A license plate feeding and discharging system and method

Abstract

The application relates to the technical field of license plate production, in particular to a license plate feeding and discharging system and method, wherein the system comprises a license plate feeding device, a feeding grabbing device, a conveying belt, a paper feeding device, a discharging grabbing device and a discharging platform; the license plate feeding device is provided with a license plate discharge port; the moving path of the feeding grabbing mechanism of the feeding grabbing device passes through the license plate discharge port and the receiving end of the conveying belt; the paper feeding device is provided with a paper discharge port; the discharging platform is provided with a placing station; the discharging grabbing device comprises a license plate grabbing unit and a paper grabbing unit; the moving path of the license plate grabbing unit passes through the output end of the conveying belt and the placing station of the discharging platform; and the moving path of the paper grabbing unit passes through the paper discharge port and the placing station of the discharging platform. The application can automatically realize the movement or storage of license plates and papers, the whole process does not need manual participation, the cost spent in long-term operation is reduced, and the efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of license plate production technology, and in particular to a license plate loading and unloading system and method. Background Technology

[0002] License plates are a vehicle's "identity card," serving as crucial information to distinguish it from other motor vehicles. With economic development, the number of vehicles per capita has increased rapidly, leading to a corresponding surge in demand for license plates.

[0003] During the processing of license plates, for license plates that have already been processed into plates, in some processing steps (such as laser marking of the license plates), the license plates need to be placed one by one at the processing equipment for processing. After the processing of the license plates is completed, the license plates are stacked and stored together. In order to avoid scratches between adjacent license plates when stacking them, which would affect the quality of the finished license plates, paper is usually placed between adjacent license plates to separate and protect them.

[0004] Currently, license plates and paper are usually moved and placed manually, which is inefficient and incurs high labor costs in the long run. Summary of the Invention

[0005] This invention discloses a license plate loading and unloading system and method to solve the technical problem that manual handling of license plates and paper in related technologies results in low efficiency and high labor costs in long-term operation.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, the present invention provides a license plate loading and unloading system, comprising a license plate loading device, a loading gripping device, a conveyor belt, a paper loading device, an unloading gripping device, and an unloading platform; the license plate loading device has a license plate outlet; the loading gripping device includes a loading gripping mechanism capable of gripping operations, the movement path of the loading gripping mechanism passing through the license plate outlet and the receiving end of the conveyor belt; the paper loading device has a paper outlet; the unloading platform has a placement station capable of placing a receiving box; the unloading gripping device includes a license plate gripping unit and a paper gripping unit, both capable of gripping operations, the movement path of the license plate gripping unit passing through the output end of the conveyor belt and the placement station of the unloading platform, and the movement path of the paper gripping unit passing through the paper outlet and the placement station of the unloading platform.

[0008] As an optional embodiment of the present invention, the license plate feeding device includes a feeding frame and a license plate feeding platform; the feeding frame has a license plate discharge port on one side, and the internal space of the feeding frame forms a license plate conveying channel facing the license plate discharge port; license plate limiting units are respectively provided on both sides of the license plate discharge port, and the two license plate limiting units can block the two side edges of the license plate, and there is a gap between the two license plate limiting units that allows the feeding gripping mechanism to enter; when the feeding frame is placed on the license plate feeding platform, the license plate in the license plate conveying channel can be conveyed to the license plate discharge port.

[0009] As an optional embodiment of the present invention, the license plate limiting unit includes a base and a blocking member. The blocking member has a cylindrical structure. The base is connected to the conveying channel, and the base and the blocking member are rotatably connected around the axis of the blocking member.

[0010] As an optional embodiment of the present invention, the license plate feeding device further includes a force-applying component, which is located within the conveying channel and can move towards the license plate outlet; the surface of the force-applying component facing the license plate outlet is an abutment surface, and the abutment surface has an opening; the feeding gripping mechanism is provided with a first detection device; when the feeding gripping mechanism enters between the two limiting units, the detection path of the first detection device passes through the license plate outlet; when the feeding gripping mechanism extends between the two license plate limiting units and the force-applying component moves to the license plate outlet, the detection path of the first detection device passes through the opening.

[0011] As an optional embodiment of the present invention, the receiving end of the conveyor belt is provided with a second detection device; the output end of the conveyor belt is provided with a blocking member, a third detection device and a stop member in sequence along the conveying direction of the conveyor belt, the third detection device is signal connected to the blocking member, the blocking member has a blocking part, the blocking part is movable and can block the license plate on the conveyor belt.

[0012] As an optional embodiment of the present invention, the paper feeding device includes a paper feeding platform, a lifting unit and a fourth detection device; the paper feeding platform is provided with a placement groove, and the top opening of the placement groove serves as the paper discharge port;

[0013] The lifting unit has a lifting platform located in the placement slot; the fourth detection device is signal-connected to the lifting unit, and the detection path of the fourth detection device passes through the paper outlet.

[0014] As an optional embodiment of the present invention, paper limiting units are respectively provided on both sides of the paper discharge port. The two paper limiting units can block the two side edges of the paper, and there is a gap between the two paper limiting units that allows the paper gripping unit to enter.

[0015] The paper limiting unit includes a rotating rod and a contact member. One end of the rotating rod is rotatably connected to the paper feeding platform, and the other ends of the two rotating rods are respectively connected to the two ends of the contact member so that the contact member can rotate to the paper outlet. The contact member has a rotating surface that contacts the paper, and the diameter of the middle part of the rotating surface is larger than the diameter of the two ends.

[0016] As an optional embodiment of the present invention, the output end of the conveyor belt and the paper outlet are arranged side by side; the feeding gripping device includes a feeding moving mechanism and a feeding gripping mechanism, the moving end of the moving mechanism being connected to the feeding gripping mechanism; the feeding gripping mechanism includes a connecting seat, a license plate gripping unit, and a paper gripping unit; the license plate gripping unit and the paper gripping unit are disposed on the connecting seat, and the relative positions of the license plate gripping unit and the paper gripping unit are adapted to the relative positions of the output end of the conveyor belt and the paper outlet; in the moving path of the feeding gripping mechanism, the license plate gripping unit and the paper gripping unit pass sequentially through the placement station of the feeding platform.

[0017] As an optional embodiment of the present invention, the unloading platform includes a platform body, a clamping unit, and a fifth detection device; the platform body has the placement station; the clamping unit and the fifth detection device are disposed on the platform body, the clamping unit can clamp the receiving box at the placement station, and the fifth detection device can detect whether a receiving box is in place at the placement station.

[0018] Secondly, the present invention provides a license plate loading and unloading method, applied to a license plate loading and unloading system as described in any of the above embodiments, wherein the license plate loading and unloading system further includes a main control device, a first detection device, a second detection device, a third detection device, a fourth detection device, and a fifth detection device. The first detection device is used to detect whether there is a license plate at the license plate outlet; the second detection device is used to detect whether there is a license plate at the receiving end of the conveyor belt; the third detection device is used to detect whether there is a license plate at the output end of the conveyor belt; the fourth detection device is used to detect whether there is paper at the paper outlet; and the fifth detection device is used to detect whether there is a receiving box at the placement station. The main control device is signal-connected to the first detection device, the second detection device, the third detection device, the fourth detection device, and the fifth detection device, respectively.

[0019] Including the following steps:

[0020] The license plate feeding device outputs a license plate to the license plate outlet and detects it through the first detection device. When there is a license plate at the license plate outlet, the first detection device sends a first signal to the main control device. When the main control device receives the first signal, the feeding gripping device is activated, the feeding gripping mechanism grabs the license plate at the outlet and brings the license plate to the receiving end of the conveyor belt.

[0021] When a license plate is detected by the second detection device, the second detection device sends a second signal to the main control device. When the main control device receives the second signal, the conveyor belt starts and sequentially carries the license plate to the processing station of the processing equipment and the output end of the conveyor belt.

