A welding device capable of multi-angle welding of aluminum alloy

Abstract

The present application relates to the technical field of aluminum alloy welding, in particular to a welding device capable of multi-angle welding of aluminum alloy, which comprises a base, a double-joint mechanical arm fixedly installed on the upper end face of the base, and a multi-angle welding assembly fixedly connected to the output end of the double-joint mechanical arm; the multi-angle welding assembly comprises a fixed sleeve fixedly connected to the output end of the double-joint mechanical arm. The present application can improve the freedom degree of welding head welding angle adjustment, improve the versatility of the aluminum alloy welding device, and simultaneously realize the weaving welding operation of aluminum alloy bar or pipe, which is beneficial to improve the welding seam formation quality of the aluminum alloy bar or pipe, and the heat input received by the aluminum alloy bar or pipe during rotary welding can be self-regulated according to its own diameter size, and the weaving frequency of the welding head can automatically match the rotary welding speed of the aluminum alloy bar or pipe, which is beneficial to ensure the weaving quality of the aluminum alloy bar or pipe.

Description

Technical Field

[0001] This invention relates to the field of aluminum alloy welding technology, and more specifically to a welding device capable of welding aluminum alloys from multiple angles. Background Technology

[0002] Aluminum alloys are alloys composed of aluminum and other elements such as magnesium, silicon, or zinc. They possess properties such as lightweight, high strength, and corrosion resistance. To meet the needs of different applications, aluminum alloys are manufactured into components of various shapes, such as aluminum alloy bars or tubular parts. Welding aluminum alloy bars or tubular parts often employs a rotational welding method. For example, CN109158787B discloses a welding device capable of multi-angle welding of aluminum alloys, which enables coordinated adjustment of the welding end and welding position for precise welding of aluminum alloy bars.

[0003] However, current welding equipment for aluminum alloy bars or tubes has limited freedom in adjusting the welding angle, making it difficult to achieve arbitrary angle adjustment at the welding end. Furthermore, the welding methods are relatively limited, making it unsuitable for rotary welding and spot welding of aluminum alloy bars or tubes, resulting in poor versatility. Additionally, when using rotary welding on aluminum alloy bars or tubes, it often only supports angle adjustment at the welding end, making it difficult to coordinate with sway welding operations, thus limiting the quality of the weld. Moreover, the diameter of aluminum alloy bars or tubes varies significantly, and the rotational speed cannot be adjusted for different diameters during rotary welding. This results in different arc lengths rotated per unit time for different diameters, making it difficult to control the heat input received by the aluminum alloy bars or tubes, thus affecting the welding quality. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a welding device for welding aluminum alloys at multiple angles. It can effectively solve the problems of low freedom of welding angle adjustment, difficulty in achieving high-precision adjustment of welding angle at the welding end, resulting in poor versatility of aluminum alloy welding devices; difficulty in achieving coordinated oscillating welding operation, resulting in limited weld quality; and difficulty in controlling the heat input received by aluminum alloy bars or tubes of different diameters during rotary welding, which affects the welding quality of aluminum alloy bars or tubes.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a welding apparatus for welding aluminum alloys at multiple angles, comprising:

[0007] A base, on which a double-section robotic arm is fixedly mounted, and a multi-angle welding assembly is fixedly connected to the output end of the double-section robotic arm;

[0008] The multi-angle welding assembly includes a fixed sleeve fixedly connected to the output end of a double-section robotic arm. A rotating sleeve is rotatably connected to the outer peripheral wall of the fixed sleeve. A lateral fixing frame is fixedly connected to the outer peripheral wall of the fixed sleeve. A limit ring is fixedly connected to the end of the lateral fixing frame. A ball joint is rotatably connected to the inner side of the limit ring. A welding head is fixedly installed at the end of the ball joint outside the rotating sleeve. A slide rail is fixedly connected to the inner wall of the rotating sleeve. A slider is slidably connected to the inner side of the slide rail. A telescopic rod is hinged to the bottom end of the slider. The telescopic end of the telescopic rod is fixedly connected to the end of the ball joint away from the welding head. An adjustment drive component is fixedly connected to the outer peripheral wall of the rotating sleeve. The adjustment drive component is used to drive the welding head to move to achieve multi-directional angle adjustment of the welding head.

