CN109624320B - Self-service print head of 3D printer - Google Patents
Self-service print head of 3D printer Download PDFInfo
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- CN109624320B CN109624320B CN201811566118.5A CN201811566118A CN109624320B CN 109624320 B CN109624320 B CN 109624320B CN 201811566118 A CN201811566118 A CN 201811566118A CN 109624320 B CN109624320 B CN 109624320B
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- groove
- heating
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- sleeve
- head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a self-service printing head of a 3D printer. The spray head comprises a spray head assembly and a platform assembly, wherein a bottom plate, a tray and a mechanical limiting mechanism are arranged on the platform assembly, the bottom plate is arranged in the middle of the platform assembly and is positioned close to the lower side of the platform assembly, the tray is arranged on the bottom plate and is clamped on the platform assembly, the mechanical limiting mechanism is arranged at the edge of the bottom plate and is in contact with the tray, the spray head assembly is arranged right above the tray, the spray head assembly comprises a spray head outer cover, a spray head mechanism, a piston mechanism and a residual material detection mechanism, the spray head mechanism is connected with the piston mechanism, the spray head mechanism and the piston mechanism are all arranged on the spray head outer cover, and the residual material detection mechanism is arranged on the piston mechanism and is connected with the piston mechanism. The beneficial effects of the invention are as follows: the printer does not need to be manually operated in real time, the printed product can be obtained by self, the normal use of the printer is not affected, and the working efficiency of the printer is improved; the printing speed and the stability are improved, and the printing device is suitable for printing of various food materials.
Description
Technical Field
The invention relates to the technical field related to 3D printers, in particular to a self-service printing head of a 3D printer.
Background
The 3D printer (3D Printers) is a magic printer designed by a inventor named enrick Dini, which can print not only a complete building but also any required shape of objects for astronauts in space craft. However, 3D printing is a model of an object, and the function of the object cannot be printed.
The research and development center Lin Wenxiong of 3D printing engineering technology of the mass structure institute of the national academy of sciences of China breaks through the key technology of rapid prototyping of continuously printable three-dimensional objects for the first time in China, and develops a super rapid continuous printing digital projection (DLP) 3D printer. The speed of the 3D printer reaches 600mm/s of the original record, a three-dimensional object with the height of 60mm can be pulled out from the resin tank within 6 minutes, and the same object is printed by adopting the traditional stereo light curing forming process (SLA) for about 10 hours, the speed is improved by 100 times as much as that of the three-dimensional object-! 3D prints and realizes space industrialization.
In the prior art, when a 3D printer prints according to an input printing model, and when the printing is completed, the model molding is required to be stabilized before the next operation can be performed, and the operation often causes low working efficiency of the printer.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a self-service printing head of a 3D printer with high working efficiency.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a self-service print head of 3D printer, includes shower nozzle subassembly and platform subassembly, the platform subassembly on be equipped with bottom plate, tray and mechanical stop gear, the bottom plate install in the centre of platform subassembly and lean on the position department on the lower side, the tray arrange in on the bottom plate and joint on the platform subassembly, mechanical stop gear arrange the edge of bottom plate and contact with the tray in, the shower nozzle subassembly arrange in directly over the tray, the shower nozzle subassembly include shower nozzle dustcoat, shower nozzle mechanism, piston mechanism and clout detection mechanism, shower nozzle mechanism and piston mechanism be connected, shower nozzle mechanism and piston mechanism all install on the shower nozzle dustcoat, clout detection mechanism install on piston mechanism, mechanical stop gear be connected with piston mechanism.
When the spray head assembly is used, the tray is only required to be placed on the bottom plate of the platform assembly, the position of the tray is limited by the mechanical limiting mechanism, whether the tray exists on the bottom plate or not is detected by the mechanical limiting mechanism, if so, the spray head assembly works, and if not, the spray head assembly is locked and does not work; then, the spray head assembly starts to work, the piston mechanism acts on the spray head mechanism to print the materials on the tray, and the residual materials in the spray head mechanism are detected through the residual material detection mechanism, so that the normal work of the printer is ensured; the design makes the printer in the during operation, and operating personnel can acquire the printing product on the tray by oneself in real time, and operating personnel can ensure the normal work of printer through the linkage of mechanical limit switch and piston mechanism when drawing the tray, and the design does not need to carry out manual operation to the printer in real time like this, can acquire the printing product by oneself, and does not influence the normal use of printer, has improved the work efficiency of printer greatly.
