Hardware laser welding machine

Abstract

The present application relates to the field of laser welding, and specifically to a hardware laser welding machine, comprising a rotating table, the rotating table is placed with a bottom plate to be welded, the upper side of the bottom plate is placed with a round pipe to be welded; one side of the rotating table is provided with a welding assembly, the welding assembly comprises a guide rail, a sliding plate is slidably connected on the guide rail, and an electric push rod is arranged on the sliding plate; through the front and back adjustment of the sliding plate, the height adjustment of the guide rail, and the angle deflection adjustment of the swing block, the distance between the end of the laser welding gun and the welding point, the welding angle and the height adjustment are flexibly realized, so that the welding of three welds of A, B and C is smoothly completed, compared with the existing laser welding gun controlled by the mechanical arm device to perform welding, the hardware laser welding machine in the embodiment is relatively low in cost, and the subsequent maintenance and repair is also greatly reduced, and the structure is simple, easy to operate, and the execution logic is simple, and the needs of small enterprises or manufacturers can be met in all aspects.

Description

Technical Field

[0001] This invention relates to the field of laser welding, specifically a laser welding machine for hardware parts. Background Technology

[0002] Laser welding technology, characterized by its high welding speed and high production efficiency, has been widely used in many fields, such as automobile manufacturing, electronic components, biomedicine, aerospace, new energy, and hardware.

[0003] In the field of welding hardware components, some hardware components require multiple welding processes, that is, multiple welding passes are performed at a single welding point to improve the connection strength of the hardware component and enable it to be used in harsh environments with special high strength.

[0004] Current laser welding equipment, in conjunction with robotic arms, enables multi-dimensional welding operations, allowing multiple welds to be performed at a single welding point. However, the cost of these robotic arms is high, posing a significant challenge to the initial investment for many small businesses or manufacturers. They also carry operational risks; poor management, idle or depreciated robotic arms can increase operating costs for businesses.

[0005] Therefore, to address the above issues, a simple and low-cost laser welding machine for hardware parts was designed, which can also meet welding requirements. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the present invention provides a hardware laser welding machine, including a rotating table, a base plate to be welded placed on the rotating table, and a round tube to be welded to the base plate placed on top of the base plate. A welding assembly is provided on one side of the rotary table. The welding assembly includes a guide rail, a slide plate is slidably connected on the guide rail, an electric actuator is provided on the slide plate, the output end of the electric actuator points to the round tube, and a U-shaped plate is fixed to the output end of the electric actuator. The U-shaped plate slides against the upper surface of the slide plate. The two upper surfaces of the U-shaped plate have notches, with the sides of each notch higher than the middle. The skateboard is equipped with a tension spring, which is fixed between the two plates of the U-shaped plate. A swing block is fixed to the end of the tension spring. The lower surface of the swing block is provided with a bevel adapted to the shape of the notch. A laser welding gun is fixed to the swing block. Below the guide rail is a hydraulic rod that drives its up and down movement.

[0008] Preferably, the outer ring of the rotary table is provided with a toothed ring, and a gear meshes with the outer ring of the toothed ring. A base is provided below the rotary table, and the rotary table is rotatably connected to the base. The base and the rotating platform are connected in the middle. The inner circle of the rotating platform is equipped with multiple vertical guide rods, and the upper end of each guide rod is inclined towards the inner circle axis of the rotating platform.

[0009] Preferably, a horizontal plate is provided below the base, one end of the horizontal plate extends vertically upward and is fixedly connected to an inclined feeding plate, and the other end of the horizontal plate is fixedly connected to a connecting rod, the end of the connecting rod being fixedly connected to a sliding plate. Below the base, there is a second hydraulic rod. The output end of the second hydraulic rod is fixed to a support plate, and multiple push rods are fixed to the support plate. The push rods can pass through the top of the rotary table and push the welded base plate and round tube away from the rotary table.

[0010] Preferably, the two push rods near the feed plate include a slide rod and a sleeve. The lower end of the slide rod is slidably connected to the sleeve by a spring, and the lower end of the slide rod is symmetrically fixed with a limiting plate. The limiting plate can slide along the vertical hole opened on the outer ring of the sleeve.

[0011] Preferably, an induction heating plate is provided at the high position of the blanking plate, and the induction heating plate is used to heat the welding position between the base plate and the round tube.

