License plate manufacturing production line

Abstract

The license plate manufacturing production line comprises a rack, a license plate feeding mechanism, a license plate conveying mechanism, a character die storing and taking mechanism, a character pressing mechanism, a license plate transferring mechanism and a character erasing mechanism. The automatic word pressing and erasing device has the advantages that the functions of automatic word pressing and automatic word erasing can be achieved, trouble and labor are saved, the production efficiency can be improved, and the problem that the product percent of pass is reduced due to manual errors can be solved. And meanwhile, each type matrix is independently selected, so that a plurality of type matrixes can be selected at the same time, waiting time is avoided, the situation that the type matrixes are not enough can be avoided, and the type matrixes can be accurately and quickly selected even if a plurality of number plates with continuous numbers appear.

Description

Technical field:

[0001] The invention relates to the field of number plate manufacturing, and in particular to a number plate manufacturing production line. Background technology:

[0002] Motor vehicle license plates are important symbols for identifying vehicle information. The current process for producing motor vehicle license plates is as follows: first, the aluminum coil is flattened by a straightening machine, then coated by a laminating machine, and then after punching and blanking, the aluminum material is stamped into semi-finished license plates of uniform size, and then the embossing machine presses out the embossed characters of the specified number, and finally the eraser wipes off the ink on the embossed characters to obtain the finished license plate.

[0003] Since each link needs to be completed by a separate device, it not only consumes a lot of manpower, but also the current embossing machines are mostly operated manually to take the corresponding fonts and place them in the embossing frame of the embossing machine, and then the embossing machine completes the embossing work. However, manual operation is bound to make mistakes. In the actual operation process, the fonts are often taken incorrectly or the order is wrong, resulting in the produced license plates being unusable and invalid; and, since the same numbers or fonts often appear in a license plate, multiple groups of digital fonts and letter fonts are usually placed, and the designated fonts are manually selected from the numerous fonts. After the embossing is completed, the fonts need to be put back in place. The whole operation takes a long time and is prone to fatigue, which seriously affects work efficiency. Summary of the invention:

[0004] In order to solve the above problems, the object of the present invention is to provide a number plate production line.

[0005] The present invention is implemented by the following technical solutions:

[0006] A license plate production line comprises a frame, a license plate feeding mechanism, a license plate conveying mechanism, a character mold storage and retrieval mechanism, a character pressing mechanism, a license plate transfer mechanism and a character erasing mechanism;

[0007] The license plate feeding mechanism, the license plate conveying mechanism, the letter pressing mechanism, the letter mold storage and retrieval mechanism, the license plate transport mechanism and the letter erasing mechanism are all arranged on the frame;

[0008] The number plate feeding mechanism is used to store semi-finished number plates to be pressed and erased;

[0009] The license plate conveying mechanism is used to convey the semi-finished license plates on the license plate feeding mechanism to the letter pressing mechanism, and after the letter pressing is completed, the license plates are conveyed to the license plate transfer mechanism;

[0010] The character mold storage and access mechanism is used to store a number of character molds for number plate pressing, automatically select the character mold required for the number plate to be produced and send the selected character mold to the pressing mechanism, and automatically reset the selected character mold after the pressing is completed;

[0011] The letter pressing mechanism is located between the X-axis moving mechanism of the license plate conveying mechanism and the letter mold storage and access mechanism, and can complete the letter pressing process for the license plate;

[0012] The license plate transfer mechanism can transfer the pressed license plate to the eraser mechanism, and push the license plate that has completed the eraser process on the eraser mechanism out of the eraser mechanism, thereby realizing the function of discharging;

[0013] The word erasing mechanism can erase the ink on the surface of the embossed characters on the number plate after the characters are embossed.

[0014] Furthermore, the license plate loading mechanism includes a license plate storage rack; the license plate storage rack is a horizontal plate-like structure, and the bottom of the license plate storage rack is connected to the frame through a license plate lifting cylinder; a guide hole is also opened at the edge of the license plate storage rack, and a guide column is slidably provided in the guide hole, and the bottom end of the guide column is fixedly connected to the frame.

