CN116330651B - Polymer material 3D printer shop powder mechanism based on keep apart bowl - Google Patents
Polymer material 3D printer shop powder mechanism based on keep apart bowl Download PDFInfo
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- CN116330651B CN116330651B CN202310330917.7A CN202310330917A CN116330651B CN 116330651 B CN116330651 B CN 116330651B CN 202310330917 A CN202310330917 A CN 202310330917A CN 116330651 B CN116330651 B CN 116330651B
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- 239000000843 powder Substances 0.000 title claims abstract description 104
- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 239000002861 polymer material Substances 0.000 title claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 52
- 239000002245 particle Substances 0.000 claims abstract description 50
- 239000000779 smoke Substances 0.000 claims abstract description 27
- 238000003892 spreading Methods 0.000 claims abstract description 22
- 230000007480 spreading Effects 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000008021 deposition Effects 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 1
- 230000001632 homeopathic effect Effects 0.000 claims 1
- 238000010146 3D printing Methods 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 description 23
- 230000000694 effects Effects 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000000149 argon plasma sintering Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
Abstract
The application belongs to the technical field of 3D printing, and discloses a high polymer material 3D printer powder paving mechanism based on an isolation bowl, which comprises an X-Y plane sliding table and an isolation bowl driving part, wherein the isolation bowl driving part is provided with an isolation bowl part for paving powder in a matched mode, the isolation bowl part comprises a bowl main body and a rotating head arranged at the top of the bowl main body, a hollow cavity is formed in the bowl main body, the isolation bowl driving part is provided with a sealing enclosure matched with the top of the hollow cavity, and at least two air pipe joints are circumferentially arranged on the sealing enclosure. The application can collect the powder particles which are continuously piled up and are caused by powder spreading in the bowl main body, improves the spreading efficiency of the powder spreading, can greatly reduce the probability of blocking the hollow cavity, and can also avoid the damage of the powder particles mixed in the smoke to the negative pressure generator.
Description
Technical Field
The application belongs to the technical field of 3D printing, and particularly relates to a high polymer material 3D printer powder paving mechanism based on an isolation bowl.
Background
3D printing is typically implemented using a digital technology material printer. Often in the fields of mould manufacture, industrial design, etc., are used to manufacture models, and later gradually in the direct manufacture of some products, parts have been printed using this technique.
Referring to patent document with patent publication number of CN109808176B, the application discloses a powder spreading mechanism of a powder type 3D printer based on an isolation bowl, which mainly comprises an X-Y plane sliding table and an isolation bowl powder spreading device. Wherein the isolating bowl powder spreading device achieves the effect of compacting powder particles by … …. The inner edge of the isolation bowl is chamfered, so that powder entering the isolation bowl can be pressed into the powder bed again, and the flatness of the powder bed is guaranteed;
through the analysis of the cited patent document, the through hole formed in the inner wall of the bowl body is shorter, the accumulated powder particles in the bowl body due to powder paving operation are easy to enter the through hole, the blockage of the hollow cavity in the bowl body is easy to be caused in the long term in the past, and in addition, part of the powder particles can enter the negative pressure generator under the action of negative pressure suction force, so that the negative pressure generator fails.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
In view of the problem that powder particles accumulated in the prior bowl main body due to powder spreading operation easily enter the hollow cavity in the bowl main body through the through hole, the powder spreading mechanism of the polymer material 3D printer based on the isolation bowl is provided.
In order to solve the technical problems, the application provides the following technical scheme: the utility model provides a high polymer material 3D printer shop powder mechanism based on isolation bowl, includes X-Y plane slip table, isolation bowl drive part, the cooperation is installed on the isolation bowl drive part and is used for spreading the isolation bowl part of powder, the isolation bowl part include bowl main part with set up in the rotating head at bowl main part top, hollow cavity has been seted up in the bowl main part, install on the isolation bowl drive part with hollow cavity top assorted sealed fender that encloses, sealed fender is gone up circumference and is installed two at least air pipe joints; the inner wall of the bowl body is sequentially provided with a through hole and a ring notch from top to bottom, and the through hole and the ring notch are communicated with the hollow cavity; a storage component is arranged in the hollow cavity, the hollow cavity is divided into an upper smoke discharging area and a lower powder particle deposition area by the storage component, a multistage blocking cover is arranged in the smoke discharging area, and a detachable blocking block matched with the powder particle deposition area is embedded outside the bowl main body; the separating and storing assembly comprises a separating ring and a plurality of throwing pieces, the throwing pieces are inserted into the edges of the separating ring, and the throwing pieces can throw and rotate the bowl main body at a high speed and then send the powder particles stored in the smoke discharging area into the powder particle deposition area in a homeotropic manner; and leak holes matched with a plurality of throwing pieces are sequentially formed in the inner wall of the powder particle deposition area.
