CN108515183A - A kind of metal 3D printing device - Google Patents
A kind of metal 3D printing device Download PDFInfo
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- CN108515183A CN108515183A CN201810346955.0A CN201810346955A CN108515183A CN 108515183 A CN108515183 A CN 108515183A CN 201810346955 A CN201810346955 A CN 201810346955A CN 108515183 A CN108515183 A CN 108515183A
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Classifications
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- 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
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- 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
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
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- 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
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- 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
- B22F12/50—Means for feeding of material, e.g. heads
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- 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
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- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
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- 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
-
- 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)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Automation & Control Theory (AREA)
Abstract
The invention discloses a kind of metal 3D printing devices, including power spreading device, y-axis electric machine, video camera, longitudinal column, workbench, 3D printing head, x-axis electric machine, heel post, cross slide way, power supply module；Longitudinal column, right positions install video camera, the video camera, memory is installed in upper end, and camera, lower end installation video camera switch, the heel post are installed in front end, lower end is installed by sliding block two, the heel post, the upper end of longitudinal column and cross slide way；The left side of the x-axis electric machine is connected with x-axis limited block, is used for the position limitation protection of x-axis；The 3D printing head is mounted on by sliding block on horizontal column, and the 3D printing of metal is completed.The present invention is convenient with 3D printing, the characteristics of capable of completing metal material 3D printing, can generate good economic benefit and social benefit.
Description
Technical field
The invention belongs to mechanical engineering, computer control, CAD, Numeric Control Technology, laser material technology field, more specifically
Say, be related to a kind of metal 3D printing device.
Background technology
3D printing technique neither uses traditional machining tool and tool and mould, and the three-dimensional computer auxiliary according to workpiece is set
Meter（CAD）Model, under the control of the computer by free forming machine direct forming 3 D workpiece.3D printing technique is integrated with computer
The cutting edge technology of the diverse disciplines such as ancillary technique, Numeric Control Technology, material technology is a kind of typical new and high technology.3D printing skill
The basic principle of art is to carry out hierarchy slicing processing to CAD model using computer software, obtain the two-dimensional silhouette of each bed boundary
Information generates G-code control routines according to profile information, and fast forming machine is formed according to control command, stratified sedimentation material
A series of two dimension interfaces lamella, last fast forming machine makes to be mutually bonded between lamella and lamella, these lamellas are gradual
It is piled into 3 D workpiece entity.Since processing and manufacturing method is by three-dimensional to two-dimensional conversion, the forming of workpiece is set to become simplified, only
The working hour of traditional machining 30% and 50% cost are needed, complicated 3 D workpiece is just directly made, draws in machinery manufacturing industry
Huge repercussion is played.
As a kind of subversive technology, subversiveness is not only embodied in the promotion to traditional manufacture for 3D printing, and
And the original industry of a batch completely newly will be formed in some emerging fields.The skin printing skill researched and developed such as some current mechanisms
Art, since skin is compared to the other organs of human body, structure is more simple, and recyclability is stronger, thus, it is expected that will move towards earlier
Extensive use.If the technology can be popularized, traditional anti-aging, skin-grafting technology and beautifying technique will be overturned completely,
Other further includes 3D printing service and design platform, such as personalized customization of individual consumer's goods, including house, automobile, aircraft etc.
Field also by Perfect Reconstruction, forms the new original industry of a batch.The mankind only need to possess a 3D printer, in addition complete production
Product design profile can print oneself desired thing, not only facilitate but also quick, and many costs are saved for people.
3D printing technique is commonly called as rapid prototyping technology, also known as rapid prototyping manufacturing (Rapid Prototyping
Manufacturing, abbreviation RPM) technology, it is a kind of high-new manufacturing technology based on material stacking method, it is considered to be nearly 20
A great achievement of manufacturing field over year.3D printing（3Dprinting）It is that manufacture field rapidly developing one is new
Emerging technology is referred to as " manufacturing technology with industrial revolution meaning ".The main flow produced with the technology is：Using
Computer software designs three-dimensional processing pattern, then passes through specific former（It is commonly called as " 3D printer "）, use liquid
Change, powdered, silk solid material successively " print " and go out product.3D printing is " increasing material manufacturing "
（AdditiveManufacturing）Main way of realization.
3D printing technique there are the problem of：
Any one product should all have functionality, and now due to being limited by factors such as materials, be produced by 3D printing
The product come will put a question mard on practicability.
（1）, strength problem：Whether house, car " can no doubt print " out, but can keep out to live wind and rain, if can be
It smoothly runs in road；
（2）, precision problem：Since Layered manufacturing has " step effect ", although each level is very thin, in certain micro-scale
Under, it can still be formed with certain thickness level-one grade " step ", the subject surface if necessary to manufacture is arc-shaped, then will
Cause the deviation in precision；
（3）, material limitation：The material used at present for 3D printer is very limited, nothing more than gypsum, inorganic powder, light
Quick resin, plastics etc..The material that can be applied to 3D printing is still very single, and based on plastics, and printer is to single material
Material is also very fastidious.
3D printer moulds manufacture article unlike conventionally manufactured machine by cutting or mold.Pass through layer upon layer shape
The range of digital concept is expanded from the angle of physics at the method for physical item.For require accurate inner recess or
The shape of interlocking portions designs, and 3D printer is the process equipment of first choice, it can be real in entity world by such design
It is existing.Here is that the people from industry-by-industry, with different background and level professional technology is described with similar mode, 3D printing side
Them are helped to reduce prime cost, time and complicated sexual dysfunction.We come together to have a look which advantage 3D printing has.
