Circulating coating feeding and discharging equipment

Abstract

The utility model relates to the technical field of circulating feeding and discharging, in particular to circulating coating feeding and discharging equipment which comprises an equipment body, and the equipment body comprises a rack, a lifting machining unit, a transverse circulating unit, a longitudinal lifting discharging unit and a longitudinal lifting feeding unit. The lifting processing unit is connected to the transverse circulating unit, and the lifting processing unit is used for driving the tray to lift so as to be matched with the robot to carry the tray to a coating station; the transverse circulating unit is used for driving the tray to circularly move in the horizontal direction; the longitudinal lifting discharging unit is arranged at one end of the lifting machining unit. The longitudinal lifting feeding unit is arranged at the other end of the lifting machining unit. The utility model provides circulating coating feeding and discharging equipment, which realizes automatic feeding and discharging and overcomes the defects of low efficiency and poor precision in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of circulating loading and unloading technology, and in particular to a circulating coating loading and unloading device. Background Technology

[0002] Coating is a process of depositing a thin film onto the surface of an object. It typically involves specific technologies and equipment to attach a thin film material with specific properties to the surface of the object, thereby improving its appearance, performance, or giving it a specific function. For example, in the manufacture of optical components, coating can improve the light transmittance and reflectivity of the components; in the processing of metal products, coating can enhance their corrosion resistance, wear resistance, and other properties.

[0003] In the field of coating processing, traditional loading and unloading equipment often has the following shortcomings: low degree of automation in loading and unloading, reliance on manual pallet handling, low efficiency and high labor intensity; single pallet conveying path, lack of circulation mechanism, making it difficult to meet the needs of continuous production; insufficient pallet positioning accuracy, resulting in deviations during robot handling or coating processing, affecting product quality. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a circulating coating loading and unloading device to realize automated loading and unloading, and solve the defects of low efficiency and poor precision in the existing technology.

[0005] The present invention adopts the following technical solution:

[0006] A circulating coating loading and unloading device includes a main body, which comprises a frame, a lifting processing unit, a horizontal circulation unit, a vertical lifting unloading unit, and a vertical lifting loading unit, all connected to the frame. The lifting processing unit is connected to the horizontal circulation unit and is used to drive the pallet to lift and move, cooperating with a robot to transport the pallet to the coating station. The horizontal circulation unit is used to drive the pallet to circulate horizontally. The vertical lifting unloading unit is located at one end of the lifting processing unit and is used to perform a vertical unloading operation on the pallet containing the coated substrate. The vertical lifting loading unit is located at the other end of the lifting processing unit and is used to perform a vertical loading operation on the pallet containing the substrate to be coated.

[0007] A further improvement to the above technical solution is that the horizontal circulation unit includes a first horizontal conveyor belt, a second horizontal conveyor belt, a third horizontal conveyor belt, a fourth horizontal conveyor belt, a fifth horizontal conveyor belt, and a sixth horizontal conveyor belt; the first horizontal conveyor belt, the second horizontal conveyor belt, the third horizontal conveyor belt, the fourth horizontal conveyor belt, the fifth horizontal conveyor belt, and the sixth horizontal conveyor belt are connected sequentially.

[0008] A further improvement to the above technical solution is that the transverse circulation unit further includes positioning pulleys, and the number of positioning pulleys is set to multiple.

[0009] A further improvement to the above technical solution is that multiple positioning pulleys are respectively arranged on both sides of the first transverse conveyor belt, the second transverse conveyor belt, the third transverse conveyor belt, the fourth transverse conveyor belt, the fifth transverse conveyor belt, and the sixth transverse conveyor belt, and the positioning pulleys are used to position the pallet.

[0010] A further improvement to the above technical solution is that the lifting processing unit includes a first lifting and supporting module, a second lifting and supporting module, and a limiting module; the first lifting and supporting module and the second lifting and supporting module are arranged opposite to each other and are respectively connected to both ends of the first transverse conveyor belt; the limiting module is connected to one side of the first lifting and supporting module and is used to limit the movement of the pallet.

