Intelligent welding machine for arc-shaped automobile plates

Abstract

The invention belongs to the technical field of automobile plate welding, and discloses an arc-shaped automobile plate intelligent welding machine which comprises a workbench, a clamping and rotating mechanism, a welding module, an arc-shaped clamping and rotating mechanism, an arc-shaped clamping and rotating mechanism, an arc-shaped clamping and rotating mechanism and an arc-shaped clamping and rotating mechanism, and the arc-shaped clamping and rotating mechanism is arranged on the arc-shaped clamping and rotating mechanism. Through cooperation of structures such as an arc-shaped supporting plate, an inverted trapezoidal support, a sleeve and an air suction head, when the two arc-shaped plates can be conveniently subjected to curvature adaptive clamping and adsorption positioning according to different welding concave-convex surfaces, an air cylinder extracts air of a hose, so that suction force is generated in the middle of a suction cup, the surfaces of the two arc-shaped plates are adsorbed and clamped, and the welding quality of the two arc-shaped plates is improved. And under the action of suction force, due to the elastic compression design of the air suction head, the air suction head extrudes the spring to enable the outer walls of the two arc-shaped plates to be tightly attached to the inverted trapezoidal support, it is guaranteed that the arc-shaped plates with different curvatures can be effectively clamped, supporting gaps between the inverted trapezoidal support and the arc-shaped plates are made up, and stable clamping is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of automotive sheet metal welding technology, specifically an intelligent welding machine for arc-shaped automotive sheet metal. Background Technology

[0002] To improve the strength and safety of the vehicle body structure and achieve lightweighting, cost reduction and efficiency improvement, intelligent laser welding is currently commonly used for welding automotive sheet metal. This is especially true for curved sheet metal, which is more difficult to weld and requires a high degree of flexibility in the welding system. Laser welding results in a high weld depth to width ratio, minimal workpiece deformation, almost no connection gaps, high welding quality, small weld area volume, small heat-affected zone, and minimal impact on stamping performance.

[0003] Existing technical document publication number CN117733396B discloses a welding equipment and method for automotive frame parts, specifically relating to the welding field. This welding equipment includes a worktable with a rotating mechanism for clamping and flipping a longitudinal beam; a positioning plate with adsorption holes on its upper and lower surfaces, and an air hole on one side of the positioning plate connected to the adsorption holes and linked to the output of a vacuum pump; the upper and lower surfaces of the positioning plate adsorb curved plates through the adsorption holes; and a clamping mechanism for holding the positioning plate. This invention uses a positioning plate to adsorb two curved plates onto both sides of the positioning plate, which are then inserted into the welding support area. The positioning plate fills the gap between the two curved plates, ensuring that when one curved plate is welded and flipped, the other curved plate will not fall out, thus enabling the simultaneous loading of two curved plates and improving welding efficiency. Although the aforementioned device can improve welding efficiency by loading two curved plates at a time, most existing devices still rely on fixing the workpiece in place and having the intelligent welding robot arm move it in complex arcs while welding during the movement. This makes the programming algorithm of the welding robot arm quite complex, requiring different motion trajectories to be set for different workpieces, which is not conducive to the rapid processing of new curved workpieces. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent welding machine for arc-shaped automotive sheet metal that effectively improves processing efficiency and automatically removes impurities by blowing air, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intelligent welding machine for arc-shaped automotive sheet metal, comprising a worktable, a mounting plate fixedly connected to the top edge of the worktable, a welding module mounted on the top of the mounting plate, and further comprising: A clamping and rotating mechanism is located on a worktable; An automatic air-scanning mechanism, which is connected to a clamping and rotating mechanism; The clamping and rotating mechanism includes a support frame fixed to the top of the workbench on the side away from the mounting plate. An arc plate is slidably connected to the top of the support frame. The side wall of the arc plate is rotatably connected to the side wall of the mounting plate through an arc-shaped support plate. Side grooves are provided on both sides of the arc-shaped support plate, and a pair of debris discharge ports are provided in the middle of the arc-shaped support plate. When the arc-shaped automotive panel is clamped on the arc-shaped support plate, the mechanism can drive the panel to rotate precisely along the arc trajectory, so that different parts of the weld enter the optimal welding position in sequence for the welding module to perform welding. At the same time, the automatic air sweeping mechanism and the clamping and rotating mechanism are mechanically linked. The movement of the clamping and rotating mechanism is used as a trigger or power source to blow through the inner surface area of ​​the arc-shaped support plate, effectively removing welding slag and spatter.

