A metal additive manufacturing apparatus

Abstract

This invention relates to the field of arc welding technology, specifically to a metal additive manufacturing apparatus, comprising a plate and an arc generator. The arc generator is connected to the plate and used to generate a welding arc to melt a continuously fed wire. The apparatus also includes: a straightening mechanism mounted on the plate; a cooling mechanism mounted below the plate and located on both sides of the arc generator, which rapidly cools the metal part being formed using internal liquid; and a grinding mechanism located on the cooling mechanism for grinding the surface of the formed metal part. The straightening mechanism includes an installation assembly, a circulation assembly, a cooling assembly, a transmission assembly, a second tube, gears, a first extrusion cylinder, and a second extrusion cylinder. This invention uses the high-temperature first and second extrusion cylinders to roll-form the wire, eliminating wire bending and releasing internal stress, thereby facilitating easier melting of the wire by the welding arc generated by the arc generator, and reducing the energy consumption of the arc generator, thus saving energy and being environmentally friendly.

Description

Technical Field

[0001] This invention relates to the field of arc welding technology, and more specifically to a metal additive manufacturing apparatus. Background Technology

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

[0003] Chinese invention patent CN118699528A discloses an infrared temperature measuring device for an arc additive manufacturing process, comprising: a welding torch body, a cylinder, and a tungsten electrode. The cylinder is located at the bottom end of the welding torch body, and the tungsten electrode is located at the bottom end of the cylinder. This prior art, through its infrared temperature measuring device for the arc additive manufacturing process, can monitor the temperature on both sides of the additively formed area. Data comparison allows for a clearer reflection of the temperature at the additively formed area, improving the device's practicality and monitoring capabilities.

[0004] However, the filaments used in additive manufacturing are mostly stored in rolls in storage cylinders. This results in the filaments being bent during the drawing process. The bent filaments may deviate from the center of the molten pool, affecting the forming accuracy. This can lead to defects in the processed metal workpieces and may also affect the normal use of the arc generator. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a metal additive manufacturing apparatus.

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

[0007] The straightening mechanism is mounted on plate one;

[0008] The cooling mechanism, installed below the plate and located on both sides of the arc generator, rapidly cools the metal parts being formed by using internal liquid.

[0009] A grinding mechanism, which is mounted on a cooling mechanism, is used to grind the surface of shaped metal parts;

[0010] The straightening mechanism includes an installation assembly, a circulation assembly, a cooling assembly, a transmission assembly, a second tube, gears, a first extrusion cylinder, and a second extrusion cylinder. The installation assembly is mounted on a first plate. The second tube is mounted on the liquid outlet of the cooling mechanism. There are two sets of first and second extrusion cylinders, both of which are installed inside the installation assembly. A circulation assembly that circulates the liquid is installed on first and second extrusion cylinders. The transmission assembly is installed on both sets of first and second extrusion cylinders. High-temperature liquid flows from the cooling mechanism into the circulation assembly along the second tube, and then flows through first and second extrusion cylinders before flowing into the cooling assembly mounted on the first plate.

[0011] Preferably, the mounting components include housing one, drive device two, and housing two;

[0012] Shell 1 is mounted on plate 1, and drive device 2 is mounted on it. One of the extrusion cylinders 1 is connected to the output shaft of drive device 2. Shell 2 is mounted at the bottom of shell 1. The wire enters from the top of shell 1 and exits from shell 2.

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

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

[0015] Preferably, the transmission assembly includes gears, timing pulleys, and timing belts;

[0016] Multiple gears are installed on extrusion cylinder one and extrusion cylinder two. The gears on the two extrusion cylinders one mesh, and the gears on the two extrusion cylinders two mesh. A timing pulley is installed on one of the extrusion cylinders one and extrusion cylinder two, and a timing belt is sleeved on the surface of the timing pulley.

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

[0018] The cooling box is installed on plate one, 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 equipped with a cooler; the cooling box is equipped with a telescopic hose, the other end of which is connected to the cooling mechanism, and the infusion device two is installed on the telescopic hose.

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

[0020] A movable unit is installed below the plate, and the movable unit is connected to the limiting unit; a cylinder is installed on the movable unit, and it is connected to the liquid outlet end of the cooling component; a drive device is installed on the cylinder, and its output shaft is connected to a T-shaped rod. The T-shaped rod is installed on the cooling cylinder, and a cylinder is rotatably connected to the bottom end of the cooling cylinder. The top end of the cooling cylinder is rotatably connected to the cylinder.

