Hardware laser welding machine

Abstract

The invention relates to the field of laser welding, in particular to a hardware laser welding machine which comprises a rotating table, a bottom plate to be welded is placed on the rotating table, and a round pipe to be welded with the bottom plate is placed above the bottom plate; a welding assembly is arranged on one side of the rotating table and comprises a guide rail, a sliding plate is slidably connected to the guide rail, and an electric push rod is arranged on the sliding plate; by means of front-back adjustment of the sliding plate, height adjustment of the guide rail and angle deflection adjustment of the swing block, adjustment of the distance between the end of the laser welding gun and a welding point, the welding angle and the height is flexibly achieved, and therefore welding of a welding seam A, a welding seam B and a welding seam C is smoothly completed. According to the hardware laser welding machine, the cost is relatively low, meanwhile, the follow-up maintenance and repair can be greatly reduced, meanwhile, the structure is simple, operation is easy, the execution logic is simple, multiple aspects are comprehensively considered, and the requirements of small enterprises or manufacturers can be met.

Description

Technical Field

[0001] The invention relates to the field of laser welding, in particular to a hardware laser welding machine. Background Art

[0002] Laser welding technology has the characteristics of fast welding speed and high production efficiency. It has been widely used in many fields, such as automobile manufacturing, electronic components, biomedicine, aerospace, new energy and hardware workpieces.

[0003] In the field of welding hardware workpieces, some hardware workpieces need to be welded multiple times, that is, multiple welds are performed at one welding position to improve the connection strength of the hardware workpiece so that it can be used in special high-intensity harsh environments.

[0004] Current laser welding equipment, combined with robotic arm equipment, can achieve multi-dimensional welding operations and perform multiple welds at one welding location. However, the cost of the robotic arm equipment is relatively high, which is a huge test for the initial investment of many small businesses or manufacturers. It also carries operational risks. Poor operation management and idle or depreciated robotic arm equipment will increase the operating costs of the enterprise.

[0005] Therefore, in response to the above problems, a hardware laser welding machine with simple structure and low cost is designed, which can also meet the welding needs. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the hardware laser welding machine described in the present invention comprises a rotating table, on which a base plate to be welded is placed, and above the base plate a round tube to be welded is placed; A welding assembly is provided on one side of the rotating table. The welding assembly includes a guide rail, a slide is slidably connected to the guide rail, an electric push rod is provided on the slide, the output end of the electric push rod points to the round tube, and a U-shaped plate is fixed to the output end of the electric push rod. The U-shaped plate is attached to the upper surface of the slide and slides; The upper surfaces of the two plates of the U-shaped plate are provided with notches, with the two sides of each notch positioned higher and the middle position lower; A tension spring is provided on the slide plate, which is fixed between the two plates of the U-shaped plate, and a swing block is fixed to the end of the tension spring. The lower surface of the swing block is provided with an inclined surface that adapts to the shape of the notch, and a laser welding gun is fixed to the swing block. A hydraulic rod is provided below the guide rail to drive it to move up and down.

[0008] Preferably, the outer ring of the rotating table is provided with a gear ring, the outer ring of the gear ring is meshed with a gear, a base is provided below the rotating table, and the rotating table is rotatably connected to the base; The middle part of the base and the rotating table is penetrated, and a plurality of vertical guide rods are arranged in a circular array on the inner circle of the rotating table, and the upper end of each guide rod is inclined toward the axis direction of the inner circle of the rotating table.

[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 obliquely arranged blanking plate, and the other end of the horizontal plate is fixedly connected to a connecting rod, the end of the connecting rod is fixedly connected to the slide plate; A No. 2 hydraulic rod is also provided under the base. The output end of the No. 2 hydraulic rod is fixedly connected to a support plate, and a plurality of push rods are fixedly connected to the support plate. The push rods can pass through the top of the turntable and push the welded bottom plate and round tube up and off the turntable.

[0010] Preferably, the two push rods close to the blanking plate include a slide rod and a sleeve. The lower end of the slide rod is slidably connected to the sleeve through a spring, and the lower end of the slide rod is symmetrically fixed to a limit plate, which can slide along the vertical hole opened on the outer ring of the sleeve.

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

[0012] Preferably, a plurality of spring plates are symmetrically provided on the rotating table, and the spring plates are used to clamp and fix the base plate to be welded.

