Spray head device of carpet 3D printer

Abstract

The invention discloses a spray head device of a carpet 3D printer, and belongs to the technical field of 3D printing, the spray head device comprises a supporting frame, a driving frame is mounted on the supporting frame, a spray head body is mounted on the driving frame, the spray head body comprises a shell, a heating plate is fixedly mounted in the shell, a spray nozzle is fixedly mounted on the bottom wall of the heating plate, and the spray nozzle is fixedly mounted on the bottom wall of the heating plate. And a carrier is fixedly mounted on the support frame. According to the scheme, through cooperation of a cleaning rod and a cleaning pad, after a driving frame is powered off, a magnetic field of an electromagnet disappears at the moment, then a first spring contracts and drives a linkage rod and the cleaning rod to move downwards through a connecting rod, and the cleaning rod can drive the expanded cleaning pad to move downwards in the downward moving process; it needs to be specially explained that the diameter of the cleaning rod is smaller than that of the nozzle, and then the expanded cleaning pad can extrude waste remaining in the nozzle out of the gap between the cleaning rod and the nozzle, so that the nozzle is effectively prevented from being blocked or scratched, and the effect of improving the working efficiency of 3D printing is achieved.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and more specifically, to a printhead assembly for a carpet 3D printer. Background Technology

[0002] As people's living standards improve, more and more people are paying attention to a high-quality lifestyle, and they are starting to choose different carpets to decorate their rooms. Then, with the development of technology, people began to use 3D printing technology to print carpets. 3D printing technology is a manufacturing technology based on computer three-dimensional models, which is a method of building objects by stacking materials layer by layer; it is an additive manufacturing technology, and compared with traditional manufacturing technology, 3D printing technology has greater flexibility and creativity.

[0003] 3D printers typically guide filament into a heating element via an extruder, heat it until it melts, and then extrude it through a nozzle for printing. Because the nozzle has a tapered shape, some material remains in the nozzle after each print, leading to blockages over time. Currently, cleaning the nozzle requires disassembling it and using a thin rod or other cleaning equipment to clear blockages, which can affect the printer's operating efficiency.

[0004] To address the aforementioned issues, some solutions have been proposed in the prior art. For example, Chinese invention application CN119458906A discloses a 3D printer and its reset device. This device incorporates a cleaning mechanism. An agitating component within this mechanism extends into the nozzle to agitate the material. Simultaneously, a scraper within the agitating component opens, allowing it to scrape against the conical inner wall of the nozzle. Finally, the cleaning component absorbs the agitated filament or impurities, improving the cleaning effect and efficiency of the filament or impurities inside the nozzle. Furthermore, the nozzle does not need to be disassembled during use, simplifying the nozzle cleaning process and ensuring the normal operating efficiency of the 3D printer. While existing technologies can improve the efficiency of 3D printers to some extent, they only clean the nozzle area and cannot clean residual filament in the channel above the nozzle. Additionally, if the filament at the nozzle is not completely cooled and remains sticky, it cannot be completely sucked out. When the filament at the nozzle is completely cooled, cleaning the solidified filament with a scraper can easily scratch the nozzle, severely impacting the 3D printer's efficiency. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a printhead device for a carpet 3D printer, which can improve the working efficiency of the printer.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A carpet 3D printer printhead assembly includes a support frame, a drive frame mounted on the support frame, a printhead body mounted on the drive frame, the printhead body including a housing, a heating plate fixedly mounted inside the housing, a nozzle fixedly mounted on the bottom wall of the heating plate, a carrier frame fixedly mounted on the support frame, and a discharge assembly that cooperates with the nozzle on the support frame.

[0008] The discharge assembly includes a collection block detachably mounted on a support frame. A cleaning rod is vertically slidably mounted on the top wall of the collection block. A connecting rod is fixedly mounted on the side wall of the cleaning rod. A linkage rod, fixedly connected to the connecting rod, is vertically slidably mounted on the top wall of the collection block. A first spring is installed between the connecting rod and the collection block. A magnet is fixedly mounted on the top end of the linkage rod. An electromagnet that attracts the magnet is provided on the housing and is electrically connected to the drive frame. A cleaning pad is fixedly mounted on the cleaning rod. An air supply assembly for supplying air to the cleaning pad is provided on the housing.

