CN207873130U - Metal 3D printer scraper - Google Patents
Metal 3D printer scraper Download PDFInfo
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- CN207873130U CN207873130U CN201820048238.5U CN201820048238U CN207873130U CN 207873130 U CN207873130 U CN 207873130U CN 201820048238 U CN201820048238 U CN 201820048238U CN 207873130 U CN207873130 U CN 207873130U
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- cutter hub
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- scrapes
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Abstract
The utility model is related to 3D printing technique field, a kind of metal 3D printer scraper is specifically disclosed, including first scrapes cutter hub and second and scrape cutter hub；Second, which scrapes cutter hub bottom, is provided with left knife, left knife one side is and the lozenges of acute angle is presented in horizontal plane, right knife is equipped with close to left knife one side and horizontal plane lozenges at an acute angle, left knife and right knife lower plane are in same plane, the cutter hub of scraping of the right knife side is equipped with vertical groove, the scraper body side surface of left knife side is equipped with lateral rib, first, which scrapes cutter hub bottom end, is provided with threaded hole, metal mesh is fixedly connected on threaded hole, scraping cutter hub with first in metal mesh the first scraper body of insertion is fixedly connected；Second scrapes and is provided on cutter hub for scraping the metal screw that cutter hub is used cooperatively with first, and metal mesh is fixedly connected on screw rod, and the metal mesh on screw rod, which is embedded in, to be scraped cutter hub with second in the second scraper body and be fixedly connected.
Description
Technical field
The utility model is related to 3D printing technique fields, specifically disclose a kind of metal 3D printer scraper.
Background technology
3D printing technique is a kind of method of metalwork straight forming, is the latest development of rapid shaping technique.The technology
Most basic thought based on rapid shaping, i.e. " increment " manufacture of successively cladding, have according to three-dimensional CAD model straight forming
The part of geometry in particular, metal powder is completely melt in forming process, generates metallurgical binding.
The forming process of 3D printing technique based on powdering mode is as follows：Power spreading device is laid with one layer of metal on formation cylinder
Powder, energy beam under the control of the computer, according to drip molding cross sectional shape information, are scanned powder, make in scanning area
Powder fusing, obtain drip molding single layer；Then formation cylinder declines the distance of a thickness, power spreading device powdering again, under continuing
One layer of forming；It is so successively superimposed, the final metal parts for obtaining geometry in particular.
In above-mentioned forming process, it is desirable that power spreading device uniformly, entirely can be layered on metal powder on formation cylinder, existing
Have in technology, powdering is generally carried out using scraper.Scraper can be divided into rigid scraper and flexible scraper according to the difference of scraper material
Two major classes.Wherein, rigid scraper is made using simple metal or ceramics, and flexible scraper is made of flexible materials such as silica gel.
It due in forming process, generally will produce powder convergence, and often will appear raised points on drip molding surface, adopt
Powdering is carried out with rigid scraper, when protrusion occurs in drip molding surface, scraper card is easy to happen and stops phenomenon, during forming process is forced
Only；Rigid scraper is substituted using flexible scraper, since flexible scraper has flexibility, can avoid scraping during powdering well
Knife occurs card and stops, and still, during carrying out powdering using flexible scraper, flexible scraper raised points are also held during touching
Easily leading to makes the powder of convergence splash, and the powder to splash in order to prevent leads to drip molding single layer out-of-flatness, in the prior art often
It is solved using scraper powdering number is increased, i.e., carries out secondary powdering or by two scrapers successively powdering using individually scraping, this
Powdering process will be caused to complicate.
In addition, compared to rigid scraper, though flexible scraper is not easy card and stops, flexible scraper is in continuous and raised point contact
Friction will be generated in the process causes scraper to be easily damaged, and the scraper damaged will also seriously affect powdering effect, can not be further continued for
It uses.
Utility model content
The utility model aim is to provide a kind of metal 3D printer scraper, to solve existing flexible scraper continuous
Lead to that scraper damage can not reuse and flexible scraper carries out powdering with friction will be generated during raised point contact
In the process, the powder problem of splashing leads to drip molding single layer out-of-flatness, cause powdering process complicate the problem of.
