CN208615309U - A kind of 3D printing power spreading device for capableing of quick-replaceable scraper - Google Patents
A kind of 3D printing power spreading device for capableing of quick-replaceable scraper Download PDFInfo
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- CN208615309U CN208615309U CN201821115350.2U CN201821115350U CN208615309U CN 208615309 U CN208615309 U CN 208615309U CN 201821115350 U CN201821115350 U CN 201821115350U CN 208615309 U CN208615309 U CN 208615309U
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- scraper
- pin
- mounting base
- swing type
- alignment pin
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Abstract
The utility model proposes the 3D printing power spreading devices that one kind is capable of quick-replaceable scraper, including main body, height adjustment mechanism, scraper installing mechanism and scraper；Scraper installing mechanism includes swing type mounting base, swinging axle, switching handle and positioning mechanism；Swing type mounting base, which has, swings axis hole, swinging axle and swing axis hole tight fit；Swinging axle both ends are rotatably assorted with height adjustment mechanism；Switching handle is on the outside of main body, is able to drive swinging axle rotation；Swing type mounting base side is provided with several and is parallel to the scraper mounting groove for swinging axis hole and is equipped with scraper；Several pin holes are provided on swing type mounting base end face, pin hole and scraper mounting groove correspond；After switching handle drive swing type mounting base rotation makes scraper reach operating position, positioning mechanism can position swing type mounting base.The utility model can rapidly and efficiently carry out scraper switching, and doctor position controllable precise after switching.Avoid the problem that single scraper form Powder spreader is repeatedly opened printing cabin replacement scraper and influences product quality.
Description
Technical field
The utility model relates to 3D printing technique field, specially a kind of 3D printing powdering dress for capableing of quick-replaceable scraper
It sets.
Background technique
3D printing technique is a kind of method by the way that raw material stacked in multi-layers is formed part and product, i.e., data and original
Material is put into 3D printer, is controlled product printing in layer by computer program, is ultimately formed finished product.Metal
The advantages such as dusty material selective laser melting (SLM) technique has formed precision high, and comprehensive mechanical property is excellent.Its key refers to
Mark includes consistency, precision and surface roughness, wherein powdering quality generates to Guan Chong consistency and surface roughness
The influence wanted.
Power spreading device majority is using single scraper form, scraper and parts list after metal powder, printing in existing 3D printer
Face rubs, be very easy to abrasion, scratch etc., it is therefore desirable to often replace scraper.But in metal powder material 3D printer
The operation of middle replacement scraper is extremely complex, and needs opening printing cabin to use and complete, when printing heavy parts, if beating
Printing cabin is opened during print to lead to part deformation because of the variation of temperature and pressure, and part quality is unstable.
Summary of the invention
In order to solve the problems existing in the prior art, the utility model proposes the 3D printing pavings that one kind is capable of quick-replaceable scraper
Powder device by using swing type mounting base, and installs several scrapers in swing type mounting base, realizes and is not opening printing cabin
In the case of room, quick-replaceable working scraper, and the position precision of scraper is met the requirements after capable of ensuring to replace.
