An apparatus for tack welding aluminum profiles

Abstract

This application discloses an aluminum profile positioning and welding equipment, belonging to the field of aluminum profile processing technology. It includes a frame with a mounting platform on top; two aluminum profile bodies; and a moving welding mechanism for welding the two aluminum profile bodies. This application achieves multi-level progressive constraint on the aluminum profiles through a four-level positioning mechanism linkage design, forming a comprehensive positioning system from three dimensions: X-axis (axial direction), Y-axis (horizontal and vertical directions), and Z-axis (vertical direction). The first-level positioning completes the initial axial alignment of the aluminum profiles; the second-level positioning achieves the initial clamping in the Y-axis direction; the third-level positioning continuously provides constraint force in the Y-axis direction during welding, compensating for the failure gap caused by the movement of the welding torch in the second-level positioning; and the fourth-level positioning completes the Z-axis clamping from the top, while simultaneously cooperating with adsorption positioning to further enhance the anti-displacement capability in the X-axis direction, significantly reducing the impact of cumulative errors and thermal deformation, and lowering the welding distortion rate.

Description

Technical Field

[0001] This application relates to the field of aluminum profile processing technology, and in particular to an aluminum profile positioning and welding equipment. Background Technology

[0002] Aluminum profiles are aluminum materials that are produced by hot melting and extrusion of aluminum rods to obtain different cross-sectional shapes.

[0003] Existing aluminum profile positioning and welding equipment generally suffers from insufficient positioning accuracy: On the one hand, aluminum profiles themselves have low rigidity and fast heat conduction, and are prone to deformation and displacement due to heat input during the welding process. Traditional single-stage or two-stage positioning methods are difficult to offset the cumulative error, resulting in misalignment of the butt joint and poor weld formation quality after welding.

[0004] On the other hand, existing multi-level positioning systems mostly adopt a "parallel superposition" design approach, where each positioning mechanism is independent and has no linkage relationship, making it impossible to form progressive constraints. This results in a high welding distortion rate, making it difficult to meet the processing requirements of high-precision aluminum profile components.

[0005] Based on this, this application designs an aluminum profile positioning and welding device to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, this application provides the following technical solution: An aluminum profile positioning and welding device, comprising: The rack has a mounting platform on top; Two aluminum profile bodies; A mobile welding mechanism is used to weld two aluminum profile bodies. Two sets of primary positioning mechanisms are arranged symmetrically in the center. The primary positioning mechanisms are fixed on the mounting platform and are used for the initial positioning of the two aluminum profile bodies. The secondary positioning mechanism is used to reposition the two aluminum profile bodies. Two sets of symmetrically arranged three-level positioning mechanisms are used to axially connect the two aluminum profile bodies after they pass through the two sets of three-level positioning mechanisms respectively. The three-level positioning mechanisms are used to perform a third positioning of the two aluminum profile bodies. The fourth-level positioning mechanism is located directly above the two aluminum profile bodies and is used to perform the fourth positioning of the two aluminum profile bodies. Among them, the positioning mechanisms at all levels adopt linkage control to achieve multi-level progressive positioning of the aluminum profile body; Two crossbeams are fixedly installed between two sets of three-level positioning mechanisms, and a four-level positioning mechanism is fixedly installed between the two crossbeams.

[0007] Preferably, the mobile welding mechanism includes: The base is fixedly mounted on the frame and embedded in the mounting platform; A movable base, which is slidably mounted on the base; The movable cylinder is fixedly mounted on the base, and the bottom of the movable base is fixedly mounted on the telescopic end of the movable cylinder. A welding oscillator is fixedly mounted on a movable base, and a welding torch is mounted on the welding oscillator.

[0008] Preferably, the primary positioning mechanism includes: Two backing plates are provided, and welding grooves are located below the welding parts of the two aluminum profile bodies. Two side baffles are fixedly mounted on two pads, and the two side baffles are arranged symmetrically in the center. One side contact surface is provided on the inner side of the side baffle. Two axial baffles are vertically fixed on two pads respectively, and the two axial baffles are arranged in a centrally symmetrical manner. An axial contact surface is provided on the inner side of the axial baffle, and the contact surface between the axial contact surface and the two pads is located on the same vertical plane.

[0009] Preferably, the secondary positioning mechanism includes: The lower toothed plate has one end fixedly mounted on the movable base. Gears mesh with the lower gear plate; Upper gear plate, which meshes with the gear; Two clamping blocks, each with a connecting rod fixedly installed at its bottom, and the two connecting rods are fixedly installed on both sides of the upper toothed plate. Two clamping blocks of type 2, each with a connecting rod of type 2 fixedly installed at the bottom of the two clamping blocks of type 2, and the two connecting rods of type 2 fixedly installed on both sides of the lower toothed plate respectively; The lower guide rail and the lower toothed plate are slidably mounted on the lower guide rail. A support rod is fixedly mounted on the end of the lower guide rail away from the lower toothed plate, and the top end of the support rod is fixedly mounted on the frame. Two stabilizers are provided, with a gear rotating between them. Both stabilizers are fixedly mounted at the bottom of the lower guide rail. The upper guide rail and the upper toothed plate are slidably mounted on the upper guide rail, which is fixedly mounted on the frame.

