Automatic license plate manufacturing device and license plate manufacturing method

Abstract

The application relates to a license plate automatic manufacturing device and a license plate manufacturing method, the device comprising a plate automatic feeding mechanism, an automatic sorting font matrix library, a font matrix carrying manipulator, a stamping tool, a supplementary font matrix library and a supplementary font matrix conveying mechanism, the automatic sorting font matrix library being used for automatically arranging font matrix combinations of license plate numbers, the font matrix carrying manipulator being used for carrying the font matrix combinations to the stamping tool, taking down the font matrix combinations from the stamping tool and placing the font matrix combinations back to the automatic sorting font matrix library, the stamping tool stamping out license plate numbers on the plate by using the font matrix combinations, the automatic sorting font matrix library being provided with a font matrix supplement area, the supplementary font matrix conveying mechanism being used for moving supplementary font matrices in the supplementary font matrix library to the font matrix supplement area of the automatic sorting font matrix library and placing the supplementary font matrices in the automatic sorting font matrix library back to the supplementary font matrix library. The application well solves the technical problem that the automatic sorting font matrix library is incomplete, manual font matrix replacement of the automatic sorting font matrix library is needed and the efficiency is low.

Description

Technical Field

[0001] This invention relates to the field of automatic license plate making equipment, and in particular to an automatic license plate making device and a method for making license plates. Background Technology

[0002] License plates typically consist of provincial or municipal administrative region identifiers plus 5 or 6 letters, numbers, or a combination of letters and numbers. License plate production is currently primarily done semi-automatically. Because each license plate number is unique, the production process involves manually arranging the letter molds for each license plate number on a stamping machine. The sheet metal is then placed on the stamping machine for stamping. After stamping, the license plate and letter molds are removed from the machine, and the license plate is sent to another workstation for the next process, where another set of letter molds is applied, and this process is repeated.

[0003] To reduce the labor intensity of operators and improve the automation level of license plate production, the applicant has developed a fully automated license plate production equipment (patent number CN202022797279.4, titled "License Plate Production Equipment"). This equipment includes an automatic character template sorting library for storing character template groups, and a robotic arm for moving the character templates from the automatic sorting library to a stamping machine, enabling fully automated license plate production. However, the original automatic character template sorting library design is only for ordinary license plate rules (for gasoline vehicles) and cannot adapt to new energy vehicle license plate rules, mainly because the existing character templates are incomplete and cannot be combined to form the required number combinations. Therefore, when the required character template cannot be found in the original automatic character template sorting library, manual replacement of the character template is required, resulting in low efficiency. In recent years, the demand for new energy vehicle license plates has increased dramatically, urgently requiring a solution to this technical problem. Summary of the Invention

[0004] To address the technical problem of incomplete automatic font libraries requiring manual replacement of fonts, which leads to reduced efficiency, this invention provides an automatic license plate production device and a license plate production method.

[0005] The technical solution provided by this invention is as follows: an automatic license plate production device, comprising an automatic plate feeding mechanism, an automatic sorting character mold library, a character mold handling robot, and a stamping machine. The automatic plate feeding mechanism is used to place the plate into the stamping machine. The automatic sorting character mold library is used to automatically arrange the character mold combinations of the license plate number. The character mold handling robot is used to transport the character mold combinations to the stamping machine and to remove the character mold combinations from the stamping machine and return them to the automatic sorting character mold library. The stamping machine uses the character mold combinations to stamp the license plate number on the plate. The automatic license plate production device also includes a supplementary character mold library and a supplementary character mold conveying mechanism. The automatic sorting character mold library has a character mold supplementing area. The supplementary character mold conveying mechanism is used to transfer supplementary character molds from the supplementary character mold library to the character mold supplementing area of ​​the automatic sorting character mold library and to return supplementary character molds from the automatic sorting character mold library to the supplementary character mold library.

