CN108773070B - Spreading device for 3D printing equipment and spreading method thereof - Google Patents
Spreading device for 3D printing equipment and spreading method thereof Download PDFInfo
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- CN108773070B CN108773070B CN201810675926.9A CN201810675926A CN108773070B CN 108773070 B CN108773070 B CN 108773070B CN 201810675926 A CN201810675926 A CN 201810675926A CN 108773070 B CN108773070 B CN 108773070B
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- rotating roller
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- 238000003892 spreading Methods 0.000 title claims abstract description 128
- 230000007480 spreading Effects 0.000 title claims abstract description 127
- 238000010146 3D printing Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 103
- 238000003860 storage Methods 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims description 44
- 238000007639 printing Methods 0.000 claims description 18
- 230000003213 activating effect Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005054 agglomeration Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005056 compaction Methods 0.000 description 6
- 230000001680 brushing effect Effects 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 238000010408 sweeping Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000007704 transition Effects 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
- B29C64/218—Rollers
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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
- B29C64/10—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
- B33Y10/00—Processes of additive manufacturing
-
- 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
Abstract
The invention particularly relates to a spreading device for 3D printing equipment and a spreading method thereof, which comprises a supporting beam, a storage bin, a feeding device, a size-adjustable blanking cavity, a vibrating device, an adjusting device, a brush roller, a actively rotating brush roller, a replaceable adjusting movable block and a corresponding driving device, wherein the variable height difference t is utilized to ensure the compact thickness of a powdery material layer, the compactness of a 3D printing product is ensured, and the problems of material waste, environmental pollution and the like caused by the incapability of closing a sand outlet are solved.
Description
Technical Field
The invention belongs to the technical field of 3D printing equipment, and particularly relates to a spreading device for 3D printing equipment and a spreading method thereof.
Background
A number of additive manufacturing process methods are known to exist, using a number of types of 3D printing equipment, some of which have the following general steps:
(1) First, applying a granular material to the entire surface of the print area to form a layer of uncured granular material;
(2) Selectively curing the granular material layer in a predetermined partial region by selectively printing a treating agent (e.g., a binder);
(3) The build platform reduces the thickness of a corresponding one of the layers, repeating steps (1) and (2) to produce the desired part;
(4) Finally, the part, which is supportingly wrapped with loose, uncured granular material, is removed.
A spreading device (also called a sander or powder spreading device) for a 3D printing apparatus, typically working with step (1) above, is known to have a variety of available spreading devices for a 3D printing apparatus, by means of which a granular building material can be applied to a printing area in a uniform layer. However, in the spreading device in the prior art, a newly-paved material layer is usually compacted by using up-and-down vibration beating of a scraping plate, and the surface of the material layer is easy to be uneven in a step type due to the discontinuity of a vibration mode. The inclined scraping plate is adopted to translate, smooth and compact, but the compacting effect is limited, and the compactness is not enough; when a large amount of compaction is set, the problem of pushing sand is liable to occur. Meanwhile, the opening and closing mode of the discharging opening of the spreading device in the prior art has no good scheme, and the feasibility is not enough and cannot be implemented.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a spreading device for 3D printing equipment, which adopts a closable and adjustable blanking opening, adopts an actively and reversely rotating roller to brush and sweep a flat powdery material layer, adopts a positively rotating roller to roll and compact the powdery material layer, ensures the compactness of the powdery material layer by utilizing a variable height difference t, ensures the compactness of a 3D printing product, and simultaneously solves the material waste and environmental pollution caused by the incapability of closing the blanking opening.
The invention adopts the technical scheme that:
a paving device for a 3D printing apparatus for applying powder material for 3D printing in a printing work area, comprising:
at least one support beam (1) supporting the whole paver, said support beam spanning the print work area in which the load-bearing paver moves;
At least one storage bin (2) which is an elongated cavity spanning the printing area and is connected to the support beam (1);
The conveying device (3) is arranged at the upper part of the inner cavity of the storage bin (2) and is used for conveying the printed powder material into the whole storage bin so that the powder material is uniformly distributed on the length of the storage bin;
the length of the blanking cavity can partially or completely cover the printing working area and is communicated with the storage bin (2), and a long blanking opening (41) with the length which can partially or completely cover the printing working area is arranged at the lower part of the blanking cavity;
The first rotary roller (6) is a circular roller with the length of one or more sections of combined materials being more than or equal to the feeding opening (41), and is arranged at the lower part of the storage bin (2) and at the rear part of the feeding cavity (4); when the spreading device works, the first rotary roller (6) rotates, and the linear speed direction of the first rotary roller is the same as or opposite to the moving direction of the spreading device;
and/or a second rotating roller (7), which is a circular roller with the length of one section or more than or equal to the length of the discharging opening (41) after being combined, is arranged at the lower part of the storage bin (2) and is arranged at the rear part of the discharging cavity (4); when the spreading device works, the rotating direction of the second rotating roller (7) is opposite to the rotating direction of the first rotating roller (6), or the linear speed direction of the second rotating roller (7) is opposite to or the same as the moving direction of the spreading device.
Furthermore, the spreading device for the 3D printing equipment further comprises a brush roller (10), bristles are arranged on the outer circumference of the brush roller, and the brush roller is equal to the first rotating roller (6) and the second rotating roller (7) in length, can continuously rotate and brush, and remove foreign matters adhered on the first rotating roller (6) and the second rotating roller (7).
Further, a height difference t is arranged between the first rotating roller (6) and the second rotating roller (7), and the height difference t is a compressible thickness value of a pavement layer formed by the operation of the pavement device for the 3D printing equipment.
Further, the paving device for the 3D printing equipment further comprises a roller driving device (11), and the roller driving device (11) can set and adjust the height difference t between the first rotating roller (6) and the second rotating roller (7).
