Laser welding equipment and welding method thereof

Abstract

The invention belongs to the technical field of laser welding, and particularly relates to laser welding equipment and a welding method thereof. Comprising a body, a connecting pipe and a laser welding gun, a winding disc is arranged at the top of the body and used for winding the connecting pipe, one end of the connecting pipe is wound on the winding disc, and the other end of the connecting pipe is connected to the side, away from the output end of the laser welding gun, of the laser welding gun; the laser welding gun is provided with a rotating and sucking assembly, and the rotating and sucking assembly is used for sucking splashing particles generated in the workpiece welding process of the laser welding gun. A cooler is arranged at the top of the laser welding gun through a bolt, and a multidirectional temperature control mechanism is arranged on the cooler; according to the device, splashing particles are sucked into the containing square box along with flowing of air by rotating the sucking assembly, it is avoided that time and energy need to be spent on cleaning bonded impurities afterwards, the working intensity of workers is reduced, the using and welding effects of the device are improved, and the limitation of the device in the using process is further reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of laser welding, and specifically relates to a laser welding device and a welding method thereof. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the workpiece surface, and the surface heat diffuses to the inside through heat conduction. By controlling parameters such as the laser pulse width, energy, peak power and repetition frequency, the workpiece is melted to form a specific molten pool.

[0003] In order to improve the convenience of use, the existing laser welding equipment generally uses a handheld laser welder (equipment) to perform welding operations on the workpiece. However, during the welding process, if there are impurities such as rust or dust on the surface of the workpiece where the welding is required, these impurities will quickly vaporize, burn or splash under the action of the high temperature of the laser, which will produce a similar "spark" effect, or the impurities on the workpiece will have a violent reaction under the action of the high temperature, causing some particles to splash out. At this time, the particles are in a red state due to the high temperature, which is equivalent to the above-mentioned similar "spark" phenomenon. If this phenomenon is scattered everywhere during welding and accidentally comes into contact with personnel, it will cause harm to them. At the same time, if these "sparks" fall on the workpiece or other places and cool down, they will stick to it, making it difficult to separate the two. The staff also needs to spend energy to clean up these bonded impurities afterwards, which not only increases the workload of the staff, but also reduces the use and welding effect of the equipment, thereby making the equipment have strong limitations when used. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a laser welding device and a welding method thereof, which effectively solve the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser welding device, comprising a body, a connecting pipe and a laser welding gun, wherein a winding reel is arranged on the top of the body, the winding reel is used to wind up the connecting pipe, one end of the connecting pipe is wound on the winding reel, and the other end is connected to a side of the laser welding gun away from its output end; the laser welding gun is provided with a rotary suction component, the rotary suction component is used to absorb the spattered particles generated by the laser welding gun during the welding process of the workpiece; a cooler is arranged on the top of the laser welding gun through bolts, and a multi-directional temperature control mechanism is arranged on the cooler, and the multi-directional temperature control mechanism is used to control the temperature at the output end of the laser welding gun; The rotary suction assembly includes a rotary motor, which is arranged on the top of the laser welding gun by bolts; a double-track pulley is installed on the output end of the rotary motor, and two first transmission belts are connected to the double-track pulley; two rotary pulleys are symmetrically arranged on both sides of the laser welding gun, and the two first transmission belts are respectively connected to the two rotary pulleys; a rotary shaft is installed at the bottom end of each of the two rotary pulleys, and a compound-motion expansion unit is arranged on the rotary shaft, and the compound-motion expansion unit is used to increase the space for the equipment to absorb particulate matter; a rotary base is installed on the rotary shaft, and the rotary base is arranged on the laser welding gun.

[0006] Preferably, a accommodating box is installed on both sides of the laser welding gun by bolts, and the side of the accommodating box away from the connecting pipe is opened, and a diffusion nozzle is installed at the opening; the end of the rotating shaft away from the rotating pulley passes through the accommodating box and is connected to a rotating bevel gear, and the rotating bevel gear is located in the accommodating box; the rotating bevel gear is meshed and connected to a driving bevel gear, and a driving shaft is installed on the side of the driving bevel gear away from the diffusion nozzle, and the driving shaft is transmission-connected to the inner side wall of the accommodating box; a first pulley is installed on the driving shaft.

[0007] Preferably, the first pulley is connected to a second transmission belt, and the second transmission belt is connected to a second pulley; the second transmission belt is slidably matched with the first pulley and the second pulley; the driving bevel gear and the second pulley are both equipped with an active rotating shaft on the side close to the diffuser nozzle, and the two active rotating shafts are commonly connected to a driving substrate, and both sides of the driving substrate are fixedly connected to the inner wall of the accommodating box; a plurality of blades are installed on the ends of the two active rotating shafts away from the second pulley; a first filter plate is also installed in the accommodating box, and the first filter plate divides the interior of the accommodating box into two areas, and the blades are located in the area away from the diffuser nozzle.

[0008] Preferably, the compound-moving expansion unit includes an active bevel gear arranged on a rotating shaft, the active bevel gear is meshedly connected to a driven bevel gear, a driven rotating shaft is installed on the driven bevel gear, a driven base plate is installed on the driven rotating shaft, and the driven base plate is arranged on a rotating base; a rotating disk is installed on the end of the driven rotating shaft away from the driven bevel gear, a compound-moving column is installed on the side of the rotating disk away from the driven bevel gear, a compound-moving cross block is slidably arranged on the compound-moving column, a compound-moving sliding column is symmetrically arranged on the top of the compound-moving cross block, and two compound-moving sliding columns are slidably connected to the compound-moving base plate together, and the compound-moving base plate is arranged on the driven base plate.

