Automatic steel mesh replacement system and method of PCB printing machine and storage medium

Abstract

The invention relates to the technical field of PCB printing machines, in particular to an automatic steel mesh replacement system and method of a PCB printing machine and a storage medium, and aims to improve the steel mesh replacement efficiency. According to the system part, before the PCB printing machine starts to run automatically, whether a steel mesh is installed on a printing platform or not is detected through a steel mesh sensor; if the steel mesh does not exist, the PCB printing machine sends a first steel mesh replacement requirement to a steel mesh replacement dispatching desk, so that the steel mesh replacement dispatching desk responds to the first steel mesh replacement requirement to dispatch a transfer robot to transfer a new first steel mesh to a steel mesh automatic replacement position and convey the first steel mesh to a steel mesh replacement inlet of the PCB printing machine; and when the PCB printing machine receives a request which is fed back by the steel mesh replacement dispatching desk and indicates that the first steel mesh is delivered, the PCB printing machine positions the first steel mesh at the steel mesh replacement inlet to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printing machine starts to run automatically.

Description

Technical Field

[0001] The present application relates to the technical field of PCB printers, and in particular to a steel mesh automatic replacement system, method and storage medium for a PCB printer. Background Art

[0002] ‌‌PCB printer is a device used for printed circuit boards (PCBs) that prints circuit patterns onto PCB circuit boards through screen printing technology.

[0003] The PCB printer's stencil is a metal mesh used in the manufacturing process of printed circuit boards (PCBs). The main functions of the stencil include helping the deposition of solder paste, accurately coating the solder paste on the solder paste layer of the PCB, and ensuring the accuracy and quality of the circuit board during processing. The PCB printer's stencil precisely coats the solder paste on the solder paste layer of the PCB to ensure that the exact amount of solder paste is transferred to the exact location on the PCB, thereby achieving the correct pasting of electronic components. In addition, the stencil can also be used to guide and position the solder paste to ensure that the components are properly adhered to the surface of the PCB, thereby protecting the components on the circuit board and improving production efficiency.

[0004] In the existing solutions, the steel mesh of the PCB printer is mainly replaced through manual inspection and replacement, which has a low degree of intelligence and a relatively low replacement efficiency. Summary of the invention

[0005] The present application provides a system, method and storage medium for automatically replacing steel meshes of a PCB printer, which are used to realize automatic replacement of steel meshes of a PCB printer and improve the efficiency of steel mesh replacement.

[0006] In a first aspect, a steel mesh automatic replacement system for a PCB printer is provided, wherein the steel mesh automatic replacement system comprises a PCB printer, a steel mesh replacement dispatching station, and a handling robot, wherein: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform; If there is no stencil, the PCB printer sends a first stencil replacement requirement to the stencil replacement dispatching station, so that the stencil replacement dispatching station responds to the first stencil replacement requirement to dispatch the transport robot to transport the new first stencil to the stencil automatic replacement position and send the first stencil to the stencil replacement entrance of the PCB printer; When the PCB printer receives the request from the steel mesh replacement dispatch desk that the first steel mesh has been delivered, the PCB printer positions the first steel mesh at the steel mesh replacement entrance to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printer starts to run automatically.

[0007] Further, after the PCB printer reaches the first preset time period in automatic operation, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand to dispatch the transport robot to transport the second steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the first steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the second steel mesh to the steel mesh replacement entrance, and the PCB printer automatically positions the second steel mesh at the steel mesh replacement entrance through the automatic steel mesh positioning system, the PCB printer continues to operate automatically.

[0008] Further, when the PCB printer needs to stop processing products, the PCB printer sends a steel mesh removal request to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station dispatches the transport robot to the steel mesh replacement position and waits; When the steel mesh replacement dispatching desk receives the information that the handling robot located at the steel mesh replacement position is ready to receive the steel mesh, the steel mesh replacement dispatching desk dispatches the PCB printer to send the installed steel mesh to the cache position corresponding to the handling robot, and then the PCB printer stops running.

