Substrate heating and powder recycling device for laser additive manufacturing equipment

Abstract

The invention discloses a substrate heating and powder recycling device for laser additive manufacturing equipment, which comprises an adjusting assembly, a powder collecting barrel, an electromagnetic induction substrate placing heater, a liftable outer ring, an argon nozzle, a powder conveying pipe and a multi-hole-site rotatable powder storage disc, and is characterized in that the adjusting assembly is arranged on the outer side of the powder collecting barrel; an electromagnetic induction substrate placing heater is fixedly mounted in the center of the inner wall of the powder collecting barrel, a liftable outer ring is arranged above the outer wall of the powder collecting barrel, the adjusting assembly is connected with the liftable outer ring, and a plurality of argon nozzles are fixedly mounted on the inner wall of the top of the liftable outer ring; according to the rapid substrate heating and powder recycling device for the coaxial powder feeding laser additive manufacturing equipment, a substrate can be accurately adjusted and located at the horizontal position, and the distance between a laser head and the substrate in the additive manufacturing process is kept stable; the substrate is heated in an electromagnetic induction heating mode, and the heating speed is high; and meanwhile, the powder can be stored in a classified mode, and rapid collection of the powder is achieved.

Description

Technical Field

[0001] This invention relates to the field of coaxial powder feeding laser additive manufacturing technology, and in particular to a substrate heating and powder recovery device for laser additive manufacturing equipment. Background Technology

[0002] Coaxial powder-feed laser additive manufacturing is a highly efficient and flexible metal material preparation technology. However, in current coaxial powder-feed laser additive manufacturing equipment, the substrate can only be placed on a simple, fixed sample preparation stage, and its position is adjusted manually, with limited adjustment precision. Substrate preheating requires a separate furnace, and due to temperature drops during transfer, the preheating temperature cannot be accurately controlled. Furthermore, because powder utilization is low during coaxial powder-feed laser additive manufacturing, powder recovery is necessary. However, current equipment can only recover all powder after printing, resulting in complex powder composition that is difficult to utilize effectively, thus failing to meet the requirement for timely powder recovery after composition adjustments. Therefore, designing a substrate heating and powder recovery device for laser additive manufacturing equipment is essential. Summary of the Invention

[0003] The problem solved by this invention is to provide a substrate heating and powder recovery device for laser additive manufacturing equipment. During use, the substrate can be placed horizontally, improving the accuracy of adjustment; moreover, the substrate is heated by electromagnetic induction heating, resulting in a fast heating rate; at the same time, it can classify and store different powders, realizing rapid powder collection.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A substrate heating and powder recovery device for laser additive manufacturing equipment includes an adjustment component, a powder collection cylinder, an electromagnetic induction substrate placement heater, a liftable outer ring, argon gas nozzles, a powder conveying pipe, a multi-position rotatable powder storage tray, and a PLC controller. The adjustment component is disposed on the outer side of the powder collection cylinder, and the electromagnetic induction substrate placement heater is fixedly installed in the center of the inner wall of the powder collection cylinder. The liftable outer ring is disposed on the upper part of the outer wall of the powder collection cylinder, and the adjustment component is connected to the liftable outer ring. Several argon gas nozzles are fixedly installed on the top inner wall of the liftable outer ring. The powder conveying pipe is connected and installed in the center of the bottom of the powder collection cylinder, and a multi-position rotatable powder storage tray is disposed below the bottom of the powder conveying pipe.

[0006] The adjustment assembly includes an annular adjustment frame, a hydraulic telescopic rod, an adjustable horizontal support, and support legs. The annular adjustment frame is fixedly installed on one side of the outer wall of the powder collection cylinder by welding. The top end face of the annular adjustment frame is fixedly installed with hydraulic telescopic rods around all four sides, and the power output end of the hydraulic telescopic rods is fixedly connected to the outer wall of the liftable outer ring. The bottom end face of the annular adjustment frame is fixedly installed with adjustable horizontal supports around all four sides, and one bottom end of the adjustable horizontal support is provided with support legs.

[0007] The electromagnetic induction substrate heater includes a magnetic induction coil, a magnetic induction heating plate, and a stepper motor. The magnetic induction coil is fixedly installed on the top of the inner wall of the powder collecting cylinder. The stepper motor is located at the center of the end face of the magnetic induction coil. The magnetic induction heating plate is fixedly installed on the top of the motor shaft of the stepper motor, and the magnetic induction heating plate is electrically connected to a PLC controller.

[0008] As a further aspect of the present invention: the powder collecting cylinder has a funnel-shaped structure, and the bottom end of the funnel of the powder collecting cylinder is fixedly connected to the top end of the powder conveying pipe by welding.

