Metal additive manufacturing device

Abstract

The invention relates to the technical field of electric arc welding, in particular to a metal additive manufacturing device which comprises a first plate and an electric arc generator, the electric arc generator is connected with the first plate and used for generating a welding electric arc to melt continuously-conveyed wires, and the metal additive manufacturing device further comprises a straightening mechanism installed on the first plate; the cooling mechanism is installed below the plate and located on the two sides of the arc generator, and the formed metal part is rapidly cooled through liquid in the cooling mechanism; the grinding mechanism is arranged on the cooling mechanism and used for grinding the surface of the formed metal part; the straightening mechanism comprises a mounting assembly, a circulating assembly, a cooling assembly, a transmission assembly, a second pipe, a gear, a first extrusion cylinder and a second extrusion cylinder. The high-temperature extrusion cylinder I and the high-temperature extrusion cylinder II are used for carrying out roll forming on the wire, wire bending is eliminated, and internal stress of the wire is released, so that welding arcs generated by the arc generator can melt the wire more easily, the energy consumption of the arc generator can be reduced, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of arc welding, and in particular to a metal additive manufacturing device. Background Art

[0002] The wire feeding equipment transports the wire to the designated position above the electric turntable that supports the metal parts. The arc generator on the driving end of the robotic arm then generates a welding arc to melt the wire that is continuously transported to the designated position. The molten wire is stacked layer by layer on the electric turntable to form hollow cylindrical and rectangular metal parts, completing the arc additive manufacturing of metal parts. Depending on production needs, the wire can be made of metal materials such as copper and titanium.

[0003] Chinese invention patent publication number CN118699528A discloses an infrared temperature measurement device for arc additive manufacturing processes. The device comprises a welding torch body, a barrel, and a tungsten electrode. The barrel is located at the bottom of the welding torch body, and the tungsten electrode is located at the bottom of the barrel. This prior art utilizes an infrared temperature measurement device for arc additive manufacturing processes to monitor the temperature on both sides of the additive manufacturing process. This data can be compared to more clearly reflect the temperature of the additive manufacturing process, improving the device's practicality and monitoring capabilities.

[0004] However, most of the wires used for additive manufacturing are stored in rolls in storage tubes. This causes the wire to bend during the pulling process. The bent wire may deviate from the center of the molten pool, affecting the forming accuracy. This will not only cause defects in the processed metal workpiece, but may also affect the normal use of the arc generator. Summary of the Invention

[0005] The purpose of the present invention is to propose a metal additive manufacturing device to address the problems existing in the background technology.

[0006] The technical solution of the present invention is a metal additive manufacturing device, comprising a plate 1 and an arc generator, wherein the arc generator is connected to the plate 1 to generate a welding arc to melt a continuously conveyed wire, and further comprising:

[0007] a straightening mechanism mounted on plate one;

[0008] The cooling mechanism is installed under the plate and on both sides of the arc generator, which quickly cools the metal parts being formed through the liquid inside;

[0009] A grinding mechanism, which is provided on the cooling mechanism and is used to grind the surface of the formed metal part;

[0010] The straightening mechanism includes a mounting assembly, a circulation assembly, a cooling assembly, a transmission assembly, tube 2, gears, extrusion barrel 1 and extrusion barrel 2; the mounting assembly is mounted on plate 1; tube 2 is mounted on the liquid outlet end of the cooling mechanism; there are two groups of extrusion barrel 1 and extrusion barrel 2, both groups of extrusion barrel 1 and extrusion barrel 2 are mounted in the mounting assembly, circulation assemblies for circulating the liquid are mounted on the extrusion barrel 1 and extrusion barrel 2, and transmission assemblies are mounted on the two groups of extrusion barrel 1 and extrusion barrel 2; the high-temperature liquid is discharged from the cooling mechanism into the circulation assembly along tube 2, and then flows into the cooling assembly mounted on plate 1 after passing through extrusion barrel 1 and extrusion barrel 2.

[0011] Preferably, the mounting assembly comprises a first housing, a second drive device and a second housing;

[0012] Shell one is installed on plate one, on which driving device two is installed. One extrusion cylinder one is connected to the output shaft of driving device two, and shell two is installed at the bottom end of shell one. The wire enters from the top of shell one and is discharged from shell two.