The technical solution of the utility model are as follows:
Described one kind is capable of the 3D printing power spreading device of quick-replaceable scraper, including main body, height adjustment mechanism, scraper peace
Mounting mechanism and scraper；It include powder flow channel in the main body；The height adjustment mechanism is mounted in main body；The scraper installation
Mechanism is in the lower part of main body, and is connected with height adjustment mechanism；The scraper is mounted on scraper installing mechanism, passes through height
Regulating mechanism can adjust the powdering height of scraper；It is characterized by:
The scraper installing mechanism includes swing type mounting base, swinging axle, switching handle and positioning mechanism；The swing type
Mounting base have swing axis hole, swinging axle be mounted on swing axis hole in, and with swing axis hole tight fit；Swinging axle both ends pass through height
Regulating mechanism is spent, and is rotatably assorted with height adjustment mechanism, it is mobile in short transverse that height adjustment mechanism is able to drive swinging axle；
Switching handle is mounted on swinging axle end, and on the outside of main body, is able to drive swinging axle rotation；
Swing type mounting base side is provided with several and is parallel to the scraper mounting groove for swinging axis hole, each scraper installation
Scraper is mounted in slot；Several pin holes are provided on swing type mounting base end face, pin hole and scraper mounting groove correspond；
The positioning mechanism includes alignment pin, compressed spring；The alignment pin is mounted in main body wall, the pressure
Contracting spring pocket is in alignment pin, constraint of the compressed spring both ends by pin and main body in alignment pin；
After switching handle drive swing type mounting base rotation makes scraper reach operating position, compressed spring can drive fixed
Position pin shaft movement, protrudes into alignment pin in the respective pin hole of swing type mounting base end face, swing type mounting base is positioned.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
It is provided with groove on the alignment pin side wall, blocker ring is also cased in alignment pin, blocker ring is located on the outside of main body；Work as positioning pin
Axial out-draw and when being detached from the pin hole of swing type mounting base end face, blocker ring can be fallen into alignment pin sidewall notches, resistance
Gear alignment pin is driven by compressed spring.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
The geometric center of swing type mounting base end face pin hole is in corresponding scraper mounting groove slot bottom center and swings the line at axis hole center
On.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
The pin hole of swing type mounting base end face is strip pin hole；The long axis of strip pin hole is located at corresponding scraper mounting groove slot bottom center and pendulum
On the line at shaft hole center；After alignment pin and strip pin hole cooperate, the short-axis direction of alignment pin and strip pin hole
Wall surface fitting, and the major axis dimension of strip pin hole meets the powdering height adjustment requirement of scraper.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
Alignment pin is cylindrical pin, and the minor axis dimension of strip pin hole is equal to the diameter of alignment pin, and major axis dimension is greater than alignment pin
Diameter, and meet scraper powdering height adjustment requirement.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
The alignment pin also passes through height adjustment mechanism, and height adjustment mechanism is able to drive alignment pin in short transverse movement, pressure
Constraint of the contracting both ends of the spring by pin and height adjustment mechanism in alignment pin；The pin hole shape of swing type mounting base end face
Shape is identical as the cross sectional shape of alignment pin.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
The slot bottom center of the scraper mounting groove of swing type mounting base side every is equal at a distance from swing axis hole center.
Further preferred embodiment, described one kind are capable of the 3D printing power spreading device of quick-replaceable scraper, it is characterised in that:
It is wanted at a distance from swing axis hole center according to the work of scraper at the slot bottom center of swing type mounting base side difference scraper mounting groove
Ask determining respectively.
Beneficial effect
Using the utility model proposes 3D printing power spreading device, can rapidly and efficiently carry out scraper switching, and after switching
Doctor position controllable precise.Avoid single scraper form Powder spreader replacement scraper is complicated for operation, is repeatedly opened the replacement of printing cabin from scraping
Knife influences the problem of product quality；The efficiency for improving powdering accelerates the molding rate of workpiece, promotes printing effect, improves printing
Part quality.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1: the structural schematic diagram of the utility model；
Fig. 2: Fig. 1 partial enlarged view；
Fig. 3: an embodiment of the present invention structural schematic diagram；
Fig. 4: the overall appearance schematic diagram of the utility model.
Wherein: 1, scraper；2, swing type mounting base；3, pin；4, compressed spring；5, blocker ring；6, alignment pin；7,
Switch handle；8, connecting rod；9, spiral micro actuator；10, main body；11, cover board.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Since power spreading device majority uses single scraper form, scraper and after metal powder, printing zero in existing 3D printer
Part surface rubs, be very easy to abrasion, scratch etc., it is therefore desirable to often replace scraper.But it is beaten in metal powder material 3D
The operation that scraper is replaced in print machine is extremely complex, and needs opening printing cabin to use and complete, when printing heavy parts, if
Printing cabin is opened in print procedure to lead to part deformation because of the variation of temperature and pressure, and part quality is unstable.
To solve the above problems, leading to the utility model proposes the 3D printing power spreading device that one kind is capable of quick-replaceable scraper
It crosses using swing type mounting base, and several scrapers is installed in swing type mounting base, realize when not opening printing cabin,
Quick-replaceable working scraper, and the position precision of scraper is met the requirements after capable of ensuring to replace.
As shown in Figure 1, the 3D printing power spreading device for capableing of quick-replaceable scraper in the utility model, including main body 10,
Height adjustment mechanism, scraper installing mechanism and scraper.