[0009] Preferably, a bending square rod is installed at the bottom of the double-acting cross block, a U-shaped square rod is installed on the end point of the bending square rod, a pressure U rod is installed on the opposite surface of the U-shaped square rod, the end points of the two pressure U rods are facing the containing square box and a pressure square plate is also installed; the top and bottom of the containing square box are provided with slots, a pressure square box is installed on the slot, and an air pressure feeding unit is arranged on the pressure square box; a plurality of feeding grooves are arranged on the opposite surfaces of the two pressure square boxes; an air inlet groove and an air outlet groove are arranged on the opposite back surfaces of the two pressure square boxes; the pressure square plate is located in the pressure square box and is slidably arranged; one end of the bending pipe is installed on the cooler, and the other end of the bending pipe is arranged on the pressure square box and is connected to the air inlet groove.

[0010] Preferably, the multi-directional temperature control mechanism includes a Z-shaped circular tube arranged on the cooler, an auxiliary substrate is installed on the Z-shaped circular tube, and the auxiliary substrate is arranged on the laser welding gun; the end of the Z-shaped circular tube away from the laser welding gun is connected to a gas storage ring, and the gas storage ring is arranged on the laser welding gun; an auxiliary ring groove is provided on the side of the gas storage ring away from the laser welding gun, and an annular pulley is rotatably provided on the auxiliary ring groove, and a plurality of ventilation grooves are penetrated on the annular pulley; a hollow cylinder with the same number as the ventilation grooves is provided on the side of the gas storage ring away from the laser welding gun, and a plurality of cooling grooves are provided on the side wall of the hollow cylinder close to the output end of the laser welding gun; the hollow cylinder is communicated with the ventilation groove; the Z-shaped circular tube is communicated with the gas storage ring.

[0011] Preferably, a high-pressure nozzle is installed on the side wall of the Z-shaped circular tube; a positioning substrate is provided on the auxiliary substrate, a positioning shaft is installed on the positioning substrate, a plurality of fan blades are installed on the positioning shaft, and the gas ejected from the output end of the high-pressure nozzle acts on the fan blades; a positioning gear is installed at the end of the positioning shaft away from the positioning substrate, the positioning gear is meshed and connected to the positioning gear ring, the positioning gear ring is arranged on the annular pulley, and the wheel groove of the annular pulley fits on the inner wall of the auxiliary ring groove.

[0012] Preferably, the air pressure feeding unit includes a circular square tube, the input end of the circular square tube is arranged on the accommodating square box and is connected to the air outlet groove; an air bag is installed on the output end of the circular square tube, and a first square tube is installed on the air bag, and the first square tube is arranged on the side of the accommodating square box close to the diffusion nozzle; a second square tube is installed on the side of the accommodating square box away from the diffusion nozzle, and a material storage square box is installed on the second square tube, and the material storage square box is arranged on the top of the accommodating square box; an auxiliary concave box is provided at the bottom of the material storage square box; and a second filter plate is installed in the material storage square box.

[0013] Preferably, the second filter plate is aligned with the side of the auxiliary concave box away from the diffusion nozzle; a recovery circular tube is provided on the side of the storage square box away from the second square tube, and the recovery circular tube is connected to the cooler; a limiting square column is installed on the top of the pressure U rod; a limiting square cylinder is provided on the inner top surface of the containing square box, and the limiting square cylinder is located on the moving path of the limiting square column; contact pieces are provided on one end of the limiting square column close to the limiting square cylinder and on the inner top surface of the limiting square cylinder.