[0011] A further improvement to the above technical solution is that the first lifting and supporting module includes a first mounting frame, a first drive cylinder, a first bracket, a first guide rod, and a cable chain; the first mounting frame has a first auxiliary wheel on the side opposite to the first drive cylinder; the output end of the first drive cylinder is connected to the first bracket and is used to drive the first bracket to lift and lower; the first bracket is used to support the tray; the number of the first guide rods is set to two, and the two first guide rods are installed at the bottom of the first bracket and are movably connected to the first mounting frame; the cable chain is connected to the first bracket and the frame respectively and is used for cable storage and movement guidance.

[0012] A further improvement to the above technical solution is that the second lifting and supporting module includes a second mounting frame, a second drive cylinder, a second bracket, and a second guide rod; the second mounting frame is provided with a second auxiliary wheel on the side opposite to the second drive cylinder; the output end of the second drive cylinder is connected to the second bracket and is used to drive the second bracket to lift and lower; the second bracket is used to support the tray; the number of the second guide rods is set to two, and the two second guide rods are installed at the bottom of the first bracket and are movably connected to the second mounting frame.

[0013] A further improvement to the above technical solution is that the limiting module includes a limiting mounting plate, a slide rail, a sliding plate, a limiting rod, and a third drive cylinder; the limiting mounting plate is fixedly installed on the inner side of the first mounting frame; the number of slide rails is set to two, and the two slide rails are installed on the limiting mounting plate; the sliding plate is slidably engaged with the slide rail; the number of limiting rods is set to two, and the two limiting rods are fixed at both ends of the sliding plate; the third drive cylinder is used to drive the sliding plate to move along the slide rail.

[0014] A further improvement to the above technical solution is that the longitudinal lifting and unloading unit includes two first longitudinal conveyor belts and a first lifting drive cylinder arranged opposite to each other; the two first longitudinal conveyor belts are respectively arranged at both ends of the second transverse conveyor belt and the third transverse conveyor belt, and a first support frame is connected below each of the first longitudinal conveyor belts; the output end of the first lifting drive cylinder is connected to the bottom of the first support frame, and is used to drive the first support frame and the first longitudinal conveyor belt to perform lifting and unloading movements; a first base is connected below the first lifting drive cylinder, and the first base is fixedly installed inside the frame to support the first lifting drive cylinder.

[0015] A further improvement to the above technical solution is that the longitudinal lifting and feeding unit includes two second longitudinal conveyor belts and a second lifting drive cylinder arranged opposite to each other; the two second longitudinal conveyor belts are respectively arranged on the fifth transverse conveyor belt and the sixth transverse conveyor belt, and a second support frame is connected below each of the second longitudinal conveyor belts; the output end of the second lifting drive cylinder is connected to the bottom of the second support frame, and is used to drive the second support frame and the second longitudinal conveyor belt to perform lifting and lowering movements; a second base is connected below the second lifting drive cylinder, and the second base is fixedly installed inside the frame to support the second lifting drive cylinder.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention utilizes a multi-unit collaborative design to construct an automated circulation system: a horizontal circulation unit ensures horizontal pallet transport, a lifting processing unit enables pallet lifting to facilitate robot handling, and a vertical lifting unloading unit and a vertical lifting loading unit automatically complete pallet loading and unloading. Modules such as positioning pulleys, guide rods, and limiting structures enhance operational accuracy and stability, reduce manual intervention, significantly improve coating loading and unloading efficiency, ensure production continuity, reduce operational errors, and are suitable for large-scale coating processing scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the circulating coating loading and unloading equipment of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the circulating coating loading and unloading equipment from another angle;

[0020] Figure 3 for Figure 1 A schematic diagram of the lifting processing unit of the circulating coating loading and unloading equipment;

[0021] Figure 4 for Figure 3 A magnified view of circle A in the lifting processing unit;

[0022] Figure 5 for Figure 1 A schematic diagram of the longitudinal lifting unloading unit of the circulating coating loading and unloading equipment;

[0023] Figure 6 for Figure 1 A schematic diagram of the longitudinal lifting and loading unit of the circulating coating loading and unloading equipment.

