CN114226640B - Double-nozzle wax pattern 3D printer - Google Patents
Double-nozzle wax pattern 3D printer Download PDFInfo
- Publication number
- CN114226640B CN114226640B CN202111328202.5A CN202111328202A CN114226640B CN 114226640 B CN114226640 B CN 114226640B CN 202111328202 A CN202111328202 A CN 202111328202A CN 114226640 B CN114226640 B CN 114226640B
- Authority
- CN
- China
- Prior art keywords
- nozzle
- screw
- wax
- printer
- melting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a double-nozzle wax pattern 3D printer, which comprises a printer frame, a working platform, a wire rod supply cylinder, a crushing mechanism, a melting mechanism, a feeding mechanism, a pressurizing mechanism, a moving mechanism and a double-nozzle mechanism, wherein the crushing mechanism, the melting mechanism, the feeding mechanism, the pressurizing mechanism, the moving mechanism and the double-nozzle mechanism are arranged on the printer frame; the melting mechanism is arranged below the crushing mechanism and receives the blocky raw materials processed by the crushing mechanism through the conical barrel; the pressurizing mechanism is used for extruding the liquid wax from the melting mechanism; the feeding mechanism comprises a servo electric cylinder and a storage tank, and the storage tank is connected with a discharge hole of the melting mechanism; the motion mechanism comprises a water X-Y motion mechanism and a Z-axis motion mechanism; the double-nozzle mechanism comprises a height difference switching device, a screw extrusion nozzle and a support material printing nozzle. The invention is helpful for printing the wax mould with complex structure, so that the two spray heads generate height difference, the collision between the spray heads and printing materials is avoided, and the quality and the printing efficiency of the wax mould are greatly improved.
Description
Technical Field
The invention relates to the field of 3D printing of wax patterns, in particular to a double-nozzle wax pattern 3D printer.
Background
Wax molding is an important procedure in a lost wax casting process, the traditional wax molding preparation needs mold opening and wax injection, the production and research period is long, and more small-batch trial-production tasks cannot be met under the personalized requirements, so that the rapid preparation of various complex wax molds is definitely the key for advancing the lost wax casting development. Such as gearboxes, impeller blades and other power components, often require trial development and small volume manufacturing, and mold design requires long-term development and high mold opening costs if conventional investment casting techniques are employed.
The rapid investment precision casting technology combines the 3D printing technology and the investment precision casting technology, adopts a 3D printing prototype to replace the traditional wax mould as an investment, directly makes a shell on the basis of the investment, and then removes the 3D printing prototype by high-temperature roasting, so that casting pouring forming can be performed.
In the prior art, like the 'a wax mould 3D printer (201910588307.0) for investment casting' of the Chinese patent, compressed air is used as a liquid wax extrusion power source, and the extrusion power is easy to be influenced by external and internal physical change factors in the printing process, so that the extrusion power is fluctuated, and meanwhile, a printing device for a non-support material is not ideal. The printing method has low molding precision and efficiency, simple wax pattern structure and high application limit.
Disclosure of Invention
The invention provides a double-nozzle wax pattern 3D printer aiming at the problems existing in the prior art in preparing wax patterns.
The invention provides a double-nozzle wax pattern D printer, which comprises a printer frame, a working platform, a wire rod supply cylinder, a crushing mechanism, a melting mechanism, a feeding mechanism, a pressurizing mechanism, a moving mechanism and a double-nozzle mechanism, wherein the crushing mechanism, the melting mechanism, the feeding mechanism, the pressurizing mechanism, the moving mechanism and the double-nozzle mechanism are arranged on the printer frame;
the feeding end of the melting mechanism is communicated with the discharging end of the crushing mechanism;
the pressurizing mechanism is used for increasing the pressure in the melting mechanism so as to extrude the liquid wax in the melting mechanism;
the feeding mechanism comprises a servo electric cylinder, a push rod, a movable piece and a storage tank, wherein the storage tank is connected with a discharge hole of the melting mechanism, the movable piece is positioned in the storage tank, one end of the push rod is connected with the movable piece, and the other end of the push rod is connected with the servo electric cylinder so as to extrude liquid wax out of the storage tank under the action of the servo electric cylinder;
the motion mechanism comprises an X-Y motion mechanism and a Z-axis motion mechanism;
the double-nozzle mechanism is connected with the X-Y moving mechanism to move in the X, Y direction and comprises a transverse moving mechanism, two height difference switching devices, a screw extrusion nozzle communicated with the storage tank and a supporting material printing nozzle for supporting raw materials by a wire supply cylinder, wherein the transverse moving mechanism and the two height difference switching devices are used for realizing the conversion and the movement of the double nozzle in the transverse and vertical directions, the transverse moving mechanism is used for adjusting the positions of the screw extrusion nozzle and the supporting material printing nozzle in the transverse direction, and the two height difference switching devices are respectively connected with the screw extrusion nozzle and the supporting material printing nozzle to adjust the positions of the screw extrusion nozzle and the supporting material printing nozzle in the height direction;
the working platform is positioned below the double-nozzle mechanism and can move in the Z-axis direction under the action of the Z-axis moving mechanism.