[0009] The upper surface of the base is fixedly connected to a rotary welding assembly and a detection and control assembly. The rotary welding assembly is used to drive the aluminum alloy to rotate in order to achieve rotary welding of the aluminum alloy.

[0010] The detection and control component is used to detect the diameter of the aluminum alloy rod, and the detection and control component is electrically connected to the multi-angle welding component and the rotary welding component.

[0011] Furthermore, the adjustment drive component includes a gear ring fixedly connected to the outer peripheral wall of the rotating sleeve, a low-speed motor fixedly connected to the outer peripheral wall of the fixed sleeve, a drive gear fixedly connected to the output end of the low-speed motor, the drive gear meshing with the gear ring, a small electric push rod fixedly installed on the inner wall of the rotating sleeve, and a transmission rod hinged between the output end of the small electric push rod and the slider.

[0012] Furthermore, the rotary welding assembly includes two support frames fixedly connected to the upper surface of the base. A rotating shaft is rotatably connected to each of the two support frames. A clamping component is fixedly connected to the ends of the two rotating shafts away from the support frames. A first-order synchronous wheel is fixedly connected to the ends of the two rotating shafts near the support frames. Two rotating rods are rotatably connected to the upper surface of the base via several support rings. A second-order synchronous wheel is fixedly connected to the ends of the two rotating rods near the support frames. The two second-order synchronous wheels are respectively connected to the two first-order synchronous wheels via synchronous tracks. A dual-axis motor is fixedly installed on the upper surface of the base. The two output ends of the dual-axis motor are respectively fixedly connected to the ends of the two rotating rods.

[0013] Furthermore, the clamping component includes a rectangular tube fixedly connected to the end of the rotating shaft. The outer peripheral wall of the rotating shaft is provided with a threaded section, and a threaded sleeve is threadedly connected to the threaded section. A hexagonal knob is fixedly connected to the outer peripheral wall of the threaded sleeve. A translation frame is rotatably connected to the outer peripheral wall of the threaded sleeve. Double toothed plates are fixedly connected to both the upper and lower ends of the translation frame. The double toothed plates are in contact with and slide with the rectangular tube.

[0014] Furthermore, the clamping component also includes two bearing seats fixedly connected to the outer wall of the rectangular tube. The two bearing seats are distributed on both sides of the double-toothed plate and arranged symmetrically. Guide rods are rotatably connected to both bearing seats. Transmission gears are fixedly connected to the upper and lower ends of the two guide rods. Each transmission gear meshes with its corresponding double-toothed plate. Transmission plates are fixedly connected to the outer peripheral walls of the two guide rods. Transverse plates are hinged to the ends of the two transmission plates. Buffer clamping components are fixedly connected to the ends of each transverse plate. Limiting holes are provided on the two transverse plates. Limiting collars are slidably connected to the limiting holes. Two supporting slide rods are fixedly connected to the outer wall of the rectangular tube. A through hole is provided in the middle of the limiting collar. The limiting collar slides with the supporting slide rods through the through hole.

[0015] Furthermore, the detection and control component includes a support fixedly connected to the upper surface of the base, an electric cylinder push rod fixedly installed on the support, an adapter frame fixedly connected to the output end of the electric cylinder push rod, two lifting blocks slidably connected inside the adapter frame, roller brackets fixedly connected to the ends of the two lifting blocks outside the adapter frame, several rollers rotatably connected to the ends of each roller bracket away from the lifting blocks, several tension springs fixedly connected to the outer wall of the adapter frame, and the upper and lower ends of the tension springs fixedly connected to the two roller brackets respectively.

[0016] Furthermore, the detection and control component also includes a rectangular frame fixedly connected to the outer peripheral wall of the output end of the electric cylinder push rod. Two variable resistance slide rods are fixedly connected to the rectangular frame. Sliding plates are slidably connected to both variable resistance slide rods. The two sliding plates are respectively fixedly connected to the ends of the two lifting blocks through connecting frames. A PLC controller is fixedly installed on the outer wall of the support.

[0017] The variable resistance slider and the slider form a sliding rheostat. When the slider moves toward the end of the variable resistance slider that is away from the output end of the electric cylinder push rod, the resistance value of the sliding rheostat increases. The sliding rheostat located above the electric cylinder push rod, together with the small electric push rod, the PLC controller and the external power supply, forms a closed series circuit. The sliding rheostat located below the electric cylinder push rod, together with the dual-axis motor and the external power supply, forms a closed series circuit.

