A 3D printer quick disassembly and assembly nozzle device

Abstract

The present invention relates to the technical field of 3D printers, and discloses a 3D printer quick disassembly and assembly nozzle device, wherein a positioning groove for clamping a nozzle base mechanism is provided in the middle of a base plate seat, and a snap connection mechanism for clamping and fixing the nozzle base mechanism is provided at the upper end of the base plate seat; a nozzle assembly is fixed in the middle of the nozzle base mechanism, a throat assembly is connected to the top of the nozzle assembly, an upper end cover is clamped and fixed at the upper end of the nozzle base mechanism, a vertical auxiliary assembly is provided in the middle of the upper end of the upper end cover, and the throat assembly is fixed inside the vertical auxiliary assembly; the present invention can realize quick installation of the nozzle base mechanism; at the same time, the upper and lower ends of the vertical auxiliary assembly can be fixed synchronously, thereby effectively preventing the vertical auxiliary assembly and the throat assembly inside it from shaking, and ensuring stability and positioning accuracy; and quick disassembly of the nozzle base mechanism, the vertical auxiliary assembly and the throat assembly as a whole can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printers, in particular to a 3D printer quick disassembly and assembly nozzle device. Background Art

[0002] With the development of 3D printing technology, more and more application scenarios have put forward higher requirements for the maintenance and upgrade of 3D printers. Traditional 3D printer nozzles usually adopt a fixed design, fixed by welding or screws, which is not easy to disassemble. Replacing the nozzle requires special tools, which is complicated and time-consuming. Due to the inconvenience of disassembly and assembly, the maintenance cycle is long, which affects the printing efficiency. The nozzle of the 3D printer is connected by snap-on or magnetic suction. The connection stability is poor and the positioning accuracy is not high. The nozzle is easily displaced and falls off at high speed. For this reason, we have launched a 3D printer quick disassembly and assembly nozzle device. Summary of the invention

[0003] The purpose of the present invention is to provide a 3D printer quick disassembly and assembly nozzle device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a 3D printer quick disassembly and assembly nozzle device, comprising a shell and a bottom plate seat fixed at the bottom of the shell, a positioning groove for clamping the nozzle base mechanism is provided in the middle of the bottom plate seat, and a buckle connection mechanism for clamping and fixing the nozzle base mechanism is provided at the upper end of the bottom plate seat;

[0005] A nozzle assembly is fixed in the middle of the nozzle base mechanism, a throat assembly is connected to the top of the nozzle assembly, an upper end cover is clamped and fixed at the upper end of the nozzle base mechanism, a vertical auxiliary assembly is provided in the middle of the upper end of the upper end cover, and the throat assembly is fixed inside the vertical auxiliary assembly;

[0006] The vertical auxiliary assembly includes a truncated cone-shaped hollow seat fixed to the middle of the upper end of the upper end cover, a truncated cone-shaped hollow cylinder fixed to the upper end of the truncated cone-shaped hollow seat by a plurality of groups of connecting arms, and a cylinder fixed to the top of the truncated cone-shaped hollow cylinder;

[0007] The truncated cone-shaped hollow seat and the truncated cone-shaped hollow cylinder are both arranged in a shape of being narrow at the top and wide at the bottom, and the diameter of the upper end of the truncated cone-shaped hollow seat is consistent with the diameter of the lower end of the truncated cone-shaped hollow cylinder, and the diameter of the upper end of the truncated cone-shaped hollow cylinder is consistent with the diameter of the cylinder, and grooves are arranged at equal intervals on the upper side of the truncated cone-shaped hollow cylinder, and the top of the grooves extends to the upper end of the cylinder;

[0008] The upper end of the base plate seat is provided with a cylinder abutment mechanism located on both sides of the positioning groove, and a top positioning mechanism is installed on the top wall inside the shell;

[0009] After the nozzle base mechanism is fully inserted into the positioning groove, the two sets of clamping arms of the snap connection mechanism are clamped and fixed from the front and rear sides of the nozzle base mechanism. At the same time, the lower end of the cylinder abutment mechanism abuts against the top of the upper end of the nozzle base mechanism, and the truncated cone-shaped hollow seat is fixed to the middle of the lower end of the cylinder abutment mechanism. The cylinder abutment mechanism fixes the top of the vertical auxiliary component through the top positioning mechanism.

[0010] After pressing the button of the snap connection mechanism, the button pushes the two sets of clamping arms to open and release the nozzle base mechanism. At this time, the cylinder abuts against the lower end of the mechanism to push the nozzle base mechanism out of the positioning groove until the top of the vertical auxiliary component is separated from the top positioning mechanism.

