CN205673595U - A kind of can high efficiency reduce oxygen content 3D printing device shaped cavity - Google Patents

A kind of can high efficiency reduce oxygen content 3D printing device shaped cavity Download PDF

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Publication number
CN205673595U
CN205673595U CN201620636659.0U CN201620636659U CN205673595U CN 205673595 U CN205673595 U CN 205673595U CN 201620636659 U CN201620636659 U CN 201620636659U CN 205673595 U CN205673595 U CN 205673595U
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CN
China
Prior art keywords
working chamber
printing
oxygen content
shaped cavity
pump
Prior art date
Application number
CN201620636659.0U
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Chinese (zh)
Inventor
李玲
李小雷
李锋
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成都雍熙聚材科技有限公司
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Priority to CN201620636659.0U priority Critical patent/CN205673595U/en
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Publication of CN205673595U publication Critical patent/CN205673595U/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The utility model discloses a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, including working chamber, formation cylinder and circulative convection system, it is provided with moving component in described formation cylinder, described moving component end is shaped region, described working chamber is provided with the optical system being oppositely arranged with shaped region, described working chamber and formation cylinder are all connected to pump-line and circulative convection pipeline, the pump-line of described working chamber and formation cylinder is connected with vacuum pump after being interconnected, the circulative convection pipeline of described working chamber and formation cylinder is connected with circulative convection system respectively, described working chamber and formation cylinder are all connected to inert gas feeding duct, deoxygenation discharge duct it is connected in described working chamber.This utility model oxygen removal efficiency is high, improves the production efficiency that 3D prints;Save a large amount of noble gas, reduce the production cost that 3D prints.

Description

A kind of can high efficiency reduce oxygen content 3D printing device shaped cavity

Technical field

This utility model relates to 3D printing device field, specifically refer to a kind of can high efficiency reduce oxygen content 3D print set Standby shaped cavity.

Background technology

Selective laser melting (Selective Laser Melting, SLM) is that a kind of 3D of metalwork straight forming beats Print technology, is the later development of rapid shaping technique.This technology most basic thought based on rapid shaping, the most successively cladding " increment " manufacture, there is the part of geometry in particular according to three-dimensional CAD model direct forming, in forming process gold Belong to powder be completely melt, produce metallurgical binding, this technology be particularly well-suited to tradition machining means cannot manufacture complicated shape/ The metal parts of structure.SLM technology has the advantage that 1, can directly manufacture terminal metal part product;2, can be had Nonequilibrium state supersaturated solid solution and the entity of uniform tiny metallographic structure, consistency almost can reach 100%, part machinery Can be suitable with Forging Technology gained;3, use has the laser instrument of high power density, with the laser beam processing metal that hot spot is the least, Make the metal parts processed have the highest dimensional accuracy (reaching 0.1mm) and good surface roughness (Ra 20~ 40μm);4, the least due to laser spot diameter, therefore the laser energy density of metal bath is the highest so that with single component Metal dust manufactures part and is possibly realized, and alternative metal dust kind is expanded the most significantly;5, applicable various multiple The workpiece of miscellaneous shape, is especially suitable for inside and has complicated abnormal shape structure (such as cavity, three-dimensional grid), cannot manufacture by traditional method Complex part.

But the protective atmosphere in 3D printing device working chamber is required higher by SLM technology, open laser instrument fusing metal powder Before end, typically require that the oxygen content in working chamber need to drop to100ppm(0.01%)Below.The techniques below means that use more: Constantly noble gas (nitrogen, argon) is injected in 3D printing device shaped cavity, and force to carry out convection circulation, meanwhile, be Mixed gas in working chamber is discharged by system automatically, and the oxygen content like this shaping room air is constantly diluted and drops Low.When applying this deoxidation method, generally reach to shape required low oxygen content standard atmosphere and need to constantly be filled with noble gas Up to several hours, not only oxygen removal efficiency was low, but also needed to waste substantial amounts of noble gas, and production economy is poor, increased The use cost of 3D printing device.

Utility model content

The purpose of this utility model is: overcome prior art drawbacks described above, it is provided that one high efficiency can reduce oxygen content 3D printing device shaped cavity.This utility model oxygen removal efficiency is high, improves the production efficiency that 3D prints;Save the most lazy Property gas, reduce 3D print production cost.

This utility model is achieved through the following technical solutions:

A kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, right including working chamber, formation cylinder and circulation Streaming system, is provided with moving component in described formation cylinder, described moving component end is shaped region, described working chamber be provided with The optical system that shaped region is oppositely arranged, described working chamber and formation cylinder are all connected to pump-line and circulative convection pipeline, institute State after the pump-line of working chamber and formation cylinder is interconnected and be connected with vacuum pump, described working chamber and the circulative convection of formation cylinder Pipeline is connected with circulative convection system respectively, and described working chamber and formation cylinder are all connected to inert gas feeding duct, described shaping Deoxygenation discharge duct it is connected on room.

