Full-automatic oil tank chuck rivet riveting equipment

Abstract

The utility model discloses a full-automatic oil tank chuck rivet riveting device in the field of oil tank chuck production, which comprises a machine base provided with a multi-station rotary stock bin used for placing a chuck to be processed. A servo rotary lifting platform for positioning a chuck to be machined, a servo rotary positioning platform for rotating and riveting the circumferential position of a machined chuck finished product and a riveting machine corresponding to the servo rotary lifting platform are arranged on the machine base and correspond to the multi-station rotary stock bin respectively; a robot is arranged on the machine base and corresponds to the servo rotating lifting platform and the servo rotating positioning platform, a grabbing mechanism is arranged on the robot, and a conveying belt is arranged corresponding to the servo rotating positioning platform. According to the automatic riveting machine, the function of riveting rivets on the chuck in a full-automatic mode is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of fuel tank chuck manufacturing process, and specifically relates to a fully automatic fuel tank chuck riveting equipment. Background Technology

[0002] Fuel tank chucks are installed on automotive fuel tanks. The chuck body is formed by stamping steel coils, but some chuck products require bolts and rivets to connect to the fuel pump. In this case, the bolts and rivets need to be pressed and riveted onto the chuck body.

[0003] In existing technology, when riveting bolts and rivets onto a chuck, the equipment used is a riveting machine. Workers hold the chuck body and rivet the bolts and rivets onto the chuck using the riveting machine. The problem is that during the riveting process, rivets may be missed. This necessitates workers to inspect the riveted chuck to ensure all rivets are present, requiring more manpower. Even then, there is still a possibility of products with missing rivets being produced. The riveting speed is related to the worker's skill level. The worker must hold the chuck and riveting fixture relatively flush and in close contact; otherwise, the riveting machine will trigger a low conductivity alarm. Utility Model Content

[0004] The purpose of this invention is to provide a fully automatic oil tank chuck riveting device, which realizes the function of riveting rivets on the chuck automatically. The worker only needs to add the chuck body to the hopper and collect the riveted products on the receiving conveyor belt. This device also has a rivet detection function to prevent rivets from being missed, reducing the skill requirements of workers and reducing the workload.

[0005] The purpose of this utility model is achieved as follows: A fully automatic oil tank chuck riveting device includes a machine base, on which a multi-station rotary hopper for placing the chuck to be processed is provided. Corresponding to the multi-station rotary hopper, a servo rotary lifting platform for positioning the chuck to be processed and a servo rotary positioning platform for rotating and riveting the finished chuck are respectively provided on the machine base. A riveting machine is provided corresponding to the servo rotary lifting platform. A robot is provided on the machine base corresponding to the servo rotary lifting platform and the servo rotary positioning platform. The robot is equipped with a gripping mechanism. A conveyor belt is provided corresponding to the servo rotary positioning platform.

[0006] This utility model employs a six-station rotary hopper for feeding, a six-axis robot with two four-jaw cylinders for handling via a gripping mechanism, a servo rotary lifting platform for riveting, a servo rotary positioning platform, a double-row chain conveyor belt, and a riveting machine to achieve fully automatic chuck riveting. Compared with existing technologies, the advantages of this utility model are: the biggest advantage is the saving of labor costs and the reduction of operator skill requirements; workers only need to handle feeding and unloading. Furthermore, the equipment has a hopper for feeding and a conveyor belt for unloading, requiring workers to only perform feeding and unloading periodically. Product quality is improved, eliminating the problem of misaligned rivets caused by manual riveting and preventing rivet omissions. Production efficiency is increased, with more products riveted daily than by manual labor. This fully automatic oil tank chuck riveting equipment is used in the production process of riveting rivets onto oil tank chucks.

[0007] As a further improvement of this utility model, the chuck is annular, and its outer periphery is provided with several flanges spaced apart circumferentially. Each flange has a rivet hole. The main body of the annular chuck is provided with several arc-shaped positioning grooves spaced apart circumferentially. The outer edge of the annular chuck is provided with several limiting grooves spaced apart circumferentially. The inner periphery of the annular chuck is surrounded by a downwardly extending lower convex edge. The positioning groove consists of two parts with different radial widths.