[0022] The system utilizes the third, fourth, and fifth detection devices. When a license plate is present at the output end of the conveyor belt, the third detection device sends a third signal to the main control device. When paper is present at the paper outlet, the fourth detection device sends a fourth signal to the main control device. When paper is present at the paper outlet and a receiving box is present at the placement station, the fifth detection device sends a fifth signal to the main control device. When the main control device simultaneously receives the third, fourth, and fifth signals, the feeding gripping device activates. The license plate gripping unit grips the license plate at the output end of the conveyor belt and carries it to the receiving box. The paper gripping unit grips the paper at the paper outlet and, after the license plate is carried to the receiving box, carries the paper to the receiving box and covers the license plate.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. The present invention provides a license plate loading and unloading system, which, through the cooperation of a license plate loading device, a loading gripping device, a conveyor belt, a paper loading device, an unloading gripping device and an unloading platform, can automatically move or store license plates and paper. The whole process does not require manual intervention, which reduces the cost of long-term operation and improves efficiency.

[0025] 2. The license plate loading and unloading method provided by this invention can automatically move or store license plates and paper through various steps. The entire process requires no manual intervention, reducing costs incurred during long-term operations and improving efficiency. Simultaneously, the progress of the license plate and paper conveying and storage in the system can be obtained in a timely manner through detection devices, facilitating monitoring of the operation process. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the license plate loading and unloading system from a first-person perspective in Embodiment 1 of the present invention.

[0027] Figure 2 This is a schematic diagram of the license plate loading and unloading system from a second perspective in Embodiment 1 of the present invention.

[0028] Figure 3 This is a schematic diagram of the first example of the license plate feeding device in the second perspective of Embodiment 1 of the present invention.

[0029] Figure 4 This is a schematic diagram of the first example force-applying component of the license plate feeding device in the second perspective of Embodiment 1 of the present invention.

[0030] Figure 5 This is a schematic diagram of the second example of the license plate feeding device in the second perspective of Embodiment 1 of the present invention.

[0031] Figure 6 This is a top-view schematic diagram of the feeding frame in Embodiment 1 of the present invention.

[0032] Figure 7 for Figure 6 Detailed view of point A.

[0033] Figure 8 This is a schematic diagram of the conveyor belt structure from a second perspective in Embodiment 1 of the present invention.

[0034] Figure 9 This is a schematic diagram of the material gripping device from the first perspective in Embodiment 1 of the present invention.

[0035] Figure 10 This is a schematic diagram of the paper feeding device from a first-view perspective in Embodiment 1 of the present invention.

[0036] Figure 11 This is a structural detail view of the paper outlet side of the paper feeding device in Embodiment 1 of the present invention.

[0037] Figure 12 This is a schematic diagram of the feeding and gripping mechanism in Embodiment 1 of the present invention.

[0038] Figure 13 This is a schematic diagram of the material feeding and gripping mechanism in Embodiment 1 of the present invention.

[0039] Figure 14 This is a schematic diagram of the fit between the straw and the connecting seat in Embodiment 1 of the present invention.

[0040] Figure 15 This is a schematic diagram of the material feeding platform in Embodiment 1 of the present invention.

[0041] In the diagram, the markings are as follows: 1-License plate feeding device; 11-Feeding frame; 111-License plate outlet; 112-Baffle; 113-Base plate; 12-License plate limiting unit; 121-Blocking component; 1211-Arc-shaped surface; 122-Seat; 13-License plate feeding platform; 14-Force application component; 141-Abutting surface; 142-Opening; 2-Feeding gripping device; 21-First detection equipment; 3-Conveyor belt; 31-Second detection equipment; 32-Blocking component; 33-Third detection equipment; 34-Stop component; 4-Paper feeding device; 41-Paper feeding platform; 411-Placement slot; 412-Paper outlet; 42-Paper limiting unit; 421-Contact element; 422-Rotating rod; 431-Lifting platform; 44-Fourth inspection equipment; 5-Discharge gripping device; 51-License plate gripping unit; 52-Paper gripping unit; 6-Discharge platform; 61-Platform body; 611-Placement station; 62-Clamping unit; 63-Fifth inspection equipment; 64-Receiving box; 7-License plate; 8-Paper; 91-Connecting seat; 92-Suction tube; 93-Flexible suction cup; 94-Elastic element; 10-Processing equipment. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings.

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] Throughout this specification, references to "one or more embodiments," "one embodiment," "embodiment," "an example," or "example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of the invention. Therefore, the phrases "one or more embodiments," "one embodiment," "an example," "an example," or "example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. Moreover, those skilled in the art will understand that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0045] In the description of the embodiments, "several", "more than", and "a number" represent at least two. It can be any number, such as two, three, four, five, six, seven, eight, nine, or even more than nine.

[0046] It should be noted that the license plate mentioned in the embodiments can be a finished product or a semi-finished product that has been processed into a plate.

[0047] Example 1

[0048] This invention provides a license plate loading and unloading system, such as... Figure 1-15 As shown, it includes a license plate feeding device 1, a feeding gripping device 2, a conveyor belt 3, a paper feeding device 4, a discharging gripping device 5, and a discharging platform 6.

[0049] The license plate feeding device 1 can be filled with multiple license plates 7 produced in the previous processing step, or the license plate feeding device 1 can be directly connected to the output end of the previous processing step, thereby enabling the license plate feeding device 1 to provide the license plates 7 required for the production of this system to the feeding grabbing device 2; the license plate feeding device 1 has a license plate discharge port 111, and the license plates 7 provided by the license plate feeding device 1 can be taken out from the license plate discharge port 111.

[0050] The feeding and gripping device 2 includes a feeding and gripping mechanism capable of gripping the license plate 7. The feeding and gripping mechanism is movable, and its movement path passes through the license plate outlet 111 and the receiving end of the conveyor belt 3.

[0051] The conveyor belt 3 passes through the processing station of the processing equipment 10. The license plate 7 placed at the receiving end of the conveyor belt 3 can be carried by the conveyor belt 3 to the processing station of the processing equipment 10 for processing. After the processing of the license plate 7 is completed, the license plate 7 is transported to the output end of the conveyor belt 3.

[0052] The paper feeding device 4 has a paper discharge port 412, and the paper 8 placed in the paper feeding device 4 can be taken out from the paper discharge port 412.

[0053] The unloading platform 6 has a placement station 611 that can hold the receiving box 64, wherein the receiving box 64 is used to hold the processed license plate 7.

[0054] The feeding and gripping device 5 includes a license plate gripping unit 51 capable of gripping license plates 7 and a paper gripping unit 52 capable of gripping paper 8. The license plate gripping unit 51 and the paper gripping unit 52 are movable, and the movement path of the license plate gripping unit 51 passes through the output end of the conveyor belt 3 and the placement station 611 of the feeding platform 6, and the movement path of the paper gripping unit 52 passes through the paper discharge port 412 and the placement station 611 of the feeding platform 6.

[0055] Therefore, when the license plate 7 needs to be processed, the license plate feeding device 1 provides the license plate 7, the paper feeding device 4 provides the paper 8, and the empty receiving box 64 is placed at the placement station 611 of the unloading platform 6; the feeding gripping mechanism of the feeding gripping device 2 grips the license plate 7 from the license plate outlet 111 of the license plate feeding device 1 and carries the license plate 7 to the receiving end of the conveyor belt 3 for placement; the conveyor belt 3 carries the license plate 7 from the receiving end to the processing station of the processing equipment 10 for processing, and after the processing of the license plate 7 is completed, it transports the license plate 7 to the output end of the conveyor belt 3; the unloading gripping device 5 grips the license plate. Unit 51 grabs license plate 7 from the output end of conveyor belt 3 and carries license plate 7 to the placement station 611 of unloading platform 6 and puts it into receiving box 64. Meanwhile, paper grabbing unit 52 of unloading grabbing device 5 grabs paper 8 from paper outlet 412 of paper feeding device 4 and carries paper 8 to the placement station 611 of unloading platform 6 after a single license plate 7 is placed into receiving box 64 and places it on the single license plate 7 in receiving box 64. This cycle continues until all license plates 7 have been processed and placed into receiving box 64 for stacking and storage. At this time, the required paper 8 is placed between adjacent license plates 7 in receiving box 64.