[0021] Preferably, the movable unit includes elastic element one, L-plate, elastic element two, bottom frame and top frame;

[0022] Elastic component one is installed at the bottom end of plate one, and its other end is connected to plate L. Elastic component two is connected to plate L, and the other end of elastic component two is connected to the bottom frame. The top frame is installed on the bottom frame.

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

[0024] Rod 1 is installed on the top frame, and guide frame is installed at the bottom of plate 1. Rod 1 is slidably connected inside guide frame, and the bottom of guide frame is inclined.

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

[0026] Plate 2 is mounted on the T-shaped rod, and the grinding wheel is rotatably connected inside the base frame. Elastic element 3 is mounted at the center of the grinding wheel, and the other end of elastic element 3 is connected to inclined block 1. Spring 1 is mounted on the base frame. One end of rod 2 is mounted with inclined block 2, and the other end passes through the base frame and is mounted with a rotating wheel. Guide plate is mounted at the bottom of plate 1, and rod 2 travels on the guide plate through the rotating wheel. A slot is opened in the middle of inclined block 1. When inclined block 2 leaves, inclined block 1 rises due to the elasticity of elastic element 3, so that plate 2 is inserted into the slot in the middle of inclined block 1.

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

[0028] The arc generator and plate one are connected to the drive end of the robotic arm. The drive end of the robotic arm can move the arc generator and plate one. Then, one end of the coiled wire made of copper or titanium enters the shell one and passes between the extrusion cylinder one and the extrusion cylinder two. In the initial stage of processing, the bottom end of the bottom frame contacts the electric turntable.

[0029] Then, the second drive device is started to drive the first extrusion cylinder to rotate. Through the transmission of gears, synchronous pulleys and synchronous belts, the two sets of extrusion cylinders one and two rotate, continuously conveying the wire to the bottom of the arc generator. The arc generator generates a welding arc to heat the wire, so that the copper or titanium metal body is formed. At this time, the cooling cylinder 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. At this time, the elasticity of elastic element one drives plate L to descend. As plate L descends, rod one descends along the guide frame. When rod one reaches the bottom, it leaves the inner cavity of the guide frame, releasing the elasticity of elastic element two and separating rod two from the guide plate. At this time, inclined block two leaves above inclined block one through the elasticity of spring one. Then, the elasticity of elastic element three drives inclined block one to rise and engage with plate two. This causes the T-shaped rod to rotate, driving the grinding wheel to rotate. At the same time, the elasticity of elastic element two drives the grinding wheel to fit against the outer surface of the metal part. The rotation of the grinding wheel grinds the surface of the formed metal part. This achieves the goal of not grinding the metal part when the metal part is not stable in the early stage of additive manufacturing, but grinding the surface of the metal part after the metal part is stable.

[0031] During the additive manufacturing process, the liquid infusion device is activated to transport the liquid in the cooling tank cavity to the cooling cylinder cavity along pipe three. Then, through the contact between the cooling cylinder and the metal body, the heating wire of the arc generator is rapidly cooled. This avoids the situation where the large amount of heat generated by the arc generator causes the metal parts to be heated for a long time, and the cooling process is slow, which would cause the fine particles inside the metal parts to expand rapidly, resulting in a decrease in mechanical properties and affecting the quality of the metal parts.

[0032] Subsequently, the temperature of the liquid rises and enters the inner cavity of the extrusion cylinder 2 through pipe 2, then enters the inner cavity of the extrusion cylinder 1 through pipe 1, and then returns to the inner cavity of the cooling box through pipe 3, where it is cooled by the cooler. The wire is rolled and shaped by the high-temperature extrusion cylinders 1 and 2, eliminating the bending of the wire and releasing its internal stress. This makes it easier for the welding arc generated by the arc generator to melt the wire, and can also reduce the energy consumption of the arc generator, making it energy-saving and environmentally friendly. Attached Figure Description

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

[0034] Figure 2 This is a schematic diagram of the structure of shell one and plate one proposed in this invention;

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

[0036] Figure 4 The present invention proposes Figure 3 Enlarged view of point A in the middle;

[0037] Figure 5 This is a schematic diagram of the drive device and the T-shaped rod proposed in this invention;

[0038] Figure 6 The present invention proposes Figure 5 Enlarged view of point B in the middle;

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

[0040] Figure 8 This invention provides a schematic diagram of the structure of extrusion cylinder one and extrusion cylinder two;

[0041] Figure 9 This is a schematic diagram of the wire material proposed in this invention.

