CN210023772U - Dot-matrix powder laying 3D printing device based on resistance heating - Google Patents
Dot-matrix powder laying 3D printing device based on resistance heating Download PDFInfo
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- CN210023772U CN210023772U CN201920796322.XU CN201920796322U CN210023772U CN 210023772 U CN210023772 U CN 210023772U CN 201920796322 U CN201920796322 U CN 201920796322U CN 210023772 U CN210023772 U CN 210023772U
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Abstract
The utility model provides a dot matrix shop powder 3D printing device and printing method based on resistance heating, including seal housing, pay-off mouth, hydraulic pressure crane, dot matrix resistance heating board, send powder device, movable support, shop's powder device, powder bed groove, print base station, baffle, riser and step motor. The utility model discloses a powder 3D printing device is spread to dot matrix adopts the mode based on resistance heating to utilize the means of lattice to realize the vibration material disk printing, carry out space net section with three-dimensional part promptly and divide the back, divide into the point of array and according to three-dimensional part individual layer section with the base station on the powder bed the regional heating that needs to print melt or the sintering obtains the face shaping earlier, then pile up the direct forming gradually layer by layer, lower manufacturing cost and high production efficiency have, the period of preparing the part is printed to shop's powder has been shortened.
Description
Technical Field
The utility model relates to a 3D prints technical field, particularly relates to powder 3D printing device is spread to dot matrix based on resistance heating.
Background
The powder laying 3D printing technology is a method for quickly and directly forming metal parts, the SLM (selective laser melting) technology is used most at present, in addition, the EBSM technology is used for selectively melting electron beams, and the most basic principle of quick forming is that a complex three-dimensional part is directly formed in a manufacturing mode of melting and stacking layer by layer through a point scanning surface. The technology can be used for processing and manufacturing metal parts with complex structures which cannot be manufactured by the traditional processing means, and the parts prepared by the rapid direct forming method play an important role in the fields of aerospace, biomedical treatment and the like.
Both the SLM (selective laser melting) technology and the EBSM (electron beam melting) technology are built up layer by layer after scanning a surface by a single light spot or a plurality of light spots, namely, the light spots are built up layer by layer after surface-to-surface molding.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a powder 3D printing device is spread to dot matrix based on resistance heating for metal part solves and spreads powder 3D printing technique printing cycle overlength, the higher problem of cost at present.
In order to achieve the purpose, the utility model provides a dot matrix powder laying 3D printing device based on resistance heating, which comprises a sealing shell, a feeding port, a hydraulic lifting frame, a dot matrix resistance heating plate, a powder feeding device, a movable support, a powder laying device, a powder bed groove, a printing base platform, a clapboard, a lifter and a stepping motor;
the sealing shell is used for isolating the printing environment from the outside and is in a full inert gas environment during printing;
the partition plate is arranged to divide the sealed shell into an upper cavity and a lower cavity, the hydraulic lifting frame, the dot matrix resistance heating plate, the powder feeding device, the movable support and the powder paving device are arranged in the upper cavity, and the powder bed groove, the printing base platform, the lifter and the stepping motor are arranged in the lower cavity;
the feeding port is arranged outside the sealed shell, and the metal powder enters the powder feeding device through the inlet of the feeding port;
the powder feeding device comprises a storage bin and a powder feeding assembly, the storage bin is provided with a cavity for containing metal powder, and the cavity is communicated with the feeding port; the powder feeding assembly is arranged at the lower part of the storage bin and is used for receiving the metal powder conveyed from the storage bin;
a movable bracket is arranged below the powder feeding device and is positioned on the partition plate; the powder feeding assembly is positioned in a space defined by the movable support, and a discharge hole at the bottom of the powder feeding assembly is close to the partition plate so as to provide metal powder for printing a layer;
the powder spreading device comprises a rolling roller and a scraper, the scraper is arranged at the bottom end of the movable support and is arranged to move synchronously with the movable support to scrape metal powder conveyed by the powder feeding device into the powder bed groove, the rolling roller is arranged to be driven to roll on the partition plate to drive the whole movable support to move and compact the metal powder spread into the powder bed groove, the powder bed groove is positioned below the partition plate and is flush with the partition plate after powder spreading, and a groove with the same section as the powder bed groove is formed in the partition plate;
the printing base is fixed below the powder bed groove;
the stepping motor is arranged at the bottom of the sealing shell and is positioned in the lower cavity; the output end of the stepping motor is connected with the lifter, and the stepping motor drives the lifter to move up and down to drive the printing base platform and the powder bed groove to synchronously lift.