[0056] With the cooperation of the license plate feeding device 1, the feeding gripping device 2, the conveyor belt 3, the paper feeding device 4, the unloading gripping device 5, and the unloading platform 6, the license plate 7 and paper 8 can be moved or stored automatically. The whole process does not require manual intervention, which reduces the cost of long-term operation and improves efficiency.

[0057] For the license plate feeding device 1, in one or more embodiments, the license plate feeding device 1 includes a feeding frame 11 and a license plate feeding platform 13; wherein, as Figure 3 , Figure 4 and Figure 6 As shown, a license plate outlet 111 is opened on one side of the loading frame 11. The internal space of the loading frame 11 is used to place multiple license plates 7 produced in the previous processing step. The multiple license plates 7 are stacked together, and the overlapping direction is towards the license plate outlet 111. Before the license plates 7 are processed by this system, the loading frame 11 serves as a container for storing the license plates 7 in the previous processing step.

[0058] The feeding frame 11 has a base plate 113 and at least two baffles 112. The two baffles 112 are respectively arranged on both sides of the base plate 113 in a "U" shape. The base plate 113 and the two baffles 112 form the internal space of the feeding frame 11. The opening 142 on the side of the feeding frame 11 without baffles 112 serves as the license plate outlet 111.

[0059] When it is necessary to process the license plate 7, the loading frame 11 is placed on the license plate loading platform 13. At this time, the internal space of the loading frame 11 forms a license plate conveying channel facing the license plate outlet 111. The position of the license plate outlet 111 is matched with the preset gripping point of the loading and gripping mechanism. The license plate 7 in the license plate conveying channel can move synchronously under the action of external force and be conveyed to the license plate outlet 111 in sequence, and then gripped by the loading and gripping mechanism.

[0060] Specifically, regarding the method by which license plates 7 within the loading frame 11 can be sequentially output from the license plate outlet 111 of the loading frame 11 under the action of external force:

[0061] In one or more examples, such as Figure 3 As shown, the license plate loading platform 13 can have an inclined support surface, and the loading frame 11 can be placed on the inclined support surface of the license plate 7. At this time, the loading frame 11 is inclined under the support of the inclined support surface, and the license plate outlet 111 is at the bottom of the loading frame 11. At this time, multiple license plates 7 in the loading frame 11 can slide down or have a downward trend under the influence of gravity. Thus, after the first license plate 7 slides down to the license plate outlet 111 and is picked up by the loading and gripping mechanism, the license plate outlet 111 is empty, and the next license plate 7 can automatically slide down to the license plate outlet 111 under the influence of gravity, until all license plates 7 have slid down to the license plate outlet 111 and been picked up by the loading and gripping mechanism.

[0062] Thus, through the cooperation of the license plate loading platform 13 and the loading frame 11, the license plates 7 can automatically slide down one by one to the license plate outlet 111 under the influence of gravity, so that the loading and gripping mechanism can pick them up. This achieves automatic loading of the license plates 7, and the loading process does not require manual intervention, reducing the cost incurred in long-term operation. In addition, this loading process does not require the addition of other drive devices, thus saving the cost of purchasing corresponding drive devices and reducing the power consumption of the entire processing process.

[0063] The license plate 7 in the loading frame 11 can slide down by its own weight alone, or it can slide down with the help of other components.

[0064] Specifically, such as Figure 3-4 As shown, the license plate feeding device 1 also includes a force-applying component 14. The weight of the force-applying component 14 is much greater than that of the license plate 7. The force-applying component 14 can be placed in the conveying channel. When the feeding frame 11 is at a suitable tilt angle, the force-applying component 14 can move forward (i.e. slide down) toward the license plate outlet 111 and push all the license plates 7 in the feeding frame 11 to slide down, thereby ensuring that all the license plates 7 slide down synchronously and maintain close contact during the process of sliding down to the license plate outlet 111, so as to avoid the adjacent license plates 7 from losing contact and tipping over due to the difference in sliding speed.

[0065] In one or more other examples, such as Figure 5 As shown, the license plate loading platform 13 may be equipped with a transmission belt, and the transmission belt may be equipped with a force-applying component 14. The force-applying component 14 moves under the drive of the transmission belt, for example, the force-applying component 14 may be fixed to the transmission belt. When the loading frame 11 is placed on the license plate loading platform 13, the force-applying component 14 can abut against the rear of all the license plates 7 and push all the license plates 7 in the loading frame 11 forward in the overlapping direction. Thus, when the previous license plate 7 moves to the license plate outlet 111 and is picked up, the next license plate 7 can automatically move to the license plate outlet 111 under the push of the force-applying component 14 until all the license plates 7 are picked up by the loading and gripping mechanism.

[0066] Thus, through the cooperation of the feeding frame 11 and the force-applying component 14, license plates 7 can be automatically and sequentially conveyed to the license plate outlet 111 for the feeding and gripping mechanism to pick up, realizing automatic feeding of license plates 7. The feeding process does not require manual intervention, reducing the cost incurred in long-term operation. In addition, it can be understood that the transmission speed of the conveyor belt can be adapted according to the speed at which the feeding and gripping mechanism picks up the license plates 7, so that the license plate outlet 111 always has license plates 7 when the feeding and gripping mechanism picks up the license plates 7, thereby eliminating the waiting time that may exist when the feeding and gripping mechanism picks up the license plates 7, thereby improving the efficiency of the operation process.

[0067] Among them, such as Figure 6 As shown, two license plate limiting units 12 can be respectively provided on both sides of the license plate outlet 111. The gap between the two license plate limiting units 12 is smaller than the width of the license plate 7. When the license plate 7 at the front of the license plate conveying channel moves to the license plate outlet 111, the two license plate limiting units 12 can abut against the two side edges of the license plate 7 to block the two side edges of the license plate 7. Moreover, the gap between the two license plate limiting units 12 is adapted to the feeding gripping mechanism. The feeding gripping mechanism can enter between the two license plate limiting units 12 and grip the middle part of the license plate 7 at the front.

[0068] The aforementioned middle part refers to the area of ​​license plate 7 that does not touch the edge.

[0069] The middle part of the foremost license plate 7 is exposed in the gap between the two license plate limiting units 12. The feeding gripping device 2 can grip the middle part of the license plate 7 and apply a forward external force to the middle part of the license plate 7. At this time, the middle part of the license plate 7 is subjected to the forward external force applied by the feeding gripping mechanism, and the two side edges are subjected to the backward blocking force applied by the two license plate limiting units 12, causing the license plate 7 to undergo a certain degree of curvature bending deformation. At this time, the distance between the two side edges of the foremost license plate 7 decreases, allowing the license plate 7 to pass through the two license plate limiting units 12 and be taken out by the feeding gripping mechanism. Moreover, the other license plates 7, except for the foremost license plate 7, are not subjected to the external force applied by the feeding gripping mechanism, so it is difficult to generate enough deformation to pass through the two license plate limiting units 12. Therefore, they are still blocked by the two license plate limiting units 12, so that the feeding gripping mechanism can only take out one license plate 7 at a time. Once the first license plate 7 has moved to the license plate outlet 111 and been removed by the feeding and gripping device 2, the overlapping license plates 7 can continue to move toward the license plate outlet 111 so that the next license plate 7 can move to the license plate outlet 111.

[0070] Therefore, by cooperating with the feeding and gripping device 2 and the two license plate limiting units 12, multiple license plates 7 that are overlapping can be gripped, so that only one license plate 7 located at the license plate outlet 111 can be taken out by the feeding and gripping mechanism each time, thereby automatically outputting the license plates 7 one by one.

