CN114290667B - Shop's powder device and 3D printer - Google Patents
Shop's powder device and 3D printer Download PDFInfo
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- CN114290667B CN114290667B CN202111646908.6A CN202111646908A CN114290667B CN 114290667 B CN114290667 B CN 114290667B CN 202111646908 A CN202111646908 A CN 202111646908A CN 114290667 B CN114290667 B CN 114290667B
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- 239000000843 powder Substances 0.000 title claims abstract description 553
- 230000007480 spreading Effects 0.000 claims abstract description 184
- 238000007599 discharging Methods 0.000 claims abstract description 178
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 49
- 230000009471 action Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010146 3D printing Methods 0.000 abstract description 2
- 238000007639 printing Methods 0.000 description 7
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 206010051814 Eschar Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 231100000333 eschar Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention relates to the technical field of 3D printing, in particular to a powder paving device and a 3D printer. The powder spreading device comprises a workbench, a powder box, a powder discharging assembly and a powder spreading assembly; the workbench is provided with a powder discharging area and a powder spreading area; the powder box is arranged above the powder discharging area; the powder discharging component is connected with the powder box; the powder spreading component is movably connected with the workbench along a preset direction; the powder discharging assembly is in transmission connection with the powder spreading assembly to drive the powder discharging assembly to quantitatively discharge materials to the powder discharging area and spread the materials in the powder discharging area to the powder spreading area. The powder paving device can simplify the structure of the powder paving device and reduce control points in the operation process, so that the manufacturing cost can be reduced.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a powder paving device and a 3D printer.
Background
The SLS3D printing equipment is characterized in that powder is paved layer by layer in a forming area, then the powder is selectively scanned according to the cross-sectional shape of a part through laser, so that the powder which is the same as the cross-sectional shape area is melted, and the powder is selectively melted through repeated powder conveying and powder paving of a powder paving device, so that the forming of a workpiece is achieved. However, such a molding method has problems of a large number of control points, a complex structure, and high manufacturing cost.
Disclosure of Invention
The invention aims to provide a powder spreading device and a 3D printer, which can simplify the structure of the powder spreading device and reduce control points in the operation process, thereby reducing the manufacturing cost.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a powder spreading device, which comprises a workbench, a powder box, a powder discharging assembly and a powder spreading assembly;
the workbench is provided with a powder discharging area and a powder spreading area; the powder box is arranged above the powder discharging area; the powder discharging component is connected with the powder box; the powder spreading component is movably connected with the workbench along a preset direction;
the powder discharging assembly is in transmission connection with the powder spreading assembly to drive the powder discharging assembly to quantitatively discharge materials to the powder discharging area and spread the materials in the powder discharging area to the powder spreading area.
In an alternative embodiment, the powder discharging assembly comprises a powder discharging shaft and a transmission gear, wherein the powder discharging shaft is rotatably arranged at a discharge hole of the powder box, and the transmission gear is connected with the powder discharging shaft;
the transmission gear is used for being in transmission connection with the powder paving component so as to drive the lower powder shaft to rotate relative to the powder box, and the powder box is used for quantitatively conveying materials in the powder box to a lower powder area or blocking a discharge hole.
In an alternative embodiment, the powder containing groove is formed in the powder discharging shaft and is formed in the extending direction of the discharging hole; the powder discharging shaft is provided with a first position and a second position under the driving action of the powder spreading assembly;
when the powder discharging shaft is positioned at the first position, the powder containing groove faces the powder box and is communicated with the discharging hole, and the powder containing groove is used for containing materials falling from the powder box;
when the powder discharging shaft is positioned at the second position, the powder containing groove faces the workbench, the materials contained in the powder containing groove fall to the powder discharging area, and the discharging hole is blocked.
In an alternative embodiment, the powder spreading assembly comprises a powder spreading frame and a rack;
the powder spreading frame is movably connected with the workbench along a preset direction;
the rack is connected with the powder paving frame and is used for being matched with the transmission gear, and the rack is used for driving the transmission gear to rotate so as to drive the powder discharging shaft to change positions between the first position and the second position.
