Friction rolling equipment for metal additive manufacturing

Abstract

The friction rolling equipment for metal additive manufacturing comprises a side plate, one side of the side plate is fixedly connected with a friction impurity removal device, one side of the side plate is fixedly connected with a preheating device, the side, away from the preheating device, of the side plate is fixedly connected with a motor, and a driving shaft of the motor is fixedly connected with a round roller; the friction rolling equipment for metal additive manufacturing relates to the technical field of friction rolling, the surface of the friction round roller has certain roughness and makes contact with the surface of a metal additive in the rotating process, the friction round roller is in contact with the surface of the metal additive in the rotating process, and the friction round roller is in contact with the surface of the metal additive in the rotating process; and when the arc-shaped elastic plate makes contact with the surface of the metal additive, the rubber scraping piece can be better attached to the surface, the dust scraping effect is enhanced, after dust is scraped, the dust is powerfully bounced to fall into the sliding groove through elastic resilience, and dust residues in equipment are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of friction rolling, and in particular to a friction rolling device for metal additive manufacturing. Background Art

[0002] Metal additive is a kind of material that is extremely innovative and important in modern manufacturing. It is based on additive manufacturing technology. It constructs a three-dimensional solid structure by stacking metal materials layer by layer. Unlike traditional processing methods, metal additive can produce complex and fine geometric shapes. Metal additive can not only improve material utilization and reduce resource waste, but also bring greater flexibility to product design and manufacturing, and strongly promote the development of high-end manufacturing. Friction rolling is an important metal processing technology. The rotation of the friction roller drives the metal material forward through friction and applies pressure to it to cause plastic deformation of the metal material. This process can effectively change the shape, size and performance of the metal material, such as reducing the thickness of the metal material and improving its surface flatness. Moreover, under appropriate process parameters, it can also improve the microstructure of the metal material, refine the grains, and enhance the mechanical properties of the material;

[0003] The metal oxides on the surface of metal additives will reduce the effect of friction rolling, and the impurities on the surface of the round roller will reduce the surface quality of the metal additives, so we proposed a friction rolling equipment for metal additive manufacturing. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A friction rolling device for metal additive manufacturing, comprising a side plate, one side of the side plate is fixedly connected to a friction impurity removal device, one side of the side plate is fixedly connected to a preheating device, a side of the side plate away from the preheating device is fixedly connected to a motor, a driving shaft of the motor is fixedly connected to a round roller, a side of the side plate close to the preheating device is fixedly connected to a roller cleaning device, and the bottom of the side plate is fixedly connected to a base;

[0005] The friction impurity removal device includes a first rotating rod. A driving wheel is sleeved and fixedly connected to the first rotating rod. A transmission belt is sleeved and drivingly connected to the driving wheel. A driven wheel is drivingly connected to the inner side of the transmission belt. A dust collection mechanism is fixedly connected to the inner side of the driven wheel. One end of the first rotating rod penetrates and is fixedly connected with a friction roller. The surface of the friction roller has a certain roughness. During rotation, it contacts the surface of the metal additive, and the generated frictional force effectively removes metal oxides, improving the subsequent processing quality. One end of the first rotating rod is fixedly connected to the driving shaft of the motor. One end of the first rotating rod penetrates the side plate and is rotatably connected to the side plate. One side of the motor is fixedly connected to the side of the side plate away from the preheating device. One side of the dust collection mechanism is rotatably connected to the side plate through a rotating bolt. The dust collection mechanism includes a second rotating rod. A rectangular frame is sleeved and rotatably connected to the second rotating rod. One end of the second rotating rod penetrates and is fixedly connected with a cylinder. An arc-shaped elastic plate is fixedly connected to the side surface of the cylinder. When the arc-shaped elastic plate contacts the surface of the metal additive, it makes the rubber scraping blade better fit the surface, enhancing the dust scraping effect. After scraping the dust, the elastic rebound is used to forcefully bounce the dust into the chute, reducing the residue of dust inside the equipment. A rubber scraping blade is fixedly connected to the side of the arc-shaped elastic plate away from the cylinder. A corrugated elastic sheet is fixedly connected to the inner side of the arc-shaped elastic plate. The corrugated elastic sheet is inside the arc-shaped elastic plate, effectively preventing dust from being accidentally stuck in, and avoiding the arc-shaped elastic plate being blocked due to dust accumulation. A spring is fixedly connected to the inner side of the arc-shaped elastic plate. The spring plays a good buffering role when the arc-shaped elastic plate rebounds, preventing the dust from splashing due to excessive rebound force. A rubber strip is fixedly connected to the outer side of the arc-shaped elastic plate. A chute is formed on the side surface of the cylinder. An arc-shaped magnetic block is slidably connected to the inner wall of the chute. The arc-shaped magnetic block is installed in the chute. Using its own magnetism, it quickly adsorbs the metal dust sliding into the chute, facilitating the centralized cleaning by the staff. When there is too much dust on the surface, it can be easily slid along the inner wall of the chute for cleaning. After cleaning, it can be immediately put into use. One end of the second rotating rod is rotatably connected to the side of the side plate close to the preheating device through a rotating bolt. One end of the second rotating rod penetrates the driven wheel and is fixedly connected to the driven wheel. One side of the corrugated elastic sheet away from the arc-shaped elastic plate is fixedly connected to the side surface of the cylinder. One end of the spring away from the arc-shaped elastic plate is fixedly connected to the side surface of the cylinder.