[0071] For the license plate limiting unit 12, in one or more embodiments, such as Figure 7 As shown, the license plate limiting unit 12 includes a base 122 and a blocking member 121. The blocking member 121 has a cylindrical structure. The base 122 is connected to the license plate conveying channel. The base 122 and the blocking member 121 are rotatably connected around the axis of the blocking member 121.

[0072] Based on the scheme where the blocking member 121 is a cylindrical structure, specifically, the blocking members 121 of the two license plate limiting units 12 are parallel to each other, the distance between the axes of the two blocking members 121 is equal to or greater than the distance between the license plates 7, and the shortest distance between the circumferential surfaces of the two blocking members 121 is less than the distance between the license plates 7. When the two sides of the license plate 7 abut against the two blocking members 121 at a suitable position, the two sides of the license plate 7 naturally contact the inner part of the arc surface 1211 on the blocking member 121.

[0073] At this time, by setting the arc surface 1211, the blocking part 121 is prevented from being in close contact with the edge of the foremost license plate 7. This ensures that when the foremost license plate 7 is grasped by the feeding and gripping mechanism and undergoes a certain degree of bending deformation, there is space between the arc surface 1211 and the foremost license plate 7 for the license plate 7 to bend and deform. This ensures that the edge of the license plate 7 can deform appropriately with the whole license plate 7, avoiding excessive obstruction to the deformation of the edge of the foremost license plate 7 caused by the clamping of the arc surface 1211 and the next license plate 7. This would ultimately cause the edge of the foremost license plate 7 to undergo plastic deformation such as curling after being taken out, which would have an adverse effect on the forming quality of the license plate 7.

[0074] Furthermore, the rotatable connection between the seat 122 and the blocking member 121 ensures that the friction between the license plate 7 and the blocking member 121 is rolling friction during the process of removing the license plate 7 from between the blocking members 121. This reduces the frictional force between the license plate 7 and the blocking member 121, thereby reducing the wear on the edge of the license plate 7, improving the forming quality of the license plate 7, and facilitating the removal of the license plate 7.

[0075] In a preferred embodiment, the license plate limiting unit 12 is inserted 2-3mm into the edge of the license plate 7. At this time, the license plate 7 can be effectively blocked by the license plate limiting unit 12, and the bending deformation of the license plate 7 is within the range of elastic deformation when the feeding gripping device 2 takes out the license plate 7. After the license plate 7 is taken out, it can automatically return to its original position after bending deformation.

[0076] For the force-applying element 14, in one or more embodiments, such as Figure 4 As shown, the surface of the force-applying member 14 facing the license plate outlet 111 is the contact surface 141, and the contact surface 141 has an opening 142.

[0077] Based on this, such as Figure 12 As shown, the feeding and gripping mechanism is equipped with a first detection device 21.

[0078] At this time, the first detection device 21 can be an infrared sensor, and the infrared path emitted by the infrared sensor is the detection path of the detection device.

[0079] When the feeding and gripping mechanism extends between the two license plate limiting units 12, the detection path of the first detection device 21 passes through the license plate outlet 111. When the license plate 7 is in the license plate outlet 111, the license plate 7 can block the detection path of the first detection device 21. Thus, the first detection device 21 can detect whether there is a license plate 7 in the license plate outlet 111 based on whether there is an obstruction. If there is no license plate 7 in the license plate outlet 111, the feeding and gripping device 2 will stop, reducing the operating cost of the relevant mechanism. If there is a license plate 7 in the license plate outlet 111, the feeding and gripping mechanism will continue to grip the license plates 7 in the license plate outlet 111 one by one.

[0080] When the force-applying component 14 moves to the license plate discharge port 111, the license plate 7 is completely removed. At this time, when the feeding gripping mechanism extends between the two license plate limiting units 12, the detection path of the first detection device 21 can pass through the opening 142, thereby reducing the interference of the contact surface 141 on the detection result.

[0081] In one or more embodiments, the feeding and gripping device 2 includes a feeding moving mechanism and a feeding gripping mechanism. The feeding gripping mechanism is capable of gripping the license plate 7. The moving end of the feeding moving mechanism is connected to the feeding gripping mechanism, and the moving end of the feeding moving mechanism drives the entire feeding gripping mechanism to move.

[0082] The feeding and moving mechanism can be a drive device that can drive the feeding and gripping mechanism to move along a simple path, such as a cylinder that can drive the feeding and gripping mechanism to move along a straight path; or it can be a drive device that can move along a complex path, such as a robotic arm.

[0083] Among them, such as Figure 1-2 As shown, the loading and moving mechanism can be a six-axis robotic arm, ensuring that the loading and moving mechanism has a high degree of freedom.

[0084] For the feeding and gripping mechanism, the feeding and gripping device 2 can grip the middle part of the license plate 7 by clamping, magnetic attraction, or negative pressure adsorption. Among them, negative pressure adsorption is preferred, which facilitates the picking and placing of the license plate 7, and is less likely to damage the license plate 7, thereby improving the forming quality of the license plate 7.

[0085] Specifically, such as Figure 12 and Figure 14 As shown, the feeding and gripping mechanism includes a connecting seat 91 and multiple suction tubes 92. The connecting seat 91 is slidably connected to the multiple suction tubes 92. The sliding direction of the suction tubes 92 is parallel to the axis of the suction tubes 92. An elastic element 94 is provided between the suction tubes 92 and the connecting seat 91. Under the force of the elastic element 94, the suction end of the suction tube 92 tends to move away from the connecting seat 91.

[0086] The suction ends of multiple straws 92 are equipped with flexible suction cups 93. This improves the suction end of the straws 92's ability to adhere to the surface of the object being grasped.

[0087] By sliding the straw 92 relative to the connecting seat 91, the straw 92 can adapt to the error when the feeding and gripping mechanism approaches the object being gripped (i.e., license plate 7), ensuring that the suction end of the straw 92 can abut against the surface of the object being gripped to achieve adsorption, and without applying excessive squeezing force to the object being gripped, thus reducing the possibility of damage to the object being gripped.

[0088] At this time, as Figure 12 As shown, the first detection device 21 can be set in the middle of the feeding and gripping mechanism, and the detection only begins when the feeding and gripping mechanism moves to the license plate outlet 111.

[0089] In addition, the feeding and gripping mechanism contacts the license plate 7 through the flexible suction cup 93. When the license plate 7 undergoes bending deformation, the flexible suction cup 93 can maintain contact with the license plate 7 and tilt synchronously with the deformation of the license plate 7. This ensures that the bending deformation of the license plate 7 is not concentrated at the edge of the license plate 7, but is bent and deformed by the entire license plate 7, reducing the deformation range required at the edge of the license plate 7, further reducing the possibility of plastic deformation at the edge of the license plate 7, and thus ensuring the forming quality of the license plate 7 during the gripping process.

[0090] At this time, the feeding and gripping mechanism preferably has four suction tubes 92, which are arranged in a rectangular array. Through the cooperation of multiple suction tubes 92, the plate surface of the license plate 7 can be adsorbed at multiple points, which improves the gripping force and stability of the feeding and gripping mechanism on the license plate 7 and reduces the possibility of the license plate 7 shifting or falling off during the gripping process.

[0091] For conveyor belt 3, it can be a relatively wide belt, but it is preferred to have two belts spaced apart.

[0092] In one or more embodiments, such as Figure 8 As shown, the receiving end of the conveyor belt 3 is equipped with a second detection device 31, and the detection path of the second detection device 31 passes through the receiving end of the conveyor belt 3. When the license plate 7 falls on the receiving end of the conveyor belt 3, the license plate 7 is blocked in the detection path of the second detection device 31. At this time, the second detection device 31 can send a signal that the receiving end of the conveyor belt 3 has received the license plate 7 (i.e., the second signal), which causes the conveyor belt 3 to transport the license plate 7 at the receiving end of the conveyor belt 3, and bring the license plate 7 to the processing station of the processing equipment 10 and the output end of the conveyor belt 3 in sequence, thereby completing the processing and output of the license plate 7.

