An automated automobile component nut projection welding station

Abstract

The application provides an automatic automobile part nut projection welding workstation and relates to the technical field of automobile part welding.The automatic automobile part nut projection welding workstation comprises a workbench, a control box, a vibrating 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 stand, a discharging slide, a material collecting box, a welding cylinder, an inspection pushing frame, an inspection camera and a pushing shaft; the control box is integrated on the workbench; the part conveyor and the vibrating disc are arranged on one side of the workbench and are vertically distributed; in the application, the clockwork spring in the clockwork box is tightened when moving down under the welding head, and the energy is released after the welding is completed to drive the cigarette wheel to rotate; the cigarette wheel sucks away the welding smoke through the cigarette box and the cigarette pipe and discharges the smoke to the external cigarette suction device through the smoke exhaust pipe; the design not only effectively reduces the harm of welding smoke to the environment and the operating personnel, but also improves the safety and environmental protection of the welding process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts welding, and particularly relates to an automatic automobile part nut projection welding workstation. BACKGROUND

[0002] Firstly, in the traditional nut projection welding process, the positioning and grabbing of parts usually rely on manual operation or simple mechanical arms. This way not only inefficient, but also vulnerable to human factors, resulting in inaccurate positioning, insecure grabbing and other problems. At the same time, due to the usually harsh operating environment, there are high temperature, smoke and other dangerous factors, which pose a threat to the health and safety of the operators.

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

[0004] In the welding link, the traditional projection welding equipment usually lacks effective smoke treatment mechanism. The smoke generated during the welding process not only pollutes the environment, but also threatens the health of the operators. At the same time, the shielding of smoke also affects the monitoring and evaluation of welding quality.

[0005] After welding, the traditional projection welding process usually relies on manual inspection and classification of workpieces. This way not only inefficient, but also prone to missed detection and misjudgment. Especially for the handling of unqualified workpieces, there is often a lack of effective automation mechanism, resulting in waste of resources and increase in cost. SUMMARY

[0006] The present application relates to an automatic automobile part nut projection welding workstation, which can automatically complete the positioning and grabbing of parts, parallel processing of multiple workpieces, smoke treatment, automatic inspection and classification of workpieces and other functions, to improve production efficiency and product quality, reduce production cost and safety risk.

[0007] The application provides an automatic automobile part nut projection welding workstation, and specifically comprises 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 stand, a discharging slide, a material collecting box, a welding cylinder, an inspection pushing frame, an inspection camera and a pushing shaft; the workbench is provided with an integrated control box; one side of the workbench is provided with the part conveyor and the vibration disc, and the part conveyor and the vibration disc are vertically distributed; a photographing positioning column is vertically arranged on the workbench between the end of the part conveyor and the vibration disc close to each other, and the photographing positioning column is arranged on the photographing positioning column; symmetrical first four-axis robots and second four-axis robots are installed on the workbench on the side of the photographing positioning column away from the part conveyor and the vibration disc, the first four-axis robots are close to the part conveyor, and the second four-axis robots are close to the vibration disc; the projection welding table is fixedly installed on the workbench on the other side of the first four-axis robots and the second four-axis robots; the projection welding stand is fixedly installed on the projection welding table, a welding cylinder is vertically hung on the middle part of the projection welding stand close to one end of the first four-axis robots and the second four-axis robots, and a welding head is fixedly connected to the tail end of the piston rod of the welding cylinder; an inspection pushing frame is vertically hung on the middle part of the other end of the projection welding stand, and a downward inspection camera is fixedly installed on the lower middle part of the inspection pushing frame; a pushing shaft is transversely rotatably installed on the inspection pushing frame above the inspection camera, and the two ends of the pushing shaft pass through the corresponding side plates of the projection welding stand; a discharging slide is rotatably installed on the outer side of the projection welding stand at the position of the end where the inspection pushing frame is located, and the other end of the discharging slide is arranged above the material collecting box.

[0008] Optionally, a convenient groove is arranged on the left and right end side walls at the tail end of the conveying pipeline of the vibration disc, and the convenient groove is used for facilitating the second four-axis robot to grasp the nut on the vibration disc conveying pipeline.

