Fuse cutting device and 3D printer

Abstract

The application provides a fuse cutting device and a 3D printer, and belongs to the technical field of 3D printing. The fuse cutting device comprises a cutter assembly and a driving assembly. The cutter assembly is used for cutting the fuse. The driving assembly is connected with the cutter assembly and is used for driving the cutter assembly to move between a first position and a second position. The cutter assembly cuts the fuse when being at the first position, and the cutter assembly has no contact with the fuse when being at the second position. The driving assembly comprises a driving piece, a transmission assembly, a transmission output shaft and a pushing piece. The driving piece drives the pushing piece to move through the transmission assembly and the transmission output shaft in sequence. The pushing piece is used for driving the cutter assembly to move from the second position to the first position under the driving of the driving piece. The axis of the output shaft of the driving piece is perpendicular to the axis of the transmission output shaft. The fuse cutting device provided by the application can improve the accuracy, stability and cutting quality of the cutting position of consumables.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and in particular to a filament cutting device and a 3D printer. Background Technology

[0002] Currently, in thermoplastic filament continuous 3D printing equipment, accurate cutting of the filament due to its flexibility and continuous feeding characteristics presents a significant technical challenge. Existing cutting mechanisms suffer from issues such as easy deviation in cutting position and poor cutting stability, which affect the quality and stability of 3D printed products. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a filament cutting device and a 3D printer.

[0004] In a first aspect, this application provides a fuse cutting device, comprising: The cutter assembly is used to cut the fuse. A drive assembly connected to the cutter assembly is used to drive the cutter assembly to move between a first position and a second position. When the cutter assembly is in the first position, it cuts the fuse. When the cutter assembly is in the second position, it has no contact with the fuse. The drive assembly includes a drive member, a transmission assembly, a transmission output shaft, and a pusher. The drive member drives the pusher to move sequentially through the transmission assembly and the transmission output shaft. The pusher is used to push the cutter assembly from the second position to the first position under the drive of the drive member. The axis of the output shaft of the drive unit is perpendicular to the axis of the transmission output shaft.

[0005] In some embodiments, the transmission assembly includes a first transmission member and a second transmission member. The first transmission member is fixedly connected to the output shaft of the drive member, and the first transmission member and the second transmission member are convectively connected. The rotation axis of the first transmission member is perpendicular to the rotation axis of the second transmission member. The axis of the transmission output shaft is parallel to or coincides with the rotation axis of the second transmission member.

[0006] In some embodiments, one end of the transmission output shaft is fixedly connected to the second transmission member, and the other end of the transmission output shaft is fixedly connected to the push member; The pusher is a cam, and the periphery of the cam abuts against the cutter assembly.

[0007] In some embodiments, the cutter assembly includes a cutter, a slider, a sliding portion, and a supporting roller. The cutter, the sliding portion, and the supporting roller are all disposed on the slider, and the supporting roller abuts against the pusher. The fuse cutting device further includes a guide assembly for limiting the movement trajectory of the cutter assembly. The guide assembly includes a guide support frame, in which a guide slide is provided. The sliding part rolls or slides with the guide slide, causing the slider to move along the direction defined by the guide slide.

[0008] In some embodiments, the guide support frame has a first mounting space on the side facing the transmission output shaft, and a second mounting space on the other side away from the transmission output shaft; The transmission output shaft is rotatably mounted in the first mounting space, and the guide slide is disposed in the second mounting space; The first mounting space includes a first mounting groove disposed on the side of the guide support frame facing the second transmission member, a second mounting groove disposed on the side of the guide support frame facing the push member, and a through hole connecting the first mounting groove and the second mounting groove; The transmission output shaft passes through the first mounting groove, the through hole, and the second mounting groove; The first mounting groove is provided with a first bearing, which is sleeved on the transmission output shaft; the second mounting groove is provided with a second bearing, which is sleeved on the transmission output shaft. The transmission output shaft is fitted with a third bearing, which is located at one end of the transmission output shaft away from the pusher.

[0009] In some embodiments, a reset component is further included for resetting the cutter assembly to the second position; The reset assembly includes an elastic reset member, one end of which is fixedly connected to the cutter assembly, and the other end of which is fixedly connected to the transmission output shaft or guide support frame.