As a preferable scheme of the isolation bowl-based high polymer material 3D printer powder paving mechanism, the application comprises the following steps: the isolation bowl driving part comprises a first mounting plate, pulleys, a variable frequency motor, a driving wheel, a driving belt and a second mounting plate, wherein the pulleys are arranged in a plurality of evenly installed mode between the first mounting plate and the second mounting plate, the variable frequency motor is fixedly installed on the side face of the first mounting plate, the driving wheel is fixedly sleeved on the output end of the variable frequency motor, the driving wheel is connected with the rotating head through the driving belt in a transmission mode, and the rotating head is rotatably installed in the second mounting plate.
As a preferable scheme of the isolation bowl-based high polymer material 3D printer powder paving mechanism, the application comprises the following steps: the top of the separation ring is provided with a ring groove, the throwing piece comprises an inserting block, a fixing piece, a supporting spring and a balancing weight, a through hole is formed in the inserting block, the through hole is in a Z-shaped structure, the leakage hole is in an L-shaped structure, and the tail end of the through hole is adaptive to the head end of the leakage hole; the insert block is slidably inserted on the edge of the separation ring, the fixing piece is fixedly installed on the inner wall of the powder particle deposition area, the balancing weight is in a T-shaped structure, the balancing weight is slidably inserted in the fixing piece, the upper end of the balancing weight is fixedly connected with the bottom side of the insert block, and the supporting spring is sleeved outside the balancing weight.
As a preferable scheme of the isolation bowl-based high polymer material 3D printer powder paving mechanism, the application comprises the following steps: the head end of the through hole is opposite to the annular groove, the height ratio of the head end to the tail end of the through hole is 2:1, and the height ratio of the tail end of the through hole to the head end of the leak hole is 1:1.
As a preferable scheme of the isolation bowl-based high polymer material 3D printer powder paving mechanism, the application comprises the following steps: the multistage blocking cover consists of a plurality of stainless steel ring pieces which are arranged in a staggered mode, and the cross section of each stainless steel ring piece is arranged into an arc shape.
As a preferable scheme of the isolation bowl-based high polymer material 3D printer powder paving mechanism, the application comprises the following steps: the number of the through holes is two to three, and every two adjacent through holes are equidistantly arranged.
As a preferable scheme of the isolation bowl-based high polymer material 3D printer powder paving mechanism, the application comprises the following steps: at least four cushion posts are circumferentially arranged in the ring incision, and two ends of each cushion post are fixedly connected with two opposite inner side walls in the ring incision respectively.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the hollow cavity is divided into a smoke discharging area and a powder particle deposition area which are sequentially arranged up and down, and a circular notch for the powder particles to pass through is additionally arranged between the through hole and the bottom side of the bowl main body, so that the powder particles which are continuously piled up and high due to powder paving in the bowl main body can be collected, the paving efficiency of powder paving is improved, and in addition, the blocking probability of the hollow cavity can be greatly reduced by periodically cleaning the powder particles in the powder particle deposition area;
2. the multistage blocking cover is matched with the storage component, so that the particles mixed in the smoke can be stored on the storage component after being cut off, and then the particles on the storage component can be conveyed into a particle deposition area to be combined by matching with the centrifugal force generated by the bowl main body rotating at high speed, thereby facilitating subsequent centralized treatment, avoiding accidental damage of the particles mixed in the smoke to the negative pressure generator and ensuring continuous and normal operation of the negative pressure generator;
3. the variable frequency motor can adaptively adjust the rotating speed of the bowl main body, when the bowl main body is matched with powder spreading, the bowl main body rotates at a low speed, the powder spreading effect can be ensured, and after the bowl main body finishes powder spreading and rises, the bowl main body can rotate at a high speed to generate centrifugal force enough to throw and send a motion, so that the purpose of sending the powder particles stored on the separating ring into a powder particle deposition area is realized.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present application;
FIG. 2 is a schematic view of the structure of the isolation bowl drive assembly of the present application;
FIG. 3 is a first cross-sectional view of the isolation bowl assembly of the present application;
FIG. 4 is a second cross-sectional view of the isolation bowl assembly of the present application;
FIG. 5 is a partial cross-sectional view of a spacer bowl assembly of the present application;
FIG. 6 is a partial cross-sectional view of a second embodiment of the isolation bowl assembly of the present application;
FIG. 7 is an enlarged view at A in FIG. 6;
FIG. 8 is a schematic diagram of the distribution of the slinger on the spacer ring in accordance with the present application;
FIG. 9 is a schematic cross-sectional view of a spacer ring of the present application.