[0010] Preferably, the three-level positioning mechanism includes: The outer frame, with its inner bottom surface used to support the aluminum profile body to be welded; The drive frame is slidably mounted on the outer frame. Two sets of overpressure components are fixedly installed at the bottom of the drive frame; Two pressure rods are fixedly installed at the bottom of the two sets of overpressure components, and an upper inclined surface is provided at the bottom end of the pressure rods; Two locking blocks are provided. The aluminum profile body is positioned between the two locking blocks during positioning. The locking blocks have a lower inclined surface. A slider is fixed to the bottom of the locking block. The bottom of the slider is slidably set at the bottom of the inner wall of the outer frame. A guide groove for the slider to pass through is provided on the bottom inner side of the outer frame. The positioning seat has two fixed return springs on both sides, and the ends of the two return springs are fixedly connected to the two sliders respectively.

[0011] Preferably, the overpressure assembly includes a sliding sleeve and an overpressure spring. The overpressure spring is located inside the sliding sleeve, and the stiffness coefficient k1 of the overpressure spring is much larger than the stiffness coefficient k2 of the return spring. The top of the pressure rod is slidably disposed inside the sliding sleeve. The top of the sliding sleeve is fixedly connected to the bottom of the drive frame. The top end of the overpressure spring is fixedly connected to the bottom of the drive frame, and the bottom end of the overpressure spring is fixedly connected to the top of the pressure rod.

[0012] Preferably, the four-level positioning mechanism includes: Two clamping cylinders are fixedly installed between two crossbeams; Two pressure frames are fixedly mounted on the telescopic ends of two pressure cylinders, and the pressure cylinders drive the two pressure frames to move. Two pressure plates are fixedly installed at the bottom of two pressure frames; The drive rod is fixedly connected to two pressure frames on one side, and its two ends are fixedly connected to two drive frames respectively.

[0013] Preferably, the fourth-level positioning mechanism further includes: A vacuum pump is fixedly installed between two crossbeams. An adsorption bucket is connected to the suction end of the vacuum pump, and the adsorption bucket is located directly above the welding point of the two aluminum profile bodies. Multiple adsorption positioning components and branch pipes are provided. The branch pipes are fixedly installed on the pressure plate. Each branch pipe is connected to at least two adsorption positioning components. When the pressure plate is pressed down to the top surface of the aluminum profile body, the adsorption positioning components contact the top surface of the aluminum profile body. A flexible hose is also connected between the branch pipe and the adsorption hopper.

[0014] Preferably, the adsorption positioning component includes: The suction cup is located at the bottom of the plane where the pressure plate is located; The catheter is fixed and connected to the suction cup; The connecting tube and the conduit are slidably disposed inside the connecting tube, and the connecting tube is connected to the branch tube; The clamping spring has its top fixedly connected to the connecting tube and its bottom fixedly connected to the guide tube.

[0015] Preferably, the frame is also equipped with a welding fume dust removal filter cartridge, which is connected to the vacuum pump via a pipeline.

[0016] In summary, this application has the following beneficial effects: 1. This application achieves multi-level progressive constraint on aluminum profiles through the linkage design of a four-level positioning mechanism. It forms a comprehensive positioning system from three dimensions: X-axis (axial direction), Y-axis (horizontal and vertical direction), and Z-axis (vertical direction). The action sequence and constraint objectives of each Y-axis positioning link are clearly defined. The first-level positioning only completes the axial reference unification of the aluminum profile, without directly forcing the two aluminum profile end faces to be completely aligned, and reserves an adjustment gap in the Y-axis direction to avoid axial deviation caused by end face defects. The second-level positioning provides the initial clamping force in the Y-axis at the initial stage of welding to fix the initial welding position of the aluminum profile. The third-level positioning continuously provides Y-axis constraint force during the welding process to compensate for the failure gap of the second-level positioning as the welding gun moves, and at the same time actively pushes the two aluminum profile end faces to fit together, correcting the reserved gap of the first-level positioning. The fourth-level positioning completes the Z-axis clamping from the top, and at the same time, in conjunction with adsorption positioning, further enhances the anti-displacement capability in the X-axis direction, which greatly reduces the impact of cumulative error and thermal deformation, and reduces the welding distortion rate. 2. Furthermore, the operating efficiency of the equipment is further improved through linkage control logic: the moving seat of the moving welding mechanism can directly drive the toothed plate transmission of the secondary positioning, and the downward movement of the pressure frame of the fourth positioning simultaneously drives the drive frame of the third positioning. There is no need to configure a separate power source for each positioning level, which not only simplifies the equipment structure and reduces energy consumption, but also ensures the synchronization of each positioning action and avoids positioning deviation caused by the asynchrony of multiple power sources. 3. Finally, the integrated welding fume treatment function realizes the integration of positioning and dust removal: the four-stage positioning adsorption bucket is directly aligned with the welding point, and with the negative pressure adsorption effect of the adsorption positioning component, welding fumes can be accurately collected at the moment of welding. The collected welding fumes are filtered by the welding fume dust removal filter cartridge before being discharged, which not only improves the working environment, but also avoids welding slag splashing onto the positioning contact surface and affecting the positioning accuracy. At the same time, the static friction generated by adsorption positioning further improves the axial positioning stability of the aluminum profile. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application.

[0018] Figure 2 This is a schematic diagram of the overall structure of this application from another perspective.

[0019] Figure 3 This is a schematic diagram of the moving welding mechanism in this application.

[0020] Figure 4 This is a schematic diagram of the primary positioning mechanism in this application.

[0021] Figure 5 This is a schematic diagram of the secondary positioning mechanism in this application.

[0022] Figure 6 This is a schematic diagram of the three-level positioning mechanism in this application.

[0023] Figure 7 This is a structural schematic diagram of the overpressure assembly, pressure bar, and locking block in this application.

[0024] Figure 8 This is a schematic diagram of the four-level positioning mechanism in this application.

