CN106583721A - Material increasing manufacturing system capable of stably controlling atmosphere of forming cavity for long time - Google Patents

Material increasing manufacturing system capable of stably controlling atmosphere of forming cavity for long time Download PDF

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Publication number
CN106583721A
CN106583721A CN201611107940.6A CN201611107940A CN106583721A CN 106583721 A CN106583721 A CN 106583721A CN 201611107940 A CN201611107940 A CN 201611107940A CN 106583721 A CN106583721 A CN 106583721A
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China
Prior art keywords
forming cavity
forming
transfer chamber
control
molding
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Pending
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CN201611107940.6A
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Chinese (zh)
Inventor
曹毅
李玉哲
李涤尘
王成
张旺
杨东
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Xian Jiaotong University
Shaanxi Hengtong Intelligent Machine Co Ltd
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Xian Jiaotong University
Shaanxi Hengtong Intelligent Machine Co Ltd
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Application filed by Xian Jiaotong University, Shaanxi Hengtong Intelligent Machine Co Ltd filed Critical Xian Jiaotong University
Priority to CN201611107940.6A priority Critical patent/CN106583721A/en
Publication of CN106583721A publication Critical patent/CN106583721A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/70—Recycling
    • B22F10/77—Recycling of gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/70—Gas flow means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/90—Means for process control, e.g. cameras or sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A material increasing manufacturing system capable of stably controlling the atmosphere of a forming cavity for a long time comprises the forming cavity, wherein the forming cavity is connected with a gas replacement system and a smoke dust purifying system; signal outputs of a water content detector and an oxygen content detector which are mounted in the forming cavity are connected with a signal input of a control system; a control output of the control system is respectively connected with control inputs of the smoke dust purifying system, the gas replacement system and the forming cavity; the side wall of the forming cavity is connected with more than one transition cabin; an outer door and an inner door are mounted on each transition cabin; each transition cabin communicates with the forming cavity through a balance tube; a solenoid valve is mounted on each balance tube; the outside of each transition cabin is connected with a vacuum system controlled independently; a triangular groove is formed in a surface, which is in contact with the wall of a forming cylinder, of the bottom plate connected with a piston rod of the forming cylinder; and an elastic sealing ring with a triangular cross section is arranged in the triangular groove. By the transition cabins, protective gas can be reused, forming preparation time is shortened, and the manufacturing efficiency is improved; and by the elastic sealing ring with the triangular cross section, the airtightness is improved, amplitude of fluctuation of water content and oxygen content is reduced, and the forming quality is improved.

Description

A kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term
Technical field：
The invention belongs to increases material manufacturing technology field, more particularly to a kind of increasing material that can control forming cavity atmosphere steadily in the long term Manufacture system.
Background technology：
Metal 3D printing moulding process need to be passed through the oxidation that the noble gases such as argon, nitrogen reduce fusion of metal powder process Phenomenon, but, the forming cavity atmosphere control system generally existing problems with of existing most of 3D printing equipment：1. part into Type is finished, and opens forming cavity door pickup, and its protective atmosphere is destroyed, not reproducible utilization, therefore molding all needs displacement every time Gas and time swap is longer, increased the molding time of part, reduces production efficiency；2. base plate and cylinder body it Between form dynamic sealing, traditional sealing structure is not easy to ensure its sealing in use for some time；3. the gas in forming cavity Atmosphere is affected by movement of cylinder block, material gasification in forming process, causes the fluctuating margin of oxygen content in forming cavity atmosphere larger, The process that especially long-time part is printed, is easy to produce making defect；Additionally, fusion of metal powder is produced in forming process Flue dust be easily caused Forming Quality decline, needs effectively purified.
The content of the invention：
In order to overcome the shortcoming of above-mentioned prior art, object of the present invention is to provide one kind can be controlled into steadily in the long term The increasing material manufacturing system of die cavity atmosphere, it is repeatable to utilize protective gas, molding time is reduced, make efficiency is improved；Simultaneously The reliability of sealing is improve, is reduced the fluctuating margin of water oxygen content, is improve Forming Quality.