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

[0010] Optionally, a transposition motor is vertically hung on the position corresponding to the lower part of the projection welding stand at the bottom of the projection welding table, two transposition end shafts are rotatably installed at the two ends of the conveying direction of the projection welding table, one transposition end shaft is fixedly connected with the rotating shaft of the transposition motor, and the two transposition end shafts are rotatably connected through a belt.

[0011] The convex welding stand is provided with two upper and lower through transposition stroke holes symmetrically arranged along the conveying direction on the left and right sides of the transposition end shaft, the upper and lower through transposition stroke holes are opposite to the belt between the transposition stroke holes and the transposition end shaft, the convex welding stand is provided with two parallel transposition guide rails fixedly installed on the outer sides of the two transposition stroke holes, the transposition guide rails are provided with transposition seats slidably installed on the transposition guide rails through sliding blocks, the transposition seats on the left and right transposition guide rails are staggered, the inner ends of the transposition seats are fixedly connected to the transposition connecting plates vertically downward, and the transposition connecting plates are fixedly connected to the belt downward through the transposition stroke holes.

[0012] Optionally, the convex welding stand is provided with guide rail frames symmetrically installed on the left and right sides near the lower end, the guide rail frames are outwardly convex structures, the hanging shafts of the pulling arms are slidably arranged in the corresponding guide rail frames, and the welding carrying seats are transversely moved under the guidance of the guide rail frames through the pulling arms in the moving process of the transposition seats.

[0013] The convex welding stand is provided with a pushing material motor fixedly installed on the outer frame body corresponding to the pushing material shaft, and the rotating shaft of the pushing material motor is fixedly connected to the pushing material shaft.

[0014] Optionally, the unloading adjusting cylinder is rotatably installed at the bottom of the unloading slide, the other end of the unloading adjusting cylinder is rotatably connected to the bottom of the side edge of the convex welding stand, the unloading slide is turned up and down, and the angle is adjusted.

[0015] Optionally, the material collecting box is provided with two cavities, the cavity close to the convex welding stand contains qualified products, and the cavity away from the convex welding stand contains unqualified products.

[0016] Optionally, the welding cylinder is provided with a welding head fixedly installed at the lower end of the piston rod.

[0017] The side wall of the welding cylinder is fixedly provided with a spring box, the spring box is provided with a spiral spring, one end of the spring is fixedly connected with the piston rod at the upper end of the welding head, the middle part of the spring box is further provided with a smoking wheel which is rotatably connected through a rotating shaft, the smoking wheel is wrapped on the outer wall of the spring box through a smoking box, the other end of the spring is fixedly connected with the rotating shaft of the smoking wheel, the middle part of the outer end of the smoking box is connected with a smoking pipe, the tail end of the smoking pipe extends to the position of the lower end of the piston rod of the welding cylinder, the end of the smoking box is connected with a smoke exhaust pipe in the tangential direction, the tail end of the smoke exhaust pipe is connected with an external smoking device, the piston rod of the welding cylinder moves downward, the welding head welds the nut and the parts below, the spring is pulled tight along with the downward movement of the piston rod of the welding cylinder, the welding is completed, the piston rod of the welding cylinder moves upward to reset, the spring is unloaded, and the smoking wheel rotates to suck away the smoke and dust at the welding position through the smoking pipe.

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

[0019] Optionally, the pusher shaft is vertically and fixedly connected with two symmetrical pusher arms, and the lower ends of the pusher arms are fixedly connected with a pusher rod, when the pusher arms are in a vertical state, the pusher rod is tangent to the upper end surface of the welding bearing seat directly below, the pusher arms are made of ferrous material, in a normal state, the stop plate with the electromagnet adsorbs and fixes the pusher arms, after the inspection camera inspects the parts below, the stop plate with the electromagnet is powered off and demagnetized, the pusher motor works, the pusher arms drive the pusher rod to rotate to push the parts on the welding bearing seat into the unloading slide, and the pusher motor is reversed to reset.

[0020] The present application provides an automatic automobile part nut projection welding workstation, which has the following advantages:

[0021] In the part positioning and grasping link, the D camera on the positioning column plays a key role. 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 robot. According to 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 projection 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 table is also innovative. The transposition motor at the bottom of the projection welding table drives the transposition connecting plate and the welding bearing seat to move on the transposition guide rail through the transposition end shaft and the belt, so that the workstation can process multiple workpieces at the same time, greatly improving the work efficiency. More importantly, this design avoids interference between workpieces, ensuring the smooth progress of the welding process.