Preferably, the platform assembly comprises a printing platform, the intermediate position department of printing platform is equipped with the mounting groove, the mounting groove include square groove and dysmorphism groove, the mounting groove be integrative, square groove arrange in the positive central point position department of printing platform, the one end and the one end of square groove of dysmorphism groove are connected, the other end of dysmorphism groove is arranged in on the edge of printing platform, the width of dysmorphism groove is from arranging in one end in square groove to arranging in one edge of printing platform in the gradual increase, the back of printing platform just is equipped with the gasket on arranging in the outward flange of mounting groove, the bottom plate pass through the gasket and install in printing platform's mounting groove department, square groove's width is less than dysmorphism groove and arranges in square groove's one end width, square groove's one end width is unanimous in with dysmorphism groove to the width, the length of tray is greater than square groove's length, tray one edge intermediate department of tray be equipped with the pull handle, tray arrange in between bottom plate and the square groove. Through structural design between mounting groove, gasket and the bottom plate for the below of shower nozzle subassembly can be conveniently fixed a position through the direction of mounting groove to the tray, can ensure the planarization of tray simultaneously, thereby guaranteed the quality of printing the product.
Preferably, the mechanical limit mechanism comprises a mechanical limit switch and an auxiliary limit switch, the mechanical limit switch is arranged on the back of the printing platform and is arranged on the right side of the square groove, the auxiliary limit switch is arranged on the back of the printing platform and is arranged on the left side of the square groove, the mechanical limit switch and the auxiliary limit switch correspond to each other on the left side and the right side of the back of the printing platform, and the tray is arranged between the mechanical limit switch and the auxiliary limit switch. Through mechanical stop gear's structural design, can conveniently inject the position of tray, prevent that the tray from taking place relative displacement and influencing the product of printing.
Preferably, the waste tank is arranged on the printing platform and above the mounting tank, the optical limit head is arranged on the left side of the waste tank on the printing platform, the optical limit switch is arranged on the back of the printing platform and on the back of the optical limit head, and the optical limit head is arranged in the optical limit switch. Through the cooperation of optical limit switch and optical limit head, can effectually inject print platform's position to ensure the reliable printing of product.
Preferably, the piston mechanism comprises a spray head fixing block, a screw rod and a stepping motor, wherein a guide sleeve is arranged at one end of the screw rod, a plug screw is arranged on the side face of the guide sleeve, a pulley is arranged on the plug screw, a connector is arranged at the other end of the screw rod, the screw rod is arranged on the stepping motor, the stepping motor is arranged on the upper end face of the spray head fixing block, the spray head outer cover is integrally formed, the spray head outer cover comprises a motor cover and a screw rod cover, the screw rod cover is arranged above the motor cover, the spray head fixing block is arranged inside the motor cover, one end of the screw rod, provided with the guide sleeve, is arranged in the screw rod cover, a guide groove is formed in the screw rod cover, the pulley is arranged in the guide groove, the spray head mechanism is arranged at the lower end of the spray head fixing block, and the residual material detection mechanism is arranged on the screw rod and the spray head fixing block. Through the design of uide bushing, stopper beat screw and pulley, can be convenient inject the stroke displacement of lead screw to ensure the normal use of shower nozzle subassembly.
Preferably, the guide way comprises an open slot and a guide way slot, the open slot is arranged above the guide way slot, the pulley is provided with a groove, the width of the open slot is larger than the diameter of the pulley, the width of the guide way slot is smaller than the diameter of the pulley and larger than the inner diameter of the groove on the pulley, the pulley is limited on the guide way slot through the groove, the outer side of the screw rod cover is provided with a metal plate protective cover, the metal plate protective cover is provided with a waist-shaped hole, and the position of the waist-shaped hole corresponds to the position of the guide way. Through the design of the guide groove, the pulley is convenient to take and put through the open groove on one hand, and the pulley is convenient to move up and down through the guide groove on the other hand; the sheet metal protective cover can effectively protect the screw rod cover and parts inside the screw rod cover, and meanwhile, the material quantity in the nozzle mechanism can be observed in real time through the waist-shaped holes, so that the normal use of the printer is ensured.
