Intelligent control system and method for silk-screen printing spraying on surface of glass product

Abstract

The invention relates to a glass product surface silk-screen printing spraying intelligent control system which comprises a data communication bus, a main control mechanism, a movable objective table and a scraper monitoring mechanism. Data connection is established with the mobile objective table, the scraper monitoring mechanism and a main control circuit of the screen printing machine through a data communication bus, and the mobile objective table is connected with a conveying table of the screen printing machine. The using method comprises the three steps of system assembling, printing control and printing operation. The system is high in integration and modularization degree, capable of effectively meeting the requirement for being used in cooperation with various screen printing machines, convenient to assemble, operate, control and maintain and low in cost. On one hand, the requirement for surface quality detection work of a glass substrate to be printed can be effectively met; on the other hand, whole-process monitoring and data feedback can be carried out on the glass printing operation state, and therefore the work quality of silk-screen printing operation is improved.

Description

Technical Field

[0001] The invention relates to an intelligent control system and method for screen printing spraying on the surface of a glass product, belonging to the technical field of screen printing. Background Art

[0002] At present, in the screen printing processing of glass products, the glass has good light transmittance, the surface quality of the glass is required to be high, and the surface of glass products is often curved or has concave and convex patterns, which greatly increases the difficulty of printing. In the current printing process, the glass to be printed is mainly detected, identified and positioned by various sensors and other equipment set by the screen printing machine itself. Although it can meet the needs of screen printing processing on the glass surface to a certain extent, it lacks effective positioning detection of the processed glass, accurate detection and data feedback of the printing position, the working state of the scraper during printing, and the surface quality of the printed product during processing, resulting in the current glass screen printing often requiring manual assistance and external third-party equipment to assist in positioning detection, which seriously affects the working accuracy and efficiency of the processing operation.

[0003] In view of this problem, it is urgent to develop an intelligent control system and method for screen printing spraying on the surface of glass products to meet the needs of practical work. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the system of the present invention is highly integrated and modularized, and can effectively meet the needs of being used with various screen printing machines. It is easy to assemble, operate and maintain, and has low costs. On the one hand, it can effectively meet the needs of surface quality inspection of glass substrates to be printed; on the other hand, it can monitor the glass printing operation status throughout the process and provide data feedback, thereby improving the work quality of screen printing operations.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A screen printing spraying intelligent control system for the surface of glass products, comprising a data communication bus, a main control mechanism, a mobile stage and a scraper monitoring mechanism, wherein the main control mechanism is located in the main control box of a screen printing machine, and establishes data connections with the mobile stage, the scraper monitoring mechanism and the main control circuit of the screen printing machine through the data communication bus, wherein the mobile stage is connected to the conveying platform of the screen printing machine, and is slidably connected to the conveying platform and the screen printing machine, the scraper monitoring mechanism comprises an inclination sensor, a pressure sensor, a temperature sensor, a CCD camera, a fill light and a control terminal, the inclination sensor is connected to the outer side of the scraper of the screen printing machine, and there are several pressure sensors, wherein the scraper and the scraper driving mechanism are connected through at least two pressure sensors evenly distributed along the scraper axis direction, and at the same time, the screen and the screen printing frame are connected through a plurality of pressure sensors evenly distributed along the scraper axis direction. The pressure sensor evenly distributed around the axis of the silk screen is connected, at least two CCD cameras are connected to the side of the silk screen printing frame corresponding to one end of the scraper, and the optical axis of the CCD camera intersects with the surface of the silk screen and is 3°-15°, a number of fill lights are connected to the side of the silk screen printing frame corresponding to the other end of the scraper, and are evenly distributed along the axis direction of the silk screen printing frame, and the optical axis of each fill light intersects with the surface of the silk screen and is 3°-15°, at least four temperature sensors are evenly distributed around the axis of the silk screen printing frame, connected to the inner side of the silk screen printing frame and located above the silk screen, the inclination sensor, the pressure sensor, the temperature sensor, the CCD camera and the fill light are all electrically connected to the control terminal, the control terminal is connected to the outer side of the silk screen printing frame, and establishes a data connection with the main control mechanism through a data communication bus, and is also electrically connected to the main control circuit of the silk screen printing machine.