[0010] In some embodiments, the cutter assembly includes a first fixed shaft and a second fixed shaft respectively passing through the slider; the abutment roller is fixed to the slider via the first fixed shaft; the cutter is fixed to the slider via the second fixed shaft; and the sliding portion is fixed to the slider via at least one of the first fixed shaft and the second fixed shaft.

[0011] In some embodiments, the transmission output shaft protrudes at least partially from the pusher, the second fixed shaft protrudes at least partially from the slider, and the transmission output shaft and the second fixed shaft are connected by the elastic reset member.

[0012] In some embodiments, the guide support frame has a support member on the side opposite to the cutter for providing support to the guide support frame.

[0013] Secondly, this application provides a 3D printer, including a nozzle and the aforementioned filament cutting device, wherein the nozzle is disposed on the side of the cutter away from the pusher; When the cutter assembly is in the first position, the cutter cuts the molten wire entering the feed end of the nozzle.

[0014] The embodiments of this application have the following advantages: The output shaft of the drive component is connected to the transmission assembly, and the transmission assembly is connected to the transmission output shaft. This allows the output shaft of the drive component to rotate, driving the transmission assembly, which in turn drives the transmission output shaft. The transmission assembly and transmission output shaft then drive the pusher component, which in turn pushes the cutter assembly between a first position and a second position. This ensures that the cutter assembly cuts the fuse when it reaches the first position, and there is no contact between the cutter assembly and the fuse when it reaches the second position. This improves the accuracy of the fuse cutting position, as well as the cutting efficiency and stability, and ultimately enhances the quality of the fuse cutting. Furthermore, due to the limited space in the effector, this application sets the axis of the drive component's output shaft perpendicular to the axis of the transmission output shaft. This not only reduces the space occupied and increases the compactness of the structure, improving space utilization, but also provides a more stable, smoother, and quieter driving method compared to direct drive.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This illustration shows a schematic diagram of the structure of a fuse cutting device according to some embodiments of this application; Figure 2 This invention provides a schematic diagram of the structure of a fuse cutting device from another perspective, based on some embodiments of the present application. Figure 3 It shows Figure 2 A cross-sectional view of one embodiment of the middle AA section; Figure 4 It shows Figure 2 A cross-sectional view of another embodiment of the middle AA section.

[0018] Explanation of key component symbols: 100-Cutter assembly; 110-Cutter; 120-Slider; 130-Sliding part; 140-Holding roller; 150-First fixed shaft; 160-Second fixed shaft; 200-Drive assembly; 210-Driver; 220-Transmission assembly; 221-First transmission component; 222-Second transmission component; 230-Transmission output shaft; 240-Push component; 300-Guide assembly; 310-Guide support frame; 311-First mounting space; 312-Second mounting space; 313-First mounting groove; 314-Second mounting groove; 315-Through hole; 320-Guide slide; 400-Third bearing; 500-First bearing; 600-Second bearing; 700-Reset assembly; 710-Elastic reset component; 800-Support component; 900-Support platform; 1000-Nozzle. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] like Figures 1 to 4 As shown, some embodiments of this application provide a filament cutting device for use in 3D printers to improve the accuracy and stability of filament cutting.

[0025] The fuse cutting device includes a cutter assembly 100 and a drive assembly 200.

[0026] The cutter assembly 100 is used to cut the fuse. It can be understood that the cutter assembly is driven by the drive assembly 200 to move and cut the fuse.

[0027] In this embodiment, the driving component 200 is connected to the cutting component 100. The driving component 200 is used to drive the cutting component 100 to move between a first position and a second position. The cutting component 100 cuts the fuse when it is in the first position. It can be understood that when the driving component 200 drives the cutting component 100 to move from the second position to the first position, the cutting component 100 is able to cut the fuse when it is in the first position.

[0028] In addition, when the cutter assembly 100 is in the second position, it is not in contact with the fuse to ensure the normal flow of the fuse.

[0029] In this embodiment, the drive assembly 200 includes a drive member 210, a transmission assembly 220, a transmission output shaft 230, and a pusher member 240. The drive member 210 drives the pusher member 240 to move sequentially through the transmission assembly 220 and the transmission output shaft 230. That is, when the drive member 210 is running, it can drive the transmission assembly 220 to move, and through the transmission assembly 220, it drives the pusher member 240 to move through the transmission output shaft 230.