[0093] At this time, the second detection device 31 can also be an infrared sensor. The second detection device 31 can be located between the two belts, and the detection path of the infrared sensor passes upward through the receiving end of the conveyor belt 3.

[0094] In one or more embodiments, such as Figure 8 As shown, the output end of the conveyor belt 3 is provided with a blocking member 121, a third detection device 33 and a stop member 34 in sequence along the conveying direction of the conveyor belt 3. The third detection device 33 is signal connected to the blocking member 121. The blocking member 121 has a blocking part that can move and block the license plate 7 on the conveyor belt 3. There is a gap between the blocking part and the stop member 34 that is adapted to the length of the license plate 7.

[0095] The stopper 34 is used to block the license plate 7 that slides to the output end of the conveyor belt 3, so that the license plate 7 can stop at a roughly the same position so that the license plate grabbing unit 51 can grab it.

[0096] The detection path of the second detection device 31 passes through the output end of the conveyor belt 3. When the license plate 7 moves to the output end of the conveyor belt 3, the license plate 7 blocks the detection path of the third detection device 33. At this time, the third detection device 33 can send a signal that the output end of the conveyor belt 3 has received the license plate 7 (i.e., the third signal), which allows the blocking part to move to the conveyor belt 3 and prevent subsequent license plates 7 from being output to the output end. At this time, there is only a single license plate 7 in front of the stop member 34. When the blocking member 121 receives a signal that there is no license plate 7 at the output end, the blocking part can reset and no longer block subsequent license plates 7, allowing subsequent license plates 7 to be output to the output end.

[0097] With the cooperation of the third detection device 33 and the blocking component 121, when there is a license plate 7 at the output end of the conveyor belt 3, other license plates 7 can be prevented from entering the output station. This avoids the situation where the output license plates 7 accumulate at the output end of the conveyor belt 3 and interfere with the gripping of the license plate grabbing unit 51, so that subsequent processes can proceed stably.

[0098] The third detection device 33 can also be an infrared sensor. The third detection device 33 can be located between the two belts, with the detection path of the infrared sensor passing upward through the output end of the conveyor belt 3.

[0099] The blocking member 121 can be a telescopic rod located between the two belts, and the free end of the telescopic rod constitutes the aforementioned blocking part.

[0100] The stop member 34 can be a rigid structure, but is preferably a flexible structure, thereby reducing the impact damage caused by the license plate 7 hitting the stop member 34.

[0101] Based on this, the number of times the second and third signals are received can be compared. When the number of times the second and third signals are received is the same, it can be determined that all license plates 7 on the conveyor belt 3 have been processed and output to the output end of the conveyor belt 3. At this time, the conveyor belt 3 can be stopped to reduce the operating costs of related mechanisms.

[0102] For the paper feeding device 4, in one or more embodiments, such as Figure 10 As shown, the paper feeding device 4 includes a paper feeding platform 41, a lifting unit, and a fourth detection device 44. The paper feeding platform 41 is provided with a placement slot 411, which is used to place multiple sheets of paper 8 stacked together. When arranging the license plate 7 production system, the top opening of the placement slot 411 is aligned with the area to be gripped by the paper gripping unit 52 (the area where the paper gripping unit 52 can perform gripping operations), so that the paper gripping unit 52 can move downward and grip the top sheet of paper 8 from the top opening of the placement slot 411. At this time, the opening of the placement slot 411 is the paper discharge port 412.

[0103] The lifting unit has a lifting platform 431, and the lifting platform 431 is located in the placement slot 411, such as Figure 1 As shown, when multiple sheets of paper 8 are placed in the placement slot 411, they are placed on the lifting platform 431 and can rise and fall synchronously with the lifting platform 431. The fourth detection device 44 is signal-connected to the lifting unit, and the detection path of the detection device passes through the paper outlet 412. The fourth detection device 44 can detect whether there is a sheet of paper 8 at the paper outlet 412 by obtaining whether there is an obstruction on the detection path. If there is no sheet of paper 8 at the paper outlet 412, the lifting platform 431 is raised until the top of the multiple sheets of paper 8 on the lifting platform 431 moves to the paper outlet 412 so that the paper gripping unit 52 can grip it. At this time, the fourth detection device 44 detects that there is a sheet of paper 8 at the paper outlet 412, and the lifting platform 431 stops rising.

[0104] Therefore, through the cooperation of the lifting platform 431 and the fourth detection device 44, the paper 8 at the paper discharge port 412 can be automatically replenished after it is gripped away, reducing the number of times manual inspection and replenishment are required, thus improving operational efficiency and reducing labor costs during long-term operations. Simultaneously, a large number of overlapping sheets of paper 8 can be placed on the placement platform, further reducing the frequency of replenishment and thus improving operational efficiency.

[0105] In one or more embodiments, the fourth detection device 44 may be an infrared light emitter and an infrared light receiver disposed on both sides of the paper discharge port 412. The infrared light emitter and the infrared light receiver cooperate with each other to form an infrared light beam sensor. Both the infrared light emitter and the infrared light receiver are connected to the paper feeding table 41. The infrared light receiver receives the infrared light emitted by the infrared light emitter, and the path of the infrared light emitted by the infrared light emitter passes through the paper discharge port 412. When the paper 8 moves to the paper discharge port 412, it blocks the infrared light emitted by the infrared light emitter, and the infrared light receiver cannot receive the infrared light. Therefore, it is determined that there is paper 8 at the paper discharge port 412, and the lifting platform 431 stops rising. When the paper 8 blocked by the infrared light emitter is removed, the infrared light receiver receives the infrared light, and it is determined that there is no paper 8 at the paper discharge port 412. The lifting platform 431 then rises.

[0106] At this time, the detection path of the fourth detection device 44 is the infrared light path emitted by the infrared light emitter.

[0107] More specifically, such as Figure 10-11 As shown, paper limiting units 42 are respectively provided on both sides of the paper discharge port 412. The two paper limiting units 42 can block the two side edges of the paper 8, and there is a gap between the two paper limiting units 42 that allows the paper gripping unit 52 to enter.

[0108] At this time, the free end of the paper limiting unit 42 can apply downward pressure to both sides of the paper 8. When the paper gripping unit 52 grips the topmost paper 8, the middle part of the topmost paper 8 is subjected to an upward external force, and the edge part is subjected to a downward pressure, causing the edge of the topmost paper 8 to slide out from between the paper limiting unit 42 and the next paper 8, so that the topmost paper 8 can be taken out by the paper gripping unit 52. Moreover, the other papers 8, except for the topmost paper 8, are not subjected to the external force applied by the paper gripping unit 52, and the adsorption force between adjacent papers 8 is small. Therefore, they are difficult to slide out from between the paper limiting unit 42 and the next paper 8, and therefore are difficult to be taken out by the topmost paper 8.

[0109] Therefore, by setting the paper limiting unit 42, multiple overlapping sheets of paper 8 can be restricted, so that only one sheet of paper 8 can be taken out by the paper gripping unit 52 at a time, thereby reducing the possibility of excess sheets of paper 8 being taken away and reducing unnecessary waste.

[0110] For the paper limiting unit 42, in one or more embodiments, such as Figure 11As shown, the paper limiting unit 42 includes a rotating rod 422 and a contact member 421. The contact member 421 is located at the free end of the paper limiting unit 42 and is used to contact the paper 8. One end of the rotating rod 422 is rotatably connected to the paper feeding table 41, and the other ends of the two rotating rods 422 are respectively connected to the two ends of the contact member 421. Thus, the free end of the paper limiting unit 42 can be rotated away from the paper outlet 412 to avoid interfering with the process of the paper 8 being placed into the placement slot 411 from the paper outlet 412. After the paper 8 is placed into the placement slot 411, the contact member 421 can be moved to the paper outlet 412 by rotation to continue to limit the paper 8.