[0018] Furthermore, the buffer clamping component consists of a concave frame and an arc-shaped silicone rubber pad, wherein the concave frame is fixedly connected to the end of the transverse page plate, and the arc-shaped silicone rubber pad is fixedly connected to the inner side of the concave frame.

[0019] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0020] 1. This invention features a multi-angle welding assembly. A low-speed motor drives a drive gear to rotate, causing the rotating sleeve and slide rail to rotate synchronously. Simultaneously, a drive slider moves relative to the slide rail, allowing the slider to drive the ball head shaft to rotate relative to the limiting ring via a telescopic rod. This enables the ball head shaft to rotate freely within the limiting range of the limiting ring, allowing the welding end of the welding head to be adjusted to any position. This increases the freedom of adjustment for the welding angle of the welding head, enabling not only rotary welding of aluminum alloy rods or tubes but also convenient spot welding operations during welding repair of aluminum alloy rods or tubes, effectively improving the versatility of the aluminum alloy welding device. A PLC controller independently controls a small electric push rod, allowing it to reciprocate and extend at a certain frequency. This drives the welding end of the welding head to oscillate back and forth, synergistically achieving the oscillating welding operation of aluminum alloy rods or tubes, which helps improve the weld quality of the aluminum alloy rods or tubes.

[0021] 2. The present invention is provided with a rotary welding assembly. By driving two transverse plates to move two buffer clamping parts synchronously, the two buffer clamping parts can move in opposite directions away from the rectangular tube at the same time. This allows the aluminum alloy rods or tubes to be quickly clamped and fixed by several arc-shaped silicone rubber pads. At the same time, the two aluminum alloy rods or tubes can be moved closer to each other to ensure the degree of fit and stability of the connection between the two aluminum alloy rods or tubes. It can also drive two rotating shafts to rotate synchronously in the same direction, so that the aluminum alloy rods or tubes can rotate synchronously to complete the rotary welding operation of the aluminum alloy rods or tubes.

[0022] 3. The present invention includes a detection and control component. Before welding aluminum alloy rods or tubes, the two roller supports are driven to move closer to the aluminum alloy rods or tubes by controlling the electric cylinder push rod. This allows the two lifting blocks to move up and down relative to the transfer frame, and drives the two sliding plates to slide up and down relative to the two variable resistance sliding rods. This controls the output power and drive speed of the dual-axis motor, so that the heat input received by the aluminum alloy rods or tubes during rotary welding can be automatically adjusted according to their own diameter. This avoids weld defects caused by overheating or insufficient heat input. At the same time, the output power of the small electric push rod, i.e., the frequency of its reciprocating extension and retraction, can be controlled, so that the welding frequency of the welding head can automatically match the rotational welding speed of the aluminum alloy rods or tubes, which helps to ensure the welding quality of the aluminum alloy rods or tubes. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of a portion of the multi-angle welding assembly structure in this invention;

[0026] Figure 3 This is a cross-sectional view of the rotating sleeve portion structure in this invention;

[0027] Figure 4 This is an exploded view of the slide rail and slider structure in this invention;

[0028] Figure 5 This is a schematic diagram of a portion of the rotary welding assembly structure in this invention;

[0029] Figure 6 This is an exploded view of the structure of the clamping component in this invention;

[0030] Figure 7 This is a schematic diagram of the detection and control component structure in this invention;

[0031] Figure 8 This is a cross-sectional view of the structure of the transfer frame in this invention.

