Powder feeding type laser additive manufacturing device with anti-blocking structure

Abstract

The utility model relates to the technical field of laser additive manufacturing devices, in particular to a powder feeding type laser additive manufacturing device with an anti-blocking structure. The utility model provides a powder feeding type laser additive manufacturing device with an anti-blocking structure, which comprises a laser additive manufacturing component, a conveying pipe, a three-way joint, an electric valve, a shunt pipe I and a conveying head I. The left side of the laser additive manufacturing component is provided with the conveying pipe, and the lower end of the conveying pipe is provided with the three-way joint; the top end of the three-way connector is communicated with the conveying pipe, the other two ends of the three-way connector are provided with electric valves, the front end of the three-way connector is communicated with a first flow dividing pipe, the other end of the first flow dividing pipe is provided with a first conveying head, and the first conveying head is communicated with a feeding port of the laser additive manufacturing assembly. An anti-blocking assembly is arranged at the upper end of the conveying pipe. And through the design of the miniature vibrator, continuous vibration is achieved during powder conveying, the powder is effectively prevented from blocking the pipeline, and smooth conveying is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of laser additive manufacturing equipment technology, and in particular to a powder-feeding laser additive manufacturing equipment with an anti-clogging structure. Background Technology

[0002] Powder-fed laser additive manufacturing is an advanced manufacturing technology that uses a high-energy laser beam as a heat source to melt and solidify powders of metals, alloys, or other materials layer by layer, thereby constructing complex three-dimensional solid parts. In powder-fed processes, powder is directly delivered to the surface of the workpiece through a nozzle, where it is instantly melted by the focused laser beam. This technology can be used to repair existing components, add material to specific areas, or create entirely new parts.

[0003] Currently, most powder-feeding laser additive manufacturing systems on the market mainly consist of a laser, a powder feeding system, a worktable, and a control unit. Among these, the powder feeding system, as the crucial link in delivering metal powder to the laser molten pool, directly determines the stability of the entire manufacturing process and the quality of the final product. However, in practical applications, the powder feeding stage often faces the problem of powder clogging.

[0004] Due to the physical properties of metal powders, such as irregular particle shape, uneven particle size distribution, and poor powder flowability, powder is prone to accumulation and retention at bends, diameter changes, and gaps in powder conveying components during the powder feeding process, leading to blockages. Furthermore, environmental factors such as air humidity and temperature changes can also affect the physical state of the powder, increasing the risk of blockages.

[0005] Therefore, there is a need to provide a powder-feeding laser additive manufacturing apparatus with an anti-clogging structure. Utility Model Content

[0006] To overcome the drawback of easy clogging, this utility model provides a powder-feeding laser additive manufacturing device with an anti-clogging structure.

[0007] A powder-feeding laser additive manufacturing device with an anti-clogging structure includes a laser additive manufacturing component, a conveying pipe, a tee connector, an electric valve, a first diverter pipe, and a first conveying head. The conveying pipe is installed on the left side of the laser additive manufacturing component. A tee connector is installed at the lower end of the conveying pipe. The top end of the tee connector is connected to the conveying pipe. Electric valves are installed at the other two ends of the tee connector. The first diverter pipe is connected to the front end of the tee connector. The first conveying head is installed at the other end of the first diverter pipe and is connected to the feed inlet of the laser additive manufacturing component. The device also includes an anti-clogging component, which is installed at the upper end of the conveying pipe.

[0008] Furthermore, the anti-clogging component includes a mounting shell and a micro vibrator. The upper end of the first diversion pipe and the outer side of the end near the first conveying head are also provided with mounting shells, and micro vibrators are installed inside the mounting shells.

[0009] Furthermore, it also includes a second diversion pipe and a second conveyor head. The second diversion pipe is connected to the rear end of the tee connector, and the second conveyor head is installed at the other end of the second diversion pipe. The second conveyor head is connected to another feed port of the laser additive manufacturing component. Mounting shells are provided on the upper end of the second diversion pipe and on the outer side of the end near the second conveyor head. Miniature vibrators are installed inside the mounting shells.

[0010] Furthermore, it also includes a fixed shell, a laser transmitter and a receiver. The lower outer side of both the first and second shunt tubes is provided with a fixed shell. The laser transmitter and receiver are symmetrically installed inside the fixed shell, and the laser transmitter and receiver are electrically connected.

[0011] Furthermore, it also includes LED color-changing lights, with LED color-changing lights installed on the outside of the mounting housing, and the LED color-changing lights are electrically connected to the nearby receiver.

[0012] Furthermore, it also includes a temperature controller, which is installed at the upper end of the delivery pipe.

