A spot welding conveying platform facilitating automatic welding of a delivery cabinet body

Abstract

This utility model relates to the field of automatic welding technology and discloses a spot welding conveyor platform for facilitating automatic welding of express delivery locker bodies. The platform includes a welding conveyor platform with a lifting component at its center and a limiting structure at its front. A driving component is located on the outer wall of the welding conveyor platform. Clamping plates are located on both sides of the center of the upper surface of the welding conveyor platform, and positioning plates are located on the rear of the upper surfaces of the two clamping plates. The lifting component includes a base plate and a channel. A first hydraulic cylinder is fixedly connected to the center of the upper surface of the base plate, and a lifting plate is fixedly connected to the output end of the first hydraulic cylinder. The channel is located on both sides of the center of the upper surface of the welding conveyor platform. This utility model, through the driving component, lifting component, positioning plates, and limiting structure, enables rapid positioning and clamping, significantly improving the productivity and quality of express delivery locker welding.

Description

Technical Field

[0001] This utility model relates to the field of automatic welding technology, and in particular to a spot welding conveying platform that facilitates automatic welding of express cabinet bodies. Background Technology

[0002] The cabinet body is the physical support of the smart express delivery locker. It is not just a simple "metal box", but a composite industrial product that integrates sheet metal technology, electronic control and Internet of Things technology. Currently, the specific operation of express delivery locker manufacturers is as follows: after the cabinet frame is welded, the partitions are first spot welded to the middle vertical plate, and then the welded middle vertical plate is placed into the cabinet frame and spot welded manually. The cabinet body of a 32-door express delivery locker is 750mm long × 380mm wide × 2500mm high.

[0003] Existing automated welding conveyor platforms for express delivery lockers still have some problems. There are approximately 500 welding points between the internal vertical plates and partitions and the locker frame. Currently, these nearly 500 welding points are done manually by placing the locker on a regular platform with a spot welding gun and welding each surface one by one. Such a regular platform is not conducive to meeting the requirements of an automated welding production line. The platform structure used for spot welding the vertical plates and partitions of the current express delivery lockers is simple and not convenient for spot welding, which cannot provide convenience for subsequent automated welding lines, thereby increasing labor input and reducing production efficiency. Therefore, those skilled in the art have provided a spot welding conveyor platform that facilitates the automated welding of express delivery locker bodies to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a spot welding conveyor platform that facilitates the automatic welding of express cabinet bodies. The drive components, lifting components, positioning plates and limiting structures in the welding conveyor platform can quickly position and clamp, which can significantly improve the productivity and quality of express cabinet welding.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spot welding conveying platform for facilitating automatic welding of express cabinet bodies, comprising a welding conveying platform, a lifting component at the center of the inside of the welding conveying platform, a limiting structure at the front of the inside of the lifting component, a driving component on the outer wall of the welding conveying platform, clamping plates at both sides of the center of the upper surface of the welding conveying platform, and positioning plates at the rear of the upper surface of the two clamping plates.

[0006] The lifting component includes a base plate and a channel. A first hydraulic cylinder is fixedly connected to the center of the upper surface of the base plate. A lifting plate is fixedly connected to the output end of the first hydraulic cylinder. The channel is opened on both sides of the center of the upper surface of the welding conveying platform. Mounting frames are fixedly connected to the upper surfaces of the lifting plates inside the two base plates. Mounting plates are fixedly connected to the interior of the two mounting frames. Multiple rotating shafts are arranged front and back on the upper part of the interior of the two mounting plates. Two conveyor belts are located on the outer side of the multiple rotating shafts.

[0007] Through the above technical solution, by controlling the extension of the first hydraulic cylinder, the lifting plate is pushed to move upward along the guide rod, so that the mounting frame and the conveyor belt pass through the channel and rise, lifting the express cabinet. The cabinet body is then moved by two belt conveyors to facilitate conveying and welding.

[0008] Furthermore, a connecting rod is provided between the two mounting brackets at the front. The two ends of the connecting rod pass through the two mounting brackets and the two mounting plates respectively and extend into the interior of the two mounting plates. The ends are fixedly connected to the two rotating shafts at the front. A servo motor is fixedly connected to the center of the upper surface of the lifting plate at the front. A first pulley is fixedly connected to the output end of the servo motor. A second pulley is fixedly sleeved on the outer wall of the connecting rod at the upper end of the first pulley. A transmission belt is sleeved on the outer side of the second pulley and the first pulley.

