Hidden material cutting device, 3D printer applying hidden material cutting device and operation method

Abstract

The invention relates to the technical field of 3D printing, in particular to a hidden material cutting device, a 3D printer applying the hidden material cutting device and an operation method. The hidden cutting device comprises a mounting body fixedly mounted in a frame structure on the periphery of a printing platform of the 3D printer, and a cutter ejector rod rotationally connected to the mounting body. The cutter ejector rod has a first state which is located in the periphery of the printing platform and extends in the first direction and a second state which is located in a printing area of the printing platform and extends in the second direction, and when the cutter ejector rod is switched to the second state, a cutting component of a spray head assembly of the 3D printer faces the cutter ejector rod; and the driving piece is in linkage connection with the cutter ejector rod and controls the cutter ejector rod to rotate and switch between the first state and the second state. The technical problems that the printing space of the 3D printer is occupied, the printing space is wasted, and the printing efficiency is affected are solved.

Description

Technical Field

[0001] The present application relates to the technical field of 3D printing, and in particular to a hidden cutting device, a 3D printer using the same, and an operating method. Background Art

[0002] 3D printers heat the nozzle assembly at high temperature to melt the printing filament and deposit it onto the printing platform. When the melted printing filament contacts the printing platform, it cools and quickly solidifies. The nozzle assembly deposits the printing material layer by layer onto the printing platform along a set printing path, thereby constructing a model with a three-dimensional structure.

[0003] At present, the cutter push rod used to assist in cutting the filament on the nozzle assembly in the 3D printer is generally fixed in the corner of the printing platform to minimize the impact on the printing space. However, even so, the cutter push rod must at least be extended, and its extended part must fall within the printing area of ​​the printing platform, and it always needs to occupy a certain printing area before the nozzle assembly can move to this position within its printing stroke trajectory to hit the extended cutter push rod, so that the cutter push rod is inserted to push the cutter handle on the nozzle assembly to drive the cutter to move and cut the filament.

[0004] Even if the cutter ejector bar is arranged in the corner of the printing platform to minimize the occupied space, it will always occupy at least a part of the printing area space, resulting in a waste of printing space and affecting printing efficiency. Summary of the invention

[0005] The purpose of the present application is to provide a hidden cutting device and a 3D printer and an operation method using the same, so as to solve the technical problem of occupying the printing space of the 3D printer, causing waste of printing space and affecting printing efficiency.

[0006] In a first aspect, the present application provides a hidden cutting device, which is applied to a 3D printer, comprising:

[0007] The installation body is fixedly installed in the frame structure outside the printing platform of the 3D printer;

[0008] A cutter push rod rotatably connected to the mounting body, the cutter push rod having a first state of being located within the periphery of the printing platform and extending along a first direction and a second state of being located within the printing area of ​​the printing platform and extending along a second direction, when the cutter push rod is switched to the second state, a cutting component of a nozzle assembly of the 3D printer faces the cutter push rod; and

[0009] A driving member linked to the cutter top rod controls the cutter top rod to rotate and transform between the first state and the second state.

[0010] Furthermore, a buffer gear is rotatably connected to the mounting body, and the cutter top rod is in contact with and arranged opposite to the buffer gear;

[0011] The driving member extends or retracts along the first direction, a rack is provided on the side wall of the driving member, and the rack is meshed and connected with the buffer gear;

[0012] The buffer gear is provided with a first buffer portion, and the cutter top rod is provided with a second buffer portion corresponding to the first buffer portion. When the cutter top rod is rotated to its second state, the driving member continues to move in the first direction, and the first buffer portion of the buffer gear is disengaged from the second buffer portion of the cutter top rod for buffering.

[0013] Further, the mounting body is provided with a vertically arranged rotating shaft, the rotating shaft is sleeved with the buffer gear, the cutter top rod is rotatably connected to the rotating shaft, and is in contact with and opposite to the buffer gear; and / or

[0014] The first buffer portion is configured as a first buffer chamfered structure, and the second buffer portion is configured as a second buffer chamfered structure.

[0015] Furthermore, the top of the buffer gear is provided with at least one first convex portion and at least one first concave portion arranged at intervals, and at least one first buffer portion, and adjacent first convex portions and first concave portions are transitionally connected by the first buffer portion;

[0016] Correspondingly, the bottom of the cutter mandrel is provided with at least one second convex portion and at least one second concave portion spaced apart from each other, and at least one second buffer portion, and adjacent second convex portions and second concave portions are transitionally connected by the second buffer portion.

