An aluminum welding process and apparatus therefor

Abstract

The present application relates to the technical field of metal welding, in particular to an aluminum welding process and equipment thereof, which comprises a workbench, a point-shaped wire feeding mechanism, a driving mechanism and two groups of aluminum sheet clamps are arranged on the workbench, a supporting table is formed on the top of the workbench, each group of aluminum sheet clamps comprises three groups of elastic contact elements, each group of elastic contact elements comprises a contact plate, the point-shaped wire feeding mechanism comprises a strip-shaped base, a moving seat and a crank, a telescopic rod is slidably connected to the crank, a strip-shaped slot is arranged in the telescopic rod, a slide pin is arranged in the moving seat, and a wave-shaped convex is formed on the top of the strip-shaped base, the device realizes automatic wire feeding of the electrode in a point-shaped manner through the point-shaped wire feeding mechanism, at this time, the operator only needs to hold the electrode and follow the rhythm of the electrode swing to weld, thereby solving the problem of uneven weld caused by manual wire feeding failure, and greatly reducing the technical level requirement of the operator himself, which is convenient for factory to carry out a large amount of aluminum welding.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, specifically to an aluminum welding process and equipment. Background Technology

[0002] Aluminum welding refers to the welding of aluminum or aluminum alloys, encompassing various techniques and welding processes. Traditional aluminum welding techniques are mostly divided into:

[0003] 1. Aluminum TIG welding: Welding is done using an aluminum welding machine. This is a fusion welding method and is commonly used for welding conventional aluminum structural parts or aluminum pressure-bearing parts.

[0004] 2. Aluminum welding: A DC welding machine is used as the power source, and the electrode is fed quickly, generally twice the feeding speed of a conventional carbon steel welding electrode. The angle of the electrode tilt should be as large as possible.

[0005] 3. Aluminum pulsed gas shielded welding: Welding is performed using a pulsed gas shielded welding machine as the welding power source and coiled wire as the welding wire;

[0006] 4. Low-temperature aluminum flame welding: Welding can be performed using low-temperature welding wire and flux;

[0007] Traditionally, aluminum welding often requires the use of welding rods or welding wires to fill the weld seam. The operator holds the welding rod and welding torch with both hands, making point-like contact between the welding rod and the weld seam. The welding rod feeding technique involves tightly gripping the welding wire between the thumb and index or middle finger, using the thumb to push the wire forward along the fingertip of the index finger through friction. The wire then passes between the ring and little fingers for positioning. This point-like wire feeding method is characterized by stable and rapid, uninterrupted wire feeding, better ensuring weld quality. However, manual wire feeding can be affected by operator tremors, leading to the welding rod being fed in before the molten pool forms on the aluminum sheet. This results in incomplete fusion of the weld droplets with the weld seam, causing noticeable and bulging slag after cooling, leading to an uneven weld seam. Furthermore, manual wire feeding requires highly skilled operators, and manpower cannot be sufficient for large-scale aluminum welding. Therefore, a new aluminum welding process and equipment are needed to address these problems. Summary of the Invention

[0008] Therefore, it is necessary to provide an aluminum welding process and equipment to address the existing technical problems.

[0009] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows: an aluminum welding equipment, including a worktable, a point-feeding wire mechanism, a driving mechanism, and two sets of aluminum sheet clamps symmetrical about the point-feeding wire mechanism. The top of the worktable is formed with a support platform for supporting two aluminum sheets. The support platform, the point-feeding wire mechanism, and the driving mechanism are distributed sequentially along the length of the worktable. Each set of aluminum sheet clamps includes three sets of elastic abutment members corresponding to three sides of one of the aluminum sheets. Each set of elastic abutment members includes an abutment plate that elastically abuts against one side of the corresponding aluminum sheet. The point-feeding wire mechanism includes a strip-shaped base, a movable seat, and a rocker arm. The strip-shaped base is fixedly mounted on the worktable, and the movable seat slides against the strip-shaped base. The movable base is hollow and connected to the support platform. A strip support arm is fixed on the side of the movable base facing the support platform. The middle part of the rocker arm is hinged to the strip support arm. One end of the rocker arm extends into the movable base. A telescopic rod that can extend horizontally toward the support platform is slidably connected to the rocker arm. A strip slot for horizontal insertion of welding rod is provided in the telescopic rod. A vertical sliding pin is provided in the movable base. The sliding pin is elastically connected to the movable base. The sliding pin is used to move up and down to drive the end of the rocker arm that extends into the movable base to swing up and down. The lower end of the sliding pin is rounded. The top of the strip base has a wave-shaped protrusion along its length that matches the lower end of the sliding pin. The drive mechanism is used to drive the movable base to move slowly along the length of the strip base.

[0010] Furthermore, the movable seat is a rectangular shell with an open top. A horizontal cover plate is fixedly installed on the open top of the movable seat. A vertical cylindrical sleeve is formed on the top of the cover plate. The top of the cylindrical sleeve is also open, and a screw cap is screwed onto the open top of the cylindrical sleeve. A limiting disc is coaxially formed on the upper end of the sliding pin, which slides against the inner wall of the cylindrical sleeve. The lower end of the sliding pin passes downward through the cover plate and the movable seat in sequence. A vertical No. 1 spring is installed inside the cylindrical sleeve, and the two ends of the No. 1 spring abut against the bottom of the screw cap and the top of the limiting disc, respectively.

[0011] Furthermore, a pin is fixed on the sliding pin with its axis perpendicular to the axis of the sliding pin. The end of the rocker arm that extends into the movable seat has two support bars that correspond one-to-one with the pin along the length of the rocker arm. The sliding pin is located between the two support bars. Each support bar has a strip-shaped groove along its length. The two ends of the pin slide in contact with the two strip-shaped grooves respectively. A vertical clearance groove is provided on one side wall of the movable seat to accommodate the vertical displacement of one end of the rocker arm.