[0014] The present invention also provides a laser welding method, comprising the following steps: S1. The workpiece can be welded using the laser welding gun on the main body. With the help of the connecting pipe, the laser welding gun has a wide working range and high degree of freedom. S2. The rotating suction assembly provided on the laser welding gun can collect the particles splashed during welding by the laser welding gun; S3. The output end of the laser welding gun is prevented from overheating by a multi-directional temperature control mechanism, which is used to control the ambient temperature of the output end of the laser welding gun.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) Under the action of the second pulley and the driving bevel gear, the two active shafts are driven to rotate synchronously, so that several blades on them rotate. It is worth mentioning that the shape of the blades is not the traditional straight plate shape, but has a certain curvature, so that the blades can better capture and guide the flow of air when rotating, thereby increasing the air flow rate and pressure difference, thereby increasing the suction force, so that several blades on the two active shafts generate suction in the containing box when rotating, so that the external air pressure and the air pressure in the containing box remain inconsistent, so that the containing box is constantly in a negative pressure state. Since the gas always flows from a high pressure area to a low pressure area, As a result, the external gas continuously enters the containing box through the diffusion nozzle, so that the above-mentioned splashed particles are sucked into the containing box along with the flow of air, so as to prevent these high-temperature particles from being scattered around the workpiece during welding and adhering to it after cooling, making it difficult to separate the two, which requires the staff to spend time and energy to clean up these adhering impurities afterwards, thereby reducing the staff's work intensity, improving the use of equipment and welding effect, and at the same time preventing these splashed particles from contacting with the staff and causing harm to them, thereby improving the safety of the equipment during use and reducing the limitations of the equipment during use; (2) The cooling gas flows into the hollow cylinder through the ventilation groove and continuously acts on the side wall of the output end of the laser welding gun through a number of cooling grooves, thereby reducing the temperature at the output end of the laser welding gun, preventing high temperature from accelerating the aging of key parts such as electronic components and optical components inside the laser welding gun, and allowing the temperature of the laser welding gun to be controlled within an appropriate range during operation, thereby increasing the service life of the laser welding gun and improving the stability and use effect of the laser welding gun during use, thereby avoiding sudden shutdown of the laser welding gun due to high temperature, and ensuring the stability and reliability of the laser welding gun during use; at the same time, during use, High-pressure gas is sprayed out through a high-pressure nozzle provided on the Z-shaped circular tube. The high-pressure gas acts on a number of fan blades to drive the positioning shaft to rotate, so that the positioning gear on it rotates and the meshing positioning gear ring rotates, thereby driving the annular pulley to rotate on the auxiliary ring groove, so that the hollow cylinder on the annular pulley rotates around the output end of the laser welding gun, so that the temperature at the output end of the laser welding gun can be controlled in all directions, avoiding the local temperature at the output end of the laser welding gun being too high due to the existence of a dead angle when controlling the temperature at the output end of the laser welding gun, affecting the welding operation, reducing the limitations of the equipment when in use, and further improving the welding effect of the equipment; (3) It is worth mentioning that when the rotary suction component sucks the external gas and particulate matter into the containing box, the temperature inside the containing box will rise, and the internal gas enters the cooler under the action of the recovery tube on the air pressure feeding unit, thereby converting the hot gas into cold air, and the cold air is output through the Z-shaped tube; at the same time, the high-temperature gas will pass through the storage box when it is discharged through the recovery tube, and the harmful gas can be purified under the action of the first filter plate and the second filter plate, so that the high-temperature gas is not polluted when entering the cooler, and the particulate matter can be isolated in the storage box through the second filter plate, avoiding clogging the cooler and affecting its normal use, and at the same time ensuring that the gas in the containing box is not polluted, thereby improving the use effect of the equipment; at the same time, it is prevented that the hot gas is discharged to the outside and causes the surrounding temperature to rise. It is worth mentioning that the hot gas contains harmful substances, so as to avoid affecting the surrounding environment, and at the same time ensure the health of the workers during welding; (4) The first filter plate provided in the containing box can divide the interior of the containing box into two areas, one of which is the working area where the blades are located, and the other is the storage area. The inhaled particles are blocked by the first filter plate and fall into the storage area, thereby preventing the particles from entering the working area and affecting the working state of the blades, so that the rotation of the blades is always smooth, further improving the effect of the equipment during welding; at the same time, the above description can also absorb the harmful gases generated by the equipment during welding, preventing these gases from floating around and affecting the health of the workers, thereby improving the environmental protection effect of the equipment during use, and reducing the safety hazards of the equipment during use; (5) The suction force continuously generated by the pressure box can collect these gases and particles all the time, avoiding the situation that when the containing box absorbs external particles, the adsorption effect is reduced due to the excessive accumulation of particles inside, thereby improving the endurance of the equipment during use, avoiding the need to frequently clean the particles in the containing box during welding, and improving the use effect of the equipment; at the same time, when the pressure plate is reset, the cooled gas can be introduced into the pressure box through the air inlet groove. It is worth mentioning that a valve can be provided on the pressure plate so that the cooled gas can enter the containing box or the pressure box to reduce the temperature of the particles, avoid the excessive temperature of several particles sticking together and causing pipeline blockage, and reduce the limitations of the equipment during use; (6) The gas at the top surface of the pressure box enters the gas outlet groove under the action of pressure, and then enters the circular square tube, so that the airbag at the output end is in an expanded state. It is worth mentioning that valves are provided at each pipeline and slot in the equipment, and the use state of the valve can be used according to actual factors; when the airbag expands to the maximum state, it means that the movement of the pressure square plate is close to the maximum height. At this time, the valve in the first square tube is changed from closed to open, so that all the gas in the airbag suddenly enters the pressure box through the first square tube, so that the particles adsorbed in the pressure box are pushed to the second square tube under the action of the airflow, and enter the storage box through the second square tube. When the pressure square plate is reset and moved, the valves at the second square tube, the first square tube and the gas outlet groove are all in a closed state. The particles that lose the action of the airflow fall freely into the auxiliary concave box, so that the collected particles are collected in a centralized manner, avoiding the existence of the containing square box affecting the collection effect of the equipment, so that the equipment can continuously collect the splashed particles for a long time during the welding process, improving the endurance of the equipment during use and reducing the limitations of the equipment during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0017] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the double-track pulley structure of the present invention; Figure 3 It is a cross-sectional view of a hollow cylinder of the present invention; Figure 4 This is a schematic diagram of the structure of the laser welding gun of the present invention; Figure 5 This is a schematic diagram of the internal structure of the containing square box of the present invention; Figure 6This is a cross-sectional view of the auxiliary ring groove of the present invention; Figure 7 is a cross-sectional view of the airbag of the present invention; Figure 8 It is a schematic diagram of the structure of the double-moving column of the present invention; Fig. 9 It is a cross-sectional view of the pressure square plate of the present invention; Fig.10 This is a schematic diagram of the positioning gear ring structure of the present invention; In the figure: 1, body; 2, connecting pipe; 3, laser welding gun; 4, winding reel; 5, cooler; 6, rotating motor; 7, double-track pulley; 8, first transmission belt; 9, rotating pulley; 10, rotating shaft; 11, rotating base; 12, containing square box; 13, diffuser nozzle; 14, rotating bevel gear; 15, driving bevel gear; 16, driving shaft; 17, first pulley; 18, second transmission belt; 19, second pulley; 20, driving shaft; 21, driving base plate; 22, blades; 23, first filter plate; 24, driving bevel gear; 25, driven bevel gear; 26, driven shaft; 27, driven base plate; 28, rotating disc; 29, compound moving column; 30, compound moving horizontal block; 31, compound moving slide column; 3 2. Compound moving substrate; 33. Bending square rod; 34. U-shaped square rod; 35. Pressure U rod; 36. Pressure square plate; 37. Pressure square box; 38. Bending pipe; 39. Z-shaped circular tube; 40. Auxiliary substrate; 41. Gas storage ring; 42. Auxiliary ring groove; 43. Annular pulley; 44. Ventilation circular groove; 45. Hollow cylinder; 46. High-pressure nozzle; 47. Positioning substrate; 48. Positioning shaft; 49. Fan blade; 50. Positioning gear; 51. Positioning gear ring; 52. Round square tube; 53. Air bag; 54. First square tube; 55. Second square tube; 56. Storage box; 57. Auxiliary concave box; 58. Second filter plate; 59. Recovery tube; 60. Limiting square column; 61. Limiting square tube; 62. Contact piece. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] Example, by Figures 1 to 10The present invention comprises a main body 1, a connecting tube 2 and a laser welding gun 3. A winding drum 4 is arranged on the top of the main body 1. The winding drum 4 is used to wind up the connecting tube 2. One end of the connecting tube 2 is wound on the winding drum 4, and the other end is connected to the side of the laser welding gun 3 away from its output end. The laser welding gun 3 is provided with a rotary suction component, which is used to absorb the spattered particles generated by the laser welding gun 3 during the welding process of the workpiece. A cooler 5 is arranged on the top of the laser welding gun 3 through bolts, and a multi-directional temperature control mechanism is arranged on the cooler 5. The multi-directional temperature control mechanism is used to control the temperature at the output end of the laser welding gun 3. The rotary suction component comprises a rotating motor 6, the rotating motor 6 is arranged on the top of the laser welding gun 3 by bolts; a double-track pulley 7 is installed on the output end of the rotating motor 6, and two first transmission belts 8 are connected to the double-track pulley 7; two rotating pulleys 9 are symmetrically arranged on both sides of the laser welding gun 3, and the two first transmission belts 8 are respectively connected to the two rotating pulleys 9; a rotating shaft 10 is installed at the bottom end of the two rotating pulleys 9, and a double-motion expansion unit is arranged on the rotating shaft 10, and the double-motion expansion unit is used to increase the space for the device to absorb particulate matter; a rotating base 11 is installed on the rotating shaft 10, and the rotating base 11 is arranged on the laser welding gun 3; the two sides of the laser welding gun 3 are fixed by bolts A receiving box 12 is provided, and the side of the receiving box 12 away from the connecting pipe 2 is open, and a diffuser nozzle 13 is installed at the opening; the end of the rotating shaft 10 away from the rotating pulley 9 passes through the receiving box 12 and is connected to a rotating bevel gear 14, and the rotating bevel gear 14 is located in the receiving box 12; the rotating bevel gear 14 is meshed and connected to a driving bevel gear 15, and a driving shaft 16 is installed on the side of the driving bevel gear 15 away from the diffuser nozzle 13, and the driving shaft 16 is transmission-connected to the inner side wall of the receiving box 12; a first pulley 17 is installed on the driving shaft 16; the first pulley 17 is connected to a second transmission belt 18, and the second transmission belt 18 is connected to A second pulley 19 is connected; the second transmission belt 18 is slidably matched with the first pulley 17 and the second pulley 19; the driving bevel gear 15 and the second pulley 19 are both installed with a driving shaft 20 on the side close to the diffuser nozzle 13, and the two driving shafts 20 are commonly connected with a driving substrate 21, and the two sides of the driving substrate 21 are fixedly connected to the inner side wall of the containing square box 12; a plurality of blades 22 are installed on the ends of the two driving shafts 20 away from the second pulley 19; a first filter plate 23 is also installed in the containing square box 12, and the first filter plate 23 divides the interior of the containing square box 12 into two areas, and the blades 22 are located in the area away from the diffuser nozzle 13; When the staff operates the laser welding gun 3 to weld the workpiece, there will be impurities such as rust or dust on the surface of the workpiece where it is required to be welded. Under the high temperature of the laser, these impurities will be quickly vaporized, burned or splashed, thereby generating a phenomenon similar to "sparks". This is because the violent reaction of the particles during welding causes the particles to splash after high temperature, so the "spark" phenomenon will be generated. At this time, the rotating motor 6 is started, so that the output end drives the double-track pulley 7 to rotate, and the two rotating pulleys 9 are driven to rotate under the action of the first transmission belt 8, so that the rotating bevel gear 14 in the accommodating square box 12 is driven to rotate through the rotating shaft 10, so that it meshes with the driving bevel gear 15 to rotate, and the driving shaft 16 and the first The pulley 17 and the second transmission belt 18 drive the second pulley 19 to rotate, so that the second pulley 19 and the driving bevel gear 15 drive the two active shafts 20 to rotate synchronously, so that the blades 22 thereon rotate. It is worth mentioning that the shape of the blades 22 is not a traditional straight plate shape, but has a certain curvature, so that the blades 22 can better capture and guide the flow of air when rotating, thereby increasing the flow rate and pressure difference of the air, thereby increasing the suction force, so that the blades 22 on the two active shafts 20 generate suction in the containing square box 12 when rotating, so that the external air pressure and the air pressure in the containing square box 12 remain inconsistent, so that the containing square box 12 is constantly in a negative pressure state. Gas always flows from places with high air pressure to places with low air pressure, so that external gas continuously enters the containing square box 12 through the diffusion nozzle 13, so that the above-mentioned splashed particles are sucked into the containing square box 12 along with the flow of air, so as to prevent these high-temperature particles from being scattered around the workpiece during welding and adhering to it after cooling, making it difficult to separate the two, resulting in the need for workers to spend time and energy to clean up these adhered impurities afterwards, reducing the work intensity of the workers, improving the use of the equipment and the welding effect, and at the same time preventing these splashed particles from contacting with the workers and causing harm to them, thereby improving the safety of the equipment during use and reducing the limitations of the equipment during use. At the same time, the first filter plate 23 provided in the containing box 12 can divide the interior of the containing box 12 into two areas, the area where the blade 22 is located is the working area, and the other is the storage area. The inhaled particles are blocked by the first filter plate 23 and fall into the storage area, preventing the particles from entering the working area and affecting the working state of the blade 22, so that the rotation of the blade 22 always remains smooth, further improving the effect of the equipment during welding; at the same time, through the above description, the harmful gases generated by the equipment during welding can also be absorbed to prevent these gases from floating around and affecting the health of the staff, thereby improving the environmental protection effect of the equipment during use and reducing the safety hazards of the equipment during use.