[0009] Furthermore, a throat pipe is fixedly installed on the top wall of the heating plate, and a radiator is fixedly installed on the throat pipe. A cooling fan that cooperates with the throat pipe is fixedly installed on the housing. A sliding groove is symmetrically opened on the housing. A slider is slidably installed in the sliding groove. A blocking plate for blocking the cooling fan is fixedly installed on the slider. A drive component that cooperates with the slider is provided on the housing.

[0010] Furthermore, the drive assembly includes a heat-conducting block fixedly mounted on the side wall of the housing, a shape memory alloy wire is installed between the top wall of the heat-conducting block and the slider, and a heat-conducting rod that fits against the throat is fixedly mounted on the heat-conducting block. An mounting block is fixedly mounted on the housing, and an elastic pad is installed between the mounting block and the slider.

[0011] Furthermore, the air supply assembly includes a cavity formed in the elastic pad, a first air pipe inserted into the cavity, a hollow rod that slides with the linkage rod fixedly installed on the housing, and an electromagnet fixedly installed at the top of the hollow rod. The end of the first air pipe away from the cavity is connected to the hollow rod. The linkage rod is provided with a connecting component, and a cavity is formed in the cleaning pad. The first air pipe is connected to the cavity through the connecting component. An air inlet valve with an input end connected to the outside is inserted into the cavity.

[0012] Furthermore, the connecting component includes an air groove formed on the linkage rod, the air groove having a through hole, a second air pipe fixedly installed on the linkage rod communicating with the through hole, and the second air pipe communicating with the cavity, a blocking block for blocking the first air pipe being vertically slidably installed inside the hollow rod, and a second spring being installed between the blocking block and the hollow rod.

[0013] Furthermore, an installation ring is rotatably mounted on the collecting block, a scraper is fixedly mounted on the top wall of the installation ring, a spring is installed between the installation ring and the collecting block, and a connecting rope that is fixedly connected to the connecting rod is wound around the installation ring.

[0014] Furthermore, the sidewall of the scraper is inclined.

[0015] Furthermore, a guide rod that engages with a connecting rope is rotatably mounted on the collection block.

[0016] Furthermore, a baffle for sealing the chute is fixedly installed on the top wall of the sealing plate.

[0017] Furthermore, bristles are uniformly fixedly installed on the side wall of the sealing plate, and combing rods with bristles are uniformly fixedly installed on the side wall of the housing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (1) This solution uses the cooperation of the cleaning rod and the cleaning pad. After the drive frame is powered off, the electromagnetic field of the electromagnet disappears. Then the first spring contracts and drives the linkage rod and the cleaning rod to move downward through the connecting rod. During the downward movement of the cleaning rod, the expanded cleaning pad will move downward. It should be noted that the diameter of the cleaning rod is smaller than the diameter of the nozzle. Then the expanded cleaning pad can squeeze out the waste material remaining in the nozzle through the gap between the cleaning rod and the nozzle, thereby effectively avoiding nozzle blockage or scratching of the nozzle, and improving the efficiency of 3D printing.

[0020] (2) This solution sets up a sealing plate. When the elastic pad moves the sealing plate upward, it can supply air to the cleaning pad. After printing, the temperature of the throat tube gradually decreases. At this time, the temperature of the heat conduction block gradually decreases. Then the shape memory alloy wire assembly contracts and moves the slider downward. At this time, the elastic pad is stretched. During the downward movement of the slider, the sealing plate is driven to seal the cooling fan again, thereby effectively preventing external dust from adhering to the surface of the cooling fan and affecting the heat dissipation effect of the throat tube. At the same time, by controlling the movement of the sealing plate through the shape memory alloy wire, the cooling fan can be sealed during the preheating process of the throat tube, thereby improving the preheating effect of the throat tube and further improving the working efficiency of the 3D printer.

[0021] (3) This solution uses the cooperation of the mounting ring and the scraper rod. When the connecting rod moves downward, it will pull the connecting rope downward. At this time, the connecting rope pulls the mounting ring to rotate. The spring starts to store power. Then, when the mounting ring rotates, it drives the scraper rod to rotate. During the rotation of the scraper rod, the residual material on the cleaning rod can be cleaned. When the cleaning pad passes by the scraper rod, the rotating scraper rod can clean the material adhering to the cleaning pad. This avoids the residual material on the cleaning rod and the scraper rod surface from hardening and causing the nozzle to be scratched, thus further improving the working efficiency of the 3D printer. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 This is a combined diagram of the collecting block, linkage rod, cleaning rod, and connecting rod of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged view at point B in the middle;

[0026] Figure 5 This is a diagram showing the assembly of the cleaning rod, cleaning pad, and second air tube of the present invention.

