A multi-purpose laser welding machine

Abstract

The present invention relates to the technical field of laser welding. The present invention discloses a multi-purpose laser welding integrated machine, comprising a machine body and a pipe, wherein a welding gun is connected to the machine body through a cable, and further comprising: a supporting mechanism assembled on the welding gun, wherein the supporting mechanism comprises a connecting frame fixedly connected to the welding gun, wherein a pair of supporting rods for keeping a distance between the welding gun and the pipe are rotatably mounted on the connecting frame, wherein the rotating angle of the supporting rods is controlled by a distance adjustment component to adapt to keep different distances between the welding gun and the pipe, wherein a rotating shaft is rotatably mounted on the supporting rod, wherein a roller in contact with the surface of the pipe is rotatably mounted on the rotating shaft; when the welding gun is welding on the pipe, the supporting rod enables the welding gun to maintain a fixed distance with the pipe, thereby solving the problem that a worker holding the welding gun cannot stably maintain a distance with the pipe, thereby affecting the welding quality; wherein the roller can roll in contact with the surface of the pipe when the welding gun is welding, thereby facilitating the welding of the welding gun.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a multi-purpose laser welding all-in-one machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. This method was first used in the 1970s to weld thin-walled materials and low-speed welding. The process is heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction, thereby melting the workpiece and forming a specific molten pool. Laser welding equipment is often required when welding pipes.

[0003] However, when existing laser welding machines are used for welding, the distance between the welding gun and the object to be welded needs to be flexibly adjusted due to different welding requirements. When workers hold the welding head to weld the pipe joints, it is difficult for them to accurately control the distance between the welding gun and the object to be welded. As a result, the welding quality is difficult to guarantee when welding objects with different requirements. In addition, due to the high accuracy requirements of laser welding, long-term and high-intensity concentrated use will cause operator fatigue, and the probability of welding errors will increase, affecting the processing quality of the workpiece. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that when using an existing laser welding machine, the distance between the welding gun and the object to be welded needs to be flexibly adjusted due to different welding requirements, and workers hold the welding head to weld the pipe joints, and it is difficult for employees to accurately control the distance between the welding gun and the object to be welded. It is difficult to ensure the welding quality when welding objects with different requirements. In addition, due to the high accuracy requirements of laser welding, long-term and high-intensity concentrated use will cause operator fatigue, and the probability of welding errors will increase, affecting the processing quality of the workpiece. Therefore, a multi-purpose laser welding machine is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a multi-purpose laser welding machine: comprising a machine body and a pipe, the machine body is connected to a welding gun through a cable, and further comprising:

[0006] A support mechanism mounted on the welding gun, the support mechanism comprising a connecting frame fixedly connected to the welding gun, a pair of support rods rotatably mounted on the connecting frame for maintaining a distance between the welding gun and the pipe, the rotation angle of the support rods being controlled by a distance adjustment assembly to adapt to maintaining different distances between the welding gun and the pipe, a rotating shaft rotatably mounted on the support rods, and a roller rotatably mounted on the rotating shaft for contacting the surface of the pipe;

[0007] A guide mechanism is assembled on the connecting frame, wherein the connecting rod included in the guide mechanism is fixedly connected to the connecting frame, and further includes a guide ring fixed to the pipe through a fixing assembly, wherein the guide ring is provided with a guide groove for sliding the movable frame, and a movable plate is slidably mounted on the movable frame, wherein the connecting rod penetrates the movable plate and is slidably connected thereto, and wherein a positioning assembly is provided in the movable plate to prevent the connecting rod from malfunctioning and causing unstable welding, and the welding gun can rotate around the guide ring to perform annular welding on the pipe;

[0008] And a limiting component which is assembled on the movable frame and cooperates with the clamping component for radial welding.

[0009] As a further description of the above technology, a multi-purpose laser welding machine:

[0010] The distance adjustment component includes a lifting block slidably connected to the connecting frame, the lifting block and the support rod are both provided with teeth and mesh with each other, a first screw rod penetrating the lifting block is rotatably installed on the connecting frame, the first screw rod is threadedly connected to the lifting block, and the lifting block is raised or lowered by rotating the first screw rod to adjust the rotation angle of the support rod, thereby adjusting the distance between the welding gun and the pipe.

