Automatic automobile part nut projection welding workstation

Abstract

The invention provides an automatic automobile part nut projection welding workstation, and relates to the technical field of automobile part welding. Comprising a workbench, a control box, a vibration disc, a part conveyor, a photographing positioning column, a 2D camera, a first four-axis robot, a second four-axis robot, a projection welding table, a projection welding vertical frame, a discharging sliding way, a material collecting box, a welding air cylinder, an inspection material pushing frame, an inspection camera and a material pushing shaft. An integrated control box is arranged on the workbench; a part conveyor and a vibration disc are arranged on one side of the workbench, and the part conveyor and the vibration disc are distributed in a perpendicular state. The spring in the spring box is tensioned when the welding head moves downwards, energy is released after welding is completed, and the smoke suction wheel is driven to rotate. The smoke suction wheel sucks away smoke at the welding position through the smoke suction box and the smoke suction pipe, and the smoke is exhausted into an external smoke suction device through the smoke exhaust pipe. By means of the design, the harm of welding smoke dust to the environment and operators is effectively reduced, and the safety and environmental friendliness of the welding process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile component welding, and in particular to an automated automobile component nut projection welding workstation. Background Art

[0002] First, in the traditional nut projection welding process, the positioning and grasping of parts usually rely on manual operation or simple robotic arms. This method is not only inefficient, but also easily affected by human factors, resulting in inaccurate positioning, loose grasping and other problems. At the same time, since the operating environment is usually harsh, there are dangerous factors such as high temperature and smoke, which poses a threat to the health and safety of operators.

[0003] Secondly, traditional projection welding equipment can only process a single workpiece and cannot process multiple workpieces in parallel. This not only limits the improvement of production efficiency, but also increases the space and cost of the equipment. In addition, due to the lack of effective isolation and scheduling mechanism between workpieces, interference and collision are prone to occur, affecting welding quality and equipment life.

[0004] In the welding process, traditional projection welding equipment usually lacks an effective smoke treatment mechanism. The smoke generated during welding not only pollutes the environment, but also poses a threat to the health of operators. At the same time, the obstruction of smoke will also affect the monitoring and evaluation of welding quality.

[0005] After welding is completed, the traditional projection welding process usually relies on manual inspection and classification of workpieces. This method is not only inefficient, but also prone to problems such as missed inspections and misjudgments. In particular, for the handling of unqualified workpieces, there is often a lack of effective automation mechanisms, resulting in waste of resources and increased costs. Summary of the invention

[0006] The present invention relates to an automated automobile component nut projection welding workstation, which can automatically complete functions such as positioning and grasping parts, parallel processing of multiple workpieces, smoke treatment, automatic inspection and classification of workpieces, so as to improve production efficiency and product quality and reduce production costs and safety risks.

[0007] The present invention provides an automated projection welding workstation for automobile parts nuts, specifically comprising: a workbench, a control box, a vibration plate, a parts conveyor, a photographing positioning column, a 2D camera, a first four-axis robot, a second four-axis robot, a projection welding table, a projection welding stand, a discharge slide, a collection box, a welding cylinder, an inspection pusher rack, an inspection camera and a pusher shaft; an integrated control box is arranged on the workbench; a parts conveyor and a vibration plate are arranged on one side of the workbench, and the parts conveyor and the vibration plate are distributed in a vertical state; a photographing positioning column is vertically arranged on the workbench between the ends close to the parts conveyor and the vibration plate, and a photographing positioning column is arranged on the photographing positioning column; a symmetrical first four-axis robot and a second four-axis robot are installed on the workbench on the side of the photographing positioning column away from the parts conveyor and the vibration plate, and the first four-axis robot is close to the zero position. Parts conveyor, the second four-axis robot is close to the vibration plate; a projection welding table is fixedly installed on the workbench on the other side of the first four-axis robot and the second four-axis robot; a projection welding frame is fixedly installed on the projection welding table, and a welding cylinder is vertically suspended in the middle of the projection welding frame close to one end of the first four-axis robot and the second four-axis robot, and a welding head is fixedly connected downward at the end of the piston rod of the welding cylinder; an inspection pusher is vertically suspended in the middle of the other end of the projection welding frame, and a downward inspection camera is fixedly installed in the middle of the lower end of the inspection pusher; a pusher shaft is horizontally rotatably installed on the inspection pusher above the inspection camera, and both ends of the pusher shaft respectively pass through the side plates corresponding to the projection welding frame; a unloading slide is rotatably installed at the position outside the projection welding frame at one end of the inspection pusher, and the other end of the unloading slide is placed above the aggregate box.

