Welding device for seat five-star foot production

Abstract

The invention discloses a welding device for seat five-star foot production, the welding device is applied to the technical field of seat five-star foot welding, the welding device comprises a workbench, a welding robot, a positioning mechanism, a cleaning mechanism, a detection mechanism and a five-star foot, the positioning mechanism, the cleaning mechanism and the detection mechanism are all arranged on the workbench, and the five-star foot comprises a center disc and five supporting feet; the workbench comprises a rack and a disc, a rotating table is fixed to the top of the rack, the disc is fixed to the top of the rotating table, a plurality of arc-shaped sliding grooves are formed in the disc in the circumferential direction at equal intervals, and a limiting hole is formed in the center of the disc; the positioning mechanism comprises a center positioning assembly, a plurality of limiting assemblies, a fixing ring and a sliding rail, each limiting assembly comprises a supporting part and a positioning detection part, and each positioning detection part comprises a limiting seat, two sets of pressure sensors, two sets of sliding blocks and two sets of springs; according to the welding device, the welding quality and efficiency of the five-star foot can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding five-star seat feet, in particular to a welding device for producing five-star seat feet. Background Art

[0002] The five-star foot structure includes a center plate and five supporting legs. Each supporting leg is equipped with a corresponding roller, which realizes the sliding effect of the seat. It is generally used to support and fix furniture such as swivel chairs. The existing metal five-star foot structure is mostly formed by alloy welding.

[0003] In the prior art, steel legs are typically welded together into a single piece, and then a connector is welded to the end of the leg for mounting the roller. However, current five-star legs are welded manually, which is not only inefficient but also labor-intensive. Furthermore, because five-star legs are typically welded in one go, errors such as leg misalignment or incorrect angle placement cannot be corrected and must be scrapped. This is especially true when workers are fatigued, which can easily lead to defective welds and reduce the weld pass rate for five-star legs.

[0004] Therefore, it is necessary to provide a welding device for producing five-star chair feet to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for producing five-star chair feet, which can improve the positioning effect of the supporting legs during welding of the five-star feet, thereby improving the welding quality and efficiency of the five-star feet, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A welding device for producing five-star chair feet, comprising a workbench, a welding robot, a positioning mechanism, a cleaning mechanism, a detection mechanism, and a five-star foot, wherein the welding robot is arranged on one side of the workbench, the positioning mechanism, the cleaning mechanism, and the detection mechanism are all arranged on the workbench, and the five-star foot comprises a center plate and five supporting legs; The workbench includes a frame and a disc, a rotating table is fixed on the top of the frame, the disc is fixed on the top of the rotating table, a plurality of arc-shaped sliding grooves are arranged at equal intervals along the circumferential direction of the disc, and a limiting hole is arranged in the center of the disc; The positioning mechanism includes a center positioning component, a plurality of limit components, a fixed ring and a slide rail. The fixed ring is fixed to the bottom of the disc. The center positioning component is arranged in the limit hole. The limit components are arranged in the arc-shaped slide groove and the periphery of the fixed ring. The slide rail is fixed to the outer wall of the fixed ring. The position limiting assembly includes a support portion and a positioning detection portion, wherein the positioning detection portion is fixed to the top of the support portion, and the positioning detection portion includes a position limiting seat, two sets of pressure sensors, two sets of sliders and two sets of springs; The detection mechanism includes a bracket three and a camera.

[0007] According to the above technical solution, the center positioning assembly includes several positioning blocks and a motor 1, the several positioning blocks are arranged in the limiting holes, the bottom of the disc is fixedly connected to a fixing platform and a bracket 1, the bracket 1 is arranged on the periphery of the fixing platform, and the motor 1 is fixed to the bottom of the bracket 1; The fixed platform is provided with a plurality of slide grooves, and the bottom of the positioning block is located in the slide grooves and is slidably connected to the fixed platform; A positioning column is fixedly connected to the center of the fixed platform, a screw is connected to the bearing on the positioning column, a bearing seat is fixedly connected in the slide groove, the screw is connected to the bearing of the bearing seat, the positioning block is connected to the screw, and the output end of the motor is connected to several screws by bevel gear transmission.

