Laser welding machine for alloy casting repair

Abstract

The invention relates to the field of welding, in particular to a laser welding machine for alloy casting repair, which comprises a laser repair machine. The device further comprises an electric push rod, a supporting plate, a connecting rod, a connecting plate, a metal net and the like. The laser repairing machine is connected with an electric push rod; the telescopic end of the electric push rod is fixedly connected with a supporting plate. The supporting plate is connected with a connecting rod; the connecting rod is fixedly connected with two connecting plates; and the two connecting plates are jointly and fixedly connected with a metal net. An external hot air pump is controlled to convey high-temperature hot air into an air injection cavity through a hot air pipe, the high-temperature hot air in the air injection cavity is sprayed to the welding face of a workpiece from an opened round hole, then the welding face of the workpiece is preheated, the hot air is limited through a limiting plate coated with a heat insulation layer and elastic cloth made of a heat insulation material, and the welding face of the workpiece is preheated. And hot air is blown to the welding surface of the workpiece more intensively, so that the preheating effect is improved.

Description

Technical Field

[0001] The invention relates to the field of welding, and in particular to a laser welding machine for repairing alloy castings. Background Art

[0002] In the casting process of castings, there will inevitably be casting defects such as small pores, tiny slag inclusions, sand holes, etc. At present, laser welding is generally used to repair the defects of castings to reduce costs and ensure the normal use of castings in the later stage. For example, Chinese patent publication number: CN117182310B discloses a casting defect laser welding repair device and repair method, which is provided with a barrel, and the barrel moves with the mounting seat. During welding, powder is first fed into the welding position, and gravity feeding is adopted. The auxiliary feeding mechanism controls the feeding process, so that the powder falls evenly on the defect and avoids powder dispersion.

[0003] However, existing laser welding equipment relies on the powder's own gravity to make the powder fall onto the surface to be welded of the workpiece. When welding and repairing the inner wall of the circular hole of the workpiece, some cast workpieces are inconvenient to rotate and the welding surface of the circular hole of the workpiece has an upward area, so the powder cannot fall onto the upward welding surface in the circular hole under its own gravity, and thus the existing laser welding equipment has great limitations. Summary of the invention

[0004] In order to overcome the disadvantages of existing laser welding equipment having great limitations when welding and repairing the inner wall of a circular hole of a workpiece, the present invention provides a laser welding machine for repairing alloy castings, because some cast workpieces are inconvenient to rotate and the welding surface of the circular hole of the workpiece has an upward area, so that powder cannot fall onto the upward welding surface in the circular hole under its own gravity.

[0005] Technical solution: A laser welding machine for repairing alloy castings, including a laser repair machine; also including an electric push rod, a support plate, a connecting rod, a connecting plate, a metal mesh, a circular ring, a rectangular plate, a rotating plate, a nozzle, an air jet assembly and a driving assembly; the laser repair machine is connected to an electric push rod; the telescopic end of the electric push rod is fixedly connected to a support plate; the support plate is connected to a connecting rod; the connecting rod is fixedly connected to two connecting plates; the two connecting plates are jointly fixed to a metal mesh; the two connecting plates are jointly fixed to a circular ring, and the circular ring is located on the lower side of the metal mesh; the circular ring is provided with a plurality of circular holes; the two connecting plates are jointly fixed to a rectangular plate, and the rectangular plate is in contact with the metal mesh; the two connecting plates are jointly rotatably connected to a rotating plate, and the rotating plate is in contact with the metal mesh; the rotating plate is fixed to a nozzle; the two connecting plates are jointly connected to an air jet assembly for spraying powder adsorbed by the metal mesh onto the fixed surface of the workpiece; the support plate is connected to a driving assembly for driving the rotating plate to rotate, and the driving assembly is connected to the connecting rod.

[0006] Furthermore, the jet assembly includes an air intake pipe, an annular guide rail, an electric block, a fixed plate, a spring ball and a folding sheet; two connecting plates and the inner side of the circular ring together form a jet chamber; the connecting plate is fixedly connected to the air intake pipe, and the air intake pipe is connected to the jet chamber; the circular ring is fixedly connected to two annular guide rails; each annular guide rail is slidably connected to an electric block; the two electric blocks are jointly fixedly connected to a fixed plate; the fixed plate is fixedly connected to a number of spring balls, and the number and position of the spring balls correspond to the circular holes; the circular ring is fixedly connected to one end of the folding sheet, and the other end of the folding sheet is fixedly connected to the fixed plate.