[0008] Optionally, there are convenient grooves on the left and right side walls at the end of the conveying pipe of the vibration plate, and the convenient grooves are used to facilitate the second four-axis robot to grab the nuts on the conveying pipe of the vibration plate.

[0009] Optionally, the 2D camera on the photographing positioning column faces the first four-axis robot.

[0010] Optionally, a transposition motor is vertically mounted at the bottom of the projection welding platform corresponding to the position below the projection welding stand, and transposition end shafts are rotatably mounted at both ends of the projection welding platform in the conveying direction, one transposition end shaft is fixedly connected to the rotating shaft of the transposition motor, and the two transposition end shafts are rotatably connected via a belt;

[0011] The convex welding platforms on the left and right sides of the transposition end shaft are respectively provided with transposition stroke holes that penetrate up and down symmetrically along the conveying direction, and the belt between the transposition stroke hole and the transposition end shaft is opposite to each other up and down, and the convex welding platforms outside the two transposition stroke holes are respectively fixedly installed with parallel transposition guide rails, and a transverse shift seat is slidably installed on the transposition guide rail through a slider, and the transverse shift seats on the left and right transposition guide rails are staggered. The inner end of the transverse shift seat is vertically fixedly connected with a transposition connecting plate, and the transposition connecting plate passes downward through the transposition stroke hole and is fixedly connected to the belt; a welding bearing seat is installed on the transverse shift seat for horizontal sliding through the slider, and the upper end face of the welding bearing seat is a groove surface structure that is open to the side where the unloading slide is located, so as to facilitate the unloading of the welded workpiece onto the unloading slide, and a pulling arm is vertically fixedly installed in the outer end side wall of the welding bearing seat in the same sliding direction as the welding bearing seat, and a hanging shaft is provided at the end of the pulling arm.

[0012] Optionally, a guide rail frame is symmetrically installed at a position near the lower end of the convex welding stand, and the guide rail frame is a structure with a middle convex shape. The hanging shaft of the pulling arm is slidably placed in the corresponding guide rail frame. During the movement of the welding bearing seat driven by the transverse seat, the welding bearing seat moves laterally under the guidance of the guide rail frame through the pulling arm. When the welding bearing seats on the left and right sides are at the two end positions of the transposition guide rail, they are both at the middle position of the innermost end, and when they are at the middle position of the transposition guide rail, the two welding bearing seats are in a state of being parallel and farthest apart, and do not interfere with each other.

[0013] A pushing motor is fixedly installed on the outer frame body corresponding to the pushing shaft on the projection welding stand, and the rotating shaft of the pushing motor is fixedly connected with the pushing shaft.

[0014] Optionally, a unloading adjustment cylinder is rotatably installed at the bottom of the unloading slide, and the other end of the unloading adjustment cylinder is rotatably connected to the bottom of the side of the convex welding platform. The piston rod of the unloading adjustment cylinder contracts, the unloading slide is flipped up and down, and the angle is adjusted.

[0015] Optionally, the material collection box is provided with two cavities, the cavity close to the convex welding station is used to hold qualified products, and the cavity far away from the convex welding station is used to hold unqualified products. The upper end of the material collection box cavity for unqualified products is inclined to be provided with a docking slide, and the unloading slide is flipped up and connected to the docking slide.

[0016] Optionally, a welding head is fixedly mounted on the lower end of the piston rod of the welding cylinder;

[0017] A spring box is fixedly installed on the side wall of the welding cylinder, and a spiral spring is coiled inside the spring box. One end of the spring is fixedly connected to the piston rod on the upper end of the welding head downward, and a smoking wheel is rotatably installed on the middle part of the spring box through a rotating shaft. The smoking wheel is wrapped on the outer wall of the spring box through the smoking box, and the other end of the spring is fixedly connected to the rotating shaft of the smoking wheel. A smoking pipe is connected to the middle part of the outer end of the smoking box, and the end of the smoking pipe extends to the lower end of the piston rod of the welding cylinder. One end of the smoking box is connected to an exhaust pipe in a tangential direction upward, and the end of the exhaust pipe is connected to an external smoking device. The piston rod of the welding cylinder moves downward, and the welding head welds the nuts and parts below. The spring follows the piston rod of the welding cylinder to move downward and is tightened. After welding is completed, the piston rod of the welding cylinder moves upward and resets, the spring unloads force, and the smoking wheel rotates to suck away the smoke at the welding point through the smoking pipe.