[0012] Preferably, multiple spring clips are symmetrically arranged on the rotating table, and the spring clips are used to clamp and fix the base plate to be welded.

[0013] Preferably, multiple vertical rods are symmetrically fixed to the support plate, the vertical rods extend upward through the base, and the upper ends of the multiple vertical rods are jointly fixed to a ring body. The inner diameter of the ring body is the same as the inner diameter of the round tube to be welded, and the lower surface of the ring body is provided with multiple balls, which roll against the upper end face of the round tube.

[0014] Preferably, multiple grooves are evenly opened on the lower surface of the rotary table, the lower end of the guide rod is bent vertically and extends into the groove, and a push rod is fixed to the horizontal surface of the bent guide rod, with the push rod extending downwards from the rotary table. The lower surface of the rotary table is provided with a circular plate, on which multiple arc-shaped extrusion holes are evenly opened. The lower end of the push rod passes through the extrusion hole, and the lower end of the push rod is threaded with a fastening bolt.

[0015] Preferably, a groove is formed on the outer side wall of each guide rod, the groove is formed along the length of the guide rod, and a roller is rotatably connected in the groove.

[0016] Preferably, an oil injection hole is provided at the upper end of the guide rod, and the oil injection hole is connected to the groove.

[0017] The advantages of this invention are: 1. The hardware laser welding machine designed in this invention flexibly adjusts the distance between the laser welding gun tip and the welding point, as well as the welding angle and height, by adjusting the back and forth of the slide plate, the height of the guide rail, and the angle of the swing block. This allows for the successful completion of welding of three weld seams, A, B, and C. Compared with existing laser welding guns controlled by robotic arms, the hardware laser welding machine in this embodiment is lower in cost and significantly reduces subsequent maintenance and repair. It also features a simple structure, is easy to operate, and has a simple execution logic. Considering all aspects, it can meet the needs of small enterprises or manufacturers.

[0018] 2. In this invention, the induction heating plate is energized, and the rotating table drives the base plate and the round tube to rotate slowly. The induction heating plate heats the welding position between the round tube and the base plate to eliminate the internal stress of the round tube and the base plate, so as to prevent the base plate or the round tube from deforming during the welding process. Attached Figure Description

[0019] Figure 1 This is a first-view perspective perspective view of the laser welding machine for hardware parts in this invention; Figure 2 This is a second-view perspective perspective view of the laser welding machine for hardware parts in this invention; Figure 3 This is a front view of the laser welding machine for hardware parts in this invention; Figure 4 This is a third-view perspective view of the laser welding machine for hardware parts in this invention; Figure 5 This is a perspective view of the cooperation between the support plate and the vertical rod in this invention; Figure 6 This is a perspective view of the push rod in this invention; Figure 7 This is a first-view perspective perspective view of the rotary table in this invention; Figure 8 This is a second-view perspective perspective view of the rotary table in this invention; Figure 9 This is a perspective view of the mating of the rotary table and the base in this invention; Figure 10 This is a perspective view of the interaction between the circular plate and the rotary table in this invention; Figure 11 This is a front view of the rotary table in this invention; Figure 12 This is a bottom view of the circular plate in this invention; Figure 13 This is a perspective view of the base in this invention; Figure 14 This is a schematic diagram illustrating the cooperation between the horizontal plate and the sliding plate in this invention; Figure 15 This is a perspective view of the cooperation between the skateboard and the U-shaped plate in this invention; Figure 16 This is a perspective view of the interaction between the laser welding gun and the oscillating block in this invention; Figure 17 This is a schematic diagram illustrating the welding effect between the circular tube and the base plate in this invention.