[0111] The contact element 421 is made of a high-density material and has a large weight, so that the free end of the paper limiting unit 42 has a sufficiently large weight to ensure that the paper limiting unit 42 can naturally abut against the edge of the topmost paper 8 under the action of gravity, and can apply sufficient pressure to the paper 8.

[0112] The material constituting the contact element 421 can be a metal with a high density, such as iron or stainless steel.

[0113] The contact element 421 has a rotating surface that contacts the paper 8. By abutting against the outermost piece of paper 8 through the rotating surface, damage to the paper 8 can be reduced. It can be understood that a rotating surface refers to a surface formed by rotating a plane or spatial curve around an axis.

[0114] Preferably, the diameter of the middle part of the rotating surface is larger than the diameter of the two ends. In this case, the rotating surface of the contact 421 has a structure that is thicker in the middle and thinner at both ends. The contact 421 with this structure is more likely to have a greater weight. When the contact 421 comes into contact with the paper 8, the middle part of the rotating surface of the contact 421 first contacts the middle position of the edge of the paper 8. Under the pressure of the middle part of the rotating surface, the middle position of the edge of the overlapping part of the paper 8 is prone to collapse due to the concentrated force. At this time, the two sides of the edge of the paper 8 are slightly raised, making it difficult for the adjacent paper 8 to stick tightly together in the raised part, reducing the adsorption force between the adjacent paper 8 on the outside, thereby further reducing the possibility of excess paper 8 being carried away. In this case, the contact 421 can be a spindle-shaped cylinder.

[0115] In one or more embodiments, such as Figure 9As shown, the output end of the conveyor belt 3 and the paper outlet 412 are arranged side by side; the feeding gripping device 5 includes a feeding moving mechanism and a feeding gripping mechanism. The moving end of the moving mechanism is connected to the feeding gripping mechanism, and the moving end of the feeding moving mechanism drives the entire feeding gripping mechanism to move synchronously; the feeding gripping mechanism includes a connecting seat 91, a license plate gripping unit 51 and a paper gripping unit 52; wherein the license plate gripping unit 51 can pick up and put down the license plate 7, and the paper gripping unit 52 can pick up and put down the paper 8; the license plate gripping unit 51 and the paper gripping unit 52 are arranged on the connecting seat 91, and the relative positions of the license plate gripping unit 51 and the paper gripping unit 52 are adapted to the relative positions of the output end of the conveyor belt 3 and the paper outlet 412. In the moving path of the feeding gripping mechanism, the license plate gripping unit 51 and the paper gripping unit 52 pass through the placement station 611 of the feeding platform 6 in sequence.

[0116] Thus, the license plate gripping unit 51 and the paper gripping unit 52 can simultaneously grip the license plate 7 at the output end of the conveyor belt 3 and the paper 8 at the paper outlet 412. The gripped license plate 7 and paper 8 are moved synchronously by the feeding and moving mechanism. During the movement of the feeding and gripping mechanism along the moving path, the license plate gripping unit 51 and the paper gripping unit 52 pass through the placement station 611 respectively and alternately put the gripped license plate 7 and paper 8 into the receiving box 64. This is repeated so that the license plate 7 and paper 8 are stacked into the receiving box 64 one after another.

[0117] Thus, through the cooperation of the feeding and moving mechanism and the feeding and gripping mechanism, the license plate 7 and paper 8 can be gripped automatically at the same time, and the license plate 7 and paper 8 can be placed one by one. This allows the license plate 7 to be stacked and stored while paper 8 is placed between adjacent license plates 7, ensuring the quality of the finished product when storing the license plate 7. The whole process does not require manual intervention, reducing the cost of long-term operation and improving efficiency.

[0118] Understandably, this device can transport the license plate 7 and the paper 8 simultaneously using a single feeding and moving mechanism. Compared to setting two feeding and moving mechanisms to move the license plate 7 and the paper 8 separately, this device reduces the number of feeding and moving mechanisms, saving costs. At the same time, compared to using one feeding and moving mechanism to move the license plate 7 and the paper 8 separately in two separate movements, this device reduces the number of times the feeding and moving mechanism moves, improving efficiency.

[0119] The material feeding and moving mechanism can be a drive device that can drive the material feeding and gripping mechanism to move along a simple path, such as a cylinder that can drive the material feeding and gripping mechanism to move along a straight path; or it can be a drive device that can move along a complex path, such as a robotic arm.

[0120] Among them, such as Figure 1-2 As shown, the unloading and moving mechanism can be a six-axis robotic arm, ensuring that the unloading and moving mechanism has a high degree of freedom.

[0121] For the license plate gripping unit 51 and / or the paper gripping unit 52, the gripping method for the object to be gripped can be clamping, magnetic attraction, or negative pressure adsorption. Negative pressure adsorption is preferred, as it facilitates the picking and putting of the object to be gripped and is less likely to cause damage to the license plate 7 or the paper 8.

[0122] Specifically, such as Figure 13-14 As shown, both the license plate gripping unit 51 and the paper gripping unit 52 include multiple straws 92. The connecting seat 91 is slidably connected to the multiple straws 92. The sliding direction of the straws 92 is parallel to the axis of the straws 92. An elastic element 94 is provided between the straws 92 and the connecting seat 91. Under the force of the elastic element 94, the suction end of the straw 92 tends to move away from the connecting seat 91.

[0123] The suction ends of multiple straws 92 are equipped with flexible suction cups 93. This improves the suction end of the straws 92's ability to adhere to the surface of the object being grasped.

[0124] By sliding the straw 92 relative to the connecting seat 91, it can adapt to the error when the feeding and gripping mechanism approaches the object being gripped, ensuring that the suction end of the straw 92 can abut against the surface of the object being gripped to achieve adsorption, and will not apply excessive squeezing force to the object being gripped, thus reducing the possibility of damage to the object being gripped.

[0125] The number of suction tubes 92 in both the license plate gripping unit 51 and the paper gripping unit 52 is preferably four. The four suction tubes 92 are arranged in a rectangular array. Through the cooperation of multiple suction tubes 92, the license plate 7 and the paper 8 can be adsorbed at multiple points on the flat surface, which improves the gripping force and stability of the feeding gripping mechanism on the license plate 7 and the paper 8, and reduces the possibility of the license plate 7 and the paper 8 shifting or falling off during the gripping process.

[0126] For the unloading platform 6, in one or more embodiments, such as Figure 15 As shown, the unloading platform 6 includes a platform body 61, a clamping unit 62, and a fifth inspection device 63; wherein, the platform body 61 is adapted to the placement station 611 of the receiving box 64; the clamping unit 62 and the fifth inspection device 63 are disposed on the platform body 61.

[0127] When the receiving box 64 is placed at the placement station 611, the clamping unit 62 can clamp and fix the receiving box 64 at the placement station 611, thereby reducing or avoiding the displacement of the receiving box 64 when storing the license plate 7 or paper 8, which may result in the item not being placed into the receiving box 64 or being stored in the receiving box 64 in an inclined or vertical position, thereby improving the stability of the license plate 7 being stored in the receiving box 64.

[0128] The fifth detection device 63 can detect whether the receiving box 64 is in place at the placement station 611. "Receiving box 64 in place" means that the receiving box 64 is completely placed within the area of ​​the placement station 611. When the fifth detection device 63 detects that the receiving box 64 is in place at the placement station 611, it can send a signal indicating that it is in place (i.e., the fifth signal). When the fifth detection device 63 detects that the receiving box 64 is not in place at the placement station 611 (i.e., the receiving box 64 has shifted on the placement station 611 or is not placed on the placement station 611), it can send a signal indicating that it is not in place. Therefore, the fifth detection device 63 can be connected to other devices (such as the feeding and gripping mechanism or the entire license plate 7 production system) to control the opening or closing of other devices. When the fifth detection device 63 sends a positioning signal, other devices open and dispense the license plate 7. When the fifth detection device 63 sends a non-positioning signal, other devices close and stop dispensing the license plate 7 and paper 8.