[0025] Figure 9 This is a schematic diagram of the adsorption positioning component in this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Moving welding mechanism; 21. Base; 22. Moving cylinder; 23. Moving seat; 24. Welding oscillator; 25. Welding torch; 3. Primary positioning mechanism; 31. Pad; 32. Side baffle; 33. Axial baffle; 34. Welding groove; 4. Aluminum profile body; 5. Secondary positioning mechanism; 51. Lower toothed plate; 52. Lower guide rail; 53. Support rod; 54. Stabilizer; 55. Gear; 56. Upper guide rail; 57. Upper toothed plate; 58. Connecting rod No. 1; 59. Clamping block No. 1; 510. Connecting rod No. 2; 511. Clamping block No. 2; 6. Tertiary positioning mechanism; 61. 62. Outer frame; 63. Drive frame; 64. Overpressure assembly; 65. Sliding sleeve; 66. Overpressure spring; 67. Pressure rod; 68. Upper inclined surface; 69. Locking block; 60. Lower inclined surface; 61. Slider; 62. Positioning seat; 63. Return spring; 7. Guide groove; 84. Crossbeam; 85. Four-stage positioning mechanism; 86. Pressing cylinder; 87. Pressure frame; 88. Pressure plate; 89. Drive rod; 80. Vacuum pump; 81. Adsorption bucket; 82. Hose; 83. Branch pipe; 84. Adsorption positioning assembly; 89. Suction cup; 89. Guide tube; 89. Connecting pipe; 89. Clamping spring; 9. Welding fume dust removal filter cartridge. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Reference Figures 1-9 This application provides an aluminum profile positioning welding device, comprising: The frame 1 has a mounting platform on its top for mounting the relevant structures of the welding equipment. The frame 1 also has four legs at its bottom for stable support. Two aluminum profile bodies 4 are welded together after being positioned. The figure shows a conventional axial welding. The movable welding mechanism 2 is used to weld two aluminum profile bodies 4 together. Usually, before welding, the welding end faces of the two aluminum profile bodies 4 need to be deoxidized to remove the dense aluminum oxide film on the outer wall of the aluminum profile. Two sets of primary positioning mechanisms 3 are arranged symmetrically in the center. The primary positioning mechanisms 3 are fixedly installed on the mounting platform. The primary positioning mechanisms 3 are used to perform initial positioning of the two aluminum profile bodies 4, so as to facilitate subsequent positioning and welding work. The secondary positioning mechanism 5 is used to reposition the two aluminum profile bodies 4, further improving the accuracy of positioning welding. Two sets of symmetrically arranged three-level positioning mechanisms 6 are used to axially connect the two aluminum profile bodies 4 after passing through the two sets of three-level positioning mechanisms 6 respectively. The three-level positioning mechanism 6 is used to perform a third positioning on the two aluminum profile bodies 4 to ensure the stability of the aluminum profile bodies 4 during the welding process. The fourth-level positioning mechanism 8 is located directly above the two aluminum profile bodies 4. The fourth-level positioning mechanism 8 is used to perform the fourth positioning of the two aluminum profile bodies 4, which effectively improves the stability of the aluminum profile bodies 4 during the welding process. Among them, the positioning mechanisms at all levels adopt linkage control to achieve multi-level progressive positioning of the aluminum profile body 4; Two crossbeams 7 are fixedly installed between two sets of three-level positioning mechanisms 6, and a four-level positioning mechanism 8 is fixedly installed between the two crossbeams 7. It needs further explanation that a spatial rectangular coordinate system is established with the length direction of the aluminum profile body 4 as the X-axis, the direction perpendicular to the horizontal direction of the aluminum profile body 4 as the Y-axis, and the direction perpendicular to the vertical direction of the aluminum profile body 4 as the Z-axis. For ease of understanding, the X-axis, Y-axis, and Z-axis will correspond to different positioning directions in the subsequent instructions: the two sets of primary positioning mechanisms 3 are used for reference positioning of the two aluminum profile bodies 4 in the X-axis direction. Only the ends of the two aluminum profile bodies 4 are pressed against the axial contact surface of the axial baffle 33 to unify the axial reference. The mating end faces of the two aluminum profile bodies 4 are not forced to be completely fitted in the primary positioning stage, and a mating adjustment gap is reserved in the Y-axis direction, so that it can be used for different... Aluminum profiles of the same diameter; the secondary positioning mechanism 5 is used for the initial clamping of the two aluminum profile bodies 4 in the Y-axis direction, fixing the position of the aluminum profiles in the initial stage of welding; two sets of tertiary positioning mechanisms 6 are used for secondary positioning of the two aluminum profile bodies 4 in the Y-axis direction, providing continuous clamping force and cooperating with the secondary positioning mechanism 5 to push the mating end faces of the two aluminum profile bodies 4 to fit together, eliminating the gap reserved by the primary positioning and ensuring the mating accuracy; the quaternary positioning mechanism 8 is used for positioning of the two aluminum profile bodies 4 in the Z-axis direction, preventing the aluminum profiles from warping during welding by pressing down, and ensuring the stability of the mating of the two aluminum profile bodies 4 in subsequent welding processes through the progressive cooperation of multiple positioning.