[0009] With the above technical solution, the servo motor starts, and drives the connecting rod to rotate through the first pulley, the transmission belt and the second pulley, thereby rotating the shaft and the transmission belt. This is a commonly used technical solution in existing belt conveyors, and will not be elaborated on here.

[0010] Furthermore, a base is fixedly connected to each of the four opposite corners of the upper surface of the base plate, and a guide rod is fixedly connected to the lower surface of the upper lifting plate of each of the four bases. The lower ends of the four guide rods pass through the upper surface of the four bases and extend into the interior of the four bases.

[0011] The above technical solution allows the lifting platform to move upward along the guide rod, improving its stability during ascent and descent.

[0012] Furthermore, taking one of the positioning plates as an example, the positioning plate includes a fixing plate. A third groove is provided at one end of the lower end face of the fixing plate near the center of the welding conveying platform. A drive motor is fixedly connected to the rear end face of the fixing plate at the rear end of the third groove. The output end of the drive motor passes through the rear end face of the fixing plate and extends into the third groove. A second lead screw is fixedly connected to the end of the motor. A clamping plate is threaded on the outer wall of the second lead screw.

[0013] Through the above technical solution, the two drive motors start synchronously, driving the second lead screw to rotate, causing the clamping plate to move along the third groove, and cooperating with the fixing plate to press the express cabinet from the front and back, further applying a pushing force to the rear end of the express cabinet, so as to achieve all-round rigid fixation of the cabinet body in the front, back, left and right and bottom.

[0014] Furthermore, the limiting structure includes a second hydraulic cylinder, which is fixedly connected to the upper end face of the base plate at the front. The output end of the second hydraulic cylinder is fixedly connected to a limiting rod, which passes through the inner wall of the welding conveying platform and extends to the upper end of the welding conveying platform. A guide seat is fixedly connected to the upper inner wall of the welding conveying platform located on the outer side of the limiting rod.

[0015] Through the above technical solution, the second hydraulic cylinder is activated, pushing the limit rod to rise along the guide seat to form a physical block.

[0016] Furthermore, the driving component includes four bases, which are fixedly connected to the upper sides of the front and rear end faces of the welding conveying platform. Each of the four bases has a first groove at one of the four diagonal positions near the welding conveying platform. Each of the four first grooves has a first umbrella wheel and a second umbrella wheel that mesh with each other. Each of the four bases has a second groove on the lower end face of one of the four first grooves. One end of each of the four first umbrella wheels passes through the inner wall of the four first grooves and into the four second grooves. Each end of each first umbrella wheel is fixedly connected to a first lead screw. A third shaft is provided between the two first lead screws at the front. The two ends of the two third shafts rotatably pass through the side wall of the two bases at the front and into the two second grooves at the front. Each end of the third shaft is fixedly connected to the two first lead screws. Each of the four first lead screws has a slider threaded on its outer wall. Each of the four sliders is fixedly connected to two clamping plates.

[0017] The above technical solution involves first starting the reduction motor, which drives the second parasol wheel on the front side to rotate, thereby driving the first parasol wheel meshing with it to rotate, causing the first lead screw to rotate and move the slider on the base. At this time, the connecting rod drives the other first lead screw on the front side to rotate, causing the slider to move on the base. Through the meshing of the first and second parasol wheels, the second shaft rotates, and the first shaft rotates synchronously, thus causing the two first lead screws on the front side to rotate synchronously. Since the outer threads are set in opposite directions, the two sliders move synchronously towards the center position.

[0018] Furthermore, a first shaft and a second shaft are respectively provided between the two bases at the front and the two bases at the rear. The front and rear ends of the first shaft and the second shaft pass through the rear end face of the two bases at the front and the front end face of the two bases at the rear, respectively, and lead to the interior of the four first grooves. The ends are respectively fixedly connected to the four second umbrella wheels. A reduction motor is fixedly connected to one side of the front end face of the base. The output end of the reduction motor passes through the front end face of the base and leads to the interior of the first groove. The end is fixedly connected to the second umbrella wheel.