[0015] Furthermore, the license plate conveying mechanism includes an X-axis moving mechanism and a Y-axis moving mechanism; the Y-axis moving mechanism is arranged at a middle position of the X-axis moving mechanism along the moving direction;

[0016] The X-axis moving mechanism comprises an X-axis slide rail and an X-axis slider, the top of the X-axis slide rail is fixedly connected to the frame, the X-axis slider is slidably arranged in the X-axis slide rail, and the X-axis slider is driven by the X-axis moving motor; the bottom of the X-axis slider is connected to a horizontally arranged suction cup seat through a suction cylinder, and at least two vacuum suction cups are fixedly arranged on the bottom surface of the suction cup seat;

[0017] The Y-axis moving mechanism includes a Y-axis slide rail and a Y-axis slider. The Y-axis slide rail is fixed on the frame, the Y-axis slider is slidably arranged on the Y-axis slide rail, and the Y-axis slider is driven by a Y-axis moving motor.

[0018] Furthermore, the die storage and retrieval mechanism includes a die library, a die push rod and a die push cylinder;

[0019] The mold library comprises at least 6 sets of mold frames arranged side by side and vertical guide rails equal in number to the mold frames, wherein the vertical guide rails are fixedly arranged on the frame; each set of the mold frames is slidably arranged in the corresponding vertical guide rails, and each set of the mold frames is driven by a corresponding mold selection motor;

[0020] Each group of the mold racks includes a plurality of mold storage frames fixedly connected to each other, and each of the mold storage frames includes an upper mold storage grid and a lower mold storage grid arranged up and down;

[0021] The two sides of the character mold storage frame are connected, and a limiting plate is provided on one side of the character mold storage frame away from the character pressing mechanism;

[0022] A horizontally arranged die-pushing cylinder is also provided on one side of the die-storing frame away from the die-pressing mechanism, the cylinder body of the die-pushing cylinder is fixedly connected to the frame, the piston rod of the die-pushing cylinder is fixedly connected to the die-pushing rod, the number of the die-pushing rods is equal to the number of the die-storing frames, and the die-pushing rods can freely pass through the die-storing frame at the corresponding position in the horizontal direction and push the die stored in the die-storing frame into the die-pressing mechanism;

[0023] An electromagnet is also provided at the free end of the ejector rod.

[0024] Furthermore, the word pressing mechanism includes a word pressing frame, an upper frame, a lower frame and a word pressing cylinder;

[0025] The letter pressing frame comprises an upper pressing block and a lower pressing block, the cylinder body of the letter pressing cylinder is fixedly connected to the frame, and the top end of the piston rod of the letter pressing cylinder is fixedly connected to the lower pressing block; the upper pressing block is located directly above the lower pressing block and is fixedly connected to the frame; a baffle is provided on the side of the upper pressing block and the lower pressing block away from the character mold storage and access mechanism;

[0026] The upper frame and the lower frame are both horizontally arranged rectangular frame structures, and a placement groove matching the size of the license plate is opened on the frames on the relatively inner sides of the upper frame and the lower frame, and the sum of the depths of the placement grooves of the upper frame and the lower frame is consistent with the thickness of the license plate;

[0027] The upper frame is hinged to the lower frame at one side close to the die storage and retrieval mechanism, the lower frame is fixedly connected to the Y-axis slider of the license plate conveying mechanism through a fixing rod, and the upper frame is connected to the upper pressure block at one side away from the die storage and retrieval mechanism through an opening and closing connecting rod; the height of the lower pressure frame is within the gap between the upper pressure block and the lower pressure block.

[0028] Furthermore, the license plate transfer mechanism includes a transfer platform fixed on the frame, and the transfer platform is arranged below the X-axis moving mechanism of the license plate conveying mechanism. A push plate is provided for horizontal sliding at one end of the transfer platform, and the push plate is driven by a transfer motor. The thickness of the push plate is consistent with the thickness of the license plate; the other end of the transfer platform is flush with the reciprocating platform of the erasing mechanism and is adjacent to but not in contact with it.