The reference numerals in the figures illustrate:
1. an X-Y plane sliding table;
2. isolating the bowl drive assembly;
21. a first mounting plate; 22. a pulley; 23. a variable frequency motor; 24. a driving wheel; 25. a transmission belt; 26. a second mounting plate;
3. an isolation bowl component;
31. a bowl body; 311. a hollow chamber; 311a, a smoke discharge area; 311b, powder particle deposition zone; 311b-1, leak hole; 312. a through hole; 313. a ring incision; 314. a cushion column;
32. a rotating head;
33. sealing the enclosure;
34. an air pipe joint;
35. a multi-stage blocking cover;
36. a spacer assembly;
361. a spacer ring; 361a, a ring groove;
362. a throwing piece; 362a, plug blocks; 362b, a through hole; 362c, fixing piece; 362d, support springs; 362e, balancing weight;
37. and the blocking block can be detached.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Example 1
Referring to fig. 1-9, this embodiment provides a powder paving mechanism of a polymer material 3D printer based on an isolation bowl, including an X-Y planar sliding table 1 and an isolation bowl driving component 2, where the isolation bowl driving component 2 moves in multiple dimensions on the X-Y planar sliding table 1, the X-Y planar sliding table 1 is an existing product with a mature technology, the application range is wide, the isolation bowl driving component 2 is cooperatively equipped with an isolation bowl component 3 for paving powder, the isolation bowl component 3 can rotate at a low speed during powder paving, thus achieving the purpose of laser sintering scanning while paving powder, which is the existing mature technology, so that details are not repeated here, the isolation bowl component 3 includes a bowl main body 31 and a rotating head 32 arranged at the top of the bowl main body 31, and the bowl main body 31 and the rotating head 32 can be fixedly connected through M5 screws; furthermore, the inner and outer sides of the lower edge of the bowl main body 31 can be subjected to chamfering treatment, and the outer chamfering can ensure that the bowl main body 31 generates vertical downward acting force on powder particles in the powder spreading process so as to achieve the effect of compacting the powder particles; the inner chamfer can press the powder entering the bowl main body 31 into the powder bed again, so that the flatness of the powder bed is ensured;
a hollow cavity 311 is formed in the bowl main body 31, a sealing enclosing block 33 matched with the top of the hollow cavity 311 is arranged on the isolation bowl driving part 2, the sealing enclosing block 33 is fixedly arranged on the bottom side of the second mounting plate 26, at least two air pipe connectors 34 are circumferentially arranged on the sealing enclosing block 33, the air pipe connectors 34 are connected with an external negative pressure generator, and smoke generated by laser sintering scanning in the bowl main body 31 is discharged through the air pipe connectors 34 after passing through a through hole 312 and a smoke discharge area 311 a;
the inner wall of the bowl main body 31 is sequentially provided with a through hole 312 and a ring notch 313 from top to bottom, the through hole 312 and the ring notch 313 are communicated with the hollow cavity 311, the through hole 312 can discharge smoke generated by laser sintering scanning in the bowl main body 31 to the outside of the bowl main body 31 by means of an external negative pressure generator connected with an air pipe joint 34, and the ring notch 313 can collect powder particles which are continuously piled up and are caused by powder spreading in the bowl main body 31, so that the spreading efficiency of the powder spreading is improved;