[0019] Through the above technical solution, the meshing of the first umbrella wheel and the second umbrella wheel drives the second shaft to rotate. The first shaft rotates synchronously, thereby driving the two rearmost second umbrella wheels to rotate. The two rearmost second umbrella wheels drive the two rearmost first umbrella wheels to rotate, thereby driving the two rearmost first lead screws to rotate synchronously. The two rearmost sliders then move synchronously towards the center position, thereby adjusting the distance between the two clamping plates to adapt to the width of the express cabinet.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by controlling the extension of the first hydraulic cylinder, the lifting plate is pushed to move upward along the guide rod, so that the mounting frame and the conveyor belt pass through the channel and rise, lifting the express cabinet. At this time, the servo motor starts, and drives the connecting rod to rotate through the first pulley, the transmission belt and the second pulley. Then the rotating shaft and the conveyor belt rotate, transporting the express cabinet forward until it hits the limit rod to complete the precise positioning. After that, the first hydraulic cylinder resets, the lifting plate descends, and the express cabinet is smoothly placed on the copper base plate of the welding conveyor platform, which is convenient for conveying and welding.

[0022] 2. In this utility model, the geared motor starts, driving the second parasol wheel on the front side to rotate, which in turn drives the first parasol wheel meshing with it to rotate, causing the first lead screw to rotate and drive the slider to move on the base. At this time, the connecting rod drives another first lead screw on the front side to rotate, driving the slider to move on the base. Through the meshing of the first parasol wheel and the second parasol wheel, the second shaft is driven to rotate. The first shaft rotates synchronously, thereby driving the two second parasol wheels on the rear side to rotate. The two second parasol wheels on the rear side drive the two first parasol wheels on the rear side to rotate, thereby driving the two first lead screws on the rear side to rotate synchronously. The two sliders on the rear side then move synchronously towards the center position.

[0023] 3. In this utility model, two drive motors start synchronously at the same time, driving the second lead screw to rotate, causing the clamping plate to move along the third groove, and cooperating with the fixing plate to press the express cabinet from the front and rear directions, further applying a pushing force to the rear end of the express cabinet, so as to achieve all-round rigid fixation of the cabinet body in the front, back, left and right and bottom. Attached Figure Description

[0024] Figure 1This is a perspective view of a spot welding conveyor platform that facilitates automatic welding of express cabinet bodies, as proposed in this utility model.

[0025] Figure 2 A three-dimensional sectional view of a spot welding conveying platform for facilitating automatic welding of express cabinet bodies, as proposed in this utility model.

[0026] Figure 3 A perspective view of a spot welding conveyor lifting component for facilitating automatic welding of express cabinet bodies, as proposed in this utility model.

[0027] Figure 4 This is a perspective view of a spot welding conveyor positioning plate for facilitating automatic welding of express cabinet bodies, as proposed in this utility model.

[0028] Figure 5 This is a bottom view of a spot welding conveyor platform that facilitates automatic welding of express cabinet bodies, as proposed in this utility model.

[0029] Legend:

[0030] 1. Welding conveyor platform; 2. Drive unit; 3. Lifting unit; 4. Clamping plate; 5. Positioning plate; 6. Limiting structure;

[0031] 201. Gear motor; 202. Base; 203. Slider; 204. First groove; 205. First parasol wheel; 206. Second parasol wheel; 207. First shaft; 208. Second shaft; 209. Second groove; 210. First lead screw; 211. Third shaft;

[0032] 301. Base plate; 302. First hydraulic cylinder; 303. Channel; 304. Rotating shaft; 305. Base; 306. Guide rod; 307. Lifting plate; 308. Servo motor; 309. First pulley; 310. Second pulley; 311. Connecting rod; 312. Transmission belt; 313. Mounting bracket; 314. Mounting plate; 315. Conveyor belt;

[0033] 501. Fixing plate; 502. Third groove; 503. Clamping plate; 504. Drive motor; 505. Second lead screw;

[0034] 601. Second hydraulic cylinder; 602. Guide seat; 603. Limit rod. Detailed Implementation

[0035] 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.