[0024] The numbers on the map are:

[0025] 10. Equipment body; 11. Frame; 12. Pallet; 20. Lifting processing unit; 30. Lateral circulation unit; 31. First lateral conveyor belt; 32. Second lateral conveyor belt; 33. Third lateral conveyor belt; 34. Fourth lateral conveyor belt; 35. Fifth lateral conveyor belt; 36. Sixth lateral conveyor belt; 37. Positioning pulley; 40. Longitudinal lifting unloading unit; 41. First longitudinal conveyor belt; 42. First lifting drive cylinder; 43. First support frame; 44. First base; 50. Longitudinal lifting loading unit; 51. Second longitudinal conveyor belt; 5 2. Second lifting drive cylinder; 53. Second support frame; 54. Second base; 60. First lifting and lifting module; 61. First mounting frame; 62. First drive cylinder; 63. First bracket; 64. First guide rod; 65. Cable chain; 66. First auxiliary wheel; 70. Second lifting and lifting module; 71. Second mounting frame; 72. Second drive cylinder; 73. Second bracket; 74. Second guide rod; 75. Second auxiliary wheel; 80. Limiting module; 81. Limiting mounting plate; 82. Slide rail; 83. Slide plate; 84. Limiting rod; 85. Third drive cylinder. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] like Figures 1 to 6 The diagram illustrates an embodiment of this utility model, relating to a circulating coating loading and unloading device. The device body 10 includes a frame 11, a lifting processing unit 20, a horizontal circulation unit 30, a vertical lifting unloading unit 40, and a vertical lifting loading unit 50, all connected to the frame 11. The lifting processing unit 20 is connected to the horizontal circulation unit 30 and is used to drive the pallet 12 to lift and lower to cooperate with a robot in transporting the pallet 12 to the coating station. The horizontal circulation unit 30 is used to drive the pallet 12 to circulate horizontally. The vertical lifting unloading unit 40 is located at one end of the lifting processing unit 20 and is used to perform a vertical unloading operation on the pallet 12 containing the coated substrate. The vertical lifting loading unit 50 is located at the other end of the lifting processing unit 20 and is used to perform a vertical loading operation on the pallet 12 containing the substrate to be coated.

[0030] Specifically, the equipment body 10 integrates a lifting processing unit 20, a horizontal circulation unit 30, a vertical lifting unloading unit 40, and a vertical lifting loading unit 50 via a frame 11, forming a complete automated system covering loading, circulating conveying, and unloading. During the loading stage, the vertical lifting loading unit 50 and the horizontal circulation unit 30 work together to load the pallet 12; during the circulating conveying stage, the horizontal circulation unit 30 and the lifting processing unit 20 work together to transfer and connect the pallet 12 to processing; during the unloading stage, the vertical lifting unloading unit 40 independently performs the unloading operation. The entire process is automated and cyclical, reducing manual intervention, improving the efficiency of coating loading and unloading, and ensuring continuous and efficient operation of the coating process.

[0031] Further, the transverse circulation unit 30 includes a first transverse conveyor belt 31, a second transverse conveyor belt 32, a third transverse conveyor belt 33, a fourth transverse conveyor belt 34, a fifth transverse conveyor belt 35, and a sixth transverse conveyor belt 36; the first transverse conveyor belt 31, the second transverse conveyor belt 32, the third transverse conveyor belt 33, the fourth transverse conveyor belt 34, the fifth transverse conveyor belt 35, and the sixth transverse conveyor belt 36 are connected sequentially. Specifically, the first to sixth transverse conveyor belts 36 are connected sequentially to form a closed-loop conveying path. In the loading stage, the empty pallet 12 is transferred via the fourth transverse conveyor belt 34 and the fifth transverse conveyor belt 35; in the circulation conveying stage, the pallet 12 moves continuously along the closed-loop path; in the unloading stage, the empty pallet 12 returns to the loop via the third transverse conveyor belt 33. This structure ensures that the pallet 12 is transported stably and continuously in each working stage, avoiding transport interruptions or path confusion, providing basic support for the entire process of equipment operation, and improving the overall transport smoothness; each transverse conveyor belt is equipped with an independent drive device to drive the operation of each transverse conveyor belt, and the operating directions of each transverse conveyor belt are coordinated with each other to ensure that the pallet 12 can continuously and stably circulate along the entire circular transport path.