In order to achieve the above object, the base case of the utility model is：Metal 3D printer scraper, including first scrape
Cutter hub and second scrapes cutter hub；
Described second, which scrapes cutter hub bottom, is provided with left knife, and the left knife one side is and the wedge shape of acute angle is presented in horizontal plane
Face, described second scrapes the right knife that the left knife lozenges of face on cutter hub is less than left knife bottom thickness equipped with bottom thickness, the right knife
Close left knife one side is equipped with and horizontal plane lozenges at an acute angle, and the left knife and right knife lower plane are in same plane
The second of the right knife side scrapes cutter hub and is equipped with vertical groove, on the second scraper body side surface of the left knife side
Equipped with lateral rib, described first scrapes the threaded hole that cutter hub bottom end is provided with metal material, is fixedly connected on the threaded hole
Metal mesh, the metal mesh, which is embedded in, to be scraped cutter hub with first in the first scraper body and is fixedly connected；Described second scrapes and is provided on cutter hub
For scraping the metal screw that cutter hub is used cooperatively with first, metal mesh, the gold on the screw rod are fixedly connected on the screw rod
Cutter hub is scraped in the embedded second scraper body of category net with second to be fixedly connected.
The operation principle and effect of this base case are：When specifically used flexible blade, second scrapes cutter hub blade to the left
Side promotes, and when encountering the raised points on drip molding surface, left knife is by the raised point contact in elder generation and drip molding surface, then right knife
Secondary powdering is carried out immediately following left knife, compared with prior art, when the powder for generating splashing leads to drip molding single layer out-of-flatness, nothing
Other scrapers need to be used to carry out secondary powdering, be run again without running gear and the same scraper is driven to carry out secondary powdering,
Avoid the problem of powdering repeatedly causes powdering process to complicate；Flexible blade is made using materials such as silica gel, itself has soft
Property, and flexibility changes as the thickness and width of blade is different, right knife thickness is less than left knife thickness so that right knife flexibility is more than
Left knife, the right knife of flexible bigger are more not easy card when encountering the raised points on drip molding surface and stop and damage；
Since left knife first carries out powdering, the raised points probability that left knife encounters drip molding surface is greater than right knife, so right knife
Piece is hardly damaged under the action of left blade；When left breaks down, right blade can proceed with powdering, without stopping paving at once
Powder and replacement scraper；Flexible scraper, which would generally be installed in powdering in installs fixture, makes it act and realize with installs fixture
Powdering can increase by first by lateral rib and scrape friction between cutter hub and flexible scraper installs fixture, make flexible cutter installation more
Add stabilization, prevents flexible cutter from falling off from installs fixture；First scrapes after cutter hub is mounted on printer body due to clamped appearance
Easily flexible scraper is made to deform, vertical groove can play the role of compensation buffering, energy when installs fixture clamps flexible scraper
Reduce the degree of deformation of flexible scraper；
Setting first scrapes cutter hub and second and scrapes cutter hub on scraper, and second scrapes left knife and right knife are arranged on cutter hub, is carrying out
In use, if left knife and right knife serious wear need replacing, only needs to change second and scrape cutter hub and scrape cutter hub without replacing first；The
One, which scrapes cutter hub, can be used for printing body clamping, just be removed in this way without scraping cutter hub by first when cutter hub is scraped in replacement second, directly
Scraped from first and scrape cutter hub by second on cutter hub and remove replacement, make in this way after replacement scraper without on printer body from new
Cutter hub is scraped in installation；In addition, due to flexible scraper when scraping cutter hub and installing, due to scraping the flexibility of cutter hub so that scrape cutter hub
It is easy torsional deformation, and then influences scraper powdering quality, if but scrape cutter hub using printer body pair first and be clamped, then
First influence of the deformation to the second scraper when scraping cutter hub installation is also little.
Further, it is 55 ° that acute angle is formed by between the left knife lozenges and horizontal plane, the right knife lozenges and water
It is 70 ° that acute angle is formed by between plane, and the left knife bottom thickness is 1.6mm.
Existing flexible scraper bottom thickness is generally 2.2mm, and left knife thickness, which is reduced to 1.6mm, to be conducive to increase left knife
Flexibility, can preferably allow raised points on drip molding surface after scraper flexibility increase, and then can reduce the damage of flexible scraper.
Further, it described first scrapes at the top of cutter hub equipped with trapezoidal groove.
Can be pushed into trapezoidal groove wedge block make the first of trapezoidal groove both sides scrape cutter hub be softened and flexible scraper peace
Be in close contact between clamps, can increase flexible scraper can install can stablize and be not easy it is more.
Further, the thickness per 0.5mm is a color, the left knife and right knife upwards from bottom end for the left knife and right knife
From bottom end, there are three types of different colors upwards.
Often 0.5mm thickness can facilitate staff to judge the left knife and right knife by color to left knife for a color with there is knife
Wear intensity, and then judge whether scraper should be replaced.
Description of the drawings
Fig. 1 is the left view of metal 3D printer scraper in the utility model embodiment；
Fig. 2 is the front view of metal 3D printer scraper in the utility model embodiment.