[0036] Reference Figure 1-5 The present invention provides an embodiment of a spot welding conveying platform for facilitating automatic welding of express cabinet bodies, comprising a welding conveying platform 1, a lifting component 3 at the center of the inside of the welding conveying platform 1, a limiting structure 6 at the front of the inside of the lifting component 3, a driving component 2 on the outer wall of the welding conveying platform 1, clamping plates 4 at both sides of the center of the upper end face of the welding conveying platform 1, and positioning plates 5 at the rear of the upper end face of the two clamping plates 4.

[0037] like Figure 1 , 2 As shown in Figure 3, the lifting component 3 includes a base plate 301 and a channel 303. A first hydraulic cylinder 302 is fixedly connected to the center of the upper surface of the base plate 301. A lifting plate 307 is fixedly connected to the output end of the first hydraulic cylinder 302. The channel 303 is located on both sides of the center of the upper surface of the welding conveying platform 1. Mounting frames 313 are fixedly connected to the upper surfaces of the lifting plates 307 inside the two base plates 301. Mounting plates 314 are fixedly connected to the inside of the two mounting frames 313. Multiple rotating shafts 304 are arranged front and back on the upper part of the inside of the two mounting plates 314. Two conveyor belts 315 are located on the outside of the multiple rotating shafts 304. By controlling the extension of the first hydraulic cylinder 302, the lifting plate 307 is pushed to move upward along the guide rod 306, so that the mounting frame 313 and the conveyor belt 315 pass through the channel 303 and rise, lifting the express cabinet. The cabinet body is moved by the two belt conveyors to facilitate conveying and welding.

[0038] A connecting rod 311 is provided between the two mounting brackets 313 at the front. The two ends of the connecting rod 311 pass through the two mounting brackets 313 and the two mounting plates 314 respectively and are connected to the interior of the two mounting plates 314. The ends are fixedly connected to the two rotating shafts 304 at the front. A servo motor 308 is fixedly connected to the center of the upper surface of the lifting plate 307 at the front. A first pulley 309 is fixedly connected to the output end of the servo motor 308. A second pulley 310 is fixedly sleeved on the outer wall of the connecting rod 311 at the upper end of the first pulley 309. A transmission belt 312 is sleeved on the outer side of the second pulley 310 and the first pulley 309. When the servo motor 308 is started, the connecting rod 311 is driven to rotate through the first pulley 309, the transmission belt 312 and the second pulley 310, thereby rotating the rotating shaft 304 and the transmission belt 315. This is a commonly used technical solution in existing belt conveyors, and will not be described in detail here.

[0039] A base 305 is fixedly connected to each of the four opposite corners of the upper surface of the base plate 301. A guide rod 306 is fixedly connected to the lower surface of the lifting plate 307 on the upper surface of each of the four bases 305. The lower ends of the four guide rods 306 pass through the upper surface of the four bases 305 and extend into the interior of the four bases 305. The lifting plate 307 moves upward along the guide rods 306 to improve the stability of the lifting plate 307 when it rises and falls.

[0040] like Figure 1 , 2 As shown in Figure 4, taking one of the positioning plates 5 as an example, the positioning plate 5 includes a fixing plate 501. A third groove 502 is provided at one end of the lower end face of the fixing plate 501 near the center of the welding conveying platform 1. A drive motor 504 is fixedly connected to the rear end face of the fixing plate 501 at the rear end of the third groove 502. The output end of the drive motor 504 passes through the rear end face of the fixing plate 501 and extends into the third groove 502. A second lead screw 505 is fixedly connected to the end of the drive motor 504. A clamping plate 503 is threaded on the outer wall of the second lead screw 505. At the same time, the two drive motors 504 start synchronously, driving the second lead screw 505 to rotate, causing the clamping plate 503 to move along the third groove 502. This, together with the fixing plate 501, presses the express cabinet from the front and rear directions, further applying a pushing force to the rear end of the express cabinet, thereby achieving all-round rigid fixation of the cabinet body in the front, rear, left and right and bottom directions.

[0041] like Figure 1 , 2 As shown in Figure 3, the limiting structure 6 includes a second hydraulic cylinder 601, which is fixedly connected to the upper end face of the base plate 301. A limiting rod 603 is fixedly connected to the output end of the second hydraulic cylinder 601. The limiting rod 603 passes through the inner wall of the welding conveying platform 1 and extends to the upper end of the welding conveying platform 1. A guide seat 602 is fixedly connected to the inner wall of the welding conveying platform 1 on the outer side of the limiting rod 603. When the second hydraulic cylinder 601 is activated, it pushes the limiting rod 603 to rise along the guide seat 602 to form a physical block.