[0009] As a further aspect of the present invention: the number of argon nozzles is six, and the other end of each argon nozzle is connected to an external argon gas pipe.

[0010] As a further aspect of the present invention: a level is fixedly installed on one side of the top end face of the annular adjustment frame.

[0011] As a further aspect of the present invention: the bottom end of the adjustable horizontal bracket is connected to the bracket leg by a threaded hinge.

[0012] As a further aspect of the present invention: auxiliary frames are fixedly installed around the inner wall of the magnetic induction coil, and a base is fixedly installed at the other end of the four auxiliary frames, with the bottom end face of the base being fixedly connected to the top end face of the stepper motor.

[0013] As a further aspect of the present invention: the rotatable powder storage tray includes a storage base, a drive motor, a rotating shaft, a powder storage seat, and powder holes. The storage base is located below the bottom of the powder conveying pipe. The drive motor is fixedly installed in the center of the storage base. The top of the motor shaft of the drive motor is fixedly installed with a rotating shaft via a coupling. The top end of the rotating shaft is fixedly installed with a powder storage seat. Several powder holes are opened at the edge of the top end face of the powder storage seat. The bottom end of the powder conveying pipe is located directly above the top end face of one of the powder holes. A material cup is provided inside the powder hole.

[0014] The beneficial effects of this invention are as follows: the coaxial powder feeding laser additive manufacturing equipment with substrate rapid heating and powder recovery device has a simple structure and is easy to use; during use, the position of the substrate can be easily adjusted, making it easy to place the substrate horizontally and improving the accuracy of adjustment; moreover, heating the substrate by electromagnetic induction heating not only effectively provides accurate heating temperature and effectively avoids temperature drop during substrate transfer, but also has a fast heating rate, which is beneficial to improving processing efficiency; at the same time, it also facilitates the recovery and collection of powder, and can classify and store it according to different powders, realizing rapid powder collection and effectively improving powder utilization. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a control diagram of the present invention;

[0017] Figure 3 This is the overall front view of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the adjustment component of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the powder collection cylinder and the electromagnetic induction substrate where the heater is placed, according to the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the liftable outer ring of the present invention;

[0021] Figure 7 This is a cross-sectional view of the porous rotatable powder storage tray of the present invention;

[0022] Legend: 1. Adjustment component; 2. Powder collection cylinder; 3. Electromagnetic induction substrate for placing heater; 4. Liftable outer ring; 5. Argon nozzle; 6. Powder conveying pipe; 7. Multi-position rotatable powder storage tray; 8. PLC controller; 11. Ring adjustment frame; 12. Hydraulic telescopic rod; 13. Level; 14. Adjustable level support; 15. Support leg; 31. Magnetic induction coil; 32. Magnetic induction heating plate; 33. Auxiliary frame; 34. Stepper motor; 71. Storage base; 72. Drive motor; 73. Rotating shaft; 74. Powder storage seat; 75. Powder hole. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Specific implementation examples are given below.

[0025] See Figure 1-7 A substrate heating and powder recovery device for laser additive manufacturing equipment includes an adjustment component 1, a powder collection cylinder 2, an electromagnetic induction substrate placement heater 3, a liftable outer ring 4, an argon gas nozzle 5, a powder conveying pipe 6, a multi-position rotatable powder storage tray 7, and a PLC controller 8. The adjustment component 1 is provided on the outer side of the powder collection cylinder 2. The electromagnetic induction substrate placement heater 3 is fixedly installed in the center of the inner wall of the powder collection cylinder 2. The liftable outer ring 4 is provided on the upper part of the outer wall of the powder collection cylinder 2, and the adjustment component 1 is connected to the liftable outer ring 4. Several argon gas nozzles 5 are fixedly installed on the top inner wall of the liftable outer ring 4. The powder conveying pipe 6 is connected and installed in the center of the bottom of the powder collection cylinder 2. The multi-position rotatable powder storage tray 7 is provided below the bottom of the powder conveying pipe 6.

[0026] The adjustment assembly 1 includes an annular adjustment frame 11, a hydraulic telescopic rod 12, an adjustable horizontal support 14, and a support leg 15. The annular adjustment frame 11 is fixedly installed on one side of the outer wall of the powder collection cylinder 2 by welding. The hydraulic telescopic rod 12 is fixedly installed around the top end face of the annular adjustment frame 11, and the power output end of the hydraulic telescopic rod 12 is fixedly connected to the outer wall of the liftable outer ring 4. The adjustable horizontal support 14 is fixedly installed around the bottom end face of the annular adjustment frame 11, and a support leg 15 is provided at one bottom end of the adjustable horizontal support 14.