[0006] The automatic sorting font library has 6 columns and 15 rows. The first column contains A, B, C, D, E, F, G, H, J, K, and 0-3. The second column contains A, B, C, D, E, F, G, H, J, K, L, M, N, and P. The third column contains 0-9. The fourth column contains 0-9. The fifth column contains 0-9. The sixth column contains 0-9, A, B, C, and D. The supplementary font library has 6 columns and 10 rows. The first column contains 4-9. The second column contains Q, R, S, T, U, V, W, X, Y, and Z. The third column contains 0-9. The fourth and fifth columns are empty. The sixth column contains E, F, G, H, J, and K.

[0007] Another technical solution provided by the present invention is: a license plate production method based on the above-described automatic license plate production equipment, comprising the following steps:

[0008] S1, obtain the license plate number to be produced, and select the corresponding plate material based on the license plate number;

[0009] S2, using the automatic sheet feeding mechanism to move the corresponding sheet onto the stamping machine;

[0010] S3. Sequentially search for character patterns in columns one through six of the automatically sorted character pattern library. If a corresponding character pattern is found, automatically arrange the corresponding character pattern combination using the automatically sorted character pattern library, and use a character pattern handling robot to move the character pattern combination to the stamping machine. If no corresponding character pattern is found in any column, transfer the supplementary character pattern from the supplementary character pattern library to the character pattern supplementary area of ​​the current column of the automatically sorted character pattern library through the supplementary character pattern conveying mechanism, automatically arrange the corresponding character pattern combination using the automatically sorted character pattern library, and use a character pattern handling robot to move the character pattern combination to the stamping machine.

[0011] S4 uses a stamping machine to stamp the sheet metal to stamp out the license plate number.

[0012] The step S4 is followed by the following step:

[0013] S5, the character mold handling robot is used to send the character mold assembly back to the automatically sorted character mold library, and the automatically sorted character mold library resets all the character molds;

[0014] S6, using the supplementary character template transfer mechanism, sends the supplementary character templates from the automatically sorted character template library back to the supplementary character template library.

[0015] In step S1, more specifically, the license plate type is determined based on the first and sixth digits of the license plate number, and the corresponding plate material is selected. If the first digit of the license plate number is D or F, the plate material for electric small vehicles is selected; if the sixth digit of the license plate number is D or F, the plate material for electric large vehicles is selected; if neither the first nor the sixth digit is D or F, the plate material for oil vehicles is selected.

[0016] In step S3, when a column in the automatically sorted character template library does not find a corresponding character template, the system will first search for a supplementary character template in the same column of the supplementary character template library.

[0017] Specifically, if no corresponding character is found in the second column of the automatically sorted character template library, the system will first search the second column of the supplementary character template library for supplementary character templates. If no such character is found, the system will then search the third column of the supplementary character template library for supplementary character templates.

[0018] In step S3, the automatic sorting font library has six columns of independently moving font frames. Each font frame contains a font. According to the license plate number to be produced, the six columns of font frames are combined to form a row of fonts. Then, the font handling robot moves the entire row of fonts to the stamping machine in one go.

[0019] In step S2, a verification step is also included to detect whether the board material is used correctly using a visual recognition camera.

[0020] The process includes stamping the license plate number onto the plate, followed by a step of heat-transferring the license plate using a heat transfer module, and then collecting and stacking the license plates into a plate-collecting module after the heat transfer step.

