CN110883903A - Utilize dry ceramic 3D printing device of circulating warm braw - Google Patents
Utilize dry ceramic 3D printing device of circulating warm braw Download PDFInfo
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- CN110883903A CN110883903A CN201911216620.8A CN201911216620A CN110883903A CN 110883903 A CN110883903 A CN 110883903A CN 201911216620 A CN201911216620 A CN 201911216620A CN 110883903 A CN110883903 A CN 110883903A
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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
- 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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Abstract
The invention discloses a ceramic 3D printing device dried by circulating warm air, which comprises a main frame, a printing platform and a ceramic printing 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 extending into the main frame, a baffle surrounding the main frame is arranged outside the main frame, a top cover covering the ceramic printing device is arranged at the top of the main frame, a hot air device is arranged at the lower part of the baffle or the main frame, and an air outlet is arranged on the top cover. 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.
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 using circulating warm air to accelerate 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.
A ceramic 3D printing device dried by circulating warm air comprises a main frame, a printing platform arranged in the main frame, and a ceramic printing device arranged on the upper part of the main frame, wherein the printing platform can lift along the Z axis in the main frame, the ceramic printing device can move along the X axis and the Y axis on the upper part of the main frame, the ceramic printing device comprises a printing needle head extending into the main frame, a baffle plate surrounding the main frame is arranged outside the main frame, a top cover for covering the ceramic printing device is arranged at the top of the main frame, the lower part of the baffle plate or the main frame is provided with a hot air device with an air inlet, the top cover is provided with an air outlet, the air inlet, the inner space of the main frame, the inner space of the top cover and the air outlet form a warm air flow path, the positions of the prints above the printing platform and below the printing needle head are on the warm air flow path.
The hot air device comprises a heating sheet and a fan which are fixed on the baffle or the main frame.
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 hot air device mainly comprises a fan and a heating sheet. The fan is fixed on the heating plate through a fan screw. The hot air device is arranged on the back baffle. The hot air device can provide circulating hot air for the whole printing device.
The periphery of the device is provided with the baffle plate and is fixed by the baffle plate fixing screws. The bottom is provided with a bottom plate, and the baffle plate in front of the bottom is provided with an openable front face, so that the operation is convenient for taking out articles. The top of the equipment is provided with a top cover, the front part of the top cover is provided with an air outlet, and the air outlet can discharge circulating air in the device. The feeding hose also extends into from the air outlet, and can conveniently move when printing.
The peripheral baffle, the bottom plate and the top cover form a semi-closed space, and dry hot air which can be continuously generated by a hot air device can form hot air circulation in the device. The circulating hot air can effectively and uniformly take away the moisture of the printed ceramic piece, so that the printed ceramic paste is slowly and uniformly hardened, and the stability of the printed ceramic piece is improved. The hot air temperature and the air volume that hot air device produced are moderate, can not cause the rotten of structure injury and material to the printed matter, and the air outlet can be with the higher air escape of water content, and the hot-blast water content of device inner loop is lower, can take away the moisture in the ceramic printed matter effectively. 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: this technical scheme utilizes hot blast fluid, it is slow, even moisture with in the pottery 3D prints the piece gets rid of, because hot-blast apparatus can not cause direct touching to the pottery printing piece, can not influence the structure that the 3D pottery printed the piece, hot-blast apparatus rate of heating is very fast, high efficiency, the heat transfer is fast, it is sensitive to the controlling means reaction, good controllability, compact structure, light in weight, can make partial ceramic lotion moisture scatter and disappear in the short time, reach the effect of solidification, and can guarantee to the pottery 3D printing piece circumference simultaneously heating dewatering through circulating warm braw, prevent because hot-blast apparatus heats the local of pottery 3D printing piece, make the ceramic structure moisture content of single part reduce fast, and other partial moisture scatter and disappear slowly, thereby the shrinkage factor difference appears and leads to the cracking of 3D pottery printing piece, the appearance of phenomenons such as collapsing. The device can effectively improve the stability of the ceramic printing piece.
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 view of the construction of the operating device;
FIG. 3 is a schematic diagram of a power supply system;
FIG. 4 is a schematic structural view of a ceramic printing apparatus;
FIG. 5 is a schematic view of the main frame;
FIG. 6 is a schematic structural view of an X-axis bracket and a Y-axis bracket;
FIG. 7 is a partial schematic structural view of the X-axis and Y-axis brackets;
FIG. 8 is a structural exploded view of the present invention;
fig. 9 is a structural exploded view of another angle of the present invention.
Description of the drawings: 1000 hot air device, 1001 fan screw, 1002 fan, 1003 heating plate, 2001 operation box, 2002 SD card reading port, 2003 display screen, 2004 display LED lamp, 2005 operation knob, 3000 power system, 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 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 bar, 5007 connector, 5008 motor, 6001X shaft supporting frame, 6002Y shaft slide bar, slide bar, 6003 belts, 6004Y-axis distance sensors, 6005 belt turning roller shafts, 6006 belt turning seats, 6007 belt turning rollers, 6008Y-axis supporting frames, 6009X-axis sliding rods, 6010X-axis distance sensors, 7001 nuts, 7002 turning fixing seats, 7003 turning shafts, 7004 turning rollers, 7005 screws, 7006 belt driving wheels, 7007 motor supports, 7008 motors, 7009 sliding block screws, 7010 printing device fixing seats, 7011X-axis sliding blocks, 8001 baffle fixing screws, 8002 fixing seats, 8003 rubber feet, 8004 air outlets, 8005 top covers, 8006 baffles, 8007 openable front doors, 8008Z-axis supporting frames and 8009 bottom plates.
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 a circulation type warm air drying, and a preferred embodiment of the present invention will be described in further detail below. For convenience of description, in the present technical solution, 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 located on a side surface, the position where the air outlet is located is an upper end, and it is specified that the beam where the operation device is located is along an X-axis direction, a height direction along the 3D printing device is a Z-axis direction, and a direction perpendicular to the X-axis and the Z-axis is a Y-axis direction.
As shown in fig. 1 to 9, a ceramic 3D printing device using circulating warm air for drying includes a main frame, a printing platform disposed in the main frame, and a ceramic printing device disposed on the upper portion of the main frame, wherein the printing platform can be lifted 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 portion of the main frame, the ceramic printing device includes a printing needle extending into the main frame, a baffle surrounding the main frame is disposed on the outer side of the main frame, a top cover covering the ceramic printing device is disposed on the top of the main frame, a hot air device is disposed on the baffle or the lower portion of the main frame, an air outlet is disposed on the top cover, the air inlet, the inner space of the main frame, the inner space of the top cover and the air outlet form a warm air flow path, and printing positions above the printing platform and below the printing needle are located on the warm air flow path, preferably, the whole warm air flow path is a spiral ascending path, and the inside of the main frame is contacted with the internal original and the printing piece to blow away circular flow, so that the drying effect is realized.
Preferably, an isolated case top cover is further arranged below the top cover, only one gap is reserved, the inner space of the main frame is communicated with the outer space through the gap and the air outlet, a semi-closed space is formed above the printing platform and below the case top cover, and the printing platform is arranged in the middle of the inner space of the case and divides the inner space of the case into two relatively independent spaces. The lower space is a hot air conveying space, and the upper space is a hot air circulating space. The hot air device pumps air outside the case into the case through the fan, and heats the air to about 45 ℃ through the heating sheet. The heated dry air enters the hot air conveying space at the lower part in the case from the lower part of the rear baffle, and the hot air directly passes through the bottom of the printing platform. The wind passing through the bottom of the platform blows on the front baffle plate, so that the direction of the hot wind flow is changed into upward movement. The air flow moving upwards enters the hot air circulation space at the upper part from the hot air conveying space at the lower part through a gap reserved between the printing platform and the baffle. The hot air reaches the top cover of the case after reaching the upper circulating space, then reaches the rear baffle backwards along the top cover, and reaches the printing platform downwards, part of the air volume is discharged out of the case from the front air outlet upwards, and the rest of the air continues to complete small circulation in the upper circulating space, so that mild water removal treatment of the ceramic printer by using the circulating air is realized.
The hot air device comprises a heating sheet and a fan which are fixed on the baffle or the main frame. The natural wind can be blown into the main frame through the heating piece and the fan, and can also be sucked from the circumferential direction of the heating piece and blown into the main frame through the heating piece and the fan.
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 bottom of the main frame inside the baffle is further provided with an air guide device, the air guide device is a smooth reverse conical surface-shaped air guide surface, namely, the lower end of the air guide surface is converged and the upper end is unfolded to form the reverse conical surface-shaped air guide surface, an outlet of the air guide device extends into the air guide surface, so that hot air is blown out and then rotates and rises, the hot air reaches a printing area through a printing platform, a printed part is dried, then rises and flows out from an air outlet at the upper end, the hot air is blown to the printed part softly, and the reliability of a product is improved. As an alternative embodiment, the printing platform may be provided in a circular truncated cone shape to fit the flow direction of the hot air. Further, be provided with the perforating hole that is used for the ventilation on the print platform, the density of arranging of perforating hole is followed print platform and is extended to print platform center department and reduce gradually, and its central point puts and does not set up the perforating hole to guarantee placing of printing the firm, further, the aperture diverse of perforating hole is extended to print platform center department from print platform the aperture of perforating hole dwindles gradually, thereby avoids the mud of printing to flow away through the perforating hole and influences the quality of printing. The through holes are arranged to facilitate the warm air to further circularly take away the moisture of the mud.
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 circulating warm braw 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 the collapse of ceramic 3D and print the piece. The XYZ-axis motion system, the feeding device and the hot air 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 through observing the display screen, and the hot air device is timely turned on or turned off through the operating knob.
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 hot air device is arranged, 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 phenomenon of hardening, wall sticking and the like can occur due to moisture loss, and the ceramic pug can not be extruded smoothly. 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.
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 pug is pushed into a connecting pipe of the printing device by air pressure and then extruded by a spiral push rod. The size length, width and height of the single heating fan device are 60 x 70mm, and the power is 200 w. The fan and the heating sheet need to be supplied with power respectively, and the power is supplied through a ceramic 3D printer power supply or a single power supply. The hot air device is arranged at the bottom of the back baffle. Every 3D printing apparatus will install two hot air devices. The two hot air devices can provide sufficient dry hot air for the whole hot air circulating system. The bottom position of dress on the back baffle can prevent that the fan from going out the hot-blast direct blow to ceramic structure spare of blowing, avoids too dry high temperature's flowing air direct to ceramic structure spare contact. The baffle is acrylic material, and the back baffle is apart from bottom surface 10cm position department, prolongs two heating fan device of axis symmetry installation of back baffle, and two heating fan device gather apart from 10cm mutually, and two heating fan device fans are outside towards the quick-witted case, and the heating plate is inside towards quick-witted case. The heating fan device is directly adhered to the rear baffle plate through sealant. The hot air device is arranged at the bottom, and the air outlet is arranged at the top, so that the air circulation in the case is facilitated, and the whole ceramic structural part can be fully contacted with moving air. The continuous addition of hot air into the closed case can raise the atmospheric pressure inside the case, resulting in a small air pressure difference between the inside and the outside of the case, and the air inside the case can be smoothly discharged through negative pressure.
The circulation dry hot air can 360 degrees of all sides heat dewatering work to ceramic structure spare, prevents to appear because the single position heating to ceramic structure spare, 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 appears.
The using method comprises the following steps: the ceramic 3D printer is characterized in that the front part and the rear part of the ceramic 3D printer are required to be closed in the printing process, the hot air device is opened after the height of about 1cm is printed, the hot air device can be used for heating dry and hot flowing air in a circulating manner in a case, the ceramic structural part is heated, the hot air device can be kept opened in the midway printing process, and when the printing progress is only 10%, the heating piece in the hot air device can be closed, and only the fan is reserved. When the printing progress is only 5%, the whole hot air 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 hot air device needs to be closed in advance, and only air blowing is carried out. If the ceramic printer is whitened or cracked during printing, the hot air device needs to be closed 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 circulating warm braw which characterized in that: including the main frame, set up the print platform in the main frame and set up the ceramic printing device on main frame upper portion, print platform is in can follow Z axle lift 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 is including extending the inside printing syringe needle of main frame, the main frame outside is provided with the baffle that surrounds the main frame, main frame top is provided with and covers ceramic printing device's overhead guard, the lower part of baffle or main frame is provided with the hot air device who takes the inlet port, be provided with the air outlet on the overhead guard.
2. The ceramic 3D printing device using circulating warm air drying according to claim 1, wherein: the hot air device comprises a heating sheet and a fan which are fixed on the baffle or the main frame.
3. The ceramic 3D printing device using circulating warm air drying according to claim 2, characterized in that: 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 using circulating warm air drying 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 using circulating warm air drying 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 using circulating warm air drying 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 using circulating warm air drying 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 using circulating warm air drying 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 using circulating warm air drying 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 using circulating warm air drying 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112440367A (en) * | 2020-11-18 | 2021-03-05 | 康硕(德阳)智能制造有限公司 | 3D ceramic printer |
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