[0013] Preferably, the circulation assembly includes a circular plate, a first tube, a third tube, and a first infusion device;

[0014] Multiple circular plates are rotatably connected to extrusion cylinder one and extrusion cylinder two; the two horizontal sections of tube one are connected to the circular plates, and the horizontal section below it passes through the circular plates and is located on the side of the inner cavity of extrusion cylinder two away from the circular plates; tube three is installed on the circular plate, and its output end and input end are respectively located in the cooling component and on the side of the inner cavity of extrusion cylinder one away from the circular plate; infusion device one is installed on tube three.

[0015] Preferably, the transmission assembly includes gears, synchronous wheels and synchronous belts;

[0016] Multiple gears are installed on the extrusion cylinder one and the extrusion cylinder two, the gears on the two extrusion cylinders one are meshed, and the gears on the two extrusion cylinders two are meshed; a synchronous wheel is installed on one set of the extrusion cylinder one and the extrusion cylinder two, and the surface of the synchronous wheel is sleeved with a synchronous belt.

[0017] Preferably, the cooling assembly includes a cooling box, a cooler, a telescopic hose and an infusion device;

[0018] The cooling box is installed on the first plate, and the output end of the circulation component is located at the top of the inner cavity of the cooling box; the cooling box is installed with a cooler; the cooling box is installed with a telescopic hose, the other end of the telescopic hose is connected to the cooling mechanism, and the infusion device 2 is installed on the telescopic hose.

[0019] Preferably, the cooling mechanism includes a movable unit, a limiting unit, a first cylinder, a first driving device, a T-shaped rod, a cooling cylinder and a second cylinder;

[0020] A movable unit is installed under plate one, and the movable unit is connected to the limit unit; cylinder one is installed on the movable unit, and is connected to the liquid outlet end of the cooling component; driving device one is installed on cylinder one, and its output shaft is connected to a T-shaped rod, and the T-shaped rod is installed with the cooling cylinder, cylinder two is rotatably connected to the bottom end of the cooling cylinder, and the top end of the cooling cylinder is rotatably connected to cylinder one.

[0021] Preferably, the movable unit includes an elastic member 1, an L-plate, an elastic member 2, a bottom frame and a top frame;

[0022] The elastic member 1 is installed at the bottom end of the plate 1, and the other end thereof is connected to the L plate, the L plate is connected to the elastic member 2, the other end of the elastic member 2 is connected to the bottom frame, and the top frame is installed on the bottom frame.

[0023] Preferably, the limiting unit includes a rod 1 and a guide frame;

[0024] Rod one is installed on the top frame, the guide frame is installed on the bottom end of plate one, rod one is slidably connected in the guide frame, and the bottom end of the guide frame is an inclined surface.

[0025] Preferably, the grinding mechanism includes a second plate, a grinding wheel, a third elastic member, a first ramp block, a first spring, a second ramp block, a second rod, and a guide plate;

[0026] Plate two is installed on the T-shaped rod, the grinding wheel is rotatably connected to the bottom frame, the elastic member three is installed at the center of the grinding wheel, and the other end of the elastic member three is connected to the inclined plane block one; the spring one is installed on the bottom frame; one end of the rod two is installed with the inclined plane block two, and the other end passes through the bottom frame and is installed with a rotating wheel; the guide plate is installed at the bottom end of the plate one, and the rod two moves on the guide plate through the rotating wheel; a slot is opened in the middle of the inclined plane block one, and when the inclined plane block two leaves, the inclined plane block one rises due to the elasticity of the elastic member three, so that the plate two is inserted into the slot in the middle of the inclined plane block one.

[0027] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0028] The arc generator and plate 1 are connected to the driving end of the robotic arm, which can drive the arc generator and plate 1 to move. Then, one end of the rolled wire made of copper or titanium enters the shell 1 and passes between the extrusion cylinders 1 and 2. At the initial stage of processing, the bottom end of the bottom frame contacts the electric turntable.

