Cutter triggering device and 3D printing equipment

Abstract

This invention provides a cutting trigger device and a 3D printing device. The 3D printing device includes a frame, a tool head, and a cutting assembly. The cutting assembly is disposed on the tool head, and the tool head is mounted on the frame. The cutting assembly operates by moving along the X-axis and / or Y-axis of the 3D printing device. The cutting trigger device includes a base, a triggering component, and a driving component. The triggering component includes a triggering structure rotatably connected to the base. The triggering component has an initial position and a working position. In the initial position, the triggering component is located outside the movement space of the tool head. In the working position, the triggering component is at least partially located within the movement space, for triggering the cutting assembly to cut material. The driving component is mounted on the base and drives the triggering component to rotate. The cutting trigger device of this invention can improve the space utilization of the 3D printing device and is beneficial for the miniaturization of 3D printing equipment.

Description

Technical Field

[0001] This invention relates to the field of 3D printing, and in particular to a cutter triggering device and a 3D printing equipment. Background Technology

[0002] A 3D printer is a printing device that uses digital model files as a basis and powdered metal or plastic and other bondable materials as printing materials to form objects layer by layer. A typical 3D printing technology is fused deposition modeling (FDM), whose main printing process is as follows: the nozzle of the print head ejects filaments of molten polymer material. At the same time, the nozzle is driven by a motor to move in the XY plane according to a set path, so that the filaments of molten polymer material ejected by the nozzle form thin sheets of printing material on the two-dimensional plane. By repeating the above process and stacking the printing layers, the molten polymer material is finally printed into a three-dimensional object.

[0003] 3D printing equipment includes a frame, an XY motion mechanism, a printing panel, a tool head, and a cutter triggering device. In some existing technologies, the cutting component is located on the tool head, and the cutter triggering device is located on the frame. When it is necessary to switch filament during the printing process of the tool head, the tool head will drive the cutting component to the cutter triggering device, and the cutter triggering device will cut the current filament on the tool head so as to replace it with a different filament.

[0004] In existing technologies, the trigger element of the cutter triggering device is positioned along the X-axis. During cutting, the tool head moves along the X-axis and pushes against the trigger element to cut the filament. However, this structure occupies a large amount of space along the X-axis, significantly reducing the effective printing stroke of the tool head for 3D printing equipment with the same external shape. Therefore, when a large printing area is required, the 3D printing equipment will be very large, which is not conducive to miniaturization. Furthermore, the existing method also has low space utilization of the 3D printing equipment. Summary of the Invention

[0005] Based on the above situation, the main objective of this invention is to provide a cutting trigger device and a 3D printing device to improve the space utilization of the 3D printing device and facilitate the miniaturization of the 3D printing device.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A first aspect of the present invention provides a cutter triggering device for a 3D printing device, the 3D printing device including a frame, a tool head, and a cutting assembly, the cutting assembly being disposed on the tool head, the tool head being mounted on the frame, and operating by moving along the X-axis and / or Y-axis of the 3D printing device; the cutter triggering device includes a base, a triggering component, and a driving component.

[0008] The triggering component includes a triggering structure rotatably connected to the base. The triggering element has an initial position and a working position. In the initial position, the triggering element is located outside the movement space of the tool head. In the working position, the triggering element is at least partially located in the movement space, for triggering the cutting component to cut the material.

[0009] The drive assembly is mounted on the base and is used to drive the trigger to rotate.

[0010] Optionally, the rotation axis of the trigger is perpendicular to the XY plane of the 3D printing equipment.

[0011] Optionally, the line connecting the trigger point of the trigger and the center point of its rotating support section is projected along the rotation axis of the trigger and taken as the center line, which is perpendicular to the rotation axis.

[0012] Alternatively, the normal direction of the trigger point of the trigger element is perpendicular to the rotation axis of the trigger element when it is triggered.

[0013] Optionally, the drive assembly includes a trigger rack, a drive gear, and a first transmission mechanism, wherein the trigger rack is slidably mounted on the base, and the drive gear is rotatably mounted on the base and meshes with the trigger rack;

[0014] The trigger is provided with meshing teeth at the rotation axis, and the meshing teeth are driven to engage with the drive gear through the first transmission mechanism.

[0015] Optionally, the first transmission mechanism includes an odd number of first transmission gears that mesh with each other sequentially. Of these odd number of meshing first transmission gears, the two most distant first transmission gears mesh with the driving gear and the meshing teeth on the trigger element, respectively.

[0016] The first transmission mechanism includes a drive rack, which is slidably mounted on the base along a direction parallel to the trigger rack, and is connected to the trigger rack via the drive gear;

[0017] The meshing teeth on the trigger engage with the drive rack.

[0018] Optionally, at least one of the trigger rack and the drive rack is a sliding rack, and the sliding rack is provided with a plurality of mounting holes along its sliding direction; the base is provided with a sliding mounting groove corresponding to the position of the sliding rack;

[0019] The drive assembly further includes a limiting member, which is selectively mounted in at least one of the mounting holes, with its end extending out of the mounting hole and slidingly engaging with the sliding mounting groove to adjust the sliding stroke and starting position of the sliding rack.

[0020] Optionally, the transmission end of the trigger engages with the drive rack, and in the initial position, the trigger and the drive rack are arranged parallel to each other, with the trigger end of the trigger and the drive gear located on opposite sides of the transmission end; the trigger rack and the trigger are located on the same side of the drive rack.

[0021] Optionally, when projected along the rotation axis of the trigger, the active space of the trigger and the sliding stroke of the trigger rack have an overlapping area.

[0022] Optionally, the 3D printing equipment includes a frame, a Y-axis slide rail, and a Y-axis slider, wherein the Y-axis slide rail is mounted on the frame; and the Y-axis slider is slidably mounted on the Y-axis slide rail.

[0023] The base is mounted on the frame. In the initial position, the center line of the trigger is parallel to the Y-axis slide rail. In the working position, the center line of the trigger is perpendicular to the Y-axis slide rail. The trigger rack is at least partially located within the sliding stroke of the Y-axis slider so as to drive the trigger rack to move by sliding the Y-axis slider.

[0024] Optionally, the trigger rack includes a rack portion and a trigger block, the trigger block protruding from the rack portion and located within the stroke of the Y-axis slider, the Y-axis slider driving the trigger rack to move by triggering the trigger block;

[0025] The trigger rack meshes with the drive gear through the rack portion, and the rack portion is offset from the Y-axis slider in the Z-axis direction, wherein the Z-axis direction is perpendicular to the XY plane of the print head movement.

[0026] Optionally, the trigger member is provided with a first trigger protrusion protruding outward. In the working position, the first trigger protrusion is located on the side close to the drive gear and within the sliding stroke of the Y-axis slider, so that the trigger member can be rotated from the working position to the initial position by pushing the first trigger protrusion through the Y-axis slider.

[0027] Optionally, the trigger member is further provided with a second trigger protrusion, wherein the first trigger protrusion and the second trigger protrusion are symmetrically arranged about the center line of the trigger member;

[0028] The first trigger protrusion and the second trigger protrusion have guide slopes at their two ends along the center line, and the tops of the two guide slopes on the same side of the center line are close to each other.

[0029] Optionally, the sliding directions of the trigger rack and the drive rack relative to the base are opposite, and during the process of the Y-axis slider triggering the drive rack, it first passes the position of the trigger element and then slides to the position of triggering the trigger rack.

[0030] Optionally, the trigger includes a rod and a transmission component connected to each other. The transmission component includes a rotating part with an annular structure. At least a portion of the outer circumferential surface of the rotating part is provided with meshing teeth that mesh with the driving teeth. The rotating part is rotatably mounted on the base. The trigger is rotatably connected to the base through the rotating part. In the direction of the rotation axis, the rod and the rotating part are misaligned.

[0031] Optionally, the rod is slidably disposed relative to the transmission member along the center line; in the working position, the rod slides away from the tool head under the action of the cutting assembly and can abut against the base or the frame.

[0032] Optionally, the transmission component further includes a sleeve portion, to which the rotating portion is connected; the rod body is slidably inserted into the sleeve portion; or,

[0033] It also includes a slider shaft, and the rotating part is rotatably mounted on the base via the slider shaft;

[0034] The rod body is provided with a strip-shaped hole, the extension direction of the strip-shaped hole is consistent with the center line of the rod body, and the slider shaft is slidably engaged with the strip-shaped hole so that the rod body can slide along the extension direction of the strip-shaped hole.

[0035] Optionally, it also includes a position detection mechanism, wherein the position detection device is mounted on at least one of the base and the trigger member to detect the rotational position of the trigger member.

[0036] Optionally, the position detection mechanism includes a magnet and a Hall sensor. In the region near the rotation axis, one of the base and the trigger is provided with a magnet, and the other with a Hall sensor. In the working position, the magnet and the Hall sensor are opposite each other to detect that the trigger has rotated to the working position; or...

[0037] The position detection mechanism includes a displacement switch and a detection structure. One of the trigger and the base is provided with a displacement switch, and the other is provided with a detection structure. When the trigger rotates to the working position, the detection structure triggers the displacement switch.

[0038] Optionally, the transmission end of the trigger is provided with meshing teeth; the driving assembly includes a drive motor and a second transmission mechanism, the drive motor is mounted on the base or the frame, and engages with the meshing teeth of the trigger through the second transmission mechanism to drive the trigger to rotate;

[0039] Wherein, the second transmission mechanism includes one or more second transmission gears, and the drive shaft of the drive motor is inserted into and connected to the second transmission gear; or,

[0040] The second transmission mechanism includes a worm gear, and the drive shaft of the drive motor is inserted and connected to the worm gear; or,

[0041] The transmission end of the trigger is directly connected to the drive shaft of the drive motor.

[0042] Optionally, the centerline of the trigger is parallel to the X-axis in the working position, wherein the Y-axis is the axis of the movement direction of the X-axis system, and the X-axis is the axis of the direct sliding direction of the tool head.

[0043] Optionally, the rotation axis of the trigger is parallel to the XY plane of the 3D printing device.

[0044] Optionally, the line connecting the trigger point of the trigger element and the center point of its rotating support segment is projected along a direction perpendicular to the XY plane as a center line, and the center line forms an angle with the rotation axis.

[0045] Alternatively, the normal direction of the trigger point of the trigger element at the time of triggering forms an angle with the rotation axis of the trigger element.

[0046] Optionally, the line connecting the trigger point of the trigger and the center point of its rotating support section is projected along the rotation axis of the trigger and taken as the center line, which is perpendicular to the rotation axis.

[0047] Alternatively, the normal direction of the trigger point of the trigger element is parallel to the rotation axis of the trigger element when it is triggered.

[0048] Optionally, the trigger includes a trigger arm and a trigger structure. The trigger arm is rotatably mounted on the frame or the base and is disposed adjacent to the frame. The rotation axis of the trigger arm is perpendicular to the extension direction of the trigger arm and parallel to the XY plane of the XY motion mechanism. The trigger part protrudes from the side of the trigger arm away from the frame.

[0049] The triggering structure has an initial position and a working position. In the initial position, the triggering structure is located outside the movement space of the tool head. In the working position, the triggering structure is located in the movement space and is used to trigger the cutting assembly to cut the material.