The dominant tradition manufacturing industry of 3D printing can not reach
Advantage 1：Manufacture complex article does not increase cost
For conventionally manufactured, body form is more complicated, and manufacturing cost is higher.For 3D printer, manufacture is complex-shaped
Item Cost does not increase, and one magnificent complex-shaped article of manufacture is more unlike one simple square consumption of printing
Time, technical ability or cost.Manufacture complex article will break traditional pricing model without increasing cost, and changes us and calculate system
Cause this mode.
Advantage 2：Product diversification does not increase cost
One 3D printer can print many shapes, it can make article of different shapes every time as craftsman.It passes
The manufacturing equipment function of system is less, and the shape type made is limited.3D printing eliminates training machinist or purchases new equipment
Cost, a 3D printer only need different Digital Design blueprints and a collection of new raw material.
Advantage 3：It need not assembling
3D printing can be such that part integration is molded.Traditional large-scale production is established on the basis of assembly line, in modern factories, machine
Device produces identical parts, then by robot or worker（Even across continent）Assembling.Product form component is more, assembling consumption
The time and cost taken are more.3D printer can print Yishanmen and mating hinge above simultaneously by Layered manufacturing,
It need not assemble.It omits assembling and just shortens supply chain, save the cost in terms of labour and transport.Supply chain is shorter, dirty
Dye is also fewer.
Advantage 4：Zero-time delivers
3D printer can be with print on demand.Immediately production reduces the physical holding of stock of enterprise, and enterprise can make according to customer order
Special or customization product is produced with 3D printer to meet customer need, so new business model will be possibly realized.Such as
Article needed for fruit people produces nearby on demand, and the zero-time delivers formula production can reduce the cost of long-distance transport to the maximum extent.
Advantage 5：Design space is unlimited
Traditional manufacturing technology and the shape of product of craftsman's manufacture are limited, and the ability for manufacturing shape is limited by used tool.Example
Such as, traditional wooden lathe can only manufacture Circular article, and milling train can only process the component assembled with milling cutter, and moulding machine is only capable of manufacturing
Mold shape.3D printer can break through these limitations, open up huge design space, it might even be possible to which making may be deposited only at present
It is the shape of nature.
Ten big advantages of printing and five big challenges
Advantage 6：Zero technical ability manufactures
Traditional craftsman needs that as several years apprentices required technical ability could be grasped.The manufacture machine of batch production and computer control
The requirement to technical ability is reduced, however there is still a need for skilled practitioners to carry out machine adjustment and school for traditional manufacture machine
It is accurate.3D printer obtains various instructions in design document, does the article of same complexity, the required operative skill of 3D printer
It is fewer than injection molding machine.Non- technical ability manufacture opens new business model, and can be provided for people under remote environment or extreme case
The new mode of production.
Advantage 7：It does not take up space, portable manufacture
For production of units space, compared with conventionally manufactured machine, the manufacturing capacity of 3D printer is stronger.For example, injection molding machine
The article more much smaller than itself can only be manufactured, in contrast, 3D printer can manufacture big article as its stamp pad.3D
After printer is debugged, printing device can move freely, and printer can manufacture the article also bigger than itself.Higher list
Bit space production capacity makes 3D printer suitable for home use or office uses, because the physical space needed for them is small.
Advantage 8：Reduce waste by-product
Compared with traditional metal fabrication techniques, 3D printer generates less byproduct when manufacturing metal.Conventional metals are processed
Wastage it is surprising, 90% raw material metal is discarded in factory floor.Wastage is reduced when 3D printing manufactures metal.With
The progress of printed material, " net forming " manufacture is likely to become more environmentally friendly processing method.
Advantage 9：Material endless combinations
For current manufacture machine, it is part difficult matter that different raw material, which are combined into single product, because of traditional manufacturing machine
A variety of raw material cannot be merged by device easily in cutting or die molding process.With more material 3D printing techniques
Development, we have the ability different raw material are merged.New material will be formed after the raw material mixing that can not be mixed in the past
Material, these material tone types are various, have the function of unique attribute or.
Advantage 10：Accurate physical replication
Digital music file can ceaselessly be replicated, and audio quality can't decline.Numerical accuracy is expanded in future, 3D printing
Open up entity world.Scanning technique and 3D printing technique will improve point of modality conversion between entity world and digital world jointly
Resolution, we can scan, edit and replication entity object, create accurate copy or optimization original paper.
Above section advantage has been confirmed at present, and others can be in following ten or twenty year（Or 30 years）As existing
It is real.3D printing breaches original known time-honored conventionally manufactured limitation, and stage is provided for later innovation.
The challenge of 3D printing is at industry development bottleneck
As all new technologies, the shortcomings that 3D printing technique also has oneself, they can become on 3D printing technique way for development
Stumbling-block, to influence it grow up speed.
Perhaps, 3D printing may really bring some changes to the world, but if wanting to be the mainstream in market it is necessary to overcome
Various worries and issuable negative effect.
, material limitation
Examine some articles and the equipment around you, you it finds that 3D printing first stumbling-block, that is, it is required
The limitation of material.Although plastics, certain metals or ceramics printing may be implemented in high-end industry printing, it cannot achieve beat at present
The material of print is all more expensive and rare.
In addition, present printer can not support us to be connect in daily life also there are no ripe level is reached
The various materials contacted.
Researchers have been achieved for certain progress on more file printings, but unless these progress reach ripe and have
Effect, otherwise material can be still a big obstacle of 3D printing.
, machine limitation
It is well known that 3D printing will become mainstream technology (as a kind of big technology of consumption), its requirement to machine is also not
Low, complexity is also well imagined.
Current 3D printing technique has been obtained for certain level in the geometry and function for rebuilding object, almost
The shape of any static state can be printed, but the object of those movements and their clarity are just difficult to realize.