[0129] In order to improve the fixing effect of the clamping unit 62 on the receiving box 64, it is preferable that the clamping unit 62 clamps both sides of the receiving box 64. Specifically, the clamping unit 62 includes at least two clamping members, which are respectively located on both sides of the placement station 611. The opposing sides of the two clamping members have clamping surfaces, and at least one of the two clamping members can move in a direction that moves closer or further away from each other. This makes the distance between the clamping surfaces of the two clamping members adjustable. By adjusting the distance between the two clamping members, both sides of the receiving box 64 can be clamped. During the clamping process, the two clamping surfaces are in contact with the two sides of the receiving box 64, thereby improving the fixing effect of the receiving box 64 and preventing the receiving box 64 from being tilted between the clamping members.

[0130] The fifth detection device 63 may include a sensor for detecting the presence of the receiving box 64, such as an infrared sensor or a pressure sensor. The sensor detects whether the edge of the receiving box 64 is aligned with the edge of the placement station 611, thereby determining whether the receiving box 64 is in place. Alternatively, it may include a switch. When the receiving box 64 is in the placement station 611, pressure is applied to the switch to open it.

[0131] Example 2

[0132] The present invention also provides a method for loading and unloading license plates, applicable to any of the license plate loading and unloading systems described in Embodiment 1. The license plate loading and unloading system further includes a main control device, and a first detection device 21, a second detection device 31, a third detection device 33, a fourth detection device 44, and a fifth detection device 63 as mentioned in Embodiment 1. The first detection device 21 is used to detect whether a license plate 7 is present at the license plate outlet 111; the second detection device 31 is used to detect whether a license plate 7 is present at the receiving end of the conveyor belt 3; the third detection device 33 is used to detect whether a license plate 7 is present at the output end of the conveyor belt 3; the fourth detection device 44 is used to detect whether paper 8 is present at the paper outlet 412; and the fifth detection device 63 is used to detect whether a receiving box 64 is present at the placement station 611. The main control device is signal-connected to the first detection device 21, the second detection device 31, the third detection device 33, the fourth detection device 44, and the fifth detection device 63, respectively.

[0133] Including the following steps:

[0134] S1. The license plate feeding device 1 outputs the license plate 7 to the license plate outlet 111 and is detected by the first detection device 21. When there is a license plate 7 at the license plate outlet 111, the first detection device 21 sends a first signal to the main control device. When the main control device receives the first signal, the feeding gripping device 2 is activated, and the feeding gripping mechanism grabs the license plate 7 at the outlet and brings the license plate 7 to the receiving end of the conveyor belt 3.

[0135] S2. The second detection device 31 performs the detection. When there is a license plate 7 at the receiving end of the conveyor belt 3, the second detection device 31 sends a second signal to the main control device. When the main control device receives the second signal, the conveyor belt 3 starts and brings the license plate 7 to the processing station of the processing equipment 10 and the output end of the conveyor belt 3 in sequence.

[0136] S3. The third detection device 33, the fourth detection device 44, and the fifth detection device 63 perform detection. When there is a license plate 7 at the output end of the conveyor belt 3, the third detection device 33 sends a third signal to the main control device. When there is paper 8 at the paper outlet 412, the fourth detection device 44 sends a fourth signal to the main control device. When there is paper 8 at the paper outlet 412 and a receiving box 64 at the placement station 611, the fifth detection device 63 sends a fifth signal to the main control device. When the main control device receives the third, fourth, and fifth signals simultaneously, the feeding gripping device 5 is activated. The license plate gripping unit 51 grips the license plate 7 at the output end of the conveyor belt 3 and carries the license plate 7 into the receiving box 64. The paper gripping unit 52 grips the paper 8 at the paper outlet 412 and, after the license plate 7 is carried into the receiving box 64, carries the paper 8 into the receiving box 64 and covers the license plate 7.

[0137] By performing the above steps, the license plate 7 and paper 8 can be moved or stored automatically without human intervention, reducing costs associated with long-term operations and improving efficiency. Simultaneously, the progress of the license plate 7 and paper 8 being conveyed and stored in the license plate loading and unloading system can be monitored in real time through the detection equipment, facilitating the monitoring of the operation process.

[0138] The specific steps by which the feeding and gripping mechanism grips the license plate 7 at the discharge port include:

[0139] S11, move the multiple license plates 7 that are overlapping in the license plate conveying channel toward the license plate outlet 111 until the two sides of the foremost license plate 7 abut against the two license plate limiting units 12 respectively.

[0140] S12, the feeding and gripping mechanism extends between the two license plate limiting units 12 and grips the middle part of the foremost license plate 7.

[0141] S13. The feeding and gripping mechanism moves the middle part of the foremost license plate 7 forward and then pauses for a preset time, so that the foremost license plate 7 remains in the target state. In the target state, the middle part of the license plate 7 protrudes forward, and the two sides of the license plate 7 still abut against the two license plate limiting units 12 respectively.

[0142] S14. The feeding and gripping mechanism drives the middle part of the foremost license plate 7 to continue moving forward, so that the foremost license plate 7 is released from between the two license plate limiting units 12. The feeding and gripping mechanism brings the released license plate 7 to the receiving end of the conveyor belt 3 and releases the released license plate 7.

[0143] Specifically, considering that the adhesion between some adjacent license plates 7 may be too tight, such as the stickiness of their own surfaces (e.g., the stickiness of the paint after it has been painted), or the air between the surfaces of adjacent license plates 7 may be completely squeezed out, if the feeding and gripping mechanism moves the license plate 7 too quickly through the gap between the two license plate limiting units 12, it may not be able to separate the adjacent license plates 7 in time, resulting in multiple adhered license plates 7 being taken out by the feeding and gripping mechanism at the same time.

[0144] Based on this, by using the feeding and gripping mechanism to move the middle part of the foremost license plate 7 forward and then pause, keeping the foremost license plate 7 in the target state, time can be given for adjacent license plates 7 to separate from each other.

[0145] Meanwhile, in the target state, the license plate 7 remains protruding forward in the middle, and the two sides are still in a bent state abutting against the two license plate limiting units 12 respectively. If the license plate 7 is two license plates 7 that are stuck together, then the two license plates 7 are bent at the same time. At this time, there is a certain misalignment between the surface of the front license plate 7 and most or even all of the surface of the rear license plate 7. At this time, the adhesive force caused by the stickiness of the surfaces of the adjacent license plates 7 can be reduced, or air can enter between the surfaces of the adjacent license plates 7, thereby facilitating the separation of the front license plate 7 and the rear license plate 7. At this time, the front license plate 7 remains bent under the action of the feeding gripping mechanism and the license plate limiting unit 12, and the rear license plate 7 can return to a flat state under its own elastic drive, thereby further realizing the effect of de-adhesion between the adjacent license plates 7, and further ensuring that the feeding gripping device 2 can only take out one license plate 7 at a time.

[0146] In step S13, the preset pause time is preferably not less than 0.1s.

