An aluminum alloy door and window metal aluminum plate welding device and method

Abstract

The present invention relates to the field of welding technology, and particularly relates to a welding device and method for metal aluminum plates of aluminum alloy doors and windows, including a base, a support frame, a welding mover, a welder, a first clamping table, a first rotating plate, a lifter, a second clamping table, a second rotating plate and a second mover. The support frame is fixedly connected to the base and is located at the top of the base. The second mover is slidably arranged on the support frame. The second clamping table is arranged on the second mover. The second rotating plate is rotatably arranged on the second clamping table. The lifter is slidably arranged on one side of the support frame. The first rotating plate is rotatably arranged on the lifter. The first clamping table is arranged on the first rotating plate. The welding mover is arranged on one side of the support frame. The welder is connected to the welding mover. Thus, the door and window frame can be automatically flipped after welding on one side and then welded again, improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to a welding device and method for aluminum alloy doors and windows and metal aluminum plates. Background Art

[0002] The welding of aluminum alloy doors and windows and metal aluminum plates is a common manufacturing process, mainly used to connect aluminum alloy profiles and plates to ensure the stability and aesthetics of the structure. Common welding methods include gas shielded welding (TIG welding) and metal inert gas welding (MIG welding). TIG welding uses a non-consumable tungsten electrode and an inert gas shield, which is suitable for welding thin plates and precision components with high welding quality; MIG welding uses a continuously fed welding wire as the electrode and filler material, with a fast welding speed and is suitable for welding thick plates and long welds.

[0003] After the existing aluminum plate welding equipment completes the welding of two corners on one side of the door and window, it is necessary to manually flip the door and window and weld the two corners on the other side. This requires manual alignment and feeding, resulting in low work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding device and method for aluminum alloy doors and windows and metal aluminum plates, aiming to automatically flip the door and window frame after welding on one side and then perform welding to improve work efficiency.

[0005] To achieve the above purpose, in a first aspect, the present invention provides a welding device for aluminum alloy doors and windows and metal aluminum plates, including a base and a support frame. The support frame is fixedly connected to the base and is located on the top of the base. It also includes a welding mover, a welder, a first clamping table, a first rotating plate, a lifter, a second clamping table, a second rotating plate, and a second mover. The second mover is slidably arranged on the support frame, the second clamping table is arranged on the second mover, the second rotating plate is rotatably arranged on the second clamping table, the lifter is slidably arranged on one side of the support frame, the first rotating plate is rotatably arranged on the lifter, the first clamping table is arranged on the first rotating plate, the welding mover is arranged on one side of the support frame, and the welder is connected to the welding mover.

[0006] Wherein, the welding mover includes a transverse mover and a longitudinal mover. The transverse mover is arranged on the support frame, the longitudinal mover is slidably arranged on the transverse mover, and the welder is arranged on the longitudinal mover.

[0007] Wherein, the first clamping table includes a clamping table body, a sliding block, and a pressing cylinder. The sliding block is slidably arranged on the clamping table body, and the output end of the pressing cylinder is connected to the sliding block.

[0008] Among them, the lifter includes a lifting cylinder, a mounting plate and a support spring. The lifting cylinder is fixed on one side of the support frame. The mounting plate is connected to the output end of the lifting cylinder. The support spring is arranged between the lifting cylinder and the mounting plate. The first rotating plate is rotatably arranged on the mounting plate.

[0009] Among them, the aluminum alloy door and window metal aluminum plate welding equipment further includes an alignment plate. The alignment plate includes two alignment plate bodies and an adjustment screw. The two alignment plate bodies are slidably arranged on both sides of the support frame. The adjustment screw has two sections of opposite threads. The adjustment screw is threadedly connected to the two alignment plate bodies.

[0010] Among them, the alignment plate further includes a grinding structure. The grinding structure is arranged on the alignment plate body and is used for grinding the weld after welding.

[0011] Among them, the grinding structure includes a grinding wheel, a grinding motor and a grinding cylinder. The grinding cylinder is fixed on the alignment plate body. The grinding motor is arranged on the output end of the grinding cylinder. The grinding wheel is connected to the output end of the grinding motor.

[0012] Among them, the grinding structure further includes a return spring. The return spring is arranged between the grinding cylinder and the grinding motor.