Main body 10 and the main body in the 3D printer power spreading device of single scraper form existing at present are alike, using aluminium alloy
Main frame, stability are good；Main body front and rear sides arrange that powder flow channel, the powder flow channel include grid shape channel, cover board 11, can be right
Metal powder carries out uniform water conservancy diversion, and powder is fallen into above main body in grid shape channel, passes through two groups of front and back grid shape channel uniform flow
To lower body, the distribution of grid shape channel spacing improves powdering uniformity.
10 left and right sides mounting height regulating mechanism of main body, the 3D of height adjustment mechanism and single scraper form existing at present
The height adjustment mechanism of printer power spreading device is alike, including spiral micro actuator 9 and connecting rod 8,8 one end of connecting rod and spiral micro actuator
9 connections, the other end connect scraper installing mechanism, so as to adjust the powdering height of scraper by adjusting spiral micro actuator 9,
To meet the powdering thickness requirement of 3D printing.
The key position of the utility model has been embodied on scraper installing mechanism.As depicted in figs. 1 and 2, the scraper peace
Mounting mechanism includes swing type mounting base 2, swinging axle, switching handle 7 and positioning mechanism.
The swing type mounting base 2 have swing axis hole, swinging axle be mounted on swing axis hole in, and with swing axis hole close-fitting
It closes, when swinging axle rotation, is able to drive swing type mounting base synchronous rotation.It swings axis hole and is equivalent to centre of gyration axis hole, such as
Shown in Fig. 3, when swing type mounting base 2 is cylindrical structure, swing the central shaft hole that axis hole is exactly cylindrical structure, and such as Fig. 1 and
Shown in Fig. 2, when swing type mounting base 2 is sector structure, swinging axis hole is exactly centre of gyration axis hole corresponding to sector structure.
Several scraper mounting grooves for being parallel to swing axis hole, each scraper mounting groove are provided in swing type mounting base side
It is inside mounted on scraper 1, the switching handle 7 by being fixed on swinging axle outer end rotates swinging axle, so as to drive swing type
Mounting base rotation, and then switch different scrapers and be in immediately below swing type mounting base, into working condition.As shown in figure 4, due to
Switch the side outside the main body of handle 7, so the utility model does not need opening printing cabin and can be switched fast scraper.
Additionally, due to the powdering height for also needing accurately to adjust scraper by height adjustment mechanism, so the utility model exists
The through-hole perpendicular to 8 axis of connecting rod is provided on the connecting rod 8 of height adjustment mechanism, swinging axle passes through the through-hole on connecting rod 8, so as to
Enough swinging axle is driven to move in the height direction by connecting rod 8.Since swinging axle is also wanted to be freely rotated, so in order to ensure
Precision can be cooperated between swinging axle and the through-hole of connecting rod 8 by high-precision bearing.
The utility model realizes that being switched fast for scraper is outer except through above structure, the scraper essence after also guaranteeing switching
Degree is met the requirements, that is, guarantees the consistency of switching front and back scraper.Mainly pass through the pin hole on swing type mounting base end face to this, determine
Position mechanism and scraper mounting groove are realized.
For scraper mounting groove, in the swing type mounting base of sector structure as depicted in figs. 1 and 2, swing type installation
The slot bottom center of seat side every scraper mounting groove is equal at a distance from swing axis hole center.And for circle as shown in Figure 3
In cylindricality swing type mounting base, the slot bottom center of the scraper mounting groove of side every can both be added at a distance from swing axis hole center
Work is to be equal, and can also be required to be grouped design according to different scrapers, the slot bottom of every scraper mounting groove in each group
Center is equal at a distance from swing axis hole center.And the distance of each group is then determined according to the job requirement of scraper respectively.
As shown in Figures 2 and 3, several pin holes are provided on swing type mounting base end face, pin hole and scraper mounting groove are one by one
It is corresponding.The positioning mechanism includes alignment pin 6, compressed spring 4；The alignment pin 6 is mounted in main body wall, the pressure
4 sets of contracting spring in alignment pin 6, constraint of the compressed spring both ends by the pin 3 in alignment pin and main body.Work as needs
When carrying out scraper switching, alignment pin is extracted, compressed spring is further compressed, then rotation switching handle, when switching handle band
After the rotation of movable pendulum dynamic formula mounting base makes scraper reach operating position, alignment pin is unclamped, compressed spring can drive alignment pin
Movement, protrudes into alignment pin in the respective pin hole of swing type mounting base end face, swing type mounting base is positioned.
