CN110815494A - Utilize dry ceramic 3D printing device of heating fan - Google Patents
Utilize dry ceramic 3D printing device of heating fan Download PDFInfo
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- CN110815494A CN110815494A CN201911216000.4A CN201911216000A CN110815494A CN 110815494 A CN110815494 A CN 110815494A CN 201911216000 A CN201911216000 A CN 201911216000A CN 110815494 A CN110815494 A CN 110815494A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
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Abstract
The invention discloses a ceramic 3D printing device dried by a heating fan, which comprises a main frame, a printing platform, a ceramic printing device and the heating fan device, wherein the printing platform can lift along a Z axis in the main frame, the ceramic printing device can move along an X axis and a Y axis on the upper part of the main frame, the ceramic printing device comprises a printing needle head, and the printing needle head is arranged on an air blowing path of the heating fan device. This technical scheme utilizes hot blast fluid, and the moisture that slowly, even in printing out the piece with pottery 3D gets rid of, because the heating fan device can not cause direct touching to the pottery printing out the piece, can not influence the structure that the piece was printed out to the 3D pottery, and heating fan device rate of heating is very fast, and is efficient, and the heat transfer is fast, and is sensitive to controlling means reaction, and the controllability is good, compact structure, light in weight can make partial pottery lotion moisture scatter and disappear in the short time, reaches the effect of solidification.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a 3D printing device for removing water from a ceramic 3D printing part by utilizing flowing dry hot air generated by a heating fan and accelerating forming.
Background
The ceramic 3D printing technology is to extrude ceramic paste with high water content and then to form ceramic parts in an overlapping mode. Because the ceramic paste with higher water content has certain fluidity, if the printed ceramic part structure is too high, the phenomenon of collapse easily occurs to the ceramic structure at the bottom layer under the influence of gravity factors, and the whole printing effect is influenced. The existing ceramic 3D printer cannot reinforce a ceramic part which is printed just, and only a point or a part can be processed by a small number of additional devices, so that the water content of a local structure is greatly changed, the shrinkage is not uniform, and the printed ceramic part is cracked.
Disclosure of Invention
In order to fill the blank of the prior art, the invention provides a 3D printing device which utilizes a hot air device to assist ceramic components in rapid dehydration and forming.
The utility model provides an utilize dry ceramic 3D printing device of heating fan, includes the main frame, sets up the print platform in the main frame, sets up the ceramic printing device on main frame upper portion to and set up the heating fan device on the main frame, print platform is in can follow the Z axle and go up and down in the main frame, ceramic printing device is in X axle, Y axle removal can be followed on main frame upper portion, ceramic printing device includes the printing syringe needle, the printing syringe needle set up in on the route of blowing of heating fan device.
Further, the heating fan device comprises a fan support, and a heating sheet and a fan which are fixed on the fan support.
Furthermore, still be provided with temperature sensor on the printing needle, temperature sensor's signal output part connects control chip's signal input part, control chip's signal output part connects the signal input part of piece and fan generate heat.
Further, ceramic printing device is including fixing the printing device base on the main frame to and fix the printing device connecting pipe on the printing device base, the lower extreme of printing device connecting pipe is fixed with the printing syringe needle, the upper end of printing device connecting pipe is fixed with step motor, step motor's output extends through the coupling joint spiral stirring head in the printing device connecting pipe, the printing device connecting pipe still is connected with the feeding hose who carries ceramic pug.
Further, the main frame comprises an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a fixed base, the Z-axis moving mechanism is fixed in the fixed base, and the X-axis moving mechanism and the Y-axis moving mechanism are fixed on the upper portion of the fixed base.
Further, Z axle moving mechanism is including setting up the lift litter and the lift hob of arranging along the Z axle in unable adjustment base to and the lift hob driving motor of drive lift hob, the lift litter is fixed on unable adjustment base bottom frame through the lift litter mounting, lift hob driving motor passes through the motor mounting and fixes on unable adjustment base bottom frame, the lift hob passes through the connector and links to each other with the motor, the lift litter with the lift hob passes respectively print platform, lift hob driving motor rotates and drives the lift hob, and then the drive print platform reciprocates, realizes print platform is at the epaxial removal of Z.
Further, the X-axis moving mechanism comprises an X-axis support frame, the Y-axis moving mechanism comprises a Y-axis support frame, the two X-axis support frames and the two Y-axis support frames are connected to form a rectangular frame, Y-axis slide bars are arranged on the Y-axis support frame, a belt steering seat and a belt driving motor are respectively arranged at two ends of the Y-axis support frame, steering fixed seats which are respectively arranged on the two Y-axis slide bars and can slide along the Y-axis slide bars are further arranged, steering shafts, nuts and steering rollers are arranged in the steering fixed seats, belts changing directions through the steering rollers are further arranged, the belt driving motor is arranged on a motor support through screws, the motor support is fixed at the tail end of the Y-axis support frame, a belt driving wheel is arranged at the upper end of the belt driving motor, an X-axis slide block is arranged on the X-axis slide bars, the X-axis, the tail end of the belt is fixed on the X-axis sliding block, and the whole ceramic printing device can slide on the X axis and the Y axis under the drive of the belt driving motor.