[0013] In a second aspect, the present invention also provides a method for welding an aluminum alloy door and window metal aluminum plate, including: placing both sides of the aluminum alloy door and window frame on the first clamping table and the second clamping table respectively for fixing;

[0014] Starting the welding mover to drive the welder to the position where the weld is located for welding;

[0015] After welding is completed, the first clamping table is lifted by the lifter. At the same time, the second mover drives the second clamping table to move, so that the aluminum alloy door and window frame tilts and flips;

[0016] After the second clamping table moves to the other end of the support frame, the lifter moves downwards so that the aluminum alloy door and window frame flips 180°;

[0017] Starting the welding mover again to drive the welder to the position where the weld is located for welding.

[0018] For the aluminum alloy door and window metal aluminum plate welding equipment and method of the present invention, the base serves as the basic support structure of the entire equipment. The base not only provides a stable installation platform, but also bears the role of dispersing and bearing the weight of the equipment, ensuring the stability of the equipment during the welding process.

[0019] The support frame is fixedly connected to the base and is located at the top of the base. The support frame is the main frame structure of the equipment and is used to support and fix other components, such as the welding mover, the lifter, etc., to ensure the coordinated operation of each component.

[0020] The welding mover is installed on one side of the support frame. The welding mover can move along a predetermined path on the track, driving the welding torch to reach the specified welding position. By precisely controlling the movement trajectory of the welding mover, precise welding of complex structural parts can be achieved.

[0021] The welding torch is connected to the welding mover. The welding torch is a key component for performing the actual welding operation. It can be configured with corresponding welding heads, such as TIG or MIG welding torches, according to different welding requirements to adapt to different types of aluminum alloy materials and welding processes.

[0022] During use, place the door and window on the support frame and fix it on both sides by the first clamping table and the second clamping table. Then, perform welding by moving the welding mover. After welding is completed, start the lifter to drive the first clamping table to move upward, and at the same time, the second mover drives the second clamping table to slide, so as to drive the door frame to tilt. Until the second clamping table moves past the position where the lifter is located, the lifter descends to complete the flipping of the door and window frame. The first rotating plate and the second rotating plate allow the rotation of the door and window frame.

[0023] Through the coordinated action of the above components, this welding equipment can effectively complete the welding task of the metal aluminum plate of the aluminum alloy door and window. It can not only achieve precise positioning and fixation of the workpiece, but also flexibly adjust the position of the welding torch according to the welding requirements to ensure the welding quality and efficiency. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a structural diagram of a welding equipment for metal aluminum plates of aluminum alloy doors and windows of the present invention.

[0026] Figure 2 It is a right-side structural diagram of a welding equipment for metal aluminum plates of aluminum alloy doors and windows of the present invention.

[0027] Figure 3 It is a left-side structural diagram of a welding equipment for metal aluminum plates of aluminum alloy doors and windows of the present invention.

[0028] Figure 4 is Figure 3Partial enlarged view of detail A.

[0029] Figure 5 It is a flowchart of a method for welding metal aluminum plates of aluminum alloy doors and windows according to the present invention.

[0030] Base 101, support frame 102, welding mover 103, welder 104, first clamping table 105, first rotating plate 106, lifter 107, second clamping table 108, second rotating plate 109, second mover 110, lateral mover 111, longitudinal mover 112, clamping table body 113, sliding block 114, pressing cylinder 115, lifting cylinder 116, mounting plate 117, support spring 118, alignment plate 119, alignment plate body 120, adjusting screw 121, grinding structure 122, grinding wheel 123, grinding motor 124, grinding cylinder 125, return spring 126, lead screw 127, slider 128, drive motor 129. Detailed implementation manners

[0031] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, in the description of the present invention, the meaning of "plurality" is two or more unless otherwise specifically defined.

[0033] First embodiment:

[0034] Please refer to Figures 1 to 4, the present invention provides a welding device for aluminum alloy door and window metal aluminum plates, including a base 101 and a support frame 102. The support frame 102 is fixedly connected to the base 101 and is located on the top of the base 101. It also includes a welding mover 103, a welder 104, a first clamping table 105, a first rotating plate 106, a lifter 107, a second clamping table 108, a second rotating plate 109 and a second mover 110. The second mover 110 is slidably arranged on the support frame 102. The second clamping table 108 is arranged on the second mover 110. The second rotating plate 109 is rotatably arranged on the second clamping table 108. The lifter 107 is slidably arranged on one side of the support frame 102. The first rotating plate 106 is rotatably arranged on the lifter 107. The first clamping table 105 is arranged on the first rotating plate 106. The welding mover 103 is arranged on one side of the support frame 102. The welder 104 is connected to the welding mover 103.

