CN221272020U - Bidirectional powder spreading scraper and powder spreading device comprising same - Google Patents
Bidirectional powder spreading scraper and powder spreading device comprising same Download PDFInfo
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- CN221272020U CN221272020U CN202322470694.2U CN202322470694U CN221272020U CN 221272020 U CN221272020 U CN 221272020U CN 202322470694 U CN202322470694 U CN 202322470694U CN 221272020 U CN221272020 U CN 221272020U
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- powder
- powder spreading
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- 239000000843 powder Substances 0.000 title claims abstract description 248
- 238000003892 spreading Methods 0.000 title claims abstract description 116
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 57
- 238000007789 sealing Methods 0.000 claims description 21
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 abstract description 5
- 238000007639 printing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of 3D printing powder spreading, in particular to a bidirectional powder spreading scraper and a powder spreading device comprising the same.
Description
Technical Field
The utility model relates to the technical field of 3D printing powder paving, in particular to a bidirectional powder paving scraper and a powder paving device comprising the scraper.
Background
The laser 3D printing system is mainly used for specialized production and sales of high-end equipment, has wide application in the fields of mould manufacture, industrial design, medical treatment, automobiles and the like, and mainly comprises two printing modes of powder feeding and powder spreading, wherein powder spreading printing can lead powder to be more uniform and smooth, and the establishment of a model is more stereoscopic; at present, current 3D printing apparatus adopts one-way shop powder in-process more, the time is wasted in the return stroke, cause the extension of individual layer printing time and the reduction of printing efficiency, in order to overcome above-mentioned problem, it is two-way shop powder to have disclosed in the prior art, mainly adopt a structure of storing up powder groove and two scrapers to realize two-way shop powder, be similar to the novel patent of the bi-directional shop powder device of soft scraper of bulletin number CN110355369B, the metal powder gets into shop powder device through the inverted triangle recess of knife rest, fall to working plane through the regular triangle recess of adjusting the base, the problem that this kind of structure exists lies in: because the powder flow of the powder storage tank can not be controlled during forward powder spreading, the powder spreading quantity is insufficient during return, the metal powder quantity in the two powder spreading processes is unbalanced, and the powder spreading quality is influenced.
Disclosure of utility model
The utility model aims to provide a bidirectional powder spreading scraper and a powder spreading device comprising the same, which are used for solving the technical problem that the powder spreading quality is affected by insufficient return powder spreading quantity in the bidirectional powder spreading in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a two-way shop's powder scraper, includes blade holder and tool bit, sets up two shop's powder mouths that are used for respectively that the forward shop is whitewashed and reverse shop's powder and two shop's powder mouths respectively independent intercommunication in the powder storage tank on this blade holder.
Further, the powder spreading openings are a first powder spreading opening and a second powder spreading opening respectively, and the first powder spreading opening and the second powder spreading opening are located at two sides of the cutter head along the running direction respectively.
Furthermore, the inlets of the powder spreading openings are all provided with cross sections in shapes with wide upper parts and narrow lower parts.
Further, the cross section of the inlet of the powder spreading port is in a funnel shape.
Further, the end part of the cutter head is in a conical structure with a plane end surface and wide upper part and narrow lower part.
The utility model provides a contain two-way powder paving device of above-mentioned scraper, includes stores up powder groove and sliding seal board, and the tool bit is installed in storing up powder groove below, sliding seal board slidable mounting store up between powder groove and the tool bit, store up the powder groove and be used for the pre-storage powder, store up the powder inslot and establish independent first powder chamber and the second powder chamber of storing up, sliding seal board sets up the powder mouth that leaks that runs through, and this powder mouth that leaks realizes the first intercommunication of storing up powder chamber and first shop powder mouth or the second stores up the intercommunication of powder chamber and second shop powder mouth according to the displacement of sliding seal board.
Further, the projection of the outlet of the first powder storage cavity in the vertical direction falls into the projection of the first powder paving opening, the projection of the outlet of the second powder storage cavity in the vertical direction falls into the projection of the second powder paving opening, and the displacement direction of the sliding sealing plate is the connecting line direction between the first powder storage cavity and the second powder storage cavity.