[0013] The beneficial effects and significant advancements of this utility model are as follows:

[0014] This invention uses a mounting shell to install a micro vibrator, enabling the micro vibrator to vibrate continuously during the powder material conveying process. This design effectively prevents powder from accumulating and clogging in the pipeline, ensuring smooth powder conveying, reducing equipment downtime for maintenance due to blockage, and improving the stability and continuity of equipment operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the three-way connector, the diverter pipe, and the conveying head.

[0017] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, including the miniature vibrator, the second diverter tube, and the second conveyor head.

[0018] Figure 4 This is a three-dimensional structural diagram of the components of this utility model, including the three-way connector, the second conveying head, and the fixed shell.

[0019] Figure 5 This is an enlarged three-dimensional structural diagram of point A of this utility model.

[0020] The above-mentioned figures include the following reference numerals: 1. Laser additive manufacturing component, 2. Delivery pipe, 3. T-joint, 301. Electric valve, 4. Diverter pipe one, 5. Delivery head one, 6. Mounting housing, 7. Micro vibrator, 8. Diverter pipe two, 9. Delivery head two, 10. Fixed housing, 11. Laser emitter, 12. Receiver, 13. LED color-changing light, 14. Temperature controller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0022] Example: A powder-feeding laser additive manufacturing apparatus with an anti-clogging structure, such as... Figures 1-5As shown, the assembly includes a laser additive manufacturing component 1, a delivery pipe 2, a tee connector 3, an electric valve 301, a first diverter pipe 4, a first delivery head 5, a mounting housing 6, a micro vibrator 7, a second diverter pipe 8, a second delivery head 9, a fixed housing 10, a laser emitter 11, a receiver 12, an LED color-changing light 13, and a temperature controller 14. The laser additive manufacturing component 1 is the core component for laser additive manufacturing, enabling the layer-by-layer deposition and shaping of materials. The delivery pipe 2 is installed on the left side of the laser additive manufacturing component 1. The delivery pipe 2 is used to transport the powder material required for manufacturing, conveying the powder from an external source into the laser additive manufacturing component 1. A tee connector 3 is installed at the lower end of the delivery pipe 2, which is used to divert the powder material, allowing the powder to... The materials enter different conveying channels. The top of the three-way connector 3 is connected to the conveying pipe 2. Electric valves 301 are installed at the other two ends of the three-way connector 3. The electric valves 301 can control the opening and closing of the conveying channels. A diversion pipe 4 is connected to the front end of the three-way connector 3. The diversion pipe 4 extends downward to the feed inlet of the laser additive manufacturing component 1. A conveying head 5 is installed at the other end of the diversion pipe 4. The conveying head 5 is connected to the feed inlet of the laser additive manufacturing component 1. A mounting shell 6 is connected to the outer side of the upper end of the conveying pipe 2. A mounting shell 6 is also connected to the outer side of the upper end of the diversion pipe 4 and the end near the conveying head 5. A micro vibrator 7 is installed inside the mounting shell 6. The micro vibrator 7 can prevent the powder material from being shaken during the conveying process through vibration. To prevent blockage and ensure smooth powder delivery, a second diversion pipe 8 is connected to the rear end of the three-way connector 3. The second diversion pipe 8 extends downward to another feed port of the laser additive manufacturing component 1. A second conveyor head 9 is installed at the other end of the second diversion pipe 8, and the second conveyor head 9 is connected to another feed port of the laser additive manufacturing component 1. Mounting shells 6 are connected to the upper end of the second diversion pipe 8 and the outer side of the end near the second conveyor head 9. Miniature vibrators 7 are installed inside the mounting shells 6. Fixed shells 10 are connected to the outer side of the lower ends of the first diversion pipe 4 and the second diversion pipe 8. Laser emitters 11 and receivers 12 are symmetrically installed back-to-back inside the fixed shells 10. The laser emitters 11 and receivers 12 are electrically connected. The laser emitter 11 is used to emit laser signals and detect diversion. The flow of powder material in tube 4 and shunt tube 8 is monitored. Receiver 12 corresponds to laser emitter 11 and is used to receive the laser signal emitted by laser emitter 11. When the received signal changes, it indicates that the flow of powder material is abnormal. LED color-changing lights 13 are installed on the outside of the fixed shell 10. The LED color-changing lights 13 are electrically connected to the nearby receiver 12. When the receiver 12 detects abnormal flow of powder material, the LED color-changing lights 13 will change color and emit a warning signal. A temperature controller 14 is installed at the upper end of the conveying tube 2. The temperature controller 14 is located above the mounting shell 6 and is used to control the temperature of the powder material in the conveying tube 2 to ensure that the powder material is conveyed and manufactured at a suitable temperature.

