CN114770940B - 3D prints scraper mechanism and printer - Google Patents
3D prints scraper mechanism and printer Download PDFInfo
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- CN114770940B CN114770940B CN202210462128.4A CN202210462128A CN114770940B CN 114770940 B CN114770940 B CN 114770940B CN 202210462128 A CN202210462128 A CN 202210462128A CN 114770940 B CN114770940 B CN 114770940B
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/35—Cleaning
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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
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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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention belongs to the technical field of 3D printing, and provides a 3D printing scraper mechanism and a printer, wherein the 3D printing scraper mechanism comprises a support, a scraper component, a cleaning component and a sliding transmission component; the sliding transmission assembly and the cleaning assembly are arranged on the support, and the scraper assembly is connected with the sliding transmission assembly. The cleaning assembly includes a cleaning roller and a rotational drive. Through the scraper subassembly with slide the material operation of spreading of carrying on in the drive assembly can the charging tray, solve because the relatively poor reason of photosensitive resin mobility, distribute unevenly in the charging tray, influence the problem of the quality that 3D printed. Meanwhile, the cleaning assembly is arranged, so that the scraper assembly can be cleaned, the problem of photosensitive resin residue on the scraper assembly is prevented, and secondary paving operation is prevented from being influenced. The printer of this scheme can make the photosensitive resin material of different colours pass through the magazine and get into compounding device allotment colour to control photosensitive resin's output quantity, the material volume of the photosensitive resin in the accurate control charging tray.
Description
Technical Field
The invention belongs to the technical field of 3D printing equipment, and particularly relates to a 3D printing scraper mechanism and a printer.
Background
3D color printing is one of the developing directions in the field of 3D printing. In the current 3D printing industry, three-dimensional spray bonding molding can achieve color printing, but it uses powder material molding — the powder is used to "print" the cross section of the part on the material powder by means of a binder (such as silica gel) through a nozzle. However, parts bonded with adhesives have low strength, require subsequent processing, and have rough molding surfaces.
Different from the three-dimensional spraying bonding forming technology, the photocuring forming printer has the advantages of high printing speed and high forming precision, and the printed product can be comparable to the durable plastic part formed by injection molding in the aspects of material property, detail, surface finish and the like. However, currently, the photo-curing molding printing apparatus can print only one material at a time, and can print only a single color.
The existing photocuring rapid prototyping technology is a typical layer-by-layer manufacturing method, photosensitive resin is used as a raw material, and the photosensitive resin is cured by ultraviolet light in a liquid state to form a solid part. And a 405nm ultraviolet light source of the LED displays a picture according to the layered section information of the part under the control of the control panel file through the LCD screen. The photosensitive resin in the material groove and the ultraviolet light of the display picture are subjected to curing reaction to form a layered section of the part; after one layer is cured, the work platform is raised by a distance equal to the thickness of the layer, and then the LCD screen displays the next layer section, so that the layers are tightly connected and the gaps between the layers are eliminated. Repeating the steps until the whole part is molded. The method can be used for manufacturing sample pieces with any complex structures.
However, metal or carbon fiber components and the like are added into photosensitive resin, the flowability is poor, the printing material needs to be spread, and the current 3D printer is used for monochrome printing, so that the real color appearance of the model cannot be realized, and the higher requirements of users are met.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a 3D printing scraper mechanism, which solves the problems that the flowability of photosensitive resin is poor and the material laying treatment cannot be performed.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a 3D printing squeegee mechanism comprising:
the device comprises a support, a scraper assembly, a cleaning assembly and a sliding transmission assembly;
the sliding transmission assembly and the cleaning assembly are arranged on the support, and the scraper assembly is connected with the sliding transmission assembly;
the scraper component comprises a scraper knife rest, a scraper mounting frame and a scraper body, an elastic connecting component for connection and buffering is arranged between the scraper knife rest and the scraper mounting frame, the scraper body is arranged on the scraper knife rest, and the scraper mounting frame is connected with the sliding transmission end of the sliding transmission component;
the cleaning assembly comprises a cleaning roller and a rotation driving device, the driving end of the rotation driving device is connected with the cleaning roller, and the outer edge surface of the cleaning roller is in contact with the scraper knife body and enables the elastic connecting assembly to be in a squeezed state.
Preferably, elastic connection subassembly includes first connecting plate, second connecting plate and spring leaf, first connecting plate and second connecting plate respectively through bolt spare with scraper knife rest one side, scraper mounting bracket one side are connected, first connecting plate with the second connecting plate contacts and sliding fit, the both ends of spring leaf respectively with the bolt spare of first connecting plate department, the bolt spare of second connecting plate department are connected.
Preferably, the elastic connecting assembly further comprises an air bag piece, an air bag placing position for placing the air bag piece is arranged on the scraper mounting frame, clamping groove portions are arranged on two sides of the air bag piece, clamping protruding portions matched with the clamping groove portions are arranged on the air bag placing position, and the top of the air bag piece is arc-shaped and is in contact with the scraper mounting frame;
the other side of the scraper knife rest is provided with a connecting block which is L-shaped and is abutted against the scraper mounting frame.
Preferably, the scraper body is strip-shaped and arranged along the extending direction of the scraper knife rest;
the scraper knife rest comprises a scraper body mounting surface for mounting the scraper body, a pressing plate piece and a fixing bolt are arranged on the scraper body mounting surface for fixing the scraper body, and the fixing bolt penetrates through the pressing plate piece and the scraper body and acts on the pressing plate piece to tightly press the scraper body;
the cleaning assembly further comprises a cleaning water pipe and a spray head, one end of the cleaning water pipe is connected with the spray head, a channel for the cleaning water pipe to pass through is arranged on the scraper knife rest and the scraper mounting frame, and a conduit seat for the cleaning water pipe to pass through is arranged on the scraper mounting frame.
Preferably, the number of the cutter body mounting surfaces is two, the two cutter body mounting surfaces are symmetrically arranged relative to the center line of the scraper holder, a cleaning surface is arranged between the two cutter body mounting surfaces, the cleaning surface is concave, and the spray head is arranged at the cleaning surface.
Preferably, the slip transmission assembly comprises a first rotating motor, a first coupler, a first screw rod piece, a rail piece, a first screw rod fixing seat and a first sliding block, the driving end of the first rotating motor is connected with the first screw rod piece through the first coupler, the first screw rod piece is connected with the first screw rod fixing seat in a rotating mode, a first thread sleeve in thread fit with the first screw rod piece is arranged on the first sliding block, the first thread sleeve is in thread fit with the first sliding block piece in a rotating mode, the first sliding block is connected with the scraper assembly, the scraper assembly is in sliding fit with the rail piece, and the rail piece is arranged in parallel with the first screw rod piece.
The invention also discloses a printer which comprises a rack, wherein the 3D printing scraper mechanism, a material tray, a material mixing device and a material box are arranged on the rack;
the quantity of magazine is more than two, just the magazine with the compounding device is connected, the exit end of compounding device with the charging tray is corresponding, the compounding device includes the compounding cavity be equipped with on the compounding device be used for right the compounding cavity carries out the rabbling mechanism of compounding.
Preferably, a flow control mechanism is arranged at the communication position of the mixing device and the material box, and the flow control mechanism comprises a control valve and a flow meter.
Preferably, the stirring mechanism comprises a stirring driving motor and a stirrer, the driving end of the stirring driving motor is connected with the stirrer, the stirrer is located in the mixing cavity, and a heating device for heating the mixing cavity is further arranged on the mixing device.
Preferably, the machine frame is further provided with a forming platform for printing and forming.
Compared with the prior art, the invention has the beneficial effects that:
3D in this scheme prints scraper mechanism, through the scraper subassembly with slide the transmission subassembly can the charging tray in the operation of spreading the material, solve because the relatively poor reason of photosensitive resin mobility, distribute unevenly in the charging tray, influence the problem of the quality that 3D printed. Meanwhile, the cleaning assembly is arranged, so that the scraper assembly can be cleaned, the problem of photosensitive resin residue on the scraper assembly is prevented, and secondary paving operation is prevented from being influenced. The printer of this scheme can make the photosensitive resin material of different colours pass through the magazine and get into compounding device allotment colour to control photosensitive resin's output quantity, the material volume of the photosensitive resin in the accurate control charging tray.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the present invention.
Figure 2 is a schematic diagram of the construction of the doctor assembly of the invention.
Figure 3 is a schematic cross-sectional view of a doctor assembly of the invention.
FIG. 4 is a schematic structural diagram of the scraper assembly and the sweeping assembly of the present invention.
FIG. 5 is a schematic structural view of the blade assembly and the glide actuator assembly of the present invention viewed from above.
Fig. 6 is a schematic structural diagram of the mixing device of the present invention.
Wherein:
1-frame, 2-3D printing doctor mechanism, 201-frame, 202-doctor blade holder, 203-doctor mounting frame, 204-doctor blade body, 205-cleaning roller, 206-first connecting plate, 207-second connecting plate, 208-spring plate, 209-bolt, 210-air bag, 211-air bag placing position, 212-connecting block, 213-blade body mounting surface, 214-pressing plate, 215-fixing bolt, 216-cleaning water pipe, 217-spray head, 218-cleaning surface, 219-first rotating motor, 220-first coupling, 221-first screw rod, 223-rail, 224-first screw rod fixing seat, 225-first slide block, 3-material tray, 4-material mixing device, 401-stirring driving motor, 402-stirrer, 5-material box, 6-forming platform.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments of the present invention, belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example (b):
as shown in fig. 1 to 6, the present embodiment provides a printer, which includes a frame 1, wherein the frame 1 is provided with a 3D printing scraper mechanism 2, a tray 3, a mixing device 4, a material box 5, and a forming platform 6 for printing and forming;
the 3D printing scraper mechanism 2 comprises a support 201, a scraper component, a cleaning component and a sliding transmission component;
the sliding transmission assembly and the cleaning assembly are arranged on the support 201, and the scraper assembly is connected with the sliding transmission assembly;
the scraper component comprises a scraper knife rest 202, a scraper mounting frame 203 and a scraper body 204, an elastic connecting component for connection and buffering is arranged between the scraper knife rest 202 and the scraper mounting frame 203, the scraper body 204 is arranged on the scraper knife rest 202, and the scraper mounting frame 203 is connected with the sliding transmission end of the sliding transmission component;
the cleaning assembly comprises a cleaning roller 205 and a rotary driving device, the driving end of the rotary driving device is connected with the cleaning roller 205, and the outer edge surface of the cleaning roller 205 is in contact with the scraper knife body 204 and enables the elastic connecting assembly to be in a pressed state.
In this scheme, scraper assembly carries out planar motion through the corresponding position of the transmission subassembly that slides and charging tray 3, and planar motion means that the bottom of scraper cutter body 204 keeps unchangeable almost to the distance on resin material's surface, has included the length direction translation along charging tray 3, or the width direction translation along charging tray 3, and the purpose of above planar motion is in order to solve because the relatively poor reason of photosensitive resin mobility, the photosensitive resin in the charging tray 3 that arouses distributes unevenly, and then influences the quality of printing. The scraper assembly can overcome the problem of poor flowability of the photosensitive resin, so that the photosensitive resin is fully paved on the tray 3.
Meanwhile, after the spreading operation of the planar motion is performed, since there is a photosensitive resin residue on the blade body 204, the blade body 204 needs to be operated in order not to affect the next spreading operation. The scraper component is moved to the position of the cleaning component through the slippage transmission component, and the cleaning roller 205 is driven to rotate through the rotation driving device of the cleaning component, so that the cleaning work of the residual photosensitive resin is carried out on the scraper component.
In order to enhance the cleaning effect of the cleaning assembly, the elastic connection assembly is additionally arranged, so that an elastic structure is arranged between the scraper knife rest 202 and the scraper mounting frame 203, and a displacement generating effect is achieved, so that the scraper knife rest 202 can be closer to the cleaning assembly, and on the basis of improving the contact force between the scraper knife rest 202 and the scraper mounting frame 203, the position between the scraper knife rest 202 and the scraper mounting frame 203 can be changed due to the buffering structure, and residues on the scraper knife body 204 can be better cleaned.
In this embodiment, the elastic connection assembly includes a first connection plate 206, a second connection plate 207, and a spring plate 208, the first connection plate 206 and the second connection plate 207 are connected to the doctor blade holder 202 side and the doctor blade mounting frame 203 side through bolt members 209, respectively, the first connection plate 206 is in contact with and slidably fitted to the second connection plate 207, and both ends of the spring plate 208 are connected to the bolt members 209 at the first connection plate 206 and the bolt members 209 at the second connection plate 207, respectively.
Elastic connection subassembly still includes gasbag piece 210, is equipped with the gasbag that is used for placing gasbag piece 210 on scraper mounting bracket 203 and places position 211, and the both sides of gasbag piece 210 are equipped with draw-in groove portion, and the gasbag is placed and is equipped with on the position 211 and put the bellying with draw-in groove portion complex card, and the top of gasbag piece 210 is circular-arc and contacts with scraper mounting bracket 203.
The structure of the elastic connection assembly, the spring piece 208 and the air bag piece 210 have a buffering effect, and it is ensured that the whole structure of the scraper assembly is not damaged due to the action of contact stress when the scraper blade body 204 is in contact with the cleaning assembly. In addition, the compression and the extension of the spring piece 208 can cause the displacement between the first connecting plate 206 and the second connecting plate 207, and the relative angle between the scraper knife rest 202 and the scraper mounting frame 203 can be changed when the air bag piece 210 is extruded by matching with the arc-shaped structure of the top of the air bag piece 210, so that the contact surface between the scraper knife body 204 and the cleaning roller 205 is more sufficient, and the cleaning effect is improved.
In order to ensure the stability of the connection structure between the doctor blade holder 202 and the doctor blade mounting bracket 203, the other side of the doctor blade holder 202 is provided with a connection block 212, and the connection block 212 is L-shaped and abuts against the doctor blade mounting bracket 203.
Specifically, the doctor blade body 204 is elongated and is disposed along the extending direction of the doctor blade holder 202.
The structure and cleaning assembly for doctor blade holder 202 is described:
in this embodiment, the doctor blade holder 202 includes a blade body mounting surface 213 for mounting the doctor blade body 204, a pressing plate member 214 and a fixing bolt 215 for fixing the doctor blade body 204 are disposed on the blade body mounting surface 213, and the fixing bolt 215 passes through the pressing plate member 214 and the doctor blade body 204 and acts on the pressing plate member 214 to press the doctor blade body 204;
the cleaning assembly further comprises a cleaning water pipe 216 and a spray head 217, one end of the cleaning water pipe 216 is connected with the spray head 217, a channel for the cleaning water pipe 216 to pass through is arranged on the scraper knife rest 202 and the scraper mounting frame 203, and a conduit seat for the cleaning water pipe 216 to pass through is arranged on the scraper mounting frame 203.
Specifically, the number of the cutter body mounting surfaces 213 is two, and the two cutter body mounting surfaces 213 are symmetrically arranged relative to the center line position of the doctor blade holder 202, a cleaning surface 218 is arranged between the two cutter body mounting surfaces 213, the cleaning surface 218 is concave, and the spray head 217 is arranged at the cleaning surface 218.
The cleaning surface 218 is of a concave structure, when the scraper knife rest 202 is close to the cleaning assembly, the cleaning roller 205 of the cleaning assembly can enter the concave cleaning surface 218, firstly, the contact between the cleaning roller 205 and the scraper knife bodies 204 on two sides of the cleaning surface 218 can be ensured to be more sufficient, meanwhile, the cleaning water pipe 216 of the cleaning assembly is combined, the structure of the spray head 217 is combined, cleaning sheets in the spray head 217 can be better sprayed onto the cleaning roller 205, residues on the cleaning roller 205 are cleaned, the concave cleaning surface 218 structure can also prevent sprayed cleaning liquid from being sprayed onto the periphery, and the cleanliness of the whole equipment is improved.
In this embodiment, the sliding transmission assembly adopts a screw nut transmission mechanism, and specifically, the sliding transmission assembly includes a first rotating motor 219, a first coupler 220, a first screw rod member 221, a rail member 223, a first screw rod fixing seat 224 and a first sliding block 225, a driving end of the first rotating motor 219 is connected with the first screw rod member 221 through the first coupler 220, the first screw rod member 221 is rotatably connected with the first screw rod fixing seat 224, a first thread sleeve in thread fit with the first screw rod member 221 is arranged on the first sliding block 225, the first thread sleeve is in thread fit with the first sliding block 225, the first sliding block 225 is connected with a scraper assembly, the scraper assembly is in sliding fit with the rail member 223, and the rail member 223 and the first screw rod member 221 are arranged in parallel.
According to the situation that the plane movement needs to be carried out along the length direction of the material tray 3 or along the width direction of the material tray 3, the positions of the track piece 223 and the first wire rod piece 221 are set, and different use requirements are met.
This scheme still has the effect of colored printing simultaneously, in order to realize above-mentioned function:
the quantity of the magazine 5 of this scheme is three, and every magazine 5 is independent is connected with compounding device 4, and the exit end of compounding device 4 is corresponding with charging tray 3, and compounding device 4 includes the compounding cavity, is equipped with on compounding device 4 to be used for carrying out the rabbling mechanism of compounding to the compounding cavity.