Further, the roller driving device (11) comprises a driving bracket (11 c), and the first rotating roller (6), the second rotating roller (7) and the brush roller (10) are all arranged on the driving bracket (11 c).
Further, the roller driving bracket (11 c) is provided with a bracket left adjusting shaft (11 a) and a bracket right adjusting shaft (11 b), and a rotary roller first driving wheel (6 a), a rotary roller second driving wheel (7 a), a brush roller driving wheel (10 a) and intermediate wheels (6 b and/or 7b and/or 10 b) can also be arranged;
the bracket adjusting shafts (11 a, 11 b) are connected to the driving bracket (11 c), and the bracket adjusting shafts (11 a, 11 b) can set and adjust the height difference t between the first rotating roller (6) and the second rotating roller (7);
The intermediate wheels (6 b, 7b, 10 b), the first rotary roller (6), the first rotary roller driving wheel (6 a), the second rotary roller (7), the second rotary roller driving wheel (7 a), the brush roller (10) and the brush roller driving wheel (10 a) are all arranged on the driving bracket (11 c);
the first rotary roller driving wheel (6 a) is connected with the first rotary roller (6) to synchronously rotate, the second rotary roller driving wheel (7 a) is connected with the second rotary roller (7) to synchronously rotate, and the brush roller driving wheel (10 a) is connected with the brush roller (10) to synchronously rotate;
the intermediate wheels (6 b and/or 7b and/or 10 b), the first rotary roller driving wheel (6 a), the second rotary roller driving wheel (7 a) and the brush roller driving wheel (10 a) are connected with each other to form a mutually driven gear train; any one of the intermediate wheels (6 b and/or 7b and/or 10 b) or the first rotary roller driving wheel (6 a) or the second rotary roller driving wheel (7 a) or the second brush roller driving wheel (10 a) is a driving wheel, and is driven by a rotary driver, so that the wheel train runs under the driving of the rotary driver, and the first rotary roller (6), the second rotary roller (7) and the brush roller (10) rotate in a preset direction.
Further, the spreading device for the 3D printing equipment further comprises a spreading device bracket (12), wherein the upper end of the spreading device bracket (12) is connected with the supporting beam (1) and synchronously moves with the spreading device for the 3D printing equipment;
the spreading device bracket (12) is connected with the roller driving device (11) and drives the roller driving device (11) to move; at the same time, the spreading device support (12) is arranged to be able to set and adjust the rotation angle of the roller drive (11).
Further, a left bracket movable block (12 a) and a right bracket movable block (12 b) are arranged on the spreading device bracket (12), and the left bracket movable block (12 a) and the right bracket movable block (12 b) can be fixedly connected and also can be detached from the spreading device bracket (12) for replacement;
The support movable blocks (12 a and 12 b) are provided with strip-shaped sliding grooves, the width of each sliding groove is the same as the diameter of each support adjusting movable block (12 a and 12 b), the support left adjusting shaft (11 a) is installed in the sliding groove of each support left movable block (12 a) to move, and the support right adjusting shaft (11 b) is installed in the sliding groove of each support right movable block (12 b) to move.
Further, the sliding groove on the left movable block (12 a) of the spreading support is arranged in a left-low right-high or left-high right-low or vertical or horizontal mode, and the sliding groove on the right movable block (12 b) of the spreading support is arranged in a left-high right-low or left-low right-high or horizontal mode or vertical mode, so that the support adjusting movable blocks (12 a and 12 b) can slide freely in the sliding groove; the sliding groove can set and adjust the positions of the left movable block (12 a) and the right movable block (12 b) of the bracket.
Further, the blanking cavity (4) is a space limited by a fixed side plate (42), a bottom plate (43) and a movable side plate (44); the movable side plate (44) is hinged to the lower part of the storage bin (2), and a blanking opening (41) is formed between the bottom plate (43) and the movable side plate (44); the hinge point of the movable side plate (44) is higher than the lower edge of the side plate of the storage bin (2), sealing is not needed, and sand leakage is avoided.
Further, the blanking opening (41) is provided with an adjusting device (9), the adjusting device (9) is connected with the movable side plate (44), and the angle of the movable side plate (44) can be adjusted in a locking mode, so that the size of an opening of the blanking opening (41) is changed, the outflow amount of powder materials is controlled, and the powder materials can be stopped from flowing out at the minimum.
Further, the spreading device for the 3D printing equipment further comprises a vibrating device (8) and/or a material activating device (5) arranged at the bottom of the storage bin, wherein the vibrating device (8) shakes and loosens the printed powder material, so that the powder material entering the blanking cavity (4) is loose and free of caking; the material activating device (5) is used for activating and scattering the printed powder material, so that the powder material entering the blanking cavity (4) is loose, and the agglomeration and adhesion conditions are avoided; the material moving device (5) is at least one layer of movable screen, such as two layers of relatively movable screen; the vibration device (8) is preferably an electromagnetic oscillation vibrator or a rotary vibrator.