[0029] Furthermore, the word erasing mechanism includes a film placing shaft, a film collecting shaft, a reciprocating platform and at least two word erasing rollers;

[0030] The film-laying shaft, the film-collecting shaft and the word-erasing roller are all rotatably connected to the frame, and are all arranged horizontally and above the reciprocating platform. A word-erasing non-woven fabric roll stained with a word-erasing solution is arranged on the film-laying shaft; the film-collecting shaft is driven by a film-collecting motor;

[0031] The reciprocating platform moves in the reciprocating guide rail in a direction perpendicular to the length direction of the erasing roller, the reciprocating guide rail is fixed on the frame, and the reciprocating platform is driven by the erasing motor; limit clamps for limiting the two ends of the license plate are respectively provided at both ends of the reciprocating platform;

[0032] The bottom side of the erasing roller contacts the surface of the number plate placed on the reciprocating platform.

[0033] Advantages of the present invention:

[0034] The present invention can realize the functions of automatic pressing and automatic erasing, which not only saves trouble and labor, but also improves production efficiency and avoids the problem of reduced product qualification rate caused by human errors. At the same time, each font is selected separately, which can not only select multiple fonts at the same time to avoid waiting time, but also avoid the situation where the fonts are insufficient. Even if there are multiple consecutive number plates, the fonts can be selected accurately and quickly. Description of the drawings:

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is a structural schematic diagram of the license plate feeding mechanism and the X-axis moving mechanism in this embodiment;

[0037] Figure 2 It is a structural schematic diagram of the letter pressing structure and the Y-axis moving mechanism when the upper frame and the lower frame are opened in this embodiment;

[0038] Figure 3 It is a schematic diagram of the side structure of the letter pressing frame, the upper frame and the lower frame;

[0039] Figure 4 It is a structural schematic diagram of the X-axis moving mechanism, the license plate transport mechanism, and the letter erasing mechanism in this embodiment;

[0040] Figure 5Schematic diagram of the structure of the font library in this embodiment;

[0041] Figure 6 It is a structural schematic diagram of the character mold frame in this embodiment;

[0042] Figure 7 Schematic diagram of the side structure of the font library in this embodiment;

[0043] Figure 8 for Figure 7 A local enlarged schematic diagram of the middle A;

[0044] Fig. 9 It is the control principle diagram in this embodiment;

[0045] In the figure: frame 1, license plate feeding mechanism 2, license plate storage rack 21, license plate lifting cylinder 22, guide column 23, guide hole 24, X-axis moving mechanism 31, X-axis slide rail 311, X-axis slider 312, X-axis moving motor 313, suction cylinder 314, suction cup seat 315, vacuum suction cup 316, Y-axis moving mechanism 32, Y-axis slide rail 321, Y-axis slider 322, Y-axis moving motor 323, font library 41, font rack 411, font storage frame 4111, limit plate 4112, vertical guide rail 412, font selection Motor 413, push rod 42, push cylinder 43, electromagnet 44, letter pressing frame 51, upper pressure block 511, lower pressure block 512, baffle 513, upper frame 52, lower frame 53, placement slot 54, letter pressing cylinder 55, fixing rod 56, opening and closing connecting rod 57, license plate transfer mechanism 6, transfer platform 61, push plate 62, transfer motor 63, film placing shaft 71, film collecting shaft 72, reciprocating platform 73, reciprocating guide rail 74, letter wiping roller 75, film collecting motor 76, letter wiping motor 77, limit card plate 78, touch screen 8, controller 9. Specific implementation method:

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] Embodiment 1:

[0048] like Figure 1 A license plate production line shown in FIG. 9 includes a frame 1, a license plate feeding mechanism 2, a license plate conveying mechanism, a character mold storage and retrieval mechanism, a character pressing mechanism, a license plate transport mechanism 6 and a character erasing mechanism;

[0049] The license plate feeding mechanism 2, the license plate conveying mechanism, the letter pressing mechanism, the letter mold storage and retrieval mechanism, the license plate transfer mechanism 6 and the letter erasing mechanism are all arranged on the frame 1;

[0050] The number plate feeding mechanism 2 is used to store semi-finished number plates to be pressed and erased;

[0051] The license plate conveying mechanism is used to convey the semi-finished license plates on the license plate feeding mechanism 2 to the lettering mechanism, and after the lettering is completed, the license plates are conveyed to the license plate transfer mechanism 6;