In an alternative embodiment, the number of teeth of the rack and the transmission gear is half of the number of teeth of the transmission gear;
when the powder spreading frame moves from the outer side of the powder discharging area to the direction close to the powder spreading area along the preset direction, the rack is used for driving the powder discharging shaft to move from the first position to the second position;
when the powder spreading frame moves from the powder spreading area to the outside direction of the powder lowering area along the preset direction, the rack is used for driving the powder discharging shaft to move from the second position to the first position.
In an alternative embodiment, the powder spreading assembly further comprises a powder spreading roller; the powder spreading roller is connected with the powder spreading frame;
the powder spreading roller is used for spreading the materials in the powder feeding area to the powder spreading area when the powder spreading frame moves from the outer side of the powder feeding area to the direction close to the powder spreading area along the preset direction.
In an alternative embodiment, the powder spreading device further comprises a multi-belt connected to the table and extending in a predetermined direction; the powder spreading roller is rotatably connected with the powder spreading frame;
one end of the powder spreading roller is provided with a multi-escrow belt wheel matched with the multi-escrow belt and a tensioning block attached to the multi-escrow belt;
when the powder laying assembly moves relative to the workbench along a preset direction, the multi-escrow belt wheel rotates under the action of the multi-escrow belt and the tensioning block.
In an alternative embodiment, the powder spreading device further comprises a back plate and a linear motor;
the back plate is fixedly connected with the workbench, and the powder spreading frame is movably connected with the back plate along a preset direction;
the linear motor is used for driving the powder paving frame to move relative to the back plate along a preset direction.
In an alternative embodiment, the powder spreading device comprises two powder boxes and two powder discharging components, and the two powder discharging components are respectively connected with the two powder boxes;
the workbench is also provided with two powder discharging areas which are distributed along a preset direction, and the powder spreading area is positioned between the two powder discharging areas;
the two powder boxes are respectively positioned above the two powder discharging areas.
In a second aspect, the invention provides a 3D printer, the 3D printer comprising a forming cylinder, a piston plate and the powder spreading device;
the powder spreading area is provided with an opening;
the forming cylinder is connected with the workbench and is positioned below the workbench; the piston plate is slidably connected to the forming cylinder and positioned at the opening.
The beneficial effects of the embodiment of the invention include:
the powder spreading device comprises a workbench, a powder box, a powder discharging assembly and a powder spreading assembly; the workbench is provided with a powder discharging area and a powder spreading area; the powder box is arranged above the powder discharging area; the powder discharging component is connected with the powder box; the powder spreading component is movably connected with the workbench along a preset direction; the powder discharging assembly is in transmission connection with the powder spreading assembly to drive the powder discharging assembly to quantitatively discharge materials to the powder discharging area and spread the materials in the powder discharging area to the powder spreading area.
The powder paving device is in the working process, can be in transmission connection with the powder paving component through the movement of the powder paving component relative to the workbench along the preset direction so as to drive the powder discharging component to quantitatively discharge the powder in the powder discharging area, and can be used for paving the materials in the powder discharging area to the powder discharging area. Therefore, the powder laying assembly can be controlled to move, the powder laying step and the powder laying step are completed, the structure of the powder laying device can be simplified through the mode, control points in the powder laying device are reduced, and the manufacturing cost of the powder laying device can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first view angle of a powder spreading device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a second view angle of a powder spreading device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a third view angle of the powder spreading device according to the embodiment of the present invention;
FIG. 4 is a schematic view of the powder container and the powder discharging assembly according to the embodiment of the present invention;
FIG. 5 is a schematic view of a powder discharge assembly according to an embodiment of the present invention;
FIG. 6 is a schematic view of the structure of the powder feeding shaft in the first position according to the embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the powder feeding shaft in the first two-position according to the embodiment of the present invention;
FIG. 8 is a schematic view of a first view of a powder paving assembly according to an embodiment of the present disclosure;
FIG. 9 is a schematic view of a second view of a powder paving assembly according to an embodiment of the present disclosure;
FIG. 10 is a partial schematic view of FIG. 3A;
FIG. 11 is a schematic view of a third view of a powder paving assembly according to an embodiment of the present disclosure;
fig. 12 is a partial schematic view at B in fig. 11.
