An arc welding production line and arc welding method for a precision robot aluminum box

Abstract

The application provides an aluminum box high-efficiency arc welding production line based on a precision robot and an arc welding method, and belongs to the technical field of welding. The aluminum box high-efficiency arc welding production line comprises a production platform, a rotating fixed clamping assembly arranged on the production platform, arc welding assemblies arranged on the upper end of the production platform from left to right, a three-dimensional detection assembly and a sorting assembly. The aluminum box high-efficiency arc welding production line can automatically clamp, arc weld, detect the appearance, detect the weld, automatically classify and collect the aluminum box, does not need human participation, has the advantages of high mechanization and automation, saves a large amount of human resources, has high control precision, connects the various processing work of the aluminum box workpiece in time and reasonably, improves the arc welding quality, increases the yield, and meets the use of precision robot manufacturing.

Description

Technical Field

[0001] This invention belongs to the field of welding technology, specifically an arc welding production line and arc welding method for aluminum housings of precision robots. Background Technology

[0002] Precision robots are high-precision, high-speed, and highly reliable robots typically used in production lines and manufacturing processes requiring high-precision operations. They usually possess a high-precision motion control system that precisely controls the robot's trajectory and position, high-speed movement capabilities for quickly completing complex operations, and a highly reliable structure and components for long-term, stable operation. They also have multiple functions, performing various tasks such as welding, assembly, and painting. Precision robots are widely used in manufacturing to improve production efficiency, reduce production costs, and enhance product quality. They are also widely used in the service industry, such as in catering, healthcare, and logistics.

[0003] The aluminum housing is a crucial component of precision robots, significantly impacting their performance and lifespan. Therefore, careful attention should be paid to material selection, process optimization, and quality control during the design and manufacture of aluminum housings.

[0004] The arc welding production line for aluminum enclosures is a precision robotic welding production line that typically uses arc welding technology. The advantages of arc welding production lines include high welding speed, high welding quality, high production efficiency, and simple operation. It can be widely used in automobile manufacturing, home appliance manufacturing, and electronics manufacturing, providing enterprises with efficient and stable production lines.

[0005] The existing high-efficiency arc welding production line for aluminum boxes based on precision robots has a low degree of mechanization and automation, requiring a lot of manual inspection and handling, which greatly increases the workload of workers and reduces work efficiency. At the same time, the clamping and fixing effect on aluminum box workpieces is not good, and it does not have automatic sorting and collection functions. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an arc welding production line and arc welding method for aluminum housings of precision robots.

[0007] The technical solution of the present invention is: an arc welding production line for aluminum housing of precision robot, comprising a production platform, a rotating and fixing clamping assembly disposed on the production platform, an arc welding assembly, a three-dimensional detection assembly, and a sorting assembly arranged from left to right on the upper part of the production platform;

[0008] The production platform is provided with a first sliding rail along its length at the upper end, and a linkage platform is slidably connected to the first sliding rail. The production platform is provided with mounting horizontal plates on the front and rear sides respectively, and sliding horizontal grooves are provided on the opposite sides of the two mounting horizontal plates respectively. One end of the rotating fixed clamping assembly is connected to the sliding horizontal groove, and the other end is used to clamp the aluminum box workpiece. The fixed clamping assemblies located in the two sliding horizontal grooves are symmetrically distributed.

[0009] The arc welding assembly is located on both sides of the first sliding rail. The arc welding assembly includes a wire feeder, a wire storage box, and a water-cooled welding gun. The three-dimensional detection assembly includes a mounting frame located on the production platform and at the upper end of the first sliding rail, a three-dimensional laser scanner located at the bottom end of the mounting frame, and a supplementary light located on the mounting frame. The mounting frame includes an L-shaped mounting frame symmetrically distributed on both sides of the first sliding rail and having a sliding opening in the horizontal section, a mounting crossbar located between the two L-shaped mounting frames and extending to the sliding opening on the left and right sides respectively, and a second hydraulic cylinder for connecting the mounting crossbar and the inner wall of the sliding opening. The three-dimensional laser scanner is located at the bottom end of the mounting crossbar, and the supplementary light is located at the bottom end of the horizontal section of the L-shaped mounting frame. The bottom end of the vertical section of one of the L-shaped mounting frames is slidably connected to the bottom end of the production platform along the width direction.

[0010] The production platform has a first temporary storage platform at the discharge end, and a first material conveying area and a second material conveying area are respectively provided on the front and rear sides of the first temporary storage platform. The first material conveying area and the second material conveying area are respectively provided with a second sliding rail perpendicular to the first sliding rail. The sorting component is composed of mechanical grippers respectively provided on the front and rear sides of the first temporary storage platform.

