CN113320157A - 3D printing system with linear reciprocating type circular feeding and control method thereof - Google Patents
3D printing system with linear reciprocating type circular feeding and control method thereof Download PDFInfo
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- CN113320157A CN113320157A CN202110700185.7A CN202110700185A CN113320157A CN 113320157 A CN113320157 A CN 113320157A CN 202110700185 A CN202110700185 A CN 202110700185A CN 113320157 A CN113320157 A CN 113320157A
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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
- B29C64/214—Doctor blades
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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
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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- 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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
A3D printing system with linear reciprocating type circulating feeding comprises a mounting plate, a scraper module, a scraper moving module, a forming module, a feeding module and a lifting module; the mounting plate is provided with a printing groove, and the forming module and the feeding module are respectively connected with the printing groove; the scraper moving module is connected with the scraper module and drives the scraper module to move back and forth, the scraper module comprises a synchronous plate and a scraper, and the scraper is rotationally connected with the synchronous plate; the scraper has a scraping state and a lifting state, and the scraper is switched between the scraping state and the lifting state through rotation. A control method of a 3D printing system adopting linear reciprocating type circular feeding is provided. The invention can be used for spreading redundant materials generated during spreading of the layer into the forming module or scraping the redundant materials back into the feeding module again when the scraper resets each time so as to improve the utilization rate of printing materials and reduce the starting amount of the materials required by printing, and belongs to the technical field of additive manufacturing.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a linear reciprocating type cyclic feeding 3D printing system and a control method thereof.
Background
The 3D printing technology is used as a rapid forming technology, has the unique advantages of forming complex parts, integrated manufacturing, short production period and the like, is widely concerned by experts and scholars at home and abroad in recent years, and is widely applied to the fields of biomedical science, aerospace manufacturing, automobile manufacturing and the like.
The currently common 3D printing technologies mainly include Fused Deposition Modeling (FDM), Selective Laser Sintering (SLS), and stereolithography (SLA/Digital Light Projection, DLP). The fused deposition technology has the problem of low forming precision, and the laser selective melting technology and the photocuring forming technology with high forming precision relate to the paving of printing materials such as metal powder and ceramic slurry. For additive manufacturing equipment adopting a combination of a cylinder and a piston, a circular cylinder and a circular piston are often adopted based on the sealing performance of the piston, but when printing materials, particularly high-viscosity slurry are paved, the circular cylinder needs to provide an amount which is 1 to 3 times larger than the thickness of the printing layer so as to ensure the comprehensive and uniform paving of the materials. However, the material cannot be scraped back for use again when the common straight reciprocating scraper returns, and most of the material is scraped to another storage tank for storage, but the material is further lost and wasted in the process, especially for the material such as ceramic slurry and the like, the material is more attached to the wall surface of the equipment due to high viscosity, so that the material consumed by the completely formed part is often more than the material occupied by the part itself by even several times, the utilization rate of the printing material stored for a single time is low, the material amount required for starting printing is also large, and the defect is particularly prominent when the cost of the printing material is high.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the 3D printing system and the control method thereof have the advantages that the printing efficiency is high, materials can be saved, and the linear reciprocating type circular feeding is realized.
In order to achieve the purpose, the invention adopts the following technical scheme: A3D printing system with linear reciprocating type circulating feeding comprises a mounting plate, a scraper module, a scraper moving module, a forming module, a feeding module and a lifting module; the mounting plate is provided with a printing groove, and the forming module and the feeding module are respectively connected with the printing groove; the scraper moving module is connected with the scraper module and drives the scraper module to move back and forth, the scraper module comprises a synchronous plate and a scraper, and the scraper is rotationally connected with the synchronous plate; the scraper has a scraping state and a lifting state, the cutting edge of the scraper is in contact with the bottom surface of the printing groove in the scraping state, the cutting edge of the scraper is away from the bottom surface of the printing groove in the lifting state, and the scraper is switched between the scraping state and the lifting state through rotation; the lifting-off module comprises a lifting-off plate, the lifting-off plate is movably connected with the mounting plate, and the lifting-off plate is positioned on a moving path of the scraper module; the scraper module moves forward and lifts up the scraper to be the state of lifting up from the board when lifting up from the board, and the scraper module moves backward and keeps the scraping coating state through the scraper when lifting up from the board. After adopting this kind of structure, the scraper is once accomplishing to spread the back, and when continuing to move forward the contact and lift off the board, the scraper is lifted off board jack-up to remaining printing material stays in the original place on making the scraper, after lifting off the board, the scraper whereabouts, resets to the blade coating state, thereby when the backward motion, can back scrape the printing material who stays in the original place.