Furthermore, the inlets of the powder leakage openings are all provided with the shape with the cross section being wider at the top and narrower at the bottom, the size of the widest part is larger than the sizes of the first powder storage cavity outlet and the second powder storage cavity outlet, and the size of the narrowest part is smaller than the sizes of the first powder paving opening inlet and the second powder paving opening inlet.
Further, the cross section of the inlet of the powder leakage port is in a funnel shape.
Further, the tool bit base sets up T type spout, the slip shrouding sets up to realize reciprocating sliding in the base of tool bit with T type spout sliding fit's shape.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
(1) According to the utility model, the scraper is provided with the two powder spreading openings which are independently communicated with the powder storage groove and are respectively used for forward powder spreading and reverse powder spreading, and the two powder spreading openings are respectively positioned at two sides of the cutter head, so that independent powder discharging and powder spreading during forward powder spreading and reverse powder spreading can be realized;
(2) The shape of the cross section of the powder spreading port is arranged, so that powder can flow out completely through the powder spreading port, and powder loss or influence on normal operation of the device due to the fact that the powder falls on the upper end face of the powder spreading port when flowing through the powder spreading port is avoided;
(3) By arranging the shape of the end part of the cutter head, the utility model avoids the phenomenon of poor powder laying quality caused by insufficient precision of the flatness of the end surface or great difficulty in end surface processing caused by high precision requirement in the prior art due to wider end part of the traditional cutter head;
(4) According to the utility model, the powder storage tank comprising two independent powder storage cavities and the sliding sealing plate are arranged, the first powder storage cavity is communicated with the first powder spreading opening or the second powder storage cavity is communicated with the second powder spreading opening by controlling the displacement of the sliding sealing plate, and the two channels are not opened or closed at the same time, so that the powder discharge amount of forward powder spreading and reverse powder spreading is controlled, the same forward powder discharge amount as the reverse powder discharge amount is ensured, the phenomenon of insufficient reverse powder discharge amount caused by excessive forward powder discharge amount is avoided, and further the powder spreading quality and printing quality are ensured;
(5) According to the utility model, through setting the position relation between the first powder storage cavity and the first powder spreading opening, the position relation between the second powder storage cavity and the second powder spreading opening and the size relation between the first powder storage cavity and the powder leaking opening, powder in the powder storage groove is guaranteed to completely enter the powder leaking opening and flow out of the powder spreading opening when the sliding sealing plate is displaced, so that the powder is prevented from being stagnated in gaps between the powder storage groove and the sliding sealing plate and between the sliding sealing plate and the cutter head tool apron, and the normal operation of the device is prevented from being influenced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a powder spreading device of the present utility model;
FIG. 2 is a schematic diagram of the front view of the powder spreading device of the present utility model;
FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2;
FIG. 4 is a schematic cross-sectional view of a doctor blade according to the utility model;
Fig. 5 is a schematic view of the position of the powder spreading device of the present utility model when it is running to both ends of the printer.
In the figure 1, a powder storage tank; 2. a scraper; 3. sliding sealing plates; 4. a first powder storage cavity; 5. a second powder storage cavity; 6. a powder leakage port; 7. a first powder spreading port; 8. a second powder spreading port; 9. a tool apron; 10. a cutter head; 11. an end portion; 12. a forward driving block; 13. and a reverse driving block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the application. As used in the embodiments of the application and in the appended claims, the singular forms "a," "an," "the," and "the" include
"The" is also intended to include the majority form unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application as detailed in the accompanying claims.
In the description of the present application, it should be understood that the terms "first," "second," "third," and the like are used merely to distinguish between similar objects and are not necessarily used to describe a particular order or sequence, nor should they be construed to indicate or imply relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or",
The association relationship describing the association object may represent that there are three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The utility model is further illustrated in the following figures and examples.
In order to solve the limitations of the prior art, the present embodiment provides a technical solution, and the technical solution of the present utility model is further described below with reference to the drawings and the embodiments.