Further, the method for paving the 3D printing equipment by using the paving device comprises the following steps of:
1) Calculating a compressible thickness value t of the paving layer according to the type, granularity and shape of the powder material, the viscosity parameters of the curing agent and the regulator, and configuring a corresponding roller driving device (11) and/or a corresponding paving bracket (12) according to the value t, for example, selecting corresponding paving bracket movable blocks (12 a and 12 b);
2) Installing and adjusting the roller driving device (11) and the spreading device bracket (12), detecting the fit clearance between the roller driving device (11) and the spreading device bracket (12), for example, installing selected spreading device bracket movable blocks (12 a and 12 b) on the spreading device bracket, detecting the fit clearance between the bracket adjusting movable blocks (12 a and 12 b) in a bracket movable block sliding groove, and ensuring the flexibility of movement;
3) Starting 3D printing equipment, wherein the spreading device starts to work, the spreading device moves leftwards to perform spreading operation, the support beam (1) drives the spreading device support (12) to move leftwards, the spreading device support (12) pushes the support (11C) to move, the support left adjusting shaft (11 a) is positioned at the rightmost end of a chute of the support left movable block (12 a), the support right adjusting shaft (11 b) is positioned at the rightmost end of a chute of the support right movable block (12 b), and the support left adjusting shaft (11 a) is higher than the support right adjusting shaft (11 b), so that the first rotating roller (6) is lower than the second rotating roller (7), and the height difference is t; at the moment, after a material layer paved by the paving device is brushed and pre-pressed and leveled by a rotating roller II (7) rotating clockwise, the upper plane of the material layer is equal to the arc surface below the rotating roller II (7), the material layer is rolled and compacted by a rotating roller I (6) rotating anticlockwise, and the compacting and compressing thickness of the material layer is t;
4) After reaching the leftmost end of the printing working area, the spreading device reversely moves rightwards to perform spreading operation, a spreading device bracket (12) pushes a bracket (11C) to move rightwards, a bracket left adjusting shaft (11 a) is positioned at the leftmost end of a chute of a bracket left movable block (12 a), and a bracket right adjusting shaft (11 b) is positioned at the leftmost end of a chute of a bracket right movable block (12 b); the left adjusting shaft (11 a) of the bracket is lower than the right adjusting shaft (11 b) of the bracket, so that the first rotating roller (6) is higher than the second rotating roller (7), and the height difference is t; at the moment, after the material layer paved by the paving device is brushed and pre-pressed and flattened by the rotating roller I (6) rotating anticlockwise, the upper plane of the material layer is equal to the lower arc surface of the rotating roller I (6), the material layer is compacted by rolling by the rotating roller II (7) rotating clockwise, and the compacting thickness of the material layer is t;
5) Repeating the step 3) and the step 4) until the preset printing layer number is all completed.
The beneficial effects of the invention at least comprise:
(1) The invention designs a spreading device for 3D printing equipment, adopts a blanking port which can be closed and has adjustable size, and solves the problems of material waste and environmental pollution caused by the incapability of closing the blanking port;
(2) The invention adopts the roller brush with the initiative and the reverse rotation to sweep and level the powdery material layer, adopts the roller with the forward rotation to roll and compress the powdery material layer, and ensures the compactness of the powdery material layer by utilizing the variable height difference t, thereby ensuring the compactness of the 3D printing product;
(3) The roller height difference adjusting mechanism adopted by the invention is simple, easy to maintain and replace, low in cost and stable and reliable in structure;
(4) The spreading device for the 3D printing equipment and the spreading method thereof are used for the 3D printing equipment, can realize full-automatic bidirectional spreading, and realize automatic control of the height difference of the rotating roller and the opening and closing of the sand outlet during forward and reverse rotation.
Drawings
FIG. 1 is a view showing an internal structure of an embodiment of a paving device for a 3D printing apparatus according to the present invention;
FIG. 2 is a partially enlarged view of the internal structure of one embodiment of a paving device for a 3D printing apparatus according to the present invention;
FIG. 3 is a second axial internal structural view of one embodiment of a paving device for a 3D printing apparatus according to the present invention;
FIG. 4 is an enlarged view of a portion of the axial structure of a first and second rotating rollers of one embodiment of a paving device for a 3D printing apparatus according to the present invention;
FIG. 5 is an enlarged three-view of the roller drive (11 a, 11b, 11 c) of one embodiment of the paving device for a 3D printing apparatus according to the present invention;
FIG. 6 is a front view of the construction of one embodiment of a paving device for a 3D printing apparatus according to the present invention;
FIG. 7 is a left side view of the construction of one embodiment of a paving device for a 3D printing apparatus according to the present invention;
FIG. 8 is an assembly view of a paver frame and roller-driving apparatus of an embodiment of a paver for a 3D printing apparatus of the invention;
FIG. 9 is an enlarged view of a portion of FIG. 8;
FIG. 10 is a schematic view showing the positional relationship between a support adjustment shaft and a support movable block in three paving states according to one embodiment of a paving apparatus for a 3D printing device of the present invention;
FIG. 11 is a schematic view showing the positional relationship between a support adjusting shaft and a support movable block when one embodiment of a spreading device for 3D printing equipment of the present invention spreads leftwards;
fig. 12 is a schematic view showing a positional relationship between a support adjusting shaft and a support movable block when a paving device for 3D printing equipment according to an embodiment of the present invention is paved right.
The device comprises a 1-supporting beam, a 2-storage bin, a 3-conveying device, a 4-discharging cavity, a 5-activating device, a 6-rotating roller I, a 6 a-rotating roller I driving wheel, a 7-rotating roller II, a 7 a-rotating roller II driving wheel, an 8-vibrating device, a 9-adjusting device, a 10-brushing roller, a 10 a-brushing roller driving wheel, a 6b, 7b and a 10 b-intermediate wheel, an 11-roller driving device, an 11 a-bracket left adjusting shaft, an 11 b-bracket right adjusting shaft, an 11 c-driving bracket, a 41-discharging opening, a 42-fixed side plate, a 43-bottom plate, a 44-movable side plate, a 12-spreading device bracket, a 12 a-bracket left movable block and a 12 b-bracket right movable block.
