted on the frame, and a vertical movement drive mechanism for driving the horizontal frame to move vertically; the screen frame adjustment module further includes an adjustment frame slidably mounted on the horizontal frame and a vertical drive mechanism for driving the mounting frame to move vertically. By configuring the above structure, the adjustment frame is slidably mounted on the horizontal frame, and the distance between the two adjustment frames can be adjusted, thereby adjusting the distance between the two screen frame adjustment modules, thus better adapting to the length of the screen frame; the vertical drive mechanism can drive the mounting frame to move up and down, thereby driving the placement frame to move up and down, providing greater adjustment flexibility; the vertical movement drive mechanism can drive the two screen frame adjustment modules to move synchronously as a whole, facilitating the overall adjustment of the distance between the screen frame and the printing platform.

[0019] Preferably, the adjusting frame is provided with an adjusting handle for locking the adjusting frame onto the transverse frame. By providing the adjusting handle, when the distance between the two adjusting frames is adjusted to a suitable position, the adjusting frame can be locked onto the transverse frame by adjusting the handle, and at the same time, the adjusting frame can also be released by adjusting the handle.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The screen frame leveling device of this utility model has four leveling mechanisms corresponding to the four corners of the screen frame of the screen printing plate. The relative position of the four corners of the screen frame with the printing platform can be detected by the laser rangefinder. The adjustment drive mechanism can drive the movable block to move up and down according to the relative position, thereby driving the placement frame to move. This allows the relative position of the end of the placement frame with the printing platform to be adjusted, thus realizing the adjustment of the relative position of the four corners with the printing platform. This ensures that the screen frame and the printing platform are parallel, has high adjustment flexibility, and thus improves the screen printing quality.

[0022] 2. The mesh frame leveling device in this utility model automatically adjusts the mesh frame by sensing the laser range sensor and executing the adjustment drive mechanism during the adjustment process. Automatic operation can save manpower and achieve higher adjustment accuracy.

[0023] 3. The mesh frame leveling device in this utility model has a movable joint structure between the middle of the mounting frame and the middle of the placement frame, which can ensure that the placement frame can adaptively adjust the position of the placement frame during the adjustment process, adapt to the posture changes of the placement frame, and at the same time enhance the connection stability between the placement frame and the mounting frame, thereby improving the stability of the mesh frame fixation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of one specific embodiment of a screen printing machine frame leveling device according to the present invention.

[0025] Figure 2 This is a front view of the hidden printing platform 19 of the screen frame leveling device in this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the mesh frame adjustment module in this utility model.

[0027] Figure 4 This is a three-dimensional structural diagram of the mesh frame adjustment module in this utility model from another perspective.

[0028] Figure 5 This is a three-dimensional structural diagram of the hidden adjustment frame and vertical drive mechanism of the mesh frame adjustment module in this utility model.

[0029] Figure 6 This is a three-dimensional structural diagram of the leveling mechanism in this utility model.

[0030] Figure 7 This is a three-dimensional structural diagram of the movable block, lead screw nut, connecting shaft, and bearing in this utility model.

[0031] Figure 8 This is a three-dimensional structural diagram of the mounting base in this utility model.

[0032] Figure 9 This is a three-dimensional structural diagram of the mesh frame adjustment module in this utility model.

[0033] Figure 10 for Figure 9 The main view.

[0034] Figure 11 for Figure 9 A bottom view.

[0035] Figure 12 This is a three-dimensional structural diagram of the placement rack in this utility model.

[0036] Figure 13 This is a three-dimensional structural diagram of the placement rack in this utility model from another perspective. Detailed Implementation

[0037] To enable those skilled in the art to fully understand the technical solution of this utility model, the present utility model will be further described below in conjunction with the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0038] See Figures 1-7 This embodiment of a screen printing machine frame leveling device includes two opposing frame adjustment modules 01. Each frame adjustment module 01 includes a mounting frame 1 (also known as a mounting plate), a placement frame 2 for placing the frame, a movable joint structure 3 disposed between the middle of the mounting frame 1 and the middle of the placement frame 2, a leveling mechanism 4 disposed at both ends of the mounting frame 1 for adjusting the position of both ends of the placement frame 2, and laser rangefinders 5 disposed at both ends of the placement frame 2. The leveling mechanism 4 includes a movable block 4-1 that is slidably and rotatably connected to the placement frame 2 and an adjustment drive mechanism 4-2 for driving the movable block 4-1 to move vertically. The screen frame of the screen printing plate has four leveling mechanisms 4 at its four corners. The laser rangefinder 5 can detect the relative position of the four corners of the screen frame with respect to the printing platform 19. The adjustment drive mechanism 4-2 can drive the movable block 4-1 to move up and down according to the relative position, thereby moving the placement frame 2. This allows the relative position of the end of the placement frame 2 with respect to the printing platform 19 to be adjusted, thus achieving the adjustment of the relative position of the four corners with respect to the printing platform 19. This ensures that the screen frame and the printing platform 19 are parallel, providing high adjustment flexibility and improving the quality of screen printing.

