Batch license plate manufacturing machine

Abstract

The invention provides a batch license plate manufacturing machine which comprises a rack, a plurality of first lifting mechanisms and a plurality of second lifting mechanisms are connected to the rack, each first lifting mechanism is connected with a male die set, each male die set comprises a plurality of male die blocks, each second lifting mechanism is connected with a female die set, and each female die set comprises a plurality of female die blocks. Each set of female die set comprises a plurality of female die blocks, a first push plate and a second push plate are connected to the rack in a sliding mode, a lifting plate used for supporting the male die blocks is connected to the first push plate in a sliding mode, a limiting structure used for limiting the female die blocks is connected to the second push plate, the lifting plate is located below the limiting structure, and the rack is connected with a pressing plate through a power mechanism; after the lifting plate and the limiting structure move in the direction close to the pressing plate and the male die block corresponds to the female die block, the pressing plate pushes the lifting plate to move in the direction close to the limiting structure and enables the blank located between the male die block and the female die block to be formed into the license plate, and the purposes of reducing the occupied space and improving the production efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the field of vehicle license plate production, in particular to a batch license plate production machine. Background Art

[0002] At present, a Chinese patent with the authorization announcement number CN215158945U discloses a license plate production device, which includes: a base, a font library for storing font groups is provided on the base, and a font manipulator for clamping fonts is provided above the font library; the font manipulator is movably installed on the screw rod slide rail and can move along the screw rod slide rail; a font frame for pressing the plate is provided in the base, and a font accommodating position and a plate accommodating position are provided in the font frame, and the screw rod slide rail passes through the top of the font frame, and a feeding mechanism for feeding the plate into the plate accommodating position is provided on the outside of the font frame, and a feeding mechanism for outputting the plate after being pressed by the font frame is provided below the font frame. The utility model is provided with a feeding mechanism, a feeding mechanism and a font manipulator respectively, so that the work of the upper and lower license plate plates and the upper and lower fonts can be carried out synchronously, reducing the waiting time between each process and further improving the efficiency of license plate production.

[0003] However, although the above license plate production equipment has improved some automation, it still has some shortcomings. In the patent description, the font module set stored in the font library is composed of two matching font modules. This means that when stored, the two font modules are usually stacked together and stored and clamped as a whole font module set.

[0004] Although this stacking method is convenient for pair management of font sets and robot gripping operations, it makes each font set occupy a relatively large space volume in the font library. With the increase of license plate number types (such as 5-digit or 6-digit codes) and font character types, the number of font sets that need to be stored in the font library also increases. This larger volume of a single font set will undoubtedly significantly increase the overall space requirement of the font library, which may limit the design of the equipment, volume control, and spatial layout of the production line.

[0005] In addition, when the existing license plate production equipment is performing various processes, although the font manipulator, loading mechanism and feeding mechanism can work synchronously, there is still room for further efficiency improvement. Therefore, how to optimize the storage method of the font group to reduce the space occupied by the font library and further improve production efficiency is a technical problem that needs to be solved in the current license plate production equipment field. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a batch license plate production machine, which improves production efficiency while reducing the space occupied by the volume.

[0007] To solve the above technical problems, the technical solution of the present invention is: A batch license plate making machine, including a frame, a plurality of first lifting mechanisms and a plurality of second lifting mechanisms are connected to the frame, a set of convex die groups are connected to each first lifting mechanism, each set of convex die groups includes a plurality of convex die blocks, a set of concave die groups are connected to each second lifting mechanism, each set of concave die groups includes a plurality of concave die blocks, a first push plate and a second push plate are slidably connected to the frame, a lifting plate is slidably connected to the first push plate, a card slot for driving the convex die block to move is opened on the lifting plate, a limiting structure for limiting the concave die block is connected to the second push plate, the lifting plate is located below the limiting structure, and the frame is connected with a pressing plate through a power mechanism; After the lifting plate and the limiting structure move towards the pressing plate and the convex die block corresponds to the concave die block, the pressing plate pushes the lifting plate towards the limiting structure and forms the blank located between the convex die block and the concave die block into a license plate.

[0008] To implement the above technical solution, when the batch license plate making machine is working, through a plurality of first lifting mechanisms and second lifting mechanisms, the independent convex die groups and concave die groups are accurately conveyed to the designated positions respectively. Then, the first push plate drives the lifting plate with the convex die block and cooperates with the limiting structure on the second push plate to accurately align the selected convex die block with the concave die block. Subsequently, the power mechanism drives the pressing plate to press upwards and pushes the lifting plate towards the limiting structure, so as to stamp and form the blank located between the convex die block and the concave die block, and complete the license plate making. By separately arranging the convex die groups and the concave die groups and controlling them by their respective independent lifting mechanisms, the convex die groups and the concave die groups can be independently managed during storage and transmission, thus avoiding the problem of excessive space occupation caused by traditional stacked letter molds, improving the storage efficiency of the letter mold library and the compactness of the equipment. At the same time, the parallel and cooperative work of multiple lifting mechanisms, as well as the automatic cooperation of the first push plate, the second push plate and the pressing plate, significantly reduce the waiting time between processes, thereby improving the overall efficiency and automation level of batch license plate making.

[0009] As a preferred solution of the present invention, the first lifting mechanism includes a first support frame, a second support frame, a first sliding plate and a first power component, the first support frame and the second support frame are both fixed on the frame and arranged along the height direction of the frame, the first support frame and the second support frame correspond to each other and there is a first channel for the lifting plate to move between the first support frame and the second support frame, the first sliding plate is driven by the first power component and slidably connected in the first support frame, the convex die group is slidably connected in the first support frame and the second support frame, and the first sliding plate pushes the convex die group to move along the height direction of the first support frame.

[0010] To implement the above technical solution, the operation of the first lifting mechanism starts with the first power component driving the first sliding plate to slide in the first support frame. Since the convex module is slidably connected between the first support frame and the second support frame, the movement of the first sliding plate will push the corresponding convex module to lift along the height direction of the first support frame and the second support frame. Through this lifting action, the selected convex block in the convex module can be accurately moved into the first channel and correspond to the lifting plate. Subsequently, the first push plate moves, causing the lifting plate to move out of the first channel and driving the selected convex block to move towards the pressing plate. At this time, the lifting plate stops between the pressing plate and the second support frame so as to accurately place the blank above the convex block. Immediately afterwards, the first push plate continues to move, causing the lifting plate to finally move directly above the pressing plate, preparing for the subsequent pressing operation. Thus, the stable and accurate vertical lifting and horizontal displacement of the convex block are achieved. This not only ensures that the convex block can be accurately taken out from its storage position, moved to the pressing station, and cooperated with the lifting plate for positioning, but also ensures the accurate placement of the blank on the convex block. In addition, this institutionalized continuous motion process significantly improves the picking, placing and positioning efficiency of the convex block, reduces manual intervention, and thus improves the automation level and overall production efficiency of license plate batch production.

[0011] As a preferred solution of the present invention, the first power component includes a first motor, a first optical rod and a first screw rod. The first motor and the first optical rod are fixed on the frame, the first screw rod is rotatably connected to the frame, the axis of the first optical rod is parallel to the axis of the first screw rod, the first motor drives the first screw rod to rotate, and the first sliding plate is slidably connected to the first optical rod and threadedly connected to the first screw rod.