[0006] Preferably, the clamping and rotating mechanism further includes a T-shaped rod slidably connected to the edge of the worktable, the T-shaped rod being elastically connected to the worktable, and a drive motor being fixedly connected to the top of the T-shaped rod.

[0007] Preferably, the output end of the drive motor has a vertical slot rod that movably passes through it, and a gear is fixedly connected to the end of the gear. The outer wall of the gear meshes with an arc rack, and the side wall of the arc rack is fixedly connected to an arc plate. The bottom of the vertical slot rod is fixedly connected to the worktable, and the teeth of the arc rack are arranged in a spiral pattern. When the gear meshes with the arc rack, causing the arc plate and the arc support plate to move in opposite directions, the gear can move upward along the vertical slot rod at the bend to reach the other side of the spiral teeth and continue meshing, ensuring the continuity of motion transmission.

[0008] Preferably, an electric actuator and a cylinder are fixedly connected to the middle part of the arc-shaped support plate, and an inverted trapezoidal bracket is fixedly connected to the output end of the electric actuator. Due to the inverted trapezoidal design of the bracket, the two arc-shaped plates can be arranged with the concave side facing up, so that the two sides of the convex side abut against the inverted trapezoidal bracket, or with the convex side facing up, so that the two sides of the concave side are reversed and fastened to the inverted trapezoidal bracket.

[0009] Preferably, sleeves are symmetrically fixed to both sides of the inverted trapezoidal bracket, and an air suction head is elastically slidably connected to the inner cavity of the sleeve. A suction cup is fixed to the end of the air suction head, and the cylinder is fixedly connected to the bottom of the sleeve through a pair of hoses.

[0010] Preferably, both sides of the inverted trapezoidal bracket are fixedly connected to sliding rods, the outer walls of the sliding rods are slidably connected to the side groove, a pressure sensor is fixedly connected to the welding module, and a contact rod is fixedly connected to the end of the pressure sensor; during welding, in conjunction with the pressure detection of the pressure sensor and the contact rod, under the real-time control of the external intelligent control system, the electric push rod pushes the inverted trapezoidal bracket outward or inward by a small distance, so that the distance between the welding head and the welding position is always dynamically balanced, and precise welding is achieved.

[0011] Preferably, the automatic air sweeping mechanism includes a pair of air outlet pipes fixed to both sides of the arc-shaped support plate, and a plurality of air jets are fixedly connected to the bottom of the air outlet pipes at equal intervals.

[0012] Preferably, a guide rod is fixedly connected to the inner side of the top of the mounting plate, and push-pull rods are symmetrically slidably connected to the outer walls of both sides of the guide rod. Each pair of push-pull rods is slidably sleeved with an arc-shaped sleeve through a rubber plug.

[0013] Preferably, the upper ends of both arc-shaped sleeves are fixed to the air outlet pipe, and the other ends of both arc-shaped sleeves are fixedly connected to the air vent pipe. The end of the air vent pipe is installed on the air outlet pipe through a first one-way valve. When blowing air, the air outlet pipe moves upward around the far circumference, causing the arc-shaped sleeve and the air vent pipe to move synchronously. At this time, the push-pull rod remains stationary. Therefore, the inner cavity of the arc-shaped sleeve is squeezed by the rubber plug, causing the arc-shaped sleeve to continuously fit into the outer wall of the push-pull rod. At this time, the gas inside the arc-shaped sleeve is squeezed into the air outlet pipe along the air vent pipe and finally discharged through the jet nozzle, blowing the welding debris off from the waste discharge port.