[0011] The rotating and fixing clamping assembly includes a sliding mounting block slidably connected to the inner wall of the sliding transverse groove, a threaded mounting shaft disposed along the length direction within the sliding transverse groove and passing through the sliding mounting block, a first rotary motor connected to one end of the threaded mounting shaft, an arc-shaped mounting plate connected to the sliding mounting block via a first hydraulic cylinder and having an arc-shaped groove on its inner wall, an arc-shaped connecting frame whose outer wall is slidably connected to the inner wall of the arc-shaped groove via an arc-shaped sliding strip, a connecting crossbar connected to the front end of the arc-shaped connecting frame, and two clamping rods perpendicularly distributed to the connecting crossbar and whose one end can slide left and right along the side wall of the connecting crossbar. When arc welding of the aluminum box workpiece is required, it is placed on the upper end of the linkage platform, and the corresponding arc-shaped mounting plate, arc-shaped connecting frame, and connecting crossbar are moved towards the side of the aluminum box workpiece by the extension action of each first hydraulic cylinder until they contact the connecting crossbar. The two clamping rods located on the same connecting crossbar slide towards each other to clamp and fix the aluminum box workpiece. By clamping and fixing the aluminum box workpiece, stability is increased and the accuracy of arc welding is improved. Moreover, the entire clamping process does not require human intervention and has a high degree of automation.

[0012] Furthermore, each of the two clamping rods has a clamping recess on its opposite side, and a plurality of electromagnetic chucks are provided in the clamping recess.

[0013] Note: When two clamping rods located on the same connecting crossbar clamp the aluminum box workpiece, the electromagnetic chuck in the clamping notch magnetically fixes the outer wall of the aluminum box workpiece, further increasing the stability of the aluminum box workpiece, avoiding external force causing the aluminum box workpiece to deviate from the water-cooled welding gun, and improving the accuracy of arc welding.

[0014] Furthermore, a rotating mounting plate is vertically connected to the front side of the sliding mounting block, and a drive gear is provided on the rotating mounting plate. The drive gear is connected to a second rotating motor through a connecting shaft, and a driven rack that meshes with the drive gear is provided on the outer wall of the arc-shaped connecting frame.

[0015] Instructions: When the welding position of the aluminum box workpiece needs to be changed, turn on the two second rotary motors and rotate them in opposite directions to make the corresponding drive gears rotate synchronously. At this time, the driven rack located on the outer wall of the arc-shaped connecting frame rotates, causing the arc-shaped sliding strip to slide on the inner wall of the corresponding arc-shaped groove, thereby driving the arc-shaped connecting frame to rotate. The two relatively distributed arc-shaped connecting frames rotate in opposite directions, causing the aluminum box workpiece to rotate in the horizontal direction, thus changing the position of the horizontal weld. When the position of the vertical weld needs to be changed, change the placement direction of the aluminum box workpiece so that the weld is in a horizontal position, and then repeat the above operation. By automatically adjusting the weld position, the convenience, accuracy and reliability of arc welding operation and production line reliability are greatly improved, making it suitable for large-scale promotion.

[0016] Furthermore, the discharge end of the second material conveying area is connected to a second temporary storage platform, and mechanical grippers are provided around the second temporary storage platform. A return material platform is connected to the side wall of the second temporary storage platform and is distributed parallel to the production platform. A feeding belt is provided on the return material platform, and a third temporary storage platform is provided between the return material platform and the inlet end of the production platform. A mechanical gripper is provided on the third temporary storage platform, and a three-dimensional detection component is also provided on the second temporary storage platform.

[0017] Explanation: After the welded aluminum box workpieces are visually inspected by a 3D inspection component located on the production platform, workpieces that fail the visual inspection are picked up by a corresponding mechanical gripper and placed on the first material handling area, then transported and collected via the corresponding second sliding rail. Workpieces that pass the visual inspection are picked up by a corresponding mechanical gripper and placed on the second material handling area, then transported via the corresponding second sliding rail to the second temporary storage platform. Simultaneously, the weld seam is inspected by a 3D inspection component on the second temporary storage platform. If the weld seam passes the inspection, it is picked up by a corresponding mechanical gripper and stored for later use. If the weld seam fails the inspection, it is picked up by a mechanical gripper and placed on the feeding belt on the return material platform, then transported via the feeding belt to the third temporary storage platform. From the third temporary storage platform, it is picked up by a mechanical gripper and placed on the production platform for re-arc welding. This process is repeated until the weld seam of the aluminum box workpiece meets the requirements. In this process, by performing dual inspections of the appearance and weld seam of the aluminum box workpieces, the quality of the aluminum box workpieces is improved, enabling them to meet the manufacturing requirements of precision robots.

[0018] Furthermore, the first material handling area is provided with a first storage box for storing waste materials, and the second material handling area is provided with a second storage box for storing qualified aluminum box workpieces.