[0032] Furthermore, the transverse circulation unit 30 also includes positioning pulleys 37. Multiple positioning pulleys 37 are respectively located on both sides of the first transverse conveyor belt 31, the second transverse conveyor belt 32, the third transverse conveyor belt 33, the fourth transverse conveyor belt 34, the fifth transverse conveyor belt 35, and the sixth transverse conveyor belt 36. These positioning pulleys 37 are used to position the pallet 12. Specifically, multiple positioning pulleys 37 are arranged on both sides of each transverse conveyor belt. During the cyclic conveying phase, the positioning pulleys 37 physically limit the movement trajectory of the pallet 12, accurately guiding its movement even at conveyor belt junctions, preventing the pallet 12 from shifting or jamming. This design ensures that the pallet 12 reaches the lifting processing unit 20, the longitudinal lifting loading unit 50, and the longitudinal lifting unloading unit 40 with the required positional accuracy, providing a reliable positioning basis for robot handling and loading / unloading operations, and reducing errors in subsequent processes.

[0033] Further, the lifting processing unit 20 includes a first lifting and supporting module 60, a second lifting and supporting module 70, and a limiting module 80; the first lifting and supporting module 60 and the second lifting and supporting module 70 are arranged opposite to each other and are respectively connected to both ends of the first transverse conveyor belt 31; the limiting module 80 is connected to one side of the first lifting and supporting module 60, and the limiting module 80 is used to restrict the movement of the pallet 12. Specifically, the first lifting and supporting module 60 and the second lifting and supporting module 70 of the lifting processing unit 20 are arranged opposite to each other and are connected to the first transverse conveyor belt 31. During the cyclic conveying stage, when the pallet 12 arrives at the lifting processing unit 20, the module and the transverse cyclic unit 30 work together to adjust the pallet 12 to the robot's handling height through lifting and lowering actions. The limiting module 80 simultaneously restricts the movement of the pallet 12, ensuring that the position is stable when the robot grasps the pallet 12, improving the accuracy and efficiency of the handling process, and ensuring the loading accuracy of the coating station.

[0034] Further, the first lifting and supporting module 60 includes a first mounting frame 61, a first drive cylinder 62, a first bracket 63, a first guide rod 64, and a cable chain 65; the first mounting frame 61 has a first auxiliary wheel 66 on the side opposite to the first drive cylinder 62; the output end of the first drive cylinder 62 is connected to the first bracket 63 to drive the first bracket 63 to lift and lower; the first bracket 63 is used to support the tray 12; there are two first guide rods 64, which are installed at the bottom of the first bracket 63 and are movably connected to the first mounting frame 61; the cable chain 65 is connected to the first bracket 63 and the frame 11 respectively, and is used for cable storage and motion guidance. Specifically, in the first lifting and supporting module 60, the first drive cylinder 62 drives the first bracket 63 to lift and lower, and the two first guide rods 64 provide precise guidance to ensure smooth lifting and lowering of the bracket. When the tray 12 arrives during the cyclic conveying stage, the module stably lifts the tray 12, the first auxiliary wheel 66 reduces motion friction, and the cable chain 65 orderly stores the cables. The above design ensures reliable module operation, so that when the robot transports the pallet 12 to the coating station, the pallet 12 is supported stably without shaking, improving the safety and accuracy of the transportation process.

