Concave matrix feeding device of batch license plate manufacturing machine

Abstract

The concave matrix feeding device of the batch license plate manufacturing machine comprises a machine frame and a concave matrix set, the machine frame is connected with a supporting frame arranged in the height direction of the machine frame, a plurality of partition plates are arranged on the inner wall of the supporting frame, the partition plates are arranged in the length direction of the supporting frame, and the concave matrix set is arranged in the length direction of the supporting frame. The supporting frame is divided into a plurality of containing cavities through the partition plates, each containing cavity is internally provided with a female die set, an adjusting structure used for pushing the female die sets to move in the height direction of the supporting frame is arranged on the rack or the supporting frame, and a channel is formed in the supporting frame. The machine frame is slidably connected with a push plate used for penetrating through the channel in the length direction of the machine frame, the push plate is provided with a containing groove corresponding to the containing cavity, the containing groove is provided with an elastic structure used for supporting a single concave character die in each concave die set, and the purpose of improving the production efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the field of vehicle manufacturing equipment, and particularly to a concave character die feeding device for a batch license plate making machine. Background Art

[0002] A license plate, as the only legal identity identifier of a motor vehicle, has absolute uniqueness in its number. In the current license plate manufacturing process, stamping technology is usually adopted to imprint characters on a metal plate. However, this field has long relied on manual or semi-automatic production modes. Specifically, on the production line, for each specific license plate number, operators need to manually search and select the required single concave character die from a huge die library, then pair these concave character dies with the corresponding convex character dies one by one, and install and fix them in the stamping die in sequence. Only after the die is assembled can a blank plate be placed into it for overall stamping. The semi-finished product after stamping then enters subsequent processes such as film covering.

[0003] This traditional manufacturing method has significant technical bottlenecks. First, the core links - the manual selection and arrangement of dies - are cumbersome and time-consuming, greatly limiting the production efficiency and making it difficult to meet the increasing demand for license plate issuance. Second, the intervention of manual operations brings many uncertainties, easily resulting in quality defects such as position deviation, uneven spacing, and inconsistent stamping depth of the stamped characters, affecting the standardization and uniformity of license plates. Therefore, the traditional manufacturing process can no longer meet the requirements of modern traffic management for efficient, accurate, and large-scale production of license plates.

[0004] To overcome the above defects, some automated improvement solutions have been proposed in the industry. For example, Chinese Patent Publication No. CN210363030U discloses a single-character stamping device. This device realizes the automated selection, loading, and unloading of a single die by setting an integrated die module, a moving module for automatically grasping and replacing the die, and a stamping module for stamping. During operation, the moving module can, according to instructions, automatically take out the specified single convex die and concave die from the die library and install them in the corresponding positions of the stamping module respectively to complete one stamping of the plate.

[0005] However, although this technology has achieved the automation of character mold replacement, its stamping principle still remains in the "single character at a time" mode. For a license plate number consisting of multiple characters, the device must repeatedly execute the cycle of "replacing the character mold, moving the plate, and stamping the character". For each character stamping, it is accompanied by an accurate positioning of the plate and a complete process of replacing the character mold. This sequential working method, although an improvement over pure manual operation, the frequent mechanical actions and process switching are still the key factors restricting the overall production rhythm. Especially in large-scale and continuous production scenarios, the efficiency improvement is relatively limited, and it fails to fundamentally solve the technical problem of the one-time rapid forming of multi-character license plates. There is still a large room for improvement in the automation level and production efficiency. Summary of the Invention

[0006] In view of this, the purpose of the present utility model is to provide a concave character mold feeding device for a batch license plate making machine to achieve the purpose of improving production efficiency.