Preferably, the residual material detection mechanism comprises an optical limit switch and a residual material induction head, the residual material induction head is arranged on the guide sleeve, a through hole for placing a screw rod is formed in the middle of the upper end of the spray head fixing block, a limit fixing support is arranged on the upper end face of the spray head fixing block and on the side edge of the stepping motor, the limit fixing support is L-shaped, one side of the limit fixing support is fixedly arranged on the spray head fixing block, the optical limit switch is arranged at the other side of the limit fixing support, the optical limit switch is arranged above the stepping motor and corresponds to the position of the residual material induction head up and down, the lower end of the spray head fixing block is provided with a left flanging, a right flanging and a rear flanging, the left flanging, the right flanging and the spray head fixing block are integrally formed, the left flanging and the right flanging are symmetrically distributed, the left flanging and the right flanging are provided with mounting openings, the spray head mechanism is arranged in the mounting openings, and the spray head fixing block is fixedly connected with the spray head housing through the rear flanging. Through the structural design of clout detection mechanism, can ensure the normal use of printer.
Preferably, the spray head mechanism comprises a heat insulation sleeve, a heating sleeve and a heating plug, wherein the heating plug is arranged at one end of the heating sleeve, a connector of the screw rod is arranged at the other end of the heating sleeve, the heating sleeve and the heating plug are both arranged in the heat insulation sleeve, a heat insulation flanging is arranged at the upper end of the heat insulation sleeve, the heat insulation sleeve is arranged on the spray head fixing block through the heat insulation flanging, an opening hole is formed in the middle of the lower end of the heat insulation sleeve, and the heating plug is arranged in the opening hole. Through the structural design of shower nozzle mechanism, simple structure installs and simple operation.
Preferably, the upper end of the heating sleeve is provided with a heating flanging, the heating flanging is matched with the heat insulation flanging, the heating sleeve is installed in the heat insulation sleeve through the heating flanging and the heat insulation flanging, the height of the heating flanging is smaller than that of the heat insulation flanging, the upper end face of the heating flanging is provided with a plurality of material guiding grooves, the cross section shape of each material guiding groove is triangular, and the depth of each material guiding groove is gradually increased from the outer edge of the heating flanging to the inner edge of the heating flanging. Through the structural design of heating jacket and insulating sheath to and the cooperation of draw the silo is used, can be with the better guide of the material of adding to the heating jacket in, prevent the leakage of material and influence the use of shower nozzle subassembly.
Preferably, the heating plug is integrally formed, the heating plug comprises a sleeve part and a head sleeve part, the heating plug is connected with the heating sleeve through the sleeve part, a plurality of heating plates are uniformly distributed on the outer side face of the head sleeve part of the heating plug, the heating plates are arranged on the outer side face of the sleeve part of the heating plug, the connector of the screw rod is integrally formed, the connector comprises a cylindrical part and a cone part, the diameter of the cylindrical part of the connector is consistent with the inner diameter of the sleeve part of the heating plug, the cone part of the connector is in a shape of conical upper end and cylindrical lower end, the diameter of the lower end of the cone part of the connector is consistent with the diameter of the head sleeve part of the heating plug, and a pressure relief groove is formed in the side face of the lower end of the cone part of the connector. Through the design of the heating plate, the material at the heating plug can be fully melted into liquid, and the reliable use of the spray head assembly is ensured; through the design of the pressure relief groove on the connector, when the conical head part of the connector is prevented from entering the head sleeve part of the heating plug, the cylindrical part of the connector and the barrel sleeve part of the heating plug form a sealing space, so that the pressure intensity is increased to damage the spray head assembly, and the potential safety hazard of the spray head assembly can be eliminated. The design optimizes the extrusion flow channel aiming at the design of the spray head assembly, greatly improves the printing speed and stability, and is more suitable for printing various food materials.
The beneficial effects of the invention are as follows: the normal work of the printer is ensured through the linkage of the mechanical limit switch and the piston mechanism, the printer does not need to be manually operated in real time, the printed product can be obtained by self without influencing the normal use of the printer, and the working efficiency of the printer is greatly improved; greatly improves the printing speed and stability, and is more suitable for printing various food materials.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a platform assembly;
FIG. 3 is a bottom view of FIG. 2;
FIG. 4 is a schematic structural view of a showerhead assembly;
fig. 5, 6 and 7 are schematic views of the internal structure of the showerhead assembly.