[0035] Furthermore, the second lifting module 70 includes a second mounting frame 71, a second drive cylinder 72, a second bracket 73, and a second guide rod 74. The second mounting frame 71 has a second auxiliary wheel 75 on the side opposite to the second drive cylinder 72. The output end of the second drive cylinder 72 is connected to the second bracket 73 to drive the second bracket 73 to lift. The second bracket 73 supports the pallet 12. Two second guide rods 74 are installed at the bottom of the first bracket 63 and are movably connected to the second mounting frame 71. Specifically, the second lifting module 70 adopts a symmetrical structural design with the first lifting module 60, and the second drive cylinder 72, the second bracket 73, and the two second guide rods 74 work together. When lifting the pallet 12, the modules on both sides lift synchronously, and the second auxiliary wheel 75 reduces friction, ensuring uniform force and stable support on both sides of the pallet 12. This design enhances the support capability of the lifting processing unit 20 for the pallet 12, precisely coordinates with the robot's handling actions, and improves the overall stability of the structure during cyclic transport.

[0036] Further, the limiting module 80 includes a limiting mounting plate 81, a slide rail 82, a sliding plate 83, a limiting rod 84, and a third drive cylinder 85; the limiting mounting plate 81 is fixedly installed on the inner side of the first mounting frame 61; the number of slide rails 82 is set to two, and the two slide rails 82 are installed on the limiting mounting plate 81; the sliding plate 83 is slidably engaged with the slide rail 82; the number of limiting rods 84 is set to two, and the two limiting rods 84 are fixed at both ends of the sliding plate 83; the third drive cylinder 85 is used to drive the sliding plate 83 to move along the slide rail 82. Specifically, through the linkage of the slide rail 82, the sliding plate 83, the limiting rod 84, and the third drive cylinder 85, when the pallet 12 reaches the lifting processing unit 20, the third drive cylinder 85 drives the limiting rod 84 to extend, precisely limiting the movement of the pallet 12. This design prevents the pallet 12 from shifting during lifting and handling, ensuring that the position of the robot is fixed when it grasps the pallet 12. This provides a reliable guarantee for the positioning of the pallet 12 before coating processing and avoids handling errors or processing deviations caused by the movement of the pallet 12.

[0037] Furthermore, the longitudinal lifting and unloading unit 40 includes two first longitudinal conveyor belts 41 arranged opposite to each other and a first lifting drive cylinder 42; the two first longitudinal conveyor belts 41 are respectively arranged at both ends of the second transverse conveyor belt 32 and the third transverse conveyor belt 33, and a first support frame 43 is connected to the bottom of each first longitudinal conveyor belt 41; the output end of the first lifting drive cylinder 42 is connected to the bottom of the first support frame 43, and is used to drive the first support frame 43 and the first longitudinal conveyor belt 41 to perform lifting and unloading movements; a first base 44 is connected to the bottom of the first lifting drive cylinder 42, and the first base 44 is fixedly installed inside the frame 11 to support the first lifting drive cylinder 42.

[0038] Furthermore, the longitudinal lifting and feeding unit 50 includes two second longitudinal conveyor belts 51 arranged opposite to each other and a second lifting drive cylinder 52; the two second longitudinal conveyor belts 51 are respectively arranged on the fifth transverse conveyor belt 35 and the sixth transverse conveyor belt 36, and a second support frame 53 is connected below each of the second longitudinal conveyor belts 51; the output end of the second lifting drive cylinder 52 is connected to the bottom of the second support frame 53, and is used to drive the second support frame 53 and the second longitudinal conveyor belt 51 to perform lifting and lowering movements; a second base 54 is connected below the second lifting drive cylinder 52, and the second base 54 is fixedly installed inside the frame 11 to support the second lifting drive cylinder 52.

[0039] Specifically, in the longitudinal lifting unloading unit 40 and the longitudinal lifting loading unit 50, the lifting drive cylinder drives the conveyor belt to lift and lower. During the loading stage, the second lifting drive cylinder 52 drives the second longitudinal conveyor belt 51 to lift and lower, efficiently loading the substrate tray 12 to be coated; during the unloading stage, the first lifting drive cylinder 42 drives the first longitudinal conveyor belt 41 to lift and lower, achieving automated unloading of the coated tray 12. This design replaces manual handling, reduces labor intensity, improves loading and unloading efficiency, and ensures precise matching of the equipment's loading and unloading rhythm with the coating process, guaranteeing continuous production; the longitudinal conveyor belt is driven by a drive device.