Icon: 100-powder spreading device; 110-a workbench; 120-powder box; 130-a powdering component; 140-a powder spreading component; 111-a powdering area; 112-a powder spreading area; 131-a powder feeding shaft; 132-a transmission gear; 133-a powder containing groove; 134-bearings; 135-end cap; 136-a sealing ring; 141-a powder spreading frame; 142-racks; 143-a powder spreading roller; 144-multiple patient belt; 145—multiple eschar pulleys; 146-tensioning block; 147-backboard; 148-linear motor; 201-a forming cylinder; 202-a piston plate; 150-a first powder box; 160-a second powder bin; 170-a first breading assembly; 180-a second breading assembly; 113-a first powdering zone; 114-a second powdering zone; 171-a first transmission gear; 172-a first powder feeding shaft; 181-a second transmission gear; 182-second breading shaft.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1 to 3, fig. 1 to 3 show a structure of a powder spreading device according to an embodiment of the present invention; the present embodiment provides a powder spreading device 100, where the powder spreading device 100 includes a workbench 110, a powder box 120, a powder discharging assembly 130 and a powder spreading assembly 140;
the table 110 includes a powder discharging area 111 and a powder spreading area 112; the powder box 120 is arranged above the powder discharging area 111; the powder discharging assembly 130 is connected with the powder box 120; the powder spreading assembly 140 is movably connected with the workbench 110 along a preset direction;
the powder discharging assembly 130 is in driving connection with the powder spreading assembly 140 to drive the powder discharging assembly 130 to quantitatively discharge the materials in the powder discharging area 111 to the powder spreading area 112.
The working principle of the powder paving device 100 is as follows:
referring to fig. 1-3, the powder spreading device 100 includes a workbench 110, a powder box 120, a powder discharging assembly 130 and a powder spreading assembly 140; the table 110 includes a powder discharging area 111 and a powder spreading area 112; the powder box 120 is arranged above the powder discharging area 111; the powder discharging assembly 130 is connected with the powder box 120; the powder spreading assembly 140 is movably connected with the workbench 110 along a preset direction; the powder discharging assembly 130 is in driving connection with the powder spreading assembly 140 to drive the powder discharging assembly 130 to quantitatively discharge the materials in the powder discharging area 111 to the powder spreading area 112.
In the working process of the powder paving device 100, through the movement of the powder paving component 140 relative to the workbench 110 along the preset direction, the powder paving device can be in transmission connection with the powder paving component 140 to drive the powder discharging component 130 to quantitatively discharge the powder to the powder discharging area 111, and the materials in the powder discharging area 111 are paved to the powder paving area 112. Thus, the powder discharging step and the powder spreading step can be completed by controlling the movement of the powder spreading assembly 140, and the structure of the powder spreading device 100 can be simplified and the control points in the powder spreading device 100 can be reduced by adopting the method, so that the manufacturing cost of the powder spreading device 100 can be reduced.
It should be noted that, as described above, in the process of moving the powder paving assembly 140 along the preset direction relative to the workbench 110, the material in the powder discharging area 111 can be paved to the powder paving area 112 through the movement of the powder paving assembly 140, and the powder discharging assembly 130 can be further driven to quantitatively discharge the material to the powder discharging area 111 through the linkage with the powder discharging assembly 130, so that the nodes for controlling the movement of the powder discharging assembly 130 can be reduced in the process of controlling, that is, the control points for controlling the discharging in the powder paving device 100 can be reduced.
Further, referring to fig. 1 to 7, fig. 1 to 3 illustrate the structure of the powder discharging assembly according to the embodiment of the present invention; in this embodiment, the powder spreading device 100 includes two powder boxes 120 and two powder discharging assemblies 130, and the two powder discharging assemblies 130 are respectively connected with the two powder boxes 120; the workbench 110 is also provided with two powder discharging areas 111, the two powder discharging areas 111 are arranged along a preset direction, and a powder spreading area 112 is positioned between the two powder discharging areas 111; and two powder bins 120 are respectively located above the two powder discharging areas 111.
Thus, by means of the arrangement mode, the powder paving assembly 140 can move along the preset direction to drive the two powder discharging assemblies 130 to quantitatively discharge materials to the powder discharging areas 111, and the materials in the two powder discharging areas 111 are paved to the powder paving area 112. In the present embodiment, since the two powder feeding units 130 are identical in structure, the following description will take the movement relationship between one of the powder feeding units 130 and the powder laying unit 140 as an example.