[0011] Preferably, the nozzle base mechanism includes a heat-insulating base and a heating aluminum block inside the heat-insulating base, and the nozzle assembly includes an external threaded barrel screwed into the heating aluminum block, a connecting barrel provided at the top of the external threaded barrel, and a conical nozzle connected to the lower end of the external threaded barrel;

[0012] The external threaded cylinder is also threaded with a locking nut, which is tightly attached to the lower end of the heating aluminum block;

[0013] The top of the connecting tube passes through the upper end cover and then extends into the truncated cone-shaped hollow seat;

[0014] The throat assembly comprises a throat located at the upper end of the upper end cover and a capillary and a Teflon tube connected through the throat. The Teflon tube is sleeved on the outer side of the capillary, and the lower end of the capillary and the top of the connecting tube are butt-jointed in the throat.

[0015] Preferably, the upper end of the heat-insulating base is provided with a rectangular slot for snapping into the upper end cover, and the bottom side of the rectangular slot is provided with a supporting protrusion supported on the lower end of the upper end cover.

[0016] Preferably, a snap-in protrusion is provided on the side of the upper end cover, and a slope is provided on the lower end of the snap-in protrusion. After the upper end cover is pressed into the rectangular slot, the snap-in protrusion is snapped into the snap-in groove on the side wall of the rectangular slot, thereby completing the fixation of the upper end cover and the nozzle base mechanism.

[0017] Preferably, the buckle connection mechanism comprises a clamping block provided on the inner side of the left end of the clamping arm, a supporting arm provided on the inner side of the right end of the clamping arm, a vertical pin provided at the lower end of the connection between the clamping arm and the supporting arm, a hook seat provided at the upper end of the connection between the clamping arm and the supporting arm, and a tension spring connected between the front and rear sets of hook seats;

[0018] The vertical pins are inserted into corresponding pin holes on the base plate, so that the two sets of clamping arms are arranged symmetrically front and back;

[0019] A limit housing for slidingly connecting the button is provided in the center of the right upper end of the base plate seat, and the left end of the button abuts between the front and rear two groups of abutment arms;

[0020] An inclined groove is centrally arranged at the top of the front and rear ends of the heat insulation base, and connecting card slots located below the inclined groove are also arranged on the front and rear ends of the heat insulation base, and a slope is arranged on the inner side of the lower end of the card block.

[0021] Preferably, a slide groove is provided directly below the limit shell, a sliding protrusion is provided in the middle of the lower end of the button, and limit blocks are further provided on the front and rear side walls of the button, and the limit blocks are located on the left side of the limit shell.

[0022] Preferably, when the nozzle base mechanism is pushed upward into the positioning slot, the ramp slides along the inclined slot, causing the front and rear two sets of clamping arms to open. At this time, the tension spring is in a stretched state until the clamping block moves to the connecting slot. Under the action of the tension spring on the clamping arm's pulling force, the front and rear two sets of clamping arms are closed until the clamping block is inserted into the connecting slot, thereby realizing the two sets of clamping arms being clamped and fixed from the front and rear sides of the nozzle base mechanism.

[0023] Preferably, the cylinder abutment mechanism includes a bracket fixed at the front and rear upper ends of the positioning groove, a cylinder body installed on the top of the bracket, a piston sliding in the inner cavity of the cylinder body, a spring connected between the middle part of the upper end of the piston and the top wall of the inner cavity of the cylinder body, a piston rod fixed at the middle part of the lower end of the piston, an abutment plate fixed after the bottom of the piston rod passes through the cylinder body and the bracket, and abutment seats fixed on both sides of the lower end of the abutment plate.

[0024] Preferably, a through hole is provided in the middle of the abutment plate, and a speaker fixing tube for inserting into the truncated cone-shaped hollow seat is connected to the bottom of the through hole.

[0025] Preferably, the top positioning mechanism comprises a positioning ring seat fixed on the top wall inside the shell through a column, an annular airbag arranged in an annular groove on the inner wall of the positioning ring seat, and a plurality of groups of clamping plates arranged at equal intervals at the bottom of the inner wall of the positioning ring seat;

[0026] The top of the clamping plate extends upwardly out of a positioning ring seat;

[0027] The top side of the cylinder body is connected to an air pipe, and the other end of the air pipe passes through the positioning ring seat and is connected to the annular air bag;

[0028] The air in the inner cavity of the cylinder body enters the annular airbag through the air pipe, causing the annular airbag to expand, and the annular airbag squeezes the clamping plate, so that the bottom of the clamping plate is pressed into the corresponding groove.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. After the nozzle base mechanism is fully inserted into the positioning groove, the nozzle base mechanism can be automatically clamped and fixed from the front and rear sides of the nozzle base mechanism through two sets of clamping arms of the buckle connection mechanism, so that the nozzle base mechanism can be quickly installed;