[0020] In the diagram: 101, base plate; 102, round tube; 1, rotary table; 2, guide rail; 3, sliding plate; 4, electric actuator; 5, U-shaped plate; 6, notch; 7, tension spring; 8, swing block; 9, laser welding gun; 10, hydraulic rod No. 1; 11, gear ring; 12, gear; 13, base; 14, guide rod; 15, horizontal plate; 16, feeding plate; 17, connecting rod; 18, hydraulic rod No. 2; 19, support plate; 20, top rod; 21, top plate; 22, sliding rod; 23, sleeve; 24, spring; 25, limiting plate; 26, vertical hole; 27, induction heating plate; 28, spring piece; 29, vertical rod; 30, ring body; 31, ball bearing; 32, groove; 33, push rod; 34, round plate; 35, extrusion hole; 36, fastening nut; 37, roller body; 38, oil injection hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Reference Figure 1 - Figure 17 A laser welding machine for hardware components includes a rotary table 1, on which a base plate 101 to be welded is placed, and a round tube 102 to be welded is placed above the base plate 101. A welding assembly is provided on one side of the rotary table 1. The welding assembly includes a guide rail 2, on which a slide plate 3 is slidably connected. An electric push rod 4 is provided on the slide plate 3. The output end of the electric push rod 4 points to the round tube 102, and a U-shaped plate 5 is fixedly connected to the output end of the electric push rod 4. The U-shaped plate 5 slides against the upper surface of the slide plate 3. Notches 6 are opened on the upper surfaces of the two plates of the U-shaped plate 5. The two sides of each notch 6 are higher and the middle is lower. A tension spring 7 is provided on the slide plate 3. The tension spring 7 is fixed between the two plates of the U-shaped plate 5, and a swing block 8 is fixedly connected to the end of the tension spring 7. The lower surface of the swing block 8 is provided with an inclined surface adapted to the shape of the notch 6. A laser welding gun 9 is fixedly connected to the swing block 8. A first hydraulic rod 10 is provided below the guide rail 2 to drive its up and down movement. In this embodiment, the designed hardware laser welding machine is used to weld objects such as... Figure 7 and Figure 9 As shown, a base plate 101 with holes and a round tube 102 are provided. One end of the round tube 102 is welded to the base plate 101, and the round tube 102 is welded coaxially with the holes on the base plate 101. The desired final welding effect is as follows Figure 17As shown, welds A, B and C are stacked together in sequence to improve the welding strength between the round tube 102 and the base plate 101; The rotary table 1 is driven by an external motor and can rotate; the guide rail 2 is equipped with a lead screw, which is driven by an external motor. The motor can drive the lead screw to rotate forward and backward, and the lead screw is threadedly connected to the slide plate 3, so that the slide plate 3 can move back and forth along the guide rail 2. The specific operation process of this laser welding machine for hardware parts is as follows: Loading: Place the base plate 101 flat on the rotating table 1, and then place the round tube 102. The inner diameter of the round tube 102 is the same as the inner diameter of the hole on the base plate 101. Welding, welding of weld A: The motor drives the lead screw to rotate, the lead screw pushes the guide rail 2 close to the round tube 102, and then drives the first hydraulic rod 10 to move the entire guide rail 2 down. At this time, the end of the laser welding gun 9 is tilted to point to the gap between the round tube 102 and the base plate 101, and drives the rotary table 1 to rotate slowly, and then welds weld A. For welding of weld B, after the rotary table 1 rotates one revolution, it pauses and drives the electric push rod 4. The electric push rod 4 drives the U-shaped plate 5 to move closer to the round tube 102. The notch 6 on the U-shaped plate 5 will squeeze the swing block 8. Since the lower surface of the swing block 8 is connected to the slide plate 3 through the tension spring 7, the swing block 8 will tilt towards the round tube 102. At the same time, the swing block 8 drives the end of the laser welding gun 9 to tilt downward. The end of the laser welding gun 9 points to the position of weld B to be welded. Then, the distance between the end of the laser welding gun 9 and the weld B to be welded is adjusted by the movement of the slide plate 3 and the height of the slide rail. Finally, the rotary table 1 is driven to rotate slowly, and then the weld B is welded. The welding of C-seam is paused after the rotary table 1 rotates one revolution. The electric push rod 4 is driven, which moves the U-shaped plate 5 away from the round tube 102. The notch 6 on the U-shaped plate 5 will squeeze the swing block 8. Since the lower surface of the swing block 8 is connected to the slide plate 3 through the tension spring 7, the swing block 8 will tilt away from the round tube 102. At the same time, the swing block 8 drives the end of the laser welding gun 9 to swing upward. The end of the laser welding gun 9 points to the position of the C-seam to be welded. Then, the distance between the end of the laser welding gun 9 and the B-seam to be welded is adjusted by the movement of the slide plate 3 and the height of the guide rail 2. Finally, the rotary table 1 is driven to rotate slowly, and then the C-seam welding is performed. After the material is unloaded and the three welds A, B and C are completed, the electric actuator 4 drives the U-shaped plate 5 to reset, and at the same time the first hydraulic rod 10 drives the entire guide rail 2 to move upward and reset. The lead screw drives the slide plate 3 to move backward away from the round tube 102. Then the welded base plate 101 and the round tube are removed. The subsequent feeding, welding, and unloading can be repeated. As for the welding process, the motor that drives the lead screw to rotate, the hydraulic rod 10 that drives the guide rail 2 to move up and down, the electric push rod 4 that drives the U-shaped plate 5 to move back and forth, the motor that drives the rotary table 1 to rotate intermittently, and the laser welding gun 9 can all be controlled by the central control system in the background through the programmed program and carried out in sequence according to the execution logic. It will not be described in detail here. In this embodiment, the designed metal laser welding machine flexibly adjusts the distance between the end of the laser welding gun 9 and the welding point, as well as the welding angle and height, through the forward and backward adjustment of the slide plate 3, the height adjustment of the guide rail 2, and the angle swing adjustment of the swing block 8. This allows for the successful completion of welding of three weld seams, A, B, and C. Compared with existing welding machines that control the laser welding gun 9 using robotic arms, the metal laser welding machine in this embodiment is lower in cost and significantly reduces subsequent maintenance and repair costs. It also features a simple structure, is easy to operate, and has a simple execution logic. Considering all aspects, it can meet the needs of small businesses or manufacturers.