[0007] To solve the above technical problems, the technical solution of the present utility model is: a concave character mold feeding device for a batch license plate making machine, including a frame and a concave module group. A support frame is connected to the frame along its height direction. A plurality of partition plates are arranged on the inner wall of the support frame. The plurality of partition plates are along the length direction of the support frame. The partition plates divide the support frame into a plurality of accommodating cavities. Each accommodating cavity has a set of concave module groups. An adjusting structure is arranged on the frame or the support frame for pushing the concave module group to move along the height direction of the support frame. A channel is opened on the support frame. A push plate is slidably connected to the frame along its length direction and is used to pass through the channel. A placing groove corresponding to the accommodating cavity is opened on the push plate. A resilient structure for supporting a single concave character mold in each set of concave module groups is arranged on the placing groove.

[0008] Implementing the above technical solution, the adjusting structure pushes a set of concave module groups to move along the height direction of the support frame to select the selected concave character mold in the concave module group to be located in the channel, that is, the concave character mold is located in the placing groove. Then, the push plate slides along the length direction of the frame. The push plate passes through the channel and makes all the concave character molds move out of the channel along with the push plate. At this time, the resilient structure on the placing groove will support all the concave character molds, take them out of the accommodating cavity and convey them to the stamping position. It completely gets rid of the efficiency bottleneck of the existing technology's "single character at a time" stamping, realizes the batch, rapid and accurate feeding of concave character molds, and greatly improves the production efficiency and automation level of license plate manufacturing.

[0009] As a preferred embodiment of the present utility model, the elastic structure includes a convex portion, a first support bar, a second support bar, and an elastic component. A first connection groove and a second connection groove communicating with the placement groove are formed on the push plate. The first connection groove and the second connection groove are oppositely arranged. The first support bar is slidably connected to the first connection groove, and the second support bar is slidably connected to the second connection groove. The two convex portions are respectively fixed to both ends of the concave character mold. The first support bar and the second support bar slide along the first connection groove and the second connection groove respectively to support the convex portion.

[0010] When the placement groove corresponds to the channel, the elastic component separates the first support bar and the second support bar from the convex portion. When the placement groove is misaligned with the channel, the elastic component causes the first support bar and the second support bar to support the convex portion.

[0011] To achieve the above technical solution, when the placement groove is aligned with the channel, the elastic component can quickly push the first and second support bars away from the convex portion of the concave character mold, enabling the concave character mold to move freely in the placement groove and be accurately selected under the drive of the adjustment structure, greatly improving the flexibility and automation of mold selection. Once the placement groove is misaligned with the channel, that is, when the concave character mold is carried and moved by the push plate, the elastic component will immediately act in the opposite direction, causing the first and second support bars to tightly clamp and stably support the convex portion of the concave character mold, effectively avoiding problems such as dropping, shaking, or inaccurate positioning. Greatly improving the automation level, efficiency, and reliability of the concave character mold feeding.

[0012] As a preferred embodiment of the present utility model, the elastic component includes a first connection bar, a second connection bar, a rotating wheel, and an elastic mechanism. The rotating wheel is rotatably connected to the push plate. The first connection bar is fixedly connected to the first support bar and meshes with the rotating wheel. The second connection bar is fixedly connected to the second support bar and meshes with the rotating wheel. The first connection bar and the second connection bar are respectively located on both sides of the rotating wheel. The elastic mechanism drives the movement of the first connection bar and / or the second connection bar.

[0013] To achieve the above technical solution, since the first connection bar is fixedly connected to the first support bar and meshes with the rotating wheel, and the second connection bar is fixedly connected to the second support bar and also meshes with the rotating wheel, and the first and second support bars are respectively located on both sides of the rotating wheel. Therefore, when the elastic mechanism drives the movement of the first connection bar and / or the second connection bar, it will drive the first support bar and the second support bar to slide synchronously in the corresponding connection grooves of the push plate through the rotation of the rotating wheel. Significantly improving the synchronism, stability, and accuracy of the concave character mold grasping and releasing.

[0014] As a preferred embodiment of the present utility model, the elastic mechanism includes an elastic member, a stopper, and a limit block. The limit block is connected to the frame, the stopper is fixed to the first connecting bar and / or the second connecting bar, and two ends of the elastic member are respectively connected to the push plate and the stopper. The stopper is used to abut against the limit block.