[0029] Furthermore, the movable welding mechanism 2 includes: Base 21 is fixedly mounted on frame 1 and embedded in mounting platform; The movable seat 23 is slidably mounted on the base 21; It should be noted that there are two axially arranged slide rails on the base 21, and a slide groove corresponding to the slide rail is provided at the bottom of the movable seat 23. Through the cooperation of the slide rail and the slide groove, the movable shaft 23 can slide stably on the base 21. The movable cylinder 22 is fixedly mounted on the base 21, and the bottom of the movable seat 23 is fixedly mounted on the telescopic end of the movable cylinder 22. The telescopic end of the movable cylinder 22 controls the axial movement of the movable seat 23 on the base 21. Welding oscillator 24 is fixedly mounted on movable base 23. Welding torch 25 is mounted on welding oscillator 24. Welding oscillator 24 can adjust the vertical swing angle and swing amplitude of welding torch 25, and can be used for welding work on irregular planes. It should be noted that the welding oscillator 24 is a common structure in the prior art used to control the welding angle of the welding torch 25. In this solution, the YXAWO-05AE model oscillator can be used. Its mechanical structure includes a motor, encoder and worm gear, and adopts a dual closed-loop DC servo control mode for speed and position, which can be adapted to welding work under different conditions.

[0030] Furthermore, the primary positioning mechanism 3 includes: Two pads 31 are located below the welding parts of the two aluminum profile bodies 4; Two side baffles 32 are fixedly mounted on two pads 31 respectively, and the two side baffles 32 are arranged in a centrally symmetrical manner. A contact surface is provided on the inner side of the side baffles 32. Two axial baffles 33 are vertically fixed on two side baffles 32 respectively, and the two axial baffles 33 are centrally symmetrically arranged. An axial contact surface is provided on the inner side of the axial baffles 33. The axial contact surfaces on the two axial baffles 33 and the contact surfaces between the two pads 31 are located on the same vertical plane. It should be noted that the side contact surface and the axial contact surface are perpendicular to each other. The axial contact surface is used to axially position the end of the aluminum profile body 4. Before welding, one end of the aluminum profile body 4 is pressed against an axial contact surface and positioned by the corresponding side contact surface. Then, one end of the other aluminum profile body 4 is pressed against another axial contact surface and positioned by the corresponding side contact surface. This allows the two aluminum profile bodies 4 to be axially positioned to avoid misalignment during welding. At this time, the two aluminum profile bodies 4 are parallel and in most contact in the X-axis direction. Then, the two aluminum profile bodies 4 are fully butted by the subsequent Y-axis positioning. Through the action of the first-level positioning mechanism 3, compared with the conventional direct butt welding in the prior art, it can ensure that the welding part is always directly above the contact surface of the two pads 31. It can also be applied to butt welding of aluminum profiles of different sizes. Among them, the axial baffle 33 is only used to limit the axial reference position of the aluminum profile body 4. The mating end faces of the two aluminum profile bodies 4 are not forced to fit completely in the first positioning stage, and a mating adjustment gap is reserved in the Y-axis direction.

[0031] Furthermore, welding grooves 34 are provided on both pads 31. When the two pads 31 are in contact, the two welding grooves 34 combine to form a large weld groove. Two axial baffles 33 extend from the side baffles 32 to the top of the weld groove, and the axial contact surfaces of the two axial baffles 33 are located on the same vertical plane. In the initial state, the two aluminum profiles are placed on the mounting table through the first-level positioning mechanism 3, at which time the two aluminum profiles are partially in axial contact. When the Y-axis positioning is performed under the action of the second-level and third-level positioning mechanisms, the axial end faces of the two aluminum profile bodies 4 are aligned and in contact, and at this time the aluminum profiles are separated from the corresponding axial baffles 33. After the upper half of the joint of the two aluminum profile bodies 4 is welded, the welded aluminum profile is taken out and flipped over, so that the weld is aligned with the welding groove, and then the subsequent welding is carried out. At the same time, the welding groove can accommodate the residue attached to the weld during the welding process, preventing the weld from being lifted up, and thus not affecting the welding on the other side.

[0032] Furthermore, the secondary positioning mechanism 5 includes: The lower toothed plate 51 has one end fixedly mounted on the movable seat 23. When the movable seat 23 moves horizontally, it can drive the lower toothed plate 51 to move horizontally axially. Gear 55 meshes with lower gear plate 51. When lower gear plate 51 moves axially, it can drive gear 55 to rotate. The upper toothed plate 57 meshes with the gear 55, and when the gear 55 rotates, it can drive the upper toothed plate 57 to move axially. Two clamping blocks 59 are provided with a connecting rod 58 fixedly installed at the bottom of each clamping block 59. The two connecting rods 58 are fixedly installed on both sides of the upper toothed plate 57. The upper toothed plate 57 can drive the two connecting rods 58 and the two clamping blocks 59 to move. Two clamping blocks 511 are provided with two connecting rods 510 fixedly installed at the bottom of each clamping block 511. The two connecting rods 510 are fixedly installed on both sides of the lower toothed plate 51. The lower toothed plate 51 can drive the two connecting rods 510 and the two clamping blocks 511 to move. Among them, the two No. 1 clamping blocks 59 and the two No. 2 clamping blocks 511 are all "L" shaped. The No. 1 clamping blocks 59 and the No. 2 clamping blocks 511 are arranged in a mirror symmetrical manner. The top surface of the horizontal part of the four clamping blocks is in contact with the aluminum profile body 4 to be welded, and the bottom surface of the horizontal part of the four clamping blocks is in contact with the mounting table surface. It should be noted that: First, refer to Figure 2 , Figure 3 and Figure 5 The side closer to the mobile welding mechanism 2 is defined as the right side, and the side farther away from the mobile welding mechanism 2 is defined as the left side; Then, when the moving cylinder 22 pushes the moving seat 23 to move to the left, the moving seat 23 drives the lower gear plate 51 to move to the left, thereby causing the two No. 2 clamping blocks 511 to move to the left to position the aluminum profile body 4 from the right side. Meanwhile, the lower gear plate 51 drives the gear 55 to rotate clockwise, thereby causing the upper gear plate 57 to drive the two No. 1 clamping blocks 59 to move to the right to position the aluminum profile body 4 from the left side, thereby achieving the first positioning of the aluminum profile body 4 in the Y-axis direction; In addition, the mounting table is provided with strip-shaped through holes that cooperate with the movement of the No. 1 clamping blocks 59 and the No. 2 clamping blocks 511, and the tops of the No. 1 clamping blocks 59 and the No. 2 clamping blocks 511 extend through the strip-shaped through holes to above the mounting table, so as to cooperate in clamping the aluminum profile located on the mounting table.