[0008] As a further improvement of this utility model, the multi-station rotary hopper includes a cam divider. A circular turntable is provided at the output end of the cam divider. Several positioning hoppers are evenly distributed along the circumference of the turntable. Each positioning hopper includes a base plate with at least four vertical positioning rods vertically arranged on it. Each positioning rod surrounds the outer circumference of the chuck, and each positioning rod corresponds to a limiting groove. The positioning rods pass through the corresponding limiting grooves. A clearance hole is provided in the center of the base plate corresponding to the chuck, and a lower protruding edge extends into the clearance hole, the height of which is less than the depth of the clearance hole. Six positioning hoppers are provided. The chuck bodies are placed orderly into the positioning hoppers. The turntable rotates to a designated station, and the robot removes the chuck bodies one by one from the positioning hoppers and places them on a servo rotary lifting platform for positioning.

[0009] As a further improvement of this utility model, the servo rotary lifting platform includes a rectangular base plate mounted on a base. The base plate has an adjustable rectangular adjustment base with several mounting slots for fasteners to pass through. A support is provided around each of the base plate's four sides, and each support is threaded with a clamping screw. A support column is vertically installed at each of the four corners of the adjustment base, and the upper end of each support column is fixed to a horizontal fixed plate. Four guide rods arranged in a rectangular array are vertically installed on the fixed plate, and guide sleeves are movably connected to the guide rods. The upper end of each guide sleeve is fixed to the lifting plate. A central section of the fixed plate is provided with… A vertical lifting cylinder has its piston rod extended to connect to a lifting plate. A rotating platform is mounted on the lifting plate, and a spinning cylinder is correspondingly located on both the left and right sides of the rotating platform. Each spinning cylinder has a pressure block at its working end. The rotating platform has several circumferentially spaced positioning protrusions. When the robot picks up the annular chuck and places it on the rotating platform, each positioning protrusion passes through its corresponding positioning groove. A circular clearance hole is located in the center of the rotating platform, and the lower protruding edge of the chuck extends downward into the clearance hole. Several laser sensors are installed on the lifting plate corresponding to the chuck on the rotating platform. The chuck body is placed on the rotating platform by the robot. A servo motor drives the rotating platform to rotate the chuck body to a specified angle. The lifting cylinder descends, and the spinning cylinder rotates and presses down, aligning the chuck's rivet holes with the riveting machine fixture. The riveting machine then presses the bolts and rivets into the chuck's rivet holes to complete the riveting process. The lifting cylinder rises, the spinning cylinder rotates and rises, and a laser sensor detects for mis-rivets. If no rivets are found, the robot descends again for another riveting attempt. If the laser sensor detects no rivets after two attempts, the product is classified as an NG (not rated) product, and the robot places it directly into the NG product box. If a rivet is detected, the servo motor drives the rotating platform, which in turn moves the chuck body to the next riveting position. This process is repeated until all rivets on the chuck body are riveted. The robot then removes the product.

[0010] As a further improvement of this utility model, the gripping mechanism includes a transverse mounting plate disposed at the end of the robot. The robot is a six-axis robot. A set of gripping components is disposed on both the left and right sides of the mounting plate. Each gripping component includes a four-jaw cylinder mounted on the mounting plate. Each moving jaw of the four-jaw cylinder is equipped with a moving plate, and an arc-shaped clamping block is fixed on the moving plate. The four clamping blocks are evenly distributed circumferentially and correspond to the outer periphery of the chuck. One set of gripping components is responsible for gripping the chuck products to be riveted, picking up the chuck body one by one from the turntable hopper and placing it on the riveting rotary platform. The other set of gripping components is responsible for gripping the finished riveted chucks, picking them up from the riveting platform, transferring them to the servo rotary positioning platform, and then to the receiving conveyor belt.