[0006] Furthermore, the mobile stage includes a bearing base, a horizontal driving guide rail, a vertical driving guide rail, a slider, a positioning fixture, a pressure sensor, a stroke sensor, a lifting drive mechanism, a non-contact thickness gauge, a CCD camera, a fill light, a bracket, a connecting arm, a flip mechanism, a detection platform and a control terminal. The bearing base is a rectangular frame structure and is connected to the conveying table of the screen printing machine. There are at least two horizontal driving guide rails, which are symmetrically distributed on both sides of the axis of the conveying table of the screen printing machine and parallel to the axis of the conveying table of the screen printing machine. The rear end surfaces at both ends of the horizontal driving guide rails are slidably connected to a vertical driving guide rail through a slider, and the axis of the vertical driving guide rail is perpendicular to the surface of the conveying table of the screen printing machine. The horizontal driving guide rail is slidably connected to at least two sliders, and a stroke sensor is arranged on the slider. At the same time, a lifting drive mechanism coaxially distributed with the front end surface of the horizontal driving guide rail is arranged in the slider connected to the front end surface of the horizontal driving guide rail. The upper end surface of the driving mechanism is connected to the positioning fixture through a pressure sensor, the detection platform is coaxially distributed with the bearing base and is located below the upper end surface of the positioning fixture, the detection platform is hinged with the bracket through a flipping mechanism, and rotates in the range of 0°-360° through the flipping mechanism, and the outer side surface of the bracket is connected to the lower end surface of the slider slidably connected to the horizontal driving guide rail through a connecting arm, a non-contact thickness gauge coaxially distributed with the upper end surface of the detection platform is provided, a CCD camera coaxially distributed with the lower end surface is provided, and a number of fill lights uniformly distributed around the CCD camera are provided, the horizontal driving guide rail, the vertical driving guide rail, the pressure sensor, the stroke sensor, the lifting drive mechanism, the non-contact thickness gauge, the CCD camera, the fill light and the flipping mechanism are all connected to the control terminal, the control terminal is connected to the main control mechanism through a data communication bus, and is electrically connected to the main control circuit of the screen printing machine, and the control terminal is connected to the outer side surface of the bearing base.

[0007] Furthermore, the lifting drive mechanism is any one of a screw mechanism and a gear rack structure; the connecting arm is at least a two-stage elastic telescopic rod, and the two ends of the connecting arm are respectively hinged to the slider and the outer side of the bracket through elastic hinges; the positioning fixture is an electric suction cup.

[0008] Furthermore, the detection platform is a columnar structure with a rectangular axial cross-section, and a grading marking mechanism coaxially distributed therewith is provided on the lower end surface of the detection platform, wherein the grading marking mechanism is covered outside the CCD camera and the fill light, and is slidably connected to the outer side surface of the detection platform through at least two lifting drive mechanisms.

[0009] Furthermore, the grading marking mechanism includes a protective cover, a grading plate and a fill light strip, wherein the protective cover is a hollow tubular structure coaxially distributed with the detection platform, the lower half of the protective cover is covered outside the detection platform, and is slidably connected to the detection platform through a lifting drive mechanism, the grading plate is embedded in the upper end surface of the protective cover and coaxially distributed with the protective cover, the fill light strip is a closed ring structure coaxially distributed with the grading plate, covered on the outside of the grading plate and embedded in the inner surface of the protective cover, the optical axes of the light-emitting bodies in the fill light strip intersect and the intersection is located at the center of the grading plate, and the fill light strip and the lifting drive mechanism are electrically connected with the control terminal.

[0010] Furthermore, the control terminal includes an insulating electric control box, a control circuit based on a programmable controller, a communication circuit, a multi-channel voltage-regulated power supply and wiring terminals, wherein the control circuit based on the programmable controller, the communication circuit and the multi-channel voltage-regulated power supply are all located in the electric control box, wherein the control circuit based on the programmable controller is electrically connected to the communication circuit and the multi-channel voltage-regulated power supply respectively, and the communication circuit and the multi-channel voltage-regulated power supply are also electrically connected to the wiring terminals, and at least one of the wiring terminals is embedded in the outer side of the insulating electric control box.