This difficulty may is that soluble for manufacturers, but 3D printing technique wants to enter into common family
Front yard, everyone can arbitrarily print desired thing, then the limitation of machine must be just resolved.
, intellectual property worry
In in the past few decades, more and more is become to the concern of intellectual property in music, film and television industries.3D printing
Technology unquestionably can also be related to this problem, because many things in reality can all obtain more widely propagating.
People can arbitrarily replicate anything, and quantity is unlimited.The laws and regulations for how formulating 3D printing are used for protecting
One of intellectual property and our problems faceds are protected, the phenomenon that spreading unchecked otherwise just is will appear.
, morals challenge
Morals are baselines.Which type of thing can be offensive to morality rule, we are difficult to define, if someone prints biology
Organ or living tissue, if against morals.How we again is handled if changing.If solution, phase can not be found as early as possible
Greatly morals challenge can be encountered by believing us in the near future.
, spend undertake
3D printing technique need the cost that undertakes be it is high, it is even more so for ordinary populace.Such as mentioned above
The price of one 3D printer in Jingdone district restocking is 10,000 5, and how many people is ready to spend this price to attempt this new skill
Art, perhaps only fans.
If it is intended to spreading to masses, price reduction is necessary, but can be formed and be conflicted with cost.This how is solved to ask
Topic, manufacturers estimate to want headache.
Each new technology birth initial stage can all be faced with these similar obstacles, but believe and find rational solution
The development of 3D printing technique will be more rapid, the same just as any Rendering software, be continuously updated can be only achieved it is final
It is perfect.
Therefore, it is necessary to study a kind of metal 3D printing devices, realize the printing of metal 3D.
In recent years, metal 3D printing device is greatly improved, but traditional 3D printer device, exists with next
A little disadvantages：
（One）, traditional metal 3D printing device use power spreading device, y-axis electric machine, video camera, longitudinal column, work
Make platform, 3D printing head, x-axis electric machine, heel post, cross slide way, power supply module, complicated, the effect of metal 3D printing
Rate is low；
（Two）, traditional metal 3D printing device do not use x-axis electric machine, more without using x-axis limited block, x-axis silk
Thick stick, x-axis driver, x-axis servo motor, x-axis sliding axle connector block, cannot complete the movement of x-axis；Also without using y-axis motor
Device, more that using y-axis servo motor, y-axis driver, y-axis leading screw, y-axis limited block, the movement of y-axis cannot do not completed；
（Three）, traditional metal 3D printing device do not use power spreading device, the 3D printing powdering movement of metal cannot be completed,
3D printing effect is bad.
In addition, the Chinese patent of the patent ZL 2016200650292 of applicant Zhang Wanjun, entitled：It is a kind of simple
The 3D printing ejecting device of type comprising：Slowspeed machine, extrusion mechanism, coupling arrangement, glass tube volume, heating module, installation
ABS printed materials, 3D printing nozzle；The slowspeed machine connects with extrusion mechanism, and the extrusion mechanism includes extruder
Structure body, guide pipe squeeze out wheel, and the extrusion mechanism further includes supporting rack, extrusion mechanism and the branch that supporting rack is total
Support member, for installing slowspeed machine；Coupling arrangement connects with extrusion mechanism, and fan, radiator are installed on coupling arrangement, is used for
The 3D printing ejecting device of simple type radiates；Also installation activity is fast on the coupling arrangement, for the heat dissipation on coupling arrangement
Device is movable back and forth；Glass tube volume connects with heating module, the heating of the 3D printing ejecting device for simple type.The present invention
Complete ABS part 3D printings, have the characteristics that simple in structure, easy to operate, cost is relatively low, good economic benefit can be generated
And social benefit.But the patent without describing power spreading device, y-axis electric machine, video camera, longitudinal column, workbench, 3D in detail
Print head, x-axis electric machine, heel post, cross slide way, the operation principle of power supply module and composition, cannot complete the 3D of metal
Printing.
Invention content
The present invention is to give a kind of metal 3D printing device to overcome above-mentioned deficiency.
Technical scheme is as follows：
A kind of metal 3D printing device, including power spreading device, y-axis electric machine, video camera, longitudinal column, workbench, 3D are beaten
Print head, x-axis electric machine, heel post, cross slide way, power supply module；Four workbench legs are installed in the workbench, lower end
Two side positions of foot, upper end install longitudinal column, heel post respectively, and longitudinal column, upper end is equipped with sliding block one, described
Longitudinal column, right positions install video camera, the video camera, and memory is installed in upper end, and camera, lower end peace are installed in front end
Fill video camera switch, the heel post, sliding block two is installed in lower end, the heel post, longitudinal column upper end led with lateral
Rail；The left side of the x-axis electric machine is connected with x-axis limited block, is used for the position limitation protection of x-axis；The 3D printing
Head by sliding block be mounted on horizontal column on, the sliding block lower end be connected with it is askew turn head, an askew lower end of turning is connected with 3D
Print bar, the 3D printing bar are the 3D printing bar of cylinder, and the 3D printing bar is connected to heating module, the heating
Module, is used for the preheating of 3D printing head, and the heating module lower end is connected with 3D printing head plated film, 3D printing head plating
On the one hand film prevents the temperature of 3D printing head too high, protect 3D printing nozzle；On the other hand, it is equal that 3D metallic print devices are used for
The 3D printing of metal is completed in even printing.
Further, the x-axis electric machine includes x-axis limited block, x-axis leading screw, x-axis driver, x-axis servo electricity
Machine, x-axis sliding axle connector block.
Further, the x-axis sliding axle connector block is connected by bolt with heel post.
Further, the x-axis sliding axle connector block is connected with x-axis servo motor, and the servo for completing x-axis is transported
It is dynamic.
