CN110549616A - Retractable 3D printing apparatus - Google Patents
Retractable 3D printing apparatus Download PDFInfo
- Publication number
- CN110549616A CN110549616A CN201810562438.7A CN201810562438A CN110549616A CN 110549616 A CN110549616 A CN 110549616A CN 201810562438 A CN201810562438 A CN 201810562438A CN 110549616 A CN110549616 A CN 110549616A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- lower cylinder
- powder
- telescopic
- guide
- 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.)
- Granted
Links
- 238000010146 3D printing Methods 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims description 46
- 230000007480 spreading Effects 0.000 claims description 23
- 238000003892 spreading Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 11
- 239000000084 colloidal system Substances 0.000 claims description 8
- 238000007639 printing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 12
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000000149 argon plasma sintering Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/20—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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses telescopic 3D printing equipment, which belongs to the field of additive manufacturing and comprises a rack, a cylinder body, a lead screw nut pair and a guide cylinder body; the cylinder body comprises an upper cylinder body and a lower cylinder body, and the upper cylinder body and the lower cylinder body are connected through a telescopic structure; guide rails are arranged on two symmetrical walls in the guide cylinder body, and correspondingly, sliding blocks are arranged on two symmetrical walls of the lower cylinder body; the sliding block is matched with the guide rail; the screw nut pair is positioned at the center of the bottom end outside the lower cylinder body and is consistent with the cylinder body in the Z-axis direction. Compared with the prior art, the scheme adopted by the invention can completely solve the problems of sealing and cleaning, the forming cylinder is divided into the upper cylinder body and the lower cylinder body, the lower cylinder body is not provided with a workbench, the bottom of the lower cylinder body is used as the workbench, the sealing problem between the workbench and the cylinder wall can be completely solved, and the problem of cleaning trouble does not exist; the guide cylinder body is arranged outside the lower cylinder body, and the guide cylinder body is connected with the lower cylinder body through a guide rail sliding block so as to drive the lower cylinder body to do lifting motion.
Description
Technical Field
The invention relates to the field of additive manufacturing, in particular to a telescopic 3D printing device.
Background
with the development of 3D printing technology, the research on laser sintering technology is more and more intensive. The process of laser sintering processing parts is that a powder supply and spreading device spreads a certain amount of powder on a workbench, then a strickler is used for strickling the powder, then a laser head is used for sintering the powder on the layer, after the processing is finished, the powder supply and spreading device spreads the powder, the strickling is continued, and the process is repeated to obtain the required parts.
In the laser sintering technology, the requirement on the sealing condition of the forming chamber is high, and most of the current technologies focus on researching how to realize the sealing state of the forming chamber by using external conditions, for example, a vacuum pump is arranged outside the forming chamber and the sealing is realized by using vacuum; or how to design a better sealing part or material to realize the sealing between the workbench and the forming cylinder wall, but the prior art can not achieve a more ideal sealing effect, and the sealing effect is increasingly poor due to abrasion, so that a series of maintenance problems are caused due to the need of frequently replacing a sealing element, and more importantly, the quality of the forming part can not meet the requirement; in addition, the current technologies cannot solve the problem of removing powder, and when a plurality of kinds of powder need to be printed in the same forming cylinder, it is important to remove the powder remaining in the forming cylinder.
Disclosure of Invention
The invention aims to provide a telescopic forming cylinder which can completely solve the problems of sealing and cleaning.
In order to achieve the purpose, the invention adopts the technical scheme that: a telescopic 3D printing device comprises a rack 1, an upper cylinder 2, a lower cylinder 6, a lead screw nut pair 8, a guide cylinder 4 and a powder supply and spreading mechanism 14;
the powder supply and spreading device 14 is arranged in the upper cylinder body 2 and comprises a horizontal guide rail 9, an air cylinder 11, an upper fixing plate 10, a lower fixing plate 12 and a powder supply and spreading device 13; two ends of the cylinder 11 are respectively connected with the upper fixing plate 10 and the lower fixing plate 12; a powder supply and spreading device 13 is arranged below the lower fixing plate 12; a horizontal guide rail 9 is arranged above the upper fixing plate 10 to control the movement of the powder supplying and spreading device 14; the stroke height of the cylinder 11 is larger than the telescopic distance of the telescopic structure 3 so as to realize powder supply and powder laying;
The upper cylinder body and the lower cylinder body are connected through a telescopic structure 4, preferably, the connection mode is fixed connection, so that a forming chamber is guaranteed to be a closed space; guide rails 5 are arranged on two symmetrical walls in the guide cylinder body 4, preferably, a pair of guide rails is arranged on each of the two walls and should be arranged in the middle of the cylinder wall of the guide cylinder body 4 to ensure that the lower cylinder body 6 keeps balance in the lifting process, correspondingly, sliding blocks 7 are arranged on the two symmetrical walls of the lower cylinder body 6, and the sliding blocks 7 are matched with the guide rails 5 to further realize the connection of the lower cylinder body 6 and the guide cylinder body 4;
The screw-nut pair 8 is located at the center of the bottom end outside the lower cylinder body 6, and two ends of the screw-nut pair 8 are respectively connected with the lower cylinder body 6 and the guide cylinder body 4 and are consistent with the cylinder body in the Z-axis direction.