[0020] The compound-action expansion unit of the present embodiment includes an active bevel gear 24 arranged on the rotating shaft 10, the active bevel gear 24 is meshedly connected to the driven bevel gear 25, a driven rotating shaft 26 is installed on the driven bevel gear 25, a driven base plate 27 is installed on the driven rotating shaft 26, and the driven base plate 27 is arranged on the rotating base 11; a rotating disc 28 is installed on the end of the driven rotating shaft 26 away from the driven bevel gear 25, and a compound-action column 29 is installed on the side of the rotating disc 28 away from the driven bevel gear 25, a compound-action cross block 30 is slidably arranged on the compound-action column 29, a compound-action sliding column 31 is symmetrically arranged on the top of the compound-action cross block 30, and the two compound-action sliding columns 31 are slidably connected to the compound-action base plate 32 together, and the compound-action base plate 32 is arranged on the driven base plate 27; a bending square is installed at the bottom of the compound-action cross block 30 Rod 33, a U-shaped square rod 34 is installed on the end point of the bent square rod 33, and a pressure U rod 35 is installed on the opposite surface of the U-shaped square rod 34, and the end points of the two pressure U rods 35 are facing the containing square box 12 and are also installed with a pressure square plate 36; the top and bottom of the containing square box 12 are both provided with slots, and a pressure square box 37 is installed on the slot, and an air pressure feeding unit is arranged on the pressure square box 37; a plurality of feeding grooves are arranged on the opposite surfaces of the two pressure square boxes 37; an air inlet groove and an air outlet groove are arranged on the opposite back surfaces of the two pressure square boxes 37; the pressure square plate 36 is located in the pressure square box 37 and is slidably arranged; one end of a bent pipe 38 is installed on the cooler 5, and the other end of the bent pipe 38 is arranged on the pressure square box 37 and is connected to the air inlet groove; When the rotating shaft 10 rotates, the driving bevel gear 24 is driven to rotate, so that the driven bevel gear 25 is meshed with the rotating shaft 26, and the rotating disc 28 is driven to rotate, so that the reciprocating cylinder 29 on it moves back and forth on the reciprocating horizontal block 30, so that it moves back and forth on the reciprocating base plate 32 through two reciprocating sliding columns 31, and the two pressure U rods 35 are driven to move under the action of the bent square rod 33 and the U-shaped square rod 34, so that when one pressure U rod 35 moves away from the receiving square box 12, the other pressure U rod 35 moves close to the receiving square box 12 moves, so that the pressure square plate 36 on the pressure U rod 35 moves back and forth in the pressure square box 37. When the upper pressure square plate 36 moves upward, the lower pressure square plate 36 also moves upward, so that the upper pressure square plate 36 moves in the upper pressure square box 37, so that suction is generated inside the upper pressure square box 37, and the gas and particulate matter absorbed in the containing square box 12 enter the upper pressure square box 37 through a plurality of feeding slots. At this time, the lower pressure square plate 36 is in the lower pressure square box 37. When the pressure plate 36 moves inside, the thrust generated in the pressure box 37 below pushes the gas and particles in the containing box 12 to the pressure box 37 above, so that the pressure box 37 generating suction above can more conveniently absorb the pushed gas and particles into it. The reciprocating movement allows the pressure box 37 to collect these gases and particles all the time, avoiding the excessive accumulation of particles inside the containing box 12 when absorbing external particles, thereby reducing the adsorption effect, thereby improving the endurance of the equipment during use, avoiding the need for frequent cleaning of the particles in the containing box 12 during welding, and improving the use effect of the equipment; at the same time, the pressure square plate 36 can introduce the cooled gas into the pressure square box 37 through the air inlet groove when resetting. It is worth mentioning that a valve can be provided on the pressure square plate 36, so that the cooled gas can enter the containing box 12 or the pressure square box 37, so as to reduce the temperature of the particles, avoid the excessive temperature of several particles sticking together and causing pipeline blockage, and reduce the limitations of the equipment during use.