[0019] Note: When the appearance is not up to standard, the aluminum box workpiece is picked up by the corresponding mechanical gripper and temporarily stored in the first storage box. When the appearance and weld meet the usage requirements, the aluminum box workpiece is picked up by the mechanical gripper and stored in the second storage box. The above process increases the integrity and continuity of the entire production line, and at the same time, it can avoid the increase in workload caused by manual handling.

[0020] Furthermore, it also includes an air intake assembly located on the upper part of the production platform. The air intake assembly includes a spray washing tank with an air inlet on its side wall, a support umbrella frame located around the air inlet, a plurality of air intake branch pipes located on the upper part of the support umbrella frame, a folded connecting main pipe for connecting each of the air intake branch pipes and the air inlet, and an air intake head located on each of the air intake branch pipes at the end away from the folded connecting main pipe. The support umbrella frame includes a first connecting block connected to the side wall of the spray washing tank via a first electric telescopic rod and having a plurality of through holes at its upper end corresponding to the air intake branch pipes, and a plurality of connecting support rods hinged to the side wall of the first connecting block opposite to the first electric telescopic rod. The air intake branch pipes are correspondingly arranged on the connecting support rods.

[0021] Description: Harmful fumes generated during arc welding are drawn into corresponding intake branches by each intake head, and then collected through the folded connecting main pipe before entering the spray washing box for purification treatment. Finally, they are discharged into the atmosphere, avoiding environmental pollution or harm to workers. This method is environmentally friendly, safe, and reliable. The intake branches are supported by a support umbrella frame, which can also adjust the distance between each intake head by unfolding the frame, thereby increasing the overall adsorption effect of the intake assembly on harmful fumes and improving the working efficiency of the intake assembly. Because the folded connecting main pipe has a folded structure, the distance between each intake head can be adjusted, further increasing the adsorption area and improving working efficiency. The intake branches are clamped and fixed through the through-hole on the first connecting block, improving the reliability of the installation.

[0022] Furthermore, a second connecting block is connected to the first connecting block via a second electric telescopic rod. Each connecting rod has an adjustment groove on its inner wall. An adjustment rod corresponding to and slidably connected to the adjustment groove is hinged to the second connecting block. The adjustment rod is a telescopic structure.

[0023] Explanation: When not in operation, the second connecting block moves away from the first connecting block by extending the second electric telescopic rod. At this time, each adjusting rod on the second connecting block slides synchronously in the corresponding adjusting groove and gradually changes with the moving length, so that each connecting rod folds closer to each other, greatly reducing the space occupied by the umbrella frame.

[0024] This invention also discloses an arc welding method for aluminum housings of precision robots, based on the aforementioned arc welding production line for aluminum housings of precision robots, comprising the following steps:

[0025] S1. Place the aluminum box workpiece requiring arc welding on the upper part of the linkage platform on the production platform, ensuring the weld seam is horizontal, and clamp and fix the aluminum box workpiece using two relatively distributed rotating and fixing clamping components.

[0026] S2. The linkage platform is slid on the first sliding rail by an external drive device and positioned at the arc welding assembly. At this time, the welding wire in the wire storage box is fed to the water-cooled welding gun by the wire feeder, and the weld seam of the aluminum box workpiece is welded by the water-cooled welding gun.

[0027] S3. After welding, the linkage platform is slid on the first sliding rail to the three-dimensional detection component by an external drive device. The rotating and fixing clamping component slides synchronously in the sliding groove on the mounting plate under the drive of the linkage platform. At this time, the appearance of the welded aluminum box workpiece is inspected by a three-dimensional laser scanner and supplemented by a supplementary light. After the inspection, the aluminum box workpieces with unqualified appearance are picked up by the corresponding mechanical gripper and placed on the first material conveying area, and then transported and collected by the corresponding second sliding rail. The aluminum box workpieces with qualified appearance are picked up by the corresponding mechanical gripper and placed on the second material conveying area, and then transported and collected by the corresponding second sliding rail.

[0028] S4. When using the three-dimensional inspection component, the second hydraulic cylinder is activated according to the width of the aluminum box workpiece. The compression or extension action of the second hydraulic cylinder drives the bottom end of the vertical section of one of the L-shaped mounting brackets to move back and forth, thereby adjusting the distance between the two L-shaped mounting brackets to meet the needs of aluminum box workpieces of various sizes.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1) The arc welding production line of the present invention can automatically clamp, arc weld, inspect appearance, inspect weld seam, and automatically classify and collect aluminum boxes without human intervention. It has the advantages of high mechanization and automation, saving a lot of human resources. Moreover, the production line has high control precision, and the various processing operations of the aluminum box workpieces are connected in a timely and reasonable manner, which improves the arc welding quality, increases the yield, and meets the requirements of precision robot manufacturing.