[0006] Furthermore, the preheating device includes a fixed frame. Through holes are provided in both the top and bottom of the fixed frame, and electric heating tubes are fixedly connected to the inner walls of the through holes. The heat generated by the electric heating tubes is transferred to the surface of the metal additive through a heat transfer plate, reducing the deformation resistance of the metal additive and making the subsequent rolling process easier. An insulating plate is fixedly connected to the electric heating tube, and the insulating plate is installed on the upper surface of the electric heating tube, effectively blocking the upward transfer of the heat generated by the electric heating tube and preventing the round roller from being damaged by heat. A folded frame is fixedly connected to one side of the fixed frame. A rotating rod is rotatably connected to the inner wall of the folded frame through a rotating bolt. After the metal additive dust is removed, the rotating rod rotates itself through the frictional force generated with the surface of the metal additive and provides an additional driving force for the metal additive to assist it in smoothly entering the fixed frame. Rectangular plates are fixedly connected to both sides of the inner wall of the fixed frame. A roller is rotatably connected to one side of the rectangular plate through a rotating bolt. By contacting the side surface of the metal additive, the roller restricts its offset in the horizontal direction, ensuring that the metal additive moves along a predetermined path. At the same time, the rolling characteristics of the roller reduce the frictional force between the metal additive and the fixed frame, helping the metal additive to move smoothly and quickly. A heat transfer plate is fixedly connected to the inner wall of the fixed frame. The surface of the heat transfer plate is perforated, enabling the heat emitted by the electric heating tube to be effectively transferred to the surface of the metal additive and effectively avoiding the direct contact between the metal additive and the high-temperature electric heating tube, preventing quality problems such as damage and deformation of the metal additive due to local overheating. One side of the fixed frame away from the rectangular plate is fixedly connected to one side of the side plate, and the bottom of the insulating plate is fixedly connected to the top of the fixed frame.

[0007] Furthermore, the roll cleaning device includes an arc-shaped ventilation plate that closely adheres to the rotation path of the circular roll. After the air pump is started, the suction force generated through its rectangular air holes quickly adsorbs the impurities with weak adhesion on the surface of the circular roll into the interior, keeping the surface of the circular roll clean and improving the quality of roll pressing processing. One side of the arc-shaped ventilation plate is connected to a first air pipe, and an air pump is arranged at the middle position of the first air pipe. Rectangular air holes are formed on the inner side of the arc-shaped ventilation plate. A guide air plate is fixedly connected to the position below the rectangular air holes on the inner side of the arc-shaped ventilation plate. The guide air plate is installed obliquely below the rectangular air holes. When the air pump sucks air, it guides the airflow generated from the rectangular air holes to flow obliquely upward. This airflow can not only effectively adsorb the impurities that roll down due to gravity and enable them to smoothly enter the arc-shaped ventilation plate, but also prevent the impurities from shifting and scattering due to various factors, ensuring that the impurities are completely collected and maintaining the cleanliness of the environment around the equipment. A brush is fixedly connected to the inner side of the arc-shaped ventilation plate. For the impurities that are difficult to adsorb on the surface of the circular roll, the bristles of the brush can penetrate into the fine texture on the surface of the circular roll and brush off the impurities. A scraper is fixedly connected to the top of the inner side of the arc-shaped ventilation plate. The scraper closely adheres to the circular roll and completely scrapes off the residual impurities, realizing deep cleaning of the surface of the circular roll. The side of the arc-shaped ventilation plate away from the first air pipe is connected to a second air pipe, and one end of the second air pipe away from the arc-shaped ventilation plate is connected to a collection box. The absorbed impurities finally enter the interior of the collection box through the first air pipe and the second air pipe for collection, facilitating centralized treatment. An air hole is formed on one side of the top of the collection box. One end of the first air pipe penetrates through the side plate and is fixedly connected to the side plate. One end of the second air pipe penetrates through the side plate and is fixedly connected to the side plate.