[0050] Optionally, the XY motion mechanism includes a Y-axis slider, which is slidably mounted on the frame;

[0051] The triggering component also includes a drive rod, which is bent and connected to the triggering arm. The rotation axis is located at the bent connection. The drive rod is located adjacent to the frame and is partially located within the sliding stroke of the Y-axis slider.

[0052] Optionally, in the initial position, the trigger structure is located above the sliding space of the Y-axis slider; the Y-axis slider first passes through the lower region of the trigger and then slides to abut against the drive rod, so that the trigger structure rotates from the initial position to the working position.

[0053] Optionally, the trigger further includes a guide block connected to the trigger arm. In the working position, the guide block is located within the sliding stroke of the Y-axis slider. After the trigger structure rotates from the initial position to the working position by pushing the drive rod against the Y-axis slider, the trigger structure rotates back to the initial position by pushing the guide block against the Y-axis slider.

[0054] Optionally, the guide block is disposed between the trigger arm and the trigger structure, and the two end faces of the guide block along the extension direction of the trigger arm respectively form guide slopes.

[0055] Optionally, it also includes a drive motor, which is mounted on the frame or the base, and its drive shaft is either directly or in a transmission connection to the trigger arm.

[0056] Optionally, it also includes a base, which has a plate-like structure and is fitted to the inner wall of the frame; the triggering component is mounted to the frame via the base;

[0057] The cutter triggering device also includes a reset spring, which is disposed between the trigger arm and the base or the frame, so that the triggering structure returns to the initial position after the external force on the triggering component disappears.

[0058] Optionally, it also includes an elastic positioning structure, the elastic positioning structure including a protrusion structure disposed on the base or the frame; during the process of the trigger structure rotating from the initial position to the working position, the trigger arm passes over the elastic positioning structure and abuts against the trigger arm in the working position to restrict the trigger arm from driving the trigger structure to rotate towards the initial position.

[0059] Optionally, the elastic positioning structure further includes a limiting structure disposed on the base or the frame; when the trigger arm is in the working position, the limiting structure is located on the other side of the trigger arm opposite to the elastic positioning structure, and is used to limit the extreme rotational position of the trigger arm.

[0060] Optionally, the positioning structure further includes an elastic arm, one end of which is connected to the base, and the other end of which is provided with the protrusion structure and the limiting structure.

[0061] Optionally, the triggering structure includes a rod body that is slidably connected to the triggering arm in a direction perpendicular to the plane of rotation of the triggering arm; in the working position, one end of the rod body can extend out of the triggering arm and abut against the base or the frame;

[0062] The triggering structure further includes a sleeve portion connected to the triggering arm, and the rod body slidably inserted into the sleeve portion; or,

[0063] The rod body is provided with a strip-shaped hole, and the extension direction of the strip-shaped hole is consistent with the axial direction of the rod body; the trigger arm is provided with a slider that cooperates with the strip-shaped hole.

[0064] Optionally, a limiting groove is provided on the base, and a limiting ball is installed in the limiting groove;

[0065] The trigger is provided with a standby groove and a working groove. The trigger is rotatably connected to the base. The trigger has an initial position and a working position. In the initial position, the trigger is located outside the movement space of the tool head, and the limiting ball is in limiting engagement with the standby groove. In the working position, the trigger is at least partially located in the movement space, and the limiting ball is in limiting engagement with the working groove, so as to trigger the cutting assembly to cut the material through the trigger.

[0066] The drive assembly is mounted on the base and is used to drive the trigger to rotate.

[0067] Optionally, the trigger includes a transmission component and a rod body connected to each other. The transmission component includes a rotating part and a connecting plate. The rotating part is rotatably mounted on the base. The connecting plate is connected to the rotating part and is located on the side of the rotating part closer to the base. The standby groove and the working groove are both provided on the connecting plate. Within the rotation stroke of the trigger, the limiting ball is pressed against the connecting plate.

[0068] The trigger is rotatably connected to the base via the transmission component.

[0069] Optionally, the center of the working groove forms a central plane with the rotation axis of the rotating part; the connecting plate is provided along the outer periphery of the rotating part, and two standby grooves are provided thereon, and the two standby grooves are symmetrically arranged about the central plane.

[0070] Optionally, the connecting plate is further provided with a communicating groove; each of the standby grooves is connected to the working groove through the communicating groove, and along the direction of the rotation axis of the rotating part, the recess depth of the communicating groove is less than the depth of the standby groove and the working groove.

[0071] Optionally, the cutter triggering device further includes a reset torsion spring, which is movably mounted on the base, with one side fixed relative to the base and the other side being a free end;

[0072] Along the first rotational direction from the initial position to the working position, the free end is located outside the working position so that it can abut against the reset torsion spring when the trigger rotates to the outside of the working position.

[0073] Optionally, the trigger member is provided with abutting groove or abutting protrusion; the free end of the reset torsion spring is located within the stroke of the abutting groove or abutting protrusion, so that when the trigger member rotates to the outside of the working position along the first rotation direction, it abuts against the reset torsion spring through the abutting groove or abutting protrusion.

[0074] Optionally, the center of the limiting ball, the rotation axis of the trigger, and the center line of the rod in the working position are coplanar.

[0075] Optionally, a compression spring is installed between the limiting groove and the limiting ball.

[0076] Optionally, the cutter triggering device further includes a reset torsion spring;

[0077] The base is provided with a limiting groove, and a limiting ball is installed in the limiting groove;

[0078] The triggering assembly includes a trigger element, which has a standby groove, a working groove, and an over-rotation groove. The trigger element is rotatably mounted on the base. Within its rotational stroke, the trigger element is sequentially configured with an initial position, a working position, and an over-rotation position along a first rotational direction. In the initial position, the trigger element is located outside the movement space of the tool head, and a limiting ball engages with the standby groove for limiting. In the working position, the trigger element is at least partially located within the movement space, and the limiting ball engages with the working groove for limiting, thereby triggering the cutting assembly to cut material. In the over-rotation position, the limiting ball engages with the over-rotation groove for limiting, thereby positioning the trigger element at an over-rotation position exceeding the working position. The first rotational direction refers to the direction from the initial position to the working position with a minimum rotation angle.

[0079] The reset torsion spring is movably mounted on the base, with its first side abutting against the base or the drive assembly, and its second side located in the section of the trigger member's rotational stroke along the first rotational direction that exceeds the working position or the over-rotation position, so that when the trigger member rotates along the first rotational direction to exceed the over-rotation position, it will return to the over-rotation position under the reset force of the reset torsion spring.

[0080] The drive assembly is mounted on the base and is used to drive the trigger to rotate.

[0081] Optionally, the base has a U-shaped structure, including a base plate, a first side plate, and a second side plate, wherein the first side plate and the second side plate are arranged opposite to each other and connected to the same side of the base plate.

[0082] Optionally, the drive assembly is disposed inside the U-shaped structure and is respectively located close to the first side plate and the second side plate; the reset torsion spring is movably mounted on the base plate; and the limiting ball is disposed on the base plate.

[0083] Optionally, the 3D printing equipment further includes a Y-axis slider, which is slidably mounted on the frame; the trigger includes a rod and a transmission component.

[0084] The transmission component includes a sleeve portion, and the rod body is inserted into and connected to the sleeve portion; one end of the sleeve portion is rotatably mounted on the base and drives the assembly; the sleeve portion is provided with a first trigger protrusion and a second trigger protrusion on both radially sides; or,

[0085] The triggering assembly further includes a slider shaft, and the transmission component includes a rotating part, which is rotatably mounted on the base via the slider shaft; the rod body is provided with a strip-shaped hole, the extension direction of the strip-shaped hole is consistent with the center line of the rod body, the slider shaft is slidably engaged with the strip-shaped hole so that the rod body slides along the extension direction of the strip-shaped hole, and the rod body is provided with a first trigger protrusion and a second trigger protrusion on both radial sides respectively;

[0086] In the initial position, both the first trigger protrusion and the second trigger protrusion are located outside the stroke of the Y-axis slider; in the working position, at least the first trigger protrusion is located within the stroke of the Y-axis slider; and in the over-rotation position, at least the second trigger protrusion is located within the stroke of the Y-axis slider.

[0087] Optionally, the transmission component further includes a rotating part connected to one end of the sleeve portion. The rotating part is rotatably mounted on the base to drive the sleeve and the rod to rotate. The outer periphery of the rotating part meshes with the drive teeth.

[0088] There is a clearance space between the drive gear and the rotating part for the rod to rotate. When the rod is located in the clearance space, the reset torsion spring abuts against the trigger member, and the Y-axis slider can make the rod be located in the clearance space by pushing against the second trigger protrusion. In at least one position, the Y-axis slider can pass over the second trigger protrusion.

[0089] Optionally, the 3D printing equipment further includes a Y-axis slider that slides along the Y-axis direction. The Y-axis slider can rotate the trigger by pushing against the drive assembly. The Y-axis slider first pushes the drive assembly to put the trigger in the working position, and then the Y-axis slider retracts in the opposite direction to the Y-axis position that rotates the trigger to the working position.

[0090] Optionally, the center of the working groove forms a central plane with the rotation axis of the trigger; the trigger is provided with two standby grooves and two over-rotation grooves symmetrical about the central plane.

[0091] A second aspect of the present invention provides a 3D printing device, including a frame, a tool head, a cutting assembly, and a cutting triggering device as described in any of the preceding claims, wherein the tool head is movably mounted on the frame, the cutting assembly is disposed on the tool head, and the base is mounted on the frame;

[0092] In the initial position, the trigger is disposed adjacent to the frame and outside the movement space of the tool head; in the working position, the trigger is at least partially located within the movement space of the tool head, and its trigger end is disposed opposite to the cutting assembly for triggering the cutting assembly to cut the material.

[0093] Optionally, it also includes a wiping nozzle assembly and a trash can arranged within the frame, the cutter triggering device being located close to the wiping nozzle assembly and / or the trash can, and the three sharing the space within the frame in the Y-axis direction;

[0094] And / or, projected along the X-axis, the cutter triggering device has an overlapping area with the wiping nozzle assembly or the trash can.

[0095] Optionally, the frame and the base are integrally formed.

[0096] A third aspect of the present invention provides a cutter triggering device for a 3D printing device, the 3D printing device including a frame, an XY motion mechanism, a tool head, and a cutting assembly, the XY motion mechanism being mounted on the frame, the tool head being movably disposed within the frame via the XY motion mechanism, and the cutting assembly being disposed on the tool head;

[0097] The cutter triggering device includes a triggering assembly, which includes a triggering element, which includes a triggering arm and a triggering structure. The triggering arm is rotatably mounted on the frame and is disposed adjacent to the frame. The rotation axis of the triggering arm is perpendicular to the extension direction of the triggering arm and parallel to the XY plane of the XY motion mechanism. The triggering structure protrudes from the side of the triggering arm away from the frame.

[0098] The triggering structure has an initial position and a working position. In the initial position, the triggering structure is located outside the movement space of the tool head. In the working position, the triggering structure is located in the movement space and is used to trigger the cutting assembly to cut the material.