[0018] Optionally, the left and right sides of the lower end of the inspection pusher rack are respectively provided with stop plates inclined downward, and the left and right stop plates are distributed in an inverted V-shaped structure, wherein the stop plate in the convex welding frame is made of an electromagnet.

[0019] Optionally, two symmetrical pushing arms are vertically fixedly connected to the pushing shaft, and a pushing rod is fixedly connected between the lower ends of the pushing arms. When the pushing arms are in a vertical state, the pushing rod is tangent to the upper end surface of the welding supporting seat directly below. The pushing arms are made of iron material. Under normal conditions, the stop plate with an electromagnet adsorbs and fixes the pushing arms. After the inspection camera has checked the parts below, the stop plate of the electromagnet is powered off and demagnetized, the pushing motor starts working, the pushing arm drives the pushing rod to rotate to push the parts on the welding supporting seat into the unloading slide, and the pushing motor reverses and resets.

[0020] The present invention provides an automated projection welding workstation for automobile parts nuts, which has the following beneficial effects:

[0021] In the present invention, the D camera on the camera positioning column plays a key role in the parts positioning and grasping process. The camera faces the first four-axis robot and can accurately capture the welding position information of the parts, providing strong support for the precise operation of the subsequent robots. Based on this information, the first four-axis robot and the second four-axis robot can accurately grasp the parts and nuts and place them on the welding bearing seat on the convex welding table. This process not only realizes the automatic matching and positioning of the parts and nuts, but also greatly improves the accuracy and efficiency of the operation.

[0022] The design of the projection welding station is also full of innovation. The transposition motor at the bottom drives the transposition connecting plate and the welding bearing seat to move on the transposition guide rail through the transposition end shaft and belt, so that the workstation can process multiple workpieces at the same time, greatly improving work efficiency. More importantly, this design avoids interference between workpieces and ensures the smooth progress of the welding process.

[0023] The welding process is the core part of the workstation. The piston rod of the welding cylinder moves down, driving the welding head to weld the nuts and parts below. It is worth mentioning that the spring box and the smoke device on the side wall of the welding cylinder provide additional safety for the welding process. The spring in the spring box is tightened when the welding head moves down, and releases energy after welding is completed, driving the smoke wheel to rotate. The smoke wheel absorbs the smoke from the welding site through the smoke box and the smoke pipe, and discharges it to the external smoke device through the smoke exhaust pipe. This design not only effectively reduces the harm of welding smoke to the environment and operators, but also improves the safety and environmental protection of the welding process.

[0024] After welding is completed, the inspection camera will inspect the welded workpiece. The electromagnetic stop plate plays a key role at this time. It absorbs the push arm to prevent it from rotating and ensure the stability of the workpiece during the inspection process. When the inspection camera confirms that the workpiece is qualified, the electromagnetic stop plate is powered off and demagnetized, and the push motor starts to work, pushing the push arm to drive the push rod to rotate, and push the workpiece on the welding bearing seat into the unloading chute. If the workpiece is unqualified, the unloading chute will flip up under the drive of the unloading adjustment cylinder, connect with the docking chute, and send the unqualified workpiece into the corresponding unqualified product cavity in the collection box. This process realizes the automatic inspection and classification of workpieces, greatly improving the intelligence and production efficiency of the workstation.

[0025] Finally, when the workpieces are pushed into the unloading chute, they will slide along the chute into the corresponding qualified product cavity in the collection box. The workflow of the entire automated automotive parts nut projection welding workstation is now completed. This process not only achieves a high degree of automation and intelligence, but also ensures the dual improvement of production efficiency and product quality through precise control and scheduling. This innovative workstation design not only provides a new solution for the automated production of automotive parts nuts projection welding, but also provides useful reference and inspiration for automated production in other similar fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0027] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0028] In the attached picture:

[0029] Figure 1 A schematic diagram of the first axial view of the present invention is shown;

[0030] Figure 2 A second axial structural schematic diagram of the present invention is shown;

[0031] Figure 3The schematic diagram of the axial structure of the convex welding platform part of the present invention is shown;

[0032] Figure 4 The schematic diagram of the lower axial structure of the convex welding platform of the present invention is shown;

[0033] Figure 5 It shows the axial structural schematic diagram of the projection welding stand, welding cylinder and inspection pusher frame of the present invention;

[0034] Figure 6 A partial structural schematic diagram of a welding cylinder of the present invention is shown;

[0035] Figure 7 The present invention shows Figure 6 A is a schematic diagram of the structure of the enlarged part;

[0036] Figure 8 It shows a schematic diagram of the axial structure of the convex welding platform of the present invention in an exposed state;

[0037] Fig. 9 It shows a schematic diagram of the axial structure of the convex welding platform of the present invention in a partially disassembled state;

[0038] Fig.10 The schematic diagram of the axial structure of the convex welding platform part of the present invention in a further disassembled state is shown.