[0021] The multi-directional temperature control mechanism of this embodiment includes a Z-shaped circular tube 39 arranged on the cooler 5, and an auxiliary substrate 40 is installed on the Z-shaped circular tube 39, and the auxiliary substrate 40 is arranged on the laser welding gun 3; the end of the Z-shaped circular tube 39 away from the laser welding gun 3 is connected to a gas storage ring 41, and the gas storage ring 41 is arranged on the laser welding gun 3; the side of the gas storage ring 41 away from the laser welding gun 3 is provided with an auxiliary ring groove 42, and an annular pulley 43 is rotatably arranged on the auxiliary ring groove 42, and a plurality of ventilation grooves 44 are penetrated on the annular pulley 43; the side of the gas storage ring 41 away from the laser welding gun 3 is provided with a hollow cylinder 45 with the same number as the ventilation grooves 44, and the hollow cylinder 45 is close to the output end of the laser welding gun 3. A plurality of cooling grooves are arranged on the side wall; the hollow cylinder 45 is communicated with the ventilation groove 44; the Z-shaped circular tube 39 is communicated with the gas storage ring 41; a high-pressure nozzle 46 is installed on the side wall of the Z-shaped circular tube 39; a positioning substrate 47 is arranged on the auxiliary substrate 40, a positioning shaft 48 is installed on the positioning substrate 47, a plurality of fan blades 49 are installed on the positioning shaft 48, and the gas ejected from the output end of the high-pressure nozzle 46 acts on the fan blades 49; a positioning gear 50 is installed at one end of the positioning shaft 48 away from the positioning substrate 47, the positioning gear 50 is meshedly connected to the positioning gear ring 51, and the positioning gear ring 51 is arranged on the annular pulley 43, and the wheel groove of the annular pulley 43 is attached to the inner side wall of the auxiliary annular groove 42; The cooler 5 continuously delivers the cooling gas absorbed inside to the gas storage ring 41 through the Z-shaped circular tube 39. It is worth mentioning that the auxiliary ring groove 42 and the annular pulley 43 are rotatably arranged, and the annular pulley 43 closes the auxiliary ring groove 42, so that the gas flows into the hollow cylinder 45 through the ventilation circular groove 44, and continuously acts on the side wall of the output end of the laser welding gun 3 through a number of cooling grooves, so as to reduce the temperature at the output end of the laser welding gun 3, avoid high temperature accelerating the aging of key parts such as electronic components and optical components inside the laser welding gun 3, so that the temperature of the laser welding gun 3 during operation can be controlled within a suitable range, thereby improving the service life of the laser welding gun 3, and at the same time improving the stability and use effect of the laser welding gun 3 during use, and avoiding the sudden strike of the laser welding gun 3 during use due to high temperature. , so that the stability and reliability of the laser welding gun 3 when in use are guaranteed; at the same time, when in use, high-pressure gas can be ejected through the high-pressure nozzle 46 provided on the Z-shaped circular tube 39, and the high-pressure gas acts on a plurality of fan blades 49 to drive the positioning shaft 48 to rotate, so that the positioning gear 50 on it rotates and engages the positioning gear ring 51 to rotate, thereby driving the annular pulley 43 to rotate on the auxiliary ring groove 42, so that the hollow cylinder 45 on the annular pulley 43 rotates around the output end of the laser welding gun 3, so that the temperature at the output end of the laser welding gun 3 can be controlled in all directions, avoiding the local temperature at the output end of the laser welding gun 3 being too high due to the existence of a dead angle when controlling the temperature at the output end of the laser welding gun 3, affecting the welding operation, reducing the limitations of the equipment when in use, and further improving the welding effect of the equipment.