[0008] According to the above technical solution, the support portion is arranged on the periphery of the fixing ring, and the positioning detection portion is arranged in the arc-shaped sliding groove; The support part includes a connecting seat, motor 2, motor 3, a rotating platform and a telescopic rod. The connecting seat is arranged in the slide rail and is rotatably connected to the slide rail. Motor 2 is fixed to the top of the connecting seat. The output end of motor 2 passes through the connecting seat and is connected to the gear transmission of the outer wall of the fixed ring.

[0009] According to the above technical solution, the motor three is fixed to the bottom of the connecting base, the rotating platform is arranged on the top of the connecting base and is rotatably connected to the connecting base, and the output end of the motor three passes through the bottom of the connecting base and is connected to the rotating platform gear transmission; The telescopic rod is fixed on the top of the rotating platform.

[0010] According to the above technical solution, the limit seat is fixed to the top of the telescopic rod, and grooves are opened on both sides of the limit seat. The two groups of pressure sensors, two groups of sliders, and two groups of springs are respectively arranged in the grooves on both sides of the limit seat. Each group of springs is provided with a number of springs, one side of the pressure sensor is fixedly connected to the limit seat, the other side of the pressure sensor is fixedly connected to one end of the spring, the other end of the spring is fixedly connected to the slider, and the slider is slidably connected to the limit seat; According to the above technical solution, flanges are fixedly connected to both sides of the top of the limiting seat, and the flanges are located above the slider.

[0011] According to the above technical solution, the cleaning mechanism includes a bracket 2, a motor 4 and a protective cover. The bracket 2 is fixed to the side of the frame, the motor 4 is fixed to the bottom of the bracket 2, the top of the motor 4 is rotatably connected to the connecting frame, and the output end of the motor 4 passes through the bracket 2 and is fixedly connected to the connecting frame.

[0012] According to the above technical solution, the protective cover is located above the disc, the protective cover is fixed to the bottom of the connecting frame, the connecting frame and the protective cover are provided with a plurality of air pipes, the plurality of air pipes pass through the connecting frame and the protective cover, and are fixedly connected to the connecting frame and the protective cover; The air pipe located on the connecting frame is connected to an exhaust pipe, and the exhaust pipe is provided with an exhaust fan and a filter; The air pipes located on both sides of the connecting frame and on the protective cover are connected to the air intake pipe, and the air intake pipe is provided with an air intake fan.

[0013] According to the above technical solution, the bracket three is fixed to the side of the frame, the camera is fixed to the bottom of the bracket three, and the camera is located at the top center of the disc.

[0014] According to the above technical solution, the camera and pressure sensor are electrically connected to a data analysis module, which is used to obtain the data detected by the pressure sensor and the picture of the five-star foot after welding taken by the camera, and then judge the quality of the five-star foot welding based on the obtained data.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention, by providing a positioning mechanism, can accurately clamp and release the center disk, and can also adjust the circumferential position, angle, and height of the limit assembly to position the support leg. Then, by providing a camera and a pressure sensor, the force on the support leg can be monitored in real time during positioning, which facilitates welding strength detection and dynamic balance detection after welding, and realizes the integration of dynamic positioning and detection of the support leg, which is beneficial to improving the positioning effect of the support leg during welding of the five-star leg, thereby improving the welding quality and efficiency of the five-star leg. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic side view of a part of the structure of the present invention; Figure 3 It is a schematic structural diagram of the disc and positioning mechanism of the present invention; Figure 4 It is a schematic cross-sectional view of the center of the disc and positioning mechanism of the present invention; Figure 5 The present invention Figure 4 Schematic diagram of the enlarged structure of area A in the middle; Figure 6 It is a partial structural diagram of the positioning mechanism of the present invention; Figure 7 It is a schematic cross-sectional view of the edge of the disc and positioning mechanism of the present invention; Figure 8 The present invention Figure 7 Schematic diagram of the enlarged structure of the middle B area; Figure 9 The present invention Figure 7 Schematic diagram of the cross-section; Figure 10 The present invention Figure 9 Schematic diagram of the enlarged structure of the middle C area; In the figure: 1. Workbench; 11. Frame; 12. Rotating table; 13. Disc; 14. Arc chute; 15. Limiting hole; 2. Welding robot; 3. Positioning mechanism; 31. Center positioning assembly; 311. Positioning block; 312. Fixed platform; 313. Slide; 314. Positioning column; 315. Screw; 316. Bracket 1; 317. Motor 1; 318. Bearing seat; 32. Limit assembly; 321. Connecting seat; 322. Motor 2; 323. Motor 3; 324. Rotating platform; 325. Telescopic rod; 326. Limit seat; 327. Groove; 328. Pressure sensor; 329. Slider; 3210. Spring; 3211. Flange; 33. Fixing ring; 34. Slide rail; 4. Cleaning mechanism; 41. Bracket 2; 42. Motor 4; 43. Connecting frame; 44. Protective cover; 45. Air pipe; 5. Detection mechanism; 51. Bracket three; 52. Camera. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-10 The present invention provides a technical solution: a welding device for producing five-star chair feet, comprising a workbench 1, a welding robot 2, a positioning mechanism 3, a cleaning mechanism 4, a detection mechanism 5 and a five-star foot. The welding robot 2 is arranged on one side of the workbench 1, and the positioning mechanism 3, the cleaning mechanism 4, and the detection mechanism 5 are all arranged on the workbench 1. The five-star foot includes a center plate and five supporting legs. The welding robot 2 is used to weld the five supporting legs to the center plate to form a five-star foot. The positioning mechanism 3 is used to position the center plate and the five supporting legs. The cleaning mechanism 4 is used to cool the welded supporting legs and absorb welding impurities. The detection mechanism 5 is used to detect the five-star foot formed by welding.