[0029] Then, the driving device 2 is started to drive the extrusion barrel 1 to rotate, and through the transmission of gears, synchronous wheels and synchronous belts, the two sets of extrusion barrels 1 and 2 are driven to rotate, and the wire is continuously transported to the bottom of the arc generator. The arc generator generates a welding arc to heat the wire to form a copper metal body or a titanium metal body. At this time, the cooling barrel is in contact with the metal body, while the grinding wheel is not in contact with the metal body.

[0030] As the metal body is formed, plate one gradually rises, and at this time the elasticity of elastic part one drives the L plate to descend, and as the L plate descends, rod one drives it down along the guide frame. When rod one descends to the bottom, rod one leaves the inner cavity of the guide frame, releasing the elasticity of elastic part two and rod two separates from the guide plate. At this time, inclined plane block two leaves the top of inclined plane block one through the elasticity of spring one, and then drives inclined plane block one to rise and engage with plate two through the elasticity of elastic part three, so that the grinding wheel is driven to rotate when the T-shaped rod rotates, and at the same time, the grinding wheel is driven to fit the outer surface of the metal part through the elasticity of elastic part two, and the surface of the formed metal part is polished by the rotation of the grinding wheel, thereby achieving the goal of not polishing the metal part when the molding is not stable enough in the early stage of additive manufacturing, and polishing its surface through the grinding wheel after the molding of the metal part is stable.

[0031] During the additive process, the infusion device 1 is started to transport the liquid in the inner cavity of the cooling box to the inner cavity of the cooling cylinder along the tube 3. Then, the arc generator heating wire is quickly cooled through the bonding between the cooling cylinder and the metal body, thereby avoiding the high heat generated by the arc generator causing the metal part to be heated for a long time and the slow cooling process, causing the fine particles inside the metal part to expand rapidly, resulting in a decrease in mechanical properties and affecting the quality of the metal part.

[0032] Subsequently, the temperature of the liquid rises and it enters the inner cavity of extrusion barrel 2 along tube 2, then enters the inner cavity of extrusion barrel 1 through tube 1, and then returns to the inner cavity of the cooling box through tube 3, and is cooled by the cooler. The wire is roll-formed by the high-temperature extrusion barrel 1 and extrusion barrel 2 to eliminate the bending of the wire and release its internal stress, thereby making it easier for the welding arc generated by the arc generator to melt the wire, and reducing the energy consumption of the arc generator, saving energy and being environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 This is a schematic structural diagram of the shell 1 and plate 1 proposed in the present invention;

[0035] Figure 3 This is a schematic diagram of the connection between the cooling cylinder and the second cylinder proposed in the present invention;

[0036] Figure 4 The present invention proposes Figure 3 A in the middle is an enlarged schematic diagram;

[0037] Figure 5 This is a schematic structural diagram of the driving device 1 and the T-shaped rod proposed in the present invention;

[0038] Figure 6 The present invention proposes Figure 5 The enlarged schematic diagram of point B in the middle;

[0039] Figure 7 This is a schematic diagram of the interior of a shell proposed by the present invention;

[0040] Figure 8 The present invention provides a schematic structural diagram of the extrusion cylinder 1 and the extrusion cylinder 2;

[0041] Figure 9 Schematic diagram of the wire material proposed in the present invention.

[0042] Reference numerals: 1, plate 1; 2, elastic member 1; 3, L-plate; 4, elastic member 2; 5, bottom frame; 6, top frame; 7, cylinder 1; 8, driving device 1; 9, T-shaped rod; 10, cooling cylinder; 11, cylinder 2; 12, rod 1; 13, guide frame; 14, shell 1; 15, driving device 2; 16, extrusion cylinder 1; 17, gear; 18, circular plate; 19, tube 1; 20, extrusion cylinder 2; 2 1. Tube 2; 22. Tube 3; 23. Infusion device 1; 24. Synchronous pulley; 25. Synchronous belt; 26. Shell 2; 27. Arc generator; 28. Cooling box; 29. ​​Cooler; 30. Telescopic hose; 31. Infusion device 2; 32. Plate 2; 33. Grinding wheel; 34. Elastic part 3; 35. Inclined block 1; 36. Spring 1; 37. Inclined block 2; 38. Rod 2; 39. Guide plate. DETAILED DESCRIPTION