In order to achieve the above object, the technical scheme that the present invention takes is as follows：
A kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term, including forming cavity 10, forming cavity 10 are gentle Body exchange system 1, clarifying smoke system 14 connect；The water content detector 8 installed in forming cavity 10, oxygen content detector 9 The signal input connection of signal output and control system 20, the controlled output of control system 20 respectively with clarifying smoke system 14, Gas ventilator 1, the connection of 10 control input of forming cavity；10 side wall of forming cavity and more than one transfer chamber 4 connect, transfer chamber 4 be provided with external door can with pick and place workpiece or part, transfer chamber 4 is provided with inside door 17 and can be connected with forming cavity 10, inside door 17 Compressed by cylinder 18, transfer chamber 4 is connected with forming cavity 10 by balance pipe 6, control connection is installed on balance pipe 6 Electromagnetic valve 7, the vacuum system 5 of 4 external independent control of transfer chamber.
Described forming cavity 10 is connected with moulding cylinder 15 by workbench 19, the base plate of the connection of piston rod 22 of moulding cylinder 15 16 and 15 casing wall contact surface of moulding cylinder on be provided with triangle groove and equipped with triangle section elastic seal ring 21, triangle section elasticity is close Seal 21 forms the movable sealing structure of interference fit with 15 wall of moulding cylinder, drives 16 up and down motion process of base plate in piston rod 22 In, base plate 16 produces an outside thrust to triangle section elastic seal ring 21 all the time so as to be adjacent to casing wall.
Described 1 external inertia source of the gas of gas ventilator, it is internal blower fan to be installed and there is copper catalyst and molecule well sifted Change the decontaminating column of material, after displacement makes water oxygen content be reduced to the level of requirement, forming cavity 10 is fallen by consumption of chemical reaction Interior water, oxygen, further reduce water oxygen content, water oxygen content is reduced in the indication range of moulding material requirement.
Based on the control method of above-mentioned increasing material manufacturing system, comprise the following steps
1), when carrying out SLM molding, the CAD geometric models of forming part are imported control system 20 first, then base is installed Plate, leveling fore-put powder, close forming cavity 10；
2) when inflated to forming cavity 10 first, evacuation is carried out to forming cavity 10 first with vacuum system 5, is reached true After reciprocal of duty cycle is required, then line replacement is entered to the gas in forming cavity 10 by gas ventilator 1, make water oxygen content be reduced to molding During the water oxygen content's index of material forming requirements, start forming operation, clarifying smoke system 14 is connected in forming process, is filtered The smoke contamination thing produced in falling forming cavity；The molding for controlling to carry out automatically part by control system 20 makes；After molding terminates Profiled member is taken out by transfer chamber 4；
In forming process, triangle section elastic seal ring 21 forms the movable sealing structure of interference fit with 15 wall of moulding cylinder, Piston rod 22 drive base plate 16 move up and down during, base plate 16 all the time to triangle section elastic seal ring 21 produce one to Outer thrust so as to be adjacent to casing wall；Gas ventilator 1 is detected according to water content detector 8, oxygen content by control system 20 The numerical value of the feedback of instrument 9 carries out topping up and bleeding automatically；
3) forming parts are finished, and take out profiled member from forming cavity 10 by transfer chamber 4, when by 4 pickup of transfer chamber, are needed Evacuation is carried out to transfer chamber 4 first, then gas balance is carried out with the balance pipe 6 of transfer chamber 4 by connecting forming cavity 10, was made Cross cabin 4 identical with the atmosphere of forming cavity 10, take out part；
4), after the part of molding takes out, in the case where forming cavity 10 is not opened, if carrying out molding next time, pass through Transfer chamber 4 is put into forming cavity 10 with part shaping substrate and carries out molding；
5), after molding terminates every time, reuse in the case where 10 destructions of forming cavity wherein protective atmosphere is not opened The protective atmosphere of die cavity 10, reaches control forming cavity atmosphere steady in a long-term.
Current increasing material manufacturing system is compared, the system there are following features：
1st, by the transitional function of transfer chamber 4, can take in the case of destroying its protective atmosphere forming cavity door 10 is not opened Go out part/be put into material, can saving and protection gas consumption, reduces cost can reduce inflationtime and number of times again, shorten into Type time, improve shaping efficiency.
2nd, triangle section elastic seal ring 21 is added to form the dynamic of interference fit with 15 wall of moulding cylinder using triangle groove structure Sealing structure, in 22 upper and lower motor process of piston rod base plate 16 all the time to triangle section elastic seal ring 21 produce one to Outer thrust so as to be adjacent to casing wall, increased the reliability of dynamic sealing.