[0019] Specifically, such as Figure 2-Figure 5As shown, the workbench 1 includes a frame 11 and a disc 13. A rotating table 12 is fixed on the top of the frame 11. The disc 13 is fixed on the top of the rotating table 12. A plurality of arc-shaped slide grooves 14 are equidistantly arranged on the disc 13 along the circumferential direction. A limiting hole 15 is provided in the center of the disc 13. The rotating table 12 is used to drive the disc 13 to rotate.

[0020] It should be noted that the rotating table 12 is driven by a motor to rotate.

[0021] Specifically, such as Figure 2-Figure 6 As shown, the positioning mechanism 3 includes a center positioning component 31, several limit components 32, a fixed ring 33 and a slide rail 34. The fixed ring 33 is fixed to the bottom of the disc 13, the center positioning component 31 is arranged in the limit hole 15, the limit component 32 is arranged in the arc-shaped slide groove 14 and the outer periphery of the fixed ring 33, and the slide rail 34 is fixed to the outer wall of the fixed ring 33. The center positioning component 31 is used to position the center disk of the five-star foot, and the limit component 32 is used to position the support legs of the five-star foot. After the rotating table 12 drives the disc 13 to rotate, it can drive the center positioning component 31 and the limit component 32 to rotate synchronously, thereby adjusting the angle and position of the welding of the support legs of the five-star foot.

[0022] It should be noted that the number of the limiting components 32 is the same as the number of the arc-shaped chutes 14. Specifically, the number of the arc-shaped chutes 14 is the same as the number of the welded legs. Figure 3 In the embodiment, there are five groups of arc-shaped slide grooves 14 and limit assemblies 32, which are used to correspond to the number of five groups of supporting legs of the five-star foot.

[0023] Further, such as Figure 3-Figure 6 As shown, the center positioning assembly 31 includes a plurality of positioning blocks 311 and a motor 1 317. The plurality of positioning blocks 311 are set in the limiting holes 15. The bottom of the disc 13 is fixedly connected to a fixing platform 312 and a bracket 1 316. The bracket 1 316 is set on the periphery of the fixing platform 312, and the motor 1 317 is fixed to the bottom of the bracket 1 316. The fixed platform 312 is provided with a plurality of slide grooves 313 , and the bottom of the positioning block 311 is located in the slide grooves 313 and is slidably connected to the fixed platform 312 ; The center of the fixed platform 312 is fixedly connected to a positioning column 314, and a bearing on the positioning column 314 is connected to a screw rod 315, and a bearing seat 318 is fixedly connected in the slide groove 313. The screw rod 315 is connected to the bearing seat 318, and the positioning block 311 is transmission-connected to the screw rod 315. The output end of the motor 317 is connected to the plurality of screw rods 315 by a bevel gear transmission. When the motor 1 317 starts to rotate forward, it drives the plurality of screw rods 315 to synchronously reverse through the bevel gear transmission, so that the positioning block 311 moves toward the side close to the positioning column 314, so that the center disk can be sleeved on the plurality of positioning blocks 311, or the plurality of positioning blocks 311 release the limit on the center of the center disk. Conversely, when the motor 1 317 starts to reverse, it drives the positioning block 311 to move away from the positioning column 314, so that the plurality of positioning blocks 311 limit the center of the center disk, thereby achieving the effect of positioning the center disk.