[0031] (2) When the aluminum box is fixed by the rotating fixed clamping assembly, the two clamping rods on the same connecting crossbar slide towards each other to clamp and fix the aluminum box workpiece. The electromagnetic chuck in the clamping notch magnetically fixes the outer wall of the aluminum box workpiece, which further increases the stability of the aluminum box workpiece and avoids the aluminum box workpiece from shifting due to external force. The water-cooled welding gun improves the accuracy of arc welding. At the same time, the two relatively distributed arc connecting frames rotate in opposite directions, causing the aluminum box workpiece to rotate in the horizontal direction, thereby changing the position of the horizontal weld. When it is necessary to change the position of the vertical weld, the placement direction of the aluminum box workpiece is changed so that the weld is in the horizontal position. By automatically adjusting the weld position, the convenience, accuracy and reliability of the arc welding operation and the production line are greatly improved, which is suitable for large-scale promotion. Attached Figure Description

[0032] Figure 1 This is an overall top view of the invention;

[0033] Figure 2 This is a side view of the production platform during the installation of the rotary fixing clamping assembly of the present invention;

[0034] Figure 3 This is a side view of the production platform during the installation of the three-dimensional detection component of the present invention;

[0035] Figure 4 This is a top view of the rotating fixing clamping assembly of the present invention when the arc-shaped connecting frame is connected to the arc-shaped mounting plate;

[0036] Figure 5 This is a top view of the rotational fixing clamping assembly of the present invention when the driven rack is installed outside the arc-shaped sliding bar;

[0037] Figure 6 This is a schematic diagram of the air intake component of the present invention.

[0038] Among them, 1-production platform, 10-first sliding rail, 11-linkage platform, 12-mounting horizontal plate, 120-sliding horizontal groove, 13-first temporary storage platform, 130-first material conveying area, 131-second material conveying area, 132-second sliding rail, 133-first storage box, 134-second storage box, 14-second temporary storage platform, 15-return material platform, 16-feeding belt, 17-third temporary storage platform, 2-rotating fixed clamping assembly, 20-sliding mounting block, 201-rotating mounting plate, 202-drive gear, 203-second rotary motor, 21-threaded mounting shaft, 22-threaded mounting shaft, 23-arc mounting plate, 230-first hydraulic cylinder, 231-arc groove, 24-arc connecting frame, 240-arc sliding bar, 241-driven rack, 25-connecting crossbar, 26- Clamping rod, 260-clamping notch, 261-electromagnetic chuck, 3-arc welding assembly, 30-wire feeder, 31-wire storage box, 32-water-cooled welding gun, 4-3D detection assembly, 40-mounting bracket, 400-sliding opening, 401-L-shaped mounting bracket, 402-mounting crossbar, 403-second hydraulic cylinder, 41-3D laser scanner, 42-fill light, 5-sorting assembly, 50-mechanical gripper, 6-suction assembly, 60-spray washing box, 600-air inlet, 61-support umbrella frame, 610-first electric telescopic rod, 611-through opening, 612-first connecting block, 613-connecting support rod, 614-second electric telescopic rod, 615-second connecting block, 616-adjusting groove, 617-adjusting support rod, 62-suction branch pipe, 63-folding connecting main pipe, 64-suction head. Detailed Implementation

[0039] To further understand the content of the present invention, the present invention will be described in detail below through embodiments.

[0040] Example 1

[0041] like Figure 1As shown, an arc welding production line for aluminum housing of precision robot includes a production platform 1, a rotary fixing clamping assembly 2 disposed on the production platform 1, an arc welding assembly 3, a three-dimensional detection assembly 4, and a sorting assembly 5 arranged from left to right on the upper end of the production platform 1.

[0042] The production platform 1 has a first sliding rail 10 along its length at the upper end, and a linkage platform 11 is slidably connected to the first sliding rail 10. The production platform 1 has mounting horizontal plates 12 on the front and rear sides respectively, and sliding horizontal grooves 120 are provided on the opposite sides of the two mounting horizontal plates 12. One end of the rotating fixed clamping assembly 2 is connected to the sliding horizontal groove 120, and the other end is used to clamp the aluminum box workpiece. The fixed clamping assemblies 2 located in the two sliding horizontal grooves 120 are symmetrically distributed.

[0043] like Figure 3 As shown, the arc welding assembly 3 is located on both sides of the first sliding rail 10. The arc welding assembly 3 includes a wire feeder 30, a wire storage box 31, and a water-cooled welding gun 32. The three-dimensional detection assembly 4 includes a mounting frame 40 located on the production platform 1 and at the upper end of the first sliding rail 10, a three-dimensional laser scanner 41 located at the bottom end of the mounting frame 40, and a supplementary light 42 located on the mounting frame 40. The mounting frame 40 includes an L-shaped mounting frame 401 symmetrically distributed on both sides of the first sliding rail 10 and having a sliding opening 400 in the horizontal section, a mounting crossbar 402 located between the two L-shaped mounting frames 401 and extending to the sliding opening 400 on the left and right sides respectively, and a second hydraulic cylinder 403 for connecting the mounting crossbar 402 and the inner wall of the sliding opening 400. The three-dimensional laser scanner 41 is located at the bottom end of the mounting crossbar 402, and the supplementary light 42 is located at the bottom end of the horizontal section of the L-shaped mounting frame 401. The bottom end of the vertical section of one of the L-shaped mounting frames 401 is slidably connected to the bottom end of the production platform 1 along the width direction.