[0012] To implement the above technical solution, when the first motor starts and drives the first screw rod to rotate, since the first sliding plate is connected to the first screw rod by threads and is simultaneously slidably connected to the first optical rod as a guide, the first sliding plate will move precisely and smoothly in a straight line along the direction parallel to the axes of the first optical rod and the first screw rod. By providing power through the first motor, combined with the rotation of the first screw rod and the guiding action of the first optical rod, a stable, high-precision and controllable linear reciprocating motion is provided for the first sliding plate, thus ensuring that the convex module it pushes can be accurately lifted and positioned, significantly improving the accuracy and reliability of character mold transfer and positioning in the license plate production process.

[0013] As a preferred solution of the present invention, an anti-disengagement plate is fixedly connected to the first push plate, a displacement groove is provided on the side wall of the lifting plate along the height direction of the lifting plate itself, and a displacement wheel is connected to the anti-disengagement plate, and the displacement wheel is located in the displacement groove.

[0014] To implement the above technical solution, in the batch license plate making machine, when it is necessary to stamp the blank, the power mechanism first drives the pressure plate to move upward. The pressure plate then pushes the lifting plate to move towards the concave module. During this process, the lifting plate moves upward, and relative movement occurs between the displacement groove and the displacement wheel. After the stamping and forming of the blank are completed, the power mechanism drives the pressure plate to move downward, and the displacement groove moves downward along the displacement wheel, thereby driving the lifting plate to smoothly reset downward. This cooperation between the up and down movement of the pressure plate and the displacement wheel in the displacement groove realizes the precise vertical positioning and smooth lifting of the lifting plate before and after pressing. Especially when the pressure plate moves downward, the displacement wheel rolls relative to the inner wall of the displacement groove, effectively avoiding the jamming phenomenon that may occur during the downward movement of the lifting plate, ensuring the smoothness and reliability of its movement. This not only improves the smoothness of the entire pressing cycle, reduces the equipment failure rate, but also guarantees the continuity and high efficiency of the license plate making process.

[0015] As a preferred solution of the present invention, the second lifting mechanism includes a third support frame, a fourth support frame, a second sliding plate, and a second power assembly. The third support frame and the fourth support frame are both fixed to the frame and arranged along the height direction of the frame. The third support frame and the fourth support frame are correspondingly arranged, and a second channel for the limiting structure to pass through is formed between the third support frame and the fourth support frame. The concave module group is slidably connected in the third support frame and the fourth support frame. The second sliding plate is driven by the second power assembly and is slidably connected in the third support frame. The second sliding plate pushes the concave module group to move along the height direction of the third support frame.

[0016] To implement the above technical solution, when the second lifting mechanism is working, the second power assembly drives the second sliding plate to slide vertically in the third support frame. Since the concave module group is slidably connected between the third support frame and the fourth support frame, the movement of the second sliding plate will push the concave module group to move up and down along the height direction of the third support frame and the fourth support frame, that is, the vertical direction. Through this lifting method, the selected concave module in the concave module group can be accurately moved and positioned in the second channel. Subsequently, when the second push plate moves, the limiting structure can drive all the selected concave modules to move synchronously, and finally accurately position these concave modules directly above the blank, preparing for the subsequent stamping operation. This not only ensures that the concave module can be accurately taken out from the storage position, uniformly moved above the pressure plate, and accurately aligned with the blank, thus guaranteeing the stamping quality. In addition, the limiting structure can drive all the selected concave modules to move simultaneously, significantly improving the batch conveying and positioning efficiency of the concave modules, reducing the operation time, and further improving the automation level and production efficiency of the entire license plate making equipment.

[0017] As a preferred embodiment of the present invention, the second power assembly includes a second motor, a second optical rod, and a second screw rod. The second motor and the second optical rod are fixed to the frame, the second screw rod is rotatably connected to the frame, the axis of the second optical rod is parallel to the axis of the second screw rod, the second motor drives the second screw rod to rotate, and the second slide plate is slidably connected to the second optical rod and threadedly connected to the second screw rod.

[0018] To implement the above technical solution, when the second motor is started and drives the second screw rod to rotate, since the second slide plate is connected to the rotating second screw rod through a thread and is simultaneously slidably connected to the second optical rod as a guide, this enables the second slide plate to move precisely and smoothly in a straight line along a direction parallel to the axes of the second optical rod and the second screw rod, that is, the vertical direction. This driving structure composed of the second motor, the second optical rod, and the second screw rod provides a stable and high-precision linear reciprocating motion for the second slide plate. The second optical rod ensures the smoothness and guiding property of the movement of the second slide plate, while the cooperation of the second screw rod and the second motor realizes the precise control of the position of the second slide plate, thereby ensuring that the concave die module it pushes can accurately lift and position, and further improving the accuracy and reliability of the concave die transmission and positioning in the entire license plate manufacturing process.

[0019] As a preferred embodiment of the present invention, the limiting structure includes a connecting groove, a first limiting groove, a second limiting groove, a first limiting strip, a second limiting strip, and an outer convex portion. The connecting groove is opened on the second push plate and penetrates through the second push plate. The first limiting groove and the second limiting groove are opened on the second push plate and communicate with the connecting groove. The first limiting groove and the second limiting groove are arranged oppositely. The first limiting strip is slidably connected in the first limiting groove, and the second limiting strip is slidably connected in the second limiting groove. The two outer convex portions are respectively arranged at both ends of the concave die module. The concave die module is located in the connecting groove and makes one outer convex portion supported by the first limiting strip and the other outer convex portion supported by the second limiting strip; When the second push plate moves from the second channel towards the direction close to the pressing plate and makes the first limiting strip and the second limiting strip approach each other through the elastic structure to support the outer convex portion, and when the second push plate moves in the direction away from the pressing plate and corresponds to the second channel, the first limiting strip, the second limiting strip and the outer convex portion are separated through the elastic structure.

[0020] To implement the above technical solution, when the limit structure is working, the two outer convex parts of the concave module are respectively supported by the first limit strip and the second limit strip in the connection groove, so that the concave module is firmly fixed and can move together with the second push plate. After the blank stamping is completed, the second push plate moves and enters the second channel. At this time, the first limit strip and the second limit strip will release the support for the concave module. This release mechanism ensures that when the concave module is selected next time, the concave module group can move freely in the connection groove without being blocked by the first limit strip and the second limit strip, so as to smoothly carry out the next round of die selection and positioning. This limit structure realizes the stable and reliable clamping, limiting and free movement of the concave module through the precise support and release of the outer convex part of the concave module by the first limit strip and the second limit strip. Especially when the concave module is released, the timely separation of the limit strip ensures the unobstructed movement of the concave module group in the connection groove, effectively avoiding jamming or interference during die selection and transmission, and significantly improving the die selection efficiency of the concave module and the operation fluency of the system. This not only ensures the precise positioning of the concave module before and after pressing, but also optimizes the smoothness and reliability of die replacement in the whole batch license plate production process.