[0008] The present invention provides a friction roll pressing device for metal additive manufacturing. It has the following beneficial effects:

[0009] 1. For this friction roll pressing device for metal additive manufacturing, the surface of the friction circular roll is provided with a certain roughness. During rotation, it contacts the surface of the metal additive, and the generated frictional force effectively removes metal oxides, improving the subsequent processing quality. When the arc-shaped elastic plate contacts the surface of the metal additive, it enables the rubber scraper to better adhere to the surface, enhancing the dust scraping effect. After the metal additive dust is removed, the rotating rod rotates itself through the frictional force generated with the surface of the metal additive and provides an additional driving force for the metal additive to assist it in smoothly entering the fixed frame. The arc-shaped ventilation plate closely adheres to the rotation path of the circular roll. After the air pump is started, the suction force generated through its rectangular air holes quickly adsorbs the impurities with weak adhesion on the surface of the circular roll into the interior, keeping the surface of the circular roll clean and improving the quality of roll pressing processing.

[0010] 2. The friction roll pressing equipment for metal additive manufacturing is provided with a friction impurity removal device. The surface of the friction round roll has a certain roughness and contacts the metal additive surface during rotation. The generated frictional force effectively removes metal oxides and improves the subsequent processing quality. When the arc-shaped elastic plate contacts the metal additive surface, it makes the rubber scraper better fit the surface, enhancing the dust scraping effect. After scraping the dust, the elastic rebound forcefully ejects the dust into the chute, reducing the residue of dust inside the equipment. The corrugated elastic plate is inside the arc-shaped elastic plate, effectively preventing dust from being accidentally stuck and avoiding the obstruction of the arc-shaped elastic plate caused by dust accumulation. The spring plays a good buffering role when the arc-shaped elastic plate rebounds, preventing dust from splashing due to excessive rebound force. The arc-shaped magnet is installed in the chute and uses its own magnetism to quickly adsorb the metal dust sliding into the chute, facilitating centralized cleaning by the staff. When there is too much surface dust, it can be easily slid along the inner wall of the chute for cleaning and can be put into use immediately after cleaning.

[0011] 3. The friction roll pressing equipment for metal additive manufacturing is provided with a preheating device. After the metal additive dust is removed, the rotating rod rotates itself through the frictional force generated with the metal additive surface and provides an additional driving force for the metal additive to assist it in smoothly entering the fixed frame. The heat generated by the electric heating tube is transmitted to the metal additive surface through the heat-conducting plate, reducing the deformation resistance of the metal additive and making the subsequent roll pressing process easier to carry out. The heat-conducting plate has holes on its surface, enabling the heat emitted by the electric heating tube to be effectively transmitted to the metal additive surface and effectively avoiding direct contact between the metal additive and the high-temperature electric heating tube, preventing quality problems such as damage and deformation of the metal additive due to local overheating. The roller contacts the side of the metal additive to limit its horizontal offset, ensuring that the metal additive moves along a predetermined path. At the same time, the rolling characteristics of the roller reduce the frictional force between the metal additive and the fixed frame, helping the metal additive move smoothly and quickly. The heat insulation plate is installed on the upper surface of the electric heating tube, effectively blocking the upward transmission of the heat generated by the electric heating tube and preventing the round roll from being damaged due to heat.

[0012] 4. The friction roll pressing equipment for metal additive manufacturing is provided with a roll cleaning device. The arc-shaped air vent plate closely adheres to the rotation path of the round roll. After the air pump is started, the suction force generated through its rectangular air holes quickly adsorbs the impurities with weak adhesion on the surface of the round roll into the interior, keeping the surface of the round roll clean and improving the quality of roll pressing processing. For the impurities that are difficult to adsorb on the surface of the round roll, the bristles of the brush can penetrate into the fine texture on the surface of the round roll to brush off the impurities. The scraper closely adheres to the round roll to completely scrape off the residual impurities, realizing deep cleaning of the surface of the round roll. The air guide plate is installed in an inclined shape below the rectangular air holes. When the air pump inhales air, it guides the air flow generated from the rectangular air holes to flow obliquely upward. This air flow can not only effectively adsorb the impurities that roll down due to gravity and make them smoothly enter the arc-shaped air vent plate, but also prevent the impurities from shifting and scattering due to various factors, ensuring that the impurities are completely collected and maintaining the cleanliness of the environment around the equipment. The absorbed impurities finally enter the interior of the collection box through the air pipe 1 and the air pipe 2 for collection, which is convenient for centralized treatment. Description of the Drawings