[0035] In this embodiment, the base 101 serves as the basic support structure of the entire device. The base 101 not only provides a stable installation platform but also bears the function of dispersing and bearing the weight of the device, ensuring the stability of the device during the welding process.

[0036] The support frame 102 is fixedly connected to the base 101 and is located on the top of the base 101. The support frame 102 is the main frame structure of the device, used to support and fix other components, such as the welding mover 103, the lifter 107, etc., to ensure the coordinated operation of each component.

[0037] The welding mover 103 is installed on one side of the support frame 102. The welding mover 103 can move along a predetermined path on the track, driving the welder 104 to reach the specified welding position. By precisely controlling the movement trajectory of the welding mover 103, precise welding of complex structural parts can be achieved.

[0038] The welder 104 is connected to the welding mover 103. The welder 104 is a key component for performing the actual welding operation. It can be configured with corresponding welding heads according to different welding requirements, such as TIG or MIG welding torches, to adapt to different types of aluminum alloy materials and welding processes.

[0039] When in use, place the door and window on the support frame 102, fix both sides by the first clamping table 105 and the second clamping table 108, and then perform welding through the moving welder 104. After welding is completed, start the lifter 107 to drive the first clamping table 105 to move upward, and at the same time, the second mover 110 drives the second clamping table 108 to slide, so as to drive the door frame to tilt. Until the second clamping table 108 moves past the position where the lifter 107 is located, the lifter 107 descends to complete the flipping of the door and window frame. The first rotating plate 106 and the second rotating plate 109 allow the rotation of the door and window frame.

[0040] Through the coordinated action of the above components, this welding equipment can effectively complete the welding task of the metal aluminum plate of the aluminum alloy door and window. It can not only achieve precise positioning and fixing of the workpiece, but also flexibly adjust the position of the welder 104 according to the welding requirements to ensure the welding quality and efficiency.

[0041] The welding mover includes a transverse mover 111 and a longitudinal mover 112. The transverse mover 111 is arranged on the support frame 102, the longitudinal mover 112 is slidably arranged on the transverse mover 111, and the welder 104 is arranged on the longitudinal mover 112.

[0042] The transverse mover 111 is fixedly installed on the support frame 102. As the basis of the welding mover, it provides the moving ability of the welder 104 in the horizontal direction. Driven by a motor or manually adjusted, the transverse mover 111 can smoothly slide along the track on the support frame 102 to ensure that the welder 104 can accurately reach the horizontal coordinates of the required welding position. The longitudinal mover 112 is slidably arranged on the transverse mover 111, providing the moving ability of the welder 104 in the vertical direction. In this way, through the combined use of the transverse mover 111 and the longitudinal mover 112, the welder 104 can move freely in three-dimensional space and accurately align the parts to be welded. The longitudinal mover 112 can also be adjusted electrically or manually to adapt to welding requirements at different heights.

[0043] The welder 104 is installed on the longitudinal mover 112, changing its height as the longitudinal mover 112 moves up and down, and also changing its position as the transverse mover 111 moves left and right.

[0044] The first clamping table 105 includes a clamping table body 113, a sliding block 114 and a pressing cylinder 115. The sliding block 114 is slidably arranged on the clamping table body 113, and the output end of the pressing cylinder 115 is connected to the sliding block 114.

[0045] The clamping table body 113 serves as the basic structure of the first clamping table 105. The clamping table body 113 provides a platform for fixing and supporting the sliding block 114. It is usually made of high-strength materials to ensure stability under large pressures. The sliding block 114 is slidably arranged on the clamping table body 113 and can move back and forth along the track of the clamping table body 113 for adjusting the clamping position. The design of the sliding block 114 usually includes anti-slip patterns or grooves to enhance the gripping force on the aluminum alloy plate.

[0046] The output end of the pressing cylinder 115 is connected to the sliding block 114. Through pneumatic drive, the sliding block 114 can be pushed towards the aluminum alloy plate to achieve firm clamping. The stroke and force of the pressing cylinder 115 can be adjusted according to actual needs to ensure sufficient clamping force on plates of different thicknesses and shapes.