[0023] Reference Figure 1 - Figure 12 The outer ring of the rotating platform 1 is provided with a toothed ring 11, and a gear 12 meshes with the outer ring of the toothed ring 11. The base 13 is provided below the rotating platform 1, and the rotating platform 1 is rotatably connected to the base 13. The base 13 and the rotating platform 1 are connected through the middle part. The rotating platform 1 has multiple vertical guide rods 14 arranged in a circular array on the inner circle. The upper end of each guide rod 14 is inclined towards the inner circle axis of the rotating platform 1. Considering the welding between the circular tube 102 and the base plate 101, the axis of the circular tube 102 and the axis of the hole on the base plate 101 need to be aligned to form a strong weld. This also prevents misalignment between the inner ring of the circular tube 102 and the hole on the base plate 101, which could affect the smooth flow of the medium within it, or cause scratch damage to the cable surface due to the step created by misalignment when the cable is threaded through it. Therefore, this embodiment includes a guide rod 14. The lower end of the guide rod 14 is connected to the inner ring of the rotary table 1 and rotates synchronously with the rotary table 1. The upper end of the guide rod 14 is inclined towards the axis of the rotary table 1. During loading, the base plate 101 is placed first, the guide rod 14 passes through the hole on the base plate 101 and is attached to the inner wall of the hole. Then the round tube 102 is placed, the inner wall of the round tube 102 is attached to the guide rod 14, and it moves down to sit on the base plate 101. At this time, the axis of the hole on the base plate 101 and the axis of the round tube 102 tend to be coaxial, ensuring that the lower end of the round tube 102 can fully coincide with the upper surface of the base plate 101, reducing the problem of incomplete welding in the subsequent welding process. In this embodiment, the base 13 provides a stable rotating platform for the rotary table 1. The rotating shaft of the gear 12 passes through the base 13 downward and is connected to the output end of an external motor. The gear 12 meshes with the gear ring 11, and the gear ring 11 drives the rotary table 1 to rotate smoothly and slowly on the base 13, providing a stable welding environment for the welding process.