[0030] Additionally, the pusher 240 abuts against the cutter assembly 100, and the pusher 240 is used to push the cutter assembly 100 from the second position to the first position under the drive of the drive member 210.

[0031] In this embodiment, the axis of the output shaft of the drive member 210 is perpendicular to the axis of the transmission output shaft 230. The output shaft of the drive member 210 is connected to the transmission assembly 220, which is connected to the transmission output shaft 230. This allows the output shaft of the drive member 210 to rotate, thereby driving the transmission assembly 220 to move. The transmission assembly 220 then drives the transmission output shaft 230 to move, and the transmission assembly 220 and the transmission output shaft 230 together drive the pusher 240 to move. The pusher 240 then pushes the cutter assembly 100 to move between a first position and a second position. This ensures that the cutter assembly 100 cuts the fuse when it reaches the first position, and does not contact the fuse when it reaches the second position. This improves the accuracy of the fuse cutting position, as well as the cutting efficiency and stability, and enhances the quality of the fuse cutting.

[0032] like Figure 2 As shown, in some embodiments of this application, the transmission assembly 220 includes a first transmission member 221 and a second transmission member 222. The first transmission member 221 is fixedly connected to the output shaft of the drive member 210, so that the first transmission member 221 moves synchronously during the movement of the output shaft of the drive member 210. The first transmission member 221 and the second transmission member 222 are connected by a transmission link, and the rotation axis of the first transmission member 221 is perpendicular to the rotation axis of the second transmission member 222. It can be understood that during the movement of the first transmission member 221 under the drive of the output shaft of the drive member 210, the second transmission member 222 can be driven to move via the first transmission member 221.

[0033] For example, in some embodiments, the first transmission component 221 is a worm gear fixedly connected to the output shaft of the drive component 210, and the second transmission component 222 is a worm wheel that drives the worm gear. The transmission mechanism with worm gear and worm wheel has a large transmission ratio, compact structure, small size, smooth transmission, and low noise. In addition, the worm gear and worm wheel have reverse stroke self-locking property, that is, the worm gear can only drive the worm wheel, and the worm wheel cannot drive the worm gear, which improves the stability of the fuse cutting device.

[0034] The first transmission component 221 and the second transmission component 222 in this embodiment are not limited to the transmission mechanism of worm and worm wheel, but can also be bevel gears. The first transmission component 221 and the second transmission component 222 are both bevel gears, and the bevel teeth mesh with each other to achieve stable power transmission and reduce the vertical space (i.e., height) of the installation configuration.

[0035] Furthermore, the axis of the transmission output shaft 230 is parallel to or coincides with the rotation axis of the second transmission member 222. In some embodiments, the axis of the transmission output shaft 230 coincides with the rotation axis of the second transmission member 222, meaning that the second transmission member 222 can drive the transmission output shaft 230 to move coaxially and synchronously during its movement. In other embodiments, the axis of the transmission output shaft 230 is parallel to the rotation axis of the second transmission member 222, meaning that the second transmission member 222 can drive the transmission output shaft 230 to rotate about the axis of the second transmission member 222 during its movement.

[0036] like Figure 2 and Figure 3 As shown, in some embodiments of this application, one end of the transmission output shaft 230 is fixedly connected to the second transmission member 222, and the other end of the transmission output shaft 230 is fixedly connected to the push member 240, so that the second transmission member 222 can drive the transmission output shaft 230 to move synchronously during the movement driven by the first transmission member 221, and the transmission output shaft 230 can drive the push member 240 to move synchronously during the movement.

[0037] It should be noted that the fixed connection described in this embodiment includes at least one of spline fixed connection, interference fit fixed connection, mating end face fixed connection, mating plane fixed connection or welding, so as to ensure the stability of the connection between the transmission output shaft 230 and the second transmission component 222, and the stability of the connection between the transmission output shaft 230 and the pusher component 240.