Further, the melting mechanism comprises a cavity, a first electric heating block and a first temperature detection device, wherein the first electric heating block is attached to the inner wall of the cavity and used for melting the block wax processed by the crushing mechanism and forming a closed loop with the first temperature detection device.
Further, the melting mechanism further comprises a wax outlet provided with a filter screen and an electric switch, wherein the filter screen is used for filtering the liquid wax, and the electric switch is arranged below the wax outlet and used for controlling the flow of the liquid wax.
Further, the melting mechanism further comprises an air inlet and an air pressure detection device, wherein the air inlet is communicated with the pressurizing mechanism, and the air pressure detection device is used for detecting air pressure in the cavity.
Further, the storage tank comprises a second electric heating block, a second temperature detection device and an electromagnetic valve, wherein the second temperature detection device is arranged at the bottom of the inner cavity, the second electric heating block is arranged on the outer wall of the inner cavity, and the electromagnetic valve is used for controlling the extrusion capacity of the liquid wax.
Further, the double-nozzle mechanism further comprises a mounting base and two transverse position switching nut blocks arranged on the mounting base, the mounting base is connected with the X-Y moving mechanism, the two transverse position switching nut blocks can move in the transverse direction, the two height difference switching devices are fixedly connected with the two transverse position switching nut blocks respectively, the screw extrusion nozzle and the support material printing nozzle are fixedly connected with the two height difference switching devices respectively, so that double-nozzle switching is completed, and the two transverse position switching nut blocks are in a completely synchronous state in the horizontal moving process.
Further, each height difference switching device comprises a third driving motor, a transmission mechanism, a ball screw and a height difference switching nut block, wherein a motor shaft of the third driving motor is connected with an input end of the transmission mechanism, an output end of the transmission mechanism is connected with the ball screw in a transmission manner so that the ball screw rotates, the height difference switching nut block is sleeved on the ball screw, and a screw extrusion nozzle or a supporting material printing nozzle is fixedly connected with the height difference switching nut block.
Further, the transmission mechanism comprises a mounting shell, a driving wheel, a first driven wheel and a second driven wheel, wherein the driving wheel, the first driven wheel and the second driven wheel are positioned in the mounting shell, the driving wheel is connected with a motor shaft of the third driving motor, the first driven wheel is meshed with the driving wheel, the second driven wheel is meshed with the first driven wheel, and the second driven wheel is fixed to one end of the ball screw to drive the ball screw to rotate.
Further, the screw extrusion nozzle comprises a screw barrel, a screw, a nozzle and a thimble, wherein the screw is rotationally arranged in the screw barrel to extrude liquid wax, the screw barrel is communicated with the storage tank, the nozzle is arranged at the bottom of the screw barrel, a supporting rod is arranged at the bottom of the screw barrel, one end of the thimble is fixed on the supporting rod, and the other end of the thimble is inserted into the bottom of the screw.
Further, a blade is arranged on the periphery of the bottom of the screw.
Further, the smashing mechanism is located at the topmost end of the printer frame, and the discharging end of the smashing mechanism and the feeding end of the melting mechanism are located at the same axis.
Further, the screw extrusion nozzle comprises a second driving motor, a heating hose, a nozzle, a screw barrel, a thimble and a nozzle heating block, wherein a conical groove combined with the shape of the thimble is formed in the bottom of the screw, a supporting rod is arranged at the bottom of the screw barrel, the thimble is fixed on the supporting rod and used for supporting the screw, and symmetrical blades are arranged on the periphery of the bottom of the screw so as to scrape liquid wax deposited on the supporting rod.