In a further embodiment, the dot-matrix powder spreading 3D printing device further comprises at least one group of powder recovery device, the powder recovery device is provided with a recovery groove and a recovery bottle, the recovery groove is arranged below the partition plate, the recovery bottle is fixed below the recovery groove and communicated with the recovery bottle, and an opening portion is arranged on the partition plate corresponding to the recovery groove, so that the metal powder is collected into the recovery bottle through the recovery groove.
In a further embodiment, the cross-sectional shape of the opening is the same as the upper opening of the recovery tank.
In a further embodiment, the scraper is also arranged to scrape the metal powder and push the excess powder into the recovery tank as the movable carriage moves synchronously.
In a further embodiment, the dot matrix type powder paving 3D printing device is provided with two groups of powder recovery devices which are respectively arranged on two sides of the powder bed groove, and each group of powder recovery devices is correspondingly provided with a scraper.
In a further embodiment, when powder device gos forward left and spread the powder, hydraulic pressure crane drives dot matrix resistance heating board rebound, when advancing right and reset under spreading powder scraper system, hydraulic pressure crane drives dot matrix resistance heating board rebound, carries out 3D and prints.
In a further embodiment, the dot matrix type resistance heating plate comprises modular heating modules consisting of densely arranged resistance heating needles, each heating module adopts programmable control and can be independently replaced, and the heating regions are controlled by the plurality of heating modules through programming.
In a further embodiment, the resistance heating needle is coated with a high temperature resistant alumina ceramic coating.
In a further embodiment, a resistance heating element is arranged inside the printing base platform and used for preheating the powder bed groove.
In a further embodiment, a first slope structure is formed at the bottom of the inner cavity of the storage bin, a first powder feeding roller and a first opening are arranged at the bottom of the first slope structure, and metal powder is conveyed to the powder feeding assembly at a constant speed through rotation of the first powder feeding roller.
In a further embodiment, the powder feeding assembly is provided with a horn-shaped receiving end and a buffer cavity communicated with the receiving end, the receiving end is fixedly installed at the top of the movable support and used for receiving the metal powder conveyed from the storage bin, a second slope structure is formed inside the buffer cavity, a second powder feeding roller and a second opening are arranged at the bottom of the second slope structure, and the second powder feeding roller rotates to convey the metal powder to the partition plate at a constant speed.
In a further embodiment, the second powder feeding roller is smaller than the first powder feeding roller in size.
By the above technical scheme the utility model discloses a it is visible, the utility model discloses a powder 3D printing device is spread to dot matrix adopts the mode based on resistance heating to utilize the means of dot matrix to realize that additive manufacturing prints, carry out space net section with three-dimensional part promptly and divide the back, divide into the point of array and according to three-dimensional part individual layer section with the base station on the powder bed the regional heating that powder needs to be printed melt or the sintering obtains the face shaping earlier, then piles up direct forming gradually the layer.
The 3D printing device of the utility model carries out 3D printing, has lower production cost and extremely high production efficiency, greatly shortens the period of powder spreading, printing and part preparation, ensures the forming precision of parts, and can also print relatively complicated parts; in addition, the forming size of a single part can be large or small, the control is easy, and the method can be used for manufacturing large metal parts and has strong adaptability.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the inventive subject matter of this disclosure.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is the utility model discloses an overall structure schematic diagram based on powder printing apparatus is spread to resistance heating dot matrix metal
FIG. 2 is a detailed view of the dot matrix type processing panel of the resistance heating plate of the present invention
FIG. 3 is a schematic diagram of the dot matrix resistance heating plate and the powder bed used in the printing status of the present invention
In the figure, 1, a feeding port, 2, a sealing shell, 3, a hydraulic lifting frame, 4, a dot matrix type resistance heating plate, 5, a storage bin, 6, a powder feeding assembly, 7, a rolling roller, 8, a scraper, 9, a recovery tank, 10, a collecting bottle, 11, a powder bed tank, 12, a printing base table, 13, a lifter, 14, a stepping motor, 15, a resistance heating needle and 16, a high-temperature resistant alumina coating are arranged.