[0031] 2. The lower end of the cylinder abutting mechanism abuts against the upper top of the nozzle base mechanism, and the truncated cone-shaped hollow seat is fixed in the middle of the lower end of the cylinder abutting mechanism. The cylinder abutting mechanism fixes the top of the vertical auxiliary component through the top positioning mechanism, so that the upper and lower ends of the vertical auxiliary component can be fixed synchronously, thereby effectively preventing the vertical auxiliary component and the throat component inside it from shaking, ensuring stability and positioning accuracy;

[0032] 3. After pressing the button of the snap connection mechanism, the button pushes the two sets of clamping arms to open and release the nozzle base mechanism. At this time, the cylinder pushes the nozzle base mechanism out of the positioning groove against the lower end of the mechanism until the top of the vertical auxiliary assembly is separated from the top positioning mechanism. This allows the nozzle base mechanism, vertical auxiliary assembly and throat assembly to be quickly disassembled as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the exploded structure of the overall assembly of the present invention;

[0034] Figure 2 It is a three-dimensional structural schematic diagram of the nozzle assembly of the present invention;

[0035] Figure 3 It is a three-dimensional structural schematic diagram of the nozzle base mechanism of the present invention;

[0036] Figure 4 A schematic diagram of a three-dimensional structure of the connection between the upper end cover and the vertical auxiliary assembly of the present invention;

[0037] Figure 5 It is a schematic diagram of the three-dimensional structure of the connection between the bottom plate seat, the cylinder abutment mechanism and the top positioning mechanism of the present invention;

[0038] Figure 6 For the present invention Figure 5 The schematic diagram of the cross-sectional structure at A in the middle;

[0039] Figure 7 It is a schematic diagram of the three-dimensional structure of the top positioning mechanism of the present invention;

[0040] Figure 8 It is a schematic diagram of the exploded structure of the buckle connection mechanism of the present invention;

[0041] Fig. 9 It is a schematic diagram of the three-dimensional structure after the buckle connection mechanism of the present invention is assembled with the bottom plate seat;

[0042] Fig.10 For the present invention Fig. 9 A schematic diagram of a top view structure;

[0043] Fig.11 It is a schematic diagram of the three-dimensional structure of the nozzle base mechanism of the present invention being fixed by a snap connection mechanism;

[0044] Fig.12 It is a schematic cross-sectional view of the structure of the present invention after overall assembly;

[0045] Fig.13 For the present invention Fig.12 The enlarged structural diagram at B in the middle;

[0046] Fig.14 This is a schematic diagram of the three-dimensional structure of the housing of the present invention after being disassembled;

[0047] Fig.15 It is a schematic diagram of the three-dimensional structure after the overall assembly of the present invention.

[0048] In the figure: 1. nozzle assembly; 101. conical nozzle; 102. locking nut; 103. external threaded cylinder; 104. connecting cylinder; 2. nozzle base mechanism; 201. heat insulation base; 202. connecting slot; 203. inclined slot; 204. supporting protrusion; 205. connecting slot; 206. rectangular slot; 207. heating aluminum block; 3. upper end cover; 301. inclined surface; 302. connecting protrusion; 4. vertical auxiliary assembly; 401. truncated cone-shaped hollow seat; 402. connecting arm; 403. truncated cone-shaped hollow cylinder; 404. cylinder; 405. groove; 5. throat; 6. bottom plate seat; 601. pin hole; 602. positioning slot; 603. slide slot; 604. limit shell; 7. buckle connection mechanism; 701. clamping arm; 702. vertical pin; 70 3. Abutment arm; 704. Block; 705. Slope; 706. Hook seat; 707. Tension spring; 708. Button; 709. Limit block; 710. Sliding protrusion; 8. Cylinder abutment mechanism; 801. Bracket; 802. Sliding block; 803. Vertical groove; 804. Abutment plate; 805. Cylinder body; 806. Piston rod; 807. Through hole; 808. Speaker fixing tube; 809. Piston; 810. Spring; 811. Abutment seat; 9. Top positioning mechanism; 901. Positioning ring seat; 902. Column; 903. Annular airbag; 904. Clamping plate; 905. Annular groove; 10. Air pipe; 11. Shell; 1101. Notch; 1102. Extension hole; 1103. Cooling fan; 12. Capillary; 13. Teflon tube. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example:

[0051] See also Figure 1-15, the present invention provides a technical solution:

[0052] A 3D printer quick disassembly and assembly nozzle device, comprising a shell 11 and a base plate seat 6 fixed at the bottom of the shell 11, a cooling fan 1103 is installed on the side of the shell 11, and a cooling grille opposite to the cooling fan 1103 is also provided on the side of the shell 11. The cooling fan 1103 is used to prevent the throat 5 in the shell 11 from being blocked due to overheating and expansion of the internal material of the throat 5;

[0053] A notch 1101 is provided at the bottom of the right end of the housing 11, and the limiting shell 604 is stuck in the notch 1101;

[0054] The top of the housing 11 is provided with an extension hole 1102, and the top of the vertical auxiliary component 4 extends through the extension hole 1102;

[0055] A positioning groove 602 for clamping the nozzle base mechanism 2 is provided in the middle of the bottom plate seat 6, and a buckle connection mechanism 7 for clamping and fixing the nozzle base mechanism 2 is provided at the upper end of the bottom plate seat 6;

[0056] like Figure 8-11 As shown in Figures 14, the buckle connection mechanism 7 includes a clamping block 704 provided on the inner side of the left end of the clamping arm 701, a supporting arm 703 provided on the inner side of the right end of the clamping arm 701, a vertical pin 702 provided at the lower end of the connection between the clamping arm 701 and the supporting arm 703, a hook seat 706 provided at the upper end of the connection between the clamping arm 701 and the supporting arm 703, and a tension spring 707 connected between the front and rear sets of hook seats 706;

[0057] The vertical pins 702 are inserted into the corresponding pin holes 601 on the bottom plate seat 6, so that the two sets of clamping arms 701 are arranged symmetrically front and back;

[0058] A limit housing 604 for slidingly connecting the button 708 is provided at the center of the right upper end of the bottom plate seat 6, and the left end of the button 708 abuts between the front and rear sets of abutment arms 703;

[0059] A slope 705 is provided on the inner side of the lower end of the block 704 .

[0060] like Figure 3 As shown, an inclined groove 203 is centrally disposed at the top of the front and rear ends of the heat insulating base 201, and a connecting card slot 202 located below the inclined groove 203 is also disposed on the front and rear ends of the heat insulating base 201;

[0061] A slide groove 603 is provided directly below the limiting shell 604 , a sliding protrusion 710 is provided at the middle of the lower end of the button 708 , and limiting blocks 709 are further provided on the front and rear side walls of the button 708 , and the limiting block 709 is located on the left side of the limiting shell 604 .

[0062] When the nozzle base mechanism 2 is pushed upward into the positioning groove 602, the ramp 705 slides along the inclined groove 203, so that the front and rear clamping arms 701 are opened. At this time, the tension spring 707 is in a stretched state until the clamping block 704 moves to the connecting clamping groove 202. Under the pulling force of the tension spring 707 on the clamping arm 701, the front and rear clamping arms 701 are closed until the clamping block 704 is inserted into the connecting clamping groove 202, so that the two sets of clamping arms 701 are clamped and fixed from the front and rear sides of the nozzle base mechanism 2.

[0063] A nozzle assembly 1 is fixed in the middle of the nozzle base mechanism 2, and a throat assembly is connected to the top of the nozzle assembly 1;

[0064] The nozzle base mechanism 2 includes a heat-insulating base 201 and a heating aluminum block 207 disposed inside the heat-insulating base 201 . The heating aluminum block 207 is embedded with a heating rod and a thermistor.

[0065] like Figure 1 and 12 As shown, the nozzle assembly 1 includes an external threaded barrel 103 screwed into the heating aluminum block 207, a connecting barrel 104 provided on the top of the external threaded barrel 103, and a conical nozzle 101 connected to the lower end of the external threaded barrel 103;

[0066] The external threaded barrel 103 is also threaded with a locking nut 102, which is tightly attached to the lower end of the heating aluminum block 207;

[0067] The top of the connecting tube 104 passes through the upper end cover 3 and then extends into the truncated cone-shaped hollow seat 401;

[0068] like Fig.12 As shown, the throat assembly includes a throat 5 located on the upper end of the upper end cover 3 and a capillary 12 and a Teflon tube 13 connected through the throat 5. The Teflon tube 13 is sleeved on the outside of the capillary 12, and the lower end of the capillary 12 and the top of the connecting tube 104 are connected to the throat 5.

[0069] The upper end of the nozzle base mechanism 2 is clamped and fixed with the upper end cover 3, and the upper end of the insulation base 201 is provided with a rectangular slot 206 for clamping the upper end cover 3, and the bottom side of the rectangular slot 206 is provided with a supporting protrusion 204 supported on the lower end of the upper end cover 3.