In the figure: 1. the spray head assembly, 2, the platform assembly, 3, the sheet metal shield, 4, the spray head housing, 5, the spray head mechanism, 6, the print platform, 7, the base plate, 8, the tray, 9, the scrap box, 10, the optical locating head, 11, the mounting slot, 12, the gasket, 13, the handle, 14, the special-shaped slot, 15, the square-shaped slot, 16, the optical locating switch, 17, the auxiliary locating switch, 18, the mechanical locating switch, 19, the screw cap, 20, the motor housing, 21, the guide rail slot, 22, the open slot, 23, the guide slot, 24, the scrap induction head, 25, the pulley, 26, the plug screw, 27, the guide sleeve, 28, the screw cap, 29, the optical locating switch, 30, the limiting fixing bracket, 31, the stepping motor, 32, the spray head fixing block, 33, the rear flange, 34, the left flange, 35, the right flange, 36, the connector, 37, the pressure relief slot, 38, the flange, 39, the heat insulation sleeve, 40, the lead box, 41, the cylindrical part, 42, the conical head part, 43, the heating flange, 44, the sleeve part, 45, the sleeve part, the plug part, 46, the plug part, and 48.
Description of the embodiments
The invention is further described below with reference to the drawings and detailed description.
In the embodiment shown in fig. 1, a self-service printhead of 3D printer, including shower nozzle subassembly 1 and platform subassembly 2, be equipped with bottom plate 7 on the platform subassembly 2, tray 8 and mechanical stop gear, bottom plate 7 installs in the centre of platform subassembly 2 and lean on the lower position department, tray 8 is arranged in on the bottom plate 7 and joint on platform subassembly 2, mechanical stop gear arranges in the edge of bottom plate 7 and contacts with tray 8, shower nozzle subassembly 1 is arranged in directly over tray 8, shower nozzle subassembly 1 includes shower nozzle dustcoat 4, shower nozzle mechanism 5, piston mechanism and clout detection mechanism, shower nozzle mechanism 5 is connected with piston mechanism, shower nozzle mechanism 5 and piston mechanism all install on shower nozzle dustcoat 4, clout detection mechanism installs on piston mechanism, mechanical stop gear is connected with piston mechanism.
As shown in fig. 2 and 3, the platform assembly 2 comprises a printing platform 6, a mounting groove 11 is formed in the middle position of the printing platform 6, the mounting groove 11 comprises a square groove 15 and a special-shaped groove 14, the mounting groove 11 is integrated, one end of the special-shaped groove 14 is connected with one end of the square groove 15 at the right center position of the printing platform 6, the other end of the special-shaped groove 14 is arranged on one edge of the printing platform 6, the width of the special-shaped groove 14 gradually increases from one end of the square groove 15 to one edge of the printing platform 6, a gasket 12 is arranged on the back surface of the printing platform 6 and on the outer edge of the mounting groove 11, a bottom plate 7 is arranged at the mounting groove 11 of the printing platform 6 through the gasket 12, the width of the square groove 15 is smaller than the width of the special-shaped groove 14 at one end of the square groove 15, the width of the tray 8 is consistent with the width of the special-shaped groove 14 at one end of the square groove 15, the length of the tray 8 is larger than the length of the square groove 15, a pull handle 13 is arranged at the middle of one edge of the tray 8, and the tray 8 is arranged between the bottom plate 7 and the square groove 15. The mechanical limit mechanism comprises a mechanical limit switch 18 and an auxiliary limit switch 17, the mechanical limit switch 18 is arranged on the back of the printing platform 6 and is arranged on the right side of the square groove 15, the auxiliary limit switch 17 is arranged on the back of the printing platform 6 and is arranged on the left side of the square groove 15, the mechanical limit switch 18 and the auxiliary limit switch 17 correspond to each other on the left side and the right side of the back of the printing platform 6, and the tray 8 is arranged between the mechanical limit switch 18 and the auxiliary limit switch 17. The waste tank 9 is arranged on the printing platform 6 and above the mounting groove 11, the optical limit head 10 is arranged on the printing platform 6 and on the left side of the waste tank 9, the optical limit switch 16 is arranged on the back of the printing platform 6 and on the back of the optical limit head 10, and the optical limit head 10 is arranged in the optical limit switch 16.