Compared with the prior art, the invention at least has the following beneficial effects:
according to the wax pattern 3D printer for double-nozzle investment casting, the servo electric cylinder is introduced as feeding power, so that the supply of liquid wax is faster and more stable, and the printing efficiency is improved; the extrusion amount of the liquid wax in unit time is more uniform by adopting a screw extrusion mode, the average error of the extrusion line width is small, and the printing precision is further improved; through setting up two shower nozzle switching mechanism, realize printing bearing structure function, make two shower nozzles produce the difference in height, avoid shower nozzle and printing material to collide with to can print the wax matrix that the structure is more complicated, improve the suitability, increase wax matrix quality.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a melting mechanism in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a storage tank structure in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 4 (a) is a top view of a storage tank in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention, and (b) is a cross-sectional view from A-A in fig. (a).
Fig. 5 (a) is a front view of a storage tank in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention, and (B) is a cross-sectional view of B-B in fig. (a).
Fig. 6 is a schematic diagram of the overall structure of a dual-nozzle mechanism in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a height difference switching device in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a transmission mechanism of a height difference switching device in a dual-nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of the overall structure of a screw extrusion nozzle in a dual nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of an internal structure of a screw extrusion nozzle in a dual nozzle wax pattern 3D printer according to an embodiment of the present invention.
Fig. 11 (a) is a top view of a screw extrusion head according to an embodiment of the present invention, and (b) is a C-C cross-sectional view of fig. (a).
Reference numerals illustrate: 1. a printer frame; 2. a crushing mechanism; 3. a melting mechanism; 31. a sealing plug; 32. an air inlet; 33. a first temperature detection device; 34. an electrical switch; 35. a wax outlet; 36. a first electrical heating block; 37. an air pressure detecting device; 38. a cavity; 4. a servo electric cylinder; 5. a storage tank; 51. a push rod; 52. a feed inlet; 53. an electromagnetic valve; 54. a second temperature detecting means; 55. a discharge port; 56. an inner cavity; 57. a movable member; 58. a second electric heating block; 6. a dual spray mechanism; 61. a first driving motor; 62. sliding a lead screw; 63. screw extrusion nozzle; 631. a second driving motor; 632. heating the hose; 633. a screw barrel; 634. a nozzle; 635. a screw; 636. a thimble; 637. a nozzle heating block; 64. a support material printing nozzle; 65. a height difference switching device; 651. an upper substrate; 652. a third driving motor; 653. a speed reducer; 654. a lower substrate; 655. a transmission mechanism; 6551. a second driven wheel; 6552. a first driven wheel; 6553. a driving wheel; 656. a ball screw; 657. a first guide shaft; 658. a height difference switching nut block; 66. a lateral position switching nut block; 67. a second guide shaft; 68. a guide hole; 69. a bearing seat; 70. a coupling; 7. a working platform; 8. a Z-axis moving mechanism; 9. an X-Y moving mechanism; 10. a wire supply cylinder; 11. a pressurizing mechanism.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 11, the dual-nozzle wax pattern 3D printer provided by the present invention includes a printer frame 1, a working platform 7, a wire supply cylinder 10, and a pulverizing mechanism 2, a melting mechanism 3, a feeding mechanism, a pressurizing mechanism 11, a moving mechanism and a dual-nozzle mechanism 6 which are disposed on the printer frame 1.
In some embodiments of the present invention, referring to fig. 1, a comminution mechanism 2 is located at the top of the printer frame 1 for comminuting bulk material into smaller bulk material. The discharging end of the crushing mechanism 2 and the feeding end of the melting mechanism 3 are positioned at the same axis position so as to ensure that raw materials in the crushing mechanism 2 can enter the melting mechanism 3.