[0021] As a preferred solution of the present invention, the elastic structure includes a stopper, an elastic member, a first rack, a second rack, a connecting block and a transmission gear. The transmission gear is rotatably connected to the second push plate. The first rack is fixedly connected to the first limit strip and meshes with the transmission gear. The second rack is fixedly connected to the second limit strip and meshes with the transmission gear. The first rack and the second rack are respectively located on both sides of the transmission gear. The connecting block is fixed to the outer wall of the first rack. The two ends of the elastic member are respectively connected to the connecting block and the second push plate. The stopper is fixed to the frame and is used to abut against the connecting block.

[0022] To implement the above technical solution, when the second push plate moves from the second channel toward the direction close to the pressure plate, the stopper and the connecting block are separated, and the elastic member is connected to the connecting block, and its tension acts on the first rack. Since the first rack is meshed with the transmission gear, and the transmission gear is meshed with the second rack at the same time, and the second rack is fixedly connected to the second limit bar, the tension of the elastic member can drive the first limit bar and the second limit bar to achieve synchronous mutual approach movement through this series of transmission mechanisms, thereby clamping the outer convex part of the concave module. When the second push plate moves away from the pressure plate and approaches the second channel, the stopper and the connecting block collide, and the elastic member is stretched. Similarly, this action drives the first rack and the second rack to move away from the transmission gear respectively, so that the first limit bar and the second limit bar are separated from the outer convex part of the concave module. This elastic structure realizes the precise clamping and reliable release of the concave module through the ingenious cooperation of the elastic member, the connecting block, the first rack, the second rack and the transmission gear. In particular, when the second push plate moves away from the pressing plate, the contact between the stopper and the connecting block cleverly triggers the stretching of the elastic member and the linkage of the rack, ensuring that the first limit bar and the second limit bar can be synchronously and quickly separated from the outer convex part of the concave module. This not only ensures the firm positioning of the concave module during pressing, but more importantly, optimizes the quick release process of the concave module and avoids jamming, thereby significantly improving the replacement efficiency of the concave module and the automation, stability and reliability of the entire license plate batch production process.

[0023] As a preferred solution of the present invention, the frame is connected to a transmission motor, a first connecting rod is fixedly connected to a power shaft of the transmission motor, a second connecting rod is hinged on the first connecting rod, the second connecting rod is fixedly connected to a height slide rail along its length direction, a horizontal slide rail is fixedly connected to the frame, a slider is slidably connected to the horizontal slide rail, the slider is slidably connected to the height slide rail on the side facing away from the horizontal slide rail, the second connecting rod is fixedly connected to a support frame, a feed suction cup and a discharging suction cup are connected to the support frame, the feed suction cup is used to place the blank on the lifting plate, and the discharging suction cup is used to remove the license plate from the lifting plate.

[0024] To implement the above technical solution, the drive motor is started, and its power shaft drives the fixedly connected first connecting rod to rotate. The first connecting rod drives the second connecting rod to perform a linkage motion. Since the second connecting rod is fixedly connected with a height slide rail along its own length direction, and the slider slides on the horizontal slide rail on the machine frame, and at the same time the slider is also slidably connected with the height slide rail, this enables the second connecting rod and the height slide rail thereon to drive the slider to move along the horizontal slide rail under the linkage action of the first connecting rod and the second connecting rod, and at the same time realize the complex trajectory motion of the support frame in space, including the composite displacement in the horizontal and vertical directions. Specifically, the feeding suction cup reaches the blank during the motion trajectory and sucks it, and accurately places it on the lifting plate; at the same time, the discharging suction cup reaches the formed license plate during the motion trajectory and sucks it, and takes the license plate off the lifting plate. This complex linkage mechanism composed of a drive motor, multi-stage connecting rods, a height slide rail, a horizontal slide rail and a slider provides a highly flexible, precise and automated three-dimensional space motion trajectory for the feeding suction cup and the discharging suction cup. The automatic feeding of the blank and the automatic discharging of the finished license plate are realized through a set of mechanisms, effectively replacing manual operations and greatly improving the automation level and production efficiency of license plate production.

[0025] As a preferred solution of the present invention, a plurality of limiting rods are fixedly connected to the side wall of the machine frame along the height direction of the machine frame. A support plate is slidably connected to the limiting rods. A receiving area for placing the blank is formed between the support plate and the plurality of limiting rods. A top rod parallel to the limiting rods is connected to the support plate. The feeding motor is connected to the machine frame. A worm is connected to the rotating shaft of the feeding motor. The worm meshes with a worm gear. The worm gear is rotatably connected to the machine frame. The top rod passes through the worm gear and is threadedly connected to the worm gear.

[0026] To implement the above technical solution, when the feeding motor is started and drives the worm to rotate, the worm drives the worm gear to rotate. Since the worm gear is threadedly connected to the top rod, the top rod can push the support plate to move, and the support plate is also slidably connected to the plurality of limiting rods arranged along the height direction on the side wall of the machine frame. Therefore, the support plate will perform a lifting motion along the vertical direction of the limiting rods. The lifting of the support plate enables the receiving area formed thereon to accurately adjust the height, so as to lift the blank placed therein to the position where the feeding suction cup can grab it, or lower it to supplement the blank after the feeding is completed. The mechanism composed of the limiting rods, the support plate, the top rod and the feeding motor realizes the automatic, stable and controllable vertical conveying and positioning of the blank, ensuring that the blank in the receiving area can always be accurately sent to the grabbing height of the feeding suction cup, thus simplifying the feeding process and improving the automation degree and efficiency of feeding. At the same time, the plurality of limiting rods provide stable guidance, preventing the support plate from shaking or jamming during the lifting process, and ensuring the smoothness and reliability of the blank conveying.

[0027] In summary, the present invention has the following beneficial effects: 1. Improved character mold management and storage efficiency, and optimized equipment compactness: By separating the convex module group and the concave module group and precisely controlling their transportation and positioning by independent lifting mechanisms respectively, this batch license plate making machine effectively avoids the problem of excessive space occupation caused by the traditional stacking of character molds. This significantly improves the storage efficiency of the character mold library, makes the equipment structure more compact, and is conducive to the miniaturization of the equipment and the flexibility of the production line layout.

[0028] 2. Significantly improved batch production efficiency and automation level: Through the parallel and collaborative work of multiple first lifting mechanisms and second lifting mechanisms, independent and precise transportation and alignment of the convex module group and the concave module group are achieved, greatly reducing the waiting time between processes. The automatic cooperation of the first push plate, the second push plate, the pressing plate and their respective linkage mechanisms ensures the efficient and continuous progress of links such as blank feeding, character mold alignment, stamping forming and finished product discharging, significantly improving the overall efficiency and automation level of the entire batch license plate production.

[0029] 3. Ensured the accuracy and reliability of character mold transmission and positioning: The first lifting mechanism, including the first support frame, the second support frame, the first sliding plate, the first motor, the first optical rod and the first screw rod, provides stable and high-precision vertical lifting and horizontal shifting capabilities for the convex module group, ensuring the accurate picking, placing, moving of the convex module and its coordinated positioning with the lifting plate, and further ensuring the precise placement of the blank on the convex module. The second lifting mechanism, including the third support frame, the fourth support frame, the second sliding plate, the second motor, the second optical rod and the second screw rod, realizes stable and high-precision vertical lifting and horizontal shifting of the concave module group, ensuring the accurate picking, unified moving of the concave module and its precise alignment with the blank, thus guaranteeing the stamping quality. The limiting structure, including the connecting groove, the first limiting groove, the second limiting groove, the first limiting strip, the second limiting strip, the outer convex part, and the elastic structure, including the stop block, the elastic part, the first rack, the second rack, the connecting block and the transmission gear, through delicate cooperation, realizes the automatic precise clamping and reliable release of the concave module, effectively avoiding jamming or falling off of the convex module and the concave module during the moving process, and optimizing the smoothness and reliability of the replacement of the convex module and the concave module.