3rd, by the vacuum system 5 of independent control displacement noble gases before to 4 evacuation of forming cavity 10 and transfer chamber, Accelerate the replacing velocity of oxygen, reduce molding time, in forming process, in transfer chamber 4, be in vacuum state, negative pressure made Cross 4 inside door of cabin and be adjacent to molding cavity wall, further ensure the sealing of forming cavity 10.
4th, water oxygen is made to be reduced in the range of the water oxygen content's index of moulding material requirement by gas ventilator 1, and can Topping up and bleeding are carried out automatically according to the numerical value of oxygen analyzer feedback, the effective control of water oxygen content is realized, Reach the effect for maintaining protection atmosphere steady in a long-term.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation that molding cylinder body dynamic sealing coordinates.
Specific embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and examples.
With reference to Fig. 1, a kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term, including forming cavity 10, molding First gas outlet in chamber 10 passes through the air intake connection of the first escape pipe 2 and gas ventilator 1, and gas ventilator 1 goes out QI KOU passes through the gas returning port connection of the first muffler 3 and forming cavity 10；Second gas outlet of forming cavity 10 is provided with filter 11, Filter 11 passes through the air intake connection of the second escape pipe 13 and clarifying smoke system 14, and the gas outlet of clarifying smoke system 14 leads to The second gas returning port for crossing the second muffler 12 and forming cavity 10 is provided with filter 11 and connects；The water content installed in forming cavity 10 The signal input connection of detector 8, the signal output of oxygen content detector 9 and control system 20, the control of control system 20 are defeated Go out and connect with clarifying smoke system 14, gas ventilator 1,10 control input of forming cavity respectively；10 side wall of forming cavity and one More than transfer chamber 4 connect, transfer chamber 4 be provided with external door can with pick and place workpiece or part, transfer chamber 4 is provided with 17 energy of inside door Enough to connect with forming cavity 10, inside door 17 is compressed by cylinder 18, and transfer chamber 4 is connected with forming cavity 10 by balance pipe 6, is put down The electromagnetic valve 7 of control connection, the vacuum system 5 of 4 external independent control of transfer chamber are installed on weighing apparatus pipe 6.
See figures.1.and.2, described forming cavity 10 is connected with moulding cylinder 15 by workbench 19, the piston of moulding cylinder 15 Triangle groove is provided with the 15 casing wall contact surface of base plate 16 and moulding cylinder of the connection of bar 22 and equipped with triangle section elastic seal ring 21, Triangle section elastic seal ring 21 forms the movable sealing structure of interference fit with 15 wall of moulding cylinder, drives base plate 16 in piston rod 22 During up and down motion, base plate 16 produces an outside thrust to triangle section elastic seal ring 21 all the time so as to be adjacent to cylinder Wall, increased the reliability of dynamic sealing, reach the purpose of stability contorting forming cavity atmosphere.
Described 1 external inertia source of the gas of gas ventilator, it is internal blower fan to be installed and there is copper catalyst and molecule well sifted Change the decontaminating column of material, after displacement makes water oxygen content be reduced to certain level, molding intracavity is fallen by consumption of chemical reaction Water, oxygen, further reduce water oxygen content, water oxygen content is reduced in the indication range of moulding material requirement.