[0038] In this embodiment, the pusher 240 is a cam, and the periphery of the cam abuts against the cutter assembly 100. It is understood that the pusher 240 is fixedly connected to the transmission output shaft 230, meaning that the transmission output shaft 230 can drive the pusher 240 to rotate synchronously during rotation. Since the pusher 240 is a cam, and the periphery of the cam abuts against the cutter assembly 100, the cutter assembly 100 is always in contact with the periphery of the cam during rotation. Because the periphery of the cam is a smooth curved surface, the cam can push the cutter assembly 100 to move between a first position and a second position during rotation. At this time, the first position is the position where the rotation axis (i.e., the transmission output shaft 230) of the cutter assembly 100 and the pusher 240 is furthest apart, and the second position is the position where the rotation axis (i.e., the transmission output shaft 230) of the cutter assembly 100 and the pusher 240 is closest together.

[0039] like Figures 2 to 4 As shown, in some embodiments of this application, the cutter assembly 100 includes a cutter 110, a slider 120, a sliding portion 130, and a retaining roller 140.

[0040] The cutter 110, the sliding part 130, and the supporting roller 140 are all disposed on the slider 120. It is worth noting that the connection method between the cutter 110 and the slider 120 includes at least one of the following: bolt connection, snap-fit, adhesive connection, welding, threaded connection, and welding, to ensure the stability of the connection between the cutter 110 and the slider 120. The sliding part 130 is movably connected to the slider 120, allowing the sliding part 130 to rotate relative to the slider 120. The supporting roller 140 is movably connected to the slider 120, allowing the supporting roller 140 to rotate relative to the slider 120.

[0041] For example, in some embodiments, the sliding part 130 is a pulley, and the guide member 320 is a slide rod. The pulley and the slide rod cooperate to provide guidance and limiting for the pulley through the slide rod, thereby ensuring the smoothness and stability of the pulley sliding along the slide rod. In other embodiments, the sliding part 130 is a slider, and the guide member 320 is a slide rail. The slider and the slide rail are slidably connected to each other to provide guidance and limiting for the slider through the slide rail. In still other embodiments, the guide member 320 is a sliding groove, and the sliding part 130 is at least partially received in the sliding groove to provide limiting for the sliding part 130. The sliding part 130 is also slidably connected to the sliding groove to provide guidance for the sliding part 130 through the sliding groove, thereby ensuring the stability of the sliding part 130 sliding along the sliding groove.

[0042] In this embodiment, the abutting roller 140 abuts against the pushing member 240, so that during the rotation of the pushing member 240, the friction between the periphery of the pushing member 240 and the periphery of the abutting roller 140 can drive the abutting roller 140 to rotate. By movably connecting the abutting roller 140 to the slider 120, not only can the smoothness of the rotation of the abutting roller 140 be ensured, but the resistance of the abutting roller 140 to the pushing member 240 can also be effectively reduced, so as to ensure the stability and smoothness of the pushing member 240 during the rotation.

[0043] The fuse cutting device further includes a guide component 300, which is used to limit the movement trajectory of the cutter component 100. That is, the guide component 300 can limit the movement of the cutter component 100 between a first position and a second position to ensure the stability and smoothness of the cutter component 100 during the movement, ensure the accuracy of the cutter component 100 in cutting the fuse, and improve the cutting efficiency.

[0044] In addition, the guide assembly 300 includes a guide support frame 310, in which a guide slide member 320 is provided. It should be noted that the guide slide member 320 can be at least one of a guide groove, a slide rod, or a slide rail. By rolling or sliding the sliding part 130 with the guide slide member 320, the slider 120 moves along the direction defined by the guide slide member 320. The guide slide member 320 provides guidance and limiting for the sliding part 130, allowing the sliding part 130 to slide along the guide slide member 320. This ensures that the sliding part 130 moves between a first position and a second position under the guidance of the guide slide member 320, further ensuring the stability and accuracy of the sliding part 130 during its movement between the first and second positions.

[0045] It should be noted that since the sliding part 130 is connected to the slider 120, the sliding part 130 can drive the slider 120 to move synchronously during the sliding along the guide 320. The slider 120 can then drive the cutter 110 and the abutting roller 140 to move synchronously along the guide 320. This allows the cutter 110, slider 120, sliding part 130, and abutting roller 140 to move between the first and second positions under the guidance of the guide 320, thereby ensuring the accuracy, smoothness, and stability of the cutter assembly 100's movement between the first and second positions.