Detailed Description
For a better understanding of the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.
With reference to fig. 1-3, a dot matrix type powder spreading 3D printing apparatus based on resistance heating according to a preferred embodiment of the present invention includes a feeding port 1 and a sealing housing 2, wherein the feeding port 1 is disposed outside the sealing housing 2; the feeding port 1 is used for adding printed powder materials. And the fast screwing switch on the feeding port isolates the stable argon environment of the sealed shell 2 from the external environment, so as to achieve the accurate control of the oxygen content and the humidity in the printing process.
In combination with the figure, the dot matrix type powder paving 3D printing device further comprises a hydraulic lifting frame 3, a dot matrix type resistance heating plate 4, a powder feeding device, a movable support 17, a powder paving device, a powder bed groove 11, a collecting bottle 10, a printing base station 12, a partition plate 18, a lifter 13 and a stepping motor 14.
The sealed housing 2 is used for isolating the printing environment from the outside, and is in a full inert gas environment during printing. The feeding port 1 is installed outside the sealed housing, and the metal powder enters the powder feeding device through the inlet of the feeding port.
The partition plate 18 is set to divide the sealed shell 2 into an upper cavity and a lower cavity, the hydraulic lifting frame 3, the dot matrix resistance heating plate 4, the powder feeding device, the movable support 17 and the powder paving device are arranged in the upper cavity, and the powder bed groove 11, the printing base table 12, the collecting bottle 10, the lifter 13 and the stepping motor 14 are arranged in the lower cavity.
Referring to fig. 1, the powder feeding device includes a storage bin 5 and a powder feeding assembly 6, the storage bin 5 has a cavity for containing metal powder, and the cavity is communicated with the feeding port. The powder feeding assembly 6 is arranged at the lower part of the storage bin and is used for receiving the metal powder conveyed from the storage bin.
A movable bracket 17 is arranged below the powder feeding device and is positioned on a partition plate 18; the powder feeding assembly 17 is located in the space defined by the movable support 17, and the bottom discharge port of the powder feeding assembly 17 is adjacent to the partition plate to provide metal powder for printing a layer.
The powder spreading device comprises a pressing roller 7 and a scraper 8 for spreading powder, the scraper 8 is arranged at the bottom end of the movable support, and the scraper 8 is arranged to move synchronously with the movable support to scrape the metal powder conveyed by the powder feeding device into the powder bed groove 11. The rollers 7 are arranged to be driven to roll on the partition, to move the entire movable carriage 17, and to compact the metal powder spread in the powder bed chute.
Referring to fig. 1, the powder bed groove 11 is located below the partition plate and is flush with the partition plate after powder spreading, wherein the partition plate is formed with a groove having the same cross section as the powder bed groove. Therefore, metal powder is fed onto the partition plate from the feeding assembly 6, then the whole movable support 17 is driven to move through the movement of the rolling roller 7, the metal powder is strickled to the powder bed groove 11 through the scraper at the bottom of the movable support 17, and the strickled powder bed groove 11 (containing the metal powder printed with one layer) is flush with the partition plate. At the same time, the scraper is also arranged to push the excess powder into the recovery tank 9, with the movable carriage moving synchronously.
Referring to fig. 1, a printing base 12 is fixed below the powder bed chute. The stepping motor 14 is arranged at the bottom of the sealed shell and is positioned in the lower cavity; the output end of the stepping motor 14 is connected with the lifter 13, and the stepping motor drives the lifter to move up and down to drive the printing base 12 and the powder bed groove 11 to synchronously lift.
Thus, with the printing base 12 built into the powder bed tank 11, inside which a resistance heating element is used for powder bed printing preheating, the powder bed is placed on top of the base 12, and it is precisely controlled by the stepping motor 13 and the lifter 14 to print the thickness of each layer.