[0099] Optionally, the XY motion mechanism includes a Y-axis slider, which is slidably mounted on the frame;

[0100] The triggering component also includes a drive rod, which is bent and connected to the triggering arm. The rotation axis is located at the bend between the two. The drive rod is located adjacent to the frame and is partially located within the sliding stroke of the Y-axis slider.

[0101] Optionally, in the initial position, the trigger structure is located above the sliding space of the Y-axis slider; the Y-axis slider first passes through the area below the trigger structure and then slides to abut against the drive rod, so that the trigger structure rotates from the initial position to the working position.

[0102] Optionally, the trigger further includes a guide block connected to the trigger arm. In the working position, the guide block is located within the sliding stroke of the Y-axis slider. After the trigger structure rotates from the initial position to the working position by pushing the drive rod against the Y-axis slider, the trigger structure rotates back to the initial position by pushing the guide block against the Y-axis slider.

[0103] Optionally, the guide block is disposed between the trigger arm and the trigger structure.

[0104] Optionally, the guide block has guide ramps formed on its two end faces along the extension direction of the trigger arm.

[0105] Optionally, it also includes a drive motor, which is mounted on the frame and whose drive shaft is either directly or in a transmission connection to the trigger arm.

[0106] Optionally, it also includes a base, which has a plate-like structure and is fitted to the inner wall of the frame; the triggering component is mounted to the frame via the base;

[0107] The aforementioned knife triggering device also includes a reset spring, which is disposed between the triggering arm and the base so that the triggering structure returns to the initial position after the external force on the triggering component disappears.

[0108] Optionally, it also includes an elastic positioning structure, the elastic positioning structure further including a protrusion structure disposed on the base or the frame; during the process of the trigger structure rotating from the initial position to the working position, the trigger arm passes over the elastic positioning structure and abuts against the trigger arm in the working position to restrict the trigger arm from driving the trigger structure to rotate towards the initial position.

[0109] Optionally, the elastic positioning structure further includes a limiting structure disposed on the base or the frame; when the trigger arm is in the working position, the limiting structure is located on the other side of the trigger arm opposite to the elastic positioning structure, and is used to limit the extreme rotational position of the trigger arm.

[0110] Optionally, the positioning structure further includes an elastic arm, one end of which is connected to the base, and the other end of which is provided with the protruding structure.

[0111] Optionally, the triggering structure includes a rod body that is slidably connected to the triggering arm in a direction perpendicular to the plane of rotation of the triggering arm; in the working position, one end of the rod body can extend out of the triggering arm and abut against the base or the frame;

[0112] The triggering structure further includes a sleeve portion connected to the triggering arm, and the rod body slidably inserted into the sleeve portion; or,

[0113] The rod body is provided with a strip-shaped hole, and the extension direction of the strip-shaped hole is consistent with the axial direction of the rod body; the trigger arm is provided with a slider that cooperates with the strip-shaped hole.

[0114] Optionally, the trigger is a cylindrical or conical structure with a chamfered end.

[0115] A fourth aspect of the present invention provides a cutter triggering device for a 3D printing device, the 3D printing device including a tool head and a cutting assembly, the cutting assembly being disposed on the tool head; the cutter triggering device includes a base, a triggering assembly, and a driving assembly;

[0116] The base is provided with a limiting groove, and a limiting ball is installed in the limiting groove;

[0117] The triggering component includes a trigger member, which has a standby groove and a working groove. The trigger member is rotatably connected to the base and has an initial position and a working position. In the initial position, the trigger member is located outside the movement space of the tool head, and the limiting ball is in a limiting engagement with the standby groove. In the working position, the trigger member is at least partially located in the movement space, and the limiting ball is in a limiting engagement with the working groove, so as to trigger the cutting component to cut the material through the trigger member.

[0118] The drive assembly is mounted on the base and is used to drive the trigger to rotate.

[0119] Optionally, the trigger includes a transmission component and a rod body connected to each other. The transmission component includes a rotating part and a connecting plate. The rotating part is rotatably mounted on the base. The connecting plate is connected to the rotating part and is located on the side of the rotating part closer to the base. The standby groove and the working groove are both provided on the connecting plate. Within the rotation stroke of the trigger, the limiting ball is pressed against the connecting plate.

[0120] The trigger is rotatably connected to the base via the transmission component.

[0121] Optionally, in the direction of the rotation axis of the rotating part, the rod body is offset from the rotating part, and the rod body is slidably disposed relative to the transmission member along the center line of the rod body; in the working position, the rod body slides away from the tool head under the action of the cutting assembly, and can abut against the base or the frame of the 3D printing equipment;

[0122] The transmission component further includes a sleeve portion, and the rotating portion is connected to one end of the sleeve portion; the rod body is slidably inserted into the sleeve portion; or,

[0123] The cutter triggering device further includes a slider shaft, and the rotating part is rotatably mounted on the base via the slider shaft;

[0124] The rod body is provided with a strip-shaped hole, the extension direction of which is consistent with the center line of the rod body, and it slides in conjunction with the slider shaft.

[0125] Optionally, the drive assembly includes a trigger rack, a drive gear, and a first transmission mechanism, wherein the trigger rack is slidably mounted on the base, and the drive gear is rotatably mounted on the base and meshes with the trigger rack;

[0126] The outer periphery of the rotating part is provided with meshing teeth, which are driven to engage with the drive gear through the first transmission mechanism.

[0127] Optionally, the first transmission mechanism includes an odd number of first transmission gears that mesh with each other sequentially, wherein the two most distant first transmission gears mesh with the driving gear and the meshing teeth on the trigger element, respectively; or,

[0128] The first transmission mechanism includes a drive rack, which is slidably mounted on the base along a direction parallel to the trigger rack, and is connected to the trigger rack via the drive gear;

[0129] The meshing teeth on the rotating part mesh with the driving rack.

[0130] Optionally, the center of the working groove forms a central plane with the rotation axis of the rotating part; the connecting plate is provided along the outer periphery of the rotating part, and two standby grooves are provided thereon, and the two standby grooves are symmetrically arranged about the central plane.

[0131] Optionally, the connecting plate is further provided with a communicating groove; each of the standby grooves is connected to the working groove through the communicating groove, and along the direction of the rotation axis of the rotating part, the recess depth of the communicating groove is less than the depth of the standby groove and the working groove.

[0132] Optionally, the cutter triggering device further includes a reset torsion spring, which is movably mounted on the base, with one side fixed relative to the base and the other side being a free end;

[0133] Along the first rotational direction from the initial position to the working position, the free end is located outside the working position so that it can abut against the reset torsion spring when the trigger rotates to the outside of the working position.

[0134] Optionally, the trigger member is provided with abutting groove or abutting protrusion; the free end of the reset torsion spring is located within the stroke of the abutting groove or abutting protrusion, so that when the trigger member rotates to the outside of the working position along the first rotation direction, it abuts against the reset torsion spring through the abutting groove or abutting protrusion.

[0135] Optionally, the center of the limiting ball, the rotation axis, and the center line of the rod in the working position are arranged in the same plane.

[0136] Optionally, a compression spring is installed between the limiting groove and the limiting ball.

[0137] A fifth aspect of the present invention provides a 3D printing device, including a frame, an XY motion mechanism, a tool head, and a controller. The frame includes a rear portion and side portions connected to both ends of the rear portion, the side portions having a Y-axis mounting structure. The XY motion mechanism includes a Y-axis slide rail and a Y-axis slider, the Y-axis slide rail being mounted on the Y-axis mounting structure, and the Y-axis slider being slidably mounted on the Y-axis slide rail. The tool head is mounted on the XY motion mechanism.

[0138] The side portion has a Y-axis zero-position surface in the region near the rear portion;

[0139] The 3D printing equipment further includes a cutter triggering device, which comprises a base, a triggering component, and a driving component. The base is installed on the side portion near the rear portion. The triggering component includes a trigger member, which is rotatably connected to the base about a rotation axis perpendicular to the XY plane of the XY motion mechanism. The driving component includes a trigger driving component and a first transmission mechanism. The trigger driving component is slidably disposed on the base along a direction parallel to the Y-axis slide rail and drives the trigger member to rotate through the first transmission mechanism.

[0140] The Y-axis zero-position surface and the trigger drive are both located within the sliding stroke of the Y-axis slider, and the Y-axis zero-position surface is closer to the rear side than the trigger drive, so that the trigger drive is triggered first to drive the trigger to rotate during the sliding of the Y-axis slider toward the rear side, and then touches the Y-axis zero position.

[0141] When the tool head is performing zero-position verification, the Y-axis slider is controlled to slide towards the rear. When a second collision is detected, it is determined that the Y-axis slider has touched the Y-axis zero-position surface. The position of the tool head at this time is taken as its zero position in the Y-axis direction.

[0142] Optionally, a reset torsion spring is provided between the trigger and the base so that the trigger can rotate in the opposite direction under the action of the reset torsion spring when the external force on it disappears.

[0143] Optionally, when the tool head performs zero-position verification, if the trigger is in the initial position,

[0144] Control the Y-axis slider to slide towards the rear until it passes the trigger and pushes against the trigger drive until the Y-axis slider collides with the Y-axis zero surface, which is the first collision of the Y-axis slider.

[0145] Then, the Y-axis slider is controlled to slide a first preset distance away from the rear side until it is separated from the trigger drive. At the same time, the trigger rotates in the opposite direction to the over-rotation position under the action of the reset torsion spring.

[0146] Then, control the Y-axis slider to slide towards the rear until the Y-axis slider slides to touch the Y-axis zero position again, which is the second collision of the Y-axis slider.

[0147] Wherein, the over-rotation position is located where the trigger element exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger element abuts against the reset torsion spring; the first rotation direction is the direction in which the trigger element rotates from the initial position to the working position.

[0148] Optionally, the trigger element has a second trigger protrusion protruding radially. In the initial position, the second trigger protrusion is located on the side of the trigger element near the side portion. When the tool head is performing zero-position verification, if the trigger element is in a position other than the initial position,

[0149] Control the Y-axis slider to slide towards the rear until it pushes against the second trigger protrusion, causing the trigger to rotate until the Y-axis slider passes the second trigger protrusion and separates from the second trigger protrusion;

[0150] The Y-axis slider is controlled to continue sliding towards the rear until it collides with the Y-axis zero-position surface, which is the first collision. After that, the Y-axis slider is controlled to move in the opposite direction a second preset distance. At the same time, the trigger drive is rotated in the opposite direction to the over-rotation position under the action of the reset torsion spring.

[0151] Then, control the Y-axis slider to slide towards the rear until it collides with the Y-axis zero position surface, which is the second collision.

[0152] Wherein, the over-rotation position is located where the trigger element exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger element abuts against the reset torsion spring; the first rotation direction is the direction in which the trigger element rotates from the initial position to the working position.

[0153] Optionally, a limiting groove is provided on the base, and a limiting ball is installed in the limiting groove;

[0154] The trigger is provided with a standby groove, a working groove, and a rotation groove; the initial position, working position, and rotation position are sequentially arranged in the first rotation direction of the trigger. In the initial position, the limiting ball is limited to the standby groove; in the working position, the limiting ball is limited to the working groove; and in the rotation position, the limiting ball is limited to the rotation groove.

[0155] Optionally, it also includes a drive motor, which is mounted on the rear side and is used to drive the Y-axis slider to slide.