the hollow chamber 311 is internally provided with a storage separation assembly 36, the hollow chamber 311 is divided into an upper smoke discharging area 311a and a lower powder depositing area 311b through the storage separation assembly 36, specifically, the smoke discharging area 311a is used for discharging and transferring the smoke, the powder depositing area 311b is used for collecting and storing the powder accumulated in the bowl main body 31, the through hole 312 is opposite to the smoke discharging area 311a, the annular notch 313 is opposite to the powder depositing area 311b, the smoke discharging area 311a is internally provided with a multistage blocking cover 35, the multistage blocking cover 35 can block the powder mixed in the smoke discharging area 311a, so that the mixed powder is deposited on the separation ring 361, can not be discharged out through the air pipe joint 34, can be timely discharged into the powder depositing area 311b, further reduces the blocking probability of the smoke discharging area 311a, can not damage an external negative pressure generator, the bowl main body 31 is externally embedded with a detachable block 37 matched with the powder depositing area 311b, and can be detached for further reducing the blocking probability of the powder depositing area 311b after the detachable block 37 is detached, and the blocked block 37 can be detached periodically;
the partition assembly 36 comprises a partition ring 361 and a plurality of throwing pieces 362, the throwing pieces 362 are all inserted on the edge of the partition ring 361, and the throwing pieces 362 can send the powder particles stored in the smoke discharging area 311a into the powder particle deposition area 311b in sequence after the bowl main body 31 is thrown and rotated at high speed;
and the inner wall of the powder deposition area 311b is sequentially provided with the leak holes 311b-1 matched with the plurality of throwing pieces 362, and the leak holes 311b-1 can be used as reliable channels for accumulating powder in the smoke discharge area 311a and smoothly putting the powder into the powder deposition area 311 b.
Referring to fig. 2, the isolation bowl driving part 2 comprises a first mounting plate 21, a pulley 22, a variable frequency motor 23, a driving wheel 24, a driving belt 25 and a second mounting plate 26, wherein the pulley 22 is mounted on the X-Y plane sliding table 1 in a matched manner, so that the whole isolation bowl driving part 2 is assisted to move, the variable frequency motor 23 is easy to regulate speed and saves energy, soft start and quick braking can be realized, the pulley 22 is arranged in a plurality of uniformly mounted between the first mounting plate 21 and the second mounting plate 26, the variable frequency motor 23 is fixedly mounted on the side surface of the first mounting plate 21, the driving wheel 24 is fixedly sleeved on the output end of the variable frequency motor 23, the driving wheel 24 is connected with the rotating head 32 in a transmission manner through the driving belt 25, and the rotating head 32 is rotatably mounted in the second mounting plate 26; specifically, the rotation speed of the output end of the variable frequency motor 23 is adjustable, so that when the variable frequency motor 23 drives the driving wheel 24, the driving belt 25 and the rotating head 32 to rotate, the rotation speed of the bowl main body 31 can be timely adjusted, that is, when the bowl main body 31 rotates at a low speed, the bowl main body 31 can be matched with the powder laying and laser sintering scanning operation, and when the bowl main body 31 rotates at a high speed, centrifugal force enough to act by the throwing piece 362 is generated, so that the powder particles stored in the separating ring 361 can be smoothly dropped into the powder particle deposition area 311 b.
