Electron beam coaxial wire feeding additive manufacturing equipment

Abstract

The utility model discloses electron beam coaxial wire feeding additive manufacturing equipment, and belongs to the technical field of additive manufacturing. The electron beam coaxial wire feeding additive manufacturing equipment comprises a fixed table, a machining platform is arranged on the side walls of a plurality of movable plates, a buffer assembly is arranged at the bottom of the fixed table and comprises a supporting rod, the outer wall of a fixed box is sleeved with a buffer rubber sleeve, and a wire feeding additive device is arranged at the top of an inner cavity of the fixed box. The cooling efficiency of the two sides of workpieces of various heights can be improved, a plurality of hydraulic buffering cylinders can be matched with a rubber pad to conduct certain buffering and damping on the bottom of equipment, then the stability of the workpieces during printing is ensured, a buffering rubber sleeve can be used for effectively buffering and consuming external impact force, damage to the wire feeding and material adding device is avoided, and the production efficiency is improved. Moreover, the electromagnetic shielding layer can effectively suppress electromagnetic radiation, improves the stability of the equipment, and protects an operator and internal devices of the equipment from being affected by electromagnetic interference.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing, and more specifically to electron beam coaxial wire feeding additive manufacturing equipment. Background Art

[0002] Additive manufacturing, commonly known as 3D printing, is a manufacturing technology that integrates computer-aided design, material processing and forming technology, and is based on digital model files. It uses software and numerical control systems to stack special metal materials, non-metallic materials and medical biomaterials layer by layer through extrusion, sintering, melting, photocuring, spraying, etc. to produce physical objects. Electron beam coaxial wire feeding additive manufacturing equipment is a device that uses electron beam and coaxial wire feeding technology for metal additive manufacturing. The equipment uses a high-energy electron beam to heat metal powder or wire, melt it and deposit it on the surface of the workpiece, thereby realizing rapid and precise processing and manufacturing of the workpiece. Electron beam coaxial wire feeding additive manufacturing equipment has the advantages of fast processing speed, high manufacturing precision, and high material utilization rate. It is widely used in manufacturing processes in aerospace, automobile, shipbuilding and other fields.

[0003] However, in the actual use of the electron beam additive manufacturing process, the electron beam will melt the surface of the workpiece with high energy and quickly cool it to solidify. Since the high-energy electron beam will cause the surface temperature of the workpiece to rise sharply, if it is not cooled in time, it will cause the workpiece to overheat, resulting in uneven solidification speed or cracks and other defects. The mobile platform used by the existing electron beam coaxial wire feeding additive manufacturing equipment usually needs to move the workpiece for printing in a vacuum environment. Due to the vacuum environment, the heat dissipation efficiency of the mobile platform itself is extremely limited when it dissipates heat for the workpiece, and it takes a very long time to wait, which brings many inconveniences to the actual use.

[0004] In addition, the existing electron beam coaxial wire feeding additive manufacturing equipment is often affected by external vibrations during use, which in turn affects the printing accuracy of the internal workpiece. Secondly, the electron beam coaxial wire feeding additive manufacturing equipment contains complex optical, electronic and other precision components, such as lenses, electron beam gun heads, etc. When the equipment is subjected to external force impact, these equipment are easily damaged, thereby causing great property losses. Moreover, electron beam coaxial wire feeding additive manufacturing equipment is usually extremely sensitive to external electromagnetic interference, and external electromagnetic interference may affect these devices, resulting in equipment performance degradation or misoperation, which brings great troubles to use.

[0005] In view of this, we propose an electron beam coaxial wire feeding additive manufacturing device. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the utility model is to provide an electron beam coaxial wire feeding additive manufacturing device to solve the problems of poor workpiece cooling effect, poor protection and electromagnetic interference affecting internal printing accuracy proposed in the above background technology.