[0042] like Figure 1 , 2As shown in Figure 5, the drive component 2 includes four bases 202, which are fixedly connected to the upper sides of the front and rear end faces of the welding conveying platform 1. Each of the four bases 202 has a first groove 204 at one of its four diagonal positions near the welding conveying platform 1. Each of the four first grooves 204 contains a first parapet wheel 205 and a second parapet wheel 206 that mesh with each other. Each of the four bases 202 has a second groove 209 on one side of each of the four first grooves 204. One end of each of the four first parapet wheels 205 passes through the inner wall of the four first grooves 204 and into the four second grooves 209, and each end is fixedly connected to a first lead screw 210. A third shaft 211 is located between the two first lead screws 210 at the front. The two ends of the two third shafts 211 rotatably pass through one side wall of the two front bases 202 and into the two front second grooves 209. The ends are fixedly connected to two first lead screws 210 respectively. The outer walls of the four first lead screws 210 are threaded with sliders 203. The four sliders 203 are fixedly connected to two clamping plates 4 respectively. First, the reduction motor 201 starts, driving the second parasol wheel 206 on the front side to rotate, which in turn drives the first parasol wheel 205 meshing with it to rotate, causing the first lead screw 210 to rotate and drive the sliders 203 to move on the base 202. At this time, the connecting rod 311 drives another first lead screw 210 on the front side to rotate, driving the sliders 203 to move on the base 202. Through the meshing of the first parasol wheel 205 and the second parasol wheel 206, the second shaft 208 is driven to rotate. The first shaft 207 rotates synchronously, so that the two first lead screws 210 on the front side rotate synchronously. And because the outer threads are set in opposite directions, the two sliders 203 move synchronously towards the center position.

[0043] A first shaft 207 and a second shaft 208 are respectively provided between the two front bases 202 and the two rear bases 202. The front and rear ends of the first shaft 207 and the second shaft 208 pass through the rear end face of the two front bases 202 and the front end face of the two rear bases 202, respectively, and extend into the four first grooves 204. The ends are respectively fixedly connected to the four second umbrella wheels 206. A reduction motor 201 is fixedly connected to one side of the front end face of the base 202. The output end of the reduction motor 201 passes through the front end face of the base 202 and extends into the first groove 204. Inside, and fixedly connected to the end of the second umbrella wheel 206, the engagement of the first umbrella wheel 205 and the second umbrella wheel 206 drives the second shaft 208 to rotate. The first shaft 207 rotates synchronously, thereby driving the two rearmost second umbrella wheels 206 to rotate. The two rearmost second umbrella wheels 206 drive the two rearmost first umbrella wheels 205 to rotate, thereby driving the two rearmost first lead screws 210 to rotate synchronously. The two rearmost sliders 203 then move synchronously towards the center position, thereby adjusting the distance between the two clamping plates 4 to adapt to the width of the express cabinet.

[0044] Working principle: The second hydraulic cylinder 601 is activated, pushing the limit rod 603 to rise along the guide seat 602 to form a physical block. By controlling the extension of the first hydraulic cylinder 302, the lifting plate 307 is pushed to move upward along the guide rod 306, so that the mounting frame 313 and the conveyor belt 315 pass through the channel 303 and rise, lifting the express cabinet. At this time, the servo motor 308 is activated, driving the connecting rod 311 to rotate through the first pulley 309, the transmission belt 312 and the second pulley 310, and then the rotating shaft 304 and the conveyor belt 315 rotate. This is a commonly used technical solution in existing belt conveyors, which will not be elaborated on here. The express cabinet is conveyed forward until it hits the limit rod 603 to complete the precise positioning. Then the first hydraulic cylinder 302 is reset, the lifting plate 307 is lowered, and the express cabinet is smoothly placed on the welding conveyor platform 1. Then the drive component 2 is activated again.