[0012] Furthermore, a rectangular through slot is formed along the length of the rocker arm, and a first strip-shaped notch connected to the rectangular through slot is formed at the top of the rocker arm along its length. The telescopic rod is movably disposed within the rectangular through slot. A sliding self-locking component is fixed at one end of the telescopic rod near the moving seat. The sliding self-locking component includes a slider, a second spring, and two limit pins. The slider is slidably disposed within the rectangular through slot. A receiving groove is formed inward at the top of the slider, and a mounting plate is covered on the receiving groove. First columnar sliding grooves connected to the receiving grooves are formed on both sides of the slider. The two first columnar sliding grooves are coaxial and their axial directions are both perpendicular to the rectangular through slot. The length direction of the rectangular through groove is perpendicular to each other. Two limiting pins are slidably installed in two columnar sliding grooves. A second spring is horizontally installed in the receiving groove and located between the two limiting pins. The two ends of the second spring abut against the ends of the two limiting pins that extend into the receiving groove. The other end of each limiting pin is rounded. The inner walls on both sides of the rectangular through groove are formed with second wave-shaped protrusions that cooperate with the rounded ends of the two limiting pins. The top of the slider is formed with a vertical guide part that slides with the first strip notch. The upper end of the vertical guide part is formed with an anti-slip push block located outside the rocker arm.

[0013] Furthermore, the length direction of the strip slot is consistent with the length direction of the telescopic rod. The top of the telescopic rod has a second strip notch that communicates with the strip slot along its length direction. A clamping block is slidably installed inside the strip slot. The upper half of the clamping block is gradually narrowed and slides in cooperation with the second strip notch. An elastic pressure strip for fixing one end of the welding rod is formed on the upper half of the clamping block. Rubber strips for increasing the sliding friction between the clamping block and the strip slot are fixed on both sides of the clamping block.

[0014] Furthermore, each set of resilient abutment elements also includes:

[0015] A strip-shaped fixing seat is horizontally fixed on the top of the workbench, and one end of the strip-shaped fixing seat has a second columnar sliding groove.

[0016] A circular plate is fixedly mounted on the opening formed by the No. 2 columnar sliding groove at one end of the strip-shaped fixing seat;

[0017] The sliding column is horizontal, with a convex ring formed at one end that slides with the inner wall of the second column-shaped sliding groove, and the other end extends horizontally out of the strip-shaped fixing seat and toward the support platform.

[0018] Spring No. 3 is horizontally positioned inside the columnar groove No. 2. The two ends of Spring No. 3 abut against the end of the slide column with the protruding ring and the circular plate, respectively.

[0019] Each contact plate is vertically fixed to the extension end of the sliding column, and each contact plate has an arc-shaped guide section at its upper end, and each contact plate has a guide wheel axially connected to the lower end of the worktable for sliding cooperation with the top of the worktable.

[0020] Furthermore, the drive mechanism includes:

[0021] The sliding sleeve is horizontally fixed on the strip-shaped base;

[0022] The slide rod is slidably disposed within the sliding sleeve. One end of the slide rod is connected to the movable seat. Several limiting strips are formed on the outer wall of the slide rod along its length. Several limiting grooves that mate with the limiting strips are formed on the inner wall of the sliding sleeve. A No. 3 columnar sliding groove is coaxially provided inside the slide rod. The other end of the slide rod is an open structure that communicates with the No. 3 columnar sliding groove.

[0023] The threaded rod is horizontal, with one end extending into the No. 3 columnar groove.

[0024] The fixing pin is vertically fixed on the outer wall of the slide bar. The lower end of the fixing pin is round and extends downward into the No. 3 columnar slide groove to engage with the threaded rod.

[0025] The motor is fixed horizontally on the workbench, and the output shaft of the motor is connected to the other end of the threaded rod through a gearbox.

[0026] A process for aluminum welding equipment, the process comprising the following steps:

[0027] S1. Before fixing the two aluminum sheets, grind the welded part of the two aluminum sheets to remove the oxide layer, and then dry the two aluminum sheets after grinding.

[0028] S2, Place the two dried aluminum sheets on the support platform and fix them in place;

[0029] S3, Insert the welding rod into the strip insert for fixation;

[0030] S4, start the drive mechanism to move the moving seat, at which time the operator follows the rhythm of the welding rod swinging up and down to weld the weld between the two aluminum sheets.

[0031] The beneficial effects of this invention compared to the prior art are:

[0032] Firstly, this device automatically feeds the welding rod in a point-to-point manner through a point-to-point wire feeding mechanism. At this time, the operator only needs to hold the welding rod and follow the rhythm of the welding rod swing to weld. This solves the problem of uneven weld caused by errors in manual wire feeding. Furthermore, the automatic wire feeding greatly reduces the technical level required of the operator, making it easier for the factory to perform large-scale aluminum welding.

[0033] Secondly, the aluminum sheet clamp of this device uses an elastically connected abutment plate to abut against the side of the aluminum sheet to fix the aluminum sheet. Therefore, the abutment plate has extensibility through elastic connection, which makes the aluminum sheet clamp suitable for aluminum sheets of different sizes.