[0011] As a further description of the above technology, a multi-purpose laser welding machine:

[0012] The outer surface of the roller is coated with ceramic abrasive, and a positioning assembly is arranged on the support rod, wherein the positioning assembly comprises a slide groove provided on the support rod, and a positioning block capable of limiting the rotating shaft is slidably installed in the slide groove. Preferably, the positioning block is made of a magnet and is adsorbed in the slide groove, and the friction force formed by the magnetic force acts as a damping force when the positioning block slides, thereby preventing the positioning block from sliding arbitrarily in the slide groove.

[0013] As a further description of the above technology, a multi-purpose laser welding machine:

[0014] The roller is provided with a blowing assembly, which includes an air cavity opened in the roller, an elastic soft membrane is fixedly installed in the air cavity, a pressure column is movably arranged in the air cavity, and an air hole connected with the air cavity is opened on the surface of the roller.

[0015] As a further description of the above technology, a multi-purpose laser welding machine:

[0016] The positioning assembly comprises an elastic block which is fixedly mounted on the movable plate and can abut against the connecting rod, and an airtight core is fixedly mounted on the elastic block.

[0017] As a further description of the above technology, a multi-purpose laser welding machine:

[0018] The limiting assembly comprises a second screw rod rotatably mounted on the movable frame, and a pressing plate is threadedly connected to the second screw rod.

[0019] As a further description of the above technology, a multi-purpose laser welding machine:

[0020] The fixing assembly comprises a group of bolts threadably connected to the guide ring, and a fixing rod is rotatably mounted on the bolts.

[0021] As a further description of the above technology, a multi-purpose laser welding machine:

[0022] The fixing assembly also includes a synchronization ring rotatably connected to the guide ring, and the synchronization ring is provided with teeth meshing with a group of fixing rods.

[0023] In summary, due to the use of the above-mentioned technology, a multi-purpose laser welding machine has the following beneficial effects:

[0024] 1. When the welding gun is welding on the pipe, the support rod keeps the welding gun at a fixed distance from the pipe, solving the problem that the worker holding the welding gun cannot keep a stable distance from the pipe, which affects the welding quality. At the same time, the roller can roll on the surface of the pipe when the welding gun is welding, which facilitates the welding of the welding gun and improves the smoothness of welding, further improving the welding efficiency.

[0025] 2. By rotating the first screw, the lifting block is raised or lowered in the connecting frame, driving the support rod engaged with the lifting block to rotate. When the support rod rotates, the angle between the support rod and the pipe changes, which will make the welding gun closer to or farther away from the pipe, thereby adjusting the distance between the welding gun and the pipe, so as to adapt to different welding requirements, improve welding quality, and achieve different welding effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The overall structural diagram provided by the embodiment of the present invention is shown;

[0027] Figure 2 The schematic diagram of the structure of the welding gun in the present invention is shown;

[0028] Figure 3 A schematic diagram of the structure of the support mechanism in the present invention is shown;

[0029] Figure 4 The present invention is shown Figure 3 Schematic diagram of the structure at A in FIG.

[0030] Figure 5 The structure schematic diagram of the air blowing assembly in the present invention is shown;

[0031] Figure 6 A schematic structural diagram of the guide mechanism in the present invention is shown;

[0032] Figure 7 A schematic diagram of the structure of the locking assembly in the present invention is shown;

[0033] Figure 8 The present invention is shown Figure 6 Schematic diagram of the structure at B in FIG.

[0034] Fig. 9 A schematic diagram of the structure of the guide ring in the present invention is shown;

[0035] Fig.10 The present invention is shown Fig. 9 Schematic diagram of the structure at point C in the figure.

