Novel oxygen content control structure for carrier gas type powder feeder of laser coaxial powder feeding equipment
By installing an oxygen content detection and alarm system in the carrier gas feeder of the laser coaxial powder feeding equipment, the problem of difficult oxygen content monitoring has been solved, ensuring printing quality and reducing costs.
Patent Information
- Application Number
- CN202423129716.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-18
AI Technical Summary
In the existing coaxial laser powder feeding equipment, the oxygen content of the carrier gas powder feeder is difficult to monitor in real time during the titanium alloy powder additive manufacturing process, which leads to oxidation of the printing area, affecting printing quality and cost.
A novel coaxial laser powder feeding device with a carrier gas type powder feeder was designed. By installing a vacuum detection tube and a solenoid valve inside the powder tank, the oxygen content inside the powder tank can be detected. The oxygen content monitoring determines whether the powder feeding pipeline is connected, and alarms and oxygen venting are triggered when the oxygen content exceeds the standard.
It enables real-time monitoring and control of the oxygen content inside the toner cartridge, avoiding oxidation, ensuring print quality, and reducing costs.
Smart Images
Figure CN223603447U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to additive manufacturing equipment component technical field especially relates to a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure. BACKGROUND
[0002] Additive manufacturing is commonly known as 3D printing, which is a technology for manufacturing three-dimensional objects by layering materials, unlike traditional cutting or material removal manufacturing methods, additive manufacturing gradually builds objects of desired shape in a bottom-up manner, and the laser coaxial powder feeding equipment carrier gas type powder feeder is one of common additive manufacturing equipment components, which serves as a material supply for the equipment body.
[0003] The existing laser coaxial powder feeding equipment carrier gas type powder feeder has the following disadvantages when in use: titanium alloy powder is increasingly widely used in the field of laser coaxial powder feeding additive manufacturing, due to the process characteristics of additive manufacturing, argon protection is required during the entire printing cycle, the oxygen content of the cabin is required to be continuous and stable in the forming state, when forming large-size components, the powder amount is very large, the powder feeder can add a fixed amount of powder each time, and the powder feeder is added with powder frequently during the entire printing cycle, and the powder tank and the powder feeding pipeline are prone to residual oxygen content during the process, which may cause the oxygen content of the local area to exceed the standard, resulting in local oxidation of the printed area, the oxygen content cannot be monitored in time due to the large volume of the printing cabin, and the local printing area has been completed printing when the oxygen content is found to be high, and the oxygen content of the entire printing cabin is affected, which requires re-replacement of argon, and seriously affects the printing continuity and cost, therefore, the utility model provides a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure. UTILITY MODEL CONTENTS
[0004] The main purpose of the utility model is to provide a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure, which is improved and optimized by improving the structure of the powder feeder, and the powder tank is washed separately after each powder addition, and whether the powder feeding pipeline is connected is determined by oxygen content monitoring, so that the influence of oxygen content caused by powder addition of the powder feeder is solved, and the problems in the background art can be effectively solved.
[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0006] The application discloses a novel oxygen content control structure of a carrier gas type powder feeder of a laser coaxial powder feeding device, which comprises a powder tank, a powder cover detachably connected to the top end of the powder tank, a gas supply pipeline arranged on one side of the powder tank and communicating with the inside of the powder tank, an electromagnetic valve A mounted on the bottom side of the powder tank and provided with an outlet powder pipe, a vacuum pump mounted on the top of the powder cover and communicating with the inside of the powder tank, an oxygen content detection pipe arranged on the surface of the powder tank away from the gas supply pipeline and provided with an electromagnetic valve B in the inside, and an oxygen content analyzer mounted on the bottom side of the powder tank and communicating with the oxygen content detection pipe.
[0007] Further, a filter element is mounted on the air suction end of the vacuum pump, and a spring diaphragm seal is arranged in the position where the inside of the powder cover is connected with the vacuum pump.
