CN207823966U - A kind of air-tightness powder sieving system applied to metal 3D printer - Google Patents

A kind of air-tightness powder sieving system applied to metal 3D printer Download PDF

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Publication number
CN207823966U
CN207823966U CN201820107532.9U CN201820107532U CN207823966U CN 207823966 U CN207823966 U CN 207823966U CN 201820107532 U CN201820107532 U CN 201820107532U CN 207823966 U CN207823966 U CN 207823966U
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powder
metal
air
metal powder
machine structure
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王迪
杜俊杰
周权
杨永强
林康杰
宋长辉
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The utility model discloses a kind of air-tightness powder sieving systems applied to metal 3D printer;Including feeding mechanism, oscillating sieving machine structure, powder collecting mechanism and the control module set gradually from top to bottom;Feeding mechanism is used to metal powder being conveyed to oscillating sieving machine structure;Oscillating sieving machine structure is used to carry out vibration screening to metal powder;Powder collecting mechanism to the metal powder of vibration screening for being collected storage;Connection between feeding mechanism, oscillating sieving machine structure and powder collecting mechanism connects for hermetic seal, and charging, vibrating screen powder and the collection storage process of metal powder is made to be carried out under the sealed pathway with atmospheric isolation;This air-tightness powder sieving System and method for considerably increases stability when metal powder screening, greatly improves the speed of sieve powder, effectively prevent powder contaminated, while extending the service life of the components such as sieve.