Preferably, the lifting plate is rotatably connected with the mounting plate, and a first spring for limiting the rotation of the lifting plate is connected between the lifting plate and the mounting plate; the lifting plate in the extending state extends into an area through which the scraper module moves back and forth, and the lifting plate in the contracting state is positioned outside the area through which the scraper module moves back and forth; when the scraper module moves forwards and is lifted away from the plate, the lifted away plate keeps in an extending state, and when the scraper module moves backwards and is lifted away from the plate, the lifted away plate rotates to a contracting state under the extrusion effect of the scraper module. After adopting this kind of structure, the scraper is when the backward motion, because lift off the board and pushed to the shrink state by the scraper module, lifts off the state that the board does not influence the scraper, and the scraper keeps the blade coating state to scrape back printing material.
Preferably, the scraper module further comprises a scraper connecting frame and an adjusting block with adjustable front and back positions, the scraper connecting frame is rotatably connected with the synchronous plate, and the scraper is arranged on the scraper connecting frame; the second spring is connected between the scraper connecting frame and the synchronous plate, the second spring is a torsion spring, the adjusting block is located in front of the scraper, and the second spring faces the adjusting block towards the elastic direction of the scraper. After adopting this kind of structure, when the scraper module does not receive external force, the scraper keeps the blade coating state under the effect of second spring and adjusting block, consequently, after the scraper module is forward through lifting off the board, the scraper can resume to the blade coating state under the effect of second spring.
Preferably, the scraper module further comprises a movement adapter plate, a bolt and a nut, the movement adapter plate is fixedly connected with the synchronous plate, a strip-shaped through hole is formed in the movement adapter plate, a mounting hole for mounting the bolt is formed in the adjusting block, the rod portion of the bolt penetrates through the strip-shaped through hole and the mounting hole, and the nut is matched with the bolt to lock the adjusting block on the movement adapter plate. After adopting this kind of structure, if the angle of covering of needs adjustment scraper before beginning to print, can loosen the nut, make the bolt can slide along bar-shaped through-hole, after the adjusting block moved to suitable position along with the bolt back-and-forth, screwed up the nut, the adjusting block was supported all the time to the scraper link under the effect of second spring to realize the angle modulation of scraper, later the adaptability adjust the height of scraper can.
Preferably, the scraper module further comprises a damping rotating shaft and a bearing seat, the bearing seat is installed on the motion adapter plate, a bearing is arranged in the bearing seat, and the scraper connecting frame is connected with the bearing through the damping rotating shaft.
Preferably, the mounting plate is provided with a storage groove, the side surface of the storage groove is provided with a side opening, the lifting plate is positioned in the storage groove in a contraction state, and the lifting plate extends out of the storage groove from the side opening in an extension state; the lifting plate is a fan-shaped plate, the circle center of the fan-shaped plate is connected with a rotating shaft, and the lifting plate is connected with the mounting plate through the rotating shaft.
As an optimization, the scraper motion module comprises a linear module and a sliding rail, the linear module and the sliding rail are both installed on the installation plate, the linear module is connected with the synchronous plate and drives the synchronous plate to move back and forth, and the synchronous plate is connected with the sliding rail in a sliding manner.
