Acrylic plate screen printing machine

Abstract

The utility model relates to an acrylic plate screen printing machine which comprises a base body and a supporting table rotationally connected to the base body, the supporting table is connected with a plate body containing table, and the plate body containing table is used for containing an acrylic plate. The device further comprises an adsorption assembly, the adsorption assembly comprises a plurality of first adsorption holes formed in the plate body placing table, and the first adsorption holes are used for adsorbing the acrylic plate body; a screen printing machine, a quality detection piece and a discharging piece are further connected to the base body in sequence. The technical scheme has the beneficial technical effects that the supporting table is rotationally connected to the base body, and the machining angle can be flexibly adjusted to meet different screen printing requirements; the planarization design of the plate body placing table provides uniform support for the acrylic plate, deformation or deviation caused by uneven stress is avoided, it is ensured that the plate body is always in a stable state in the silk-screen process, and the printing precision is improved. A plurality of first suction holes formed in the surface of the plate body placing table form a negative pressure adsorption system.

Description

Technical Field

[0001] This utility model relates to the field of screen printing machines, specifically to an acrylic sheet screen printing machine. Background Technology

[0002] Acrylic sheets are widely used in advertising signage, electronic product panels, and decorative applications due to their excellent light transmittance, vibrant colors, and ease of processing. Screen printing, as a key process for printing patterns and text on acrylic sheet surfaces, directly impacts the market competitiveness of products through its production efficiency and printing quality.

[0003] The following technical problems are commonly found in the existing acrylic sheet screen printing production process: First, the sheet fixing method mostly uses clamps or simple mechanical clamping devices, which not only easily leave indentations on the acrylic sheet surface, affecting the product's aesthetics, but also have poor fixing effect on sheets with irregular sizes and shapes, easily causing sheet displacement during screen printing, resulting in inaccurate pattern registration and increased scrap rate; Second, the quality inspection process mostly relies on manual visual inspection, which is greatly affected by the subjective factors of workers, resulting in low inspection efficiency and easy omissions and false inspections; Even when using automated inspection equipment, it is often difficult to adapt to the inspection needs of acrylic sheets of different specifications due to the inconvenience of adjusting the height and angle of the equipment.

[0004] Therefore, it is very necessary to provide an acrylic sheet screen printing machine to solve the above-mentioned technical problems. Utility Model Content

[0005] Based on the above description, this utility model provides an acrylic sheet screen printing machine to solve the problem that the use of clamps or simple mechanical pressing devices in the prior art leads to an increased scrap rate of the sheet.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An acrylic sheet screen printing machine includes a base and a support platform rotatably connected to the base. A sheet placement platform is connected to the support platform for placing acrylic sheets. It also includes an adsorption assembly, which includes a plurality of first suction holes formed on the sheet placement platform for adsorbing the acrylic sheets. The base is also sequentially connected to a screen printing machine, a quality inspection component, and a feeding component. The screen printing machine is used to screen print on the acrylic sheets. The quality inspection component is used to inspect the content screen-printed on the acrylic sheets. The feeding component is used to classify the screen-printed acrylic sheets according to the inspection results of the quality inspection component.

[0007] Furthermore, it also includes a platform rotation drive, which includes a platform rotation motor connected to the base and a platform gear connected to the bottom of the support platform. The platform gear is connected to a motor gear, and the motor gear is connected to the rotating end of the platform rotation motor.

[0008] Furthermore, the adsorption assembly includes a first air pipe connected to the first suction hole and a second air pipe connected to the first air pipe, and a vacuum adsorption pump is connected to the second air pipe, the vacuum adsorption pump being fixed in the base body.

[0009] Furthermore, the first trachea is a rigid trachea, and the adsorption assembly includes a tube support connected to the support platform, with the first trachea fixed to the tube support.

[0010] Furthermore, the adsorption assembly includes a tube block connected to the support platform, a first rotating support ring rotatably connected to the tube block, and a second rotating support ring rotatably connected to the base.

[0011] Furthermore, an air hose reel is connected to the base, and the second air hose is connected to the air hose reel.

[0012] Furthermore, the quality inspection component includes an inspection support connected to the base, the inspection support having a lifting slide rail, a lifting slider connected to the lifting slide rail, a rotating ball seat connected to the lifting slider, a rotating ball connected to the rotating ball seat, and an industrial camera connected to the rotating ball. The industrial camera is used to connect to a controller to analyze the captured data after the industrial camera has taken a picture, so as to classify the acrylic sheet for subsequent use by the controller.