[0021] The beneficial effects of this invention are as follows: The automatic license plate production equipment further upgrades and expands the automatic sorting character template library based on the original design. By adding a supplementary character template library, the capacity of the original automatic sorting character template library is increased to accommodate more license plate number segments. When the desired character template cannot be found in the automatic sorting character template library, the supplementary character template conveying mechanism is activated to transfer the corresponding supplementary character template to the character template supplementing area of ​​the automatic sorting character template library, and then automatically combine them into the required number combination. Finally, the character template handling robot transports the character template combination to the stamping machine for stamping operation. This application, by adding a supplementary character template library and a supplementary character template conveying mechanism, effectively solves the technical problem of low efficiency caused by the need for manual replacement of character templates in the original automatic sorting character template library when the required character template cannot be found due to its incompleteness. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the automatic license plate production equipment described in this invention;

[0023] Figure 2 This is a schematic diagram of the structure of the automatic sorting font library described in this invention;

[0024] Figure 3 This is a schematic diagram of the structure of the supplementary character set described in this invention;

[0025] Figure 4 A schematic diagram of the structure of the supplementary character template transmission mechanism described in this invention;

[0026] Figure 5 A schematic diagram of the supplementary character template transmission mechanism of the present invention from another angle;

[0027] Figure 6 A schematic diagram of the Y-axis driving device of the present invention;

[0028] Figure 7 A schematic diagram of the Y-axis driving device of the present invention from another angle;

[0029] Figure 8 A schematic diagram of the Z-axis lifting device and the character mold gripper described in this invention;

[0030] Figure 9 This is a layout diagram of the automatically sorted font library described in this invention;

[0031] Figure 10 This is a schematic diagram of the layout of the supplementary font library described in this invention.

[0032] The components include: 1. Automatic sheet metal feeding mechanism; 2. Automatic sorting mold library; 21. Mold frame; 22. Mold box; 23. Motor; 24. Lead screw; 25. Mold; 3. Mold handling robot; 4. Stamping machine; 5. Supplementary mold library; 51. Supplementary mold; 6. Supplementary mold conveying mechanism; 61. XY moving platform; 611. X-axis drive device; 6111. X-axis platform; 6112. X-axis servo motor; 6113. Drive shaft; 6114. First belt pulley transmission assembly; 6115. Second belt pulley... 612. Belt drive assembly; 6121. Y-axis drive device; 6122. Y-axis moving axis; 6123. Y-axis servo motor; 6124. Third belt pulley drive assembly; 6125. Y-axis slide rail; 6126. Y-axis slider; 62. Z-axis lifting device; 621. Mounting plate; 622. Lifting cylinder; 623. Lifting plate; 624. Adapter plate; 625. First guide rail; 63. Character mold gripper; 631. Left gripper; 632. Right gripper; 633. Gripper cylinder; 7. Heat transfer module; 8. Card receiving module. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] Since the main design of the automatic license plate production equipment has been confirmed and the equipment has been produced, the structure cannot be changed. Therefore, the solution is to add a supplementary character template library to meet the development requirements. Originally, the equipment could only produce license plates for gasoline vehicles, but now it needs to be compatible with producing license plates for new energy vehicles.

[0035] like Figure 9 The diagram shows the layout of an existing automatically sorted character set library, which has 6 columns and 15 rows, and can store a maximum of 90 character sets, but only 72 are actually used, with the last row left empty. Specifically, the first column of the automatically sorted character set library contains A, B, C, D, E, F, G, H, J, K, and 0-3; the second column contains A, B, C, D, E, F, G, H, J, K, L, M, N, and P; the third column contains 0-9; the fourth column contains 0-9; the fifth column contains 0-9; and the sixth column contains 0-9, A, B, C, and D.

[0036] The first column corresponds to the first digit or letter of the license plate, the second column corresponds to the second digit or letter, and so on. According to the rules for arranging license plates for new energy vehicles, the letter representing the vehicle type is located in the first position of the license plate for small cars, and in the sixth position for large cars. The last four digits of the license plate for small cars must be numbers, and the first five digits of the license plate for large cars must be numbers. According to this rule, the first digit of the license plate can contain A, B, C, D, E, F, G, H, J, K, or 0-9; the second digit can contain A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, R, S, T, U, V, W, X, Y, Z, or 0-9; the third digit can contain 0-9; the fourth digit can contain 0-9; the fifth digit can contain 0-9; and the sixth digit can contain A, B, C, D, E, F, G, H, J, K, or 0-9.