Description

A kind of air-tightness powder sieving system applied to metal 3D printer
Technical field
The utility model is related to metal powder screening plant more particularly to a kind of air-tightness applied to metal 3D printer Powder sieving system.
Background technology
Metal 3D printing technique has the advantages that personalized designs, molding is quick, the manufacturing cycle is short, is very suitable for small quantities of Amount, the personalized, manufacture with complex surface and internal structure metal parts.During 3D printing metal powder, high energy The laser of metric density acts directly on metal powder, and laser fast scan movement, keeps metal powder rapid melting fast again Quickly cooling is solidifying, so phenomena such as the normal accompanied splash of the 3D printing of metal, nodularization, this splashing particulate pollutant is mingled in metal powder, The diameter of powder directly influences the precision and intensity of printing part, the splashing particle in the metal powder of recycling Pollutant makes the quality for printing part decline, therefore screening system is the important preprocessing link for ensureing print quality.
Since metal powder has the characteristics that be easy contaminated, and traditional structure lacks the air seal of integrated model Property, therefore it is be easy to cause the pollution of screening materials carrying, influence product quality;Lack the protection mechanism to metal powder in traditional structure, This will make metal powder generate electrostatic during being sized or is the harm aoxidized etc., lower product matter significantly Amount.
Invention content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts and deficiency provide a kind of applied to metal 3D The air-tightness powder sieving system of printer.The utility model can increase substantially stability when metal powder screening, significantly The speed for promoting sieve powder, effectively prevent powder contaminated, realizes the multiple protective to metal powder, while extending vibration electricity Machine, the service life of the components such as sieve, to reach the saving energy, the purpose increased economic efficiency.
The utility model is achieved through the following technical solutions:
A kind of air-tightness powder sieving system applied to metal 3D printer, including the charging that sets gradually from top to bottom Mechanism, oscillating sieving machine structure, powder collecting mechanism and control module;Feeding mechanism is used to metal powder being conveyed to vibrating screen Powder mechanism;Oscillating sieving machine structure is used to carry out vibration screening to metal powder;Powder collecting mechanism is used for the gold to vibration screening Belong to powder and is collected storage;
Connection between the feeding mechanism, oscillating sieving machine structure and powder collecting mechanism connects for hermetic seal, makes gold Charging, vibrating screen powder and the collection storage process for belonging to powder carry out under the sealed pathway with atmospheric isolation;
The oscillating sieving machine structure includes:Section is in infundibulate seal casinghousing 4, and the outside of infundibulate seal casinghousing 4 is installed Promising its provides the vibrating motor 22 of vibration source, and there is an end cover 10 in 4 upper end of infundibulate seal casinghousing;Feeding mechanism sealing rank It is connected on the end cover 10;The outer rim of the infundibulate seal casinghousing 4 is supported on powder collecting mechanism indirectly by spring 5 On;
The feeding mechanism follows oscillating sieving machine structure synchronous vibration, metal powder to complete sieve under vibration and sealed pathway Choosing and storage.
It further include an oscillation intensity sensor 20 on the infundibulate seal casinghousing 4;
Shake sieve 7 and sieve 19 are provided in the entrance of the infundibulate seal casinghousing 4 from top to bottom;The sieve 19 passes through Supporting block 6 is distributed around it to be placed on the inner edge of infundibulate seal casinghousing 4;
It is additionally provided in infundibulate seal casinghousing 4:For detect oxygen concentration under hermetic seal environment and vacuum degree and The oxygen concentration detector 21 of pressure index, the ionic air knife 24 for blowing out ion wind to the metal powder from feeding mechanism.
The feeding mechanism includes:
Loading hopper 15 for storing metal powder;
Funnel sealing cover 14 for sealing loading hopper 15;
Inlet valve 13 for leaking powder;
Charging motor 11 for controlling 13 aperture of inlet valve;Charging motor 11 passes through synchronous belt 12 and 13 phase of inlet valve Even, the control of powder supply amount is realized by controlling the aperture of inlet valve 13;
The sealing loading hopper 15 is connected with funnel sealing cover 14 by thread seal;
The meal outlet of the sealing loading hopper 15 connects the interface 18 on end cover 10 by pipeline 16;The sealing Air inlet 23 and gas outlet 17 are further opened on end cap 10;
The air inlet 23 connects protective gas feedway by conduit, and gas outlet 17 connects vacuum means by conduit It sets;
The protective gas feedway and vacuum extractor are controlled by control module.
The connection of the infundibulate seal casinghousing 4 and its end cover 10 is flexibly connected by hold assembly 9.
The powder collecting mechanism includes one also serving as the babinet 2 of support, the rewinding bottle 1 being placed in babinet 2;The infundibulate The outlet of seal casinghousing 4 is tightly connected rewinding bottle 1 by hose 3;Rewinding bottle 1 is used to back through the metal powder of the screening of sieve 19 End.
The charging motor 11, vibrating motor 22 are connect with control module respectively, for control metal powder supply amount with And the vibration frequency of infundibulate seal casinghousing 4.
The operation method of the utility model air-tightness powder sieving system, includes the following steps:
Step 1:Metal powder to be screened is put into loading hopper 15, funnel sealing cover 14 is covered tightly;
Step 2:Control module controls vacuum extractor and extracts air in air-tightness powder sieving system out from gas outlet 17, When detecting that vacuum degree reaches preset value in air-tightness powder sieving system by oxygen concentration detector 21, stop pumping;
Step 3:Control module controls protective gas feedway and is sent into the protective gas (inertia such as argon gas from air inlet 23 Gas), when oxygen concentration detector 21 detects that pressure reaches preset value, control module controls protective gas feedway and stops fortune Row;
Step 4:Control module, which starts charging motor 11, makes its work, to carry out initial feeding;
Step 5:Control module Vibration on Start-up motor 22 makes its work;
Step 6:The vibration signal of oscillating sieving machine structure is converted into electric signal and passes to control by oscillation intensity sensor 20 Molding block;
Step 7:The data that control module is fed back according to oscillation intensity sensor 20 are adjusted by controlling charging motor 11 The aperture of inlet valve 13 and the vibration frequency of vibrating motor 22;
Step 8:For metal powder during sieving 7 and sieve 19 through cross to shake, ionic air knife blows out 2s ions every 10s Wind after the static elimination for realizing metal powder, is completed to sieve and fall in rewinding bottle 1 by hose 3;
Step 9:Control module by vacuum extractor, by the pressure in air-tightness powder sieving system gradually adjust to Atmospheric pressure;
Step 10:It takes rewinding bottle 1 away, completes the screening of metal powder.
The utility model compared with the existing technology, has the following advantages and effect:
Connection between feeding mechanism described in the utility model, oscillating sieving machine structure and powder collecting mechanism is hermetic seal Connection makes charging, vibrating screen powder and the collection storage process of metal powder be carried out under the sealed pathway with atmospheric isolation;It The splashing particulate pollutant in metal powder and hardened agglomerates can be effectively filtered out, ensure the quality of printing part.
Entire screening process is carried out under sealed pathway, and the function isolated from the outside world by powder environment is sieved, energy are realized It enough prevents metal powder from being polluted by the impurity in air, influences the quality of product.
Control module can realize feedback regulation according to the feedback information of system when sieve powder, greatly increase when sieving powder System stability improves sieve powder efficiency, lowers energy loss;In addition to this, the utility model is also by passing through ionic air knife The elimination to the electrostatic of metal powder after screening is realized, product quality is further increased.
It is additionally provided with oxygen concentration detector in infundibulate seal casinghousing, working environment can be measured in real time when system works Oxygen content and vacuum degree greatly ensure that stability of the metal powder in screening process;
It is furnished with air inlet and gas outlet on end cover, the gas in system can be taken away, formed before system work Vacuum environment, then the multiple protective to metal powder is realized by the protective gas of air inlet importing argon gas etc..
The utility model considerably increases stability when metal powder screening, greatly improves the speed of sieve powder, effectively It prevents powder contaminated, while extending the service life of the components such as sieve.
Description of the drawings
Fig. 1 is the air-tightness powder sieving system cross-sectional view that the utility model is applied to metal 3D printer.
Fig. 2 is sealing end-cover structure schematic diagram.
Fig. 3 is the utility model complete machine stereoscopic schematic diagram.
Specific implementation mode
The utility model is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figs. 1-3.The utility model discloses a kind of air-tightness powder sieving systems applied to metal 3D printer It unites, including feeding mechanism, oscillating sieving machine structure, powder collecting mechanism and the control module 8 set gradually from top to bottom;Charging Mechanism is used to metal powder being conveyed to oscillating sieving machine structure;Oscillating sieving machine structure is used to carry out vibration screening to metal powder; Powder collecting mechanism to the metal powder of vibration screening for being collected storage;
Connection between the feeding mechanism, oscillating sieving machine structure and powder collecting mechanism connects for hermetic seal, makes gold Charging, vibrating screen powder and the collection storage process for belonging to powder carry out under the sealed pathway with atmospheric isolation;
The oscillating sieving machine structure includes:Section is in infundibulate seal casinghousing 4, and the outside of infundibulate seal casinghousing 4 is installed Promising its provides the vibrating motor 22 of vibration source, and there is an end cover 10 in 4 upper end of infundibulate seal casinghousing;Feeding mechanism sealing rank It is connected on the end cover 10;The outer rim of the infundibulate seal casinghousing 4 is supported on powder collecting mechanism indirectly by spring 5 On;
The feeding mechanism follows oscillating sieving machine structure synchronous vibration, metal powder to complete sieve under vibration and sealed pathway Choosing and storage.
It further include an oscillation intensity sensor 20 on the infundibulate seal casinghousing 4;
Shake sieve 7 and sieve 19 are provided in the entrance of the infundibulate seal casinghousing 4 from top to bottom;The sieve 19 passes through Supporting block 6 is distributed around it to be placed on the inner edge of infundibulate seal casinghousing 4;
It is additionally provided in infundibulate seal casinghousing 4:For detect oxygen concentration under hermetic seal environment and vacuum degree and The oxygen concentration detector 21 of pressure index, the ionic air knife 24 for blowing out ion wind to the metal powder from feeding mechanism.