[0034] Thirdly, the welding rod of this device is slidably mounted on the telescopic rod, which is in turn slidably mounted on the rocker arm. This allows the welding rod to extend twice, ensuring that it can fully extend for welding and preventing waste of the welding rod. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of an embodiment;

[0036] Figure 2 yes Figure 1 A magnified view of the area indicated by A1 in the diagram;

[0037] Figure 3 yes Figure 1 The enlarged view of the area indicated by A2 in the diagram;

[0038] Figure 4 yes Figure 1 The enlarged view of the area indicated in A3;

[0039] Figure 5 yes Figure 1 The enlarged view shown in section A4;

[0040] Figure 6 This is a top view of an embodiment;

[0041] Figure 7 yes Figure 6 Sectional view along line AA;

[0042] Figure 8 yes Figure 7 The enlarged view of the area indicated in A5;

[0043] Figure 9 yes Figure 7 The enlarged view of the area indicated by A6 in the middle;

[0044] Figure 10 yes Figure 7 The enlarged view of the area indicated by A7 in the diagram;

[0045] Figure 11 This is a three-dimensional structural diagram of the sliding pin and rocker arm in an embodiment;

[0046] Figure 12 yes Figure 6 Sectional view along line BB;

[0047] Figure 13 yes Figure 12 A magnified view of the area indicated by A8 in the diagram;

[0048] Figure 14 This is a front view of the rocker arm in the embodiment;

[0049] Figure 15 yes Figure 14 Sectional view along line CC;

[0050] Figure 16 yes Figure 14 Sectional view along line DD;

[0051] Figure 17 This is an exploded perspective view of the sliding self-locking component in the embodiment;

[0052] Figure 18 This is a top view of the telescopic rod in the embodiment;

[0053] Figure 19 yes Figure 18 A cross-sectional view along line EE.

[0054] The following are labeled in the diagram: 1. Support platform; 2. Contact plate; 3. Strip base; 4. Movable seat; 5. Rocker arm; 6. Strip support arm; 7. Telescopic rod; 8. Strip slot; 9. Sliding pin; 10. First wavy protrusion; 11. Cover plate; 12. Cylindrical sleeve; 13. Rotary cap; 14. Limiting disc; 15. First spring; 16. Pin; 17. Support bar; 18. Strip groove; 19. Vertical clearance groove; 20. Rectangular through groove; 21. First strip notch; 22. Slider; 23. Second spring; 24. Limiting pin; 25. Receiving groove; 26. Mounting plate; 27. 1. Columnar slide groove No. 1; 28. Corrugated protrusion No. 2; 29. ​​Vertical guide slide; 30. Anti-slip push block; 31. Strip notch No. 2; 32. Clamping block; 33. Elastic pressure strip; 34. Rubber strip; 35. Strip fixed seat; 36. Columnar slide groove No. 2; 37. Circular plate; 38. Sliding column; 39. Spring No. 3; 40. Arc-shaped guide slide; 41. Guide pulley; 42. Sliding sleeve; 43. Sliding rod; 44. Limiting strip; 45. Columnar slide groove No. 3; 46. Threaded rod; 47. Fixing pin; 48. Motor; 49. Gearbox; 50. Workbench; 51. Welding torch. Detailed Implementation

[0055] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0056] refer to Figures 1 to 19The aluminum welding equipment shown includes a worktable 50, on which a point-feeding wire mechanism, a driving mechanism, and two sets of aluminum sheet clamps symmetrically arranged about the point-feeding wire mechanism are provided. A support platform 1 for supporting two aluminum sheets is formed on the top of the worktable 50. The support platform 1, the point-feeding wire mechanism, and the driving mechanism are distributed sequentially along the length of the worktable 50. Each set of aluminum sheet clamps includes three sets of elastic abutment members corresponding to three sides of one of the aluminum sheets. Each set of elastic abutment members includes an abutment plate 2 that elastically abuts against one side of the corresponding aluminum sheet. The point-feeding wire mechanism includes a strip base 3, a movable seat 4, and a rocker arm 5. The strip base 3 is fixedly mounted on the worktable 50, and the movable seat 4 is slidably connected to the strip base 3 and is hollow inside. A strip support arm 6 is fixedly provided on the side of the movable seat 4 facing the support platform 1. The middle part of the rocker arm 5 is hinged to the strip support arm 6. One end of the rocker arm 5 extends into the movable seat 4. A telescopic rod 7 that can extend horizontally toward the support platform 1 is slidably connected to the rocker arm 5. A strip slot 8 for horizontal insertion of welding rod is provided in the telescopic rod 7. A vertical sliding pin 9 is provided in the movable seat 4. The sliding pin 9 is elastically connected to the movable seat 4. The sliding pin 9 is used to move up and down to drive the end of the rocker arm 5 that extends into the movable seat 4 to swing up and down. The lower end of the sliding pin 9 is rounded. The top of the strip base 3 is formed with a first wave-shaped protrusion 10 along its length direction to cooperate with the lower end of the sliding pin 9. The driving mechanism is used to drive the movable seat 4 to move slowly along the length direction of the strip base 3 on the strip base 3.

[0057] This device is used to assist manual aluminum welding. A welding gun 51 for the operator to hold is provided on the side of the workbench 50. When in use, the operator first places two aluminum sheets horizontally on the support 1 so that the two aluminum sheets are at the same height. Then, the two aluminum sheets are pressed together by two sets of aluminum sheet clamps. At this time, each contact plate 2 is in contact with one side of the corresponding aluminum sheet, so that the opposite sides of the two aluminum sheets are pressed together to form a weld. The sides of the two aluminum sheets on the same side are also flush. During welding, the wire is fed to the weld seam of the two aluminum sheets by a dotted wire feeding mechanism. At the same time, the operator only needs to control the welding gun 51 to weld.