[0036] Legend:

[0037] 10. Machine body; 11. Cables; 12. Welding gun; 13. Pipes;

[0038] 20. Support mechanism; 21. Connecting frame; 22. Support rod; 23. Lifting block; 24. First screw rod; 25. Roller; 26. Rotating shaft;

[0039] 30. Positioning assembly; 31. Slide; 32. Positioning block;

[0040] 40. Blowing assembly; 41. Air hole; 42. Air cavity; 43. Elastic soft film; 44. Pressure column;

[0041] 50. Guide mechanism; 51. Guide ring; 52. Guide groove; 53. Movable frame; 54. Movable plate; 55. Connecting rod;

[0042] 541, a positioning assembly; 542, an airtight core; 543, an elastic block;

[0043] 531, limit assembly; 532, second screw rod; 533, pressing plate;

[0044] 60. Fixing assembly; 61. Fixing rod; 62. Synchronizing ring; 63. Bolt. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a multi-purpose laser welding machine. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1 - Fig.10As shown, the present invention adopts the following technology: a multi-purpose laser welding machine: including a machine body 10 and a pipe 13, the machine body 10 is connected to a welding gun 12 through a cable 11, and also includes:

[0047] A support mechanism 20 is mounted on the welding gun 12, and the support mechanism 20 includes a connecting frame 21 fixedly connected to the welding gun 12. A pair of support rods 22 are rotatably mounted on the connecting frame 21 to keep the welding gun 12 and the pipe 13 at a distance. The rotation angle of the support rod 22 is controlled by the distance adjustment component to adapt to keep different distances between the welding gun 12 and the pipe 13. A rotating shaft 26 is rotatably mounted on the support rod 22, and a roller 25 that fits the surface of the pipe 13 is rotatably mounted on the rotating shaft 26; when the welding gun 12 is welding on the pipe 13, the support rod 22 keeps the welding gun 12 at a fixed distance from the pipe 13, which solves the problem that the worker holding the welding gun 12 cannot stably maintain the distance between the welding gun 12 and the pipe 13, affecting the welding quality. At the same time, the roller 25 can roll on the surface of the pipe 13 when the welding gun 12 is welding, so as to facilitate the welding of the welding gun 12 and improve the smoothness of welding, thereby further improving the welding efficiency.

[0048] In further detail, different welding requirements require that the welding gun 12 maintain a different distance from the pipe 13. The distance adjustment component includes a lifting block 23 that is slidably connected to the connecting frame 21. The lifting block 23 and the support rod 22 are both provided with teeth and mesh with each other. A first screw 24 that penetrates the lifting block 23 is rotatably installed on the connecting frame 21. The first screw 24 is threadedly connected to the lifting block 23. The lifting block 23 is raised or lowered in the connecting frame 21 by rotating the first screw 24, driving the support rod 22 meshed with the lifting block 23 to rotate. When the support rod 22 rotates, the angle between the support rod 22 and the pipe 13 changes, which will make the welding gun 12 approach or move away from the pipe 13, thereby achieving the adjustment of the distance between the welding gun 12 and the pipe 13, so as to adapt to different welding requirements, improve the welding quality, and achieve different welding effects.

[0049] like Figure 4As shown, the outer surface of the roller 25 is coated with ceramic abrasive, and a positioning assembly 30 is provided on the support rod 22. The positioning assembly 30 includes a slide groove 31 opened on the support rod 22, and a positioning block 32 capable of limiting the rotation shaft 26 is slidably installed in the slide groove 31; before welding, the slidable positioning block 32 limits the rotation shaft 26, so that the rotation shaft 26 and the roller 25 cannot rotate, and then the welding gun 12 is moved to make the roller 25 pass on the surface of the pipe 13, grind the pipe 13, grind off the oxide scale and impurities on the surface of the pipe 13, greatly reduce the spatter phenomenon during welding, improve welding efficiency and quality, and avoid the situation where workers are scalded by spatter, and also reduce the possibility of fire caused by spatter to form a safety hazard; after welding, the roller 25 is limited to rotate to grind and trim the weld on the pipe 13, which can remove the excess part on the weld, improve the welding quality and the aesthetics of the connection of the pipe 13 after welding.