[0052] The character mold storage and access mechanism is used to store a number of character molds for number plate embossing, automatically select the character mold required for the number plate to be produced and send the selected character mold to the embossing mechanism, and automatically reset the selected character mold after the embossing is completed;

[0053] The letter pressing mechanism is located between the X-axis moving mechanism 31 of the license plate conveying mechanism and the letter mold storage and access mechanism, and can complete the letter pressing process for the license plate;

[0054] The license plate transfer mechanism 6 can transfer the pressed license plates to the wiping mechanism, and push the license plates that have completed the wiping process on the wiping mechanism out of the wiping mechanism to realize the function of discharging;

[0055] The eraser can erase the ink on the convex surface of the number plate after embossing.

[0056] Specifically, the license plate feeding mechanism 2 includes a license plate storage rack 21; the license plate storage rack 21 is a horizontal plate-shaped structure, and the bottom of the license plate storage rack 21 is connected to the frame 1 through a license plate lifting cylinder 22; a guide hole 24 is also opened at the edge of the license plate storage rack 21, and a guide column 23 is slidably provided in the guide hole 24, and the bottom end of the guide column 23 is fixedly connected to the frame 1. At the same time, the guide column 23 can also limit the license plates placed on the license plate storage rack 21, so that the edges of all license plates are aligned, so as to facilitate the smooth progress of subsequent processes such as license plate transportation.

[0057] Specifically, the license plate conveying mechanism includes an X-axis moving mechanism 31 and a Y-axis moving mechanism 32; the Y-axis moving mechanism 32 is arranged at the middle position of the X-axis moving mechanism 31 along the moving direction; the X-axis moving mechanism 31 includes an X-axis slide rail 311 and an X-axis slider 312, the top of the X-axis slide rail 311 is fixedly connected to the frame 1, the X-axis slider 312 is slidably arranged in the X-axis slide rail 311, and the X-axis slider 312 is driven by the X-axis moving motor 313; the bottom of the X-axis slider 312 is connected to the horizontally arranged suction cup seat 315 through the suction cylinder 314, and at least two vacuum suction cups 316 are fixedly arranged on the bottom surface of the suction cup seat 315; the Y-axis moving mechanism 32 includes a Y-axis slide rail 321 and a Y-axis slider 322, the Y-axis slide rail 321 is fixedly arranged on the frame 1, the Y-axis slider 322 is slidably arranged on the Y-axis slide rail 321, and the Y-axis slider 322 is driven by the Y-axis moving motor 323.

[0058] Specifically, the font access mechanism includes a font library 41, a push die rod 42 and a push die cylinder 43; the font library includes 6 groups of font frames 411 arranged side by side and vertical guide rails 412 equal to the number of font frames 411, and the vertical guide rails 412 are fixedly arranged on the frame 1; each group of font frames 411 are slidably arranged in the corresponding vertical guide rails 412, and each group of font frames 411 are driven by the corresponding font selection motor 413; each group of font frames 411 includes a plurality of font storage frames 4111 fixedly connected to each other, and each font storage frame 4111 includes an upper font storage grid and a lower font storage grid arranged up and down; the corresponding upper font is stored in the upper font storage grid, and the corresponding lower font is stored in the lower font storage grid; the two sides of the font storage frame 4111 are connected, and a limit plate 4112 is provided on one side of the font storage frame 4111 away from the word pressing mechanism;

[0059] A horizontally arranged die-pushing cylinder 43 is also provided on one side of the die-storing frame 4111 away from the character pressing mechanism. The cylinder body of the die-pushing cylinder 43 is fixedly connected to the frame 1, and the piston rod of the die-pushing cylinder 43 is fixedly connected to the die-pushing rod 42. The number of the die-pushing rods 42 is equal to the number of the die-storing frames 411. The die-pushing rod 42 can freely pass through the die-storing frame 4111 corresponding to the position in the horizontal direction and push the die stored in the die-storing frame 4111 into the character pressing mechanism; an electromagnet 44 is also provided at the free end of the die-pushing rod 42. After the character pressing is completed, the electromagnet 44 is energized to adsorb the die in the character pressing mechanism onto the die-pushing rod 42. As the piston rod of the die-pushing cylinder 43 contracts, the selected die is returned to the die-storing frame 4111.