[0058] Point-feeding process:

[0059] First, the welding rod is inserted into the strip slot 8 and fixed, with one end of the welding rod extending out of the telescopic rod 7. In the initial state, one end of the rocker arm 5 is driven downward by the sliding pin 9, causing the rocker arm 5 to be tilted in the initial state. At this time, the extended end of the welding rod is tilted downward and located on the weld seam of the two aluminum sheets. The end of the extended end of the welding rod is located above one end of the weld seam. When the moving seat 4 moves, it will drive the end of the extended end of the welding rod to move from one end of the weld seam to the other end of the weld seam. After that, the driving mechanism drives the moving seat 4 to move horizontally away from the support platform 1 along the length direction of the strip base 3. During this process, the rounded lower end of the sliding pin 9 will slide on the top of the strip base 3. Once the rounded lower end of the sliding pin 9 contacts the crest of the first wavy protrusion 10, the sliding pin 9 will be pushed upward. At this time, the end of the rocker arm 5 that extends into the moving seat 4 will be lifted by the sliding pin 9. The protruding end of the welding rod will swing downwards, so that the end of the protruding end of the welding rod comes into contact with the weld. Before this, the operator melts the weld to form a molten pool by the high temperature emitted by the welding gun 51. When the end of the protruding end of the welding rod comes into contact with the molten pool, it will also be melted by the welding gun 51 to form a molten droplet. After that, the molten droplet will drip onto the molten pool. After the molten droplet and the molten pool cool down, they will form dots and fill the weld. Since the first wavy protrusion 10 has a certain length, during the horizontal displacement of the moving seat 4, the end of the rocker arm 5 that extends into the moving seat 4 will be continuously driven up and down by the sliding pin 9. As the welding rod moves along the weld, the end of the protruding end of the welding rod will continuously separate from the weld. Then, when the operator holds the welding gun 51 and heats the weld in rhythm with the welding rod contacting the weld, several continuous, flat and linearly distributed welding points will appear on the weld. At this point, the two aluminum sheets are welded.

[0060] The amount of welding rod consumed when the welding rod melts to form welding droplets is relatively small. However, if welding continues, the welding rod will be consumed and gradually become shorter. At this time, the extension rod 7 is used to extend the length of the welding rod extension end to prevent the end of the welding rod extension end from not contacting the weld when it swings down.

[0061] This device utilizes the surface tension of the molten electrode droplets to fill the weld seam, and uses a point-feeding mechanism to continuously deliver the electrode in points, resulting in a smooth weld seam that is less prone to air bubbles.

[0062] To enable the sliding pin 9 to move upward elastically after engaging with the first wavy protrusion 10, the following features are specifically designed:

[0063] The movable seat 4 is a rectangular shell with an open top. A horizontal cover plate 11 is fixed on the open top of the movable seat 4. A vertical cylindrical sleeve 12 is formed on the top of the cover plate 11. The top of the cylindrical sleeve 12 is also open. A screw cap 13 is screwed onto the open top of the cylindrical sleeve 12. A limiting disc 14 is coaxially formed on the upper end of the sliding pin 9 and slides against the inner wall of the cylindrical sleeve 12. The lower end of the sliding pin 9 passes through the cover plate 11 and the movable seat 4 in sequence. A vertical first spring 15 is provided inside the cylindrical sleeve 12. The two ends of the first spring 15 abut against the bottom of the screw cap 13 and the top of the limiting disc 14, respectively.

[0064] In the initial state, spring 15 fully releases its elastic force and slides downward within cylindrical sleeve 12 against limiting disc 14. At this time, the rounded lower end of sliding pin 9 abuts against one of the troughs of wavy protrusion 10. Simultaneously, one end of rocker arm 5 extending into movable seat 4 is driven downward by sliding pin 9, causing the other end of rocker arm 5 to lift the protruding end of welding rod. Thus, in the initial state, the protruding end of welding rod is positioned above the weld. When movable seat 4 moves, the lower end of sliding pin 9 slides horizontally on strip base 3, while sliding pin 9 slides downward due to the wavy protrusion 10. As the sliding pin 9 slides up and down, when it slides toward the crest of the first wavy protrusion 10, the limiting disc 14 will move upward within the cylindrical sleeve 12 and compress the first spring 15, causing the first spring 15 to generate elastic force. Once the sliding pin 9 gradually slides toward the trough of the first wavy protrusion 10, the elastic force of the first spring 15 will again resist the limiting disc 14 and slide downward within the cylindrical sleeve 12. Repeating the above steps, the sliding pin 9 will slide up and down while moving horizontally. The up and down sliding of the sliding pin 9 will drive the end of the rocker arm 5 that extends into the moving seat 4 to swing up and down, ultimately achieving point contact between the welding rod and the weld.

[0065] In order to enable one end of the rocker arm 5 to swing up and down by the sliding pin 9, the following features are specifically designed:

[0066] A pin 16 is fixed on the sliding pin 9, with its axis perpendicular to the axis of the sliding pin 9. The end of the rocker arm 5 that extends into the movable seat 4 is formed with two support bars 17 that correspond one-to-one with the pin 16 along the length direction of the rocker arm 5. The sliding pin 9 is located between the two support bars 17. Each support bar 17 has a strip-shaped groove 18 along its length direction. The two ends of the pin 16 are respectively slidably engaged with the two strip-shaped grooves 18. A vertical clearance groove 19 is provided on one side wall of the movable seat 4 to accommodate the vertical displacement of one end of the rocker arm 5.