[0011] As a further improvement of this utility model, the servo rotary positioning platform includes at least four columns mounted on a base. Each column has a rotary platform II mounted on its upper end. The rotary platform II has at least two symmetrically positioned protrusions. When the robot picks up the annular chuck and places it on the rotary platform II, each positioning protrusion II engages and passes through its corresponding positioning groove. The circular rotary platform II has a circular clearance hole in its center, and the lower protruding edge of the chuck extends downward into the clearance hole. The robot places the finished product on the servo rotary positioning platform, and the servo motor drives the rotary platform II to rotate the chuck product by a certain angle. The robot then picks up the chuck product again. Because rivets are riveted onto the chuck, two chuck products can only be tightly stacked together if they are offset relative to each other by a certain angle.

[0012] As a further improvement of this utility model, the conveyor belt is a double-row chain plate conveyor belt. A support frame is provided on the lower side of the double-row chain plate conveyor belt. Two rows of positioning components are arranged sequentially along the length direction of the double-row chain plate conveyor belt. Each group of positioning components includes four arc-shaped positioning blocks evenly distributed circumferentially. The two corresponding positioning blocks are located on the chain plates of the two double-row chain plate conveyor belts that are spaced apart from each other, and the two corresponding positioning blocks are located on the middle chain plate. A set of through-beam sensors is provided at the output end of the double-row chain plate conveyor belt. The robot takes out the riveted chuck from the servo rotary positioning platform and places it on the positioning components on the double-row chain plate conveyor belt. It places 20 chucks one by one into a row, and then places them on the adjacent workstation. When both sides are filled with 20 chucks, the motor drives the chain plate conveyor belt to move backward one workstation. The robot continues to place products on the two parallel workstations until the through-beam sensor of the last workstation detects a product, and the equipment alarms to remind the worker to collect the materials.

[0013] As a further improvement of this utility model, an NG product box is placed on the base. The NG product box is used to hold NG chuck products. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of a multi-station rotating hopper.

[0016] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0017] Figure 4 This is a schematic diagram of the structure of a servo-driven rotary lifting platform.

[0018] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0019] Figure 6This is a schematic diagram of the robot's structure.

[0020] Figure 7 for Figure 6 A magnified view of a portion of the image.

[0021] Figure 8 This is a schematic diagram of the servo rotary positioning platform.

[0022] Figure 9 This is a schematic diagram of the conveyor belt structure.

[0023] The components include: 1. Machine base; 2. Multi-station rotary hopper; 201. Cam divider; 202. Turntable; 203. Positioning hopper; 203a. Base plate; 203b. Positioning rod; 203c. Clearance hole; 3. Chuck; 3a. Flange; 3b. Positioning groove; 3c. Limiting groove; 3d. Lower convex edge; 4. Servo rotary lifting platform; 401. Base plate; 402. Adjusting base; 403. Mounting groove; 404. Support; 405. Clamping screw; 406. Support column; 407. Fixing plate; 408. Guide rod; 408a. Guide sleeve. 409 Lifting plate, 410 Lifting cylinder, 411 Rotary platform one, 411a Positioning protrusion one, 412 Spinning cylinder, 412a Pressing block, 413 Laser sensor, 5 Servo rotary positioning platform, 501 Column, 502 Rotary platform two, 503 Positioning protrusion two, 6 Riveting press, 7 Robot, 8 Conveyor belt, 801 Support frame, 802 Positioning block, 803 Chain plate, 9 Rivet hole, 10 Clearance hole, 11 Mounting plate, 12 Four-jaw cylinder, 13 Moving plate, 14 Clamping block, 15 Through-beam sensor, 16 NG Product box. Detailed Implementation