[0037] Therefore, the supplementary fonts in the first column of the supplementary font library are 4-9, which are used to supplement the first column of the automatic sorting font library; the second and third columns of the supplementary automatic sorting font library are used to supplement the second column of the automatic sorting font library (because the second column of the original automatic sorting font library contains not only 24 letters but also numbers, while the third, fourth and fifth columns of the original automatic sorting font library are numbers and do not need to be supplemented, so the second and third columns of the supplementary automatic sorting font library can both supplement the second column of the original automatic sorting font library), and the sixth column of the supplementary font library is used to supplement the sixth column of the automatic sorting font library.

[0038] like Figure 10 The diagram shows the layout of the supplementary character set library described in this invention, consisting of 6 columns and 10 rows. It can store a maximum of 60 supplementary character sets, but this solution only uses 32 (the arrangement is determined according to the rules for new energy vehicle license plates; other types of license plates can also use other arrangements). To facilitate system scheduling, each column of the supplementary character set library should ideally correspond one-to-one with the automatically sorted character set library. Specifically, the first column contains supplementary character sets 4-9 (in sequence), the second column contains Q, R, S, T, U, V, W, X, Y, and Z, the third column contains supplementary character sets 0-9 (in sequence), the fourth and fifth columns are left empty, and the sixth column contains supplementary character sets 4-9 (in sequence).

[0039] As an embodiment of the automatic license plate generation equipment described in this invention, such as Figures 1 to 8As shown, the system includes an automatic sheet metal feeding mechanism 1, an automatic sorting character mold library 2, a character mold handling robot 3, and a stamping machine 4. The automatic sheet metal feeding mechanism 1 is used to place the sheet metal into the stamping machine 4. The automatic sorting character mold library 2 is used to automatically arrange the character mold combinations for license plate numbers. The character mold handling robot 3 is used to transport the character mold combinations to the stamping machine 4, and to remove the character mold combinations from the stamping machine 4 and put them back into the automatic sorting character mold library 2. The stamping machine 4 uses the character mold combinations to stamp out the license plate numbers on the sheet metal. The automatic license plate production equipment also includes a supplementary character mold library 5 and a supplementary character mold conveying mechanism 6. The automatic sorting character mold library 2 has a character mold supplementing area. In this embodiment, the last row of the automatic sorting character mold library 2 is left empty to form the character mold supplementing area. The supplementary character mold conveying mechanism 6 is used to transfer the supplementary character molds 51 in the supplementary character mold library 5 to the character mold supplementing area formed by the automatic sorting character mold library 2, and to put the supplementary character molds 51 in the automatic sorting character mold library 2 back into the supplementary character mold library 5.

[0040] The license plate production method of the automatic license plate production equipment described in this embodiment includes the following steps:

[0041] S1, obtain the license plate number to be produced, and select the material used for the corresponding license plate;

[0042] S2, the corresponding sheet metal is moved onto the stamping machine 4 by the automatic sheet metal feeding mechanism 1;

[0043] S3, sequentially search for character patterns in columns 1 to 6 of the automatic sorting character pattern library 2. If a corresponding character pattern 25 is found, the automatic sorting character pattern library 2 automatically arranges the corresponding character pattern combination, and the character pattern handling robot 3 moves the character pattern combination to the stamping machine 4. If no corresponding character pattern 25 is found in any column, the supplementary character pattern 51 in the supplementary character pattern library 5 is transferred to the character pattern supplementary area of ​​the current column of the automatic sorting character pattern library 2 (the last row of the automatic sorting character pattern library 2) through the supplementary character pattern conveying mechanism 6. Then, the automatic sorting character pattern library 2 automatically arranges the corresponding character pattern combination, and the character pattern handling robot 3 moves the character pattern combination to the stamping machine 4.