[0032] Reference numerals: 1. Base; 2. Double-section robotic arm; 3. Multi-angle welding assembly; 31. Fixed sleeve; 32. Rotating sleeve; 33. Lateral fixing frame; 34. Limiting ring; 35. Ball joint shaft; 36. Welding head; 37. Slide rail; 38. Slider; 39. Telescopic rod; 4. Adjustment drive component; 41. Gear ring; 42. Low-speed motor; 43. Drive gear; 44. Small electric push rod; 45. Transmission rod; 5. Rotary welding assembly; 51. Support frame; 52. Rotating shaft; 53. No. 1 synchronous pulley; 54. Rotating rod; 55. No. 2 synchronous pulley; 56. Synchronous track; 57. Dual-axis motor; 6. Detection and control assembly; 61. Support 62. Electric cylinder push rod; 63. Adapter frame; 64. Lifting block; 65. Roller bracket; 66. Roller; 67. Tension spring; 68. Rectangular frame; 69. Variable resistance slide rod; 610. Sliding plate; 611. PLC controller; 7. Clamping component; 71. Rectangular tube; 72. Threaded section; 73. Threaded sleeve; 74. Hexagonal knob; 75. Translation frame; 76. Double toothed plate; 77. Shaft seat; 78. Guide rod; 79. Transmission gear; 710. Transmission leaf plate; 711. Transverse leaf plate; 712. Limiting hole; 713. Limiting collar; 714. Support slide rod; 8. Buffer clamping component; 81. Concave frame; 82. Arc-shaped silicone rubber pad. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] The present invention will be further described below with reference to embodiments.

[0035] Example: Refer to Figures 1 to 8A welding device for multi-angle welding of aluminum alloys includes: a base 1, a double-section robotic arm 2 fixedly mounted on the upper surface of the base 1, and a multi-angle welding assembly 3 fixedly connected to the output end of the double-section robotic arm 2; the multi-angle welding assembly 3 includes a fixed sleeve 31 fixedly connected to the output end of the double-section robotic arm 2, a rotating sleeve 32 rotatably connected to the outer peripheral wall of the fixed sleeve 31, a lateral fixing frame 33 fixedly connected to the outer peripheral wall of the fixed sleeve 31, a limit ring 34 fixedly connected to the end of the lateral fixing frame 33, a ball head shaft 35 rotatably connected to the inner side of the limit ring 34, a welding head 36 fixedly mounted at the end of the ball head shaft 35 outside the rotating sleeve 32, a slide rail 37 fixedly connected to the inner wall of the rotating sleeve 32, and a slider 3 slidably connected to the inner side of the slide rail 37. 8. A telescopic rod 39 is hinged to the bottom end of the slider 38. The telescopic end of the telescopic rod 39 is fixedly connected to the end of the ball head shaft 35 away from the welding head 36. An adjustment drive component 4 is fixedly connected to the outer peripheral wall of the rotating sleeve 32. The adjustment drive component 4 is used to drive the welding head 36 to move so as to realize the multi-directional angle adjustment of the welding head 36. The adjustment drive component 4 includes a toothed ring 41 fixedly connected to the outer peripheral wall of the rotating sleeve 32. A low-speed motor 42 is fixedly connected to the outer peripheral wall of the fixed sleeve 31. A drive gear 43 is fixedly connected to the output end of the low-speed motor 42. The drive gear 43 meshes with the toothed ring 41. A small electric push rod 44 is fixedly installed on the inner wall of the rotating sleeve 32. A transmission rod 45 is hinged between the output end of the small electric push rod 44 and the slider 38.

[0036] By controlling the low-speed motor 42 to drive the drive gear 43 to rotate, the rotating sleeve 32 and the slide rail 37 rotate synchronously. At the same time, the drive slider 38 moves relative to the slide rail 37, so that the slider 38 can drive the ball head shaft 35 to rotate relative to the limiting ring 34 through the telescopic rod 39. This allows the ball head shaft 35 to rotate freely within the limiting range of the limiting ring 34. Specifically, in the three-dimensional rectangular coordinate system established with the ball head shaft 35 as the origin, the rotation range of the ball head shaft 35 within the limiting ring 34 is ±60° around the negative Z-axis. This allows the welding end of the welding head 36 to be adjusted to any position, thereby increasing the freedom of adjustment of the welding angle of the welding head 36. This not only enables the rotational welding of aluminum alloy rods or pipes, but also facilitates spot welding operations of aluminum alloy rods or pipes during welding repair. This effectively improves the versatility of the aluminum alloy welding device, increases the weldable range, and facilitates welding needs in different scenarios.