[0024] Reference Figure 1 - Figure 15 A horizontal plate 15 is provided below the base 13. One end of the horizontal plate 15 extends vertically upward and is fixedly connected to an inclined feeding plate 16. The other end of the horizontal plate 15 is fixedly connected to a connecting rod 17, and the end of the connecting rod 17 is fixedly connected to the slide plate 3. Below the base 13, there is also a second hydraulic rod 18. The output end of the second hydraulic rod 18 is fixed to a support plate 19. Multiple push rods 20 are fixed to the support plate 19. The push rods 20 can penetrate through the top of the rotating table 1 and push the welded base plate 101 and round tube 102 away from the rotating table 1. After the welding of the three seams A, B and C is completed, the slide plate 3 moves away from the round tube 102 and resets. At the same time, the slide plate 3 drives the horizontal plate 15 under the base 13 to move. The horizontal plate 15 is supported under the base 13 by multiple top plates 21, and the horizontal plate 15 can slide on the top plates 21. The horizontal plate 15 moves with the sliding plate 3, and simultaneously the horizontal plate 15 drives the unloading plate 16 to approach the round tube 102. Then, the second hydraulic rod 18 pushes the support plate 19 upward. The support plate 19 drives multiple push rods 20 to move upward and push against the lower surface of the base plate 101, pushing the base plate 101 and the round tube 102 upward, so that the base plate 101 and the round tube 102 are both separated from the guide rod 14. Then, the round tube 102 is easily pushed, and the round tube 102 and the base plate 101 are pushed onto the unloading plate 16, realizing... Material unloading operation: After the round tube 102 and the base plate 101 are welded, the high temperature generated by the welding is transferred to the upper part of the round tube 102. If it is lifted directly from the top, the contact time with the round tube 102 will be longer, which may cause burns. However, by lifting the base plate 101 and the round tube 102 upwards, the material can be easily pushed out, and the contact time with the round tube 102 will be shorter, reducing the possibility of burns. After the material unloading is completed, the new base plate 101 and the round tube 102 can be loaded onto the rotary table 1.

[0025] Reference Figure 1 - Figure 12 The two push rods 20 near the feed plate 16 include a slide rod 22 and a sleeve 23. The lower end of the slide rod 22 is slidably connected to the sleeve 23 by a spring 24, and the lower end of the slide rod 22 is symmetrically fixed with a limiting plate 25. The limiting plate 25 can slide along the vertical hole 26 opened on the outer ring of the sleeve 23. The support plate 19 drives the push rod 20 to move upward. The push rod 20 passes through the rotary table 1 and pushes against the bottom plate 101 and the round tube 102, pushing the round tube 102 and the bottom plate 101 upward away from the guide rod 14. Then the support plate 19 continues to move upward. At this time, the two push rods 20 near the unloading plate 16 fail to effectively push against the bottom plate 101. The push rod 20 near the bottom plate 101 is stopped by the limiting plate 25 against the lower surface of the rotary table 1, and the upward movement of the slide rod 22 is restricted, confined to the slide rod 2. 2. The base plate 101 and the round tube 102 are pushed off the guide rod 14, while the push rod 20 away from the unloading plate 16 can still move up and down. At this time, the base plate 101 and the round tube 102 can be tilted, so that the unloading plate 16 of the round tube 102 is tilted. Finally, the welded round tube 102 and the base plate 101 are tilted and fall into the unloading plate 16, and automatic unloading is achieved. After unloading is completed, the support plate 19 is moved down and reset, and all the push rods 20 are moved down to the bottom of the rotary table 1. The top round tube 102 and the bottom plate 101 tilt and fall onto the unloading plate 16, realizing automatic unloading without the need for manual intervention in the unloading process, reducing manual involvement and improving efficiency and safety.

[0026] Reference Figure 1 - Figure 7 An induction heating plate 27 is provided at a high position of the blanking plate 16. The induction heating plate 27 is used to heat the welding position between the base plate 101 and the round tube 102. The induction heating plate 27 designed in this embodiment is a heating plate formed by winding an induction coil and is adapted to the outer surface shape of the round tube 102. After the new base plate 101 and the round tube 102 are loaded onto the rotary table 1, the induction heating plate 27 is energized. At the same time, the rotary table 1 drives the base plate 101 and the round tube 102 to rotate slowly. The induction heating plate 27 heats the welding position between the round tube 102 and the base plate 101 to eliminate the internal stress of the round tube 102 and the base plate 101, so as to prevent the base plate 101 or the round tube 102 from deforming during the welding process. The induction heating plate 27 is mounted on the unloading plate 16 and can move with the unloading plate 16. After the unloading is completed, the new base plate 101 and the round tube 102 are loaded onto the rotary table 1. The slide plate 3 moves away from the round tube 102 again. At this time, the slide plate 3 drives the unloading plate 16 to approach the round tube 102 again. The unloading plate 16 also drives the induction heating plate 27 to approach the welding position between the round tube 102 and the base plate 101. The rotary table 1 rotates, and the induction heating plate 27 heats the welding position. After heating is completed, welding is performed. The slide plate 3 drives the laser welding gun 9 to move towards the round tube 102. At the same time, the unloading plate 16 and the induction heating plate 27 move away from the round tube 102.