Further, the left side x-axis driver of the x-axis servo motor, the drive motion for completing x-axis.
Further, the x-axis driver, left side are connected with x-axis leading screw.
Further, the y-axis electric machine includes y-axis servo motor, y-axis driver, y-axis leading screw, y-axis limit
Block.
Further, the y-axis servo motor, lower end install y-axis driver, complete the drive motion of y-axis.
Further, y-axis leading screw is installed in the y-axis driver, lower end.
Further, y-axis limited block is installed in the y-axis leading screw, lower end, completes the y-axis position limitation protection of metal 3D printing.
Further, the power spreading device, lower end are fixed on by supporting rack on cross slide way；
Further, powdering case is installed in the power spreading device, upper end.
Further, the powdering case, centre are equipped with powdering hole.
Further, the powdering case, centre are equipped with powdering hole；The upper end of the powdering case is equipped with laser and shakes
Mirror；The laser galvanometer ensures that metal 3D printing device quickly and accurately prints for laser irradiation power spreading device.
Further, the left side of the powdering case is equipped with fixing end.
Further, the fixing end is screwed on horizontal column.
Further, the right side of the powdering case is equipped with powder feeding case.
Further, the powder feeding case is the powder feeding case of rectangular metal, and quantity is two；The left side of the powdering case
Symmetric position installs a powder feeding case, is used for the quick powder feeding of 3D printing.
Further, the power supply module is mounted on cross slide way；
Further, the power supply module includes power module, charging unit, and the power module is power supply module
Core is for electric installation.
Compared with prior art, the present invention haing the following advantages and high-lighting effect：
One, a kind of metal 3D printing device of piecemeal combined type for using of the present invention, including power spreading device, y-axis electric machine, take the photograph
Camera, longitudinal column, workbench, 3D printing head, x-axis electric machine, heel post, cross slide way, power supply module；The work
Four workbench legs and feet are installed in platform, lower end, and two side positions of upper end install longitudinal column, heel post respectively, and the longitudinal direction is vertical
Column, upper end are equipped with sliding block one, longitudinal column, and right positions install video camera, the video camera, upper end installation storage
Camera, lower end installation video camera switch, the heel post are installed in device, front end, and sliding block two is installed in lower end, and described is edge-on
Column, the upper end of longitudinal column and cross slide way；The left side of the x-axis electric machine is connected with x-axis limited block, is used for x
The position limitation protection of axis；The 3D printing head by sliding block be mounted on horizontal column on, the sliding block lower end be connected with it is askew turn head,
An askew lower end of turning is connected with 3D printing bar, and the 3D printing bar is the 3D printing bar of cylinder, the 3D printing
Bar is connected to heating module, and the heating module is used for the preheating of 3D printing head, and the heating module lower end is connected with 3D and beats
Head plated film is printed, on the one hand the 3D printing head plated film prevents the temperature of 3D printing head too high, protect 3D printing nozzle；It is another
Aspect is used for 3D metallic print device surfaces, completes the 3D printing of metal.
Two, the x-axis electric machine that the present invention uses includes x-axis limited block, x-axis leading screw, x-axis driver, x-axis servo electricity
Machine, x-axis sliding axle connector block；The x-axis sliding axle connector block is connected by bolt with heel post；The x-axis sliding
Shaft coupling block is connected with x-axis servo motor, the servo motion for completing x-axis；The left side x-axis of the x-axis servo motor
Driver, the drive motion for completing x-axis, the x-axis driver, left side is connected with x-axis leading screw；The y-axis electricity
Machine device includes y-axis servo motor, y-axis driver, y-axis leading screw, y-axis limited block；Y is installed in the y-axis servo motor, lower end
Axis driver completes the drive motion of y-axis；Y-axis leading screw is installed in the y-axis driver, lower end；The y-axis leading screw, lower end
Y-axis limited block is installed, the y-axis position limitation protection of metal 3D printing is completed.
Three, the power spreading device that the present invention uses, lower end is fixed on by supporting rack on cross slide way；The powdering dress
It sets, powdering case is installed in upper end；The powdering case, centre are equipped with powdering hole；The powdering case, centre are equipped with powdering hole；Institute
The upper end for the powdering case stated is equipped with laser galvanometer；The laser galvanometer ensures metal 3D for laser irradiation power spreading device
Printing equipment quickly and accurately prints；The left side of the powdering case is equipped with fixing end；The fixing end is screwed
On horizontal column；The right side of the powdering case is equipped with powder feeding case；The powder feeding case is the powder feeding case of rectangular metal, and quantity is
Two；The left side symmetric position of the powdering case installs a powder feeding case, is used for the quick powder feeding of 3D printing.
Four, the power supply module that the present invention uses is mounted on cross slide way；The power supply module includes power module, fills
Electric installation, the power module is the core of power supply module for electric installation.