[0007] Furthermore, the nozzle is arranged at an inclination.

[0008] Furthermore, it also includes a rubber rod; the rotating plate is rotatably connected to the rubber rod, the rectangular plate is fixedly connected to another rubber rod, and the rubber rod is in contact with the metal mesh.

[0009] Furthermore, the driving assembly includes a circular tube, a driver and an electric drive component; the connecting rod is rotatably connected to the circular tube; the supporting plate is connected to the driver, and the driver consists of a motor, a gear and a gear ring; the supporting plate is fixedly connected to the motor and the output shaft of the motor is fixedly connected to the gear, and the gear ring is fixedly connected to the circular tube, and the gear is meshed with the gear ring; the supporting plate is fixedly connected to the electric drive component, and the output shaft of the electric drive component is fixedly connected to the connecting rod.

[0010] Furthermore, it also includes a limit plate and an elastic cloth; the rectangular plate is fixedly connected to a limit plate; the rotating plate is fixedly connected to another limit plate; two elastic cloths are fixedly connected between the two limit plates, and the elastic cloth is slidably connected to the connecting plate.

[0011] Furthermore, the limiting plate is an airbag plate, and the stretch fabric is a breathable material.

[0012] Furthermore, it also includes a hot air pipe; the connecting plate is fixedly connected with the hot air pipe, and the hot air pipe is connected with the jet cavity, and the surface of the limiting plate is coated with a heat insulation layer, and the elastic cloth is a heat insulation material.

[0013] Furthermore, it also includes an electric skateboard, a hollow tube and a folding cloth; the two connecting plates are slidably connected to the electric skateboard; the electric skateboard is fixedly connected to the hollow tube, and the hollow tube runs through the electric skateboard; the electric skateboard is fixedly connected to the folding cloth, and the folding cloth is fixedly connected to the rectangular plate.

[0014] Furthermore, it also includes a brush rod; the rotating plate is fixedly connected with the brush rod, and the brush rod is in contact with the metal mesh.

[0015] The beneficial effects of the present invention are as follows: the present invention controls the external electrode wire to cut off the power to the metal mesh so that the metal mesh loses static electricity. At this time, the powder with static electricity is temporarily attached to the metal mesh. Subsequently, the annular guide rail is controlled to make the electric block drive the fixed plate and the spring ball to rotate clockwise from the front to the back, so that the spring ball pops out and leaves the circular hole. The fixed plate squeezes the folding sheet, and the folding sheet opens part of the circular hole after folding, until the positions of the fixed plate and the spring ball correspond to the rotating plate, and the spring ball that stops rotating is stuck in the circular hole again under the action of elastic force. At this time, the gas in the jet chamber is ejected from the opened circular hole along the radial direction of the circular ring, and the ejected gas blows the powder on the metal mesh along the radial direction of the circular ring to the surface to be welded in the workpiece hole.

[0016] The present invention controls an external hot air pump to transport high-temperature hot air into the jet chamber through a hot air pipe. The high-temperature hot air in the jet chamber is ejected from the opened circular hole onto the welding surface of the workpiece, thereby preheating the welding surface on the workpiece. A limiting plate coated with a heat insulation layer and an elastic cloth made of a heat insulation material limit the hot air, so that the hot air is blown onto the welding surface of the workpiece more concentratedly, thereby improving the preheating effect.