[0011] Furthermore, the main control mechanism includes a sliding bar, an insulating backplane, a connecting column, a PID controller, a control circuit based on a programmable controller, a multi-channel voltage-regulated power supply, a drive circuit and an I / O communication port circuit. The insulating backplane is a groove-shaped structure with an "H"-shaped cross-section. The control circuit based on the programmable controller, the PID controller and the multi-channel voltage-regulated power supply are respectively connected to an insulating backplane. The drive circuit and the I / O communication port circuit are distributed on the same insulating backplane, and the insulating backplanes are distributed parallel to each other and connected to each other through a number of connecting columns. The PID controller and the control circuit based on the programmable controller are both electrically connected to the drive circuit and the multi-channel voltage-regulated power supply. At the same time, the drive circuit is also electrically connected to the I / O communication port circuit, and the I / O communication port circuit is also connected to the data communication bus and the main control circuit of the screen printer.

[0012] An intelligent control system for screen printing and spraying on the surface of glass products, comprising the following steps: S1, system assembly, firstly assemble the data communication bus, main control mechanism, mobile stage and scraper monitoring mechanism to the designated positions of the screen printing machine, and electrically connect them with the main control circuit system of the screen printing machine, and establish data connection, so as to realize the synchronous operation of the data communication bus, main control mechanism, mobile stage, scraper monitoring mechanism and the screen printing machine; S2, printing control, the processed glass substrate to be printed is mounted on the mobile stage for positioning. First, the mobile stage detects the positioning state of the glass substrate carried by it through the pressure sensor, and adjusts the positioning position of the glass substrate to make the detection values ​​of each pressure sensor consistent; then the non-contact thickness gauge is driven to detect the thickness of the glass substrate and store the data; finally, the printing area of ​​the glass substrate is identified and confirmed through the CCD camera, the fill light and the dividing marking mechanism on the detection stage, and the position of the glass substrate is adjusted through the coordinated operation of the horizontal driving guide rail and the vertical driving guide rail, so that the area of ​​the glass substrate to be printed is located in the set printing operation area; S3, printing operation, after completing step S2, the adjusted glass substrate is transferred to the printing table of the screen printing machine by the mobile stage, and the printing table performs printing operation; during the printing operation, the scraper monitoring mechanism is first set to detect the working temperature of the glass substrate to be printed through the temperature sensor; then the CCD camera and the fill light are driven to operate, and the quality of the printed surface of the unprinted glass substrate is first inspected, and after the quality inspection is completed and the quality is qualified, the screen printing machine is driven to operate and perform printing operation, and during the printing operation, the inclination angle of the scraper is detected by the inclination sensor, and the operating pressure of the scraper during the printing operation is detected by the pressure sensor; finally, after the printing operation is completed, the CCD camera and the fill light are used to jointly detect the quality of the printed pattern and the surface quality of the glass substrate, and the thickness of the printed glass substrate is detected by the non-contact thickness gauge of the mobile stage, so as to obtain the accurate thickness of the coating layer in the printed pattern area, and after the inspection is completed, the mobile stage transfers the printed glass substrate to the subsequent processing steps.

[0013] The beneficial effects of the present invention are: The system of the present invention has a high degree of integration and modularization, and can effectively meet the needs of supporting use with various screen printing machines. It is easy to assemble, operate and maintain, and has low cost. On the one hand, it can effectively meet the needs of surface quality inspection of glass substrates to be printed; on the other hand, it can monitor the glass printing operation status throughout the process and provide data feedback, thereby improving the work quality of screen printing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments; Figure 1 It is a schematic diagram of the system structure of the present invention; Figure 2 It is a schematic diagram of the partial structure of the scraper monitoring mechanism when viewed from above; Figure 3 It is a schematic diagram of the partial structure of the cross-section of the scraper monitoring mechanism; Figure 4 It is a schematic diagram of the partial structure of the mobile stage in cross section; Figure 5 It is a schematic diagram of the structure of the mobile stage from a top view; Figure 6 It is a schematic diagram of the local structure of the division marking mechanism; Figure 7 It is a schematic diagram of the control terminal structure; Figure 8 This is a schematic diagram of the main control mechanism structure. DETAILED DESCRIPTION

[0015] In order to facilitate the construction of the technical means, creative features, objectives and effects achieved by the present invention, the present invention is further described below in conjunction with specific implementation methods.