[0009] Furthermore, before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform. If a stencil is installed, the PCB printer moves the tension detector to multiple preset positions of the stencil printing area through the scraper shaft and the tinning shaft and drives the tension detection cylinder to extend, and reads the stencil tension values ​​of the multiple preset positions through the tension detector. The PCB printer determines whether the steel mesh tension has reached the minimum effective value of tension. If the steel mesh tension values ​​are all greater than the minimum effective value, the PCB printer continues to run automatically.

[0010] Further, if one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a third steel mesh replacement requirement to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the third steel mesh replacement requirement to dispatch the transport robot to transport the third steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the steel mesh installed in the machine to the cache position corresponding to the handling robot, and the steel mesh replacement dispatching station dispatches the handling robot to send the third steel mesh to the steel mesh replacement entrance, the PCB printer automatically positions the third steel mesh at the steel mesh replacement entrance to the PCB printer through the automatic steel mesh positioning system, and the PCB printer continues to operate automatically.

[0011] Furthermore, the plurality of preset positions of the steel screen printing area include an upper left, lower left, upper right, lower right and middle position of the steel screen printing area.

[0012] Furthermore, after the PCB printer reaches the second preset time period in automatic operation, the PCB printer moves the tension detector to multiple preset positions of the steel mesh printing area through the scraper shaft and the tinning shaft and drives the tension detection cylinder to extend, and reads the steel mesh tension values ​​of the multiple preset positions through the tension detector to determine whether the steel mesh tension reaches the minimum effective tension value; If all the steel mesh tension values ​​are greater than the minimum effective value, the PCB printer continues to run automatically; if one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a fourth steel mesh replacement request to the steel mesh replacement dispatching station.

[0013] A second aspect provides a method for automatically replacing a steel mesh of a PCB printer, the method comprising: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform; If there is no stencil, the PCB printer sends a first stencil replacement requirement to the stencil replacement dispatching station, so that the stencil replacement dispatching station responds to the first stencil replacement requirement to dispatch the transport robot to transport the new first stencil to the stencil automatic replacement position and send the first stencil to the stencil replacement entrance of the PCB printer; When the PCB printer receives the request from the steel mesh replacement dispatch desk that the first steel mesh has been delivered, the PCB printer positions the first steel mesh at the steel mesh replacement entrance to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printer starts to run automatically.

[0014] Furthermore, after the PCB printer starts to run automatically, the method further includes: After the PCB printer reaches the first preset time period in automatic operation, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand to dispatch the transport robot to transport the second steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the first steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the second steel mesh to the steel mesh replacement entrance, and the PCB printer automatically positions the second steel mesh at the steel mesh replacement entrance through the automatic steel mesh positioning system, the PCB printer continues to operate automatically.

[0015] In a third aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it cooperates to implement the method for automatically replacing the steel mesh of the PCB printer.

[0016] It can be seen that in one of the solutions provided above, before starting automatic operation, the steel mesh sensor can be used to detect whether a steel mesh is installed on the printing platform; if there is no steel mesh, the steel mesh of the PCB printer can be automatically replaced through the intelligent handling of the handling robot and the scheduling processing of the steel mesh replacement scheduling desk, combined with the dynamic positioning steel mesh system set in the PCB printer. Compared with the traditional method of manual checking and manual replacement, it is more intelligent and has a higher efficiency in steel mesh replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a structural schematic diagram of a PCB printer in one embodiment of the present application; Figure 2 This is another structural schematic diagram of a PCB printer in one embodiment of the present application; Figure 3 This is a structural schematic diagram of a local area of ​​a PCB printer steel mesh in one embodiment of the present application; Figure 4 This is another structural schematic diagram of a local area of ​​a PCB printer steel mesh in one embodiment of the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] The embodiment of the present application provides a steel mesh automatic replacement system, which is used to achieve the purpose of automatic steel mesh replacement of a PCB printer, wherein, please refer to Figure 1-Figure 4 As shown, the following first describes an example of a PCB printer involved in an embodiment of the present application.