Referring to fig. 5 to 9, in order to feed the powder particles in the annular recess 361a of the fume exhaust area 311a into the powder particle deposition area 311b after the bowl body 31 is lifted up, the following specific arrangement is specifically made: the top of the separation ring 361 is provided with a ring groove 361a, deposited and fallen particles after being blocked in the smoke discharging area 311a can be collected in the ring groove 361a, the throwing piece 362 comprises an inserting block 362a, a fixing piece 362c, a supporting spring 362d and a balancing weight 362e, a through hole 362b is formed in the inserting block 362a, chamfering can be carried out on two sides of the head end of the through hole 362b, particles in the ring groove 361a can conveniently enter the through hole, the through hole 362b is in a Z-shaped structure, a leakage hole 311b-1 is in an L-shaped structure, and the tail end of the through hole 362b is in fit with the head end of the leakage hole 311 b-1;
the specific working principle is as follows: after the bowl main body 31 is lifted, the rotation speed of the output end of the variable frequency motor 23 is greatly increased, the rotation speed of the rotating head 32 is greatly increased, the rotation speed of the bowl main body 31 is increased, the balancing weight 362e is thrown away under the action of strong centrifugal force caused by high rotation speed, the inserting block 362a is driven to slide downwards, the tail end of the through hole 362b is caused to be correspondingly communicated with the head end of the leakage hole 311b-1, and therefore powder particles deposited in the annular groove 361a can be sent into the powder particle deposition area 311b through the inserting block 362a and the leakage hole 311 b-1;
it should be noted that, when the rotation speed of the output end of the variable frequency motor 23 is low, the bowl main body 31 rotates at a low speed, and only when the requirement of scanning powder spreading operation is met, the generated centrifugal force cannot throw the balancing weight 362e at a low rotation speed, so that the throwing piece 362 will not move, the powder particles deposited in the smoke discharging area 311a will still be normally collected in the annular groove 361a, meanwhile, the through hole 362b can store a certain amount of powder particles in a short shaft, but at this time, the tail end of the through hole 362b is not communicated with the head end of the leak hole 311b-1, so that the powder particles in the through hole 362b will not enter the leak hole 311 b-1;
the insert block 362a is slidably inserted on the edge of the partition ring 361, the fixing piece 362c is fixedly installed on the inner wall of the powder particle deposition area 311b, the balancing weight 362e is in a T-shaped structure, the balancing weight 362e is slidably inserted in the fixing piece 362c, the upper end of the balancing weight 362e is fixedly connected with the bottom side of the insert block 362a, and the supporting spring 362d is sleeved outside the balancing weight 362 e; thus, when the bowl body 31 stops rotating or the rotation speed is low, the supporting spring 362d can give the balancing weight 362e and the insert block 362a an upward inclined acting force to keep the two relatively stable, and only when the rotation speed of the bowl body 31 is greatly increased, the balance can be broken under the action of centrifugal force.
Referring to fig. 3 and 4, the number of the through holes 312 is two to three, and each two adjacent through holes 312 are equidistantly arranged, so that the plurality of through holes 312 can ensure the smoke sucking effect of the through holes 312.
Referring to fig. 5 and 6, in order to avoid the influence of the ring notch 313 on the overall structural strength of the bowl body 31, at least four cushion posts 314 are circumferentially mounted in the ring notch 313, and two ends of each cushion post 314 are fixedly connected with two opposite inner side walls in the ring notch 313, so that the structural strength of the bowl body 31 can be ensured without collapse.
Example 2
Referring to fig. 3, 4, and 7, on the basis of embodiment 1, this embodiment differs from the first embodiment in that: the head end of the through hole 362b is opposite to the annular groove 361a, so that the deposited powder particles in the annular groove 361a can be conveyed through the through hole 362b, the height ratio of the head end to the tail end of the through hole 362b is 2:1, and the height ratio of the tail end of the through hole 362b to the head end of the leakage hole 311b-1 is 1:1; the end of the through hole 362b in the insert block 362a after the throwing can be in butt joint communication with the head end of the leak hole 311b-1, and the head end of the through hole 362b can still keep half of powder feeding capacity after being lowered and is also sufficient for supporting the powder conveying flow requirement of the leak hole 311 b-1.
The multistage blocking cover 35 is composed of a plurality of stainless steel ring pieces which are arranged in a staggered mode, the staggered mode can ensure good blocking effect of the multistage blocking cover 35 on particles mixed in smoke, the cross section of each stainless steel ring piece is set to be an arc, and the arc is convenient for the particles to slide down and deposit.
The rest of the structure is the same as in embodiment 1.
It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. It is therefore contemplated that any modifications, equivalents, improvements or modifications falling within the spirit and principles of the application will fall within the scope of the application.