Description of the embodiments
In order to enable those skilled in the art to better understand the technical scheme of the present invention, the present invention will be further described in detail with reference to specific embodiments. It is noted that the embodiments described below are exemplary only for explaining the present invention, and are not to be construed as limiting the present invention. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
According to an aspect of the present invention, there is provided a paving apparatus for a 3D printing apparatus, and fig. 1 is a view of an axial internal structure of an embodiment of the paving apparatus for a 3D printing apparatus according to the present invention, showing a relative positional relationship and an action relationship of a part of the internal structure; as can be seen from fig. 1, the invented paving device for 3D printing apparatus is used to apply powder material for 3D printing in a printing work area to form a plurality of powder material layers shown in the figure, wherein a part of the formed powder material layers has been printed into a cured product. The powder paving device comprises: the device comprises a supporting beam 1, a storage bin 2, a material conveying device 3 and a blanking cavity 4, wherein at least one supporting beam 1 supporting the whole material spreading device is provided with the material spreading device comprising two supporting beams, the supporting beams span a printing work area, and the material spreading device is born to move in the printing work area; at least one storage bin 2, in this embodiment, a storage bin is provided, the storage bin is an elongated cavity crossing the printing area and is connected to the supporting beam 1, and in order to realize bidirectional sanding, in this embodiment, the storage bin 2 is made into a shape like a figure, so as to form two non-independent storage cavities; the conveying device 3 is arranged at the upper part of the inner cavity of the storage bin 2 and is used for conveying the printed powder material into the whole storage bin so that the powder material is uniformly distributed on the length of the storage bin; the unloading chamber 4, this embodiment has given that a storage silo lower part is provided with 2 unloading chambeies, the unloading chamber with storage silo 2 intercommunication, unloading chamber lower part is equipped with equilong long unloading mouth 41, and two unloading mouths are used for the shop material when the different direction of motion of shop material device as shown in the figure, use the right side unloading mouth when the shop material device moves rightwards, otherwise use left side unloading mouth. The spreading device also comprises a first rotating roller 6 and a second rotating roller 7, wherein the first rotating roller is a circular roller with a length longer than that of the blanking opening, is arranged at the lower part of the storage bin 2 and is arranged at the rear part of the blanking cavity 4; when the spreading device moves rightwards to perform spreading operation, the first rotating roller 6 rotates anticlockwise, as shown by an arrow in fig. 1, that is, the first rotating roller is upwards in the linear speed direction of the circular arc surface close to the feed opening 41, and at this time, the first rotating roller 6 plays a role of brushing and sweeping, and can be called as a sweeping roller; the powder material layer paved from the sanding opening is brushed by anticlockwise rotation of the circumferential surface of the rotating roller, so that the powder layer is smoother; the second rotating roller 7 is a section of circular roller with the length longer than that of the blanking opening, is arranged at the lower part of the storage bin 2 and is arranged at the rear part of the blanking cavity 4; when the spreading device works, the rotation direction of the second rotating roller 7 is opposite to the rotation direction of the first rotating roller 6, as shown by an arrow in fig. 1, and the second rotating roller 7 plays a role in compaction, which can be called a compaction roller; the diameter of the first rotating roller 6 is the same as that of the second rotating roller 7, and the paved powder material layer is leveled by the first rotating roller and then rolled by the second rotating roller 7, so that the powder layer is more compact. On the contrary, when the spreading device moves leftwards to perform spreading operation, the second rotating roller 7 rotates clockwise, as shown by an arrow in fig. 1, that is, the linear velocity direction of the circular arc surface of the second rotating roller, which is close to the left feed opening 41, is upward, and at this time, the second rotating roller 7 performs a brushing and sweeping function, which may be called a sweeping roller; the powder material layer paved from the sand outlet is brushed by clockwise rotation of the circumferential surface of the rotating roller II, so that the powder layer is smoother; the rotation direction of the first rotating roller 6 is opposite to the rotation direction of the second rotating roller 7, as shown by an arrow in fig. 1, and the first rotating roller 6 plays a role in compaction, which can be called a compaction roller; after the paved powder material layer is brushed and leveled by the rotary roller II 7, the powder material layer is rolled by the rotary roller I6, so that the powder material layer is more compact. The first rotary roller 6 plays a role in brushing and paving when the spreading device moves the spreading rightwards, and plays a role in rolling and compacting when the spreading device moves the spreading leftwards; the second rotating roller 7 plays a role in brushing and paving when the spreading device moves the spreading leftwards, and plays a role in rolling and compacting when the spreading device moves the spreading rightwards. Further, in order to improve the compactness of the paving layer, the rotation speeds of the first rotating roller 6 and the second rotating roller 7 can be set to a preset value M, and the preset value M is calculated according to parameters such as the type, granularity, shape, the nature of the used curing agent and the regulator of the powder material and the like; for powder materials with particularly good fluidity, the rotation linear speed of the first rotating roller 6 and the second rotating roller 7 can be equal to the moving speed of the spreading device; for powder materials with poor flowability, the rotation linear speed of the first rotating roller 6 and the second rotating roller 7 can be smaller or larger than the moving speed of the spreading device.
According to the specific embodiment of the invention, the spreading device for the 3D printing equipment further comprises a vibrating device 8 and a material activating device 5 arranged at the bottom of the storage bin, wherein the vibrating device 8 shakes and loosens the printed powder material, and the material activating device 5 loosens and loosens the printed powder material, so that the powder material entering the blanking cavity 4 is loose and has no caking and adhesion. The material moving device 5 is at least one layer of movable screen, such as two layers of relatively movable screen; the vibration device 8 preferably adopts an electromagnetic oscillation vibrator or a rotary vibrator.
Fig. 2 is an enlarged partial view of the internal structure of the axial section of one embodiment of the paving device for 3D printing apparatus of the present invention, showing details of the parts of the discharge opening 41, the discharge chamber 4, the adjusting device 9, and the rotating roller 6.