[0027] Reference Figure 1 - Figure 11 Multiple spring pieces 28 are symmetrically arranged on the rotary table 1. The spring pieces 28 are used to clamp and fix the base plate 101 to be welded. Place the base plate 101 on the rotary table 1, pass the guide rod 14 through the hole on the base plate 101, and press down on the base plate 101 to fasten the edge of the base plate 101 between the spring pieces 28. This indicates that the base plate 101 has been installed in place, that is, the base plate 101 is completely seated on the rotary table 1, so as to prevent the base plate 101 from being suspended above the rotary table 1 and affecting the subsequent adjustment of the end position of the laser welding gun 9. In addition, the spring pieces 28 are set to rotate synchronously with the rotary table 1. When the round tube 102 is heated by the induction heating plate 27, the upper edge of the spring piece 28 is lower than the induction heating plate 27 and will not interfere with the induction heating plate 27.

[0028] Reference Figure 1 - Figure 13 Multiple vertical rods 29 are symmetrically fixed on the support plate 19. The vertical rods 29 extend upward through the base 13. The upper ends of the multiple vertical rods 29 are all fixed with a ring body 30. The inner diameter of the ring body 30 is the same as the inner diameter of the round tube 102 to be welded. Multiple balls 31 are provided on the lower surface of the ring body 30. The balls 31 are attached to the upper end face of the round tube 102 and roll. Some thinner base plates 101 are slightly deformed, preventing them from fully adhering to the rotary table 1 and from completely fitting tightly against the lower end of the circular tube 102, leaving some gaps. To address this, a ring 30 is provided to press down on the circular tube 102. The second hydraulic rod 18 moves the support plate 19 downwards, which in turn moves multiple vertical rods 29 downwards. Simultaneously, the vertical rods 29 press the ring 30 against the upper end face of the circular tube 102. The pressure applied to the circular tube 102 also acts on the base plate 101, causing it to... The ring is pressed firmly onto the rotary table 1, flattening the base plate 101. At the same time, the gap between the round tube 102 and the base plate 101 is also pressed out, which helps to improve the welding quality. Considering the extrusion friction between the ring 30 and the round tube 102, a ball bearing 31 is provided on the lower surface of the ring 30 to convert the sliding friction between the ring 30 and the round tube 102 into rolling friction between the ball bearing 31 and the round tube 102. This reduces the relative rotational resistance between the ring 30 and the round tube 102 and does not affect the rotation of the round tube 1 with the rotary table 1.

[0029] Reference Figure 1 - Figure 12 Multiple grooves 32 are evenly opened on the lower surface of the rotary table 1. The lower end of the guide rod 14 is bent vertically and extends into the groove 32. A push rod 33 is fixed to the horizontal plane of the bend of the guide rod 14. The push rod 33 extends downwards from the rotary table 1. The lower surface of the rotary table 1 is provided with a circular plate 34, and multiple arc-shaped extrusion holes 35 are evenly opened on the circular plate 34. The lower end of the push rod 33 passes through the extrusion hole 35, and the lower end of the push rod 33 is threadedly connected with a fastening nut 36. The inner diameter of the round tube 102 and the inner diameter of the hole on the base plate 101 have various specifications. In order to enable the guide rod 14 to support hardware parts of different diameters, the diameter of the circle enclosed by the guide rod 14 is set to be adjustable. That is, in this embodiment, by rotating the round plate 34, the pressing hole 35 on the round plate 34 will press the push rod 33, causing the push rod 33 to move away from the axis of the rotating table 1, thereby increasing the diameter of the circle enclosed by the guide rod 14. Alternatively, the pressing hole 35 on the round plate 34 will press the push rod 33, causing the push rod 33 to move closer to the axis of the rotating table 1, thereby reducing the diameter of the circle enclosed by the guide rod 14. This enables the support and expansion of hardware parts of different specifications. After rotating the round plate 34, tightening one of the fastening nuts 36 can fix the round plate 34, which can also fix all the guide rods 14.