[0046] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the guide support frame 310 has a first mounting space 311 on the side facing the transmission output shaft 230, and a second mounting space 312 on the other side of the guide support frame 310 away from the transmission output shaft 230.

[0047] The transmission output shaft 230 is rotatably mounted in the first mounting space 311, so that the first mounting space 311 provides a limiting effect on the transmission output shaft 230 while ensuring the smoothness of the rotation of the transmission output shaft 230 by the guide support frame 310.

[0048] It is worth noting that the second transmission component 222 is rotatably connected to the end of the guide support frame 310 facing the transmission output shaft 230 (rotatable) or has a gap, and the pusher component 240 is rotatably connected to the end of the guide support frame 310 facing the transmission output shaft 230 (rotatable) or has a gap, so as to ensure the stability and smoothness of the second transmission component 222 and the pusher component 240 during rotation.

[0049] Additionally, the guide slide 320 is disposed in the second mounting space 312. It is understood that the slider 120 is at least partially disposed in the second mounting space 312 and is slidably or rollably connected to the guide slide 320, thereby ensuring the stability and smoothness of the slider 120 during movement between the first and second positions.

[0050] In this embodiment, the first mounting space 311 includes a first mounting groove 313 on the side of the guide support frame 310 facing the second transmission member 222, a second mounting groove 314 on the side of the guide support frame 310 facing the pusher member 240, and a through hole 315 connecting the first mounting groove 313 and the second mounting groove 314.

[0051] It should be noted that the axis of the first mounting groove 313, the axis of the through hole 315, and the axis of the second mounting groove 314 coincide.

[0052] The transmission output shaft 230 passes through the first mounting groove 313, the through hole 315 and the second mounting groove 314, and there is a gap between the hole wall of the through hole 315 and the transmission output shaft 230.

[0053] In this embodiment, a first bearing 500 is provided in the first mounting groove 313. The first bearing 500 is sleeved on the transmission output shaft 230, and the inner ring of the first bearing 500 is connected to the transmission output shaft 230. The outer ring of the first bearing 500 is connected to the groove wall of the first mounting groove 313. That is, during the rotation of the transmission output shaft 230, the inner ring can rotate relative to the outer ring.

[0054] In addition, a second bearing 600 is provided in the second mounting groove 314. The second bearing 600 is sleeved on the transmission output shaft 230, and the inner ring of the second bearing 600 is connected to the transmission output shaft 230, while the outer ring of the second bearing 600 is connected to the groove wall of the second mounting groove 314. That is, during the rotation of the transmission output shaft 230, the inner ring can rotate relative to the outer ring, thereby enabling the transmission output shaft 230 to rotate relative to the guide support frame 310, thus ensuring the smoothness and stability of the transmission output shaft 230 during rotation.

[0055] In this embodiment, the transmission output shaft 230 is fitted with a third bearing 400, which is located at the end of the transmission output shaft 230 away from the pusher 240, so as to ensure the stability and smoothness of the transmission output shaft 230 during rotation.

[0056] like Figures 1 to 4 As shown, in some embodiments of this application, the fuse cutting device further includes a reset component 700 for resetting the cutter assembly 100 to the second position.

[0057] It is understandable that when the cutter assembly 100 moves to the first position, the cutter assembly 100 can move from the first position to the second position under the action of the reset assembly 700, that is, the cutter assembly 100 is reset.

[0058] The reset assembly 700 includes an elastic reset member 710. One end of the elastic reset member 710 is fixedly connected to the cutter assembly 100, and the other end is fixedly connected to the transmission output shaft 230 or the guide support frame 310, so that the cutter assembly 100 can switch from the first position to the second position under the action of the elastic force of the elastic reset member 710.

[0059] like Figure 3 As shown, in some embodiments, one end of the elastic reset member 710 is fixedly connected to the cutter assembly 100, and the other end is fixedly connected to the transmission output shaft 230. The transmission output shaft 230 and the elastic reset member 710 are rotatably connected, so that the elastic reset member 710 can rotate relative to the transmission output shaft 230 during the rotation of the transmission output shaft 230, but its position relative to the guide support frame 310 is fixed, preventing the elastic reset member 710 from getting entangled in the transmission output shaft 230, thereby ensuring the stability of the elastic reset member 710 and the transmission output shaft 230.