[0030] 4. Achieved the automatic and stable conveying of the blank and the finished license plate: A complex linkage mechanism composed of a driving motor, a first connecting rod, a second connecting rod, a height slide rail, a horizontal slide rail, and a slider provides a highly flexible, precise, and automated three-dimensional spatial movement trajectory for the feeding suction cup and the discharging suction cup. The automatic feeding of the blank and the automatic discharging of the finished license plate are completed simultaneously by a set of mechanisms, effectively replacing manual operations and greatly improving the automation level and production efficiency of license plate production. The blank accommodating and conveying mechanism composed of a limiting rod, a support plate, a ejector rod, and a feeding motor realizes the automatic, stable, and controllable vertical conveying and positioning of the blank, ensuring that the blank in the accommodating area can always be accurately sent to the grasping height of the feeding suction cup, thus simplifying the feeding process and improving the automation degree and efficiency of feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the external structure of the present invention; Figure 2 is a schematic diagram showing the position of the blank; Figure 3 is a schematic diagram of the internal structure of the present invention; Figure 4 is a schematic diagram showing the structure of the first lifting mechanism; Figure 5 is a schematic diagram showing the structure of the first push plate; Figure 6 is a schematic diagram showing the structure of the lifting plate; Figure 7 is Figure 6 an enlarged view of part A of Figure 8 is a schematic diagram showing the structure of the second lifting mechanism; Figure 9 is a schematic diagram showing the position of the second push plate; Figure 10 is Figure 9 an enlarged view of part B of Figure 11 is a schematic diagram showing the limiting structure; Figure 12 is a schematic diagram showing the position of the convex module; Figure 13 is a schematic diagram showing the position of the pressing plate; Figure 14 is a schematic diagram showing the position when the license plate is formed; Figure 15 is a schematic diagram showing the structure of the support frame; Figure 16 is a schematic diagram showing the back structure of the support frame; Figure 17 is a schematic diagram showing the connection structure of the worm gear and the worm.

[0032] Reference numerals: 1, frame; 2, first lifting mechanism; 3, convex module; 4, first driving motor; 5, first gear; 6, first toothed belt; 7, second gear; 8, first transmission block; 9, first push plate; 10, first slide rail; 11, lifting plate; 12, card slot; 13, retaining piece; 14, displacement slot; 15, displacement wheel; 16, anti - detachment plate; 17, first support frame; 18, second support frame; 19, first slide plate; 20, first power assembly; 21, first motor; 22, first optical rod; 23, first screw rod; 24, third gear; 25, second toothed belt; 26, fourth gear; 27, second push plate; 28, concave module; 29, second lifting mechanism; 30, third support frame; 31, fourth support frame; 32, second slide plate; 33, second power assembly; 34, second motor; 35, second optical rod; 36, second screw rod; 37, second driving motor; 38, fifth gear; 39, sixth gear; 40, third toothed belt; 41, second transmission block; 42, second lead screw; 43, second slide rail; 44, limiting structure; 45, connection slot; 46, first limiting slot; 47, second limiting slot; 48, first limiting strip; 49, second limiting strip; 50, convex portion; 51, elastic structure; 52, stop block; 53, elastic member; 54, first rack; 55, second rack; 56, connection block; 57, conduction gear; 58, power mechanism; 59, pressing plate; 60, support block; 61, driving motor; 62, first connecting rod; 63, second connecting rod; 64, height slide rail; 65, horizontal slide rail; 66, support frame; 67, feeding suction cup; 68, discharging suction cup; 69, limiting rod; 70, support plate; 71, ejector rod; 72, loading motor; 73, blank; 74, first lead screw; 75, first channel; 76, second channel; 77, slider; 78, license plate; 79, bearing; 80, worm; 81, worm gear. Detailed implementation manners

[0033] The following further details the specific implementation manners of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0034] A batch license plate making machine includes a frame 1. Place the frame 1 horizontally. A plurality of first lifting mechanisms 2 and a plurality of second lifting mechanisms 29 are connected to the frame 1. The first lifting mechanisms 2 are located on the left side of the mid - line of the frame 1, and the second lifting mechanisms 29 are located on the right side of the mid - line of the frame 1.

[0035] Seven first lifting mechanisms 2 are arranged side by side along the width direction of the frame 1; seven second lifting mechanisms 29 are arranged side by side along the width direction of the frame 1.

[0036] Among the six adjacent first lifting mechanisms 2, each first lifting mechanism 2 is connected with a set of convex module groups. Each set of convex module groups includes 34 stacked convex modules 3. The 34 convex modules 3 are respectively 10 Arabic numeral convex modules 3 and 24 English letter convex modules 3. The convex module group in the seventh first lifting mechanism 2 located at the edge is the province and city convex module 3.

[0037] Correspondingly, among the six adjacent second lifting mechanisms 29, each second lifting mechanism 29 is connected with a set of concave module groups. Each set of concave module groups includes 34 stacked concave modules 28. The 34 concave modules 28 are respectively 10 Arabic numeral concave modules 28 and 24 English letter concave modules 28.

[0038] A first driving motor 4 is fixedly connected to the upper surface of the frame 1. The first driving motor 4 is a servo motor. A first gear 5 is fixedly connected to the first driving shaft of the first driving motor 4. The first gear 5 is connected with a second gear 7 through a first toothed belt 6. Both ends of the first lead screw 74 are rotatably connected to the frame 1 through bearings. The second gear 7 is fixed to the end of the first lead screw 74 and is coaxially arranged. A first transmission block 8 is threadedly connected to the first lead screw 74. The first transmission block 8 is fixedly connected with a first push plate 9. A first slide rail 10 is fixedly connected to the upper surface of the frame 1. Both sides of the first push plate 9 are slidably connected to the first slide rail 10. So as to realize that the first push plate 9 is slidably connected to the frame 1.

[0039] The first lead screw 74 is horizontally arranged. The axial direction of the first lead screw 74, the length direction of the frame 1, and the length direction of the first slide rail 10 are parallel.

[0040] A lifting plate 11 for supporting the convex module 3 is slidably connected to the end of the first push plate 9 along its height direction. The middle part of the lifting plate 11 has a through slot 12 in the up and down direction. A row of convex modules 3 is placed in the slot 12. There are retaining pieces 13 on the inner wall of the slot 12. The retaining pieces 13 are located between two adjacent convex modules 3.

[0041] The lifting plate 11 is provided with a displacement slot 14 along its height direction. An anti - detachment plate 16 is fixedly connected to the side wall of the first push plate 9. A displacement wheel 15 is rotatably connected to the side wall of the anti - detachment plate 16. The displacement wheel 15 is a bearing. The displacement wheel 15 is located in the displacement slot 14. A total of four displacement wheels 15 are provided and are respectively located at the four corners of the lifting plate 11. When the displacement wheel 15 abuts against the upper end of the displacement slot 14, the upper surface of the first push plate 9 and the upper surface of the lifting plate 11 are flush.