[0044] The production platform 1 has a first temporary storage platform 13 at the discharge end, and a first material conveying area 130 and a second material conveying area 131 are respectively provided on the front and rear sides of the first temporary storage platform 13. The first material conveying area 130 and the second material conveying area 131 are respectively provided with a second sliding rail 132 perpendicular to the first sliding rail 10. The sorting component 5 is composed of mechanical grippers 50 respectively provided on the front and rear sides of the first temporary storage platform 13.

[0045] like Figure 2 , 4As shown, the rotary fixing clamping assembly 2 includes a sliding mounting block 20 that is slidably connected to the inner wall of the sliding transverse groove 120, a threaded mounting shaft 21 that is disposed in the sliding transverse groove 120 along the length direction and passes through the sliding mounting block 20, a first rotary motor 22 connected to one end of the threaded mounting shaft 21, an arc-shaped mounting plate 23 that is connected to the sliding mounting block 20 through a first hydraulic cylinder 230 and has an arc-shaped groove 231 on its inner wall, an arc-shaped connecting frame 24 whose outer wall is slidably connected to the inner wall of the arc-shaped groove 231 through an arc-shaped sliding strip 240, a connecting crossbar 25 connected to the front end of the arc-shaped connecting frame 24, and two clamping rods 26 that are perpendicular to the connecting crossbar 25 and whose one end can slide left and right along the side wall of the connecting crossbar 25.

[0046] The two clamping rods 26 are respectively provided with clamping recesses 260 on opposite sides, and three electromagnetic chucks 261 are provided in the clamping recesses 260;

[0047] Among them, the wire feeder 30, water-cooled welding gun 32, three-dimensional laser scanner 41, supplementary light 42, second hydraulic cylinder 403, mechanical gripper 50, first rotary motor 22 and electromagnetic chuck 261 all adopt existing technologies.

[0048] Example 2

[0049] This embodiment discloses an arc welding method for aluminum housings of precision robots, based on an arc welding production line for aluminum housings of precision robots in Embodiment 1, including the following steps:

[0050] S1. Place the aluminum box workpiece that needs to be arc welded on the upper end of the linkage platform 11 on the production platform 1, so that the weld is in the horizontal direction. Through the extension of each first hydraulic cylinder 230, drive the corresponding arc mounting plate 23, arc connecting frame 24 and connecting crossbar 25 to move closer to the aluminum box workpiece until they contact the connecting crossbar 25. Then slide the two clamping rods 26 on the same connecting crossbar 25 towards each other. When the two clamping rods 26 on the same connecting crossbar 25 clamp the aluminum box workpiece, the electromagnetic chuck 261 in the clamping notch 260 magnetically fixes the outer wall of the aluminum box workpiece.

[0051] S2. The linkage platform 11 is slid on the first sliding rail 10 by an external drive device, so that it is located at the arc welding assembly 3. At this time, the welding wire in the wire storage box 31 is transported to the water-cooled welding gun 32 by the wire feeder 30, and the weld seam of the aluminum box workpiece is welded by the water-cooled welding gun 32.

[0052] S3. After welding, the linkage platform 11 is slid on the first sliding rail 10 to the three-dimensional detection component 4 by an external drive device. The rotating fixed clamping component 2 slides synchronously in the sliding horizontal groove 120 on the mounting horizontal plate 12 under the drive of the linkage platform 11. At this time, the appearance of the welded aluminum box workpiece is inspected by the three-dimensional laser scanner 41 and supplemented by the supplementary light 42. After the inspection, the aluminum box workpiece with unqualified appearance is picked up by the corresponding mechanical gripper 50 and placed on the first material conveying area 130, and then transported and collected by the corresponding second sliding rail 132. The aluminum box workpiece with qualified appearance is picked up by the corresponding mechanical gripper 50 and placed in the second material conveying area 131, and then transported and collected by the corresponding second sliding rail 132.

[0053] When in use, the S4 and 3D inspection components 4 activate the second hydraulic cylinder 403 according to the width of the aluminum box workpiece. The compression or extension of the second hydraulic cylinder 403 drives the bottom end of the vertical section of one of the L-shaped mounting brackets 401 to move back and forth, thereby adjusting the distance between the two L-shaped mounting brackets 401 to meet the needs of aluminum box workpieces of various sizes.