[0039] See Figures 3-8 A mounting base 6 is provided between the movable block 4-1 and the placement frame 2, and the mounting base 6 is fixedly connected to the placement frame 2. The mounting base 6 is provided with a sliding groove 7, and the movable block 4-1 is provided with a connecting shaft 8. The connecting shaft 8 is rotatably and slidably connected to the sliding groove 7. By setting the mounting base 6 and the connecting shaft 8, the placement frame 2 and the movable block 4-1 can be slidably and rotatably connected, and the structure is very compact. The adjustment drive mechanism 4-2 can drive the movable block 4-1 to move up and down according to the relative position. Since the placement frame 2 and the movable block 4-1 are slidably and rotatably connected, the movement of the movable block 4-1 allows the position of the mounting base 6 to be adjusted, thereby realizing the adjustment of the end position of the placement frame 2.

[0040] See Figures 3-8 The axis of the connecting shaft 8 of the frame adjustment module 01 extends toward the placement frame 2 of the other frame adjustment module 01. The direction in which the connecting shaft 8 slides in the sliding groove 7 is perpendicular to the axis of the connecting shaft 8. It can be regarded that the axis of the connecting shaft 8 is the same as the length direction of the frame, and the direction in which the connecting shaft 8 slides in the sliding groove 7 is the same as the width direction of the frame.

[0041] See Figures 3-8 A bearing 9 is provided on the connecting shaft 8, and the bearing 9 is rotatably and slidably connected to the sliding groove 7. By providing the bearing 9, the rotation and sliding effect is improved, and wear on the connecting shaft 8 is prevented.

[0042] See Figures 3-7The adjustment drive mechanism 4-2 includes an adjustment drive motor 4-21, a lead screw 4-22, and a lead screw nut 4-23. The adjustment drive motor 4-21 is fixed on the mounting bracket 1. The lead screw 4-22 is vertically arranged, and its upper end is connected to the main shaft of the adjustment drive motor 4-21. The lead screw nut 4-23 is connected to the lead screw 4-22 in a cooperative manner. The movable block 4-1 is mounted on the lead screw nut 4-23. In this structure, the adjustment drive motor 4-21 drives the lead screw 4-22 to rotate, which in turn drives the lead screw nut 4-23 to move up and down, thereby causing the movable block 4-1 to move up and down. The laser rangefinder sensor 5 detects the four corners of the screen frame, and the rotation of the adjustment drive motor 4-21 is controlled by software to automatically level the parallelism between the screen frame and the printing platform 19.

[0043] See Figures 3-5 and Figures 9-13 The movable joint structure 3 includes a movable shaft 3-1 located in the middle of the placement frame 2, a first slider 3-2 fixedly located in the middle of the mounting frame 1, and a second slider 3-3 rotatably connected to the movable shaft 3-1. The first slider 3-2 and the second slider 3-3 are slidably connected to each other in the vertical direction. With this structure, the cooperation of the first slider 3-2 and the second slider 3-3 allows the placement frame 2 to slide up and down relative to the mounting frame 1. The movable shaft 3-1 allows the placement frame 2 to rotate relative to the mounting frame 1. When the adjustment drive mechanism 4-2 adjusts the end position of the placement frame 2, the up-and-down sliding and rotational configuration can adapt to the movement and posture changes of the placement frame 2, thereby achieving angular adjustment of the screen frame. Furthermore, the movable joint structure 3 in the middle, combined with the leveling mechanisms 4 at both ends, ensures that the placement frame 2 remains stable after adjustment, thus guaranteeing the stability of the screen frame and maintaining the stable posture of the screen printing plate, thereby improving the quality of screen printing.