[0042] Accordingly, the lifting plate 11 can move along the length direction of the displacement slot 14.

[0043] The above-mentioned first lifting mechanism 2 includes a first support frame 17, a second support frame 18, a first sliding plate 19 and a first power assembly 20. The first support frame 17 and the second support frame 18 are both fixed to the frame 1 and are both arranged along the height direction of the frame 1. The first support frame 17 and the second support frame 18 correspond to each other and there is a first channel 75 for the lifting plate 11 to move between the first support frame 17 and the second support frame 18. The first support frame 17 is located below the first push plate 9, and the second support frame 18 is located above the first push plate 9.

[0044] The first sliding plate 19 is driven by the first power assembly 20 and is slidably connected in the first support frame 17. The first sliding plate 19 pushes the convex module group to move along the height direction of the first support frame 17.

[0045] The convex module group is placed in the first support frame 17 from the upper end of the second support frame 18 and is supported by the first sliding plate 19. Therefore, there must be a convex module 3 in each group of convex module groups located in the card slot 12 of the lifting plate 11. The width of the first channel 75 is greater than the thickness of one convex module 3 and less than the thickness of two convex modules 3 to ensure that only one convex module 3 in a group of convex module groups can move out of the first channel 75.

[0046] The first power assembly 20 includes a first motor 21, a first optical rod 22 and a first screw rod 23. The first motor 21 and the first optical rod 22 are fixed to the lower surface of the frame 1. The first motor 21, the first optical rod 22 and the first screw rod 23 are all vertically arranged, that is, along the height direction of the frame 1. The first screw rod 23 is rotatably connected to the frame 1. The axis of the first optical rod 22 is parallel to the axis of the first screw rod 23. The first motor 21 drives the first screw rod 23 to rotate. The first sliding plate 19 is slidably connected to the first optical rod 22 and is threadedly connected to the first screw rod 23. The first motor 21 is a servo motor.

[0047] When the first motor 21 drives the third gear 24 to rotate, the third gear 24 makes the fourth gear 26 rotate through the second toothed belt 25. The fourth gear 26 is fixed to the end of the first screw rod 23 and the fourth gear 26 is coaxially arranged with the first screw rod 23.

[0048] One first power assembly 20 corresponds to one group of convex module groups. Therefore, when the first motor 21 is started, the first sliding plate 19 moves along the length direction of the first optical rod 22. At the same time, the first sliding plate 19 can push the 34 convex modules 3 located above it to move up and down synchronously. After the selected convex module 3 is located in the card slot 12, the first sliding plate 19 stops moving. Therefore, all the convex module groups can move simultaneously, greatly improving the efficiency of selecting the convex module 3.

[0049] After all the convex modules 3 are located in the first channel 75, that is, in the card slot 12, the first driving motor 4 is turned on, and the first push plate 9 moves towards the middle of the frame 1. At this time, the displacement plate moves away from the first channel 75. At the same time, the first push plate 9 is located in the first channel 75 to prevent the position of the convex modules 3 in the convex module group from changing.

[0050] A limiting structure 44 for limiting the concave module 28 is connected to the second push plate 27.

[0051] The above-mentioned second lifting mechanism 29 includes a third support frame 30, a fourth support frame 31, a second sliding plate 32 and a second power assembly 33. Both the third support frame 30 and the fourth support frame 31 are fixed to the frame 1 and arranged along the height direction of the frame 1, that is, both the third support frame 30 and the fourth support frame 31 are vertically arranged. The third support frame 30 is located below the second push plate 27, and the fourth support frame 31 is located above the second push plate 27. The third support frame 30 and the fourth support frame 31 are correspondingly arranged, and a second channel 76 for the limiting structure 44 to pass through is formed between the third support frame 30 and the fourth support frame 31.

[0052] Both the first sliding plate 19 and the second sliding plate 32 are in an L-shaped structure.

[0053] The concave module group is placed in the third support frame 30 from the upper end of the fourth support frame 31 and supported by the second sliding plate 32. Therefore, there must be one concave module 28 in each group of concave module groups located in the limiting structure 44. The width of the second channel 76 is greater than the thickness of one concave module 28 and less than the thickness of two concave modules 28 to ensure that only one concave module 28 in a group of concave module groups can move out of the second channel 76.

[0054] The second sliding plate 32 is driven by the second power assembly 33 and is slidably connected in the third support frame 30. The second sliding plate 32 pushes the concave module group to move along the height direction of the third support frame 30.

[0055] The second power assembly 33 includes a second motor 34, a second optical rod 35 and a second screw rod 36. Both the second motor 34 and the second optical rod 35 are fixed to the frame 1 and vertically arranged. The second screw rod 36 is rotatably connected to the frame 1, and the axis of the second optical rod 35 is parallel to the axis of the second screw rod 36. The second motor 34 drives the second screw rod 36 to rotate. The second sliding plate 32 is slidably connected to the second optical rod 35 and is threadedly connected to the second screw rod 36. The second motor 34 is a servo motor. The second motor 34 drives the second screw rod 36 to rotate through gears and a toothed belt.

[0056] A second power component 33 corresponds to a set of concave module groups. Therefore, when the second motor 34 is started, the second slide plate 32 moves along the length direction of the second optical rod 35. At the same time, the second slide plate 32 can push 34 concave modules 28 located above it to move up and down synchronously. After the selected concave module 28 is located within the limit structure 44, the second slide plate 32 stops moving. Therefore, all the concave module groups can move simultaneously, greatly improving the efficiency of selecting the concave module 28.

[0057] After all the concave modules 28 are located within the limit structure 44, the second driving motor 37 is turned on, and the second push plate 27 moves towards the middle of the frame 1. At this time, the limit structure 44 moves away from the second channel 76. At the same time, the second push plate 27 is located within the second channel 76 to prevent the positions of the concave modules 28 within the concave module group from changing.

[0058] The second driving motor 37 is fixed to the upper surface of the frame 1. A fifth gear 38 is fixedly connected to the second driving shaft of the second driving motor 37. The fifth gear 38 drives the sixth gear 39 to rotate through a third toothed belt 40. The sixth gear 39 is fixed to the second lead screw 42 and is coaxially arranged with the second lead screw 42. The second lead screw 42 is horizontally arranged and the axis of the second lead screw 42 is parallel to the axis of the first lead screw 74. A second transmission block 41 is threadedly connected to the second lead screw 42, and the second transmission block 41 is fixedly connected to the second push plate 27. A second slide rail 43 is fixedly connected to the upper surface of the frame 1, and the second push plate 27 is slidably connected to the second slide rail 43. The length direction of the second slide rail 43 is parallel to the axial direction of the second lead screw 42.

[0059] The above-mentioned limit structure 44 includes a connection groove 45, a first limit groove 46, a second limit groove 47, a first limit strip 48, a second limit strip 49, and a convex portion 50. Each end of each concave module 28 has a convex portion 50.