In order to which more convenient switches over operation, as shown in figure 4, it is provided with groove on the alignment pin side wall, it is fixed
Blocker ring 5 is also cased on the pin shaft of position, blocker ring is located on the outside of main body；When alignment pin stretches out and is detached from swing type mounting base
When the pin hole of end face, blocker ring is fallen into alignment pin sidewall notches, unclamps alignment pin at this time, alignment pin is also because of blocker ring
Blocking is unable to be driven by compressed spring；Then rotation switching handle, when switching handle drives the rotation of swing type mounting base to make
After scraper reaches operating position, blocker ring is dialed up, blocker ring is detached from alignment pin sidewall notches, so that compressed spring can
Alignment pin movement is driven, alignment pin is protruded into the respective pin hole of swing type mounting base end face, swing type mounting base is determined
Position.And for registration, the geometric center of swing type mounting base end face pin hole is in corresponding scraper mounting groove slot bottom center
On the line at swing axis hole center.
Since according to different powdering thickness requirements, swing type mounting base can be moved with height adjustment mechanism in short transverse
Dynamic, at this time in order to realize swing type mounting base after short transverse is mobile, positioning mechanism remains to work normally, and the utility model mentions
Go out two schemes:
The first scheme is that the pinhole shape of swing type mounting base end face is identical as the cross sectional shape of alignment pin, at this point,
The alignment pin also passes through height adjustment mechanism, and height adjustment mechanism is able to drive alignment pin and equally moves in short transverse
It is dynamic, constraint of the compressed spring both ends by pin and height adjustment mechanism in alignment pin.No matter swing type is installed in this way
Seat short transverse it is mobile how much, positioning mechanism remains to work normally.
Second scheme is that the pin hole of swing type mounting base end face is designed as strip pin hole；The long axis of strip pin hole is located at
On the line at corresponding scraper mounting groove slot bottom center and swing axis hole center；After alignment pin and strip pin hole cooperate, positioning
Pin shaft is bonded with the wall surface of the short-axis direction of strip pin hole, and the major axis dimension of strip pin hole meets the powdering height adjustment of scraper
It is required that.So when alignment pin is cylindrical pin, the minor axis dimension of strip pin hole is equal to the diameter of alignment pin, major axis dimension
Greater than the diameter of alignment pin, and meet the powdering height adjustment requirement of scraper.At this time when swing type mounting base is in short transverse
After movement, since the major axis dimension of strip pin hole is greater than the diameter of alignment pin, so not influencing strip pin hole and alignment pin
Cooperation, and the minor axis dimension of strip pin hole is equal to the diameter of alignment pin, can satisfy alignment pin for swing type mounting base
The purpose positioned in rotation direction.
Since then, the utility model is realized when not opening printing cabin, quick-replaceable working scraper, and can be true
Protect the purpose that the position precision of scraper after replacing is met the requirements.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.
Claims (8)
1. one kind is capable of the 3D printing power spreading device of quick-replaceable scraper, including main body, height adjustment mechanism, scraper installing mechanism
And scraper；It include powder flow channel in the main body；The height adjustment mechanism is mounted in main body；At the scraper installing mechanism
It is connected in the lower part of main body, and with height adjustment mechanism；The scraper is mounted on scraper installing mechanism, passes through height adjustment machine
Structure can adjust the powdering height of scraper；It is characterized by:
The scraper installing mechanism includes swing type mounting base, swinging axle, switching handle and positioning mechanism；The swing type installation
Seat tool has a swing axis hole, and swinging axle, which is mounted on, to be swung in axis hole, and with swing axis hole tight fit；Swinging axle both ends pass through height and adjust
Mechanism is saved, and is rotatably assorted with height adjustment mechanism, it is mobile in short transverse that height adjustment mechanism is able to drive swinging axle；Switching
Handle is mounted on swinging axle end, and on the outside of main body, is able to drive swinging axle rotation；
Swing type mounting base side is provided with several and is parallel to the scraper mounting grooves for swinging axis hole, in each scraper mounting groove
It is mounted on scraper；Several pin holes are provided on swing type mounting base end face, pin hole and scraper mounting groove correspond；
The positioning mechanism includes alignment pin, compressed spring；The alignment pin is mounted in main body wall, the compression bullet
Spring covers in alignment pin, constraint of the compressed spring both ends by pin and main body in alignment pin；
After switching handle drive swing type mounting base rotation makes scraper reach operating position, compressed spring can drive positioning pin
Axis movement, protrudes into alignment pin in the respective pin hole of swing type mounting base end face, swing type mounting base is positioned.