[0013] Furthermore, a rotating screw is rotatably connected inside the lifting slide, the rotating screw is threadedly connected to the lifting slider, and a rotating disk is connected to the rotating screw.

[0014] Furthermore, a first position sensor, a second position sensor, a third position sensor, and a fourth position sensor are connected to the base. These sensors are positioned along °, °, °, and ° on the base, with the first position sensor located at the loading position, the second position sensor at the screen printing machine position, the third position sensor at the quality inspection part position, and the fourth position sensor at the unloading part position. The first, second, third, and fourth position sensors are connected to a controller. The controller, third position sensor, and fourth position sensor are used to trigger the adsorption assembly to open when the acrylic sheet moves to the position of the first position sensor, so that the acrylic sheet is stably placed on the plate placement stage; when the acrylic sheet moves to the position of the second position sensor, the controller triggers the screen printing machine to run; when the acrylic sheet moves to the position of the third position sensor, the controller triggers the quality inspection component to run; when the acrylic sheet moves to the fourth position sensor, the controller controls the adsorption assembly to close, the controller triggers the unloading component to run, and simultaneously, after unloading is completed, triggers the support platform to rotate in the opposite direction, so that the plate placement stage moves back to the position of the first position sensor.

[0015] Furthermore, the unloading component includes an unloading bracket and a first unloading tray and a second unloading tray connected to the unloading bracket. An unloading moving shaft is connected to the unloading bracket, a moving slider is connected to the unloading moving shaft, a telescopic cylinder is connected to the moving slider, and an unloading suction tray is connected to the telescopic cylinder.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] The support platform is rotatably connected to the base, allowing for flexible adjustment of the processing angle to adapt to different screen printing needs. The planar design of the board placement platform provides uniform support for the acrylic board, preventing deformation or displacement caused by uneven force, ensuring the board remains stable during screen printing, and improving printing accuracy. Several first suction holes on the surface of the board placement platform form a negative pressure adsorption system, which can quickly fix the acrylic board, replacing traditional mechanical clamps, avoiding scratches on the board surface, eliminating manual positioning errors, and accommodating rapid switching between different sized boards, thus improving processing compatibility. The base integrates the screen printing machine, quality inspection components, and unloading components in sequence, forming a continuous processing line. The screen printing machine directly connects to the fixed acrylic board, reducing intermediate handling steps; the quality inspection components scan the screen printing content in real time, using image recognition technology to detect the integrity, positional accuracy, and color deviation of text / patterns, achieving zero tolerance for defects; the unloading components automatically sort qualified and defective products based on the inspection results, avoiding human error and improving overall yield. This solves the problem that existing technologies using clamps or simple mechanical clamping devices can lead to increased scrap rates on the plates. Attached Figure Description

[0018] Figure 1 One of the overall structural schematic diagrams of an acrylic plate screen printing machine provided in this embodiment of the utility model;

[0019] Figure 2 A second schematic diagram of the overall structure of an acrylic plate screen printing machine provided for an embodiment of this utility model;

[0020] Figure 3 for Figure 2 Enlarged structural diagram at point Q;

[0021] Figure 4 One of the partial cross-sectional structural schematic diagrams of an acrylic plate screen printing machine provided for an embodiment of this utility model;

[0022] Figure 5 This is one of the partial cross-sectional structural schematic diagrams of an acrylic sheet screen printing machine provided for an embodiment of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base body;

[0025] 2. Support platform; 21. Plate placement platform;

[0026] 3. Adsorption assembly; 31. First suction hole; 32. First air tube; 33. Second air tube; 34. Vacuum adsorption pump; 35. Tube support; 36. Tube support block; 37. First rotating support ring; 38. Second rotating support ring; 39. Air tube telescopic reel;

[0027] 4. Screen printing machine;

[0028] 5. Quality inspection parts; 51. Inspection support; 52. Lifting slide; 53. Lifting slider; 54. Rotating ball seat; 55. Rotating ball; 56. Industrial camera; 57. Rotating screw; 58. Rotating disk;

[0029] 6. Feeding component; 61. Feeding bracket; 62. First feeding tray; 63. Second feeding tray; 64. Feeding moving shaft; 65. Moving slider; 66. Telescopic cylinder; 67. Feeding suction tray;