[0017] Furthermore, a spring member is sleeved on the rotating shaft, the spring member is located below the buffer gear, and a slot is provided at the bottom of the buffer gear;

[0018] The top end of the spring component is inserted and connected in the slot for fixing, and the bottom end of the spring component is fixedly connected to the installation body.

[0019] Furthermore, a reset torsion spring is sleeved and connected at the connection between the rotating shaft and the cutter top rod, one end of the reset torsion spring is fixedly connected to the cutter top rod, and the other end is fixedly connected to the mounting body, and the first state of the cutter top rod is its initial state of reset.

[0020] Further, the driving member is configured as a collision block extending along a first direction, the collision block is mounted on the mounting body, and moves outward or retracted along the first direction, and a first end portion of the collision block extends out of the mounting body; and / or

[0021] The first direction and the second direction are both horizontal directions and are arranged at an angle, and the angle is greater than 20°.

[0022] Furthermore, the hidden cutting device also includes an installation connection block, the cutter top rod and the driving member are installed on the installation connection block, and the installation body is recessed with an installation notch, and the installation connection block can be detachably installed in the installation notch.

[0023] In a second aspect, the present application provides a 3D printer, using any of the aforementioned hidden cutting devices, wherein a driving end of a driving member of the hidden cutting device extends toward a first direction, and the driving end extends or retracts along the first direction to transform movement;

[0024] The 3D printer comprises a printing platform, a frame structure supported and connected to and fixed outside a printing area of ​​the printing platform, a nozzle assembly having a cutting component slidably connected to a third sliding shaft, and an impact assembly slidably connected to a first sliding shaft, wherein the cutting component can be arranged toward the cutter top rod of the hidden cutting device;

[0025] The first sliding axis and the second sliding axis extending along the first direction are fixedly arranged on opposite sides of the frame structure, and the third sliding axis extends in a direction perpendicular to the same horizontal plane as the first direction. The installation body of the hidden cutting device is embedded and fixedly connected to the corner position of the frame structure connected to the first sliding axis. One end of the third sliding axis is fixedly connected to the impact assembly, and the other end is slidably connected to the second sliding axis via a adapter.

[0026] In a third aspect, the present application provides an operating method, including the aforementioned 3D printer, the operating method comprising:

[0027] Step 100, controlling the impact assembly to move along the first sliding axis toward the installation body of the hidden cutting device and impact the driving end of the driving member of the hidden cutting device, and causing the driving end to retract and move, while the cutter ejector rod is transferred from a first state located within the periphery of the printing platform and extending along the first direction to a second state located within the printing area of ​​the printing platform and extending along the second direction;

[0028] Step 200, controlling the side of the nozzle assembly provided with the cutting component to move along the third sliding axis toward the direction of the cutter push rod, so that the cutter push rod abuts against the driving side of the cutter handle of the cutting component, and driving the cutter to cut the wire material;

[0029] Step 300, control the nozzle assembly to move along the third sliding axis in a direction away from the cutter top rod, control the impact assembly to move along the first sliding axis in a direction away from the mounting body to disengage from the driving end, the driving end resets and extends, and at the same time the cutter top rod returns from the second state to the first state.

[0030] Compared with the prior art, the hidden cutting device provided by the present application is applied to a 3D printer. The installation body of the hidden cutting device is used to be fixedly installed in the frame structure of the periphery of the printing platform of the 3D printer, is located outside the printing area, and does not occupy the printing space; the cutter push rod rotatably connected to the installation body has a first state in which it is located within the periphery of the printing platform and extends along a first direction (such as the Y-axis direction) and a second state in which it is located within the printing area of ​​the printing platform and extends along a second direction (such as the X-axis direction). When cutting is not required, the cutter push rod is in the initial state of the first state, hidden within the range of the frame structure outside the printing area, does not affect the printing work, and does not occupy the printing space. Use printing space; when cutting is required, the cutter push rod is converted to the second state, temporarily enters the printing area, and enters the travel range of the nozzle assembly so that the nozzle assembly can reach it. The cutting component of the nozzle assembly of the 3D printer is arranged toward the cutter push rod and moves toward the cutter push rod, so that the cutter push rod contacts the driving side of the cutter handle of the cutting component, and drives the cutter to cut the wire material; it is also provided with a driving member linked to the cutter push rod to control the cutter push rod to rotate and transform between its first state and its second state. Preferably, the driving end of the driving member extends toward the first direction, and the driving end extends or retracts along the first direction to move and transform, so as to further facilitate the control of the movement and transformation of the driving member.