[0044] S4, using stamping tool 4 to stamp the sheet metal to stamp out the license plate number;

[0045] S5, the character mold assembly is sent back to the automatic sorting character mold library 2 by the character mold handling robot 3, and the automatic sorting character mold library 2 resets all the character molds 25;

[0046] S6, using the supplementary character template transfer mechanism 6, the supplementary character template 51 in the automatically sorted character template library 2 is sent back to the supplementary character template library 5.

[0047] In step S1, the license plate type is determined based on the first and sixth digits of the license plate number. If the first digit of the license plate number is D or F, the plate material for electric small vehicles is selected; if the sixth digit of the license plate number is D or F, the plate material for electric large vehicles is selected; if neither the first nor the sixth digit is D or F, the plate material for oil vehicles is selected.

[0048] The automatic license plate production equipment described above is an upgrade and expansion of the original automatic sorting character template library 2. By adding a supplementary character template library 5, the capacity of the original automatic sorting character template library 2 is increased to accommodate more license plate number segments. When the desired character template 25 cannot be found in the automatic sorting character template library 2, the supplementary character template conveying mechanism 6 is activated to transfer the corresponding supplementary character template 51 to the last row of the automatic sorting character template library 2, and then automatically assembles it into the required character template combination. Finally, the character template handling robot 3 transports the character template combination to the stamping machine 4 for stamping. This application, by adding a supplementary character template library 5 and a supplementary character template conveying mechanism 6, effectively solves the technical problem of low efficiency caused by the need for manual replacement of character templates 25 in the original automatic sorting character template library 2 when it was incomplete and the required character template 25 could not be found.

[0049] In this embodiment, the automatically sorted character template library 2 includes a character template frame 21, six columns of independently movable character template frames 22, six sets of motors 23, and lead screws 24. The character template frames 22 are slidably mounted on the character template frame 21. Each set of motors 23 and lead screws 24 is used to drive one column of character template frames 22 to move. Each character template frame 22 contains a character template 25. The motors 23 drive the lead screws 24 to rotate, and the lead screws 24 then drive the character template frames 22 to move, so that one row of character templates 25 in the six columns of character template frames 22 forms the required character template combination. Since this application does not improve the automatically sorted character template library 2, it still adopts the original technical solution, and will not be described in detail here.

[0050] In step S3, when a corresponding character pattern is not found in a column of the automatically sorted character pattern library 2, the system first searches for a supplementary character pattern in the same column of the supplementary character pattern library 5. Additionally, when a corresponding character pattern is not found in the second column of the automatically sorted character pattern library 2, the system first searches for a supplementary character pattern in the second column of the supplementary character pattern library 5. If no such pattern is found, the system then searches for a supplementary character pattern in the third column of the supplementary character pattern library 5.

[0051] In this embodiment, the supplementary character template conveying mechanism 6 includes an XY moving platform 61, a Z-axis lifting device 62, and a character template gripper 63. The Z-axis lifting device 62 is mounted on the XY moving platform 61, and the XY moving platform 61 drives the Z-axis lifting device 62 to move horizontally. The character template gripper 63 is mounted on the Z-axis lifting device 62, and the Z-axis lifting device 62 drives the character template gripper 63 to rise and fall. The character template gripper 63 is used to grasp the character template 25. The supplementary character template conveying mechanism 6 can achieve three-dimensional movement, and can transfer the supplementary character template 51 in the supplementary character template library 5 to the last row of the automatically sorted character template library 2.

[0052] In this embodiment, the Z-axis lifting device 62 includes a mounting plate 621, a lifting cylinder 622, a lifting plate 623, a transition plate 624, and a first guide rail 625. The mounting plate 621 is mounted on the XY moving platform 61. The lifting plate 623 is slidably mounted on the mounting plate 621 via the first guide rail 625. The lifting cylinder 622 is also mounted on the mounting plate 621. The cylinder shaft of the lifting cylinder 622 is connected to the lifting plate 623 via the transition plate 624. The character mold gripper 63 is mounted on the lifting plate 623. When the lifting cylinder 622 operates, it drives the transition plate 624 to rise and fall, which in turn drives the lifting plate 623 to rise and fall, and finally, the lifting plate 623 drives the character mold gripper 63 to rise and fall.