[0067] Each strip groove 18 has a proximal end near the rocker arm 5 and a distal end away from the rocker arm 5. When the sliding pin 9 slides on the strip base 3 toward the crest of the first wavy protrusion 10, the sliding pin 9 drives the pin 16 upward. During this process, both ends of the pin 16 will slide toward the distal end of the two strip grooves 18 respectively. At the same time, both ends of the pin 16 will drive the two support bars 17 upward respectively. Thus, one end of the rocker arm 5 that extends into the movable seat 4 is lifted, and the other end of the rocker arm 5, that is, the end with the welding rod, will... When the sliding pin 9 slides on the strip base 3 toward the trough of the first wave pattern protrusion 10, the sliding pin 9 drives the pin 16 downward. During this process, the two ends of the pin 16 will slide in the two strip grooves 18 toward the near end of the strip grooves 18 respectively. At the same time, the two ends of the pin 16 will drive the two support bars 17 to swing down. In this way, the entire rocker arm 5 extends into the movable seat 4 and swings down. Then the welding rod will be lifted. When the movable seat 4 moves horizontally, the sliding pin 9 repeats the above steps, and finally realizes the up and down swing of the welding rod when it moves horizontally.

[0068] To prevent the telescopic rod 7 from sliding within the rocker arm 5 due to inertia during the up-and-down swing of the rocker arm 5, the following features are specifically designed:

[0069] A rectangular through groove 20 is formed along the length of the rocker arm 5. A first strip-shaped notch 21, which communicates with the rectangular through groove 20, is formed at the top of the rocker arm 5 along its length. The telescopic rod 7 is movably disposed within the rectangular through groove 20. A sliding self-locking component is fixed at one end of the telescopic rod 7 near the movable seat 4. The sliding self-locking component includes a slider 22, a second spring 23, and two limiting pins 24. The slider 22 is slidably disposed within the rectangular through groove 20. A receiving groove 25 is formed inward at the top of the slider 22. A mounting plate 26 is covered on the receiving groove 25. First columnar sliding grooves 27, which communicate with the receiving grooves 25, are formed on both sides of the slider 22. The two first columnar sliding grooves 27 are coaxial and their axial directions are both perpendicular to the rectangular through groove 20. The length direction of the through groove 20 is perpendicular. Two limiting pins 24 are slidably disposed in two first columnar sliding grooves 27. The second spring 23 is horizontally disposed in the receiving groove 25 and located between the two limiting pins 24. The two ends of the second spring 23 respectively abut against the ends of the two limiting pins 24 that extend into the receiving groove 25. The other end of each limiting pin 24 is rounded. The inner walls on both sides of the rectangular through groove 20 are formed with second wave-shaped protrusions 28 that respectively cooperate with the rounded ends of the two limiting pins 24. The top of the slider 22 is formed with a vertical guide part 29 that slides and cooperates with the first strip-shaped notch 21. The upper end of the vertical guide part 29 is formed with an anti-slip push block 30 located outside the rocker arm 5.

[0070] The sliding self-locking component is used to self-lock the telescopic rod 7 after it extends or retracts within the rocker arm 5, preventing the telescopic rod 7 from sliding within the rocker arm 5 due to inertia when the rocker arm 5 swings up and down. Specifically, it has the following features:

[0071] In the initial state, spring 23 is fully released, and the two limiting pins 24 slide toward the inner walls on both sides of the rectangular through groove 20. The rounded end of each limiting pin 24 abuts against the corresponding inner wall of the rectangular through groove 20. At this time, the rounded end of each limiting pin 24 is located at the trough of the corresponding second wavy protrusion 28. Therefore, the rounded end of each limiting pin 24 is limited by two crests of the corresponding second wavy protrusion 28. When the rocker arm 5 swings up and down, due to the small swing amplitude of the rocker arm 5, the inertia generated by the telescopic rod 7 prevents each limiting pin 24 from sliding out between the corresponding two crests. Therefore, the entire telescopic rod 7 will be locked. When it is necessary to extend the telescopic rod 7, press down with your finger to prevent it from extending. Slide the push block 30 and push the anti-slip push block 30 toward the weld seam between the two aluminum sheets. The anti-slip push block 30 will drive the slider 22 to slide in the rectangular through groove 20. At this time, the round end of each limit pin 24 will slide from the trough of the corresponding second wave ridge 28 to the adjacent peak. At this time, the two limit pins 24 will compress the second spring 23, so that the second spring 23 generates elastic force. After that, when the limit pin 24 slides to the trough of the second wave ridge 28 again, the elastic force of the second spring 23 will once again push the round end of the two limit pins 24 into the trough of the second wave ridge 28. Similarly, when it is necessary to retract the telescopic rod 7, press the anti-slip push block 30 with your finger and push the anti-slip push block 30 toward the moving seat 4.

[0072] To prevent the welding electrode from sliding within the strip slot 8 due to inertia when the telescopic rod 7 swings, the following features are specifically designed:

[0073] The length direction of the strip slot 8 is consistent with the length direction of the telescopic rod 7. The top of the telescopic rod 7 has a second strip notch 31 that communicates with the strip slot 8 along its length direction. A clamping block 32 is slidably provided inside the strip slot 8. The upper half of the clamping block 32 is gradually narrowed and slides in cooperation with the second strip notch 31. An elastic pressure strip 33 for fixing one end of the welding rod is formed on the upper half of the clamping block 32. Rubber strips 34 for increasing the sliding friction between the clamping block 32 and the strip slot 8 are fixed on both sides of the clamping block 32.

[0074] When installing the welding rod, first insert the welding rod into the strip slot 8, then fix one end of the welding rod with the elastic pressure strip 33, and let the other end of the welding rod extend out of the telescopic rod 7 so that the welding heating forms molten droplets to fill the weld. After a period of use, the welding rod will become shorter. At this time, the displacement clamp 32 can be used to make the extended end of the welding rod longer. If the welding rod continues to shorten and the end of the extended end of the welding rod cannot reach the weld after the clamp 32 slides to the limit, then push the anti-slip push block 30 to make the entire telescopic rod 7 extend and move towards the weld, thereby further increasing the extension length of the extended end of the welding rod.