[0050] like Figure 5 As shown, the roller 25 is provided with a blowing assembly 40, and the blowing assembly 40 includes an air cavity 42 opened in the roller 25, an elastic soft film 43 is fixedly installed in the air cavity 42, a pressure column 44 is movably arranged in the air cavity 42, and an air hole 41 connected to the air cavity 42 is opened on the surface of the roller 25; after the pipe 13 is polished, the restriction on the roller 25 is released and the roller 25 is made to roll quickly on the polished surface of the pipe 13. When the roller 25 rolls, the pressure column 44 is affected by gravity in the air cavity The elastic soft film 43 moves inside the roller 25 and squeezes the elastic soft film 43. After the elastic soft film 43 is squeezed, the air between the elastic soft film 43 and the air hole 41 will be quickly ejected along the air hole 41 and sprayed to the surface of the pipe 13, which can quickly blow the debris generated by grinding away from the surface of the pipe 13, further improving the welding quality. In addition, during the welding process, the pressure column 44 in the roller 25 squeezes the elastic soft film 43 to generate an airflow that can keep a small amount of spatter generated during welding away from the welding path, further improving the welding quality.

[0051] like Figure 6 - Fig.10 As shown, the guide mechanism 50 is assembled on the connecting frame 21, the connecting rod 55 included in the guide mechanism 50 is fixedly connected to the connecting frame 21, and also includes a guide ring 51 fixed on the pipe 13 through a fixing assembly 60, the fixing assembly 60 includes a group of bolts 63 threadedly connected to the guide ring 51, the fixing rod 61 is rotatably mounted on the bolt 63, and also includes a synchronizer ring 62 rotatably connected to the guide ring 51, and the synchronizer ring 62 is provided with teeth meshing with a group of fixing rods 61; when the guide ring 51 is fixed on the pipe 13, the synchronizer ring 62 is rotated to synchronously drive all the fixing rods 61 to rotate until the fixing rods 61 abut against the surface of the pipe 13, and then the bolt 63 is tightened to fix the guide ring 51 and keep it concentric with the pipe 13, and it can be fixed on pipes 13 with different diameters;

[0052] In further detail, the guide ring 51 is provided with a guide groove 52 for the movable frame 53 to slide, and a movable plate 54 is slidably installed on the movable frame 53. The connecting rod 55 penetrates the movable plate 54 and is slidably connected thereto. When the distance between the welding gun 12 and the pipe 13 increases or decreases, the connecting rod 55 drives the movable plate 54 to move upward or downward on the movable frame 53. A positioning assembly 541 is provided in the movable plate 54 to prevent the connecting rod 55 from malfunctioning and causing unstable welding. The positioning assembly 541 includes an elastic block 543 fixedly installed on the movable plate 54 and capable of abutting against the connecting rod 55. The airtight core 542 and the welding gun 12 can rotate around the guide ring 51 to perform annular welding on the pipe 13; the airtight core 542 is used to inflate the elastic block 543, so that the elastic block 543 expands and contacts the connecting rod 55. After the connecting rod 55 is fixed, the welding gun 12 is pushed, so that the welding gun 12 performs annular movement around the guide ring 51 on the surface of the pipe 13 and performs welding, thereby avoiding the phenomenon of deviation in the welding gun 12 during the welding process, improving the stability of the workers when welding the pipe 13, reducing the burden on the workers without long-term high-intensity concentration, and improving the accuracy of grinding the pipe 13;

[0053] And a limiting component 531 assembled on the movable frame 53 and cooperating with the locking component 541 for radial welding, the limiting component 531 includes a second screw 532 rotatably mounted on the movable frame 53, and a clamping plate 533 is threadedly connected to the second screw 532; when the two half rings are welded and radial welding is required, the second screw 532 is rotated to make the clamping plate 533 abut against the guide ring 51, so that the movable frame 53 cannot move in the guide groove 52, and the gas in the elastic block 543 is released through the airtight core 542, so that the connecting rod 55 can move radially in the movable plate 54, so that the welding gun 12 can stably move radially on the surface of the pipe 13 and weld, so that the welding gun 12 can achieve stable and reliable welding effects when dealing with various welding conditions, increase the welding scenarios in which the equipment can stably weld, and improve welding efficiency.