[0016] like Figure 1-Figure 8 As shown, an intelligent control system for screen printing spraying on the surface of a glass product includes a data communication bus 1, a main control mechanism 2, a movable stage 3 and a scraper monitoring mechanism 4, wherein the main control mechanism 2 is located in a main control box of a screen printing machine, and establishes data connections with the movable stage 3, the scraper monitoring mechanism 4 and the main control circuit of the screen printing machine through the data communication bus 2, wherein the movable stage 3 is connected to the conveying platform of the screen printing machine, and is slidably connected to the screen printing machine through the conveying platform.

[0017] In this embodiment, the scraper monitoring mechanism 4 includes an inclination sensor 41, a pressure sensor 42, a temperature sensor 43, a CCD camera 44, a fill light 45 and a control terminal 46. The inclination sensor 41 is connected to the outer side of the scraper 101 of the screen printing machine. There are a plurality of pressure sensors 42, wherein the scraper 101 and the scraper driving mechanism 102 are connected through at least two pressure sensors 42 uniformly distributed along the scraper axis direction, and the screen 104 and the screen printing frame 103 are connected through a plurality of pressure sensors 42 uniformly distributed around the screen axis. There are at least two CCD cameras 44, which are connected to the side of the screen printing frame 103 corresponding to one end of the scraper 101, and the optical axis of the CCD camera 44 intersects with the surface of the screen 104 and is 3°- 15°, a plurality of fill lights 45 are connected to the side of the screen printing frame 103 corresponding to the other end of the scraper 101, and are evenly distributed along the axis direction of the screen printing frame 103, and the optical axes of the fill lights 45 intersect with the surface of the screen 104 and are 3°-15°, at least four temperature sensors 43 are evenly distributed around the axis of the screen printing frame 103, connected to the inner side of the screen printing frame 103 and located above the screen 104, the inclination sensor 41, the pressure sensor 42, the temperature sensor 43, the CCD camera 44 and the fill lights 45 are all electrically connected to the control terminal 46, the control terminal 46 is connected to the outer side of the screen printing frame 103, and establishes a data connection with the main control mechanism 2 through the data communication bus 1, and is also electrically connected to the main control circuit of the screen printing machine.

[0018] It is emphasized that the mobile stage 3 includes a bearing base 31, a horizontal driving guide rail 32, a vertical driving guide rail 33, a slider 34, a positioning fixture 35, a pressure sensor 42, a stroke sensor 36, a lifting drive mechanism 37, a non-contact thickness gauge 38, a CCD camera 44, a fill light 45, a bracket 39, a connecting arm 30, a flip mechanism 301, a detection table 302 and a control terminal 46. The bearing base 31 is a rectangular frame structure and is connected to the conveying table of the screen printing machine. The horizontal driving guide rails 32 are at least two and are symmetrically distributed on the screen printing machine. The horizontal driving guide rail 32 is arranged on both sides of the axis of the conveying platform and is parallel to the axis of the conveying platform of the screen printing machine. The rear end surfaces of both ends of the horizontal driving guide rail 32 are slidably connected to a vertical driving guide rail 33 through a slider 34, and the axis of the vertical driving guide rail 33 is perpendicular to the surface of the conveying platform of the screen printing machine. The horizontal driving guide rail is slidably connected to at least two sliders 34, and a stroke sensor 36 is arranged on each slider 34. At the same time, a lifting drive mechanism 37 coaxially distributed therewith is arranged in the slider 34 connected to the front end surface of the horizontal driving guide rail 32. The lifting drive mechanism 37 The upper end surface is connected to the positioning fixture 35 through a pressure sensor 42. The detection platform 302 is coaxially distributed with the bearing base 31 and is located below the upper end surface of the positioning fixture 35. The detection platform 302 is hinged with the bracket 39 through a flip mechanism 301 and rotates within a range of 0°-360° through the flip mechanism 301. At the same time, the outer side of the bracket 39 is connected to the lower end surface of the slider 34 that is slidably connected to the horizontal driving guide rail 32 through the connecting arm 30. The upper end surface of the detection platform 302 is provided with a non-contact thickness gauge 38 coaxially distributed therewith and a CC coaxially distributed therewith is provided on the lower end surface. D camera 44, and several fill lights 45 evenly distributed around the CCD camera 44, the horizontal drive rail 32, the vertical drive rail 33, the pressure sensor 42, the stroke sensor 36, the lifting drive mechanism 37, the non-contact thickness gauge 38, the CCD camera 44, the fill light 45 and the flip mechanism 301 are all connected to the control terminal 46 to establish a data connection, the control terminal 46 is connected to the main control mechanism 2 through the data communication bus 1, and is also electrically connected to the main control circuit of the screen printing machine, and the control terminal 46 is connected to the outer side of the supporting base 31.