[0070] A snap-fit ​​protrusion 302 is provided on the side of the upper end cover 3, and a slope 301 is provided on the lower end of the snap-fit ​​protrusion 302. After the upper end cover 3 is pressed into the rectangular slot 206, the snap-fit ​​protrusion 302 is snapped into the snap-fit ​​groove 205 on the side wall of the rectangular slot 206, thereby completing the fixation of the upper end cover 3 and the nozzle base mechanism 2.

[0071] A vertical auxiliary component 4 is provided in the middle of the upper end of the upper end cover 3, and the throat component is fixed inside the vertical auxiliary component 4;

[0072] like Figure 4 As shown, the vertical auxiliary assembly 4 includes a truncated cone-shaped hollow seat 401 fixed to the middle of the upper end of the upper end cover 3, a truncated cone-shaped hollow cylinder 403 fixed to the upper end of the truncated cone-shaped hollow seat 401 through a plurality of groups of connecting arms 402, and a cylinder 404 fixed to the top of the truncated cone-shaped hollow cylinder 403;

[0073] The truncated cone-shaped hollow seat 401 and the truncated cone-shaped hollow cylinder 403 are both narrow at the top and wide at the bottom, and the diameter of the upper end of the truncated cone-shaped hollow seat 401 is consistent with the diameter of the lower end of the truncated cone-shaped hollow cylinder 403, and the diameter of the upper end of the truncated cone-shaped hollow cylinder 403 is consistent with the diameter of the cylinder 404. Grooves 405 are evenly spaced on the upper side of the truncated cone-shaped hollow cylinder 403, and the top of the groove 405 extends to the upper end of the cylinder 404;

[0074] With such a configuration, when the air in the annular airbag 903 is not completely sucked into the inner cavity of the cylinder body 805 through the air pipe 10, and the annular airbag 903 is still squeezing the clamping plate 904, and the clamping plate 904 is not completely reset and no longer in contact with the top of the vertical auxiliary component 4, the vertical auxiliary component 4 can still be pulled out and disassembled along with the nozzle base mechanism 2;

[0075] That is, when the nozzle base mechanism 2 is pulled out downward for disassembly, the vertical auxiliary component 4 also moves downward. At this time, the upper end of the clamping plate 904 moves out along the top of the groove 405, thereby completing the separation of the top of the vertical auxiliary component 4 from the top positioning mechanism 9.

[0076] The upper end of the base plate seat 6 is provided with a cylinder abutment mechanism 8 located on both sides of the positioning groove 602;

[0077] like Figure 5 , 6 As shown in Figures 12 and 12, the cylinder abutment mechanism 8 includes a bracket 801 fixed at the front and rear upper ends of the positioning groove 602, a cylinder body 805 installed on the top of the bracket 801, a piston 809 sliding in the inner cavity of the cylinder body 805, a spring 810 connected between the middle part of the upper end of the piston 809 and the top wall of the inner cavity of the cylinder body 805, a piston rod 806 fixed at the middle part of the lower end of the piston 809, an abutment plate 804 fixed after the bottom of the piston rod 806 passes through the cylinder body 805 and the bracket 801, and an abutment seat 811 fixed on both sides of the lower end of the abutment plate 804.

[0078] Sliding blocks 802 are provided at both ends of the abutting plate 804, and the sliding blocks 802 are slidably connected to the vertical grooves 803 on the side walls of the bracket 801. When the abutting plate 804 moves up and down, such a setting enables the abutting plate 804 to move up and down smoothly;

[0079] A through hole 807 is provided in the middle of the abutting plate 804 , and a speaker fixing tube 808 for inserting into the truncated cone-shaped hollow seat 401 is connected to the bottom of the through hole 807 .

[0080] A top positioning mechanism 9 is installed on the inner top wall of the housing 11;

[0081] like Figure 5 , 7 As shown in FIG. 13 , the top positioning mechanism 9 includes a positioning ring seat 901 fixed to the inner top wall of the housing 11 by a column 902, an annular air bag 903 arranged in an annular groove 905 on the inner wall of the positioning ring seat 901, and a plurality of groups of clamping plates 904 arranged at equal intervals at the bottom of the inner wall of the positioning ring seat 901;

[0082] The top of the clamping plate 904 extends upwardly from the positioning ring seat 901;

[0083] The top side of the cylinder body 805 is connected with an air pipe 10, and the other end of the air pipe 10 passes through the positioning ring seat 901 and communicates with the annular air bag 903. The air pipe 10 is fixed on the inner wall of the shell 11.

[0084] The air in the inner cavity of the cylinder body 805 enters the annular airbag 903 through the air pipe 10 , causing the annular airbag 903 to expand. The annular airbag 903 squeezes the clamping plate 904 , causing the bottom of the clamping plate 904 to be pressed into the corresponding groove 405 .