[0021] Specifically, as an example, in general, the structure of the PCB printer mainly includes the following parts: a frame, a printing platform, a crossbeam, a front transport rail, a rear transport rail, a printing head device (not shown in the figure), a PCB visual positioning system (not shown in the figure) and a cleaning device (not shown in the figure), among which: ‌Frame‌: used to provide stable support for the machine equipment to ensure the long-term stability and long-term printing accuracy of the PCB printer; ‌Printing platform‌: The printing platform includes PCB clamping device, PCB transmission system and screen frame, among which the steel mesh is installed on the screen frame, and the screen frame is installed on the printing platform. It should be understood that before using the steel mesh for printing, the steel mesh needs to be installed on the PCB printer so that the solder paste can be accurately applied to the PCB circuit board through the holes of the steel mesh.

[0022] Transport rail: The transport rail is installed on the printing platform. The transport rail is used to drive the crossbeam to move. The crossbeam cooperates with the printing head device, PCB visual positioning system and other modules to complete the tinning process of the PCB circuit board; ‌Print head device‌: includes scraper, print head moving system, including scraper shaft and tinning shaft, etc., responsible for transferring solder paste to PCB circuit board and completing scraper processing; PCB visual positioning system: used to correct the alignment error between the PCB pad and the steel mesh, and ensure the consistency of the solder paste printing quality of the PCB circuit board. Before printing each PCB circuit board, the PCB printer will automatically use the PCB visual positioning system for precise positioning; Cleaning device: used to clean the solder paste particles and flux components missed on the back of the steel mesh, usually installed directly behind the PCB printer; Automatic steel mesh positioning system: used to position and transfer the steel mesh transferred to the steel mesh replacement entrance into the mesh frame to complete the fixing of the steel mesh; Tension detection cylinder: used to apply tension to the area where the stencil is printed; Tension detector: used to detect and read the tension of the steel mesh; Host computer or control center: The control center of the PCB printer completes the processing of the PCB printer or other control and signal processing processes.

[0023] It should be understood that the above description of the PCB printer is only a brief description, and no specific limitation is made, nor is it described one by one. The above components jointly ensure the operation of the PCB printer, and some components cooperate with the external steel mesh replacement dispatching table and handling robot (AGV robot) to achieve the purpose of automatic steel mesh replacement to be achieved in this application. Below, the solution provided in the embodiment of this application is described through specific embodiments. In one embodiment, a stencil automatic replacement system for a PCB printer is provided, the stencil automatic replacement system comprising a PCB printer, a stencil replacement dispatching station, and a handling robot, wherein: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform; the stencil sensor can be a camera or other sensor, which is not specifically limited. The automatic operation of the PCB printer refers to before the PCB printer starts automatic operation according to the processing program. Before starting automatic operation, the control center of the PCB printer can read the detection data of the stencil sensor to determine whether a stencil is installed on the printing platform.

[0024] If the PCB printer detects that there is no steel mesh, the PCB printer sends a first steel mesh replacement demand to the steel mesh replacement scheduling desk, so that the steel mesh replacement scheduling desk responds to the first steel mesh replacement demand to schedule the transport robot to transport the new first steel mesh to the steel mesh automatic replacement position and send the first steel mesh to the steel mesh replacement entrance of the PCB printer; illustratively, when the PCB printer sends the first steel mesh replacement demand to the steel mesh replacement scheduling desk, it can send the first steel mesh replacement demand to the replacement scheduling desk based on TCP / IP communication, without specific limitation.