[0008] Further, a stirring shaft is vertically arranged in the inside of the powder tank, is connected with the power end of the machine body and can stir the powder in the inside of the powder tank, thereby ensuring the oxygen discharging quality.
[0009] Further, a controller and a buzzer are mounted on the bottom side of the powder tank close to the oxygen content analyzer, the signal output end of the oxygen content analyzer is connected with the signal input end of the controller, the control end of the controller is connected with the control end of the electromagnetic valve A and the electromagnetic valve B, and the control end of the controller is connected with the control end of the buzzer; the controller controls the operation of other components according to the detection result of the oxygen content analyzer, and can alarm through the buzzer when the oxygen content exceeds the standard.
[0010] Compared with the prior art, the novel oxygen content control structure of the carrier gas type powder feeder of the laser coaxial powder feeding device has the following beneficial effects: the main body of the carrier gas type powder feeder is a powder tank structure mounted on the top of the machine body; when powder adding treatment is needed, the electromagnetic valve A is closed to disconnect the connecting pipeline between the cabin and the powder tank, the inside of the cabin is kept stable, then the powder cover is opened, powder is filled into the inside of the powder tank, the powder cover is closed after the powder is filled, the oxygen content analyzer monitors the oxygen content in the inside of the powder tank, the vacuum pump is operated to discharge the oxygen in the inside of the powder tank and reduce the oxygen content, the gas supply pipeline is used to inject protective gas into the inside of the powder tank, the vacuum pump is stopped when the oxygen content monitored by the oxygen content analyzer reaches the standard, the powder in the inside of the powder tank is discharged through the outlet powder pipe, the oxygen content analyzer is used to monitor the oxygen content in the inside of the powder tank in real time, the electromagnetic valve A is closed by the controller when the oxygen content exceeds the standard, the inside of the cabin is kept stable, and the buzzer is used to alarm, so that the powder tank can be conveniently and quickly repaired and oxygen discharging treatment can be conveniently and quickly performed, and the oxygen content in the system during operation can meet the requirements. BRIEF DESCRIPTION OF DRAWINGS
[0011] Fig. 1The utility model relates to a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure's whole structure schematic diagram.
[0012] Fig. 2 The utility model relates to a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure's powder cover bottom structure schematic diagram.
[0013] Fig. 3 The utility model relates to a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure's existing powder feeder structure schematic diagram.
[0014] In the drawing: 1, vacuum pump;2, filter core;3, powder cover;4, stirring shaft;5, powder tank;6, gas supply line;7, powder outlet pipe;8, electromagnetic valve A;9, oxygen content detection tube;10, electromagnetic valve B;11, oxygen content analyzer;12, spring diaphragm seal;13, controller;14, buzzer. Specific implementation
[0015] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific implementation.
[0016] As Figs. 1-3 Shown, a novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure, including powder tank 5, the detachable connection of powder tank 5 top end has powder cover 3, powder tank 5 one side is provided with the gas supply line 6 of being linked with powder tank 5 inside, the bottom one side of powder tank 5 is installed with powder outlet pipe 7 and is installed with electromagnetic valve A 8 in powder outlet pipe 7 inside, the top of powder cover 3 is installed with the vacuum pump 1 of being linked with powder tank 5 inside, the surface of powder tank 5 is provided with oxygen content detection tube 9 and is installed with electromagnetic valve B 10 in oxygen content detection tube 9 inside away from gas supply tube one side, and the bottom one side of powder tank 5 is installed with the oxygen content analyzer 11 of being linked with oxygen content detection tube 9.
[0017] Among them, the filter core 2 is installed in the suction end of the vacuum pump 1, the spring diaphragm seal 12 is built-in in the connection position of the inside of the powder cover 3 and the vacuum pump 1, and the stirring shaft 4 is vertically installed in the inside of the powder tank 5. The filter core 2 structure plays a filtering role on the internal powder during the operation of the vacuum pump 1, avoids the powder from being sucked out, the spring diaphragm seal 12 does not affect the operation of the vacuum pump 1, simultaneously seals the suction port position after the vacuum pump 1 stops inhaling, maintains the internal sealed state, the stirring shaft 4 is connected with the power end of the body, can stir the powder in the inside of the powder tank 5, and ensures the oxygen removal quality.