[0156] The collision of the Y-axis slider is determined by detecting the change in the current of the drive motor. The second collision of the Y-axis slider occurs when the second change in the current of the drive motor occurs.

[0157] The 3D printing equipment also includes an encoder connected to the drive motor. When a second change in the drive motor is detected, the current angle of the encoder is recorded as zero.

[0158] Optionally, it also includes a nozzle assembly and a printing panel, wherein the nozzle assembly is disposed on the inner side of the rear portion; the rotation axis of the trigger is perpendicular to the XY plane of the 3D printing device, and the line connecting the trigger point of the trigger and the center point of its rotation support section is used as the center line, and the center line of the trigger is perpendicular to the Y-axis in the working position;

[0159] Projecting along the X-axis, the centerline of the trigger is located inside the rear side of the printing platform, and the distance between the centerline of the trigger and the side of the printing panel near the rear side is between 0-25mm; or,

[0160] Projected along the X-axis, the centerline of the trigger is located inside the wiping nozzle assembly, and the distance between the centerline of the trigger and the shape center of the wiping nozzle assembly is between 1 and 30 mm.

[0161] In the cutting trigger device of the present invention, when the trigger is in the initial position (at which time the cutter is not triggered and obviously does not work), the trigger is located outside the movement space of the tool head and parallel to the Y-axis direction. Therefore, the trigger does not occupy the movement space of the tool head. This makes the cutting trigger device effectively save the internal space of the 3D printing equipment and significantly increase the movement space of the tool head 700. It is a significant innovation and improvement compared to the cutting trigger device in the existing 3D printing equipment (which occupies the movement space of the tool head even in the initial position).

[0162] Other beneficial effects of the present invention will be explained in detail through the introduction of specific technical features and technical solutions in specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by these technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0163] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.

[0164] Figure 1 A schematic diagram of the trigger element in the initial position in a preferred embodiment of the cutter triggering device provided by the present invention;

[0165] Figure 2 An exploded view of a preferred embodiment of the cutter triggering device provided by the present invention;

[0166] Figure 3 A top view of a preferred embodiment of the cutter triggering device provided by the present invention;

[0167] Figure 4 for Figure 3 A sectional view along line AA.

[0168] Figure 5 A schematic diagram of a preferred embodiment of the rotation mode of the trigger element in the cutter triggering device provided by the present invention;

[0169] Figure 6 A schematic diagram of another preferred embodiment of the rotation mode of the trigger element in the cutter triggering device provided by the present invention;

[0170] Figure 7 A schematic diagram of a preferred embodiment of the base in the cutter triggering device provided by the present invention;

[0171] Figure 8 An exploded view of a preferred embodiment of the triggering component in the cutter triggering device provided by the present invention;

[0172] Figure 9An exploded view of a preferred embodiment of the drive component in the cutter triggering device provided by the present invention;

[0173] Figures 10-12 These are schematic diagrams showing the structure of the trigger member rotating to the working position, the over-rotation position, and the avoidance position in a preferred embodiment of the cutter triggering device provided by the present invention.

[0174] Figure 13 A schematic diagram of another preferred embodiment of the cutter triggering device provided by the present invention;

[0175] Figure 14 A partial structural schematic diagram of a preferred embodiment of the 3D printing device provided by the present invention;

[0176] Figure 15 A top view of a partial structure of the trigger element in its initial position in a preferred embodiment of the 3D printing device provided by the present invention;

[0177] Figure 16 for Figure 15 The illustrated embodiment shows a top view of a portion of the structure when the trigger is rotated to the working position;

[0178] Figure 17 for Figure 16 A magnified view of a portion of the text;

[0179] Figure 18 A preferred embodiment of the 3D printing device provided by the present invention is shown in the structural diagram of the cutting component and the cutting blade triggering component in the tool head when they cooperate to cut material.

[0180] Figure 19 A schematic diagram of a preferred embodiment of the transmission component in the cutter triggering device provided by the present invention;

[0181] Figure 20 for Figure 14 A magnified view of a portion of point I in the middle.

[0182] In the picture:

[0183] 110. Frame; 111. Rear section; 113. Side section; 1131. Y-axis zero plane; 115. Front section;

[0184] 125. Y-axis slide rail; 126. Y-axis slider; 1261. Slider protrusion; 127. X-axis slide rail;

[0185] 230; Printing platform;

[0186] 400. Nozzle assembly;

[0187] 500. Trash can;

[0188] 600. Cutting blade triggering device;

[0189] 610. Base; 611. Base plate; 6111. Sliding mounting groove; 6112. Limiting groove hole; 612. First side plate; 613. Second side plate; 614. Limiting groove; 617. Bending plate; 618. Elastic positioning structure; 6181. Elastic arm; 6182. Protrusion structure; 6183. Limiting structure;

[0190] 620. Trigger assembly; 621. Trigger element; 6211. Trigger end; 6212. Rod body; 6213. Transmission element; 6213a. Rotating part; 6213b. Sleeve part; 6213c. Connecting plate; 6213d. Abutting groove; 6214. First trigger protrusion; 6214a. Guide slope; 6215. Second trigger protrusion; 6216. Limiting element; 6218a. Standby groove; 6218b. Working groove; 6218c. Over-rotation groove; 6218d. Connecting groove; 6221. Trigger arm; 6221a. Limiting groove; 6222. Trigger structure; 6223. Drive rod; 6224. Guide block; 623. Rotating shaft;

[0191] 630, Drive assembly; 631, Trigger rack; 6311, Mounting hole; 6312, Rack section; 6313, Trigger block; 632, Drive gear; 633, Drive rack;

[0192] 640. Restricted ball;

[0193] 650. Return torsion spring;

[0194] 660, Limit axis;

[0195] 700. Tool head; 710. Cutting assembly. Detailed Implementation

[0196] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0197] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0198] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0199] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0200] See appendix Figure 1-20 This invention provides a 3D printing device, including a frame 110, a tool head 700, a cutting assembly 710, and a cutting trigger device 600. The tool head 700 is movably mounted on the frame 110, the cutting assembly 710 is disposed on the tool head 700, and the cutting trigger device 600 is mounted on the frame 110. The frame 110 is a square frame 110, including a rear side 111 disposed opposite to each other, side sides 113 connected to both ends of the rear side 111, and a front side 115 opposite to the rear side 111 and connecting the two side sides 113, that is, the rear side 111, one side side 113, the front side 115, and the other side side 113 are connected end to end in sequence. The cutter trigger device 600 can be installed on only one side 113, or both side 113 can have the cutter trigger device 600 installed on each side 113. The 3D printing equipment also includes an X-axis slide rail 127, an X-axis slider, a Y-axis slide rail 125, and a Y-axis slider 126. Each side 113 is equipped with a Y-axis slide rail 125, and each Y-axis slide rail 125 is slidably mounted with a Y-axis slider 126. The two ends of the X-axis slide rail 127 are connected to the Y-axis sliders 126 on both sides, and the X-axis slider is slidably mounted on the X-axis slider. The tool head 700 is connected to the X-axis slider. Thus, driven by the motion motor, the tool head 700 moves along the X-axis and Y-axis directions by sliding the X-axis slider and the Y-axis slider 126, thereby printing on the printing platform 230. The motion motor is installed at the rear 111, and the wiping nozzle assembly 400 and the waste bin 500 of the 3D printing equipment are located near the rear 111.

[0201]

Example 1

[0202] See appendix Figure 1-13 The present invention provides a cutter triggering device 600 for a 3D printing device. The 3D printing device includes a frame 110, a tool head 700, and a cutting assembly 710. The cutting assembly 710 is disposed on the tool head 700, and the tool head 700 is mounted on the frame. It operates by moving in the X-axis and / or Y-axis directions of the 3D printing device. The cutter triggering device 600 includes a base 610, a triggering assembly 620, and a driving assembly 630.

[0203] The triggering assembly 620 includes a trigger member 621, which is rotatably connected to the base 610. The trigger member has an initial position and a working position. In the initial position, the trigger member is located outside the movement space of the tool head. In the working position, the trigger member is at least partially located in the movement space and is used to trigger the cutting assembly 710 to cut the material.

[0204] The drive assembly 630 is mounted on the base 610 and is used to drive the trigger 621 to rotate.

[0205] For 3D printing equipment, a cutting assembly 710 (including a cutter) is usually set on the tool head 700 to cut the 3D printing material. The cutter of the present invention is triggered by the cutter triggering device 600 with the above-mentioned specific structure. Specifically, it is triggered by the trigger member 621 in the triggering assembly 620 of the cutter triggering device 600.

[0206] Because in the cutter triggering device 600 of the present invention, when the trigger 621 is in the initial position (at which time the cutter is not triggered and obviously does not work), the trigger 621 is located outside the movement space of the tool head 700 and parallel to the Y-axis direction. Therefore, the trigger 621 does not occupy the movement space of the tool head 700. This makes the cutter triggering device 600 effectively save the internal space of the 3D printing equipment and significantly increase the movement space of the tool head 700. This is a significant innovation and improvement compared to the existing cutter triggering device 600 in the 3D printing equipment (which occupies the movement space of the tool head 700 even in the initial position). In one embodiment, when viewed along the Z-axis direction or along the direction perpendicular to the XY plane, the trigger 621 and the Y-axis slider 126 have an overlapping area at at least one position in the initial position. It can be understood that, due to positional interference, the movement limit of the tool head 700 along the X-axis will not exceed the Y-axis slider 126.

[0207] When the trigger 621 is in the working position, it needs to contact the cutter to trigger it. At this time, the trigger 621 will be at least partially located in the movement space of the tool head 700 to trigger the cutting assembly 710 to cut the material. The transition between the initial position and the working position of the trigger 621 is achieved by the drive assembly 630 installed on the base 610. The preferred structural form of the drive assembly 630 will be described later.

[0208] It should be noted that in this invention, the frame and the base can be separate structures, that is, they are manufactured and processed separately, and then the base is installed on the frame by screws, snap-fit, or other means; or the frame and the base can be integrated into one structure, such as an integral molding structure, an integral injection molding structure, or a welded structure, that is, the frame and the base form a single part, such as by casting in one piece, and then only a few high-precision mounting surfaces need to be precision machined.

[0209] like Figures 15-17 As shown, the 3D printing equipment also includes a nozzle assembly 400 and a trash can 500 arranged within the frame. The cutter triggering device 600 is positioned close to the nozzle assembly 400 and / or the trash can 500, and the three share the space within the frame 110 in the Y-axis direction. In other words, projected along the X-axis direction, the cutter triggering device 600 and the nozzle assembly 400 and / or the trash can 500 have an overlapping area. Thus, in the Y-axis direction, the cutter triggering device 600 and the nozzle assembly 400 and / or the trash can 500 share the space in the Y-axis direction within the frame, thereby further reducing the space occupied in the Y-axis direction and reducing the overall size of the 3D printing equipment in the Y-axis direction.

[0210] In the first embodiment, the rotation axis of the trigger 610 can be perpendicular to the XY plane of the 3D printing device, such as... Figure 1 and Figure 4 As shown, in these embodiments, the line connecting the trigger point of the trigger 610 and the center point of its rotating support section is projected along the rotation axis of the trigger 610 as a center line. This center line can be perpendicular to the rotation axis of the trigger 610; alternatively, the normal direction of the trigger point of the trigger 610 during triggering is perpendicular to the rotation axis of the trigger 610, or in other words, the direction of the triggering force of the trigger 610 during triggering is perpendicular to the rotation axis of the trigger 610.