[0030] Reference Figure 1 - Figure 11 Each guide rod 14 has a groove on its outer side wall, the groove is opened along the length of the guide rod 14, and a roller 37 is rotatably connected in the groove; The diameter of the circle formed by the outer walls of the multiple guide rods 14 is slightly larger than the diameter of the hole on the base plate 101 and the inner circle of the round tube 102. The multiple guide rods 14 are in an interference fit with the hole on the base plate 101 and the inner circle of the round tube 102. This is equivalent to the size of the hole being smaller than the size of the shaft. The interference fit between the two is necessary to expand and compress the round tube 102 and the base plate 101 to stabilize them. At the same time, it makes the axis of the round tube 102 and the axis of the hole on the base plate 101 tend to be in a co-linear state. However, the interference fit will affect the smoothness of feeding materials to the base plate 101 and the round tube 102. Therefore, a roller 37 is provided on the outer wall of each guide rod 14. The surface of the roller 37 protrudes from the outer wall of the guide rod 14 and can directly contact the inner wall of the hole on the base plate 101 and the inner wall of the round tube 102, thereby improving the smoothness of feeding and unloading materials to the base plate 101 and the round tube 102.

[0031] Reference Figure 1 - Figure 11 An oil injection hole 38 is provided at the upper end of the guide rod 14, and the oil injection hole 38 is connected to the groove. When the heating base plate 101 heats the round tube 102, the round tube 102 heats up, and the heat radiates to the guide rod 14, which will accelerate the evaporation of the lubricating oil in the groove. At this time, it is necessary to replenish the lubricating oil in time to reduce the wear of the roller body 37. Therefore, an oil injection hole 38 is provided at the upper end of each guide rod 14. When lubricating oil is added into the oil injection hole 38, the lubricating oil will flow down along the groove and quickly cover the surface of the groove and the surface of the roller body 37, so as to fully lubricate and protect the roller body 37.

[0032] Working principle: The specific operation process of this metal laser welding machine is as follows: Loading: Place the base plate 101 flat on the rotating table 1, and then place the round tube 102. The inner diameter of the round tube 102 is the same as the inner diameter of the hole on the base plate 101. Welding, welding of weld A: The motor drives the lead screw to rotate, the lead screw pushes the guide rail 2 close to the round tube 102, and then drives the first hydraulic rod 10 to move the entire guide rail 2 down. At this time, the end of the laser welding gun 9 is tilted to point to the gap between the round tube 102 and the base plate 101, and drives the rotary table 1 to rotate slowly, and then welds weld A. For welding of weld B, after the rotary table 1 rotates one revolution, it pauses and drives the electric push rod 4. The electric push rod 4 drives the U-shaped plate 5 to move closer to the round tube 102. The notch 6 on the U-shaped plate 5 will squeeze the swing block 8. Since the lower surface of the swing block 8 is connected to the slide plate 3 through the tension spring 7, the swing block 8 will tilt towards the round tube 102. At the same time, the swing block 8 drives the end of the laser welding gun 9 to tilt downward. The end of the laser welding gun 9 points to the position of weld B to be welded. Then, the distance between the end of the laser welding gun 9 and the weld B to be welded is adjusted by the movement of the slide plate 3 and the height of the slide rail. Finally, the rotary table 1 is driven to rotate slowly, and then the weld B is welded. The welding of C-seam is paused after the rotary table 1 rotates one revolution. The electric push rod 4 is driven, which moves the U-shaped plate 5 away from the round tube 102. The notch 6 on the U-shaped plate 5 will squeeze the swing block 8. Since the lower surface of the swing block 8 is connected to the slide plate 3 through the tension spring 7, the swing block 8 will tilt away from the round tube 102. At the same time, the swing block 8 drives the end of the laser welding gun 9 to swing upward. The end of the laser welding gun 9 points to the position of the C-seam to be welded. Then, the distance between the end of the laser welding gun 9 and the B-seam to be welded is adjusted by the movement of the slide plate 3 and the height of the guide rail 2. Finally, the rotary table 1 is driven to rotate slowly, and then the C-seam welding is performed. After the material is unloaded and the three welds A, B and C are completed, the electric actuator 4 drives the U-shaped plate 5 to reset, and at the same time the first hydraulic rod 10 drives the entire guide rail 2 to move upward and reset. The lead screw drives the slide plate 3 to move backward away from the round tube 102. Then the welded base plate 101 and the round tube are removed. The subsequent feeding, welding, and unloading can be repeated. As for the welding process, the motor that drives the lead screw to rotate, the hydraulic rod 10 that drives the guide rail 2 to move up and down, the electric push rod 4 that drives the U-shaped plate 5 to move back and forth, the motor that drives the rotary table 1 to rotate intermittently, and the laser welding gun 9 can all be controlled by the central control system in the background through the programmed program and carried out in sequence according to the execution logic. It will not be described in detail here. In this embodiment, the designed metal laser welding machine flexibly adjusts the distance between the end of the laser welding gun 9 and the welding point, as well as the welding angle and height, through the forward and backward adjustment of the slide plate 3, the height adjustment of the guide rail 2, and the angle swing adjustment of the swing block 8. This allows for the successful completion of welding of three weld seams, A, B, and C. Compared with existing welding machines that control the laser welding gun 9 using robotic arms, the metal laser welding machine in this embodiment is lower in cost and significantly reduces subsequent maintenance and repair costs. It also features a simple structure, is easy to operate, and has a simple execution logic. Considering all aspects, it can meet the needs of small businesses or manufacturers.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding machine for hardware parts, characterized in that: It includes a rotating table, on which a base plate to be welded is placed, and on top of the base plate a round pipe to be welded. A welding assembly is provided on one side of the rotary table. The welding assembly includes a guide rail, a slide plate is slidably connected on the guide rail, an electric actuator is provided on the slide plate, the output end of the electric actuator points to the round tube, and a U-shaped plate is fixed to the output end of the electric actuator. The U-shaped plate slides against the upper surface of the slide plate. The two upper surfaces of the U-shaped plate have notches, with the sides of each notch higher than the middle. The skateboard is equipped with a tension spring, which is fixed between the two plates of the U-shaped plate. A swing block is fixed to the end of the tension spring. The lower surface of the swing block is provided with a bevel adapted to the shape of the notch. A laser welding gun is fixed to the swing block. Below the guide rail is a hydraulic rod that drives its up and down movement; The outer ring of the rotary table is provided with a gear ring, and a gear meshes with the outer ring of the gear ring. A base is provided below the rotary table, and the rotary table is rotatably connected to the base. The base and the rotating platform are connected in the middle. The inner circle of the rotating platform is equipped with multiple vertical guide rods, and the upper end of each guide rod is inclined towards the inner circle axis of the rotating platform. A horizontal plate is provided below the base. One end of the horizontal plate extends vertically upward and is fixed to an inclined feeding plate. A connecting rod is fixed to the other end of the horizontal plate, and the end of the connecting rod is fixed to the slide plate. Below the base, there is also a second hydraulic rod. The output end of the second hydraulic rod is fixed to a support plate. Multiple push rods are fixed to the support plate. The push rods can penetrate through the top of the rotating table and push the welded base plate and round tube away from the rotating table. The two push rods near the feed plate include a slide rod and a sleeve. The lower end of the slide rod is slidably connected to the sleeve by a spring, and the lower end of the slide rod is symmetrically fixed with a limit plate. The limit plate can slide along the vertical hole opened on the outer ring of the sleeve.