[0017] After the metal mesh is electrified to generate static electricity, the impurities on the inner wall of the workpiece hole are adsorbed onto the metal mesh under the action of the electrostatic force, thereby cleaning the welding surface of the inner wall of the workpiece hole; then, the electric slide is controlled to drive the hollow tube to rotate counterclockwise from the front to the back, and the electric slide pulls out and unfolds the folding cloth that is initially in a folded state, and seals the area between the two connecting plates and the upper side of the metal mesh; then, the metal mesh is powered off, and the impurities attached to the metal mesh lose the electrostatic adsorption effect and fall onto the folding cloth; then, the external suction pump is controlled to start, and the area between the two connecting plates and the upper side of the metal mesh is sucked through the hollow tube, thereby sucking away the impurities that have fallen onto the folding cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure disclosed by the laser welding machine for repairing alloy castings of the present invention; Figure 2 It is a schematic diagram of the combined partial structure of the electric push rod, the support plate, the connecting rod, the connecting plate, the limit plate, the elastic cloth and the driver disclosed in the laser welding machine for repairing alloy castings of the present invention; Figure 3 It is a schematic diagram of the combined partial structure of the connecting rod, connecting plate, metal mesh, rectangular plate, rotating plate, nozzle, air intake pipe, limit plate, elastic cloth, hot air pipe, electric skateboard, hollow tube, folded cloth, and airbag sheet disclosed by the laser welding machine for repairing alloy castings of the present invention; Figure 4 It is a schematic diagram of the combined partial structure of the metal mesh, circular ring, rectangular plate, rotating plate, nozzle, and jet assembly disclosed by the laser welding machine for repairing alloy castings of the present invention; Figure 5 It is a schematic diagram of the combined partial structure of the ring and the jet assembly disclosed by the laser welding machine for repairing alloy castings of the present invention; Figure 6 It is a first partial state diagram of the electric slide plate, hollow tube and folded cloth disclosed by the laser welding machine for alloy casting repair of the present invention; Figure 7 This is a second partial state diagram of the electric slide plate, hollow tube, and folded cloth disclosed by the laser welding machine for repairing alloy castings of the present invention.

[0019] In the above drawings: 1-workbench, 2-clamp, 3-mounting plate, 4-laser welding gun, 5-workpiece, 101-electric push rod, 102-support plate, 103-connecting rod, 104-connecting plate, 105-metal mesh, 106-circular ring, 107-rectangular plate, 108-rotating plate, 109-nozzle, 1010-intake pipe, 1011-annular guide rail, 1012-electric block, 1013-fixed plate, 1014-spring ball, 1015-rubber rod, 1016-circular tube, 1017-driver, 1018-folding sheet, 1019-electric drive part, 201-limiting plate, 202-elastic cloth, 203-hot air pipe, 301-electric skateboard, 302-hollow tube, 303-folded cloth, 304-airbag sheet, 305-brush rod, 1061-circular hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0021] Example 1 A laser welding machine for alloy casting repair, such as Figure 1-Figure 7 As shown, a laser repair machine is included; The laser repair machine also includes an electric push rod 101, a support plate 102, a connecting rod 103, a connecting plate 104, a metal mesh 105, a circular ring 106, a rectangular plate 107, a rotating plate 108, a nozzle 109, an injection assembly and a driving assembly; the laser repair machine is connected to the electric push rod 101; the telescopic end of the electric push rod 101 is fixedly connected to the support plate 102; the support plate 102 is connected to the connecting rod 103; the connecting rod 103 is fixedly connected to two connecting plates 104; the two connecting plates 104 are jointly fixedly connected to the metal mesh 105; the two connecting plates 104 are jointly fixedly connected to the circular ring 106, and the circular ring 106 is located at the metal mesh 105. The lower side of the mesh 105; the circular ring 106 is provided with a plurality of circular holes 1061; the two connecting plates 104 are fixedly connected with a rectangular plate 107, and the rectangular plate 107 is in contact with the metal mesh 105; the two connecting plates 104 are connected with a rotating plate 108 for rotation, and the rotating plate 108 is in contact with the metal mesh 105; the rotating plate 108 is fixedly connected with a nozzle 109; the two connecting plates 104 are connected with a jet assembly for spraying the powder adsorbed by the metal mesh 105 onto the welding surface of the workpiece 5; the support plate 102 is connected with a driving assembly for driving the rotating plate 108 to rotate, and the driving assembly is connected with the connecting rod 103.

[0022] The laser repair machine includes a workbench 1, a clamp 2, a mounting plate 3 and a laser welding gun 4; the workbench 1 is connected to the clamp 2; the workbench 1 is fixedly connected to the mounting plate 3, and the electric push rod 101 is fixedly connected to the mounting plate 3; the mounting plate 3 is bolted to the laser welding gun 4, and the laser welding gun 4 is provided with a manipulator.