[0042] Reference numerals: 1. Plate 1; 2. Elastic element 1; 3. L-plate; 4. Elastic element 2; 5. Bottom frame; 6. Top frame; 7. Cylinder 1; 8. Drive device 1; 9. T-shaped rod; 10. Cooling cylinder; 11. Cylinder 2; 12. Rod 1; 13. Guide frame; 14. Shell 1; 15. Drive device 2; 16. Extrusion cylinder 1; 17. Gear; 18. Circular plate; 19. Pipe 1; 20. Extrusion cylinder 2; 2 1. Pipe 2; 22. Pipe 3; 23. Infusion Equipment 1; 24. Synchronous Pulley; 25. Synchronous Belt; 26. Shell 2; 27. Arc Generator; 28. Cooling Box; 29. ​​Cooler; 30. Telescopic Hose; 31. Infusion Equipment 2; 32. Plate 2; 33. Grinding Wheel; 34. Elastic Component 3; 35. Inclined Block 1; 36. Spring 1; 37. Inclined Block 2; 38. Rod 2; 39. Guide Plate. Detailed Implementation

[0043] Example 1, as Figures 1-9 As shown, the present invention proposes a metal additive manufacturing apparatus, comprising 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 apparatus also includes:

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

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

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

[0047] The straightening mechanism includes an installation assembly, a circulation assembly, a cooling assembly, a transmission assembly, a second pipe 21, a gear 17, a first extrusion cylinder 16, and a second extrusion cylinder 20. The installation assembly is mounted on a first plate 1. The second pipe 21 is mounted on the liquid outlet end of the cooling mechanism. There are two sets of first extrusion cylinder 16 and second extrusion cylinder 20, both of which are installed inside the installation assembly. A circulation assembly that circulates the liquid is installed on first extrusion cylinder 16 and second extrusion cylinder 20. The transmission assembly is installed on both sets of first extrusion cylinder 16 and second extrusion cylinder 20. High-temperature liquid is discharged from the cooling mechanism along the second pipe 21 into the circulation assembly, and then flows through first extrusion cylinder 16 and second extrusion cylinder 20 into the cooling assembly mounted on the first plate 1.

[0048] An arc generator 27 is mounted on the drive end of a robotic arm, which can drive the arc generator 27 to move. The arc generator 27 is located above an electric turntable that carries the metal workpiece. The robotic arm can drive the metal additive manufacturing device to move; the bearing end face of the electric turntable is made of a high-temperature resistant material and can rotate at a set speed as needed; both the robotic arm and the electric turntable can adopt existing design structures, which will not be described in detail.

[0049] When the machine is started, the wire is conveyed above the electric turntable. Then, the arc generator 27 generates a welding arc to heat the wire, so that the conveyed wire is in a molten state and falls onto the electric turntable. As the electric turntable rotates and the robotic arm moves the metal additive manufacturing device, the molten wire is stacked and formed in a circumferential layer. After cooling and solidification, a hollow cylindrical or rectangular metal body is obtained, which is the desired metal additive.

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

[0051] The mounting components include housing 14, drive device 25, and housing 26;

[0052] Shell 14 is mounted on plate 1, and drive device 25 is mounted on it. One of the extrusion cylinders 16 is connected to the output shaft of drive device 25. Shell 26 is mounted on the bottom of shell 14. The wire enters from the top of shell 14 and exits from shell 26.

[0053] The bottom of shell 26 faces downwards from the arc generator 27.

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

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

[0056] The high-temperature liquid first enters the inner cavity of the extrusion cylinder 20 through pipe 21, then enters the inner cavity of pipe 19, and then enters the inner cavity of extrusion cylinder 16 along pipe 19. After entering the inner cavity of extrusion cylinder 16, it is discharged through pipe 32, ensuring that the hottest liquid comes into contact with the wire last, thereby achieving the effect of preheating the wire and reducing the energy consumption of the arc generator 27.

[0057] The liquid conveyed into the inner cavity of the extrusion cylinder 16 can be a nano-reinforced coolant or a liquid metal thermal conductive agent.

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

[0059] Multiple gears 17 are installed on extrusion cylinder 16 and extrusion cylinder 20. The gears 17 on the two extrusion cylinders 16 mesh, and the gears 17 on the two extrusion cylinders 20 mesh. Synchronous pulley 24 is installed on one of the extrusion cylinders 16 and extrusion cylinder 20, and synchronous belt 25 is sleeved on the surface of synchronous pulley 24.