[0015] To achieve the above technical solution, when the stopper abuts against the limit block on the frame, the movement of the stopper is restricted, while the push plate continues to move until the placement groove corresponds to the channel. At this time, the elastic member is compressed or stretched, and the elastic force generated by it will drive the first connecting bar and / or the second connecting bar to move, so that the first support bar and the second support bar separate the convex portions. Similarly, when the stopper separates from the limit block, under the action of the elastic force of the elastic member, the first support bar and the second support bar tightly support the convex portions on both sides of the concave character mold. This not only improves the automation level of the feeding process, but also effectively ensures the position accuracy and transmission stability of the concave character mold at different stages through precise mechanical linkage.

[0016] As a preferred embodiment of the present utility model, the adjustment structure includes an adjustment motor, an adjustment plate, a rotating rod, and a sliding rod. The sliding rod is connected to the frame, the rotating rod is rotatably connected to the frame, the axial directions of both the sliding rod and the rotating rod are parallel to the height direction of the support frame. The adjustment plate supports the concave module group, the adjustment plate is slidably connected to the sliding rod and threadedly connected to the rotating rod, and the adjustment motor drives the rotating rod to rotate.

[0017] To achieve the above technical solution, the adjustment motor drives the rotating rod to rotate. Since the adjustment plate is threadedly connected to the rotating rod and slidably connected to the sliding rod, when the rotating rod rotates, it will drive the adjustment plate to move upward or downward along its own and the axial direction of the sliding rod. Because the adjustment plate supports the concave module group, the lifting movement of the adjustment plate will drive the entire concave module group to move along the height direction of the support frame. This process realizes the precise position adjustment of the concave module group in the vertical direction, so that the selected concave character mold can be located in the channel, that is, in the placement groove. It realizes the automatic and precise vertical positioning of the concave module group in the height direction of the support frame.

[0018] As a preferred embodiment of the present utility model, a first connecting wheel is connected to the rotating shaft of the adjustment motor, a second connecting wheel is connected to the rotating rod, and the first connecting wheel drives the second connecting wheel to rotate through a connecting belt.

[0019] To implement the above technical solution, after the adjustment motor starts, the first connecting wheel on its rotating shaft will rotate accordingly. The first connecting wheel is connected to the second connecting wheel on the rotating rod through a connecting belt. Therefore, the rotation of the first connecting wheel will be transmitted through the connecting belt, driving the second connecting wheel to rotate, and then driving the rotating rod to rotate synchronously. This indirect transmission method effectively reduces the impact and noise during operation, improves the smoothness and stability of the operation of the entire adjustment mechanism, provides flexibility in installation, and is also convenient for maintaining the adjustment motor.

[0020] As a preferred solution of the present utility model, a power mechanism for driving the push plate to move is provided on the frame.

[0021] To implement the above technical solution, the power mechanism provided on the frame will directly act on the push plate and drive it to slide along the length direction of the frame. This movement of the push plate will cause the concave character mold carried thereon to be pushed out of the channel or sent back to the receiving cavity, realizing the lateral feeding and discharging of the concave character mold, and achieving the automation and high efficiency of the feeding and discharging of the concave character mold.

[0022] As a preferred solution of the present utility model, the power mechanism includes a power motor, a screw rod, a connecting block, a slide rail, and a slider. The screw rod is rotatably connected to the frame. The connecting block is threadedly connected to the screw rod and fixedly connected to the push plate. The axial direction of the screw rod is parallel to the length direction of the frame. The slide rail is fixed to the frame, and the length direction of the slide rail is parallel to the length direction of the frame. The slider is fixed to the push plate and slidably connected to the slide rail.