[0023] The jet assembly includes an air intake pipe 1010, an annular guide rail 1011, an electric block 1012, a fixed plate 1013, a spring ball 1014 and a folding sheet 1018; the two connecting plates 104 and the inner side of the circular ring 106 together form a jet chamber; the connecting plate 104 is fixedly connected to the air intake pipe 1010, and the air intake pipe 1010 is communicated with the jet chamber; the circular ring 106 is fixedly connected to two annular guide rails 1011; each annular guide rail 1011 is slidably connected to an electric block 1012; the two electric blocks 1012 are jointly fixedly connected to a fixed plate 1013; the fixed plate 1013 is fixedly connected to at least eight spring balls 1014, and the number and position of the spring balls 1014 correspond to the circular hole 1061; the circular ring 106 is fixedly connected to one end of the folding sheet 1018, and the other end of the folding sheet 1018 is fixedly connected to the fixing plate 1013.

[0024] The nozzle 109 is arranged at an angle so that the powder is sprayed toward the metal mesh 105 in a concentrated manner, thereby reducing the dispersion of the powder and increasing the adhesion rate of the powder on the metal mesh 105 .

[0025] It also includes a rubber rod 1015 ; the rotating plate 108 is rotatably connected to the rubber rod 1015 , and the rectangular plate 107 is fixedly connected to another rubber rod 1015 , and the rubber rod 1015 is in contact with the metal mesh 105 .

[0026] The driving assembly includes a circular tube 1016, a driver 1017 and an electric drive component 1019; the connecting rod 103 is rotatably connected to the circular tube 1016; the support plate 102 is connected to the driver 1017, and the driver 1017 is composed of a motor, a gear and a gear ring; the support plate 102 is fixedly connected to the motor and the output shaft of the motor is fixedly connected to the gear, and the gear ring is fixedly connected to the circular tube 1016, and the gear is meshed with the gear ring; the support plate 102 is fixedly connected to the electric drive component 1019, and the output shaft of the electric drive component 1019 is fixedly connected to the connecting rod 103.

[0027] When in use, connect the external pump to the nozzle 109, connect the external air pump to the air inlet pipe 1010, connect the external electrode wire to the metal mesh 105, then manually put the workpiece 5 to be processed into the clamp 2 for fixing, then control the electric push rod 101 to make the support plate 102 drive the connecting rod 103 and the parts thereon to move backward until the area between the two connecting plates 104 is located at the welding surface of the inner hole of the workpiece 5, in the initial state, the rectangular plate 107 and the rotating plate 108 are in contact with each other, the folding sheet 1018 seals all the circular holes 1061, and the spring ball 1014 is located in the circular hole 1061, then control the external electrode wire to energize the metal mesh 105, so that the metal mesh 105 generates static electricity, then control the external air pump to input gas into the jet chamber formed by the two connecting plates 104 and the inner side of the ring 106 through the air inlet pipe 1010; Subsequently, the electric drive component 1019 is controlled to make the connecting rod 103 drive the connecting plate 104 and the parts thereon to rotate, so that the rectangular plate 107 is aligned with the starting point of the welding surface on the workpiece 5. Next, the motor of the control driver 1017 is started, and the gear is driven to rotate through the output shaft of the motor. The gear drives the circular tube 1016, the rotating plate 108, and the nozzle 109 to rotate clockwise from the front to the back. At this time, the spacing between the rectangular plate 107 and the rotating plate 108 gradually increases. At the same time, the external pump is controlled to transport the powder into the nozzle 109. After the powder is ejected from the nozzle 109, it passes through the gap between the rectangular plate 107 and the rotating plate 108 and is sprayed onto the metal mesh 105 with static electricity, thereby making the powder adhere to the metal mesh 105 until the rotating plate 108 rotates to the spacing between the rectangular plate 107 and the rotating plate 108 and aligns with the end point of the welding surface on the workpiece 5. Subsequently, the external electrode wire is controlled to cut off the power to the metal mesh 105, so that the metal mesh 105 loses static electricity. At this time, the powder with static electricity temporarily adheres to the metal mesh 105. Subsequently, the annular guide rail 1011 is controlled to make the electric block 1012 drive the fixed plate 1013 and the spring ball 1014 to rotate clockwise from the front to the back, so that the spring ball 1014 pops out and detaches from the circular hole 1061. The fixed plate 1013 squeezes the folding sheet 1018, and the folding sheet 1018 partially opens the circular hole 1061 after folding, until the positions of the fixed plate 1013 and the spring ball 1014 correspond to the rotating plate 108, and then the rotation stops. The rotating spring ball 1014 is again stuck into the circular hole 1061 under the action of elastic force. At this time, the gas in the jet chamber is ejected from the opened circular hole 1061 along the radial direction of the circular ring 106. The ejected gas blows the powder on the metal mesh 105 along the radial direction of the circular ring 106 to the surface to be welded in the hole of the workpiece 5. Since the powder carries static electricity, the powder will adhere to the welding surface of the workpiece 5 and will not be blown around by the gas. Then, the robot is controlled to drive the laser welding gun 4 to perform laser welding on the welding surface of the inner wall of the hole of the workpiece 5 with powder attached. The high temperature causes the powder to melt and coat the defective area on the workpiece 5, thereby repairing the workpiece 5.