[0147] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A license plate loading and unloading system, characterized in that, It includes a license plate feeding device (1), a feeding gripping device (2), a conveyor belt (3), a paper feeding device (4), a discharging gripping device (5), and a discharging platform (6); The license plate feeding device (1) has a license plate outlet (111); the license plate feeding device (1) provides license plates (7); The conveying path of the conveyor belt (3) passes through the processing station of the processing equipment (10). The license plate (7) placed at the receiving end of the conveyor belt (3) can be carried by the conveyor belt (3) to the processing station of the processing equipment (10) for processing, and after the processing of the license plate (7) is completed, the license plate (7) is conveyed to the output end of the conveyor belt (3). The feeding gripping device (2) includes a feeding gripping mechanism capable of gripping operations, and the moving path of the feeding gripping mechanism passes through the license plate outlet (111) and the receiving end of the conveyor belt (3). The paper feeding device (4) has a paper outlet (412); the paper feeding device (4) provides paper (8); The unloading platform (6) has a placement station (611) capable of placing the receiving box (64). The feeding gripping device (5) includes a license plate gripping unit (51) and a paper gripping unit (52) both capable of gripping operations. The moving path of the license plate gripping unit (51) passes through the output end of the conveyor belt (3) and the placement station (611) of the feeding platform (6). The moving path of the paper gripping unit (52) passes through the paper outlet (412) and the placement station (611) of the feeding platform (6).

2. The license plate loading and unloading system according to claim 1, characterized in that, The license plate feeding device (1) includes a feeding frame (11) and a license plate feeding platform (13). The loading frame (11) has a license plate outlet (111) on one side, and the internal space of the loading frame (11) forms a license plate conveying channel toward the license plate outlet (111). The license plate outlet (111) is provided with license plate limiting units (12) on both sides. The two license plate limiting units (12) can block the two sides of the license plate (7). There is a gap between the two license plate limiting units (12) that allows the feeding and gripping mechanism to enter. When the loading frame (11) is placed on the license plate loading platform (13), the license plate (7) in the license plate conveying channel can be conveyed to the license plate outlet (111).

3. The license plate loading and unloading system according to claim 2, characterized in that, The license plate limiting unit (12) includes a base (122) and a blocking member (121). The blocking member (121) is a cylindrical structure. The base (122) is connected to the conveying channel. The base (122) and the blocking member (121) are rotatably connected around the axis of the blocking member (121).

4. A license plate loading and unloading system according to claim 2, characterized in that, The license plate feeding device (1) also includes a force-applying component (14), which is located in the conveying channel and can move toward the license plate outlet (111); The surface of the force-applying member (14) facing the license plate outlet (111) is the contact surface (141), and the contact surface (141) has an opening (142). The feeding and gripping mechanism is equipped with a first detection device (21); When the feeding and gripping mechanism enters between the two limiting units, the detection path of the first detection device (21) passes through the license plate outlet (111). When the feeding gripping mechanism extends between the two license plate limiting units (12) and the force application member (14) moves to the license plate outlet (111), the detection path of the first detection device (21) passes through the opening (142).

5. A license plate loading and unloading system according to claim 1, characterized in that, The receiving end of the conveyor belt (3) is equipped with a second detection device (31); The output end of the conveyor belt (3) is provided with a blocking member (121), a third detection device (33) and a stop member (34) in sequence along the conveying direction of the conveyor belt (3). The third detection device (33) is signal connected to the blocking member (121). The blocking member (121) has a blocking part, which can move and block the license plate (7) on the conveyor belt (3).

6. A license plate loading and unloading system according to claim 1, characterized in that, The paper feeding device (4) includes a paper feeding platform (41), a lifting unit and a fourth detection device (44). The paper feeding platform (41) is provided with a placement groove (411), and the top opening of the placement groove (411) serves as the paper discharge port (412). The lifting unit has a lifting platform (431), which is located in the placement slot (411); The fourth detection device (44) is signal-connected to the lifting unit, and the detection path of the fourth detection device (44) passes through the paper outlet (412).

7. A license plate loading and unloading system according to claim 6, characterized in that, Paper limiting units (42) are respectively provided on both sides of the paper discharge port (412). The two paper limiting units (42) can block the two sides of the paper (8). There is a gap between the two paper limiting units (42) that allows the paper gripping unit (52) to enter. The paper limiting unit (42) includes a rotating rod (422) and a contact (421). One end of the rotating rod (422) is rotatably connected to the paper feeding table (41), and the other ends of the two rotating rods (422) are respectively connected to the two ends of the contact (421) so that the contact (421) can rotate to the paper outlet (412). The contact (421) has a rotating surface that contacts the paper (8), and the diameter of the middle part of the rotating surface is greater than the diameter of the two ends.

8. A license plate loading and unloading system according to claim 1, characterized in that, The output end of the conveyor belt (3) and the paper outlet (412) are arranged side by side; The feeding gripping device (5) includes a feeding moving mechanism and a feeding gripping mechanism, wherein the moving end of the moving mechanism is connected to the feeding gripping mechanism; The feeding gripping mechanism includes a connecting seat (91), a license plate gripping unit (51), and a paper gripping unit (52); the license plate gripping unit (51) and the paper gripping unit (52) are disposed on the connecting seat (91), and the relative positions of the license plate gripping unit (51) and the paper gripping unit (52) are adapted to the relative positions of the output end of the conveyor belt (3) and the paper outlet (412); In the moving path of the feeding and gripping mechanism, the license plate gripping unit (51) and the paper gripping unit (52) pass through the placement station (611) of the feeding platform (6) in sequence.

9. A license plate loading and unloading system according to claim 1, characterized in that, The unloading platform (6) includes a platform body (61), a clamping unit (62), and a fifth detection device (63). The platform body (61) has the placement station (611); the clamping unit (62) and the fifth detection device (63) are disposed on the platform body (61), the clamping unit (62) can clamp the receiving box (64) in the placement station (611), and the fifth detection device (63) can detect whether the receiving box (64) is in place in the placement station (611).

10. A method for loading and unloading license plates, characterized in that, The system is applied to a license plate loading and unloading system as described in any one of claims 1-9, wherein the license plate loading and unloading system further includes a main control device, a first detection device (21), a second detection device (31), a third detection device (33), a fourth detection device (44), and a fifth detection device (63), wherein the first detection device (21) is used to detect whether there is a license plate (7) at the license plate outlet (111); the second detection device (31) is used to detect whether there is a license plate (7) at the receiving end of the conveyor belt (3); the third detection device (33) is used to detect whether there is a license plate (7) at the output end of the conveyor belt (3); the fourth detection device (44) is used to detect whether there is paper (8) at the paper outlet (412); and the fifth detection device (63) is used to detect whether there is a receiving box (64) at the placement station (611). The main control device is connected to the first detection device (21), the second detection device (31), the third detection device (33), the fourth detection device (44), and the fifth detection device (63) respectively; Including the following steps: The license plate feeding device (1) outputs license plates (7) to the license plate outlet (111) and is detected by the first detection device (21). When there is a license plate (7) at the license plate outlet (111), the first detection device (21) sends a first signal to the main control device. When the main control device receives the first signal, the feeding gripping device (2) is activated, and the feeding gripping mechanism grips the license plate (7) at the outlet and brings the license plate (7) to the receiving end of the conveyor belt (3). When a license plate (7) is detected by the second detection device (31), the second detection device (31) sends a second signal to the main control device when the receiving end of the conveyor belt (3) receives the second signal. When the main control device receives the second signal, the conveyor belt (3) is turned on, and the license plate (7) is brought to the processing station of the processing equipment (10) and the output end of the conveyor belt (3) in sequence. When a license plate (7) is detected by the third detection device (33), the fourth detection device (44) and the fifth detection device (63), the third detection device (33) sends a third signal to the main control device when the output end of the conveyor belt (3) receives the second signal. When there is paper (8) at the paper outlet (412), the fourth detection device (44) sends a third signal to the main control device. The fourth signal is issued when there is paper (8) at the paper outlet (412) and when there is a receiving box (64) at the placement station (611). The fifth detection device (63) sends a fifth signal to the main control device. When the main control device receives the third, fourth and fifth signals at the same time, the feeding gripping device (5) is turned on. The license plate gripping unit (51) grips the license plate (7) at the output end of the conveyor belt (3) and brings the license plate (7) into the receiving box (64). The paper gripping unit (52) grips the paper (8) at the paper outlet (412) and after the license plate (7) is brought into the receiving box (64), it brings the paper (8) into the receiving box (64) and covers the license plate (7).

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