[0019] The turning mechanism can realize the flexible turning and adjustment of the testing table, and the switching and adjustment of the non-contact thickness gauge and CCD camera can be realized by turning the testing table.

[0020] In this embodiment, the lifting drive mechanism 37 is any one of a screw mechanism and a gear rack structure; the connecting arm 30 is at least a two-stage elastic telescopic rod, and the two ends of the connecting arm 30 are respectively hinged to the slider 34 and the outer side of the bracket 39 through elastic hinges; the positioning fixture 35 is an electric suction cup.

[0021] At the same time, the detection platform 302 is a columnar structure with a rectangular axial cross-section, and a dividing marking mechanism 303 coaxially distributed therewith is provided on the lower end face of the detection platform 302, wherein the dividing marking mechanism 303 is covered outside the CCD camera 44 and the fill light 45, and is slidably connected to the outer side surface of the detection platform 302 through at least two lifting drive mechanisms 37.

[0022] It is particularly noted that the grading marking mechanism 303 includes a protective cover 3031, a grading plate 3032 and a fill light strip 3033, wherein the protective cover 3031 is a hollow tubular structure coaxially distributed with the detection platform 302, the lower half of the protective cover 3031 is covered on the outside of the detection platform 302, and is slidably connected to the detection platform 302 through a lifting drive mechanism 37, the grading plate 3032 is embedded in the upper end surface of the protective cover 3031 and is coaxially distributed with the protective cover 3031, the fill light strip 3032 is a closed ring structure coaxially distributed with the grading plate 3032, covered on the outside of the grading plate 3032 and embedded in the inner surface of the protective cover 3031, the optical axes of the light-emitting bodies in the fill light strip 3033 intersect and the intersection is located at the center of the grading plate 3032, and the fill light strip 3033 and the lifting drive mechanism 37 are electrically connected with the control terminal 46.

[0023] By setting the graticule, the CCD camera can directly obtain differentiated measurement according to a specific array arrangement during image signal recognition, thereby obtaining an accurate surface area range of the printing area on the glass surface, thereby improving the accuracy of positioning the glass substrate to be printed, and can accurately measure the printing range after the printing job is completed, thereby improving the accuracy of the printing operation.

[0024] In this embodiment, the control terminal 46 includes an insulating electric control box 461, a control circuit 462 based on a programmable controller, a communication circuit 463, a multi-channel voltage-regulated power supply 464 and a wiring terminal 465. The control circuit 462 based on a programmable controller, the communication circuit 463 and the multi-channel voltage-regulated power supply 464 are all located in the electric control box 461, wherein the control circuit 462 based on a programmable controller is electrically connected to the communication circuit 463 and the multi-channel voltage-regulated power supply 464 respectively, and the communication circuit 463 and the multi-channel voltage-regulated power supply 464 are also electrically connected to the wiring terminal 465, and at least one of the wiring terminals 465 is embedded in the outer side of the insulating electric control box 461.

[0025] In this embodiment, the main control mechanism 2 includes a slide bar 21, an insulating backplane 22, a connecting column 23, a PID controller 24, a control circuit 462 based on a programmable controller, a multi-channel voltage-stabilized power supply 464, a drive circuit 465 and an I / O communication port circuit 466. The insulating backplane 22 is a groove-shaped structure with an "H"-shaped cross section. The control circuit 462 based on a programmable controller, the PID controller 24 and the multi-channel voltage-stabilized power supply 464 are respectively connected to an insulating backplane 22. The drive circuit 465 and the I / O communication port circuit 466 are distributed on the same insulating backplane 22, and the insulating backplanes 22 are distributed parallel to each other and connected to each other through a number of connecting columns 23. The PID controller 24 and the control circuit 462 based on a programmable controller are both electrically connected to the drive circuit 465 and the multi-channel voltage-stabilized power supply 464. At the same time, the drive circuit 465 is also electrically connected to the I / O communication port circuit 466. The I / O communication port circuit 466 is also connected to the data communication bus 1 and the main control circuit of the screen printer.