The melting mechanism 3 is arranged below the crushing mechanism 2 and is used for receiving the blocky raw materials processed by the crushing mechanism 2 through a conical barrel. Referring to fig. 2, in some embodiments of the present invention, the melting mechanism 3 includes a conical cylinder, a cavity 38, a first electric heating block 36, a first temperature detecting device 33, a sealing plug 31, an air inlet 32, and an air pressure detecting device 37, wherein the sealing plug 31 is located above the cavity 38, the first electric heating block 36 is provided with a plurality of electric heating blocks, and is attached to an inner wall of the cavity 38, and symmetrically distributed, and is used for melting the block wax processed by the pulverizing mechanism 2, and forms a closed loop with the first temperature detecting device 33, and the sealing plug 31 is used for being disposed at a feed inlet of the cavity 38 to seal. The gas inlet 32 is provided in the wall of the cavity 38 and communicates with the pressurizing mechanism 11 to introduce pressurized gas. The air pressure detecting device 37 is provided on the wall of the cavity 38 for detecting the air pressure in the cavity 38.
In some embodiments of the present invention, the melting mechanism 3 further includes a wax outlet 35 provided with a filter screen for filtering the liquid wax, and an electric switch 34 provided below the wax outlet 35 for controlling the flow of the liquid wax.
In the present invention, the pressurizing mechanism 11 is used to increase the pressure in the melting mechanism 3 to more conveniently extrude the liquid wax in the melting mechanism 3. In some embodiments of the present invention, the pressurizing mechanism 11 is an air compressor.
In some embodiments of the present invention, referring to fig. 1 and 3-5, the feeding mechanism includes a servo cylinder 4, a push rod 51, a movable member 57 and a storage tank 5, the movable member 57 is located in an inner cavity 56 of the storage tank 5, the movable member 57 is closely contacted with a cavity wall of the inner cavity 56, one end of the push rod 51 is connected with the movable member 57, and the other end is connected with the servo cylinder 4 to extrude the liquid wax out of the storage tank 5 under the action of the servo cylinder 4. The material storage tank 5 is connected with the discharge hole of the melting mechanism 3, and the material storage tank 5 is connected with the screw extrusion nozzle 63 through a heating hose 632. The storage tank 5 still includes feed inlet 52, discharge gate 55, second electric heating block 58, second temperature-detecting device 54 and solenoid valve 53, second temperature-detecting device 54 sets up the inner chamber 56 bottom, second electric heating block 58 has a plurality ofly, sets up at the inner chamber 56 outer wall, is the symmetric distribution, solenoid valve 53 sets up in discharge gate 55 one end for control liquid wax extrusion capacity.
Further, in some embodiments of the present invention, the first temperature detecting means and the second temperature detecting means each employ a temperature sensor.
In the invention, the cross section of the inner cavity 56 is consistent with the cross section of the movable piece 57, so that the movable piece 57 can be closely attached to the cross section of the inner cavity 56, and the sealing between the two parts is good. Further, in some embodiments of the present invention, the cross-section of the lumen 56 and the cross-section of the moveable member 57 are both circular. The movable member 57 has a disk shape. The servo cylinder 4 pushes the sealing disk closely contacted with the inner cavity 56 through the push rod 51 to squeeze out the liquid wax.
In some embodiments of the present invention, the movement mechanism includes an X-Y movement mechanism 9 and a Z-axis movement mechanism 8, and the movement mechanism includes an X-Y movement mechanism 9 and a Z-axis movement mechanism 8; the dual spray mechanism 6 is connected to the X-Y moving mechanism 9 to move in the direction X, Y. Referring to fig. 6, the dual head mechanism 6 includes a lateral movement mechanism, two height difference switching devices 65, a screw extrusion head 63 communicating with the storage tank 5, and a support material printing head 64 provided with a support material by the wire supply cylinder 10, the lateral movement mechanism, the two height difference switching devices 65 being for effecting switching and movement of the dual head in the lateral and vertical directions, the lateral movement mechanism being for adjusting positions of the screw extrusion head 63 and the support material printing head 64 in the lateral direction, the two height difference switching devices 65 being respectively connected with the screw extrusion head 63 and the support material printing head 64 to adjust positions of the screw extrusion head 63 and the support material printing head 64 in the height direction; the working platform 7 is located below the double-nozzle mechanism 6 and can move in the Z-axis direction under the action of the Z-axis moving mechanism 8. The double-nozzle mechanism 6 completes the movement in the horizontal direction through the X-Y moving mechanism 9, the Z-axis moving mechanism 8 works to realize the movement of the working platform 7 in the vertical direction, and the conversion between the screw extrusion nozzle 63 and the support material printing nozzle 64 is realized through the transverse moving mechanism and the two height difference switching devices 65. The two spray heads are enabled to generate height difference through the height difference switching device 65, collision between the spray heads and printing materials is avoided, and meanwhile the quality and the printing efficiency of the wax pattern are greatly improved.