[0075] In order to enable several sets of elastic abutment members to clamp and fix the aluminum sheet, the following features are specifically designed:

[0076] Each set of resilient abutment components also includes:

[0077] A strip-shaped fixing seat 35 is horizontally fixed on the top of the workbench 50, and a second columnar sliding groove 36 is opened inward at one end of the strip-shaped fixing seat 35.

[0078] A circular plate 37 is fixedly mounted on the opening formed by the second columnar groove 36 at one end of the strip-shaped fixing seat 35;

[0079] The sliding column 38 is horizontal, with a convex ring formed at one end that slides and engages with the inner wall of the second columnar sliding groove 36, and the other end extends horizontally out of the strip-shaped fixing seat 35 and toward the support platform 1.

[0080] Spring No. 39 is horizontally positioned inside columnar groove No. 2. The two ends of spring No. 39 abut against the end of the slide column 38 with the protruding ring and the circular plate 37, respectively.

[0081] Each contact plate 2 is vertically fixed to the extended end of the sliding column 38, and each contact plate 2 has an arc-shaped guide slide part 40 formed at its upper end, and each contact plate 2 has a guide pulley 41 axially connected to the lower end of the worktable 50 for sliding cooperation with the top of the worktable 50.

[0082] In the initial state, the third spring 39 fully releases its elastic force, thereby resisting the sliding column 38 and driving the contact plate 2 to move towards the support platform 1. There are a total of six sets of elastic contact parts. After the two aluminum sheets are placed on the support platform 1, the opposite sides of the two aluminum sheets are attached to each other to form a weld. The other sides of the two aluminum sheets correspond to an elastic contact part. During the placement of the aluminum sheets, the side of each aluminum sheet will first contact the arc-shaped guide slide part 40 at the upper end of the corresponding contact plate 2, and then the contact plate 2 will push against the strip fixed seat 35. At this time, the contact plate 2 will drive the sliding column 38 to slide in the second columnar sliding groove 36 and compress the third spring 39, so that the third spring 39 generates elastic force. After that, when the two aluminum sheets are placed on the support platform 1, the elastic force of the third spring 39 will resist the side of the corresponding aluminum sheet. Then, the symmetrical sides of the larger aluminum sheet formed by the two aluminum sheets after being combined will be pressed against each other by the corresponding two contact plates 2.

[0083] The guide rollers 41 at the lower end of each contact plate 2 are used to reduce the sliding friction between the contact plate 2 and the top of the worktable 50.

[0084] In order to enable the drive mechanism to move the movable seat 4 slowly, the following features are specifically designed:

[0085] The drive mechanism includes:

[0086] The sliding sleeve 42 is horizontally fixed on the strip-shaped base 3;

[0087] The slide rod 43 is slidably disposed within the slide sleeve 42. One end of the slide rod 43 is connected to the movable seat 4. Several limiting strips 44 are formed on the outer wall of the slide rod 43 along its length. Several limiting grooves that cooperate with the limiting strips 44 are formed on the inner wall of the slide sleeve 42. A third columnar sliding groove 45 is coaxially provided inside the slide rod 43. The other end of the slide rod 43 is an open structure that communicates with the third columnar sliding groove 45.

[0088] The threaded rod 46 is horizontal, and one end of the threaded rod 46 extends into the No. 3 columnar sliding groove 45.

[0089] The fixing pin 47 is vertically fixed on the outer wall of the slide bar 43. The lower end of the fixing pin 47 is round and extends downward into the No. 3 columnar slide groove 45 to engage with the threaded rod 46.

[0090] The motor 48 is horizontally fixed on the worktable 50, and the output shaft of the motor 48 is connected to the other end of the threaded rod 46 through the reduction gearbox 49.

[0091] When the motor 48 starts, the speed reduction of the gearbox 49 causes the threaded rod 46 to rotate slowly. At the same time, since the fixed pin 47 connected to the slide rod 43 is threadedly engaged with the threaded rod 46, the slide rod 43 will slowly move horizontally within the sliding sleeve 42. In this way, the movement of the moving seat 4 is driven by the displacement of the slide rod 43.

[0092] The rotation of the slide rod 43 is restricted by the cooperation of several limiting strips 44 on the outer wall of the slide rod 43 and several limiting grooves on the inner wall of the slide sleeve 42, so that the slide rod 43 can only make horizontal displacement along its axial direction.

[0093] A process for aluminum welding equipment, the process comprising the following steps:

[0094] S1. Before fixing the two aluminum sheets, grind the welded part of the two aluminum sheets to remove the oxide layer, and then dry the two aluminum sheets after grinding.

[0095] The oxide layer on aluminum sheets is prone to generating bubbles during welding, which ultimately results in uneven weld joints and makes the weld seam prone to breakage. Therefore, the aluminum sheets need to be polished before welding and dried to further reduce the generation of bubbles during welding.

[0096] S2, Place the two dried aluminum sheets on the support 1 and fix them in place;

[0097] Two aluminum sheets are supported by a support platform 1, which ensures that the two aluminum sheets are at the same height. During the process of supporting the two aluminum sheets on the support platform 1, the side of each aluminum sheet will first contact the arc-shaped guide slide part 40 at the upper end of the corresponding abutment plate 2, and then the abutment plate 2 will push against the strip-shaped fixing seat 35. At this time, the abutment plate 2 will drive the sliding column 38 to slide in the second columnar sliding groove 36 and compress the third spring 39, so that the third spring 39 generates elastic force. After that, when the two aluminum sheets are placed on the support platform 1, the elastic force of the third spring 39 abuts against the side of the corresponding aluminum sheet. Then, the symmetrical sides of the larger aluminum sheet formed by the two aluminum sheets after being combined will be pressed against each other by the corresponding two abutment plates 2, so that the sides of the two aluminum sheets are at the same height.