As shown in fig. 4 and 5, the piston mechanism comprises a nozzle fixing block 32, a screw rod 28 and a stepping motor 31, one end of the screw rod 28 is provided with a guide sleeve 27, the side surface of the guide sleeve 27 is provided with a plugging screw 26, a pulley 25 is arranged on the plugging screw 26, the other end of the screw rod 28 is provided with a connector 36, the screw rod 28 is arranged on the stepping motor 31, the stepping motor 31 is arranged on the upper end surface of the nozzle fixing block 32, the nozzle housing 4 is integrally formed, the nozzle housing 4 comprises a motor cover 20 and a screw rod cover 19, the screw rod cover 19 is arranged above the motor cover 20, the nozzle fixing block 32 is arranged in the motor cover 20, one end of the screw rod 28 provided with the guide sleeve 27 is arranged in the screw rod cover 19, the screw rod cover 19 is provided with a guide groove 23, the pulley 25 is arranged in the guide groove 23, the nozzle mechanism 5 is arranged at the lower end of the nozzle fixing block 32, and the residue detecting mechanism is arranged on the screw rod 28 and the nozzle fixing block 32. The guide way 23 includes open slot 22 and guide way 21, and the top in guide way 21 is arranged in to open slot 22, is equipped with the recess on the pulley 25, and the width of open slot 22 is greater than the diameter of pulley 25, and the width in guide way 21 is less than the diameter of pulley 25 and is greater than the internal diameter of the recess on the pulley 25, and pulley 25 passes through the recess spacing on guide way 21, and the outside of lead screw cover 19 is equipped with panel beating protection casing 3, is equipped with waist type hole on the panel beating protection casing 3, and waist type hole's position corresponds with the position of guide way 23.
As shown in fig. 5 and 6, the residual material detecting mechanism comprises an optical limit switch 29 and a residual material sensing head 24, the residual material sensing head 24 is mounted on a guide sleeve 27, a through hole for placing a screw rod 28 is formed in the middle of the upper end of a spray head fixing block 32, a limit fixing support 30 is arranged on the upper end face of the spray head fixing block 32 and arranged on the side edge of a stepping motor 31, the limit fixing support 30 is L-shaped, one side of the limit fixing support 30 is fixedly mounted on the spray head fixing block 32, the optical limit switch 29 is mounted on the other side of the limit fixing support 30, the optical limit switch 29 is arranged above the stepping motor 31 and corresponds to the position of the residual material sensing head 24 up and down, a left flange 34, a right flange 35 and a rear flange 33 are arranged at the lower end of the spray head fixing block 32, the left flange 34, the right flange 35 and the rear flange 33 are integrally formed with the spray head fixing block 32, the left flange 34 and the right flange 35 are distributed in a bilateral symmetry, the left flange 34 and the right flange 35 are provided with mounting openings, the spray head mechanism 5 is mounted in the mounting openings, and the spray head fixing block 32 is fixedly connected with a spray head 4 housing through the rear flange 33. Wherein: the optical limit switch 29 is consistent with the optical limit switch 16, and is internally provided with a grating, and sensing is performed through the grating. The heat-insulating flanges 38 of the heat-insulating sleeve 39 are placed in the mounting openings of the left flange 34 and the right flange 35, thereby realizing that the heat-insulating sleeve 39 is mounted on the nozzle fixing block 32.
As shown in fig. 6 and 7, the spray head mechanism 5 comprises a heat insulation sleeve 39, a heating sleeve 44 and a heating plug 47, wherein the heating plug 47 is arranged at one end of the heating sleeve 44, the connector 36 of the screw rod 28 is arranged at the other end of the heating sleeve 44, the heating sleeve 44 and the heating plug 47 are both arranged in the heat insulation sleeve 39, a heat insulation flanging 38 is arranged at the upper end of the heat insulation sleeve 39, the heat insulation sleeve 39 is arranged on the spray head fixing block 32 through the heat insulation flanging 38, an opening hole is arranged in the middle of the lower end of the heat insulation sleeve 39, and the heating plug 47 is arranged in the opening hole. The upper end of the heating sleeve 44 is provided with a heating flange 43, the heating flange 43 is matched with the heat insulation flange 38, the heating sleeve 44 is installed in the heat insulation sleeve 39 through the matching of the heating flange 43 and the heat insulation flange 38, the height of the heating flange 43 is smaller than that of the heat insulation flange 38, the upper end face of the heating flange 43 is provided with a plurality of material guiding grooves 40, the cross section shape of the material guiding grooves 40 is triangular, and the depth of the material guiding grooves 40 is gradually increased from the outer edge of the heating flange 43 to the inner edge of the heating flange 43. The heating plug 47 is integrally formed, the heating plug 47 comprises a sleeve part 45 and a head sleeve part 48, the heating plug 47 is connected with the heating sleeve 44 through the sleeve part 45, a plurality of heating plates 46 are uniformly distributed on the outer side face of the head sleeve part 48 of the heating plug 47, the heating plates 46 are arranged on the outer side face of the sleeve part 45 of the heating plug 47, the connector 36 of the screw rod 28 is integrally formed, the connector 36 comprises a cylindrical part 41 and a cone part 42, the diameter of the cylindrical part 41 of the connector 36 is consistent with the inner diameter of the sleeve part 45 of the heating plug 47, the cone part 42 of the connector 36 is in a shape of an upper end cone and a lower end cylinder, the diameter of the lower end of the cone part 42 of the connector 36 is consistent with the diameter of the head sleeve part 48 of the heating plug 47, and a pressure relief groove 37 is formed on the side face of the lower end of the cone part 42 of the connector 36.
When the automatic printing device is used, firstly, the tray 8 is placed on the bottom plate 7 of the printing platform 6 through the handle 13, the tray 8 is placed into the square groove 15 of the mounting groove 11 along the special-shaped groove 14 of the mounting groove 11, the position of the tray 8 is limited through the mechanical limit switch 18 and the auxiliary limit switch 17, whether the tray 8 exists on the bottom plate 7 can be detected, if the tray 8 exists, the spray head assembly 1 works, and if the tray 8 does not exist, the spray head assembly 1 is locked and does not work; then, the spray head assembly 1 starts to work, the stepping motor 31 drives the screw rod 28 to move up and down, the pulley 25 on the plugging screw 26 is arranged in the guide rail groove 21 of the guide groove 23 to move up and down, the residual material induction head 24 on the guide sleeve 27 at the upper end of the screw rod 28 corresponds to the light limit switch 29 on the limit fixing support 30 to detect the material quantity in the heating sleeve 44, the connector 36 at the lower end of the screw rod 28 is arranged in the heating sleeve 44 to move up and down, and the heat insulation sleeve 39 is arranged at the outer side of the heating sleeve 44 to insulate heat, so that the safety of the printer is improved; the material placed on the heating flange 43 of the heating sleeve 44 can flow into the heating sleeve 44 through the material guiding groove 40, and is extruded and printed on the tray 8 through the connector 36; the design of the heating plate 46 can ensure that the materials in the heating plug 47 are melted into liquid, so that the normal use of the printer is ensured; after printing, the excessive materials left in the heating sleeve 44 and the heating plug 47 can be continuously printed into the waste tank 9, and the materials are positioned by the optical limiting head 10 and the optical limiting switch 16 on the printing platform 6, so that the subsequent reliable use of the printer can be ensured after all the materials are printed.
Claims (5)
1. The self-service printing head of the 3D printer is characterized by comprising a spray head assembly (1) and a platform assembly (2), wherein the platform assembly (2) is provided with a bottom plate (7), a tray (8) and a mechanical limiting mechanism, the bottom plate (7) is arranged in the middle of the platform assembly (2) and is positioned close to the lower side, the tray (8) is arranged on the bottom plate (7) and is clamped on the platform assembly (2), the mechanical limiting mechanism is arranged at the edge of the bottom plate (7) and is contacted with the tray (8), the spray head assembly (1) is arranged right above the tray (8), the spray head assembly (1) comprises a spray head outer cover (4), a spray head mechanism (5), a piston mechanism and a residual material detection mechanism, the spray head mechanism (5) is connected with the piston mechanism, the spray head mechanism (5) and the piston mechanism are all arranged on the spray head outer cover (4), the mechanical limiting mechanism is connected with the piston mechanism, the piston mechanism comprises a piston block (31), a guide screw (26) and a guide screw (27) are arranged on one end of the guide screw (27), the other end of the screw rod (28) is provided with a connector (36), the screw rod (28) is arranged on a stepping motor (31), the stepping motor (31) is arranged on the upper end face of a nozzle fixing block (32), the nozzle housing (4) is integrally formed, the nozzle housing (4) comprises a motor housing (20) and a screw rod cover (19), the screw rod cover (19) is arranged above the motor housing (20), the nozzle fixing block (32) is arranged inside the motor housing (20), one end of the screw rod (28) provided with a guide sleeve (27) is arranged in the screw rod cover (19), the screw rod cover (19) is provided with a guide groove (23), a pulley (25) is arranged in the guide groove (23), the nozzle mechanism (5) is arranged at the lower end of the nozzle fixing block (32), the nozzle housing (4) is arranged on the screw rod (28) and the nozzle fixing block (32), the guide groove (23) comprises an opening groove (22) and a guide groove (21) and the opening groove (21) is arranged on the opening groove (25) of the pulley groove (25), the width of the guide rail groove (21) is smaller than the diameter of the pulley (25) and larger than the inner diameter of the groove on the pulley (25), the pulley (25) is limited on the guide rail groove (21) through the groove, a sheet metal protection cover (3) is arranged on the outer side of the screw rod cover (19), a waist-shaped hole is formed in the sheet metal protection cover (3), the position of the waist-shaped hole corresponds to that of the guide groove (23), the spray head mechanism (5) comprises a heat insulation sleeve (39), a heating sleeve (44) and a heating plug (47), the heating plug (47) is arranged at one end of the heating sleeve (44), a connector (36) of the screw rod (28) is arranged at the other end of the heating sleeve (44), the heating sleeve (44) and the heating plug (47) are both arranged in the heat insulation sleeve (39), a heat insulation flange (38) is arranged at the upper end of the heat insulation sleeve (39), the heat insulation sleeve (39) is arranged on a spray head fixing block (32) through the heat insulation flange (38), the lower end of the heat insulation sleeve (39) is provided with an opening, the heating flange (43) is arranged at the lower end of the heat insulation sleeve (39) and is provided with the heat insulation flange (43), the heating sleeve (44) is arranged in the heat insulation sleeve (39) in a matching way through the heating flanging (43) and the heat insulation flanging (38), the height of the heating flanging (43) is smaller than that of the heat insulation flanging (38), a plurality of guide grooves (40) are uniformly distributed on the outer side face of the sleeve part (48) of the heating flanging (47), the cross section of the guide grooves (40) is triangular, the depth of the guide grooves (40) is gradually increased from the outer edge of the heating flanging (43) to the inner edge of the heating flanging (43), the heating plug (47) is integrally formed, the heating plug (47) comprises a sleeve part (45) and a head part (48), the heating plug (47) is connected with the heating sleeve (44) through the sleeve part (45), a plurality of heating pieces (46) are uniformly distributed on the outer side face of the sleeve part (48) of the heating plug (47), the depth of the guide grooves (40) is gradually increased from the outer edge of the heating flanging (43) to the inner edge of the heating flanging (43), the connecting head part (28) is integrally formed, the connecting head part (36) of the heating plug (36) is integrally formed, the connecting plug part (36) is integrally formed, the diameter of the connecting plug part (41) is consistent with the inner diameter of the cylindrical sleeve part (41), the shape of the conical head part (42) of the connector (36) is conical at the upper end and cylindrical at the lower end, the diameter of the lower end of the conical head part (42) of the connector (36) is consistent with the diameter of the head sleeve part (48) of the heating plug (47), and a pressure relief groove (37) is formed in the side face of the lower end of the conical head part (42) of the connector (36).