[0025] When the PCB printer receives the request from the steel mesh replacement dispatching station that the first steel mesh has been delivered, the PCB printer positions the first steel mesh at the steel mesh replacement entrance to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printer starts to operate automatically. The automatic steel mesh positioning system is a system provided at the steel mesh replacement entrance of the PCB printer, and the steel mesh replacement entrance is docked with the mesh frame in the PCB printer. The automatic steel mesh positioning system can push the steel mesh moved to the steel mesh replacement entrance into the mesh frame through components, thereby realizing automatic positioning and installation of the steel mesh.

[0026] It can be seen that in the embodiment of the present application, a system for automatically replacing steel meshes of a PCB printer is provided. Before starting automatic operation, the steel mesh sensor can detect whether a steel mesh is installed on the printing platform. If there is no steel mesh, the steel mesh of the PCB printer can be automatically replaced through the intelligent handling of the handling robot and the scheduling processing of the steel mesh replacement scheduling desk, combined with the dynamic positioning steel mesh system provided in the PCB printer. Compared with the traditional method of manual checking and manual replacement, it is more intelligent and has a higher efficiency in steel mesh replacement.

[0027] In one embodiment: After the PCB printer reaches the first preset time period in automatic operation, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand to dispatch the transport robot to transport the second steel mesh to the steel mesh replacement position and wait; illustratively, the first preset time period can be calibrated or set based on experience, and is not specifically limited. After the PCB printer runs automatically for a period of time, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand. Similarly, the PCB printer can send the second steel mesh replacement demand to the steel mesh replacement dispatching station through TCP / IP communication.

[0028] After the PCB printer sends the first steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the second steel mesh to the steel mesh replacement entrance, and the PCB printer automatically positions the second steel mesh at the steel mesh replacement entrance through the automatic steel mesh positioning system, the PCB printer continues to operate automatically.

[0029] It can be seen that in the embodiment of the present application, a system for automatically replacing steel meshes of a PCB printer is provided. During the automatic operation of the PCB printer, by setting time intervals, through the intelligent handling of the handling robot and the scheduling and coordination of the steel mesh replacement scheduling desk, combined with the dynamic positioning steel mesh system provided in the PCB printer, the automatic replacement of the steel meshes of the PCB printer during the automatic operation is achieved, and the seamless connection between the operation and the steel mesh replacement can also be achieved during the automatic operation, which has a higher degree of intelligence and a higher efficiency in steel mesh replacement.

[0030] In one embodiment: When the PCB printer needs to stop processing products, the PCB printer sends a steel mesh removal request to the steel mesh replacement scheduling desk, so that the steel mesh replacement scheduling desk dispatches the transport robot to the steel mesh replacement position and waits; when the PCB printer is automatically processing products, if it needs to stop processing products, the PCB printer sends a steel mesh removal request to the steel mesh replacement scheduling desk. Similarly, the PCB printer can send a steel mesh removal request to the steel mesh replacement scheduling desk through TCP / IP communication.

[0031] When the steel mesh replacement dispatching desk receives the information that the handling robot located at the steel mesh replacement position is ready to receive the steel mesh, the steel mesh replacement dispatching desk dispatches the PCB printer to send the installed steel mesh to the cache position corresponding to the handling robot, and then the PCB printer stops running.

[0032] It can be seen that in an embodiment of the present application, a system for automatically replacing steel meshes of a PCB printer is provided. When the PCB printer needs to stop processing products after processing, through the intelligent handling of the handling robot and the scheduling and coordination of the steel mesh replacement scheduling desk, the steel mesh replacement scheduling desk schedules the PCB printer to send the installed steel mesh to the cache position corresponding to the handling robot, and then the PCB printer stops running. The steel mesh in the machine can be removed when the PCB printer is shut down or stops running, and the steel mesh of the PCB printer is put in a waiting state in advance. In this way, before the automatic operation of the subsequent next operation cycle, the steel mesh of the PCB printer can be quickly replaced, which is simple and fast, and the efficiency is further improved.