[0060] The connection groove 45 is opened on the second push plate 27 and penetrates through the second push plate 27. A retaining piece 13 is also fixedly connected to the inner wall of the connection groove 45, and the retaining piece 13 is located between two adjacent concave modules 28.

[0061] The first limit groove 46 and the second limit groove 47 are opened on the second push plate 27 and communicate with the connection groove 45. The first limit groove 46 and the second limit groove 47 are oppositely arranged. The first limit strip 48 is slidably connected to the first limit groove 46, and the second limit strip 49 is slidably connected to the second limit groove 47.

[0062] Each concave module 28 is located within the connection groove 45, and one convex portion 50 is supported by the first limit strip 48, and the other convex portion 50 is supported by the second limit strip 49.

[0063] The second push plate 27 moves from the second channel 76 towards the pressing plate 59. Through the elastic structure 51, the first limiting strip 48 and the second limiting strip 49 approach each other and then support the convex portion 50.

[0064] When the second push plate 27 moves away from the pressing plate 59 and corresponds to the second channel 76, the elastic structure 51 separates the first limiting strip 48, the second limiting strip 49 from the convex portion 50, so as to facilitate the re-selection of the concave module 28.

[0065] The elastic structure 51 includes a stop block 52, an elastic member 53, a first rack 54, a second rack 55, a connecting block 56 and a transmission gear 57. The transmission gear 57 is rotatably connected to the second push plate 27, and the axis of the transmission gear 57 is arranged along the vertical direction. The end of the first rack 54 is fixedly connected to the first limiting strip 48, and the other end of the first rack 54 is meshed with the transmission gear 57.

[0066] The end of the second rack 55 is fixedly connected to the second limiting strip 49, and the other end of the second rack 55 is meshed with the transmission gear 57. The first rack 54 and the second rack 55 are respectively located on both sides of the transmission gear 57.

[0067] The connecting block 56 is vertically fixed to the outer wall of the first rack 54. The two ends of the elastic member 53 are respectively fixedly connected to the connecting block 56 and the second push plate 27. The stop block 52 is fixed to the frame 1 and is used to abut against the connecting block 56. The elastic member 53 is a tension spring.

[0068] There are two elastic structures 51 and they are respectively located on both sides of the second push plate 27.

[0069] Therefore, when the second motor 34 is started, the second sliding plate 32 moves along the length direction of the second optical rod 35. At the same time, the second sliding plate 32 can push the 34 concave modules 28 located above it to move up and down synchronously. Since the connecting block 56 and the stop block 52 remain in contact, neither the first limiting strip 48 nor the second limiting strip 49 contacts the convex portion 50. Therefore, the concave module group can move along the height direction of the third support frame 30. At the same time, the concave modules 28 in the concave module group can pass through the connecting groove 45. After all the selected concave modules 28 are located in the connecting groove 45, the second sliding plate 32 stops moving.

[0070] Then, the second driving motor 37 is started, and the second push plate 27 moves towards the middle of the frame 1. At this time, the second push plate 27 is placed in the second channel 76. Meanwhile, the stop block 52 and the connecting block 56 are separated. Under the elastic force of the elastic member 53, the first limiting strip 48 and the second limiting strip 49 can move towards each other to clamp both ends of the concave die block 28. Moreover, the convex portion 50 on the concave die block 28 is located above the first limiting strip 48 and the second limiting strip 49. At this time, the first limiting strip 48 and the second limiting strip 49 stably support the concave die block 28.

[0071] A pressing plate 59 is connected to the middle of the frame 1 through a power mechanism 58, and the power mechanism 58 is a hydraulic cylinder or a pneumatic cylinder. The pressing plate 59 is horizontally arranged.

[0072] When the lifting plate 11 moves from the first channel 75 to between the pressing plate 59 and the first channel 75, the blank 73 is placed on the convex die block 3. To prevent the blank 73 from moving, a plurality of positioning columns are fixedly connected to the upper surface of the lifting plate 11, and the positioning columns correspond to the positioning grooves on the blank 73, so that the blank 73 covers the convex die block 3 while preventing the blank 73 from moving on the lifting plate 11.

[0073] Positioning concave holes corresponding to the positioning columns are formed in the second push plate 27.

[0074] Subsequently, the lifting plate 11 moves above the pressing plate 59. Then, the limiting structure 44 is moved above the lifting plate 11.

[0075] A support block 60 is fixedly connected to the middle of the frame 1. The support block 60 is located above the limiting structure 44 and is arranged opposite to the pressing plate 59.

[0076] The convex die blocks 3 on the lifting plate 11 correspond to the concave die blocks 28 on the limiting structure 44 one by one. The convex die blocks 3 and the concave die blocks 28 are aligned in the vertical direction. Then, the power mechanism 58 is started to move the pressing plate 59 upward. The pressing plate 59 pushes the lifting plate 11 to move towards the limiting structure 44, and the displacement wheel 15 moves along the length direction of the displacement groove 14. With the cooperation of the support block 60, the convex die blocks 3, and the concave die blocks 28, the blank 73 is stamped into shape to obtain the license plate 78.

[0077] Subsequently, the pressing plate 59 moves downward and resets, and the limiting structure 44 moves into the second channel 76. The lifting plate 11 moves between the first channel 75 and the support block 60. After the license plate 78 is removed from the lifting plate 11, the lifting plate 11 moves into the first channel 75.

[0078] A transmission motor 61 is fixedly connected to the upper surface of the support block 60 of the frame 1, and the transmission motor 61 is horizontally arranged. The power shaft of the transmission motor 61 is fixedly connected to the lower end of the first connecting rod 62, and the upper end of the first connecting rod 62 is hinged to the upper end of the second connecting rod 63.

[0079] The second connecting rod 63 is fixedly connected with a height slide rail 64 along its own length direction, and the second connecting rod 63 is arranged vertically.

[0080] A horizontal slide rail 65 is fixedly connected to the frame 1, a slider 77 is slidably connected to the horizontal slide rail 65, and one side of the slider 77 facing away from the horizontal slide rail 65 is slidably connected to the height slide rail 64.

[0081] A support frame 66 is fixedly connected to the second connecting rod 63, and four feeding suction cups 67 and four discharging suction cups 68 are fixedly connected to the support frame 66. The four feeding suction cups 67 are located on the left side of the four discharging suction cups 68. The feeding suction cup 67 is used to place the blank 73 on the lifting plate 11, and the discharging suction cup 68 is used to take the license plate 78 off the lifting plate 11. Both the feeding suction cup 67 and the discharging suction cup 68 are connected to an air pump.

[0082] When the driving motor 61 is started, the first connecting rod 62 rotates, and the second connecting rod 63 moves up and down when translating along the horizontal slide rail 65, so that the second connecting rod 63 and the support frame 66 are in a state of arc movement.

[0083] A plurality of limiting rods 69 are fixedly connected to the side wall of the frame 1 along the height direction of the frame 1. A support plate 70 is slidably connected to the limiting rods 69, and an accommodating area for placing the blank 73 is formed between the support plate 70 and the plurality of limiting rods 69. A top rod 71 is fixedly connected to the lower surface of the support plate 70, and the axis of the top rod 71 is parallel to the axis of the limiting rod 69. The feeding motor 72 is fixedly connected to the frame 1. A worm 80 is fixedly connected to the rotating shaft of the feeding motor 72, and the worm 80 and the rotating shaft are coaxially arranged. The worm 80 meshes with a worm gear 81, and the worm gear 81 is rotatably connected to the frame 1 through a bearing 79. The top rod 71 passes through the worm gear 81 and is threadedly connected to the worm gear 81.

