CN110126277A - A kind of 3D printer that can be cleared up automatically - Google Patents

A kind of 3D printer that can be cleared up automatically Download PDF

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Publication number
CN110126277A
CN110126277A CN201910481233.0A CN201910481233A CN110126277A CN 110126277 A CN110126277 A CN 110126277A CN 201910481233 A CN201910481233 A CN 201910481233A CN 110126277 A CN110126277 A CN 110126277A
Authority
CN
China
Prior art keywords
printer
connect
pipe
automatically
isocon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910481233.0A
Other languages
Chinese (zh)
Inventor
孙薇卿
张仁学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Professional College of Science and Technology
Original Assignee
Wuxi Professional College of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Professional College of Science and Technology filed Critical Wuxi Professional College of Science and Technology
Priority to CN201910481233.0A priority Critical patent/CN110126277A/en
Publication of CN110126277A publication Critical patent/CN110126277A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30Auxiliary operations or equipment
    • B29C64/35Cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30Auxiliary operations or equipment
    • B29C64/379Handling of additively manufactured objects, e.g. using robots
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y40/00Auxiliary operations or equipment, e.g. for material handling

Abstract

A kind of 3D printer that can be cleared up automatically, including 3D printer ontology, air blower, air supply tube, adapting pipe, water supplying pipe, isocon, jet pipe, connector, baffle, receiving hopper, support plate, locating shaft, supporting block, connecting rod, support rod, supporting leg, open box, bottom plate and gag lever post;The upper end of supporting leg is connect with 3D printer ontology, and the lower end of supporting leg is connect with bottom plate;Air blower is arranged on 3D printer ontology;The inside of 3D printer ontology is arranged in isocon;The water inlet end of jet pipe and the water outlet of isocon connect;The inlet end of isocon and the outlet side of adapting pipe connect;The inlet end of adapting pipe and being connected for air port for air blower;The water outlet of water supplying pipe and the water inlet of adapting pipe connect;Port is set on the shell of 3D printer ontology;Baffle plate setting is in passage port.The 3D printer that can be cleared up automatically has the effect of included cleaning and efficiently prints.