According to the embodiment of the invention, the blanking cavity 4 is a space limited by a fixed side plate 42, a bottom plate 43 and a movable side plate 44; the movable side plate 44 is hinged to the lower portion of the storage bin 2, and a feed opening 41 is formed between the bottom plate 43 and the movable side plate 44. The hinge point of the movable side plate 44 is higher than the lower edge of the side plate of the storage bin 2, so that sealing is not needed, and sand leakage is avoided. The movable side plate 44 is hinged at the lower part of the storage bin and is connected with the adjusting device 9, the adjusting device 9 can change the angle of the movable side plate 44 and can be locked, so that the size of the opening of the feed opening 41 is changed, the outflow amount of the powder material is controlled, and the powder material can be stopped flowing out at the minimum.
According to the specific embodiment of the invention, the spreading device for the 3D printing equipment further comprises a brush roller 10, wherein the outer circumference of the brush roller is provided with brush hairs, and the brush hairs are equal to the first rotating roller 6 and the second rotating roller 7 in length, so that foreign matters stuck on the first rotating roller 6 and the second rotating roller 7 can be brushed off.
FIG. 3 is a second axial internal structural view of one embodiment of a paving device for a 3D printing apparatus according to the present invention, showing the internal structural relationship of the roller driving device 11 of the present invention; fig. 4 is a partially enlarged view of the axial structures of a first rotating roller and a second rotating roller of one embodiment of the paving device for 3D printing apparatus of the present invention, and fig. 5 is an enlarged three-view of roller driving devices (11 a,11 b,11 c) of one embodiment of the paving device for 3D printing apparatus of the present invention. As shown in fig. 3, 4 and 5, according to an embodiment of the present invention, the paving apparatus for a 3D printing apparatus further includes a roller driving device 11, and the roller driving device 11 includes: a drive bracket 11c, intermediate wheels (6 b, 7b, 10 b), a first rotary roller drive wheel 6a, a second rotary roller drive wheel 7a, a brush roller drive wheel 10a, and bracket adjustment shafts (11 a,11 b); the intermediate wheels (6 b, 7b, 10 b), the first rotary roller 6, the first rotary roller driving wheel 6a, the second rotary roller 7, the second rotary roller driving wheel 7a, the brush roller 10 and the brush roller driving wheel 10a are all arranged on the driving bracket 11c, the first rotary roller driving wheel 6a and the first rotary roller 6 are connected and synchronously rotate, the second rotary roller driving wheel 7a and the second rotary roller 7 are connected and synchronously rotate, the brush roller driving wheel 10a and the brush roller 10 are connected and synchronously rotate, and the intermediate wheels (6 b, 7b, 10 b), the first rotary roller driving wheel 6a, the second rotary roller driving wheel 7a and the brush roller driving wheel 10a are mutually meshed to form a gear train; any one of the intermediate wheels (6 b, 7b, 10 b) or the first rotary roller driving wheel 6a or the second rotary roller driving wheel 7a or the second brush roller driving wheel 10a is a driving wheel, the intermediate wheel 6b is set as the driving wheel in the embodiment, and is connected with a rotary driver, and a driving gear train is meshed for operation, so that the first rotary roller 6, the second rotary roller 7 and the brush roller 10 rotate in a preset direction shown by an arrow in fig. 4.
Fig. 6 is a front view showing the structure of one embodiment of a paving device for 3D printing apparatus according to the present invention, and fig. 7 is a left view showing the structure of one embodiment of a paving device for 3D printing apparatus according to the present invention; according to an embodiment of the present invention, as shown in fig. 6 and 7, the paving device for 3D printing equipment further includes a paving device bracket 12, wherein an upper end of the paving device bracket 12 is connected to the support beam 1 and moves synchronously with the paving device; the left movable block 12a and the right movable block 12b are arranged on the spreading device bracket 12, and the left movable block 12a and the right movable block 12b can be detached from the spreading device bracket 12 for replacement and maintenance; the movable blocks (12 a and 12 b) of the bracket are provided with strip-shaped sliding grooves, the width of each sliding groove is the same as the diameter of the corresponding adjusting shaft (11 a and 11 b) of the bracket, and clearance fit is formed; the left support adjusting shaft 11a moves in a sliding groove of the left support movable block 12a, and the right support adjusting shaft 11b moves in a sliding groove of the right support movable block 12 b; when the spreading device is pulled by the supporting beam 1 to perform spreading operation, the left movable block and the right movable block of the spreading device bracket 12 respectively push the left and right adjusting shafts of the bracket in the chute to move, so that the driving bracket 11c, the roller driving device 11, the first rotary roller 6, the second rotary roller 7, the brush roller 10 and the like move together; and meanwhile, the first rotary roller 6, the second rotary roller 7 and the brush roller 10 rotate to sweep and roll the spreading plane.
FIG. 8 is an assembly view of a paver frame and roller-driving apparatus of an embodiment of a paver for a 3D printing apparatus of the invention; FIG. 9 is an enlarged view of a portion of FIG. 8; according to the embodiment of the present invention, as shown in fig. 8 and 9, the elongated sliding grooves provided on the left movable block 12a and the right movable block 12b are not straight sliding grooves, the sliding grooves on the left movable block 12a are left low and right high, the sliding grooves on the right movable block 12b are left high and right low, and the left section and the right section are both in smooth transition, so that the sliding of the support adjusting shafts (11 a and 11 b) in the sliding grooves is ensured to be free. The non-horizontal chute is designed to create a height difference between the first and second rotating rollers 6, 7 for compaction. When the spreading device moves leftwards to perform spreading operation, the left bracket adjusting shaft 11a is positioned at the rightmost end of the sliding groove of the left bracket movable block 12a, and the right bracket adjusting shaft 11b is positioned at the rightmost end of the sliding groove of the right bracket movable block 12b, as shown in fig. 10; the left support adjusting shaft 11a is higher than the right support adjusting shaft 11b, so that the first rotating roller 6 is lower than the second rotating roller 7, and the height difference is t, as shown in fig. 11; at this time, after the material layer paved by the paving device is brushed and pre-pressed and leveled by the rotating roller II 7, the upper plane of the material layer is equal to the lower arc surface of the rotating roller II 7 in height, and is compacted by the rotating roller I6 in rolling, and the compact thickness is t. When the spreading device moves rightwards to perform spreading operation, the left bracket adjusting shaft 11a is positioned at the leftmost end of the sliding groove of the left bracket movable block 12a, and the right bracket adjusting shaft 11b is positioned at the leftmost end of the sliding groove of the right bracket movable block 12b, as shown in fig. 10; the left adjusting shaft 11a of the bracket is lower than the right adjusting shaft 11b of the bracket, so that the first rotating roller 6 is higher than the second rotating roller 7, and the height difference is t, as shown in fig. 12; at this time, after the material layer paved by the paving device is brushed and pre-pressed and leveled by the first rotary roller 6, the upper plane of the material layer is equal to the lower arc surface of the first rotary roller 6 in height, and is compacted by the second rotary roller 7 in rolling, so that the compact thickness is t.