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

[0014] Preferably, a plurality of chute grooves are evenly formed on the lower surface of the rotating table, the lower end of the guide rod is bent vertically and extends into the chute, and a push rod is fixed to the bent horizontal surface of the guide rod, and the push rod extends below the rotating table; A circular plate is provided on the lower surface of the rotating table, and a plurality of arc-shaped extrusion holes are evenly opened on the circular plate. The lower end of the push rod passes through the extrusion hole, and the lower end of the push rod is threadedly connected with a fastening bolt.

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

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

[0017] The present invention is beneficial in that: 1. The hardware laser welding machine designed in the present invention can flexibly adjust the distance between the end of the laser welding gun and the welding point, the welding angle and the height by adjusting the front and rear of the slide plate, adjusting the height of the guide rail, and adjusting the angle of the swing block, thereby successfully completing the welding of the three welds A, B and C. Compared with the existing method of controlling the laser welding gun to perform welding by a robotic arm device, the hardware laser welding machine in this embodiment is relatively low in cost and can also greatly reduce the subsequent maintenance and repair. At the same time, it has a simple structure, is easy to operate, has a simple execution logic, and can meet the needs of small enterprises or manufacturers by comprehensive consideration of many aspects.

[0018] 2. In the present invention, the induction heating plate is designed to be energized, and the rotating table drives the base plate and the round tube to rotate slowly. The induction heating plate heats the welding position of the round tube and the base plate to eliminate the internal stress of the round tube and the base plate, so as to avoid deformation of the base plate or the round tube during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a first-perspective stereoscopic view of the hardware laser welding machine of the present invention; Figure 2 This is a second perspective view of the hardware laser welding machine of the present invention; Figure 3 This is a front view of the hardware laser welding machine of the present invention; Figure 4 This is a third-angle perspective diagram of the hardware laser welding machine of the present invention; Figure 5 This is a three-dimensional diagram of the cooperation between the support plate and the vertical rod in the present invention; Figure 6 A perspective view of the ejector pin of the present invention; Figure 7 This is a first-perspective stereoscopic view of the rotating platform of the present invention; Figure 8 A second perspective view of the rotating platform of the present invention; Figure 9 A three-dimensional diagram of the cooperation between the rotating table and the base in the present invention; Figure 10 A three-dimensional diagram of the cooperation between the circular plate and the rotating table in the present invention; Figure 11 It is a front view of the rotating platform of the present invention; Figure 12 A bottom view of the circular plate of the present invention; Figure 13 is a three-dimensional diagram of the base in the present invention; Figure 14 Schematic diagram of the cooperation between the transverse board and the sliding board in the present invention; Figure 15 A three-dimensional diagram of the cooperation between the slide plate and the U-shaped plate in the present invention; Figure 16 A three-dimensional diagram of the cooperation between the laser welding gun and the swing block in the present invention; Figure 17 This is a schematic diagram showing the welding effect of the round tube and the bottom plate in the present invention.