[0053] In this embodiment, the lifting cylinder 622 and the lifting plate 623 are arranged side by side on the mounting plate 621, with the cylinder shaft of the lifting cylinder 622 facing upwards. This side-by-side arrangement significantly reduces the height of the Z-axis lifting device 62, further reducing its size.

[0054] In this embodiment, the character mold clamping claw 63 includes a left clamping claw 631, a right clamping claw 632, and a clamping claw cylinder 633. The clamping claw cylinder 633 drives the left clamping claw 631 and the right clamping claw 632 to clamp the supplementary character mold 51, and ensures that it is clamped tightly and not easy to loosen.

[0055] In this embodiment, the XY moving platform 61 includes an X-axis driving device 611 and a Y-axis driving device 612, with the Y-axis driving device 612 mounted on the X-axis driving device 611. The X-axis driving device 611 includes an X-axis platform 6111, an X-axis servo motor 6112, a drive shaft 6113, a first pulley transmission assembly 6114, and a second pulley transmission assembly 6115. The Y-axis driving device 612 is slidably mounted on the X-axis platform 6111. Both the X-axis servo motor 6112 and the drive shaft 6113 are mounted on the X-axis platform 6111. The X-axis servo motor 6112 drives the drive shaft 6113 to rotate via the first pulley transmission assembly 6114, and the drive shaft 6113 is driven by the second pulley transmission assembly 6115. The Y-axis drive device 612 moves along the X-axis. The Y-axis drive device 612 includes a Y-axis moving shaft 6121, a Y-axis servo motor 6122, a third belt pulley transmission assembly 6123, a Y-axis slide rail 6124, and a Y-axis slider 6125. The Y-axis moving shaft 6121 is slidably mounted on the X-axis drive device 611. The Y-axis slide rail 6124 is fixedly mounted on the Y-axis moving shaft 6121. The Z-axis lifting device 62 is fixedly mounted on the Y-axis slider 6125. The Y-axis slider 6125 is horizontally slidably mounted on the Y-axis slide rail 6124. The Y-axis servo motor 6122 is mounted on the Y-axis moving shaft 6121. The Y-axis servo motor 6122 drives the Y-axis slider 6125 to move along the Y-axis through the third belt pulley transmission assembly 6123.

[0056] In this embodiment, in step S3, the automatic sorting character template library 2 is provided with six columns of independently moving character template frames 22, and each character template frame 22 is provided with a character template 25. According to the license plate number to be produced, the six columns of character template frames 22 are combined to form a row of required character templates. Then, the character template handling robot 3 is used to move the entire row of character templates to the stamping machine 4 in one go.

[0057] In this embodiment, step S2 further includes a verification step using a visual recognition camera to check whether the board material is used correctly, to prevent workers from misplacing the board material due to operational errors. Because the license plates for new energy small vehicles are made of green board material, while the license plates for new energy large vehicles are yellow-green, they cannot be used interchangeably.