Description

A kind of 3D printer that can be cleared up automatically
Technical field
The present invention relates to fields, more particularly to a kind of 3D printer that can be cleared up automatically.
Background technique
3D printer is referred to as a kind of printer of mystery, " can not only print " building and completely build, it might even be possible to Print the shape of any desired article to astronaut in spaceship, but 3D printing come out be object model, no The function of object can be printed.
And 3D printer can generate dirt particles during use and be scattered inside it, can only by printing after the completion of It is cleared up manually, so that 3D printer not can be carried out continuous print job, and then the step of increasing manual cleaning, together When object after completing printing usually require to rest in 3D printer progress natural cooling cooling, can take out and carry out again Printing, and then influence printing effect.
To solve the above problems, proposing a kind of 3D printer that can be cleared up automatically in the application.
Summary of the invention
(1) goal of the invention
To solve technical problem present in background technique, the present invention proposes a kind of 3D printer that can be cleared up automatically, this The particle generated in printing is blown off to being collected in open box by setting air blower, carries out centralized collection storage by invention , it avoids the problem that artificially collecting, and then persistently print;By removing support plate, to the object after the completion of being printed in support plate It is taken out cooling, carry out replacement support plate and then is persistently printed.
(2) technical solution
To solve the above problems, the present invention provides the 3D printer that one kind can clear up automatically, including 3D printer ontology, Air blower, air supply tube, adapting pipe, water supplying pipe, isocon, jet pipe, connector, baffle, receiving hopper, support plate, locating shaft, support Block, connecting rod, support rod, supporting leg, open box, bottom plate and gag lever post;
The upper end of supporting leg is connect with 3D printer ontology, and the lower end of supporting leg is connect with bottom plate;Air blower is arranged in 3D In printer body;The inside of 3D printer ontology is arranged in isocon;The water inlet end of jet pipe and the water outlet of isocon connect; The inlet end of isocon and the outlet side of adapting pipe connect;The inlet end of adapting pipe and being connected for air port for air blower;Water supplying pipe Water outlet and adapting pipe water inlet connect;
Port is set on the shell of 3D printer ontology;Baffle plate setting is in passage port;Baffle passes through connector and 3D printing The rotation connection of machine ontology;The inside of the one end fits insertion bottom plate of gag lever post, and be slidably connected with bottom plate;The other end of gag lever post It is connect with support rod;The upper end of support rod is connect with connecting rod;One end of connecting rod towards the vertical central axes of bottom plate passes through port And extend to the inside of 3D printer ontology;The periphery of connecting rod is arranged in supporting block;Limiting slot is arranged in the inside of support plate, and Limiting slot forms the entrance being inserted into for locating shaft in the lower end of support plate;The inside of the one end fits insertion limiting slot of locating shaft, And it is slidably connected with the inner wall of limiting slot;The other end of locating shaft is connect with supporting block;Open box is placed on, and is contained Liquid water;The inside of 3D printer ontology is arranged in receiving hopper, and the discharge end of receiving hopper is located at the top of open box.
Preferably, hampering plate is arranged in the inside of receiving hopper.
Preferably, the angle between hampering plate and receiving hopper that inclines is 30 degree.
Preferably, jet pipe setting is multiple.
Preferably, it is equidistant between adjacent two-by-two in multiple jet pipes.
Preferably, the inner wall smooth of receiving hopper.
Above-mentioned technical proposal of the invention has following beneficial technical effect:
By starting air blower, air blower conveying wind is entered in air supply tube, by air supply tube, adapting pipe and isocon, Printing is generated by jet pipe ejection in the process finally and the particle for being attached to 3D printer body interior is blown off to receiving hopper, and It is entered in open box by receiving hopper, and then has achieved the effect that centralized collection and cleared up automatically, avoid printing needs after the completion The generation of the time-consuming phenomenon of manual cleaning is wanted, and then convenient for printing again, by the way that liquid water will be contained in open box, so that dropping down onto spacious The particle stabilized inside for being stored in open box in mouth box;It is supplied water by water supplying pipe to spray head, to 3D printer ontology Inside is rinsed, to achieve the effect that rinse;Under the action of gag lever post, limit is played to the position of support rod Effect, by removing gag lever post, gag lever post drives connecting rod and support plate to remove, and then has reached the effect for facilitating removal of support plate Fruit completes object to the printing in support plate and cools down, in the effect of locating shaft convenient for separating support plate with locating shaft Under, plate easy to support is placed on the enterprising enforcement of locating shaft again and uses, by exchanging support plate for, so that 3D printer ontology is not printed The limitation of printer cooling time after the completion, and then achieved the effect that lasting printing and efficiently printed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the 3D printer that one kind proposed by the present invention can clear up automatically.