Claims (7)
1. Isolation bowl-based high polymer material 3D printer powder paving mechanism comprises an X-Y plane sliding table (1) and an isolation bowl driving part (2), wherein an isolation bowl part (3) for paving powder is mounted on the isolation bowl driving part (2) in a matched mode, and the isolation bowl powder paving mechanism is characterized in that: the isolating bowl component (3) comprises a bowl main body (31) and a rotating head (32) arranged at the top of the bowl main body (31), a hollow cavity (311) is formed in the bowl main body (31), a sealing enclosing block (33) matched with the top of the hollow cavity (311) is arranged on the isolating bowl driving component (2), and at least two air pipe connectors (34) are circumferentially arranged on the sealing enclosing block (33);
a through hole (312) and a ring notch (313) are sequentially formed in the inner wall of the bowl main body (31) from top to bottom, and the through hole (312) and the ring notch (313) are communicated with the hollow cavity (311);
a storage component (36) is arranged in the hollow chamber (311), the hollow chamber (311) is divided into an upper smoke discharging area (311 a) and a lower powder particle deposition area (311 b) through the storage component (36), a multistage blocking cover (35) is arranged in the smoke discharging area (311 a), and a detachable blocking block (37) matched with the powder particle deposition area (311 b) is embedded outside the bowl main body (31);
the separating and storing assembly (36) comprises a separating ring (361) and a plurality of throwing pieces (362), the throwing pieces (362) are all inserted on the edge of the separating ring (361), and the throwing pieces (362) can be used for throwing particles stored in the smoke discharging area (311 a) into the particle deposition area (311 b) in a homeopathic manner after the bowl main body (31) is thrown at a high speed;
and leak holes (311 b-1) matched with the throwing pieces (362) are sequentially formed in the inner wall of the powder particle deposition area (311 b).
2. The isolation bowl-based high polymer material 3D printer powder spreading mechanism of claim 1, wherein: the isolation bowl driving part (2) comprises a first mounting plate (21), pulleys (22), a variable frequency motor (23), a driving wheel (24), a transmission belt (25) and a second mounting plate (26), wherein the pulleys (22) are arranged in a plurality of evenly installed mode between the first mounting plate (21) and the second mounting plate (26), the variable frequency motor (23) is fixedly installed on the side face of the first mounting plate (21), the driving wheel (24) is fixedly sleeved on the output end of the variable frequency motor (23), the driving wheel (24) is connected with the rotating head (32) through the transmission of the transmission belt (25), and the rotating head (32) is rotatably installed in the second mounting plate (26).
3. The isolation bowl-based high polymer material 3D printer powder spreading mechanism of claim 2, wherein: the top of the separation ring (361) is provided with a ring groove (361 a), the throwing piece (362) comprises an inserting block (362 a), a fixing piece (362 c), a supporting spring (362 d) and a balancing weight (362 e), a through hole (362 b) is formed in the inserting block (362 a), the through hole (362 b) is arranged in a Z-shaped structure, the leak hole (311 b-1) is arranged in an L-shaped structure, and the tail end of the through hole (362 b) is arranged in an adaptive manner with the head end of the leak hole (311 b-1);
the insert block (362 a) is slidably inserted on the edge of the partition ring (361), the fixing piece (362 c) is fixedly installed on the inner wall of the powder particle deposition area (311 b), the balancing weight (362 e) is in a T-shaped structure, the balancing weight (362 e) is slidably inserted in the fixing piece (362 c), the upper end of the balancing weight (362 e) is fixedly connected with the bottom side of the insert block (362 a), and the supporting spring (362 d) is sleeved outside the balancing weight (362 e).
4. The isolation bowl-based polymer material 3D printer powder spreading mechanism of claim 3, wherein: the head end of the through hole (362 b) is opposite to the annular groove (361 a), the height ratio of the head end to the tail end of the through hole (362 b) is 2:1, and the height ratio of the tail end of the through hole (362 b) to the head end of the leakage hole (311 b-1) is 1:1.
5. The isolation bowl-based polymeric material 3D printer powdering mechanism of any one of claims 1 to 4, wherein: the multistage blocking cover (35) is composed of a plurality of stainless steel ring pieces which are arranged in a staggered mode, and the cross section of each stainless steel ring piece is arranged into an arc shape.
6. The isolation bowl-based high polymer material 3D printer powder spreading mechanism of claim 1, wherein: the number of the through holes (312) is two to three, and every two adjacent through holes (312) are equidistantly arranged.
7. The isolation bowl-based high polymer material 3D printer powder spreading mechanism of claim 1, wherein: at least four cushion columns (314) are circumferentially arranged in the ring notch (313), and two ends of each cushion column (314) are fixedly connected with two opposite inner side walls in the ring notch (313) respectively.
Priority Applications (1)
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