Referring to fig. 3 and 4, a bidirectional powder spreading scraper 2 comprises a cutter seat 9 and a cutter head 10, wherein the cutter head 10 is positioned below the cutter seat 9, two powder spreading openings respectively used for forward powder spreading and reverse powder spreading are formed in the cutter seat 9, the two powder spreading openings are respectively and independently communicated with a powder storage tank 1, the powder spreading openings are respectively a first powder spreading opening 7 and a second powder spreading opening 8, the first powder spreading opening 7 and the second powder spreading opening 8 are respectively positioned at two sides of the cutter head 10 along the running direction, the two powder spreading openings respectively used for forward powder spreading and reverse powder spreading are formed in the powder storage tank 1 through arranging two powder spreading openings respectively communicated with the cutter head 2, and the two powder spreading openings are respectively positioned at two sides of the cutter head 10, so that the effect of independent powder spreading during forward powder spreading and reverse powder spreading can be realized, the cross section of the inlet of the powder spreading opening is in a shape with the upper width and the lower narrow part, preferably, the cross section of the inlet of the powder spreading opening is in the shape of the hopper, the powder spreading opening is formed by arranging the cross section, the powder spreading opening is favorable for completely flowing out through the powder spreading opening along the two sides along the running direction, and the powder spreading opening is prevented from being influenced by the normal running device on the gap or caused by the powder clamp when the powder falls on the end surface of the powder spreading opening.
Referring to fig. 4, the end 11 of the cutter head 10 is provided with a conical structure with a plane end face and a wide upper part and a narrow lower part, so that the phenomenon that the end face machining difficulty is high due to poor powder laying quality or high precision requirement caused by insufficient precision of the flatness of the end face due to the fact that the end 11 of the cutter head 10 is wider in the prior art is avoided.
Referring to fig. 1-3, a bidirectional powder spreading device comprising the scraper 2 comprises a powder storage tank 1 and a sliding sealing plate 3, wherein a cutter head 10 is arranged below the powder storage tank 1, the installation mode is fixed installation or detachable installation, the sliding sealing plate 3 is slidably arranged between the powder storage tank 1 and the cutter head 10, specifically, a T-shaped chute is arranged on the base of the cutter head 10, the sliding sealing plate 3 is arranged to be in sliding fit with the T-shaped chute to realize reciprocating sliding in the base of the cutter head 10, the powder storage tank 1 is used for pre-storing metal powder for printing, a first powder storage cavity 4 and a second powder storage cavity 5 are arranged in the powder storage tank 1 independently, a through powder leakage opening 6 is arranged on the sliding sealing plate 3, the powder leakage opening 6 realizes the communication of the first powder storage cavity 4 and the first powder spreading opening 7 or the communication of the second powder storage cavity 5 and the second powder spreading opening 8 according to the displacement of the sliding sealing plate 3, specifically, the projection of the outlet of the first powder storage cavity 4 in the vertical direction falls in the projection of the first powder paving port 7, the projection of the outlet of the second powder storage cavity 5 in the vertical direction falls in the projection of the second powder paving port 8, the function of the arrangement is to ensure that the powder in the powder storage cavity falls into the powder paving port completely when falling, the displacement direction of the sliding sealing plate 3 is the connecting line direction between the first powder storage cavity 4 and the second powder storage cavity 5, the inlets of the powder leakage ports 6 are all provided with the shape with the cross sections being wide at the upper part and narrow at the lower part, the dimension of the widest part is larger than the dimension of the outlet of the first powder storage cavity 4 and the dimension of the outlet of the second powder storage cavity 5, the narrowest part is smaller than the dimension of the inlet of the first powder paving port 7 and the inlet of the second powder paving port 8, and preferably the cross section of the inlet of the powder leakage port 6 is provided as a funnel.