[0031] With such a configuration, the hidden cutting device provided in the present application, and the 3D printer and operation method using the hidden cutting device, can be completely hidden outside the printing area when cutting is not performed, and does not occupy the printing space at all, thereby greatly improving the printing efficiency. Only when preparing to cut materials, the cutter top rod of the hidden cutting device is rotated to enter the printing area to enter the moving range of the nozzle assembly provided with the cutting component for cutting. Printing will not be performed during the cutting process, so the printing work efficiency is not affected at all. Overall, the printing efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of a portion of the structure of a 3D printer provided in an embodiment of the present application Figure 1 ;

[0034] Figure 2 A schematic diagram of the structure of a 3D printer provided in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of the structure of a hidden cutting device provided in an embodiment of the present application;

[0036] Figure 4 An exploded view of a hidden cutting device provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of a portion of the structure of a cutter mandrel of a hidden cutting device provided in an embodiment of the present application in a first state;

[0038] Figure 6 A schematic diagram of a portion of the structure of a cutter mandrel of a hidden cutting device provided in an embodiment of the present application in a second state;

[0039] Figure 7 A schematic diagram of the structure of the buffer gear provided in an embodiment of the present application;

[0040] Figure 8 A schematic diagram of the structure of the cutter mandrel provided in an embodiment of the present application;

[0041] Fig. 9 A schematic diagram of a portion of the structure of the hidden cutting device provided in the embodiment of the present application Figure 1 ;

[0042] Fig.10 A schematic diagram of a portion of the structure of the hidden cutting device provided in the embodiment of the present application Figure 2 ;

[0043] Fig.11 A schematic diagram of a portion of the structure of a 3D printer provided in an embodiment of the present application Figure 2 ;

[0044] Fig.12 A schematic diagram of the structure of the impact assembly provided in the embodiment of the present application impacting the hidden cutting device;

[0045] Fig.13 A schematic diagram of the structure of the bumper assembly provided in an embodiment of the present application.

[0046] Reference numerals:

[0047] 100-Hidden cutting device;

[0048] 10- Install the main body;

[0049] 11- Installation gap;

[0050] 20-cutter top rod;

[0051] 21- second buffer chamfering structure;

[0052] 22-The second convex part;

[0053] 23-Second recess;

[0054] 30-Bumper;

[0055] 31- rack;

[0056] 32- a first end portion;

[0057] 40-rotating shaft;

[0058] 50-buffer gear;

[0059] 51- first buffer chamfering structure;

[0060] 52-The first convex part;

[0061] 53-First recess;

[0062] 54-slots;

[0063] 60-spring member;

[0064] 61-apical part;

[0065] 62- bottom end portion;

[0066] 70-reset torsion spring;

[0067] 80-install the connection block;

[0068] 81-mounting hole;

[0069] 90-connecting piece;

[0070] 200-printing platform;

[0071] 300-frame structure;

[0072] 301-first Y axis;

[0073] 302-second Y axis;

[0074] 303-X axis;

[0075] 400-Sprinkler assembly;

[0076] 401-cutter handle;

[0077] 402-cutter;

[0078] 403-Silk material;

[0079] 500-impact assembly;

[0080] 600-Adapter. DETAILED DESCRIPTION

[0081] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0082] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0083] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0084] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0085] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0086] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0088] like Figure 1 , Figure 2 and Figures 10 to 13 As shown, the embodiment of the present application provides a hidden cutting device 100 and a 3D printer using the hidden cutting device 100. The embodiment of the present application takes the first direction as Figure 1 and Figure 2 The Y direction shown is taken as an example for explanation, and the X direction is a direction perpendicular to the first direction in the same horizontal plane. The 3D printer includes a printing platform 200, a frame structure 300 supported and connected and fixed outside the printing area of ​​the printing platform 200, a nozzle assembly 400 with a cutting component slidably connected to the X-axis 303 (that is, the third sliding axis) of the 3D printer, and an impact assembly 500 slidably connected to the first Y-axis 301 (that is, the first sliding axis) of the 3D printer. The cutting component can be set toward the cutter top rod 20 of the hidden cutting device 100.