Taking the scheme to realize the color printing effect as an example:
three cartridges 5 are connected to the mixing device 4 such that the three photosensitive resins from the three cartridges 5 are collected into the mixing device 4. The above three photosensitive resins are mixed in the mixing device 4 to be a mixed resin having a specific color. The colour of the material in the cartridge 5 can be determined according to the particular use case. Specifically, the photosensitive resins contained in the material box 5 correspond to three primary colors of red, yellow and blue respectively.
In the technical scheme in the embodiment, before the printing process, the printer is mixed to obtain the resin with the specific color, so that the printing effect of any specific color can be realized.
Specifically, a flow control mechanism is arranged at the communication position of the mixing device 4 and the material box 5, and the flow control mechanism comprises a control valve and a flow meter. The flow meter is used for measuring the amount of the resin material conveyed by a certain material box 5 to the material mixing device 4, and the control valve is used for controlling the communication and the closing between the material box 5 and the material mixing device 4 according to the numerical value measured by the flow meter. The flow meter and the control valve are matched for use, so that the proportion of each resin material can be controlled during mixing. The output quantity of the photosensitive resin is further controlled by controlling the discharge quantity of the material box 5, and the material quantity of the photosensitive resin in the material tray 3 is accurately controlled.
In this embodiment, the stirring mechanism includes a stirring driving motor 401 and a stirrer 402, the driving end of the stirring driving motor 401 is connected to the stirrer 402, the stirrer 402 is located in the mixing cavity, and a heating device for heating the mixing cavity is further provided on the mixing device 4. The concrete structure of agitator 402 can adopt the poking bar, and the outer terminal surface of poking bar is equipped with the stirring leaf that is the screw thread form, through stirring driving motor 401's drive, carries out intensive mixing to photosensitive resin in the compounding device 4. The heating device that sets up simultaneously can improve the mobility of resin in the compounding device 4 for the mixing of resin is more even, more can discharge some bubbles that stirring resin in-process produced.
In conclusion, the printer of this scheme has overcome the difficult problem that photocuring 3D printing process is difficult to realize colored printing to the structure sets up rationally. Different from the existing technical scheme (the proportion of the photosensitive resin liquid of a certain color is continuously adjusted in the printing process, and only the gradual-change printing effect can be realized), the printer in the technical scheme in the embodiment mixes the resin of a specific color before the printing process, so that the printing effect of any specific color can be realized. In addition, the scraper component in the scheme solves the problem that the photosensitive resin in the material tray 3 is not uniformly distributed due to poor flowability of the photosensitive resin, so that the printing quality is influenced. The scraper assembly can overcome the problem of poor flowability of the photosensitive resin, so that the photosensitive resin is fully paved on the tray 3. And through the cleaning assembly, residual materials on the scraper assembly can be cleaned, and the resin materials printed in the subsequent process can be prevented from being polluted by the residual materials.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a 3D prints scraper mechanism which characterized in that includes:
the device comprises a support, a scraper assembly, a cleaning assembly and a sliding transmission assembly;
the sliding transmission assembly and the cleaning assembly are arranged on the support, and the scraper assembly is connected with the sliding transmission assembly;
the scraper component comprises a scraper knife rest, a scraper mounting frame and a scraper knife body, an elastic connecting component for connection and buffering is arranged between the scraper knife rest and the scraper mounting frame, the scraper knife body is arranged on the scraper knife rest, and the scraper mounting frame is connected with the sliding transmission end of the sliding transmission component;
the cleaning assembly comprises a cleaning roller and a rotary driving device, the driving end of the rotary driving device is connected with the cleaning roller, and the outer edge surface of the cleaning roller is in contact with the scraper body and enables the elastic connecting assembly to be in a squeezed state;
elastic connection subassembly includes first connecting plate, second connecting plate and spring leaf, first connecting plate and second connecting plate respectively through bolt spare with scraper knife rest one side, scraper mounting bracket one side are connected, first connecting plate with the second connecting plate contacts and sliding fit, the both ends of spring leaf respectively with the bolt spare of first connecting plate department, the bolt spare of second connecting plate department are connected.
2. The 3D printing scraper mechanism according to claim 1, wherein the elastic connection assembly further comprises an air bag member, an air bag placing position for placing the air bag member is arranged on the scraper mounting bracket, clamping groove portions are arranged on two sides of the air bag member, a clamping protruding portion matched with the clamping groove portions is arranged on the air bag placing position, and the top of the air bag member is arc-shaped and is in contact with the scraper mounting bracket;
the other side of the scraper knife rest is provided with a connecting block which is L-shaped and is abutted against the scraper mounting frame.