[0047] The lifter 107 includes a lifting cylinder 116, a mounting plate 117, and a support spring 118. The lifting cylinder 116 is fixed on one side of the support frame 102. The mounting plate 117 is connected to the output end of the lifting cylinder 116. The support spring 118 is arranged between the lifting cylinder 116 and the mounting plate 117. The first rotating plate 106 is rotatably arranged on the mounting plate 117.

[0048] The lifting cylinder 116 is fixedly installed on one side of the support frame 102 and is the core component for realizing the lifting function. Through pneumatic drive, the lifting cylinder 116 can drive the mounting plate 117 to move up and down, thereby adjusting the height of the first rotating plate 106.

[0049] The mounting plate 117 is connected to the output end of the lifting cylinder 116 and moves up and down with the expansion and contraction of the lifting cylinder 116. The first rotating plate 106 is installed on the mounting plate 117. Through the drive of the lifting cylinder 116, the first rotating plate 106 can be positioned at different heights.

[0050] The support spring 118 is arranged between the lifting cylinder 116 and the mounting plate 117 and plays a role in buffering and shock absorption. When the lifting cylinder 116 drives the mounting plate 117 to move up and down, the support spring 118 can absorb part of the impact force, reduce vibration, and ensure the smooth movement of the first rotating plate 106.

[0051] The first rotating plate 106 is rotatably arranged on the mounting plate 117 and can rotate around a central axis for adjusting the angle of the aluminum alloy plate. By rotating the first rotating plate 106, the plate can be adjusted to the most suitable angle for welding, improving the welding quality and efficiency.

[0052] The aluminum alloy door and window metal aluminum plate welding equipment further includes an alignment plate 119, which includes two alignment plate bodies 120 and an adjustment screw 121. The two alignment plate bodies 120 are slidably arranged on both sides of the support frame 102. The adjustment screw 121 has two sections of opposite threads, and the adjustment screw 121 is threadedly connected to the two alignment plate bodies 120.

[0053] The alignment plate 119 is composed of two alignment plate bodies 120, which are respectively slidably arranged on both sides of the support frame 102. The alignment plate bodies 120 are usually made of high-strength materials to ensure stability under large pressures.

[0054] The adjustment screw 121 is a key component connecting the two alignment plate bodies 120. The adjustment screw 121 has two sections of opposite threads, which means that when the adjustment screw 121 is rotated, the two alignment plate bodies 120 will move in opposite directions. In this way, the distance between the two alignment plate bodies 120 can be finely adjusted to ensure the precise alignment of the aluminum alloy plates before welding.

[0055] The alignment plate 119 further includes a grinding structure 122, which is arranged on the alignment plate body 120 and is used for grinding the weld seam after welding.

[0056] In order to grind the weld seam after welding, a set of grinding structure 122 is also equipped on the alignment plate 119 to improve the surface quality and aesthetics of the weld seam.

[0057] The grinding structure 122 includes a grinding wheel 123, a grinding motor 124 and a grinding cylinder 125. The grinding cylinder 125 is fixed on the alignment plate body 120. The grinding motor 124 is arranged on the output end of the grinding cylinder 125, and the grinding wheel 123 is connected to the output end of the grinding motor 124.

[0058] The grinding wheel 123 is the component directly in contact with the weld seam and is used to remove the uneven parts and oxide layers on the surface of the weld seam. The grinding wheel 123 is usually made of wear-resistant materials to ensure stable performance after long-term use.

[0059] The grinding motor 124 is the power source for driving the grinding wheel 123 to rotate. The grinding motor 124 is installed on the output end of the grinding cylinder 125 and drives the grinding wheel 123 to work through high-speed rotation. The power and rotation speed of the grinding motor 124 can be adjusted according to actual needs to adapt to weld seams of different thicknesses and materials.

[0060] The grinding cylinder 125 is fixed on the alignment plate body 120 and is used to control the up and down movement of the grinding motor 124. Driven by air pressure, the grinding cylinder 125 can accurately position the grinding motor 124 and the grinding wheel 123 on the weld seam to ensure the stability and consistency of the grinding process.

[0061] The grinding structure 122 further includes a return spring 126, and the return spring 126 is arranged between the grinding cylinder 125 and the grinding motor 124.

[0062] The return spring 126 is arranged between the grinding cylinder 125 and the grinding motor 124, playing a role of buffering and resetting. When the grinding cylinder 125 drives the grinding motor 124 to move downward, the return spring 126 can absorb part of the impact force, reduce vibration, and ensure the smoothness of the grinding process. At the same time, after grinding is completed, the return spring 126 can help the grinding motor 124 quickly return to the initial position, improving work efficiency.