[0027] The electromagnetic induction substrate heater 3 includes a magnetic induction coil 31, a magnetic induction heating plate 32, and a stepper motor 34. The magnetic induction coil 31 is fixedly installed on the top of the inner wall of the powder collection cylinder 2. The stepper motor 34 is provided in the center of the end face of the magnetic induction coil 31. The magnetic induction heating plate 32 is fixedly installed on the top of the motor shaft of the stepper motor 34, and the magnetic induction heating plate 32 is electrically connected to a PLC controller 8.

[0028] The powder collecting cylinder 2 has a funnel-shaped structure. The bottom end of the funnel of the powder collecting cylinder 2 is fixedly connected to the top end of the powder conveying pipe 6 by welding, which facilitates the material to fall by gravity.

[0029] There are six argon nozzles 5, and the other end of each argon nozzle 5 is connected to an external argon gas pipe. The argon nozzles 5 facilitate the ejection of gas flow, which makes it easier to blow away the powder through the gas flow in the subsequent process.

[0030] A level 13 is fixedly installed on one side of the top end face of the annular adjustment frame 11 to facilitate observation of the horizontal condition.

[0031] One bottom end of the adjustable horizontal bracket 14 is connected to the bracket leg 15 by a threaded hinge; by rotating the adjustable horizontal bracket 14 and the bracket leg 15, the engagement length of the adjustable horizontal bracket 14 and the bracket leg 15 can be changed, so that the substrate supported by the whole device is horizontal.

[0032] Auxiliary frames 33 are fixedly installed around the inner wall of the magnetic induction coil 31, and a base is fixedly installed at the other end of the four auxiliary frames 23. The bottom end face of the base is fixedly connected to the top end face of the stepper motor 34, thereby improving the structural stability of the magnetic induction heating plate 32.

[0033] The rotatable powder storage tray 7 includes a storage base 71, a drive motor 72, a rotating shaft 73, a powder storage seat 74, and powder holes 75. The storage base 71 is located below the bottom of the powder conveying pipe 6. The drive motor 72 is fixedly installed in the center of the storage base 71. The top of the motor shaft of the drive motor 72 is fixedly installed with the rotating shaft 73 through a coupling. The top end of the rotating shaft 73 is fixedly installed with the powder storage seat 74. Several powder holes 75 are opened at the edge of the top end face of the powder storage seat 74. The bottom end of the powder conveying pipe 6 is located directly above the top end face of one of the powder holes 75. A material cup is set inside the powder hole 75. When the drive motor 72 inside the storage base 71 is working, it drives the rotating shaft 73 to rotate through the motor shaft, causing the powder storage seat 74 to rotate. This allows the powder holes 75 at different positions to be rotated to the bottom end of the powder conveying pipe 6, thereby facilitating powder collection and storage.