[0022] The air pressure feeding unit of this embodiment includes a round square tube 52, the input end of which is arranged on the receiving square box 12 and is connected to the air outlet groove; an air bag 53 is installed on the output end of the round square tube 52, and a first square tube 54 is installed on the air bag 53, and the first square tube 54 is arranged on the side of the receiving square box 12 close to the diffusion nozzle 13; a second square tube 55 is installed on the side of the receiving square box 12 away from the diffusion nozzle 13, and a material storage box 56 is installed on the second square tube 55, and the material storage box 56 is arranged on the top of the receiving square box 12; the bottom of the material storage box 56 is provided with an auxiliary concave box 5 7; A second filter plate 58 is installed in the material storage box 56; the second filter plate 58 is aligned with the side of the auxiliary concave box 57 away from the diffusion nozzle 13; a recovery tube 59 is provided on the side of the material storage box 56 away from the second square tube 55, and the recovery tube 59 is connected to the cooler 5; a limiting square column 60 is installed on the top of the pressure U rod 35; a limiting square cylinder 61 is provided on the inner top surface of the containing square box 12, and the limiting square cylinder 61 is located on the moving path of the limiting square column 60; a contact piece 62 is provided on the end of the limiting square column 60 close to the limiting square cylinder 61 and on the inner top surface of the limiting square cylinder 61; When the pressure square plate 36 moves in the direction away from the containing square box 12, the limiting square column 60 on the pressure U rod 35 will gradually enter the limiting square cylinder 61, guiding the movement of the pressure U rod 35 to prevent the pressure square plate 36 from shaking during the rising process, thereby improving the stability of the pressure square plate 36 during movement, and at the same time making the limiting square cylinder 61 and the contact piece 62 at the limiting square column 60 contact, thereby sending a signal to the controller to record the movement process of the pressure square plate 36, indicating that the pressure square plate 36 has moved up to the maximum height, so that the movement state of the pressure square plate 36 can be monitored to avoid deviations in the movement of the pressure square plate 36; at the same time, when the pressure square plate 36 moves in the pressure square box 37, the gas at the top surface of the pressure square box 37 is under pressure. Under the action of the air bag 53, it enters the air outlet groove and then enters the circular square tube 52, so that the air bag 53 at the output end is in an expanded state. It is worth mentioning that valves are provided at various pipes and slots in the equipment, and the use state of the valves can be used according to actual factors; when the air bag 53 expands to the maximum state, it means that the movement of the pressure square plate 36 is close to the maximum height. At this time, the valve in the first square tube 54 is changed from closed to open, so that the gas in the air bag 53 suddenly passes through the first square tube 54 into the pressure square box 37, so that the particles adsorbed into the pressure square box 37 are pushed to the second square tube 55 under the action of the airflow, and enter the storage square box 56 through the second square tube 55. When the pressure square plate 36 is reset and moved, the second square tube 54 is opened. 55. The valves at the first square tube 54 and the air outlet groove are both in a closed state. Without the effect of the airflow, the particles fall freely into the auxiliary concave box 57, so that the collected particles are collected centrally, avoiding the existence of the containing square box 12 affecting the collection effect of the equipment, so that the equipment can continue to collect the splashed particles for a long time during the welding process, thereby improving the endurance of the equipment during use and reducing the limitations of the equipment during use; it is worth mentioning that when the rotary suction component sucks the external gas and particles into the containing square box 12 together, it will cause the temperature in the containing square box 12 to rise, and the internal gas enters the cooler 5 under the action of the recovery tube 59 on the air pressure feeding unit, thereby converting the hot air into cold air, and this cold air The gas is output through the Z-shaped circular tube 39; at the same time, the high-temperature gas will pass through the storage box 56 when it is discharged through the recovery circular tube 59. Under the action of the first filter plate 23 and the second filter plate 58, the harmful gas can be purified, so that the high-temperature gas is not polluted when entering the cooler 5, and the particulate matter can be isolated in the storage box 56 through the second filter plate 58, so as to avoid clogging the cooler 5 and affecting its normal use, and at the same time ensure that the gas in the storage box 12 is not polluted, thereby improving the use effect of the equipment; at the same time, it is prevented that these hot gases are discharged to the outside world, causing the surrounding temperature to rise. It is worth mentioning that these hot gases contain harmful substances, so as to avoid affecting the surrounding environment, and at the same time ensure the health of the staff during welding.