Preferably, the forming module comprises a forming cylinder and a forming piston, a printing platform is fixedly mounted on the forming piston, the feeding module comprises a feeding cylinder and a feeding piston, the forming cylinder and the feeding cylinder are fixedly mounted below the printing groove, a forming cavity and a feeding cavity are respectively formed in the forming cylinder and the feeding cylinder, the forming cavity and the feeding cavity are communicated with the inside of the printing groove, the forming piston is slidably embedded into the forming cavity, and the feeding piston is slidably embedded into the feeding cavity; the forming cavity is positioned in front of the feeding cavity.
Preferably, the 3D printing system with linear reciprocating circular feeding further comprises a light curing module, wherein the light curing module comprises a light source; the forming module further comprises a first lifting platform, the first lifting platform is connected with the forming piston and drives the forming piston to lift, the feeding module further comprises a second lifting platform, and the second lifting platform is connected with the feeding piston and drives the feeding piston to lift.
An initial station, a feeding station, a spreading station and a lifting station are arranged on a moving path of the scraper, the feeding station is positioned above the feeding cavity, the spreading station is positioned above the forming cavity, the initial station is positioned behind the feeding station, the lifting station is positioned in front of the spreading station, and the scraper is in contact with the lifting plate at the lifting station; a control method of a 3D printing system with linear reciprocating type circular feeding comprises the following steps:
s1, controlling the first lifting platform to drive the forming piston to move downwards for one printing layer thickness;
s2, controlling the second lifting platform to drive the feeding piston to move upwards, and pushing the printing material into the printing groove;
s3, controlling the scraper to move forwards between the forming station and the lifting station from the initial station, and accordingly paving the printing material on the printing platform;
s4, controlling a light source to selectively solidify the paved printing material;
s5, controlling the scraper to move forwards continuously to pass through the lift-off station, and controlling the scraper to move backwards to a position between the lift-off station and the forming station after the scraper passes through the lift-off station;
s6, controlling the printing platform to move downwards by one printing layer thickness;
s7, controlling the feeding piston to move downwards;
s8, if the current spreading angle of the scraper is zero, controlling the scraper to move backwards continuously to spread the printing material on the printing platform and return to the initial station, then controlling the light source to selectively cure the spread printing material, and controlling the printing platform to move downwards by a printing layer thickness;
if the current spreading angle of the scraper is not zero, controlling the scraper to continuously move backwards to the initial station;
s9, repeating the steps S2-S8 until the printing of the whole model is finished.
The spreading angle of the scraper is zero, and the scraper is perpendicular to the bottom surface of the printing groove.
S1 and S2 may be performed simultaneously, and S6 and S7 may be performed simultaneously.
In summary, the present invention has the following advantages: according to the invention, after the spreading is finished, the scraper is lifted off the plate, the lifting off plate lifts the scraper off the printing material and continues to move, the scraper falls off the lifting off plate and then drives the redundant printing material to move back, and when the scraper is reset, the redundant printing material is scraped back into the feeding cylinder again for reuse, so that the utilization rate of the stored printing material is improved, and the material starting amount required for printing the same part is reduced.
The invention realizes the circular supply of materials in a purely mechanical mode, does not need an additional collecting device or a driving module, can make the equipment more compact and further reduce the cost, and can improve the material utilization rate during each material paving while reducing the occupied time of the material paving by the aid of the control method.
Drawings
FIG. 1 is a three-dimensional structure diagram of a 3D printing system with linear reciprocating type circular feeding
Fig. 2 is a partial structural schematic diagram of a linear reciprocating type cyclic feeding 3D printing system.
Fig. 3 is an enlarged view of the area a in fig. 2.
Fig. 4 is a perspective view of the doctor module.
Fig. 5 is a perspective view of the connection between the scraper connecting frame and the scraper.
FIG. 6 is a schematic structural diagram of the adjusting block.
Fig. 7 is a perspective view of the feeding module and the forming module.
Fig. 8 is a flowchart of a control method of a linear reciprocating feeding 3D printing system.