[0033] In one embodiment, if Figure 3-Figure 4 As shown, in this example, the PCB printer includes a scraper shaft, a tinning shaft, a tension detector and a tension detection cylinder, wherein the tension detector is arranged at the extension end of the tension detection cylinder, and is used to collect the tension at the corresponding extrusion position when the extension end of the tension detection cylinder abuts against the extrusion steel mesh. Before the PCB printer starts to run automatically, the steel mesh sensor detects whether a steel mesh is installed on the printing platform. If there is a steel mesh, the PCB printer moves the tension detector to multiple preset positions of the steel mesh printing area through the scraper shaft (the scraper Y axis in the figure) and the tinning shaft (the tinning X axis) respectively, and drives the tension detection cylinder (Z axis) to extend and extrude the corresponding position, and reads the steel mesh tension values ​​of the multiple preset positions respectively through the tension detector. The PCB printer determines whether the steel mesh tension reaches the minimum effective value of the tension respectively. If the steel mesh tension values ​​are all greater than the minimum effective value, the PCB printer continues to run automatically.

[0034] Among them, the minimum effective value of the tension can be calibrated through the steel mesh materials and types of different PCB printers, and can also be set based on experience, without specific limitation; in addition, the specific positions of the multiple preset positions can also have multiple settings, which can be set based on experience, and are not specifically limited.

[0035] In this embodiment, before the PCB printer starts automatic operation, it detects whether a steel mesh is installed on the printing platform through a steel mesh sensor. If a steel mesh is installed, the PCB printer uses the scraper shaft and tinning shaft of the PCB printer itself, combined with the newly added tension detection cylinder and tension detector structure, to detect the tension of the original steel mesh. If the PCB printer determines that the steel mesh tension values ​​are greater than the minimum effective value, it means that the steel mesh on the PCB printer can still be used without replacement, and the PCB printer continues to run automatically.

[0036] It can be seen that in this embodiment, before the PCB printer starts automatic operation, it detects whether a steel mesh is installed on the printing platform through the steel mesh sensor. If a steel mesh is installed, the PCB printer will further perform a steel mesh validity detection process in combination with its own structural components. The steel mesh on the PCB printer can continue to be used without replacement, and the PCB printer continues to run automatically, thereby ensuring the normal operation of the PCB printer to the greatest extent, including ensuring the processing effectiveness.

[0037] In one embodiment: Before the PCB printer starts automatic operation, the PCB printer detects whether a stencil is installed on the printing platform through a stencil sensor. If there is a stencil and it is detected that one of the stencil tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a third stencil replacement requirement to the stencil replacement dispatching desk, so that the stencil replacement dispatching desk responds to the third stencil replacement requirement to dispatch the transport robot to transport the third stencil to the stencil replacement position and wait; similarly, the PCB printer can send the third stencil replacement requirement to the stencil replacement dispatching desk via TCP / IP communication.

[0038] After the PCB printer sends the steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the third steel mesh to the steel mesh replacement entrance. Then, the PCB printer automatically positions the third steel mesh at the steel mesh replacement entrance to the PCB printer through the automatic steel mesh positioning system, and the PCB printer continues to operate automatically.

[0039] It can be seen that in this embodiment, before the PCB printer starts automatic operation, it detects whether a steel mesh is installed on the printing platform through the steel mesh sensor. If a steel mesh is installed, the PCB printer will further combine its own structural components to perform a steel mesh validity detection process. When a problem with the steel mesh is detected, the automatic replacement of the steel mesh during the automatic operation of the PCB printer is achieved through the intelligent handling of the handling robot and the scheduling and coordination of the steel mesh replacement scheduling desk, combined with the dynamic positioning steel mesh system provided in the PCB printer, to fully ensure that the PCB printer can operate normally later.