Fig. 2 is the partial structural diagram in the 3D printer that one kind proposed by the present invention can clear up automatically.
Appended drawing reference: 1,3D printer ontology;2, air blower;3, air supply tube;4, adapting pipe;5, water supplying pipe;6, isocon; 7, jet pipe;8, connector;9, baffle;10, receiving hopper;11, support plate;12, locating shaft;13, supporting block;14, connecting rod;15, Support rod;16, supporting leg;17, open box;18, bottom plate;19, gag lever post;20, port;21, limiting slot;22, hampering plate.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured The concept of invention.
As shown in Figs. 1-2, the 3D printer that one kind proposed by the present invention can clear up automatically, including 3D printer ontology 1, drum Blower 2, air supply tube 3, adapting pipe 4, water supplying pipe 5, isocon 6, jet pipe 7, connector 8, baffle 9, receiving hopper 10, support plate 11, Locating shaft 12, supporting block 13, connecting rod 14, support rod 15, supporting leg 16, open box 17, bottom plate 18 and gag lever post 19;
The upper end of supporting leg 16 is connect with 3D printer ontology 1, and the lower end of supporting leg 16 is connect with bottom plate 18;Air blower 2 It is arranged on 3D printer ontology 1;The inside of 3D printer ontology 1 is arranged in isocon 6;The water inlet end and isocon 6 of jet pipe 7 Water outlet connection;The inlet end of isocon 6 is connect with the outlet side of adapting pipe 4;The inlet end of adapting pipe 4 and air blower 2 It is connected for air port;The water outlet of water supplying pipe 5 is connect with the water inlet of adapting pipe 4;
Port 20 is set on the shell of 3D printer ontology 1;Baffle 9 is arranged at port 20;Baffle 9 passes through connector 8 It is rotatablely connected with 3D printer ontology 1;The inside of the one end fits insertion bottom plate 18 of gag lever post 19, and slide and connect with bottom plate 18 It connects;The other end of gag lever post 19 is connect with support rod 15;The upper end of support rod 15 is connect with connecting rod 14;Connecting rod 14 is the bottom of towards One end of the vertical central axes of plate 18 passes through port 20 and extends to the inside of 3D printer ontology 1;The setting of supporting block 13 is connecting The periphery of bar 14;Limiting slot 21 is arranged in the inside of support plate 11, and limiting slot 21 is formed in the lower end of support plate 11 for locating shaft The entrance of 12 insertions;The inside of the one end fits insertion limiting slot 21 of locating shaft 12, and be slidably connected with the inner wall of limiting slot 21; The other end of locating shaft 12 is connect with supporting block 13;Open box 17 is placed on bottom plate 18, and contains liquid water;Receiving hopper 10 is set It sets in the inside of 3D printer ontology 1, and the discharge end of receiving hopper 10 is located at the top of open box 17.
In the present invention, by starting air blower 2, air blower 2 conveys wind and enters in air supply tube 3, by air supply tube 3, holds Adapter tube 4 and isocon 6 are finally sprayed by jet pipe 7 to the particle for generating and being attached to inside 3D printer ontology 1 during printing It blows off to receiving hopper 10, and is entered in open box 17 by receiving hopper 10, and then reached centralized collection and cleared up automatically Effect avoids and needs the generation of the time-consuming phenomenon of manual cleaning after the completion of printing, and then convenient for printing again, by by open box Liquid water is contained in 17, so that dropping down onto the particle stabilized inside for being stored in open box 17 in open box 17;In gag lever post 19 Under effect, play the role of limit to the position of support rod 15, by removing gag lever post 19, gag lever post 19 drives connecting rod 14 It is removed with support plate 11, and then has achieved the effect that facilitate removal of support plate 11, convenient for support plate 11 is separated with locating shaft 12, It completes object to the printing in support plate 11 to cool down, under the action of locating shaft 12, plate 11 easy to support is placed on fixed again Position enterprising enforcements of axis 12 use, by exchanging support plate 11 for so that 3D printer ontology 1 do not printed after the completion of printer cool down when Between limitation, and then achieved the effect that it is lasting printing and efficiently print.
In an alternative embodiment, hampering plate 22 is arranged in the inside of receiving hopper 10, avoids and falls into receiving hopper 10 Interior printing particle is due to collision and there is a phenomenon where rebounding, so that printing is particle stabilized to drop down onto receiving hopper 10.
In an alternative embodiment, the angle between hampering plate 22 and receiving hopper 10 that inclines is 30 degree.
In an alternative embodiment, jet pipe 7 is arranged multiple, carries out the particle that sufficiently blowing processing printing generates.
In an alternative embodiment, it is equidistant between adjacent two-by-two in multiple jet pipes 7, carries out uniformly sufficiently processing Print particle.
In an alternative embodiment, the inner wall smooth of receiving hopper 10, so that printing particle smoothly slides to open box In 17.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing Change example.