[0013] Figure 1 Schematic structural diagram of the friction roll pressing equipment for metal additive manufacturing of the present invention;

[0014] Figure 2 Schematic side structural diagram of the friction roll pressing equipment for metal additive manufacturing of the present invention;

[0015] Figure 3 Schematic structural diagram of the friction impurity removal device of the present invention;

[0016] Figure 4 Schematic structural diagram of the dust collection mechanism of the present invention;

[0017] Figure 5 Schematic structural diagram of the preheating device of the present invention;

[0018] Figure 6 Schematic sectional view of the preheating device of the present invention;

[0019] Figure 7 Schematic structural diagram of the roll cleaning device of the present invention;

[0020] Figure 8 Schematic side structural diagram of the roll cleaning device of the present invention.

[0021] In the figure: 1, side plate; 2, friction impurity removal device; 3, preheating device; 4, motor; 5, round roller; 6, roller cleaning device; 7, base; 21, first rotating rod; 22, driving wheel; 23, transmission belt; 24, driven wheel; 25, dust collection mechanism; 26, friction round roller; 27, electric motor; 251, second rotating rod; 252, rectangular frame; 253, cylinder; 254, arc-shaped elastic plate; 255, rubber blade; 256, corrugated elastic plate; 257, spring; 258, rubber strip; 259, chute; 2510, arc-shaped magnetic block; 31, fixed frame; 32, through hole; 33, electric heating tube; 34, heat insulation plate; 35, folded frame; 36, rotating rod; 37, rectangular plate; 38, roller; 39, heat conduction plate; 61, arc-shaped ventilation plate; 62, first air pipe; 63, air pump; 64, rectangular air hole; 65, air guide plate; 66, brush; 67, scraper; 68, second air pipe; 69, collection box; 610, air hole. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] For the first embodiment, please refer to Figures 1-4 , the present invention is a friction roll pressing device for metal additive manufacturing, including a side plate 1, a friction impurity removal device 2 is fixedly connected to one side of the side plate 1, a preheating device 3 is fixedly connected to one side of the side plate 1, a motor 4 is fixedly connected to the side of the side plate 1 away from the preheating device 3, a driving shaft of the motor 4 is fixedly connected to a round roller 5, a roller cleaning device 6 is fixedly connected to the side of the side plate 1 close to the preheating device 3, and a base 7 is fixedly connected to the bottom of the side plate 1;