[0060] Specifically, the letter pressing mechanism includes a letter pressing frame 51, an upper frame 52, a lower frame 53 and a letter pressing cylinder 55; the letter pressing frame 51 includes an upper pressing block 511 and a lower pressing block 512, the cylinder body of the letter pressing cylinder 55 is fixedly connected to the frame 1, and the top end of the piston rod of the letter pressing cylinder 55 is fixedly connected to the lower pressing block 512; the upper pressing block 511 is located directly above the lower pressing block 512 and is fixedly connected to the frame 1; a baffle 513 is provided on the side of the upper pressing block 511 and the lower pressing block 512 away from the letter mold access mechanism; the upper frame 52 and the lower frame 53 are both horizontally arranged rectangular frame structures, and a placement groove 54 matching the size of the license plate is provided on the frames on the relatively inner sides of the upper frame 52 and the lower frame 53, and the sum of the depths of the placement grooves 54 of the upper frame 52 and the lower frame 53 is consistent with the thickness of the license plate;

[0061] The upper frame 52 is hinged to the lower frame 53 on one side close to the type mold storage and retrieval mechanism, the lower frame 53 is fixedly connected to the Y-axis slider 322 of the license plate conveying mechanism through a fixing rod 56, and the upper frame 52 is connected to the upper pressure block 511 on the side away from the type mold storage and retrieval mechanism through an opening and closing connecting rod 57; the height of the lower pressure frame is within the gap between the upper pressure block 511 and the lower pressure block 512.

[0062] Specifically, the license plate transfer mechanism 6 includes a transfer platform 61 fixed on the frame 1. The transfer platform 61 is arranged below the X-axis moving mechanism 31 of the license plate conveying mechanism. A push plate 62 is horizontally slidably provided at one end of the transfer platform 61. The push plate 62 is driven by a transfer motor 63. The thickness of the push plate 62 is consistent with the thickness of the license plate. The other end of the transfer platform 61 is flush with the reciprocating platform 73 of the erasing mechanism and is adjacent to but not in contact with it.

[0063] Specifically, the erasing mechanism includes a film-laying shaft 71, a film-collecting shaft 72, a reciprocating platform 73 and at least two erasing rollers 75; the film-laying shaft 71, the film-collecting shaft 72 and the erasing rollers 75 are all rotatably connected to the frame 1, and are all horizontally arranged and arranged above the reciprocating platform 73, and a roll of wiping non-woven fabric soaked with an erasing solution is provided on the film-laying shaft 71; the film-collecting shaft 72 is driven by a film-collecting motor 76; the reciprocating platform 73 moves in a reciprocating guide rail 74 along a direction perpendicular to the length direction of the erasing roller 75, the reciprocating guide rail 74 is fixed on the frame 1, and the reciprocating platform 73 is driven by a erasing motor 77; limit clamps 78 for limiting the two ends of the license plate are respectively provided at both ends of the reciprocating platform 73; the bottom side of the erasing roller 75 is in contact with the surface of the license plate placed on the reciprocating platform 73.

[0064] In this embodiment, a touch screen 8 is also provided on the frame 1, and the signal output end of the touch screen 8 is connected to the signal input end of the controller 9, and the signal output end of the controller 9 is respectively connected to the signal input ends of the license plate lifting cylinder 22, the X-axis moving motor 313, the suction cylinder 314, the Y-axis moving motor 323, the character selection mold motor 413, the mold pushing cylinder 43, the electromagnet 44, the character pressing cylinder 55, the transfer motor 63, the film collecting motor 76 and the character erasing motor 77.

[0065] Job Description:

[0066] Before using this embodiment, multiple semi-finished number plates to be pressed and erased need to be placed on the number plate storage rack 21 at the same time, and the multiple number plates can be neatly placed under the action of the guide pillars 23 at the edge of the number plate storage rack 21. It is also necessary to input the numbers of the multiple number plates to be produced to the controller 9 through the touch screen 8 provided on the rack 1.