Specifically, in the present embodiment, the powder discharging assembly 130 includes a powder discharging shaft 131 and a transmission gear 132, the powder discharging shaft 131 is rotatably disposed at the discharge port of the powder container 120, and the transmission gear 132 is connected with the powder discharging shaft 131;
the transmission gear 132 is in transmission connection with the powder paving component 140, so as to drive the lower powder shaft 131 to rotate relative to the powder box 120, and quantitatively convey the materials in the powder box 120 to the lower powder zone 111 or block a discharge hole.
Therefore, when the powder paving component 140 moves to a position matched with the transmission gear 132 of the powder discharging component 130 along the preset direction, the transmission gear 132 can be driven to rotate by the powder paving component 140, so that the powder discharging shaft 131 is driven to rotate relative to the powder box 120, and materials in the powder box 120 are quantitatively conveyed to the powder discharging area 111 or blocked off from a discharging hole, and quantitative discharging is finished. It should be noted that, when the lower powder shaft 131 is installed, in order to improve the tightness at the discharge port and make the lower powder shaft 131 rotatably connected with the powder box 120, both ends of the lower powder shaft 131 are provided with an end cover 135, a sealing ring 136 and a bearing 134, the lower powder shaft 131 is rotatably connected with the powder box 120 through the bearing 134, the sealing ring 136 is used for sealing the rotation connection part of the lower powder shaft 131 and the powder box 120, and the end cover 135 is used for sealing both ends of the lower powder shaft 131.
Further, referring to fig. 1 to 7, in order to enable the lower powder shaft 131 to rotate relative to the powder box 120 to perform quantitative discharging, the lower powder shaft 131 is provided with a powder accommodating groove 133, and the powder accommodating groove 133 is provided along the extending direction of the discharge hole; the accommodating groove is used for accommodating a certain amount of materials; the powder discharging shaft 131 is provided with a first position and a second position under the driving action of the powder spreading component 140;
specifically, when the lower powder shaft 131 is at the first position, the powder containing groove 133 faces the powder box 120, and the powder containing groove 133 is communicated with the discharge port, and the powder containing groove 133 is used for containing the material falling from the powder box 120; at this time, since the powder containing groove 133 is communicated with the discharge port, the material in the powder box 120 falls into the powder containing groove 133 until the powder containing groove 133 is full of the material; that is, when the lower powder shaft 131 is at the first position, the lower powder shaft 131 completes the step of quantitative feeding;
when the powder discharging shaft 131 is at the second position, the powder containing groove 133 faces the workbench 110, the material contained in the powder containing groove 133 falls to the powder discharging area 111, and the discharging hole is blocked. At this time, since the powder containing groove 133 faces the workbench 110 and is blocked from the discharge hole, the material in the powder containing groove 133 drops into the powder discharging area 111; that is, when the discharging shaft 131 is at the second position, the discharging shaft 131 completes the step of quantitatively discharging;
it should be noted that, in other embodiments of the present invention, the powder laying assembly 140 may also drive the powder discharging shaft 131 to rotate, so that the discharge port of the powder box 120 is conducted or blocked with the powder discharging area 111 below, and quantitative discharging is achieved by controlling the conducting time and the conducting flow.
Further, referring to fig. 1 to 12, fig. 8 to 12 illustrate the structure of the powder spreading assembly according to the embodiment of the present invention; in the present embodiment, when the powder spreading assembly 140 is provided, the powder spreading assembly 140 includes a powder spreading frame 141 and a rack 142;
the powder spreading frame 141 is movably connected with the workbench 110 along a preset direction;
the rack 142 is connected with the powder spreading rack 141, the rack 142 is used for being matched with the transmission gear 132, and the rack 142 is used for driving the transmission gear 132 to rotate so as to drive the lower powder shaft 131 to change positions between the first position and the second position.
Therefore, through such arrangement, the powder laying frame 141 can move along the preset direction relative to the workbench 110, so as to drive the rack 142, thereby driving the powder feeding shaft 131 to change positions between the first position and the second position through the cooperation of the rack 142 and the transmission gear 132, and driving the powder feeding shaft 131 to complete the quantitative feeding step or the quantitative discharging step.
Specifically, when the rack 142 is provided, the number of teeth of the rack 142 matched with the transmission gear 132 is half of the number of teeth of the transmission gear 132; the purpose of this arrangement is to enable the rack 142 to be automatically disengaged from the transmission gear 132 after the step of quantitative feeding or the step of quantitative discharging is completed when the rack 142 is engaged with the transmission gear 132 and drives the powder discharging shaft 131 to rotate.