[0039] Reference numerals list

[0040] 1. Workbench;

[0041] 2. Control box;

[0042] 3. Vibrating plate; 301. Stool taking slot;

[0043] 4. Parts conveyor;

[0044] 5. Photo positioning column; 501. 2D camera;

[0045] 6. The first four-axis robot;

[0046] 7. Second four-axis robot;

[0047] 8. convex welding table; 801. transposition motor; 802. transposition guide rail; 803. transposition travel hole; 804. transposition end shaft; 805. transposition connecting plate; 806. transverse seat; 807. welding bearing seat; 808. pulling arm;

[0048] 9. Projection welding stand; 901. Guide rail frame; 902. Pushing motor;

[0049] 10. Unloading slideway; 1001. Unloading adjustment cylinder;

[0050] 11. Aggregate box; 1101. Docking slide;

[0051] 12. Welding cylinder; 1201. Welding head; 1202. Spring box; 1203. Spring; 1204. Smoking box; 1205. Smoking pipe; 1206. Smoke exhaust pipe; 1207. Smoking wheel;

[0052] 13. Check the push rack; 1301. Stop plate;

[0053] 14. Check the camera;

[0054] 15. Pushing shaft; 1501. Pushing arm; 1502. Pushing rod. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] Example 1: Please refer to Figures 1 to 10 :

[0057] The present invention proposes an automated projection welding workstation for automobile parts nuts, comprising: a workbench 1, a control box 2, a vibration plate 3, a parts conveyor 4, a photographing positioning column 5, a 2D camera 501, a first four-axis robot 6, a second four-axis robot 7, a projection welding table 8, a projection welding stand 9, a discharge slide 10, a collection box 11, a welding cylinder 12, an inspection pusher 13, an inspection camera 14 and a pusher shaft 15; an integrated control box 2 is provided on the workbench 1; a parts conveyor 4 and a vibration plate 3 are provided on one side of the workbench 1, and the parts conveyor 4 and the vibration plate 3 are distributed in a vertical state; a photographing positioning column 5 is vertically provided on the workbench 1 between the end where the parts conveyor 4 and the vibration plate 3 are close to each other, and a photographing positioning column 5 is provided on the photographing positioning column 5; a symmetrical first four-axis robot 6 and a second four-axis robot 7 are installed on the workbench 1 on the side where the photographing positioning column 5 is far away from the parts conveyor 4 and the vibration plate 3, and the first four-axis robot 6 is close to the zero The first four-axis robot 6 and the second four-axis robot 7 are provided with a workbench 1 on the other side of the first four-axis robot 6 and the second four-axis robot 7. A projection welding table 8 is fixedly installed on the projection welding table 8. A projection welding frame 9 is fixedly installed on the projection welding table 8. A welding cylinder 12 is vertically suspended in the middle of the projection welding frame 9 close to one end of the first four-axis robot 6 and the second four-axis robot 7. The end of the piston rod of the welding cylinder 12 is fixedly connected downward with a welding head 1201. An inspection pusher rack 13 is vertically suspended in the middle of the other end of the projection welding frame 9. A downward inspection camera 14 is fixedly installed in the middle of the lower end of the inspection pusher rack 13. A pusher shaft 15 is horizontally rotatably installed on the inspection pusher rack 13 above the inspection camera 14, and both ends of the pusher shaft 15 pass through the side plates corresponding to the projection welding frame 9 respectively. A discharge slide 10 is rotatably installed at the outer side of the projection welding frame 9 at the end where the inspection pusher rack 13 is located, and the other end of the discharge slide 10 is placed above the collecting box 11.

[0058] Among them, there are convenient grooves 301 on the left and right side walls at the end of the conveying pipe of the vibration plate 3, and the convenient grooves 301 are used to facilitate the second four-axis robot 7 to grab the nuts on the conveying pipe of the vibration plate 3.

[0059] The 2D camera 501 on the photo positioning column 5 faces the first four-axis robot 6 .