In addition to the above, the present invention has the characteristics that following compared with other metal 3D printing devices：
（1）, 3D printing head be mounted on horizontal column by sliding block, the sliding block lower end be connected with it is askew turn head, it is described askew to turn
Head lower end is connected with 3D printing bar, and the 3D printing bar is the 3D printing bar of cylinder, and the 3D printing bar is connected to heating
Module, the heating module are used for the preheating of 3D printing head, and the heating module lower end is connected with 3D printing head plated film,
The 3D printing head plated film, on the one hand prevents the temperature of 3D printing head too high, protects 3D printing nozzle；On the other hand, it is used for
3D metallic print device surfaces, complete the 3D printing of metal, have simple in structure, printing conveniently；
（2）, power spreading device, lower end is fixed on by supporting rack on cross slide way；Powdering is installed in the power spreading device, upper end
Case；The powdering case, centre are equipped with powdering hole；The powdering case, centre are equipped with powdering hole；The upper end of the powdering case
Laser galvanometer is installed；The laser galvanometer ensures metal 3D printing device quickly, accurately for laser irradiation power spreading device
Ground prints；The left side of the powdering case is equipped with fixing end；The fixing end is screwed on horizontal column；Described
The right side of powdering case is equipped with powder feeding case；The powder feeding case is the powder feeding case of rectangular metal, and quantity is two；The powdering case
Left side symmetric position one powder feeding case is installed, be used for the quick powder feeding of 3D printing
（3）, the present invention be equipped with x-axis limited block, x-axis leading screw, x-axis driver, x-axis servo motor, x-axis sliding axle connector block and y
Axis servo motor, y-axis driver, y-axis leading screw, y-axis limited block have simple in structure, printing conveniently, can complete metal material 3
The characteristics of D is printed, can generate good economic benefit and social benefit.
Further advantage, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The objects and other advantages of the present invention can be wanted by following specification and right
Book is sought to realize and obtain.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of metal 3D printing device of the present invention；
Mark in Fig. 1：
1, supporting rack,
2, powdering hole,
3, powdering case,
4, power spreading device,
5, y-axis electric machine,
6, y-axis servo motor,
7, y-axis driver,
8, y-axis leading screw,
9, y-axis limited block,
10, memory,
11, video camera,
12, camera,
13, video camera switchs,
14, sliding block one,
15, longitudinal column,
16, workbench,
17, workbench legs and feet,
18,3D printing head,
19, worm screw is driven,
20, supporting rack,
21, x-axis leading screw,
22, x-axis driver,
23, x-axis servo motor,
24, x-axis sliding axle connector block,
25, x-axis electric machine,
26, sliding block two,
27, heel post,
28, cross slide way,
29, power supply module,
30, power module,
31, charging unit；
32, powder feeder unit.
Fig. 1 is the structural schematic diagram of powdering case in a kind of metal 3D printing device of the present invention；
Mark in Fig. 2：
33, fixing end,
34, laser galvanometer,
35, powder feeding case.
Fig. 3 is the structural schematic diagram of 3D printing head in a kind of metal 3D printing device of the present invention；
Mark in Fig. 3：
36, sliding block,
37, horizontal column,
It is 38, askew to turn head,
39,3D printing bar,
40, heating module,
41,3D printing head plated film.
Fig. 4 is the flow chart for the process that a kind of metal 3D printing device of the present invention realizes metal material 3D printing.
Specific implementation mode
Embodiment 1
In order that those skilled in the art will better understand the technical solution of the present invention, and make the above-mentioned purpose of the present invention, spy
Advantage of seeking peace can be more obvious and easy to understand, and below in conjunction with the accompanying drawings 1 to attached drawing 3, illustrate that still, the present invention is simultaneously unlimited for embodiment
In following embodiments, the present invention and embodiments thereof are described in further detail.
A kind of metal 3D printing device, including power spreading device 4, y-axis electric machine 5, video camera 11, longitudinal column 15, work
Make platform 16,3D printing head 18, x-axis electric machine 25, heel post 27, cross slide way 28, power supply module 29；The workbench
16, four workbench legs and feet 17 are installed in lower end, and two side positions of upper end install longitudinal column 15, heel post 27 respectively, described
Longitudinal column 15, upper end are equipped with sliding block 1, longitudinal column 15, and right positions install video camera 11, the camera shooting
Memory 10 is installed in machine 11, upper end, and camera 12 is installed in front end, video camera switch 13 is installed in lower end, the heel post 27, under
End installation sliding block 2 26, the heel post 27, the upper end of longitudinal column 15 and cross slide way 28；The x-axis electric machine
25 left side is connected with x-axis limited block 20, is used for the position limitation protection of x-axis；The 3D printing head 18 is pacified by sliding block 36
On horizontal column 37,36 lower end of sliding block be connected with it is askew turn first 38, it is described askew to turn first 38 lower end and be connected with 3D printing
Bar 39, the 3D printing bar 39 are the 3D printing bar of cylinder, and the 3D printing bar 39 is connected to heating module 40, described
Heating module 40 is used for the preheating of 3D printing head 18, and 40 lower end of heating module is connected with 3D printing head plated film 41, described
3D printing head plated film 41, on the one hand prevent the temperature of 3D printing head too high, protect 3D printing nozzle；On the other hand, it is used for 3D
Metallic print device surface, completes the 3D printing of metal.
Also, a kind of metal 3D printing device of piecemeal combined type that the present invention uses, including power spreading device, y-axis motor dress
It sets, video camera, longitudinal column, workbench, 3D printing head, x-axis electric machine, heel post, cross slide way, power supply module；It is described
Workbench, lower end installs four workbench legs and feet, and two side positions of upper end installs longitudinal direction column, heel post respectively, described
Longitudinal column, upper end are equipped with sliding block one, longitudinal column, and right positions install video camera, the video camera, upper end peace
Camera, lower end installation video camera switch are installed in device, memory, front end, and the heel post, sliding block two is installed in lower end, described
Heel post, the upper end of longitudinal column and cross slide way；The left side of the x-axis electric machine is connected with x-axis limited block, uses
In the position limitation protection of x-axis；The 3D printing head is mounted on by sliding block on horizontal column, and the sliding block lower end is connected with askew turn
Head, an askew lower end of turning are connected with 3D printing bar, and the 3D printing bar is the 3D printing bar of cylinder, and the 3D is beaten
Print bar is connected to heating module, and the heating module is used for the preheating of 3D printing head, and the heating module lower end is connected with 3D
Print head plated film, the 3D printing head plated film, on the one hand prevents the temperature of 3D printing head too high, protects 3D printing nozzle；Separately
On the one hand, 3D metallic print device surfaces are used for, the 3D printing of metal is completed, there is simple in structure, printing conveniently, be this
One distinguishing feature of invention.