[0023] To implement the above technical solution, after the power motor starts, its rotating shaft will drive the screw rod to rotate. Since the connecting block is threadedly connected to the screw rod and the connecting block is fixedly connected to the push plate, when the screw rod rotates, the connecting block and the push plate will move linearly along the axial direction of the screw rod as the screw rod rotates. At the same time, the slider is fixed to the push plate and slides on the slide rail fixed to the frame, which provides stable guidance and support for the linear movement of the push plate. Therefore, the rotation of the power motor is finally converted into precise and stable horizontal reciprocating movement of the push plate, thereby realizing the feeding and discharging of the concave character mold. This design not only ensures the accuracy and repeatability of the position of the concave character mold during the feeding and discharging process, effectively avoiding the deviation and instability of the traditional method, but also significantly improves the operation smoothness, efficiency, and automation level of the entire batch license plate making machine through reliable mechanical transmission.

[0024] As a preferred solution of the present utility model, a driving wheel is fixedly connected to the power shaft of the power motor, a driven wheel is fixedly connected to the screw rod, and the driving wheel is connected to the driven wheel through a transmission belt.

[0025] To implement the above technical solution, when the power motor starts and rotates, the driving wheel fixedly connected to its power shaft will rotate accordingly. The driving wheel is connected to the driven wheel fixedly connected to the screw through a transmission belt. The rotational force of the driving wheel is transmitted to the driven wheel through the transmission belt, thereby driving the screw to rotate. The rotation of the screw will drive the push plate to move linearly, completing the feeding and discharging operation of the concave die. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0027] Figure 2 is Figure 1 an enlarged view of part A of

[0028] Figure 3 is a schematic diagram showing the position of the adjustment motor;

[0029] Figure 4 is a schematic diagram showing the connection structure of the support frame and the push plate;

[0030] Figure 5 is a schematic diagram showing the structure of the support frame;

[0031] Figure 6 is a schematic diagram showing the structure of the adjustment plate;

[0032] Figure 7 is a schematic diagram showing the structure of the push plate;

[0033] Figure 8 is a schematic diagram showing the lower surface structure of the push plate;

[0034] Figure 9 is a schematic diagram showing the position of the rotating wheel;

[0035] Figure 10 is Figure 9 an enlarged view of part B of

[0036] Reference numerals: 1, frame; 2, support frame; 3, partition; 4, adjustment structure; 5, adjustment motor; 6, adjustment plate; 7, rotating rod; 8, sliding rod; 9, first connecting wheel; 10, second connecting wheel; 11, connecting belt; 12, channel; 13, power mechanism; 14, power motor; 15, screw; 16, connecting block; 17, slide rail; 18, slider; 19, driving wheel; 20, driven wheel; 21, transmission belt; 22, placement groove; 23, elastic structure; 24, convex portion; 25, first support bar; 26, second support bar; 27, elastic component; 28, first connecting bar; 29, second connecting bar; 30, rotating wheel; 31, elastic mechanism; 32, elastic member; 33, stop block; 34, limiting block; 35, spacer; 36, first cover plate; 37, second cover plate; 38, third cover plate; 39, concave die; 40, push plate. Specific Embodiment

[0037] The following further details the specific embodiments of the present utility model in conjunction with the accompanying drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0038] A concave character mold feeding device for a batch license plate making machine includes a frame 1 and a concave module group. A support frame 2 is connected to the frame 1 along the height direction of the frame 1 itself, that is, the support frame 2 is vertically arranged. A plurality of partition plates 3 are arranged on the inner wall of the support frame 2, and the plurality of partition plates 3 are arranged along the length direction of the support frame 2, and the partition plates 3 are vertically arranged. The plurality of partition plates 3 divide the support frame 2 into a plurality of accommodating cavities, and each accommodating cavity has a set of concave module groups. The concave module group includes a plurality of concave character molds 39, and the plurality of concave character molds 39 are stacked in the accommodating cavity.

[0039] An adjusting structure 4 is arranged on the frame 1 for pushing the concave module group to move along the height direction of the support frame 2. Each accommodating cavity corresponds to an adjusting structure 4.