[0023] The welding link is the core part of the workstation. The piston rod of the welding cylinder moves downward, driving the welding head to weld the nut and parts below. It is worth mentioning that the spring box and smoking 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 the welding is completed, driving the smoking wheel to rotate. The smoking wheel sucks away the welding smoke through the smoking box and smoking pipe, and discharges it to the external smoking device through the 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, the inspection camera inspects the welded workpieces. The electromagnet stop plate plays a key role at this time, which adsorbs the pushing arm to prevent it from rotating, ensuring the stability of the workpiece during inspection. When the inspection camera confirms that the workpiece is qualified, the electromagnet stop plate is de-energized and demagnetized, and the pushing motor starts to work, pushing the pushing arm to rotate the pushing rod, pushing the workpiece on the welding carrier into the unloading chute. If the workpiece is unqualified, the unloading chute will be turned up under the drive of the unloading adjustment cylinder, and will be opposite to the butt joint chute, and the unqualified workpiece will be sent into the corresponding unqualified product cavity of the material collecting box. This process realizes the automatic inspection and classification of workpieces, greatly improving the intelligent degree and production efficiency of the workstation.

[0025] Finally, when the workpieces are pushed into the unloading chute, they will slide into the corresponding qualified product cavity of the material collecting box along the chute. The working process of the entire automatic automobile part nut projection welding workstation is completed. This process not only realizes high automation and intelligence, but also ensures the improvement of production efficiency and product quality through precise control and scheduling. This innovative workstation design not only provides a new solution for the automatic production of automobile part nut projection welding, but also provides beneficial reference and inspiration for the automatic production of other similar fields. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0027] The drawings described in the following description only relate to some embodiments of the present application, but are not a limitation of the present application.

[0028] In the drawings:

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

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

[0031] Figure 3A schematic diagram of the upper axial view of the projection welding station portion of the present invention is shown;

[0032] Figure 4 A schematic diagram of the lower axial view of the projection welding station portion of the present invention is shown;

[0033] Figure 5 This diagram shows a partial axial view of the projection welding stand, welding cylinder, and inspection pusher of the present invention.

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

[0035] Figure 7 The present invention is shown Figure 6 Schematic diagram of the A-section structure;

[0036] Figure 8 A schematic diagram of the exposed state of the projection soldering station of the present invention is shown;

[0037] Figure 9 This diagram shows a split-off axial view of the projection welding station of the present invention.

[0038] Figure 10 A schematic diagram of the axial view of the projection soldering station portion of the present invention in a further split state is shown.

[0039] List of reference numerals

[0040] 1. Workbench;

[0041] 2. Control box;

[0042] 3. Vibratory feeder; 301. Easy-access slot;

[0043] 4. Parts conveyor;

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

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

[0046] 7. Second, a four-axis robot;

[0047] 8. Projection welding station; 801. Transposition motor; 802. Transposition guide rail; 803. Transposition stroke hole; 804. Transposition end shaft; 805. Transposition connecting plate; 806. Transverse sliding seat; 807. Welding bearing seat; 808. Pull arm;

[0048] 9. Projection welded upright; 901. Guide rail frame; 902. Pusher motor;

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

[0050] 11. Collection bin; 1101. Connecting slide;

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

[0052] 13. Check pusher; 1301. Stop plate;

[0053] 14. Check camera;

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

[0055] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0056] Embodiment one: please refer to Figures 1 to 10 :