[0024] The friction impurity removal device 2 includes a first rotating rod 21, on which an active wheel 22 is sleeved and fixedly connected. A transmission belt 23 is sleeved and drivingly connected on the active wheel 22. The inner side of the transmission belt 23 is drivingly connected with a driven wheel 24. The inner side of the driven wheel 24 is fixedly connected with a dust collection mechanism 25. One end of the first rotating rod 21 penetrates and is fixedly connected with a friction roller 26. One end of the first rotating rod 21 is fixedly connected with the driving shaft of a motor 27. One end of the first rotating rod 21 penetrates through the side plate 1 and is rotatably connected with the side plate 1. One side of the motor 27 is fixedly connected with the side of the side plate 1 away from the preheating device 3. One side of the dust collection mechanism 25 is rotatably connected with the side plate 1 through a rotating bolt. The dust collection mechanism 25 includes a second rotating rod 251, on which a rectangular frame 252 is sleeved and rotatably connected. One end of the second rotating rod 251 penetrates and is fixedly connected with a cylinder 253. An arc-shaped elastic plate 254 is fixedly connected to the side surface of the cylinder 253. A rubber scraping blade 255 is fixedly connected to the side of the arc-shaped elastic plate 254 away from the cylinder 253. A corrugated elastic sheet 256 is fixedly connected to the inner side of the arc-shaped elastic plate 254. A spring 257 is fixedly connected to the inner side of the arc-shaped elastic plate 254. A rubber strip 258 is fixedly connected to the outer side of the arc-shaped elastic plate 254. A chute 259 is formed on the side surface of the cylinder 253, and an arc-shaped magnetic block 2510 is slidably connected to the inner wall of the chute 259. One end of the second rotating rod 251 is rotatably connected with the side of the side plate 1 close to the preheating device 3 through a rotating bolt. One end of the second rotating rod 251 penetrates through the driven wheel 24 and is fixedly connected with the driven wheel 24. The side of the corrugated elastic sheet 256 away from the arc-shaped elastic plate 254 is fixedly connected with the side surface of the cylinder 253. One end of the spring 257 away from the arc-shaped elastic plate 254 is fixedly connected with the side surface of the cylinder 253. During use, start the friction impurity removal device 2, place the metal additive in the friction impurity removal device 2, remove and collect the metal oxides on the surface of the metal additive, and then heat the surface of the metal additive through the preheating device 3 to reduce the deformation resistance of the metal additive and make the subsequent rolling process easier to perform. Start the motor 4, and the preheated metal additive is transmitted between the two round rollers 5. The round rollers 5 perform a rolling operation on the metal additive to make the metal additive obtain a predetermined thickness and surface flatness. After the motor 27 is started, place the metal additive between the two friction rollers 26. The motor 27 drives the first rotating rod 21 to rotate, and the active wheel 22 and the rotating friction roller 26 fixed on the first rotating rod 21 rotate. The transmission belt 23 sleeved on the active wheel 22 is driven accordingly, driving the driven wheel 24 to rotate, and the second rotating rod 251 rotates accordingly. The surface of the friction roller 26 has a certain roughness, and the metal oxides on the surface of the metal additive are removed. The dust of the metal oxides may remain on the surface of the metal additive. The rotation of the second rotating rod 251 drives the cylinder and the arc-shaped elastic plate 254 fixed on the surface of the cylinder 253 to rotate simultaneously. During the rotation of the arc-shaped elastic plate 254, the rubber scraping blade 255 at its top contacts the metal additive to scrape the oxide dust on the surface of the metal additive. Since the arc-shaped elastic plate 254 has elasticity, it will undergo elastic deformation when contacting the metal additive.The corrugated elastic piece 256 and the spring 257 connected to its inner side are elastically deformed simultaneously. The scraped dust is bounced into the chute by the elastic deformation of the arc-shaped flexible plate and adsorbed by the arc-shaped magnet 2510. The spring 257 buffers the arc-shaped elastic plate 254 to prevent its rebound force from being too large and causing the dust to splash everywhere. The corrugated elastic piece 256 prevents the dust from getting stuck inside the arc-shaped elastic plate 254. When there is too much metal dust on the surface of the arc-shaped magnet 2510, it can be removed by sliding along the inner wall of the chute 259 and then used again.

[0025] The second embodiment, please refer to Figures 1-8 As shown in the figure, the present invention provides a friction roll pressing device for metal additive manufacturing: The preheating device 3 includes a fixed frame 31. Through holes 32 are provided at both the top and the bottom of the fixed frame 31. Electric heating tubes 33 are fixedly connected to the inner walls of the through holes 32. Heat insulation plates 34 are fixedly connected to the electric heating tubes 33. A folded frame 35 is fixedly connected to one side of the fixed frame 31. A rotating rod 36 is rotatably connected to the inner wall of the folded frame 35 through a rotating bolt. Rectangular plates 37 are fixedly connected to both sides of the inner wall of the fixed frame 31. A roller 38 is rotatably connected to one side of the rectangular plate 37 through a rotating bolt. A heat conduction plate 39 is fixedly connected to the inner wall of the fixed frame 31. One side of the fixed frame 31 away from the rectangular plate 37 is fixedly connected to one side of the side plate 1. The bottom of the heat insulation plate 34 is fixedly connected to the top of the fixed frame 31;