[0098] S3, Insert the welding rod into the strip insert for fixation;

[0099] First, insert the welding rod into the strip slot 8, and then press one end of the welding rod with the elastic pressure bar 33 to fix the welding rod. When the welding rod becomes shorter after use, the displacement clamp 32 is used to make the extended end of the welding rod longer. If the welding rod continues to shorten and the end of the extended end of the welding rod cannot reach the weld after the clamp 32 slides to the limit, the anti-slip push block 30 is pushed to make the entire telescopic rod 7 extend and move towards the weld, thereby further increasing the extension length of the extended end of the welding rod. After the welding rod is installed, one end of the welding rod extends out of the telescopic rod 7, and the end of the extended end of the welding rod is located above one end of the weld. When the moving seat 4 is displaced, it will drive the welding rod to move from one end of the weld to the other end of the weld, thereby filling the weld with the molten droplets formed after the welding rod melts.

[0100] S4, start motor 48 to drive the moving seat 4 to move, at which time the operator follows the rhythm of the welding rod swinging up and down to weld the weld between the two aluminum sheets.

[0101] After the motor 48 starts, it drives the threaded rod 46 to rotate slowly through the reduction gearbox 49. Since the fixed pin 47 connected to the slide rod 43 is threadedly engaged with the threaded rod 46, the slide rod 43 will slowly move horizontally within the sliding sleeve 42. This displacement of the slide rod 43 drives the movement of the movable seat 4. When the movable seat 4 moves, the rounded lower end of the sliding pin 9 will slide on the top of the strip base 3. Once the rounded lower end of the sliding pin 9 contacts the crest of the first wave-shaped protrusion 10, the sliding pin 9 will be pushed upward. At this time, the end of the rocker arm 5 that extends into the movable seat 4 will be pushed upward by the sliding pin 9. As the electrode is lifted, the protruding end of the electrode will swing downward, bringing it into contact with the weld. Since the first wavy protrusion 10 has a certain length, during the horizontal displacement of the moving seat 4, the end of the rocker arm 5 that extends into the moving seat 4 will be continuously driven up and down by the sliding pin 9. As the electrode moves along the weld, the protruding end of the electrode will continuously separate from and rejoin the weld. When the operator holds the welding torch 51 and heats the weld in rhythm with the electrode contacting the weld, uniform fish-scale weld spots will appear on the weld. At this point, the welding of the two aluminum sheets is complete.

[0102] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An aluminum welding device, characterized in that, The system includes a worktable (50), on which a dotted wire feeding mechanism, a drive mechanism, and two sets of aluminum sheet clamps symmetrical about the dotted wire feeding mechanism are provided. The top of the worktable (50) is formed with a support platform (1) for supporting two aluminum sheets. The support platform (1), the dotted wire feeding mechanism, and the drive mechanism are distributed sequentially along the length of the worktable (50). Each set of aluminum sheet clamps includes three sets of elastic abutting members corresponding to three sides of one of the aluminum sheets. Each set of elastic abutting members includes an abutting plate (2) that elastically abuts one side of the corresponding aluminum sheet. The dotted wire feeding mechanism includes a strip base (3), a movable seat (4), and a rocker arm (5). The strip base (3) is fixedly mounted on the worktable (50). The movable seat (4) is slidably connected to the strip base (3) and is hollow inside. The movable seat (4) faces the support platform (1). A strip support arm (6) is fixedly provided. The middle part of the rocker arm (5) is hinged to the strip support arm (6). One end of the rocker arm (5) extends into the movable seat (4). A telescopic rod (7) that can extend horizontally toward the support platform (1) is slidably connected to the rocker arm (5). A strip slot (8) for horizontal insertion of welding rod is provided in the telescopic rod (7). A vertical sliding pin (9) is provided in the movable seat (4). The sliding pin (9) is elastically connected to the movable seat (4). The sliding pin (9) is used to move up and down to drive the end of the rocker arm (5) that extends into the movable seat (4) to swing up and down. The lower end of the sliding pin (9) is round. The top of the strip base (3) is formed with a first wave pattern protrusion (10) that matches the lower end of the sliding pin (9) along its length direction. The driving mechanism is used to drive the movable seat (4) to move slowly along the length direction of the strip base (3) on the strip base (3).

2. The aluminum welding equipment according to claim 1, characterized in that, The movable seat (4) is a rectangular shell. The top of the movable seat (4) is open. A horizontal cover plate (11) is fixed on the open structure of the movable seat (4). A vertical cylindrical sleeve (12) is formed on the top of the cover plate (11). The top of the cylindrical sleeve (12) is open. A screw cap (13) is screwed on the open structure of the cylindrical sleeve (12). A limiting disc (14) is coaxially formed on the upper end of the sliding pin (9) and slides with the inner wall of the cylindrical sleeve (12). The lower end of the sliding pin (9) passes through the cover plate (11) and the movable seat (4) in sequence. A vertical No. 1 spring (15) is provided inside the cylindrical sleeve (12). The two ends of the No. 1 spring (15) abut against the bottom of the screw cap (13) and the top of the limiting disc (14) respectively.