[0043] Example 1, as Figures 1-9 As shown, the present invention proposes a metal additive manufacturing device, including a straightening mechanism, a cooling mechanism, a grinding mechanism, a plate 1, and an arc generator 27. The arc generator 27 is installed in the middle of the plate 1 and is used to generate a welding arc to melt the continuously fed wire. The device also includes:

[0044] The straightening mechanism is installed on plate 1;

[0045] The cooling mechanism is installed under the plate 1 and on both sides of the arc generator 27, and quickly cools the metal parts being formed through the internal liquid;

[0046] The grinding mechanism is provided on the cooling mechanism and is used to grind the surface of the formed metal parts;

[0047] The straightening mechanism includes a mounting assembly, a circulation assembly, a cooling assembly, a transmission assembly, a pipe 21, a gear 17, an extrusion cylinder 16 and an extrusion cylinder 20; the mounting assembly is mounted on the plate 1; the pipe 21 is mounted on the liquid outlet end of the cooling mechanism; there are two groups of extrusion cylinders 16 and extrusion cylinders 20, and both groups of extrusion cylinders 16 and extrusion cylinders 20 are mounted in the mounting assembly, and a circulation assembly for circulating the liquid is mounted on the extrusion cylinders 16 and extrusion cylinders 20, and the transmission assembly is mounted on both groups of extrusion cylinders 16 and extrusion cylinders 20; the high-temperature liquid is discharged from the cooling mechanism into the circulation assembly along the pipe 21, and then flows into the cooling assembly mounted on the plate 1 after passing through the extrusion cylinders 16 and extrusion cylinders 20.

[0048] An arc generator 27 is mounted on the driving end of a robotic arm, which drives the arc generator 27. The arc generator 27 is located above a motorized turntable that supports the metal workpiece. The robotic arm drives the metal additive manufacturing device. The turntable's bearing surface is made of high-temperature resistant material and can rotate at a set speed as needed. Both the robotic arm and the turntable utilize existing design structures and are not described in detail.

[0049] When the machine is started, the wire is transported to the top of the electric turntable, and then the arc generator 27 generates a welding arc to heat the wire, so that the transported wire is in a molten state and falls on the electric turntable. As the electric turntable rotates and the mechanical arm drives the metal additive manufacturing device to move, the molten wire is stacked and formed in a circular layer. After cooling and solidification, a hollow cylindrical or rectangular metal body is obtained, that is, the required metal additive is obtained.

[0050] The wire can be made of copper or titanium.

[0051] The mounting assembly includes a housing 14, a drive device 2 15, and a housing 26;

[0052] Shell 14 is installed on plate 1, on which drive device 2 15 is installed, one of the extrusion cylinders 16 is connected to the output shaft of drive device 2 15, and shell 2 26 is installed at the bottom end of shell 14; the wire enters from the top of shell 14 and is discharged from shell 2 26.

[0053] The bottom end of the shell 26 faces downward of the arc generator 27 .

[0054] The circulation assembly includes a circular plate 18, a tube 19, a tube 3 22 and an infusion device 1 23;

[0055] Multiple circular plates 18 are rotatably connected to the extrusion cylinder 16 and the extrusion cylinder 2 20; the two horizontal sections of the tube 19 are connected to the circular plates 18, and the horizontal section below it passes through the circular plates 18 and is located on the side of the inner cavity of the extrusion cylinder 20 away from the circular plates 18; the tube 3 22 is installed on the circular plate 18, and its output end and input end are respectively located in the cooling assembly and on the side of the inner cavity of the extrusion cylinder 16 away from the circular plate 18; the infusion device 1 23 is installed on the tube 3 22.

[0056] The high-temperature liquid first enters the inner cavity of the extrusion cylinder 20 through the second tube 21, then enters the inner cavity of the first tube 19, and then enters the inner cavity of the extrusion cylinder 16 along the first tube 19. After entering the inner cavity of the extrusion cylinder 16, it is discharged through the third tube 22, ensuring that the hottest liquid finally contacts the wire, thereby achieving the effect of preheating the wire, thereby reducing the energy consumption of the arc generator 27.

[0057] The liquid transported into the inner cavity of the extrusion barrel 16 can be a nano-enhanced coolant and a liquid metal thermal conductor.