[0018] The controller 13 is connected with the signal output end of the oxygen content analyzer 11, the control end of the controller 13 is connected with the control end of the electromagnetic valve A 8 and the electromagnetic valve B 10, and the control end of the controller 13 is connected with the control end of the buzzer 14; the controller 13 controls the operation of other components according to the detection result of the oxygen content analyzer 11, and when the oxygen content exceeds the standard, the buzzer 14 can alarm.
[0019] It should be noted that the utility model is a kind of novel laser coaxial powder feeding equipment carrier gas type powder feeder oxygen content control structure, when working, laser coaxial powder feeding equipment carrier gas type powder feeder main part is the powder tank 5 structure installed on the top of machine body, when needing to carry out powder adding treatment, electromagnetic valve A 8 is closed to disconnect the communication pipeline between cabin, keep cabin internal state stable, then open powder cover 3, load powder into the inside of powder tank 5, close powder cover 3 after loading, oxygen content analyzer 11 monitors the oxygen content in the inside of powder tank 5, while vacuum pump 1 operates, the oxygen in the inside of powder tank 5 is extracted, reduces internal oxygen content, gas supply line 6 flushes into protective gas in the inside of powder tank 5, when oxygen content analyzer 11 monitors internal oxygen content to reach standard, pipe wall vacuum pump 1, powder in the inside of powder tank 5 is discharged by powder outlet pipe 7 and used, while oxygen content analyzer 11 real-time monitoring oxygen content change in the inside of powder tank 5, when content exceeds the standard, controller 13 will close electromagnetic valve A 8, ensure cabin internal state, while alarming through buzzer 14, it is convenient and fast to overhaul and oxygen removal treatment, ensure that oxygen content meets the requirement in system operation process.
[0020] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-described embodiments, and the above-described embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.
Claims
1. A novel oxygen content control structure for a coaxial laser powder feeding device using a carrier gas type powder feeder, comprising a powder tank (5), characterized in that, The powder tank (5) is detachably connected to a powder cover (3) at the top. A gas supply pipe (6) connected to the inside of the powder tank (5) is provided on one side of the powder tank (5). A powder outlet pipe (7) is installed on one side of the bottom of the powder tank (5) and a solenoid valve A (8) is installed inside the powder outlet pipe (7). A vacuum pump (1) connected to the inside of the powder tank (5) is installed on the top of the powder cover (3). An oxygen content detection tube (9) is provided on the side of the powder tank (5) away from the gas supply pipe and a solenoid valve B (10) is installed inside the oxygen content detection tube (9). An oxygen content analyzer (11) connected to the oxygen content detection tube (9) is installed on one side of the bottom of the powder tank (5).
2. The oxygen content control structure of the carrier gas powder feeder in a novel laser coaxial powder feeding device according to claim 1, characterized in that: The vacuum pump (1) is equipped with a filter element (2) at the pumping end, and the powder cover (3) is equipped with a spring diaphragm seal (12) at the connection position with the vacuum pump (1).
3. The oxygen content control structure of the carrier gas powder feeder in a novel laser coaxial powder feeding device according to claim 1, characterized in that: A stirring shaft (4) is vertically installed inside the powder tank (5).
4. The oxygen content control structure of the carrier gas powder feeder in a novel laser coaxial powder feeding device according to claim 1, characterized in that: A controller (13) and a buzzer (14) are installed at the bottom of the powder tank (5) near the side where the oxygen content is relatively low. The signal output terminal of the oxygen content analyzer (11) is connected to the signal input terminal of the controller (13). The control terminal of the controller (13) is connected to the control terminals of solenoid valve A (8) and solenoid valve B (10). The control terminal of the controller (13) is connected to the control terminal of the buzzer (14).