[0044] See Figure 5 and Figures 9-11 The mounting frame 1 is provided with guide components at both ends. The guide components include mounting blocks 10 fixedly mounted on the placement frame 2 and two sets of rollers 11 mounted on the mounting blocks 10. The end of the mounting frame 1 is located between the two sets of rollers 11. The two sets of rollers 11 are arranged along the axial direction of the connecting shaft. The two sets of rollers 11 can guide the placement frame 2 to move in the vertical direction, ensuring the stability of the placement frame 2 during adjustment.

[0045] See Figures 3-8The mounting base 6 includes a horizontal block 6-1 and two vertical blocks 6-2 disposed on the horizontal block 6-1. The movable block 4-1 is located between the two vertical blocks 6-2. The sliding groove 7 is disposed on the vertical block 6-2. Two connecting shafts 8 are provided, with each connecting shaft 8 corresponding to one of the two sliding grooves 7. The lead screw 4-22 is rotatably connected to the mounting frame 1 and the horizontal block 6-1. By setting the above structure, the stability of the sliding and rotating connection between the movable block 4-1 and the mounting base 6 is ensured, and the structure can also be made very compact.

[0046] See Figures 3-5 and Figures 9-13 The upper end of the placement frame 2 is provided with multiple clamping bolts 12 for pressing the mesh frame onto the placement frame 2. With the above structure, after the mesh frame is placed on the placement frame 2, the clamping bolts 12 are adjusted to press the mesh frame downwards, ensuring the stability of the mesh frame; when disassembling the mesh frame, the clamping bolts 12 can also be adjusted in the opposite direction to loosen it, making the operation very convenient.

[0047] See Figures 3-5 and Figures 9-13 The placement rack 2 includes a 7-shaped frame 2-1 and placement plates 2-2 disposed at both ends of the 7-shaped frame 2-1; the lower end of the 7-shaped frame 2-1 is provided with a guide groove 2-3, and the placement plates 2-2 are slidably connected to the guide groove 2-3. In the above structure, by setting the placement plates 2-2, the wire mesh frame can be placed, and the guide groove 2-3 allows the position of the placement plates 2-2 to be adjusted to adapt to wire mesh frames of different widths, thus providing high flexibility.

[0048] See Figures 3-5 and Figures 9-13 A guide block 2-4 is slidably mounted on the guide groove 2-3, and the placement plate 2-2 is connected to the guide block 2-4 by bolts. After the position of the placement plate 2-2 is adjusted, the bolts are tightened to secure the placement plate 2-2 to the lower end of the 7-shaped frame 2-1, thereby fixing the placement plate 2-2 and facilitating the installation of the mesh frame.

[0049] See Figures 1-4The screen frame leveling device further includes a frame 13, a horizontal frame 14 vertically slidably mounted on the frame 13, and a vertical movement drive mechanism 15 for driving the horizontal frame 14 to move vertically. The screen frame adjustment module 01 further includes an adjustment frame 16 horizontally slidably mounted on the horizontal frame 14 and a vertical drive mechanism 17 for driving the mounting frame 1 to move vertically. With the above structure, the adjustment frame 16 is slidably mounted on the horizontal frame 14, and the distance between the two adjustment frames 16 can be adjusted, thereby adjusting the distance between the two screen frame adjustment modules 01, thus better adapting to the length of the screen frame. The vertical drive mechanism 17 can drive the mounting frame 1 to move up and down, thereby driving the placement frame 2 to move up and down, providing greater adjustment flexibility. The vertical movement drive mechanism 15 can drive the two screen frame adjustment modules 01 to move synchronously, facilitating the overall adjustment of the distance between the screen frame and the printing platform 19.

[0050] See Figure 1-Figure 3 The adjusting frame 16 is provided with an adjusting handle 18 for locking the adjusting frame 16 onto the transverse frame 14; the adjusting frame 16 and the transverse frame 14 are slidably connected by a guide rail and a slider. By setting the adjusting handle 18, when the distance between the two adjusting frames 16 is adjusted to a suitable position, the adjusting frame 16 can be locked onto the transverse frame 14 by adjusting the adjusting handle 18, and at the same time, the adjusting frame 16 can also be released by adjusting the adjusting handle 18.

[0051] See Figure 1-Figure 3 Both the vertical drive mechanism 17 and the vertical movement drive mechanism 15 can be driven by a combination of a motor and a screw drive mechanism to achieve vertical drive of the mounting frame 1 and overall drive of the two mesh frame adjustment modules 01.