The dual spray mechanism 6 further comprises a mounting base 71 and two lateral position switching nut blocks 66 arranged on the mounting base 71, the mounting base 71 is connected with the X-Y moving mechanism 9 to realize the movement of the dual spray mechanism 6 in the X, Y direction, the two lateral position switching nut blocks 66 can move in the lateral direction, the two height difference switching devices 65 are respectively and fixedly connected to the two lateral position switching nut blocks 66, the screw extrusion spray head 63 and the supporting material printing spray head 64 are respectively connected with the two height difference switching devices 65 to finish the switching of the dual spray head, and the lateral movement states of the two lateral position switching nut blocks 66 are consistent.
The double-nozzle mechanism 6 is matched with the X-Y moving mechanism 9 to finish the movement in the X, Y direction, and the working platform 7 is moved in the Z direction through the Z-axis moving mechanism and is matched with the double-nozzle mechanism 6 to finish the printing work.
Further, as shown in fig. 6, the dual spray mechanism 6 further includes a first driving motor 61, a coupling 70 connected to an output shaft of the first driving motor 61, and a sliding screw 62 connected to the coupling 70, wherein both ends of the sliding screw 62 are disposed on bearing seats 69, and second guide shafts 67 are disposed on both sides of the sliding screw 62. The two lateral position switching nut blocks 66 are sleeved on the sliding screw 62 and move along the length direction of the second guide shaft 67. The first driving motor 61 works, and drives the two transverse position switching nut blocks 66 to move in the transverse direction through the coupler 70 and the sliding screw 62, so that the switching of the double spray heads in the transverse position is realized.
Each height difference switching device 65 comprises an upper substrate 651, a third driving motor 652, a speed reducer 653, a lower substrate 654, a ball screw 656, a transmission mechanism 655 and a height difference switching nut block 658, wherein the third driving motor 652 is fixed on the upper substrate 651, the input end of the speed reducer 653 is connected with the motor shaft of the third driving motor 652, and the output end of the speed reducer 653 is connected with the transmission mechanism 655. The transmission mechanism 655 is disposed on a lower substrate 654, the transmission mechanism 655 includes a driving wheel 6553, a first driven wheel 6552, and a second driven wheel 6551, the driving wheel 6553 is connected with a motor shaft of the speed reducer 653, the first driven wheel 6552 is rotatably disposed on the lower substrate 654, the first driven wheel 6552 is meshed with the driving wheel 6553, the second driven wheel 6551 is meshed with the first driven wheel 6552, and is fixed to one end of the ball screw 656, and a height difference switching nut block 658 is sleeved and fixed on the ball screw 656. The speed reducer 653 is used to amplify the torque of the third drive motor 652 to increase the driving force. The third driving motor 652 operates to transmit power to the driving wheel 6553 through the speed reducer 653, and then transmit power to the ball screw 656 through the first driven wheel 6552 and the second driven wheel 6551, thereby driving the ball screw 656 to rotate and further driving the height difference switching nut block 658 fixed on the ball screw 656 to move in the height direction.
The transmission 655 further includes a mounting housing, and the primary pulley 6553, the primary driven pulley 6552, and the secondary driven pulley 6551 are all positioned within the mounting housing for protection, improving service life.
In some embodiments of the present invention, each of the height difference switching devices 65 further includes a first guide shaft 657 therein, and the height difference switching nut block 658 is guided by the first guide shaft 657.
The screw extrusion head 63 is fixed to a level difference switching nut block 658 of a level difference switching device 65 provided correspondingly thereto. In some embodiments of the present invention, referring to fig. 9-10, the screw extrusion nozzle 63 includes a second driving motor 631, a screw barrel 633, a heating hose 632, a nozzle 634, a screw 635, a thimble 636, and a nozzle heating block 637, the screw barrel 633 is in communication with the storage tank 5 through the heating hose 632, the screw barrel 633 is connected to the nozzle heating block 637, the nozzle 634 is disposed at the bottom of the nozzle heating block 637, and the screw 635 is connected to the second driving motor 631 and located in the screw barrel 633. The bottom of the screw 635 is provided with a conical groove combined with the shape of the thimble 636, the bottom of the screw cylinder 633 is provided with a supporting rod, the thimble 636 is fixed on the supporting rod and used for supporting the screw 635, and the periphery of the bottom of the screw 635 is provided with symmetrical blades so as to scrape liquid wax deposited on the supporting rod. The screw 635 is used for quantitatively and stably extruding the liquid wax, and the thimble 636 is used for supporting the screw 635, and the second driving motor 631 and the screw 635 are always in a coaxial position. The nozzle heating block 637 is used to heat the casting wax so that the casting wax is always in a molten state.