[0030] 7. Platform rotation drive; 71. Platform rotation motor; 72. Platform gear; 73. Motor gear;

[0031] 81. First position sensor; 82. Second position sensor; 83. Third position sensor; 84. Fourth position sensor. Detailed Implementation

[0032] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0034] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0035] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0036] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0037] like Figures 1 to 5 As shown, an acrylic sheet screen printing machine includes a base 1 and a support platform 2 rotatably connected to the base 1. A sheet placement platform 21 is connected to the support platform 2 for placing acrylic sheets. It also includes an adsorption assembly 3, which includes a plurality of first suction holes 31 formed on the sheet placement platform 21 for adsorbing the acrylic sheets. A screen printing machine 4, a quality inspection component 5, and a feeding component 6 are sequentially connected to the base 1. The screen printing machine 4 is used to screen print on the acrylic sheets; the quality inspection component 5 is used to inspect the screen-printed content on the acrylic sheets; and the feeding component 6 is used to classify the screen-printed acrylic sheets according to the inspection results of the quality inspection component 5.

[0038] In this embodiment, the support platform 2 is rotatably connected to the base 1, allowing for flexible adjustment of the processing angle to adapt to different screen printing needs. The planar design of the board placement platform 21 provides uniform support for the acrylic board, preventing deformation or displacement caused by uneven force, ensuring the board remains stable during screen printing, and improving printing accuracy. Several first suction holes 31 on the surface of the board placement platform 21 form a negative pressure adsorption system, which can quickly fix the acrylic board, replacing traditional mechanical clamps, avoiding scratches on the board surface, eliminating manual positioning errors, adapting to rapid switching of different sized boards, and improving processing compatibility. The base 1 integrates the screen printing machine 4, the quality inspection component 5, and the unloading component 6 in sequence, forming a continuous processing line. The screen printing machine 4 directly docks with the fixed acrylic board, reducing intermediate handling steps; the quality inspection component 5 scans the screen printing content in real time, using image recognition technology to detect the integrity, positional accuracy, and color deviation of text / patterns, achieving zero tolerance for defects; the unloading component 6 automatically sorts qualified and defective products according to the inspection results, avoiding human misjudgment and improving the overall yield.

[0039] In some embodiments, the platform rotation drive 7 is further included. The platform rotation drive 7 includes a platform rotation motor 71 connected to the base 1 and a platform gear 72 connected to the bottom of the support platform 2. The platform gear 72 is geared to a motor gear 73, and the motor gear 73 is connected to the rotating end of the platform rotation motor 71.

[0040] In this embodiment, the platform gear 72 and the motor gear 73 adopt a hardened tooth surface meshing design with a module ≥ 1.5, a pressure angle of 20°, and a precisely controllable transmission ratio, ensuring that the rotation angle error of the support platform 2 is ≤ ±0.1°, meeting the high-precision requirements of acrylic curved surface screen printing, multi-faceted printing, and other similar scenarios. The gear pair's backlash compensation mechanism, such as a pre-tensioned spring, eliminates backlash, avoids angular hysteresis during rotation, and improves repeatability. The platform rotation motor 71 supports servo control, with a step resolution ≤ 0.018° / pulse, enabling rapid response to process commands, such as 90° and 180° rotations, with a switching time ≤ 0.5 seconds, adapting to complex processes such as double-sided printing and multi-angle visual inspection.

[0041] In some embodiments, the adsorption assembly 3 includes a first air pipe 32 connected to the first suction hole 31 and a second air pipe 33 connected to the first air pipe 32. A vacuum adsorption pump 34 is connected to the second air pipe 33, and the vacuum adsorption pump 34 is fixed inside the base 1.

[0042] In this embodiment, the second air tube 33 is made of pressure-resistant PVC spiral tube with a pressure resistance of ≥0.8MPa, to avoid the decrease in adsorption force caused by the deformation of the tube due to negative pressure.

[0043] In some embodiments, the first air tube 32 is a rigid air tube, and the adsorption assembly 3 includes a tube support 35 connected to the support platform 2, with the first air tube 32 fixed to the tube support 35.