[0058] The transmission assembly includes a gear 17, a synchronous wheel 24 and a synchronous belt 25;

[0059] Multiple gears 17 are installed on the extrusion cylinder 16 and the extrusion cylinder 2 20. The gears 17 on the two extrusion cylinders 16 are meshed, and the gears 17 on the two extrusion cylinders 20 are meshed. The synchronous wheel 24 is installed on one group of the extrusion cylinder 16 and the extrusion cylinder 20, and the surface of the synchronous wheel 24 is connected to the synchronous belt 25.

[0060] Driving device 2 15 drives the extrusion cylinder 16 in one group to rotate, and then drives the extrusion cylinder 16 in the other group to rotate through gear 17, and then the extrusion cylinder 16 in this group drives the synchronous wheel 24 to rotate, and then drives the synchronous belt 25 to operate, and then drives the extrusion cylinder 2 20 in this group to rotate, thereby realizing the rotation of the two groups of extrusion cylinders 16 and extrusion cylinders 2, thereby transporting the wire to the bottom of the arc generator 27.

[0061] The cooling assembly includes a cooling box 28, a cooler 29, a telescopic hose 30 and an infusion device 2 31;

[0062] A cooling box 28 is mounted on plate 1, with the output end of the circulation assembly located at the top of the inner cavity of the cooling box 28; a cooler 29 is mounted on the cooling box 28; a telescopic hose 30 is mounted on the cooling box 28, the other end of the telescopic hose 30 being connected to the cooling mechanism, and an infusion device 2 31 being mounted on the telescopic hose 30.

[0063] The output end of tube three 22 is located at the top of the inner cavity of the cooling box 28. The high-temperature liquid is output from tube three 22 to the top of the inner cavity of the cooling box 28, and the cooled liquid at the bottom of the inner cavity of the cooling box 28 is output from the telescopic hose 30.

[0064] Example 2, as Figure 1-Figure 5 As shown, the metal additive manufacturing device proposed by the present invention, compared with the embodiment 1, the cooling mechanism of this embodiment includes a movable unit, a limiting unit, a cylinder 1 7, a driving device 1 8, a T-shaped rod 9, a cooling cylinder 10 and a cylinder 2 11;

[0065] A movable unit is installed under plate 1, and the movable unit is connected to the limit unit; cylinder 1-7 is installed on the movable unit, and is connected to the liquid outlet end of the cooling component; driving device 1-8 is installed on cylinder 1-7, and its output shaft is connected to T-shaped rod 9, T-shaped rod 9 is installed with cooling cylinder 10, cylinder 2 11 is rotatably connected to the bottom end of cooling cylinder 10, and the top end of cooling cylinder 10 is rotatably connected to cylinder 1-7.

[0066] The driving device 18 drives the T-shaped rod 9 to rotate, and the T-shaped rod 9 drives the cooling cylinder 10 to rotate. When the cooling cylinder 10 rotates, the cylinder 1 7 and the cylinder 2 11 are fixed, and the cooling cylinder 10 contacts the vicinity of the melting point of the wire, and then absorbs the heat of the melting point through the cooling of the cooling cylinder 10.

[0067] A protective shell is installed on the cylinder 7, and the driving device 8 is located in the protective shell.

[0068] The movable unit includes an elastic member 1 2, an L-plate 3, an elastic member 2 4, a bottom frame 5 and a top frame 6;

[0069] Elastic member 1 2 is installed at the bottom end of plate 1 , and its other end is connected to L plate 3 , which is connected to elastic member 2 4 , and the other end of elastic member 2 4 is connected to bottom frame 5 , on which top frame 6 is installed.

[0070] A moving wheel is installed at the bottom end of the L-plate 3. When the metal body is formed to be shorter, the moving wheel at the bottom end of the L-plate 3 contacts the top end of the electric turntable.

[0071] The limiting unit includes a rod 12 and a guide frame 13;

[0072] Rod 12 is installed on the top frame 6, and the guide frame 13 is installed at the bottom end of plate 1. Rod 12 is slidably connected in the guide frame 13, and the bottom end of the guide frame 13 is an inclined surface.