[0067] When this embodiment starts working, the vacuum suction cup 316 is in the initial position, that is, it is located directly above the license plate storage rack 21. First, the telescopic cylinder of the suction cylinder 314 extends to drive the vacuum suction cup 316 to descend. After descending to the height of the top license plate on the license plate storage rack 21, the vacuum suction cup 316 opens to suck up the top license plate. Then, the telescopic cylinder of the suction cylinder 314 contracts. Thereafter, the vacuum suction cup 316 is driven by the X-axis moving motor 313 to move together with the license plate to the Y-axis moving mechanism 32.

[0068] At this time, the Y-axis slider 322 and the lower frame 53 of the pressing mechanism are just in the initial position, that is, directly below the X-axis slide rail 311, the telescopic cylinder of the suction cylinder 314 extends again, and the vacuum suction cup 316 and the license plate descend and land in the placement groove 54 of the lower frame 53, the vacuum suction cup 316 is closed and stops adsorption, and then the telescopic cylinder of the suction cylinder 314 contracts, and then the Y-axis moving motor 323 drives the lower frame 53 and the license plate to move into the gap between the upper pressure block 511 and the lower pressure block 512. At the same time, during the movement of the lower frame 53, the upper frame 52, which was originally in an open state, gradually closes with the lower frame 53.

[0069] In the process of moving the license plate mentioned above, the font storage and access mechanism simultaneously performs the work of font selection. According to the number of the pressed license plate received in the controller 9, the six groups of font frames 411 respectively select their own fonts. Since the longitudinal position corresponding to each font in each group of font frames 411 is known, the displacement of the corresponding font selection motor 413 that needs to drive the font frame 411 to rise and fall when selecting a specific font is also determined. When the fonts to be selected are all moved to the position corresponding to the ejection rod 42, since the license plate is already in place at this time, the selected font can be pushed into the pressing mechanism by extending the piston rod of the ejection cylinder 43. Since the upper and lower character molds are stored separately, during the pushing process, the upper and lower character molds always move forward along the partitions on both sides of their respective storage compartments, and are pushed into the gap between the upper frame 52 and the upper pressure block 511 and the gap between the lower frame 53 and the lower pressure block 512 respectively. Since baffles 513 are provided on the side of the upper pressure block 511 and the lower pressure block 512 away from the character mold access mechanism, the upper and lower character molds will not be pushed excessively. When the character molds are pushed into place, the piston rod of the mold pushing cylinder 43 contracts, and the piston rod of the character pressing cylinder 55 extends, driving the lower pressure block 512 to move upward, thereby forming a backlog of the number plate. Under the action of the character mold, a number consistent with the selected character mold is pressed on the final number plate. After the letter pressing is completed, the piston rod of the letter pressing cylinder 55 contracts, and after the lower pressing block 512 is reset, the piston rod of the mold pushing cylinder 43 is extended again. After extending to the mold, the switch of the electromagnet 44 is turned on to energize the electromagnet 44, and the electromagnet 44 generates an attraction for the mold in the letter pressing mechanism. As the piston rod of the mold pushing cylinder 43 contracts, the mold is also sent back to the mold frame 411.

[0070] Next, the Y-axis moving motor 323 drives the lower frame 53 and the number plate after the number plate is pressed to move in the direction of the X-axis slide rail 311. During the movement, the upper frame 52, which was originally in a closed state, is gradually separated from the lower frame 53 by the action of the opening and closing connecting rod 57. When the lower frame 53 and the number plate after the number plate is pressed move to the bottom of the X-axis slide rail 311, the upper frame 52 is fully opened. At this time, the telescopic cylinder of the suction cylinder 314 is extended again, and the vacuum suction cup 316 is opened. After the number plate is sucked up, the telescopic cylinder of the suction cylinder 314 is retracted, and the vacuum suction cup 316 is driven by the X-axis moving motor 313 to move together with the number plate to the top of the transfer platform 61, and the number plate is placed on the transfer platform 61 by lowering the vacuum suction cup 316, and the vacuum suction cup 316 is raised.