[0008] 2. Technical solution

[0009] The electron beam coaxial wire feeding additive manufacturing equipment comprises a fixed table, a screw motor 1 is arranged on the front outer wall of the fixed table, the output end of the screw motor 1 extends to the inside of the fixed table and is connected to the screw 1, the circumferential outer wall of the screw 1 is sleeved with a driving component, the driving component comprises a moving table, a screw motor 2 is arranged on the side wall of the moving table, the output end of the screw motor 2 extends to the inside of the moving table and is connected to the screw 2, the circumferential outer wall of the screw 2 is sleeved with a moving plate, a plurality of side walls of the moving plates are provided with processing platforms, a buffer component is arranged at the bottom of the fixed table, the buffer component comprises a support rod, a water storage tank is arranged at the bottom of the fixed table, a refrigeration controller and a water inlet are arranged on the front outer wall of the water storage tank, a fixed box is arranged on the top of the fixed table, a buffer rubber sleeve is sleeved on the outer wall of the fixed box, and a wire feeding additive device is arranged on the top of the inner cavity of the fixed box

[0010] Preferably, a hydraulic buffer cylinder is provided at the bottom of the plurality of support rods, an output end of the hydraulic buffer cylinder is connected to a connecting circular plate, and a rubber pad is provided at the bottom of the connecting circular plate.

[0011] Preferably, cooling components are provided on both sides of the processing platform, and the cooling components include connecting rods, and a plurality of connecting rods are rotatably connected with pipes, and the circumferential outer wall of the pipe is sleeved with gears and air outlet heads.

[0012] Preferably, a fixed plate and a fan are provided at the bottom of the inner cavity of the processing platform, and multiple side walls of the fixed plate are provided with telescopic motors. The output ends of the multiple telescopic motors are respectively connected to toothed rods meshing with gears, and the output ends of the multiple fans are connected to air supply pipes. The ends of the air supply pipes are sleeved on the side walls of the connecting rods and extend to the inside of the pipes.

[0013] Preferably, a cooling water pipe is further provided inside the processing platform, the end of the cooling water pipe is connected to a connecting water pipe, and a socket is provided on the side wall of the processing platform.

[0014] Preferably, a water pump and a mounting pipe are provided inside the water storage tank, the output end of the water pump is connected to a connecting hose, the end of the connecting hose is connected to the end of the cooling water pipe, and the end of the connecting water pipe is connected to the inside of the mounting pipe after passing through the socket.

[0015] Preferably, a cavity is provided at the bottom of the inner cavity of the water storage tank, a semiconductor refrigeration plate electrically connected to the refrigeration controller is provided inside the cavity, and a heat sink is provided at the bottom of the semiconductor refrigeration plate.

[0016] Preferably, the front outer wall of the fixed box is connected with a sealing door by a pin shaft, and the front outer wall of the sealing door is provided with an inert gas injection valve.

[0017] Preferably, a plurality of circular holes are provided inside the buffer rubber sleeve, and an electromagnetic shielding layer is provided on the inner wall of the buffer rubber sleeve.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the utility model has the following advantages: when performing additive printing on a metal workpiece, a water pump and a semiconductor refrigeration plate can be started, the semiconductor refrigeration plate can be used to cool the water source, and then the water pump can be used to input the cooled water into the cooling water pipe. At this time, the cooling water pipe can transmit the cold source in the cooling water to the inside of the processing platform, thereby cooling the bottom of the workpiece on the processing platform. Secondly, the drive of multiple telescopic motors can be used to make their respective toothed rods move back and forth, and the multiple toothed rods can be used to drive the pipe carrying the gear to swing and rotate. Then, the air outlet head on the pipe can blow air up and down for cooling according to the height of the workpiece. The cooling wind is the cold source generated by the cooling water pipe. While cooling the working platform, the cooling efficiency on both sides of workpieces of various heights is improved.

[0020] Moreover, during use, multiple hydraulic buffer cylinders can be used in conjunction with rubber pads to provide certain buffering and shock absorption to the bottom of the equipment, thereby ensuring the stability of the workpiece during printing. Secondly, the buffer rubber sleeve arranged on the outer wall of the fixed box can utilize the multiple circular holes and grooves arranged inside to effectively buffer and consume the external impact force, thereby avoiding damage to the components inside the wire feeding additive device. Secondly, an electromagnetic shielding layer is also provided inside the buffer rubber sleeve, which can effectively suppress electromagnetic radiation, improve equipment stability, and protect operators and internal devices of the equipment from electromagnetic interference, thereby ensuring stable printing of the equipment while improving the protection performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the drive assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the processing platform of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the water storage tank of the utility model;