[0085] After the nozzle base mechanism 2 is fully inserted into the positioning groove 602, the two sets of clamping arms 701 of the snap connection mechanism 7 are clamped and fixed from the front and rear sides of the nozzle base mechanism 2. At the same time, the lower end of the cylinder abutment mechanism 8 abuts against the top of the upper end of the nozzle base mechanism 2, and the truncated cone-shaped hollow seat 401 is fixed to the middle of the lower end of the cylinder abutment mechanism 8. The cylinder abutment mechanism 8 fixes the top of the vertical auxiliary component 4 through the top positioning mechanism 9;

[0086] After pressing the button 708 of the snap connection mechanism 7, the button 708 pushes the two sets of clamping arms 701 to open and release the nozzle base mechanism 2. At this time, the cylinder abuts against the lower end of the mechanism 8 to push the nozzle base mechanism 2 out of the positioning groove 602 until the top of the vertical auxiliary component 4 is separated from the top positioning mechanism 9.

[0087] Specifically, when in use, the external threaded barrel 103 is screwed into the heating aluminum block 207, the locking nut 102 is tightly attached to the lower end of the heating aluminum block 207, and the bottom of the conical nozzle 101 is extended out of the bottom of the insulation base 201;

[0088] Then, the upper end cover 3 is pressed into the rectangular slot 206, so that the snap-in protrusion 302 is snapped into the snap-in groove 205 on the side wall of the rectangular slot 206, and the lower end of the upper end cover 3 is supported on the supporting protrusion 204, thus completing the fixation of the upper end cover 3 and the nozzle base mechanism 2;

[0089] The Teflon tube 13 is sleeved on the outside of the capillary tube 12, the lower end of the capillary tube 12 and the top of the connecting tube 104 are connected to the throat 5, and the top of the capillary tube 12 is inserted into the cylinder 404;

[0090] When the heat insulation base 201 is pushed upward into the positioning groove 602, the ramp 705 slides along the inclined groove 203, and the clamping arm 701 rotates with the vertical pin 702 as the center, so that the front and rear clamping arms 701 are opened. At this time, the tension spring 707 is in a stretched state until the clamping block 704 moves to the connecting clamping groove 202. Under the pulling force of the tension spring 707 on the clamping arm 701, the front and rear clamping arms 701 are closed until the clamping block 704 is inserted into the connecting clamping groove 202, so that the two sets of clamping arms 701 are clamped and fixed from the front and rear sides of the nozzle base mechanism 2;

[0091] After the heat-insulating base 201 is pushed upward into the positioning groove 602, the upper end of the heat-insulating base 201 first contacts the lower end of the abutting seat 811, and the upper end of the upper end cover 3 contacts the lower end of the speaker fixing tube 808 at the same time, and the truncated cone-shaped hollow seat 401 is inserted into the speaker fixing tube 808, so that the abutting plate 804 moves upward, and the top of the vertical auxiliary component 4 extends out from the inside of the top positioning mechanism 9;

[0092] The abutment plate 804 drives the piston 809 to move upward in the inner cavity of the cylinder body 805 through the piston rod 806 (at this time, the spring 810 is in a compressed state), so that the piston 809 allows the air in the inner cavity of the cylinder body 805 to enter the annular airbag 903 through the air pipe 10, so that the annular airbag 903 expands, and the annular airbag 903 squeezes the clamping plate 904, so that the bottom of the clamping plate 904 is pressed into the corresponding groove 405;

[0093] When the nozzle base mechanism 2, the vertical auxiliary assembly 4 and the throat assembly need to be disassembled as a whole, it is only necessary to press the button 708 so that the left end of the button 708 is pushed to the left from between the front and rear abutment arms 703, so that the abutment arms 703 rotate with the vertical pin 702 as the center of the circle, so that the front and rear clamping arms 701 are opened, and the clamping block 704 is disengaged from the connecting slot 202;

[0094] At this time, under the elastic force of the spring 810 on the piston 809, the piston 809 moves downward in the inner cavity of the cylinder body 805, so that the piston 809 drives the abutment plate 804 to move downward through the piston rod 806, so that the abutment plate 804 pushes the nozzle base mechanism 2 downward until the bottom of the nozzle base mechanism 2 is pushed out from the positioning groove 602 of the base plate seat 6, and at the same time, the top of the vertical auxiliary component 4 is separated from the inside of the top positioning mechanism 9, and then the nozzle base mechanism 2 is pulled out downward, completing the disassembly of the nozzle base mechanism 2, the vertical auxiliary component 4 and the throat assembly as a whole;

[0095] While the abutment plate 804 pushes the nozzle base mechanism 2 downward until the bottom of the nozzle base mechanism 2 is pushed out of the positioning groove 602 of the base plate seat 6, the piston 809 moves downward in the inner cavity of the cylinder body 805, and the air in the annular airbag 903 is sucked into the inner cavity of the cylinder body 805 through the air pipe 10, so that the annular airbag 903 no longer squeezes the clamping plate 904, and the clamping plate 904 is reset and no longer contacts the top of the vertical auxiliary component 4, which is conducive to the vertical auxiliary component 4 being pulled out and disassembled downward along with the nozzle base mechanism 2.