The feeding mechanism includes:
Loading hopper 15 for storing metal powder;
Funnel sealing cover 14 for sealing loading hopper 15;
Inlet valve 13 for leaking powder;
Charging motor 11 for controlling 13 aperture of inlet valve;Charging motor 11 passes through synchronous belt 12 and 13 phase of inlet valve Even, the control of powder supply amount is realized by controlling the aperture of inlet valve 13;
The sealing loading hopper 15 is connected with funnel sealing cover 14 by thread seal;
The meal outlet of the sealing loading hopper 15 connects the interface 18 on end cover 10 by pipeline 16;The sealing Air inlet 23 and gas outlet 17 are further opened on end cap 10;
The air inlet 23 connects protective gas feedway by conduit, and gas outlet 17 connects vacuum means by conduit It sets;
The protective gas feedway and vacuum extractor are controlled by control module.
The connection of the infundibulate seal casinghousing 4 and its end cover 10 is flexibly connected by hold assembly 9.
The powder collecting mechanism includes one also serving as the babinet 2 of support, the rewinding bottle 1 being placed in babinet 2;The infundibulate The outlet of seal casinghousing 4 is tightly connected rewinding bottle 1 by hose 3;Rewinding bottle 1 is used to back through the metal powder of the screening of sieve 19 End.
The charging motor 11, vibrating motor 22 are connect with control module respectively, for control metal powder supply amount with And the vibration frequency of infundibulate seal casinghousing 4.
The utility model can adjust charging motor in real time according to the oscillation intensity feedback information of sieve powder system operating room Working condition, so as to adjust the charging rate of inlet valve.The vibrating motor exciting force for avoiding to occur when work in this way is insufficient The problem of, while also achieving a large amount of metal powders and disposably sieving, the repetition of same operation is avoided, sieve powder is cost saved Time improves stability when sieve powder, and improves the quality of product.
The connection of the end cover and infundibulate seal casinghousing uses fixture and is clamped sealing, and this structure has Advantage easy to disassemble reduces the complexity of operation convenient for being purged to the salvage stores in the sieve that shakes;Shell and babinet it Between connected by spring, can not only reduce the Oscillation Amplitude of integrated model, while also mitigating the noise sent out when equipment operation, The stability of equipment can be greatly improved.
Ionic air knife can blow out ion wind in real time, eliminate the electrostatic between metal powder, eliminate metal at work Suction-operated between powder so that greatly reduced the time required to sieve powder, while reducing energy loss, improve energy utilization Rate saves cost.
The important technology of oxygen concentration detector, oxygen concentration that can in real time in reading system, vacuum degree and pressure etc. refers to Mark, this not only plays a protective role to equipment, also realizes and is effectively protected to the powder of screening, in addition ionic air knife is auxiliary It helps, realizes multiple protective.
The utility model overall structure junction has to be sealed using silica gel pad, is realized the leakproofness to gas, is led The pollution of metal powder can greatly be slowed down by entering protective gas, improve product quality.
Control module is connected with charging motor with vibrating motor by conducting wire, can be according to the feedback information of system when sieve powder It realizes the feedback regulation to system, greatly increases system stability when sieve powder, improve sieve powder efficiency, lower energy damage Consumption.
The operation method of the utility model air-tightness powder sieving system, can be achieved by the steps of:
Step 1:Metal powder to be screened is put into loading hopper 15, funnel sealing cover 14 is covered tightly;
Step 2:Control module controls vacuum extractor and extracts air in air-tightness powder sieving system out from gas outlet 17, When detecting that vacuum degree reaches preset value in air-tightness powder sieving system by oxygen concentration detector 21, stop pumping;
Step 3:Control module controls protective gas feedway and is sent into the protective gas (inertia such as argon gas from air inlet 23 Gas), when oxygen concentration detector 21 detects that pressure reaches preset value, control module controls protective gas feedway and stops fortune Row;
Step 4:Control module, which starts charging motor 11, makes its work, to carry out initial feeding;
Step 5:Control module Vibration on Start-up motor 22 makes its work;
Step 6:The vibration signal of oscillating sieving machine structure is converted into electric signal and passes to control by oscillation intensity sensor 20 Molding block;
Step 7:The data that control module is fed back according to oscillation intensity sensor 20 are adjusted by controlling charging motor 11 The aperture of inlet valve 13 and the vibration frequency of vibrating motor 22;
Step 8:For metal powder during sieving 7 and sieve 19 through cross to shake, ionic air knife blows out 2s ions every 10s Wind after the static elimination for realizing metal powder, is completed to sieve and fall in rewinding bottle 1 by hose 3;
Step 9:Control module by vacuum extractor, by the pressure in air-tightness powder sieving system gradually adjust to Atmospheric pressure;
Step 10:It takes rewinding bottle 1 away, completes the screening of metal powder.
As described above, the utility model can be realized preferably.
The embodiment of the utility model is simultaneously not restricted to the described embodiments, other are any without departing from the utility model Changes, modifications, substitutions, combinations, simplifications made by under Spirit Essence and principle, should be equivalent substitute mode, are included in Within the scope of protection of the utility model.