[0040] In one embodiment: After the PCB printer reaches the second preset time period in automatic operation, the PCB printer moves the tension detector to multiple preset positions of the steel mesh printing area through the scraper shaft and the tinning shaft and drives the tension detection cylinder to extend, and reads the steel mesh tension values ​​of the multiple preset positions through the tension detector to determine whether the steel mesh tension reaches the minimum effective value of the tension. If the steel mesh tension values ​​are all greater than the minimum effective value, the PCB printer continues to run automatically; If one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a fourth steel mesh replacement request to the steel mesh replacement dispatching station. Exemplarily, the second preset time period may include different sub-time periods, such as time period a, time period b, time period c..., and after the PCB printer reaches the above time periods in automatic operation, the PCB printer will further combine its own structural components to perform steel mesh validity detection processing.

[0041] It can be seen that in this embodiment, another scenario for detecting the effectiveness of the steel mesh is provided. It is not before the PCB printer starts automatic operation, but after the PCB printer reaches the second preset time period in automatic operation. The PCB printer will further combine its own structural components to perform steel mesh effectiveness detection processing. When a problem is detected in the steel mesh, the automatic replacement of the steel mesh in the automatic operation of the PCB printer is realized through the intelligent handling of the handling robot and the scheduling and coordination of the steel mesh replacement scheduling desk, combined with the dynamic positioning steel mesh system provided in the PCB printer. If there is no problem, the operation will continue, which fully guarantees the normal operation of the PCB printer later.

[0042] In combination with the above embodiments, in one embodiment, the plurality of preset positions of the steel screen printing area include the upper left, lower left, upper right, lower right and middle positions of the steel screen printing area.

[0043] It should be understood that the multiple preset areas of the steel mesh printing area can have multiple situations, which are not specifically limited. In this example, the multiple preset positions include the upper left, lower left, upper right, lower right and middle position of the steel mesh printing area. Since the upper left, lower left, upper right, lower right and middle position of the steel mesh printing area can best characterize the tension and pressure bearing conditions of the steel mesh printing area, the PCB printer determines the effectiveness of the steel mesh tension through the above areas, which is most accurate.

[0044] The above embodiment describes a steel mesh automatic replacement system for a PCB printer provided in an embodiment of the present application. The following describes a steel mesh automatic replacement method for a PCB printer provided in an embodiment of the present application.

[0045] In one embodiment, the method comprises the following steps: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform; If there is no stencil, the PCB printer sends a first stencil replacement requirement to the stencil replacement dispatching station, so that the stencil replacement dispatching station responds to the first stencil replacement requirement to dispatch the transport robot to transport the new first stencil to the stencil automatic replacement position and send the first stencil to the stencil replacement entrance of the PCB printer; When the PCB printer receives the request from the steel mesh replacement dispatch desk that the first steel mesh has been delivered, the PCB printer positions the first steel mesh at the steel mesh replacement entrance to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printer starts to run automatically.

[0046] It can be seen that in the embodiment of the present application, a method for automatic replacement of steel mesh of a PCB printer is provided. Before starting automatic operation, the steel mesh sensor can be used to detect whether a steel mesh is installed on the printing platform; if there is no steel mesh, the steel mesh of the PCB printer can be automatically replaced through the intelligent transportation of the transportation robot and the scheduling processing of the steel mesh replacement scheduling desk, combined with the dynamic positioning steel mesh system provided in the PCB printer. Compared with the traditional method of manual checking and manual replacement, it is more intelligent and has a higher efficiency in steel mesh replacement.

[0047] In one embodiment, after the PCB printer starts to run automatically, the method further comprises the following steps: After the PCB printer reaches the first preset time period in automatic operation, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand to dispatch the transport robot to transport the second steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the first steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the second steel mesh to the steel mesh replacement entrance, and the PCB printer automatically positions the second steel mesh at the steel mesh replacement entrance through the automatic steel mesh positioning system, the PCB printer continues to operate automatically.

[0048] In one embodiment, the method further comprises the following steps: When the PCB printer needs to stop processing products, the PCB printer sends a steel mesh removal request to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station dispatches the transport robot to the steel mesh replacement position and waits; When the steel mesh replacement dispatching desk receives the information that the handling robot located at the steel mesh replacement position is ready to receive the steel mesh, the steel mesh replacement dispatching desk dispatches the PCB printer to send the installed steel mesh to the cache position corresponding to the handling robot, and then the PCB printer stops running.