[0096] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printer quick disassembly and assembly nozzle device, comprising a housing (11) and a base plate (6) fixed at the bottom of the housing (11), characterized in that: A positioning groove (602) for snapping into the nozzle base mechanism (2) is provided in the middle of the base plate seat (6), and a buckle connection mechanism (7) for snapping and fixing the nozzle base mechanism (2) is provided at the upper end of the base plate seat (6); A nozzle assembly (1) is fixed in the middle of the nozzle base mechanism (2), a throat assembly is connected to the top of the nozzle assembly (1), an upper end cover (3) is fixed to the upper end of the nozzle base mechanism (2), a vertical auxiliary assembly (4) is provided in the middle of the upper end of the upper end cover (3), and the throat assembly is fixed inside the vertical auxiliary assembly (4); The vertical auxiliary assembly (4) comprises a truncated cone-shaped hollow seat (401) fixed to the middle of the upper end of the upper end cover (3), a truncated cone-shaped hollow cylinder (403) fixed to the upper end of the truncated cone-shaped hollow seat (401) via a plurality of groups of connecting arms (402), and a cylinder (404) fixed to the top of the truncated cone-shaped hollow cylinder (403); The truncated cone-shaped hollow seat (401) and the truncated cone-shaped hollow cylinder (403) are both arranged in a shape of being narrow at the top and wide at the bottom, and the diameter of the upper end of the truncated cone-shaped hollow seat (401) is consistent with the diameter of the lower end of the truncated cone-shaped hollow cylinder (403), and the diameter of the upper end of the truncated cone-shaped hollow cylinder (403) is consistent with the diameter of the cylinder (404), and grooves (405) are evenly spaced on the upper side of the truncated cone-shaped hollow cylinder (403), and the top of the grooves (405) extends to the upper end of the cylinder (404); The upper end of the base plate seat (6) is provided with a cylinder abutment mechanism (8) located on both sides of the positioning groove (602), and a top positioning mechanism (9) is installed on the top wall inside the shell (11); After the nozzle base mechanism (2) is completely inserted into the positioning groove (602), the two sets of clamping arms (701) of the snap connection mechanism (7) are clamped and fixed from the front and rear sides of the nozzle base mechanism (2). At the same time, the lower end of the cylinder abutment mechanism (8) abuts against the top of the upper end of the nozzle base mechanism (2), and the truncated cone-shaped hollow seat (401) is fixed to the middle of the lower end of the cylinder abutment mechanism (8). The cylinder abutment mechanism (8) fixes the top of the vertical auxiliary component (4) through the top positioning mechanism (9); After pressing the button (708) of the snap connection mechanism (7), the button (708) pushes the two sets of clamping arms (701) to open and release the nozzle base mechanism (2). At this time, the lower end of the cylinder abuts against the mechanism (8) to push the nozzle base mechanism (2) out of the positioning groove (602) until the top of the vertical auxiliary component (4) is separated from the top positioning mechanism (9); The cylinder abutment mechanism (8) comprises a bracket (801) fixed to the front and rear upper ends of the positioning groove (602), a cylinder body (805) mounted on the top of the bracket (801), a piston (809) slidingly connected in the inner cavity of the cylinder body (805), a spring (810) connected between the middle of the upper end of the piston (809) and the top wall of the inner cavity of the cylinder body (805), a piston rod (806) fixed to the middle of the lower end of the piston (809), an abutment plate (804) fixed after the bottom of the piston rod (806) passes through the cylinder body (805) and the bracket (801), and abutment seats (811) fixed on both sides of the lower end of the abutment plate (804); A through hole (807) is provided in the middle of the abutting plate (804), and a speaker fixing tube (808) for inserting into the truncated cone-shaped hollow seat (401) is connected to the bottom of the through hole (807); The top positioning mechanism (9) comprises a positioning ring seat (901) fixed to the top wall inside the housing (11) via a column (902), an annular air bag (903) arranged in an annular groove (905) on the inner wall of the positioning ring seat (901), and a plurality of groups of clamping plates (904) arranged at equal intervals at the bottom of the inner wall of the positioning ring seat (901); The top of the clamping plate (904) extends upward from the positioning ring seat (901); The top side of the cylinder body (805) is connected to an air pipe (10), and the other end of the air pipe (10) passes through the positioning ring seat (901) and is connected to the annular air bag (903); The air in the inner cavity of the cylinder body (805) enters the annular airbag (903) through the air pipe (10), causing the annular airbag (903) to expand, and the annular airbag (903) squeezes the clamping plate (904), so that the bottom of the clamping plate (904) is pressed into the corresponding groove (405).