When the powder spreading frame 141 moves from the outer side of the powder discharging area 111 to the direction approaching the powder spreading area 112 along the preset direction, the rack 142 is used for driving the powder discharging shaft 131 to move from the first position to the second position;
when the powder spreading frame 141 moves from the powder spreading area 112 to the outside of the powder spreading area 111 in a preset direction, the rack 142 is used to drive the lower powder shaft 131 to move from the second position to the first position.
Further, to enable the powder spreading assembly 140 to spread the material in the lower powder zone 111 to the powder spreading zone 112, the powder spreading assembly 140 further comprises a powder spreading roller 143; the powder spreading roller 143 is connected with the powder spreading frame 141;
the powder spreading roller 143 is used for spreading the material in the powder feeding area 111 to the powder spreading area 112 when the powder spreading frame 141 moves from the outer side of the powder feeding area 111 to the direction approaching the powder spreading area 112 along the preset direction.
It should be noted that, as described above, when the powder spreading frame 141 moves from the outer side of the powder feeding area 111 to the direction approaching the powder feeding area 112 along the preset direction, the rack 142 is used to drive the powder feeding shaft 131 to move from the first position to the second position; at this time, since the powder discharging shaft 131 is at the second position, the material in the powder containing groove 133 falls into the powder discharging area 111; with the continued movement of the laying frame 141 in the same direction, the laying roller 143 can be driven to lay down the material in the lower powder zone 111 to the powder zone 112.
In the process of spreading the material in the lower powder zone 111 to the powder spreading zone 112 by the powder spreading roller 143, in order to enable the material to be spread to the powder spreading zone 112, the powder spreading device 100 further comprises a multi-traction belt 144, wherein the multi-traction belt 144 is connected with the workbench 110 and extends along a preset direction; the powder spreading roller 143 is rotatably connected with the powder spreading frame 141; one end of the spreader roll 143 is provided with a multi-escrow pulley 145 that mates with the multi-escrow belt 144, and a tensioning block 146 that is attached to the multi-escrow belt 144;
when the powder spreading assembly 140 moves relative to the workbench 110 along a preset direction, the multi-belt wheel 145 rotates under the action of the multi-belt 144 and the tensioning block 146, so that the powder spreading roller 143 can be driven to synchronously rotate through the rotation of the multi-belt wheel 145, and further the compaction of materials can be realized through the rotation of the powder spreading roller 143, so that the spreading of the materials is completed.
It should be noted that, in this embodiment, to drive the powder spreading assembly 140 to move, the powder spreading device 100 further includes a back plate 147 and a linear motor 148; the back plate 147 is fixedly connected with the workbench 110, and the powder spreading frame 141 is movably connected with the back plate 147 along a preset direction; the linear motor 148 is used to drive the powder spreading frame 141 to move in a predetermined direction relative to the back plate 147. While other types of driving may be employed in embodiments of the present invention.