Specific implementation mode
It is further described below by specific implementation mode：
Reference numeral in Figure of description includes：First scrapes cutter hub 1, left knife 2, right knife 3, lateral rib 4, trapezoidal groove
5, vertical groove 6, second scrape cutter hub 7, screw rod 8, threaded hole 9, metal mesh 10, magnetic powder chamber 11, resilient plug 12.
Embodiment
As depicted in figs. 1 and 2, metal 3D printer scraper includes scraping cutter hub, scrapes cutter hub and scrapes cutter hub 1 and the including first
Two scrape cutter hub 7, and first scrapes cutter hub 1 and second scrapes all thickness 8mm of cutter hub 7, and the first upper end for scraping 1 left side of cutter hub is equipped with laterally convex
Item 4, lateral rib 4 can prevent flexible scraper from falling off and then influence scraper powdering after flexible scraper installation；First scrapes cutter hub 1
Left lateral sides are equipped with vertical groove 6, and vertical groove 6 can play the role of buffer compensation when scraping cutter hub in mounted clamping,
Degree of deformation after scraping cutter hub installation can be reduced；First scrapes and offers trapezoidal groove 5 on 1 upper surface of cutter hub, can be by trapezoidal groove 5
Interior push-in wedge block to scrape the fixture close contact that cutter hub upper end was softened and install scraper, can make to scrape the installation of cutter hub more
Stablize；First scrapes the threaded hole 9 that 1 bottom surface of cutter hub is provided with stainless steel, and metal is welded on the threaded hole 9 of stainless steel
Net 10, the insertion of metal mesh 10 first are scraped in cutter hub 1.Flexible scraper uses rubber material, and 1 manufacturing process of cutter hub is scraped carrying out first
When just metal mesh 10 is put into the rubber of melting and is made the rubber of the first scraper and cool down together.
Second, which scrapes 7 top of cutter hub, is provided with for scraping the screw rod 8 that 1 screw hole of cutter hub is used cooperatively with first, and screw rod 8 is not using
It becoming rusty steel material, is fixedly connected with metal mesh 10 on screw rod 8, screw rod 8 is scraped cutter hub 7 with second by metal mesh 10 and is fixedly connected, the
Two scrapers and 10 fixation procedure of metal mesh are consistent with the fixation procedure of metal mesh 10 with the first scraper.First scrapes cutter hub 1 and second
It scrapes and is fixedly connected with screw rod 8 by threaded hole 9 between cutter hub 7, second can only replace second when scraping the scraper damage on cutter hub 7
When scraping cutter hub 7, and scraping cutter hub 7 to second and replace, taken without scraping cutter hub 1 from the printer body of installation scraper by first
Under, only need to by second scrape cutter hub 7 replaced i.e. can be used so that replace scraper it is more convenient.
Second, which scrapes 7 bottom face of cutter hub, is equipped with left knife 2, and 2 left lateral sides of left knife are lozenges, between lozenges and horizontal plane
55 ° of angles are formed, 2 bottom thickness of left knife is 1.6mm, and left knife 2 and first scrape the integrated molding of cutter hub 1, and the 2 left side setting of left knife is useful
In being provided with the opening imported for magnetic powder on the magnetic powder chamber 11 of dress magnetic powder, magnetic powder chamber 11, it is plugged in opening for preventing magnetic powder
The resilient plug 12 that magnetic powder is poured out in chamber 11.Right knife 3 is provided on the right side of 2 lozenges of left knife, 3 left side of right knife is lozenges, right knife 3
70 ° of angles are formed between lozenges and horizontal plane, right knife 3 and second are integrally formed between scraping cutter hub 7, and 3 bottom thickness of right knife is
1.2mm, 3 maximum gauge of right knife are scraped 7 thickness of cutter hub equal to second plus 2 maximum gauge of left knife, are formed between left knife 2 and right knife 3
55 ° of angles, 2 bottom surface of left knife and 3 bottom surface of right knife are in same plane, and 2 height of left knife is scraped 1 height of cutter hub plus first and added
Second, which scrapes 7 height of cutter hub, is equal to 40mm.When blade wears are serious, the magnetic powder in magnetic powder chamber 11 will fall off out, staff
Magnetic powder it can fall judgement according to the observation and change scraper and damaged and need to change.
Left knife 2 and right knife 3 are from bottom to top divided into one layer per 0.5mm, have divided three layers in total, difference is infected on each layer
Color, staff can the variation of 3 bottom color of left knife 2 and right knife according to the observation be just able to know that left knife 2 or right knife 3 are ground
Damage how many, staff is facilitated to judge that the wear intensity of scraper replaces scraper according to color, using more convenient.