Wherein, 1 is the mounting panel, 2 is scraper motion module, 3 is the scraper module, 4 are for lifting from the module, 5 are the shaping jar, 6 are the feed jar, 7 are first lift platform, 8 are second lift platform, 9 are print platform
Reference numeral 11 denotes a printing slot, and 12 denotes a storage slot.
21 is a linear module, and 22 is a slide rail.
31 is a scraper, 32 is a synchronous plate, 33 is a scraper connecting frame, 34 is a motion adapter plate, 35 is an adjusting block, 36 is a damping rotating shaft, 37 is a second spring, and 38 is a bearing seat.
41 is a lift-off plate and 42 is a first spring.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example one
A3D printing system with linear reciprocating type circulating feeding comprises a mounting plate, a scraper module, a scraper moving module, a forming module, a feeding module and a lifting module; the mounting plate is provided with a printing groove, and the forming module and the feeding module are respectively connected with the printing groove; the scraper moving module is connected with the scraper module and drives the scraper module to move back and forth, the scraper module comprises a synchronous plate and a scraper, and the scraper is rotationally connected with the synchronous plate; the scraper has a scraping state and a lifting state, the cutting edge of the scraper is in contact with the bottom surface of the printing groove in the scraping state, the cutting edge of the scraper is away from the bottom surface of the printing groove in the lifting state, and the scraper is switched between the scraping state and the lifting state through rotation; the lifting-off module comprises a lifting-off plate, the lifting-off plate is movably connected with the mounting plate, and the lifting-off plate is positioned on a moving path of the scraper module; the scraper module moves forward and lifts up the scraper to be the state of lifting up from the board when lifting up from the board, and the scraper module moves backward and keeps the scraping coating state through the scraper when lifting up from the board.
The lifting plate is rotatably connected with the mounting plate, and a first spring for limiting the rotation of the lifting plate is connected between the lifting plate and the mounting plate; the lifting plate in the extending state extends into an area through which the scraper module moves back and forth, and the lifting plate in the contracting state is positioned outside the area through which the scraper module moves back and forth; when the scraper module moves forwards and is lifted away from the plate, the lifted away plate keeps in an extending state, and when the scraper module moves backwards and is lifted away from the plate, the lifted away plate rotates to a contracting state under the extrusion effect of the scraper module.
The scraper module also comprises a scraper connecting frame and an adjusting block with adjustable front and back positions, the scraper connecting frame is rotationally connected with the synchronous plate, and the scraper is arranged on the scraper connecting frame; the second spring is connected between the scraper connecting frame and the synchronous plate, the second spring is a torsion spring, the adjusting block is located in front of the scraper, and the second spring faces the adjusting block towards the elastic direction of the scraper.
The scraper module further comprises a movement adapter plate, a bolt and a nut, the movement adapter plate is fixedly connected with the synchronous plate, a strip-shaped through hole is formed in the movement adapter plate, a mounting hole for mounting the bolt is formed in the adjusting block, the rod portion of the bolt penetrates through the strip-shaped through hole and the mounting hole, and the adjusting block is locked on the movement adapter plate through the cooperation of the nut and the bolt.
The scraper module further comprises a damping rotating shaft and a bearing seat, the bearing seat is installed on the motion adapter plate, a bearing is arranged in the bearing seat, and the scraper connecting frame is connected with the bearing through the damping rotating shaft.
The mounting plate is provided with an accommodating groove, the side surface of the accommodating groove is provided with a side opening, the lifting plate is positioned in the accommodating groove in a contraction state, and the lifting plate extends out of the accommodating groove from the side opening in an extension state; the lifting plate is a fan-shaped plate, the circle center of the fan-shaped plate is connected with a rotating shaft, and the lifting plate is connected with the mounting plate through the rotating shaft.
The scraper motion module includes sharp module, slide rail, and sharp module and slide rail are all installed on the mounting panel, and sharp module is connected with synchronous board and drives synchronous board back-and-forth movement, synchronous board and slide rail sliding connection.
The forming module comprises a forming cylinder and a forming piston, a printing platform is fixedly mounted on the forming piston, the feeding module comprises a feeding cylinder and a feeding piston, the forming cylinder and the feeding cylinder are fixedly mounted below the printing groove, a forming cavity and a feeding cavity are respectively formed in the forming cylinder and the feeding cylinder, the forming cavity and the feeding cavity are communicated with the inside of the printing groove, the forming piston is slidably embedded into the forming cavity, and the feeding piston is slidably embedded into the feeding cavity; the forming cavity is positioned in front of the feeding cavity.
The 3D printing system for linear reciprocating type circulating feeding further comprises a light curing module, wherein the light curing module comprises a light source; the forming module further comprises a first lifting platform, the first lifting platform is connected with the forming piston and drives the forming piston to lift, the feeding module further comprises a second lifting platform, and the second lifting platform is connected with the feeding piston and drives the feeding piston to lift.
The adjusting block is provided with an arc surface, and the adjusting block is propped against the scraper connecting frame through the arc surface.
The number of the strip-shaped through holes is two, and the strip-shaped through holes are respectively positioned on two sides of the motion adapter plate.
The scraper module further comprises a spring fixing block, the spring fixing block is fixedly connected with the synchronous plate, straight grooves are formed in the spring fixing block and the scraper connecting frame respectively, one end of a second spring is embedded into the straight grooves in the fixing block, and the other end of the second spring is embedded into the straight grooves in the scraper connecting frame.
The forming cylinder and the feeding cylinder are respectively in threaded connection with the mounting plate.
The first lifting platform and the second lifting platform are respectively provided with a lifting adapter plate, and the first lifting platform and the second lifting platform are respectively connected with the forming cylinder and the feeding cylinder through the lifting adapter plates. The first lifting platform and the second lifting platform are both driven by servo motors and adopt electric cylinders.
The 3D printing system of reciprocating type circulation feed of straight line still includes the frame, and the mounting panel is fixed in the frame.
An initial station, a feeding station, a spreading station and a lifting station are arranged on a moving path of the scraper, the feeding station is positioned above the feeding cavity, the spreading station is positioned above the forming cavity, the initial station is positioned behind the feeding station, the lifting station is positioned in front of the spreading station, and the scraper is in contact with the lifting plate at the lifting station;
a control method of a 3D printing system with linear reciprocating type circular feeding comprises the following steps:
s1, controlling the first lifting platform to drive the forming piston to move downwards for one printing layer thickness;
s2, controlling the second lifting platform to drive the feeding piston to move upwards, and pushing the printing material into the printing groove;
s3, controlling the scraper to move forwards between the forming station and the lifting station from the initial station, and accordingly paving the printing material on the printing platform;
s4, controlling a light source to selectively solidify the paved printing material;
s5, controlling the scraper to move forwards continuously to pass through the lift-off station, and controlling the scraper to move backwards to a position between the lift-off station and the forming station after the scraper passes through the lift-off station;
s6, controlling the printing platform to move downwards by one printing layer thickness;
s7, controlling the feeding piston to move downwards;
s8, if the current spreading angle of the scraper is zero, controlling the scraper to move backwards continuously to spread the printing material on the printing platform and return to the initial station, then controlling the light source to selectively cure the spread printing material, and controlling the printing platform to move downwards by a printing layer thickness;
if the current spreading angle of the scraper is not zero, controlling the scraper to continuously move backwards to the initial station;
s9, repeating the steps S2-S8 until the printing of the whole model is finished.
The spreading angle of the scraper is zero, and the scraper is perpendicular to the bottom surface of the printing groove.
In operation, the operations are performed in the order of S1-S9, wherein S1 and S2 can be performed simultaneously or in an interchangeable order, and S6 and S7 are performed simultaneously or in an interchangeable order.