[0028] To prevent static electricity from being transferred to the rectangular plate 107 and the rotating plate 108 after the metal mesh 105 is energized, causing powder to adhere to the facing surfaces of the rectangular plate 107 and the rotating plate 108, rubber rods 1015 are provided between the rectangular plate 107 and the rotating plate 108 and the metal mesh 105 to isolate static electricity.

[0029] Example 2 On the basis of Example 1, Figure 2 and Figure 3 As shown, it also includes a limit plate 201 and an elastic cloth 202; the rectangular plate 107 is fixedly connected to a limit plate 201; the rotating plate 108 is fixedly connected to another limit plate 201; two elastic cloths 202 are fixedly connected between the two limit plates 201, and the elastic cloth 202 is slidably connected to the connecting plate 104.

[0030] The limiting plate 201 is an airbag plate, and the elastic fabric 202 is a breathable material.

[0031] It also includes a hot air pipe 203; the hot air pipe 203 is fixedly connected to the connecting plate 104, and the hot air pipe 203 is connected to the jet cavity, and the surface of the limiting plate 201 is coated with a heat insulation layer, and the elastic cloth 202 is a heat insulation material.

[0032] The external air pump is connected to the limiting plate 201, and the external hot air pump is connected to the hot air pipe 203. When the gas ejected from the jet chamber through the opened circular hole 1061 blows the powder on the metal mesh 105 along the radial direction of the circular ring 106 to the welding surface in the hole of the workpiece 5, the limiting plate 201 and the elastic cloth 202 limit the ejected gas and powder mixture, reduce the dispersion rate of the gas and powder mixture, make the gas and powder mixture more concentratedly blown to the welding surface in the hole of the workpiece 5, and improve the uniformity of the powder adhesion to the inner wall of the hole of the workpiece 5.

[0033] In order to ensure that the powder adheres to the welding surface area in the hole of the workpiece 5 and is not blown to other areas of the inner wall of the hole of the workpiece 5 by the gas, the external air pump is controlled to start and the limiting plate 201 of the airbag plate is inflated. After the limiting plate 201 expands and contacts with the inner wall of the hole of the workpiece 5, the limiting plate 201 pulls the elastic cloth 202 to expand, thereby adapting to the workpiece 5 of different apertures, and then the limiting plate 201 and the elastic cloth 202 close the area through which the gas and powder mixture passes, and the powder is limited, and the gas can come out from the breathable elastic cloth 202, further improving the adhesion effect of the powder on the inner wall of the hole of the workpiece 5.

[0034] Before laser welding the workpiece 5, the welding surface on the workpiece 5 is preheated to enhance the adhesion effect of the powder on the welding surface of the workpiece 5. Therefore, before the nozzle 109 sprays the powder onto the metal mesh 105, the driver 1017 is controlled to rotate the rotating plate 108 until the interval between the rectangular plate 107 and the rotating plate 108 is aligned with the welding surface on the workpiece 5, and the annular guide rail 1011 is controlled to open part of the circular hole 1061 on the fixed plate 1013, and the external air pump is controlled to make the limit plate 201 and the metal mesh 105 aligned. The workpiece 5 contacts the inner wall of the hole. At this time, the external hot air pump is controlled to transport high-temperature hot air into the jet chamber through the hot air pipe 203. The high-temperature hot air in the jet chamber is ejected from the opened circular hole 1061 to the welding surface of the workpiece 5, thereby preheating the welding surface on the workpiece 5. The limiting plate 201 coated with a heat insulation layer and the elastic cloth 202 made of heat insulation material limit the hot air, so that the hot air is blown onto the welding surface of the workpiece 5 more concentratedly, thereby improving the preheating effect. After that, the hot air slowly comes out from the breathable elastic cloth 202.