[0044] In this embodiment, the vacuum adsorption pump 34, such as a rotary vane vacuum pump, with a pumping speed ≥30L / min, is fixed inside the base 1, reducing external piping connections and lowering the equipment footprint by more than 15%. The contact surface between the pump body and the base 1 uses shock-absorbing rubber pads with a hardness of 40-50 Shore A, and the vibration noise is ≤65dB, meeting the noise standards for industrial workshops. The vacuum adsorption pump 34 is equipped with a frequency converter, which automatically adjusts the power according to the size of the acrylic sheet. For example, when processing 200×200mm sheets, the power is reduced from a full load of 500W to 300W. The configuration of the vacuum adsorption pump 34 is a conventional technique in the art and will not be described in detail here.

[0045] In some embodiments, the adsorption assembly 3 includes a tube support block 36 connected to the support platform 2, a first rotating support ring 37 rotatably connected to the tube support block 36, and a second rotating support ring 38 rotatably connected to the base 1.

[0046] In this embodiment, the first rotating support ring 37 and the second rotating support ring 38 are respectively installed on the support platform 2 and the base 1, forming a double-layer rotating joint. Meanwhile, wrapping rings or wrapping pipes are provided on both sides of the first rotating support ring 37 and the second rotating support ring 38 to fully cover the pipe body, preventing it from detaching during movement. This should also fall within the scope of protection of this application.

[0047] In some embodiments, the base 1 is connected to an air hose reel 39, and the second air hose 33 is connected to the air hose reel 39.

[0048] In this embodiment, the air hose reel 39 is driven by a spiral spring or a motor to achieve an automatic extension and retraction range of ≥2m for the second air hose 33, with a response time ≤0.3 seconds. When the support platform 2 moves or rotates, the reel simultaneously releases or retracts the air hose, preventing it from accumulating, tangling, or being squeezed inside the equipment. For example, the guide pulleys built into the reel are made of nylon with a surface hardness ≥70 Shore D, which can reduce the bending radius of the air hose, with a minimum bending radius ≥5 times the pipe diameter, avoiding pipe wall cracks or inner wall detachment caused by repeated bending, thus increasing the service life of the pipe. It should be noted that the specific structure is a technical means well known to those skilled in the art and is not a protected detail of this application, so it will not be described in detail here.

[0049] In some embodiments, the quality inspection component 5 includes an inspection support 51 connected to the base 1. The inspection support 51 is provided with a lifting slide 52. A lifting slider 53 is connected to the lifting slide 52. A rotating ball seat 54 is connected to the lifting slider 53. A rotating ball 55 is connected to the rotating ball seat 54. An industrial camera 56 is connected to the rotating ball 55. The industrial camera 56 is used to connect to a controller to analyze the captured data after the industrial camera 56 has captured the image, so as to classify the acrylic sheet for subsequent use by the controller.

[0050] In this embodiment, the lifting slide 52 and the lifting slider 53 work together to achieve vertical height adjustment of the industrial camera 56, with an adjustment range of ≥300mm and an accuracy of ±0.1mm, adapting to acrylic sheets of different thicknesses, such as 2-50mm, to meet inspection requirements and avoid image blurring caused by insufficient focal length. The rotating ball seat 54 and the rotating ball 55 support 360° horizontal rotation and ±45° pitch adjustment, allowing the industrial camera 56 to flexibly align with any curved surface or edge of the sheet material, such as irregularly shaped cut surfaces and chamfered areas, improving the defect detection rate by 15%-20%.

[0051] In some embodiments, a rotating screw 57 is rotatably connected inside the lifting slide 52, the rotating screw 57 is threadedly connected to the lifting slider 53, and a rotating disk 58 is connected to the rotating screw 57.

[0052] In this embodiment, the rotating screw 57 uses a fine-pitch thread with a pitch ≤1mm. Combined with the threaded hole of the lifting slider 53, it achieves micron-level displacement control during manual adjustment, with a movement distance ≤1mm per revolution and a single-tooth rotation adjustment accuracy ≤0.01mm. When detecting minute scratches on a 0.5mm thick acrylic sheet, the focal length of the industrial camera 56 can be precisely adjusted by fine-tuning the rotating disk 58, such as rotating it 1 / 10 of a revolution, ensuring an image clarity MTF ≥0.4@200lp / mm.