[0049] In one embodiment, the method further comprises the following steps: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform. If a stencil is installed, the PCB printer moves the tension detector to multiple preset positions of the stencil printing area through the scraper shaft and the tinning shaft, drives the tension detection cylinder to extend, and reads the stencil tension values ​​of the multiple preset positions through the tension detector. The PCB printer determines whether the steel mesh tension has reached the minimum effective value of tension. If the steel mesh tension values ​​are all greater than the minimum effective value, the PCB printer continues to run automatically.

[0050] In one embodiment, the method further comprises the following steps: If one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a third steel mesh replacement requirement to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the third steel mesh replacement requirement to dispatch the transport robot to transport the third steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the steel mesh installed in the machine to the cache position corresponding to the handling robot, and the steel mesh replacement dispatching station dispatches the handling robot to send the third steel mesh to the steel mesh replacement entrance, the PCB printer automatically positions the third steel mesh at the steel mesh replacement entrance to the PCB printer through the automatic steel mesh positioning system, and the PCB printer continues to operate automatically.

[0051] In one embodiment, the plurality of preset positions of the steel screen printing area include the upper left, lower left, upper right, lower right and middle positions of the steel screen printing area.

[0052] In one embodiment, the method further comprises the following steps: After the PCB printer reaches the second preset time period in automatic operation, the PCB printer moves the tension detector to multiple preset positions of the steel mesh printing area through the scraper shaft and the tinning shaft and drives the tension detection cylinder to extend, and reads the steel mesh tension values ​​of the multiple preset positions through the tension detector to determine whether the steel mesh tension reaches the minimum effective tension value; If all the steel mesh tension values ​​are greater than the minimum effective value, the PCB printer continues to run automatically; if one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a fourth steel mesh replacement request to the steel mesh replacement dispatching station.

[0053] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0054] It should also be noted that other details and technical effects of the method can be found in the corresponding system embodiments and will not be repeated here.

[0055] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for automatically replacing a steel mesh of a PCB printer described in the above embodiment is implemented. To avoid repetition, it will not be described here.

[0056] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0057] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0058] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A stencil automatic replacement system for a PCB printer, characterized in that: The automatic steel mesh replacement system includes a PCB printer, a steel mesh replacement dispatching station and a handling robot, wherein: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform; If there is no stencil, the PCB printer sends a first stencil replacement requirement to the stencil replacement dispatching station, so that the stencil replacement dispatching station responds to the first stencil replacement requirement to dispatch the transport robot to transport the new first stencil to the stencil automatic replacement position and send the first stencil to the stencil replacement entrance of the PCB printer; When the PCB printer receives the request from the steel mesh replacement dispatch desk that the first steel mesh has been delivered, the PCB printer positions the first steel mesh at the steel mesh replacement entrance to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printer starts to run automatically.

2. The automatic steel mesh replacement system for a PCB printer according to claim 1, characterized in that: After the PCB printer reaches the first preset time period in automatic operation, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand to dispatch the transport robot to transport the second steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the first steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the second steel mesh to the steel mesh replacement entrance, and the PCB printer automatically positions the second steel mesh at the steel mesh replacement entrance through the automatic steel mesh positioning system, the PCB printer continues to operate automatically.

3. The automatic steel mesh replacement system for a PCB printer according to claim 2, characterized in that: When the PCB printer needs to stop processing products, the PCB printer sends a steel mesh removal request to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station dispatches the transport robot to the steel mesh replacement position and waits; When the steel mesh replacement dispatching desk receives the information that the handling robot located at the steel mesh replacement position is ready to receive the steel mesh, the steel mesh replacement dispatching desk dispatches the PCB printer to send the installed steel mesh to the cache position corresponding to the handling robot, and then the PCB printer stops running.