[0089] The frame structure 300 has two opposite sides fixedly provided with Figure 1 and Figure 2 The first Y-axis 301 and the second Y-axis 302 are shown extending in the Y-direction, the first Y-axis 301 is the first sliding axis, the second Y-axis 302 is the second sliding axis, the X-axis 303 is the third sliding axis, and the third sliding axis is extended in a direction perpendicular to the same horizontal plane as the first direction; the corner position of the frame structure 300 connected to the first Y-axis 301 is embedded with an installation body 10 fixedly connected with the hidden cutting device 100 provided in the embodiment of the present application, one end of the X-axis 303 is fixedly connected to the impact assembly 500, and the other end is slidably connected to the second Y-axis 302 via the adapter 600, so as to drive the nozzle assembly 400 slidably connected thereto to move along the Y-direction.

[0090] like Figures 1 to 3As shown, the hidden cutting device 100 provided in the embodiment of the present application includes an installation body 10 fixedly installed in a frame structure 300 outside the printing platform 200 of the 3D printer, and a cutter push rod 20 rotatably connected to the installation body 10, and a driving member linked to the cutter push rod 20, the driving member controls the cutter push rod 20 to rotate and transform between its first state and its second state; the cutter push rod 20 has a first state located inside the periphery of the printing platform 200 (i.e., outside the printing area) and extending along a first direction (such as the Y direction), and a second state located in the printing area of ​​the printing platform 200 and extending along a second direction, and the second direction can be as follows Figure 1 and Figure 2 The X direction shown is perpendicular to the first direction and the same horizontal direction, and the second direction may also be set at an angle to the first direction and the same horizontal direction, and the angle is greater than 20°. As long as the cutter push rod 20 is turned to the second direction, the cutter push rod 20 can contact the driving side of the cutter handle of the cutting component to drive the cutter to cut the wire material; and the first state is the initial state of the cutter push rod 20. When the cutter push rod 20 is converted to the second state, the cutting component of the nozzle assembly 400 of the 3D printer is facing the cutter push rod 20.

[0091] Compared with the prior art, the hidden cutting device 100 provided in the embodiment of the present application is applied to a 3D printer. The installation body 10 of the hidden cutting device 100 is used to be fixedly installed in a frame structure 300 outside the printing platform 200 of the 3D printer, located outside the printing area, and does not occupy the printing space; the cutter push rod 20 rotatably connected to the installation body 10 has a first state located inside the periphery of the printing platform 200 and extending along a first direction and a second state located in the printing area of ​​the printing platform 200 and extending along a second direction. When cutting is not required, the cutter push rod 20 is rotated to the installation body 10 and extends along a first direction. When cutting materials, the cutter push rod 20 is in the initial state of the first state, hidden within the range of the frame structure 300 outside the printing area, does not affect the printing work, and does not occupy the printing space; when cutting materials is needed, the cutter push rod 20 is switched to the second state, temporarily enters the printing area, enters the travel range of the nozzle assembly 400, and enables the nozzle assembly 400 to reach, and the cutting component of the nozzle assembly 400 of the 3D printer is arranged toward the cutter push rod 20, and moves toward the cutter push rod 20, so that the cutter push rod 20 contacts the driving side of the cutter handle 401 of the cutting component, such as Fig.11 FIG. 4 is a schematic diagram of a part of the structure of the 3D printer when the nozzle assembly 400 reaches and fits the position of the cutter top rod 20. Fig.13As shown, the cutter top rod 20 can touch the cutter handle 401 and drive the cutter handle 401 forward, and at the same time drive the driving cutter 402 connected to the cutter handle 401 to cut the wire material 403; it is also provided with a driving member linked to the cutter top rod 20 to control the cutter top rod 20 to rotate between its first state and its second state. Preferably, the driving end of the driving member extends toward the first direction, and the driving end extends or retracts along the first direction to move and transform, so as to further facilitate the control of the movement and transformation of the driving member.

[0092] With such an arrangement, the hidden cutting device 100 provided in the embodiment of the present application and the 3D printer using the hidden cutting device 100 can be completely hidden outside the printing area when not cutting materials, and does not occupy any printing space, thereby greatly improving the printing efficiency. Only when preparing to cut materials, the cutter top rod 20 of the hidden cutting device 100 is rotated to enter the printing area, so as to enter the moving range of the nozzle assembly 400 provided with the cutting component to cut materials. Printing will not be performed during the cutting process, so the printing work efficiency is not affected at all. Overall, the printing efficiency is greatly improved.

[0093] A specific embodiment is as follows Figures 1 to 6 As shown, the driving member in the aforementioned embodiment can be specifically configured as a collision block 30 extending along a first direction (such as the Y direction), the collision block 30 is installed on the installation body 10, and the collision block 30 extends or retracts along the first direction (such as the Y direction), and the first end 32 of the collision block 30 extends out of the installation body 10. When the collision block 30 is hit by an external force (specifically, it can be an impact component 500) and retracts along the first direction (such as the Y direction), the cutter top rod 20 is transferred from its first state to the second state, such as Fig.12 As shown, it is a schematic structural diagram of the impact assembly 500 impacting the impact block 30, so that the cutter top rod 20 is in the second state. When the external force impacting the impact block 30 is withdrawn, the cutter top rod 20 returns from its second state to its first state.

[0094] Such a configuration can facilitate the impact component 500 to move directly along the Y-axis (specifically, the first Y-axis 301) to directly impact the first end 32 of the impact block 30, and the driving control method is simpler and more efficient. When the impact component 500 impacts the impact block 30, since the impact component 500 is connected to one end of the X-axis 303, it also drives the nozzle assembly 400 connected to the X-axis 303 and provided with a cutting component to move closer to the hidden cutting device 100, thereby shortening the distance between the nozzle assembly 400 and the hidden cutting device 100. The two steps are performed simultaneously to improve working efficiency.

[0095] An optional embodiment is that the bottom of the cutter top rod 20 can be fixedly connected with a gear, and the side wall of the aforementioned impact block 30 can be correspondingly provided with a rack 31, and the rack 31 is meshedly connected with the gear to drive the cutter top rod 20 to rotate.

[0096] A preferred embodiment is as follows Figures 4 to 8 As shown, the mounting body 10 may also be provided with a vertically arranged rotating shaft 40, and the cutter top rod 20 may be rotatably connected to the rotating shaft 40. A buffer gear 50 is also sleeved on the rotating shaft 40. The buffer gear 50 is in contact with and relatively arranged with the cutter top rod 20. The buffer gear 50 may be specifically located below the cutter top rod 20. The buffer gear 50 may be provided with a first buffer portion. Specifically, a first buffer bevel structure 51 is provided at the top of the buffer gear 50. The first buffer bevel structure 51 may be the first buffer portion. Correspondingly, the cutter top rod 20 may be provided with a second buffer portion. Specifically, a second buffer bevel structure 21 corresponding to and cooperating with the first buffer bevel structure 51 is provided at the bottom of the cutter top rod 20. The second buffer bevel structure 21 may be the second buffer portion. The side wall of the collision block 30 may be provided with a rack 31, and the rack 31 is meshingly connected with the buffer gear 50.

[0097] When the collision block 30 retracts along the Y-axis direction, the collision block rack 31 drives the buffer gear 50 to rotate, and the friction between the buffer gear 50 and the cutter top rod 20 is greater than the friction between the cutter top rod 20 and the mounting body 10, driving the cutter top rod 20 to swing synchronously; when the cutter top rod 20 is in place, the swing of the cutter top rod 20 is limited, the collision block 30 continues to move, and the first buffer bevel structure 51 of the buffer gear 50 disengages from the second buffer bevel structure 21 of the cutter top rod 20, such as Figure 6 As shown, the buffer gear 50 and the cutter top rod 20 are temporarily separated, and the excess force given by the excess stroke of the aforementioned collision block 30 is buffered and consumed, avoiding the Y-axis stroke being limited and causing the motor to lose steps.

[0098] Further, a specific embodiment is as follows: Figure 7 As shown, the top surface of the aforementioned buffer gear 50 is preferably set as a spiral surface. Specifically, the top of the buffer gear 50 can be provided with at least one first convex portion 52 and at least one first concave portion 53 arranged at intervals, and the adjacent first convex portions 52 and first concave portions 53 are transitionally connected by a first buffer chamfer structure 51; correspondingly, as shown Figure 7 As shown, the bottom surface of the cutter top rod 20 is preferably set as a spiral surface. Specifically, the bottom of the cutter top rod 20 can be provided with at least one second protrusion 22 and at least one second recess 23 arranged at intervals, and the adjacent second protrusions 22 and second recesses 23 are transitionally connected by a second buffer bevel structure 21.