[0026] The cleaning roller device 6 includes an arc-shaped ventilation plate 61. One side of the arc-shaped ventilation plate 61 is connected to a first air pipe 62. A air pump 63 is arranged at the middle position of the first air pipe 62. A rectangular air hole 64 is opened on the inner side of the arc-shaped ventilation plate 61. A air guide plate 65 is fixedly connected to the position below the rectangular air hole 64 on the inner side of the arc-shaped ventilation plate 61. A brush 66 is fixedly connected to the inner side of the arc-shaped ventilation plate 61. A scraping plate 67 is fixedly connected to the top of the inner side of the arc-shaped ventilation plate 61. The side of the arc-shaped ventilation plate 61 away from the first air pipe 62 is connected to a second air pipe 68. One end of the second air pipe 68 away from the arc-shaped ventilation plate 61 is connected to a collection box 69. An air hole 610 is opened on one side of the top of the collection box 69. One end of the first air pipe 62 penetrates through the side plate 1 and is fixedly connected to the side plate 1. One end of the second air pipe 68 penetrates through the side plate 1 and is fixedly connected to the side plate 1. During use, after the dust on the surface of the metal additive is removed, the metal additive continues to move forward and contacts the rotating rod 36. Due to the frictional force, the rotating rod 36 rotates to assist the metal additive in moving and enters the center position of the fixed frame 31. The electric heating tubes 33 on the upper and lower sides emit heat, and the metal additive is heated through the heat conduction plate 39. The heat conduction plate 39 has holes on its surface, enabling the heat emitted by the electric heating tubes 33 to be effectively transferred to the surface of the metal additive. At the same time, it can avoid the direct contact between the metal additive and the electric heating tubes 33, preventing problems such as damage and deformation on the surface of the metal additive caused by local overheating. Roller wheels 38 are arranged on both sides of the fixed frame 31. By contacting the side of the metal additive, the horizontal offset of the metal additive is restricted, ensuring that the metal additive always moves along a predetermined path. The rolling characteristics of the roller wheels 38 can reduce the frictional force between the metal additive and the fixed frame 31, further assisting the metal additive to move smoothly and quickly. A heat insulation plate 34 is fixed on the upper surface of the electric heating tube 33 to block the upward transfer of heat and prevent the electric heating tube 33 from damaging the circular roller 5. Impurities will adhere to the surface of the circular roller 5 when the circular roller 5 performs a rolling process on the metal additive. The arc-shaped ventilation plate 61 is closely attached beside the rotation path of the circular roller 5, and its shape design is adapted to the outer contour of the circular roller 5, capable of covering the area on the surface of the circular roller 5 where impurities may adhere to the greatest extent. When the circular roller 5 rotates, the air pump 63 is started to perform an air suction operation. The suction force of the air pump 63 enables the suction force to act evenly on the surface of the circular roller 5 through the rectangular air holes 64 on the arc-shaped ventilation plate 61. For the impurities with weak adhesion and easy adsorption on the surface of the circular roller 5, under the action of the suction force generated by the air pump 63, they can be quickly adsorbed into the rectangular air holes and then enter the inside of the arc-shaped ventilation plate 61. When the circular roller 5 rotates past the brush 66, the bristles of the brush 66 can penetrate into the fine texture on the surface of the circular roller 5 to brush off the impurities that are difficult to adsorb. The scraping plate 67 can be closely attached to the surface of the circular roller 5. When the circular roller 5 rotates, the scraping plate 67 scrapes off the remaining impurities from the surface of the circular roller 5. The impurities brushed off by the brush 66 and scraped off by the scraping plate 67 start to roll down under the action of gravity. The air guide plate 65 is arranged below the rectangular air hole 64, and the air guide plate 65 is installed in an inclined shape. When the air pump 63 sucks air,The airflow generated from the rectangular air holes 64 flows obliquely upward under the guidance of the air guide plate 65, which can effectively adsorb the rolling impurities and suck them into the arc-shaped ventilation plate 61. At the same time, the air guide plate 65 can prevent the rolling impurities from shifting due to various factors, ensuring that the impurities can be completely sucked into the arc-shaped ventilation plate 61, avoiding the impurities from scattering around the equipment. Finally, the impurities adsorbed by the arc-shaped ventilation plate 61 are transported into the collection box 69 through the first air pipe 62 and the second air pipe 68.,