[0024] It should be noted that the number of the slide slots 313 is the same as the number of the positioning blocks 311. Figure 6 There are three groups in each.

[0025] Further, such as Figure 7-10 As shown, the limiting assembly 32 includes a supporting portion and a positioning detection portion. The positioning detection portion is fixed to the top of the supporting portion, the supporting portion is arranged on the periphery of the fixing ring 33, and the positioning detection portion is arranged in the arc-shaped slide groove 14. The supporting portion is used to adjust the height, angle and position of the positioning detection portion. The positioning detection portion is used to position the support legs to be welded and assist in detecting the welding quality.

[0026] Furthermore, Figure 7-10 As shown, the support portion includes a connecting seat 321, a second motor 322, a third motor 323, a rotating platform 324 and a telescopic rod 325. The connecting seat 321 is arranged in the slide rail 34 and is rotatably connected to the slide rail 34. The second motor 322 is fixed to the top of the connecting seat 321. The output end of the second motor 322 passes through the connecting seat 321 and is connected to the outer wall of the fixed ring 33 through a gear transmission. When the second motor 322 starts to rotate clockwise, it can drive the positioning detection portion to rotate clockwise along the circumferential direction of the fixed ring 33 through the gear transmission connection with the fixed ring 33. Conversely, when the second motor 322 starts to rotate counterclockwise, it can drive the positioning detection portion to rotate counterclockwise along the circumferential direction of the fixed ring 33, thereby adjusting the position of the positioning detection portion in the arc-shaped slide groove 14. The third motor 323 is fixed to the bottom of the connecting base 321, and the rotating platform 324 is arranged on the top of the connecting base 321 and is rotatably connected to the connecting base 321. The output end of the third motor 323 passes through the bottom of the connecting base 321 and is connected to the rotating platform 324 through a gear transmission. When the third motor 323 is started and rotated clockwise, the rotating platform 324 is driven to rotate counterclockwise through the gear transmission, thereby driving the positioning detection part to rotate counterclockwise along the circumferential direction of the fixed ring 33. Conversely, when the third motor 323 is started and rotated counterclockwise, it can drive the positioning detection part to rotate clockwise along the circumferential direction of the fixed ring 33, thereby adjusting the angle of the positioning detection part so that the slider 329 is perpendicular or parallel to the radial direction of the disk 13; The telescopic rod 325 is fixed to the top of the rotating platform 324. When the telescopic rod 325 is extended, it can drive the positioning detection part to rise. When the telescopic rod 325 is retracted, it can drive the positioning detection part to fall, thereby adjusting the height of the positioning detection part.

[0027] It should be noted that the telescopic rod 325 can be electrically telescopic or pneumatically telescopic.

[0028] Furthermore, Figure 8 and Figure 10 As shown, the positioning detection part includes a limit seat 326, two groups of pressure sensors 328, two groups of sliders 329 and two groups of springs 3210. The limit seat 326 is fixed to the top of the telescopic rod 325. Grooves 327 are provided on both sides of the limit seat 326. The two groups of pressure sensors 328, the two groups of sliders 329 and the two groups of springs 3210 are respectively arranged in the grooves 327 on both sides of the limit seat 326. Each group of springs 3210 is provided with a plurality of springs. One side of the pressure sensor 328 is fixedly connected to the limit seat 326, and the other side of the pressure sensor 328 is fixedly connected to one end of the spring 3210. The other end of the spring 3210 is fixedly connected to the slider 329. The slider 329 is slidably connected to the limit seat 326. When the slider 329 is subjected to a force toward the side of the pressure sensor 328, the spring 3210 is compressed, and the force applied to the slider 329 is transmitted to the pressure sensor 328 through the spring 3210, so that the pressure sensor 328 can detect the force applied to the slider 329. Flanges 3211 are fixedly connected on both sides of the top of the limit seat 326. The flanges 3211 are located above the slider 329. The flanges 3211 are used to prevent impurities from entering the sliding connection between the slider 329 and the top of the limit seat 326, thereby affecting the pressure sensor 328 from normally detecting whether the slider 329 is under force.