[0058] In this embodiment, after the license plate number is stamped on the plate, the process also includes a step of heat transfer printing the license plate using the heat transfer printing module 7, which generally involves transferring black ink onto the raised characters of the license plate. After the heat transfer printing step, the process also includes a step of collecting and stacking the license plates into the license plate receiving module 8. The entire process is automated and does not require human intervention.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A license plate manufacturing method based on a license plate automatic manufacturing apparatus, characterized by, The device comprises a supplementary matrix library and a supplementary matrix conveying mechanism, the automatic sequencing matrix library is provided with a matrix supplementary area, the supplementary matrix conveying mechanism is used for transferring the supplementary matrix in the supplementary matrix library to the matrix supplementary area of the automatic sequencing matrix library, and the supplementary matrix in the automatic sequencing matrix library is put back to the supplementary matrix library The method comprises the following steps: S1, obtaining a license plate number to be made, and selecting a plate material used for a corresponding license plate according to the license plate number; S2, moving the corresponding plate material to a stamping tool by using a plate material automatic feeding mechanism; S3, sequentially detecting the first column to the sixth column of the automatic sequencing matrix library, if the corresponding matrix can be detected, arranging the corresponding matrix combination by using the automatic sequencing matrix library, and moving the matrix combination to the stamping tool by using a matrix handling manipulator; if the corresponding matrix cannot be detected in any column, transferring the supplementary matrix in the supplementary matrix library to the matrix supplementary area of the current column of the automatic sequencing matrix library by using the supplementary matrix conveying mechanism, arranging the corresponding matrix combination by using the automatic sequencing matrix library, and moving the matrix combination to the stamping tool by using the matrix handling manipulator; S4, stamping the plate material by using the stamping tool to stamp out the license plate number.

2. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 1, wherein After step S4, the method further comprises the following steps: S5, sending the matrix combination back to the automatic sequencing matrix library by using the matrix handling manipulator, and resetting all the matrices in the automatic sequencing matrix library; S6, sending the supplementary matrix in the automatic sequencing matrix library back to the supplementary matrix library by using the supplementary matrix conveying mechanism.

3. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 1, wherein In step S1, the license plate type is determined according to the first and sixth positions of the license plate number, when the first position of the license plate number is D or F, the plate material of an electric small vehicle is selected; when the sixth position of the license plate number is D or F, the plate material of an electric large vehicle is selected; if neither the first position nor the sixth position is D or F, the plate material of an oil vehicle is selected.

4. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 1, wherein In step S3, when the corresponding matrix cannot be detected in a column of the automatic sequencing matrix library, the supplementary matrix in the same column number of the supplementary matrix library is preferentially searched.

5. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 4, wherein When the corresponding matrix cannot be detected in the second column of the automatic sequencing matrix library, the supplementary matrix in the second column of the supplementary matrix library is preferentially searched, if the supplementary matrix cannot be searched, the supplementary matrix in the third column of the supplementary matrix library is searched.

6. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 4, wherein In step S3, the automatic sequencing matrix library is provided with six columns of matrix frames that independently move, the matrix frames are provided with matrices, according to the license plate number to be made, the six columns of matrix frames jointly form a row of required matrix combinations, and the whole row of matrix combinations is moved to the stamping tool by using the matrix handling manipulator at one time.

7. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 1, wherein In step S2, the method further comprises a checking step of detecting whether the plate material is correctly used by using a visual recognition camera.

8. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 1, wherein After the license plate number is stamped on the plate material, the method further comprises a step of performing heat transfer printing on the license plate by using a heat transfer printing module, and a step of collecting and stacking the license plates to a license plate collecting module after the heat transfer printing step.

9. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 1, wherein The license plate automatic manufacturing equipment further comprises a plate automatic feeding mechanism, an automatic sorting font matrix library, a font matrix carrying manipulator and a stamping machine tool.

10. The license plate manufacturing method of the license plate automatic manufacturing apparatus according to claim 9, wherein The automatic sorting font matrix library is provided with 6 columns and 15 rows, the first column contains A, B, C, D, E, F, G, H, J, K, 0-3, the second column contains A, B, C, D, E, F, G, H, J, K, L, M, N, P, the third column contains 0-9, the fourth column contains 0-9, the fifth column contains 0-9, and the sixth column contains 0-9, A, B, C, D; the supplementary font matrix library is provided with 6 columns and 10 rows, the first column contains 4-9, the second column contains Q, R, S, T, U, V, W, X, Y, Z, the third column contains 0-9, the fourth column and the fifth column are empty, and the sixth column contains E, F, G, H, J, K.

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