The working process of the double-nozzle wax pattern 3D printer provided by the embodiment of the invention is as follows:
s1, putting block casting wax into a crushing mechanism 2 for crushing; the electric switch 34 at the bottom of the melting mechanism 3 is in a closed state, the sealing plug 31 of the melting mechanism 3 is opened, crushed casting wax falls into the cavity 38 of the melting mechanism 3 through the feed port of the melting mechanism 3, and then the feed port of the melting mechanism 3 is sealed by using the sealing plug 31; turning on the first electric heating block 36 to heat the casting wax, observing the first temperature detecting device 33, and stopping heating until the heating temperature is higher than the melting point of the casting wax; after a period of time, the pressurizing mechanism 11 is opened, the air pressure detecting device 37 is observed, when the equal pressure reaches a preset value, the electric switch 34 is opened, liquid wax is injected into the storage tank 5, after the preset capacity is reached, the injection is stopped, and the second electric heating block 58 in the storage tank 5 is operated to heat, so that the casting wax is always in a molten state.
S2, opening a switch of the servo electric cylinder 4, setting the flow position of the electromagnetic valve 53, and when the liquid wax is about to enter the screw extrusion nozzle 63, operating the X-Y moving mechanism 9 and the Z-axis moving mechanism 8, and starting printing; if the supporting material needs to be printed, the transverse moving mechanism and the height difference switching device 65 in the double-nozzle mechanism 6 are started, the supporting material printing nozzle 64 is moved to the printing position, meanwhile, the screw extrusion nozzle 63 is lifted through the height difference switching device 65 to print, and the double-nozzle switching is repeatedly performed in this way, so that the printing is finally completed.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and the scope of the present application is not limited thereto, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (10)
1. The double-nozzle wax pattern 3D printer is characterized by comprising a printer frame (1), a working platform (7), a wire rod supply cylinder (10) and a crushing mechanism (2), a melting mechanism (3), a feeding mechanism, a pressurizing mechanism (11), a moving mechanism and a double-nozzle mechanism (6) which are arranged on the printer frame (1);
the feeding end of the melting mechanism (3) is communicated with the discharging end of the crushing mechanism (2), and the crushing mechanism (2) is used for crushing a large block of raw materials;
the pressurizing mechanism (11) is used for increasing the pressure in the melting mechanism (3);
the feeding mechanism comprises a servo electric cylinder (4), a push rod (51), a movable piece (57) and a storage tank (5), wherein the storage tank (5) is connected with a discharge hole of the melting mechanism (3), the movable piece (57) is positioned in the storage tank (5), one end of the push rod (51) is connected with the movable piece (57), and the other end of the push rod is connected with the servo electric cylinder (4) so as to extrude liquid wax out of the storage tank (5) under the action of the servo electric cylinder (4);
the motion mechanism comprises an X-Y motion mechanism (9) and a Z-axis motion mechanism (8);
the double-nozzle mechanism (6) is connected with the X-Y moving mechanism (9) to move in the direction of X, Y, the double-nozzle mechanism (6) comprises a transverse moving mechanism, two height difference switching devices (65), a screw extrusion nozzle (63) communicated with the storage tank (5) and a supporting material printing nozzle (64) for supporting raw materials by a wire supply cylinder (10), the transverse moving mechanism and the two height difference switching devices (65) are used for realizing the conversion and the movement of the double-nozzle in the transverse direction and the vertical direction, the transverse moving mechanism is used for adjusting the positions of the screw extrusion nozzle (63) and the supporting material printing nozzle (64) in the transverse direction, and the two height difference switching devices (65) are respectively connected with the screw extrusion nozzle (63) and the supporting material printing nozzle (64) to adjust the positions of the screw extrusion nozzle (63) and the supporting material printing nozzle (64) in the height direction;
the working platform (7) is positioned below the double-nozzle mechanism (6) and can move in the Z-axis direction under the action of the Z-axis moving mechanism (8).