[0040] The working principle of this utility model is as follows:

[0041] Loading stage: The fourth transverse conveyor belt 34 of the transverse circulation unit 30 transports the empty pallet 12 to the fifth transverse conveyor belt 35. The substrate to be coated is installed on the pallet 12 by manual or automatic device and placed above the second longitudinal conveyor belt 51. At the same time, the second lifting drive cylinder 52 of the longitudinal lifting loading unit 50 drives the second longitudinal conveyor belt 51 to rise. Then the second longitudinal conveyor belt 51 transports the pallet 12 to the sixth transverse conveyor belt 36 and then descends. The pallet 12 then enters the transverse circulation unit 30 via the sixth transverse conveyor belt 36.

[0042] Circular conveying: The first to sixth transverse conveyor belts 36 of the transverse circulation unit 30 are linked end to end, driving the pallet 12 to circulate horizontally. The positioning pulleys 37 ensure the accuracy of its movement trajectory. When the pallet 12 reaches the lifting processing unit 20, the drive cylinders of the first lifting module 60 and the second lifting module 70 are activated to lift the pallet 12 and move it up and down. The robot then transports the pallet 12 to the coating station for processing.

[0043] Unloading stage: The coated tray 12 is conveyed to the longitudinal lifting unloading unit 40 via the transverse circulation unit 30. The first lifting drive cylinder 42 drives the first longitudinal conveyor belt 41 to rise. The first longitudinal conveyor belt 41 transports the tray 12 above the third transverse conveyor belt 33 for manual or automatic unloading. After the unloading operation is completed, the empty tray 12 descends with the first longitudinal conveyor belt 41 and is transported to the next conveyor belt via the third transverse conveyor belt 33. Finally, the tray 12 is cyclically loaded and unloaded, ensuring continuous operation of the coating process.

[0044] This invention utilizes a multi-unit collaborative design to construct an automated circulation system: a horizontal circulation unit 30 ensures the horizontal circulation of the pallet 12; a lifting processing unit 20 lifts the pallet 12 to facilitate robot handling; and a vertical lifting unloading unit 40 and a vertical lifting loading unit 50 automatically complete the loading and unloading of the pallet 12. Modules such as positioning pulleys 37, guide rods, and limiting structures enhance operational accuracy and stability, reduce manual intervention, significantly improve coating loading and unloading efficiency, ensure production continuity, reduce operational errors, and are suitable for large-scale coating processing scenarios.

[0045] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A circulating coating loading and unloading device, characterized in that, The equipment includes a main body, which comprises a frame, a lifting processing unit, a horizontal circulation unit, a vertical lifting unloading unit, and a vertical lifting loading unit, all connected to the frame. The lifting processing unit is connected to the horizontal circulation unit and is used to drive the pallet to lift and lower to cooperate with the robot in transporting the pallet to the coating station. The horizontal circulation unit is used to drive the pallet to circulate horizontally. The vertical lifting unloading unit is located at one end of the lifting processing unit and is used to perform a vertical unloading operation on the pallet containing the coated substrate. The vertical lifting loading unit is located at the other end of the lifting processing unit and is used to perform a vertical loading operation on the pallet containing the substrate to be coated.

2. The circulating coating loading and unloading equipment according to claim 1, characterized in that, The horizontal circulation unit includes a first horizontal conveyor belt, a second horizontal conveyor belt, a third horizontal conveyor belt, a fourth horizontal conveyor belt, a fifth horizontal conveyor belt, and a sixth horizontal conveyor belt; the first horizontal conveyor belt, the second horizontal conveyor belt, the third horizontal conveyor belt, the fourth horizontal conveyor belt, the fifth horizontal conveyor belt, and the sixth horizontal conveyor belt are connected sequentially.