[0033] Further, the secondary positioning mechanism 5 further comprises: a lower guide rail 52, wherein the lower gear plate 51 is slidably arranged on the lower guide rail 52, so that the lower gear plate 51 is more stable during axial movement; a support rod 53 is fixedly arranged at an end portion of the lower guide rail 52 away from the lower gear plate 51, and the top end of the support rod 53 is fixedly arranged on the frame 1; two stabilizing frames 54, wherein the gear 55 is rotatably arranged between the two stabilizing frames 54, and both the two stabilizing frames 54 are fixedly connected to the bottom of the lower guide rail 52; an upper guide rail 56, wherein the upper gear plate 57 is slidably arranged on the upper guide rail 56, so that the upper gear plate 57 is more stable during axial movement, and the upper guide rail 56 is fixed to the bottom of the mounting table; It should be noted that the connection between the stabilizing frame 54 and the lower guide rail 52 is located below the lower gear plate 51, so that the stabilizing frame 54 will not affect the movement of the lower gear plate 51, and the mounting position of the support rod 53 is away from the upper gear plate 57, so as to prevent the upper gear plate 57 from colliding with the support rod 53 during movement.

[0034] Further, the tertiary positioning mechanism 6 comprises: an outer frame 61 which is in a shape of a Chinese character hui, wherein the inner bottom surface of the outer frame 61 is used for supporting the aluminum profile body 4 to be welded; It should be noted that the inner bottom surface of the outer frame 61 and the top surface of the backing plate 31 are located on the same horizontal plane, so that the aluminum profile always remains stable during the welding process; a driving frame 62, wherein the driving frame 62 is vertically slidably arranged on the outer frame 61, and the driving frame 62 can move stably to ensure the transmission effect; two sets of overpressure assemblies 63, wherein both the two sets of overpressure assemblies 63 are fixedly arranged at the bottom of the driving frame 62; two pressure rods 64, wherein the two pressure rods 64 are respectively and fixedly arranged at the bottoms of the two sets of overpressure assemblies 63, and an upper inclined surface 64a is provided at the bottom end of the pressure rod 64; Two locking blocks 65, the aluminum profile body 4 is positioned between the two locking blocks 65 during positioning, a lower inclined surface 65a is provided on the locking block 65, and the cross section of the locking block 65 is an approximately right-angled triangle, with its lower inclined surface 65a located at the hypotenuse of the right-angled triangle. It should be noted that the upper inclined surface 64a and the lower inclined surface 65a have the same slope. When the pressure rod 64 moves downward, the upper inclined surface 64a abuts against the lower inclined surface 65a, which causes the locking block 65 to move horizontally. The two locking blocks 65 perform secondary positioning of the aluminum profile body 4 in the Y-axis direction from both sides, further improving the stability of the positioning welding. Meanwhile, when the welding torch moves to the initial welding position, the four clamping blocks clamp and fix the aluminum profile to ensure that the initial welding position of the aluminum profile is stable. During the welding process, the position of the welding torch 25 will be changed by moving the cylinder 22, which will in turn change the position of the lower tooth plate 51. At this time, the four clamping blocks will lose their positioning of the aluminum profile body 4. At this time, the two locking blocks 65 ensure that the position of the aluminum profile body 4 will not shift during the welding process. In addition to providing constraint force in the Y-axis direction, the secondary positioning mechanism 5 and the tertiary positioning mechanism 6 are also used to push the mating end faces of the two aluminum profile bodies 4 to fit together in the Y-axis direction, eliminating the mating gap reserved by the primary positioning.

[0035] Furthermore, the three-level positioning mechanism 6 also includes: The slider 66 is fixed to the bottom of the locking block 65. The bottom of the slider 66 is slidably set at the bottom of the inner wall of the outer frame 61. A guide groove 69 is provided on the bottom inner side of the outer frame 61 for the slider 66 to pass through, which improves the stability of the slider 66 and the locking block 65 during movement. The positioning seat 67 has two fixed reset springs 68 on both sides. The ends of the two reset springs 68 are fixedly connected to the two sliders 66 respectively. The reset springs 68 are used to reset the sliders 66 and the locking block 65.

[0036] Furthermore, the overpressure assembly 63 includes a sliding sleeve 631 and an overpressure spring 632. The overpressure spring 632 is located inside the sliding sleeve 631. The stiffness coefficient k1 of the overpressure spring 632 is much larger than the stiffness coefficient k2 of the return spring 68. The top of the pressure rod 64 is slidably disposed inside the sliding sleeve 631. The top of the sliding sleeve 631 is fixedly connected to the bottom of the drive frame 62. The top end of the overpressure spring 632 is fixedly connected to the bottom of the drive frame 62, and the bottom end of the overpressure spring 632 is fixedly connected to the top of the pressure rod 64. It should be noted that the ratio between k1 and k2 is approximately 5:1. After the two locking blocks 65 position and clamp the aluminum profile body 4, when the drive frame 62 continues to move downward, the overpressure spring 632 will be compressed, which will not easily damage the clamping part of the aluminum profile body 4.