[0027] Figure 6 This is a combined diagram of the nozzle, hollow rod, and sealing block of the present invention;

[0028] Figure 7 This is a diagram showing the combination of the sealing plate, elastic pad, shape memory alloy wire, and first air tube of the present invention.

[0029] Figure 8 This is a diagram showing the combination of the sealing plate and the brush of the present invention.

[0030] Explanation of the labels in the diagram:

[0031] 1. Support frame; 2. Drive frame; 3. Nozzle body; 4. Housing; 5. Heating plate; 6. Nozzle; 7. Carrier;

[0032] 8. Discharge assembly; 801. Collection block; 802. Cleaning rod; 803. Connecting rod; 804. Linkage rod; 805. First spring; 806. Magnet block; 807. Electromagnet; 808. Cleaning pad;

[0033] 901. Pipe; 902. Radiator; 903. Cooling fan; 904. Slider; 905. Sealing plate;

[0034] 10. Drive assembly; 101. Heat-conducting block; 102. Shape memory alloy wire; 103. Heat-conducting rod; 104. Mounting block; 105. Elastic pad;

[0035] 11. Air supply assembly; 111. Cavity; 112. First air pipe; 113. Hollow rod; 114. Cavity body; 115. Air inlet valve;

[0036] 12. Connecting component; 121. Air groove; 122. Through hole; 123. Second air pipe; 124. Sealing block; 125. Second spring;

[0037] 131. Mounting ring; 132. Scraper bar; 133. Spring; 134. Connecting rope; 135. Guide rod;

[0038] 14. Baffle; 15. Brush bristles; 16. Combing bar. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] See also Figures 1 to 8 A carpet 3D printer nozzle device includes a support frame 1, a drive frame 2 mounted on the support frame 1, a nozzle body 3 mounted on the drive frame 2, a housing 4, a heating plate 5 fixedly mounted inside the housing 4, a nozzle 6 fixedly mounted on the bottom wall of the heating plate 5, a carrier frame 7 fixedly mounted on the support frame 1, and an exhaust assembly 8 that cooperates with the nozzle 6 on the support frame 1.

[0041] The discharge assembly 8 includes a collection block 801 detachably mounted on a support frame 1. A cleaning rod 802 is vertically slidably mounted on the top wall of the collection block 801. A connecting rod 803 is fixedly mounted on the side wall of the cleaning rod 802. A linkage rod 804, which is fixedly connected to the connecting rod 803, is vertically slidably mounted on the top wall of the collection block 801. A first spring 805 is installed between the connecting rod 803 and the collection block 801. A magnet 806 is fixedly mounted on the top end of the linkage rod 804. An electromagnet 807 is provided on the housing 4, which attracts the magnet 806. The electromagnet 807 is electrically connected to the drive frame 2. A cleaning pad 808 is fixedly mounted on the cleaning rod 802. An air supply assembly 11 is provided on the housing 4 to supply air to the cleaning pad 808.

[0042] In use, the drive frame 2 moves the printhead body 3, while the material is heated by the heating plate 5. The heated material is then printed onto the carrier frame 7 through the nozzle 6. After printing, the drive frame 2 moves the printhead above the collection block 801 and moves the printhead body 3 downward. During the downward movement of the printhead body 3, the electromagnet 807 moves downward through the housing 4. At this time, the magnetic force between the electromagnet 807 and the magnet block 806 increases. Under the action of the magnetic force, the magnet block 806 moves the linkage rod 804 upward. Furthermore, as the linkage rod 804 moves upward, it drives the cleaning rod 802 to move upward via the connecting rod 803. At this time, the first spring 805 is stretched and has a tendency to return to its original state. As the first spring 805 is stretched, the resistance to the upward movement of the linkage rod 804 increases. Then, as the housing 4 drives the electromagnet 807 to move downward, the distance between the electromagnet 807 and the magnet block 806 gradually decreases, that is, the magnetic force between the electromagnet 807 and the magnet block 806 gradually increases. Therefore, as the nozzle body 3 moves downward, the magnet block 806 moves upward through the linkage rod 803. The moving rod 804 and connecting rod 803 drive the cleaning rod 802 to move upward. During the upward movement of the cleaning rod 802, the cleaning rod 802 gradually inserts into the nozzle 6. When the cleaning rod 802 is about to move to its maximum distance in the nozzle 6, the air supply assembly 11 supplies air to the cleaning pad 808, causing the cleaning pad 808 to expand. After the cleaning rod 802 reaches its maximum upward distance in the nozzle 6, the expansion of the cleaning pad 808 ends, and the nozzle body 3 stops moving downward. Then, the drive frame 2 is de-energized, and the magnetic field of the electromagnet 807 disappears. Then, the first spring 805 contracts and drives the linkage rod 804 and the cleaning rod 802 to move downward through the connecting rod 803. During the downward movement of the cleaning rod 802, the expanded cleaning pad 808 will move downward. It should be noted that the diameter of the cleaning rod 802 is smaller than the diameter of the nozzle 6. The expanded cleaning pad 808 can squeeze out the waste material remaining in the nozzle 6 through the gap between the cleaning rod 802 and the nozzle 6, thereby effectively preventing the nozzle 6 from being blocked or scratched, and improving the efficiency of 3D printing.

[0043] like Figure 6 , Figure 7 As shown, a throat 901 is fixedly installed on the top wall of the heating plate 5, and a radiator 902 is fixedly installed on the throat 901. A cooling fan 903 that cooperates with the throat 901 is fixedly installed on the housing 4. The housing 4 has symmetrically opened sliding grooves, and a slider 904 is slidably installed in the sliding grooves. A blocking plate 905 for blocking the cooling fan 903 is fixedly installed on the slider 904, and a drive assembly 10 that cooperates with the slider 904 is provided on the housing 4.

[0044] The drive assembly 10 includes a heat-conducting block 101 fixedly installed on the side wall of the housing 4. A shape memory alloy wire 102 is installed between the top wall of the heat-conducting block 101 and the slider 904. A heat-conducting rod 103 that fits against the throat tube 901 is fixedly installed on the heat-conducting block 101. An installation block 104 is fixedly installed on the housing 4. An elastic pad 105 is installed between the installation block 104 and the slider 904.

[0045] By adopting the above technical solution, when the nozzle is working, the material enters the heating plate 5 through the throat 901 and then enters the nozzle 6 through the heating plate 5. As the temperature of the heating plate 5 rises, it drives the throat 901 to preheat. When the temperature of the throat 901 is too high, the high temperature of the throat 901 is transferred to the heat-conducting block 101 through the heat-conducting rod 103. Then, the heat-conducting block 101 transfers the temperature to the shape memory alloy wire 102, causing the shape memory alloy wire 102 to expand due to heat. At this time, the elastic pad 105 contracts and drives the sealing plate 905 to move upward through the slider 904. During the upward movement of the sealing plate 905, it gradually loses contact with the cooling fan 903. At this time, the cooling fan 903 can dissipate heat from the throat 901, effectively preventing the throat 901 from becoming too hot. 01. Excessive temperature affects the normal operation of the printing device. After printing, the temperature of the throat 901 gradually decreases. At this time, the temperature of the heat-conducting block 101 also gradually decreases. Then, the shape memory alloy wire 102 assembly contracts and drives the slider 904 to move downward. At this time, the elastic pad 105 is stretched. During the downward movement of the slider 904, the sealing plate 905 is driven to seal the cooling fan 903 again, thereby effectively preventing external dust from adhering to the surface of the cooling fan 903 and affecting the heat dissipation effect of the throat 901. At the same time, by controlling the movement of the sealing plate 905 through the shape memory alloy wire 102, the cooling fan 903 can be sealed during the preheating process of the throat 901, thereby improving the preheating effect of the throat 901 and further improving the working efficiency of the 3D printer.

[0046] like Figure 3 , Figure 4 , Figure 5 , Figure 7 As shown, the air supply assembly 11 includes a cavity 111 formed on the elastic pad 105, a first air pipe 112 inserted into the cavity 111, a hollow rod 113 that slides with the linkage rod 804 fixedly installed on the housing 4, and an electromagnet 807 fixedly installed on the top of the hollow rod 113. The end of the first air pipe 112 away from the cavity 111 is connected to the hollow rod 113. A connecting component 12 is provided on the linkage rod 804, and a cavity 114 is formed on the cleaning pad 808. The first air pipe 112 is connected to the cavity 114 through the connecting component 12. An air inlet valve 115 with its input end connected to the outside is inserted into the cavity 111.

[0047] The connecting component 12 includes an air groove 121 formed on the linkage rod 804, a through hole 122 formed on the air groove 121, a second air pipe 123 connected to the through hole 122 fixedly installed on the linkage rod 804, and the second air pipe 123 connected to the cavity 114, a blocking block 124 for blocking the first air pipe 112 is vertically slidably installed in the hollow rod 113, and a second spring 125 is installed between the blocking block 124 and the hollow rod 113.

[0048] By adopting the above technical solution, during the stretching of the elastic pad 105, the cavity 111 draws air from the outside through the air inlet valve 115. Then, during the contraction of the elastic pad 105, the airflow in the cavity 111 is compressed and tends to flow to the outside through the first air pipe 112. Then, during the upward movement of the linkage rod 804, it gradually inserts into the hollow rod 113 and drives the air groove 121 to move upward. During the upward movement of the linkage rod 804, it drives the sealing block 124 to move upward and compresses the second spring 125. When the cleaning rod 802 is about to reach the highest point, the second air groove 121 connects with the first air pipe 112. At this time, the airflow in the cavity 111 flows into the cavity 114 through the air groove 121, the through hole 122, and the second air pipe 123, causing the cleaning pad 808 to expand. Then, during the downward movement of the cleaning rod 802 and the cleaning pad 808, the material remaining in the nozzle 6 can be squeezed out, effectively preventing the nozzle 6 from being blocked and affecting the normal operation of the printer.

[0049] As the first spring 805 contracts and drives the linkage rod 804 and cleaning rod 802 downward through the connecting rod 803, the linkage rod 804 gradually disengages from the sealing block 124 during its downward movement. At this time, the second spring 125 extends and drives the sealing block 124 to seal the first air pipe 112 again. When the cleaning pad 808 is about to contact the conical surface of the nozzle 6, the linkage rod 804 drives the air groove 121 to connect with the outside. At this time, the cleaning pad 808 contracts and drives the airflow in the cavity 114 to flow to the outside through the second air pipe 123, through hole 122, and air groove 121, thereby ensuring that the cleaning pad 808 moves normally out of the nozzle 6.

[0050] like Figure 3 , Figure 4 As shown, an installation ring 131 is rotatably mounted on the collection block 801, a scraper 132 is fixedly mounted on the top wall of the installation ring 131, a spring 133 is installed between the installation ring 131 and the collection block 801, and a connecting rope 134 fixedly connected to the connecting rod 803 is wound around the installation ring 131.

[0051] The side wall of the scraper 132 is inclined.

[0052] The collection block 801 is rotatably mounted with a guide rod 135 that cooperates with the connecting rope 134.

[0053] By adopting the above technical solution, as the connecting rod 803 moves upward, it drives the connecting rope 134 to move upward. At this time, the spring 133 drives the mounting ring 131 to rotate, and the connecting rope 134 is wound around the mounting ring 131. Then, as the connecting rod 803 moves downward, it pulls the connecting rope 134 downward. At this time, the connecting rope 134 pulls the mounting ring 131 to rotate. At this time, the spring 133 starts to store power. Then, as the mounting ring 131 rotates, it drives the scraper 132 to rotate. During the rotation of the scraper 132, it can clean the material remaining on the cleaning rod 802. As the cleaning pad 808 passes through the scraper 132, the rotating scraper 132 can clean the material adhering to the cleaning pad 808, thereby preventing the material remaining on the surface of the cleaning rod 802 and the scraper 132 from hardening and causing the nozzle 6 to be scratched, thus further improving the working efficiency of the 3D printer.

[0054] During the movement of the connecting rope 134, the guide rod 135 is driven to rotate. The rotation of the guide rod 135 can reduce the wear of the connecting rope 134. During the process of the mounting ring 131 driving the scraper 132 to rotate and clean the material, by making the side wall of the scraper 132 inclined, the scraper 132 can drive the material to move away from the mounting ring 131 through the inclined surface, thereby avoiding the material solidification affecting the normal rotation of the mounting ring 131.

[0055] like Figure 2 , Figure 8 As shown, a baffle 14 for sealing the chute is fixedly installed on the top wall of the sealing plate 905.

[0056] The sealing plate 905 has bristles 15 evenly fixedly installed on its side wall, and the housing 4 has combing rods 16 that cooperate with the bristles 15 evenly fixedly installed on its side wall.

[0057] By adopting the above technical solution, the baffle 14 moves during the movement of the sealing plate 905, and the baffle 14 can block the slide groove during the movement of the baffle 14, thereby preventing external impurities from entering the nozzle body 3 through the slide groove. During the downward movement of the sealing plate 905, the brush 15 moves downward, and the brush 15 can clean the dust on the cooling fan 903 during the downward movement of the brush 15, thereby preventing the dust from clogging the cooling fan 903 and affecting the normal operation of the 3D printer. When the brush 15 passes the combing rod 16, the combing rod 16 can comb the brush 15, thereby improving the cleaning effect of the brush 15.

[0058] Usage: After printing, the drive frame 2 moves the printhead above the collection block 801 and moves the printhead body 3 downward. During this downward movement, the electromagnet 807 moves downward via the housing 4. At this time, the magnetic force between the electromagnet 807 and the magnet 806 increases. Under the influence of this magnetic force, the magnet 806, through the linkage rod 804 and connecting rod 803, moves the cleaning rod 802 upward. When the cleaning rod 802 is about to reach its maximum upward distance within the nozzle 6, the air supply assembly 11 supplies air to the cleaning pad 808, causing the cleaning pad 808 to expand. Meanwhile, the cleaning rod 802... After reaching its maximum upward distance within the nozzle 6, the cleaning pad 808 finishes expanding, and the nozzle body 3 stops moving downward. Then, the drive frame 2 is de-energized, at which point the magnetic field of the electromagnet 807 disappears. Then, the first spring 805 contracts and drives the linkage rod 804 and the cleaning rod 802 downward through the connecting rod 803. During the downward movement of the cleaning rod 802, the expanded cleaning pad 808 will move downward. It should be noted that the diameter of the cleaning rod 802 is smaller than the diameter of the nozzle 6. Then, the expanded cleaning pad 808 can squeeze out the waste material remaining in the nozzle 6 through the gap between the cleaning rod 802 and the nozzle 6.

[0059] Furthermore, when the temperature of the throat 901 is too high, the high temperature of the throat 901 will be transferred to the heat-conducting block 101 through the heat-conducting rod 103. Then, the heat-conducting block 101 will transfer the temperature to the shape memory alloy wire 102, causing the shape memory alloy wire 102 to stretch due to heat. At this time, the elastic pad 105 will contract and drive the sealing plate 905 to move upward through the slider 904. During the upward movement of the sealing plate 905, it will gradually lose contact with the cooling fan 903. At this time, the cooling fan 903 can dissipate heat from the throat 901, effectively preventing the throat 901 from overheating and affecting the normal operation of the printing device. After printing is completed, the temperature of the throat 901 will gradually decrease. At this time, the temperature of the heat-conducting block 101 will gradually decrease. Then, the shape memory alloy wire 102 assembly will contract and drive the slider 904 to move downward. At this time, the elastic pad 105 will be stretched. During the downward movement of the slider 904, the sealing plate 905 will seal the cooling fan 903 again.

[0060] As the connecting rod 803 moves upward, it drives the connecting rope 134 to move upward. At this time, the spring 133 drives the mounting ring 131 to rotate, and the connecting rope 134 is wound around the mounting ring 131. Then, as the connecting rod 803 moves downward, it pulls the connecting rope 134 downward. At this time, the connecting rope 134 pulls the mounting ring 131 to rotate. At this time, the spring 133 starts to store power. Then, as the mounting ring 131 rotates, it drives the scraper 132 to rotate. During the rotation of the scraper 132, it can clean the material remaining on the cleaning rod 802. And as the cleaning pad 808 passes through the scraper 132, the rotating scraper 132 can clean the material adhering to the cleaning pad 808.

[0061] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A carpet 3D printer nozzle assembly, comprising a support frame (1), characterized in that: A drive frame (2) is mounted on the support frame (1), and a nozzle body (3) is mounted on the drive frame (2). The nozzle body (3) includes a housing (4), a heating plate (5) is fixedly installed inside the housing (4), and a nozzle (6) is fixedly installed on the bottom wall of the heating plate (5). A carrier frame (7) is fixedly mounted on the support frame (1), and a discharge assembly (8) that cooperates with the nozzle (6) is provided on the support frame (1). The discharge assembly (8) includes a collection block (801) detachably mounted on a support frame (1). A cleaning rod (802) is vertically slidably mounted on the top wall of the collection block (801). A connecting rod (803) is fixedly mounted on the side wall of the cleaning rod (802). A linkage rod (804) fixedly connected to the connecting rod (803) is vertically slidably mounted on the top wall of the collection block (801). The connecting rod (803) and the collection block (801) are connected by a linkage rod (804). A first spring (805) is installed together between the two parts. A magnet (806) is fixedly installed at the top of the linkage rod (804). An electromagnet (807) that attracts the magnet (806) is provided on the housing (4). The electromagnet (807) is electrically connected to the drive frame (2). A cleaning pad (808) is fixedly installed on the cleaning rod (802). An air supply assembly (11) for supplying air to the cleaning pad (808) is provided on the housing (4).

2. The carpet 3D printer nozzle device according to claim 1, characterized in that: A throat (901) is fixedly installed on the top wall of the heating plate (5), and a radiator (902) is fixedly installed on the throat (901). A cooling fan (903) that cooperates with the throat (901) is fixedly installed on the housing (4). A sliding groove is symmetrically opened on the housing (4), and a slider (904) is slidably installed in the sliding groove. A blocking plate (905) for blocking the cooling fan (903) is fixedly installed on the slider (904), and a drive assembly (10) that cooperates with the slider (904) is provided on the housing (4).

3. The carpet 3D printer nozzle device according to claim 2, characterized in that: The drive assembly (10) includes a heat-conducting block (101) fixedly installed on the side wall of the housing (4). A shape memory alloy wire (102) is installed between the top wall of the heat-conducting block (101) and the slider (904). A heat-conducting rod (103) that fits against the throat (901) is fixedly installed on the heat-conducting block (101). An mounting block (104) is fixedly installed on the housing (4). An elastic pad (105) is installed between the mounting block (104) and the slider (904).

4. The carpet 3D printer nozzle device according to claim 3, characterized in that: The air supply assembly (11) includes a cavity (111) formed on an elastic pad (105), a first air pipe (112) inserted into the cavity (111), a hollow rod (113) that slides with a linkage rod (804) fixedly installed on the housing (4), and an electromagnet (807) fixedly installed at the top of the hollow rod (113). The end of the first air pipe (112) away from the cavity (111) is connected to the hollow rod (113). A connecting assembly (12) is provided on the linkage rod (804), and a cavity (114) is formed on the cleaning pad (808). The first air pipe (112) is connected to the cavity (114) through the connecting assembly (12). An air inlet valve (115) with an input end connected to the outside is inserted into the cavity (111).

5. The carpet 3D printer nozzle device according to claim 4, characterized in that: The connecting component (12) includes an air groove (121) opened on the linkage rod (804), the air groove (121) is provided with a through hole (122), a second air pipe (123) communicating with the through hole (122) is fixedly installed on the linkage rod (804), and the second air pipe (123) is communicating with the cavity (114). A blocking block (124) for blocking the first air pipe (112) is vertically slidably installed in the hollow rod (113), and a second spring (125) is installed between the blocking block (124) and the hollow rod (113).

6. The carpet 3D printer nozzle device according to claim 1, characterized in that: An installation ring (131) is rotatably mounted on the collection block (801). A scraper (132) is fixedly mounted on the top wall of the installation ring (131). A spring (133) is installed between the installation ring (131) and the collection block (801). A connecting rope (134) that is fixedly connected to the connecting rod (803) is wound around the installation ring (131).

7. The carpet 3D printer nozzle device according to claim 6, characterized in that: The scraper (132) has a sloping sidewall.

8. The carpet 3D printer nozzle device according to claim 6, characterized in that: The collecting block (801) is rotatably mounted with a guide rod (135) that cooperates with the connecting rope (134).

9. The carpet 3D printer nozzle device according to claim 2, characterized in that: A baffle (14) for sealing the chute is fixedly installed on the top wall of the sealing plate (905).

10. The carpet 3D printer nozzle device according to claim 2, characterized in that: The sealing plate (905) has bristles (15) evenly fixedly installed on its side wall, and the housing (4) has combing rods (16) that cooperate with the bristles (15) evenly fixedly installed on its side wall.

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