With reference to fig. 1, the dot-matrix powder spreading 3D printing apparatus of the present embodiment further includes at least one group of powder recycling apparatus, the powder recycling apparatus has a recycling tank 9 and a recycling bottle 10, the recycling tank 9 is disposed below the partition board, the recycling bottle 10 is fixed below the recycling tank 9 and is communicated with the recycling bottle, and an opening portion is disposed on the partition board at a position corresponding to the recycling tank, so that the metal powder is collected into the recycling bottle 10 via the recycling tank. Preferably, the cross-sectional shape of the opening is the same as the upper opening of the recovery tank.
With reference to fig. 1, 2 and 3, the dot matrix type resistance heating plate 4 includes modular heating modules formed by densely arranged resistance heating needles, each heating module is controlled by a programmable program and can be replaced independently, and the plurality of heating modules control the heating area by programming.
Combine fig. 1 to show, the utility model discloses a 3D printing device, wherein hydraulic pressure crane 3 fixes inside 2 sealed casings and is connected its reciprocating of control with dot matrix resistance heating board 4, and the time that stops through hydraulic pressure crane 3 comes the action time of accurate control dot matrix resistance heating board 4 and powder.
Referring to fig. 1 and 3, the end face of the dot matrix resistance heating plate 4 is designed in a modular manner (see fig. 2, right drawing), so that damaged components in different areas can be quickly replaced, and preferably, a high temperature resistant alumina ceramic coating 16 layer is coated on the resistance heating pin to prevent the molten metal from being adhered to the resistance heating pin. During printing, the powder in contact is heated by resistance heating, and the surrounding area is also heated, and the area of the powder heated depends on the type of material and the magnitude of resistance power (see fig. 3).
In a preferred embodiment, the dot matrix type powder spreading 3D printing device has two sets of the aforementioned powder recovery devices, which are respectively disposed on two sides of the powder bed groove, and each set of the powder recovery devices is correspondingly provided with a scraper.
Combine figure 1, when spreading the powder device and advancing left and spread the powder, the hydraulic pressure crane drives dot matrix resistance heating board rebound, when advancing right and reseing under spreading the powder system, the hydraulic pressure crane drives dot matrix resistance heating board rebound, carries out 3D and prints, consequently prevents two and spreads powder and take place to disturb when printing the work.
With reference to fig. 1, the bottom of the storage bin 5 is higher than the horn-shaped receiving portion at the top of the powder feeding assembly 6 to avoid collision and interference between the powder spreading device and the movable bracket during movement of the powder spreading device (together with the movable bracket).
Referring to fig. 1, a first slope structure 51 is formed at the bottom of the inner cavity of the storage bin 5, a first powder feeding roller 52 and a first opening 53 are arranged at the bottom of the first slope structure, and metal powder is conveyed at a constant speed through rotation of the first powder feeding roller and is conveyed to the powder feeding assembly through the first opening 31.
Send powder group 6 spare to have a tubaeform receiving terminal 61 and the cushion chamber 62 with the receiving terminal intercommunication, receiving terminal fixed mounting is at the top of movable support for receive the metal powder from the storage silo conveying, the inside formation of cushion chamber forms second slope structure 63, the bottom of second slope structure is provided with second and sends powder gyro wheel 64 and second opening, the rotation that sends powder gyro wheel through the second realizes at the uniform velocity conveying metal powder to the baffle on. The second opening has an elongated slit directed towards the partition 17.
Preferably, the second powder feed roller 64 is smaller in size than the first powder feed roller 52.