[0211] In the second embodiment, the rotation axis of the trigger 610 is parallel to the XY plane of the 3D printing equipment. For example... Figure 6 and Figure 13 As shown. In these embodiments, one approach is to project along a direction perpendicular to the XY plane, with the line connecting the trigger point of the trigger 610 and the center point of its rotating support segment as a center line, which forms an angle with the rotation axis of the trigger 610; or, the normal direction of the trigger point of the trigger 610 at the time of triggering forms an angle with the rotation axis of the trigger 610; or, in other words, the direction of the triggering force of the trigger 610 at the time of triggering forms an angle with the rotation axis of the trigger 610, such as... Figure 6As shown. In another embodiment, the line connecting the trigger point of the trigger 610 and the center point of its rotating support section is used as a center line projected along the rotation axis of the trigger 610, and this center line is perpendicular to the rotation axis; or, the normal direction of the trigger point of the trigger 610 during triggering is parallel to the rotation axis of the trigger 610, or in other words, the direction of the triggering force of the trigger 610 during triggering is parallel to the rotation axis of the trigger 610, such as... Figure 13 As shown.

[0212] It should be noted that the rotating support section of the aforementioned trigger refers to the section located at the rotation axis of the trigger. In embodiments including a rotating part (described in detail below), it refers to the rotating part. The midpoint of the rotating support section refers to the center of the rotating support section in the direction of the rotation axis of the trigger 610. Both of these arrangements of the rotation axis of the trigger 621 relative to the center line can significantly save space occupied by the 3D printing equipment on the Z-axis (i.e., the axis in the height direction), further optimizing the overall structural form of the 3D printing equipment.

[0213] In one embodiment, the 3D printing device includes a frame 110 and an XY motion mechanism, wherein the tool head 700 is movably mounted on the frame 110 via the XY motion mechanism; the rotation axis of the trigger 621 is perpendicular to the XY plane of the XY motion mechanism.

[0214] With the above settings, the tool head 700 can be conveniently moved along the X and Y axes of the 3D printing equipment by the movement of the XY motion mechanism. The rotation axis of the trigger 621 is perpendicular to the XY plane, which saves space on the Z axis and facilitates the setting and positioning of the trigger 621.

[0215] In one embodiment, as described in the first embodiment above, the drive assembly 630 includes a trigger rack 631, a drive gear 632, and a first transmission mechanism. The trigger rack 631 is slidably mounted on the base 610, and the drive gear 632 is rotatably mounted on the base 610 and meshes with the trigger rack 631.

[0216] The trigger 621 is provided with meshing teeth at the rotation axis, and the meshing teeth are driven to engage with the drive gear 632 through the first transmission mechanism.

[0217] As the name suggests, the trigger rack 631 is triggered to drive the cutter. The movement of the trigger rack 631 after being triggered is transmitted through the drive gear 632 meshing with it. The drive gear 632 drives the first transmission mechanism to drive the meshing teeth to rotate. The rotation of the meshing teeth causes the trigger element 621 to rotate from the initial position to the working position.

[0218] In one embodiment, the first transmission mechanism includes one or more first transmission gears that mesh with each other sequentially. That is, there may be only one first transmission gear, or there may be multiple first transmission gears, such as an odd number, specifically three, etc. Among the one or more meshing first transmission gears, the two most distant first transmission gears mesh with the meshing teeth on the drive gear 632 and the trigger member 621, respectively.

[0219] In one embodiment, by means of an odd number of meshing first transmission gears, the transmission between the meshing teeth of the drive gear 632 and the trigger 621 can be made so that the trigger 610 can eventually rotate from the outside of the base to the inside of the base, thereby reducing the volume of the cutter triggering device 600 and smoothly realizing the rotation of the trigger 621 from the initial position to the working position.

[0220] In one embodiment, the first transmission mechanism includes a drive rack 633, which is slidably mounted on the base 610 in a direction parallel to the trigger rack 631, and is connected to the trigger rack 631 via the drive gear 632.

[0221] The meshing teeth on the trigger 621 mesh with the drive rack 633.

[0222] In this implementation, the transmission is achieved sequentially through the trigger rack 631, the drive gear 632, the drive rack 633, and the meshing teeth, and finally the trigger 621 is driven to rotate from the initial position to the working position.

[0223] In one embodiment, at least one of the trigger rack 631 and the drive rack 633 is a sliding rack, and the sliding rack is provided with a plurality of mounting holes 6311 along its sliding direction; the base 610 is provided with a sliding mounting groove 6111 corresponding to the position of the sliding rack.

[0224] The drive assembly 630 further includes a limiting member 6216, which can be selectively installed in at least one of the mounting holes 6311, with its end extending out of the mounting hole 6311 and slidingly engaging with the sliding mounting groove 6111 to adjust the sliding stroke and starting position of the sliding rack.

[0225] In one embodiment, the transmission end of the trigger 621 meshes with the drive rack 633. In the initial position, the trigger 621 and the drive rack 633 are arranged parallel to each other. The trigger end 6211 of the trigger 621 and the drive gear 632 are located on both sides of the transmission end, and the trigger rack 631 and the trigger 621 are located on the same side of the drive rack 633.

[0226] In the initial position, the trigger 621 is arranged parallel to the drive rack 633, which significantly reduces the space occupied by the trigger 621 in the movement space of the tool head 700. The two ends of the trigger 621 are the transmission end and the trigger end 6211, respectively. The transmission end meshes with the drive rack 633 and receives transmission from the drive rack 633; ​​the trigger end 6211 is used to trigger the cutting assembly 710.

[0227] In one embodiment, when projected along the rotation axis 623 of the trigger 621, the active space of the trigger 621 overlaps with the sliding stroke of the trigger rack 631.

[0228] With the above settings, the space occupied by the cutter triggering device 600 in the Y-axis direction can be significantly reduced. Of course, the overall structure of the 3D printing setup can also be reduced as a result.

[0229] In one embodiment, the 3D printing device includes a frame 110 and a Y-axis slider 126, the Y-axis slider 126 being slidably mounted on the frame 110;

[0230] The base 610 is mounted on the frame 110. In the initial position, the center line of the trigger 621 is parallel to the Y-axis slide rail 125. In the working position, the center line of the trigger 621 is perpendicular to the Y-axis slide rail 125. The trigger rack 631 is at least partially located within the sliding stroke of the Y-axis slider 126, so as to drive the trigger rack 631 to move through the sliding of the Y-axis slider 126. See Appendix Figure 2 A slider protrusion 1261 can be provided on the Y-axis slider 126, and the trigger rack 631 is driven to move through the slider protrusion 1261.

[0231] In one embodiment, the trigger rack 631 includes a rack portion 6312 and a trigger block 6313. The trigger block 6313 protrudes from the rack portion 6312 and is located within the stroke of the Y-axis slider 126. The Y-axis slider 126 drives the trigger rack 631 to move by triggering the trigger block 6313.

[0232] The trigger rack 631 meshes with the drive gear 632 through the rack portion 6312, and the rack portion 6312 is offset from the Y-axis slider 126 in the Z-axis direction, wherein the Z-axis direction is perpendicular to the XY plane of the tool head 700 movement.

[0233] With the above configuration, when the Y-axis slider 126 slides into position, it contacts the trigger block 6313 on the trigger rack 631, applying power to the trigger block 6313. The trigger block 6313 then begins to move, driving the trigger rack 631 to move, ultimately allowing the trigger member 621 to switch between the initial position and the working position, triggering the cutting assembly 710 to cut the material. Furthermore, the trigger block 6313 only requires a portion of the trigger rack 631 to protrude, which helps reduce the size of the triggering device. Moreover, by offsetting the rack portion 6312 and the Y-axis slider 126 in the Z-axis direction, the space utilization in the XY plane can be further improved.

[0234] In one embodiment, the trigger member 621 is provided with a first trigger protrusion 6214 protruding outward. In the working position, the first trigger protrusion 6214 is located on the side close to the drive gear 632 and within the sliding stroke of the Y-axis slider 126, so that the trigger member 621 can be rotated from the working position to the initial position by pushing the first trigger protrusion 6214 through the Y-axis slider 126.

[0235] The trigger 621 returns to its initial position from its working position by being pushed by the sliding of the Y-axis slider 126 through the first trigger protrusion 6214 on it. Therefore, in the working position of the trigger 621, the first trigger protrusion 6214 is positioned within the sliding stroke of the Y-axis slider 126.

[0236] In one embodiment, the trigger member 621 is further provided with a second trigger protrusion 6215, and the first trigger protrusion 6214 and the second trigger protrusion 6215 are symmetrically arranged about the center line of the trigger member 621. When the trigger member includes a rod, the two trigger protrusions are symmetrically arranged about the center line of the rod. Specifically, the first trigger protrusion and the second trigger protrusion may be respectively provided on both sides of the rod along the first rotation direction (detailed below) (radial sides when the rod is a cylindrical structure).

[0237] The trigger 621 can return from its working position to its initial position by being pushed by the sliding Y-axis slider 126 through the second trigger protrusion 6215 on it. By setting the first trigger protrusion 6214 and the second trigger protrusion 6215, the same set of triggers 621 can be used when the cutter triggering device is set on both sides, thereby improving the versatility of the cutter triggering device.

[0238] In one embodiment, the first trigger protrusion 6214 and the second trigger protrusion 6215 each form a guide slope 6214a at two ends along the centerline of the trigger (i.e., the centerline of the rod in an embodiment where the trigger includes a rod), and the free ends of the two guide slopes 6214a located on the same side of the centerline are close to each other.

[0239] With the above-mentioned guide slope 6214a, the Y-axis slider 126 can move along the guide slope 6214a. Therefore, the contact surfaces of the Y-axis slider 126 with the first trigger protrusion 6214 and the second trigger protrusion 6215 are smooth, and the corresponding components will not be damaged due to hard collision.

[0240] In one embodiment, the sliding directions of the trigger rack 631 and the drive rack 633 relative to the base 610 are opposite, and during the process of the Y-axis slider 126 triggering the drive rack 633, it first passes the position of the trigger member 621 and then moves to the position of triggering the trigger rack 631.

[0241] With the above settings, the matching of the trigger 621 and the tool head 700 can be achieved more smoothly. Since the tool head 700 must have a thickness in the Y direction, and the cutter can be set in a higher position (at this time, the trigger block 6313 is naturally in a lower position), the Y-axis slider 126 needs to pass through the position of the cutter to contact and push the trigger block 6313.

[0242] In one embodiment, the trigger 621 includes a rod 6212 and a transmission member 6213 connected to each other. The transmission member 6213 includes a rotating part 6213a, which has an annular structure and at least a portion of its outer peripheral surface is provided with meshing teeth that mesh with the drive teeth. The rotating part 6213a is rotatably mounted on the base 610. The trigger 621 is rotatably connected to the base 610 through the rotating part 6213a.

[0243] By setting the trigger 621 to the above structural form, it is convenient to process and manufacture the trigger 621, and its function can be successfully realized.