[0052] See Figures 1-7 The working principle of the screen printing machine's frame leveling device is as follows:

[0053] During operation, the screen frame is placed on the placement frame 2. The two placement frames 2 can fix the two ends of the screen frame. Each screen frame adjustment module 01 is equipped with two leveling mechanisms 4. The screen frame leveling device has a total of four leveling mechanisms 4, which correspond to the four corners of the screen frame. The laser range sensor 5 can detect the relative position of the four corners of the screen frame with the printing platform 19. The adjustment drive mechanism 4-2 can drive the movable block 4-1 to move up and down according to the relative position, thereby moving the placement frame 2. Since the placement frame 2 and the movable block 4-1 are slidably and rotatably connected, the adjustment drive mechanism 4-2 drives the movable block 4-1, so that the relative position of the end of the placement frame 2 with the printing platform 19 can be adjusted, thereby realizing the adjustment of the relative position of the four corners with the printing platform 19, ensuring that the screen frame and the printing platform 19 are parallel. The movable joint structure 3 between the middle of the mounting frame 1 and the middle of the placement frame 2 can ensure that the placement frame 2 adaptively adjusts its position during the adjustment process, adapting to the posture changes of the placement frame 2, while enhancing the connection stability between the placement frame 2 and the mounting frame 1, thereby improving the stability of the screen frame fixation.

[0054] The above are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above content. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A screen frame leveling device for a screen printing machine, characterized in that, The device includes two opposing mesh frame adjustment modules. Each mesh frame adjustment module includes a mounting frame, a placement frame for placing the mesh frame, a movable joint structure located between the middle of the mounting frame and the middle of the placement frame, a leveling mechanism located at both ends of the mounting frame for adjusting the position of the two ends of the placement frame, and laser rangefinders located at both ends of the placement frame. The leveling mechanism includes a movable block that is slidably and rotatably connected to the placement frame and an adjustment drive mechanism for driving the movable block to move vertically.

2. The screen frame leveling device for a screen printing machine according to claim 1, characterized in that, A mounting base is provided between the movable block and the placement frame; the mounting base is provided with a sliding groove, and the movable block is provided with a connecting shaft, which is rotatably and slidably connected to the sliding groove.

3. The screen frame leveling device for a screen printing machine according to claim 2, characterized in that, A bearing is provided on the connecting shaft, and the bearing is rotatably and slidably connected to the sliding groove.

4. The screen frame leveling device for a screen printing machine according to claim 1, characterized in that, The adjustment drive mechanism includes an adjustment drive motor, a lead screw, and a lead screw nut; the adjustment drive motor is fixed on the mounting bracket, the lead screw is vertically arranged, the upper end of the lead screw is connected to the main shaft of the adjustment drive motor, the lead screw nut is connected to the lead screw, and the movable block is installed on the lead screw nut.

5. The screen frame leveling device for a screen printing machine according to claim 1, characterized in that, The movable joint structure includes a movable shaft disposed in the middle of the placement frame, a first slider fixedly disposed in the middle of the mounting frame, and a second slider rotatably connected to the movable shaft. The first slider and the second slider are slidably connected to each other in the vertical direction.

6. The screen frame leveling device for a screen printing machine according to claim 2, characterized in that, The mounting base includes a horizontal block and two vertical blocks disposed on the horizontal block. The movable block is located between the two vertical blocks. The sliding groove is disposed on the vertical block. There are two connecting shafts, and the two connecting shafts correspond one-to-one with the two sliding grooves.

7. The screen frame leveling device for a screen printing machine according to claim 1, characterized in that, The upper end of the placement frame is provided with multiple clamping bolts for pressing the wire mesh frame onto the placement frame.

8. The screen frame leveling device for a screen printing machine according to claim 1, characterized in that, The placement rack includes a 7-shaped frame and placement plates disposed at both ends of the 7-shaped frame; the lower end of the 7-shaped frame is provided with a guide groove, and the placement plates are slidably connected to the guide groove.

9. A screen printing machine frame leveling device according to claim 1, characterized in that, The wire mesh leveling device further includes a frame, a horizontal frame that is vertically slidably mounted on the frame, and a vertical movement drive mechanism for driving the horizontal frame to move along the vertical direction; the wire mesh adjustment module further includes an adjustment frame that is horizontally slidably mounted on the horizontal frame and a vertical drive mechanism for driving the mounting frame to move along the vertical direction.

10. A screen printing machine frame leveling device according to claim 9, characterized in that, The adjustment frame is equipped with an adjustment handle for locking the adjustment frame onto the horizontal frame.

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