[0057] The application provides an automatic automobile part nut projection welding workstation, which comprises a workbench 1, a control box 2, a vibration disc 3, a part 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 discharging slide 10, a material collecting box 11, a welding cylinder 12, an inspection pushing frame 13, an inspection camera 14 and a pushing shaft 15. The workbench 1 is provided with the integrated control box 2. The workbench 1 is provided with the part conveyor 4 and the vibration disc 3 on one side, and the part conveyor 4 and the vibration disc 3 are vertically arranged. The photographing positioning column 5 is vertically arranged on the workbench 1 between the part conveyor 4 and the vibration disc 3 close to each other, and the photographing positioning column 5 is arranged on the photographing positioning column 5. The first four-axis robot 6 and the second four-axis robot 7 are symmetrically arranged on the workbench 1 away from the part conveyor 4 and the vibration disc 3 on the side away from the photographing positioning column 5, the first four-axis robot 6 is close to the part conveyor 4, and the second four-axis robot 7 is close to the vibration disc 3. The projection welding table 8 is fixedly arranged on the workbench 1 on the other side of the first four-axis robot 6 and the second four-axis robot 7. The projection welding stand 9 is fixedly arranged on the projection welding table 8, the welding cylinder 12 is vertically hung on the middle part of the projection welding stand 9 close to one end of the first four-axis robot 6 and the second four-axis robot 7, and the piston rod of the welding cylinder 12 is fixedly connected with a welding head 1201 at the tail end. The inspection pushing frame 13 is vertically hung on the middle part of the other end of the projection welding stand 9, and the downward inspection camera 14 is fixedly arranged on the lower middle part of the inspection pushing frame 13. The pushing shaft 15 is transversely rotatably arranged on the inspection pushing frame 13 above the inspection camera 14, and the two ends of the pushing shaft 15 pass through the corresponding side plates of the projection welding stand 9. The discharging slide 10 is rotatably arranged on the outer side of the projection welding stand 9 at the position of the end where the inspection pushing frame 13 is arranged, and the other end of the discharging slide 10 is arranged above the material collecting box 11.

[0058] Wherein, the left and right end side walls of the delivery pipeline of the vibration disc 3 are provided with convenient grooves 301, and the convenient grooves 301 are used for facilitating the second four-axis robot 7 to grab the nuts on the delivery pipeline of the vibration disc 3.

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

[0060] Wherein, the projection welding table 8 is vertically hung with a transposition motor 801 at the position corresponding to the lower part of the projection welding stand 9, and the two ends of the projection welding table 8 in the conveying direction are rotatably arranged with transposition end shafts 804, one transposition end shaft 804 is fixedly connected with the rotating shaft of the transposition motor 801, and the two transposition end shafts 804 are rotatably connected through a belt.

[0061] On the left and right sides of the projection welding platform 8 of the transposition end shaft 804, there are symmetrically arranged transposition stroke holes 803 that pass through vertically along the conveying direction. The belt between the transposition stroke holes 803 and the transposition end shaft 804 is vertically aligned. Parallel transposition guide rails 802 are fixedly installed on the projection welding platform 8 outside the two transposition stroke holes 803. A transverse sliding seat 806 is slidably installed on the transposition guide rail 802 via a slider. The transverse sliding seats 806 on the left and right transposition guide rails 802 are staggered. The inner end of the transverse sliding seat 806 is fixedly connected vertically downward. A shifting plate 805 is provided, which passes downward through the shifting stroke hole 803 and is fixedly connected to the belt. A welding bearing seat 807 is slidably installed on the transverse shift seat 806 via a slider. The upper end surface of the welding bearing seat 807 is a groove structure with an opening on the side of the unloading slide 10, which facilitates the unloading of the welded workpiece onto the unloading slide 10. A traction 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. The end of the traction arm 808 is provided with a hanging shaft.

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

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

[0064] The unloading slide 10 is rotatably mounted with an unloading adjustment cylinder 1001 at its bottom. The other end of the unloading adjustment cylinder 1001 is rotatably connected to the bottom side of the projection welding station 8. When the piston rod of the unloading adjustment cylinder 1001 retracts, the unloading slide 10 flips up and down to adjust the angle.

[0065] The collection box 11 has two cavities. The cavity closer to the projection welding station 8 holds qualified products, and the cavity farther away from the projection welding station 8 holds unqualified products. The upper end of the cavity of the collection box 11 for unqualified products is provided with a docking slide 1101 at an angle. The unloading slide 10 flips up and connects with the docking slide 1101.