[0029] It should be noted that when the spring 3210 is in an extended state and the slider 329 is perpendicular to the radial direction of the disk 13, the telescopic rod 325 is controlled to contract, so that the positioning detection part can pass through the arc-shaped slide groove 14, and then after the motor three 323 adjusts the angle of the positioning detection part and the telescopic rod 325 adjusts the lifting height of the positioning detection part, the positioning detection part can be located below the arc-shaped slide groove 14 or above the arc-shaped slide groove 14.

[0030] Specifically, such as Figure 2 As shown, the cleaning mechanism 4 includes a bracket 2 41, a motor 42 and a protective cover 44. The bracket 2 41 is fixed to the side of the frame 11, the motor 42 is fixed to the bottom of the bracket 2 41, and the top of the motor 42 is rotatably connected to the connecting frame 43. The output end of the motor 42 passes through the bracket 2 41 and is fixedly connected to the connecting frame 43. The connecting frame 43 is Z-shaped and the protective cover 44 is fan-shaped. When the motor 42 starts to rotate, it drives the connecting frame 43 to rotate, adjusts the position of the protective cover 44, and thereby makes the protective cover 44 located above the disc 13 or removed from above the disc 13, thereby achieving the effect of adjusting the position of the protective cover 44 and thus adjusting the cleaning area.

[0031] The protective cover 44 is located above the disc 13 and is fixed to the bottom of the connecting frame 43. The connecting frame 43 and the protective cover 44 are provided with a plurality of air pipes 45. The plurality of air pipes 45 pass through the connecting frame 43 and the protective cover 44 and are fixedly connected to the connecting frame 43 and the protective cover 44. The air pipe 45 on the connecting frame 43 is connected to an exhaust pipe, on which an exhaust fan and a filter are provided. When the exhaust fan and the filter are activated, they can absorb the air with dust dispersed between the disc 13 and the protective cover 44 and filter the dust. The air pipes 45 located on both sides of the connecting frame 43 and on the protective cover 44 are connected to the air intake pipe, and an air intake fan is provided on the air intake pipe. When the air intake fan is started, air can be passed into the space between the disc 13 and the protective cover 44, blowing up the deposited dust so that the dust can be sucked in by the exhaust fan and then filtered by the filter.

[0032] Specifically, such as Figure 2 As shown, the detection mechanism 5 includes a bracket three 51 and a camera 52. The bracket three 51 is fixed to the side of the frame 11, and the camera 52 is fixed to the bottom of the bracket three 51. The camera 52 is located at the top center of the disc 13. The camera 52 is used to capture the image of the five-star foot after welding.

[0033] The camera 52 and the pressure sensor 328 are electrically connected to a data analysis module, which is used to obtain the data detected by the pressure sensor 328 and the picture of the five-star foot after welding taken by the camera 52, and then judge the quality of the five-star foot welding based on the obtained data.

[0034] Working principle of welding device for producing five-star chair feet: The staff controls the motor 317 to start forward rotation, driving the several screw rods 315 to reverse synchronously, so that the positioning block 311 moves toward the side close to the positioning column 314, and places the center disk of the five-star foot on the periphery of the several positioning blocks 311. Then, the staff controls the motor 317 to start reverse rotation, so that the several positioning blocks 311 limit the center of the center disk and position the center disk.

[0035] Support leg positioning and welding: Control the extension of the telescopic rods 325 on the support parts of two adjacent groups of limit assemblies 32, and the contraction of the telescopic rods 325 on the support parts of the other groups of limit assemblies 32, so that the corresponding positioning detection parts are located below the arc-shaped slide groove 14; The motor 2 322 on the supporting part of the two adjacent groups of limit assemblies 32 that control the extension of the telescopic rod 325 starts to rotate, so that the two groups of positioning detection parts are located at the adjacent two groups of arc-shaped slides 14 and are close to each other, one group of positioning detection parts is located at the end of the arc-shaped slide 14, and the other group of positioning detection parts maintains a certain distance therefrom, and the specific distance is set according to the width of the five-star foot support leg. Then, the motor 2 322 corresponding to the positioning detection part that maintains a certain distance from the positioning detection part located at the end of the arc-shaped slide 14 is controlled to start to rotate, driving the positioning detection part to approach the positioning detection part located at the end of the arc-shaped slide 14, fixing the position of the five-star foot support leg, and then controlling the rotating table 12 to rotate to a set angle, the specific set angle is set manually, so that the five-star foot corresponds to the position of the welding robot 2, and the welding robot 2 welds the support legs fixed by the two groups of positioning detection parts to the outer wall of the center disk.