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

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] Reference Figure 1 - Figure 17 , a hardware laser welding machine includes a rotating table 1, on which a base plate 101 to be welded is placed, and above the base plate 101 a round tube 102 to be welded is placed; a welding assembly is provided on one side of the rotating table 1, and the welding assembly includes a guide rail 2, on which a slide plate 3 is slidably connected, and 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 the output end of the electric push rod 4 is fixedly connected to a U-shaped plate 5, which is attached to the upper surface of the slide plate 3 and slides; a notch 6 is provided on the upper surface of the two plates of the U-shaped plate 5, and each notch 6 is positioned high on both sides and low in the middle; a tension spring 7 is provided on the slide plate 3, which is fixed between the two plates of the U-shaped plate 5, and the end of the tension spring 7 is fixedly connected to a swing block 8, and the lower surface of the swing block 8 is provided with an inclined surface that adapts to the shape of the notch 6, and a laser welding gun 9 is fixed on the swing block 8; a hydraulic rod 10 for driving it to move up and down is provided below the guide rail 2; In this embodiment, the hardware laser welding machine is designed to weld objects such as Figure 7 and Figure 9 As shown in FIG, a bottom plate 101 with a hole and a round tube 102 are welded to one end of the round tube 102 on the bottom plate 101, and the round tube 102 is welded coaxially with the hole on the bottom plate 101; The final effect of welding is as follows Figure 17As shown, the three welds A, B and C are stacked together in sequence to improve the welding firmness between the round tube 102 and the bottom plate 101; The rotating platform 1 is driven by an external motor and can realize the rotation of the rotating platform 1; a screw rod is provided in the guide rail 2, and the screw rod is driven by an external motor. The motor can drive the screw rod to rotate forward and reverse, and the screw rod 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 the hardware 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 screw to rotate, the screw pushes the guide rail 2 close to the round tube 102, and then drives the No. 1 hydraulic rod 10 to move the entire guide rail 2 downward. 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 the welding of weld A is carried out; For welding of weld seam B, the rotary table 1 is paused after rotating one circle, and the electric push rod 4 is driven. The electric push rod 4 drives the U-shaped plate 5 to move toward the direction of the round tube 102, and 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 toward the direction of the round tube 102. At the same time, the swing block 8 drives the end of the laser welding gun 9 to tilt downward, and the end of the laser welding gun 9 points to the position of weld seam B to be welded. Then, the distance between the end of the laser welding gun 9 and weld seam B to be welded is adjusted by moving the slide plate 3 and the height of the slide rail. Finally, the rotary table 1 is driven to rotate slowly, and then weld seam B is welded. For welding of weld seam C, the rotary table 1 is paused after rotating one circle, and the electric push rod 4 is driven. The electric push rod 4 drives the U-shaped plate 5 to move away from the round tube 102, and 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 deflect upward, and the end of the laser welding gun 9 points to the position of weld seam C to be welded. Then, the distance between the end of the laser welding gun 9 and weld seam B to be welded is adjusted by moving the slide plate 3 and the height of the guide rail 2. Finally, the rotary table 1 is driven to rotate slowly, and then weld seam C is welded. After the three welds A, B and C are welded, the electric push rod 4 drives the U-shaped plate 5 to reset. At the same time, the No. 1 hydraulic rod 10 drives the entire guide rail 2 to move up and reset. The screw drives the slide 3 to retreat away from the round tube 102. After that, the welded bottom plate 101 and the cylinder are removed. Subsequently, the loading, welding and unloading can be repeated. As for the welding process, the motor that drives the screw to rotate, the No. 1 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 intermittent rotation of the rotary table 1 and the execution of the laser welding gun 9 can all be controlled by the background central control system through the written program, and are carried out in sequence according to the execution logic, which will not be repeated here; In this embodiment, the designed hardware laser welding machine can flexibly adjust the distance between the end of the laser welding gun 9 and the welding point, the welding angle and the height through the front and rear adjustment of the slide plate 3, the height adjustment of the guide rail 2, and the angular swing adjustment of the swing block 8, thereby successfully completing the welding of the three welds A, B and C. Compared with the existing method of controlling the laser welding gun 9 to perform welding by a robotic arm device, the hardware laser welding machine in this embodiment is relatively low in cost, and the subsequent maintenance and repair will also be greatly reduced. At the same time, it has a simple structure, is easy to operate, has a simple execution logic, and comprehensively considers many aspects, which can meet the needs of small enterprises or manufacturers.