[0066] The lower end of the piston rod of the welding cylinder 12 is fixedly equipped with a welding head 1201;

[0067] The side wall of the welding cylinder 12 is fixedly provided with a spring box 1202, the spring box 1202 is internally provided with a spiral spring 1203, one end of the spring 1203 is fixedly connected with a piston rod at the upper end of the welding head 1201, the middle part of the spring box 1202 is further rotatably provided with a smoking wheel 1207, 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 with the rotating shaft of the smoking wheel 1207, the outer end of the smoking box 1204 is connected with a smoking pipe 1205, the tail end of the smoking pipe 1205 extends to the position of the lower end of the piston rod of the welding cylinder 12, one end of the smoking box 1204 is connected with a smoke exhaust pipe 1206 in the tangential direction, the tail end of the smoke exhaust pipe 1206 is connected with an external smoking device, the piston rod of the welding cylinder 12 moves downward, the welding head 1201 welds the nut and the parts below, the spring 1203 moves downward with the piston rod of the welding cylinder 12 and is tightened, the welding is completed, the piston rod of the welding cylinder 12 moves upward and resets, the spring 1203 is unloaded, and the smoking wheel 1207 rotates to suck away the smoke and dust at the welding position through the smoking pipe 1205.

[0068] 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 in inverted V-shaped structure, wherein the stop plate 1301 in the projection welding stand 9 is made of an electromagnet.

[0069] In example two, on the basis of example one, the pusher shaft 15 is vertically and fixedly connected with two symmetrical pusher arms 1501, the lower ends of the pusher arms 1501 are fixedly connected with a pusher rod 1502, when the pusher arms 1501 are in the vertical state, the pusher rod 1502 is tangent to the upper end surface of the welding support 807 directly below, the pusher arms 1501 are made of ferrous material, in the normal state, the stop plate 1301 with the electromagnet adsorbs and fixes the pusher arms 1501, after the inspection camera 14 inspects the parts below, the stop plate 1301 with the electromagnet is powered off and demagnetized, the pusher motor 902 works, the pusher arms 1501 drive the pusher rod 1502 to rotate and push the parts on the welding support 807 into the discharging chute 10, and the pusher motor 902 reverses to reset.

[0070] The working principle of the embodiment is as follows:

[0071] In the initial stage of the operation of the workstation, the vibration disc 3 starts to work and orderly delivers the nuts to the end of its delivery pipeline. The end of this delivery pipeline is designed with a convenient groove 301, which makes the second four-axis robot 7 easily and accurately grasp the nuts. At the same time, the part conveyor 4 also continuously operates to deliver the automobile parts to be welded to the designated position in the workstation.

[0072] After the first four-axis robot 6 clamps the parts to the designated position, the 2D camera 501 on the positioning column 5 will take a photo of the welding position of the parts. This 2D camera 501 is directed towards the first four-axis robot 6, ensuring that it can capture accurate position information of the parts, providing precise guidance for subsequent robot operations.

[0073] Next, the first four-axis robot 6 and the second four-axis robot 7 respectively grab the parts and nuts according to the positioning information provided by the 2D camera 501, and place them on the welding support 807 on the projection welding platform 8. At this time, the transposition motor 801 at the bottom of the projection welding platform 8 starts to work, driving the transposition connecting plate 805 and the welding support 807 to move on the transposition guide rail 802 through the transposition end shaft 804 and the belt. This design allows the workstation to handle multiple workpieces simultaneously, greatly improving work efficiency and preventing interference.

[0074] During the welding process, the piston rod of the welding cylinder 12 moves down, driving the welding head 1201 to weld the nuts and parts below. It is worth noting that a clockwork box 1202 and a smoke suction device are also fixedly installed on the side wall of the welding cylinder 12. When the welding head 1201 moves down, the clockwork 1203 will be tightened; when the welding is completed and the piston rod of the welding cylinder 12 moves up to reset, the clockwork 1203 will release energy to drive the smoke suction wheel 1207 to rotate. The smoke suction wheel 1207 sucks away the smoke and dust at the welding site through the smoke suction box 1204 and the smoke suction pipe 1205, and discharges it to the external smoke suction device through the smoke exhaust pipe 1206, thereby achieving smoke and dust treatment during the welding process.

[0075] After the welding is completed, the inspection camera 14 will inspect the welded workpieces. At this time, the electromagnet stop plate 1301 in the projection welding stand 9 will attract the pushing arm 1501, preventing it from rotating. When the inspection camera 14 confirms that the workpieces are qualified, the electromagnet stop plate 1301 will be de-energized and demagnetized, and the pushing motor 902 will start to work. The pushing arm 1501 on the pushing shaft 15 will drive the pushing rod 1502 to rotate, pushing the workpieces on the welding support 807 into the unloading chute 10. If the workpieces are unqualified, the unloading chute 10 will be flipped up under the drive of the unloading adjustment cylinder 1001, and will be opposite to the docking chute 1101, sending the unqualified workpieces into the corresponding unqualified product cavity of the collection box 11.