Based on the control method of above-mentioned increasing material manufacturing system, comprise the following steps：
1), when carrying out SLM molding, the CAD geometric models of forming part are carried out slice of data process first, is then introduced into Control system 20, then installation base plate, leveling fore-put powder, close forming cavity 10；
2) when inflated to forming cavity 10 first, evacuation is carried out to forming cavity 10 first with vacuum system 5, is reached true After reciprocal of duty cycle is required, then noble gases are injected by gas ventilator 1 into forming cavity 10, the gas in forming cavity 10 is carried out Displacement, after oxygen content is quickly reduced to a certain degree, further reduces water oxygen using the middle chemical reaction of gas ventilator 1 Content, when making the water oxygen content of molding intracavity 10 be reduced to the water oxygen content's index of moulding material forming requirements, starts molding behaviour Make, clarifying smoke system 14, the smoke contamination thing produced in filtering out forming cavity are connected in forming process；By control system 20 Control carries out automatically the molding of part and makes；Molding takes out profiled member by transfer chamber 4 after terminating；
In forming process, triangle section elastic seal ring 21 forms the movable sealing structure of interference fit with 15 wall of moulding cylinder, Piston rod 22 drive base plate 16 move up and down during, base plate 16 all the time to triangle section elastic seal ring 21 produce one to Outer thrust so as to be adjacent to casing wall, increased the reliability of dynamic sealing, especially during long-time molding, be conducive to into The control of atmosphere in die cavity 15；Gas ventilator 1 is by control system 20 according to water content detector 8, oxygen content detector 9 The numerical value of feedback carries out topping up and bleeding automatically, further reduces water oxygen content fluctuating margin, realizes The effective control of water oxygen content, reaches the effect for maintaining protection atmosphere steady in a long-term；
3) forming parts are finished, and take out profiled member from forming cavity 10 by transfer chamber 4 it may first have to judge transfer chamber 4 Whether gas is consistent with the gas componant of forming cavity 10；If inconsistent, need to close 4 all valves of transfer chamber, open transfer chamber 4 Vacuum system 5, using vacuum system 5 to 4 evacuation of transfer chamber, after vacuum reaches requirement, open transfer chamber 4 electromagnetism Valve 7, makes the gas ingredients of transfer chamber 4 identical with forming cavity 10, is then shut off electromagnetic valve 7；If unanimously can directly open transition The inside door 17 in cabin 4, is put into transfer chamber 4 part and closes transfer chamber inside door 17；Transition door out of my cabin is opened, part is taken out, pickup is complete Into；
4), after the part of molding takes out, once molding is carried out in the case where forming cavity 10 is not opened, by mistake Cross cabin 4 and shaping substrate and part are put into forming cavity 10, now need first to close the inside door 17 of transfer chamber 4 and electromagnetic valve 7；Open The external door of transfer chamber 4, is put into transfer chamber 4 substrate and experiment equipment, closes 4 external door of transfer chamber；Open the vacuum system of transfer chamber 4 System 5, to 4 evacuation of transfer chamber, removes the oxygen in transfer chamber 4, after vacuum up to after requiring, closes vacuum system 5；It is opened The electromagnetic valve 7 in cabin 4 is crossed, after the pressure between transfer chamber 4 and forming cavity 10 reaches balance, electromagnetic valve 7 is closed；Open transfer chamber 4 inside doors 17, take out shaping substrate and experiment equipment is put into forming cavity 10；Closing 4 inside door 17 of transfer chamber, installation base plate leveling, Powdering carries out molding；
5), after molding terminates every time, using the transitional function of transfer chamber 4, wherein protect 10 destructions of forming cavity are not opened The protective atmosphere of forming cavity 10 is reused in the case of atmosphere, control forming cavity atmosphere steady in a long-term is reached.
The present invention just preferably can be realized as mentioned above, but embodiments of the present invention are not limited by above-described embodiment System, can also use in other forming processes need the molding mode of molding control climate, therefore it is every according to the present invention shape, The change made by principle, all should cover in protection scope of the present invention.

Claims (4)

1. a kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term, including forming cavity (10), forming cavity (10) and Gas ventilator (1), clarifying smoke system (14) connection；The water content detector (8) of installation, oxygen content in forming cavity (10) The signal input connection of the signal output and control system (20) of detector (9), the controlled output of control system (20) respectively and Clarifying smoke system (14), gas ventilator (1), the connection of forming cavity (10) control input, it is characterised in that：Forming cavity (10) Side wall and more than one transfer chamber (4) connection, transfer chamber (4) be provided with external door can with pick and place workpiece or part, transfer chamber (4) inside door (17) is installed to connect with forming cavity (10), inside door (17) is compressed by cylinder (18), transfer chamber (4) Connected with forming cavity (10) by balance pipe (6), the electromagnetic valve (7) of control connection, transfer chamber (4) are installed on balance pipe (6) The vacuum system (5) of external independent control.
2. a kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term according to claim 1, its feature exist In：Described forming cavity (10) is connected with moulding cylinder (15) by workbench (19), piston rod (22) connection of moulding cylinder (15) Base plate (16) and moulding cylinder (15) casing wall contact surface on be provided with triangle groove and equipped with triangle section elastic seal ring (21), three Angular cross section elastic seal ring (21) forms the movable sealing structure of interference fit with moulding cylinder (15) wall, drives bottom in piston rod (22) During plate (16) moves up and down, base plate (16) produces an outside thrust to triangle section elastic seal ring (21) all the time, Which is made to be adjacent to casing wall.