In step S3, the scraper moves forward rapidly to a position between the feeding station and the forming station, and then moves slowly through the forming station to lay the printing material on the printing platform. In step S8, if the current coverage angle is zero, the scraper is controlled to move backward at a slow speed to cover the printing material, and then reset quickly, and if the current coverage angle is not zero, the scraper is controlled to move backward at a fast speed to reset to the initial station.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a reciprocating type circulation feed's of straight line 3D printing system which characterized in that: the device comprises a mounting plate, a scraper module, a scraper moving module, a forming module, a feeding module and a lifting module;
the mounting plate is provided with a printing groove, and the forming module and the feeding module are respectively connected with the printing groove;
the scraper moving module is connected with the scraper module and drives the scraper module to move back and forth, the scraper module comprises a synchronous plate and a scraper, and the scraper is rotationally connected with the synchronous plate;
the scraper has a scraping state and a lifting state, the cutting edge of the scraper is in contact with the bottom surface of the printing groove in the scraping state, the cutting edge of the scraper is away from the bottom surface of the printing groove in the lifting state, and the scraper is switched between the scraping state and the lifting state through rotation;
the lifting-off module comprises a lifting-off plate, the lifting-off plate is movably connected with the mounting plate, and the lifting-off plate is positioned on a moving path of the scraper module; the scraper module moves forward and lifts up the scraper to be the state of lifting up from the board when lifting up from the board, and the scraper module moves backward and keeps the scraping coating state through the scraper when lifting up from the board.
2. A linear reciprocating feed 3D printing system according to claim 1, wherein: the lifting plate is rotatably connected with the mounting plate, and a first spring for limiting the rotation of the lifting plate is connected between the lifting plate and the mounting plate;
the lifting plate in the extending state extends into an area through which the scraper module moves back and forth, and the lifting plate in the contracting state is positioned outside the area through which the scraper module moves back and forth;
when the scraper module moves forwards and is lifted away from the plate, the lifted away plate keeps in an extending state, and when the scraper module moves backwards and is lifted away from the plate, the lifted away plate rotates to a contracting state under the extrusion effect of the scraper module.
3. A linear reciprocating feed 3D printing system according to claim 1, wherein: the scraper module also comprises a scraper connecting frame and an adjusting block with adjustable front and back positions, the scraper connecting frame is rotationally connected with the synchronous plate, and the scraper is arranged on the scraper connecting frame;
the second spring is connected between the scraper connecting frame and the synchronous plate, the second spring is a torsion spring, the adjusting block is located in front of the scraper, and the second spring faces the adjusting block towards the elastic direction of the scraper.
4. A linear reciprocating feed 3D printing system according to claim 3, wherein: the scraper module further comprises a movement adapter plate, a bolt and a nut, the movement adapter plate is fixedly connected with the synchronous plate, a strip-shaped through hole is formed in the movement adapter plate, a mounting hole for mounting the bolt is formed in the adjusting block, the rod portion of the bolt penetrates through the strip-shaped through hole and the mounting hole, and the adjusting block is locked on the movement adapter plate through the cooperation of the nut and the bolt.
5. A linear reciprocating feed 3D printing system according to claim 3, wherein: the scraper module further comprises a damping rotating shaft and a bearing seat, the bearing seat is installed on the motion adapter plate, a bearing is arranged in the bearing seat, and the scraper connecting frame is connected with the bearing through the damping rotating shaft.
6. A linear reciprocating feed 3D printing system according to claim 2, wherein: the mounting plate is provided with an accommodating groove, the side surface of the accommodating groove is provided with a side opening, the lifting plate is positioned in the accommodating groove in a contraction state, and the lifting plate extends out of the accommodating groove from the side opening in an extension state;
the lifting plate is a fan-shaped plate, the circle center of the fan-shaped plate is connected with a rotating shaft, and the lifting plate is connected with the mounting plate through the rotating shaft.
7. A linear reciprocating feed 3D printing system according to claim 1, wherein: the scraper motion module includes sharp module, slide rail, and sharp module and slide rail are all installed on the mounting panel, and sharp module is connected with synchronous board and drives synchronous board back-and-forth movement, synchronous board and slide rail sliding connection.