[0025] Explanation of reference numerals in the figure: 100, fixed platform; 110, screw motor 1; 120, support rod; 130, hydraulic buffer cylinder; 140, connecting circular plate; 150, rubber pad; 200, moving platform; 210, screw motor 2; 220, moving plate; 230, processing platform; 231, fixed plate; 232, telescopic motor; 233, toothed rod; 234, cooling water pipe; 235, connecting water pipe; 236, socket; 240, connecting rod; 250. Pipe; 251. Gear; 252. Air outlet; 260. Fan; 300. Water storage tank; 310. Refrigeration controller; 320. Water inlet; 330. Water pump; 340. Mounting pipe; 350. Cavity; 360. Semiconductor refrigeration plate; 370. Heat sink; 400. Fixed box; 410. Sealed door; 420. Inert gas injection valve; 430. Buffer rubber sleeve; 440. Electromagnetic shielding layer; 500. Wire feeding additive device. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] See also Figure 1-4 , the utility model provides a technical solution:

[0030] The electron beam coaxial wire feeding additive manufacturing device comprises a fixed table 100, a screw motor 110 is arranged on the front outer wall of the fixed table 100, the output end of the screw motor 110 is extended to the inside of the fixed table 100 and then connected to the screw 1, the circumferential outer wall of the screw 1 is sleeved with a driving component, the driving component comprises a moving table 200, a screw motor 210 is arranged on the side wall of the moving table 200, the output end of the screw motor 210 is extended to the inside of the moving table 200 and then connected to the screw 2, a moving plate 220 is sleeved on the circumferential outer wall of the screw 2, and a plurality of moving plates 220 are provided with a processing platform 230 on the side walls;

[0031] It is convenient to move the processing platform 230 so that it can cooperate with the wire feeding additive device 500 to print and shape the workpiece;

[0032] A buffer assembly is provided at the bottom of the fixed platform 100, and the buffer assembly includes a support rod 120. A water tank 300 is provided at the bottom of the fixed platform 100, and a refrigeration controller 310 and a water inlet 320 are provided on the front outer wall of the water tank 300. A fixed box 400 is provided on the top of the fixed platform 100, and a buffer rubber sleeve 430 is sleeved on the outer wall of the fixed box 400. A wire feeding additive device 500 is provided on the top of the inner cavity of the fixed box 400.

[0033] In some embodiments: the wire feeding additive device 500 generally includes a wire feeding system, a heating system, a print head, an up and down moving system and a control system, which facilitates melting the metal wire and then stacking it layer by layer, and then processing it into a workpiece of the desired shape, all of which belong to the prior art.

[0034] Specifically, a hydraulic buffer cylinder 130 is provided at the bottom of the multiple support rods 120, and the output end of the hydraulic buffer cylinder 130 is connected to a connecting circular plate 140. A rubber pad 150 is provided at the bottom of the connecting circular plate 140, which is convenient for setting a buffer and shock absorption on the bottom of the equipment and improving stability during processing.

[0035] Furthermore, cooling components are provided on both sides of the processing platform 230, and the cooling components include connecting rods 240, and pipes 250 are rotatably connected between the multiple connecting rods 240. The circumferential outer wall of the pipe 250 is sleeved with a gear 251 and an air outlet head 252, so that the swing of the air outlet head 252 can be used to evenly and effectively cool the workpiece.

[0036] Furthermore, a fixed plate 231 and a fan 260 are provided at the bottom of the inner cavity of the processing platform 230, and multiple telescopic motors 232 are provided on the side walls of the fixed plates 231. The output ends of the multiple telescopic motors 232 are respectively connected to toothed rods 233 meshing with the gears 251, and the output ends of the multiple fans 260 are connected to air supply pipes. The ends of the air supply pipes are sleeved on the side walls of the connecting rods 240 and extend to the inside of the pipe 250, so as to facilitate the reciprocating motion of the toothed rods 233 to drive the blowing head 252 to swing.

[0037] Furthermore, a cooling water pipe 234 is provided inside the processing platform 230 , a connecting water pipe 235 is connected to the end of the cooling water pipe 234 , and a socket 236 is provided on the side wall of the processing platform 230 .