[0060] Among them, a transposition motor 801 is vertically mounted at the position below the projection welding stand 9 corresponding to the bottom of the projection welding table 8, and transposition end shafts 804 are rotatably mounted at both ends of the projection welding table 8 in the conveying direction, one transposition end shaft 804 is fixedly connected to the rotating shaft of the transposition motor 801, and the two transposition end shafts 804 are rotatably connected through a belt;

[0061] The convex welding platforms 8 on the left and right sides of the transposition end shaft 804 are respectively provided with transposition travel holes 803 symmetrically penetrating up and down along the conveying direction. The transposition travel holes 803 and the belt between the transposition end shaft 804 are opposite to each other up and down. Parallel transposition guide rails 802 are respectively fixedly installed on the convex welding platforms 8 outside the two transposition travel holes 803. A transverse shift seat 806 is slidably installed on the transposition guide rails 802 through a slider. The transverse shift seats 806 on the left and right transposition guide rails 802 are staggered, and the inner ends of the transverse shift seats 806 are fixedly connected vertically downward. There is a transposition connecting plate 805, which passes downward through the transposition stroke hole 803 and is fixedly connected to the belt; a welding bearing seat 807 is installed on the transverse displacement seat 806 through a slider for horizontal sliding, and the upper end surface of the welding bearing seat 807 is a groove surface structure open to the side where the unloading chute 10 is located, which is convenient for unloading the welded workpiece onto the unloading chute 10, and a pulling arm 808 is vertically fixedly installed in the outer end side wall of the welding bearing seat 807 which is consistent with the sliding direction of the welding bearing seat 807, and a hanging shaft is provided at the end of the pulling arm 808.

[0062] Among them, a guide rail frame 901 is symmetrically installed at the position near the lower end of the convex welding stand 9. The guide rail frame 901 is a structure with a middle convex shape. The hanging shaft of the pulling arm 808 is slidably placed in the corresponding guide rail frame 901. The transverse seat 806 drives the welding bearing seat 807 to move. The welding bearing seat 807 moves laterally under the guidance of the guide rail frame 901 through the pulling arm 808. When the welding bearing seats 807 on the left and right sides are at the two end positions of the transposition guide rail 802, they are both at the middle position of the innermost end. When they are at the middle position of the transposition guide rail 802, the two welding bearing seats 807 are in a state of being parallel and farthest apart, and do not interfere with each other.

[0063] A pushing motor 902 is fixedly installed on the outer frame body of the projection welding frame 9 corresponding to the pushing shaft 15, and the rotating shaft of the pushing motor 902 is fixedly connected to the pushing shaft 15.

[0064] Among them, a unloading adjustment cylinder 1001 is rotatably installed at the bottom of the unloading slide 10, and the other end of the unloading adjustment cylinder 1001 is rotatably connected to the bottom of the side of the convex welding platform 8. When the piston rod of the unloading adjustment cylinder 1001 contracts, the unloading slide 10 flips up and down and the angle is adjusted.

[0065] Among them, the collection box 11 is provided with two cavities, the cavity close to the convex welding platform 8 is used to hold qualified products, and the cavity far away from the convex welding platform 8 is used to hold unqualified products. The upper end of the cavity of the collection box 11 for unqualified products is inclinedly provided with a docking slide 1101, and the unloading slide 10 is turned up and connected to the docking slide 1101.

[0066] Wherein, a welding head 1201 is fixedly mounted on the lower end of the piston rod of the welding cylinder 12;

[0067] A spring box 1202 is fixedly installed on the side wall of the welding cylinder 12, and a spiral spring 1203 is arranged inside the spring box 1202. One end of the spring 1203 is fixedly connected to the piston rod at the upper end of the welding head 1201 downwardly. A smoking wheel 1207 is also rotatably installed on the middle part of the spring box 1202 through a rotating shaft. The smoking wheel 1207 is wrapped on the outer wall of the spring box 1202 through a smoking box 1204. The other end of the spring 1203 is fixedly connected to the rotating shaft of the smoking wheel 1207. A smoking pipe 1205 is connected to the middle part of the outer end of the smoking box 1204. The end of 1205 extends to the lower end of the piston rod of the welding cylinder 12, and one end of the smoking box 1204 is connected to a smoke exhaust pipe 1206 in a tangential direction upward. The end of the smoke exhaust pipe 1206 is connected to an external smoking device. The piston rod of the welding cylinder 12 moves downward, and the welding head 1201 welds the nuts and parts below. The spring 1203 follows the piston rod of the welding cylinder 12 to move downward and tighten. After the welding is completed, the piston rod of the welding cylinder 12 moves upward and resets, the spring 1203 unloads the force, and the smoking wheel 1207 rotates through the smoking pipe 1205 to suck away the smoke at the welding point.