[0023] Reference Figure 1 - Figure 12 The outer ring of the rotating table 1 is provided with a gear ring 11, the outer ring of the gear ring 11 is meshed with a gear 12, and a base 13 is provided under the rotating table 1, and the rotating table 1 is rotatably connected to the base 13; The base 13 and the middle part of the rotating table 1 are connected through each other. A plurality of vertical guide rods 14 are arranged in an array on the inner circumference of the rotating table 1. The upper end of each guide rod 14 is inclined toward the inner axis of the rotating table 1. Considering the cooperation welding between the round tube 102 and the bottom plate 101, it is necessary to make the axis of the round tube 102 and the axis of the hole on the bottom plate 101 tend to be in the same line with the turntable in order to weld a solid weld, and at the same time avoid the misalignment between the inner ring of the round tube 102 and the hole on the bottom plate 101, which affects the smoothness of the medium flowing inside it, or when the cable passes through the inside, the steps caused by the misalignment cause scratches and damage to the surface of the cable; for this reason, a guide rod 14 is designed in this embodiment, the lower end of the guide rod 14 is connected to the inner ring of the turntable 1, and rotates synchronously with the turntable 1, guiding The upper end of the guide rod 14 is inclined toward the axis of the rotary table 1. When loading, the bottom plate 101 is placed first, and the guide rod 14 passes through the hole on the bottom plate 101 and is attached to the inner wall of the hole. Then the round tube 102 is placed, and the inner wall of the round tube 102 is attached to the guide rod 14 and moved down to sit on the bottom plate 101. At this time, the axis of the hole on the bottom 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 bottom plate 101, thereby reducing the problem of cold welding in the subsequent welding process. In this embodiment, the base 13 is provided to provide a stable rotating platform for the rotating table 1. The rotating shaft of the gear 12 passes downward through the base 13 and is connected to the output end of the external motor. The gear 12 engages the gear ring 11, and the gear ring 11 drives the rotating 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 obliquely arranged blanking plate 16. The other end of the horizontal plate 15 is fixedly connected to a connecting rod 17. The end of the connecting rod 17 is fixedly connected to the slide 3. A second hydraulic rod 18 is further provided below the base 13. A support plate 19 is fixedly connected to the output end of the second hydraulic rod 18. A plurality of push rods 20 are fixedly connected to the support plate 19. The push rods 20 can pass through the top of the rotating table 1 and push the welded bottom plate 101 and the round tube 102 upwards and away from the rotating table 1. After the three welds A, B and C are welded, the slide 3 moves away from the round tube 102 and back to its original position. At the same time, the slide 3 drives the horizontal plate 15 below the base 13 to move. The horizontal plate 15 is mounted below the base 13 through a plurality of top plates 21. The horizontal plate 15 can slide on the top plates 21. The horizontal plate 15 moves with the slide plate 3, and at the same time the horizontal plate 15 drives the blanking plate 16 to approach the round tube 102, and then the second hydraulic rod 18 pushes up the supporting plate 19, and the supporting plate 19 drives multiple push rods 20 to move up and push up on the lower surface of the bottom plate 101, pushing the bottom plate 101 together with the round tube 102, so that the bottom plate 101 and the round tube 102 are separated from the guide rod 14, and then the round tube 102 is easily pushed, and the round tube 102 together with the bottom plate 101 is pushed onto the lower plate 16, so as to achieve Unloading operation: After the round tube 102 and the bottom plate 101 are welded, the high temperature generated by the welding is transferred to the upper end of the round tube 102. At this time, if the top is directly taken out, the contact time with the round tube 102 is long, and there is a possibility of burns. However, by pushing the bottom plate 101 and the round tube 102 upward, the unloading can be easily pushed, and the contact time with the round tube 102 is short, which reduces the possibility of burns. After the unloading is completed, the new bottom plate 101 and the round tube 102 can be loaded onto the rotating table 1.

[0025] Reference Figure 1 - Figure 12 The two push rods 20 near the blanking 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 through a spring 24, and the lower end of the slide rod 22 is symmetrically fixed to a limit plate 25. The limit 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, and the push rod 20 passes through the rotary table 1 and pushes the bottom plate 101 and the round tube 102, pushing the round tube 102 together with the bottom plate 101 off the guide rod 14, and then the support plate 19 continues to move upward. At this time, the two push rods 20 near the blanking plate 16 fail to effectively push the bottom plate 101. The push rod 20 near the bottom plate 101 and the limit plate 25 are pressed against the lower surface of the rotary table 1, and the upward movement of the slide rod 22 is limited, limited to the slide rod 2 2. The bottom plate 101 and the round tube 102 are lifted up and separated from the guide rod 14. The push rod 20 away from the blanking plate 16 can still move up and down. At this time, the bottom plate 101 and the round tube 102 can be tilted, so that the blanking plate 16 of the round tube 102 is tilted. Finally, the welded round tube 102 and the bottom plate 101 are tilted and fall onto the blanking plate 16, and automatic blanking is achieved. After blanking is completed, the support plate 19 is lowered and reset, and all the push rods 20 are moved down to the bottom of the rotating table 1. The top round tube 102 and the bottom plate 101 fall obliquely onto the blanking plate 16 to realize automatic blanking without manual intervention in the blanking process, thereby reducing manual participation and improving efficiency and safety.