3. The aluminum welding equipment according to claim 1, characterized in that, A pin (16) with an axial direction perpendicular to the axis of the pin (9) is fixed on the sliding pin (9). The end of the rocker arm (5) that extends into the movable seat (4) is formed with two support bars (17) that correspond one-to-one with the pin (16) along the length direction of the rocker arm (5). The sliding pin (9) is located between the two support bars (17). Each support bar (17) has a strip groove (18) along its length direction. The two ends of the pin (16) are slidably engaged with the two strip grooves (18) respectively. A vertical clearance groove (19) is provided on one side wall of the movable seat (4) to accommodate the vertical displacement of one end of the rocker arm (5).

4. The aluminum welding equipment according to claim 1, characterized in that, A rectangular through groove (20) is provided inside the rocker arm (5) along its length direction. A first strip-shaped notch (21) connected to the rectangular through groove (20) is provided at the top of the rocker arm (5) along its length direction. The telescopic rod (7) is movably disposed in the rectangular through groove (20). A sliding self-locking component is fixed at one end of the telescopic rod (7) near the moving seat (4). The sliding self-locking component includes a slider (22), a second spring (23), and two limit pins (24). The slider (22) is slidably disposed in the rectangular through groove (20). A receiving groove (25) is provided inward at the top of the slider (22). An installation plate (26) is covered on the receiving groove (25). A first columnar sliding groove (27) connected to the receiving groove (25) is provided on both sides of the slider (22). The two first columnar sliding grooves (27) are coaxial and axially aligned. Perpendicular to the length direction of the rectangular through groove (20), two limiting pins (24) are slidably disposed in two first columnar sliding grooves (27), and a second spring (23) is horizontally disposed in the receiving groove (25) and located between the two limiting pins (24). The two ends of the second spring (23) respectively abut against the ends of the two limiting pins (24) that extend into the receiving groove (25). The other end of each limiting pin (24) is rounded. The inner walls on both sides of the rectangular through groove (20) are formed with second wave-shaped protrusions (28) that respectively cooperate with the rounded ends of the two limiting pins (24). The top of the slider (22) is formed with a vertical guide part (29) that slides and cooperates with the first strip notch (21). The upper end of the vertical guide part (29) is formed with an anti-slip push block (30) located outside the rocker arm (5).

5. The aluminum welding equipment according to claim 1, characterized in that, The length direction of the strip slot (8) is consistent with the length direction of the telescopic rod (7). The top of the telescopic rod (7) has a second strip notch (31) connected to the strip slot (8) along its length direction. A clamping block (32) is slidably provided inside the strip slot (8). The upper half of the clamping block (32) gradually narrows and slides with the second strip notch (31). An elastic pressure strip (33) for fixing one end of the welding rod is formed on the upper half of the clamping block (32). Rubber strips (34) for increasing the sliding friction between the clamping block (32) and the strip slot (8) are fixed on both sides of the clamping block (32).

6. The aluminum welding equipment according to claim 1, characterized in that, Each set of resilient abutment components also includes: A strip-shaped fixing seat (35) is horizontally fixed on the top of the workbench (50), and a second columnar sliding groove (36) is opened inward at one end of the strip-shaped fixing seat (35); A circular plate (37) is fixedly mounted on the opening formed by the No. 2 columnar groove (36) at one end of the strip-shaped fixing seat (35); The sliding column (38) is horizontal, with a convex ring formed at one end that slides and engages with the inner wall of the second columnar sliding groove (36), and the other end extends horizontally out of the strip-shaped fixing seat (35) and toward the support platform (1). Spring No. 3 (39) is horizontally positioned in columnar groove No. 2 (36). The two ends of spring No. 3 (39) abut against the end of the slide column (38) with a convex ring and the circular plate (37), respectively. Each contact plate (2) is vertically fixed to the extended end of the slide column (38), and each contact plate (2) has an arc-shaped guide slide (40) formed at its upper end, and each contact plate (2) has a guide pulley (41) axially connected to the lower end of the worktable (50) for sliding cooperation.

7. The aluminum welding equipment according to claim 1, characterized in that, The drive mechanism includes: The sliding sleeve (42) is horizontally fixed on the strip base (3); A sliding rod (43) is slidably disposed within a sliding sleeve (42). One end of the sliding rod (43) is connected to a movable seat (4). Several limiting strips (44) are formed on the outer wall of the sliding rod (43) along its length. Several limiting grooves that cooperate with the limiting strips (44) are provided on the inner wall of the sliding sleeve (42). A third columnar sliding groove (45) is coaxially provided inside the sliding rod (43). The other end of the sliding rod (43) is an open structure that communicates with the third columnar sliding groove (45). The threaded rod (46) is horizontal, and one end of the threaded rod (46) extends into the No. 3 columnar groove (45); The fixing pin (47) is vertically fixed on the outer wall of the slide bar (43). The lower end of the fixing pin (47) is round and extends downward into the No. 3 columnar slide groove (45) to engage with the threaded rod (46). The motor (48) is fixed horizontally on the workbench (50), and the output shaft of the motor (48) is connected to the other end of the threaded rod (46) through the gearbox (49).

8. A process for an aluminum welding equipment, comprising the aluminum welding equipment as described in any one of claims 1-7, characterized in that, The process includes the following steps: S1. Before fixing the two aluminum sheets, grind the welded part of the two aluminum sheets to remove the oxide layer, and then dry the two aluminum sheets after grinding. S2, place the two dried aluminum sheets on the support (1) and fix them in place; S3, Insert the welding rod into the strip insert for fixation; S4, start the drive mechanism to move the moving seat (4) to a certain position. At this time, the operator follows the rhythm of the welding rod swinging up and down to weld the weld between the two aluminum sheets.

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