[0045] First, the reduction motor 201 starts, driving the second parasol wheel 206 at the front to rotate, which in turn drives the first parasol wheel 205 meshing with it to rotate, causing the first lead screw 210 to rotate and drive the slider 203 to move on the base 202. At this time, the connecting rod 311 drives another first lead screw 210 at the front to rotate, driving the slider 203 to move on the base 202. Through the meshing of the first parasol wheel 205 and the second parasol wheel 206, the second shaft 208 is driven to rotate. The first shaft 207 rotates synchronously, thereby driving the two second parasol wheels 206 at the rear to rotate. The two second parasol wheels 206 at the rear drive the two first parasol wheels 205 at the rear to rotate, thereby driving the two first lead screws 210 at the rear to rotate synchronously. The slider 203 then moves synchronously towards the center position, thereby adjusting the distance between the two clamping plates 4 to adapt to the width of the express cabinet. The threads of the two first lead screws 210 at the front are set in opposite directions, and the outer threads of the two first lead screws 210 at the rear are also set in opposite directions. Due to the reversal of the first umbrella wheel 205 and the second umbrella wheel 206 used for assembly, the first lead screws 210 at the front and the first lead screws 210 at the rear turn in opposite directions. Therefore, the outer threads of the two diagonally opposite first lead screws 210 are set in the same way, while the outer threads of the corresponding first lead screws 210 at the front and rear are set in opposite directions. The outer threads of the two corresponding first lead screws 210 at the lateral direction are set in opposite directions, which makes it easy to ensure that the two clamping plates 4 move synchronously towards the center position and towards both sides.

[0046] Simultaneously, the two drive motors 504 start synchronously, driving the second lead screw 505 to rotate, causing the clamping plate 503 to move along the third groove 502. Together with the fixing plate 501, they press against the express cabinet from the front and rear, further applying a pushing force to the rear end of the express cabinet, achieving all-round rigid fixation of the cabinet body in the front, back, left, right and bottom. After the system is powered on, the PLC sends a return-to-zero command to the two drive motors 504 at the same time. The two drive motors 504 drive the second lead screw 505 to rotate until the clamping plate 503 triggers the limit sensor at the rear. The system uses this as the zero point, clearing the previous accumulated errors and ensuring that the initial position is absolutely consistent. When the express cabinet is accurately positioned on the welding conveyor platform 1, the PLC sends a start signal to the two drivers at the same time. In order to achieve nanosecond-level synchronization, a hardware handshake signal is used, with the high-speed pulse output of the PLC connected in parallel, or the synchronous message broadcast of the industrial bus, to ensure that the time difference between the two drive motors 504 receiving the command is minimal, avoiding asynchronous starting due to signal delay. This is a commonly used technical solution in existing synchronous control systems, which will not be elaborated on here.

[0047] The spot welding equipment can perform automated welding on the bottom of the express cabinet. After the welding is completed, the clamping and fixing mechanisms are reset in sequence, and the lifting component 3 is raised again to output the finished product to the next station, thus completing the entire automated spot welding and conveying process.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spot welding conveyor platform for facilitating automatic welding of express delivery locker bodies, comprising a welding conveyor platform (1), characterized in that: The welding conveying platform (1) has a lifting component (3) at its center, a limiting structure (6) at the front of the lifting component (3), a driving component (2) on the outer wall of the welding conveying platform (1), and clamping plates (4) at both sides of the center of the upper end face of the welding conveying platform (1). The upper end faces of the two clamping plates (4) are equipped with positioning plates (5) at the rear. The lifting component (3) includes a base plate (301) and a channel (303). A first hydraulic cylinder (302) is fixedly connected to the center of the upper end face of the base plate (301). A lifting plate (307) is fixedly connected to the output end of the first hydraulic cylinder (302). The channel (303) is opened on both sides of the center of the upper end face of the welding conveying platform (1). A mounting frame (313) is fixedly connected to the upper end face of the lifting plate (307) inside the two base plates (301). A mounting plate (314) is fixedly connected inside the two mounting frames (313). Multiple rotating shafts (304) are arranged in a front-to-back arrangement inside the upper part of the two mounting plates (314). Two conveyor belts (315) are on the outside of the multiple rotating shafts (304).