[0026] Reference Figure 1 - Figure 7 , an induction heating plate 27 is provided at the high point of the blanking plate 16, and the induction heating plate 27 is used to heat the welding position between the bottom 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 adapted to the outer surface shape of the circular tube 102. After the new bottom plate 101 and the circular tube 102 are loaded onto the rotating table 1, the induction heating plate 27 is energized, and the rotating table 1 drives the bottom plate 101 and the circular tube 102 to rotate slowly. The induction heating plate 27 heats the welding position of the circular tube 102 and the bottom plate 101 to eliminate the internal stress of the circular tube 102 and the bottom plate 101, so as to avoid deformation of the bottom plate 101 or the circular tube 102 during the welding process. The induction heating plate 27 is arranged on the blanking plate 16 and can move with the blanking plate 16. After the unloading is completed, the new base plate 101 and the round tube 102 are loaded onto the rotary table 1, and the slide plate 3 moves again in the direction away from the round tube 102. At this time, the slide plate 3 drives the blanking plate 16 to approach the round tube 102 again, and the blanking 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 the heating is completed, welding is performed, and the slide plate 3 drives the laser welding gun 9 to move toward the round tube 102. At the same time, the blanking plate 16 and the induction heating plate 27 are away from the round tube 102.

[0027] Reference Figure 1 - Figure 11 , a plurality of spring pieces 28 are symmetrically provided on the rotating table 1, and the spring pieces 28 are used to clamp and fix the base plate 101 to be welded; The bottom plate 101 is placed on the rotating table 1, the guide rod 14 passes through the hole on the bottom plate 101, and the bottom plate 101 is pressed down with force to buckle the edge of the bottom plate 101 between the spring pieces 28. At this time, it can be said that the bottom plate 101 has been installed in place, that is, the bottom plate 101 has been completely seated on the rotating table 1 to prevent the bottom plate 101 from being suspended above the rotating table 1 and affecting the subsequent position adjustment of the end of the laser welding gun 9; and the spring piece 28 is set to rotate synchronously with the rotating table 1. When the round tube 102 is heated by the induction heating plate 27, the upper edge height 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 A plurality of vertical rods 29 are symmetrically fixed to the support plate 19. The vertical rods 29 pass through the base 13 upward, and a ring body 30 is fixed to the upper ends of the plurality of vertical rods 29. The inner diameter of the ring body 30 is the same as the inner diameter of the circular tube 102 to be welded, and a plurality of balls 31 are provided on the lower surface of the ring body 30. The balls 31 are attached to the upper end surface of the circular tube 102 and roll; Some thinner bottom plates 101 are slightly deformed, which makes it impossible for the bottom plates 101 to be completely attached to the rotating table 1, and also impossible to fit tightly with the lower end of the round tube 102, leaving some gaps. For this reason, a ring body 30 is provided to press down the round tube 102; the No. 2 hydraulic rod 18 drives the supporting plate 19 to move downward, and the supporting plate 19 drives multiple vertical rods 29 to move downward, and at the same time, the vertical rods 29 press the ring body 30 down on the upper end surface of the round tube 102, and the pressure applied to the round tube 102 will also act on the bottom plate 101, pressing the bottom plate 101 The base plate 101 is pressed flat on the rotating table 1, and the gap between the circular tube 102 and the base plate 101 is also pressed to eliminate, which helps to improve the welding quality. Considering the extrusion friction between the ring body 30 and the circular tube 102, a ball 31 is provided on the lower surface of the ring body 30 to convert the sliding friction between the ring body 30 and the circular tube 102 into rolling friction between the ball 31 and the circular tube 102, thereby reducing the relative rotation resistance between the ring body 30 and the circular tube 102, and will not affect the rotation of the circular tube 102 with the rotating table 1.

[0029] Reference Figure 1 - Figure 12 A plurality of slide grooves 32 are evenly provided on the lower surface of the rotating table 1. The lower end of the guide rod 14 is bent vertically and extends into the slide groove 32. A push rod 33 is fixed to the bent horizontal surface of the guide rod 14. The push rod 33 extends downwardly from the rotating table 1. A circular plate 34 is provided on the lower surface of the rotating table 1. A plurality of arc-shaped extrusion holes 35 are evenly formed on the circular plate 34. The lower end of the push rod 33 passes through the extrusion hole 35. The lower end of the push rod 33 is threadedly connected to a fastening nut 36. The inner diameter of the circular 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 of different diameters, the diameter of the circle enclosed by the guide rod 14 is set to an adjustable structure. That is, in this embodiment, by rotating the circular plate 34, the extrusion hole 35 on the circular plate 34 will squeeze the push rod 33, so that the push rod 33 moves away from the axis of the turntable 1, thereby increasing the diameter of the circle enclosed by the guide rod 14, or the extrusion hole 35 on the circular plate 34 will squeeze the push rod 33, so that the push rod 33 moves toward the axis of the turntable 1, thereby reducing the diameter of the circle enclosed by the guide rod 14, and then being able to support and expand hardware of different specifications. After the rotation of the circular plate 34 is completed, tightening one of the fastening nuts 36 can fix the circular plate 34, and all the guide rods 14 can also be fixed.