[0027] When the present invention is in operation, start the friction impurity removal device 2, place the metal additive in the friction impurity removal device 2, remove and collect the metal oxides on the surface of the metal additive. Subsequently, heat the surface of the metal additive through the preheating device 3 to reduce the deformation resistance of the metal additive, making the subsequent rolling process easier. Start the motor 4, and the preheated metal additive is transported between the two circular rollers 5. The circular rollers 5 perform a rolling operation on the metal additive to make the metal additive obtain a predetermined thickness and surface flatness. After the motor 27 is started, place the metal additive between the two friction circular rollers 26. The motor 27 drives the first rotating rod 21 to rotate, and the driving wheel 22 fixed on the first rotating rod 21 and the rotating friction circular roller 26 rotate. The transmission belt 23 sleeved on the driving wheel 22 is driven accordingly, driving the driven wheel 24 to rotate, and the second rotating rod 251 rotates accordingly. The surface of the friction circular roller 26 has a certain roughness to remove the metal oxides on the surface of the metal additive. The dust of its metal oxides may remain on the surface of the metal additive. The rotation of the second rotating rod 251 drives the cylinder and the arc-shaped elastic plate 254 fixed on the surface of the cylinder 253 to rotate simultaneously. During the rotation of the arc-shaped elastic plate 254, the rubber scraping piece 255 at its top contacts the metal additive to scrape the oxide dust on the surface of the metal additive. Since the arc-shaped elastic plate 254 has elasticity, it will undergo elastic deformation when contacting the metal additive, and the wave-shaped elastic piece 256 and the spring 257 connected to its inner side will undergo elastic deformation simultaneously. The scraped dust is bounced into the chute by the elastic deformation of the arc-shaped soft plate and adsorbed by the arc-shaped magnet 2510. The spring 257 buffers the arc-shaped elastic plate 254 to prevent its rebound force from being too large and causing the dust to splash everywhere. The wave-shaped elastic piece 256 prevents the dust from getting stuck inside the arc-shaped elastic plate 254. When there is too much metal dust on the surface of the arc-shaped magnet 2510, it can be slid off from the inner wall of the chute 259 and used again after cleaning. After the dust on the surface of the metal additive is removed, the metal additive continues to move forward and contacts the rotating rod 36. Due to the frictional force, the rotating rod 36 rotates to assist the movement of the metal additive and enters the central position of the fixed frame 31. The electric heating tubes 33 on the upper and lower sides emit heat, and the metal additive is heat-treated through the heat-conducting plate 39. The surface of the heat-conducting plate 39 has openings, enabling the heat emitted by the electric heating tubes 33 to be effectively transferred to the surface of the metal additive. At the same time, it can avoid the direct contact between the metal additive and the electric heating tubes 33, preventing problems such as damage and deformation on the surface of the metal additive caused by local overheating. The two sides of the fixed frame 31 are provided with rollers 38. By contacting the side surface of the metal additive, the horizontal offset of the metal additive is restricted to ensure that the metal additive always moves along a predetermined path. The rolling characteristics of the rollers 38 can reduce the frictional force between the metal additive and the fixed frame 31, further assisting the metal additive to move smoothly and quickly. The heat insulation plate 34 is fixed on the upper surface of the electric heating tube 33 to block the upward transfer of heat and prevent the electric heating tube 33 from damaging the circular roller 5. When the circular roller 5 performs a rolling treatment on the metal additive, impurities will adhere to its surface. The arc-shaped ventilation plate 61 is closely attached beside the rotation path of the circular roller 5, and its shape design is adapted to the outer contour of the circular roller 5.It can cover the area on the surface of the circular roller 5 where impurities may adhere to the greatest extent. When the circular roller 5 rotates, the air pump 63 is started to begin the suction operation. The suction force of the air pump 63 acts evenly on the surface of the circular roller 5 through the rectangular air holes 64 on the arc-shaped air vent plate 61. For the impurities on the surface of the circular roller 5 with weak adhesion and easy to adsorb, under the suction force generated by the air pump 63, they can be quickly adsorbed into the rectangular air holes and then enter the interior of the arc-shaped air vent plate 61. When the circular roller 5 rotates past the brush 66, the bristles of the brush 66 can penetrate into the fine texture on the surface of the circular roller 5 to brush off the impurities that are difficult to adsorb. The scraper 67 can be closely attached to the surface of the circular roller 5. When the circular roller 5 rotates, the scraper 67 scrapes off the remaining impurities from the surface of the circular roller 5. The impurities brushed off by the brush 66 and scraped off by the scraper 67 begin to roll down under the action of gravity. A gas guide plate 65 is arranged below the rectangular air hole 64. The gas guide plate 65 is installed in an inclined shape. When the air pump 63 sucks air, the airflow generated from the rectangular air hole 64 flows obliquely upward under the guidance of the gas guide plate 65, which can effectively adsorb the rolling impurities and suck them into the arc-shaped air vent plate 61. At the same time, the gas guide plate 65 can prevent the rolling impurities from shifting due to various factors, ensuring that the impurities can be completely sucked into the arc-shaped air vent plate 61 and avoiding the impurities from scattering around the equipment. Finally, the impurities adsorbed by the arc-shaped air vent plate 61 are transported to the collection box 69 through the first air pipe 62 and the second air pipe 68.,

[0028] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A friction rolling device for metal additive manufacturing, comprising a side plate (1), characterized in that: A friction impurity removal device (2) is fixedly connected to one side of the side plate (1), a preheating device (3) is fixedly connected to one side of the side plate (1), a motor (4) is fixedly connected to the side of the side plate (1) away from the preheating device (3), a round roller (5) is fixedly connected to the drive shaft of the motor (4), a roller cleaning device (6) is fixedly connected to the side of the side plate (1) close to the preheating device (3), and a base (7) is fixedly connected to the bottom of the side plate (1).

2. A friction rolling device for metal additive manufacturing according to claim 1, characterized in that: The friction impurity removal device (2) comprises a rotating rod (21), a driving wheel (22) is sleeved on and fixedly connected to the rotating rod (21), a transmission belt (23) is sleeved on and transmission-connected to the driving wheel (22), a driven wheel (24) is transmission-connected to the inner side of the transmission belt (23), a dust collecting mechanism (25) is fixedly connected to the inner side of the driven wheel (24), one end of the rotating rod (21) passes through and is fixedly connected to a friction roller (26), and one end of the rotating rod (21) is fixedly connected to a drive shaft of a motor (27).