[0054] Example 3

[0055] The difference between this embodiment and Embodiment 1 is that:

[0056] like Figure 5 As shown, a rotating mounting plate 201 is vertically connected to the front side of the sliding mounting block 20. The rotating mounting plate 201 is provided with a drive gear 202. The drive gear 202 is connected to a second rotary motor 203 through a connecting shaft. The outer wall of the arc-shaped connecting frame 24 is provided with a driven rack 241 that meshes with the drive gear 202. The drive gear 202, the second rotary motor 203 and the driven rack 241 all adopt existing technology.

[0057] Example 4

[0058] The difference between this embodiment and Embodiment 2 is that:

[0059] When it is necessary to change the welding position of the aluminum box workpiece, turn on the two second rotary motors 203 and rotate them in opposite directions, so that the corresponding drive gears 202 rotate synchronously. At this time, the driven rack 241 located on the outer wall of the arc-shaped connecting frame 24 rotates, causing the arc-shaped sliding strip 240 to slide on the inner wall of the corresponding arc-shaped groove 231, thereby driving the arc-shaped connecting frame 24 to rotate. The two relatively distributed arc-shaped connecting frames 24 rotate in opposite directions, causing the aluminum box workpiece to rotate in the horizontal direction, thereby changing the position of the horizontal weld. When it is necessary to change the position of the vertical weld, change the placement direction of the aluminum box workpiece so that the weld is in a horizontal position, and then repeat the above operation.

[0060] Example 5

[0061] The difference between this embodiment and embodiment 3 is that:

[0062] like Figure 1 As shown, the discharge end of the second material conveying area 131 is connected to a second temporary storage platform 14. Mechanical grippers 50 are provided around the second temporary storage platform 14. The side wall of the second temporary storage platform 14 is connected to a return material platform 15 that is distributed parallel to the production platform 1. A feeding belt 16 is provided on the return material platform 15. A third temporary storage platform 17 is provided between the return material platform 15 and the inlet end of the production platform 1. Mechanical grippers 50 are provided on the third temporary storage platform 17. A three-dimensional detection component 4 is also provided on the second temporary storage platform 14.

[0063] The first material handling area 130 is equipped with a first storage box 133 for storing waste materials, and the second material handling area 131 is equipped with a second storage box 134 for storing qualified aluminum box workpieces.

[0064] The feeding belt 16 uses existing technology.

[0065] Example 6

[0066] The difference between this embodiment and embodiment 4 is that:

[0067] After the appearance of the welded aluminum box workpiece is inspected by the three-dimensional detection component 4 located on the production platform 1, the aluminum box workpiece with unqualified appearance is picked up by the corresponding mechanical gripper 50 and placed on the first material conveying area 130, and then transported and collected by the corresponding second sliding rail 132. The aluminum box workpiece with qualified appearance is picked up by the corresponding mechanical gripper 50 and placed in the second material conveying area 131, and then transported to the second temporary storage platform 14 by the corresponding second sliding rail 132. At the same time, the weld is inspected by the three-dimensional detection component 4 on the second temporary storage platform 14. When the weld is qualified, it is picked up by the corresponding mechanical gripper 50 and stored for later use. When the weld is unqualified, it is picked up by the mechanical gripper 50 and placed on the feeding belt 16 on the return material platform 15, and then transported to the third temporary storage platform 17 by the feeding belt 16. The mechanical gripper 50 on the third temporary storage platform 17 picks it up and places it on the production platform 1 for arc welding again. Then, the above process is repeated until the weld of the aluminum box workpiece meets the requirements.

[0068] When the appearance is not up to standard, the corresponding mechanical gripper 50 grabs the aluminum box workpiece and directly stores it in the first storage box 133. When the appearance and weld meet the usage requirements, the mechanical gripper 50 grabs the aluminum box workpiece and directly stores it in the second storage box 134.

[0069] Example 7

[0070] The difference between this embodiment and embodiment 5 is that:

[0071] like Figure 1 , 6 As shown, it also includes an air intake assembly 6 located at the upper end of the production platform 1. The air intake assembly 6 includes a spray washing tank 60 with an air inlet 600 on its side wall, a support umbrella frame 61 located around the air inlet 600, four air intake branch pipes 62 located at the upper end of the support umbrella frame 61, a folding connecting main pipe 63 for connecting each air intake branch pipe 62 and the air inlet 600, and an air intake head 64 located on each air intake branch pipe 62 at the end away from the folding connecting main pipe 63. The support umbrella frame 61 includes a first connecting block 612 connected to the side wall of the spray washing tank 60 via a first electric telescopic rod 610 and having four through holes 611 at its upper end corresponding to the air intake branch pipes 62, and four connecting support rods 613 hinged to the side wall of the first connecting block 612 opposite to the side wall of the first electric telescopic rod 610. The air intake branch pipes 62 are correspondingly located on the connecting support rods 613.

[0072] A second connecting block 615 is connected to the first connecting block 612 via a second electric telescopic rod 614. Each connecting rod 613 has an adjustment groove 616 on its inner wall. An adjustment rod 617 is hinged to the second connecting block 615 and is slidably connected to the adjustment groove 616. The adjustment rod 617 is a telescopic structure.