[0023] The present invention also provides a laser welding method, comprising the following steps: S1. The workpiece can be welded by using the laser welding gun 3 on the body 1. Under the action of the connecting tube 2, the laser welding gun 3 has a wide working range and a high degree of freedom; S2. Under the action of the rotating suction assembly provided on the laser welding gun 3, the particles splashed during welding by the laser welding gun 3 are collected; S3. The output end of the laser welding gun 3 is prevented from overheating by a multi-directional temperature control mechanism, so as to control the ambient temperature of the output end of the laser welding gun 3.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device, comprising a body (1), a connecting tube (2) and a laser welding gun (3), wherein a winding reel (4) is arranged on the top of the body (1), the winding reel (4) is used to wind up the connecting tube (2), one end of the connecting tube (2) is wound on the winding reel (4), and the other end is connected to a side of the laser welding gun (3) away from its output end; characterized in that: The laser welding gun (3) is provided with a rotary suction control assembly, which is used to absorb flying particles generated by the laser welding gun (3) during the welding process of the workpiece; a cooler (5) is provided on the top of the laser welding gun (3) via bolts, and a multi-directional temperature control mechanism is provided on the cooler (5), which is used to control the temperature at the output end of the laser welding gun (3); The rotary suction assembly comprises a rotary motor (6), which is arranged on the top of the laser welding gun (3) by means of bolts; a double-track pulley (7) is installed on the output end of the rotary motor (6), and two first transmission belts (8) are connected to the double-track pulley (7); two rotary pulleys (9) are symmetrically arranged on both sides of the laser welding gun (3), and the two first transmission belts (8) are respectively connected to the two rotary pulleys (9); a rotary shaft (10) is installed at the bottom end of each of the two rotary pulleys (9), and a double-motion expansion unit is arranged on the rotary shaft (10), and the double-motion expansion unit is used to increase the space for the device to absorb particulate matter; a rotary base (11) is installed on the rotary shaft (10), and the rotary base (11) is arranged on the laser welding gun (3).

2. A laser welding device according to claim 1, characterized in that: A receiving box (12) is installed on both sides of the laser welding gun (3) by bolts. The side of the receiving box (12) away from the connecting pipe (2) is open, and a diffuser nozzle (13) is installed at the opening. The end of the rotating shaft (10) away from the rotating pulley (9) passes through the receiving box (12) and is connected to a rotating bevel gear (14). The rotating bevel gear (14) is located in the receiving box (12). The rotating bevel gear (14) is meshedly connected to a driving bevel gear (15). A driving shaft (16) is installed on the side of the driving bevel gear (15) away from the diffuser nozzle (13). The driving shaft (16) is in transmission connection with the inner side wall of the receiving box (12). A first pulley (17) is installed on the driving shaft (16).

3. A laser welding device according to claim 2, characterized in that: The first pulley (17) is connected to a second transmission belt (18), and the second transmission belt (18) is connected to a second pulley (19); the second transmission belt (18) is slidably matched with the first pulley (17) and the second pulley (19); a driving shaft (20) is installed on the side of the driving bevel gear (15) and the second pulley (19) close to the diffuser nozzle (13); the two driving shafts (20) are commonly connected to a driving substrate (21), and both sides of the driving substrate (21) are fixedly connected to the inner side wall of the containing box (12); a plurality of blades (22) are installed on the ends of the two driving shafts (20) away from the second pulley (19); a first filter plate (23) is also installed in the containing box (12), and the first filter plate (23) divides the interior of the containing box (12) into two areas, and the blades (22) are located in the area away from the diffuser nozzle (13).