Referring to fig. 5, when the device is used for 3D printing powder spreading, the powder spreading device is located at a forward starting position, at this time, a forward driving block 12 on the printing equipment acts on a sliding sealing plate 3 to align an outlet of a first powder storage cavity 4 with a first powder spreading port 7 of a cutter head 10, so that the first powder storage cavity 4 and the first powder spreading port 7 are communicated, in the forward advancing process, powder flows out from the first powder storage cavity 4 through a powder leakage port 6 and the first powder spreading port 7, the powder spreading device advances, a scraper 2 performs forward powder spreading, when the powder spreading device travels to the forward end and needs to perform reverse powder spreading, a reverse driving block 13 on the printing equipment is used for enabling the other side of the sliding sealing plate 3 to displace, at this time, the second powder storage cavity 5 is communicated with the powder leakage port 6 of the sliding sealing plate 3 and the second powder spreading port 8, powder in the second powder storage cavity 5 flows out from the powder spreading device through the powder leakage port 6 and the second powder spreading port 8, and the scraper 2 performs reverse powder spreading.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The bidirectional powder spreading scraper is characterized by comprising a cutter holder (9) and a cutter head (10), wherein two powder spreading openings for spreading powder positively and spreading powder reversely are formed in the cutter holder (9) and are respectively and independently communicated with a powder storage groove (1), the powder spreading openings are a first powder spreading opening (7) and a second powder spreading opening (8), and the first powder spreading opening (7) and the second powder spreading opening (8) are respectively positioned at two sides of the cutter head (10) along the running direction.
2. The bi-directional powder spreading scraper according to claim 1, wherein the inlets of the powder spreading openings are all provided with a shape with a wider upper part and a narrower lower part.
3. A bi-directional powder spreading blade according to claim 2, wherein the cross section of the inlet of the powder spreading port is funnel-shaped.
4. A bi-directional powder spreading scraper according to claim 1, wherein the end (11) of the cutter head (10) is provided with a conical structure with a plane end surface and a wide upper part and a narrow lower part.
5. The bidirectional powder spreading device comprising the bidirectional powder spreading scraper according to any one of claims 2-4 is characterized by comprising a powder storage groove (1) and a sliding sealing plate (3), wherein a cutter head (10) is arranged below the powder storage groove (1), the sliding sealing plate (3) is slidably arranged between the powder storage groove (1) and the cutter head (10), an independent first powder storage cavity (4) and a second powder storage cavity (5) are arranged in the powder storage groove (1), the sliding sealing plate (3) is provided with a through powder leakage opening (6), and the powder leakage opening (6) is communicated with the first powder spreading opening (7) or the second powder storage cavity (5) is communicated with the second powder spreading opening (8) according to the displacement of the sliding sealing plate (3).
6. A bi-directional powder spreading device according to claim 5, wherein the projection of the outlet of the first powder storage chamber (4) in the vertical direction falls within the projection of the first powder spreading opening (7), and the projection of the outlet of the second powder storage chamber (5) in the vertical direction falls within the projection of the second powder spreading opening (8).
7. The bidirectional powder spreading device according to claim 6, wherein the inlets of the powder leakage openings (6) are respectively provided with a shape with a wider upper part and a narrower lower part, the widest part is larger than the sizes of the outlets of the first powder storage cavity (4) and the second powder storage cavity (5), and the narrowest part is smaller than the sizes of the inlets of the first powder spreading openings (7) and the second powder spreading openings (8).
8. A bi-directional powder spreading device according to claim 7, wherein the cross-section of the inlet of the powder leakage opening (6) is funnel-shaped.
9. A bi-directional powder spreading device according to any one of claims 5-8, wherein the base of the cutter head (10) is provided with a T-shaped chute, and the sliding sealing plate (3) is arranged in a shape slidingly matching with the T-shaped chute to realize a reciprocating sliding in the base of the cutter head (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322470694.2U CN221272020U (en) | 2023-09-12 | 2023-09-12 | Bidirectional powder spreading scraper and powder spreading device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322470694.2U CN221272020U (en) | 2023-09-12 | 2023-09-12 | Bidirectional powder spreading scraper and powder spreading device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221272020U true CN221272020U (en) | 2024-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322470694.2U Active CN221272020U (en) | 2023-09-12 | 2023-09-12 | Bidirectional powder spreading scraper and powder spreading device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221272020U (en) |
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2023
- 2023-09-12 CN CN202322470694.2U patent/CN221272020U/en active Active
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