[0068] Among them, the left and right sides of the lower end of the inspection pusher rack 13 are respectively provided with stop plates 1301 inclined downward, and the left and right stop plates 1301 are distributed in an inverted V-shaped structure, and the stop plate 1301 in the convex welding frame 9 is made of an electromagnet.

[0069] Embodiment 2, on the basis of embodiment 1, two symmetrical pushing arms 1501 are vertically fixedly connected to the pushing shaft 15, and a pushing rod 1502 is fixedly connected between the lower ends of the pushing arms 1501. When the pushing arms 1501 are in a vertical state, the pushing rod 1502 is tangent to the upper end surface of the welding support seat 807 just below. The pushing arms 1501 are made of iron material. Under normal conditions, the stop plate 1301 with an electromagnet adsorbs and fixes the pushing arms 1501. After the inspection camera 14 has inspected the parts below, the stop plate 1301 of the electromagnet is powered off and demagnetized, and the pushing motor 902 starts to work. The pushing arms 1501 drive the pushing rod 1502 to rotate to push the parts on the welding support seat 807 into the unloading chute 10, and the pushing motor 902 is reversed and reset.

[0070] The working principle of this embodiment:

[0071] At the initial stage of the workstation operation, the vibration plate 3 starts to work and transports the nuts to the end of its conveying pipe in an orderly manner. The end of the conveying pipe is designed with a convenient groove 301. This special design enables the second four-axis robot 7 to easily and accurately grab the nuts. At the same time, the parts conveyor 4 is also running continuously, transporting the automotive parts to be welded to the designated position in the workstation.

[0072] After the first four-axis robot 6 clamps the part to the specified position, the 2D camera 501 on the photo positioning column 5 will take a photo of the welding position of the part. This 2D camera 501 faces the first four-axis robot 6 to ensure that the accurate position information of the part can be captured, providing accurate guidance for subsequent robot operations.

[0073] Next, the first four-axis robot 6 and the second four-axis robot 7 respectively accurately grab the parts and nuts according to the positioning information provided by the 2D camera 501, and place them on the welding support seat 807 on the projection welding table 8. At this time, the transposition motor 801 at the bottom of the projection welding table 8 starts to work, and drives the transposition connecting plate 805 and the welding support seat 807 to move on the transposition guide rail 802 through the transposition end shaft 804 and the belt. This design enables the workstation to process multiple workpieces at the same time, greatly improving work efficiency, and without interference.

[0074] During the welding process, the piston rod of the welding cylinder 12 moves downward, driving the welding head 1201 to weld the nuts and parts below. It is worth noting that a spring box 1202 and a smoking device are also fixedly installed on the side wall of the welding cylinder 12. When the welding head 1201 moves downward, the spring 1203 will be tightened; and when the welding is completed, when the piston rod of the welding cylinder 12 moves upward and resets, the spring 1203 will release energy and drive the smoking wheel 1207 to rotate. The smoking wheel 1207 absorbs the smoke from the welding site through the smoking box 1204 and the smoking pipe 1205, and discharges it to the external smoking device through the exhaust pipe 1206, thereby realizing the smoke treatment during the welding process.

[0075] After welding is completed, the inspection camera 14 will inspect the welded workpiece. At this time, the electromagnet stop plate 1301 in the projection welding stand 9 will absorb the push arm 1501 to prevent it from rotating. When the inspection camera 14 confirms that the workpiece is qualified, the electromagnet stop plate 1301 will be powered off and demagnetized, and the push motor 902 will start working. The push arm 1501 on the push shaft 15 will drive the push rod 1502 to rotate, pushing the workpiece on the welding support seat 807 into the unloading chute 10. If the workpiece is unqualified, the unloading chute 10 will flip up under the drive of the unloading adjustment cylinder 1001, and connect with the docking chute 1101, and send the unqualified workpiece into the corresponding unqualified product cavity in the collection box 11.

[0076] Finally, after the workpieces are pushed into the unloading chute 10, they will slide along the chute into the corresponding qualified product cavity in the collecting box 11. In this way, the workflow of the entire automated automotive parts nut projection welding workstation is completed. The entire process is highly automated and intelligent, greatly improving production efficiency and product quality.