In detail, the powder feeder unit 32 is rectangle powder feeder unit, by reaching 3D printing by sliding block 36 for tube cell
First 18, complete the 3D printing of metal.
It is further used as preferred embodiment, the x-axis electric machine 25 includes x-axis limited block 20, x-axis leading screw
21, x-axis driver 22, x-axis servo motor 23, x-axis sliding axle connector block 24.
It is further used as preferred embodiment, the x-axis sliding axle connector block 24 passes through bolt and 27 phase of heel post
Connection.
It is further used as preferred embodiment, the x-axis sliding axle connector block 24 is connected with x-axis servo motor 23
It connects, the servo motion for completing x-axis.
It is further used as preferred embodiment, the left side x-axis driver 22 of the x-axis servo motor 23 has been used for
At the drive motion of x-axis.
It is further used as preferred embodiment, the x-axis driver 22, left side is connected with x-axis leading screw 21.
It is further used as preferred embodiment, the y-axis electric machine 5 includes y-axis servo motor 6, y-axis driver
7, y-axis leading screw 8, y-axis limited block 9.
It is further used as preferred embodiment, the y-axis servo motor 6, y-axis driver 7 is installed in lower end, completes y
The drive motion of axis.
It is further used as preferred embodiment, the y-axis driver 7, y-axis leading screw 8 is installed in lower end.
It is further used as preferred embodiment, the y-axis leading screw 8, y-axis limited block 9 is installed in lower end, completes metal 3D
The y-axis position limitation protection of printing.
Also, the x-axis electric machine that the present invention uses includes x-axis limited block, x-axis leading screw, x-axis driver, x-axis servo electricity
Machine, x-axis sliding axle connector block；The x-axis sliding axle connector block is connected by bolt with heel post；The x-axis sliding
Shaft coupling block is connected with x-axis servo motor, the servo motion for completing x-axis；The left side x-axis of the x-axis servo motor
Driver, the drive motion for completing x-axis, the x-axis driver, left side is connected with x-axis leading screw；The y-axis electricity
Machine device includes y-axis servo motor, y-axis driver, y-axis leading screw, y-axis limited block；Y is installed in the y-axis servo motor, lower end
Axis driver completes the drive motion of y-axis；Y-axis leading screw is installed in the y-axis driver, lower end；The y-axis leading screw, lower end
Y-axis limited block is installed, the y-axis position limitation protection of metal 3D printing is completed, and is the distinguishing feature of the present invention.
It is further used as preferred embodiment, the power spreading device 4, lower end is fixed on by supporting rack 1 and is laterally led
On rail 28.
It is further used as preferred embodiment, the power spreading device 4, powdering case 3 is installed in upper end.
It is further used as preferred embodiment, the powdering case 3, centre is equipped with powdering hole 2.
It is further used as preferred embodiment, the powdering case 3, centre is equipped with powdering hole 2；The powdering case 3
Upper end laser galvanometer 34 is installed；The laser galvanometer 34 ensures metal 3D printing dress for laser irradiation power spreading device 4
It sets and quickly and accurately prints.
It is further used as preferred embodiment, the left side of the powdering case 3 is equipped with fixing end 33.
It is further used as preferred embodiment, the fixing end 33 is screwed on horizontal column 37.
It is further used as preferred embodiment, the right side of the powdering case 3 is equipped with powder feeding case 35.
It is further used as preferred embodiment, the powder feeding case 35 is the powder feeding case of rectangular metal, and quantity is two；
The left side symmetric position of the powdering case 3 installs a powder feeding case, is used for the quick powder feeding of 3D printing.
Also, the power spreading device that the present invention uses, lower end are fixed on by supporting rack on cross slide way；The powdering dress
It sets, powdering case is installed in upper end；The powdering case, centre are equipped with powdering hole；The powdering case, centre are equipped with powdering hole；Institute
The upper end for the powdering case stated is equipped with laser galvanometer；The laser galvanometer ensures metal 3D for laser irradiation power spreading device
Printing equipment quickly and accurately prints；The left side of the powdering case is equipped with fixing end；The fixing end is screwed
On horizontal column；The right side of the powdering case is equipped with powder feeding case；The powder feeding case is the powder feeding case of rectangular metal, and quantity is
Two；The left side symmetric position of the powdering case installs a powder feeding case, is used for the quick powder feeding of 3D printing, and be of the invention
One distinguishing feature.
It is further used as preferred embodiment, the power supply module 29 is mounted on cross slide way 28.
It is further used as preferred embodiment, the power supply module 29 includes power module 30, charging unit 31, institute
The power module 30 stated is the core of power supply module 29 for electric installation.
Also, the power supply module that the present invention uses is mounted on cross slide way；The power supply module includes power module, fills
Electric installation, the power module, be power supply module core for electric installation, and be the present invention a distinguishing feature.
Embodiment 2
A kind of metal 3D printing device realizes the process of metal material 3D printing, as shown in figure 4, powering including power supply module；Work
Make platform movement；Power spreading device works；Y-axis electric machine moves；X-axis electric machine moves；Camera photography；3D printing head work
Make；Judge whether the 3D printing of completion metal material；Complete the following steps such as the printing of 3D of metal material；
Step1, power supply module power supply；
Step2, working table movement；
Step3, power spreading device work, specifically include following steps：
（1）, load onto metal 3D printing powder in powdering case；
（2）, powdering hole open.