According to a specific embodiment of the present invention, the t value is determined according to parameters such as the type, particle size, shape, nature of the curing agent and regulator used, etc. of the powder material used. According to the value of t, the shapes of the left and right sections of the sliding grooves of the movable blocks (12 a and 12 b) of the bracket are designed, and the height difference of the left and right sections and the distance between the left and right movable blocks are determined; the larger the requirement t, the larger the height difference setting of the left and right sections of the chute, and the smaller the distance setting of the left movable block 12a and the right movable block 12 b. After the design of the spreading device is finished, the bracket movable blocks (12 a and 12 b) are manufactured into serial standard movable blocks which are suitable for various working conditions and are distinguished by t values according to the t values and the distances between the left movable block and the right movable block which are determined by calculation, and the standard movable blocks are selected.
According to the specific embodiment of the invention, the bracket adjusting shafts (11 a and 11 b) and the bracket movable blocks (12 a and 12 b) are made of wear-resistant materials or are subjected to surface treatment to have better wear resistance.
According to a specific embodiment of the invention, the method for paving the 3D printing equipment by using the paving device comprises the following steps:
1) Calculating a compressible thickness value t of the paving layer according to the type, granularity and shape of the powder material, the viscosity parameters of the curing agent and the regulator, and selecting corresponding paving bracket movable blocks (12 a and 12 b) according to the value t;
2) Installing selected movable blocks (12 a and 12 b) of the spreading support on the spreading support, detecting fit gaps of support adjusting shafts (11 a and 11 b) in sliding grooves of the movable blocks of the support, and ensuring flexibility of movement;
3) Starting 3D printing equipment, wherein the spreading device starts to work, the spreading device moves leftwards to perform spreading operation, the support beam 1 drives the spreading device support 12 to move leftwards, the spreading device support 12 pushes the support 11C to move, the support left adjusting shaft 11a is positioned at the rightmost end of a chute of the support left movable block 12a, the support right adjusting shaft 11b is positioned at the rightmost end of a chute of the support right movable block 12b, and the support left adjusting shaft 11a is higher than the support right adjusting shaft 11b, so that the first rotary roller 6 is lower than the second rotary roller 7, and the height difference is t; at the moment, after a material layer paved by the paving device is brushed and pre-pressed and flattened by a rotating roller II 7 rotating reversely, the upper plane of the material layer is equal to the lower arc surface of the rotating roller II 7 in height, the material layer is compacted by a rotating roller I6 rotating positively, and the compacting and compressing thickness of the material layer is t;
4) After reaching the leftmost end of the printing working area, the spreading device reverses again and moves rightwards to perform spreading operation, the spreading device bracket 12 pushes the bracket 11C to move rightwards, the bracket left adjusting shaft 11a is positioned at the leftmost end of the sliding groove of the bracket left movable block 12a, and the bracket right adjusting shaft 11b is positioned at the leftmost end of the sliding groove of the bracket right movable block 12 b; the left adjusting shaft 11a of the bracket is lower than the right adjusting shaft 11b of the bracket, so that the first rotating roller 6 is higher than the second rotating roller 7, and the height difference is t; at the moment, after a material layer paved by the paving device is brushed and pre-pressed and flattened by a first rotating roller 6 which rotates reversely, the upper plane of the material layer is equal to the lower arc surface of the first rotating roller 6 in height, the material layer is compacted by a second rotating roller 7, and the compacting thickness of the material layer is t;
5) Repeating the step 3) and the step 4) until the preset printing layer number is all completed.
In summary, according to the spreading device for the 3D printing equipment, the closable and adjustable blanking opening is adopted, the active and reverse rotating roller is adopted to brush and sweep the powdery material layer, the forward rotating roller is adopted to roll and compress the powdery material layer, the variable height difference t is utilized to ensure the compactness of the powdery material layer, and the compactness of a 3D printing product is improved; meanwhile, the problems of material waste, environmental pollution and the like caused by incapability of closing the sand outlet are solved.
According to another embodiment of the present invention, the left support adjusting shaft 11a and the right support adjusting shaft 11b may be disposed on the paving device support 12, where the left support movable block 12a and the right support movable block 12b may be disposed on the roller driving support 11c, and when the left support movable block 12a and the right support movable block 12b are disposed on the roller driving support 11c, the sliding grooves on the left support movable block 12a are left high and right low, and the sliding grooves on the right support movable block 12b are left low and right high, and the left section and the right section are both smoothly transited, so as to ensure that the left support adjusting shafts (11 a and 11 b) slide freely in the sliding grooves. According to this embodiment, it will be appreciated by those skilled in the art that the detailed structures of the left and right support shafts 11a and 11b may be changed, for example, in shape, length, fixing manner, whether a sleeve or a bearing is added, etc., and also fall within the scope of the present invention.