[0040] The adjusting structure 4 includes an adjusting motor 5, an adjusting plate 6, a rotating rod 7 and a sliding rod 8. The sliding rod 8 is connected to the frame 1, the rotating rod 7 is rotatably connected to the frame 1, and the axial direction of the sliding rod 8 and the axial direction of the rotating rod 7 are both parallel to the height direction of the support frame 2. There are two sliding rods 8 and they are respectively located on both sides of the rotating rod 7. The rotating rod 7 is a lead screw.

[0041] The adjusting plate 6 is arranged in an L shape and is used to support the concave module group. The adjusting plate 6 is located below the concave module group. The adjusting plate 6 is slidably connected to the sliding rod 8 and is threadedly connected to the rotating rod 7, and the adjusting motor 5 drives the rotating rod 7 to rotate.

[0042] A first connecting wheel 9 is fixedly connected to the rotating shaft of the adjusting motor 5, and the rotating shaft and the first connecting wheel 9 are coaxially arranged. A second connecting wheel 10 is fixedly connected to the end of the rotating rod 7, and the rotating rod 7 and the second connecting wheel 10 are coaxially arranged. The first connecting wheel 9 drives the second connecting wheel 10 to rotate through a connecting belt 11. The first connecting wheel 9 and the second connecting wheel 10 are gears, and the connecting belt 11 is a toothed belt.

[0043] A channel 12 is opened on the support frame 2. The channel 12 is located in the middle of the support frame 2 and is arranged along the transverse direction of the support frame 2. The channel 12 divides the support frame 2 into upper and lower parts. A push plate 40 for passing through the channel 12 is slidably connected to the frame 1 along the length direction of the frame 1 itself.

[0044] A power mechanism 13 for driving the movement of the push plate 40 is provided on the frame 1. The power mechanism 13 includes a power motor 14, a screw 15, a connecting block 16, a slide rail 17, and a slider 18. Among them, the screw 15 is rotatably connected to the frame 1, and the axial direction of the screw 15 is parallel to the length direction of the frame 1, that is, it is arranged along the horizontal direction. The connecting block 16 is threadedly connected to the screw 15 and fixedly connected to the push plate 40. The slide rail 17 is fixed to the frame 1, and the length direction of the slide rail 17 is parallel to the length direction of the frame 1. The slider 18 is fixed to the push plate 40 and slidably connected to the slide rail 17.

[0045] A driving wheel 19 is fixedly connected to the power shaft of the power motor 14, and the axis of the driving wheel 19 is collinear with the axis of the power shaft. A driven wheel 20 is fixedly connected to the screw 15, and the driven wheel 20 is coaxially arranged with the screw 15. The driving wheel 19 is connected to the driven wheel 20 through a transmission belt 21. Both the driving wheel 19 and the driven wheel 20 are gears, and the transmission belt 21 is a toothed belt.

[0046] A placement groove 22 corresponding to all the accommodation cavities is formed at the end of the push plate 40, and the placement groove 22 is square. An elastic structure 23 for supporting a single concave character die 39 in each set of concave die groups is provided on the placement groove 22, that is, when the adjustment motor 5 is started, the adjustment plate 6 moves along the length direction of the slide rod 8, and the concave die group moves up and down along the accommodation cavity, so that the selected concave character die 39 is located in the channel 12 and also in the placement groove 22, so that all the selected concave character dies 39 are located in the placement groove 22.

[0047] The width of the channel 12 is greater than the thickness of one concave character die 39 and less than the thickness of two concave character dies 39 to ensure that only one concave character die 39 in each set of concave die groups moves out of the channel 12 each time.

[0048] The elastic structure 23 includes an outward convex part 24, a first support bar 25, a second support bar 26, and an elastic component 27. A first connection groove and a second connection groove communicating with the placement groove 22 are formed on the upper surface of the push plate 40. The first connection groove and the second connection groove are oppositely arranged.

[0049] The first support bar 25 is slidably connected in the first connection groove, and the second support bar 26 is slidably connected in the second connection groove.