[0073] Example 3, as Figure 1-Figure 3 、 Figure 5 and Figure 6 As shown, the metal additive manufacturing device proposed by the present invention, compared with the second embodiment, the grinding mechanism of this embodiment includes a second plate 32, a grinding wheel 33, a third elastic member 34, a first inclined block 35, a first spring 36, a second inclined block 37, a second rod 38 and a guide plate 39;

[0074] Plate 2 32 is mounted on the T-shaped rod 9, the grinding wheel 33 is rotatably connected to the bottom frame 5, the elastic member 3 34 is mounted at the center of the grinding wheel 33, and the other end of the elastic member 34 is connected to the inclined block 1 35; the spring 1 36 is mounted on the bottom frame 5; one end of the rod 2 38 is mounted on the inclined block 2 37, and the other end passes through the bottom frame 5 and is mounted with a rotating wheel; the guide plate 39 is mounted on the bottom end of the plate 1, and the rod 2 38 runs on the guide plate 39 through the rotating wheel; a slot is provided in the middle of the inclined block 1 35, and when the inclined block 2 37 leaves, the inclined block 1 35 rises due to the elasticity of the elastic member 34, so that the plate 2 32 is inserted into the slot in the middle of the inclined block 1 35.

[0075] One end of the grinding wheel 33 facing the arc generator 27 is flat, so as to avoid the grinding wheel 33 from contacting and squeezing the unstable metal when the height of the metal body being processed is not high.

[0076] The cooling cylinder 10 is made of heat-conducting material, and the liquid flow rate in the inner cavity of the cooling cylinder 10 is relatively fast, thereby preventing the cooling cylinder 10 from being damaged by high temperature.

[0077] The driving device 1 8 and the driving device 2 15 are both servo motors, and the infusion device 1 23 and the infusion device 2 31 are both water pumps.

[0078] In summary, in the present invention, the arc generator 27 and plate 1 are installed on the driving end of the robotic arm, and the driving end of the robotic arm can drive the arc generator 27 to move along a predetermined path above the electric turntable. At this time, the arc generator 27 is facing the top of the electric turntable, and then one end of the wire in the wire feeding mechanism is fed into the shell 14 between the extrusion cylinder 16 and the extrusion cylinder 2 20. Then, the driving device 2 15 is started to drive the extrusion cylinder 16 to rotate, and the extrusion cylinder 16 and the extrusion cylinder 2 20 are driven to rotate through the transmission of the gear 17, the synchronous wheel 24 and the synchronous belt 25, and the wire is transported to the bottom of the arc generator 27, and a welding arc is generated by the arc generator 27 to melt the wire.

[0079] When the height of the metal body is low, the moving wheel at the bottom end of the bottom frame 5 contacts the electric turntable. At this time, the L plate 3 is squeezed, causing the elastic member 2 to contract and accumulate elastic potential energy. As the height of the metal body gradually increases, the metal bottom is stable. At the same time, the driving end of the robotic arm drives the arc generator 27 and the plate 1 to gradually rise, causing the elastic member 2 to also rise. At this time, the elastic member 2 releases its elastic potential energy. As the plate 1 rises, it gradually stretches to its natural state, and at the same time drives the L plate 3 at the bottom end of the elastic member 2 to fall. The descent of the L plate 3 drives the bottom frame 5 to fall, and the bottom frame 5 drives the top Frame 6 descends, and top frame 6 drives rod 12 to descend along guide frame 13. At this time, since the distance between plate 1 and L plate 3 gradually increases, bottom frame 5 will drive rod 2 38 to descend along guide plate 39. As rod 2 38 moves, rod 2 38 separates from the vertical section of guide plate 39. Then spring 1 36 releases elastic potential energy, driving inclined plane block 2 37 to move in the direction of rod 2 38, thereby making inclined plane block 2 37 leave the top of inclined plane block 1 35, and then driving inclined plane block 1 35 to rise through elastic member 3 34, thereby making plate 2 32 and inclined plane block 1 35 engage.

[0080] Then, the driving device 8 is started to drive the T-shaped rod 9 to rotate. The rotation of the T-shaped rod 9 drives the plate 2 32 and the inclined block 1 35 at its bottom to rotate, and then drives the grinding wheel 33 to rotate. The grinding wheel 33 grinds the surface of the formed metal body to make its surface smooth.