As the preferred mode of one, described inert gas feeding duct, deoxygenation discharge duct and pump-line all connect There is check valve.

As the preferred mode of one, described deoxygenation discharge duct and pump-line are all connected to discharge filter.

As the preferred mode of one, in described circulative convection system, it is provided with filtration equipment for clarifying.

As the preferred mode of one, described working chamber is connected to oxygen level sensor.

As the preferred mode of one, described working chamber is connected to pressure transducer.

As the preferred mode of one, described working chamber is connected to relief valve.

This utility model compared with prior art, has the following advantages and beneficial effect: this utility model oxygen removal efficiency is high, Improve the production efficiency that 3D prints;Save a large amount of noble gas, reduce the production cost that 3D prints.

Accompanying drawing explanation

Fig. 1 is embodiment 1 structural representation.

Wherein: 1 circulative convection system, 2 circulative convection pipelines, 3 oxygen level sensors, 4 deoxygenation discharge ducts, 5 check valves, 6 discharge filters, 7 optical systems, 8 inert gas feeding duct, 9 pressure transducers, 10 peaces Full valve, 11 working chambers, 12 shaped regions, 13 pump-lines, 14 vacuum pumps, 16 moving components, 17 formation cylinders.

Detailed description of the invention

Describe in detail the most further, but embodiment of the present utility model be not limited to this:

Embodiment 1:

See Fig. 1, a kind of high efficiency can reduce the 3D printing device shaped cavity of oxygen content, including working chamber 11, shape Cylinder 17 and circulative convection system 1, be provided with moving component 16 in described formation cylinder 17, described moving component 16 end is shaped region 12, described working chamber 11 is provided with the optical system 7 being oppositely arranged with shaped region 12, and described working chamber 11 and formation cylinder 17 are equal Be connected to pump-line 13 and circulative convection pipeline 2, the pump-line 13 of described working chamber 11 and formation cylinder 17 be interconnected after with Vacuum pump 14 connects, and the circulative convection pipeline 2 of described working chamber 11 and formation cylinder 17 is connected with circulative convection system 1 respectively, institute State working chamber 11 and formation cylinder 17 is all connected to inert gas feeding duct 8, described working chamber 11 is connected to deoxygenation discharge duct 4.

Deoxygenation of the present utility model operation is divided into two steps: first, arranges one very outside air-tightness shaped cavity Empty pump 14, air-tightness shaped cavity includes working chamber 11 and formation cylinder 17, before laser forming starts, first opens vacuum pump 14, Pressure in air-tightness shaped cavity is down to below 20000Pa, now closes vacuum pump 14;Then, when air-tightness forming cavity After internal pressure is down to below 20000Pa, start, by noble gas, such as nitrogen, argon etc., to pass through inert gas feeding duct 8 inject 3D printing devices air-tightness shaped cavities in, force carry out convection circulation and with air-tightness shaped cavity residual air Mixing, along with being filled with of noble gas, meanwhile, the mixed gas in shaped cavity is discharged by deoxygenation discharge duct 4, by The continuous discharge of mixed gas in air-tightness shaped cavity, the remnant oxygen composition in air-tightness shaped cavity is able to the most therewith Reduce.By the process of two above step, the oxygen content of air-tightness shaped cavity internal gas just can reduce expeditiously. Compared with prior art, this utility model oxygen removal efficiency is high, improves the production efficiency that 3D prints;Save a large amount of indifferent gas Body, reduces the production cost that 3D prints

As the preferred mode of one, on described inert gas feeding duct 8, deoxygenation discharge duct 4 and pump-line 13 All it is connected to check valve 5.By being all connected to check valve 5 on inert gas feeding duct 8, deoxygenation discharge duct 4 and pump-line 13, Check valve 5 can only one-way conduction, it is ensured that the air-tightness of air-tightness shaped cavity.

As the preferred mode of one, described deoxygenation discharge duct 4 and pump-line 13 are all connected to discharge filter 6. Owing to gas may be mixed with metal particulate, by being all connected to discharge filter on deoxygenation discharge duct 4 and pump-line 13 6, it is possible to remove the metal particulate in gas, it is to avoid cause atmospheric pollution.

As the preferred mode of one, in described circulative convection system 1, it is provided with filtration equipment for clarifying.Due to possible in gas It is mixed with metal particulate, by being provided with filtration equipment for clarifying in circulative convection system 1, can effectively remove and gas may be mixed with Metal particulate.

As the preferred mode of one, described working chamber 11 is connected to oxygen level sensor 3.By being connected in working chamber 11 Oxygen level sensor 3, it is simple to the oxygen content index of gas in the working chamber 11 of monitoring at any time.