4. The automatic steel mesh replacement system for a PCB printer according to any one of claims 1 to 3, characterized in that: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform. If a stencil is installed, the PCB printer moves the tension detector to multiple preset positions of the stencil printing area through the scraper shaft and the tinning shaft, drives the tension detection cylinder to extend, and reads the stencil tension values ​​of the multiple preset positions through the tension detector. The PCB printer determines whether the steel mesh tension has reached the minimum effective value of tension. If the steel mesh tension values ​​are all greater than the minimum effective value, the PCB printer continues to run automatically.

5. The automatic steel mesh replacement system for a PCB printer according to claim 4, characterized in that: If one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a third steel mesh replacement requirement to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the third steel mesh replacement requirement to dispatch the transport robot to transport the third steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the steel mesh installed in the machine to the cache position corresponding to the handling robot, and the steel mesh replacement dispatching station dispatches the handling robot to send the third steel mesh to the steel mesh replacement entrance, the PCB printer automatically positions the third steel mesh at the steel mesh replacement entrance to the PCB printer through the automatic steel mesh positioning system, and the PCB printer continues to operate automatically.

6. The automatic steel mesh replacement system for a PCB printer according to claim 4, characterized in that: in, The plurality of preset positions of the steel screen printing area include an upper left position, a lower left position, an upper right position, a lower right position and a middle position of the steel screen printing area.

7. The automatic steel mesh replacement system for a PCB printer according to any one of claims 1 to 3, characterized in that: After the PCB printer reaches the second preset time period in automatic operation, the PCB printer moves the tension detector to multiple preset positions of the steel mesh printing area through the scraper shaft and the tinning shaft and drives the tension detection cylinder to extend, and reads the steel mesh tension values ​​of the multiple preset positions through the tension detector to determine whether the steel mesh tension reaches the minimum effective tension value; If all the steel mesh tension values ​​are greater than the minimum effective value, the PCB printer continues to run automatically; if one of the steel mesh tension values ​​is less than or equal to the minimum effective value, the PCB printer sends a fourth steel mesh replacement request to the steel mesh replacement dispatching station.

8. A method for automatically replacing a steel mesh of a PCB printer, characterized in that: The method comprises: Before the PCB printer starts automatic operation, the stencil sensor detects whether a stencil is installed on the printing platform; If there is no stencil, the PCB printer sends a first stencil replacement requirement to the stencil replacement dispatching station, so that the stencil replacement dispatching station responds to the first stencil replacement requirement to dispatch the transport robot to transport the new first stencil to the stencil automatic replacement position and send the first stencil to the stencil replacement entrance of the PCB printer; When the PCB printer receives the request from the steel mesh replacement dispatch desk that the first steel mesh has been delivered, the PCB printer positions the first steel mesh at the steel mesh replacement entrance to the steel mesh installation position through the automatic steel mesh positioning system, and then the PCB printer starts to run automatically.

9. The method for automatically replacing steel mesh of a PCB printer according to claim 8, characterized in that: After the PCB printer starts to run automatically, the method further includes: After the PCB printer reaches the first preset time period in automatic operation, the PCB printer sends a second steel mesh replacement demand to the steel mesh replacement dispatching station, so that the steel mesh replacement dispatching station responds to the second steel mesh replacement demand to dispatch the transport robot to transport the second steel mesh to the steel mesh replacement position and wait; After the PCB printer sends the first steel mesh installed in the machine to the cache position corresponding to the handling robot, the steel mesh replacement dispatching desk dispatches the handling robot to send the second steel mesh to the steel mesh replacement entrance, and the PCB printer automatically positions the second steel mesh at the steel mesh replacement entrance through the automatic steel mesh positioning system, the PCB printer continues to operate automatically.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor, the method for automatically replacing the steel mesh of a PCB printer as described in any one of claims 8 or 9 is implemented.

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