Claims (6)

1. the 3D printer that one kind can clear up automatically, which is characterized in that including 3D printer ontology (1), air blower (2), air-supply Manage (3), adapting pipe (4), water supplying pipe (5), isocon (6), jet pipe (7), connector (8), baffle (9), receiving hopper (10), support Plate (11), locating shaft (12), supporting block (13), connecting rod (14), support rod (15), supporting leg (16), open box (17), bottom plate (18) and gag lever post (19);
The upper end of supporting leg (16) is connect with 3D printer ontology (1), and the lower end of supporting leg (16) is connect with bottom plate (18);Air blast Machine (2) is arranged on 3D printer ontology (1);Isocon (6) is arranged in the inside of 3D printer ontology (1);Jet pipe (7) into Water end (W.E.) is connect with the water outlet of isocon (6);The inlet end of isocon (6) is connect with the outlet side of adapting pipe (4);Adapting pipe (4) inlet end is connect with air blower (2) for air port;The water outlet of water supplying pipe (5) is connect with the water inlet of adapting pipe (4);
Port (20) are set on the shell of 3D printer ontology (1);Baffle (9) is arranged at port (20);Baffle (9) passes through company Fitting (8) and 3D printer ontology (1) are rotatablely connected;The inside of one end fits insertion bottom plate (18) of gag lever post (19), and with Bottom plate (18) is slidably connected;The other end of gag lever post (19) is connect with support rod (15);The upper end of support rod (15) and connecting rod (14) it connects;One end of connecting rod (14) towards the vertical central axes of bottom plate (18) passes through port (20) and extends to 3D printer sheet The inside of body (1);Supporting block (13) is arranged in the periphery of connecting rod (14);Limiting slot (21) are arranged in the inside of support plate (11), And limiting slot (21) forms the entrance being inserted into for locating shaft (12) in the lower end of support plate (11);The one end fits of locating shaft (12) It is inserted into the inside of limiting slot (21), and is slidably connected with the inner wall of limiting slot (21);The other end and supporting block of locating shaft (12) (13) it connects;Open box (17) is placed on bottom plate (18), and contains liquid water;Receiving hopper (10) is arranged in 3D printer ontology (1) inside, and the discharge end of receiving hopper (10) is located at the top of open box (17).
2. the 3D printer that one kind according to claim 1 can clear up automatically, which is characterized in that the inside of receiving hopper (10) It is arranged hampering plate (22).
3. the 3D printer that one kind according to claim 2 can clear up automatically, which is characterized in that the hampering plate that inclines (22) with connect Angle between hopper (10) is 30 degree.
4. the 3D printer that one kind according to claim 1 can clear up automatically, which is characterized in that jet pipe (7) setting is multiple.
5. the 3D printer that one kind according to claim 4 can clear up automatically, which is characterized in that two in multiple jet pipes (7) Two it is adjacent between be equidistant.
6. the 3D printer that one kind according to claim 1 can clear up automatically, which is characterized in that the inner wall of receiving hopper (10) It is smooth.
CN201910481233.0A 2019-06-04 2019-06-04 A kind of 3D printer that can be cleared up automatically Pending CN110126277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910481233.0A CN110126277A (en) 2019-06-04 2019-06-04 A kind of 3D printer that can be cleared up automatically

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910481233.0A CN110126277A (en) 2019-06-04 2019-06-04 A kind of 3D printer that can be cleared up automatically

Publications (1)

Publication Number Publication Date
CN110126277A true CN110126277A (en) 2019-08-16

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111842376A (en) * 2020-06-19 2020-10-30 中国建筑第八工程局有限公司 Printing head self-cleaning and control system for building 3D printing