[0076] Finally, when the workpieces are pushed into the unloading chute 10, they will slide into the corresponding qualified product cavity of the collection box 11 along the chute. In this way, the work flow of the entire automatic automobile part nut projection welding workstation is completed. The entire process realizes high automation and intelligence, greatly improving production efficiency and product quality.

[0077] In this article, the following points need to be noted:

[0078] 1. The drawings in the embodiments of the present application only relate to the structures involved in the embodiments of the present application, and other structures can be referred to the general design.

[0079] 2. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0080] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An automated workstation for projecting welding nuts on automotive parts, comprising: The workbench (1), control box (2), vibratory feeder (3), parts conveyor (4), photo positioning column (5), 2D camera (501), first four-axis robot (6), second four-axis robot (7), projection welding station (8), projection welding stand (9), unloading slide (10), collection box (11), welding cylinder (12), inspection pusher (13), inspection camera (14), and pusher shaft (15) are characterized in that the workbench (1) is equipped with an integrated control box (2); the workbench (1) is characterized in that a parts conveyor is provided on one side of the workbench (1). The machine (4) and vibratory feeder (3) are arranged vertically; a photo-taking positioning column (5) is vertically installed on the worktable (1) between the ends of the parts conveyor (4) and the vibratory feeder (3) that are close to each other; a symmetrical first four-axis robot (6) and second four-axis robot (7) are installed on the worktable (1) on the side of the photo-taking positioning column (5) away from the parts conveyor (4) and the vibratory feeder (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 vibratory feeder (3); a projection welding station (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 station (8), and a welding cylinder (12) is vertically suspended in the middle of the projection welding stand (9) near the first four-axis robot (6) and the second four-axis robot (7), and a welding head (1201) is fixedly connected downward to the piston rod end of the welding cylinder (12); the other end of the projection welding stand (9) A vertically suspended inspection pusher (13) is installed in the middle, and a downward inspection camera (14) is fixedly installed at the lower middle of the inspection pusher (13); a pusher shaft (15) is horizontally rotatably installed on the inspection pusher (13) above the inspection camera (14), and the two ends of the pusher shaft (15) pass through the corresponding side plates of the projection welding stand (9); a discharge slide (10) is rotatably installed at the outer side of the projection welding stand (9) at one end of the inspection pusher (13), and the other end of the discharge slide (10) rests on the top of the collection box (11).

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

3. The automated automotive component nut projection welding workstation according to claim 1, characterized in that, The 2D camera (501) on the photo positioning post (5) is facing the first four-axis robot (6).

4. The automated automotive component nut projection welding workstation according to claim 1, characterized in that, A shifting motor (801) is vertically mounted at the bottom of the projection welding station (8) corresponding to the position below the projection welding stand (9). Shifting end shafts (804) are rotatably installed at both ends of the projection welding station (8) in the conveying direction. One shifting end shaft (804) is fixedly connected to the rotating shaft of the shifting motor (801), and the two shifting end shafts (804) are rotatably connected by a belt. On the left and right sides of the transposition end shaft (804), symmetrical transposition stroke holes (803) are provided through the vertical direction along the conveying direction. The belt between the transposition stroke holes (803) and the transposition end shaft (804) is vertically aligned. Parallel transposition guide rails (802) are fixedly installed on the outer sides of the two transposition stroke holes (803). A transverse sliding seat (806) is slidably installed on the transposition guide rail (802) via a slider. The transverse sliding seats (806) on the left and right transposition guide rails (802) are staggered. The inner end of the transverse sliding seat (806) is fixed vertically downward. A shifting plate (805) is connected, and the shifting plate (805) passes downward through the shifting stroke hole (803) and is fixedly connected to the belt; a welding bearing seat (807) is installed on the transverse shift seat (806) by sliding the slider laterally. The upper end surface of the welding bearing seat (807) is a groove structure that opens to the side where the unloading slide (10) is located, so that the welded workpiece can be unloaded onto the unloading slide (10). A traction arm (808) is vertically fixed in the outer end side wall of the welding bearing seat (807) and the sliding direction of the welding bearing seat (807) is consistent. The end of the traction arm (808) is provided with a hanging shaft.