[0060] The drive device 215 drives the extrusion cylinder 16 in one group to rotate, and then drives the extrusion cylinder 16 in another group to rotate through the gear 17. Then the extrusion cylinder 16 in this group drives the synchronous pulley 24 to rotate, which in turn drives the synchronous belt 25 to rotate, and then drives the extrusion cylinder 20 in this group to rotate. This realizes the rotation of the two extrusion cylinders 16 and 20, thereby conveying the wire to the area below 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] Cooling box 28 is installed on plate 1, and the output end of the circulation component is located at the top of the inner cavity of cooling box 28; cooler 29 is installed in cooling box 28; telescopic hose 30 is installed in cooling box 28, the other end of telescopic hose 30 is connected to cooling mechanism, and infusion device 21 is installed on telescopic hose 30.

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

[0064] Example 2, as Figures 1-5 As shown, the metal additive manufacturing apparatus proposed in this invention, compared with Embodiment 1, has a cooling mechanism that includes a movable unit, a limiting unit, a cylinder 7, a driving device 8, a T-shaped rod 9, a cooling cylinder 10, and a cylinder 11.

[0065] A movable unit is installed below plate 1, and the movable unit is connected to a limiting unit; cylinder 7 is installed on the movable unit and is connected to the liquid outlet end of the cooling component; drive device 8 is installed on cylinder 7, and its output shaft is connected to T-shaped rod 9. Cooling cylinder 10 is installed on T-shaped rod 9, and cylinder 11 is rotatably connected to the bottom end of cooling cylinder 10. The top end of cooling cylinder 10 is rotatably connected to cylinder 7.

[0066] The drive device 8 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 7 and the cylinder 11 remain stationary. The cooling cylinder 10 comes into contact with the vicinity of the molten wire, and the heat at the molten area is absorbed through the cooling of the cooling cylinder 10.

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

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

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

[0070] The bottom of L-plate 3 is equipped with casters. When the metal body is relatively short, the casters at the bottom of L-plate 3 contact the top of the electric turntable.

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

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

[0073] Example 3, as Figures 1-3 , Figure 5 and Figure 6 As shown, the metal additive manufacturing apparatus proposed in this invention, compared with Embodiment 2, has a grinding mechanism including plate 2 32, grinding wheel 33, elastic element 3 34, inclined block 1 35, spring 1 36, inclined block 2 37, rod 2 38 and guide plate 39.

[0074] Plate 2 32 is mounted on T-shaped rod 9. Grinding wheel 33 is rotatably connected inside bottom frame 5. Elastic element 34 is mounted at the center of grinding wheel 33. The other end of elastic element 34 is connected to inclined block 1 35. Spring 1 36 is mounted on bottom frame 5. One end of rod 2 38 is mounted with inclined block 2 37, and the other end passes through bottom frame 5 and is mounted with a rotating wheel. Guide plate 39 is mounted at the bottom end of plate 1. Rod 2 38 travels on guide plate 39 through rotating wheel. A slot is opened in the middle of inclined block 1 35. When inclined block 2 37 leaves, inclined block 1 35 rises through the elasticity of elastic element 3 34, so that plate 2 32 is inserted into the slot in the middle of inclined block 1 35.

[0075] The end of the grinding wheel 33 facing the arc generator 27 is flat, which avoids contact and compression between the grinding wheel 33 and the unstable metal when the height of the metal being processed is not high.

[0076] The cooling cylinder 10 is made of thermally conductive material, and the liquid flow rate inside the cooling cylinder 10 is relatively fast, thereby avoiding damage to the cooling cylinder 10 due to high temperature.

[0077] Both drive device 1 (8) and drive device 2 (15) are servo motors, and both infusion device 1 (23) and infusion device 2 (31) are water pumps.

[0078] In summary, in this invention, the arc generator 27 and plate 1 are mounted on the drive end of the robotic arm. The drive 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 faces upwards from the electric turntable. Then, one end of the wire in the wire feeding mechanism is fed into the housing 14, located between the extrusion cylinder 16 and the extrusion cylinder 20. Then, the drive device 2 15 is started to drive the extrusion cylinder 16 to rotate. Through the transmission of gear 17, synchronous pulley 24 and synchronous belt 25, the extrusion cylinder 16 and the extrusion cylinder 20 are driven to rotate, and the wire is transported to the area below the arc generator 27. The arc generator 27 generates a welding arc to melt the wire.