[0077] In this article, there are a few points to note:

[0078] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0079] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0080] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated automobile component nut projection welding workstation, comprising: A workbench (1), a control box (2), a vibration plate (3), a parts conveyor (4), a camera positioning column (5), a 2D camera (501), a first four-axis robot (6), a second four-axis robot (7), a projection welding table (8), a projection welding stand (9), a discharge slide (10), a collection box (11), a welding cylinder (12), an inspection pusher rack (13), an inspection camera (14) and a pusher shaft (15); the workbench (1) is provided with an integrated control box (2); it is characterized in that one side of the workbench (1) is provided with a parts conveyor The parts conveyor (4) and the vibration plate (3) are arranged in a vertical state; a photographing positioning column (5) is vertically arranged on the workbench (1) between the ends of the parts conveyor (4) and the vibration plate (3), and a photographing positioning column (5) is arranged on the photographing positioning column (5); a symmetrical first four-axis robot (6) and a second four-axis robot (7) are installed on the workbench (1) on the side of the photographing positioning column (5) away from the parts conveyor (4) and the vibration plate (3), and the first four-axis robot (6) is close to the parts conveyor (4), the second four-axis robot (7) is close to the vibration plate (3); a projection welding table (8) is fixedly installed on the workbench (1) on the other side of the first four-axis robot (6) and the second four-axis robot (7); a projection welding stand (9) is fixedly installed on the projection welding table (8), and a welding cylinder (12) is vertically suspended in the middle of the projection welding stand (9) near one end of the first four-axis robot (6) and the second four-axis robot (7), and the end of the piston rod of the welding cylinder (12) is fixedly connected downward with a welding head (1201); the other end of the projection welding stand (9) An inspection pusher rack (13) is vertically suspended in the middle, and a downward inspection camera (14) is fixedly installed in the middle of the lower end of the inspection pusher rack (13); a pusher shaft (15) is rotatably installed on the inspection pusher rack (13) above the inspection camera (14), and both ends of the pusher shaft (15) are respectively passed through the side plates corresponding to the projection welding frame (9); a discharge slide (10) is rotatably installed at a position outside the projection welding frame (9) at one end of the inspection pusher rack (13), and the other end of the discharge slide (10) is placed above the collection box (11).

2. The automated automobile component nut projection welding workstation according to claim 1, characterized in that: The left and right side walls at the end of the conveying pipe of the vibration plate (3) are provided with convenient grooves (301), and the convenient grooves (301) are used to facilitate the second four-axis robot (7) to grab the nuts on the conveying pipe of the vibration plate (3).

3. The automated automobile component nut projection welding workstation according to claim 1, characterized in that: The 2D camera (501) on the photographing positioning column (5) faces the first four-axis robot (6).

4. The automated automobile component nut projection welding workstation according to claim 1, characterized in that: A transposition motor (801) is vertically mounted at a position corresponding to the bottom of the projection welding stand (8) below the projection welding stand (9), and transposition end shafts (804) are rotatably mounted at both ends of the projection welding stand (8) in the conveying direction, one transposition end shaft (804) is fixedly connected to the rotating shaft of the transposition motor (801), and the two transposition end shafts (804) are rotatably connected via a belt; The convex welding platforms (8) on the left and right sides of the transposition end shaft (804) are respectively provided with transposition travel holes (803) symmetrically extending up and down along the conveying direction. The belt between the transposition travel holes (803) and the transposition end shaft (804) is vertically opposed to each other. Parallel transposition guide rails (802) are respectively fixedly installed on the convex welding platforms (8) outside the two transposition travel holes (803). A transverse shift seat (806) is slidably installed on the transposition guide rails (802) through a slider. The transverse shift seats (806) on the left and right transposition guide rails (802) are staggered, and the inner ends of the transverse shift seats (806) are fixed vertically downward. A transposition connecting plate (805) is connected, and the transposition connecting plate (805) passes downward through the transposition stroke hole (803) and is fixedly connected to the belt; a welding bearing seat (807) is installed on the transverse displacement seat (806) through a slider for transverse sliding, and the upper end surface of the welding bearing seat (807) is a groove surface structure open to the side where the unloading slideway (10) is located, so as to facilitate the unloading of the welded workpiece onto the unloading slideway (10), and a pulling arm (808) is vertically fixedly installed in the outer end side wall of the welding bearing seat (807) in the same sliding direction as the welding bearing seat (807), and a hanging shaft is provided at the end of the pulling arm (808).