[0030] Reference Figure 1 - Figure 11 A groove is formed on the outer wall of each guide rod 14, and the groove is formed along the length direction of the guide rod 14, and a roller 37 is rotatably connected in the groove; The diameter of the circle surrounded by the outer walls of the multiple guide rods 14 is slightly larger than the diameter of the holes on the base plate 101 and the inner ring of the circular tube 102. The multiple guide rods 14 are interference fit with the holes on the base plate 101 and the inner ring of the circular tube 102, which is equivalent to the size of the hole being smaller than the size of the shaft. The interference fit between the two can expand, squeeze and stabilize the circular tube 102 and the base plate 101, and at the same time make the axis of the circular tube 102 and the axis of the hole on the base plate 101 tend to be in the same line. The interference fit will affect the smoothness of loading the base plate 101 and the circular tube 102. For this reason, a roller body 37 is provided on the outer wall of each guide rod 14. The surface of the roller body 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 circular tube 102, thereby improving the smoothness of loading and unloading of the base plate 101 and the circular tube 102.

[0031] Reference Figure 1 - Figure 11 An oil filling hole 38 is provided at the upper end of the guide rod 14, and the oil filling 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 is radiated onto the guide rod 14, which will accelerate the evaporation of the lubricating oil in the groove. At this time, the lubricating oil needs to be replenished in time to reduce the wear of the roller body 37. For this purpose, an oil filling hole 38 is provided at the upper end of each guide rod 14. When lubricating oil is added to the oil filling hole 38, the lubricating oil will flow downward along the groove, and can quickly cover the surface of the groove and the surface of the roller body 37, thereby fully lubricating and protecting the roller body 37.

[0032] Working principle: The specific operation process of the hardware 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 screw to rotate, the screw pushes the guide rail 2 close to the round tube 102, and then drives the No. 1 hydraulic rod 10 to move the entire guide rail 2 downward. 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 the welding of weld A is carried out; For welding of weld seam B, the rotary table 1 is paused after rotating one circle, and the electric push rod 4 is driven. The electric push rod 4 drives the U-shaped plate 5 to move toward the direction of the round tube 102, and 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 toward the direction of the round tube 102. At the same time, the swing block 8 drives the end of the laser welding gun 9 to tilt downward, and the end of the laser welding gun 9 points to the position of weld seam B to be welded. Then, the distance between the end of the laser welding gun 9 and weld seam B to be welded is adjusted by moving the slide plate 3 and the height of the slide rail. Finally, the rotary table 1 is driven to rotate slowly, and then weld seam B is welded. For welding of weld seam C, the rotary table 1 is paused after rotating one circle, and the electric push rod 4 is driven. The electric push rod 4 drives the U-shaped plate 5 to move away from the round tube 102, and 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 deflect upward, and the end of the laser welding gun 9 points to the position of weld seam C to be welded. Then, the distance between the end of the laser welding gun 9 and weld seam B to be welded is adjusted by moving the slide plate 3 and the height of the guide rail 2. Finally, the rotary table 1 is driven to rotate slowly, and then weld seam C is welded. After the three welds A, B and C are welded, the electric push rod 4 drives the U-shaped plate 5 to reset. At the same time, the No. 1 hydraulic rod 10 drives the entire guide rail 2 to move up and reset. The screw drives the slide 3 to retreat away from the round tube 102. After that, the welded bottom plate 101 and the cylinder are removed. Subsequently, the loading, welding and unloading can be repeated. As for the welding process, the motor that drives the screw to rotate, the No. 1 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 intermittent rotation of the rotary table 1 and the execution of the laser welding gun 9 can all be controlled by the background central control system through the written program, and are carried out in sequence according to the execution logic, which will not be repeated here; In this embodiment, the designed hardware laser welding machine can flexibly adjust the distance between the end of the laser welding gun 9 and the welding point, the welding angle and the height through the front and rear adjustment of the slide plate 3, the height adjustment of the guide rail 2, and the angular swing adjustment of the swing block 8, thereby successfully completing the welding of the three welds A, B and C. Compared with the existing method of controlling the laser welding gun 9 to perform welding by a robotic arm device, the hardware laser welding machine in this embodiment is relatively low in cost, and the subsequent maintenance and repair will also be greatly reduced. At the same time, it has a simple structure, is easy to operate, has a simple execution logic, and comprehensively considers many aspects, which can meet the needs of small enterprises or manufacturers.