Based on the above, in the present embodiment, since the powder paving apparatus 100 includes two powder bins 120 and two powder discharging assemblies 130, referring to fig. 1 to 12, the following working steps of the powder paving apparatus 100 are as follows:
it should be noted that, for convenience of description, the two powder boxes 120 are the first powder box 150 and the second powder box 160, the two powder discharging assemblies 130 are the first powder discharging assembly 170 and the second powder discharging assembly 180, and the two powder discharging areas 111 are the first powder discharging area 113 and the second powder discharging area 114, respectively; wherein the first powder discharging area 113, the powder spreading area 112 and the second powder discharging area 114 are arranged along a preset direction, the first powder discharging assembly 170 is connected with the first powder box 150, and the second powder discharging assembly 180 is connected with the second powder box 160; and the first powder tank 150 is located above the first powder-discharging area 113, and the second powder tank 160 is located above the second powder-discharging area 114; the transmission gear 132 of the first powder feeding assembly 170 is a first transmission gear 171, the powder feeding shaft 131 of the first powder feeding assembly 170 is a first powder feeding shaft 172, the transmission gear 132 of the second powder feeding assembly 180 is a second transmission gear 181, and the powder feeding shaft 131 of the second powder feeding assembly 180 is a second powder feeding shaft 182;
firstly, taking an initial position of the powder paving component 140 in the powder paving device 100 as an example, taking the powder paving area 112 as a position, after powder paving is started, the powder paving frame 141 moves towards the first powder discharging area 113 under the driving action of the linear motor 148, and the powder paving roller 143 and the rack 142 are driven to synchronously move while the powder paving frame 141 moves;
after the rack 142 moves to be meshed with the first transmission gear 171 of the first powder feeding assembly 170, along with the movement of the powder laying frame 141 along the same direction, the first transmission gear 171 is driven to rotate, so as to drive the first powder feeding shaft 172 to rotate, at this time, the first powder feeding shaft 172 rotates from the second position to the first position, and the first powder feeding shaft 172 starts to feed quantitatively;
after the powder spreading frame 141 moves to the outside of the first powder discharging box 120 in a preset direction, the rack 142 is disengaged from the first transmission gear 171;
then, by controlling the linear motor 148, the powder spreading frame 141 moves towards the second powder discharging area 114 under the driving action of the linear motor 148, and the powder spreading roller 143 and the rack 142 are driven to synchronously move while the powder spreading frame 141 moves;
after the rack 142 moves to be meshed with the first transmission gear 171 of the first powder feeding assembly 170, along with the movement of the powder laying frame 141 along the same direction, the first transmission gear 171 is driven to rotate, and then the first powder feeding shaft 172 is driven to rotate, at this time, the first powder feeding shaft 172 rotates from the first position to the second position, and the first powder feeding shaft 172 starts to quantitatively feed;
subsequently, after the powder placement frame 141 moves to the inside of the first powder discharge tank 120 in the preset direction, the rack 142 is disengaged from the first transmission gear 171; along with the movement of the powder spreading frame 141 along the same direction, the powder spreading roller is driven to contact with the material in the powder discharging area 111, and the powder spreading roller rotates under the action of the multi-belt pulley 145 and the tensioning block 146, so that the compaction of the material can be realized through the rotation of the powder spreading roller 143, and the spreading of the material is completed;
along with the movement of the powder paving frame 141 along the same direction, after the powder paving frame 141 moves to the inner side of the second powder discharging box 120 along the preset direction, after the rack 142 moves to be meshed with the second transmission gear 181 of the second powder discharging assembly 180, the second transmission gear 181 is driven to rotate along with the movement of the powder paving frame 141 along the same direction, and then the second powder discharging shaft 182 is driven to rotate, at this time, the second powder discharging shaft 182 rotates from the second position to the first position, and the second powder discharging shaft 182 starts to quantitatively feed;
along with the movement of the powder spreading frame 141 along the same direction, after the powder spreading frame 141 moves to the outer side of the second powder discharging box 120 along the preset direction, the rack 142 is disengaged from the second transmission gear 181;
then, by controlling the linear motor 148, the powder spreading frame 141 moves towards the first powder discharging area 113 under the driving action of the linear motor 148, and the powder spreading roller 143 and the rack 142 are driven to synchronously move while the powder spreading frame 141 moves;
after the rack 142 moves to be meshed with the second transmission gear 181 of the second powder discharging assembly 180, along with the movement of the powder paving frame 141 along the same direction, the second transmission gear 181 is driven to rotate, and then the second powder discharging shaft 182 is driven to rotate, at this time, the second powder discharging shaft 182 rotates from the first position to the second position, and the second powder discharging shaft 182 starts to quantitatively discharge;
subsequently, after the powder spreading frame 141 moves to the inside of the second powder discharging box 120 in the preset direction, the rack 142 is disengaged from the second transmission gear 181; along with the movement of the powder spreading frame 141 along the same direction, the powder spreading roller is driven to contact with the material in the powder discharging area 111, and the powder spreading roller rotates under the action of the multi-belt pulley 145 and the tensioning block 146, so that the compaction of the material can be realized through the rotation of the powder spreading roller 143, and the spreading of the material is completed;
along with the movement of the powder spreading frame 141 in the same direction, the powder spreading assembly 140 moves to an initial position;
repeating the steps until printing is completed.
Thus, based on the above steps, the powder spreading device 100 can realize bidirectional powder spreading through one linear motor 148 in the working process, so that the working efficiency can be improved, and the printing speed can be further improved.