further, the telescopic structure 3 is made of telescopic rubber, and preferably, the telescopic framework 3 comprises 4 pieces of telescopic rubber, and is preferably made of PVC material to prevent fatigue wear during working.
Further, the cross section of the telescopic structure 3 is rectangular or circular, and preferably, the left end and the right end of each telescopic colloid are respectively and fixedly connected with the two telescopic colloids.
Further, the height of the guide cylinder 4 is higher than that of the lower cylinder 6 and is located below the telescopic structure 3, and the slidable distance of the slide block 7 is adapted to the telescopic distance of the telescopic structure 3, that is, the lifting distance of the lower cylinder 6 is at least less than or equal to the telescopic distance of the telescopic structure 3.
Further, the working method of the retractable 3D printing device is as follows:
a) during working, the lower cylinder body 6 is controlled by the lead screw nut pair 8 to do lifting movement, the lower cylinder body 6 descends one layer when one layer is printed, meanwhile, the upper cylinder body 2 is fixed, the telescopic structure 3 ensures that a closed space is formed between the upper cylinder body and the lower cylinder body, and in the working process, the powder supplying and spreading device 14 moves into the lower cylinder body 6 under the action of the air cylinder 11 to realize powder supplying and spreading;
b) In order to realize redundancy-free powder spreading to ensure the powder spreading quality, in the printing process, a rectangle needs to be sintered around the powder of the current layer when each layer of powder is spread, and the size of the sintered rectangle needs to be correspondingly adjusted according to the size of a part to be processed so as to ensure that the powder can keep the shape when being impacted and meet the printing requirement.
Compared with the prior art, the invention has the following advantages:
A kind of telescopic 3D printing apparatus, can solve totally and seal and washing the telescopic forming cylinder of the problem, the forming cylinder is divided into upper and lower cylinder bodies, do not have work stations in the lower cylinder body, use the bottom of the lower cylinder body as the work station, design can totally solve the sealing problem between cylinder wall and the work station like this, there is no trouble problem of washing too, the advantage designed like this also lies in can lighten the quality of the whole forming cylinder body greatly; the guide cylinder body is arranged outside the lower cylinder body, and the guide cylinder body is connected with the lower cylinder body through the guide rail sliding block so as to drive the lower cylinder body to do lifting motion and realize high-quality 3D printing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a sectional view of a front view of embodiment 1.
Fig. 2 is an overall schematic view of embodiment 1.
The corresponding part names indicated by the numbers in the figures:
1. Frame 2, upper cylinder body 3, telescopic structure 4, guide cylinder body 5, guide rail 6, lower cylinder body 7, slide block 8, lead screw nut pair 9, horizontal guide rail 10, upper fixing plate 11, air cylinder 12, lower fixing plate 13, powder supply powder spreader 14, powder supply powder spreading device
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like refer to orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
Example 1:
Referring to fig. 1 and 2, a retractable 3D printing apparatus includes a frame 1, an upper cylinder 2, a lower cylinder 6, a screw-nut pair 8, a guide cylinder 4, and a powder supplying and spreading mechanism 14.
In the embodiment, the upper cylinder body and the lower cylinder body are fixedly connected in a jogged mode through the telescopic structure so as to ensure that the forming chamber is a closed space; and guide rails 5 are arranged on two symmetrical walls in the guide cylinder body 4.
the guide rail 5 is fixed on the guide cylinder body 4 in a bolt connection mode, a pair of guide rails is arranged on each of the two walls and is arranged in the middle of the cylinder wall of the guide cylinder body 4 to ensure that the lower cylinder body 6 keeps balance in the lifting process, correspondingly, the two symmetrical walls of the lower cylinder body 6 are provided with the slide blocks 7, and the slide blocks 7 are fixed with the lower cylinder body 6 in a bolt connection mode and are matched with the guide rails 5 to further realize the connection of the lower cylinder body 6 and the guide cylinder body 4.