[0014] Preferably, a second one-way valve is installed at the end of the arc-shaped sleeve away from the air outlet pipe, and the outer wall of the arc-shaped sleeve slides against the inner side of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the coordinated structure of an arc-shaped support plate, an inverted trapezoidal bracket, a sleeve, and a suction head, facilitates the adaptive clamping of two arc-shaped plates regardless of their different welding surfaces. During adsorption and positioning, a cylinder draws gas from a flexible hose, generating suction in the center of the suction cup to adsorb and clamp the surfaces of the two arc-shaped plates. Under the action of suction, the elastic compression design of the suction head compresses the spring, pressing the outer walls of the two arc-shaped plates tightly against the inverted trapezoidal bracket. This ensures effective clamping of arc-shaped plates with different curvatures, compensates for the support gap between the inverted trapezoidal bracket and the arc-shaped plates, and ensures stable clamping. During welding, the workpiece rotates around a fixed axis, and the contact rod monitors the pressure in real time, thereby slightly changing the workpiece displacement and automatically controlling the welding point distance for precise welding. This effectively improves processing efficiency for arc-shaped workpieces with different curvatures, while also reducing the intelligence level of the welding robot and saving equipment costs.

[0016] This invention, through the coordinated arrangement of an exhaust pipe, push-pull rod, arc-shaped sleeve, and guide rod, facilitates the automatic cleaning of welding spatter during the welding process. During air blowing, the arc-shaped support plate rotates and moves, driving the exhaust pipe to push the arc-shaped sleeve and the vent pipe, causing the arc-shaped sleeve to continuously fit onto the outer wall of the push-pull rod. At this time, the gas inside the arc-shaped sleeve is squeezed into the exhaust pipe along the vent pipe and finally discharged through the jet nozzle, spraying air onto the inner surface of the arc-shaped support plate, blowing the welding debris off from the debris discharge port. During resetting, under the combined action of the first and second one-way valves, the push-pull rod pulls out of the arc-shaped sleeve, and gas continuously enters into the arc-shaped sleeve through the second one-way valve. Furthermore, with the symmetrical arrangement of the devices on both sides, when the arc-shaped support plate rotates and moves, there is always an exhaust pipe on one side blowing air to remove debris, which not only keeps the welded area clean but also has a certain cooling effect on the workpiece. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a rear-view stereoscopic structural diagram of the present invention; Figure 3 This is a side view of the three-dimensional structure of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle; Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle; Figure 7 This is a schematic diagram showing the structural fit between the inverted trapezoidal bracket and the sliding rod of the present invention; Figure 8 This is a schematic diagram showing the structural fit between the sleeve and the inverted trapezoidal bracket of the present invention; Figure 9 This is a schematic diagram showing the structural fit between the air outlet pipe and the arc-shaped sleeve of the present invention; Figure 10 This is a schematic diagram showing the structural fit between the guide rod and the mounting plate of the present invention; Figure 11 This is a schematic diagram showing the structural relationship between the air outlet pipe and the first one-way valve of the present invention.

[0018] In the picture: 100. Workbench; 200. Mounting plate; 300. Welding module; 400. Clamping and rotating mechanism; 410. Arc plate; 420. Arc-shaped support plate; 430. Side groove; 440. Slide rod; 450. Inverted trapezoidal bracket; 460. Suction cup; 470. Electric actuator; 480. Contact rod; 490. Pressure sensor; 4100. Arc rack; 4110. Drive motor; 4120 4130, Gear; 4140, Support frame; 4150, T-shaped rod; 4160, Vertical groove rod; 4170, Cylinder; 4180, Sleeve; 500, Suction head; 510, Automatic air sweeping mechanism; 520, Air outlet pipe; 530, Air jet head; 540, First one-way valve; 550, Arc sleeve; 560, Second one-way valve; 570, Push-pull rod; 580, Guide rod; 590, Vent pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 11 As shown, the present invention provides an intelligent welding machine for arc-shaped automotive sheet metal, including a worktable 100, a mounting plate 200 fixedly connected to the top edge of the worktable 100, a welding module 300 mounted on the top of the mounting plate 200, and further including: The clamping and rotating mechanism 400 is located on the worktable 100; Automatic air sweeping mechanism 500, which is connected to clamping and rotating mechanism 400; The clamping and rotating mechanism 400 includes a support frame 4130 fixed to the top of the workbench 100 on the side away from the mounting plate 200. An arc plate 410 is slidably connected to the top of the support frame 4130. The side wall of the arc plate 410 is rotatably connected to the side wall of the mounting plate 200 through an arc-shaped support plate 420. Side grooves 430 are provided on both sides of the arc-shaped support plate 420, and a pair of waste discharge ports are provided in the middle of the arc-shaped support plate 420.