In summary, the powder spreading device 100 has the following advantages:
the steps of powder discharging and powder spreading are linked, so that control points in the device are reduced, the cost is reduced, and the practicability is improved;
through the cooperation of the transmission gear 132 and the rack 142, quantitative powder feeding can be realized through the arrangement of the accommodating groove, and through calculating the relation between the size of the powder groove and the powder amount, the powder feeding accuracy is improved, and the powder overflow is effectively reduced;
the bidirectional powder spreading is realized, and the printing speed is greatly improved;
the powder spreading roller 143 can drive the powder spreading roller 143 to rotate under the friction force of the multi-escrow belt 144 by the compression of the multi-escrow belt 144 and the multi-escrow belt wheel 145 in the process of moving the powder spreading frame 141, so that the materials can be compacted; the compactness of the printing workpiece is improved, so that the quality of the printing workpiece is improved.
With reference to fig. 1-12, the present invention provides a 3D printer, the 3D printer includes a forming cylinder 201, a piston plate 202, and the powder spreading device 100;
the powder spreading area 112 is provided with an opening;
the molding cylinder 201 is connected to the table 110 and is located below the table 110; the piston plate 202 is slidably connected to the forming cylinder 201 and is located at the opening.
The piston plate 202 can move relative to the opening under the action of external force and further float relative to the opening, so that after a layer of laid material is melted and molded, the piston plate can move into the molding cylinder 201 and further maintain the position relative to the opening, and further the next layer of laid material is conveniently carried out; further, the printing can be completed stepwise in this way.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a shop's powder device which characterized in that:
the powder spreading device comprises a workbench, a powder box, a powder discharging assembly and a powder spreading assembly;
the workbench is provided with a powder discharging area and a powder spreading area; the powder box is arranged above the powder discharging area; the powder discharging component is connected with the powder box; the powder spreading component is movably connected with the workbench along a preset direction;
the powder discharging assembly is in transmission connection with the powder spreading assembly so as to drive the powder discharging assembly to quantitatively discharge materials to the powder discharging area and spread the materials in the powder discharging area to the powder spreading area;
the powder discharging assembly comprises a powder discharging shaft and a transmission gear, wherein the powder discharging shaft is rotatably arranged at a discharge hole of the powder box, and the transmission gear is connected with the powder discharging shaft;
the transmission gear is in transmission connection with the powder paving component so as to drive the powder discharging shaft to rotate relative to the powder box, so that materials in the powder box are quantitatively conveyed to the powder discharging area or blocked by the discharging hole;
the powder containing groove is formed in the powder discharging shaft and is formed in the extending direction of the discharging hole; the powder discharging shaft is provided with a first position and a second position under the driving action of the powder paving component;
when the powder discharging shaft is positioned at the first position, the powder containing groove faces the powder box and is communicated with the discharge hole, and the powder containing groove is used for containing materials falling from the powder box;
when the powder discharging shaft is positioned at the second position, the powder containing groove faces the workbench, the materials contained in the powder containing groove fall to the powder discharging area, and the discharging hole is blocked;
the powder spreading assembly comprises a powder spreading frame and a rack;
the powder spreading frame is movably connected with the workbench along the preset direction;
the rack is connected with the powder paving frame and is used for being matched with the transmission gear, and the rack is used for driving the transmission gear to rotate so as to drive the powder discharging shaft to change positions between the first position and the second position;
the number of teeth of the rack matched with the transmission gear is half of the number of teeth of the transmission gear;
when the powder spreading frame moves from the outer side of the powder discharging area to the direction close to the powder spreading area along the preset direction, the rack is used for driving the powder discharging shaft to move from the first position to the second position;
when the powder spreading frame moves from the powder spreading area to the outer side of the powder discharging area along the preset direction, the rack is used for driving the powder discharging shaft to move from the second position to the first position.
2. A powder spreading device according to claim 1, wherein:
the powder spreading assembly further comprises a powder spreading roller; the powder spreading roller is connected with the powder spreading frame;
the powder spreading roller is used for spreading the materials in the powder discharging area to the powder spreading area when the powder spreading frame moves from the outer side of the powder discharging area to the direction close to the powder spreading area along the preset direction.