[0054] Working principle: When the welding gun 12 is welding on the pipe 13, the support rod 22 keeps the welding gun 12 at a fixed distance from the pipe 13, solving the problem that the worker holding the welding gun 12 cannot stably maintain the distance from the pipe 13, which affects the welding quality. At the same time, the roller 25 can roll on the surface of the pipe 13 when the welding gun 12 is welding, so as to facilitate the welding of the welding gun 12 and improve the smoothness of welding, thereby further improving the welding efficiency.

[0055] By rotating the first screw rod 24, the lifting block 23 is raised or lowered in the connecting frame 21, driving the support rod 22 engaged with the lifting block 23 to rotate. When the support rod 22 rotates, the angle between the support rod 22 and the pipe 13 changes, which makes the welding gun 12 approach or move away from the pipe 13, thereby adjusting the distance between the welding gun 12 and the pipe 13, so as to adapt to different welding requirements, improve welding quality, and achieve different welding effects;

[0056] Before welding, the slidable positioning block 32 can limit the rotating shaft 26, so that the rotating shaft 26 and the roller 25 cannot rotate, and then the welding gun 12 is moved so that the roller 25 passes over the surface of the pipe 13, and the pipe 13 is polished to remove the oxide scale and impurities on the surface of the pipe 13, which greatly reduces the spatter phenomenon during welding, improves the welding efficiency and quality, and avoids the situation where workers are scalded by spatter, and also reduces the possibility of fire caused by spatter to form a safety hazard; after welding, the roller 25 is limited to rotate to polish and trim the weld on the pipe 13, which can remove the excess part on the weld, improve the welding quality and the aesthetics of the connection of the pipe 13 after welding;

[0057] After the pipe 13 is polished, the restriction on the roller 25 is released and the roller 25 is made to roll rapidly on the polished surface of the pipe 13. When the roller 25 rolls, the pressure column 44 is affected by gravity to move in the air cavity 42 and squeeze the elastic soft film 43. After the elastic soft film 43 is squeezed, the air between the elastic soft film 43 and the air hole 41 will be quickly ejected along the air hole 41 and sprayed onto the surface of the pipe 13, which can quickly blow away the debris generated by the polishing from the surface of the pipe 13, further improving the welding quality. In addition, during the welding process, the airflow generated by the pressure column 44 in the roller 25 squeezing the elastic soft film 43 can keep a small amount of spatter generated during welding away from the welding path, further improving the welding quality.

[0058] When the guide ring 51 is fixed on the pipe 13, the synchronizer ring 62 is rotated to synchronously drive all the fixing rods 61 to rotate until the fixing rods 61 abut against the surface of the pipe 13, and then the bolts 63 are tightened to fix the guide ring 51 and keep it concentric with the pipe 13, and it can be fixed on pipes 13 with different diameters;

[0059] The elastic block 543 is inflated through the airtight core 542, so that the elastic block 543 expands and contacts the connecting rod 55. After the connecting rod 55 is fixed, the welding gun 12 is pushed, so that the welding gun 12 moves in a circular manner around the guide ring 51 on the surface of the pipe 13 and performs welding, thereby avoiding the phenomenon of deviation in the welding gun 12 during the welding process, improving the stability of the workers when welding the pipe 13, eliminating the need for long-term and high-intensity concentration to reduce the burden on the workers, and also improving the accuracy of grinding the pipe 13;