5. An automated automotive component nut projection welding workstation according to claim 4, characterized in that, The projection welding stand (9) is symmetrically equipped with guide rails (901) near the lower end. The guide rails (901) have a convex structure in the middle. The hanging shaft of the traction arm (808) is slidably placed in the corresponding guide rail (901). The transverse seat (806) drives the welding bearing seat (807) to move. During the movement, the welding bearing seat (807) moves laterally under the guidance of the guide rails (901) through the traction arm (808). When the welding bearing seats (807) on the left and right sides are at the two ends of the shift guide rail (802), they are both at the innermost middle position. When they are at the middle position of the shift guide rail (802), the two welding bearing seats (807) are parallel and farthest apart, and do not interfere with each other. A pusher motor (902) is fixedly installed on the outer frame of the projection welding stand (9) corresponding to the pusher shaft (15), and the rotating shaft of the pusher motor (902) is fixedly connected to the pusher shaft (15).

6. The automated automotive component nut projection welding workstation according to claim 1, characterized in that, The bottom of the unloading slide (10) is rotatably equipped with an unloading adjustment cylinder (1001). The other end of the unloading adjustment cylinder (1001) is rotatably connected to the bottom side of the projection welding station (8). When the piston rod of the unloading adjustment cylinder (1001) retracts, the unloading slide (10) flips up and down to adjust the angle.

7. An automated automotive component nut projection welding workstation according to claim 1, characterized in that, The collection box (11) has two cavities. The cavity closer to the projection welding station (8) holds qualified products, and the cavity farther away from the projection welding station (8) holds unqualified products. The upper end of the cavity of the collection box (11) for unqualified products is provided with a docking slide (1101) at an angle. After the unloading slide (10) is flipped up, it is connected to the docking slide (1101).

8. An automated automotive component nut projection welding workstation according to claim 1, characterized in that, The lower end of the piston rod of the welding cylinder (12) is fixedly equipped with a welding head (1201); A spring box (1202) is fixedly installed on the side wall of the welding cylinder (12). A spiral spring (1203) is coiled inside the spring box (1202). One end of the spring (1203) is fixedly connected downward to the piston rod at the upper end of the welding head (1201). A smoking wheel (1207) is also rotatably installed in the middle of the spring box (1202) via a rotating shaft. The smoking wheel (1207) is wrapped around the outer wall of the spring box (1202) by 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 tube (1205) is connected to the middle 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 the exhaust pipe (1206) with the tangential direction upward. The end of the exhaust pipe (1206) is connected to the external smoking device. The piston rod of the welding cylinder (12) moves down, and the welding head (1201) welds the nut and parts below. The spring (1203) moves down and tightens along with the piston rod of the welding cylinder (12). The welding is completed. The piston rod of the welding cylinder (12) moves up and resets. The spring (1203) is unloaded. The smoking wheel (1207) rotates and sucks away the smoke and dust at the welding point through the smoking pipe (1205).

9. An automated automotive component nut projection welding workstation according to claim 5, characterized in that, The inspection pusher (13) has two inclined stop plates (1301) on the left and right sides at the lower end. The two stop plates (1301) are distributed in an inverted V shape. The stop plate (1301) in the projection welding stand (9) is made of electromagnet.

10. An automated automotive 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). A pusher rod (1502) is fixedly connected between the lower ends of the pusher arms (1501). When the pusher arm (1501) is in a vertical position, the pusher rod (1502) is tangent to the upper end face of the welding support seat (807) below. The pusher arm (1501) is made of iron. Under normal conditions, the stop plate (1301) with an electromagnet will attract and fix the pusher arm (1501). After the inspection camera (14) has finished inspecting the parts below, the stop plate (1301) of the electromagnet will be de-energized and demagnetized. The pusher motor (902) will work. The pusher arm (1501) will drive the pusher rod (1502) to rotate and push the parts on the welding support seat (807) into the unloading slide (10). The pusher motor (902) will reverse and reset.

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