[0023] When using the powder-feeding laser additive manufacturing device, first connect the device to the power supply. Set a suitable powder material conveying temperature on the temperature controller 14 to ensure stable powder material conveying. Adjust the initial state of the electric valve 301. Depending on the actual needs, select to open either the first shunt tube 4 or the second shunt tube 8, or open both shunt tubes simultaneously. Then press the start button of the device. The laser additive manufacturing component 1 begins to preheat, and the temperature controller 14 starts working to adjust the temperature of the powder material in the conveying tube 2 to the set value.

[0024] While waiting for the temperature to stabilize, observe the changes in the displayed value of the temperature controller 14 to ensure that the temperature eventually stabilizes within the set range. Once the laser additive manufacturing assembly 1 has finished preheating, open the corresponding electric valve 301 to allow the powder material to enter the first or second branch pipe 8 from the delivery pipe 2 through the tee connector 3.

[0025] During the powder material conveying process, the micro vibrator 7 continuously vibrates to prevent powder blockage within the pipes. The laser emitter 11 continuously emits a laser signal, which passes through the powder material within the first and second branch pipes 4 and 8, and is received by the receiver 12. When the powder material flows normally, the intensity of the laser signal received by the receiver 12 is stable. If the powder material flow is abnormal, such as blockage or excessive flow rate changes, the intensity of the laser signal received by the receiver 12 will change.

[0026] When the receiver 12 detects an abnormal signal, it will immediately send a signal to the LED color-changing light 13 that is electrically connected to it. The LED color-changing light 13 will change color and issue a warning signal to remind the operator to deal with it in time.

[0027] Powder material entering the laser additive manufacturing assembly 1 via conveyor head 5 or conveyor head 9 is melted and deposited layer by layer under the action of a laser beam, realizing additive manufacturing of the material. Operators ensure that the manufacturing quality meets the requirements by observing the operating status and manufacturing process of the laser additive manufacturing assembly 1.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A powder feeding type laser additive manufacturing device with anti-blocking structure, comprising a laser additive manufacturing assembly (1), a conveying pipe (2), a tee joint (3), an electric valve (301), a shunt pipe I (4) and a conveying head I (5), the left side of the laser additive manufacturing assembly (1) is provided with the conveying pipe (2), the lower end of the conveying pipe (2) is provided with the tee joint (3), the top end of the tee joint (3) is communicated with the conveying pipe (2), the other two ends of the tee joint (3) are provided with the electric valve (301), the front end of the tee joint (3) is communicated with the shunt pipe I (4), the other end of the shunt pipe I (4) is provided with the conveying head I (5), and the conveying head I (5) is communicated with the feeding port of the laser additive manufacturing assembly (1), characterized in that: It also includes anti-blocking assembly, the upper end of the conveying pipe (2) is provided with anti-blocking assembly. ​ 2. The powder feeding type laser additive manufacturing apparatus having a clogging prevention structure according to claim 1, characterized in that: The anti-blocking assembly includes mounting shell (6) and micro-vibrator (7), the upper end of the shunt pipe (4) and the outer side of the end close to the conveying head (5) are also provided with mounting shell (6), and the mounting shell (6) is internally provided with micro-vibrator (7).

3. The powder feeding type laser additive manufacturing apparatus having a clogging prevention structure according to claim 2, characterized in that: It also includes shunt pipe (8) and conveying head (9), the rear end of the tee joint (3) is communicated with shunt pipe (8), the other end of the shunt pipe (8) is provided with conveying head (9), the conveying head (9) is communicated with another feeding port of the laser additive manufacturing assembly (1), the upper end of the shunt pipe (8) and the outer side of the end close to the conveying head (9) are both provided with mounting shell (6), and the mounting shell (6) is internally provided with micro-vibrator (7).

4. The powder feeding type laser additive manufacturing apparatus having a clogging prevention structure according to claim 3, characterized in that: It also includes fixing shell (10), laser emitter (11) and receiver (12), the outer side of the lower end of the shunt pipe (4) and the shunt pipe (8) are both provided with fixing shell (10), the fixing shell (10) is internally provided with laser emitter (11) and receiver (12) in front-rear symmetry, and the laser emitter (11) is electrically connected with the receiver (12).

5. The powder-fed laser-based additive manufacturing device with anti-blocking structure according to claim 4, characterized in that: It also includes LED color-changing lamp (13), the outer side of the fixing shell (10) is provided with LED color-changing lamp (13), and the LED color-changing lamp (13) is electrically connected with the adjacent receiver (12).

6. The powder-fed laser-based additive manufacturing device having an anti-jamming structure according to claim 5, characterized in that: It also includes temperature controller (14), the upper end of the conveying pipe (2) is provided with temperature controller (14).

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