3. The circulating coating loading and unloading equipment according to claim 1, characterized in that, The transverse circulation unit also includes positioning pulleys, and the number of positioning pulleys is set to multiple.

4. The circulating coating loading and unloading equipment according to claim 3, characterized in that, Multiple positioning pulleys are respectively disposed on both sides of the first, second, third, fourth, fifth, and sixth transverse conveyor belts, and the positioning pulleys are used to position the pallet.

5. The circulating coating loading and unloading equipment according to claim 1, characterized in that, The lifting processing unit includes a first lifting and supporting module, a second lifting and supporting module, and a limiting module; the first lifting and supporting module and the second lifting and supporting module are arranged opposite to each other and are respectively connected to both ends of the first transverse conveyor belt; the limiting module is connected to one side of the first lifting and supporting module and is used to limit the movement of the pallet.

6. The circulating coating loading and unloading equipment according to claim 5, characterized in that, The first lifting and supporting module includes a first mounting frame, a first drive cylinder, a first bracket, a first guide rod, and a cable chain; the first mounting frame has a first auxiliary wheel on the side opposite to the first drive cylinder; the output end of the first drive cylinder is connected to the first bracket and is used to drive the first bracket to lift and lower; the first bracket is used to support the tray; there are two first guide rods, which are installed at the bottom of the first bracket and are movably connected to the first mounting frame; the cable chain is connected to the first bracket and the frame respectively and is used for cable storage and movement guidance.

7. The circulating coating loading and unloading equipment according to claim 5, characterized in that, The second lifting and supporting module includes a second mounting frame, a second drive cylinder, a second bracket, and a second guide rod; the second mounting frame has a second auxiliary wheel on the side opposite to the second drive cylinder; the output end of the second drive cylinder is connected to the second bracket and is used to drive the second bracket to lift and lower; the second bracket is used to support the tray; the number of the second guide rods is set to two, and the two second guide rods are installed at the bottom of the first bracket and are movably connected to the second mounting frame.

8. The circulating coating loading and unloading equipment according to claim 5, characterized in that, The limiting module includes a limiting mounting plate, a slide rail, a sliding plate, a limiting rod, and a third drive cylinder; the limiting mounting plate is fixedly installed on the inner side of the first mounting frame; there are two slide rails, which are installed on the limiting mounting plate; the sliding plate slides in conjunction with the slide rail; there are two limiting rods, which are fixed at both ends of the sliding plate; the third drive cylinder is used to drive the sliding plate to move along the slide rail.

9. The circulating coating loading and unloading equipment according to claim 1, characterized in that, The longitudinal lifting and unloading unit includes two first longitudinal conveyor belts arranged opposite each other and a first lifting drive cylinder; the two first longitudinal conveyor belts are respectively arranged at both ends of the second transverse conveyor belt and the third transverse conveyor belt, and a first support frame is connected below each of the first longitudinal conveyor belts; the output end of the first lifting drive cylinder is connected to the bottom of the first support frame and is used to drive the first support frame and the first longitudinal conveyor belt to perform lifting and unloading movements. A first base is connected to the bottom of the first lifting drive cylinder. The first base is fixedly installed inside the frame to support the first lifting drive cylinder.

10. The circulating coating loading and unloading equipment according to claim 1, characterized in that, The longitudinal lifting and feeding unit includes two second longitudinal conveyor belts arranged opposite each other and a second lifting drive cylinder; the two second longitudinal conveyor belts are respectively arranged on the fifth transverse conveyor belt and the sixth transverse conveyor belt, and a second support frame is connected below each of the second longitudinal conveyor belts; the output end of the second lifting drive cylinder is connected to the bottom of the second support frame and is used to drive the second support frame and the second longitudinal conveyor belt to perform lifting and lowering movements; A second base is connected below the second lifting drive cylinder. The second base is fixedly installed inside the frame to support the second lifting drive cylinder.

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