2. The self-service printhead of claim 1, wherein the platform assembly (2) comprises a printing platform (6), a mounting groove (11) is formed in the middle of the printing platform (6), the mounting groove (11) comprises a square groove (15) and a special-shaped groove (14), the mounting groove (11) is integrated, the square groove (15) is arranged at the right center of the printing platform (6), one end of the special-shaped groove (14) is connected with one end of the square groove (15), the other end of the special-shaped groove (14) is arranged on one edge of the printing platform (6), the width of the special-shaped groove (14) gradually increases from one end of the square groove (15) to one edge of the printing platform (6), a gasket (12) is arranged on the back surface of the printing platform (6) and on the outer edge of the mounting groove (11), the bottom plate (7) is arranged at the mounting groove (11) of the printing platform (6) through the gasket (12), the width of the square groove (15) is smaller than the width of the special-shaped groove (14) is arranged at one end of the square groove (15) and is smaller than the width of the square groove (15) and is equal to the width of the special-shaped groove (15) at one end (15) of the special-shaped groove (15) and is arranged at one end of the special-shaped groove (15) and is equal to the width of the special-shaped groove (15, a pull handle (13) is arranged in the middle of one edge of the tray (8), and the tray (8) is arranged between the bottom plate (7) and the square groove (15).
3. The self-service printing head of the 3D printer according to claim 2, wherein the mechanical limit mechanism comprises a mechanical limit switch (18) and an auxiliary limit switch (17), the mechanical limit switch (18) is arranged on the back of the printing platform (6) and is arranged on the right side of the square groove (15), the auxiliary limit switch (17) is arranged on the back of the printing platform (6) and is arranged on the left side of the square groove (15), the mechanical limit switch (18) and the auxiliary limit switch (17) are corresponding to each other on the left side and the right side of the back of the printing platform (6), and the tray (8) is arranged between the mechanical limit switch (18) and the auxiliary limit switch (17).
4. A self-service printhead of a 3D printer according to claim 2 or 3, wherein the waste tank (9) is arranged on the printing platform (6) and above the mounting groove (11), the optical limit head (10) is arranged on the printing platform (6) and on the left side of the waste tank (9), the optical limit switch (16) is arranged on the back of the printing platform (6) and on the back of the optical limit head (10), and the optical limit head (10) is arranged in the optical limit switch (16).
5. The self-service printing head of the 3D printer according to claim 1, wherein the residual material detection mechanism comprises an optical limit switch (29) and a residual material induction head (24), the residual material induction head (24) is arranged on a guide sleeve (27), a through hole for placing a screw rod (28) is arranged in the middle of the upper end of a nozzle fixing block (32), a limit fixing bracket (30) is arranged on the upper end face of the nozzle fixing block (32) and is arranged on the side edge of a stepping motor (31), the limit fixing bracket (30) is L-shaped, one side of the limit fixing bracket (30) is fixedly arranged on a nozzle fixing block (32), the other side end of the limit fixing bracket (30) is provided with the optical limit switch (29), the optical limit switch (29) is arranged above the stepping motor (31) and corresponds to the upper and lower positions of the residual material induction head (24), the lower end of the nozzle fixing block (32) is provided with a left flanging (34), a right flanging (35) and a rear flanging (33), the left flanging (35) and the flanges (35) are symmetrically arranged on the nozzle fixing block (35) and the flanges (35) respectively, the spray head fixing block (32) is fixedly connected with the spray head outer cover (4) through a rear flanging (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566118.5A CN109624320B (en) | 2018-12-21 | 2018-12-21 | Self-service print head of 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566118.5A CN109624320B (en) | 2018-12-21 | 2018-12-21 | Self-service print head of 3D printer |
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| CN109624320A CN109624320A (en) | 2019-04-16 |
| CN109624320B true CN109624320B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811566118.5A Active CN109624320B (en) | 2018-12-21 | 2018-12-21 | Self-service print head of 3D printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110154389A (en) * | 2019-04-26 | 2019-08-23 | 长兴时印科技有限公司 | A kind of western-style restaurant's 3D printing equipment |
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| CN203789039U (en) * | 2014-02-08 | 2014-08-27 | 郑州乐彩科技股份有限公司 | Chocolate 3D printer as well as chocolate extruding device thereof |
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| CN109624320A (en) | 2019-04-16 |
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Effective date of registration: 20200212 Address after: Room 510-1, building 12, No. 1818-2, Wenyi West Road, Yuhang street, Yuhang District, Hangzhou City, Zhejiang Province Applicant after: Hangzhou Pan Da Technology Co.,Ltd. Address before: 313100, room three, building 105, Science Park, intersection of four road and Taihu Road, Huzhou, Changxing County, Zhejiang, China Applicant before: CHANGXING SHIYIN TECHNOLOGY CO.,LTD. |
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