[0244] In one embodiment, the rod 6212 and the rotating part 6213a are misaligned in the direction of the rotation axis 623.

[0245] Specifically, after the cutter triggering device 600 is installed, the rod 6212 is located below the rotating part 6213a.

[0246] In addition, mounting holes 6311 are respectively provided on the upper and lower end faces of the rotating part 6213a of the trigger member 621, and a through hole can be provided on the bottom surface of the mounting hole 6311; bearings are respectively installed in the mounting holes 6311, and the rotating part 6213a is rotatably connected to the base 610 through the mounting hole 6311 and the through hole by a locking member.

[0247] In one embodiment, the rod 6212 is slidably disposed relative to the transmission member 6213 along the center line; in the working position, the rod 6212 slides away from the tool head 700 under the action of the cutting assembly 710, and can abut against the base 610 or the frame 110.

[0248] Specifically, the rod 6212 can abut in two ways: one is to abut directly against the base 610, that is, the rod 6212 directly contacts the base 610; the other is to abut directly against the frame 110, which is equivalent to indirectly abutting against the base 610. In this way, the rod 6212 directly contacts the frame 110, that is, abuts against the frame 110 of the 3D printing equipment.

[0249] In one embodiment, the transmission member 6213 further includes a sleeve portion 6213b, the rotating portion 6213a is connected to one end of the sleeve portion 6213b, and the rod body 6212 is slidably inserted into the sleeve portion 6213b.

[0250] Alternatively, in one embodiment, a sliding shaft is also included, and the rotating part 6213a is rotatably mounted on the base 610 via the sliding shaft; a strip-shaped hole is provided on the rod body 6212, the extension direction of the strip-shaped hole is consistent with the center line of the rod body 6212, and it is slidably engaged with the slider shaft, that is, the slider shaft is slidably engaged with the strip-shaped hole, so that the rod body can slide along the extension direction of the strip-shaped hole.

[0251] Both of the above implementation methods can reliably achieve a sliding connection between the rod 6212 and the transmission component 6213 with a simple structural form.

[0252] In one embodiment, a position detection mechanism is further included, which is mounted on at least one of the base 610 and the trigger 621 to detect the position of rotation of the trigger 621.

[0253] The position detection mechanism facilitates the detection of whether the trigger 621 has rotated into position, such as whether it has moved from the initial position to the working position.

[0254] In one embodiment, the position detection mechanism includes a magnet and a Hall sensor. In the region of the base 610 and the trigger 621 near the rotation axis, one is provided with a magnet and the other with a Hall sensor. In the working position, the magnet is opposite to the Hall sensor to detect that the trigger 621 has rotated to the working position.

[0255] Alternatively, in one embodiment, the position detection mechanism includes a displacement switch and a detection structure. One of the trigger 621 and the base 610 is provided with a displacement switch, and the other is provided with a detection structure. When the trigger 621 rotates to the working position, the detection structure triggers the displacement switch.

[0256] Both of the above-mentioned position detection mechanisms with different structures can detect the position of the trigger 621 in a simple manner, and the detection results are accurate and reliable.

[0257] In one embodiment, the axis of rotation is parallel to the XY plane in which the tool head 700 moves.

[0258] In one embodiment, the transmission end of the trigger 621 is provided with meshing teeth; the drive assembly 630 includes a drive motor and a second transmission mechanism. The drive motor is mounted on the base 610 or the frame 110 and engages with the meshing teeth of the trigger 621 through the second transmission mechanism to drive the trigger 621 to rotate.

[0259] In one embodiment, the second transmission mechanism includes one or more second transmission gears, and the drive shaft of the drive motor is inserted into and connected to the second transmission gears.

[0260] In another embodiment, the second transmission mechanism includes a worm gear mounted on the base 610 and engaging with the meshing teeth; the drive motor drives the worm gear to slide.

[0261] In the above scenario, if the drive motor is a linear motor, then the output end of the linear motor is directly connected to the worm to drive the worm to slide; while when the drive motor is a rotary motor, the output shaft of the rotary motor is connected to a third transmission gear, which is connected to the worm.

[0262] In another embodiment, the transmission end of the trigger is directly connected to the drive shaft of the drive motor.

[0263] By adopting the above-mentioned configuration of the second transmission mechanism, the structure of the drive component can be further simplified, which is conducive to the miniaturization of the entire cutter triggering device.

[0264] In one embodiment, the centerline of the trigger 621 is parallel to the X-axis at the working position, wherein the Y-axis is the axis in which the X-axis system moves, and the X-axis is the axis in which the tool head 700 moves.

[0265] The above configuration facilitates the design and manufacture of the cutter triggering device 600, and also helps to further optimize and improve the overall miniaturization of the 3D printing equipment.

[0266] In some embodiments, the centerline of the trigger 621 is parallel to the Y-axis at the initial position to further reduce the space occupied by the cutter triggering device in the X-axis direction when it is not in operation.

[0267] The present invention also provides a 3D printing device, including a frame 110, a tool head 700, a cutting assembly 710, and a cutting trigger device 600 as described above. The tool head 700 is movably mounted on the frame 110, the cutting assembly 710 is disposed on the tool head 700, and the base 610 is mounted on the frame 110.

[0268] The trigger 621 is disposed adjacent to the frame 110 in the initial position and is located outside the movement space of the tool head 700; in the working position, the trigger 621 is at least partially located within the movement space of the tool head 700, and its trigger end 6211 is disposed opposite to the cutting assembly 710 for triggering the cutting assembly 710 to cut material.

[0269] Since the cutting trigger device 600 provided by the present invention is miniaturized, the 3D printing equipment can also be significantly miniaturized.

[0270]

Example 2

[0271] See appendix for further details. Figure 13 The present invention provides a cutting trigger device 600 for a 3D printing device. The 3D printing device includes a frame 110, an XY motion mechanism, a tool head 700, and a cutting assembly 710. The XY motion mechanism is installed on the frame 110, the tool head 700 is movably disposed within the frame 110 through the XY motion mechanism, and the cutting assembly 710 is disposed on the tool head 700.

[0272] The cutter triggering device 600 includes a triggering assembly 620, which includes a trigger member 621. The trigger member 621 includes a trigger arm 6221 and a triggering structure 6222. The trigger arm 6221 is rotatably mounted on the frame 110 and is disposed adjacent to the frame 110. The rotation axis 623 of the trigger arm 6221 is perpendicular to the extension direction of the trigger arm 6221 and parallel to the XY plane of the XY motion mechanism. The triggering structure 6222 protrudes from the side of the trigger arm 6221 away from the frame 110.

[0273] The trigger structure 6222 has an initial position and a working position. In the initial position, the trigger structure 6222 is located outside the movement space of the tool head 700. In the working position, the trigger structure 6222 is located in the movement space and is used to trigger the cutting assembly 710 to cut the material.

[0274] In this embodiment, the rotation axis of the trigger 610 is parallel to the XY plane of the 3D printing device. Projecting along the rotation axis of the trigger, the line connecting the trigger point of the trigger and the center point of its rotating support segment serves as the center line, which is perpendicular to the rotation axis. In this embodiment, the normal direction of the trigger point during triggering is parallel to the rotation axis of the trigger. Specifically, when the trigger structure 6222 is a cylindrical or rod-shaped structure, its center line is parallel to the rotation axis of the trigger.

[0275] In this embodiment, the trigger 621 rotates within the YZ plane of the 3D printing equipment. In its initial position, the trigger 621 is located outside the movement space of the tool head 700. Therefore, the trigger 621 does not occupy the movement space of the tool head 700. This makes the cutter trigger device 600 effectively save the internal space of the 3D printing equipment and significantly increase the movement space of the tool head 700. It is a significant innovation and improvement compared to the cutter trigger device 600 in existing 3D printing equipment.

[0276] In one embodiment, the XY motion mechanism includes a Y-axis slider 126, which is slidably mounted on the frame 110;

[0277] The trigger assembly 620 also includes a drive rod 6223, which is bent and connected to the trigger arm 6221. The rotation axis is located at the bend between the two. The drive rod 6223 is located adjacent to the frame 110 and is partially located within the sliding stroke of the Y-axis slider 126.

[0278] The function of the drive rod 6223 is to drive the trigger 6222 to rotate from the initial position to the working position. By setting the Y-axis slider 126 and setting part of the drive rod 6223 to be located within the sliding stroke of the Y-axis, the drive rod 6223 can be driven to move through the movement of the Y-axis sliding, thereby realizing the rotation of the trigger 6222 from the initial position to the working position.

[0279] In one embodiment, at the initial position, the trigger structure 6222 is located above the sliding space of the Y-axis slider 126; the Y-axis slider 126 slides through the area below the trigger structure 6222 and then slides to abut against the drive rod 6223, so that the trigger structure 6222 rotates from the initial position to the working position.

[0280] In one embodiment, the trigger 621 further includes a guide block 6224 connected to the trigger arm 6221. In the working position, the guide block 6224 is located within the sliding stroke of the Y-axis slider 126. After the trigger structure 6222 rotates from the initial position to the working position by pushing the drive rod 6223 against the Y-axis slider 126, the trigger 621 rotates back to the initial position by pushing the guide block 6224 against the Y-axis slider 126.

[0281] The guide block 6224 helps the trigger 621 return from its working position to its initial position, and is therefore mounted on the trigger arm 6221 of the trigger 621. Similar to the working mechanism of the trigger structure 6222, the guide block 6224 is also propelled by the Y-axis slider 126. This allows for the simultaneous propulsion of both the trigger structure 6222 and the guide block 6224 using a single mechanism, eliminating the need for separate propulsion mechanisms for each and significantly optimizing the internal structure of the 3D printing equipment.

[0282] In one embodiment, the guide block 6224 is disposed between the trigger arm 6221 and the trigger structure 6222.

[0283] The guide block 6224 and the trigger structure 6222 can be set at different positions on the trigger arm 6221 to avoid mutual interference.

[0284] In one embodiment, the guide block 6224 forms guide ramps 6214a on its two end faces along the extension direction of the trigger arm 6221.

[0285] With the above-mentioned guide slope 6214a, the Y-axis slider 126 can move along the guide slope 6214a, so the contact surface between the Y-axis slider 126 and the guide block 6224 is smooth and will not cause damage to the corresponding components due to hard collision.

[0286] In one embodiment, a drive motor is also included, which is mounted on the frame 110 or the base 610, and its drive shaft is connected to the trigger arm 6221.

[0287] With the above settings, the trigger 621 can be driven by a simple structure, and the working effect is stable and reliable.

[0288] In one embodiment, a base 610 is further included, the base 610 having a plate-like structure, the base 610 being fitted and installed against the inner wall of the frame 110; the trigger component 620 is installed on the frame 110 via the base 610.

[0289] The above settings can further improve the integration and miniaturization of the 3D printing equipment, and the installation of each component is both secure and simple.

[0290] In one embodiment, a reset spring is also included, which is disposed between the trigger arm 6221 and the base 610 or the frame 110, so that after the external force on the trigger assembly 620 disappears, the trigger structure 6222 returns to the initial position.

[0291] To ensure the return spring functions properly, hooks can be provided on the trigger arm 6221 and the base 610, with the two ends of the return spring connected to the two hooks respectively.