[0037] Furthermore, the fourth-level positioning mechanism 8 includes: Two clamping cylinders 81 are fixedly installed between two crossbeams 7. The two clamping cylinders 81 are controlled by the same controller, thereby controlling the telescopic ends of the two clamping cylinders 81 to move precisely and synchronously. Two pressure frames 82 are fixedly installed at the telescopic ends of two pressure cylinders 81, and the two pressure frames 82 are moved by the pressure cylinders 81. Two pressure plates 83 are fixedly installed at the bottom of two pressure frames 82. When the pressure plates 83 move downward, they can contact the top of the aluminum profile body 4, thereby positioning the aluminum profile body 4 in the Z-axis direction. The drive rod 84 is fixedly connected to two pressure frames 82 on one side and fixedly connected to two drive frames 62 on both ends. By moving the drive rod 84 in the vertical direction, the two drive frames 62 are moved in the vertical direction, so that the three-stage positioning mechanism 6 can achieve positioning without additional power. Vacuum pump 85, usually a dry screw vacuum pump, is fixedly installed between two crossbeams 7. An adsorption bucket 86 is connected to the suction end of the vacuum pump 85. The adsorption bucket 86 is located directly above the welding joint of the two aluminum profile bodies 4. The vacuum pump 85 is started during welding to absorb the welding fumes generated during the welding process. Multiple adsorption positioning components 89 and branch pipes 88 are provided. The branch pipes 88 are fixedly mounted on the pressure plate 83. Each branch pipe 88 is connected to at least two adsorption positioning components 89. When the pressure plate 83 is pressed down to the top surface of the aluminum profile body 4, the adsorption positioning components 89 contact the top surface of the aluminum profile body 4. The adsorption positioning components 89 further enhance the positioning of the aluminum profile body 4. A flexible hose 87 is also connected between the branch pipe 88 and the adsorption bucket 86. When the vacuum pump 85 is working, the air pressure inside the vacuum pump 85 decreases, thereby allowing the adsorption bucket 86 to absorb the welding fumes generated during the welding process. At the same time, through the connection of the flexible hose 87, the air pressure inside the adsorption positioning components 89 decreases, thereby enabling adsorption on the top surface of the aluminum profile body 4. The static friction at the adsorption position increases the positioning effect of the aluminum profile body 4 in the X-axis direction.

[0038] Furthermore, the adsorption positioning component 89 includes: Suction cup 891 is usually made of rubber. The bottom of suction cup 891 is located below the plane where the bottom surface of pressure plate 83 is located. That is, during the pressing and positioning process, suction cup 891 first contacts the top surface of aluminum profile body 4. The conduit 892 is fixed and connected to the suction cup 891, that is, the conduit 892 is a hollow tube and is connected to the internal space of the suction cup 891; Connecting pipe 893 and conduit 892 are slidably disposed inside connecting pipe 893, and connecting pipe 893 is connected to branch pipe 88; A retaining spring 894 is fixedly connected at its top to the connecting tube 893 and at its bottom to the conduit 892, and is used to reset the relative position of the conduit 892 and the connecting tube 893. It should be noted that conduit 892, connecting pipe 893 and branch pipe 88 are all rigid pipes, and conduit 892 and connecting pipe 893 are connected by a sliding seal. As a more preferred embodiment, a solenoid valve is installed inside the adsorption bucket 86 and below the connection with the hose 87. Before the welding work begins, the solenoid valve is in the closed state. The top surface of the aluminum profile body 4 can be adsorbed and positioned by the suction cup 891 first. Then, during the welding process, the solenoid valve is opened so that the adsorption bucket 86 can start adsorbing welding fumes.

[0039] Furthermore, a welding fume filter cartridge 9 is also installed on the frame 1. The welding fume filter cartridge 9 is connected to the vacuum pump 85 through a pipeline to filter the welding fumes during the welding process and reduce the impact on the surrounding environment. It should be noted that the welding fume dust removal filter cartridge 9 is a common dust removal filter cartridge in the prior art. This application only uses its original function and does not improve its structure. Therefore, there is no need to describe its specific structure in this application.

[0040] The implementation principle of this embodiment is as follows: Before starting the equipment, place the two aluminum profile bodies 4 to be welded on the inner bottom surface of the outer frame 61 of the two sets of three-level positioning mechanisms 6 respectively. The welding end of the aluminum profile body 4 extends to the pad 31 of the first-level positioning mechanism 3. First, perform the first-level positioning in the X-axis direction: press the ends of the two aluminum profile bodies 4 against the axial contact surface of the axial baffle 33 of the two sets of first-level positioning mechanisms 3 respectively, and complete the initial axial alignment with the side contact surface of the side baffle 32. At this time, the butt end face of the two aluminum profile bodies 4 is tightly fitted, and the welding groove 34 is located directly below the butt weld.

[0041] Then, the moving cylinder 22 of the moving welding mechanism 2 is activated. The telescopic end of the moving cylinder 22 pushes the moving seat 23 to move to the left along the base 21. The moving seat 23 drives the lower tooth plate 51 to slide to the left along the lower guide rail 52. The lower tooth plate 51 meshes with the gear 55, causing the gear 55 to rotate clockwise. The gear 55 then drives the upper tooth plate 57 to slide to the right along the upper guide rail 56. The upper tooth plate 57 drives the two clamping blocks 59 to move to the right through the first connecting rod 58. The lower tooth plate 51 drives the two clamping blocks 511 to move to the left through the second connecting rod 510. The four L-shaped clamping blocks clamp the aluminum profile body 4 from both sides at the same time, completing the first positioning in the Y-axis direction.