3. The 3D printing doctor mechanism according to claim 2, wherein the doctor blade body is elongated and arranged along the extension direction of the doctor blade holder;
the scraper knife rest comprises a scraper body mounting surface for mounting the scraper body, a pressing plate piece and a fixing bolt are arranged on the scraper body mounting surface for fixing the scraper body, and the fixing bolt penetrates through the pressing plate piece and the scraper body and acts on the pressing plate piece to tightly press the scraper body;
the cleaning assembly further comprises a cleaning water pipe and a spray head, one end of the cleaning water pipe is connected with the spray head, a channel for the cleaning water pipe to pass through is arranged on the scraper knife rest and the scraper mounting frame, and a conduit seat for the cleaning water pipe to pass through is arranged on the scraper mounting frame.
4. The 3D printing doctor mechanism as claimed in claim 3, wherein the number of the blade body mounting surfaces is two and is symmetrically arranged with respect to a midline position of the doctor blade holder, a cleaning surface is provided between the two blade body mounting surfaces, the cleaning surface is concave, and the nozzle is provided at the cleaning surface.
5. The 3D printing scraper mechanism according to claim 1, wherein the sliding transmission assembly comprises a first rotating motor, a first coupler, a first screw rod piece, a rail piece, a first screw rod fixing seat and a first sliding block, a driving end of the first rotating motor is connected with the first screw rod piece through the first coupler, the first screw rod piece is connected with the first screw rod fixing seat in a rotating mode, a first thread sleeve in threaded fit with the first screw rod piece is arranged on the first sliding block, the first thread sleeve is in threaded fit with the first sliding block piece, the first sliding block is connected with the scraper assembly, the scraper assembly is in sliding fit with the rail piece, and the rail piece is arranged in parallel with the first screw rod piece.
6. A printer comprising a frame, wherein the frame is provided with the 3D printing scraper mechanism, the tray, the mixing device and the magazine according to any one of claims 1 to 5;
the quantity of magazine is more than two, just the magazine with the compounding device is connected, the exit end of compounding device with the charging tray is corresponding, the compounding device includes the compounding cavity be equipped with on the compounding device be used for right the compounding cavity carries out the rabbling mechanism of compounding.
7. A printer according to claim 6, wherein a flow control mechanism is provided at the connection between the mixing device and the cartridge, the flow control mechanism comprising a control valve and a flow meter.
8. The printer according to claim 6, wherein the stirring mechanism includes a stirring driving motor and a stirrer, a driving end of the stirring driving motor is connected to the stirrer, the stirrer is located in the mixing cavity, and a heating device for heating the mixing cavity is further disposed on the mixing device.
9. The printer of claim 6, wherein the frame further comprises a forming platform for printing and forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462128.4A CN114770940B (en) | 2022-04-28 | 2022-04-28 | 3D prints scraper mechanism and printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210462128.4A CN114770940B (en) | 2022-04-28 | 2022-04-28 | 3D prints scraper mechanism and printer |
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| Publication Number | Publication Date |
|---|---|
| CN114770940A CN114770940A (en) | 2022-07-22 |
| CN114770940B true CN114770940B (en) | 2022-11-25 |
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| CN202210462128.4A Active CN114770940B (en) | 2022-04-28 | 2022-04-28 | 3D prints scraper mechanism and printer |
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| CN111167754A (en) * | 2020-02-19 | 2020-05-19 | 深圳市华阳通达精密机械有限公司 | Lifting scraper device capable of automatically cleaning adhesive materials on cutting edge |
| CN210792091U (en) * | 2019-06-19 | 2020-06-19 | 广州黑格智造信息科技有限公司 | Photocuring 3D printing device |
| CN111873433A (en) * | 2020-06-19 | 2020-11-03 | 深圳摩方新材科技有限公司 | Resin coating 3D printing method and system |
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2022
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| DE102014112454A1 (en) * | 2014-08-29 | 2016-03-03 | Exone Gmbh | Coater arrangement for a 3D printer |
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| CN210792091U (en) * | 2019-06-19 | 2020-06-19 | 广州黑格智造信息科技有限公司 | Photocuring 3D printing device |
| CN111167754A (en) * | 2020-02-19 | 2020-05-19 | 深圳市华阳通达精密机械有限公司 | Lifting scraper device capable of automatically cleaning adhesive materials on cutting edge |
| CN111873433A (en) * | 2020-06-19 | 2020-11-03 | 深圳摩方新材科技有限公司 | Resin coating 3D printing method and system |
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| CN114770940A (en) | 2022-07-22 |
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