Further, the belt steering seat arranged at the end part of the Y-axis support frame comprises a belt steering pulley shaft and a belt steering pulley, and an X-axis distance sensor and a Y-axis distance sensor which are respectively arranged towards the extending direction of the X-axis slide bar and the extending direction of the Y-axis slide bar are arranged below the belt steering seat and used for measuring and judging the position of the ceramic printing device in the coordinate axis.
The operation device comprises an operation box, an SD card reading port is arranged on the side face of the operation box, a display screen is arranged on the front face of the operation box, an operation knob is arranged beside the display screen, and a display LED lamp is arranged on the operation knob.
Further, still include electrical power generating system, electrical power generating system includes the power pack, and the power pack left side is provided with switch, and the centre is provided with power display lamp, and the right side is provided with power socket, and they are all fixed on the power pack through the fixed screw hole of power pack, and the power pack passes through power pack and connects screw hole connection on the main frame.
This 3D printing device comprises a plurality of parts. The heating fan device mainly comprises a fan and a heating sheet. The fan is fixed on the heating plate through a fan screw. The heating sheet is arranged on the fan support and fixed by the fan support fixing screws. The fan support fixes the whole heating fan device on the upper part of the device of the invention through a fan support connecting screw. The ceramic parts printed just now by the printing device can be dried and heated by the fan heating device.
The drying hot air generated by the heating fan can effectively and uniformly take away the moisture of the printed ceramic part, so that the printed ceramic paste is hardened, and the stability of the printed ceramic part is improved. The temperature and the air volume of hot air generated by the heating fan device are moderate, and the structure damage and the deterioration of materials to a printed piece can not be caused. The device can effectively reinforce the ceramic printing piece and improve the printing quality.
This 3D printing device is equipped with ceramic printing device, ceramic printing device is by step motor drive, step motor passes through the shaft coupling and links to each other with the spiral stirring head, the spiral stirring head is inserted in the printing device connecting pipe, it is rotatory in the printing device connecting pipe to drive the spiral stirring head by step motor, extrude the rotation of pottery mud material, step motor passes through motor fixing bolt to be fixed on the printing device connecting pipe, the pay-off hose is inserted to one side on the printing device connecting pipe, the printing device connecting pipe passes through the screw nut and links to each other with the printing device base. The printing device base is connected with the device main body through a base fixing screw. The printing needle head is arranged at the bottom of the printing device connecting pipe.
The 3D printing device comprises a main frame of the device, wherein the main frame comprises an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a fixed base, and rubber feet which are in contact with the ground are arranged on the fixed base at the bottom.
The lower part comprises a plurality of parts in this 3D printing device, and the lift slide bar passes through the slide bar mounting to be fixed on the support frame of bottom. The motor is fixed on the bottom support frame through the motor fixing piece. The lifting screw rod is connected with the motor through a connector, and a platform side plate on the printing platform is arranged on the lifting slide rod and the lifting screw rod. The printing platform is arranged on the platform side plates on two sides. The lifting screw rod is driven by the rotation of the motor, so that the printing platform can move up and down.
The top of the 3D printing device is provided with an X-axis support frame and a Y-axis support frame, and an X-axis slide bar and a Y-axis slide bar are arranged on the X-axis support frame and the Y-axis support frame. The steering fixing seat is arranged on the Y-axis slide rod and can slide along the Y-axis slide rod. The steering fixing seat is internally provided with a steering, a shaft nut and a steering roller, and the direction of the belt is changed through the steering roller. The belt driving motor is installed on the motor support through screws, and the motor support is fixed at the tail end of the Y-axis support frame. The upper end of the belt driving motor is provided with a belt driving wheel for driving the movement of the belt. The X-axis sliding block is arranged on the X-axis sliding rod, and the tail end of the belt is fixed on the X-axis sliding block. The whole printing device can slide on the X-axis slide bar and the Y-axis slide bar under the drive of the belt. The printing device fixing seat is installed on the X-axis sliding block through a sliding block screw.
The invention has the beneficial effects that: the technical proposal utilizes hot air fluid to slowly and uniformly remove the water in the ceramic 3D printing piece, because the heating fan device can not directly touch the ceramic printing piece and can not influence the structure of the 3D ceramic printing piece, the heating fan device has higher heating speed, high efficiency and fast heat transfer, sensitive response to a control device, good controllability, compact structure and light weight, can dissipate partial water of the ceramic paste in a short time to achieve the curing effect, the hot air device is arranged on the circumferential direction of the frame, so that the circumferential direction of the ceramic 3D printing piece can be simultaneously heated and dewatered, the phenomenon that the water content of a single part of the ceramic structure is rapidly reduced and the water loss of other parts is slow due to the local heating of the heating fan device on the ceramic 3D printing piece is prevented, so that the phenomena of cracking, collapse and the like of the 3D ceramic printing piece caused by different shrinkage rates occur. The device can effectively improve the stability of the ceramic printing piece. The device can improve the extrusion molding quality of the ceramic paste in the ceramic 3D printing by slowly and uniformly reducing the water content in the ceramic 3D printing paste. Mechanism among this technical scheme dries the part of just printing effectively, and for the printing volume is bigger, the structure is more complicated, and the more changeable ceramic 3D printer of style provides the technological basis.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a heating fan;
FIG. 3 is a schematic view of the construction of the operating device;
FIG. 4 is a schematic diagram of a power supply system;
FIG. 5 is a schematic diagram of a ceramic printing device;
FIG. 6 is a schematic view of the main frame;
FIG. 7 is a schematic structural view of an X-axis bracket and a Y-axis bracket;
fig. 8 is a partial structural view of the X-axis and Y-axis brackets.
Description of the drawings: 1001 fan screw, 1002 fan, 1003 heating plate, 1004 fan support connecting screw, 1005 fan support, 1006 fan support fixing screw, 2001 operation box, 2002 SD card reading port, 2003 display screen, 2004 display LED lamp, 2005 operation knob, 3001 power switch, 3002 power box, 3003 power display lamp, 3004 power box fixing screw hole, 3005 power socket, 3006 power box connecting screw hole, 4001 stepping motor, 4002 coupler, 4003 spiral stirring head, 4004 printing device base, 4005 base fixing screw, 4006 feeding hose, 4007 motor fixing bolt, 4008 printing device connecting pipe, 4009 nut, 4010 screw, 4011 printing needle head, 5001 lifting slide bar, 5002 slide bar fixing piece, 5003 motor, 5004 printing platform, 5005 platform side plate, 5006 lifting screw bar, 5007 connector, 5008 motor fixing part, 6001X-axis supporting frame, 6002Y-axis sliding rod, 6003 belt, 6004Y-axis distance sensor, 6005 belt steering roller shaft, 6006 belt steering seat, 6007 belt steering roller, 6008Y-axis supporting frame, 6009X-axis sliding rod, 6010X-axis distance sensor, 7001 nut, 7002 steering fixing seat, 7003 steering shaft, 7004 steering roller, 7005 screw, 7006 belt driving wheel, 7007 motor bracket, 7008 belt driving motor, 7009 sliding block screw, 7010 printing device fixing seat, 7011X-axis sliding block, 8001Z-axis supporting frame, 8002 fixing seat and 8003 rubber foot.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail with reference to examples.
The present invention relates to a ceramic 3D printing apparatus using heating fan drying, and preferred embodiments of the present invention will be described in further detail below. For convenience of description, in the present embodiment, the end where the operation device is located in fig. 1 is defined as a front end and a lower end, the power system is defined as a side surface, the position where the ceramic printing device is located is defined as an upper end, and a beam where the operation device is located is defined as a Z-axis direction along the X-axis direction and along the height direction of the 3D printing device, which is perpendicular to the X-axis and the Z-axis is defined as a Y-axis direction.
As shown in fig. 1 to 8, a ceramic 3D printing apparatus dried by a heating fan includes a main frame, a printing platform disposed in the main frame, a ceramic printing apparatus disposed on an upper portion of the main frame, and a heating fan apparatus disposed on the main frame, wherein the printing platform is movable along a Z-axis in the main frame, the ceramic printing apparatus is movable along an X-axis and a Y-axis in the upper portion of the main frame, and the ceramic printing apparatus includes a printing needle disposed on an air blowing path of the heating fan apparatus, thereby improving drying efficiency.
Further, the heating fan device comprises a fan support, and a heating sheet and a fan which are fixed on the fan support. Can set up the air intake at the fan support back promptly for natural wind blows to printing the piece through piece and the fan that generates heat, also can inhale the natural wind from piece circumference that generates heat, blows to printing the piece through piece and the fan that generates heat.
Furthermore, still be provided with temperature sensor on the printing needle, temperature sensor's signal output part connects control chip's signal input part, control chip's signal output part connects the signal input part of piece and fan generate heat. Preferably, the outer fringe of fan still is provided with air ducting, air ducting is including arranging the elastic cilia at the fan periphery, the front end of elastic cilia is provided with the not heat conduction silk curtain that hangs down under the natural state, and the elastic cilia can avoid hot-blast dispersion to blow to other places, also can avoid outside air to flow and reduce hot air heat degree, blows off hot-blast, and not heat conduction silk curtain can reduce the hot-blast wind speed that the heat that the fan blew off is inhomogeneous and the high heat of wind speed concentrates to there is certain balanced thermal effect, makes hot-blast more soft blow to the printing piece, has improved the reliability of product.
The ceramic printing device comprises a printing device base fixed on the main frame and a printing device connecting pipe fixed on the printing device base, wherein a printing needle head is fixed at the lower end of the printing device connecting pipe, a stepping motor is fixed at the upper end of the printing device connecting pipe, the output end of the stepping motor extends to a spiral stirring head in the printing device connecting pipe through a coupling joint, and the printing device connecting pipe is further connected with a feeding hose for conveying ceramic pug. The printing device connecting pipe is provided with a ceramic pug branch cylinder, a branch part of the cylinder is connected with the feeding hose, the branch part is not distributed by the connecting pipe perpendicular to the printing device, and inclines upwards to form an included angle of 30 degrees with the connecting pipe, so that feeding is smoother, and ceramic materials flow into a cavity of the branch part through pressure from the feeding hose during printing and are extruded through the spiral stirring head.
Further, the main frame comprises an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a fixed base, the Z-axis moving mechanism is fixed in the fixed base, and the X-axis moving mechanism and the Y-axis moving mechanism are fixed on the upper portion of the fixed base.
Z axle moving mechanism is including setting up the lift litter and the lift hob of arranging along the Z axle in unable adjustment base to and the lift hob driving motor of drive lift hob, the lift litter is fixed on unable adjustment base bottom frame through the lift litter mounting, lift hob driving motor passes through the motor mounting and fixes on unable adjustment base bottom frame, the lift hob passes through the connector and links to each other with the motor, the lift litter with the lift hob passes respectively print platform, lift hob driving motor rotates and drives the lift hob, and then the drive print platform reciprocates, realizes print platform is at the epaxial removal of Z.
The X-axis moving mechanism comprises an X-axis support frame, the Y-axis moving mechanism comprises a Y-axis support frame, two X-axis support frames and two Y-axis support frames are connected to form a rectangular frame, Y-axis slide bars are arranged on the Y-axis support frames, belt steering seats and belt driving motors are respectively arranged at two ends of each Y-axis support frame, steering fixed seats which are respectively arranged on the two Y-axis slide bars and can slide along the Y-axis slide bars are further arranged, steering shafts, nuts and steering rollers are arranged in the steering fixed seats, belts changing directions through the steering rollers are further arranged, the belt driving motors are arranged on motor supports through screws, the motor supports are fixed at the tail ends of the Y-axis support frames, belt driving wheels are arranged at the upper ends of the belt driving motors, an X-axis slide block is arranged on the X-axis slide bars, the X-axis slide bars are fixed on, the tail end of the belt is fixed on the X-axis sliding block, and the whole ceramic printing device can slide on the X axis and the Y axis under the drive of the belt driving motor.
The belt steering seat arranged at the end part of the Y-axis support frame comprises a belt steering pulley shaft and a belt steering pulley, and an X-axis distance sensor and a Y-axis distance sensor which are respectively arranged towards the extending direction of the X-axis slide bar and the extending direction of the Y-axis slide bar are arranged below the belt steering seat and used for measuring and judging the position of the ceramic printing device in the coordinate axis.
In order to conveniently control the whole device, the device further comprises an operating device fixed on the main frame, the operating device comprises an operating box, an SD card reading port is arranged on the side face of the operating box, a display screen is arranged on the front face of the operating box, an operating knob is arranged beside the display screen, and a display LED lamp is arranged on the operating knob.
Further, still include electrical power generating system, electrical power generating system includes the power pack, and the power pack left side is provided with switch, and the centre is provided with power display lamp, and the right side is provided with power socket, and they are all fixed on the power pack through the fixed screw hole of power pack, and the power pack passes through power pack and connects screw hole connection on the main frame.
The 3D printing device comprises a rack with a rectangular cross section, an XYZ axis motion system, a feeding device, a printing platform and a control device, wherein the XYZ axis motion system, the feeding device, the printing platform and the control device are mounted on the rack, the feeding device is movably connected with the XYZ axis motion system to enable the feeding device to move on the XYZ axis motion system along XY axes, the printing platform is arranged below a corresponding position of a discharge port of the feeding device and is movably connected with the XYZ axis motion system to enable the printing platform to move on the XYZ axis motion system along Z axes, the feeding device can move along the XY axes to enable the printing platform to move along the Z axes, and therefore when the feeding device is matched with the printing platform, the feeding device can print various ceramic 3D printing pieces on the printing platform. Still install hot air device in the frame, through hot-blast rising ceramic lotion surface temperature, take away moisture to reduce the moisture in the ceramic lotion, make the solidification of ceramic lotion, the connection between the ceramic powder molecule is more stable, with the reinforcing and having printed ceramic 3D and print the overall stability of piece, prevent collapsing of ceramic 3D and print the piece. The XYZ-axis motion system, the feeding device and the heating fan device are respectively electrically connected with the control device, the control device comprises a power supply system and an operating system, the power supply system is electrically connected with the operating system, the power supply system comprises a power supply box, a power switch, a power display lamp and a power socket, the power supply system supplies power to the whole device, the operating system comprises a main controller, an SD card reading port, an operating knob, a display LED lamp and a display screen, the SD card reading port is used for being inserted into an SD card, an operator can observe the forming condition of a ceramic 3D printing piece on a printing platform and the dehydration condition of the ceramic 3D printing piece by observing the display screen, and the heating fan device is turned on or turned off by the operating knob at proper time.
Preferably, the XYZ-axis motion system comprises an XY-axis movement mechanism and a Z-axis movement mechanism, the XY-axis movement mechanism comprises an X-axis support and a Y-axis support, the Z-axis movement mechanism is the Z-axis support described above, the XY-axis movement mechanism is arranged on the top of the rack, the XY-axis movement mechanism comprises an X-axis support, a Y-axis support, an X-axis slide bar and a Y-axis slide bar, the X-axis support is provided with two parallel X-axis supports, the Y-axis support is also provided with two parallel Y-axis supports, the X-axis support and the Y-axis support are sequentially connected end to form a rectangular frame, the two Y-axis supports are respectively provided with a Y-axis slide bar parallel to the Y-axis support, the rectangular frame is internally provided with an X-axis slide bar, the X-axis slide bars are respectively perpendicular to the two Y-axis slide bars, and the ends of the two Y, The belt driving motor and the belt driving wheel are sleeved with a belt at two ends of the same Y-axis sliding rod, the belt driving motor is installed on the motor support through a screw, and the belt driving motor drives the belt driving wheel to drive the belt to rotate. The utility model discloses a belt slide bar, including X axle slide bar, Y axle's motion is followed to the X axle, Y axle's motion.
Z axle moving mechanism includes lift litter, lift hob and lift hob driving motor, the lift litter is fixed on frame bottom frame through the litter mounting that goes up and down, lift hob driving motor passes through the motor mounting and fixes on frame bottom frame, the lift hob passes through the connector and links to each other with the motor, the lift litter with the lift hob passes respectively print platform, lift hob driving motor rotates the drive lift hob, and then the drive print platform reciprocates, realizes promptly print platform is at the epaxial removal of Z. Because the printing platform is arranged below the position corresponding to the XY-axis moving mechanism, the printing platform can be guaranteed to successfully receive the ceramic paste raw material discharged from the discharge port of the feeding device no matter how the feeding device moves on the X axis and the Y axis, the feeding device can move along the X axis and the Y axis, and the printing platform can move along the Z axis, so that when a ceramic 3D printed piece is printed, the required ceramic 3D printed piece can be printed by controlling the movement of the feeding device and the printing platform.
Preferably, the feeding device comprises a mounting base, a material storage cavity, a stepping motor, a coupler, a spiral stirring head, a feeding hose and a printing needle head, the mounting base is mounted on the XY-axis moving mechanism, specifically on a slide block of the XY-axis moving mechanism, the material storage cavity is fixedly connected with the mounting base, the mounting base is L-shaped, the bottom of the mounting base is provided with a through hole, the material storage cavity is fixedly connected with the mounting base after passing through the through hole, the stepping motor, the coupler and the spiral stirring head which are sequentially connected are arranged at the upper part of the material storage cavity, the stepping motor drives the coupler to further drive the spiral stirring head connected with the coupler to rotate, the spiral stirring head is hermetically connected with the material storage cavity to ensure that raw materials in the material storage cavity do not leak out, a discharge hole at the lower part of the material storage cavity is connected with the printing needle head, one end of the feeding hose is connected with an external feeding device, and the other end of the feeding hose is communicated with the material storage cavity.
Preferably, the lower end of the spiral stirring head is a variable pitch screw, the coarse pitch of the upper end of the variable pitch screw is 20-30 mm, the fine pitch of the lower end of the variable pitch screw is 5-15 mm, the coarse pitch of the upper end can ensure that enough ceramic materials can be rapidly conveyed to the lower end, the fine pitch of the lower end can ensure that the ceramic materials are fully stirred to prevent bubbles, the ceramic paste body coming out of the printing needle head is ensured not to contain bubbles, and the quality of a subsequently formed ceramic 3D printing piece is ensured.
Preferably, the printing device connecting pipe is further provided with a mud vacuum recovery device, the mud vacuum recovery device comprises a crank arm which is hinged and fixed on the printing device connecting pipe, a driving motor for driving the crank arm to rotate and a vacuum adsorption pump arranged at the front section of the crank arm, the vacuum adsorption pump comprises a pump body and a silica gel expansion capsule body fixed at the end part of the pump body, the front end of the silica gel expansion capsule body is provided with a conical nozzle matched with the printing needle head, the middle part of the silica gel expansion capsule body is an expansion cavity, the rear end of the silica gel expansion capsule body is connected with the pump body, the rear section of the pump body is provided with an exhaust port with a filter screen, the conical nozzle, the expansion cavity and the exhaust port form an air flow channel, when the mud vacuum recovery device works, the driving motor drives the crank arm to rotate, the silica gel expansion capsule body rotates to be aligned with the printing needle head, when the vacuum adsorption pump works, the conical nozzle shrinks to suck the printing needle, then driving motor drive crank arm returns the normal position, and its advantage can avoid at first printing the pug that remains the induration in printing the syringe needle and block up the printing syringe needle, guarantees going on smoothly of printing, also avoids the pug of induration to influence the quality of printing next time, and remaining pug belongs to extra unnecessary pug in the printing syringe needle in addition, can influence the accuracy of printing next time, influences the printing quality, adsorbs recovery with it and is favorable to improving the aesthetic property and the reliability of printing.
Preferably, a feeding pipe is arranged at a feeding port on the storage cavity, the feeding pipe is obliquely arranged relative to the storage cavity, an included angle between the feeding pipe and the storage cavity in the vertical direction is 25-35 degrees, the feeding pipe is connected with the feeding hose, ceramic paste raw materials flow into the feeding pipe from the feeding hose through pressure during printing, then flow into the storage cavity through the obliquely arranged feeding pipe and are extruded through the spiral stirring head, and the obliquely arranged feeding pipe can enable feeding to be smoother, so that the phenomenon of material breakage is avoided.
Preferably, the outer wall of the feeding device is coated with a heat insulation material, in particular, the outer walls of the material storage cavity, the printing needle and the feeding hose are coated with a heat insulation material, and the heat insulation material can be a reflective heat insulation coating mixed by ceramic beads and resin. Because the heating fan devices are arranged on the circumferential direction of the rack, the temperature of the outer part of the feeding device can be raised by long-time heating, so that the temperature of the ceramic paste in the feeding device is also raised, the water is dissipated, and the phenomena of hardening, wall sticking and the like occur, so that the ceramic pug is extruded unsmoothly. In order to block heat conduction of the feeding device, the outer wall of the feeding device is coated with a reflection type heat insulation coating mixed by ceramic beads and resin for reflecting heat, so that the temperature is isolated, and the discharging smoothness of the feeding device is ensured.
Preferably, the heating fan device is fixed on the frame by screws, the screws are long screws, the screws penetrate through the bracket to be connected with the shell, the shell is fixed on the frame by the bracket, the fixing position of the heating fan device can be adjusted by adjusting the fixing positions of the screws, the heating fan device can be close to or far away from the frame, the heating fan device arranged in the length direction of the frame can be translated along the length direction of the frame, the heating fan device arranged in the width direction of the frame can be translated along the width direction of the frame, and the position of the heating fan device can be properly adjusted according to the size of the ceramic 3D printing piece.
Preferably, the frame circumference is provided with the heating fan device, preferably at the frame around 4 heating fan devices of installation, arbitrary heating fan device's air-out end all faces the material feeding unit discharge gate can transversely 360 degrees to ceramic 3D prints and heat the dewatering work, prevents to appear because heating fan device heats a side of ceramic 3D prints, makes the ceramic 3D of single side print the moisture content and reduces fast, and other partial moisture loses slowly to the different circumstances of shrinkage factor appear, and then the appearance of phenomenons such as fracture, collapse appear.
As an application specific example, the 3D printer size is 600 × 600mm, a universal XYZ-axis printing mode is adopted, and the printing head is of a mechanical screw-push-rod extrusion type. The spiral push rod is driven by the motor to rotate clockwise. The mud is pushed into the printing device connecting pipe by air pressure, and the spiral push rod is extruded. The heating fan device has the size of length, width, height, 50 x 60mm and power of 150 w. The power supply is provided by a ceramic 3D printer power supply or a separate power supply. The mounting position of heating fan unit is on the upper portion of pottery 3D printer, through the mounting screw installation on the support. The support is provided with a mounting long screw which is fixedly arranged on a support frame at the upper part of the XY axis of the machine. The blowing range of the heating fan device is concentrated on the part which is just printed by the printing head, and the ceramic paste which is just printed has the highest water content, so that the paste which is just printed needs to be rapidly dewatered.
The heating fan device is arranged on the support frame on the upper part of the XY axis, when a printed object is not a regular rotating body, the fixed support of the heating fan device can move along the support frame in a small transverse range, so that the blowing range of the heating fan device covers the ceramic structural component as far as possible, and the ceramic structural component is suitable for different ceramic structural components to remove water. Because the water content of the printed and extruded ceramic is large, the water needs to be removed quickly, and the printed ceramic structural part can dissipate the water very slowly in the air, and does not need to be dried by a heating fan device.
Every side of preferred every pottery 3D printer need arrange two heating fan device, arranges eight altogether, can transversely 360 degrees heating dewatering work to ceramic structure spare, prevents to appear because heating fan device is to ceramic structure spare's local heating, makes the ceramic structure moisture content of single part reduce fast, and other partial moisture loses and disappears slowly to the different condition of shrinkage factor appears, thereby the appearance of phenomenons such as fracture, collapse.
The center of the fan in each heating fan unit is aligned with the center of the heating plate, so that the wind blown into the heating plate by the fan can achieve the best effect. Since the ceramic paste just printed has the highest water content and needs to be rapidly dewatered, the vertical installation of each heating fan device ensures that the vertical center of the fan is aligned with the position of the printing needle of the printing device.
The effective blowing range of a single heating fan is 50cm, but the effective water removal cannot be carried out due to insufficient temperature at the blowing end, and in order to better remove water in a ceramic structural member, the temperature of hot air blown to the structural member can reach more than 40 ℃, and the heating fan must be arranged within the range of 40 cm. And the ceramic part can not be too close to the heating fan, when the ceramic part is only 5cm away from the heating fan, the temperature of hot air blown to the ceramic part can reach more than 55 ℃, the ceramic part can be quickly dehydrated and has cracks, and the close-distance air quantity is large, so that the structure of the ceramic part can be damaged. The installation position of the hot air must be spaced apart from the center of the printing platform by a distance of 10-40 cm. The printed object size of the ceramic 3D printer was 300 × 400. When a large object is printed, the support frame can be far away from the support frame on the upper part of the XY axis by adjusting the mounting long screw, and the heating fan is moved outwards to obtain the best blowing effect.
Because the heating fans are arranged on the periphery and directly blow towards the printing needle head of the printing device, the outside of the printing device is heated up due to long-time hot air drying, so that the ceramic paste in the printing device is also heated up, the water is dissipated, the ceramic paste becomes hard and is adhered to the wall, and the ceramic paste is extruded out unsmoothly. In order to block the heat conduction of the printing device, the exterior of the printing device can be wrapped with isolated conduction type heat preservation and insulation paper which is used for isolating the heat conduction of hot air directly blown out, so that the normal temperature is kept, and the printing is smooth.
The heating fan is arranged on the support frame on the upper part of the XY axis, when a printed object is not a regular rotating body, the fixing support of the heating fan can move along the transverse small range of the support frame, so that the transverse blowing range of the heating fan covers the ceramic structural member as far as possible, and the ceramic structural member is suitable for better dewatering of different types of ceramic structural members.
The using method comprises the following steps: the heating fan device around is opened after the height of about 1cm is printed to the pottery 3D printer, makes the heating fan device can blow the heating to the ceramic structure spare of just printing, and the process of printing midway can keep opening of heating fan device, when printing the progress and only remaining 10%, can close the heating plate in the heating fan device, only remain the fan. When the printing progress is only 5%, the whole heating fan device can be closed in advance, and the residual temperature is used for heating. If the ceramic printer is slightly whitened or slightly cracked early in the printing process, the heating sheet in the heating fan device needs to be closed in advance, and only air is blown. If the ceramic printer is whitened or cracked during printing, the heating fan device needs to be turned off in advance.
Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution, and all of them shall fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an utilize dry ceramic 3D printing device of heating fan which characterized in that: the ceramic printing device comprises a main frame, a printing platform arranged in the main frame, a ceramic printing device arranged on the upper portion of the main frame, and a heating fan device arranged on the main frame, wherein the printing platform can lift along a Z axis in the main frame, the ceramic printing device is arranged on the upper portion of the main frame and can move along an X axis and a Y axis, the ceramic printing device comprises a printing needle head, and the printing needle head is arranged on a blowing path of the heating fan device.