[0024] like Figure 1-9As shown, this is a fully automatic oil tank chuck riveting equipment, including a base 1. The base 1 is equipped with a multi-station rotary hopper 2 for placing the chuck 3 to be processed. Corresponding to the multi-station rotary hopper 2, the base 1 is equipped with a servo rotary lifting platform 4 for positioning the chuck 3 to be processed and a servo rotary positioning platform 5 for rotating and riveting the finished chuck 3 to its circumferential position. A riveting machine 6 is provided corresponding to the servo rotary lifting platform 4. A robot 7 is provided on the base 1 corresponding to the servo rotary lifting platform 4 and the servo rotary positioning platform 5. The robot 7 is equipped with a gripping mechanism and a conveyor belt 8 is provided corresponding to the servo rotary positioning platform 5. The chuck 3 is annular. Its outer periphery has several circumferentially spaced flanges 3a, each with a rivet hole 9. The main body of the annular chuck 3 has several circumferentially spaced arc-shaped positioning grooves 3b. The outer edge of the annular chuck 3 has several circumferentially spaced limiting grooves 3c. The inner periphery of the annular chuck 3 has a downwardly extending lower convex edge 3d. Each positioning groove 3b consists of two unequal radial widths. An NG product box 16 is placed on the base 1. The NG product box 16 is used to hold the NG chuck 3 products.

[0025] The multi-station rotary hopper 2 includes a cam divider 201. The output end of the cam divider 201 is provided with a circular turntable 202. Several positioning hoppers 203 are evenly distributed along the circumference of the turntable 202. The positioning hopper 203 includes a base plate 203a. At least four vertical positioning rods 203b are vertically arranged on the base plate 203a. Each positioning rod 203b surrounds the outer periphery of the chuck 3. Each positioning rod 203b is correspondingly arranged with each limiting groove 3c. The positioning rod 203b passes through the corresponding limiting groove 3c. An clearance hole 10203c is opened in the middle of the base plate 203a corresponding to the chuck 3. The lower protruding edge 3d extends into the clearance hole 203c. The height of the lower protruding edge 3d is less than the depth of the clearance hole 203c. There are six positioning bins 203. The main body of the chuck 3 is placed in the positioning bins 203 in an orderly manner. The turntable 202 rotates to the designated work station. The robot 7 takes out the main body of the chuck 3 from the positioning bins 203 one by one and places it on the servo rotary lifting platform 4 for positioning.

[0026] The servo rotary lifting platform 4 includes a rectangular base plate 401 mounted on a base 1. An adjustable rectangular adjustment base 402 is provided on the base plate 401. The adjustment base 402 has several mounting slots 403 for fasteners to pass through. A support 404 is provided around the base plate 401, and a clamping screw 405 is threaded onto each support 404. A support column 406 is vertically installed at each of the four corners of the adjustment base 402. The upper end of each support column 406 is fixed to a horizontal fixed plate 407. Four guide rods 408 arranged in a rectangular array are vertically installed on the fixed plate 407. Guide sleeves 408a are movably connected to the guide rods 408, and the upper end of each guide sleeve 408a is fixed to a lifting plate 409. A vertical lifting cylinder 41 is located in the center of the fixed plate 407. 0. The piston rod of the lifting cylinder 410 extends and is connected to the lifting plate 409. A rotating platform 411 is installed on the lifting plate 409. A spinning cylinder 412 is provided on both the left and right sides of the rotating platform 411. A pressure block 412a is provided at the working end of the spinning cylinder 412. Several positioning protrusions 411a are provided on the rotating platform 411 at intervals along the circumference. When the robot 7 picks up the annular chuck 3 and places it on the rotating platform 411, each positioning protrusion 411a passes through the corresponding positioning groove 3b. A circular clearance hole 10 is provided in the middle of the circular rotating platform 411. The lower protruding edge 3d of the chuck 3 extends downward into the clearance hole 10. Several laser sensors 413 are provided on the lifting plate 409 corresponding to the chuck 3 on the rotating platform 411. The chuck 3 body is placed on the rotating platform 411 by the robot 7. The servo motor drives the rotating platform 411 to rotate the chuck 3 body to a designated angle. The lifting cylinder 410 descends, and the spinning cylinder 412 rotates and presses down. The rivet hole 9 of the chuck 3 aligns with the tooling of the riveting machine 6. The riveting machine 6 works to press the bolts and rivets into the rivet holes 9 of the chuck 3 to complete the riveting. The lifting cylinder 410 rises, and the spinning cylinder 412 rotates and rises. The laser sensor 413 detects whether there are any erroneous rivets. If there are no rivets, the machine will descend again to rivet once more. If the laser sensor 413 does not detect any rivets twice, the product is judged as an NG product, and the robot will place the product directly into the NG product box 16. If a rivet is detected, the servo motor drives the rotating platform 411 to rotate the chuck 3 body to the next riveting position. The above actions are repeated to rivet the bolts and rivets until the entire chuck 3 body is riveted. The robot 7 then removes the product.