According to another embodiment of the present invention, the above-mentioned matching of the bracket left adjusting shaft 11a and the bracket right adjusting shaft 11b with the bracket left movable block 12a and the bracket right movable block 12b belongs to an example of a primary-secondary matching, and it is conceivable for a person skilled in the art that the function is to realize that after changing the laying direction of the laying device, the lower arc surface of the front roller relative to the laying direction of the laying device is higher than the lower arc surface of the rear roller, and the height difference is t; to achieve this, the long-shaped sliding grooves of the left bracket movable block 12a and the right bracket movable block 12b may be vertically arranged, and an automatic pulling device is provided, wherein when the 3D printing apparatus is used for paving left, the pulling device pulls the left bracket adjusting shaft 11a high and/or pulls the right bracket adjusting shaft 11b low, and when the 3D printing apparatus is used for paving right, the pulling device pulls the left bracket adjusting shaft 11a low and/or pulls the right bracket adjusting shaft 11b high; the lower arc surface of the front roller of the spreading device relative to the spreading direction is higher than the lower arc surface of the rear roller, and the height difference is t. Or in the matching of the left bracket adjusting shaft 11a and the right bracket adjusting shaft 11b with the left bracket movable block 12a and the right bracket movable block 12b, one of the left bracket adjusting shaft 11a and the left bracket movable block 12a may be fixed, for example, the left bracket adjusting shaft 11a and the right bracket movable block 12a are fixedly installed, and the right bracket adjusting shaft 11b and the right bracket movable block 12b are movably matched, which also belongs to the protection scope of the present invention.
According to another embodiment of the invention, the cooperation of the roller driving device (11) and the support (12) of the spreading device (specifically, for example, the cooperation of the left support adjusting shaft 11a and the right support adjusting shaft 11b with the left support movable block 12a and the right support movable block 12 b) is realized by the function that after the spreading direction of the spreading device is changed, the lower arc surface of the front roller of the spreading device relative to the spreading direction is higher than the lower arc surface of the rear roller, and the height difference is t; the roller driving device (11) and the spreading device support (12) are matched, the left-right height difference t can be formed in a hinged rotation mode of the approximate rotation swing arm, and automatic control during spreading reversing of the spreading device for the 3D printing equipment is realized through automatic control of a driver. According to this embodiment, it is conceivable for the person skilled in the art that the cooperation of the roller drive (11) and the laying device holder (12) can be realized by other mechanisms or structures, which are likewise within the scope of the invention.
In the description of the present invention, it should be understood that the terms "mounted," "connected," "secured," and the like are to be construed broadly, as well as being either fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art within the scope of the application, as well as variations in the detailed description and application of the application may occur to those skilled in the art in light of the teachings of the application.
Claims (10)
- A spreading device for a 3D printing apparatus for applying a powder material for 3D printing in a print job area, characterized in that,Comprising the following steps:At least one storage bin (2) being an elongate cavity spanning the print work area, movable within the print work area;the length of the blanking cavity can partially or completely cover the printing working area and is communicated with the storage bin (2), and a long blanking opening (41) with the length which can partially or completely cover the printing working area is arranged at the lower part of the blanking cavity;The first rotary roller (6) is a circular roller with the length of one or more sections of combined materials being more than or equal to the feeding opening (41), and is arranged at the lower part of the storage bin (2) and at the rear part of the feeding cavity (4); when the spreading device works, the first rotary roller (6) rotates, and the linear speed direction of the first rotary roller is the same as or opposite to the moving direction of the spreading device;and/or a second rotating roller (7), which is a circular roller with the length of one section or more than or equal to the length of the discharging opening (41) after being combined, is arranged at the lower part of the storage bin (2) and is arranged at the rear part of the discharging cavity (4); when the spreading device works, the rotation direction of the second rotary roller (7) is opposite to the rotation direction of the first rotary roller (6), or the linear speed direction of the second rotary roller (7) is opposite to or the same as the movement direction of the spreading device;the 3D printing equipment paving device also comprises a roller driving device (11);The roller driving device (11) comprises a driving bracket (11 c), and the first rotating roller (6) and the second rotating roller (7) are arranged on the driving bracket (11 c);The roller driving bracket (11 c) is provided with a bracket left adjusting shaft (11 a) and a bracket right adjusting shaft (11 b); the bracket adjusting shafts (11 a, 11 b) can set and adjust the height difference t between the first rotary roller (6) and the second rotary roller (7);The spreading device for the 3D printing equipment further comprises a spreading device support (12), wherein the upper end of the spreading device support (12) is connected with the supporting beam (1) and synchronously moves with the spreading device for the 3D printing equipment, and the spreading device support (12) is connected with the roller driving device (11) to drive the roller driving device (11) to move;A left bracket movable block (12 a) and a right bracket movable block (12 b) are arranged on the spreading device bracket (12);The support movable blocks (12 a and 12 b) are provided with strip-shaped sliding grooves, the support left adjusting shaft (11 a) is arranged in the sliding groove of the support left movable block (12 a) to move, and the support right adjusting shaft (11 b) is arranged in the sliding groove of the support right movable block (12 b) to move;The sliding grooves on the left movable block (12 a) of the spreading support are arranged in a left-low right-high or left-high right-low or vertical or horizontal mode, the sliding grooves on the right movable block (12 b) of the spreading support are arranged in a left-high right-low or left-low right-high or horizontal mode or vertical mode, and the positions of the left support adjusting shaft (11 a) and the right support adjusting shaft (11 b) can be set and adjusted through the sliding grooves.