[0037] Reference Figure 1 , Figure 5 and Figure 6A rotary welding assembly 5 is fixedly connected to the upper surface of the base 1. The rotary welding assembly 5 is used to drive the aluminum alloy to rotate in order to achieve rotary welding of the aluminum alloy. The rotary welding assembly 5 includes two support frames 51 fixedly connected to the upper surface of the base 1. A rotating shaft 52 is rotatably connected to each of the two support frames 51. A clamping component 7 is fixedly connected to the ends of the two rotating shafts 52 away from the support frames 51. A first synchronous wheel 53 is fixedly connected to the ends of the two rotating shafts 52 near the support frames 51. Two rotating rods 54 are rotatably connected to the upper surface of the base 1 through several support rings. A second synchronous wheel 55 is fixedly connected to the ends of the two rotating rods 54 near the support frames 51. Wheel 55 is connected to two first synchronous wheels 53 via synchronous tracks 56. A dual-axis motor 57 is fixedly installed on the upper surface of the base 1. The dual-axis motor 57 is a variable frequency speed control motor. The two output ends of the dual-axis motor 57 are fixedly connected to the ends of two rotating rods 54 respectively. The clamping component 7 includes a rectangular tube 71 fixedly connected to the end of the rotating shaft 52. The outer peripheral wall of the rotating shaft 52 is provided with a threaded section 72. A threaded sleeve 73 is threadedly connected to the threaded section 72. A hexagonal knob 74 is fixedly connected to the outer peripheral wall of the threaded sleeve 73. A translation frame 75 is rotatably connected to the outer peripheral wall of the threaded sleeve 73. Double toothed plates 76 are fixedly connected to both the upper and lower ends of the translation frame 75. The double toothed plates 76 and the rectangular tube 71 are connected to each other. The clamping component 7 also includes two bearing seats 77 fixedly connected to the outer wall of the rectangular tube 71. The two bearing seats 77 are distributed on both sides of the double toothed plate 76 and are arranged symmetrically. Guide rods 78 are rotatably connected to each of the two bearing seats 77. Transmission gears 79 are fixedly connected to the upper and lower ends of the two guide rods 78. Each transmission gear 79 meshes with its corresponding double toothed plate 76. The meshing transmission between the transmission gears 79 and the double toothed plate 76 can further limit the horizontal movement of the double toothed plate 76 and the translation frame 75. Transmission plates 710 are fixedly connected to the outer peripheral walls of the two guide rods 78. Transverse plates 711 are hinged to the ends of the two transmission plates 710. Each transverse slide plate 711 is fixedly connected to a buffer clamp 8 at its end. The buffer clamp 8 consists of a concave frame 81 and an arc-shaped silicone rubber pad 82. The arc-shaped silicone rubber pad 82 is made of anti-slip and high-temperature resistant silicone rubber material. The concave frame 81 is fixedly connected to the end of the transverse slide plate 711, and the arc-shaped silicone rubber pad 82 is fixedly connected to the inner side of the concave frame 81. Limiting holes 712 are opened on the two transverse slide plates 711. Limiting collars 713 are slidably connected at the limiting holes 712. Two supporting slide rods 714 are fixedly connected to the outer wall of the rectangular tube 71. A through hole is opened in the middle of the limiting collar 713. The limiting collar 713 slides with the supporting slide rods 714 through the through hole.

[0038] By driving two transverse sliding plates 711 to move two buffer clamping parts 8 synchronously, the two buffer clamping parts 8 can move in opposite directions while moving away from the rectangular tube 71, so as to use several arc-shaped silicone rubber pads 82 to quickly clamp and fix the outer peripheral wall of the aluminum alloy rod or tube. At the same time, the two aluminum alloy rods or tubes can move closer to each other to ensure the degree of connection and stability of the connection between the two aluminum alloy rods or tubes. It can also drive two rotating shafts 52 to rotate synchronously in the same direction, so that the aluminum alloy rods or tubes can rotate synchronously to complete the rotational welding operation of the aluminum alloy rods or tubes.