[0036] It should be noted that, since the five legs of the five-star base are usually arranged equidistantly around the periphery of the center disk along the circumference of the center disk, the angle of a single rotation of the disk 13 driven by the rotating platform 12 when it is started is 72°.

[0037] Repeat the leg positioning and welding to position and fix the remaining five-star legs, and weld the bracket to the center plate to form a complete five-star leg.

[0038] After the center positioning assembly 31 positions the center disk, the control motor 42 is started to drive the connecting frame 43 to rotate, so that the protective cover 44 is located above the disk 13, forming a relatively closed dust processing space. During welding, the exhaust fan, filter and intake fan are controlled to start, and air is passed into the space between the disk 13 and the protective cover 44 to blow away the deposited dust. The exhaust fan sucks in the air containing dust, which is then filtered by the filter.

[0039] Welding quality inspection - single leg: keep the center positioning component 31 positioned on the center plate of the five-star leg, and make the two adjacent groups of limit components 32 corresponding to the leg to be inspected be in the leg positioning and welding state, then control the motor 2 322 of the two adjacent groups of limit components 32 to start synchronously, drive the limit components 32 to rotate in the direction of the positioning detection part located at the end of the arc-shaped slide groove 14, and the data analysis module obtains the shooting picture of the camera 52 and the detection data of the pressure sensor 328 on the two groups of limit components 32. If the position of the leg does not change in the shooting picture of the data analysis module, it means that the center positioning component 31 has a good positioning of the center plate, and the subsequent pressure judgment continues; if the position of the leg changes in the shooting picture of the camera 52, it means that the positioning effect of the center positioning component 31 on the center plate is poor, and the data analysis module issues an alarm prompt; Pressure judgment: When the motor 2 322 that controls the two adjacent groups of limit components 32 is started synchronously, the data analysis module obtains the first maximum difference in the pressure values ​​detected by the pressure sensors 328 of the limit components 32 on both sides of the support leg. A first threshold corresponding to this is set in the data analysis module. When the first maximum difference does not exceed the first threshold, the support leg is not completely welded, and the support leg will rotate synchronously with the rotation of the limit component 32 and be deformed. If the first maximum difference exceeds the first threshold, the support leg is completely welded, and the support leg will not rotate around the center disk with the rotating limit component 32.

[0040] Welding quality inspection - all supporting legs: control motor 1 317 to start forward rotation, drive several screw rods 315 to reverse synchronously, so that the positioning block 311 moves toward the side close to the positioning column 314, so that the positioning block 311 releases the restriction on the inner wall of the center disk of the five-star foot. The data analysis module obtains the image of the five-star foot taken by the camera 52, and obtains the angles between the center of the center disk of the five-star foot and the five supporting legs. If the five angles are the same, it is judged that the welding shape is normal and subsequent supplementary inspections are continued. If they are not equal, it is judged that the welding shape is abnormal and an alarm is prompted.

[0041] Supplementary test 1: Since the data analysis module obtains the image of the five-star foot taken by the camera 52, the positioning block 311 releases the restriction on the center disk of the five-star foot after welding is completed. At this time, the center of the center disk of the five-star foot is fixed; at the same time, the motor three 323 of the plurality of limit assemblies 32 is controlled to start, and the angle of the positioning detection part is adjusted so that the side wall of the slider 329 is perpendicular to the radial direction of the disc 13, and the telescopic rod 325 is retracted so that the positioning detection part is located below the arc-shaped slide groove 14, and the restriction of the positioning detection part on the support leg is released; then the rotating table 12 is controlled to start, and the speed, number of rotations or rotation time of the rotating table 12 are all set manually; due to the gravity of the five-star foot and the friction between it and the disc 13, the rotating table 12 is controlled to start again. When the disc 13 is driven to rotate, the five-star foot will be driven to rotate synchronously. When there is welding slag, welding deficiency or damage on the support legs of the five-star foot, the weight on the corresponding support legs will change, resulting in different centrifugal forces on each support leg when the five-star foot rotates, causing the five-star foot to shift in position under the action of centrifugal force, and then the center of the circle of the center disk of the five-star foot will change; after the rotating table 12 rotates a certain number of circles or for a certain period of time, the data analysis module obtains the image of the five-star foot taken by the camera 52, and obtains the center position of the center disk of the five-star foot. If the center position of the center disk is consistent with the initial time, the welding quality of the five-star foot is good. If the center position of the center disk is inconsistent with the initial time, the welding quality of the five-star foot is poor, and an alarm is issued.