[0071] Afterwards, the transfer motor 63 drives the push plate 62 to move and push the number plate on the transfer platform 61 to the reciprocating platform 73, and the erasing motor 77 drives the reciprocating platform 73 and the number plate to reciprocate. During the reciprocating movement, the film collecting shaft 72 pulls the eraser non-woven fabric roll soaked with the eraser solution, and the eraser non-woven fabric comes into contact with the surface of the number plate under the action of the eraser pressure roller 75, thereby erasing the ink on the convex surface of the number plate.

[0072] In the present embodiment, each time a license plate on the license plate storage rack 21 is sucked up, the license plate lifting cylinder 22 will drive the license plate storage rack 21 to rise to a height consistent with the thickness of a license plate. This ensures that the vacuum suction cup 316 descends to a consistent height each time, without increasing the descending height of the vacuum suction cup 316 each time.

[0073] In this embodiment, among the 6 groups of character mold racks 411, the first group of character mold racks 411 is used to store the abbreviations of the province, municipality directly under the central government, and autonomous region where the vehicle is located and the character molds corresponding to the first-level codes of the cities where the vehicle is located, such as Meng A; the second to sixth groups are respectively used to store the character molds corresponding to the five-digit serial numbers composed of letters or numbers and their combinations, such as 12345; therefore, the second to sixth groups of character mold racks 411 include a total of 34 pairs of character molds in 0-9 and AZ except I and O, and are arranged in sequence, while the first group of character mold racks 411 can store some character molds frequently used by license plate manufacturers.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A license plate production line, characterized in that: It includes a frame, a license plate feeding mechanism, a license plate conveying mechanism, a character mold storage and retrieval mechanism, a character pressing mechanism, a license plate transfer mechanism and a character erasing mechanism; The license plate feeding mechanism, the license plate conveying mechanism, the letter pressing mechanism, the letter mold storage and retrieval mechanism, the license plate transport mechanism and the letter erasing mechanism are all arranged on the frame; The number plate feeding mechanism is used to store semi-finished number plates to be pressed and erased; The license plate conveying mechanism is used to convey the semi-finished license plates on the license plate feeding mechanism to the letter pressing mechanism, and after the letter pressing is completed, the license plates are conveyed to the license plate transfer mechanism; The character mold storage and access mechanism is used to store a number of character molds for number plate pressing, automatically select the character mold required for the number plate to be produced and send the selected character mold to the pressing mechanism, and automatically reset the selected character mold after the pressing is completed; The letter pressing mechanism is located between the X-axis moving mechanism of the license plate conveying mechanism and the letter mold storage and access mechanism, and can complete the letter pressing process for the license plate; The license plate transfer mechanism can transfer the pressed license plate to the eraser mechanism, and push the license plate that has completed the eraser process on the eraser mechanism out of the eraser mechanism, thereby realizing the function of discharging; The word erasing mechanism can erase the ink on the surface of the embossed characters on the number plate after the characters are embossed.

2. A number plate production line according to claim 1, characterized in that: The license plate feeding mechanism includes a license plate storage rack; the license plate storage rack is a horizontal plate-like structure, and the bottom of the license plate storage rack is connected to the frame through a license plate lifting cylinder; a guide hole is also opened at the edge of the license plate storage rack, and a guide column is slidably provided in the guide hole, and the bottom end of the guide column is fixedly connected to the frame.

3. A number plate production line according to claim 1, characterized in that: The license plate conveying mechanism includes an X-axis moving mechanism and a Y-axis moving mechanism; the Y-axis moving mechanism is arranged at the middle position of the X-axis moving mechanism along the moving direction; The X-axis moving mechanism comprises an X-axis slide rail and an X-axis slider, the top of the X-axis slide rail is fixedly connected to the frame, the X-axis slider is slidably arranged in the X-axis slide rail, and the X-axis slider is driven by the X-axis moving motor; the bottom of the X-axis slider is connected to a horizontally arranged suction cup seat through a suction cylinder, and at least two vacuum suction cups are fixedly arranged on the bottom surface of the suction cup seat; The Y-axis moving mechanism includes a Y-axis slide rail and a Y-axis slider. The Y-axis slide rail is fixed on the frame, the Y-axis slider is slidably arranged on the Y-axis slide rail, and the Y-axis slider is driven by a Y-axis moving motor.