[0084] The feeding motor 72 is a servo motor.

[0085] I. Blank 73 Preparation and Loading: When loading is required, the loading motor 72 drives the worm 80 to rotate. The worm 80 drives the worm wheel 81 to rotate. Since the worm wheel 81 is threadedly connected to the ejector rod 71, the ejector rod 71 drives the support plate 70 to move up and down along the vertical direction of the limit rod 69, thereby precisely adjusting the height of the accommodation area and lifting the blank 73 therein to a position where it can be grasped by the feeding suction cup 67. Subsequently, the drive motor 61 located above the support block 60 is started, and its power shaft drives the fixedly connected first connecting rod 62 to rotate. The first connecting rod 62 drives the second connecting rod 63 to perform a linkage movement through hinge connection. Since the height slide rail 64 fixedly connected along the length direction of the second connecting rod 63 is slidably connected to the horizontal slide rail 65 on the frame 1, and the slider 77 slides on the horizontal slide rail 65 and is slidably connected to the height slide rail 64, the second connecting rod 63 and the height slide rail 64 thereon drive the slider 77 to move along the horizontal slide rail 65, and at the same time realize the complex trajectory movement of the support frame 66 in space, including the composite displacement in the horizontal and vertical directions. At this time, the feeding suction cup 67 connected to the support frame 66 reaches the blank 73 in the movement trajectory, sucks a blank 73 through the air pump, and precisely places it on the positioning post on the lifting plate 11. The positioning post corresponds to the positioning groove on the blank 73 to ensure that the blank 73 is firmly fixed on the lifting plate 11 and prevent it from moving.

[0086] II. Punch Selection and Positioning: Before loading the blank 73, the first lifting mechanism 2 starts to work. The first motor 21 drives the first screw 23 to rotate. Since the first sliding plate 19 is threadedly connected to the first screw 23 and slidably connected to the first optical rod 22, the first sliding plate 19 will move precisely and smoothly in a straight line along the vertical direction. The first sliding plate 19 pushes the punch group (composed of 34 stacked punch blocks 3) in the first support frame 17 and the second support frame 18 to move up and down synchronously. When the selected punch block 3 is located in the card slot 12 of the lifting plate 11, the first sliding plate 19 stops moving. All the punch groups can move simultaneously, greatly improving the efficiency of selecting the punch block 3. When all the selected punch blocks 3 are located in the first channel 75, that is, in the card slot 12 of the lifting plate 11, the first drive motor 4 is started to drive the first lead screw 74 to rotate, thereby driving the first transmission block 8 and the first push plate 9 fixedly connected thereto to move towards the middle of the frame 1. During this process, the lifting plate 11 and the selected punch blocks 3 thereon are driven to move away from the first channel 75 until the lifting plate 11 stops between the pressing plate 59 and the second support frame 18, and then the above-mentioned blank 73 is placed on the punch block 3. Then the lifting plate 11 is moved between the pressing plate 59 and the support block 60.

[0087] III. Selection and positioning of the female die: Synchronously with the selection of the male die, the second lifting mechanism 29 starts to work. The second motor 34 drives the second screw 36 to rotate. The second slide plate 32 is threadedly connected to the second screw 36 and slidably connected to the second optical rod 35, so that the second slide plate 32 moves linearly in the vertical direction precisely and smoothly. The second slide plate 32 pushes the female die group (composed of 34 stacked female die blocks 28) in the third support frame 30 and the fourth support frame 31 to move up and down synchronously. When the selected female die block 28 is located in the connection groove 45 in the limit structure 44, the second slide plate 32 stops moving. During this process, since the stop block 52 and the connection block 56 remain in contact, the elastic member 53 is not stretched, and neither the first limit bar 48 nor the second limit bar 49 contacts the convex portion 50 of the female die block 28, ensuring that the female die group can move freely along the height direction of the third support frame 30, and the female die block 28 can also pass through the connection groove 45 smoothly. After all the selected female die blocks 28 are located in the connection groove 45 in the limit structure 44, the second slide plate 32 stops moving. Since all the female die groups can move simultaneously, the efficiency of selecting the female die blocks 28 is greatly improved.

[0088] Subsequently, the second driving motor 37 is started to drive the second lead screw 42 to rotate, thereby driving the second push plate 27 to move towards the middle of the frame 1 through the second transmission block 41. At this time, the second push plate 27 is placed in the second channel 76. Meanwhile, the stop block 52 and the connection block 56 are separated, and the elastic member 53 in the elastic force structure 51 is compressed. Its pulling force drives the first limit bar 48 and the second limit bar 49 to move towards each other synchronously through the linkage of the connection block 56, the first rack 54, the transmission gear 57, and the second rack 55, so as to clamp both ends of the female die block 28 and make the convex portion 50 located above the first limit bar 48 and the second limit bar 49, thereby playing a role in stably supporting and limiting the female die block 28. The limit structure 44 (including the clamped female die block 28) moves above the horizontal plane of the lifting plate 11 and is located between the pressing plate 59 and the support block 60.

[0089] IV. Stamping and forming of the blank 73: After the male die blocks 3 on the lifting plate 11 correspond to the female die blocks 28 on the limit structure 44 one by one, and the blank 73 is accurately placed on the male die blocks 3, the power mechanism 58 starts to work and drives the pressing plate 59 to move upward. The pressing plate 59 pushes the lifting plate 11 to move towards the limit structure 44. During this process, the displacement groove 14 moves upward along its own length direction. With the close cooperation of the support block 60, the male die blocks 3, and the female die blocks 28, the blank 73 is accurately stamped and formed, and finally the license plate 78 is obtained.

[0090] V. Removal and reset of the finished license plate 78: After stamping, the power mechanism 58 drives the pressing plate 59 to move downward and reset. The displacement wheel 15 moves along the displacement groove 14, thereby driving the lifting plate 11 to move downward smoothly to avoid jamming. The limiting structure 44 moves with the second push plate 27 into the second channel 76, and the first limiting strip 48 and the second limiting strip 49 are separated from the convex part 50 of the concave die block 28, releasing the concave die block 28 for reselecting the concave die block 28 next time. At the same time, the lifting plate 11 moves between the first channel 75 and the support block 60. The discharging suction cup 68 connected to the support frame 66 reaches the formed license plate 78 in its movement track, sucks the license plate 78 through the air pump, and removes it from the lifting plate 11. After removing the license plate 78, the lifting plate 11 finally moves into the first channel 75, waiting for the next round of blank 73 feeding and die selection.