[0042] Supplementary detection 2: simultaneously control the motor 2 322 of several groups of limit components 32 to start, adjust the position of the positioning detection part, and the data analysis module obtains the position of the positioning detection part on several groups of limit components 32, so that the sliders 329 on the same side of several groups of limit components 32 are fitted with the five-star foot support legs. At this time, the pressure value detected by the corresponding pressure sensor 328 is kept within a certain range, and the specific pressure range is set manually; then the rotating table 12 is controlled to start, driving the disc 13 to rotate, and the rotation direction and the direction toward the support leg fitting slider 329, the speed, number of rotations or rotation time of the rotating table 12 are all set manually; the rotation of the disc 13 will drive the five-star foot to rotate synchronously. When there is welding slag, welding deficiency or damage to the five-star foot support legs, it will cause the weight on the corresponding support legs to change, resulting in different centrifugal forces on each support leg when the five-star foot rotates, causing the five-star foot to be offset under the action of centrifugal force, thereby causing the fitted slider 329 to be produced. The forces generated are different, and the pressure values ​​obtained by the pressure sensors 328 corresponding to each slider 329 are different, and the pressure difference will increase. The data analysis module obtains the second maximum difference of the pressure values ​​obtained by several groups of pressure sensors 328 at the same time within the time range after the turntable 12 is started, and the third maximum difference of the same pressure sensor 328 within the time range. The data analysis module is provided with a second threshold corresponding to the second maximum difference and a third threshold corresponding to the third maximum difference. When the second maximum difference does not exceed the second threshold and the third maximum difference does not exceed the third threshold, it is judged that the weld quality is good. If the second maximum difference exceeds the second threshold, it is judged that the weld quality is poor, which is caused by welding or the support leg itself, and the data analysis module issues an alarm. If the third maximum difference exceeds the third threshold, it is because the surface of the disc 13 is abnormal, resulting in the presence of foreign matter blocking the rotation of the five-star foot, causing the third maximum difference to increase, and the data analysis module issues an alarm.

[0043] Through the above method, the positioning, fixing and detection of the five-star foot legs can be improved automatically, thereby improving the welding quality and efficiency of the five-star foot legs.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A welding device for producing five-star chair feet, comprising a workbench (1), a welding robot (2), a positioning mechanism (3), a cleaning mechanism (4), a detection mechanism (5) and a five-star chair foot, characterized in that: The welding robot (2) is arranged on one side of the workbench (1); the positioning mechanism (3), the cleaning mechanism (4), and the detection mechanism (5) are all arranged on the workbench (1); and the five-star foot includes a center plate and five supporting legs; The workbench (1) comprises a frame (11) and a disc (13), a rotating table (12) is fixed on the top of the frame (11), the disc (13) is fixed on the top of the rotating table (12), a plurality of arc-shaped sliding grooves (14) are arranged at equal intervals along the circumferential direction on the disc (13), and a limiting hole (15) is arranged at the center of the disc (13); The positioning mechanism (3) includes a center positioning component (31), a plurality of limit components (32), a fixed ring (33) and a slide rail (34), wherein the fixed ring (33) is fixed to the bottom of the disc (13), the center positioning component (31) is arranged in the limit hole (15), the limit component (32) is arranged in the arc-shaped slide groove (14) and outside the fixed ring (33), and the slide rail (34) is fixed to the outer wall of the fixed ring (33); The position limiting assembly (32) includes a support portion and a positioning detection portion, wherein the positioning detection portion is fixed to the top of the support portion, and the positioning detection portion includes a position limiting seat (326), two groups of pressure sensors (328), two groups of sliders (329), and two groups of springs (3210); The detection mechanism (5) comprises a third bracket (51) and a camera (52).