[0053] In some embodiments, a first position sensor 81, a second position sensor 82, a third position sensor 83, and a fourth position sensor 84 are connected to the base 1. These sensors are positioned at 0°, 90°, 180°, and 270° along the base 1. The first position sensor 81 is located at the loading position, the second position sensor 82 is located at the screen printing machine 4, the third position sensor 83 is located at the quality inspection component 5, and the fourth position sensor 84 is located at the unloading component 6. The first, second, third, and fourth position sensors 81 are connected to a controller. Sensors 81, 82, 83, and 84 are used to trigger the adsorption assembly 3 to open when the acrylic sheet moves to the position of the first position sensor 81, so that the acrylic sheet is stably placed on the plate placement stage 21; when the acrylic sheet moves to the position of the second position sensor 82, the controller triggers the screen printing machine 4 to run; when the acrylic sheet moves to the position of the third position sensor 83, the controller triggers the quality inspection component 5 to run; when the acrylic sheet moves to the position of the fourth position sensor 84, the controller controls the adsorption assembly 3 to close, the controller triggers the unloading component 6 to run, and simultaneously, after unloading is completed, triggers the support platform 2 to rotate in the opposite direction, so that the plate placement stage 21 moves back to the position of the first position sensor 81.

[0054] In some embodiments, the unloading component 6 includes an unloading bracket 61 and a first unloading tray 62 and a second unloading tray 63 connected to the unloading bracket 61. An unloading moving shaft 64 is connected to the unloading bracket 61, a moving slider 65 is connected to the unloading moving shaft 64, a telescopic cylinder 66 is connected to the moving slider 65, and an unloading suction tray 67 is connected to the telescopic cylinder 66.

[0055] In this embodiment, after the industrial camera 56 completes quality inspection and classification, the controller can simultaneously schedule the unloading suction tray 67 to place grade A boards into the first unloading tray 62 and grade B boards into the second unloading tray 63, with a single-piece unloading time of ≤2 seconds. The unloading moving axis 64 adopts a high-precision ball screw with a lead accuracy of ≤±0.01mm / 300mm and a linear guide rail, and a repeatability accuracy of ≤±0.005mm, driving the moving slider 65 to achieve precise movement of the X and Z axes, ensuring accurate alignment between the unloading suction tray 67 and the board on the support table 2. The telescopic cylinder 66 provides two-stage adjustment of the Y axis, with a stroke ≥100mm and a response time ≤0.1 seconds, which can adapt to different thicknesses of boards, such as a gripping height of 2-50mm, to avoid board breakage due to excessive pressure. It should be noted that the movement of the feeding axis 64 or the screen printing machine 4 mentioned in this application can also adopt a movement method similar to the X, Y, Z axis moving track mentioned in a dual Y-axis dual Z-axis gantry robot mentioned in CN215789856U, or the track movement method in a dual Z-axis wire EDM machine provided in CN210080891U. Furthermore, the movement method described in this application is not within the scope of protection of this application and is a technical means well known to those skilled in the art, and will not be elaborated upon here. In addition, to ensure that the material can be accurately placed on the first feeding tray 62 or the second feeding tray 63, the installation of position sensors on the first feeding tray 62 and the second feeding tray 63 should also fall within the scope of protection of this application.

[0056] Example 1:

[0057] The base 1 serves as the main body of the equipment, with a vacuum adsorption pump 34 fixed inside. Externally, a screen printing machine 4, a quality inspection component 5, and a feeding component 6 are sequentially installed. A platform rotation motor 71, mounted at the bottom of the base, drives the support platform 2 to rotate. A plate placement platform 21 is mounted on the top of the support platform 2, with first suction holes 31 evenly distributed on its surface. A first air pipe 32, a rigid air pipe, is fixed to a pipe support 35 and connected to a second air pipe 33, which is connected to an air pipe telescopic reel 39 mounted on the side of the base. Additionally, the inspection support 51 of the quality inspection component 5 is fixed in the middle of the base. The lifting slider 53 within its lifting slide 52 is manually adjusted by rotating a screw 57 and a rotating disk 58. A rotating ball seat 54 and a rotating ball 55 can flexibly adjust the shooting angle of the industrial camera 56. Next, the moving slider 65 slides along the axis driven by a motor, and a telescopic cylinder 66 drives the feeding adsorption plate 67 to move up and down. Below, a first feeding plate 62 (for qualified products) and a second feeding plate 63 (for unqualified products) are set. Finally, the top surface of the base is equipped with the first to fourth position sensors at 0° (loading position), 90° (screen printing position), 180° (detection position), and 270° (unloading position), respectively. These sensors are all connected to the controller to trigger the actions of each process.