[0060] like Figure 4 As shown, in some other embodiments, one end of the elastic reset member 710 is fixedly connected to the cutter assembly 100, and the other end is fixedly connected to the guide support frame 310. Specifically, one end of the elastic reset member 710 is connected to the end of the guide support frame 310 near the transmission output shaft 230, and the other end of the elastic reset member 710 is connected to the cutter assembly 100, so as to provide an elastic reset function for the cutter assembly 100 through the elastic reset member 710.

[0061] It should be noted that in the first position, the elastic reset member is in an elongated state. At this time, the elastic reset member stores elastic potential energy, causing the cutter assembly 100 to tend to move closer to the transmission output shaft 230 under the action of the elastic potential energy of the elastic reset member. When the pushing force of the pusher 240 on the cutter assembly 100 is removed during rotation, the cutter assembly 100 can move closer to the transmission output shaft 230 under the elastic force of the elastic reset member, thereby switching the cutter assembly 100 from the first position to the second position, thus resetting the cutter assembly 100.

[0062] like Figure 3 and Figure 4As shown, in some embodiments of this application, the cutter assembly 100 includes a first fixed shaft 150 and a second fixed shaft 160 respectively passing through the slider 120. The abutting roller 140 is fixed on the slider 120 through the first fixed shaft 150. The abutting roller 140 is rotatably connected to the first fixed shaft 150, and the abutting roller 140 is rotatably connected to the slider 120 or has a gap, so as to ensure the smoothness and stability of the abutting roller 140 during rotation.

[0063] The cutter 110 is fixed to the slider 120 via the second fixed shaft 160 to ensure the stability of the connection between the cutter 110 and the slider 120. The sliding part 130 is fixed to the slider 120 via at least one of the first fixed shaft 150 and the second fixed shaft 160. It is understood that in some embodiments, the sliding part 130 is fixed to the slider 120 via either the first fixed shaft 150 or the second fixed shaft 160. In other embodiments, the sliding part 130 comprises two sets, which are respectively fixed to the slider 120 via the first fixed shaft 150 and the second fixed shaft 160.

[0064] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments of this application, the transmission output shaft 230 protrudes at least partially from the pusher 240, and the second fixed shaft 160 protrudes at least partially from the slider 120. The transmission output shaft 230 and the second fixed shaft 160 are connected by an elastic reset member 710 to elastically connect the transmission output shaft 230 to the cutter assembly 100, thereby enabling the cutter assembly 100 to move from the second position to the first position under the elastic force of the elastic reset member 710.

[0065] like Figure 3 and Figure 4 As shown, in some embodiments of this application, the guide support frame 310 is provided with a support member 800 on the side opposite to the cutter 110, for providing support for the guide support frame 310.

[0066] In some embodiments, the fuse cutting device further includes a support platform 900, which is disposed on the side of the second transmission member 222 away from the pusher member 240, so as to provide support for the transmission assembly 220 through the support platform 900.

[0067] Understandably, one end of the support member 800 is connected to the guide support frame 310, and the other end of the support member 800 is connected to the support platform 900, in order to prevent the guide support frame 310 from shifting or tilting, so as to further improve the stability of the guide support frame 310.

[0068] Some embodiments of this application provide a 3D printer including a nozzle 1000 and a filament cutting device as described in any of the above embodiments, wherein the nozzle 1000 is disposed on the side of the cutter 110 opposite to the pusher 240.

[0069] It should be noted that the 3D printer provided in this application has the function and beneficial effects of the filament cutting device described in any of the above embodiments, which will not be repeated here.

[0070] When the cutter assembly 100 is in the first position, the cutter 110 cuts the molten wire entering the feed end of the nozzle 1000.

[0071] It should be noted that when the cutter assembly 100 moves from the second position to the first position, it can cut the molten wire entering the feed end of the nozzle 1000 through the cutter 110; when the cutter assembly 100 moves from the first position to the second position, there is a gap between the cutter 110 and the molten wire entering the feed end of the nozzle 1000, so as to avoid the cutter 110 blocking the molten wire entering the nozzle 1000, so as to ensure the smoothness and stability of the molten wire entering the nozzle 1000.