[0038] In some embodiments, the cooling water pipe 234 is a copper pipe, which is convenient for circulating water cooling.

[0039] It is worth mentioning that a water pump 330 and a mounting pipe 340 are provided inside the water tank 300. The output end of the water pump 330 is connected to a connecting hose, and the end of the connecting hose is connected to the end of the cooling water pipe 234. The end of the connecting water pipe 235 passes through the socket 236 and is connected to the inside of the mounting pipe 340, so as to facilitate the circulation and cooling of the cooling water for reuse and reduce the waste of water resources.

[0040] It is worth noting that a cavity 350 is opened at the bottom of the inner cavity of the water storage tank 300 , a semiconductor refrigeration plate 360 ​​electrically connected to the refrigeration controller 310 is arranged inside the cavity 350 , and a heat sink 370 is arranged at the bottom of the semiconductor refrigeration plate 360 ​​.

[0041] In some embodiments: The semiconductor refrigeration plate 360 ​​is a refrigeration device that works based on the Peltier effect, and its structure is composed of two different types of semiconductor materials. By passing an electric current between the two semiconductor materials, heat can be moved to achieve a cooling effect. The heat sink arranged at the heating end can better dissipate heat, and the refrigeration controller can control the power of the semiconductor refrigeration plate 360, and then control its cooling effect and switch, all of which belong to the prior art.

[0042] In addition, the front outer wall of the fixed box 400 is connected to a sealing door 410 by a pin shaft, and an inert gas injection valve 420 is provided on the front outer wall of the sealing door 410 to facilitate the filling of the fixed box 400 with inert gas to replace the vacuum environment and perform better stacking and printing of the workpiece.

[0043] In some embodiments: the outer wall of the sealing door 410 is provided with the same buffer rubber sleeve 430 and electromagnetic shielding layer 400 to better protect the equipment.

[0044] In some embodiments: Commonly used inert gases include nitrogen and argon, both of which have the property of not chemically reacting with metal materials and are suitable for use in additive manufacturing processes.

[0045] In addition, a plurality of circular holes are provided inside the buffer rubber sleeve 430 , and an electromagnetic shielding layer 440 is provided on the inner wall of the buffer rubber sleeve 430 , so as to provide better protection for the equipment.

[0046] In some embodiments: the device can be powered by an external conventional power supply, and the device can be controlled by an external console, all of which belong to the prior art.

[0047] In addition, the circuits, electronic components and modules involved in the utility model are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and methods.

[0048] Working principle: When performing additive printing on a metal workpiece, the water pump 330 and the semiconductor refrigeration plate 360 ​​can be started, and the semiconductor refrigeration plate 360 ​​can be used to cool the water source. Then, the water pump 330 is used to input the cooled water into the cooling water pipe 234. At this time, the cooling water pipe 234 can transmit the cold source in the cooling water to the inside of the processing platform 230, and then cool the bottom of the workpiece on the processing platform 230. Secondly, the drive of multiple telescopic motors 232 can be used to make their respective toothed rods 233 move back and forth, and the multiple toothed rods 233 are used to drive the pipe 250 carrying the gear 251 to swing and rotate. Then, the air outlet head 252 on the pipe 250 can blow air up and down to cool the workpiece according to the height of the workpiece, and the cooling wind is the cold source generated by the cooling water pipe 234 While cooling the working platform 230, the cooling efficiency on both sides of workpieces of various heights is improved. In addition, during use, multiple hydraulic buffer cylinders 130 can be used in conjunction with rubber pads 150 to provide certain buffering and shock absorption for the bottom of the equipment, thereby ensuring the stability of the workpiece during printing. Secondly, the buffer rubber sleeve 430 arranged on the outer wall of the fixed box 400 can utilize the multiple circular holes and grooves arranged inside to effectively buffer and consume the external impact force, thereby avoiding damage to the components inside the wire feeding additive device 500. Secondly, an electromagnetic shielding layer 440 is also arranged inside the buffer rubber sleeve 430, which can effectively suppress electromagnetic radiation, improve equipment stability, and protect operators and internal devices of the equipment from electromagnetic interference, thereby ensuring stable printing of the equipment while improving the protection performance of the equipment.