[0063] The second mover 110 includes a lead screw 127, a slider 128, and a drive motor 129. The lead screw 127 is rotatably arranged on one side of the support frame 102. The slider 128 is threadedly connected to the lead screw 127 and is slidably connected to the support frame 102. The output end of the drive motor 129 is connected to the lead screw 127.

[0064] The lead screw 127 is rotatably arranged on one side of the support frame 102 and is the main transmission component of the second mover 110. By rotating the lead screw 127, the precise movement of the slider 128 can be achieved.

[0065] The slider 128 is threadedly connected to the lead screw 127 and is slidably connected to the support frame 102. The movement range and precision of the slider 128 directly affect the position adjustment of the second clamping table 108, thereby affecting the welding quality.

[0066] The output end of the drive motor 129 is connected to the lead screw 127. By rotating the motor, the lead screw 127 is driven to rotate, and then the slider 128 is driven to move along the track of the support frame 102. The drive motor 129 usually has the characteristics of high precision and high torque to ensure the smooth movement and precise positioning of the slider 128.

[0067] Through the above design, the aluminum alloy door and window metal aluminum plate welding equipment can not only achieve precise welding of aluminum alloy plates, but also efficiently grind the weld seam after welding to ensure the high quality and aesthetics of the final product. At the same time, the various components of the equipment work together, improving the overall reliability and operation convenience.

[0068] Second Embodiment:

[0069] Please refer to Figure 5, the present invention also provides a welding method for metal aluminum plates of aluminum alloy doors and windows, including:

[0070] S201 Place both sides of the aluminum alloy door and window frame on the first clamping table 105 and the second clamping table 108 respectively for fixation;

[0071] Place both sides of the aluminum alloy door and window frame on the first clamping table 105 and the second clamping table 108 respectively. The first clamping table 105 and the second clamping table 108 are located on both sides of the support frame 102 respectively, ensuring that the aluminum alloy door and window frame can be stably fixed on the equipment. Use the clamping devices (such as the pressing cylinder 115 and the sliding block 114) on the first clamping table 105 and the second clamping table 108 to firmly fix both sides of the aluminum alloy door and window frame. Ensure that during the welding process, the aluminum alloy door and window frame will not displace or loosen, thus guaranteeing the welding quality.

[0072] S202 Start the welding mover 103 to drive the welder 104 to the position of the weld for welding;

[0073] Start the welding mover 103 to make the welder 104 move along a predetermined path to the initial position of the weld. The welding mover 103 can move precisely in the horizontal and vertical directions to ensure that the welder 104 can accurately align with the weld. Start the welder 104 and perform welding according to the preset welding parameters (such as current, voltage, welding speed, etc.). During the welding process, the welder 104 will move along the weld to complete the primary welding.

[0074] S203 After welding is completed, lift the first clamping table 105 through the lifter 107, and at the same time, the second mover 110 drives the second clamping table 108 to move, causing the aluminum alloy door and window frame to tilt and turn over;

[0075] After welding is completed, start the lifter 107 to lift the first clamping table 105. The lifter 107 is driven by a cylinder and can smoothly lift the first clamping table 105 to a certain height. At the same time, start the second mover 110 to make the second clamping table 108 move along the track of the support frame 102. The second mover 110 can precisely control the moving distance and speed of the second clamping table 108 through the cooperation of the lead screw 127 and the slider 128. As the first clamping table 105 is lifted and the second clamping table 108 moves, the aluminum alloy door and window frame will gradually tilt and turn over. This process needs to be precisely controlled to ensure that the aluminum alloy door and window frame will not be damaged during the turning process.

[0076] S204 After the second clamping table 108 moves to the other end of the support frame 102, the lifter 107 moves downward to make the aluminum alloy door and window frame flip 180°;

[0077] When the second clamping table 108 moves to the other end of the support frame 102, the aluminum alloy door and window frame has tilted to a position close to 180°. Start the lifter 107 and lower it to completely flip the aluminum alloy door and window frame by 180°. At this time, the other side of the aluminum alloy door and window frame faces upward, ready for the second welding.

[0078] S205 Start the welding mover 103 again to drive the welder 104 to the position of the weld for welding.