[0058] The specific implementation method of this application is as follows:

[0059] In the loading process: the acrylic sheet is manually placed on the board placement platform 21 initially at 0°, i.e., the loading position, corresponding to the first position sensor 81; when the acrylic sheet blocks the first position sensor 81, the controller triggers the vacuum adsorption pump 34 to start, generating negative pressure through the second air pipe 33, the first air pipe 32, and the first suction hole 31, firmly adsorbing the sheet onto the surface of the board placement platform 21; the air pipe telescopic reel 39 can automatically retract and extend the second air pipe 33 as the support platform 2 rotates, avoiding air pipe tangling; the first rotating support ring 37 on the pipe support block 36 cooperates with the second rotating support ring 38 of the base to provide rotational support for the air pipe.

[0060] Screen printing process: The controller sends a signal to the platform rotation motor 71, whose output shaft drives the motor gear 73 to rotate. Through gear meshing, the platform gear 72 is driven to rotate the support platform 2 90° clockwise, moving the board material to below the screen printing machine 4, that is, corresponding to the second position sensor 82. When the second position sensor 82 detects that the board material is in place, it triggers the screen printing machine 4 to descend and perform screen printing operations on the surface of the acrylic board, such as printing logos and patterns. Screen printing pressure, speed and other parameters are preset through the screen printing machine control panel to ensure uniform ink adhesion.

[0061] Inspection Steps: After screen printing is completed, the support platform 2 continues to rotate 90° clockwise, moving the board material directly above the quality inspection piece 5, corresponding to the third position sensor 83. The third position sensor 83 triggers the industrial camera 56 to start. By manually rotating the rotating disk 58 and adjusting the rotating screw 57, the lifting slider 53 moves the camera up and down to the optimal shooting height. Simultaneously, the shooting angle is adjusted by rotating the ball 55 to capture high-definition images of the screen-printed content. The captured data is transmitted to the controller in real time, and the screen printing quality, such as font clarity and registration accuracy, is analyzed using a preset algorithm, resulting in a "qualified" or "unqualified" judgment.

[0062] Material unloading stage: After inspection, the support platform 2 rotates 90° clockwise again, transferring the sheet material above the unloading component 6, corresponding to the fourth position sensor 84. The fourth position sensor 84 triggers the following actions: Based on the inspection result, the controller controls the unloading moving shaft 64 to drive the moving slider 65 to move laterally, aligning the unloading suction plate 67 with the sheet material position; the telescopic cylinder 66 drives the unloading suction plate 67 to descend, adsorbing the sheet material and then lifting it up; if it is a qualified product, the moving slider 65 moves above the first unloading plate 62, and the cylinder descends to release the sheet material; if it is a defective product, it is transferred to the second unloading plate 63. After unloading is completed, the controller triggers the support platform 2 to rotate 270° counterclockwise, causing the sheet material placement platform 21 to return to the 0° loading position, entering the next cycle.

[0063] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0064] The support platform is rotatably connected to the base, allowing for flexible adjustment of the processing angle to adapt to different screen printing needs. The planar design of the board placement platform provides uniform support for the acrylic board, preventing deformation or displacement caused by uneven force, ensuring the board remains stable during screen printing, and improving printing accuracy. Several first suction holes on the surface of the board placement platform form a negative pressure adsorption system, which can quickly fix the acrylic board, replacing traditional mechanical clamps, avoiding scratches on the board surface, eliminating manual positioning errors, and accommodating rapid switching between different sized boards, thus improving processing compatibility. The base integrates the screen printing machine, quality inspection components, and unloading components in sequence, forming a continuous processing line. The screen printing machine directly connects to the fixed acrylic board, reducing intermediate handling steps; the quality inspection components scan the screen printing content in real time, using image recognition technology to detect the integrity, positional accuracy, and color deviation of text / patterns, achieving zero tolerance for defects; the unloading components automatically sort qualified and defective products based on the inspection results, avoiding human error and improving overall yield. This solves the problem that existing technologies using clamps or simple mechanical clamping devices can lead to increased scrap rates on the plates.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An acrylic sheet screen printing machine, characterized in that, The device includes a base (1) and a support platform (2) rotatably connected to the base (1). A plate placement platform (21) is connected to the support platform (2) and is used to place acrylic plates. It also includes an adsorption component (3), which includes a plurality of first suction holes (31) opened on the plate placement platform (21) and is used to adsorb acrylic plates. The base (1) is also connected in sequence to a screen printing machine (4), a quality inspection component (5), and a feeding component (6). The screen printing machine (4) is used to screen print on the acrylic plates. The quality inspection component (5) is used to inspect the content screen-printed on the acrylic plates. The feeding component (6) is used to classify the screen-printed acrylic plates according to the inspection results of the quality inspection component (5).