2. a kind of 3D printing power spreading device for capableing of quick-replaceable scraper according to claim 1, it is characterised in that: described fixed
It is provided with groove on the pin shaft side wall of position, blocker ring is also cased in alignment pin, blocker ring is located on the outside of main body；When alignment pin is outside
When stretching and being detached from the pin hole of swing type mounting base end face, blocker ring can be fallen into alignment pin sidewall notches, stop positioning
Pin shaft is driven by compressed spring.
3. the 3D printing power spreading device that one kind according to claim 1 or claim 2 is capable of quick-replaceable scraper, it is characterised in that: pendulum
The geometric center of dynamic formula mounting base end face pin hole is in corresponding scraper mounting groove slot bottom center and swings on the line at axis hole center.
4. a kind of 3D printing power spreading device for capableing of quick-replaceable scraper according to claim 1, it is characterised in that: swing type
The pin hole of mounting base end face is strip pin hole；The long axis of strip pin hole is located at corresponding scraper mounting groove slot bottom center and swings axis hole
On the line at center；After alignment pin and strip pin hole cooperate, the wall surface of the short-axis direction of alignment pin and strip pin hole is pasted
It closes, and the major axis dimension of strip pin hole meets the powdering height adjustment requirement of scraper.
5. a kind of 3D printing power spreading device for capableing of quick-replaceable scraper according to claim 4, it is characterised in that: positioning pin
Axis is cylindrical pin, and the minor axis dimension of strip pin hole is equal to the diameter of alignment pin, and major axis dimension is greater than the diameter of alignment pin,
And meet the powdering height adjustment requirement of scraper.
6. a kind of 3D printing power spreading device for capableing of quick-replaceable scraper according to claim 1, it is characterised in that: described fixed
Position pin shaft also passes through height adjustment mechanism, and height adjustment mechanism is able to drive alignment pin in short transverse movement, compressed spring
Constraint of the both ends by pin and height adjustment mechanism in alignment pin；The pinhole shape of swing type mounting base end face and fixed
The cross sectional shape of position pin shaft is identical.
7. a kind of 3D printing power spreading device for capableing of quick-replaceable scraper according to claim 1, it is characterised in that: swing type
The slot bottom center of the scraper mounting groove of mounting base side every is equal at a distance from swing axis hole center.
8. a kind of 3D printing power spreading device for capableing of quick-replaceable scraper according to claim 1, it is characterised in that: swing type
Distinguished at a distance from swing axis hole center according to the job requirement of scraper at the slot bottom center of mounting base side difference scraper mounting groove
It determines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821115350.2U CN208615309U (en) | 2018-07-15 | 2018-07-15 | A kind of 3D printing power spreading device for capableing of quick-replaceable scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821115350.2U CN208615309U (en) | 2018-07-15 | 2018-07-15 | A kind of 3D printing power spreading device for capableing of quick-replaceable scraper |
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| Publication Number | Publication Date |
|---|---|
| CN208615309U true CN208615309U (en) | 2019-03-19 |
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ID=65705510
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821115350.2U Active CN208615309U (en) | 2018-07-15 | 2018-07-15 | A kind of 3D printing power spreading device for capableing of quick-replaceable scraper |
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| CN (1) | CN208615309U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108859108A (en) * | 2018-07-15 | 2018-11-23 | 西安瑞特三维科技有限公司 | A kind of 3D printing power spreading device for capableing of quick-replaceable scraper |
| CN110153424A (en) * | 2019-06-24 | 2019-08-23 | 四川天府珞埔三维科技有限公司 | A kind of automatic replacement cutter arrangement of 3D printing equipment |
-
2018
- 2018-07-15 CN CN201821115350.2U patent/CN208615309U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108859108A (en) * | 2018-07-15 | 2018-11-23 | 西安瑞特三维科技有限公司 | A kind of 3D printing power spreading device for capableing of quick-replaceable scraper |
| CN110153424A (en) * | 2019-06-24 | 2019-08-23 | 四川天府珞埔三维科技有限公司 | A kind of automatic replacement cutter arrangement of 3D printing equipment |
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