[0079] Start the welding mover 103 again to move the welder 104 along a predetermined path to the position of a new weld. Ensure that the welder 104 can accurately align with the part to be welded. Start the welder 104 and perform the second welding according to the preset welding parameters. During the welding process, the welder 104 will move along the weld to complete the welding of the other side of the aluminum alloy door and window frame.

[0080] Through the above method, not only can the welding efficiency of the aluminum alloy sheet of the aluminum alloy door and window be improved, but also the welding quality can be ensured and the service life of the product can be extended. The entire welding process has a high degree of automation, is easy to operate, and is suitable for large-scale production and occasions with high-precision requirements.

[0081] What is disclosed above is only a preferred embodiment of the present invention. Of course, the scope of rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. An aluminum alloy door and window metal aluminum plate welding device, comprising a base and a support frame. The support frame is fixedly connected to the base and is located at the top of the base. It is characterized in that, it further includes a welding mover, a welder, a first clamping table, a first rotating plate, a lifter, a second clamping table, a second rotating plate and a second mover. The second mover is slidably arranged on the support frame. The second clamping table is arranged on the second mover. The second rotating plate is rotatably arranged on the second clamping table. The lifter is slidably arranged on one side of the support frame. The first rotating plate is rotatably arranged on the lifter. The first clamping table is arranged on the first rotating plate. The welding mover is arranged on one side of the support frame. The welder is connected to the welding mover. The second mover includes a lead screw, a slider and a driving motor. The lead screw is rotatably arranged on one side of the support frame. The slider is threadedly connected to the lead screw and is slidably connected to the support frame. The output end of the driving motor is connected to the lead screw.

2. The aluminum alloy door and window metal aluminum plate welding device according to claim 1, characterized in that, the welding mover includes a transverse mover and a longitudinal mover. The transverse mover is arranged on the support frame. The longitudinal mover is slidably arranged on the transverse mover. The welder is arranged on the longitudinal mover.

3. The aluminum alloy door and window metal aluminum plate welding device according to claim 2, characterized in that, the first clamping table includes a clamping table body, a sliding block and a pressing cylinder. The sliding block is slidably arranged on the clamping table body. The output end of the pressing cylinder is connected to the sliding block.

4. The aluminum alloy door and window metal aluminum plate welding device according to claim 3, characterized in that, the lifter includes a lifting cylinder, a mounting plate and a support spring. The lifting cylinder is fixed on one side of the support frame. The mounting plate is connected to the output end of the lifting cylinder. The support spring is arranged between the lifting cylinder and the mounting plate. The first rotating plate is rotatably arranged on the mounting plate.

5. The aluminum alloy door and window metal aluminum plate welding device according to claim 4, characterized in that, the aluminum alloy door and window metal aluminum plate welding device further includes an alignment plate. The alignment plate includes two alignment plate bodies and an adjustment screw. The two alignment plate bodies are slidably arranged on both sides of the support frame. The adjustment screw has two opposite threads. The adjustment screw is threadedly connected to the two alignment plate bodies.

6. The aluminum alloy door and window metal aluminum plate welding device according to claim 5, characterized in that, the alignment plate further includes a grinding structure. The grinding structure is arranged on the alignment plate body and is used for grinding the weld seam after welding.

7. The aluminum alloy door and window metal aluminum plate welding device according to claim 6, characterized in that, the grinding structure includes a grinding wheel, a grinding motor and a grinding cylinder. The grinding cylinder is fixed on the alignment plate body. The grinding motor is arranged on the output end of the grinding cylinder. The grinding wheel is connected to the output end of the grinding motor.

8. A welding device for aluminum alloy door and window metal aluminum plates according to claim 7, characterized in that the grinding structure further includes a return spring, and the return spring is arranged between the grinding cylinder and the grinding motor.

9. A welding method for aluminum alloy door and window metal aluminum plates, using a welding device for aluminum alloy door and window metal aluminum plates according to any one of claims 1 to 8, Characterized in that it includes: respectively placing two sides of the aluminum alloy door and window frame on the first clamping table and the second clamping table for fixation; starting the welding mover to drive the welder to the position where the weld is located for welding; after welding is completed, the first clamping table is lifted by the lifter, and at the same time the second mover drives the second clamping table to move, so that the aluminum alloy door and window frame tilts and flips; after the second clamping table moves to the other end of the support frame, the lifter moves downward so that the aluminum alloy door and window frame flips 180°; start the welding mover again to drive the welder to the position where the weld is located for welding.

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