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

Claims

1. A hardware laser welding machine, characterized by: The utility model comprises a rotating table, on which a base plate to be welded is placed, and above the base plate a round pipe to be welded therewith is placed; A welding assembly is provided on one side of the rotating table. The welding assembly includes a guide rail, a slide is slidably connected to the guide rail, an electric push rod is provided on the slide, the output end of the electric push rod points to the round tube, and a U-shaped plate is fixed to the output end of the electric push rod. The U-shaped plate is attached to the upper surface of the slide and slides; The upper surfaces of the two plates of the U-shaped plate are provided with notches, with the two sides of each notch positioned higher and the middle position lower; A tension spring is provided on the slide plate, which is fixed between the two plates of the U-shaped plate, and a swing block is fixed to the end of the tension spring. The lower surface of the swing block is provided with an inclined surface that adapts to the shape of the notch, and a laser welding gun is fixed to the swing block. A hydraulic rod is provided below the guide rail to drive it to move up and down.

2. The hardware laser welding machine according to claim 1, characterized in that: The outer ring of the rotating table is provided with a gear ring, the outer ring of the gear ring is meshed with a gear, and a base is provided under the rotating table, and the rotating table is rotatably connected to the base; The middle part of the base and the rotating table is penetrated, and a plurality of vertical guide rods are arranged in a circular array on the inner circle of the rotating table, and the upper end of each guide rod is inclined toward the axis direction of the inner circle of the rotating table.

3. The hardware laser welding machine according to claim 2, characterized in that: A horizontal plate is provided below the base, one end of which extends vertically upward and is fixedly connected to an inclined blanking plate, and the other end of which is fixedly connected to a connecting rod, the end of which is fixedly connected to the slide plate; A No. 2 hydraulic rod is also provided under the base. The output end of the No. 2 hydraulic rod is fixedly connected to a support plate, and a plurality of push rods are fixedly connected to the support plate. The push rods can pass through the top of the turntable and push the welded bottom plate and round tube up and off the turntable.

4. The hardware laser welding machine according to claim 3, characterized in that: The two push rods close to the blanking plate include a slide rod and a sleeve. The lower end of the slide rod is slidably connected to the sleeve through a spring, and the lower end of the slide rod is symmetrically fixed to a limit plate, which can slide along the vertical hole opened on the outer ring of the sleeve.

5. The hardware laser welding machine according to claim 3, characterized in that: An induction heating plate is provided at the high point of the blanking plate, and the induction heating plate is used to heat the welding position between the bottom plate and the round tube.

6. The hardware laser welding machine according to claim 3, characterized in that: A plurality of spring pieces are symmetrically arranged on the rotating table, and the spring pieces are used to clamp and fix the base plate to be welded.

7. The hardware laser welding machine according to claim 3, characterized in that: Multiple vertical rods are symmetrically fixed on the support plate, and the vertical rods pass through the base upward. The upper ends of the multiple vertical rods are commonly fixed with a ring body. The inner ring diameter of the ring body is the same as the inner ring diameter of the circular tube to be welded, and multiple balls are provided on the lower surface of the ring body. The balls are attached to the upper end surface of the circular tube and roll.

8. The hardware laser welding machine according to claim 6, characterized in that: A plurality of slide grooves are evenly arranged on the lower surface of the rotating table. The lower end of the guide rod is bent vertically and extends into the slide groove. A push rod is fixed to the bent horizontal surface of the guide rod, and the push rod extends below the rotating table. A circular plate is provided on the lower surface of the rotating table, and a plurality of arc-shaped extrusion holes are evenly opened on the circular plate. The lower end of the push rod passes through the extrusion hole, and the lower end of the push rod is threadedly connected with a fastening bolt.

9. The hardware laser welding machine according to claim 8, characterized in that: A groove is provided on the outer side wall of each guide rod, the groove is provided along the length direction of the guide rod, and a roller body is rotatably connected in the groove.

10. The hardware laser welding machine according to claim 9, characterized in that: An oil filling hole is provided at the upper end of the guide rod, and the oil filling hole is connected to the groove.

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