[0081] When rod 12 separates from the inner cavity of guide frame 13, the limit of rod 12 is released, and then elastic member 2 4 releases elastic potential energy, thereby driving cooling cylinder 10 and grinding wheel 33 to press the metal body forcefully, so that the cooling cylinder 10 and grinding wheel 33 are in close contact with the metal body.

[0082] At the same time, the infusion device 2 31 is started to transport the cooling liquid in the inner cavity of the cooling box 28 to the inner cavity of the cooling cylinder 10 through the telescopic hose 30 and the cylinder 1 7. Then, the cooling cylinder 10 contacts the melting point of the wire material to quickly cool the melting point. The liquid in the inner cavity of the cooling cylinder 10 absorbs heat and becomes a high-temperature liquid.

[0083] Then, these high-temperature liquids enter the inner cavity of extrusion cylinder 20 along tube 21, and then enter the inner cavity of extrusion cylinder 16 along tube 19, heating extrusion cylinder 16 and extrusion cylinder 20. Then, the wire is rolled by the heated extrusion cylinder 20 and extrusion cylinder 16, making it easier for the wire to plastically eliminate bending, release internal stress, and inhibit subsequent rebound.

[0084] Then, the liquid in the inner cavity of the extrusion cylinder 16 is transported along the tube 3 22 to the top of the inner cavity of the cooling box 28 through the infusion device 23, and then the liquid in the inner cavity of the cooling box 28 is cooled by the cooler 29, thus completing the cycle.

[0085] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A metal additive manufacturing device, comprising a plate (1) and an arc generator (27), wherein the arc generator (27) is connected to the plate (1) and is used to generate a welding arc to melt a continuously fed wire, characterized in that: Also includes: a straightening mechanism mounted on plate one (1); A cooling mechanism, which is installed under the plate (1) and located on both sides of the arc generator (27), quickly cools the metal parts being formed through the liquid inside; A grinding mechanism, which is provided on the cooling mechanism and is used to grind the surface of the formed metal part; The straightening mechanism comprises a mounting assembly, a circulation assembly, a cooling assembly, a transmission assembly, a pipe 2 (21), a gear (17), an extrusion barrel 1 (16) and an extrusion barrel 2 (20); the mounting assembly is mounted on the plate 1 (1); the pipe 2 (21) is mounted at the liquid outlet end of the cooling mechanism; the extrusion barrel 1 (16) and the extrusion barrel 2 (20) are provided in two groups, and the two groups of extrusion barrels 1 (16) and the extrusion barrel 2 (20) are both mounted in the mounting assembly, and the extrusion barrel 1 (16) and the extrusion barrel 2 (20) are mounted with a circulation assembly for circulating the liquid, and the transmission assembly is mounted on the two groups of extrusion barrels 1 (16) and the extrusion barrel 2 (20); the arc generator (27) heats the wire material to form it into a metal body, and then the liquid inside the cooling mechanism cools the metal, and then the high-temperature liquid inside the cooling mechanism is discharged into the circulation assembly along the pipe 2 (21), and then flows into the cooling assembly mounted on the plate 1 (1) after passing through the extrusion barrel 1 (16) and the extrusion barrel 2 (20).

2. The metal additive manufacturing device according to claim 1, characterized in that: The mounting assembly includes a housing 1 (14), a drive device 2 (15) and a housing 2 (26); Shell 1 (14) is installed on plate 1 (1), on which driving device 2 (15) is installed, one of the extrusion cylinders 1 (16) is connected to the output shaft of driving device 2 (15), and shell 2 (26) is installed at the bottom end of shell 1 (14); the wire enters from the top of shell 1 (14) and is discharged from shell 2 (26).

3. The metal additive manufacturing device according to claim 1, characterized in that: The circulation assembly includes a circular plate (18), a tube one (19), a tube three (22) and an infusion device one (23); A plurality of circular plates (18) are rotatably connected to the extrusion cylinder 1 (16) and the extrusion cylinder 2 (20); the two horizontal sections of the tube 1 (19) are both connected to the circular plates (18), and the horizontal section below the tube 1 passes through the circular plates (18) and is located on the side of the inner cavity of the extrusion cylinder 2 (20) away from the circular plates (18); the tube 3 (22) is installed on the circular plates (18), and the output end and the input end thereof are respectively located in the cooling assembly and on the side of the inner cavity of the extrusion cylinder 1 (16) away from the circular plates (18); and the infusion device 1 (23) is installed on the tube 3 (22).