When it is implemented, flexible scraper is turned left, side movement carries out powdering, left knife 2 first carries out first time powdering, then right
Knife 3 followed by carries out second of powdering, and when left knife 2 carries out powdering, left knife 2 can encounter the raised points on drip molding surface, due to
2 upper end thickness of left knife is more than lower end thickness, and 2 lower end flexibility of left knife is stronger, is less prone to card and stops phenomenon；Left knife 2 passes through raised points
When, it may directly allow raised points, it is also possible to make to form the dispersion of the powder of raised points and be bounced, when powder is disperseed to bounce
Afterwards, groove etc. will be will appear on drip molding surface leads to surface of shaped parts out-of-flatness, and at this moment right knife 3, which carries out secondary powdering, to incite somebody to action
Groove caused by playing powder is filled up.When scraping cutter hub 1 on printer body by first, first scrapes 1 left side of cutter hub
The vertical groove 6 on lateral rib 4 and right side all scrapes the 3D printer body contact of cutter hub 1 with installation first, and lateral rib 4 can increase
Big first scrapes the friction between cutter hub 1 and printer body, prevents the first scraper from falling off from printer body, while can prevent
It scrapes cutter hub and scrapes cutter hub left side when mounted and be squeezed and lead to 2 deformation of bottom of left knife；Vertical groove 6 can scrape cutter hub 1 first
Deformed part is compensated when right side is deformed because being squeezed, the degree of deformation of right knife 3 can be reduced.
Above-described is only the embodiments of the present invention, and the common sense such as well known concrete structure and characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these should also be considered as the scope of protection of the utility model, these are not all interfered with
The effect and patent practicability that the utility model is implemented.
Claims (5)
1. metal 3D printer scraper, which is characterized in that scrape cutter hub and second including first and scrape cutter hub；
Described second, which scrapes cutter hub bottom, is provided with left knife, and the left knife one side is and the lozenges of acute angle, institute is presented in horizontal plane
It states second and scrapes the right knife that the left knife lozenges of face on cutter hub is less than left knife bottom thickness equipped with bottom thickness, the right knife is close to left
Knife one side is equipped with and horizontal plane lozenges at an acute angle, and the left knife and right knife lower plane are in same plane
The second of the right knife side scrapes cutter hub and is equipped with vertical groove, and the second scraper body side surface of the left knife side is equipped with
Lateral rib, described first scrapes the threaded hole that cutter hub bottom end is provided with metal material, and metal is fixedly connected on the threaded hole
Net, the metal mesh, which is embedded in, to be scraped cutter hub with first in the first scraper body and is fixedly connected；Described second scrapes to be provided on cutter hub and is used for
The metal screw that cutter hub is used cooperatively is scraped with first, metal mesh, the metal mesh on the screw rod are fixedly connected on the screw rod
Cutter hub is scraped in embedded second scraper body with second to be fixedly connected.
2. metal 3D printer scraper according to claim 1, which is characterized in that the left knife lozenges and horizontal plane
Between be formed by acute angle be 55 °, be formed by between the right knife lozenges and horizontal plane acute angle be 70 °, the left knife bottom
End thickness is 1.6mm.
3. metal 3D printer scraper according to claim 1, which is characterized in that be provided with magnetic powder on the left knife
Chamber is provided with the hole for filling magnetic powder on the magnetic powder chamber, and being equipped in the hole prevents the resilient plug of magnetic powder out of left knife out.
4. metal 3D printer scraper according to claim 1, which is characterized in that described first, which scrapes cutter hub top, is equipped with
Trapezoidal groove.
5. the metal 3D printer scraper according to any claim in Claims 1-4, which is characterized in that described
The thickness per 0.5mm is that there are three types of not upwards from bottom end for a color, the left knife and right knife upwards from bottom end for left knife and right knife
Same color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820048238.5U CN207873130U (en) | 2018-01-11 | 2018-01-11 | Metal 3D printer scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820048238.5U CN207873130U (en) | 2018-01-11 | 2018-01-11 | Metal 3D printer scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207873130U true CN207873130U (en) | 2018-09-18 |
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ID=63506032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820048238.5U Active CN207873130U (en) | 2018-01-11 | 2018-01-11 | Metal 3D printer scraper |
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| Country | Link |
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| CN (1) | CN207873130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899701A (en) * | 2019-12-31 | 2020-03-24 | 贵州电网有限责任公司 | Aluminum or copper laser 3D printing blade surface steel bar adhesive tape composite powder scraping knife |
-
2018
- 2018-01-11 CN CN201820048238.5U patent/CN207873130U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899701A (en) * | 2019-12-31 | 2020-03-24 | 贵州电网有限责任公司 | Aluminum or copper laser 3D printing blade surface steel bar adhesive tape composite powder scraping knife |
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