[0091] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A batch license plate making machine, comprising a frame (1), characterized in that: A plurality of first lifting mechanisms (2) and a plurality of second lifting mechanisms (29) are connected to the frame (1). A set of convex die modules is connected to each first lifting mechanism (2), and each set of convex die modules includes a plurality of convex die blocks (3). A set of concave die modules is connected to each second lifting mechanism (29), and each set of concave die modules includes a plurality of concave die blocks (28). A first push plate (9) and a second push plate (27) are slidably connected to the frame (1). A lifting plate (11) is slidably connected to the first push plate (9). A card slot (12) for driving the convex die block (3) to move is formed in the lifting plate (11). A limiting structure (44) for limiting the concave die block (28) is connected to the second push plate (27). The lifting plate (11) is located below the limiting structure (44). The frame (1) is connected to a pressing plate (59) through a power mechanism (58). After the lifting plate (11) and the limiting structure (44) move in the direction close to the pressing plate (59) and the convex die block (3) corresponds to the concave die block (28), the pressing plate (59) pushes the lifting plate (11) to move in the direction close to the limiting structure (44), and a blank (73) located between the convex die block (3) and the concave die block (28) is formed into a license plate (78).

2. The batch license plate making machine according to claim 1, characterized in that: The first lifting mechanism (2) includes a first support frame (17), a second support frame (18), a first sliding plate (19) and a first power assembly (20). The first support frame (17) and the second support frame (18) are both fixed to the frame (1) and arranged along the height direction of the frame (1). The first support frame (17) and the second support frame (18) correspond to each other, and a first channel (75) for the lifting plate (11) to move is provided between the first support frame (17) and the second support frame (18). The first sliding plate (19) is driven by the first power assembly (20) and slidably connected to the first support frame (17). The convex die module group is slidably connected to the first support frame (17) and the second support frame (18). The first sliding plate (19) pushes the convex die module group to move along the height direction of the first support frame (17).

3. The batch license plate making machine according to claim 2, characterized in that: The first power assembly (20) includes a first motor (21), a first optical rod (22) and a first screw rod (23). The first motor (21) and the first optical rod (22) are fixed to the frame (1). The first screw rod (23) is rotatably connected to the frame (1). The axis of the first optical rod (22) is parallel to the axis of the first screw rod (23). The first motor (21) drives the first screw rod (23) to rotate. The first sliding plate (19) is slidably connected to the first optical rod (22) and threadedly connected to the first screw rod (23).

4. A batch license plate making machine according to claim 1, characterized in that: An anti - detachment plate (16) is fixedly connected to the first push plate (9). A displacement groove (14) is formed in the side wall of the lifting plate (11) along the height direction of the lifting plate (11). A displacement wheel (15) is connected to the anti - detachment plate (16), and the displacement wheel (15) is located in the displacement groove (14).

5. The batch license plate making machine according to claim 1, characterized in that: The second lifting mechanism (29) includes a third support frame (30), a fourth support frame (31), a second sliding plate (32) and a second power assembly (33). The third support frame (30) and the fourth support frame (31) are both fixed to the frame (1) and arranged along the height direction of the frame (1). The third support frame (30) and the fourth support frame (31) are arranged correspondingly. A second channel (76) for the limiting structure (44) to pass through is formed between the third support frame (30) and the fourth support frame (31). The concave module is slidably connected to the third support frame (30) and the fourth support frame (31). The second sliding plate (32) is driven by the second power assembly (33) and is slidably connected to the third support frame (30). The second sliding plate (32) pushes the concave module to move along the height direction of the third support frame (30).

6. A batch license plate making machine according to claim 5, characterized in that: The second power assembly (33) includes a second motor (34), a second optical rod (35) and a second screw rod (36). The second motor (34) and the second optical rod (35) are fixed to the frame (1). The second screw rod (36) is rotatably connected to the frame (1). The axis of the second optical rod (35) is parallel to the axis of the second screw rod (36). The second motor (34) drives the second screw rod (36) to rotate. The second sliding plate (32) is slidably connected to the second optical rod (35) and is threadedly connected to the second screw rod (36).

7. A batch license plate making machine according to claim 5, characterized in that: The limiting structure (44) includes a connecting groove (45), a first limiting groove (46), a second limiting groove (47), a first limiting strip (48), a second limiting strip (49), and a convex portion (50). The connecting groove (45) is formed in the second push plate (27) and penetrates through the second push plate (27). The first limiting groove (46) and the second limiting groove (47) are formed in the second push plate (27) and communicate with the connecting groove (45). The first limiting groove (46) and the second limiting groove (47) are arranged oppositely. The first limiting strip (48) is slidably connected to the first limiting groove (46), and the second limiting strip (49) is slidably connected to the second limiting groove (47). The two convex portions (50) are respectively arranged at both ends of the concave module (28). The concave module (28) is located in the connecting groove (45), and one convex portion (50) is supported by the first limiting strip (48), and the other convex portion (50) is supported by the second limiting strip (49). The second push plate (27) moves from the second channel (76) towards the direction close to the pressing plate (59), and through the elastic structure (51), the first limiting strip (48) and the second limiting strip (49) are made to approach each other to support the convex portion (50). When the second push plate (27) moves in the direction away from the pressing plate (59) and corresponds to the second channel (76), through the elastic structure (51), the first limiting strip (48), the second limiting strip (49) and the convex portion (50) are separated.

8. The batch license plate making machine according to claim 7, characterized in that: The elastic structure (51) includes a stop block (52), an elastic member (53), a first rack (54), a second rack (55), a connecting block (56), and a transmission gear (57). The transmission gear (57) is rotatably connected to the second push plate (27). The first rack (54) is fixedly connected to the first limiting strip (48) and meshes with the transmission gear (57). The second rack (55) is fixedly connected to the second limiting strip (49) and meshes with the transmission gear (57). The first rack (54) and the second rack (55) are respectively located on both sides of the transmission gear (57). The connecting block (56) is fixed to the outer wall of the first rack (54). The two ends of the elastic member (53) are respectively connected to the connecting block (56) and the second push plate (27). The stop block (52) is fixed to the frame (1) and is used to abut against the connecting block (56).

9. A batch license plate making machine according to any one of claims 1-8, characterized in that: A transmission motor (61) is connected to the frame (1). A first connecting rod (62) is fixedly connected to the power shaft of the transmission motor (61). A second connecting rod (63) is hinged to the first connecting rod (62). A height slide rail (64) is fixedly connected to the second connecting rod (63) along its length direction. A horizontal slide rail (65) is fixedly connected to the frame (1). A slider (77) is slidably connected to the horizontal slide rail (65). The side of the slider (77) facing away from the horizontal slide rail (65) is slidably connected to the height slide rail (64). A support frame (66) is fixedly connected to the second connecting rod (63). An inlet suction cup (67) and an outlet suction cup (68) are connected to the support frame (66). The inlet suction cup (67) is used to place the blank (73) on the lifting plate (11). The outlet suction cup (68) is used to remove the license plate (78) from the lifting plate (11).

10. A batch license plate making machine according to claim 9, characterized in that: A plurality of limiting rods (69) arranged along the height direction of the frame (1) are fixedly connected to the side wall of the frame (1). A support plate (70) is slidably connected to the limiting rods (69). An accommodating area for placing the blank (73) is formed between the support plate (70) and the plurality of limiting rods (69). A ejector rod (71) parallel to the limiting rods (69) is connected to the support plate (70). A loading motor (72) is connected to the frame (1). A worm is connected to the rotating shaft of the loading motor (72). The worm meshes with a worm gear. The worm gear is rotatably connected to the frame. The ejector rod passes through the worm gear and is threadedly connected to the worm gear.

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