[0026] The structure of connecting multiple insulating backboards with connecting columns can effectively improve the integration and modularization of the equipment, and improve the convenience and flexibility of circuit system adjustment and parts replacement. At the same time, the sliding bar can meet the needs of the main control mechanism for rapid assembly and positioning.

[0027] An intelligent control system for screen printing and spraying on the surface of glass products, comprising the following steps: S1, system assembly, firstly assemble the data communication bus, main control mechanism, mobile stage and scraper monitoring mechanism to the designated positions of the screen printing machine, and electrically connect them with the main control circuit system of the screen printing machine, and establish data connection, so as to realize the synchronous operation of the data communication bus, main control mechanism, mobile stage, scraper monitoring mechanism and the screen printing machine; S2, printing control, the processed glass substrate to be printed is mounted on the mobile stage for positioning. First, the mobile stage detects the positioning state of the glass substrate carried by it through the pressure sensor, and adjusts the positioning position of the glass substrate to make the detection values ​​of each pressure sensor consistent; then the non-contact thickness gauge is driven to detect the thickness of the glass substrate and store the data; finally, the printing area of ​​the glass substrate is identified and confirmed through the CCD camera, the fill light and the dividing marking mechanism on the detection stage, and the position of the glass substrate is adjusted through the coordinated operation of the horizontal driving guide rail and the vertical driving guide rail, so that the area of ​​the glass substrate to be printed is located in the set printing operation area; S3, printing operation, after completing step S2, the adjusted glass substrate is transferred to the printing table of the screen printing machine by the mobile stage, and the printing table performs printing operation; during the printing operation, the scraper monitoring mechanism is first set to detect the working temperature of the glass substrate to be printed through the temperature sensor; then the CCD camera and the fill light are driven to operate, and the quality of the printed surface of the unprinted glass substrate is first inspected, and after the quality inspection is completed and the quality is qualified, the screen printing machine is driven to operate and perform printing operation, and during the printing operation, the inclination angle of the scraper is detected by the inclination sensor, and the operating pressure of the scraper during the printing operation is detected by the pressure sensor; finally, after the printing operation is completed, the CCD camera and the fill light are used to jointly detect the quality of the printed pattern and the surface quality of the glass substrate, and the thickness of the printed glass substrate is detected by the non-contact thickness gauge of the mobile stage, so as to obtain the accurate thickness of the coating layer in the printed pattern area, and after the inspection is completed, the mobile stage transfers the printed glass substrate to the subsequent processing steps.

[0028] The system of the present invention has a high degree of integration and modularization, and can effectively meet the needs of supporting use with various screen printing machines. It is easy to assemble, operate and maintain, and has low cost. On the one hand, it can effectively meet the needs of surface quality inspection of glass substrates to be printed; on the other hand, it can monitor the glass printing operation status throughout the process, thereby improving the work quality of screen printing operations.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An intelligent control system for screen printing and spraying on the surface of glass products, characterized in that: The screen printing spraying intelligent control system for the surface of the glass product comprises a data communication bus, a main control mechanism, a mobile stage and a scraper monitoring mechanism. The main control mechanism is located in the main control box of the screen printing machine, and establishes data connections with the mobile stage, the scraper monitoring mechanism and the main control circuit of the screen printing machine through the data communication bus. The mobile stage is connected to the conveying table of the screen printing machine. The scraper monitoring mechanism comprises an inclination sensor, a pressure sensor, a temperature sensor, a CCD camera, a fill light and a control terminal. The inclination sensor is connected to the outer side of the scraper of the screen printing machine. There are several pressure sensors, wherein the scraper and the scraper driving mechanism are connected by at least two pressure sensors evenly distributed along the scraper axis direction. The force sensor is connected, and the screen and the screen printing frame are connected through a plurality of pressure sensors evenly distributed around the axis of the screen. There are at least two CCD cameras connected to the side of the screen printing frame corresponding to one end of the scraper. There are a plurality of fill lights connected to the side of the screen printing frame corresponding to the other end of the scraper. There are at least four temperature sensors evenly distributed around the axis of the screen printing frame and connected to the inner side of the screen printing frame. The inclination sensor, pressure sensor, temperature sensor, CCD camera and fill light are all electrically connected to the control terminal. The control terminal is connected to the outer side of the screen printing frame, and establishes a data connection with the main control mechanism through a data communication bus, and is also electrically connected to the main control circuit of the screen printing machine.