2. A 3D printer quick disassembly and assembly nozzle device according to claim 1, characterized in that: The nozzle base mechanism (2) comprises a heat-insulating base (201) and a heating aluminum block (207) disposed inside the heat-insulating base (201); the nozzle assembly (1) comprises an externally threaded barrel (103) screwed into the heating aluminum block (207), a connecting barrel (104) disposed at the top of the externally threaded barrel (103), and a conical nozzle (101) connected to the lower end of the externally threaded barrel (103); The externally threaded cylinder (103) is also threaded with a locking nut (102), and the locking nut (102) is tightly attached to the lower end of the heating aluminum block (207); The top of the connecting tube (104) passes through the upper end cover (3) and then extends into the truncated cone-shaped hollow seat (401); The throat assembly comprises a throat (5) located at the upper end of the upper end cover (3) and a capillary (12) and a Teflon tube (13) connected through the throat (5); the Teflon tube (13) is sleeved on the outside of the capillary (12); the lower end of the capillary (12) and the top of the connecting tube (104) are butt-jointed in the throat (5).

3. A 3D printer quick disassembly and assembly nozzle device according to claim 2, characterized in that: The upper end of the heat-insulating base (201) is provided with a rectangular slot (206) for inserting the upper end cover (3), and the bottom side of the rectangular slot (206) is provided with a supporting protrusion (204) supported on the lower end of the upper end cover (3).

4. A 3D printer quick disassembly and assembly nozzle device according to claim 3, characterized in that: The upper end cover (3) is provided with a snap-fit ​​protrusion (302) on the side, and a slope (301) is provided at the lower end of the snap-fit ​​protrusion (302). After the upper end cover (3) is pressed into the rectangular snap-fit ​​groove (206), the snap-fit ​​protrusion (302) is snapped into the snap-fit ​​groove (205) on the side wall of the rectangular snap-fit ​​groove (206), thereby completing the fixing of the upper end cover (3) and the nozzle base mechanism (2).

5. A 3D printer quick disassembly and assembly nozzle device according to claim 2, characterized in that: The buckle connection mechanism (7) comprises a clamping block (704) provided on the inner side of the left end of the clamping arm (701), a supporting arm (703) provided on the inner side of the right end of the clamping arm (701), a vertical pin (702) provided at the lower end of the connection between the clamping arm (701) and the supporting arm (703), a hook seat (706) provided at the upper end of the connection between the clamping arm (701) and the supporting arm (703), and a tension spring (707) connecting the front and rear groups of hook seats (706); The vertical pins (702) are inserted into corresponding pin holes (601) on the base plate seat (6), so that the two sets of clamping arms (701) are arranged symmetrically in front and back; A limiting shell (604) for slidingly connecting the button (708) is provided at the center of the right upper end of the base plate seat (6), and the left end of the button (708) abuts between the front and rear two groups of abutment arms (703); An inclined groove (203) is centrally provided at the top of the front and rear ends of the heat insulation base (201), and a connecting card slot (202) located below the inclined groove (203) is also provided on the front and rear ends of the heat insulation base (201), and a slope (705) is provided on the inner side of the lower end of the card block (704).

6. A 3D printer quick disassembly and assembly nozzle device according to claim 5, characterized in that: A slide groove (603) is provided directly below the limiting shell (604), a sliding protrusion (710) is provided at the middle of the lower end of the button (708), and a limiting block (709) is also provided on the front and rear side walls of the button (708), and the limiting block (709) is located on the left side of the limiting shell (604).

7. A 3D printer quick disassembly and assembly nozzle device according to claim 5, characterized in that: When the nozzle base mechanism (2) is pushed upward into the positioning groove (602), the slope (705) slides along the inclined groove (203), so that the front and rear clamping arms (701) are opened. At this time, the tension spring (707) is in a stretched state until the clamping block (704) moves to the connecting clamping groove (202). Under the pulling force of the tension spring (707) on the clamping arms (701), the front and rear clamping arms (701) are closed until the clamping block (704) is inserted into the connecting clamping groove (202), so that the two sets of clamping arms (701) are clamped and fixed from the front and rear sides of the nozzle base mechanism (2).

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