[0034] The working principle of this invention is as follows: During use, the powder collection cylinder 2 is supported by the adjusting component 1. The support height of the annular adjusting frame 11 can be adjusted by adjusting the support legs 15 and the adjustable horizontal support 14. The levelness can be observed using the level instrument 13, ensuring the powder collection cylinder 2 has a horizontal and stable support structure. The heater 3 is placed on the electromagnetic induction substrate for rapid heating. When the magnetic induction coil 31 on the inner wall of the powder collection cylinder 2 is working, it converts 50Hz power frequency electricity into approximately 20KHz high-frequency alternating current. Utilizing the principle of magnetic induction, electrical energy is converted into magnetic energy, causing the magnetic induction heating plate 32 installed between the auxiliary frames 33 to actively heat up under electromagnetic induction. The heating temperature is 0-500℃, and the heating temperature can be set according to requirements. Simultaneously, when the stepper motor 34 at the bottom of the base is working, it drives the magnetic induction heating plate 32 to rotate 360° horizontally via the motor shaft, facilitating powder collection during air blowing and precise position adjustment during printing. When it is necessary to reduce the magnetic induction heating plate 32... When cleaning the powder on the top of the hot plate 32, the hydraulic telescopic rod 12 operates, and the power output end can push the liftable outer ring 4 to move up and down on the outer wall of the powder collection cylinder 2. At the same time, the argon nozzle 5 is connected to the external argon pipeline, so that the airflow is sprayed out through the argon nozzle 5. When the argon nozzle 5 moves to the top outer side of the magnetic induction heating plate 32, it can blow off the powder on the surface of the magnetic induction heating plate 32. At the same time, the liftable outer ring 4 can also effectively prevent the powder from flying out. The powder falling through the powder collection cylinder 2 and the powder conveying pipe 6 is collected and stored through the multi-hole rotatable powder storage tray 7. The powder conveying pipe 6 can effectively prevent powder residue. When the drive motor 72 inside the storage base 71 is working, the motor shaft drives the rotating shaft 73 to rotate, so that the powder storage base 74 rotates and rotates the powder hole 75 to the bottom of the powder conveying pipe 6, so that the powder falling through the powder conveying pipe 6 can be collected and stored in the material cup inside the powder hole 75 for easy powder removal.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A substrate heating and powder recovery device for laser additive manufacturing equipment, characterized in that, The device includes an adjustment component, a powder collection cylinder, an electromagnetic induction substrate placement heater, a liftable outer ring, argon gas nozzles, a powder conveying pipe, a multi-position rotatable powder storage tray, and a PLC controller. The adjustment component is located on the outer side of the powder collection cylinder. The electromagnetic induction substrate placement heater is fixedly installed in the center of the inner wall of the powder collection cylinder. A liftable outer ring is located on the upper part of the outer wall of the powder collection cylinder, and the adjustment component is connected to the liftable outer ring. Several argon gas nozzles are fixedly installed on the top inner wall of the liftable outer ring. A powder conveying pipe is connected and installed in the center of the bottom of the powder collection cylinder. A multi-position rotatable powder storage tray is located below the bottom of the powder conveying pipe. The adjustment assembly includes an annular adjustment frame, a hydraulic telescopic rod, an adjustable horizontal support, and support legs. The annular adjustment frame is fixedly installed on one side of the outer wall of the powder collection cylinder by welding. The top end face of the annular adjustment frame is fixedly installed with hydraulic telescopic rods around all four sides, and the power output end of the hydraulic telescopic rods is fixedly connected to the outer wall of the liftable outer ring. The bottom end face of the annular adjustment frame is fixedly installed with adjustable horizontal supports around all four sides, and one bottom end of the adjustable horizontal support is provided with support legs. The electromagnetic induction substrate heater includes a magnetic induction coil, a magnetic induction heating plate, and a stepper motor. The magnetic induction coil is fixedly installed on the top of the inner wall of the powder collection cylinder. A stepper motor is provided at the center of the end face of the magnetic induction coil. A magnetic induction heating plate is fixedly installed on the top of the motor shaft of the stepper motor, and the magnetic induction heating plate is electrically connected to a PLC controller.

2. The rapid heating and powder recovery device for substrate of coaxial powder feeding laser additive manufacturing equipment according to claim 1, characterized in that, The powder collecting cylinder has a funnel-shaped structure, and the bottom end of the funnel of the powder collecting cylinder is fixedly connected to the top end of the powder conveying pipe by welding.

3. The rapid heating and powder recovery device for substrate in coaxial powder feeding laser additive manufacturing equipment according to claim 1, characterized in that, The number of argon gas nozzles is six, and the other end of each argon gas nozzle is connected to an external argon gas pipe.

4. The rapid heating and powder recovery device for substrate in coaxial powder feeding laser additive manufacturing equipment according to claim 1, characterized in that, A level is fixedly installed on one side of the top end face of the annular adjustment frame.

5. The rapid heating and powder recovery device for substrate in coaxial powder feeding laser additive manufacturing equipment according to claim 1, characterized in that, The bottom end of the adjustable horizontal bracket is connected to the bracket leg by a threaded hinge.

6. The rapid heating and powder recovery device for substrate in coaxial powder feeding laser additive manufacturing equipment according to claim 1, characterized in that, The inner wall of the magnetic induction coil is fixedly equipped with auxiliary frames on all four sides, and the other end of the four auxiliary frames is fixedly equipped with a base. The bottom end face of the base is fixedly connected to the top end face of the stepper motor.

7. The rapid heating and powder recovery device for substrate of coaxial powder feeding laser additive manufacturing equipment according to claim 1, characterized in that, The rotatable powder storage tray includes a storage base, a drive motor, a rotating shaft, a powder storage seat, and powder holes. The storage base is located below the bottom of the powder conveying pipe. The drive motor is fixedly installed in the center of the storage base. The top of the motor shaft of the drive motor is fixedly installed with a rotating shaft through a coupling. The top end of the rotating shaft is fixedly installed with a powder storage seat. Several powder holes are opened at the edge of the top end face of the powder storage seat. The bottom end of the powder conveying pipe is located directly above the top end face of one of the powder holes. A material cup is provided inside the powder hole.

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