2. The hardware laser welding machine according to claim 1, characterized in that: An induction heating plate is installed at the high position of the blanking plate. The induction heating plate is used to heat the welding position between the base plate and the round tube.

3. The hardware laser welding machine according to claim 1, characterized in that: Multiple spring clips are symmetrically arranged on the rotating platform. The spring clips are used to clamp and fix the base plate to be welded.

4. A laser welding machine for hardware parts according to claim 1, characterized in that: Multiple vertical rods are symmetrically fixed to the support plate, and the vertical rods extend upward through the base. The upper ends of the multiple vertical rods are all fixed to a ring. The inner diameter of the ring is the same as the inner diameter of the round tube to be welded. The lower surface of the ring is provided with multiple balls, which roll against the upper end face of the round tube.

5. A laser welding machine for hardware parts according to claim 3, characterized in that: Multiple grooves are evenly opened on the lower surface of the rotary table. The lower end of the guide rod is bent vertically and extends into the groove. A push rod is fixed to the horizontal surface of the bent guide rod, and the push rod extends downwards from the rotary table. The lower surface of the rotary table is provided with a circular plate, on which multiple arc-shaped extrusion holes are evenly opened. The lower end of the push rod passes through the extrusion hole, and the lower end of the push rod is threaded with a fastening bolt.

6. A laser welding machine for hardware parts according to claim 5, characterized in that: A groove is formed on the outer side wall of each guide rod, the groove is formed along the length of the guide rod, and a roller is rotatably connected in the groove.

7. A laser welding machine for hardware parts according to claim 6, characterized in that: An oil injection hole is provided at the upper end of the guide rod, and the oil injection hole is connected to the groove.

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