Claims (6)

1. a kind of air-tightness powder sieving system applied to metal 3D printer, it is characterised in that:Including from top to bottom successively Feeding mechanism, oscillating sieving machine structure, powder collecting mechanism and the control module of setting;Feeding mechanism is used for metal powder is defeated Give oscillating sieving machine structure;Oscillating sieving machine structure is used to carry out vibration screening to metal powder;Powder collecting mechanism is used for shaking The metal powder of dynamic screening is collected storage;
Connection between the feeding mechanism, oscillating sieving machine structure and powder collecting mechanism connects for hermetic seal, makes metal powder Charging, vibrating screen powder and the collection storage process at end carry out under the sealed pathway with atmospheric isolation;
The oscillating sieving machine structure includes:Section is in infundibulate seal casinghousing (4), and the outside of infundibulate seal casinghousing (4) is installed Promising its provides the vibrating motor (22) of vibration source, and there is an end cover (10) in infundibulate seal casinghousing (4) upper end;Feeding mechanism Sealing is engaged on the end cover (10);The outer rim of the infundibulate seal casinghousing (4) is supported on powder indirectly by spring (5) On last collecting mechanism;
The feeding mechanism follows oscillating sieving machine structure synchronous vibration, metal powder completed under vibration and sealed pathway screening with Storage.
2. being applied to the air-tightness powder sieving system of metal 3D printer according to claim 1, it is characterised in that:It is described It further include an oscillation intensity sensor (20) on infundibulate seal casinghousing (4);
Shake sieve (7) and sieve (19) are provided in the entrance of the infundibulate seal casinghousing (4) from top to bottom;The sieve (19) It is placed on the inner edge of infundibulate seal casinghousing (4) by being distributed supporting block (6) around it;
It is additionally provided in infundibulate seal casinghousing (4):For detecting oxygen concentration under hermetic seal environment and vacuum degree and pressure The oxygen concentration detector (21) of strong index, the ionic air knife for blowing out ion wind to the metal powder from feeding mechanism (24)。
3. being applied to the air-tightness powder sieving system of metal 3D printer according to claim 2, which is characterized in that described Feeding mechanism includes:
Loading hopper (15) for storing metal powder;
Funnel sealing cover (14) for sealing loading hopper (15);
Inlet valve (13) for leaking powder;
Charging motor (11) for controlling inlet valve (13) aperture;Charging motor (11) passes through synchronous belt 12 and inlet valve (13) It is connected, the aperture by controlling inlet valve (13) realizes the control of powder supply amount;
The sealing loading hopper (15) is connected with funnel sealing cover (14) by thread seal;
The meal outlet of the sealing loading hopper (15) connects the interface (18) on end cover (10) by pipeline 16;It is described close It is further opened with air inlet (23) and gas outlet (17) on sealing end lid (10);
The air inlet (23) connects protective gas feedway by conduit, and gas outlet (17) connect vacuum means by conduit It sets;
The protective gas feedway and vacuum extractor are controlled by control module.
4. being applied to the air-tightness powder sieving system of metal 3D printer according to claim 3, which is characterized in that described The connection of infundibulate seal casinghousing (4) and its end cover (10) is flexibly connected by hold assembly 9.
5. being applied to the air-tightness powder sieving system of metal 3D printer according to claim 4, which is characterized in that described Powder collecting mechanism includes one also serving as the babinet (2) of support, the rewinding bottle (1) being placed in babinet (2);The infundibulate capsul The outlet of body (4) is tightly connected rewinding bottle (1) by hose (3);Rewinding bottle (1) is used to back through the metal of sieve (19) screening Powder.
6. being applied to the air-tightness powder sieving system of metal 3D printer according to claim 5, which is characterized in that described Charging motor (11), vibrating motor (22) are connect with control module respectively, for controlling metal powder supply amount and infundibulate The vibration frequency of seal casinghousing (4).
CN201820107532.9U 2018-01-22 2018-01-22 A kind of air-tightness powder sieving system applied to metal 3D printer Active CN207823966U (en)

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CN201820107532.9U CN207823966U (en) 2018-01-22 2018-01-22 A kind of air-tightness powder sieving system applied to metal 3D printer

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Application Number Priority Date Filing Date Title
CN201820107532.9U CN207823966U (en) 2018-01-22 2018-01-22 A kind of air-tightness powder sieving system applied to metal 3D printer

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108213431A (en) * 2018-01-22 2018-06-29 华南理工大学 A kind of air-tightness powder sieving System and method for applied to metal 3D printer
CN112138989A (en) * 2020-07-22 2020-12-29 西安交通大学 Active metal powder transports oxygen screen separation screening system
CN112495775A (en) * 2020-11-24 2021-03-16 尹石磊 Vibrating powder screening device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108213431A (en) * 2018-01-22 2018-06-29 华南理工大学 A kind of air-tightness powder sieving System and method for applied to metal 3D printer
CN108213431B (en) * 2018-01-22 2023-08-22 华南理工大学 Air-tightness powder screening system and method applied to metal 3D printer
CN112138989A (en) * 2020-07-22 2020-12-29 西安交通大学 Active metal powder transports oxygen screen separation screening system
CN112495775A (en) * 2020-11-24 2021-03-16 尹石磊 Vibrating powder screening device
CN112495775B (en) * 2020-11-24 2022-02-15 云耀深维(江苏)科技有限公司 Vibrating powder screening device

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Assignee: SHAOGUAN HUAYAN MACHINERY Co.,Ltd.

Assignor: SOUTH CHINA University OF TECHNOLOGY

Contract record no.: X2023980053316

Denomination of utility model: An airtight powder screening system applied to metal 3D printers

Granted publication date: 20180907

License type: Common License

Record date: 20231221