- 2. The paving apparatus for 3D printing equipment according to claim 1, wherein,The spreading device for the 3D printing equipment further comprises a brush roller (10), bristles are arranged on the outer circumference of the brush roller, and the brush roller is equal to the first rotating roller (6) and the second rotating roller (7) in length, and can continuously rotate and brush to remove foreign matters adhered on the first rotating roller (6) and the second rotating roller (7).
- 3. The paving apparatus for 3D printing equipment according to claim 1, wherein,And a height difference t is arranged between the first rotating roller (6) and the second rotating roller (7), and the height difference t is smaller than or equal to a compressible thickness value of a spreading layer formed by the spreading device for the 3D printing equipment.
- 4. The paving apparatus for 3D printing equipment according to claim 2, wherein,The roller drive (11) is capable of setting and adjusting a height difference t between the first (6) and second (7) rotating rollers.
- 5. The paving apparatus for 3D printing equipment according to claim 4, wherein,The brush roller (10) is mounted on the drive bracket (11 c).
- 6. A paving apparatus for 3D printing equipment according to claim 3, wherein,The spreading device support (12) is arranged to be able to set and adjust the rotation angle of the roller drive (11).
- 7. The paver for a 3D printing apparatus according to any one of claims 1 to 6, wherein,The blanking cavity (4) is a space limited by a fixed side plate (42), a bottom plate (43) and a movable side plate (44); the movable side plate (44) is hinged to the lower portion of the storage bin (2), and a blanking opening (41) with adjustable size is formed between the bottom plate (43) and the movable side plate (44).
- 8. The paving apparatus for 3D printing equipment according to claim 7, wherein,The blanking opening (41) is provided with an adjusting device (9), the adjusting device (9) is connected with the movable side plate (44), and the angle of the movable side plate (44) can be adjusted in a locking mode, so that the size of an opening of the blanking opening (41) is changed, the outflow amount of powder materials is controlled, and the powder materials can stop flowing out at the minimum.
- 9. The paver for a 3D printing apparatus according to any one of claims 1 to 6, wherein,The spreading device for the 3D printing equipment further comprises a vibrating device (8) and/or a material activating device (5) arranged at the bottom of the storage bin, wherein the vibrating device (8) shakes and activates the printed powder material, so that the powder material entering the blanking cavity (4) is loose and free from caking; the material activating device (5) is used for activating and scattering the printed powder material, so that the powder material entering the blanking cavity (4) is loose, and the agglomeration and adhesion conditions are avoided.
- 10. A method of using the 3D printing apparatus-use paving device according to claim 1, comprising the steps of:1) Calculating a compressible thickness value t of the paving layer according to the type, granularity and shape of the powder material, the viscosity parameters of the curing agent and the regulator, and configuring a corresponding roller driving device (11) and/or a corresponding paving device bracket (12) according to the value t;2) Detecting the fit clearance between the roller driving device (11) and the spreading device bracket (12), so as to ensure flexible movement;3) Starting 3D printing equipment, starting to work the spreading device, enabling the spreading device to move leftwards to perform spreading operation, enabling the supporting beam (1) to drive the spreading device support (12) to move leftwards, enabling the spreading device support (12) to push the support (11C) to move, enabling the first rotating roller (6) to be lower than the second rotating roller (7), and enabling the height difference to be t; at the moment, after a material layer paved by the paving device is brushed and pre-pressed and leveled by a rotating roller II (7) rotating clockwise, the upper plane of the material layer is equal to the lower arc surface of the rotating roller II (7), the material layer is rolled and compacted by a rotating roller I (6) rotating anticlockwise, and the compacting and compressing thickness of the material layer is t;4) After reaching the leftmost end of the printing working area, the spreading device reverses again and moves rightwards to perform spreading operation, and a spreading device bracket (12) pushes a bracket (11C) to move rightwards, so that a first rotating roller (6) is higher than a second rotating roller (7), and the height difference is t; at the moment, after the material layer paved by the paving device is brushed and pre-pressed and flattened by the rotating roller I (6) rotating anticlockwise, the upper plane of the material layer is equal to the lower arc surface of the rotating roller I (6), the material layer is compacted by rolling by the rotating roller II (7) rotating clockwise, and the compacting thickness of the material layer is t;5) Repeating the step 3) and the step 4) until the preset printing layer number is all completed.
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| CN201810675926.9A CN108773070B (en) | 2018-06-27 | 2018-06-27 | Spreading device for 3D printing equipment and spreading method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109910298A (en) * | 2019-03-15 | 2019-06-21 | 共享智能铸造产业创新中心有限公司 | A kind of 3D printer power spreading device of adjustable opening |
| CN112917918A (en) * | 2020-12-25 | 2021-06-08 | 武汉路然科技有限责任公司 | 3D printing material laminating method |
| CN114474723A (en) * | 2022-01-07 | 2022-05-13 | 张涵文 | Make powder shop powder equipment fast |
| CN114393823B (en) * | 2022-01-20 | 2024-04-09 | 中国科学院空间应用工程与技术中心 | Multi-material 3D printing equipment and method |
| CN115416297B (en) * | 2022-10-22 | 2023-01-24 | 河北智达维创电子科技有限公司 | 3D prints material thin layer stone device |
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| CN108773070A (en) | 2018-11-09 |
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Effective date of registration: 20240228 Address after: 241204 Chungu 3D Printing Industrial Park, Fanchang Economic Development Zone, Fanchang County, Wuhu City, Anhui Province Applicant after: Shared Intelligent Equipment (Anhui) Co.,Ltd. Country or region after: China Address before: 750021 science and technology building and office building of small and medium sized enterprise entrepreneurial base in economic and Technological Development Zone, 330 Huanghe Road, Xixia District, Yinchuan City, Ningxia Hui Autonomous Region Applicant before: NATIONAL INTELLIGENT FOUNDRY INDUSTRY INNOVATION CENTER Country or region before: China |
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