[0027] The gripping mechanism includes a transverse mounting plate 11 at the end of the robot 7. The robot 7 is a six-axis robot. A set of gripping components is provided on both the left and right sides of the mounting plate 11. Each gripping component includes a four-jaw cylinder 12 mounted on the mounting plate 11. Each moving jaw of the four-jaw cylinder 12 is equipped with a moving plate 13, and an arc-shaped clamping block 14 is fixed on the moving plate 13. The four clamping blocks 14 are evenly distributed circumferentially and correspond to the outer periphery of the chuck 3. One set of gripping components is responsible for gripping the chuck 3 products to be riveted, picking up the chuck 3 bodies one by one from the material bin of the turntable 202 and placing them on the riveting rotary platform. The other set of gripping components is responsible for gripping the finished riveted chuck 3 products, picking them up from the riveting platform, transferring them to the servo rotary positioning platform 5, and then to the receiving conveyor belt 8.

[0028] The servo rotary positioning platform 5 includes at least four columns 501 mounted on the base 1. Each column 501 has a rotary platform 502 mounted on its upper end. The rotary platform 502 has at least two symmetrical positioning protrusions 503. When the robot 7 picks up the annular chuck 3 and places it on the rotary platform 502, each positioning protrusion 503 engages and passes through its corresponding positioning groove 3b. The circular rotary platform 502 has a circular clearance hole 10 in its center, and the lower protruding edge 3d of the chuck 3 extends downward into the clearance hole 10. The rotary platform 502 operates on the same principle as the rotary platform 411. The robot 7 places the finished product onto the servo rotary positioning platform 5, and the servo motor drives the rotary platform 502 to rotate the chuck 3 by a certain angle. The robot 7 then picks up the chuck 3 again. Because rivets are riveted onto the chuck 3, two chuck 3 products can only be tightly stacked together if they are offset by a certain angle.

[0029] The conveyor belt 8 is a double-row chain plate 803 conveyor belt 8. A support frame 801 is provided on the lower side of the double-row chain plate 803 conveyor belt 8. Two rows of positioning components are arranged sequentially along the length direction on the double-row chain plate 803 conveyor belt 8. Each group of positioning components includes four arc-shaped positioning blocks 802 evenly distributed along the circumference. The two positioning blocks 802 corresponding to the front and rear are respectively located on the chain plates 803 of the two double-row chain plate 803 conveyor belt 8 with a gap between them. The two positioning blocks 802 corresponding to the left and right are located on the middle chain plate 803. A set of through-beam sensors 15 is provided at the output end of the double-row chain plate 803 conveyor belt 8. Robot 7 takes the riveted chuck 3 from the servo rotary positioning platform 5 and places it on the positioning component on the double-row chain plate 803 conveyor belt 8. It places 20 chucks one by one into a row, and then places them on the next station. Once both sides are filled with 20 chucks, the motor drives the chain plate 803 conveyor belt 8 to move backward one station. Robot 7 continues to place products on the two parallel stations until the photoelectric sensor 15 of the last station detects a product, and the equipment alarms to remind the worker to come and collect the materials.