3. A powder spreading device according to claim 2, wherein:
the powder spreading device further comprises a multi-escrow belt which is connected with the workbench and extends along the preset direction; the powder spreading roller is rotatably connected with the powder spreading frame;
one end of the powder spreading roller is provided with a multi-escrow belt wheel matched with the multi-escrow belt and a tensioning block attached to the multi-escrow belt;
when the laying assembly moves in the predetermined direction relative to the table, the multi-belt wheel rotates under the influence of the multi-belt and the tensioning block.
4. A powder spreading device according to claim 1, wherein:
the powder spreading device also comprises a back plate and a linear motor;
the back plate is fixedly connected with the workbench, and the powder spreading frame is movably connected with the back plate along the preset direction;
the linear motor is used for driving the powder paving frame to move relative to the back plate along the preset direction.
5. Powder spreading device according to any one of claims 1-4, characterized in that:
the powder spreading device comprises two powder boxes and two powder discharging components, and the two powder discharging components are respectively connected with the two powder boxes;
the workbench is further provided with two powder discharging areas, the two powder discharging areas are arranged along the preset direction, and the powder spreading area is positioned between the two powder discharging areas;
the two powder boxes are respectively positioned above the two powder discharging areas.
6. A 3D printer, characterized in that:
the 3D printer comprising a forming cylinder, a piston plate, and a powder spreading device according to any one of claims 1-5;
the powder spreading area is provided with an opening;
the forming cylinder is connected with the workbench and is positioned below the workbench; the piston plate is slidably connected to the forming cylinder and is positioned at the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111646908.6A CN114290667B (en) | 2021-12-29 | 2021-12-29 | Shop's powder device and 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111646908.6A CN114290667B (en) | 2021-12-29 | 2021-12-29 | Shop's powder device and 3D printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114290667A CN114290667A (en) | 2022-04-08 |
| CN114290667B true CN114290667B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111646908.6A Active CN114290667B (en) | 2021-12-29 | 2021-12-29 | Shop's powder device and 3D printer |
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| Country | Link |
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| CN (1) | CN114290667B (en) |
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| WO2016151783A1 (en) * | 2015-03-24 | 2016-09-29 | 技術研究組合次世代３Ｄ積層造形技術総合開発機構 | Powder supplying device, method for controlling powder supplying device, program for controlling powder supplying device, and three-dimensional shaping device |
| CN106696260A (en) * | 2017-03-17 | 2017-05-24 | 南京增材制造研究院发展有限公司 | 3D (three-dimensional) printing powder delivery and paving linkage type bidirectional powder paving device and equipment |
| CN106984817A (en) * | 2017-05-28 | 2017-07-28 | 安徽科元三维技术有限公司 | Power spreading device for 3D printer |
| CN111163881A (en) * | 2017-10-06 | 2020-05-15 | 株式会社Ihi | Powder supply device and three-dimensional lamination molding device |
| CN111702178A (en) * | 2020-07-29 | 2020-09-25 | 天津清研智束科技有限公司 | Powder paving device and additive manufacturing device |
| CN111940729A (en) * | 2019-05-17 | 2020-11-17 | 天津斯沃姆科技发展有限公司 | Powder paving device and application thereof |
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2021
- 2021-12-29 CN CN202111646908.6A patent/CN114290667B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016151783A1 (en) * | 2015-03-24 | 2016-09-29 | 技術研究組合次世代３Ｄ積層造形技術総合開発機構 | Powder supplying device, method for controlling powder supplying device, program for controlling powder supplying device, and three-dimensional shaping device |
| CN106696260A (en) * | 2017-03-17 | 2017-05-24 | 南京增材制造研究院发展有限公司 | 3D (three-dimensional) printing powder delivery and paving linkage type bidirectional powder paving device and equipment |
| CN106984817A (en) * | 2017-05-28 | 2017-07-28 | 安徽科元三维技术有限公司 | Power spreading device for 3D printer |
| CN111163881A (en) * | 2017-10-06 | 2020-05-15 | 株式会社Ihi | Powder supply device and three-dimensional lamination molding device |
| CN111940729A (en) * | 2019-05-17 | 2020-11-17 | 天津斯沃姆科技发展有限公司 | Powder paving device and application thereof |
| CN111702178A (en) * | 2020-07-29 | 2020-09-25 | 天津清研智束科技有限公司 | Powder paving device and additive manufacturing device |
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|---|---|
| CN114290667A (en) | 2022-04-08 |
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