[0039] Reference Figure 1 , Figure 7 and Figure 8 A detection and control component 6 is fixedly connected to the upper surface of the base 1. The detection and control component 6 is used to detect the diameter of the aluminum alloy rod. The detection and control component 6 is electrically connected to the multi-angle welding component 3 and the rotary welding component 5. The detection and control component 6 includes a support 61 fixedly connected to the upper surface of the base 1. An electric cylinder push rod 62 is fixedly installed on the support 61. A transition frame 63 is fixedly connected to the output end of the electric cylinder push rod 62. Two lifting blocks 64 are slidably connected inside the transition frame 63. Roller brackets 65 are fixedly connected to the ends of the two lifting blocks 64 outside the transition frame 63. Several rollers 66 are rotatably connected to the end of each roller bracket 65 away from the lifting block 64. Several tension springs 67 are fixedly connected to the outer wall of the transition frame 63. The upper and lower ends of the tension springs 67 are respectively fixedly connected to the two roller brackets 65. Component 6 also includes a rectangular frame 68 fixedly connected to the outer peripheral wall of the output end of the electric cylinder push rod 62. Two variable resistance slide rods 69 are fixedly connected to the rectangular frame 68. Sliding plates 610 are slidably connected to each of the two variable resistance slide rods 69. The two sliding plates 610 are fixedly connected to the ends of the two lifting blocks 64 through connecting frames. A PLC controller 611 is fixedly installed on the outer wall of the support 61. The variable resistance slide rods 69 and sliding plates 610 form a sliding rheostat. When the sliding plate 610 moves toward the end of the variable resistance slide rod 69 located away from the output end of the electric cylinder push rod 62, the resistance value of the sliding rheostat increases. The sliding rheostat located above the electric cylinder push rod 62, together with the small electric push rod 44, the PLC controller 611 and the external power supply, forms a closed series circuit. The sliding rheostat located below the electric cylinder push rod 62, together with the dual-axis motor 57 and the external power supply, forms a closed series circuit.

[0040] Specifically, the PLC controller 611 has a built-in PID controller, which receives the voltage signal from the sliding rheostat and outputs a control signal to the small electric push rod 44 to control the reciprocating extension and retraction of the small electric push rod 44, i.e., the oscillation frequency of the welding head 36. It should be noted that the PLC controller 611 controls the small electric push rod 44 to reciprocate and retract at a small amplitude, i.e., the amplitude and movement trajectory of the welding head 36 oscillating around the ball joint shaft 35 are very small, which will not affect the welding effect of aluminum alloy rods or tubes.

[0041] By controlling the electric cylinder push rod 62, the two roller brackets 65 are driven to move closer to the aluminum alloy rod or tube, allowing the two lifting blocks 64 to move up and down relative to the transition frame 63, and driving the two sliding plates 610 to slide up and down relative to the two variable resistance sliding rods 69, thereby controlling the output power and drive speed of the dual-axis motor 57. When the diameter of the aluminum alloy rod or tube is large, if the aluminum alloy rod or tube is driven to rotate at the original speed, the welding length of the welding head 36 per unit time will be relatively long, resulting in insufficient heat input during welding. Therefore, it is necessary to drive the aluminum alloy rod or tube to rotate at a slower speed to reduce the welding length per unit time, making the heat during welding more concentrated, maintaining the welding heat input of the aluminum alloy rod or tube, and avoiding defects such as cracks or insufficient penetration at the weld due to insufficient heat input. When the diameter of the aluminum alloy rod or tube is small, if the aluminum alloy rod or tube is driven to rotate at the original speed, the welding length of the welding head 36 per unit time will be relatively short, resulting in overheating during welding. Therefore, it is necessary to drive the aluminum alloy rod or tube to rotate at a slower speed. The aluminum alloy rods or tubes rotate at a relatively high rate, increasing the welding length per unit time and dispersing the heat during welding. This prevents overheating at the welding joints of smaller diameter aluminum alloy rods or tubes, thus preventing the expansion of the heat-affected zone of the weld. The heat input received by the aluminum alloy rods or tubes during rotary welding can be automatically adjusted according to their diameter, avoiding weld defects due to overheating or insufficient heat input. Simultaneously, the output power of the small electric actuator 44, i.e., its reciprocating extension and retraction, can be controlled. The frequency of movement can be adjusted so that when aluminum alloy rods or tubes with larger diameters are rotated and welded at a slower speed, the small electric push rod 44 can reciprocate and extend at a lower frequency, that is, the welding head 36 can perform oscillating welding at a lower frequency. When aluminum alloy rods or tubes with smaller diameters are rotated and welded at a faster speed, the welding head 36 can be driven to perform oscillating welding at a faster frequency, so that the oscillating welding frequency of the welding head 36 can automatically match the rotational welding speed of the aluminum alloy rods or tubes, which is beneficial to ensuring the oscillating welding quality of the aluminum alloy rods or tubes.