As the preferred mode of one, described working chamber 11 is connected to pressure transducer 9.By being connected to pressure in working chamber 11 Force transducer 9, it is simple to the pressure index of gas in the working chamber 11 of monitoring at any time.

As the preferred mode of one, described working chamber 11 is connected to relief valve 10.By being connected to safety in working chamber 11 Valve 10, when in working chamber 11, gas pressure is too high, now relief valve 10 is opened, and carries out release aerofluxus.

The above, be only preferred embodiment of the present utility model, and this utility model not does any pro forma limit System, every according to technical spirit of the present utility model, above example is made any simple modification, equivalent variations, each fall within Protection domain of the present utility model.

Claims (7)

1. one kind can high efficiency reduce oxygen content 3D printing device shaped cavity, it is characterised in that: include working chamber (11), become Shape cylinder (17) and circulative convection system (1), be provided with moving component (16), described moving component (16) end in described formation cylinder (17) End is shaped region (12), and described working chamber (11) are provided with the optical system (7) being oppositely arranged with shaped region (12), described Working chamber (11) and formation cylinder (17) are all connected to pump-line (13) and circulative convection pipeline (2), described working chamber (11) with become The pump-line (13) of shape cylinder (17) is connected with vacuum pump (14) after being interconnected, described working chamber (11) and formation cylinder (17) Circulative convection pipeline (2) is connected with circulative convection system (1) respectively, and described working chamber (11) and formation cylinder (17) are all connected to inertia Gas feeding duct (8), described working chamber (11) are connected to deoxygenation discharge duct (4).
The most according to claim 1 a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, its feature exists In: all it is connected to check valve (5) on described inert gas feeding duct (8), deoxygenation discharge duct (4) and pump-line (13).
The most according to claim 1 a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, its feature exists In: all it is connected to discharge filter (6) on described deoxygenation discharge duct (4) and pump-line (13).
The most according to claim 1 a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, its feature exists In: it is provided with filtration equipment for clarifying in described circulative convection system (1).
The most according to claim 1 a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, its feature exists In: it is connected to oxygen level sensor (3) on described working chamber (11).
The most according to claim 1 a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, its feature exists In: it is connected to pressure transducer (9) on described working chamber (11).
The most according to claim 1 a kind of can high efficiency reduce oxygen content 3D printing device shaped cavity, its feature exists In: it is connected to relief valve (10) on described working chamber (11).
CN201620636659.0U 2016-06-25 2016-06-25 A kind of can high efficiency reduce oxygen content 3D printing device shaped cavity CN205673595U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106738911A (en) * 2017-01-20 2017-05-31 深圳市贝优通新能源技术开发有限公司 A kind of 3D printer with anaerobic printing environment
CN106799493A (en) * 2016-12-21 2017-06-06 华中科技大学 A kind of powder preheating device and its application for selective laser fusing powder feeding
CN107145042A (en) * 2017-07-07 2017-09-08 深圳市容大感光科技股份有限公司 Prevent oxygen inhibition method and apparatus and the application in exposure machine or printer
CN108213433A (en) * 2018-01-25 2018-06-29 安徽科元三维技术有限公司 SLM print control systems
CN108746605A (en) * 2018-06-20 2018-11-06 西安琦丰光电科技有限公司 A kind of deoxygenation forming cavity and deaerating plant and method for molybdenum silicon boron material increasing material manufacturing
CN109107291A (en) * 2017-06-23 2019-01-01 上海凯森环保科技有限公司 A kind of metal 3D printing fume purifier
CN109807328A (en) * 2017-11-20 2019-05-28 大族激光科技产业集团股份有限公司 Selective laser melting system, gas-recycling plant and Method of printing

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106799493B (en) * 2016-12-21 2019-01-29 华中科技大学 A kind of powder preheating device and its application for selective laser fusing powder feeding
CN106799493A (en) * 2016-12-21 2017-06-06 华中科技大学 A kind of powder preheating device and its application for selective laser fusing powder feeding
CN106738911A (en) * 2017-01-20 2017-05-31 深圳市贝优通新能源技术开发有限公司 A kind of 3D printer with anaerobic printing environment
CN109107291A (en) * 2017-06-23 2019-01-01 上海凯森环保科技有限公司 A kind of metal 3D printing fume purifier
CN107145042A (en) * 2017-07-07 2017-09-08 深圳市容大感光科技股份有限公司 Prevent oxygen inhibition method and apparatus and the application in exposure machine or printer
CN109807328A (en) * 2017-11-20 2019-05-28 大族激光科技产业集团股份有限公司 Selective laser melting system, gas-recycling plant and Method of printing
CN108213433A (en) * 2018-01-25 2018-06-29 安徽科元三维技术有限公司 SLM print control systems
CN108746605A (en) * 2018-06-20 2018-11-06 西安琦丰光电科技有限公司 A kind of deoxygenation forming cavity and deaerating plant and method for molybdenum silicon boron material increasing material manufacturing

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