[0050] Two outward convex parts 24 are respectively fixed at both ends of the concave character die 39, and the outward convex part 24 is integrally arranged with the concave character die 39.

[0051] When the placement groove 22 corresponds to the channel 12, the elastic component 27 separates the first support bar 25 and the second support bar 26 from the outward convex part 24. When the placement groove 22 is misaligned with the channel 12, the elastic component 27 enables the first support bar 25 and the second support bar 26 to support the outward convex part 24. Two groups of elastic components 27 are provided and are respectively located at both ends of the placement groove 22.

[0052] The elastic component 27 includes a first connecting bar 28, a second connecting bar 29, a rotating wheel 30 and an elastic mechanism 31. The rotating wheel 30 is rotatably connected to the push plate 40, and the rotating wheel 30 is horizontally arranged. One end of the first connecting bar 28 is fixedly connected to the first support bar 25, and the other end of the first connecting bar 28 meshes with the rotating wheel 30.

[0053] One end of the second connecting bar 29 is fixedly connected to the second support bar 26, and the other end of the second connecting bar 29 meshes with the rotating wheel 30. The first connecting bar 28 and the second connecting bar 29 are respectively located on both sides of the rotating wheel 30.

[0054] The first connecting bar 28 and the second connecting bar 29 are racks, and the rotating wheel 30 is a gear.

[0055] The elastic mechanism 31 drives the first connecting bar 28 to move.

[0056] The elastic mechanism 31 includes an elastic member 32, a stop block 33 and a limit block 34. The limit block 34 is fixedly connected to the frame 1, the stop block 33 is fixed to the side wall of the first connecting bar 28 and extends in a direction away from the push plate 40. The two ends of the elastic member 32 are respectively connected to the push plate 40 and the stop block 33, and the stop block 33 is used to abut against the limit block 34. The elastic member 32 is a tension spring.

[0057] After all the selected concave character dies 39 are located in the placement groove 22, the push plate 40 moves out of the channel 12 and moves in a direction close to the stamping position. The stop block 33 is separated from the limit block 34. Under the elastic force of the elastic member 32, the first connecting bar 28 moves in a direction close to the rotating wheel 30, the rotating wheel 30 rotates, and the second connecting bar 29 also moves in a direction close to the rotating wheel 30, so that the first support bar 25 and the second support bar 26 move in a direction close to each other. While the two ends of the concave character die 39 are clamped by the first support bar 25 and the second support bar 26, the first support bar 25 and the second support bar 26 support the convex portion 24, so that all the selected concave character dies 39 are stably moved out of the channel 12.

[0058] Similarly, after the license plate stamping is completed, the push plate 40 moves in a direction close to the channel 12. When the placement groove 22 on the push plate 40 is close to the channel 12, the limit block 34 and the stop block 33 abut. When the placement groove 22 and the channel 12 correspond, since the limit block 34 restricts the movement of the stop block 33, therefore, the first connecting bar 28 moves relatively in a direction away from the rotating wheel 30, the rotating wheel 30 rotates, and the second connecting bar 29 moves in a direction away from the rotating wheel 30. Thus, both the first support bar 25 and the second support bar 26 are separated from the convex portion 24.

[0059] At this time, the concave character die 39 can be selected again.

[0060] A spacer 35 is fixedly connected to the inner wall of the placement groove 22, and the spacer 35 is located between two adjacent concave letter dies 39.

[0061] A first cover plate 36, a second cover plate 37, and a third cover plate 38 are fixedly connected to the push plate 40. Among them, the first cover plate 36 covers the first connection groove, the first support strip 25, and the first connection strip 28, the second cover plate 37 covers the rotating wheel 30, and the third cover plate 38 covers the second connection groove, the second support strip 26, and the second connection strip 29. The upper surfaces of the first cover plate 36, the second cover plate 37, and the third cover plate 38 are flush with the upper surface of the push plate 40.