[0021] The above-mentioned solution employs a welding module 300, primarily composed of a stepper motor, guide rail, laser welding head, metal strip, and electrode feeder, used for intelligent welding of curved automotive panels. When the curved automotive panel is clamped onto the curved support plate 420, this mechanism drives the panel to rotate precisely along the curved trajectory, sequentially positioning different parts of the weld seam in the optimal welding position for welding module 300 to perform welding. Simultaneously, the automatic air-sweeping mechanism 500 and the clamping and rotating mechanism 400 are mechanically linked. Using the movement of the clamping and rotating mechanism 400 as a trigger or power source, air is blown through the inner surface area of ​​the curved support plate 420, efficiently removing weld slag and spatter. Through the close coordination of the mechanical structures, the entire system achieves precise, efficient, and clean automated welding of curved panels.

[0022] like Figures 2 to 5 As shown, the clamping and rotating mechanism 400 also includes a T-shaped rod 4140 slidably connected to the edge of the worktable 100. The T-shaped rod 4140 is elastically connected to the worktable 100, and a drive motor 4110 is fixedly connected to the top of the T-shaped rod 4140. The output end of the drive motor 4110 is movably connected through a vertical slot rod 4150, and a gear 4120 is fixedly connected to the end. The outer wall of the gear 4120 is meshed with an arc rack 4100. The side wall of the arc rack 4100 is fixedly connected to the arc plate 410. The bottom of the vertical slot rod 4150 is fixedly connected to the worktable 100. The teeth of the arc rack 4100 are arranged in a spiral pattern. An electric push rod 470 and a cylinder 4160 are fixedly connected to the middle part of the arc-shaped support plate 420, and an inverted trapezoidal bracket 450 is fixedly connected to the output end of the electric push rod 470.

[0023] The above scheme employs the following: Since the teeth of the arc rack 4100 are arranged in a spiral pattern, when the gear 4120 meshes with the arc rack 4100, causing the arc plate 410 and the arc support plate 420 to move in opposite directions, the gear 4120 can move upwards along the vertical groove rod 4150 at the bend, reaching the other side of the spiral teeth to continue meshing, ensuring the continuity of motion transmission. Due to the inverted trapezoidal design of the inverted trapezoidal bracket 450, the two arc-shaped plates can be welded flexibly, with the concave side facing upwards and the convex side abutting against the inverted trapezoidal bracket 450, or with the convex side facing upwards and the concave side snapping against the inverted trapezoidal bracket 450. During adsorption positioning, the gas in the hose is mainly drawn by the cylinder 4160. Then, the sleeve 4170 connects with the suction head 4180, which generates suction in the middle of the suction cup 460 to adsorb and clamp the surfaces of the two curved plates. Under the action of suction, the suction head 4180 compresses the spring to press the outer walls of the two curved plates tightly against the inverted trapezoidal bracket 450, providing support for both sides of the two curved plates. The telescopic design of the suction head 4180 ensures that curved plates with different curvatures can be effectively clamped, making up for the support gap between the inverted trapezoidal bracket 450 and the curved plates.