8. A linear reciprocating feed 3D printing system according to claim 1, wherein: the shaping module includes the shaping jar, the shaping piston, fixed mounting has print platform on the shaping piston, the feed module includes the feed jar, the feed piston, the equal fixed mounting in the below of printing the groove of shaping jar and feed jar, it has become die cavity and feed chamber to open respectively in shaping jar and the feed jar, become the inside that the groove was printed in die cavity and feed chamber all intercommunication, imbed into the die cavity with shaping piston slidable, during feed piston imbeds the feed chamber slidable, it is located the place ahead in feed chamber to become the die cavity.
9. A linear reciprocating feed 3D printing system according to claim 8, wherein: the light curing module comprises a light source;
the forming module further comprises a first lifting platform, the first lifting platform is connected with the forming piston and drives the forming piston to lift, the feeding module further comprises a second lifting platform, and the second lifting platform is connected with the feeding piston and drives the feeding piston to lift.
10. A control method of a 3D printing system with a linear reciprocating type circular feeding, which adopts the 3D printing system with the linear reciprocating type circular feeding of claim 9, characterized in that: an initial station, a feeding station, a spreading station and a lifting station are arranged on a moving path of the scraper, the feeding station is positioned above the feeding cavity, the spreading station is positioned above the forming cavity, the initial station is positioned behind the feeding station, the lifting station is positioned in front of the spreading station, and the scraper is in contact with the lifting plate at the lifting station;
the control method of the 3D printing system with the linear reciprocating type circular feeding comprises the following steps:
s1, controlling the first lifting platform to drive the forming piston to move downwards for one printing layer thickness;
s2, controlling the second lifting platform to drive the feeding piston to move upwards, and pushing the printing material into the printing groove;
s3, controlling the scraper to move forwards between the forming station and the lifting station from the initial station, and accordingly paving the printing material on the printing platform;
s4, controlling a light source to selectively solidify the paved printing material;
s5, controlling the scraper to move forwards continuously to pass through the lift-off station, and controlling the scraper to move backwards to a position between the lift-off station and the forming station after the scraper passes through the lift-off station;
s6, controlling the printing platform to move downwards by one printing layer thickness;
s7, controlling the feeding piston to move downwards;
s8, if the current spreading angle of the scraper is zero, controlling the scraper to move backwards continuously to spread the printing material on the printing platform and return to the initial station, then controlling the light source to selectively cure the spread printing material, and controlling the printing platform to move downwards by a printing layer thickness;
if the current spreading angle of the scraper is not zero, controlling the scraper to continuously move backwards to the initial station;
s9, repeating the steps S2-S8 until the printing of the whole model is finished.
Priority Applications (1)
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| CN202110700185.7A CN113320157A (en) | 2021-06-23 | 2021-06-23 | 3D printing system with linear reciprocating type circular feeding and control method thereof |
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| CN202110700185.7A CN113320157A (en) | 2021-06-23 | 2021-06-23 | 3D printing system with linear reciprocating type circular feeding and control method thereof |
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| CN113320157A true CN113320157A (en) | 2021-08-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393823A (en) * | 2022-01-20 | 2022-04-26 | 中国科学院空间应用工程与技术中心 | Multi-material 3D printing device and method |
| CN114985774A (en) * | 2022-07-08 | 2022-09-02 | 苏州中科煜宸激光智能科技有限公司 | Powder supply device for compact SLM printer |
| WO2023065785A1 (en) * | 2021-10-19 | 2023-04-27 | 点云生物(杭州)有限公司 | Top-down stereolithography printer apparatus |
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2021
- 2021-06-23 CN CN202110700185.7A patent/CN113320157A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023065785A1 (en) * | 2021-10-19 | 2023-04-27 | 点云生物(杭州)有限公司 | Top-down stereolithography printer apparatus |
| CN114393823A (en) * | 2022-01-20 | 2022-04-26 | 中国科学院空间应用工程与技术中心 | Multi-material 3D printing device and method |
| 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 |
| CN114985774A (en) * | 2022-07-08 | 2022-09-02 | 苏州中科煜宸激光智能科技有限公司 | Powder supply device for compact SLM printer |
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