[0035] Example 3 On the basis of Example 2, Figure 3 and Figure 6-Figure 7 As shown, it also includes an electric skateboard 301, a hollow tube 302 and a folded cloth 303; the two connecting plates 104 are slidably connected to the electric skateboard 301; the electric skateboard 301 is fixedly connected to the hollow tube 302, and the hollow tube 302 passes through the electric skateboard 301; the electric skateboard 301 is fixedly connected to the folded cloth 303, and the folded cloth 303 is fixedly connected to the rectangular plate 107.

[0036] The rotating plate 108 also includes a brush rod 305 ; the brush rod 305 is fixedly connected to the rotating plate 108 , and the brush rod 305 is in contact with the metal mesh 105 .

[0037] The electric skateboard 301 also includes an airbag sheet 304 ; the airbag sheet 304 is fixedly connected to the electric skateboard 301 , and the surface of the airbag sheet 304 is coated with a heat insulation layer.

[0038] The external suction pump is connected to the hollow tube 302. Before laser welding, there will be impurities on the inner wall of the hole 5 of the workpiece, which will affect the adhesion effect of the powder and further affect the quality of laser welding. Therefore, before the rotating plate 108 rotates away from the rectangular plate 107, after the metal mesh 105 is energized to generate static electricity, the impurities on the inner wall of the hole 5 of the workpiece are adsorbed onto the metal mesh 105 under the action of the static electricity, thereby cleaning the welding surface of the inner wall of the hole 5 of the workpiece. Next, the electric slide 301 is controlled to drive the hollow tube 302 to rotate counterclockwise from the front to the back. The electric slide 301 pulls out the folded cloth 303 that is initially in a folded state and unfolds it, sealing the area between the two connecting plates 104 and the upper side of the metal mesh 105, as shown in FIG. Figure 6 As shown, the metal mesh 105 is then powered off, so that the impurities attached to the metal mesh 105 lose their electrostatic adsorption effect and fall onto the folded cloth 303. Subsequently, the external suction pump is controlled to start, and the area between the two connecting plates 104 and the upper side of the metal mesh 105 is sucked through the hollow tube 302, so that the impurities that fall onto the folded cloth 303 are sucked away. Afterwards, the driver 1017 is controlled to drive the rotating plate 108 and the brush rod 305 to rotate, so that the brush rod 305 scrapes the impurities remaining on the metal mesh 105 onto the folded cloth 303, thereby improving the impurity removal effect.

[0039] During laser welding, debris will fall, and the debris will fall into the powder area below the laser welding gun 4, which will affect the quality of laser welding. Therefore, before the laser welding gun 4 welds the welding surface of the workpiece 5 with powder attached, the electric slide 301 is controlled to drive the airbag sheet 304 to rotate counterclockwise from the front to the back until the airbag sheet 304 is located below the laser welding gun 4. Then, the external air pump is controlled to start and inflate the airbag sheet 304, so that the airbag sheet 304 expands and unfolds to the inner wall of the hole of the workpiece 5, and the electric slide 301 pulls out the folded cloth 303 that is initially in a folded state and unfolds it. Figure 7 As shown, the airbag sheet 304 collects the fallen high-temperature debris.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A laser welding machine for alloy casting repair, including a laser repair machine; its characteristics are: The laser repair machine also includes an electric push rod (101), a support plate (102), a connecting rod (103), a connecting plate (104), a metal mesh (105), a circular ring (106), a rectangular plate (107), a rotating plate (108), a nozzle (109), an injection assembly and a driving assembly; the laser repair machine is connected to the electric push rod (101); the telescopic end of the electric push rod (101) is fixedly connected to the support plate (102); the support plate (102) is connected to the connecting rod (103); the connecting rod (103) is fixedly connected to two connecting plates (104); the two connecting plates (104) are jointly fixedly connected to the metal mesh (105); the two connecting plates (104) are jointly fixedly connected to the circular ring (106), and the circular ring (106) is located The metal mesh (105) is provided at the lower side; the circular ring (106) is provided with a plurality of circular holes (1061); the two connecting plates (104) are fixedly connected to a rectangular plate (107), and the rectangular plate (107) is in contact with the metal mesh (105); the two connecting plates (104) are rotatably connected to a rotating plate (108), and the rotating plate (108) is in contact with the metal mesh (105); the rotating plate (108) is fixedly connected to a nozzle (109); the two connecting plates (104) are connected to a jetting assembly for spraying powder adsorbed by the metal mesh (105) onto a fixed surface of a workpiece (5); the support plate (102) is connected to a driving assembly for driving the rotating plate (108) to rotate, and the driving assembly is connected to a connecting rod (103).