[0292] In one embodiment, an elastic positioning structure 618 is further included, which is disposed on the base 610; during the process of the trigger structure 6222 rotating from the initial position to the working position, the trigger arm 6221 passes over the elastic positioning structure 618 and abuts against the trigger arm 6221 in the working position to restrict the trigger arm 6221 from rotating to the initial position.

[0293] The elasticity of the elastic positioning structure 618 allows the trigger arm 6221 to pass over the elastic positioning structure 618 during the process of the trigger structure 6222 rotating from the initial position to the working position; while when the trigger structure 6222 is in the working position, the trigger arm 6221 can still abut against the elastic positioning structure 618, restricting the trigger arm 6221 from rotating to the initial position.

[0294] In one embodiment, the elastic positioning structure 618 includes a protrusion structure 6182 disposed on the base 610; the trigger arm 6221 is provided with a limiting groove 6221a, and in the working position, the protrusion structure 6182 is located in the limiting groove 6221a.

[0295] The elastic positioning structure 618 further includes a limiting structure 6183 disposed on the base 610 or the frame 110; when the trigger arm is in the working position, the limiting structure 6183 is located on the other side of the trigger arm opposite to the elastic positioning structure 618, and is used to limit the extreme rotation position of the trigger arm.

[0296] By making the protrusion 6182 on the base 610 elastic, the trigger arm 6221 can pass over the protrusion 6182 during the process of the trigger 6222 rotating from the initial position to the working position; and when the trigger 6222 is in the working position, the protrusion 6182 can be located in the limiting groove 6221a on the trigger arm 6221, restricting the trigger arm 6221 from rotating to the initial position.

[0297] In one embodiment, the elastic positioning structure 618 further includes an elastic arm 6181, and a protruding structure 6182 and a limiting structure 6183 can be disposed on the elastic arm 6181. Specifically, one end of the elastic arm 6181 can be connected to the base 610, and the other end can be provided with the protruding structure 6182 and the limiting structure 6183. In some embodiments, the limiting structure 6183 and the protruding structure 6182 can be connected by the elastic arm 6181, forming a space between them to accommodate the elastic arm 6181.

[0298] By using the elastic arm 6181, the elastic positioning structure 618 can be easily and securely connected to the base 610, effectively achieving elastic positioning of the trigger arm 6221.

[0299] In one embodiment, the trigger structure 6222 includes a rod 6212, which is slidably connected to the trigger arm 6221 in a direction perpendicular to the rotation plane of the trigger arm 6221; in the working position, one end of the rod 6212 can extend out of the trigger arm 6221 and abut against the frame 110 or the base 610.

[0300] By setting the rod body 6212, the triggering structure 6222 can be triggered. For example, the Y-axis slider 126 can directly touch the rod body 6212 and apply force to the rod body 6212 so that the triggering structure 6222 is triggered and the triggering member 621 rotates from the initial position to the working position.

[0301] In one embodiment, the rod body 6212 is provided with a strip-shaped hole, the extension direction of the strip-shaped hole being consistent with the axial direction of the rod body 6212; the trigger arm 6221 is provided with a slider that cooperates with the strip-shaped hole.

[0302] Alternatively, in one embodiment, the trigger 6222 may further include a sleeve portion 6213b, which is connected to the trigger arm 6221, and the rod body 6212 is slidably inserted into the sleeve portion 6213b.

[0303] With the above two configurations, a sliding connection can be formed between the rod 6212 and the trigger arm 6221. In this way, after the cutting assembly 710 is contacted and triggered by the trigger structure 6222, the force applied by the cutting assembly 710 to the trigger structure 6222 can be transmitted to the base 610 through the sliding connection via the rod 6212. This means that the trigger structure 6222 itself does not have to bear a large force. Therefore, the trigger structure 6222 can be made of materials such as plastic, and only the base 610 needs to be made of high-strength metal.

[0304] In one embodiment, the trigger structure 6222 is a cylindrical or conical structure with a chamfer at the end.

[0305] This enhances the strength of the trigger structure 6222 and avoids stress concentration caused by using a non-beveled structure.

[0306]

Example 3

[0307] See appendix Figure 1-4 10-12 and 19, this embodiment provides a cutter triggering device 600 for a 3D printing device, the 3D printing device including a tool head 700 and a cutting assembly 710, the cutting assembly 710 being disposed on the tool head 700; the cutter triggering device 600 includes a base 610, a triggering assembly 620 and a driving assembly 630;

[0308] The base 610 is provided with a limiting groove 614, and a limiting ball 640 is installed in the limiting groove 614.

[0309] The triggering assembly 620 includes a trigger member 621, which has a standby groove 6218a and a working groove 6218b. The trigger member 621 is rotatably connected to the base 610. The trigger member 621 has an initial position and a working position. In the initial position, the trigger member 621 is located outside the movement space of the tool head 700, and the limiting ball 640 is limited and engaged with the standby groove 6218a. In the working position, the trigger member 621 is at least partially located in the movement space, and the limiting ball 640 is limited and engaged with the working groove 6218b, so as to trigger the cutting assembly 710 to cut material through the trigger member 621.

[0310] The drive assembly 630 is mounted on the base 610 and is used to drive the trigger 621 to rotate.

[0311] For 3D printing equipment, a cutting assembly 710 (including a cutter) is typically located on the tool head 700 to cut the 3D printing material. In this embodiment, the cutter is triggered by a cutter triggering device 600 with a specific structural form, specifically by a trigger member 621 in the triggering assembly 620 of the cutter triggering device 600. When the trigger member 621 is in the initial position, the cutter is not triggered and does not work; when the trigger member 621 is in the working position, it contacts the cutter and triggers it, and the cutter begins to work.

[0312] Since the trigger 621 in the cutter triggering device 600 of this embodiment is located outside the movement space of the tool head 700 and parallel to the Y-axis direction when it is in the initial position, the trigger 621 does not occupy the movement space of the tool head 700. This makes the cutter triggering device 600 effectively save the internal space of the 3D printing equipment and significantly increase the movement space of the tool head 700.

[0313] By providing a standby groove 6218a and a working groove 6218b on the trigger element 621, and with the limiting ball 640 in the limiting groove 614 on the base 610 positioned in the standby groove 6218a and the working groove 6218b respectively, the trigger element 621 is securely positioned in each location. When triggered, the triggering force is concentrated, preventing the trigger element 621 from easily shaking. This fully ensures the reliability of the cutter triggering device 600 and improves the stability and reliability of the 3D printing equipment. Adjacent grooves are connected by a connecting groove 6218d.

[0314] Furthermore, along the direction of the rotation axis of the rotating part, the depth of the connecting groove 6218d is less than the depth of the standby groove and the working groove, so that the rotation of the trigger 610 can be smoother, and a certain positioning can be achieved in the initial position and the working position. Of course, in embodiments including the over-rotation groove, any two adjacent grooves among the multiple standby grooves, over-rotation grooves and working grooves are connected by the connecting groove, and the depth of the connecting groove is also less than the depth of the over-rotation groove.

[0315] In one embodiment, the trigger 621 includes a transmission member 6213 and a rod 6212 connected to each other. The transmission member 6213 includes a rotating part 6213a and a connecting plate 6213c. The rotating part 6213a is rotatably mounted on the base 610. The connecting plate 6213c is connected to the rotating part 6213a and is located on the side of the rotating part 6213a closer to the base 610. The standby groove 6218a and the working groove 6218b are both disposed on the connecting plate 6213c. Within the rotation stroke of the trigger 621, the limiting ball 640 is pressed against the connecting plate 6213c.

[0316] The trigger 621 is rotatably connected to the base 610 via the connector.

[0317] The trigger 621 triggers the cutting assembly 710 via the rod 6212, while the connecting plate 6213c in its transmission component 6213 serves as the carrier for setting the standby groove 6218a and the working groove 6218b. During the rotation stroke of the trigger 621, the limiting ball 640 presses against the connecting plate 6213c. When it is located in the standby groove 6218a, the trigger 621 is not driven by the transmission and is in the initial position; when the limiting ball 640 is located in the working groove 6218b, the trigger 621 has been driven to the working position.

[0318] In one embodiment, in the direction of the rotation axis 623 of the rotating part 6213a, the rod 6212 is offset from the rotating part 6213a, and the rod 6212 is slidably disposed relative to the transmission member 6213 along the center line; in the working position, the rod 6212 slides away from the tool head 700 under the action of the cutting assembly 710, and can abut against the base 610 or the frame 110 of the 3D printing equipment.

[0319] By misaligning the rod 6212 with the rotating part 6213a, the internal space of the cutting trigger device 600 can be fully utilized, reducing the space occupied by the device itself and contributing to the miniaturization of the 3D printing equipment. When the trigger 621 is in the working position, the rod 6212 can slide to abut against the base 610 or the frame 110 of the 3D printing equipment, transmitting the force from the cutting assembly 710 to the base 610 or the frame 110 of the 3D printing equipment. The rod 6212 does not need to bear a large force and can be made of materials such as plastic, eliminating the need for high-strength and high-cost metal materials.

[0320] In one embodiment, the transmission member 6213 further includes a sleeve portion 6213b, a rotating portion 6213a connected to one end of the sleeve portion 6213b, and a rod 6212 slidably inserted into the sleeve portion 6213b.

[0321] Alternatively, in one embodiment, a slider shaft is also included, and the rotating part 6213a is rotatably mounted on the base 610 via the slider shaft;

[0322] The rod 6212 is provided with a strip-shaped hole, the extension direction of which is consistent with the center line of the rod 6212, and it slides with the slider shaft.

[0323] The above are two ways to achieve the sliding fit between the rod 6212 and the transmission component 6213. For the design where the rod 6212 has a slotted hole, the base 610 can have a locking hole. The sliding shaft includes a locking section, a rotating shaft section, a sliding section, and a limiting section arranged sequentially. The sliding shaft passes through the slotted hole and the center hole of the rotating part 6213a sequentially. The locking section is threadedly locked to the locking hole. The rotating section serves as the rotating shaft 623 of the rotating part 6213a. The sliding section slides with the slotted hole. The limiting section is located on the side of the slotted hole away from the rotating part 6213a, projected along the axis of the rotating shaft section. At least part of the limiting section is located outside the slotted hole.

[0324] In one embodiment, the drive assembly 630 includes a trigger rack 631, a drive gear 632, and a first transmission mechanism. The trigger rack 631 is slidably mounted on the base 610, and the drive gear 632 is rotatably mounted on the base 610 and meshes with the trigger rack 631.

[0325] The outer periphery of the rotating part 6213a is provided with meshing teeth, which are driven to engage with the drive gear 632 through the first transmission mechanism.

[0326] As the name suggests, the trigger rack 631 is triggered to drive the material cutting component 710. The movement of the trigger rack 631 after being triggered is transmitted through the drive gear 632 meshing with it. The drive gear 632 drives the first transmission mechanism to drive the meshing teeth to rotate. The rotation of the meshing teeth causes the trigger element 621 to rotate from the initial position to the working position.

[0327] In one embodiment, the first transmission mechanism includes an odd number of first transmission gears that mesh with each other in sequence. Among the odd number of meshing first transmission gears, the two most distant first transmission gears mesh with the meshing teeth on the drive gear 632 and the trigger 621, respectively.