4. A number plate production line according to claim 1, characterized in that: The die storage and retrieval mechanism comprises a die library, a die ejection rod and a die ejection cylinder; The mold library comprises at least 6 sets of mold frames arranged side by side and vertical guide rails equal in number to the mold frames, wherein the vertical guide rails are fixedly arranged on the frame; each set of the mold frames is slidably arranged in the corresponding vertical guide rails, and each set of the mold frames is driven by a corresponding mold selection motor; Each group of the mold racks includes a plurality of mold storage frames fixedly connected to each other, and each of the mold storage frames includes an upper mold storage grid and a lower mold storage grid arranged up and down; The two sides of the character mold storage frame are connected, and a limiting plate is provided on one side of the character mold storage frame away from the character pressing mechanism; A horizontally arranged die-pushing cylinder is also provided on one side of the die-storing frame away from the die-pressing mechanism, the cylinder body of the die-pushing cylinder is fixedly connected to the frame, the piston rod of the die-pushing cylinder is fixedly connected to the die-pushing rod, the number of the die-pushing rods is equal to the number of the die-storing frames, and the die-pushing rods can freely pass through the die-storing frame at the corresponding position in the horizontal direction and push the die stored in the die-storing frame into the die-pressing mechanism; An electromagnet is also provided at the free end of the ejector rod.

5. The number plate production line according to claim 1, characterized in that: The word pressing mechanism comprises a word pressing frame, an upper frame, a lower frame and a word pressing cylinder; The letter pressing frame comprises an upper pressing block and a lower pressing block, the cylinder body of the letter pressing cylinder is fixedly connected to the frame, and the top end of the piston rod of the letter pressing cylinder is fixedly connected to the lower pressing block; the upper pressing block is located directly above the lower pressing block and is fixedly connected to the frame; a baffle is provided on the side of the upper pressing block and the lower pressing block away from the character mold storage and access mechanism; The upper frame and the lower frame are both horizontally arranged rectangular frame structures, and a placement groove matching the size of the license plate is opened on the frames on the relatively inner sides of the upper frame and the lower frame, and the sum of the depths of the placement grooves of the upper frame and the lower frame is consistent with the thickness of the license plate; The upper frame is hinged to the lower frame at one side close to the die storage and retrieval mechanism, the lower frame is fixedly connected to the Y-axis slider of the license plate conveying mechanism through a fixing rod, and the upper frame is connected to the upper pressure block at one side away from the die storage and retrieval mechanism through an opening and closing connecting rod; the height of the lower pressure frame is within the gap between the upper pressure block and the lower pressure block.

6. A number plate production line according to claim 1, characterized in that: The license plate transfer mechanism includes a transfer platform fixed on the frame, and the transfer platform is arranged below the X-axis moving mechanism of the license plate conveying mechanism. A push plate is provided at one end of the transfer platform for horizontal sliding. The push plate is driven by a transfer motor, and the thickness of the push plate is consistent with the thickness of the license plate; the other end of the transfer platform is flush with the reciprocating platform of the erasing mechanism and is adjacent to but not in contact with it.

7. The number plate production line according to claim 1, characterized in that: The word-erasing mechanism comprises a film-laying shaft, a film-collecting shaft, a reciprocating platform and at least two word-erasing rollers; The film-laying shaft, the film-collecting shaft and the word-erasing roller are all rotatably connected to the frame, and are all arranged horizontally and above the reciprocating platform. A word-erasing non-woven fabric roll stained with a word-erasing solution is arranged on the film-laying shaft; the film-collecting shaft is driven by a film-collecting motor; The reciprocating platform moves in the reciprocating guide rail in a direction perpendicular to the length direction of the erasing roller, the reciprocating guide rail is fixed on the frame, and the reciprocating platform is driven by the erasing motor; limit clamps for limiting the two ends of the license plate are respectively provided at both ends of the reciprocating platform; The bottom side of the erasing roller contacts the surface of the number plate placed on the reciprocating platform.

8. The number plate production line according to claim 1, characterized in that: A touch screen is also provided on the rack, and a signal output end of the touch screen is signal-connected to a signal input end of the controller.

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