2. A dual spray wax pattern 3D printer according to claim 1, characterized in that the melting mechanism (3) comprises a cavity (38), a first electric heating block (36) and a first temperature detecting device (33), wherein the first electric heating block (36) is attached to the inner wall of the cavity (38) for melting the block wax processed by the crushing mechanism (2) and forms a closed loop with the first temperature detecting device (33).
3. A dual spray wax pattern 3D printer as claimed in claim 2, wherein the melting mechanism (3) further comprises a wax outlet (35) provided with a filter screen for filtering the liquid wax and an electrical switch (34), the electrical switch (34) being arranged below the wax outlet for controlling the flow of the liquid wax.
4. A dual spray wax pattern 3D printer as claimed in claim 2, wherein the melting means (3) further comprises an air inlet (32) and an air pressure detecting means (37), the air inlet (32) being in communication with the pressurizing means (11), the air pressure detecting means (37) being arranged to detect the air pressure in the cavity (38).
5. The double-nozzle wax pattern 3D printer according to claim 1, wherein the storage tank (5) comprises a second electric heating block (58), a second temperature detection device (54) and an electromagnetic valve (53), the second temperature detection device (54) is arranged in an inner cavity (56) of the storage tank (5), the second electric heating block (58) is arranged on the outer wall of the inner cavity (56), and the electromagnetic valve (53) is used for controlling the extrusion capacity of the liquid wax.
6. The dual-nozzle wax pattern 3D printer of claim 1, wherein the dual-nozzle mechanism (6) further comprises a first driving motor (61), a sliding screw (62) driven by the first driving motor (61), a mounting base (71) and two transverse position switching nut blocks (66) arranged on the mounting base (71), the mounting base (71) is connected with the X-Y moving mechanism (9), the two transverse position switching nut blocks (66) are sleeved on the sliding screw (62) to move in the transverse direction, the two height difference switching devices (65) are fixedly connected with the two transverse position switching nut blocks (66) respectively, and the screw extrusion nozzle (63) and the support material printing nozzle (64) are fixedly connected with the two height difference switching devices (65) respectively to complete dual-nozzle switching.
7. The dual-nozzle wax pattern 3D printer of claim 1, wherein each of the height-difference switching devices (65) comprises a third driving motor (652), a speed reducer (653), a transmission mechanism (655), a ball screw (656) and a height-difference switching nut block (658), wherein an input end of the speed reducer (653) is connected with a motor shaft of the third driving motor (652), an output end of the speed reducer is connected with the transmission mechanism (655), an output end of the transmission mechanism (655) is in transmission connection with the ball screw (656) to enable the ball screw (656) to rotate, the height-difference switching nut block (658) is sleeved on the ball screw (656), and the screw extrusion nozzle (63) or the support material printing nozzle (64) is fixedly connected with the height-difference switching nut block (658).
8. The dual spray wax pattern 3D printer of claim 7, wherein the transmission mechanism (655) comprises a mounting housing, and a drive wheel (6553), a first driven wheel (6552) and a second driven wheel (6551) positioned within the mounting housing, the drive wheel (6553) being connected to a motor shaft of the speed reducer (653), the first driven wheel (6552) being engaged with the drive wheel (6553), the second driven wheel (6551) being engaged with the first driven wheel (6552) and being secured to one end of the ball screw (656) to rotate the ball screw (656).
9. The dual-nozzle wax pattern 3D printer of any of claims 1-8, wherein the screw extrusion nozzle (63) comprises a screw barrel (633), a second drive motor (631), a screw (635), a nozzle (634), a thimble (636) and a nozzle heating block (637), the screw (635) is connected with the second drive motor (631) and rotates in the screw barrel (633) to extrude the liquid wax, the screw barrel (633) is communicated with the storage tank (5), the screw barrel (633), the nozzle heating block (637) and the nozzle (634) are sequentially connected, a support rod is further arranged at the bottom of the screw barrel (633), one end of the thimble (636) is fixed on the support rod, and the other end of the thimble is inserted into the bottom of the screw (635).