[0099] Regarding the automatic resetting mode of the cutter top rod 20, a preferred embodiment is as follows: Fig. 9 As shown, the aforementioned rotating shaft 40 may also be provided with a spring member 60, the spring member 60 is located below the buffer gear 50, and a slot 54 may be provided at the bottom of the buffer gear 50, the top end 61 of the spring member 60 is inserted and connected to the slot 54 for fixing, and the bottom end 62 of the spring member 60 is fixedly connected to the mounting body 10. When the collision block 30 is retracted and moved into position along the Y-axis direction, the first buffer bevel structure 51 of the buffer gear 50 is separated from the second buffer bevel structure 21 of the cutter top rod 20 and moves downward to compress the spring member 60, and the elastic potential energy is maintained. When the external force applied to the collision block 30 is cancelled, the elastic potential energy is automatically released, and the collision block 30 and the cutter top rod 20 are automatically reset.

[0100] Another preferred embodiment is as follows Fig.10 As shown, a reset torsion spring 70 may be sleeved and connected at the connection between the aforementioned rotating shaft 40 and the cutter top rod 20. One end of the reset torsion spring 70 is fixedly connected to the cutter top rod 20, and the other end is fixedly connected to the mounting body 10. The first state of the cutter top rod 20 is its initial state of reset.

[0101] In addition, if Figure 3 and Figure 4 As shown, the hidden cutting device 100 provided in the embodiment of the present application may also include an installation connection block 80, and the aforementioned cutter top rod 20, driving member (specifically, it can be a collision block 30), rotating shaft 40, buffer gear 50, spring member 60, reset torsion spring 70, etc. can be installed and connected on the installation connection block 80, and the installation body 10 is recessed with an installation notch 11, and the installation connection block 80 can be removably installed in the installation notch 11, so as to facilitate the disassembly, maintenance, replacement, etc. of the installation connection block 80. Specifically, the installation connection block 80 can be provided with an installation hole 81, which is detachably fixedly connected through a connecting member 90, and the connecting member 90 can be specifically a screw.

[0102] The embodiment of the present application further provides an operation method, based on any of the aforementioned embodiments of the hidden cutting device 100 and any of the embodiments of the 3D printer having the hidden cutting device 100, the operation method includes:

[0103] Step 100, control the impact assembly 500 to move along the first Y-axis 301 (i.e., the first sliding axis) toward the installation body 10 of the hidden cutting device 100 and impact the driving end of the driving member of the hidden cutting device 100 (specifically, the first end 32 of the impact block 30), and retract the driving end, while the cutter push rod 20 is transferred from the first state located inside the periphery of the printing platform 200 and extending along the first direction to the second state located inside the printing area of ​​the printing platform 200 and extending along the second direction;

[0104] Step 200, controlling the side of the nozzle assembly 400 provided with the cutting component to move along the X-axis 303 (i.e., the third sliding axis) toward the cutter push rod 20, so that the cutter push rod 20 contacts the driving side of the cutter handle 401 of the cutting component, and driving the cutter 402 to cut the wire 403;

[0105] Step 300, control the nozzle assembly 400 to move along the X-axis 303 (i.e., the third sliding axis) in a direction away from the cutter top rod 20, control the impact assembly 500 to move along the first Y-axis 301 (i.e., the first sliding axis) in a direction away from the mounting body 10 to disengage from the driving end, the driving end is reset and extended, and at the same time the cutter top rod 20 is transferred from the second state back to the first state.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hidden cutting device, applied to a 3D printer, characterized in that: include: The installation body is fixedly installed in the frame structure outside the printing platform of the 3D printer; A cutter push rod rotatably connected to the mounting body, wherein the cutter push rod has a first state of being located within the periphery of the printing platform and extending along a first direction and a second state of being located within the printing area of ​​the printing platform and extending along a second direction, and when the cutter push rod is switched to the second state, a cutting component of a nozzle assembly of the 3D printer faces the cutter push rod; as well as A driving member linked to the cutter top rod controls the cutter top rod to rotate and transform between the first state and the second state.