Step4, the movement of y-axis electric machine, specifically include following steps：
（1）, y-axis limited block movement；
（2）, y-axis guide screw movement；
（3）, y-axis driver movement；
（4）, y-axis servo motor rotation.
Step5, the movement of x-axis electric machine, specifically include following steps：
（1）, x-axis limited block movement；
（2）, x-axis guide screw movement；
（3）, x-axis driver movement；
（4）, x-axis servo motor rotation；
（5）, x-axis sliding axle connector block movement.
Step6, camera photography, specifically include following steps：
（1）, video camera switch open；
（2）, camera camera shooting；
（3）, memory storage metal 3D printing process.
Step7, the work of 3D printing head；
Step8, judge whether to complete the 3D printing of metal material：
Situation one：If not completing the 3D printing of metal material, one is thened follow the steps, power supply module power supply；
Situation two：If completing the 3D printing of metal material, Step9 is executed, the printing of the 3D of metal material is completed；
Step9, complete metal material 3D printing.
The present invention has the characteristics that following compared with other metal 3D printing devices：
（1）, 3D printing head be mounted on horizontal column by sliding block, the sliding block lower end be connected with it is askew turn head, it is described askew to turn
Head lower end is connected with 3D printing bar, and the 3D printing bar is the 3D printing bar of cylinder, and the 3D printing bar is connected to heating
Module, the heating module are used for the preheating of 3D printing head, and the heating module lower end is connected with 3D printing head plated film,
The 3D printing head plated film, on the one hand prevents the temperature of 3D printing head too high, protects 3D printing nozzle；On the other hand, it is used for
3D metallic print device surfaces, complete the 3D printing of metal, have simple in structure, printing conveniently；
（2）, power spreading device, lower end is fixed on by supporting rack on cross slide way；Powdering is installed in the power spreading device, upper end
Case；The powdering case, centre are equipped with powdering hole；The powdering case, centre are equipped with powdering hole；The upper end of the powdering case
Laser galvanometer is installed；The laser galvanometer ensures metal 3D printing device quickly, accurately for laser irradiation power spreading device
Ground prints；The left side of the powdering case is equipped with fixing end；The fixing end is screwed on horizontal column；Described
The right side of powdering case is equipped with powder feeding case；The powder feeding case is the powder feeding case of rectangular metal, and quantity is two；The powdering case
Left side symmetric position one powder feeding case is installed, be used for the quick powder feeding of 3D printing；
（3）, the present invention be equipped with x-axis limited block, x-axis leading screw, x-axis driver, x-axis servo motor, x-axis sliding axle connector block and y
Axis servo motor, y-axis driver, y-axis leading screw, y-axis limited block have simple in structure, printing conveniently, can complete metal material 3
The characteristics of D is printed, can generate good economic benefit and social benefit.
The distinguishing feature of the present invention：
1）, a kind of metal 3D printing device of piecemeal combined type for using of the present invention, including power spreading device, y-axis electric machine, take the photograph
Camera, longitudinal column, workbench, 3D printing head, x-axis electric machine, heel post, cross slide way, power supply module；The work
Four workbench legs and feet are installed in platform, lower end, and two side positions of upper end install longitudinal column, heel post respectively, and the longitudinal direction is vertical
Column, upper end are equipped with sliding block one, longitudinal column, and right positions install video camera, the video camera, upper end installation storage
Camera, lower end installation video camera switch, the heel post are installed in device, front end, and sliding block two is installed in lower end, and described is edge-on
Column, the upper end of longitudinal column and cross slide way；The left side of the x-axis electric machine is connected with x-axis limited block, is used for x
The position limitation protection of axis；The 3D printing head by sliding block be mounted on horizontal column on, the sliding block lower end be connected with it is askew turn head,
An askew lower end of turning is connected with 3D printing bar, and the 3D printing bar is the 3D printing bar of cylinder, the 3D printing
Bar is connected to heating module, and the heating module is used for the preheating of 3D printing head, and the heating module lower end is connected with 3D and beats
Head plated film is printed, on the one hand the 3D printing head plated film prevents the temperature of 3D printing head too high, protect 3D printing nozzle；It is another
Aspect is used for 3D metallic print device surfaces, completes the 3D printing of metal.
2）, the x-axis electric machine that uses of the present invention include x-axis limited block, x-axis leading screw, x-axis driver, x-axis servo electricity
Machine, x-axis sliding axle connector block；The x-axis sliding axle connector block is connected by bolt with heel post；The x-axis sliding
Shaft coupling block is connected with x-axis servo motor, the servo motion for completing x-axis；The left side x-axis of the x-axis servo motor
Driver, the drive motion for completing x-axis, the x-axis driver, left side is connected with x-axis leading screw；The y-axis electricity
Machine device includes y-axis servo motor, y-axis driver, y-axis leading screw, y-axis limited block；Y is installed in the y-axis servo motor, lower end
Axis driver completes the drive motion of y-axis；Y-axis leading screw is installed in the y-axis driver, lower end；The y-axis leading screw, lower end
Y-axis limited block is installed, the y-axis position limitation protection of metal 3D printing is completed.
3）, the power spreading device that uses of the present invention, lower end is fixed on by supporting rack on cross slide way；The powdering dress
It sets, powdering case is installed in upper end；The powdering case, centre are equipped with powdering hole；The powdering case, centre are equipped with powdering hole；Institute
The upper end for the powdering case stated is equipped with laser galvanometer；The laser galvanometer ensures metal 3D for laser irradiation power spreading device
Printing equipment quickly and accurately prints；The left side of the powdering case is equipped with fixing end；The fixing end is screwed
On horizontal column；The right side of the powdering case is equipped with powder feeding case；The powder feeding case is the powder feeding case of rectangular metal, and quantity is
Two；The left side symmetric position of the powdering case installs a powder feeding case, is used for the quick powder feeding of 3D printing.