[0062] The movement process of the present utility model is as follows:

[0063] 1. Selection and positioning of the concave letter die 39: First, the adjustment motor 5 is started and drives the first connection wheel 9 on its rotating shaft. The first connection wheel 9 drives the second connection wheel 10 on the rotating rod 7 to rotate through the toothed belt, and then drives the rotating rod 7 to rotate. Since the adjustment plate 6 is threadedly connected to the rotating rod 7 and slidably connected to the sliding rod 8, the adjustment plate 6 will move up or down along the axial direction parallel to the height direction of the support frame 2. The adjustment plate 6 supports the concave module group, so the concave module group will move vertically in the accommodation cavity. This precise vertical adjustment process aims to move the selected concave letter die 39 in each concave module group to a position aligned with the channel 12, so that these selected concave letter dies 39 are also located in the placement groove 22 at the same time. The width of the channel 12 ensures that only a single concave letter die 39 is selected each time.

[0064] 2. Lateral conveyance and clamping of the concave letter die 39: After all the selected concave letter dies 39 are located in the placement groove 22, the power motor 14 is started, and the driving wheel 19 on the power shaft drives the driven wheel 20 on the screw rod 15 to rotate through the transmission belt 21. The rotation of the screw rod 15 drives the connection block 16 and the push plate 40 fixedly connected thereto to move linearly along the length direction of the frame 1. At the same time, the slider 18 slides on the slide rail 17 to provide stable guidance for the push plate 40. When the push plate 40 starts to move and the stop block 33 is separated from the limit block 34, the elastic member 32 drives the first connection strip 28 to move towards the direction close to the rotating wheel 30. Through the rotation of the rotating wheel 30, the second connection strip 29 also moves towards the direction close to the rotating wheel 30, so that the first support strip 25 and the second support strip 26 move towards each other. At this time, the first support strip 25 and the second support strip 26 will tightly clamp the outer convex portions 24 at both ends of the concave letter die 39 and support the outer convex portions 24 to ensure that all the selected concave letter dies 39 are stably moved out of the channel 12 and are accurately conveyed to the stamping position.

[0065] 3. Release and reset of the concave die 39 after stamping: After the license plate stamping is completed, the push plate 40 moves toward the channel 12 under the drive of the power mechanism 13. When the placement slot 22 on the push plate 40 approaches the channel 12 again, the limit block 34 will interfere with the stop block 33, limiting the movement of the stop block 33. As the push plate 40 continues to move so that the placement slot 22 corresponds to the channel 12, the first connecting bar 28 will move relative to the stop block 33 and the limit block 34 away from the rotating wheel 30, driving the rotating wheel 30 to rotate and causing the second connecting bar 29 to also move away from the rotating wheel 30. Finally, the first support bar 25 and the second support bar 26 will separate from the outer protrusion 24 of the concave die 39 again, completing the release of the concave die 39 and facilitating the subsequent concave die 39 selection process.

[0066] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementation methods. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. An indentation die feeding device for a batch license plate making machine, comprising a frame (1) and an indentation module, characterized in that: A support frame (2) is connected to the frame (1) and arranged along the height direction of the frame itself. A plurality of partition plates (3) are arranged on the inner wall of the support frame (2). The plurality of partition plates (3) are arranged along the length direction of the support frame (2). The partition plates (3) divide the support frame (2) into a plurality of accommodation cavities. Each accommodation cavity has a set of concave die groups. An adjusting structure (4) for pushing the concave die groups to move along the height direction of the support frame (2) is arranged on the frame (1) or the support frame (2). A channel (12) is formed in the support frame (2). A push plate (40) for passing through the channel (12) is slidably connected to the frame (1) along the length direction of the frame itself. A placement groove (22) corresponding to the accommodation cavity is formed in the push plate (40). An elastic structure (23) for supporting a single concave character die (39) in each set of concave die groups is arranged on the placement groove (22).