[0073] Among them, the air intake head 64, the first electric telescopic rod 610, and the second electric telescopic rod 614 all adopt existing technologies.

[0074] Example 8

[0075] The difference between this embodiment and embodiment 6 is that:

[0076] Harmful fumes generated during arc welding are drawn into corresponding intake branch pipes 62 by each intake head 64, and then collected by the folded connecting main pipe 63 before entering the spray washing box 60 for purification treatment, and finally discharged into the atmosphere. The intake branch pipes 62 are supported by the support umbrella frame 61, and the distance between each intake head 64 can be adjusted by the unfolding action of the support umbrella frame 61. Since the folded connecting main pipe 63 has a folded structure, the distance between each intake head 64 can be adjusted to further increase the adsorption area. The intake branch pipes 62 are clamped and fixed by the through port 611 on the first connecting block 612.

[0077] When not in operation, the second connecting block 615 is moved away from the first connecting block 612 by the extension of the second electric telescopic rod 614. At this time, each adjusting support rod 617 on the second connecting block 615 slides synchronously in the corresponding adjusting groove 616 and gradually changes with the moving length, so that each connecting support rod 613 moves closer to each other and folds.

Claims

1. An arc welding production line for aluminum housings of precision robots, characterized in that, It includes a production platform (1), a rotating and fixing clamping assembly (2) disposed on the production platform (1), an arc welding assembly (3), a three-dimensional detection assembly (4), and a sorting assembly (5) arranged from left to right on the upper end of the production platform (1). The production platform (1) is provided with a first sliding rail (10) along the length direction at the upper end. A linkage platform (11) is slidably connected on the first sliding rail (10). The production platform (1) is provided with mounting horizontal plates (12) on the front and rear sides respectively. The two mounting horizontal plates (12) are provided with sliding horizontal grooves (120) on opposite sides respectively. One end of the rotating fixed clamping assembly (2) is connected to the sliding horizontal groove (120), and the other end is used to clamp the aluminum box workpiece. The fixed clamping assemblies (2) located in the two sliding horizontal grooves (120) are symmetrically distributed. The arc welding assembly (3) is located on both sides of the first sliding rail (10). The arc welding assembly (3) includes a wire feeder (30), a wire storage box (31), and a water-cooled welding gun (32). The three-dimensional detection assembly (4) includes a mounting frame (40) located on the production platform (1) and at the upper end of the first sliding rail (10), a three-dimensional laser scanner (41) located at the bottom end of the mounting frame (40), and a supplementary light (42) located on the mounting frame (40). The mounting frame (40) includes L-shaped components symmetrically distributed on both sides of the first sliding rail (10) and having sliding openings (400) in the horizontal section. The L-shaped mounting bracket (401), the mounting crossbar (402) located between the two L-shaped mounting brackets (401) and extending to the sliding opening (400) on both sides, and the second hydraulic cylinder (403) used to connect the mounting crossbar (402) and the inner wall of the sliding opening (400), the three-dimensional laser scanner (41) located at the bottom end of the mounting crossbar (402), the supplementary light (42) located at the bottom end of the horizontal section of the L-shaped mounting bracket (401), and the bottom end of the vertical section of one of the L-shaped mounting brackets (401) slidingly connected to the bottom end of the production platform (1) along the width direction; The production platform (1) is provided with a first temporary storage platform (13) at the discharge end, and a first material conveying area (130) and a second material conveying area (131) are provided on the front and rear sides of the first temporary storage platform (13). The first material conveying area (130) and the second material conveying area (131) are respectively provided with a second sliding rail (132) perpendicular to the first sliding rail (10). The sorting component (5) is composed of mechanical grippers (50) respectively provided on the front and rear sides of the first temporary storage platform (13). The rotating fixed clamping assembly (2) includes a sliding mounting block (20) slidably connected to the inner wall of the sliding transverse groove (120), a threaded mounting shaft (21) disposed in the sliding transverse groove (120) along the length direction and passing through the sliding mounting block (20), a first rotary motor (22) connected to one end of the threaded mounting shaft (21), an arc-shaped mounting plate (23) connected to the sliding mounting block (20) via a first hydraulic cylinder (230) and having an arc-shaped groove (231) on its inner wall, an arc-shaped connecting frame (24) whose outer wall is slidably connected to the inner wall of the arc-shaped groove (231) via an arc-shaped sliding strip (240), a connecting crossbar (25) connected to the front end of the arc-shaped connecting frame (24), and two clamping rods (26) perpendicularly distributed to the connecting crossbar (25) and whose one end can slide left and right along the side wall of the connecting crossbar (25). The discharge end of the second material conveying area (131) is connected to a second temporary storage platform (14). The second temporary storage platform (14) is surrounded by mechanical grippers (50). The side wall of the second temporary storage platform (14) is connected to a return platform (15) that is parallel to the production platform (1). The return platform (15) is equipped with a feeding belt (16). A third temporary storage platform (17) is provided between the return platform (15) and the inlet end of the production platform (1). The third temporary storage platform (17) is equipped with mechanical grippers (50). The second temporary storage platform (14) is also equipped with a three-dimensional detection component (4). The appearance of the welded aluminum box workpiece is detected by the three-dimensional detection component (4) located on the production platform (1). At the same time, the weld is detected by the three-dimensional detection component (4) on the second temporary storage platform (14).