4）, the power supply module that uses of the present invention is mounted on cross slide way；The power supply module includes power module, fills
Electric installation, the power module is the core of power supply module for electric installation.
In addition to the implementation, the present invention can also have other embodiment.All equivalent substitution or equivalent transformation deformations
Technical solution, in the claimed scope of the invention.Of the invention is that many features of embodiment and advantage are retouched in detail according to this
It is clear to state, therefore appended claims are intended to cover these to be that falling into for embodiment is all in its true spirit and range
These feature and advantage.Further, since those skilled in the art is readily apparent that many modifications and changes, therefore it is not meant to this
Invention is that embodiment is limited to illustrated and description precision architecture and operation, but can cover and fall into owning within the scope of its
Suitable modifications and equivalent.
Unspecified part of the present invention is technology well known to the engineers and technicians of this field.
Claims (4)
1. a kind of metal 3D printing device, it is characterised in that：Including power spreading device（4）, y-axis electric machine（5）, video camera
（11）, longitudinal column（15）, workbench（16）, 3D printing head（18）, x-axis electric machine（25）, heel post（27）, cross slide way
（28）, power supply module（29）；The workbench（16）, four workbench legs and feet are installed in lower end（17）, two side positions of upper end
Longitudinal column is installed respectively（15）, heel post（27）, longitudinal column（15）, upper end is equipped with sliding block one（14）, described
Longitudinal column（15）, right positions installation video camera（11）, the video camera（11）, memory is installed in upper end（10）, front end
Camera is installed（12）, lower end installation video camera switch（13）, the heel post（27）, sliding block two is installed in lower end（26）, institute
The heel post stated（27）, longitudinal column（15）Upper end and cross slide way（28）；The x-axis electric machine（25）Left side with
X-axis limited block（20）It is connected, is used for the position limitation protection of x-axis；The 3D printing head（18）Pass through sliding block（36）It is mounted on
Horizontal column（37）On, the sliding block（36）Lower end, which is connected with, askew turns head（38）, described askew to turn head（38）Lower end is connected with 3D
Print bar（39）, the 3D printing bar（39）For cylindrical 3D printing bar, the 3D printing bar（39）It is connected to heated mould
Block（40）, the heating module（40）, it is used for 3D printing head（18）Preheating, the heating module（40）Lower end is connected with
3D printing head plated film（41）, the 3D printing head plated film（41）, on the one hand prevent the temperature of 3D printing head too high, protection 3D is beaten
Print nozzle；On the other hand, 3D metallic print device surfaces are used for, the 3D printing of metal is completed.
2. a kind of metal 3D printing device as described in right wants 1, it is characterised in that：
The x-axis electric machine（25）Including x-axis limited block（20）, x-axis leading screw（21）, x-axis driver（22）, x-axis servo
Motor（23）, x-axis sliding axle connector block（24）；
The x-axis sliding axle connector block（24）Pass through bolt and heel post（27）It is connected；
The x-axis sliding axle connector block（24）With x-axis servo motor（23）It is connected, the servo motion for completing x-axis；
The x-axis servo motor（23）Left side x-axis driver（22）, the drive motion for completing x-axis；
The x-axis driver（22）, left side and x-axis leading screw（21）It is connected；
The y-axis electric machine（5）Including y-axis servo motor（6）, y-axis driver（7）, y-axis leading screw（8）, y-axis limited block
（9）；
The y-axis servo motor（6）, y-axis driver is installed in lower end（7）, complete the drive motion of y-axis；
The y-axis driver（7）, y-axis leading screw is installed in lower end（8）；
The y-axis leading screw（8）, y-axis limited block is installed in lower end（9）, complete the y-axis position limitation protection of metal 3D printing.
3. a kind of metal 3D printing device as described in right wants 1, it is characterised in that：
The power spreading device（4）, lower end passes through supporting rack（1）It is fixed on cross slide way（28）On；
The power spreading device（4）, powdering case is installed in upper end（3）；
The powdering case（3）, centre is equipped with powdering hole（2）；
The powdering case（3）, centre is equipped with powdering hole（2）；The powdering case（3）Upper end laser galvanometer is installed
（34）；The laser galvanometer（34）, it is used for laser irradiation power spreading device（4）Ensure metal 3D printing device quickly and accurately
Printing；
The powdering case（3）Left side be equipped with fixing end（33）；
The fixing end（33）It is screwed in horizontal column（37）On；
The powdering case（3）Right side be equipped with powder feeding case（35）；
The powder feeding case（35）For the powder feeding case of rectangular metal, quantity is two；The powdering case（3）The symmetrical position in left side
One powder feeding case of installation is set, the quick powder feeding of 3D printing is used for.
4. a kind of metal 3D printing device as described in right wants 1, it is characterised in that：
The power supply module（29）Mounted on cross slide way（28）On；
The power supply module（29）Including power module（30）, charging unit（31）, the power module（30,）For power supply
Module（29）Core for electric installation.
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| CN201810346955.0A CN108515183A (en) | 2018-04-18 | 2018-04-18 | A kind of metal 3D printing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112107400A (en) * | 2020-09-23 | 2020-12-22 | 孟自力 | 3D printing equipment for preparing cardiovascular stent |
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2018
- 2018-04-18 CN CN201810346955.0A patent/CN108515183A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112107400A (en) * | 2020-09-23 | 2020-12-22 | 孟自力 | 3D printing equipment for preparing cardiovascular stent |
| CN112107400B (en) * | 2020-09-23 | 2024-03-29 | 孟自力 | 3D printing equipment for preparing cardiovascular stent |
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