[0024] like Figure 3 , Figures 5 to 8 As shown, sleeves 4170 are symmetrically fixed to both sides of the inverted trapezoidal bracket 450. A suction head 4180 is elastically slidably connected to the inner cavity of the sleeve 4170. A suction cup 460 is fixed to the end of the suction head 4180. A cylinder 4160 is fixedly connected to the bottom of the sleeve 4170 through a pair of hoses. Slide rods 440 are fixed to both sides of the inverted trapezoidal bracket 450. The outer wall of the slide rod 440 is slidably connected to the side groove 430. A pressure sensor 490 is fixed to the welding module 300. A contact rod 480 is fixed to the end of the pressure sensor 490.

[0025] The above scheme is adopted as follows: During welding, the welding head of the welding module 300 is adjusted to an appropriate position and remains stationary. The arc-shaped support plate 420 continuously drives the arc-shaped plate to perform an arc-like motion outside the welding head, welding the seam. Simultaneously, with pressure detection from the pressure sensor 490 and contact rod 480, and under real-time control by the external intelligent control system, the electric actuator 470 pushes the inverted trapezoidal bracket 450 outwards or inwards by a small distance, ensuring that the distance between the welding head and the welding position remains dynamically balanced, enabling precise welding and improving welding stability. When the pressure is within the preset range, the electric actuator 470 maintains the inverted trapezoidal bracket 450 in its current position, and the arc plate 410 drives the arc-shaped support plate 420 to rotate along the same axis, ensuring that the two arc-shaped plates on the inverted trapezoidal bracket 450 are evenly welded together.

[0026] like Figure 2 , Figure 7 , Figures 9 to 11 As shown, the automatic air sweeping mechanism 500 includes a pair of air outlet pipes 510 fixed to both sides of the arc-shaped support plate 420, and a plurality of air jets 520 are fixedly connected to the bottom of the air outlet pipes 510 at equal intervals; a guide rod 570 is fixedly connected to the inner side of the top of the mounting plate 200, and push-pull rods 560 are symmetrically slidably connected to the outer walls of both sides of the guide rods 570; an arc-shaped sleeve 540 is slidably sleeved on each of the pair of push-pull rods 560 through a rubber plug; the upper ends of the pair of arc-shaped sleeves 540 are fixedly connected to the air outlet pipes 510, and the other ends of the arc-shaped sleeves 540 are fixedly connected to the air vent pipes 580; the end of the air vent pipe 580 is installed on the air outlet pipes 510 through a first one-way valve 530; a second one-way valve 550 is installed on the end of the arc-shaped sleeves 540 away from the air outlet pipes 510, and the outer wall of the arc-shaped sleeves 540 slides against the inner side of the mounting plate 200.

[0027] Using the above scheme: Since the first one-way valve 530 can only allow gas to enter the exhaust pipe 510, and the second one-way valve 550 can only allow gas to enter the arc-shaped sleeve 540, when blowing air, the exhaust pipe 510 moves upward around its far circumference, causing the arc-shaped sleeve 540 and the ventilation pipe 580 to move synchronously. At this time, the push-pull rod 560 remains stationary, so the rubber plug squeezes the inner cavity of the arc-shaped sleeve 540, causing the arc-shaped sleeve 540 to continuously fit onto the outer wall of the push-pull rod 560. At this time, the gas inside the arc-shaped sleeve 540 is squeezed into the exhaust pipe 510 along the ventilation pipe 580, and finally discharged through the jet nozzle 520, spraying air onto the inner surface of the arc-shaped support plate 420, blowing the welding debris off from the waste discharge port. At this time, the push-pull rod 560 on the other side can slide out of the guide rod 570 to obtain the corresponding displacement without hindering the movement.