[0042] The small electric push rod 44 is independently controlled by the PLC controller 611, which enables the small electric push rod 44 to reciprocate and extend at a certain frequency, thereby driving the welding end of the welding head 36 to reciprocate and swing, so as to achieve the oscillation welding operation of aluminum alloy rods or tubes, which is beneficial to improving the weld formation quality of aluminum alloy rods or tubes.

[0043] The working principle of this invention is as follows:

[0044] In use, the aluminum alloy rod or tube is first fixed between several buffer clamps 8. The position of the welding head 36 is adjusted above the aluminum alloy rod or tube by controlling the double-section robotic arm 2. Then, the drive gear 43 is driven to rotate by controlling the low-speed motor 42. The meshing transmission between the drive gear 43 and the gear ring 41 drives the rotating sleeve 32 and the slide rail 37 to rotate. At the same time, the small electric push rod 44 is controlled to push or pull the transmission rod 45, so that the transmission rod 45 can drive the slider 38 to move relative to the slide rail 37. The slider 38 can drive the ball head shaft 35 to rotate relative to the limiting ring 34 through the telescopic rod 39. Since the rotating sleeve 32 can also drive the ball head shaft 35 to rotate relative to the limiting ring 34 when it rotates, the ball head shaft 35 can rotate freely within the limiting range of the limiting ring 34, so that the welding end of the welding head 36 can be adjusted to any position.

[0045] After the angle of the welding head 36 is adjusted, the small electric push rod 44 can be independently controlled by the PLC controller 611, so that the small electric push rod 44 can reciprocate and extend at a certain frequency, thereby driving the welding end of the welding head 36 to reciprocate and swing, so as to achieve the swaying welding operation of aluminum alloy rods or tubes.

[0046] During the process of fixing the aluminum alloy rod or tube between several buffer clamps 8, the threaded sleeve 73 can be driven to rotate by rotating the hexagonal knob 74. The threaded engagement between the threaded sleeve 73 and the threaded section 72 on the outer peripheral wall of the rotating shaft 52 drives the translation frame 75 to move horizontally, so that the translation frame 75 gradually moves closer to the support frame 51 and drives the double toothed plate 76 to move. The meshing transmission between the double toothed plate 76 and several transmission gears 79 on both sides drives the guide rod 78 and the transmission plate 710 to rotate, so that the transmission plate 710 can push the transverse plate 711 to move. Under the synchronous limiting sliding engagement of the limiting collar 713, the support slide rod 714 and the limiting hole 712, the two transverse plates 711 can synchronously drive the two buffer clamps 8 to move, so that the two buffer clamps 8 can move towards each other and away from the rectangular tube 71 while moving in opposite directions, so as to use several arc-shaped silicone rubber pads 82 to quickly clamp and fix the outer peripheral wall of the aluminum alloy rod or tube.

[0047] After the aluminum alloy rods or tubes are fixed, the two rotating rods 54 can be driven to rotate by controlling the dual-axis motor 57. The two rotating shafts 52 are driven to rotate synchronously in the same direction by the transmission action of the first synchronous wheel 53, the second synchronous wheel 55 and the synchronous track 56, so that the aluminum alloy rods or tubes can rotate synchronously to complete the rotation welding operation of the aluminum alloy rods or tubes.

[0048] Before welding the aluminum alloy rod or pipe at the welding head 36, the electric cylinder push rod 62 can be controlled to drive the adapter frame 63 and the two roller brackets 65 at the ends of the two lifting blocks 64 to move closer to the aluminum alloy rod or pipe. This allows several rollers 66 to move against the outer peripheral wall of the aluminum alloy rod or pipe, thereby enabling the two lifting blocks 64 to move up and down relative to the adapter frame 63. This, in turn, drives the two sliding plates 610 to slide up and down relative to the two variable resistance sliding rods 69. Since the horizontal movement distance of the roller brackets 65 driven by the electric cylinder push rod 62 is constant, the larger the diameter of the aluminum alloy rod or pipe, the greater the vertical movement distance of the two lifting blocks 64 relative to the adapter frame 63. The greater the vertical sliding distance of 610 on the variable resistance slider 69, and the greater the vertical sliding distance of the variable resistance slider 69 and the slider 610 to form a sliding rheostat, the greater the resistance value of the sliding rheostat when the slider 610 moves towards the end of the variable resistance slider 69 located away from the output end of the electric cylinder push rod 62, the greater the downward movement distance. At this time, the total resistance value in the closed circuit where the dual-axis motor 57 is located increases, and the total current decreases. That is, the output power and driving speed of the dual-axis motor 57 decrease, so that the aluminum alloy rod with a larger diameter can rotate at a slower speed, and vice versa, the aluminum alloy rod with a smaller diameter can rotate at a faster speed.