2. The screen printing spraying intelligent control system for glass product surface according to claim 1, characterized in that: The movable stage comprises a bearing base, a horizontal driving guide rail, a vertical driving guide rail, a slider, a positioning fixture, a pressure sensor, a stroke sensor, a lifting drive mechanism, a non-contact thickness gauge, a CCD camera, a fill light, a bracket, a connecting arm, a flip mechanism, a detection platform and a control terminal. The bearing base is a rectangular frame structure and is connected to the conveying platform of the screen printing machine. There are at least two horizontal driving guide rails, which are symmetrically distributed on both sides of the axis of the conveying platform of the screen printing machine and parallel to the axis of the conveying platform of the screen printing machine. The rear end surfaces at both ends of the horizontal driving guide rail are slidably connected to a vertical driving guide rail through a slider, and the axis of the vertical driving guide rail is perpendicular to the surface of the conveying platform of the screen printing machine. The horizontal driving guide rail is slidably connected to at least two sliders, and a stroke sensor is arranged on each slider. At the same time, a lifting drive mechanism coaxially distributed with the front end surface of the horizontal driving guide rail is arranged in the slider connected to the front end surface of the horizontal driving guide rail. The upper end surface of the structure is connected to the positioning fixture through a pressure sensor, the detection platform is coaxially distributed with the bearing base and is located below the upper end surface of the positioning fixture, the detection platform is hinged with the bracket through a flipping mechanism, and is rotated in the range of 0°-360° through the flipping mechanism, and the outer side surface of the bracket is connected to the lower end surface of the slider slidably connected to the horizontal driving guide rail through a connecting arm, a non-contact thickness gauge coaxially distributed with the upper end surface of the detection platform is provided, and a CCD camera coaxially distributed with the lower end surface is provided, and a number of fill lights uniformly distributed around the CCD camera are provided, the horizontal driving guide rail, the vertical driving guide rail, the pressure sensor, the stroke sensor, the lifting drive mechanism, the non-contact thickness gauge, the CCD camera, the fill light and the flipping mechanism are all connected to the control terminal, the control terminal is connected to the main control mechanism through a data communication bus, and is electrically connected to the main control circuit of the screen printing machine, and the control terminal is connected to the outer side surface of the bearing base.

3. The screen printing spraying intelligent control system for glass product surface according to claim 2, characterized in that: The lifting drive mechanism is any one of a screw mechanism and a gear rack structure; the connecting arm is at least a two-stage elastic telescopic rod, and the two ends of the connecting arm are respectively hinged to the slider and the outer side of the bracket through elastic hinges; the positioning fixture is an electric suction cup.

4. The screen printing spraying intelligent control system for glass product surface according to claim 2, characterized in that: The detection platform is a columnar structure with a rectangular axial cross-section. A grading marking mechanism coaxially distributed therewith is provided on the lower end surface of the detection platform, wherein the grading marking mechanism is covered outside the CCD camera and the fill light, and is slidably connected to the outer side surface of the detection platform through at least two lifting drive mechanisms.

5. The intelligent control system for screen printing and spraying on the surface of glass products according to claim 4, characterized in that: The grating marking mechanism includes a protective cover, a grating plate and a fill light strip, wherein the protective cover is a hollow tubular structure coaxially distributed with the detection platform, the lower half of the protective cover is coated on the outside of the detection platform, and is slidably connected to the detection platform through a lifting drive mechanism, the grating plate is embedded in the upper end surface of the protective cover and coaxially distributed with the protective cover, the fill light strip is a closed ring structure coaxially distributed with the grating plate, coated on the outside of the grating plate and embedded in the inner side surface of the protective cover, the optical axes of the light-emitting bodies in the fill light strip intersect and the intersection is located at the center of the grating plate, and the fill light strip and the lifting drive mechanism are electrically connected with the control terminal.