4. The metal additive manufacturing device according to claim 3, characterized in that: The transmission assembly includes a gear (17), a synchronous wheel (24) and a synchronous belt (25); A plurality of gears (17) are mounted on the first extrusion cylinder (16) and the second extrusion cylinder (20), the gears (17) on the two first extrusion cylinders (16) are meshed, and the gears (17) on the two second extrusion cylinders (20) are meshed; a synchronous wheel (24) is mounted on one set of the first extrusion cylinder (16) and the second extrusion cylinder (20), and a synchronous belt (25) is sleeved on the surface of the synchronous wheel (24).

5. The metal additive manufacturing device according to claim 1, characterized in that: The cooling assembly includes a cooling box (28), a cooler (29), a telescopic hose (30) and an infusion device (31); The cooling box (28) is installed on the plate (1), and the output end of the circulation component is located at the top of the inner cavity of the cooling box (28); the cooling box (28) is installed with a cooler (29); the cooling box (28) is installed with a telescopic hose (30), the other end of the telescopic hose (30) is connected to the cooling mechanism, and the infusion device 2 (31) is installed on the telescopic hose (30).

6. The metal additive manufacturing device according to claim 1, characterized in that: The cooling mechanism includes a movable unit, a limiting unit, a cylinder 1 (7), a driving device 1 (8), a T-shaped rod (9), a cooling cylinder (10) and a cylinder 2 (11); A movable unit is installed below plate one (1), and the movable unit is connected to the limit unit; cylinder one (7) is installed on the movable unit, and is connected to the liquid outlet end of the cooling component; driving device one (8) is installed on cylinder one (7), and its output shaft is connected to a T-shaped rod (9), and the T-shaped rod (9) is installed on the cooling cylinder (10); cylinder two (11) is rotatably connected to the bottom end of the cooling cylinder (10), and the top end of the cooling cylinder (10) is rotatably connected to cylinder one (7).

7. The metal additive manufacturing device according to claim 6, characterized in that: The movable unit comprises an elastic member 1 (2), an L-plate (3), an elastic member 2 (4), a bottom frame (5) and a top frame (6); The elastic member 1 (2) is installed at the bottom end of the plate 1 (1), and the other end thereof is connected to the L plate (3). The L plate (3) is connected to the elastic member 2 (4). The other end of the elastic member 2 (4) is connected to the bottom frame (5), and the top frame (6) is installed on the bottom frame (5).

8. The metal additive manufacturing device according to claim 7, characterized in that: The limiting unit includes a rod (12) and a guide frame (13); Rod one (12) is installed on the top frame (6), and the guide frame (13) is installed on the bottom end of plate one (1). Rod one (12) is slidably connected in the guide frame (13), and the bottom end of the guide frame (13) is an inclined surface.

9. The metal additive manufacturing device according to claim 7, characterized in that: The grinding mechanism includes a second plate (32), a grinding wheel (33), a third elastic member (34), a first bevel block (35), a first spring (36), a second bevel block (37), a second rod (38) and a guide plate (39); The second plate (32) is mounted on the T-shaped rod (9), the grinding wheel (33) is rotatably connected to the bottom frame (5), the third elastic member (34) is mounted at the center of the grinding wheel (33), and the other end of the third elastic member (34) is connected to the first bevel block (35); the first spring (36) is mounted on the bottom frame (5); one end of the second rod (38) is mounted on the second bevel block (37), and the other end passes through the bottom frame (5) and is mounted with a rotating wheel; the guide plate (39) is mounted on the bottom end of the first plate (1), and the second rod (38) travels on the guide plate (39) through the rotating wheel; a slot is provided in the middle of the first bevel block (35), and when the second bevel block (37) leaves, the first bevel block (35) rises due to the elasticity of the third elastic member (34), so that the second plate (32) is inserted into the slot in the middle of the first bevel block (35).

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