10. The dual spray wax pattern 3D printer of claim 9, wherein the screw (635) is provided with blades at the bottom periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328202.5A CN114226640B (en) | 2021-11-10 | 2021-11-10 | Double-nozzle wax pattern 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111328202.5A CN114226640B (en) | 2021-11-10 | 2021-11-10 | Double-nozzle wax pattern 3D printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114226640A CN114226640A (en) | 2022-03-25 |
| CN114226640B true CN114226640B (en) | 2023-05-23 |
Family
ID=80748971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111328202.5A Active CN114226640B (en) | 2021-11-10 | 2021-11-10 | Double-nozzle wax pattern 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114226640B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121845B (en) * | 2022-08-29 | 2022-12-02 | 成都航飞航空机械设备制造有限公司 | Double-sided machining device for aviation parts |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005097476A2 (en) * | 2004-04-02 | 2005-10-20 | Z Corporation | Methods and apparatus for 3d printing |
| CN204604935U (en) * | 2015-04-29 | 2015-09-02 | 河北工业大学 | A kind of 3D printer preparing FGM |
| CN105058794A (en) * | 2015-08-05 | 2015-11-18 | 天津大学 | Three-dimensional waxing, supply and extrusion integrated nozzle structure |
| CN106623786B (en) * | 2016-12-23 | 2018-09-14 | 浙江萌宠日记信息科技股份有限公司 | 3D printer and its Method of printing for jewelry production |
| CN106738863B (en) * | 2017-01-20 | 2019-03-08 | 陕西恒通智能机器有限公司 | A kind of screw feed formula 3D printing head |
| CN206733605U (en) * | 2017-05-08 | 2017-12-12 | 山东科技大学 | A kind of FDM types 3D printer melts consumptive material extrusion device |
| CN107336435A (en) * | 2017-08-25 | 2017-11-10 | 北京麦宝克斯科技有限公司 | A kind of 3D printer using thermoplastic macromolecule material |
| CN110405138A (en) * | 2019-07-02 | 2019-11-05 | 南京理工大学 | A kind of moltening mold castings wax-pattern 3D printer |
| CN110437972A (en) * | 2019-07-22 | 2019-11-12 | 华中科技大学 | A kind of more spray heads suitable for biological 3D printer are without interference switching device and method |
| CN110901052A (en) * | 2019-11-22 | 2020-03-24 | 陈祺睿 | 3D printing device |
| CN113210568B (en) * | 2021-04-25 | 2022-10-25 | 华南理工大学 | Mix double spray 3D printer of feeding |
-
2021
- 2021-11-10 CN CN202111328202.5A patent/CN114226640B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114226640A (en) | 2022-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114226640B (en) | Double-nozzle wax pattern 3D printer | |
| CN101428458B (en) | Injection molding method | |
| CN115195027B (en) | Ejection device and method for injection mold | |
| CN114260435A (en) | Automatic horizontal cold chamber alloy die casting machine of material loading | |
| CN112848142B (en) | Shearing mechanism of feeding rubber head of precise injection mold | |
| CN116461058B (en) | Ignition coil housing injection manufacturing mold | |
| CN116352051B (en) | Die-casting die and die-casting process | |
| CN115415500B (en) | But angle regulation's chain saw processing equipment of head of beating grass | |
| CN111452301A (en) | Double-color injection mold and injection method | |
| CN115972483A (en) | Rotary stripping injection mold | |
| CN110315712B (en) | Uniform injection device based on injection mold | |
| CN116000245A (en) | Casting equipment for producing motor cover | |
| CN202344750U (en) | All-electric miniature precise injection molding machine | |
| CN201552708U (en) | Pouring head of high-pressure polyurethane forming machine | |
| CN200995267Y (en) | Semi-solid magnesium slurry maker | |
| CN112026089A (en) | Injection molding machine capable of controlling material to enter and exit | |
| CN213006406U (en) | Quick injection mold of plastic goods | |
| CN221048959U (en) | Injection mold exhaust apparatus and injection mold | |
| CN220311686U (en) | Novel thin type cylinder cast steel mold | |
| CN109648058B (en) | Centrifugal casting machine capable of feeding uniformly | |
| CN218798999U (en) | Plate die-casting die easy to demould | |
| CN219338466U (en) | Plastic product feeding device | |
| CN217724113U (en) | Former is used in production of external medicine suppository | |
| CN210061864U (en) | Directional demoulding device for demoulding of injection moulding products | |
| CN212329604U (en) | But mould is used in metal product production of fast demoulding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |