Waste removal apparatus for 3D printer, and 3D printer

Abstract

The present application discloses a waste removal apparatus for a 3D printer, and a 3D printer, the waste removal apparatus being disposed in a 3D printer. The 3D printer is provided with a cavity enclosed by a housing, the housing being provided with a channel extending from the interior of the cavity to the exterior of the cavity; the waste removal apparatus is disposed in the cavity, the waste removal apparatus comprising a trigger member and a material receiving member; the trigger member is slidably connected to a main body of the waste removal apparatus, and the material receiving member has a linking connection to the trigger member; when the trigger member is not being triggered, the material receiving member is located at an opening of the channel facing the interior of the cavity, and the surface area of the material receiving member is greater than or equal the surface area of the opening. Implementing the present application eliminates the need for manual operations by the user, achieves a high degree of automation, and achieves a high clearing efficiency, which can improve the working efficiency of a 3D printer.

Description

Waste removal device for 3D printer and 3D printer

[0001] This application claims priority to the Chinese patent application filed with the Patent Office of China on August 30, 2023, with application number 202322363473.5 and application name “A waste cleaning device for a 3D printer and a 3D printer”, and the Chinese patent application filed with the Patent Office of China on October 13, 2023, with application number 202322762955.8 and application name “A waste cleaning device for a 3D printer and a 3D printer”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of 3D printing technology, and in particular to a waste removal device for a 3D printer and a 3D printer. Background Art

[0003] A 3D printer (also known as a 3D printer or stereo printer) is a type of rapid prototyping equipment. The 3D printing technology currently available for 3D printers is fused deposition modeling (FDM). FDM is a technology that uses digital models and uses materials such as powdered metal or plastic to construct three-dimensional objects through layer-by-layer printing. Specifically, a 3D printer using FDM technology uses a feeding device to supply hot-melt filament material (also known as consumables) to a nozzle, where the consumables are heated to a molten state. The nozzle can then extrude the molten consumables onto the print plate while moving along the 3D printer's printing path, printing out a three-dimensional object layer by layer.

[0004] When printing with different consumables, the nozzle needs to eject the previous consumable, that is, the nozzle needs to eject the waste material, and then transfer the next consumable to the nozzle for heating. Or in the preparation stage of printing, the nozzle also needs to eject the residual consumable from the previous print. How to clean the residual consumable ejected by the nozzle is a key issue.

[0005] Summary of the Invention

[0006] The present application proposes a waste removal device for a 3D printer and a 3D printer, which do not require user intervention, have a high degree of automation, and have high removal efficiency.

[0007] In a first aspect, an embodiment of the present application provides a waste removal device for a 3D printer, wherein the waste removal device is disposed in a 3D printer having a cavity surrounded by a housing, wherein the housing has a passage extending from the cavity to the outside of the cavity;

[0008] The waste removal device is arranged in the cavity, and the waste removal device includes a trigger and a material receiving member; wherein,

[0009] The trigger member is slidably connected to the body of the waste removal device;

[0010] The material receiving member is linked to the trigger member. When the trigger member is not triggered, the material receiving member is located at the opening of the channel facing the cavity, and the surface area of ​​the material receiving member is equal to or greater than the surface area of ​​the opening.

[0011] In conjunction with the first aspect, in a first possible implementation, the surface area of ​​the material receiving member is equal to or greater than the surface area of ​​the opening. This application utilizes the material receiving member to block the channel opening, thereby maintaining a sealed state when waste material is not being removed. This reduces the leakage of gas generated during printing and reduces the effect of gas outside the 3D printer cavity on the temperature inside the cavity, thereby facilitating cavity temperature maintenance and improving printing quality.

[0012] In combination with the first aspect or any one of the foregoing possible implementations of the first aspect, in a second possible implementation, the device further includes an elastic member, one side of the elastic member being connected to the trigger member or the material receiving member, and the other side of the elastic member being fixedly disposed. The present application utilizes the elastic member to enable the trigger or the material receiving member to automatically reset after being triggered.

[0013] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in a third possible implementation, the device further includes a magnetic component; wherein the trigger member includes metal; and the magnetic component is disposed on the print head of the 3D printer or the housing of the 3D printer. In this application, the magnetic component cooperates with the metal on the trigger to enable the trigger to automatically reset after being triggered.

[0014] In combination with the first aspect or any one of the above possible implementations of the first aspect, in a fourth possible implementation, a stroke amplification mechanism is further included; the trigger member is connected to the material receiving member via the stroke amplification mechanism. In this application, the stroke amplification mechanism is used to cause the trigger member to move within a small range, while causing the material receiving member to move within a large range.

[0015] In combination with the first aspect or any one of the foregoing possible implementations of the first aspect, in a fifth possible implementation, the waste removal device further includes an elastic member, one side of the elastic member being connected to the stroke amplification structure, and the other side of the elastic member being fixedly disposed. In the present application, the elastic member resets the stroke amplification structure when the triggering event disappears.

[0016] In combination with the first aspect or any one of the foregoing possible implementations of the first aspect, in a sixth possible implementation, the stroke amplification mechanism includes a transmission rod; a first end of the transmission rod is rotatably connected to a body of the waste material removal device, a second end of the transmission rod is connected to the material receiving member, and the trigger member is connected between the first and second ends of the transmission rod. In this application, the transmission rod is used to cause the trigger member to move within a small range, thereby causing the material receiving member to move within a large range.

[0017] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in a seventh possible implementation, the stroke amplification mechanism includes two gears of different diameters, the trigger member is connected to the smaller-diameter gear, and the material receiving member is connected to the larger-diameter gear. By employing a gear meshing transmission, this application can save space and achieve high space utilization.

[0018] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in an eighth possible implementation, the waste removal device further includes a first wiping member and a mounting base; the mounting base is fixedly disposed on the body of the waste removal device; and the first wiping member is disposed on a side of the mounting base facing the print head. In this application, the mounting base enables the second wiping member to be mounted and fixed, and the first wiping member can be used to clean the nozzles of the print head.

[0019] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in a ninth possible implementation, the first wiping member comprises a metal cylinder, and the diameter of the first wiping member is greater than or equal to 1 mm and less than 4 mm. In the present application, the diameter of the first wiping member is set to range from 1 mm to 4 mm, thereby increasing the shear force of the first wiping member and enabling the first wiping member to better perform the scraping action.

[0020] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in a tenth possible implementation, the device further includes: a second wiper rotatably connected to the body of the waste removal device, wherein a surface of the second wiper has a plurality of protrusions. In this application, by providing the plurality of protrusions on the second wiper, the nozzle moves back and forth to contact the plurality of protrusions on the second wiper, thereby cleaning the side of the nozzle.

[0021] In combination with the first aspect or any one of the possible implementations of the first aspect, in an eleventh possible implementation, the second wiper includes a silicone wiper. In this application, the silicone wiper is equivalent to a silicone soft brush, which can improve the cleaning effect of the nozzle and avoid damaging the nozzle.

[0022] In combination with the first aspect or any one of the above possible implementations of the first aspect, in a twelfth possible implementation, the waste removal device further includes a silicone wiper, which is fixedly mounted on the body of the waste removal device; the first wiper, the silicone wiper, and the opening are located on the same side of the body of the waste removal device, and the first wiper is located between the silicone wiper and the opening. By simultaneously providing the first wiper and the silicone wiper, the present application can sequentially contact the first wiper and the silicone wiper for multiple cleanings, thereby improving the nozzle cleaning effect.

[0023] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in a thirteenth possible implementation, the surface area of ​​the opening is larger than the cross-sectional area of ​​the waste generated by the 3D printer. By configuring the opening of the channel into the cavity to be larger than the cross-sectional area of ​​the waste, the waste can be more easily discharged from the 3D printer through the channel.

[0024] In combination with the first aspect or any one of the foregoing possible implementations of the first aspect, in a fourteenth possible implementation, the waste material removal device further comprises an upper cover provided with a blocking portion in the direction of movement of the material receiving member along the direction in which the material receiving member is exposed to the opening, and the plane on which the material receiving member is located is lower than the lowest point of the blocking portion. Waste material ejected from the nozzle of the present application can be blocked by the upper cover during movement of the material receiving member and fall through the exposed opening into the channel and discharged from the 3D printer.

[0025] In combination with the first aspect or any of the foregoing possible implementations of the first aspect, in a fifteenth possible implementation, the 3D printer includes a nozzle, and the body of the material receiving member is provided with a groove corresponding to the nozzle. In this application, the groove receives waste material ejected from the nozzle, thereby making it easier to gather the waste material ejected from the nozzle into a ball, thereby facilitating discharge of the waste material from the 3D printer.

[0026] In a second aspect, an embodiment of the present application provides a waste removal device for a 3D printer, wherein the waste removal device includes a triggering member, a material pushing member, and a material receiving member; wherein,

[0027] The trigger is slidably connected or rotationally connected to the body of the waste removal device;

[0028] The triggering member is linked to the pushing member;

[0029] The material receiving member is fixedly arranged on the main body of the waste material removing device, and the material pushing member is located on a side of the material receiving member facing the print head.

[0030] In conjunction with the second aspect, in a first possible implementation, the pusher and the receiving member are plate-shaped, and the plane on which the pusher is located forms an angle greater than 0° and less than 180° with the plane on which the receiving member is located. By setting a certain angle between the pusher and the receiving member, the present application enables the pusher to push away waste material from the receiving member.

[0031] In combination with the second aspect or any one of the possible implementations of the second aspect, in the second possible implementation, the distance between the side of the pusher close to the material receiving member and the material receiving member is greater than 0.5 mm but less than 1 cm, and the side of the pusher away from the material receiving member is lower than the height of the print head. In the present application, the distance between the side of the material receiving member and the material receiving member is greater than 0.5 mm but less than 1 cm, which can avoid interference between the pusher and the material receiving member during the movement over the material receiving member, and makes the side of the pusher close to the material receiving member closer to the material receiving member, so that more waste materials can be pushed with less force, and at the same time, the side of the pusher away from the material receiving member is lower than the height of the print head, ensuring that the pusher does not scrape the nozzle body.

[0032] In combination with the second aspect or any of the foregoing possible implementations of the second aspect, in a third possible implementation, the device further includes an elastic member, one side of the elastic member being connected to the trigger member or the pusher member, and the other side of the elastic member being fixedly disposed. The present application uses the elastic member to enable the trigger or the material receiving member to automatically reset after being triggered.

[0033] In combination with the second aspect or any of the foregoing possible implementations of the second aspect, in a fourth possible implementation, the device further includes a magnetic component; wherein the trigger member includes metal; and the magnetic component is disposed on the print head of the 3D printer or the housing of the 3D printer. In this application, the magnetic component cooperates with the metal on the trigger to enable the trigger to automatically reset after being triggered.

[0034] In combination with the second aspect or any of the foregoing possible implementations of the second aspect, in a fifth possible implementation, the trigger member is rod-shaped, having a first end and a second end, wherein a first portion of the trigger member is rotatably connected to the main body of the waste removal device, and the first portion is the portion of the trigger member located between the first end and the second end; and the first end of the trigger member is triggered by the 3D printer. In this application, the trigger member is configured as a rod, and based on the lever theorem, the pusher member is pulled, thereby reducing the difficulty of triggering.

[0035] In combination with the second aspect or any one of the above-mentioned possible implementation methods of the second aspect, in a sixth possible implementation method, the second end of the trigger member is connected to the pushing member; wherein, the distance between the first end and the first part is a first length, and the distance between the second end and the first part is a second length, and the first length is smaller than the second length.

[0036] In combination with the second aspect or any of the foregoing possible implementations of the second aspect, in a seventh possible implementation, the waste removal device further includes a connecting member connecting the second end of the trigger member to the pusher member; and further includes an elastic member, one side of the elastic member being connected to the connecting member and the other side of the elastic member being fixedly disposed. In the present application, the trigger member is connected to the pusher member via the connecting member, so that the trigger member can control the pusher member via the connecting member, and the elastic member enables the assembly consisting of the trigger member, the connecting member, and the pusher member to reset after the triggering event is eliminated.

[0037] In combination with the second aspect or any of the above possible implementations of the second aspect, in an eighth possible implementation, the present invention further includes two gears of different diameters, wherein the trigger member is connected to the smaller diameter gear, and the material receiving member is connected to the larger diameter gear. The present application adopts a gear meshing transmission method, which can save space and has high space utilization.

[0038] In combination with the second aspect or any of the foregoing possible implementations of the second aspect, in a ninth possible implementation, a second wiper is rotatably connected to the body of the waste removal device, and a surface of the second wiper has a plurality of protrusions. In the present application, the plurality of protrusions are provided on the second wiper, so that the nozzle moves back and forth to contact the plurality of protrusions on the second wiper to clean the sides of the nozzle.

[0039] In combination with the second aspect or any one of the above possible implementations of the second aspect, in a tenth possible implementation, the second wiper also includes a silicone wiper. In this application, the silicone wiper is equivalent to a silicone soft brush, which can improve the cleaning effect of the nozzle and avoid damaging the nozzle.

[0040] In combination with the second aspect or any of the foregoing possible implementations of the second aspect, in an eleventh possible implementation, the print head has a nozzle, and the body of the material receiving member is provided with a groove corresponding to the nozzle. In the present application, the groove receives waste material ejected from the nozzle, thereby making it easier to gather the waste material ejected from the nozzle into a ball, thereby facilitating discharge of the waste material out of the 3D printer.

[0041] In a third aspect, an embodiment of the present application provides a waste removal device for a 3D printer, the waste removal device comprising a trigger member, a transmission member, an elastic member, a push plate and a receiving plate; wherein,

[0042] One end of the trigger member is connected to one end of the transmission member, and the other end of the trigger member is used to contact the print head of the 3D printer;

[0043] The other end of the transmission member is connected to one end of the pushing member;

[0044] The other end of the pushing member is connected to one end of the elastic member, and the other end of the elastic member is connected to the housing of the waste removing device;

[0045] The portion of the material pusher located outside the housing of the waste material removal device is on the side of the material receiving member facing the print head. The material receiving member is fixedly connected to the housing of the waste material removal device, and the material receiving plate is used to receive waste from the 3D printer. The waste material removal device of the present embodiment can prevent waste material from falling onto the print panel when the print head discharges waste material, and can automatically remove waste material remaining on the material receiving plate, thereby improving the operating efficiency of the 3D printer.

[0046] In combination with the third aspect, in a first possible implementation manner, the triggering member includes a triggering rack, and the transmission member includes a gear;

[0047] The trigger rack is provided with saw teeth at one end connected to the gear, and the saw teeth of the trigger rack are used for meshing transmission with the gear. The present application adopts the meshing transmission mode, which can save space and has high space utilization.

[0048] In combination with the third aspect or any one of the above-mentioned possible implementations of the first aspect, in a second possible implementation, the trigger rack is provided with a first groove, and the shell of the waste removing device is provided with a first track corresponding to the first groove; the first groove is slidably connected to the first track.

[0049] This application allows the trigger rack to move within the housing without increasing the cost, which is low-cost.

[0050] In combination with the third aspect or any one of the above possible implementations of the first aspect, in a third possible implementation, the trigger member further includes a protrusion, and the protrusion of the trigger member is protruded from the first movable hole of the waste removing device.

[0051] In combination with the third aspect or any one of the foregoing possible implementations of the third aspect, in a fourth possible implementation, the pusher includes a pusher rack; the transmission member includes a gear;

[0052] The pusher rack is provided with saw teeth at one end connected to the gear, and the saw teeth of the pusher rack are used for meshing and transmitting with the gear.

[0053] The present application adopts a meshing transmission method, which can save space and has a high space utilization rate. The present application adopts a meshing transmission method, which can save space and has a high space utilization rate.

[0054] In combination with the third aspect or any one of the above possible implementations of the third aspect, in a fifth possible implementation, the push rack is provided with a second groove and a fixing column is provided at one end of the second groove; the second groove accommodates the elastic member, and one end of the elastic member is connected to the fixing column.

[0055] In combination with the third aspect or any one of the foregoing possible implementations of the third aspect, in a sixth possible implementation, the pusher rack is provided with a third groove, and the housing of the waste removal device is provided with a second track corresponding to the third groove;

[0056] The third groove is slidably connected to the second track.

[0057] The present application allows the push rack to move within the housing without increasing the cost, and the cost is low.

[0058] In combination with the third aspect or any one of the foregoing possible implementations of the third aspect, in a seventh possible implementation, the pusher further includes a pusher plate;

[0059] A connecting block is provided on the pusher rack, and the connecting block is located in the second moving hole of the waste removing device; the connecting block is connected to the pusher plate.

[0060] By driving the push plate in the above manner, the entire transmission process can be driven by a purely mechanical structure, avoiding the waste removal device from including a circuit structure, reducing manufacturing costs while ensuring the stability of the waste removal device.

[0061] In combination with the third aspect or any one of the above possible implementations of the third aspect, in an eighth possible implementation, the housing of the waste removal device includes a hanging arm, and the plane where the hanging arm is located forms a preset angle with the plane where the shell is located; wherein,

[0062] The hanging arm is fixedly connected to the profile provided with the guide rail in the 3D printer;

[0063] By implementing the embodiments of the present application, it is possible to achieve that when the trigger member contacts the print head, the push plate is driven to move by the print head, thereby clearing the waste material on the receiving plate. Furthermore, by accommodating the transmission member and the elastic member into the interior of the shell, the transmission member and the elastic member can be effectively protected, thereby further improving the stability of the waste removing device.

[0064] In combination with the third aspect or any one of the above possible implementations of the third aspect, in a ninth possible implementation, the receiving plate is fixedly connected to the side of the shell near the second movable hole.

[0065] In combination with the third aspect or any one of the foregoing possible implementations of the third aspect, in a tenth possible implementation, the 3D printer includes a print head and a motor, and the print head is provided with a nozzle;

[0066] When the print head is driven by the motor to move to contact the trigger member, the push plate is located on a side of the nozzle away from the motor.

[0067] Thereby, the first position is the side away from the motor, and the second position is the side close to the motor, thereby achieving that when the push plate is reset from the second position to the first position and scrapes away the waste, the waste falling position can be away from the printing panel.

[0068] In a fourth aspect, an embodiment of the present application provides a 3D printer, comprising a print head and a waste removal device according to the first aspect or any one of the possible implementations of the first aspect.

[0069] It can be seen that in the present application, the waste removal device is provided in a 3D printer, the 3D printer has a cavity surrounded by a shell, wherein the shell is provided with a passage leading from the inside of the cavity to the outside of the cavity; the waste removal device is provided in the cavity, and the waste removal device includes a trigger member and a material receiving member; wherein the trigger member is slidably connected to the main body of the waste removal device; the material receiving member is linked to the trigger member, and when the trigger member is not triggered, the material receiving member is located at the opening of the passage toward the inside of the cavity, and the surface area of ​​the material receiving member is equal to or greater than the surface area of ​​the opening. The implementation of the present application does not require user intervention, has a high degree of automation, and has high cleaning efficiency, which can improve the working efficiency of the 3D printer.

[0070] It should be understood that the implementation and beneficial effects of the above-mentioned aspects of the present application can be referenced to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] FIG1 is a schematic diagram of an application scenario of a 3D printer provided in an embodiment of the present application;

[0072] FIG2 is a first structural schematic diagram of a waste removal device provided in an embodiment of the present application;

[0073] FIG3 is a second structural schematic diagram of the waste removal device provided in an embodiment of the present application;

[0074] FIG4 is a third structural schematic diagram of the waste removal device provided in an embodiment of the present application;

[0075] FIG5 is a fourth structural schematic diagram of the waste removal device provided in an embodiment of the present application;

[0076] FIG6 is a fifth structural diagram of the waste removal device provided in an embodiment of the present application;

[0077] FIG7 is a sixth structural schematic diagram of the waste removal device provided in an embodiment of the present application;

[0078] FIG8 is a schematic diagram of another application scenario of the 3D printer provided in an embodiment of the present application;

[0079] FIG9 is a schematic structural diagram of a waste removal device provided in an embodiment of the present application;

[0080] FIG10 is a schematic diagram of the internal structure of the waste removal device shown in FIG9;

[0081] FIG11 is another schematic diagram of the internal structure of the waste removal device shown in FIG9;

[0082] FIG12 is another schematic structural diagram of a waste removal device provided in an embodiment of the present application;

[0083] 13a to 13c are schematic diagrams of the status of the waste removal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0084] The implementation of the technical solution of the present application is further described in detail below with reference to the accompanying drawings.

[0085] See Figure 1, which is a schematic diagram of an application scenario of a 3D printer provided in an embodiment of the present application. As shown in Figure 1, the 3D printer includes a housing 100 and a cavity formed by the housing 100. The cavity is sealed, and Figure 1 does not show all of the housings that form the sealed cavity for illustrative purposes. A waste removal device 130 and a print head 110 are disposed within the cavity; the housing 100 is provided with a passage leading from the cavity to the outside. This passage is used to discharge waste material ejected from the nozzle out of the 3D printer.

[0086] The waste material removal device 130 includes a trigger and a material receiving member, wherein the material receiving member is linked to the trigger. When the trigger is not triggered, the material receiving member covers the opening of the passage toward the cavity. Optionally, the surface area of ​​the material receiving member is equal to or greater than the surface area of ​​the opening.

[0087] In this application, the term "connection" includes both detachable and non-detachable connections. For example, a fixed connection may include both detachable and non-detachable fixed connections, a rotational connection may include both detachable and non-detachable rotational connections, and a sliding connection may include both detachable and non-detachable sliding connections. A connection may also be a direct connection or an indirect connection via a component.

[0088] Specifically, the print head 110 moves in the cavity to heat the printing material and extrude the heated and melted printing material. When it is necessary to remove waste material from the print head 110, for example, when switching from one printing material to another, i.e., during multi-color printing, when starting or ending printing, the print head 110 moves to the top of the material receiving member and spits out the waste material; after spewing out the waste material, the print head 110 moves to the trigger member and contacts the trigger member. Alternatively, during the process of the print head 110 moving to the material receiving member, the trigger member can be triggered by the print head. After the trigger member is triggered, it can pull the material receiving member to expose the opening of the channel, and discharge the waste material from the channel out of the 3D printer.

[0089] The structure of the waste removal device 130 will be described in detail below with reference to FIG. 2 to FIG. 5 .

[0090] As shown in Figure 2, the waste removal device 130 includes a trigger member 131 and a material receiving member 132; wherein, the trigger member 131 is slidably connected to the main body of the waste removal device 130; the material receiving member 132 is linked to the trigger member 131, and when the trigger member 131 is not triggered, the material receiving member 132 is located at the opening of the channel facing the cavity.

[0091] Optionally, the surface area of ​​the material receiving member 132 is equal to or greater than the surface area of ​​the opening. As shown in Figure 2, the waste removing device has an opening only below the material receiving member 132, and other positions are sealed. When the trigger member 131 does not move (i.e., it is not triggered), the surface area of ​​the material receiving member 132 is greater than the surface area of ​​the opening, that is, the material receiving member 132 can block the opening during the 3D printing process, and expose the opening when the waste needs to be discharged from the 3D printer, so that the waste can fall through the opening into the channel and thus be discharged from the 3D printer.

[0092] In a specific implementation, the 3D printer has a nozzle, and a groove 1321 is provided on the body of the material receiving member 132 corresponding to the nozzle. That is, when the print head moves to the top of the material receiving member 132, the nozzle is located above the groove 1321. At this time, the waste material ejected by the nozzle is more likely to form a ball under the action of the groove 1321. The so-called balling means that the waste material ejected by the nozzle is gathered into a ball, rather than individual filaments. After the waste material ejected by the nozzle is balled, it can be discharged from the 3D printer by gravity, and there will be no individual filaments floating in the cavity of the 3D printer to interfere with the molding of the printed part, and there will be no filaments hanging on the nozzle, which can ensure the printing quality of the 3D printer. The print head 110 can move in the cavity formed by the shell 100 of the 3D printer, and deposit printing materials on the 3D printing platform 120 through the nozzle. The trigger member 131 is set within the moving range of the print head 110. When it is necessary to clear the waste material in the nozzle of the print head 110, the print head 110 moves to the top of the groove 1321 of the material receiving member and spits the waste material from the nozzle into the groove 1321. After spewing out the waste material or during the movement of the print head, the print head 110 contacts the trigger member 131 to apply a certain pressure to the trigger member 131, so that the trigger member 131 is triggered by the print head 110, and then the material receiving member 132 is pulled to move to expose the opening of the channel, so that the waste material spewed out of the groove 1321 can be discharged from the opening along the channel outside the 3D printer. Optionally, the trigger member 131 is triggered, which means that the trigger member 131 can drive the material receiving member 132 to move. It can be triggered by the collision / contact of the print head, or it can be triggered in a non-contact manner, such as using the magnet on the print head to attract / repel.

[0093] The surface area of ​​the opening is larger than the cross-sectional area of ​​the waste generated by the 3D printer. Specifically, the opening of the channel toward the cavity is set to be larger than the cross-sectional area of ​​the waste, so that the waste can be more easily discharged from the 3D printer through the channel.

[0094] In some feasible embodiments, the waste material removal device further includes an upper cover 133 having a blocking portion 134 disposed in the direction of movement of the material receiving member 132 along the exposed opening. The plane of the material receiving member 132 is lower than the lowest point of the blocking portion 134. As the material receiving member 132 moves, the blocking portion 134 is fixedly disposed in the movement path of the material receiving member 132. Thus, waste material ejected from the nozzle can be blocked by the upper cover 133 during the movement of the material receiving member 132 and fall through the exposed opening into the channel and out of the 3D printer.

[0095] As can be seen, in this embodiment, the waste removal device 130 blocks the passage of the 3D printer, so that the interior of the 3D printer is in a sealed state when waste removal is not being performed. When the 3D printer is performing waste removal, the waste removal device 130 removes the waste along the opening of the passage, and then restores the sealed state, so that the 3D printer as a whole forms a closed cavity, reducing the leakage of gas generated by printing. It can also reduce the interference of gas outside the 3D printer cavity on the temperature inside the cavity, which is conducive to maintaining the cavity temperature and improving printing quality. The implementation of this application has a high degree of automation and high removal efficiency of waste removal, which can improve the working efficiency of the 3D printer.

[0096] In some feasible implementations, please refer to Figures 3 to 5 , the waste removal device 130 further includes an elastic member 135 , one side of the elastic member 135 is connected to the trigger member or the material receiving member, and the other side of the elastic member 135 is fixed.

[0097] For example, the elastic member 135 can be a spring, rubber, etc., which is not limited here.

[0098] In a specific implementation, the elastic member 135 can be fixedly mounted on the body of the waste material removal device 130 or on other components of the 3D printer, as long as it can achieve the reset of the trigger member and / or the material receiving member. When the trigger member is triggered, the elastic member 135 deforms with the movement of the trigger member or the material receiving member, such as being stretched or compressed. When the triggering event of the trigger member disappears, such as when the print head 110 separates from the trigger member, the elastic member 135 rebounds and resets, pulling the trigger member and the material receiving member back into position.

[0099] In some possible implementations, a magnetic component can be used to reset the trigger and the receiving member; the trigger includes metal, that is, the trigger itself can be made of metal, or a metal sheet can be attached to the surface of the trigger, or metal can be provided inside the trigger. The magnetic component is arranged in the opposite direction of the movement of the trigger after being triggered, for example, it is arranged on the print head of a 3D printer or the housing of a 3D printer. Specifically, when the trigger is not triggered, it can be considered that the trigger is in a natural state, and the trigger is attracted / repelled by the magnetic component; when the trigger is triggered, the trigger breaks free from the attraction / repulsion of the magnetic component and moves, but is still within the magnetic force range of the magnetic component; after the trigger event of the trigger disappears, for example, after the print head 110 is separated from the trigger, the trigger is attracted / repelled by the magnetic force of the magnetic component and returns to the natural state, and the trigger pulls the receiving member to reset the receiving member.

[0100] It is understandable that the magnetic component can be any object that can generate magnetic force, such as an iron-chromium-cobalt magnet, a nepheline magnet, or an electromagnet.

[0101] As can be seen, in this example, the trigger and receiving member are reset by means of an elastic member 135 or a magnetic component. After the waste material ejected from the nozzle falls through the opening into the channel, the opening is sealed, forming a closed cavity. This eliminates the need for user intervention, provides a high degree of automation, and achieves high cleaning efficiency, thereby improving the efficiency of the 3D printer.

[0102] In some possible implementations, the waste removal device further includes a stroke amplification mechanism; the trigger member is connected to the material receiving member via the stroke amplification mechanism. The stroke amplification mechanism allows the trigger member to move within a narrow range, while allowing the material receiving member to move within a wide range. Because the opening exposed by the material receiving member after movement has size requirements and must be larger than the cross-sectional area of ​​the waste material to allow it to fall smoothly, the material receiving member's range of movement also has size requirements. For example, the material receiving member's movement path must be greater than 2 cm. Since the trigger member and the material receiving member are linked, without a stroke amplification mechanism, the trigger member must also move within a path greater than 2 cm. However, this movement path within the cavity interferes with the movement of the print head during normal printing, requiring a clearance space for the trigger member. This clearance space is relatively large, increasing the size of the 3D printer. In implementing the present application, using a stroke amplification mechanism, assuming a 1:2 stroke amplification ratio, i.e., the trigger member is connected to the middle of the transmission rod 136, the material receiving member's movement path is greater than 2 cm, while the trigger member's movement path is only 1 cm. This can reduce the size of the clearance space and thus the size of the 3D printer. Moreover, in the present application, the moving direction of the trigger member is the same as the moving direction of the material receiving member, that is, by using a same-direction stroke amplification mechanism, the size of the waste removal device in the moving direction of the trigger member and the material receiving member can be further reduced, making the size of the 3D printer more compact.

[0103] Optionally, the stroke amplification mechanism includes a transmission rod 136; the first end of the transmission rod 136 is rotatably connected to the body of the waste removal device 130, the second end of the transmission rod 136 is connected to the material receiving member, and the trigger member is connected between the first end and the second end of the transmission rod 136.

[0104] Specifically, a first rotating shaft 137 is provided on the body of the waste removal device 130, and a first groove or a first through-hole is formed in the transmission rod 136 corresponding to the first rotating shaft 137. The transmission rod 136 is sleeved on the first rotating shaft 137 through the first groove or through-hole, so that the transmission rod 136 can rotate about the first rotating shaft 137. Alternatively, the first rotating shaft 137 can be provided on the transmission rod 136, and the first groove or the first through-hole can be provided on the body of the waste removal device 130 to achieve the same effect.

[0105] A protrusion 1361 is provided between the first and second ends of the transmission rod 136. The trigger member is provided with a second groove or second through-hole that mates with the protrusion 1361. The trigger member connects to the protrusion 1361 of the transmission rod 136 via the second groove or second through-hole, enabling the trigger member to achieve coordinated movement with the transmission rod 136. Specifically, when triggered, the trigger member can pull the transmission rod 136 to rotate about the axis. The movable range within the second groove or second through-hole is greater than the size of the protrusion 1361.

[0106] The second end of the transmission rod 136 can be connected to the material receiving member through a second rotating shaft. When the trigger member pulls the transmission rod 136 to move, the transmission rod 136 also pulls the material receiving member to move.

[0107] In some possible embodiments, the body of the waste removal device 130 is provided with a first slide rail, and the trigger member is provided with a first track that cooperates with the first slide rail. The first slide rail and the first track cooperate to enable the trigger member to slide on the first slide rail. It is understood that the connection between the trigger member and the body of the waste removal device 130 can be other forms besides the first slide rail and the first track, such as a sleeve, and is not limited to this exclusive form.

[0108] Similarly, the waste removal device 130 can also be provided with a second slide rail, and a second track can be provided on the material receiving piece. The second slide rail cooperates with the second track so that the material receiving piece can slide with the traction of the transmission rod 136.

[0109] It can be understood that the positions of the first slide rail and the first track can be interchanged, and the positions of the second slide rail and the second track can also be interchanged; that is, the first track is set on the waste removal device 130, the first slide rail is set on the trigger member, the second track is set on the waste removal device 130, and the second slide rail is set on the material receiving member.

[0110] In some possible embodiments, when the waste material removal device includes a stroke amplification structure, one side of the elastic member may be connected to the stroke amplification structure, while the other side of the elastic member is fixed. Specifically, when the trigger member is triggered, the stroke amplification structure is pulled by the trigger member and rotates, causing the elastic member to stretch / compress. When the triggering event disappears, for example, when the print head 110 separates from the trigger member, the elastic member rebounds and pulls the stroke amplification structure back to its original position, while the material receiving member is also pulled back to its original position by the stroke amplification structure.

[0111] In some possible implementations, the stroke amplification mechanism includes two gears with different diameters, the triggering member is connected to the small-diameter gear, and the material receiving member is connected to the large-diameter gear.

[0112] For example, the large-diameter gear and the small-diameter gear may be integrated stepped gears or assembled discrete gears, which is not limited here.

[0113] In a specific implementation, the trigger member may include a trigger rack having a first serration at one end connected to the small-diameter gear, the trigger rack meshing with the small-diameter gear via the first serration. Furthermore, the material receiving member may include a material receiving rack having a second serration at one end connected to the large-diameter gear, the material receiving rack meshing with the large-diameter gear via the second serration. When the trigger member is triggered, the trigger member rotates the small-diameter gear via the trigger rack, causing the large-diameter gear to rotate with the small-diameter gear. The material receiving rack then pulls the material receiving member and the trigger member into motion in the same direction.

[0114] It can be seen that in this embodiment, the meshing transmission method is adopted, which can save space and has a high space utilization rate.

[0115] In some possible implementations, please refer to Figures 3-5 together. The waste removal device also includes a first wiper 1381 and a mounting seat 1382; the mounting seat 1382 is fixedly arranged on the body of the waste removal device 130; the first wiper 1381 is arranged on the side of the mounting seat 1382 facing the print head.

[0116] For example, the first wiper 1381 is a metal cylinder, and the diameter of the first wiper 1381 is greater than or equal to 1 mm and less than 4 mm. Specifically, configuring the first wiper 1381 as a metal member can improve its heat resistance, making it less likely to soften within the sealed cavity, ensuring that the first wiper 1381 can effectively perform the scraping action. Configuring the first wiper 1381 as a cylinder ensures that the first wiper 1381 maintains good contact with the nozzle regardless of the angle at which it is rotated, ensuring that the first wiper 1381 can effectively perform the scraping action. Furthermore, since the diameter of the first wiper 1381 is too large, the pressure angle will be too small and the shear force will be insufficient during the scraping process, resulting in an unclear scraping effect and easy material transfer to the hot bed. Therefore, the diameter range of the first wiper 1381 is set to 1mm-4mm, which increases the shear force of the first wiper 1381 and enables the first wiper 1381 to better complete the scraping action.

[0117] It is understood that mounting base 1382 can be fixed not only to the main body of the waste removal device 130, but also to a 3D printer, allowing the wiping structure to be fixed to the 3D printer. Here, the term "mounting base 1382 being fixed to a 3D printer" should be understood broadly. For example, it can be understood that mounting base 1382 can be fixed to the 3D printer's print platform 120, provided that the wiper can contact the 3D printer's nozzle. Alternatively, mounting base 1382 can be fixed to other components near the 3D printer's print platform 120. In other words, the mounting base 1382 can be fixed in any position. Preferably, the mounting base 1382 is positioned so that the wiping structure is located closer to the material receiving member of the waste removal device 130. This allows the 3D printer to move a shorter distance to reach the wiping structure at the end of the printing process, allowing for convenient and quick nozzle cleaning.

[0118] An exemplary working process of the wiping structure provided by the embodiment of the present disclosure is: when the nozzle of the print head 110 finishes discharging material and a large amount of residual material is formed on the nozzle and needs to be cleaned, the print head 110 is controlled to move to the vicinity of the wiping structure, and the print head 110 is controlled to move back and forth between two opposite directions, so that the nozzle of the print head 110 is repeatedly rubbed against the first wiping member 1381, and the first wiping member 1381 can wipe off the waste material on the nozzle, thereby achieving cleaning of the nozzle.

[0119] It can be seen that in this embodiment, when the metal first wiper 1381 is used to wipe the nozzle, it is easier to wipe off the waste on the nozzle, thereby improving the wiping efficiency. Moreover, the metal part is heat-resistant and wear-resistant and does not need to be replaced frequently, thereby improving the durability of the wiping structure and thus helping to reduce maintenance costs.

[0120] In some possible implementations, the waste removal device may include a second wiper 139 fixedly mounted on the body of the waste removal device 130. The second wiper 139 has multiple protrusions on its surface facing the print head. Since the nozzle is generally conical in shape, the second wiper 139 with multiple protrusions on its surface allows the nozzle to move back and forth between the multiple protrusions, thereby wiping away any excess material from the conical side.

[0121] Optionally, the second wiping member includes a silicone wiping member. It is understandable that the second wiping member 139 can also include a wiping member made of other materials, such as a wool brush, a rubber wiping member, etc., which is not limited here.

[0122] In a specific implementation, a second wiper 139 made of silicone is provided on the main body of the waste removing device 130. Since the second wiper 139 is provided with multiple protrusions, it is equivalent to a silicone soft brush. When the print head 110 passes through the second wiper 139 and the nozzle contacts the second wiper 139, the nozzle can be cleaned by the multiple protrusions to improve the cleaning effect of the nozzle.

[0123] It is understood that the first wiper 1381 and the second wiper 139 may be present at the same time, or only one of them may be provided, and this is not limited here. For example, the first wiper 1381 can mainly scrape off waste material from the conical tip of the nozzle, and the second wiper 139 can mainly scrape off waste material from the conical side of the nozzle.

[0124] The following describes a case where the first wiper 1381 and the second wiper 139 exist at the same time.

[0125] In some possible embodiments, the waste removal device further includes a silicone wiper, which is fixedly mounted on the body of the waste removal device 130; the first wiper 1381, the silicone wiper and the opening are located on the same side of the body of the waste removal device 130, and the first wiper 1381 is located between the silicone wiper and the opening.

[0126] In a specific implementation, a first wiper 1381 and a silicone wiper are simultaneously provided on one side of the body of the waste removal device 130, and the opening of the channel is also provided on this side. This allows the nozzle to be wiped nearby when the nozzle finishes discharging material, thereby improving the efficiency of waste removal. Furthermore, the first wiper 1381 is positioned between the silicone wiper and the opening. When the nozzle finishes discharging material, it can sequentially contact the first wiper 1381 and the silicone wiper, performing multiple cleaning operations to improve the nozzle cleaning effect.

[0127] The waste removal device described above in conjunction with Figures 1 to 5 can be used in 3D printers of any structural type, and is particularly suitable for 3D printers with a closed cavity, such as 3D printers with CoreXY, CoreXZ, CoreYZ, CoreYX, CoreZY, CoreZX and other structures.

[0128] In some feasible embodiments, please refer to Figures 6 and 7. This application also provides a waste removal device 130 for a 3D printer, and the waste removal device 130 includes a trigger member 131, a pushing member 1310 and a receiving member 132; wherein the trigger member 131 is slidably connected or rotationally connected to the body of the waste removal device 130; the trigger member 131 is linked to the pushing member 1310; the receiving member 132 is fixedly arranged on the body of the waste removal device 130, and the pushing member 1310 is located on the side of the receiving member 132 facing the print head.

[0129] In a specific implementation, the 3D printer has a nozzle, and a groove 1321 is provided on the body of the material receiving member 132 corresponding to the nozzle. During the movement of the print head, the printing material is deposited on the 3D printing platform through the nozzle. The trigger member 131 is set within the moving range of the print head. When it is necessary to clear the waste material in the nozzle of the print head, the print head moves to the top of the groove 1321 of the material receiving member 132 and spits the waste material from the nozzle into the groove 1321; after spewing out the waste material, the print head moves to the trigger member 131 and contacts the trigger member 131 to apply a certain pressure to the trigger member 131, so that the trigger member 131 is triggered by the print head, and then the material pushing member 1310 is pulled to discharge the waste material on the material receiving member 132 out of the 3D printer.

[0130] The pusher 1310 and the receiving member 132 are plate-shaped, and the plane of the pusher 1310 forms an angle greater than 0° and less than 180° with the plane of the receiving member 132. In other words, the pusher 1310 and the receiving member 132 cannot be arranged parallel to each other; a certain angle is required to enable the pusher 1310 to push away waste material from the receiving member 132. Preferably, the angle between the pusher 1310 and the receiving member 132 can be set to 90°, which allows the pusher 1310 and the receiving member 132 to be perpendicular, thereby improving material pushing. Optionally, the distance between the side of the pushing member 1310 close to the material receiving member 132 and the material receiving member 132 is greater than 0.5 mm but less than 1 cm. The pushing member 1310 is located above the material receiving member 132. If the distance between the side of the pushing member 1310 close to the material receiving member 132 and the material receiving member 132 is greater than 0.5 mm, interference between the pushing member 1310 and the material receiving member 132 can be avoided during the movement of the pushing member 1310 over the material receiving member 132. The distance between the side of the pushing member 1310 close to the material receiving member 132 and the material receiving member 132 is less than 1 cm, so that the side of the pushing member 1310 close to the material receiving member 132 is relatively close to the material receiving member 132, and more waste materials can be pushed with less force. The side of the pusher 1310 away from the material receiving member 132 is lower than the height of the print head, ensuring that the pusher 1310 scrapes away excess material from the nozzle tip during the resetting process. At this time, the side of the pusher 1310 closer to the print head is lower than the height of the print head, ensuring that the pusher 1310 does not scrape the nozzle body. It can be seen that in this embodiment, during the waste material removal process, the print head controls the nozzle to automatically eject material, and the print head causes the trigger 131 to perform waste material removal. This eliminates the need for user intervention, resulting in a high degree of automation and high cleaning efficiency, thereby improving the operating efficiency of the 3D printer.

[0131] In some possible implementations, please continue to refer to Figures 6 and 7. The waste removal device 130 further includes an elastic member 135. One side of the elastic member 135 is connected to the trigger member 131 or the pusher 1310, and the other side of the elastic member 135 is fixed.

[0132] For example, the elastic member 135 can be a spring, rubber, etc., which is not limited here.

[0133] In a specific implementation, the elastic member 135 can be fixedly mounted on the body of the waste material removal device 130, or on other components of the 3D printer, as long as it can achieve the reset of the trigger member 131 and / or the material receiving member 132. When the trigger member 131 is triggered, the elastic member 135 is stretched as the trigger member 131 or the material receiving member 132 moves. When the print head separates from the trigger member 131, the elastic member 135 rebounds and resets, pulling the trigger member 131 and the material receiving member 132 back into position.

[0134] In some possible implementations, please continue to refer to Figures 6 and 7. The elastic member 135 can be replaced by a magnetic member to achieve the reset of the trigger member 131 and the material receiving member 132; when replaced by a magnetic member, the trigger member 131 includes a metal part, which can be integrally formed with the trigger member 131, or the trigger member 131 body is the metal part, or the metal part and the trigger member 131 body are separated, and the metal part is set on the trigger member 131 body. The magnetic component is arranged in the opposite direction of the movement of the trigger member 131 after being triggered. Specifically, when the trigger member 131 is not triggered, the metal part is attracted to the magnetic component; when the trigger member 131 changes from an untriggered state to a triggered state, the metal part will separate from the magnetic component as the trigger member 131 moves, but it is still within the magnetic range of the magnetic component; and after the print head is separated from the trigger member 131, the trigger member 131 loses pressure, and the metal part is affected by the magnetic force of the magnetic component to drive the trigger member 131 to move toward the magnetic component, and finally the metal part is attracted to the magnetic component, thereby resetting the trigger member 131, and the trigger member 131 pulls the material receiving member 132, thereby resetting the material receiving member 132.

[0135] It is understandable that the magnetic component can be any object that can generate magnetic force, such as an iron-chromium-cobalt magnet, a nepheline magnet, or an electromagnet.

[0136] It can be seen that in this example, the trigger member 131 and the material receiving member 132 are reset by the elastic member 135 or the magnetic member without user intervention, with a high degree of automation and high cleaning efficiency, which can improve the working efficiency of the 3D printer.

[0137] In some possible implementations, please continue to refer to Figures 6 and 7. The trigger member 131 is rod-shaped, and the trigger member 131 has a first end 1311 and a second end 1312, wherein the first portion 1313 of the trigger member 131 is rotatably connected to the body of the waste removal device 130, and the first portion 1313 is the portion of the trigger member 131 located between the first end 1311 and the second end 1312; the first end 1311 of the trigger member 131 is triggered by the 3D printer.

[0138] In a specific implementation, a rotating mechanism is provided on the waste removing device 130, which can be a third through hole and a fourth through hole, or a third groove and a fourth groove; the first part on the trigger member 131 can be a rotating shaft, and both ends of the rotating shaft extend from the main body of the trigger member 131, and the two ends of the rotating shaft respectively cooperate with the third through hole and the fourth through hole, or respectively cooperate with the third groove and the fourth groove, so that the trigger member 131 can rotate in the third through hole and the fourth through hole, or in the third groove and the fourth groove.

[0139] Furthermore, the first end 1311 of the triggering member 131 contacts the 3D printer to apply a certain pressure to the triggering member 131 so that the triggering member 131 is triggered by the print head.

[0140] In some possible implementations, the waste removal device further includes a stroke amplification mechanism; the trigger member 131 is connected to the material receiving member 132 via the stroke amplification mechanism.

[0141] Optionally, the second end 1312 of the trigger member 131 is connected to the pusher 1310; wherein, the distance between the first end 1311 and the first portion 1313 is a first length, and the distance between the second end 1312 and the first portion 1313 is a second length, and the first length is smaller than the second length.

[0142] Specifically, with the rotating shaft as the boundary, the first length is set to be smaller than the second length, so that the length from the first end 1311 triggered by the print head to the first part 1313 is smaller than the length between the second end 1312 and the first part 1313. Since the trigger member 131 makes a circle around the rotating shaft, when the first length is smaller than the second length, the stroke of the connecting member connected to the second end 1312 can be magnified, and the greater the second length, the greater the degree of stroke magnification.

[0143] In some possible implementations, referring to Figures 6 and 7 , the waste removal device further includes a connecting member that connects the second end 1312 of the trigger member 131 to the pusher 1310. The waste removal device further includes an elastic member 135, one side of the elastic member 135 being connected to the connecting member and the other side of the elastic member 135 being fixed.

[0144] In a specific implementation, when the trigger member 131 is triggered, the connecting member is pulled by the trigger member 131 to move, so that the elastic member 135 is stretched. After the print head is separated from the trigger member 131, the elastic member 135 rebounds and resets and pulls the connecting member to reset, and the trigger member 131 and the material receiving member 132 are also pulled and reset by the stroke amplification structure at the same time.

[0145] In some possible implementations, referring to Figures 6 and 7 , the stroke amplification mechanism includes a transmission member 1314; a first end 1311 of the transmission member 1314 is slidably connected to the body of the waste removal device 130; a second end 1312 of the transmission member 1314 is connected to the material pusher 1310; and a trigger member 131 is connected between the first end 1311 and the second end 1312 of the transmission member 1314. Specifically, when the first end 1311 of the trigger member 131 is triggered, the circular motion of the trigger member 131 causes the second end 1312 of the trigger member 131 to push the transmission member 1314 to slide on the body of the waste removal device 130, thereby pushing the material pusher 1310 to push the waste off the material receiving member 132.

[0146] In some possible implementations, the stroke amplification mechanism includes two gears with different diameters, the triggering member 131 is connected to the small-diameter gear, and the material receiving member 132 is connected to the large-diameter gear.

[0147] For example, the large-diameter gear and the small-diameter gear may be integrated stepped gears or assembled discrete gears, which is not limited here.

[0148] In a specific implementation, trigger member 131 may include a trigger rack having a first serration at one end connected to the small-diameter gear, with the trigger rack meshing with the small-diameter gear via the first serration. Furthermore, material receiving member 132 may include a material receiving rack having a second serration at one end connected to the large-diameter gear, with the material receiving rack meshing with the large-diameter gear via the second serration. When trigger member 131 is triggered, trigger member 131 rotates the small-diameter gear via the trigger rack, causing the large direct gear to rotate with the small-diameter gear. The material receiving rack then pulls material receiving member 132 and trigger member 131 into motion in the same direction.

[0149] It can be seen that in this embodiment, the meshing transmission method is adopted, which can save space and has a high space utilization rate.

[0150] In some possible implementations, please continue to refer to FIG. 6 and FIG. 7 , a silicone wiper 1391 is further included, and the silicone wiper 1391 is rotatably connected to the body of the waste removal device 130 .

[0151] The silicone wiper 1391 is a cylindrical column with a plurality of protrusions on its surface.

[0152] It is understandable that the silicone wiper 1391 may also include wipers made of other materials, such as a wool brush, a rubber wiper, etc., which is not limited here.

[0153] In a specific implementation, a silicone wiper 1391 is provided on the main body of the waste removing device 130. Since a plurality of protrusions are provided on the silicone wiper 1391, it is equivalent to a silicone soft brush. When the print head passes through the second wiper, the nozzle can be cleaned by the plurality of protrusions when the nozzle contacts the second wiper, thereby improving the cleaning effect of the nozzle.

[0154] Referring to FIG8 , FIG8 is a schematic diagram illustrating another application scenario of the 3D printer provided in an embodiment of the present application. As shown in FIG8 , a 3D printer 102 is connected to a feeding device 101 .

[0155] The feeding device 101 can suspend a material tray with consumables wound around it. The feeding device 101 can provide the consumables to the 3D printer 102, or the consumables can be rewound back to the material tray through the feeding device 101. In other words, the feeding device 101 can both feed and withdraw materials.

[0156] The 3D printer 102 includes a print head 1021. The print head 1021 includes a nozzle 10212. During the feeding process of the feeding device 101, the consumable material is supplied to the nozzle 10212. During the unloading process of the feeding device 101, the 3D printer 102 cuts the consumable material in the print head 1021 and delivers the consumable material to the feeding device 101.

[0157] The 3D printer 102 further includes a motor 1022 , and the print head 1021 is slidably connected to a first guide rail 1026 . The motor 1022 can drive the print head 1021 to move along the first guide rail 1026 .

[0158] The 3D printer 102 also includes a waste removal device 1020, which is fixed to the side of the first guide rail 1026 away from the motor 1022. Driven by the motor 1022, the print head 1021 can move into contact with the waste removal device 1020 and then discharge residual consumables into the waste removal device 1020. The waste removal device 1020 can collect and remove the residual consumables.

[0159] This application adds a waste removal device to the 3D printer. In the process of cleaning the residual consumables spit out by the nozzle, no user intervention is required, the degree of automation is high, and the cleaning efficiency is high.

[0160] The structure of the waste removal device will be described in detail below with reference to FIG. 9 to FIG. 12 .

[0161] Please refer to Figures 9 to 11. Figure 9 is a structural schematic diagram of the waste removal device provided in an embodiment of the present application. Figure 10 is an internal structural schematic diagram of the waste removal device shown in Figure 9. Figure 11 is another internal structural schematic diagram of the waste removal device shown in Figure 9. Figure 12 is another structural schematic diagram of the waste removal device provided in an embodiment of the present application.

[0162] The waste material removal device includes a triggering member, a material receiving member 204 , a material pushing member, a transmission member 303 and an elastic member 304 .

[0163] As shown in Figure 10, one end of the transmission member 303 is connected to one end of the trigger member, and the other end of the trigger member is connected to the print head of the 3D printer. Exemplarily, the transmission member 303 can be a gear or a synchronous belt.

[0164] In some feasible embodiments, the trigger member includes a trigger rack 202b. For example, if the transmission member 303 is specifically implemented as a gear, the trigger rack 202b has serrations at one end connected to the gear, and the serrations of the trigger rack 202b mesh with the gear for transmission. The present application adopts a meshing transmission method, which can save space and improve space utilization.

[0165] Optionally, the trigger rack 202b is provided with a first groove, and the housing of the waste removal device is provided with a first track 3051 corresponding to the first groove. The first groove is slidably connected to the first track 3051. The trigger rack 202b can then move along the first track 3051. For example, the first track 3051 and the housing of the waste removal device can be integrally formed. This allows the trigger rack to move within the housing without increasing costs, resulting in low costs.

[0166] Furthermore, in some feasible embodiments, the trigger member further includes a protrusion 202a. The protrusion 202a is the other end of the trigger member, and the contact between the other end of the trigger member and the print head specifically refers to the protrusion 202a being used to contact the print head. The protrusion 202a is positioned protrudingly in the first movable hole of the waste removal device, meaning that the protrusion 202a can move within the first movable hole under contact and propulsion by the print head. Optionally, the trigger rack 202b and the protrusion 202a can be integrally formed. When the protrusion 202a moves within the first movable hole of the waste removal device, it drives the trigger rack 202b to move along the first track 3051.

[0167] In some feasible embodiments, the pusher includes a pusher rack 203b, and the pusher rack 203b is provided with serrations at one end connected to the gear, and the serrations of the pusher rack 203b mesh with the gear for transmission. Exemplarily, the other end of the transmission member 303 is connected to one end of the pusher, specifically the other end of the transmission member 303 is connected to one end of the pusher rack 203b. The present application adopts a meshing transmission method, which can save space and has a high space utilization rate. The present application adopts a meshing transmission method, which can save space and has a high space utilization rate.

[0168] Optionally, the other end of the pusher member is connected to one end of the elastic member 304. Specifically, the other end of the pusher rack 203b is connected to one end of the elastic member 304. Exemplarily, the pusher rack 203b has a second groove and a fixing post in the second groove. The second groove accommodates the elastic member 304, and one end of the elastic member 304 is connected to the fixing post. In a specific implementation, the elastic member 304 may be a spring or a torsion spring. For example, when the pusher rack 203b moves toward the side with the fixing post, the elastic member 304 is in the stretched state shown in Figure 11.

[0169] Optionally, in some feasible embodiments, the pusher rack 203b is provided with a third groove, and the housing of the waste removal device is provided with a second track 3052 corresponding to the third groove. The third groove is slidably connected to the second track 3052, allowing the pusher rack 203b to move along the second track 3052. Optionally, the pusher rack 203b and the second track 3052 can be integrally formed. This allows the pusher rack to move within the housing without increasing costs, resulting in low costs.

[0170] Furthermore, in some feasible embodiments, the pusher member further includes a pusher plate 203a. A connecting block is provided on the pusher rack 203b, located in the second movable hole 3062 of the waste removal device, and connected to the pusher plate 203a. Thus, when the pusher rack 203b moves along the second track 3052, the connecting block can drive the pusher plate 203a to move. When the elastic member 304 shown in FIG. 11 is in the stretched state, the pusher plate 203a moves from the first position shown in FIG. 9 to the second position shown in FIG. 12.

[0171] Optionally, the material receiving member 204 is fixedly connected to the side of the housing 201 near the second movable hole 3062. At this time, the material receiving member 204 is used to receive the waste material spitted out by the nozzle.

[0172] The other end of the elastic member 304 is connected to the housing 201 of the waste removal device. The transmission member 303 and the elastic member 304 can be arranged inside the housing 201.

[0173] The portion of the material pushing member located outside the housing 201 of the waste material removing device (ie, the material pushing plate 203 a ) is on the side of the material receiving member 204 facing the print head.

[0174] In the present application, when the print head contacts the trigger member and continues to push the trigger member, the transmission member 303 rotates, at which point the transmission member 303 can drive the pusher to move, causing the pusher to move from the first position to the second position. For example, a waste removal device can be provided in the direction of travel of the print head on the first guide rail. The print head moves along the first guide rail toward the waste removal device. After contacting the protrusion 202a, the print head continues to move, pushing the protrusion 202a to move within the first moving hole. At this time, the transmission member 303 rotates, which can drive the pusher rack 203b in the pusher to move within the second moving hole. Since the pusher plate 203a is connected to the pusher rack 203b, the pusher plate 203a can move from the first position shown in FIG. 9 to the second position shown in FIG. 12. At this point, the elastic member 304 is in a stretched state, and the nozzle begins to spit out waste material.

[0175] After the nozzle has finished discharging waste material, the discharged waste material falls onto the material receiving member 204. At this time, the print head moves along the first track toward the motor side, away from the protrusion 202a, and the elastic member 304 returns to its natural state. The elastic member drives the material pushing rack 203b to move, thereby driving the material pushing plate 203a to retreat from the second position to the first position. The material pushing plate 203a sweeps over the material receiving member 204, removing the waste material from the 3D printer from the material receiving member 204. For example, when the print head is separated from the trigger member, the transmission member 303 no longer applies force to the material pushing plate 203a, and the elastic member 304 drives the material pushing plate 203a to return from the second position to the first position. During the reset process of the material pushing plate 203a, the waste material on the material receiving member 204 can be removed.

[0176] Of course, the above examples are only for illustration, and those skilled in the art can use any method to drive the trigger member to drive the push plate, for example, manually or by using other components of the 3D printer to abut against it. This is not limited in the embodiments of the present application.

[0177] The waste removal device of the embodiment of the present application can prevent the waste from falling onto the printing panel when the print head discharges the waste, and can automatically remove the waste remaining on the material receiving member 204, thereby improving the working efficiency of the 3D printer.

[0178] In some feasible embodiments, the waste removal device further includes a hanging arm 205, wherein the plane of the hanging arm 205 forms a predetermined angle with the plane of the housing 201; wherein the hanging arm 205 is fixedly connected to a profile provided with a guide rail in the 3D printer. For example, the hanging arm 205 and the housing 201 can be integrally formed.

[0179] Optionally, a motor may be provided at one end of the first guide rail of the 3D printer, and the hanging arm 205 may be detachably connected to an end of the first guide rail away from the motor.

[0180] By implementing the embodiments of the present application, it is possible to achieve that when the trigger member contacts the print head, the push plate is driven to move by the print head, thereby clearing the waste material on the material receiving member 204. Furthermore, by accommodating the transmission member and the elastic member into the interior of the shell, the transmission member and the elastic member can be effectively protected, thereby further improving the stability of the waste material removing device.

[0181] Optionally, the material receiving member 204 can be detachably connected to the side of the housing 201 by fixing screws, so that the material receiving member 204 can be detachable from the waste removal device.

[0182] The following describes the status of the waste removal device provided in the embodiment of the present application with reference to Figures 13a to 13c.

[0183] Please refer to Figures 13a-13c, which illustrate the waste removal device according to an embodiment of the present application. As shown in Figure 13a, as the print head 610 moves along the first guide rail away from the motor 611, it gradually approaches the bump 202a. The body of the print head 610 contacts the bump 202a, and the push plate 203a is in the first position.

[0184] The print head 610 continues to move along the first guide rail away from the side of the motor 611 , and the print head 610 pushes the protrusion 202 a to move, and the push plate 203 a is in the second position as shown in FIG. 13 b . At this time, the nozzle 6101 starts to spit out waste material 612 , and the waste material 612 falls on the material receiving piece 204 .

[0185] After the nozzle has spitted out all the waste material, the print head 610 moves along the side of the first guide rail close to the motor 611, the print head 610 separates from the protrusion 202a, and the push plate 203a returns to the first position shown in Figure 8 under the drive of the elastic member. At this time, the push plate 203a can sweep the waste material 612 from the material receiving part 204 as shown in Figure 13c.

[0186] In this application, a waste removal device is added to the 3D printer, which does not require user intervention, has a high degree of automation, and has high removal efficiency.

[0187] It should be noted that the above terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

Claims

1. A waste removal device for a 3D printer, characterized in that: The waste material removal device is arranged in a 3D printer, and the 3D printer has a cavity surrounded by a shell, wherein the shell is provided with a passage from the cavity to the outside of the cavity; The waste material removal device is arranged in the cavity, and the waste material removal device comprises a triggering member and a material receiving member; wherein, The trigger member is slidably connected to the body of the waste removal device; The material receiving member is linked to the trigger member, and when the trigger member is not triggered, the material receiving member covers the opening of the channel toward the cavity.

2. The waste removal device according to claim 1, characterized in that: The surface area of ​​the material receiving piece is equal to or greater than the surface area of ​​the opening.

3. The waste removal device according to claim 1, characterized in that: It also includes an elastic member, one side of which is connected to the trigger member or the material receiving member, and the other side of which is fixedly arranged.

4. The waste removal device according to claim 1, characterized in that: Also includes a magnetic component; wherein the triggering member includes metal; The magnetic component is arranged on the print head of the 3D printer or the housing of the 3D printer.

5. The waste removal device according to any one of claims 1 to 4, characterized in that: It also includes a stroke amplification mechanism; the trigger member is connected to the material receiving member through the stroke amplification mechanism.

6. The waste removal device according to claim 5, characterized in that: The waste removing device also includes an elastic member, one side of which is connected to the stroke amplification structure, and the other side of which is fixedly arranged.

7. The waste removal device according to claim 5, characterized in that: The stroke amplification mechanism includes a transmission rod; the first end of the transmission rod is rotatably connected to the body of the waste removing device, the second end of the transmission rod is connected to the material receiving member, and the trigger member is connected between the first end and the second end of the transmission rod.

8. The waste removal device according to claim 5, characterized in that: The stroke amplification mechanism comprises two gears with different diameters, the triggering member is connected to the gear with a smaller diameter, and the material receiving member is connected to the gear with a larger diameter.

9. The waste removal device according to any one of claims 1 to 8, characterized in that: The waste material removal device also includes a first wiping member and a mounting seat; The mounting seat is fixedly arranged on the body of the waste removal device; The first wiping member is arranged on a side of the mounting base facing the print head.

10. The waste removal device according to claim 9, characterized in that: The first wiping member comprises a metal cylinder, and a diameter of the first wiping member is greater than or equal to 1 mm and less than 4 mm.

11. The waste removal device according to any one of claims 1 to 8, characterized in that: Also includes: The second wiping piece is rotatably connected to the body of the waste removing device, and the surface of the second wiping piece has a plurality of protrusions.

12. The waste removal device according to claim 11, characterized in that: The second wiper comprises a silicone wiper.

13. The waste removal device according to claim 9, characterized in that: The waste material removal device further comprises a silicone wiper, and the silicone wiper is fixedly arranged on the body of the waste material removal device; The first wiping piece, the silicone wiping piece and the opening are located on the same side of the body of the waste material removing device, and the first wiping piece is located between the silicone wiping piece and the opening.

14. The waste removal device according to claim 1, characterized in that: The surface area of ​​the opening is larger than the cross-sectional area of ​​the waste material generated by the 3D printer.

15. The waste removal device according to claim 1, characterized in that: The waste material removing device also includes an upper cover provided with a blocking portion in the direction of movement of the material receiving member along the direction of movement of the material receiving member to expose the opening, and the plane where the material receiving member is located is lower than the lowest point of the blocking portion.

16. The waste removal device according to claim 1, characterized in that: The 3D printer has a nozzle, and a groove is arranged on the body of the material receiving member corresponding to the nozzle.

17. A waste removal device for a 3D printer, characterized in that: The waste material removal device comprises a triggering member, a material pushing member and a material receiving member; wherein, The triggering member is slidably connected or rotationally connected to the body of the waste removal device; The triggering member is linked to the pushing member; The material receiving member is fixedly arranged on the main body of the waste material removing device, and the material pushing member is located at a side of the material receiving member facing the print head.

18. The waste removal device according to claim 17, characterized in that The material pushing member and the material receiving member are plate-shaped, and the plane where the material pushing member is located and the plane where the material receiving member is located form an angle greater than 0° and less than 180°.

19. The waste removal device according to claim 18, characterized in that The distance between the side of the material pushing member close to the material receiving member and the material receiving member is greater than 0.5 mm but less than 1 cm, and the side of the material pushing member away from the material receiving member is lower than the height of the print head.

20. The waste removal device according to claim 17 or 18, characterized in that It also includes an elastic member, one side of which is connected to the trigger member or the pusher member, and the other side of which is fixedly arranged.

21. The waste removal device according to claim 17 or 18, characterized in that Also includes a magnetic component; wherein the triggering member includes metal; The magnetic component is arranged on the print head of the 3D printer or the housing of the 3D printer.

22. The waste removal device according to claim 17 or 18, characterized in that The trigger member is in the shape of a rod, and has a first end and a second end, wherein a first portion of the trigger member is rotatably connected to the body of the waste removal device, and the first portion is a portion of the trigger member located between the first end and the second end; The first end of the trigger member is triggered by the 3D printer.

23. The waste removal device according to claim 22, characterized in that The second end of the trigger member is connected to the material pushing member; The distance between the first end and the first portion is a first length, the distance between the second end and the first portion is a second length, and the first length is smaller than the second length.

24. The waste removal device according to claim 23, characterized in that The waste material removal device further comprises a connecting member, wherein the connecting member connects the second end of the trigger member to the material pushing member; It also includes an elastic member, one side of which is connected to the connecting member, and the other side of which is fixedly arranged.

25. The waste removal device according to claim 17, characterized in that: It also includes two gears with different diameters, the triggering member is connected to the gear with a smaller diameter, and the material receiving member is connected to the gear with a larger diameter.

26. The waste removal device according to claim 17, characterized in that It also includes a second wiping piece, which is rotatably connected to the body of the waste removing device, and the surface of the second wiping piece has a plurality of protrusions.

27. The waste removal device according to claim 26, characterized in that The second wiping member further comprises a silicone wiping member.

28. The waste removal device according to claim 17, characterized in that: The printing head has a nozzle, and a groove is arranged on the body of the material receiving member corresponding to the nozzle.

29. A 3D printer, characterized in that: The 3D printer comprises a closed cavity surrounded by a shell, and a waste removal device as described in any one of claims 1 to 16; Alternatively, the 3D printer comprises a print head and a waste removal device as described in any one of claims 17-28.

Images