3. a kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term according to claim 1, its feature exist In：The described external inertia source of the gas of gas ventilator (1), it is internal blower fan to be installed and there is copper catalyst and molecular sieve purification material The decontaminating column of material, after displacement makes water oxygen content be reduced to the level of requirement, is fallen in forming cavity (10) by consumption of chemical reaction Water, oxygen, further reduce water oxygen content, water oxygen content is reduced in the indication range of moulding material requirement.
4. the controlling party of a kind of increasing material manufacturing system that can control forming cavity atmosphere steadily in the long term according to claim 1 Method, it is characterised in that comprise the following steps
1) when carrying out SLM molding, the CAD geometric models of forming part are imported control system 20 first, then installation base plate, tune Flat and fore-put powder, closes forming cavity (10) door；
2), when inflated to forming cavity (10) first, evacuation is carried out to forming cavity (10) first with vacuum system (5), is reached After vacuum level requirements, then line replacement is entered to the gas in forming cavity (10) by gas ventilator (1), reduce water oxygen content To moulding material forming requirements water oxygen content's index when, start forming operation, in forming process connect clarifying smoke system (14) the smoke contamination thing produced in, filtering out forming cavity；Automatically the molding for carrying out part by control system (20) control makes； Molding takes out profiled member by transfer chamber (4) after terminating；
In forming process, triangle section elastic seal ring (21) forms the movable sealing structure of interference fit with moulding cylinder (15) wall, During piston rod (22) drives base plate (16) to move up and down, base plate (16) is produced to triangle section elastic seal ring (21) all the time A raw outside thrust so as to be adjacent to casing wall；Gas ventilator (1) is by control system (20) according to water content detector (8), the numerical value that oxygen content detector (9) feeds back carries out topping up and bleeding automatically；
3) forming parts are finished, and take out profiled member from forming cavity (10) by transfer chamber (4), when by transfer chamber (4) pickup, Need first evacuation to be carried out to transfer chamber (4), then carry out gas with the balance pipe (6) of transfer chamber 4 by connecting forming cavity (10) Balance, makes transfer chamber (4) identical with the atmosphere of forming cavity (10), takes out part；
4) after the part of molding takes out, in the case where forming cavity (10) door is not opened, if carrying out molding next time, by mistake Crossing cabin (4) shaping substrate is put into forming cavity (10) with part carries out molding；
5), after molding terminates every time, molding is reused in the case where forming cavity (10) door destruction wherein protective atmosphere is not opened The protective atmosphere in chamber (10), reaches control forming cavity atmosphere steady in a long-term.
CN201611107940.6A 2016-12-06 2016-12-06 Material increasing manufacturing system capable of stably controlling atmosphere of forming cavity for long time Pending CN106583721A (en)

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CN107695349A (en) * 2017-08-28 2018-02-16 大族激光科技产业集团股份有限公司 Inert gas homestat and balance method for 3D printing
CN108958341A (en) * 2018-09-21 2018-12-07 天津镭明激光科技有限公司 A kind of increasing material manufacturing laser formation equipment atmosphere control system and method
CN109049717A (en) * 2018-07-31 2018-12-21 西安铂力特增材技术股份有限公司 A kind of gas monitoring system and working method of 3D printing equipment
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CN109483882A (en) * 2018-11-08 2019-03-19 源秩科技（上海）有限公司 Photocuring 3D printing system and photocuring 3D printing method
CN109940881A (en) * 2019-04-12 2019-06-28 西安增材制造国家研究院有限公司 A kind of increasing material manufacturing equipment forming cylinder structure and forming method
CN110181046A (en) * 2019-04-22 2019-08-30 昆明理工大学 A kind of device eliminating laser near-net-shape technique and splashing with flue dust
CN110711859A (en) * 2018-07-11 2020-01-21 西安增材制造国家研究院有限公司 Material increasing and decreasing composite manufacturing equipment and manufacturing method
CN114101854A (en) * 2021-12-27 2022-03-01 华中科技大学 Large-scale forming cabin for electric arc additive manufacturing
CN115233210A (en) * 2022-05-16 2022-10-25 季华实验室 Laser cladding method and system and gas protection equipment

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CN108958341B (en) * 2018-09-21 2023-10-27 天津镭明激光科技有限公司 Atmosphere control system and method for additive manufacturing laser forming equipment
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Application publication date: 20170426