5. The automated automobile component nut projection welding workstation according to claim 4, characterized in that: The convex welding stand (9) is symmetrically provided with a guide rail frame (901) near the lower end. The guide rail frame (901) is a structure with a middle convex shape. The hanging shaft of the pulling arm (808) is slidably placed in the corresponding guide rail frame (901). The transverse displacement seat (806) drives the welding support seat (807). During the movement, the welding support seat (807) moves laterally under the guidance of the guide rail frame (901) through the pulling arm (808). When the welding support seats (807) on the left and right sides are at the two end positions of the transposition guide rail (802), they are both at the middle position of the innermost end. When they are at the middle position of the transposition guide rail (802), the two welding support seats (807) are in a state of being parallel and at the farthest distance from each other, and do not interfere with each other. A pushing motor (902) is fixedly mounted on the outer frame body of the projection welding stand (9) corresponding to the pushing shaft (15), and the rotating shaft of the pushing motor (902) is fixedly connected to the pushing shaft (15).

6. The automated automobile component nut projection welding workstation according to claim 1, characterized in that: A discharge adjustment cylinder (1001) is rotatably mounted at the bottom of the discharge slideway (10), and the other end of the discharge adjustment cylinder (1001) is rotatably connected to the bottom of the side of the convex welding platform (8). When the piston rod of the discharge adjustment cylinder (1001) contracts, the discharge slideway (10) turns upside down and the angle is adjusted.

7. The automated automobile component nut projection welding workstation according to claim 1, characterized in that: The material collection box (11) is provided with two cavities, the cavity close to the convex welding platform (8) is used to hold qualified products, and the cavity far from the convex welding platform (8) is used to hold unqualified products. The upper end of the cavity of the material collection box (11) for unqualified products is inclinedly provided with a docking slide (1101), and the unloading slide (10) is turned up to connect with the docking slide (1101).

8. The automated automobile component nut projection welding workstation according to claim 1, characterized in that: A welding head (1201) is fixedly mounted on the lower end of the piston rod of the welding cylinder (12); A spring box (1202) is fixedly mounted on the side wall of the welding cylinder (12), and a spiral spring (1203) is mounted inside the spring box (1202). One end of the spring (1203) is fixedly connected downwardly to a piston rod at the upper end of the welding head (1201). A smoking wheel (1207) is rotatably mounted on the middle part of the spring box (1202) via a rotating shaft. The smoking wheel (1207) is wrapped around the outer wall of the spring box (1202) via a smoking box (1204). The other end of the spring (1203) is fixedly connected to the rotating shaft of the smoking wheel (1207). A smoking pipe (1205) is connected to the middle part of the outer end of the smoking box (1204). The end of the smoking pipe (1205) extends to the lower end of the piston rod of the welding cylinder (12), one end of the smoking box (1204) is connected to a smoke exhaust pipe (1206) in a tangential direction upward, and the end of the smoke exhaust pipe (1206) is connected to an external smoking device. The piston rod of the welding cylinder (12) moves downward, and the welding head (1201) welds the nuts and parts below. The spring (1203) moves downward and is tightened as the piston rod of the welding cylinder (12). After welding is completed, the piston rod of the welding cylinder (12) moves upward and resets, and the spring (1203) unloads force. The smoking wheel (1207) rotates through the smoking pipe (1205) to suck away smoke and dust at the welding location.

9. The automated automobile component nut projection welding workstation according to claim 5, characterized in that: The left and right sides of the lower end of the inspection pusher frame (13) are respectively provided with stop plates (1301) inclined downward, and the left and right stop plates (1301) are distributed in an inverted V-shaped structure, wherein the stop plate (1301) in the projection welding frame (9) is made of an electromagnet.

10. The automated automobile component nut projection welding workstation according to claim 9, characterized in that: Two symmetrical pusher arms (1501) are vertically fixedly connected to the pusher shaft (15), and a pusher rod (1502) is fixedly connected between the lower ends of the pusher arms (1501). When the pusher arms (1501) are in a vertical state, the pusher rod (1502) is tangent to the upper end surface of the welding support seat (807) located below. The pusher arms (1501) are made of iron material. Under normal conditions, the stop plate (1301) with an electromagnet adsorbs and fixes the pusher arm (1501). After the inspection camera (14) has inspected the parts below, the stop plate (1301) of the electromagnet is powered off and demagnetized, and the pusher motor (902) starts to work. The pusher arm (1501) drives the pusher rod (1502) to rotate to push the parts on the welding support seat (807) into the unloading slideway (10), and the pusher motor (902) is reversed and reset.

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