2. A laser welding machine for alloy casting repair according to claim 1, characterized in that: The jet assembly comprises an air intake pipe (1010), an annular guide rail (1011), an electric block (1012), a fixing plate (1013), a spring ball (1014) and a folding sheet (1018); two connecting plates (104) and the inner side of the annular ring (106) together form an air injection chamber; the connecting plate (104) is fixedly connected to the air intake pipe (1010), and the air intake pipe (1010) is connected to the air injection chamber; the annular ring (106) is fixedly connected to two annular guide rails (1011); each Each of the annular guide rails (1011) is slidably connected to an electric block (1012); the two electric blocks (1012) are fixedly connected to a fixed plate (1013); the fixed plate (1013) is fixedly connected to a plurality of spring balls (1014), and the number and position of the spring balls (1014) correspond to the circular holes (1061); the circular ring (106) is fixedly connected to one end of a folding sheet (1018), and the other end of the folding sheet (1018) is fixedly connected to the fixed plate (1013).

3. A laser welding machine for alloy casting repair according to claim 2, characterized in that: The nozzle (109) is arranged at an inclination.

4. A laser welding machine for alloy casting repair according to claim 3, characterized in that: It also includes a rubber rod (1015); the rotating plate (108) is rotatably connected to the rubber rod (1015); the rectangular plate (107) is fixedly connected to another rubber rod (1015), and the rubber rod (1015) is in contact with the metal mesh (105).

5. A laser welding machine for alloy casting repair according to claim 4, characterized in that: The drive assembly comprises a circular tube (1016), a driver (1017) and an electric drive component (1019); the connecting rod (103) is rotatably connected to the circular tube (1016); the supporting plate (102) is connected to the driver (1017), and the driver (1017) is composed of a motor, a gear and a gear ring; the supporting plate (102) is fixedly connected to the motor, and the output shaft of the motor is fixedly connected to the gear, and the gear ring is fixedly connected to the circular tube (1016), and the gear and the gear ring are meshed; the supporting plate (102) is fixedly connected to the electric drive component (1019), and the output shaft of the electric drive component (1019) is fixedly connected to the connecting rod (103).

6. A laser welding machine for alloy casting repair according to claim 5, characterized in that: It also includes a limit plate (201) and an elastic cloth (202); the rectangular plate (107) is fixedly connected to a limit plate (201); the rotating plate (108) is fixedly connected to another limit plate (201); two elastic cloths (202) are fixedly connected between the two limit plates (201), and the elastic cloths (202) are slidably connected to the connecting plate (104).

7. A laser welding machine for alloy casting repair according to claim 6, characterized in that: The limiting plate (201) is an airbag plate, and the elastic fabric (202) is a breathable material.

8. A laser welding machine for alloy casting repair according to claim 7, characterized in that: It also includes a hot air pipe (203); the hot air pipe (203) is fixedly connected to the connecting plate (104), and the hot air pipe (203) is connected to the jet cavity; the surface of the limiting plate (201) is coated with a heat insulation layer, and the elastic cloth (202) is made of a heat insulation material.

9. A laser welding machine for alloy casting repair according to claim 8, characterized in that: It also includes an electric skateboard (301), a hollow tube (302) and a folding cloth (303); the two connecting plates (104) are slidably connected to the electric skateboard (301); the electric skateboard (301) is fixedly connected to the hollow tube (302), and the hollow tube (302) passes through the electric skateboard (301); the electric skateboard (301) is fixedly connected to the folding cloth (303), and the folding cloth (303) is fixedly connected to the rectangular plate (107).

10. A laser welding machine for alloy casting repair according to claim 9, characterized in that: It also includes a brush rod (305); the rotating plate (108) is fixedly connected to the brush rod (305), and the brush rod (305) is in contact with the metal mesh (105).

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