[0072] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0073] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A fuse cutting device, characterized in that, include: The cutter assembly is used to cut the fuse. A drive assembly connected to the cutter assembly is used to drive the cutter assembly to move between a first position and a second position. When the cutter assembly is in the first position, it cuts the fuse. When the cutter assembly is in the second position, it has no contact with the fuse. The drive assembly includes a drive member, a transmission assembly, a transmission output shaft, and a pusher. The drive member drives the pusher to move sequentially through the transmission assembly and the transmission output shaft. The pusher is used to push the cutter assembly from the second position to the first position under the drive of the drive member. The axis of the output shaft of the drive unit is perpendicular to the axis of the transmission output shaft.

2. The fuse cutting device according to claim 1, characterized in that, The transmission assembly includes a first transmission component and a second transmission component. The first transmission component is fixedly connected to the output shaft of the drive component, and the first transmission component and the second transmission component are connected by transmission. The rotation axis of the first transmission component is perpendicular to the rotation axis of the second transmission component. The axis of the transmission output shaft is parallel to or coincides with the rotation axis of the second transmission component.

3. The fuse cutting device according to claim 2, characterized in that, One end of the transmission output shaft is fixedly connected to the second transmission component, and the other end of the transmission output shaft is fixedly connected to the push component; The pusher is a cam, and the periphery of the cam abuts against the cutter assembly.

4. The fuse cutting device according to claim 2, characterized in that, The cutting assembly includes a cutting blade, a slider, a sliding part, and a supporting roller. The cutting blade, the sliding part, and the supporting roller are all disposed on the slider, and the supporting roller abuts against the pushing member. The fuse cutting device further includes a guide assembly for limiting the movement trajectory of the cutter assembly. The guide assembly includes a guide support frame, in which a guide slide is provided. The sliding part rolls or slides with the guide slide, causing the slider to move along the direction defined by the guide slide.

5. The fuse cutting device according to claim 4, characterized in that, The guide support frame has a first mounting space on the side facing the transmission output shaft, and a second mounting space on the other side away from the transmission output shaft. The transmission output shaft is rotatably mounted in the first mounting space, and the guide slide is disposed in the second mounting space; The first mounting space includes a first mounting groove disposed on the side of the guide support frame facing the second transmission member, a second mounting groove disposed on the side of the guide support frame facing the push member, and a through hole connecting the first mounting groove and the second mounting groove; The transmission output shaft passes through the first mounting groove, the through hole, and the second mounting groove; The first mounting groove is provided with a first bearing, which is sleeved on the transmission output shaft; the second mounting groove is provided with a second bearing, which is sleeved on the transmission output shaft. The transmission output shaft is fitted with a third bearing, which is located at one end of the transmission output shaft away from the pusher.

6. The fuse cutting device according to claim 4, characterized in that, It also includes a reset component for resetting the cutter assembly to the second position; The reset assembly includes an elastic reset member, one end of which is fixedly connected to the cutter assembly, and the other end of which is fixedly connected to the transmission output shaft or guide support frame.

7. The fuse cutting device according to claim 6, characterized in that, The cutter assembly includes a first fixed shaft and a second fixed shaft respectively passing through the slider. The abutting roller is fixed to the slider via the first fixed shaft. The cutter is fixed to the slider via the second fixed shaft. The sliding part is fixed to the slider via at least one of the first fixed shaft and the second fixed shaft.

8. The fuse cutting device according to claim 7, characterized in that, The transmission output shaft protrudes at least partially from the pusher, the second fixed shaft protrudes at least partially from the slider, and the transmission output shaft and the second fixed shaft are connected by the elastic reset member.

9. The fuse cutting device according to any one of claims 4-8, characterized in that, The guide support frame has a support member on the side opposite to the cutter, which is used to support the guide support frame.

10. A 3D printer, characterized in that, The device includes a nozzle and a fuse cutting device according to any one of claims 1 to 9, wherein the nozzle is disposed on the side of the cutter opposite to the pusher; When the cutter assembly is in the first position, the cutter cuts the molten wire entering the feed end of the nozzle.

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