[0079] When the metal body is at a low height, the moving wheel at the bottom of the base frame 5 contacts the electric turntable. At this time, the L-plate 3 is compressed, causing the elastic element 2 to contract and accumulate elastic potential energy. As the height of the metal body gradually increases, the bottom of the metal body becomes stable. Simultaneously, the mechanical arm drive drives the arc generator 27 and plate 1 to gradually rise, causing the elastic element 2 to rise as well. At this time, the elastic element 2 releases its elastic potential energy and gradually extends to its natural state as plate 1 rises. This simultaneously causes the L-plate 3 at the bottom of the elastic element 2 to descend. The descent of L-plate 3 causes the base frame 5 to descend, and the base frame 5 causes the top... As frame 6 descends, top frame 6 drives rod 12 to descend along guide frame 13. At this time, as the distance between plate 1 and L plate 3 gradually increases, bottom frame 5 drives 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 block 2 37 to move in the direction of rod 2 38, thereby causing inclined block 2 37 to leave the top of inclined block 1 35. Then, through elastic element 3 34, inclined block 1 35 is driven to rise, thereby causing plate 2 32 and inclined block 1 35 to engage.

[0080] Then, the drive device 8 is started to drive the T-shaped rod 9 to rotate. The rotation of the T-shaped rod 9 drives the plate 32 and the inclined block 35 at its bottom to rotate, which in turn 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. Then elastic element 4 releases elastic potential energy, which in turn drives cooling cylinder 10 and grinding wheel 33 to press the metal body forcefully, so that cooling cylinder 10 and grinding wheel 33 are in close contact with the metal body.

[0082] At the same time, the infusion device 231 is started to transport the cooling liquid in the inner cavity of the cooling tank 28 through the telescopic hose 30 and the cylinder 17 to the inner cavity of the cooling cylinder 10. Then, the cooling cylinder 10 comes into contact with the vicinity of the molten wire to rapidly cool the molten area. The liquid in the inner cavity of the cooling cylinder 10 absorbs heat and becomes a high-temperature liquid.

[0083] Subsequently, the high-temperature liquid enters the inner cavity of the extrusion cylinder 20 along pipe 21, and then enters the inner cavity of the extrusion cylinder 16 along pipe 19, heating the extrusion cylinder 16 and the extrusion cylinder 20. The heated extrusion cylinder 20 and the extrusion cylinder 16 then roll the filament, making it easier for the filament to plasticize, eliminate bending, release internal stress, and suppress subsequent springback.

[0084] Subsequently, the liquid inside the squeezing cylinder 16 is transported along the pipe 22 to the top of the cooling tank 28 via the infusion device 23. The liquid inside the cooling tank 28 is then cooled by the cooler 29, thus completing the cycle.

[0085] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, 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 electric arc generator (27) connected to the plate (1) for generating a welding electric arc to melt a continuously fed wire material, characterized in that, Also includes: straightening mechanism, which is installed on the plate one (1); cooling mechanism, which is installed on the plate one (1) and is located on both sides of the electric arc generator (27), and the liquid inside is used to rapidly cool the metal parts in the forming process; polishing mechanism, which is provided on the cooling mechanism, is used for polishing the surface of the formed metal parts; The straightening mechanism comprises a mounting assembly, a circulating assembly, a cooling assembly, a transmission assembly, a pipe two (21), a gear (17), an extrusion cylinder one (16) and an extrusion cylinder two (20); the mounting assembly is installed on the plate one (1); the pipe two (21) is installed at the liquid outlet end of the cooling mechanism; the extrusion cylinder one (16) and the extrusion cylinder two (20) are provided with two groups, the two groups of extrusion cylinder one (16) and extrusion cylinder two (20) are installed in the mounting assembly, the circulating assembly for circulating the liquid flow is installed on the extrusion cylinder one (16) and the extrusion cylinder two (20), and the transmission assembly is installed on the two groups of extrusion cylinder one (16) and extrusion cylinder two (20); the electric arc generator (27) heats the wire material to form a metal body, and then the liquid inside the cooling mechanism cools the metal, and then the high-temperature liquid in the cooling mechanism is discharged into the circulating assembly along the pipe two (21), and then flows into the cooling assembly installed on the plate one (1) through the extrusion cylinder one (16) and the extrusion cylinder two (20).

2. A metal additive manufacturing device according to claim 1, wherein, The mounting assembly comprises a shell one (14), a driving device two (15) and a shell two (26); The shell one (14) is installed on the plate one (1), the driving device two (15) is installed thereon, one of the extrusion cylinder one (16) is connected with the output shaft of the driving device two (15), and the shell two (26) is installed at the bottom end of the shell one (14); the wire material enters from above the shell one (14) and is discharged from the shell two (26).