[0030] This utility model employs a six-station rotary hopper for feeding, a six-axis robot 7 equipped with two four-jaw cylinders 12 for handling via a gripping mechanism, a servo rotary lifting platform 4 for riveting, a servo rotary positioning platform 5, a double-row chain conveyor belt 8, and a riveting machine 6 to achieve the fully automatic chuck 3 for riveting rivets. The workflow of this equipment is as follows: Workers arrange the product chucks 3 in an orderly row into the six-station rotary hopper. Robot 7 uses a gripping mechanism to pick up the chucks 3 and place them onto the servo rotary lifting platform 4 for riveting. The servo rotary lifting platform 4 then works in conjunction with the riveting machine 6 to press bolts and rivets onto the chucks 3. During the riveting process, another chuck 3 is picked up and left to wait. After the chucks 3 are riveted, Robot 7 uses another gripping mechanism to lift the finished product from the servo rotary lifting platform 4 and place another chuck 3 onto it for riveting. During riveting, Robot 7 places the finished product onto the servo rotary positioning platform 5, rotates it at a certain angle, and then picks it up onto the double-row chain conveyor belt 803. The six-axis robot 7 then uses its gripping mechanism to pick up another product from the six-station rotary hopper. This cycle repeats continuously. Workers are only responsible for loading the chucks 3 into the hopper and collecting the entire row of finished chucks 3 from the receiving conveyor belt 8.

[0031] After the equipment is started, the feeding turntable 202 rotates to the material picking station of robot 7 and detects that there is a product. Robot 7 receives a signal to grab the product and then places it on the riveting rotating platform 411. After the rotating platform 411 rotates to the correct position, the lifting cylinder lowers to the correct position and the equipment sends a pressing signal to the riveting machine 6 to start pressing the rivets. After all the rivets are pressed, robot 7 receives a signal to grab the product, places it on the rotating platform 502, rotates it at a certain angle, grabs the product again, and places it on the receiving double-row chain conveyor belt 8.

[0032] This equipment primarily handles a product handling process. The key process parameters are the riveting pressure parameters of the riveting machine itself and their relation to product quality. The set of process parameters varies depending on the product shape; the rotating riveting platform requires specific rotation angle parameters, which are related to the product's riveting pass rate. This equipment mainly handles the handling of a product onto the riveting platform to rivet it with the riveting machine 6, and then arranges the products in a row onto the receiving conveyor belt 8. The biggest advantage of this invention is the saving of labor costs and the reduction of worker skill requirements. Workers only need to handle loading and unloading. Furthermore, this equipment has a hopper for loading and a conveyor belt 8 for unloading, requiring workers to only perform loading and unloading at regular intervals. Product quality is improved, preventing issues like misaligned products during manual riveting leading to crooked rivets or missing rivets. Production efficiency is increased, with more products riveted daily than manually. This fully automatic oil tank chuck 3 riveting equipment is used in the production process of riveting rivets onto the oil tank chuck 3.

[0033] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A fully automatic fuel tank chuck riveting device, characterized in that, The system includes a base, on which a multi-station rotary hopper for placing chucks to be processed is provided. Corresponding to the multi-station rotary hopper, the base is equipped with a servo rotary lifting platform for positioning the chucks to be processed and a servo rotary positioning platform for positioning the circumferential position of the finished chucks after rotary riveting. A riveting machine is provided corresponding to the servo rotary lifting platform. A robot is provided on the base corresponding to the servo rotary lifting platform and the servo rotary positioning platform. The robot is equipped with a gripping mechanism. A conveyor belt is provided corresponding to the servo rotary positioning platform.

2. The fully automatic fuel tank chuck riveting device according to claim 1, characterized in that, The chuck is annular, and the outer periphery of the annular chuck is provided with several flanges that are spaced apart along the circumference. Each flange is provided with a rivet hole. The main body of the annular chuck is provided with several arc-shaped positioning grooves that are spaced apart along the circumference. The outer periphery of the annular chuck is provided with several limiting grooves that are spaced apart along the circumference. The inner periphery of the annular chuck is provided with a downwardly extending lower convex edge.