2. The hidden cutting device according to claim 1, characterized in that: The installation body is rotatably connected with a buffer gear, and the cutter top rod is in contact with and arranged opposite to the buffer gear; The driving member extends or retracts along the first direction, a rack is provided on the side wall of the driving member, and the rack is meshed and connected with the buffer gear; The buffer gear is provided with a first buffer portion, and the cutter top rod is provided with a second buffer portion corresponding to the first buffer portion. When the cutter top rod is rotated to its second state, the driving member continues to move in the first direction, and the first buffer portion of the buffer gear is disengaged from the second buffer portion of the cutter top rod for buffering.

3. The hidden cutting device according to claim 2, characterized in that: The mounting body is provided with a vertically arranged rotating shaft, the rotating shaft is sleeved with the buffer gear, the cutter top rod is rotatably connected to the rotating shaft, and is in contact with and opposite to the buffer gear; and / or The first buffer portion is configured as a first buffer chamfered structure, and the second buffer portion is configured as a second buffer chamfered structure.

4. The hidden cutting device according to claim 3, characterized in that: The top of the buffer gear is provided with at least one first convex portion and at least one first concave portion arranged at intervals, and at least one first buffer portion, and adjacent first convex portions and first concave portions are transitionally connected by the first buffer portion; Correspondingly, the bottom of the cutter mandrel is provided with at least one second convex portion and at least one second concave portion spaced apart from each other, and at least one second buffer portion, and adjacent second convex portions and second concave portions are transitionally connected by the second buffer portion.

5. The hidden cutting device according to claim 3, characterized in that: A spring member is sleeved on the rotating shaft, and the spring member is located below the buffer gear, and a slot is provided at the bottom of the buffer gear; The top end of the spring component is inserted and connected in the slot for fixing, and the bottom end of the spring component is fixedly connected to the installation body.

6. The hidden cutting device according to claim 3, characterized in that: A reset torsion spring is sleeved and connected at the connection between the rotating shaft and the cutter top rod. One end of the reset torsion spring is fixedly connected to the cutter top rod, and the other end is fixedly connected to the mounting body. The first state of the cutter top rod is its initial state of reset.

7. The hidden cutting device according to any one of claims 1 to 6, characterized in that: The driving member is configured as a collision block extending along a first direction, the collision block is mounted on the mounting body and moves forward or retracted along the first direction, and a first end portion of the collision block extends out of the mounting body; and / or The first direction and the second direction are both horizontal directions and are arranged at an angle, and the angle is greater than 20°.

8. The hidden cutting device according to claim 1, characterized in that: It also includes an installation connection block, the cutter mandrel and the driving member are installed on the installation connection block, and the installation main body is concavely provided with an installation notch, and the installation connection block can be detachably installed in the installation notch.

9. A 3D printer, characterized in that: A hidden cutting device according to any one of claims 1 to 8, wherein a driving end of a driving member of the hidden cutting device extends toward a first direction, and the driving end can be extended or retracted along the first direction; The 3D printer comprises a printing platform, a frame structure supported and connected to and fixed outside a printing area of ​​the printing platform, a nozzle assembly having a cutting component slidably connected to a third sliding shaft, and an impact assembly slidably connected to a first sliding shaft, wherein the cutting component can be arranged toward the cutter top rod of the hidden cutting device; The first sliding axis and the second sliding axis extending along the first direction are fixedly arranged on opposite sides of the frame structure, and the third sliding axis extends in a direction perpendicular to the same horizontal plane as the first direction. The installation body of the hidden cutting device is embedded and fixedly connected to the corner position of the frame structure connected to the first sliding axis. One end of the third sliding axis is fixedly connected to the impact assembly, and the other end is slidably connected to the second sliding axis via a adapter.

10. An operating method, characterized in that: Including the 3D printer of claim 9, the operating method comprises: Step 100, controlling the impact assembly to move along the first sliding axis toward the installation body of the hidden cutting device and impact the driving end of the driving member of the hidden cutting device, and causing the driving end to retract and move, while the cutter ejector rod is transferred from a first state located within the periphery of the printing platform and extending along the first direction to a second state located within the printing area of ​​the printing platform and extending along the second direction; Step 200, controlling the side of the nozzle assembly provided with the cutting component to move along the third sliding axis toward the direction of the cutter push rod, so that the cutter push rod abuts against the driving side of the cutter handle of the cutting component, and driving the cutter to cut the wire material; Step 300, control the nozzle assembly to move along the third sliding axis in a direction away from the cutter top rod, control the impact assembly to move along the first sliding axis in a direction away from the mounting body to disengage from the driving end, the driving end resets and extends, and at the same time the cutter top rod returns from the second state to the first state.

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