[0028] Working principle and usage process of this invention: First, before welding, the two curved plates to be welded must be placed on the inverted trapezoidal bracket 450, ensuring alignment of the welding areas. Then, two suction cups 460 are used to suction the two curved plates, which, with the support of the inverted trapezoidal bracket 450, remain in contact and are clamped. During suction positioning, gas is drawn from the hose by the cylinder 4160, and then connected to the suction head 4180 via the sleeve 4170, generating suction in the center of the suction cups 460 to clamp the surfaces of the two curved plates. Under the suction, the suction head 4180 compresses the spring, pressing the outer walls of the two curved plates tightly against the inverted trapezoidal bracket 450, providing support on both sides of the curved plates. The telescopic design of the suction head 4180 ensures effective clamping of curved plates with different curvatures, compensating for the support gap between the inverted trapezoidal bracket 450 and the curved plates. Due to the inverted trapezoidal design of the inverted trapezoidal bracket 450, the two arc-shaped plates can be welded flexibly depending on the welding surface. The concave side can face upwards, and the two sides of the convex side can abut against the inverted trapezoidal bracket 450. Alternatively, the convex side can face upwards, and the two sides of the concave side can be hooked onto the inverted trapezoidal bracket 450. Secondly, after the two arc-shaped plates to be welded are adsorbed and clamped, the drive motor 4110 is started to drive the gear 4120 to rotate, so that the gear 4120 meshes with the arc rack 4100, thereby driving the arc plate 410 to rotate. The arc plate 410 drives the arc support plate 420 to rotate on the side wall of the mounting plate 200. At the same time, according to the different curvatures of the arc-shaped plates, the electric actuator 470 is started to push the inverted trapezoidal bracket 450 close to the welding head of the welding module 300. With the cooperation of the welding module 300, the welding head is accurately positioned at the weld position for welding. Secondly, during the welding process, the end of the contact rod 480 located on the welding module 300 slides against the surface of the arc-shaped plate, and the pressure of the contact rod 480 is measured in real time by the pressure sensor 490. When the pressure is within the preset range, the electric actuator 470 keeps the inverted trapezoidal bracket 450 in its current position, and the arc plate 410 drives the arc support plate 420 to rotate along the same axis, so that the two arc-shaped plates on the inverted trapezoidal bracket 450 are evenly welded together. When the pressure detected by the pressure sensor 490 is about to exceed the preset range, it means that the distance between the arc-shaped plate and the welding head is too close. At this time, the electric actuator 470 needs to be activated to drive the inverted trapezoidal bracket 450 to retract a small distance. When the pressure detected by the pressure sensor 490 is about to be less than the preset range, the electric actuator 470 needs to push the inverted trapezoidal bracket 450 outward a small distance to keep the distance between the welding head and the welding position dynamically balanced. Under the real-time control of the external intelligent control system, precise welding is achieved, and welding stability is improved. During welding, the welding head of the welding module 300 is adjusted to the appropriate position and remains stationary. The arc-shaped support plate 420 drives the arc-shaped plate to make arc-shaped movements outside the welding head to weld the weld. Finally, whenever the arc-shaped support plate 420 moves, it can drive the air outlet pipes 510 on both sides to move synchronously, so as to... Figure 9 Taking the left side as an example, when the vent pipe 510 moves clockwise along the inner circumference of the mounting plate 200, it can drive the arc-shaped sleeve 540 and the vent pipe 580 to move synchronously. At this time, the push-pull rod 560 remains stationary. Therefore, the inner cavity of the arc-shaped sleeve 540 is squeezed by the rubber plug, causing the arc-shaped sleeve 540 to continuously fit into the outer wall of the push-pull rod 560. At this time, the gas inside the arc-shaped sleeve 540 is squeezed into the vent pipe 510 along the vent pipe 580, and finally discharged through the jet nozzle 520, spraying air onto the inner surface of the arc-shaped support plate 420, blowing the welding debris off from the debris discharge port. During this process, since the end of the push-pull rod 560 on the other side has reached the end of the arc-shaped sleeve 540 and cannot be stretched further, the arc-shaped sleeve 540 can drive the push-pull rod 560 to slide out of the guide rod 570 to obtain the corresponding displacement without hindering the movement. Then, when gear 4120 meshes with arc rack 4100, causing arc plate 410 and arc support plate 420 to move in opposite directions, gear 4120 can move upward along vertical groove rod 4150 at the bend, reaching the other side of the spiral tooth to continue meshing. At this time, air outlet pipe 510 moves counterclockwise. Figure 11 As indicated by the arrow, since the first one-way valve 530 can only allow gas to enter the outlet pipe 510, when the push-pull rod 560 slides out of the arc sleeve 540, gas continuously enters the arc sleeve 540 through the second one-way valve 550, thereby completing the reset.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent welding machine for arc-shaped automotive sheet metal, comprising a worktable (100), wherein a mounting plate (200) is fixedly connected to the top edge of the worktable (100), and a welding module (300) is mounted on the top of the mounting plate (200), characterized in that: Also includes: A clamping and rotating mechanism (400) is located on a worktable (100); An automatic air sweeping mechanism (500) is connected to a clamping and rotating mechanism (400); The clamping and rotating mechanism (400) includes a support frame (4130) fixed to the top of the workbench (100) on the side away from the mounting plate (200). The top of the support frame (4130) is slidably connected to an arc plate (410). The side wall of the arc plate (410) is rotatably connected to the side wall of the mounting plate (200) through an arc-shaped support plate (420). The arc-shaped support plate (420) has side grooves (430) on both sides and a pair of waste discharge ports in the middle.

2. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 1, characterized in that: The clamping and rotating mechanism (400) further includes a T-shaped rod (4140) slidably connected to the edge of the worktable (100). The T-shaped rod (4140) is elastically connected to the worktable (100), and a drive motor (4110) is fixedly connected to the top of the T-shaped rod (4140).

3. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 2, characterized in that: The output end of the drive motor (4110) is movably connected to a vertical slot rod (4150), and a gear (4120) is fixed to the end. The outer wall of the gear (4120) is meshed with an arc rack (4100). The side wall of the arc rack (4100) is fixed to the arc plate (410). The bottom of the vertical slot rod (4150) is fixed to the worktable (100). The teeth of the arc rack (4100) are arranged in a spiral pattern.

4. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 3, characterized in that: An electric actuator (470) and a cylinder (4160) are fixedly connected to the middle part of the arc-shaped support plate (420), and an inverted trapezoidal bracket (450) is fixedly connected to the output end of the electric actuator (470).

5. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 4, characterized in that: The inverted trapezoidal bracket (450) has sleeves (4170) symmetrically fixed to both sides. The inner cavity of the sleeve (4170) is elastically slidably connected to a suction head (4180). The end of the suction head (4180) is fixedly connected to a suction cup (460). The cylinder (4160) is fixedly connected to the bottom of the sleeve (4170) through a pair of hoses.

6. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 5, characterized in that: Both sides of the inverted trapezoidal bracket (450) are fixedly connected to sliding rods (440), the outer wall of the sliding rods (440) is slidably connected to the side groove (430), a pressure sensor (490) is fixedly connected to the welding module (300), and a contact rod (480) is fixedly connected to the end of the pressure sensor (490).

7. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 1, characterized in that: The automatic air sweeping mechanism (500) includes a pair of air outlet pipes (510) fixed to both sides of the arc-shaped support plate (420), and a number of air jets (520) are fixedly connected at equal intervals at the bottom of the air outlet pipes (510).

8. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 7, characterized in that: A guide rod (570) is fixedly connected to the inner side of the top of the mounting plate (200). Push-pull rods (560) are symmetrically slidably connected to the outer walls of both sides of the guide rod (570). Each pair of push-pull rods (560) is slidably sleeved with an arc-shaped sleeve (540) through a rubber plug.

9. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 8, characterized in that: The upper ends of the pair of arc sleeves (540) are fixed to the air outlet pipe (510), and the other ends of the arc sleeves (540) are fixedly connected to the air vent pipe (580). The end of the air vent pipe (580) is installed on the air outlet pipe (510) through the first one-way valve (530).

10. The intelligent welding machine for arc-shaped automotive sheet metal according to claim 9, characterized in that: Each of the arc-shaped sleeves (540) is equipped with a second one-way valve (550) at the end away from the air outlet pipe (510), and the outer wall of each arc-shaped sleeve (540) slides against the inner side of the mounting plate (200).

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