3. The metal additive manufacturing apparatus of claim 1, wherein, The circulating assembly comprises a circular plate (18), a pipe one (19), a pipe three (22) and a liquid conveying device one (23); A plurality of circular plates (18) are rotatably connected to the extrusion cylinder one (16) and the extrusion cylinder two (20); the two horizontal sections of the pipe one (19) are connected with the circular plate (18), and the lower horizontal section passes through the circular plate (18) and is located on one side of the inner cavity of the extrusion cylinder two (20) away from the circular plate (18); the pipe three (22) is installed on the circular plate (18), and the output end and the input end thereof are located in the cooling assembly and the inner cavity of the extrusion cylinder one (16) away from the circular plate (18) respectively; the liquid conveying device one (23) is installed on the pipe three (22).

4. The metal additive manufacturing device of claim 3, wherein, The transmission assembly comprises a gear (17), a synchronous wheel (24) and a synchronous belt (25); A plurality of gears (17) are installed on the extrusion cylinder one (16) and the extrusion cylinder two (20), the gears (17) on the two extrusion cylinder one (16) are engaged, and the gears (17) on the two extrusion cylinder two (20) are engaged; the synchronous wheel (24) is installed on one of the extrusion cylinder one (16) and the extrusion cylinder two (20), and the surface of the synchronous wheel (24) is sleeved with the synchronous belt (25).

5. The metal additive manufacturing apparatus of claim 1, wherein The cooling assembly comprises a cooling box (28), a cooler (29), a flexible hose (30) and a liquid conveying device two (31); Cooling box (28) is installed on the plate (1), the output end of the circulating assembly is located at the top end 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 flexible hose (30), the other end of the flexible hose (30) is connected with a cooling mechanism, and the flexible hose (30) is installed with a transfusion device (31).

6. The metal additive manufacturing apparatus of claim 1, wherein, The cooling mechanism comprises a movable unit, a limiting unit, a cylinder (7), a driving device (8), a T-shaped rod (9), a cooling cylinder (10) and a cylinder (11); The movable unit is installed below the plate (1) and is connected with the limiting unit; the cylinder (7) is installed on the movable unit and penetrates the liquid outlet end of the cooling assembly; the driving device (8) is installed on the cylinder (7) and the output shaft of the driving device (8) is connected with the T-shaped rod (9); the T-shaped rod (9) is installed with the cooling cylinder (10); the cylinder (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 with the cylinder (7).

7. A metal additive manufacturing device according to claim 6, wherein, The movable unit comprises a first elastic member (2), an L-shaped plate (3), a second elastic member (4), a bottom frame (5) and a top frame (6); The first elastic member (2) is installed at the bottom end of the plate (1) and the other end of the first elastic member (2) is connected with the L-shaped plate (3); the L-shaped plate (3) is connected with the second elastic member (4); the other end of the second elastic member (4) is connected with the bottom frame (5); and the top frame (6) is installed on the bottom frame (5).

8. A metal additive manufacturing device according to claim 7, wherein, The limiting unit comprises a rod (12) and a guide frame (13); The rod (12) is installed on the top frame (6) and the guide frame (13) is installed at the bottom end of the plate (1); the rod (12) is slidably connected in the guide frame (13); and the bottom end of the guide frame (13) is inclined.

9. The metal additive manufacturing apparatus of claim 7, wherein, The polishing mechanism comprises a plate (32), a polishing wheel (33), a third elastic member (34), an inclined block (35), a spring (36), an inclined block (37), a rod (38) and a guide plate (39); The plate (32) is installed on the T-shaped rod (9); the polishing wheel (33) is rotatably connected in the bottom frame (5); the third elastic member (34) is installed at the center of the polishing wheel (33) and the other end of the third elastic member (34) is connected with the inclined block (35); the spring (36) is installed on the bottom frame (5); one end of the rod (38) is installed with the inclined block (37) and the other end of the rod (38) penetrates the bottom frame (5) and is installed with a rotating wheel; the guide plate (39) is installed at the bottom end of the plate (1); the rod (38) walks on the guide plate (39) through the rotating wheel; the middle part of the inclined block (35) is provided with a clamping groove; when the inclined block (37) is away, the inclined block (35) rises through the elasticity of the third elastic member (34), so that the plate (32) is inserted into the clamping groove in the middle part of the inclined block (35).

Images