2. The concave character die feeding device of a batch license plate making machine according to claim 1, characterized in that: The elastic structure (23) includes a convex portion (24), a first support bar (25), a second support bar (26), and an elastic component (27). A first connection groove and a second connection groove communicating with the placement groove (22) are formed in the push plate (40). The first connection groove and the second connection groove are arranged oppositely. The first support bar (25) is slidably connected in the first connection groove. The second support bar (26) is slidably connected in the second connection groove. The two convex portions (24) are respectively fixed to both ends of the concave character die (39). The first support bar (25) and the second support bar (26) slide along the first connection groove and the second connection groove respectively and support the convex portion (24). When the placement groove (22) corresponds to the channel (12), the elastic component (27) separates the first support bar (25) and the second support bar (26) from the convex portion (24). When the placement groove (22) is misaligned with the channel (12), the elastic component (27) makes the first support bar (25) and the second support bar (26) support the convex portion (24).

3. The concave character die feeding device of a batch license plate making machine according to claim 2, characterized in that: The elastic component (27) includes a first connection bar (28), a second connection bar (29), a rotating wheel (30), and an elastic mechanism (31). The rotating wheel (30) is rotatably connected to the push plate (40). The first connection bar (28) is fixedly connected to the first support bar (25) and meshes with the rotating wheel (30). The second connection bar (29) is fixedly connected to the second support bar (26) and meshes with the rotating wheel (30). The first connection bar (28) and the second connection bar (29) are respectively located on both sides of the rotating wheel (30). The elastic mechanism (31) drives the first connection bar (28) and / or the second connection bar (29) to move.

4. The concave character die feeding device of a batch license plate making machine according to claim 3, characterized in that: The elastic mechanism (31) includes an elastic member (32), a stop block (33), and a limit block (34). The limit block (34) is connected to the frame (1). The stop block (33) is fixed to the first connection bar (28) and / or the second connection bar (29). Both ends of the elastic member (32) are respectively connected to the push plate (40) and the stop block (33). The stop block (33) is used for abutting against the limit block (34).

5. The concave character mold feeding device of a batch license plate making machine according to any one of claims 1-4, characterized in that: The adjustment structure (4) includes an adjustment motor (5), an adjustment plate (6), a rotating rod (7) and a sliding rod (8). The sliding rod (8) is connected to the frame (1). The rotating rod (7) is rotatably connected to the frame (1). The axial direction of the sliding rod (8) and the axial direction of the rotating rod (7) are both parallel to the height direction of the support frame (2). The adjustment plate (6) supports the concave die group. The adjustment plate (6) is slidably connected to the sliding rod (8) and is threadedly connected to the rotating rod (7). The adjustment motor (5) drives the rotating rod (7) to rotate.

6. The concave character mold feeding device of a batch license plate making machine according to claim 5, characterized in that: A first connecting wheel (9) is connected to the rotating shaft of the adjustment motor (5). A second connecting wheel (10) is connected to the rotating rod (7). The first connecting wheel (9) drives the second connecting wheel (10) to rotate through a connecting belt (11).

7. The concave character mold feeding device of a batch license plate making machine according to any one of claims 1-4, characterized in that: A power mechanism (13) for driving the push plate (40) to move is provided on the frame (1).

8. The concave character die feeding device of a batch license plate making machine according to claim 7, characterized in that: The power mechanism (13) includes a power motor (14), a screw rod (15), a connecting block (16), a slide rail (17), and a slider (18). The screw rod (15) is rotatably connected to the frame (1). The connecting block (16) is threadedly connected to the screw rod (15) and is fixedly connected to the push plate (40). The axial direction of the screw rod (15) is parallel to the length direction of the frame (1). The slide rail (17) is fixed to the frame (1). The length direction of the slide rail (17) is parallel to the length direction of the frame (1). The slider (18) is fixed to the push plate (40) and is slidably connected to the slide rail (17).

9. The concave character die feeding device of a batch license plate making machine according to claim 8, characterized in that: A driving wheel (19) is fixedly connected to the power shaft of the power motor (14). A driven wheel (20) is fixedly connected to the screw rod (15). The driving wheel (19) is connected to the driven wheel (20) through a transmission belt (21).

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