In this embodiment, the screw-nut pair 8 is located at the center of the bottom end outside the lower cylinder 6, and both ends of the screw-nut pair are movably connected with the lower cylinder 6 and the guide cylinder 4 through bearings respectively and are consistent with the cylinder Z-axis direction.
The telescopic structure 3 is composed of 4 telescopic colloids, and the material of the telescopic structure is PVC material for preventing fatigue wear generated in the working process.
The cross section of the telescopic structure 3 is rectangular, and the left end and the right end of each telescopic colloid are fixedly connected with the two telescopic colloids respectively in an embedded mode.
The height of the guide cylinder body 4 is higher than that of the lower cylinder body 6 and is positioned below the telescopic structure 3, and the slidable distance of the sliding block 7 is consistent with the telescopic distance of the telescopic structure 3, namely the lifting distance of the lower cylinder body 6 is smaller than the telescopic distance of the telescopic structure 3.
the working mode of the invention is as follows:
During operation, the lower cylinder body is controlled by the screw-nut pair to move up and down, the lower cylinder body descends one layer when printing one layer, meanwhile, the upper cylinder body is fixed, the telescopic structure ensures that a closed space is formed between the upper cylinder body and the lower cylinder body, and in the working process, the powder supplying and spreading device moves to the lower cylinder body under the action of the air cylinder to realize powder supplying and spreading.
In order to realize redundancy-free powder spreading to ensure the powder spreading quality, in the printing process, a rectangle needs to be sintered around the powder of the current layer when each layer of powder is spread, and the size of the sintered rectangle needs to be correspondingly adjusted according to the size of a part to be processed so as to ensure that the powder can keep the shape when being impacted and meet the printing requirement.
Example 2:
The embodiment is different from embodiment 1 only in that, in order to meet different types of 3D printing requirements, the cross-sectional shape of the telescopic structure formed by the telescopic colloid is circular, and correspondingly, the upper and lower cylinder bodies are also circular forming cylinders, and when the telescopic structure is applied to the circular 3D printing forming cylinder, the processing efficiency can be improved to a great extent, and the equipment is simple.
The operation and other structures and connection modes of the present embodiment are the same as those of embodiment 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a retractable 3D printing apparatus, includes frame (1), slider (7), cylinder (11), supplies powder spread powder ware (13), shaping cylinder body, screw nut pair (8) and direction cylinder body (4), its characterized in that: the powder supply and spreading device (13) is fixedly connected with the sliding block (7) through the air cylinder (11);
The forming cylinder body comprises an upper cylinder body (2) and a lower cylinder body (6), the upper cylinder body and the lower cylinder body are fixedly connected with the telescopic cylinder body (3), and the forming cylinder body, the upper cylinder body and the lower cylinder body form a sealed cavity;
Guide rails (5) are arranged on two symmetrical walls in the guide cylinder body (4), and correspondingly, sliding blocks (7) are arranged on two symmetrical walls of the lower cylinder body (6); the sliding block (7) is matched with the guide rail (5);
the screw-nut pair (8) is positioned at the center of the bottom end outside the lower cylinder body (6) and is consistent with the Z-axis direction of the forming cylinder body.
2. The retractable 3D printing apparatus of claim 1, wherein: the telescopic structure (3) is colloid.
3. The retractable 3D printing apparatus of claim 2, wherein: the colloid is made of PVC material.
4. The retractable 3D printing apparatus of claim 3, wherein: the section of the telescopic structure (3) is rectangular or circular.
5. the retractable 3D printing apparatus of claim 1, wherein: the height of the guide cylinder body (4) is higher than that of the lower cylinder body (6) and is positioned below the telescopic structure (3), and the sliding distance of the sliding block (7) is adapted to the telescopic distance of the telescopic structure (3).