[0042] As the movable seat 23 moves to the left, the two clamping cylinders 81 of the four-stage positioning mechanism 8 are activated simultaneously. The telescopic end pushes the pressure frame 82 downward, and the pressure frame 82 drives the pressure plate 83 to press down to the top surface of the aluminum profile body 4, completing the initial clamping in the Z-axis direction. During the downward movement of the pressure frame 82, the drive rod 84 simultaneously drives the drive frames 62 of the two three-stage positioning mechanisms 6 to slide downward along the outer frame 61. The drive frame 62 drives the pressure rod 64 downward through the overpressure assembly 63. The upper inclined surface of the bottom end of the pressure rod 64 fits against the lower inclined surface of the locking block 65, pushing the two locking blocks 65 to move towards each other along the guide groove 69 through the slider 66, clamping the aluminum profile body 4 from the left and right sides, completing the secondary positioning in the Y-axis direction. The overpressure spring in the overpressure assembly 63 has a much larger stiffness coefficient than the return spring. When the locking block 65 clamps the aluminum profile, the pressure rod 64 continues to move downward, which will compress the overpressure spring 632, avoiding excessive clamping force that could damage the surface of the aluminum profile.

[0043] When the pressure plate 83 presses down, the suction cup of the adsorption positioning component 89 first contacts the top surface of the aluminum profile, and the clamping spring 894 is compressed to ensure that the suction cup 891 is in close contact with the surface of the aluminum profile. Before welding begins, the solenoid valve in the adsorption bucket 86 is in the closed state. After the vacuum pump 85 is started, a negative pressure is formed in the suction cup 891 through the hose 87, the branch pipe 88, the connecting pipe 893 and the conduit 892, which adsorbs and fixes the aluminum profile body 4, further enhancing the positioning stability in the X-axis direction.

[0044] Subsequently, the welding oscillator 24 drives the welding torch 25 to weld the butt weld. The moving cylinder 22 pushes the moving seat 23 to move according to the welding progress, adjusting the welding position of the welding torch 25. During this process, the clamping block of the secondary positioning moves with the moving seat 23 and no longer constrains the aluminum profile. The clamping force in the Y-axis direction is continuously provided by the tertiary positioning locking block 65 to avoid the aluminum profile from shifting due to welding thermal deformation.

[0045] During the welding process, the solenoid valve inside the adsorption bucket 86 is opened, and the vacuum pump 85 simultaneously draws out the welding fumes through the adsorption bucket 86 to the welding point. The welding fumes are filtered through the pipeline into the welding fume dust removal filter cartridge 9 and then discharged. After the welding of one side is completed, the positioning mechanisms at each level are released, the aluminum profile is taken out, flipped, and repositioned, and the welding of the other side can be carried out. The above process is repeated to complete the entire welding operation. After the welding is completed, the clamping cylinder 81 retracts, the pressure frame 82 moves upward, the drive rod 84 drives the drive frame 62 to reset, the overpressure spring releases its elastic force and drives the pressure rod 64 to move upward, the locking block 65 resets under the action of the reset spring, the adsorption positioning component 89 stops adsorption, and the welded workpiece can be removed.

[0046] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of this invention.

Claims

1. An aluminum profile positioning and welding equipment, characterized in that, include: The frame (1) has a mounting platform on top; Two aluminum profile bodies (4); The movable welding mechanism (2) is used to weld two aluminum profile bodies (4); Two sets of primary positioning mechanisms (3) are arranged symmetrically at the center. The primary positioning mechanisms (3) are fixedly installed on the mounting platform. The primary positioning mechanisms (3) are used to perform initial positioning of the two aluminum profile bodies (4). Secondary positioning mechanism (5) is used to reposition the two aluminum profile bodies (4); Two sets of three-level positioning mechanisms (6) are symmetrically arranged. The two aluminum profile bodies (4) pass through the two sets of three-level positioning mechanisms (6) respectively and are axially connected. The three-level positioning mechanism (6) is used to perform the third positioning of the two aluminum profile bodies (4). The fourth-level positioning mechanism (8) is located directly above the two aluminum profile bodies (4). The fourth-level positioning mechanism (8) is used to perform the fourth positioning of the two aluminum profile bodies (4). Among them, the positioning mechanisms at all levels adopt linkage control to realize multi-level progressive positioning of the aluminum profile body (4); Two crossbeams (7) are fixedly set between two sets of three-level positioning mechanisms (6), and a four-level positioning mechanism (8) is fixedly set between the two crossbeams (7).

2. The aluminum profile positioning and welding equipment according to claim 1, characterized in that, The mobile welding mechanism (2) includes: The base (21) is fixedly mounted on the frame (1), and the upper part of the base (21) is located above the mounting platform; The movable seat (23) is slidably mounted on the base (21); The movable cylinder (22) is fixedly mounted on the base (21), and the bottom of the movable seat (23) is fixedly mounted on the telescopic end of the movable cylinder (22); Welding oscillator (24) is fixedly mounted on the movable seat (23), and a welding torch (25) is mounted on the welding oscillator (24).

3. The aluminum profile positioning and welding equipment according to claim 1, characterized in that, The primary positioning mechanism (3) includes: Two pads (31) are provided on both pads (31), and welding grooves (34) are located below the welding parts of the two aluminum profile bodies (4); Two side baffles (32) are fixedly mounted on two pads (31) respectively, and the two side baffles (32) are arranged in a centrally symmetrical manner. A contact surface is provided on the inner side of the side baffles (32). Two axial baffles (33) are vertically fixed on two pads (31) respectively, and the two axial baffles (33) are centrally symmetrically arranged. An axial contact surface is provided on the inner side of the axial baffle (33), and the contact surface between the axial contact surface and the two pads (31) is located on the same vertical plane.