4. The laser welding equipment according to claim 1, characterized in that: The compound-movement expansion unit comprises an active bevel gear (24) arranged on a rotating shaft (10), the active bevel gear (24) meshingly connected to a driven bevel gear (25), a driven rotating shaft (26) mounted on the driven bevel gear (25), a driven base plate (27) mounted on the driven rotating shaft (26), and the driven base plate (27) arranged on a rotating base (11); a rotating disc (28) is mounted on one end of the driven rotating shaft (26) away from the driven bevel gear (25), a compound-movement column (29) is mounted on one side of the rotating disc (28) away from the driven bevel gear (25), a compound-movement cross block (30) is slidably arranged on the compound-movement column (29), a compound-movement sliding column (31) is symmetrically arranged on the top of the compound-movement cross block (30), two compound-movement sliding columns (31) are slidably connected to a compound-movement base plate (32), and the compound-movement base plate (32) is arranged on the driven base plate (27).

5. A laser welding device according to claim 4, characterized in that: The bottom of the reciprocating cross block (30) is provided with a bent square rod (33), the end point of the bent square rod (33) is provided with a U-shaped square rod (34), and the opposite surface of the U-shaped square rod (34) is provided with a pressure U rod (35), the end points of the two pressure U rods (35) are both facing the receiving square box (12) and are also provided with a pressure square plate (36); the top and bottom of the receiving square box (12) are provided with a slot, and a pressure square box (37) is provided on the slot, and the pressure square box (37) is provided with an air pressure feeding unit; a plurality of feeding grooves are provided on the opposite surfaces of the two pressure square boxes (37); an air inlet groove and an air outlet groove are provided on the opposite back surfaces of the two pressure square boxes (37); the pressure square plate (36) is located on the pressure square box (37) and is slidably arranged; one end of a bent pipe (38) is installed on the cooler (5), and the other end of the bent pipe (38) is arranged on the pressure square box (37) and is connected to the air inlet groove.

6. The laser welding equipment according to claim 1, characterized in that: The multi-directional temperature control mechanism comprises a Z-shaped circular tube (39) arranged on the cooler (5), an auxiliary substrate (40) being mounted on the Z-shaped circular tube (39), and the auxiliary substrate (40) being arranged on the laser welding gun (3); an end of the Z-shaped circular tube (39) away from the laser welding gun (3) is connected to a gas storage ring (41), and the gas storage ring (41) is arranged on the laser welding gun (3); an auxiliary ring groove (42) is provided on a side of the gas storage ring (41) away from the laser welding gun (3), and the auxiliary ring groove (42) is provided on the side of the gas storage ring (41) away from the laser welding gun (3). 2) is rotatably provided with an annular pulley (43), and a plurality of ventilation grooves (44) are penetrated through the annular pulley (43); a hollow cylinder (45) having the same number as the ventilation grooves (44) is provided on a side of the gas storage ring (41) away from the laser welding gun (3), and a plurality of cooling grooves are provided on a side wall of the hollow cylinder (45) close to the output end of the laser welding gun (3); the hollow cylinder (45) is communicated with the ventilation grooves (44); and the Z-shaped circular tube (39) is communicated with the gas storage ring (41).

7. The laser welding equipment according to claim 6, characterized in that: A high-pressure nozzle (46) is mounted on the side wall of the Z-shaped circular tube (39); a positioning substrate (47) is provided on the auxiliary substrate (40); a positioning shaft (48) is mounted on the positioning substrate (47); a plurality of fan blades (49) are mounted on the positioning shaft (48); gas ejected from the output end of the high-pressure nozzle (46) acts on the fan blades (49); a positioning gear (50) is mounted on the end of the positioning shaft (48) away from the positioning substrate (47); the positioning gear (50) is meshingly connected to a positioning gear ring (51); the positioning gear ring (51) is arranged on an annular pulley (43); and a wheel groove of the annular pulley (43) is fitted on the inner side wall of the auxiliary annular groove (42).

8. The laser welding equipment according to claim 5, characterized in that: The air pressure feeding unit comprises a circular square tube (52), the input end of the circular square tube (52) being arranged on the containing square box (12) and being communicated with the air outlet groove; an air bag (53) being installed on the output end of the circular square tube (52), a first square tube (54) being installed on the air bag (53), the first square tube (54) being arranged on a side of the containing square box (12) close to the diffuser nozzle (13); a second square tube (55) being installed on a side of the containing square box (12) away from the diffuser nozzle (13), a material storage square box (56) being installed on the second square tube (55), the material storage square box (56) being arranged on the top of the containing square box (12); an auxiliary concave box (57) being provided at the bottom of the material storage square box (56); and a second filter plate (58) being installed in the material storage square box (56).

9. The laser welding equipment according to claim 8, characterized in that: The second filter plate (58) is aligned with a side of the auxiliary concave box (57) away from the diffusion nozzle (13); a recovery round tube (59) is provided on a side of the material storage square box (56) away from the second square tube (55), and the recovery round tube (59) is connected to the cooler (5); a limiting square column (60) is installed on the top of the pressure U rod (35); a limiting square cylinder (61) is provided on the inner top surface of the containing square box (12), and the limiting square cylinder (61) is located on the moving path of the limiting square column (60); and a contact piece (62) is provided on one end of the limiting square column (60) close to the limiting square cylinder (61) and on the inner top surface of the limiting square cylinder (61).

10. A laser welding method, using the laser welding device as claimed in claim 1, characterized in that: Includes steps: S1. The workpiece can be welded using the laser welding gun (3) on the main body (1). Under the action of the connecting pipe (2), the laser welding gun (3) has a wide working range and a high degree of freedom; S2. Under the action of the rotating suction assembly provided on the laser welding gun (3), particles splashed during welding by the laser welding gun (3) are collected; S3. The output end of the laser welding gun (3) is prevented from overheating by a multi-directional temperature control mechanism, so as to control the ambient temperature of the output end of the laser welding gun (3).

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