The 3D printing apparatus according to the embodiment shown in fig. 1 adopts a 3D printing mode of dot-matrix powder spreading, and specifically includes the following processes:
after the printing process is started, a certain amount of metal powder is conveyed to the metal powder in the storage bin through a powder conveying device, the powder is strickled off and compacted through a powder paving device consisting of a rolling roller and a scraper, and redundant powder is scraped away through the scraper and collected into a recovery bottle for storage;
when the powder spreading device moves forwards leftwards, the hydraulic lifting frame drives the dot matrix type resistance heating plate to move upwards to a point, when the powder spreading scraper system moves forwards rightwards and returns to the initial position, the hydraulic lifting frame drives the dot matrix type resistance heating plate to move downwards and contact with a powder bed, 3D printing is carried out, the area to be formed is heated by resistance heating on the dot matrix type resistance heating plate and then melted, so that powder in the area is melted or sintered, then the dot matrix type resistance heating plate is lifted slowly and the heating is stopped at the same time, and then the forming of the surface layer forming area solidification whole is finished;
after one layer of printing is finished, the printing base platform is moved downwards by using the stepping motor and the lifter, then new layer of powder laying, rolling and 3D printing are carried out, and new layer of printing is added in a circulating and reciprocating mode until the printing is finished.
By the above technical scheme the utility model discloses a it is visible, the utility model discloses a powder 3D printing device is spread to dot matrix adopts the mode based on resistance heating to utilize the means of dot matrix to realize that additive manufacturing prints, carry out space net section with three-dimensional part promptly and divide the back, divide into the point of array and according to three-dimensional part individual layer section with the base station on the powder bed the regional heating that powder needs to be printed melt or the sintering obtains the face shaping earlier, then piles up direct forming gradually the layer.
The 3D printing device of the utility model carries out 3D printing, has lower production cost and extremely high production efficiency, greatly shortens the period of powder spreading, printing and part preparation, ensures the forming precision of parts, and can also print relatively complicated parts; in addition, the forming size of a single part can be large or small, the control is easy, and the method can be used for manufacturing large metal parts and has strong adaptability.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The present invention is intended to cover by those skilled in the art various modifications and adaptations of the invention without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the claims.
Claims (11)
1. The utility model provides a powder 3D printing device is spread to dot matrix based on resistance heating, a serial communication port, including sealed casing, pay-off mouth, hydraulic pressure crane, dot matrix resistance heating board, send powder device, portable support, shop's powder device, powder bed groove, print base station, baffle, riser and step motor, wherein:
the sealing shell is used for isolating the printing environment from the outside and is in a full inert gas environment during printing;
the partition plate is arranged to divide the sealed shell into an upper cavity and a lower cavity, the hydraulic lifting frame, the dot matrix resistance heating plate, the powder feeding device, the movable support and the powder paving device are arranged in the upper cavity, and the powder bed groove, the printing base platform, the lifter and the stepping motor are arranged in the lower cavity;
the feeding port is arranged outside the sealed shell, and the metal powder enters the powder feeding device through the inlet of the feeding port;
the powder feeding device comprises a storage bin and a powder feeding assembly, the storage bin is provided with a cavity for containing metal powder, and the cavity is communicated with the feeding port; the powder feeding assembly is arranged at the lower part of the storage bin and is used for receiving the metal powder conveyed from the storage bin;
a movable bracket is arranged below the powder feeding device and is positioned on the partition plate; the powder feeding assembly is positioned in a space defined by the movable support, and a discharge hole at the bottom of the powder feeding assembly is close to the partition plate so as to provide metal powder for printing a layer;
the powder spreading device comprises a rolling roller and a scraper, the scraper is arranged at the bottom end of the movable support and is arranged to move synchronously with the movable support to scrape metal powder conveyed by the powder feeding device into the powder bed groove, the rolling roller is arranged to be driven to roll on the partition plate to drive the whole movable support to move and compact the metal powder spread into the powder bed groove, the powder bed groove is positioned below the partition plate and is flush with the partition plate after powder spreading, and a groove with the same section as the powder bed groove is formed in the partition plate;
the printing base is fixed below the powder bed groove;
the stepping motor is arranged at the bottom of the sealing shell and is positioned in the lower cavity; the output end of the stepping motor is connected with the lifter, and the stepping motor drives the lifter to move up and down to drive the printing base platform and the powder bed groove to synchronously lift.
2. The dot matrix type powder spreading 3D printing device based on resistance heating according to claim 1, further comprising at least one group of powder recovery devices, wherein each powder recovery device is provided with a recovery groove and a recovery bottle, the recovery groove is arranged below the partition plate, the recovery bottle is fixed below the recovery groove and is communicated with the recovery bottle, and an opening part is arranged on the partition plate corresponding to the recovery groove, so that the metal powder is collected into the recovery bottle through the recovery groove.