3. The fully automatic fuel tank chuck riveting device according to claim 2, characterized in that, The multi-station rotary hopper includes a cam divider. The output end of the cam divider is equipped with a circular turntable. Several positioning hoppers are evenly distributed along the circumference of the turntable. Each positioning hopper includes a base plate. At least four vertical positioning rods are vertically arranged on the base plate. Each positioning rod surrounds the outer periphery of the chuck. Each positioning rod corresponds to a limiting groove. The positioning rod passes through the corresponding limiting groove. An avoidance hole is opened in the middle of the base plate corresponding to the chuck. The lower convex edge extends into the avoidance hole. The height of the lower convex edge is less than the depth of the avoidance hole.

4. A fully automatic fuel tank chuck riveting device according to claim 2 or 3, characterized in that, The servo rotary lifting platform includes a rectangular base plate mounted on a base. The base plate has an adjustable rectangular adjustment base with several mounting slots for fasteners to pass through. A support is provided around each of the base plate's four sides, and each support is threaded with a clamping screw. A support column is vertically installed at each of the four corners of the adjustment base, and the upper end of each support column is fixed to a horizontal fixed plate. Four guide rods arranged in a rectangular array are vertically installed on the fixed plate, and guide sleeves are movably connected to the guide rods. The upper end of each guide sleeve is fixed to the lifting plate. A vertical lifting cylinder is located in the center of the fixed plate. The piston rod of the lifting cylinder extends to the lifting plate. A rotating platform is mounted on the lifting plate. A spinning cylinder is correspondingly arranged on both the left and right sides of the rotating platform. The working end of the spinning cylinder is equipped with a pressure block. Several positioning protrusions are arranged on the rotating platform at intervals along the circumference. When the robot picks up the annular chuck and places it on the rotating platform, each positioning protrusion passes through the corresponding positioning groove. A circular clearance hole is provided in the middle of the circular rotating platform. The lower convex edge of the chuck extends downward into the clearance hole. Several laser sensors are arranged on the lifting plate corresponding to the chuck on the rotating platform.

5. A fully automatic fuel tank chuck riveting device according to claim 2 or 3, characterized in that, The gripping mechanism includes a horizontal mounting plate at the end of the robot. The robot is a six-axis robot. A set of gripping components is provided on both the left and right sides of the mounting plate. The gripping components include four-jaw cylinders mounted on the mounting plate. Each moving jaw of the four-jaw cylinder is provided with a moving plate. An arc-shaped clamping block is fixed on the moving plate. The four clamping blocks are evenly distributed circumferentially and are corresponding to the outer periphery of the chuck.

6. The fully automatic fuel tank chuck riveting device according to claim 5, characterized in that, The servo rotary positioning platform includes at least four columns mounted on the base. Each column has a rotary platform II mounted on its upper end. The rotary platform II has at least two symmetrical positioning protrusions II. When the robot picks up the annular chuck and places it on the rotary platform II, each positioning protrusion II cooperates to pass through the corresponding positioning groove. The circular rotary platform II has a circular clearance hole in the middle. The lower protruding edge of the chuck cooperates to extend downward into the clearance hole.

7. The fully automatic fuel tank chuck riveting device according to claim 5, characterized in that, The conveyor belt is a double-row chain conveyor belt. A support frame is provided on the lower side of the double-row chain conveyor belt. Two rows of positioning components are arranged sequentially along the length of the double-row chain conveyor belt. Each group of positioning components includes four arc-shaped positioning blocks evenly distributed circumferentially. The two positioning blocks corresponding to the front and rear are located on the chain plates of the two double-row chain conveyor belts that are spaced apart from each other, and the two positioning blocks corresponding to the left and right are located on the middle chain plate. A set of through-beam sensors is provided at the output end of the double-row chain conveyor belt.

8. A fully automatic fuel tank chuck riveting device according to claim 2 or 3, characterized in that, The base is equipped with an NG product box.

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