2. The spot welding conveyor platform for facilitating automatic welding of express cabinet bodies according to claim 1, characterized in that: A connecting rod (311) is provided between the two mounting brackets (313) at the front. The two ends of the connecting rod (311) pass through the two mounting brackets (313) and the two mounting plates (314) respectively and are connected to the interior of the two mounting plates (314). The ends are fixedly connected to the two rotating shafts (304) at the front. A servo motor (308) is fixedly connected to the center of the upper end face of the lifting plate (307) at the front. A first pulley (309) is fixedly connected to the output end of the servo motor (308). A second pulley (310) is fixedly sleeved on the outer wall of the connecting rod (311) at the upper end of the first pulley (309). A transmission belt (312) is sleeved on the outer side of the second pulley (310) and the first pulley (309).

3. The spot welding conveyor platform for facilitating automatic welding of express cabinet bodies according to claim 1, characterized in that: A base (305) is fixedly connected to each of the four opposite corners of the upper surface of the base plate (301). A guide rod (306) is fixedly connected to the lower surface of the lifting plate (307) on the upper surface of each of the four bases (305). The lower ends of the four guide rods (306) pass through the upper surface of the four bases (305) and extend into the interior of the four bases (305).

4. The spot welding conveyor platform for facilitating automatic welding of express cabinet bodies according to claim 1, characterized in that: Taking one of the positioning plates (5) as an example, the positioning plate (5) includes a fixing plate (501). A third groove (502) is provided at one end of the lower end face of the fixing plate (501) near the center of the welding conveying platform (1). A drive motor (504) is fixedly connected to the rear end face of the fixing plate (501) at the rear end of the third groove (502). The output end of the drive motor (504) passes through the rear end face of the fixing plate (501) and extends into the third groove (502). A second lead screw (505) is fixedly connected to the end of the drive motor (504). A clamping plate (503) is threaded on the outer wall of the second lead screw (505).

5. A spot welding conveyor platform for facilitating automatic welding of express delivery locker bodies according to claim 1, characterized in that: The limiting structure (6) includes a second hydraulic cylinder (601), which is fixedly connected to the front of the upper end face of the base plate (301). The output end of the second hydraulic cylinder (601) is fixedly connected to a limiting rod (603). The limiting rod (603) passes through the upper inner wall of the welding conveying platform (1) and extends to the upper end of the welding conveying platform (1). A guide seat (602) is fixedly connected to the upper inner wall of the welding conveying platform (1) located on the outer wall of the limiting rod (603).

6. The spot welding conveyor platform for facilitating automatic welding of express cabinet bodies according to claim 1, characterized in that: The driving component (2) includes four bases (202), which are fixedly connected to the upper sides of the front and rear end faces of the welding conveying platform (1). Each of the four bases (202) has a first groove (204) at one of the four diagonal positions near the welding conveying platform (1). Each of the four first grooves (204) contains a first parapet wheel (205) and a second parapet wheel (206) that mesh with each other. A second groove (209) is formed on the lower end face of each of the four bases (202) on one side of each of the four first grooves (204). One end of each of the four first parapet wheels (205) has a shaft that passes through one of the four first parapet wheels (206). The inner wall of a groove (204) leads to the interior of four second grooves (209), and the ends of each groove are fixedly connected to a first lead screw (210). A third shaft (211) is provided between the two first lead screws (210) at the front. The two ends of the third shaft (211) respectively rotate through the side wall of the two bases (202) at the front and lead to the interior of the two second grooves (209) at the front. The ends of the shafts are fixedly connected to the two first lead screws (210) respectively. The outer walls of the four first lead screws (210) are threaded with sliders (203). The four sliders (203) are fixedly connected to the two clamping plates (4) respectively.

7. A spot welding conveyor platform for facilitating automatic welding of express delivery locker bodies according to claim 6, characterized in that: A first shaft (207) and a second shaft (208) are respectively provided between the two bases (202) at the front and the two bases (202) at the rear. The front and rear ends of the first shaft (207) and the second shaft (208) pass through the rear end face of the two bases (202) at the front and the front end face of the two bases (202) at the rear, respectively, and lead to the interior of the four first grooves (204). The ends are fixedly connected to the four second parachute wheels (206). A reduction motor (201) is fixedly connected to one side of the front end face of the base (202) at the front. The output end of the reduction motor (201) passes through the front end face of the base (202) and leads to the interior of the first groove (204). The end is fixedly connected to the second parachute wheel (206).

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