2. The acrylic sheet screen printing machine according to claim 1, characterized in that, It also includes a platform rotation drive (7), which includes a platform rotation motor (71) connected to the base (1) and a platform gear (72) connected to the bottom of the support platform (2). The platform gear (72) is connected to a motor gear (73), which is connected to the rotating end of the platform rotation motor (71).

3. The acrylic sheet screen printing machine according to claim 1, characterized in that, The adsorption assembly (3) includes a first air pipe (32) connected to the first suction hole (31) and a second air pipe (33) connected to the first air pipe (32). A vacuum adsorption pump (34) is connected to the second air pipe (33), and the vacuum adsorption pump (34) is fixed inside the base (1).

4. The acrylic sheet screen printing machine according to claim 3, characterized in that, The first trachea (32) is a rigid trachea, and the adsorption assembly (3) includes a tube support (35) connected to the support platform (2), and the first trachea (32) is fixed on the tube support (35).

5. The acrylic sheet screen printing machine according to claim 4, characterized in that, The adsorption assembly (3) includes a tube support block (36) connected to the support platform (2), a first rotating support ring (37) is rotatably connected to the tube support block (36), and a second rotating support ring (38) is rotatably connected to the seat (1).

6. The acrylic sheet screen printing machine according to claim 5, characterized in that, The seat (1) is connected to a telescopic reel (39) for air hoses, and the second air hose (33) is connected to the telescopic reel (39).

7. The acrylic sheet screen printing machine according to claim 1, characterized in that, The quality inspection component (5) includes an inspection support (51) connected to the base (1), a lifting slide (52) provided on the inspection support (51), a lifting slider (53) connected on the lifting slide (52), a rotating ball seat (54) connected on the lifting slider (53), a rotating ball (55) connected on the rotating ball seat (54), and an industrial camera (56) connected on the rotating ball (55). The industrial camera (56) is used to connect to the controller so that after the industrial camera (56) takes pictures, the captured data is analyzed so that the controller can classify the acrylic sheet in the future.

8. The acrylic sheet screen printing machine according to claim 7, characterized in that, A rotating screw (57) is rotatably connected inside the lifting slide (52). The rotating screw (57) is threadedly connected to the lifting slider (53). A rotating disk (58) is connected to the rotating screw (57).

9. An acrylic sheet screen printing machine according to claim 1, characterized in that, A first position sensor (81), a second position sensor (82), a third position sensor (83), and a fourth position sensor (84) are connected to the base (1). The first position sensor (81), the second position sensor (82), the third position sensor (83), and the fourth position sensor (84) are set on the base (1) at 0°, 90°, 180°, and 270°. The first position sensor (81) is located at the loading position, the second position sensor (82) is located at the screen printing machine (4), the third position sensor (83) is located at the quality inspection piece (5), and the fourth position sensor (84) is located at the unloading piece (6). The first position sensor (81), the second position sensor (82), the third position sensor (83), and the fourth position sensor (84) are connected to the controller. Sensors (81), second position sensor (82), third position sensor (83), and fourth position sensor (84) are used to trigger the adsorption assembly (3) to open when the acrylic plate moves to the position of the first position sensor (81), so that the acrylic plate is stably placed on the plate placement platform (21); when the acrylic plate moves to the position of the second position sensor (82), the controller triggers the screen printing machine (4) to run; when the acrylic plate moves to the position of the third position sensor (83), the controller triggers the quality inspection component (5) to run; when the acrylic plate moves to the position of the fourth position sensor (84), the controller controls the adsorption assembly (3) to close, the controller triggers the unloading component (6) to run, and at the same time, after the unloading is completed, the controller triggers the support platform (2) to rotate in the opposite direction, so that the plate placement platform (21) moves back to the position of the first position sensor (81).

10. An acrylic sheet screen printing machine according to claim 1, characterized in that, The unloading component (6) includes an unloading bracket (61) and a first unloading plate (62) and a second unloading plate (63) connected to the unloading bracket (61). An unloading moving shaft (64) is connected to the unloading bracket (61), a moving slider (65) is connected to the unloading moving shaft (64), a telescopic cylinder (66) is connected to the moving slider (65), and an unloading suction plate (67) is connected to the telescopic cylinder (66).

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