[0049] Similarly, in the closed series circuit formed by the sliding rheostat located above the electric cylinder push rod 62, the small electric push rod 44, the PLC controller 611, and the external power supply, the larger the diameter of the aluminum alloy rod or tube, the greater the upward movement of the slider 610 towards the end of the rheostat slider 69 located away from the output end of the electric cylinder push rod 62. This increases the resistance value of the sliding rheostat, the total resistance in the closed circuit containing the small electric push rod 44 increases, and the total current decreases. In other words, the output power of the small electric push rod 44 is smaller. Since the aluminum alloy rod with a larger diameter can rotate at a slower speed, the frequency of the reciprocating extension and retraction movement of the small electric push rod 44 controlled by the PLC controller 611 is reduced. This reduces the oscillation frequency of the welding head 36, thus enabling the oscillation frequency of the welding head 36 to automatically match the rotational welding speed of the aluminum alloy rod or tube.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding apparatus capable of multi-angle welding of aluminum alloys, characterized by, The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model discloses a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model discloses a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The utility model relates to a multi-angle welding assembly and a detection and control assembly for aluminum alloy rod piece, and belongs to the technical field of welding equipment. The detection and regulation assembly comprises a support fixedly connected to the end face of the base, an electric cylinder push rod fixedly installed on the support, an adapter frame body fixedly connected to the output end of the electric cylinder push rod, two lifting blocks slidingly connected in the adapter frame body, roller foot supports fixedly connected to the end portions of the two lifting blocks located outside the adapter frame body, a plurality of rollers rotatably connected to the end portions of each roller foot support away from the lifting block, a plurality of tension springs fixedly connected to the outer wall of the adapter frame body, and the upper and lower ends of the plurality of tension springs are fixedly connected with the two roller foot supports, respectively. The detection and regulation assembly further comprises a rectangular frame fixedly connected to the outer peripheral wall of the output end of the electric cylinder push rod, two variable resistance sliding rods fixedly connected to the rectangular frame, sliding pieces slidingly connected to the two variable resistance sliding rods, and the two sliding pieces are fixedly connected with the end portions of the two lifting blocks through connecting frames. The variable resistance sliding rod and the sliding piece form a sliding variable resistor, the resistance value of the sliding variable resistor increases when the sliding piece moves towards the end portion of the variable resistance sliding rod away from the output end of the electric cylinder push rod, and the sliding variable resistor located above the electric cylinder push rod, the small electric push rod, the PLC controller and the external power source form a closed series circuit, and the sliding variable resistor located below the electric cylinder push rod and the double-shaft motor and the external power source form a closed series circuit. The adjustment and driving part comprises a gear ring fixedly connected to the outer peripheral wall of the rotating sleeve, a low-speed motor fixedly connected to the outer peripheral wall of the fixed sleeve, a driving gear fixedly connected to the output end of the low-speed motor, and the driving gear and the gear ring are in meshing relationship, a small electric push rod fixedly installed on the inner wall of the rotating sleeve, and a transmission rod hingedly connected between the output end of the small electric push rod and the sliding block. The small electric push rod is independently controlled by the PLC controller, so that the small electric push rod can move back and forth at a certain frequency, and the welding end of the welding head can be driven to swing back and forth.

2. The welding apparatus capable of multi-angle welding of aluminum alloy according to claim 1, characterized by, The buffer clamping piece is composed of a concave frame and an arc-shaped silicone rubber clamping pad, the concave frame is fixedly connected to the end portion of the horizontal moving page plate, and the arc-shaped silicone rubber clamping pad is fixedly connected to the inner side of the concave frame.

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