[0060] When radial welding is required for welding the two half rings, the second screw 532 is rotated to make the clamping plate 533 abut against the guide ring 51, so that the movable frame 53 cannot move in the guide groove 52, and the gas in the elastic block 543 is released through the airtight core 542, so that the connecting rod 55 can move radially in the movable plate 54, so that the welding gun 12 can stably move radially on the surface of the pipe 13 and weld, so that the welding gun 12 can achieve stable and reliable welding effects in response to various welding conditions, increase the welding scenarios in which the equipment can stably weld, and improve welding efficiency.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to a multi-purpose laser welding machine and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-purpose laser welding machine, comprising a machine body (10) and a pipe (13), wherein a welding gun (12) is connected to the machine body (10) via a cable (11), characterized in that: Also includes: A support mechanism (20) mounted on the welding gun (12), the support mechanism (20) comprising a connecting frame (21) fixedly connected to the welding gun (12), a pair of support rods (22) rotatably mounted on the connecting frame (21) for maintaining a spacing between the welding gun (12) and the pipe (13), the rotation angle of the support rods (22) being controlled by a distance adjustment assembly to adapt to maintaining different spacings between the welding gun (12) and the pipe (13), a rotating shaft (26) rotatably mounted on the support rods (22), and a roller (25) rotatably mounted on the rotating shaft (26) for contacting the surface of the pipe (13); A guide mechanism (50) is mounted on a connecting frame (21), wherein a connecting rod (55) included in the guide mechanism (50) is fixedly connected to the connecting frame (21), and further comprises a guide ring (51) fixed to the pipe (13) via a fixing assembly (60), wherein the guide ring (51) is provided with a guide groove (52) for sliding a movable frame (53), a movable plate (54) is slidably mounted on the movable frame (53), the connecting rod (55) penetrates the movable plate (54) and is slidably connected thereto, a locking assembly (541) is provided in the movable plate (54) for preventing the connecting rod (55) from malfunctioning and causing unstable welding, and the welding gun (12) can rotate around the guide ring (51) to perform annular welding on the pipe (13); and a limiting assembly (531) assembled on the movable frame (53) and cooperating with the locking assembly (541) for radial welding; The distance adjustment component comprises a lifting block (23) slidably connected to the connecting frame (21); the lifting block (23) and the support rod (22) are both provided with tooth grooves and mesh with each other; a first screw rod (24) penetrating the lifting block (23) is rotatably mounted on the connecting frame (21); the first screw rod (24) is threadedly connected to the lifting block (23); the lifting block (23) is raised or lowered by rotating the first screw rod (24) to adjust the rotation angle of the support rod (22), thereby adjusting the distance between the welding gun (12) and the pipe (13); The fixing assembly (60) comprises a group of bolts (63) threadedly connected to the guide ring (51), and a fixing rod (61) is rotatably mounted on the bolts (63); The fixing assembly (60) further comprises a synchronizing ring (62) rotatably connected to the guide ring (51), wherein the synchronizing ring (62) is provided with teeth meshing with a group of fixing rods (61).

2. The multi-purpose laser welding machine according to claim 1, characterized in that: The outer surface of the roller (25) is coated with ceramic abrasives. A positioning assembly (30) is provided on the support rod (22). The positioning assembly (30) comprises a slide groove (31) provided on the support rod (22). A positioning block (32) capable of limiting the position of the rotating shaft (26) is slidably installed in the slide groove (31).

3. The multi-purpose laser welding machine according to claim 2, characterized in that: The roller (25) is provided with an air blowing assembly (40), the air blowing assembly (40) comprising an air cavity (42) opened in the roller (25), an elastic soft membrane (43) fixedly installed in the air cavity (42), a pressure column (44) movably arranged in the air cavity (42), and an air hole (41) communicating with the air cavity (42) opened on the surface of the roller (25).

4. The multi-purpose laser welding machine according to claim 3, characterized in that: The locking assembly (541) comprises an elastic block (543) fixedly mounted on the movable plate (54) and capable of abutting against the connecting rod (55), and an airtight core (542) is fixedly mounted on the elastic block (543).

5. The multi-purpose laser welding machine according to claim 1, characterized in that: The limiting assembly (531) comprises a second screw rod (532) rotatably mounted on the movable frame (53), and a pressing plate (533) is threadedly connected to the second screw rod (532).

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