4. The aluminum profile positioning and welding equipment according to claim 2, characterized in that, The secondary positioning mechanism (5) includes: The lower toothed plate (51) has one end fixedly mounted on the movable seat (23); Gear (55) meshes with the lower gear plate (51); The upper gear plate (57) meshes with the gear (55); Two clamping blocks (59) are fixedly provided with a connecting rod (58) at the bottom of each clamping block (59). The two connecting rods (58) are fixedly provided on both sides of the upper toothed plate (57). Two clamping blocks (511) are fixedly provided with two connecting rods (510) at the bottom of each clamping block (511). The two connecting rods (510) are fixedly provided on both sides of the lower toothed plate (51). The lower guide rail (52) and the lower toothed plate (51) are slidably mounted on the lower guide rail (52). A support rod (53) is fixedly mounted on the end of the lower guide rail (52) away from the lower toothed plate (51). The top end of the support rod (53) is fixedly mounted on the frame (1). Two stabilizers (54) are mounted between the two stabilizers (54), and the gear (55) is rotatably mounted between the two stabilizers (54). Both stabilizers (54) are fixedly mounted at the bottom of the lower guide rail (52). The upper guide rail (56) and the upper toothed plate (57) are slidably mounted on the upper guide rail (56), and the upper guide rail (56) is fixedly mounted on the frame (1).

5. The aluminum profile positioning and welding equipment according to claim 1, characterized in that, The three-level positioning mechanism (6) includes: The outer frame (61) has an inner bottom surface for supporting the aluminum profile body (4) to be welded. Drive frame (62), drive frame (62) is slidably mounted on outer frame (61); Two sets of overpressure components (63) are fixedly installed at the bottom of the drive frame (62); Two pressure rods (64) are fixedly installed at the bottom of the two sets of overpressure components (63), and an upper inclined surface (64a) is provided at the bottom end of the pressure rod (64). Two locking blocks (65), the aluminum profile body (4) is positioned between the two locking blocks (65) during positioning, and a lower inclined surface (65a) is provided on the locking blocks (65). A slider (66) is fixed to the bottom of the locking block (65). The bottom of the slider (66) is slidably set at the bottom of the inner wall of the outer frame (61). A guide groove (69) for the slider (66) to pass through is provided on the inner bottom surface of the outer frame (61). The positioning seat (67) has two fixed reset springs (68) on both sides, and the ends of the two reset springs (68) are fixedly connected to the two sliders (66).

6. The aluminum profile positioning and welding equipment according to claim 5, characterized in that, The overpressure assembly (63) includes a sliding sleeve (631) and an overpressure spring (632). The overpressure spring (632) is located inside the sliding sleeve (631). The stiffness coefficient k1 of the overpressure spring (632) is much greater than the stiffness coefficient k2 of the return spring (68). The top of the pressure rod (64) is slidably disposed inside the sliding sleeve (631). The top of the sliding sleeve (631) is fixedly connected to the bottom of the drive frame (62). The top of the overpressure spring (632) is fixedly connected to the bottom of the drive frame (62), and the bottom of the overpressure spring (632) is fixedly connected to the top of the pressure rod (64).

7. The aluminum profile positioning and welding equipment according to claim 6, characterized in that, The fourth-level positioning mechanism (8) includes: Two clamping cylinders (81) are fixedly installed between two crossbeams (7); Two pressure frames (82) are fixedly installed at the telescopic ends of two pressure cylinders (81), and the two pressure frames (82) are moved by the pressure cylinders (81); Two pressure plates (83) are fixedly installed at the bottom of two pressure frames (82); The drive rod (84) is fixedly connected to two pressure frames (82) on one side, and the two ends of the drive rod (84) are fixedly connected to two drive frames (62) respectively.

8. The aluminum profile positioning and welding equipment according to claim 7, characterized in that, The fourth-level positioning mechanism (8) also includes: Vacuum pump (85) is fixedly installed between two crossbeams (7). An adsorption bucket (86) is connected to the suction end of the vacuum pump (85). The adsorption bucket (86) is located directly above the welding point of the two aluminum profile bodies (4). Multiple adsorption positioning components (89) and branch pipes (88) are provided. The branch pipes (88) are fixedly installed on the pressure plate (83). Each branch pipe (88) is connected to at least two adsorption positioning components (89). When the pressure plate (83) is pressed down to the top surface of the aluminum profile body (4), the adsorption positioning components (89) contact the top surface of the aluminum profile body (4). A flexible hose (87) is also connected between the branch pipe (88) and the adsorption hopper (86).

9. The aluminum profile positioning and welding equipment according to claim 8, characterized in that, The adsorption positioning component (89) includes: The bottom of the suction cup (891) is located below the plane of the bottom surface of the pressure plate (83); The catheter (892) is fixed and connected to the suction cup (891); The connecting pipe (893) and the conduit (892) are slidably disposed inside the connecting pipe (893), and the connecting pipe (893) is connected to the branch pipe (88); A retaining spring (894) is fixedly connected at the top to the connecting tube (893) and at the bottom to the conduit (892).

10. The aluminum profile positioning and welding equipment according to claim 8, characterized in that, The frame (1) is also equipped with a welding fume dust removal filter cartridge (9), which is connected to the vacuum pump (85) through a pipeline.

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