6. The screen printing spraying intelligent control system for glass product surface according to claim 1 or 2, characterized in that: The control terminal includes an insulating electric control box, a control circuit based on a programmable controller, a communication circuit, a multi-channel voltage-regulated power supply and wiring terminals. The control circuit based on the programmable controller, the communication circuit and the multi-channel voltage-regulated power supply are all located in the electric control box, wherein the control circuit based on the programmable controller is electrically connected to the communication circuit and the multi-channel voltage-regulated power supply respectively, and the communication circuit and the multi-channel voltage-regulated power supply are also electrically connected to the wiring terminals, and at least one of the wiring terminals is embedded in the outer side of the insulating electric control box.

7. The screen printing spraying intelligent control system for glass product surface according to claim 1, characterized in that: The main control mechanism includes a slide bar, an insulating backplane, a connecting column, a PID controller, a control circuit based on a programmable controller, a multi-channel voltage-stabilized power supply, a drive circuit and an I / O communication port circuit. The insulating backplane is a groove-shaped structure with an "H"-shaped cross section. The control circuit based on the programmable controller, the PID controller and the multi-channel voltage-stabilized power supply are respectively connected to an insulating backplane. The drive circuit and the I / O communication port circuit are distributed on the same insulating backplane, and the insulating backplanes are distributed parallel to each other and connected to each other through a number of connecting columns. The PID controller and the control circuit based on the programmable controller are both electrically connected to the drive circuit and the multi-channel voltage-stabilized power supply. At the same time, the drive circuit is also electrically connected to the I / O communication port circuit. The I / O communication port circuit is also connected to a data communication bus and the main control circuit of the screen printer.

8. The screen printing spraying intelligent control system for glass product surface according to claim 1, characterized in that: The method for using the screen printing spraying intelligent control system for the surface of glass products comprises the following steps: S1, system assembly, firstly assemble the data communication bus, main control mechanism, mobile stage and scraper monitoring mechanism to the designated positions of the screen printing machine, and electrically connect them with the main control circuit system of the screen printing machine, and establish data connection, so as to realize the synchronous operation of the data communication bus, main control mechanism, mobile stage, scraper monitoring mechanism and the screen printing machine; S2, printing control, firstly, the processed glass substrate to be printed is mounted on the mobile stage for positioning, firstly, the mobile stage detects the positioning state of the glass substrate carried by it through the pressure sensor, and adjusts the positioning position of the glass substrate so that the detection values ​​of each pressure sensor are consistent; then, the non-contact thickness gauge is driven to detect the thickness of the glass substrate and store the data; finally, the printing area of ​​the glass substrate is identified and confirmed through the CCD camera, the fill light and the dividing marking mechanism on the detection stage, and the position of the glass substrate is adjusted through the coordinated operation of the horizontal driving guide rail and the vertical driving guide rail so that the area to be printed on the glass substrate is located within the set printing operation area; S3, printing operation, after completing step S2, the adjusted glass substrate is transferred to the printing table of the screen printing machine by the mobile stage, and the printing table performs printing operation; during the printing operation, the scraper monitoring mechanism is first set to detect the working temperature of the glass substrate to be printed through the temperature sensor; then the CCD camera and the fill light are driven to operate, and the quality of the printed surface of the unprinted glass substrate is first inspected, and after the quality inspection is completed and the quality is qualified, the screen printing machine is driven to operate and perform printing operation, and during the printing operation, the inclination angle of the scraper is detected by the inclination sensor, and the operating pressure of the scraper during the printing operation is detected by the pressure sensor; finally, after the printing operation is completed, the CCD camera and the fill light are used to jointly detect the quality of the printed pattern and the surface quality of the glass substrate, and the thickness of the printed glass substrate is detected by the non-contact thickness gauge of the mobile stage, so as to obtain the accurate thickness of the coating layer in the printed pattern area, and after the inspection is completed, the mobile stage transfers the printed glass substrate to the subsequent processing steps.

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