3. The dot matrix powder spreading 3D printing device based on resistance heating according to claim 2, wherein the cross-sectional shape of the opening part is the same as the upper opening part of the recovery tank.
4. The dot matrix powder spreading 3D printing device based on resistance heating of claim 2, wherein the scraper is further configured to scrape metal powder and push excess powder into a recovery tank as the movable support moves synchronously.
5. The dot matrix type powder spreading 3D printing device based on resistance heating according to claim 4, wherein the dot matrix type powder spreading 3D printing device is provided with two groups of powder recovery devices which are respectively arranged at two sides of the powder bed groove, and each group of powder recovery devices is correspondingly provided with a scraper.
6. The dot matrix powder spreading 3D printing device based on resistance heating of claim 1, wherein when the powder spreading device advances leftwards to spread powder, the hydraulic lifting frame drives the dot matrix resistance heating plate to move upwards, and when the powder spreading scraper system advances rightwards to reset, the hydraulic lifting frame drives the dot matrix resistance heating plate to move downwards to perform 3D printing.
7. The dot matrix powder-spreading 3D printing device based on resistance heating according to any one of claims 1-6, wherein the dot matrix resistance heating plate comprises modular heating modules consisting of densely arranged resistance heating needles, each heating module adopts programmable control and can be individually replaced, and the heating zones are controlled by a plurality of heating modules through programming.
8. The dot-matrix powder-spreading 3D printing device based on resistance heating of claim 7, wherein the resistance heating needle is coated with a high temperature resistant alumina ceramic coating.
9. The dot matrix powder-spreading 3D printing device based on resistance heating as claimed in claim 1, wherein a resistance heating element is arranged inside the printing base platform to preheat the powder bed groove.
10. The dot matrix type powder spreading 3D printing device based on resistance heating according to claim 1, wherein a first slope structure is formed at the bottom of the inner cavity of the storage bin, a first powder feeding roller and a first opening are arranged at the bottom of the first slope structure, and metal powder is conveyed to the powder feeding assembly at a constant speed through rotation of the first powder feeding roller.
11. The dot matrix powder spreading 3D printing device based on resistance heating according to claim 10, wherein the powder feeding assembly has a horn-shaped receiving end and a buffer chamber communicated with the receiving end, the receiving end is fixedly mounted at the top of the movable support and used for receiving the metal powder conveyed from the storage bin, a second slope structure is formed inside the buffer chamber, a second powder feeding roller and a second opening are arranged at the bottom of the second slope structure, and the second powder feeding roller rotates to convey the metal powder to the partition plate at a constant speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920796322.XU CN210023772U (en) | 2019-05-30 | 2019-05-30 | Dot-matrix powder laying 3D printing device based on resistance heating |
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| CN201920796322.XU CN210023772U (en) | 2019-05-30 | 2019-05-30 | Dot-matrix powder laying 3D printing device based on resistance heating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153411A (en) * | 2019-05-30 | 2019-08-23 | 南京尚吉智能装备科技有限公司 | Dot matrix powdering 3D printing device and Method of printing based on resistance heating |
| CN112264620A (en) * | 2020-11-07 | 2021-01-26 | 齐齐哈尔金车工业有限责任公司 | Simple 3D printing system with selective resistance heating |
-
2019
- 2019-05-30 CN CN201920796322.XU patent/CN210023772U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153411A (en) * | 2019-05-30 | 2019-08-23 | 南京尚吉智能装备科技有限公司 | Dot matrix powdering 3D printing device and Method of printing based on resistance heating |
| CN110153411B (en) * | 2019-05-30 | 2024-04-05 | 南京尚吉智能装备科技有限公司 | Dot matrix type powder paving 3D printing device and printing method based on resistance heating |
| CN112264620A (en) * | 2020-11-07 | 2021-01-26 | 齐齐哈尔金车工业有限责任公司 | Simple 3D printing system with selective resistance heating |
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