2. The ceramic 3D printing device dried by a heating fan according to claim 1, wherein: the heating fan device comprises a fan support, and a heating sheet and a fan which are fixed on the fan support.
3. The ceramic 3D printing device dried by a heating fan according to claim 2, wherein: the printing needle head is also provided with a temperature sensor, the signal output end of the temperature sensor is connected with the signal input end of the control chip, and the signal output end of the control chip is connected with the signal input ends of the heating sheet and the fan.
4. The ceramic 3D printing device dried by a heating fan according to claim 1, wherein: the ceramic printing device comprises a printing device base fixed on the main frame and a printing device connecting pipe fixed on the printing device base, wherein a printing needle head is fixed at the lower end of the printing device connecting pipe, a stepping motor is fixed at the upper end of the printing device connecting pipe, the output end of the stepping motor extends to a spiral stirring head in the printing device connecting pipe through a coupling joint, and the printing device connecting pipe is further connected with a feeding hose for conveying ceramic pug.
5. The ceramic 3D printing device dried by a heating fan according to claim 1, wherein: the main frame comprises an X-axis moving mechanism, a Y-axis moving mechanism, a Z-axis moving mechanism and a fixed base, the Z-axis moving mechanism is fixed in the fixed base, and the X-axis moving mechanism and the Y-axis moving mechanism are fixed on the upper portion of the fixed base.
6. The ceramic 3D printing device dried by a heating fan according to claim 5, wherein: z axle moving mechanism is including setting up the lift litter and the lift hob of arranging along the Z axle in unable adjustment base to and the lift hob driving motor of drive lift hob, the lift litter is fixed on unable adjustment base bottom frame through the lift litter mounting, lift hob driving motor passes through the motor mounting and fixes on unable adjustment base bottom frame, the lift hob passes through the connector and links to each other with the motor, the lift litter with the lift hob passes respectively print platform, lift hob driving motor rotates and drives the lift hob, and then the drive print platform reciprocates, realizes print platform is at the epaxial removal of Z.
7. The ceramic 3D printing device dried by a heating fan according to claim 5, wherein: the X-axis moving mechanism comprises an X-axis support frame, the Y-axis moving mechanism comprises a Y-axis support frame, two X-axis support frames and two Y-axis support frames are connected to form a rectangular frame, Y-axis slide bars are arranged on the Y-axis support frames, belt steering seats and belt driving motors are respectively arranged at two ends of each Y-axis support frame, steering fixed seats which are respectively arranged on the two Y-axis slide bars and can slide along the Y-axis slide bars are further arranged, steering shafts, nuts and steering rollers are arranged in the steering fixed seats, belts changing directions through the steering rollers are further arranged, the belt driving motors are arranged on motor supports through screws, the motor supports are fixed at the tail ends of the Y-axis support frames, belt driving wheels are arranged at the upper ends of the belt driving motors, an X-axis slide block is arranged on the X-axis slide bars, the X-axis slide bars are fixed on, the tail end of the belt is fixed on the X-axis sliding block, and the whole ceramic printing device can slide on the X axis and the Y axis under the drive of the belt driving motor.
8. The ceramic 3D printing device dried by a heating fan according to claim 7, wherein: the belt steering seat arranged at the end part of the Y-axis support frame comprises a belt steering pulley shaft and a belt steering pulley, and an X-axis distance sensor and a Y-axis distance sensor which are respectively arranged towards the extending direction of the X-axis slide bar and the extending direction of the Y-axis slide bar are arranged below the belt steering seat and used for measuring and judging the position of the ceramic printing device in the coordinate axis.
9. The ceramic 3D printing device dried by a heating fan according to claim 1, wherein: the operation device comprises an operation box, an SD card reading port is arranged on the side face of the operation box, a display screen is arranged on the front face of the operation box, an operation knob is arranged beside the display screen, and a display LED lamp is arranged on the operation knob.
10. The ceramic 3D printing device dried by a heating fan according to claim 1, wherein: still include electrical power generating system, electrical power generating system includes the power pack, and the power pack left side is provided with switch, and the centre is provided with power display lamp, and the right side is provided with power socket, and they all fix on the power pack through the fixed screw hole of power pack, and the power pack passes through power pack and connects screw hole connection on the main frame.
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| CN112122613A (en) * | 2020-10-26 | 2020-12-25 | 广西富乐科技有限责任公司 | Metal 3D printer lift platform |
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| CN114953458A (en) * | 2022-05-17 | 2022-08-30 | 马鞍山嘉兰智造科技有限公司 | 3D prints and uses raw materials preprocessing device |
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