3. A friction rolling device for metal additive manufacturing according to claim 2, characterized in that: One end of the rotating rod (21) passes through the side plate (1) and is rotatably connected to the side plate (1), one side of the motor (27) is fixedly connected to a side of the side plate (1) away from the preheating device (3), and one side of the dust collecting mechanism (25) is rotatably connected to the side plate (1) via a rotating bolt.

4. The friction rolling device for metal additive manufacturing according to claim 2, characterized in that: The dust collecting mechanism (25) comprises a second rotating rod (251), a rectangular frame (252) is sleeved on the second rotating rod (251) and rotatably connected, one end of the second rotating rod (251) penetrates and is fixedly connected to a cylinder (253), a side of the cylinder (253) is fixedly connected to an arc-shaped spring plate (254), a side of the arc-shaped spring plate (254) away from the cylinder (253) is fixedly connected to a rubber scraper (255), the inner side of the arc-shaped spring plate (254) is fixedly connected to a corrugated spring plate (256), the inner side of the arc-shaped spring plate (254) is fixedly connected to a spring (257), the outer side of the arc-shaped spring plate (254) is fixedly connected to a rubber strip (258), a sliding groove (259) is provided on the side of the cylinder (253), and an arc-shaped magnetic block (2510) is slidably connected to the inner wall of the sliding groove (259).

5. The friction rolling device for metal additive manufacturing according to claim 4, characterized in that: One end of the second rotating rod (251) is rotatably connected to a side of the side plate (1) close to the preheating device (3) via a rotating bolt, and one end of the second rotating rod (251) passes through the driven wheel (24) and is fixedly connected to the driven wheel (24).

6. The friction rolling device for metal additive manufacturing according to claim 4, characterized in that: The side of the corrugated spring sheet (256) away from the arc-shaped spring plate (254) is fixedly connected to the side of the cylinder (253), and the end of the spring (257) away from the arc-shaped spring plate (254) is fixedly connected to the side of the cylinder (253).

7. The friction rolling device for metal additive manufacturing according to claim 1, characterized in that: The preheating device (3) comprises a fixed frame (31), the top and bottom of the fixed frame (31) are both provided with through holes (32), the inner wall of the through hole (32) is fixedly connected to an electric heating tube (33), the electric heating tube (33) is fixedly connected to a heat insulation plate (34), one side of the fixed frame (31) is fixedly connected to a folding frame (35), the inner wall of the folding frame (35) is rotatably connected to a rotating rod (36) via a rotating bolt, both sides of the inner wall of the fixed frame (31) are fixedly connected to rectangular plates (37), one side of the rectangular plate (37) is rotatably connected to a roller (38) via a rotating bolt, and the inner wall of the fixed frame (31) is fixedly connected to a heat-conducting plate (39).

8. The friction rolling device for metal additive manufacturing according to claim 7, characterized in that: The side of the fixing frame (31) away from the rectangular plate (37) is fixedly connected to one side of the side plate (1), and the bottom of the heat insulation plate (34) is fixedly connected to the top of the fixing frame (31).

9. The friction rolling device for metal additive manufacturing according to claim 1, characterized in that: The roller cleaning device (6) comprises an arc-shaped ventilation plate (61), one side of the arc-shaped ventilation plate (61) is connected to an air pipe (62), an air pump (63) is arranged in the middle of the air pipe (62), a rectangular air hole (64) is provided on the inner side of the arc-shaped ventilation plate (61), an air guide plate (65) is fixedly connected to the inner side of the arc-shaped ventilation plate (61) below the rectangular air hole (64), a brush (66) is fixedly connected to the inner side of the arc-shaped ventilation plate (61), a scraper (67) is fixedly connected to the inner top of the arc-shaped ventilation plate (61), a side of the arc-shaped ventilation plate (61) away from the air pipe (62) is connected to an air pipe (68), an end of the air pipe (68) away from the arc-shaped ventilation plate (61) is connected to a collection box (69), and an air hole (610) is provided on one side of the top of the collection box (69).

10. The friction rolling device for metal additive manufacturing according to claim 9, characterized in that: One end of the air pipe 1 (62) passes through the side plate (1) and is fixedly connected to the side plate (1), and one end of the air pipe 2 (68) passes through the side plate (1) and is fixedly connected to the side plate (1).

Images