2. A welding device for producing five-star chair feet according to claim 1, characterized in that: The center positioning assembly (31) includes a plurality of positioning blocks (311) and a motor (317), wherein the plurality of positioning blocks (311) are disposed in the limiting holes (15), and the bottom of the disk (13) is fixedly connected to a fixing platform (312) and a bracket (316), wherein the bracket (316) is disposed on the periphery of the fixing platform (312), and the motor (317) is fixed to the bottom of the bracket (316); A plurality of slide grooves (313) are provided on the fixed platform (312), and the bottom of the positioning block (311) is located in the slide grooves (313) and is slidably connected to the fixed platform (312); The center of the fixed platform (312) is fixedly connected to a positioning column (314), the bearing on the positioning column (314) is connected to a screw rod (315), the inside of the slide groove (313) is fixedly connected to a bearing seat (318), the screw rod (315) is connected to the bearing seat (318), the positioning block (311) is connected to the screw rod (315) in a transmission manner, and the output end of the motor (317) is connected to the plurality of screw rods (315) in a bevel gear transmission manner.

3. A welding device for producing five-star chair feet according to claim 2, characterized in that: The support portion is arranged on the periphery of the fixing ring (33), and the positioning detection portion is arranged in the arc-shaped sliding groove (14); The support portion includes a connecting seat (321), a second motor (322), a third motor (323), a rotating platform (324) and a telescopic rod (325). The connecting seat (321) is arranged in the slide rail (34) and is rotatably connected to the slide rail (34). The second motor (322) is fixed to the top of the connecting seat (321). The output end of the second motor (322) passes through the connecting seat (321) and is connected to the outer wall gear of the fixed ring (33) through a transmission.

4. A welding device for producing five-star chair feet according to claim 3, characterized in that: The motor three (323) is fixed to the bottom of the connecting seat (321), the rotating platform (324) is arranged on the top of the connecting seat (321) and is rotatably connected to the connecting seat (321), and the output end of the motor three (323) passes through the bottom of the connecting seat (321) and is connected to the rotating platform (324) by gear transmission; The telescopic rod (325) is fixed to the top of the rotating platform (324).

5. A welding device for producing five-star chair feet according to claim 4, characterized in that: The limiting seat (326) is fixed to the top of the telescopic rod (325), and grooves (327) are provided on both sides of the limiting seat (326). Two groups of pressure sensors (328), two groups of sliders (329), and two groups of springs (3210) are respectively arranged in the grooves (327) on both sides of the limiting seat (326). Each group of springs (3210) is provided with a plurality of springs. One side of the pressure sensor (328) is fixedly connected to the limiting seat (326), and the other side of the pressure sensor (328) is fixedly connected to one end of the spring (3210). The other end of the spring (3210) is fixedly connected to the slider (329), and the slider (329) is slidably connected to the limiting seat (326).

6. A welding device for producing five-star chair feet according to claim 5, characterized in that: Flanges (3211) are fixedly connected to both sides of the top of the limiting seat (326), and the flanges (3211) are located above the slider (329).

7. A welding device for producing five-star chair feet according to claim 6, characterized in that: The cleaning mechanism (4) includes a second bracket (41), a fourth motor (42) and a protective cover (44), wherein the second bracket (41) is fixed to the side of the frame (11), the fourth motor (42) is fixed to the bottom of the second bracket (41), the top of the fourth motor (42) is rotatably connected to a connecting frame (43), and the output end of the fourth motor (42) passes through the second bracket (41) and is fixedly connected to the connecting frame (43).

8. The welding device for producing five-star chair feet according to claim 7, characterized in that: The protective cover (44) is located above the disc (13), and the protective cover (44) is fixed to the bottom of the connecting frame (43). The connecting frame (43) and the protective cover (44) are provided with a plurality of air pipes (45). The plurality of air pipes (45) pass through the connecting frame (43) and the protective cover (44) and are fixedly connected to the connecting frame (43) and the protective cover (44); The air pipe (45) located on the connecting frame (43) is connected to an exhaust pipe, and the exhaust pipe is provided with an exhaust fan and a filter; The air pipes (45) located on both sides of the connecting frame (43) and on the protective cover (44) are connected to an air intake pipe, and an air intake fan is provided on the air intake pipe.

9. A welding device for producing five-star chair feet according to claim 8, characterized in that: The third bracket (51) is fixed to the side of the frame (11), the camera (52) is fixed to the bottom of the third bracket (51), and the camera (52) is located at the top center of the disc (13).

10. A welding device for producing five-star chair feet according to claim 9, characterized in that: The camera (52) and the pressure sensor (328) are electrically connected to a data analysis module, and the data analysis module is used to obtain data detected by the pressure sensor (328) and a picture of the five-star foot after welding taken by the camera (52), and then judge the quality of the five-star foot welding based on the obtained data.

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