[0049] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An electron beam coaxial wire feeding additive manufacturing device, comprising a fixed table (100), characterized in that: The fixed platform (100) is provided with a screw motor 1 (110) on the front outer wall, the output end of the screw motor 1 (110) extends into the fixed platform (100) and is connected to a screw rod 1, the outer circumferential wall of the screw rod 1 is sleeved with a driving component, the driving component comprises a moving platform (200), the side wall of the moving platform (200) is provided with a screw motor 2 (210), the output end of the screw motor 2 (210) extends into the moving platform (200) and is connected to a screw rod 2, the outer circumferential wall of the screw rod 2 is sleeved with a moving plate (220), and a plurality of the moving plates (220) are provided. ) is provided with a processing platform (230) on the side wall, a buffer assembly is provided at the bottom of the fixed platform (100), the buffer assembly includes a support rod (120), a water storage tank (300) is provided at the bottom of the fixed platform (100), a refrigeration controller (310) and a water inlet (320) are provided on the front outer wall of the water storage tank (300), a fixed box (400) is provided on the top of the fixed platform (100), a buffer rubber sleeve (430) is sleeved on the outer wall of the fixed box (400), and a wire feeding additive device (500) is provided on the top of the inner cavity of the fixed box (400).

2. The electron beam coaxial wire feeding additive manufacturing equipment according to claim 1, characterized in that: A hydraulic buffer cylinder (130) is arranged at the bottom of the plurality of support rods (120), an output end of the hydraulic buffer cylinder (130) is connected to a connecting circular plate (140), and a rubber pad (150) is arranged at the bottom of the connecting circular plate (140).

3. The electron beam coaxial wire feeding additive manufacturing device according to claim 2, characterized in that: Cooling components are arranged on both sides of the processing platform (230), and the cooling components include connecting rods (240). A plurality of connecting rods (240) are rotatably connected to a pipe (250), and a gear (251) and an air outlet head (252) are sleeved on the circumferential outer wall of the pipe (250).

4. The electron beam coaxial wire feeding additive manufacturing device according to claim 3, characterized in that: A fixing plate (231) and a fan (260) are provided at the bottom of the inner cavity of the processing platform (230); a plurality of telescopic motors (232) are provided on the side walls of the fixing plates (231); the output ends of the plurality of telescopic motors (232) are respectively connected to toothed rods (233) meshing with gears (251); the output ends of the plurality of fans (260) are connected to air supply pipes; the ends of the air supply pipes are sleeved on the side walls of the connecting rods (240) and extend into the interior of the pipe (250).

5. The electron beam coaxial wire feeding additive manufacturing device according to claim 4, characterized in that: A cooling water pipe (234) is also provided inside the processing platform (230), the end of the cooling water pipe (234) is connected to a connecting water pipe (235), and a socket (236) is provided on the side wall of the processing platform (230).

6. The electron beam coaxial wire feeding additive manufacturing device according to claim 5, characterized in that: A water pump (330) and a mounting pipe (340) are arranged inside the water storage tank (300); the output end of the water pump (330) is connected to a connecting hose; the end of the connecting hose is connected to the end of the cooling water pipe (234); and the end of the connecting water pipe (235) passes through the socket (236) and is connected to the inside of the mounting pipe (340).

7. The electron beam coaxial wire feeding additive manufacturing device according to claim 5, characterized in that: A cavity (350) is provided at the bottom of the inner cavity of the water storage tank (300), a semiconductor refrigeration plate (360) electrically connected to the refrigeration controller (310) is arranged inside the cavity (350), and a heat sink (370) is arranged at the bottom of the semiconductor refrigeration plate (360).

8. The electron beam coaxial wire feeding additive manufacturing device according to claim 6, characterized in that: The front outer wall of the fixed box (400) is connected to a sealing door (410) by a pin shaft, and the front outer wall of the sealing door (410) is provided with an inert gas injection valve (420).

9. The electron beam coaxial wire feeding additive manufacturing device according to claim 7, characterized in that: A plurality of circular holes and slots are provided inside the buffer rubber sleeve (430), and an electromagnetic shielding layer (440) is provided on the inner wall of the buffer rubber sleeve (430).

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