2. The arc welding production line for precision robot aluminum housings according to claim 1, characterized in that, The two clamping rods (26) are provided with clamping recesses (260) on opposite sides, and multiple electromagnetic chucks (261) are provided in the clamping recesses (260).

3. The arc welding production line for aluminum housings of precision robots according to claim 1, characterized in that, A rotating mounting plate (201) is vertically connected to the front side of the sliding mounting block (20). A drive gear (202) is provided on the rotating mounting plate (201). The drive gear (202) is connected to a second rotating motor (203) through a connecting shaft. The outer wall of the arc-shaped connecting frame (24) is provided with a driven rack (241) that meshes with the drive gear (202).

4. The arc welding production line for aluminum housings of precision robots according to claim 1, characterized in that, The first material handling area (130) is provided with a first storage box (133) for storing waste materials, and the second material handling area (131) is provided with a second storage box (134) for storing qualified aluminum box workpieces.

5. The arc welding production line for aluminum housings of precision robots according to claim 1, characterized in that, It also includes an air intake assembly (6) located at the upper end of the production platform (1). The air intake assembly (6) includes a spray washing box (60) with an air inlet (600) on its side wall, a support umbrella frame (61) located around the air inlet (600), a plurality of air intake branch pipes (62) located at the upper end of the support umbrella frame (61), a folded connecting main pipe (63) for connecting each of the air intake branch pipes (62) and the air inlet (600), and a folded connecting main pipe (63) located on each of the air intake branch pipes (62) away from the folded connecting main pipe. 63) The suction head (64) at one end, the supporting umbrella frame (61) includes a first connecting block (612) connected to the side wall of the spray washing tank (60) via a first electric telescopic rod (610) and having multiple through holes (611) corresponding to the suction branch pipes (62) at the upper end, and multiple connecting rods (613) hinged to the side wall of the first connecting block (612) opposite to the first electric telescopic rod (610), and the suction branch pipes (62) are correspondingly arranged on the connecting rods (613).

6. The arc welding production line for precision robot aluminum housings according to claim 5, characterized in that, The first connecting block (612) is connected to the second connecting block (615) via the second electric telescopic rod (614). Each connecting rod (613) has an adjustment groove (616) on its inner wall. The second connecting block (615) is hinged to an adjustment rod (617) that corresponds to and is slidably connected to the adjustment groove (616). The adjustment rod (617) is a telescopic structure.

7. An arc welding method for aluminum housings of precision robots, based on the arc welding production line for aluminum housings of precision robots according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Place the aluminum box workpiece that needs to be arc welded on the upper end of the linkage platform (11) on the production platform (1), so that the weld is in the horizontal direction, and clamp and fix the aluminum box workpiece by two relatively distributed rotating and fixing clamping components (2). S2. The linkage platform (11) is slid on the first sliding rail (10) by an external drive device, so that it is located at the arc welding assembly (3). At this time, the welding wire in the wire storage box (31) is transported to the water-cooled welding gun (32) by the wire feeder (30), and the weld seam of the aluminum box workpiece is welded by the water-cooled welding gun (32). S3. After welding, the linkage platform (11) is slid on the first sliding rail (10) to the three-dimensional detection component (4) by the external drive device. The rotating fixed clamping component (2) slides synchronously in the sliding horizontal groove (120) on the mounting horizontal plate (12) under the driving action of the linkage platform (11). At this time, the appearance of the welded aluminum box workpiece is inspected by the three-dimensional laser scanner (41) and supplemented by the supplementary light (42). After the inspection, the aluminum box workpiece with unqualified appearance is picked up by the corresponding mechanical gripper (50) and placed on the first material transport area (130), and transported and collected by the corresponding second sliding rail (132). The aluminum box workpiece with qualified appearance is picked up by the corresponding mechanical gripper (50) and placed in the second material transport area (131), and transported and collected by the corresponding second sliding rail (132). S4. When the three-dimensional detection component (4) is in use, the second hydraulic cylinder (403) is activated according to the width of the aluminum box workpiece. The compression or extension action of the second hydraulic cylinder (403) drives the bottom of the vertical section of one of the L-shaped mounting brackets (401) to move back and forth, thereby achieving the purpose of adjusting the distance between the two L-shaped mounting brackets (401) to meet the use of aluminum box workpieces of various sizes.

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