6. The retractable 3D printing apparatus of claim 1, wherein: the working method of the telescopic 3D printing equipment comprises the following steps:
a) when the powder feeding and spreading device works, the lower cylinder body (6) is controlled by the lead screw and nut pair (8) to do lifting movement, the lower cylinder body (6) descends one layer when one layer is printed, meanwhile, the upper cylinder body (2) is fixed, the telescopic structure (3) ensures that a closed space is formed between the upper cylinder body and the lower cylinder body, and in the working process, the powder feeding and spreading device (14) moves into the lower cylinder body (6) under the action of the air cylinder (11) to realize powder feeding and spreading;
b) in order to realize redundancy-free powder spreading to ensure the powder spreading quality, in the printing process, a rectangle needs to be sintered around the powder of the current layer when each layer of powder is spread, and the size of the sintered rectangle needs to be correspondingly adjusted according to the size of a part to be processed so as to ensure that the powder can keep the shape when being impacted and meet the printing requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562438.7A CN110549616B (en) | 2018-06-04 | 2018-06-04 | Retractable 3D printing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562438.7A CN110549616B (en) | 2018-06-04 | 2018-06-04 | Retractable 3D printing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110549616A true CN110549616A (en) | 2019-12-10 |
| CN110549616B CN110549616B (en) | 2022-03-18 |
Family
ID=68735433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810562438.7A Active CN110549616B (en) | 2018-06-04 | 2018-06-04 | Retractable 3D printing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110549616B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939677A (en) * | 2022-06-02 | 2022-08-26 | 季华实验室 | Forming cylinder equipment for 3D printing and operation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206140936U (en) * | 2016-10-10 | 2017-05-03 | 深圳市圆梦精密技术研究院 | Sealing device and three -dimensional inkjet printer |
| CN106696260A (en) * | 2017-03-17 | 2017-05-24 | 南京增材制造研究院发展有限公司 | 3D (three-dimensional) printing powder delivery and paving linkage type bidirectional powder paving device and equipment |
| CN107498051A (en) * | 2017-09-21 | 2017-12-22 | 四川天府珞埔三维科技有限公司 | A kind of feed cylinder powder isolating device for precinct laser fusion |
| CN107627607A (en) * | 2017-10-13 | 2018-01-26 | 芜湖天梦信息科技有限公司 | A kind of sedimentation workbench of 3D printer |
| CN107867400A (en) * | 2017-12-19 | 2018-04-03 | 浙江大学 | The fog machine liquid case that a kind of automatic anti-earthquake swings |
| CN107962776A (en) * | 2017-11-24 | 2018-04-27 | 安徽科元三维技术有限公司 | Multifunctional S L S printing product cleaning device |
-
2018
- 2018-06-04 CN CN201810562438.7A patent/CN110549616B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206140936U (en) * | 2016-10-10 | 2017-05-03 | 深圳市圆梦精密技术研究院 | Sealing device and three -dimensional inkjet printer |
| CN106696260A (en) * | 2017-03-17 | 2017-05-24 | 南京增材制造研究院发展有限公司 | 3D (three-dimensional) printing powder delivery and paving linkage type bidirectional powder paving device and equipment |
| CN107498051A (en) * | 2017-09-21 | 2017-12-22 | 四川天府珞埔三维科技有限公司 | A kind of feed cylinder powder isolating device for precinct laser fusion |
| CN107627607A (en) * | 2017-10-13 | 2018-01-26 | 芜湖天梦信息科技有限公司 | A kind of sedimentation workbench of 3D printer |
| CN107962776A (en) * | 2017-11-24 | 2018-04-27 | 安徽科元三维技术有限公司 | Multifunctional S L S printing product cleaning device |
| CN107867400A (en) * | 2017-12-19 | 2018-04-03 | 浙江大学 | The fog machine liquid case that a kind of automatic anti-earthquake swings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939677A (en) * | 2022-06-02 | 2022-08-26 | 季华实验室 | Forming cylinder equipment for 3D printing and operation method |
| CN114939677B (en) * | 2022-06-02 | 2023-06-02 | 季华实验室 | Forming cylinder equipment for 3D printing and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110549616B (en) | 2022-03-18 |
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Effective date of registration: 20240229 Address after: Room 57, Area A, 5th Floor, Global Plaza, No. 158 Wusi Road, Gudong Street, Gulou District, Fuzhou City, Fujian Province, 350000 Patentee after: Fuzhou Luhe Intellectual Property Services Co.,Ltd. Country or region after: China Address before: 710000 south building, West fifth floor, Jiaotong University Science Park, No. 99, Yanxiang Road, Yanta District, Xi'an City, Shaanxi Province Patentee before: SHAANXI HENGTONG INTELLIGENT MACHINE Co.,Ltd. Country or region before: China |
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