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2992942A1 (en) * 2014-09-03 2016-03-09 SLM Solutions Group AG Apparatus for producing 3D work pieces by additive manufacturing with an improved recycling gas circuit and related method using the same
CN105856578A (en) * 2016-06-20 2016-08-17 海宁酷彩数码科技有限公司 3D printer
US20160236422A1 (en) * 2015-02-13 2016-08-18 Ricoh Company, Ltd. Device and method for removing powder and apparatus for fabricating three-dimensional object
CN106378936A (en) * 2016-09-29 2017-02-08 南京师范大学 Digital micro-sprayer protective system based on UV adhesive
JP2017061745A (en) * 2015-09-25 2017-03-30 エスエルエム ソルーションズ グループ アーゲー Apparatus for manufacturing three-dimensional workpiece with improved gas flow
CN106827543A (en) * 2017-04-01 2017-06-13 广州科苑新型材料有限公司 A kind of Rapid Cleaning of photocureable rapid shaping part and solidify afterwards device
CN206953613U (en) * 2017-05-23 2018-02-02 宁波科丽特自动化设备有限公司 A kind of car trim sweating welder
CN207535320U (en) * 2017-12-05 2018-06-26 岭南师范学院 A kind of dust-extraction unit for 3D printer
CN207643708U (en) * 2017-11-06 2018-07-24 佛山市盈怡纸制品实业有限公司 A kind of 3D printer
CN207756542U (en) * 2017-11-02 2018-08-24 吴佳 A kind of dust-free 3D printer
US10076878B2 (en) * 2014-03-31 2018-09-18 Xerox Corporation System for detecting inoperative inkjets in three-dimensional object printing using an optical sensor and reversible thermal substrates
CN108773073A (en) * 2018-05-19 2018-11-09 安徽中健三维科技有限公司 A kind of 3D printer automatic ash removing print platform
CN208867580U (en) * 2018-09-28 2019-05-17 四川恒谦科技有限责任公司 A kind of 3D printer rack with dedusting function

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10076878B2 (en) * 2014-03-31 2018-09-18 Xerox Corporation System for detecting inoperative inkjets in three-dimensional object printing using an optical sensor and reversible thermal substrates
EP2992942A1 (en) * 2014-09-03 2016-03-09 SLM Solutions Group AG Apparatus for producing 3D work pieces by additive manufacturing with an improved recycling gas circuit and related method using the same
US20160236422A1 (en) * 2015-02-13 2016-08-18 Ricoh Company, Ltd. Device and method for removing powder and apparatus for fabricating three-dimensional object
JP2017061745A (en) * 2015-09-25 2017-03-30 エスエルエム ソルーションズ グループ アーゲー Apparatus for manufacturing three-dimensional workpiece with improved gas flow
CN105856578A (en) * 2016-06-20 2016-08-17 海宁酷彩数码科技有限公司 3D printer
CN106378936A (en) * 2016-09-29 2017-02-08 南京师范大学 Digital micro-sprayer protective system based on UV adhesive
CN106827543A (en) * 2017-04-01 2017-06-13 广州科苑新型材料有限公司 A kind of Rapid Cleaning of photocureable rapid shaping part and solidify afterwards device
CN206953613U (en) * 2017-05-23 2018-02-02 宁波科丽特自动化设备有限公司 A kind of car trim sweating welder
CN207756542U (en) * 2017-11-02 2018-08-24 吴佳 A kind of dust-free 3D printer
CN207643708U (en) * 2017-11-06 2018-07-24 佛山市盈怡纸制品实业有限公司 A kind of 3D printer
CN207535320U (en) * 2017-12-05 2018-06-26 岭南师范学院 A kind of dust-extraction unit for 3D printer
CN108773073A (en) * 2018-05-19 2018-11-09 安徽中健三维科技有限公司 A kind of 3D printer automatic ash removing print platform
CN208867580U (en) * 2018-09-28 2019-05-17 四川恒谦科技有限责任公司 A kind of 3D printer rack with dedusting function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111842376A (en) * 2020-06-19 2020-10-30 中国建筑第八工程局有限公司 Printing head self-cleaning and control system for building 3D printing
CN111842376B (en) * 2020-06-19 2021-11-02 中国建筑第八工程局有限公司 Printing head self-cleaning and control system for building 3D printing

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Application publication date: 20190816