[0328] By transmitting power between the meshing teeth of the drive gear 632 and the trigger 621 through an odd number of meshing first transmission gears, the meshing teeth can eventually rotate in the desired direction of rotation, thus smoothly enabling the trigger 621 to rotate from the initial position to the working position.

[0329] In one embodiment, the first transmission mechanism includes a drive rack 633, which is slidably mounted on the base 610 in a direction parallel to the trigger rack 631, and is connected to the trigger rack 631 via the drive gear 632.

[0330] The meshing teeth on the rotating part 6213a mesh with the driving rack 633.

[0331] In this implementation, the transmission is achieved sequentially through the trigger rack 631, the drive gear 632, the drive rack 633, and the meshing teeth, and finally the trigger 621 is driven to rotate from the initial position to the working position.

[0332] In one embodiment, the center of the working groove 6218b forms a central surface with the rotation axis 623 of the rotating part 6213a; the connecting plate 6213c is disposed along the outer periphery of the rotating part 6213a, and two standby grooves 6218a are disposed thereon, and the two standby grooves 6218a are symmetrically disposed about the central surface.

[0333] The two symmetrically arranged standby grooves 6218a make the installation of the cutter trigger device 600 more flexible, expand the application range of the cutter trigger device 600, and save manufacturing costs. For example, the cutter trigger device 600 can be set on any side near the Y-axis slide rail 125. Especially when some printheads are dual printheads, the cutter trigger device 600 can be installed on the side of both Y-axis slide rails 125 at the same time.

[0334] In one embodiment, the connecting plate 6213c is further provided with a communicating groove 6218d; each standby groove 6218a is connected to the working groove 6218b through the communicating groove 6218d.

[0335] Specifically, the connecting groove 6218d can be an arc-shaped groove, which is arranged circumferentially along the rotating part 6213a.

[0336] In one embodiment, the cutter triggering device 600 further includes a reset torsion spring 650, which is movably mounted on the base 610, with one side fixed relative to the base 610 and the other side being a free end.

[0337] Along the first rotational direction from the initial position to the working position, the free end is located outside the working position so that it can abut against the reset torsion spring 650 when the trigger 621 rotates to the working position.

[0338] If the trigger 621 is over-triggered (e.g., due to excessive external triggering force), the trigger 621 may rotate beyond its working position. Once it reaches a certain point, it will block the return torsion spring 650. After the external triggering force disappears, the trigger 621 can return to its working position under the action of the return torsion spring 650.

[0339] In this invention, the direction in which the trigger 621 rotates from the initial position to the working position is denoted as the first rotation direction, i.e., the positive direction below; the direction in which it rotates from the working position to the initial position is denoted as the second rotation direction, i.e., the reverse direction below. The area swept by the trigger 621 as it rotates from the initial position to the working position is called the first region, and the area swept by the trigger 621 as it continues to rotate along the first direction from the working position is called the second region. In the free state of the return torsion spring 650, the free end is located outside the working position, i.e., in the second region.

[0340] In one embodiment, the trigger member 621 is provided with an abutment groove 6213d or an abutment protrusion; the free end of the reset torsion spring 650 is located within the stroke of the abutment groove 6213d or the abutment protrusion, so that when the trigger member 621 rotates to the outside of the working position along the first rotation direction, it abuts against the reset torsion spring 650 through the abutment groove 6213d or the abutment protrusion.

[0341] With the aforementioned abutment groove 6213d or abutment protrusion, the trigger 621 and the reset torsion spring 650 can form a reliable abutment. After the external triggering force disappears, the trigger 621 can smoothly return to the working position under the action of the reset torsion spring 650.

[0342] In one embodiment, the center and rotation axis of the limiting ball 640 are coplanar with the center line of the trigger 621 in the working position.

[0343] Therefore, when the cutting assembly 710 is triggered, the force on the trigger 621 from the cutting assembly 710, the force on the limiting ball 640, and the force on the rotating shaft 623 are coaxial, which enhances the force stability of the entire cutting trigger device 600.

[0344] In one embodiment, a compression spring is installed between the groove of the limiting ball 640 and the limiting ball 640.

[0345] By setting a compression spring, the limiting ball 640 can always be in contact with the connecting plate 6213c and the base 610 during the entire operation of the cutter triggering device 600, thereby making the relative sliding between the limiting ball 640 and the connecting plate 6213c more stable.

[0346]

Example 4

[0347] See appendix Figure 4-6 According to embodiments 8 and 16, this embodiment provides a cutter triggering device 600 for a 3D printing device, the 3D printing device including a tool head 700 and a cutting assembly 710, the cutting assembly 710 being disposed on the tool head 700; the cutter triggering device 600 includes a base 610, a triggering assembly 620, a driving assembly 630, and a reset torsion spring 650;

[0348] The base 610 is provided with a limiting groove 614, and a limiting ball 640 is installed in the limiting groove 614.

[0349] The triggering assembly 620 includes a trigger member 621, which is provided with a standby groove 6218a, a working groove 6218b, and a rotation groove 6218c. The trigger member 621 is rotatably mounted on the base 610. Within its rotational stroke, the trigger member 621 is sequentially provided with an initial position, a working position, and a rotation position along a first rotational direction. In the initial position, the trigger member 621 is located outside the movement space of the tool head 700, and the limiting ball 640 is positioned relative to the standby groove 621. 8a Limiting engagement; in the working position, the trigger 621 is at least partially located in the movement space, and the limiting ball 640 engages with the working limiting position to trigger the cutting assembly 710 to cut material via the trigger 621; in the over-rotation position, the limiting ball 640 engages with the over-rotation groove 6218c to position the trigger 621 at an over-rotation position beyond the working position; wherein, the first rotation direction refers to the direction from the initial position to the working position with a minimum rotation angle;

[0350] The reset torsion spring 650 is movably mounted on the base 610, with its first side abutting against the base 610 or the drive assembly 630, and its second side located in the section of the rotational stroke of the trigger 621 along the first direction that exceeds the over-rotation position, so that when the trigger 621 rotates along the first direction to exceed the over-rotation position, it will return to the over-rotation position under the reset force of the reset torsion spring 650.

[0351] The drive assembly 630 is mounted on the base 610 and is used to drive the trigger 621 to rotate.

[0352] Since the trigger 621 in the cutter triggering device 600 of this embodiment is located outside the movement space of the tool head 700 and parallel to the Y-axis direction when it is in the initial position, the trigger 621 does not occupy the movement space of the tool head 700. This makes the cutter triggering device 600 effectively save the internal space of the 3D printing equipment and significantly increase the movement space of the tool head 700.

[0353] By providing a standby groove 6218a and a working groove 6218b on the trigger member 621, and with the limiting ball 640 in the limiting groove 614 on the base 610 positioned in the standby groove 6218a and the working groove 6218b respectively, the initial and working positions of the trigger member 621 are determined. This ensures that the trigger member 621 is securely positioned in each position, and the triggering force is concentrated when triggered, making it less prone to shaking. This fully guarantees the reliability of the cutter triggering device 600 and improves the stability and reliability of the 3D printing equipment.

[0354] Furthermore, in this embodiment, the trigger member 621 is also provided with an over-rotation groove 6218c. At the over-rotation position of the trigger member 621, the limiting ball 640 can cooperate with the over-rotation groove 6218c to position the trigger member 621 at the over-rotation position (which can be returned to the working position by external force later). The purpose of the reset torsion spring 650 is to provide a reset force to make the trigger member 621 move in the opposite direction after the rotation stroke of the trigger member 621 exceeds the over-rotation position, such as returning to the over-rotation position or the working position, thereby helping the cutter triggering device 600 return to the normal working state.

[0355] The 3D printing equipment further includes a Y-axis slider that slides along the Y-axis direction. The Y-axis slider can rotate the trigger element by pushing against the drive assembly. In embodiments where the drive assembly includes a trigger block or a trigger rack, the trigger element rotates when the Y-axis slider pushes against the trigger block or trigger rack. In embodiments where the trigger element has a first trigger protrusion and a second trigger protrusion, the Y-axis slider can also rotate the trigger element by pushing against the first or second trigger protrusion. In one embodiment, the Y-axis slider first pushes the drive assembly to bring the trigger element to the working position, and then the Y-axis slider retracts in the opposite direction to the Y-axis position that rotated the trigger element to the working position. Thus, through this movement of the Y-axis slider, regardless of whether the trigger element is initially in its initial position, it can be ensured that it eventually rotates to the correct working position.

[0356] In the process of the Y-axis slider sliding towards the cutter triggering device 600, if the trigger 610 is in the initial position, the Y-axis slider first passes the position of the cutter triggering device 600, then hits the trigger block, and then pushes the trigger block to move, causing the trigger 610 to rotate. However, this situation may cause the trigger 610 to rotate beyond the working position. In this invention, the Y-axis slider can be controlled to move in the opposite direction. By pushing the first trigger protrusion or the second trigger protrusion, the trigger 610 can be rotated back to the working position. If the trigger 610 is in a non-initial position from the beginning, such as in the working position or the working position, the Y-axis slider will first push the first trigger protrusion or the second trigger protrusion to make it rotate to a state separated from the Y-axis slider. At this time, the trigger rotates in the opposite direction under the action of the reset torsion spring. If it rotates to the over-rotation position, the Y-axis slider will hit the trigger block, and then slide in the opposite direction through the Y-axis slider, and then push the first trigger protrusion or the second trigger protrusion to make the trigger 610 rotate back to the working position. That is, after each impact of the Y-axis slider with the trigger block, it slides in the opposite direction, thereby pushing the first trigger protrusion or the second trigger protrusion to rotate the trigger 610 to the working position. It can be seen that by adopting this setting and movement method, it can adapt to both the correct and incorrect initial states of the trigger, making motion control simpler.

[0357] In one embodiment, the drive assembly 630 includes a drive rack 633, a trigger rack 631, and a drive gear 632. The drive rack 633 and the trigger rack 631 are arranged in parallel, and each of their opposite sides is provided with drive teeth. The drive rack 633 is slidably mounted on the base 610, and the trigger rack 631 is slidably mounted on the base 610. The drive gear 632 is meshed with the drive teeth on both the drive rack 633 and the trigger rack 631.

[0358] One end of the trigger 621 is engaged with the drive tooth so that the trigger 621 can be moved by the sliding of the trigger rack 631;

[0359] The reset torsion spring 650 is located on one side of the trigger rack 631 along its length, and the first side is fixed relative to the base 610 by abutting against the drive rack 633.

[0360] With the aforementioned configuration of the drive rack 633, trigger rack 631, and drive gear 632, the trigger rack 631, by sliding relative to the base 610, can drive the trigger member 621 to move from the initial position to the working position to trigger the cutting assembly 710. The reset torsion spring 650, with its first side fixed to the base 610 by abutting against the drive rack 633, can be reliably installed, ensuring its operational reliability. After the trigger member 621's rotational stroke exceeds the over-rotation position, a reliably resetting force is provided to return the trigger member 621 to the over-rotation position.

[0361] In one embodiment, the base 610 has a U-shaped structure, including a base plate 611, a first side plate 612, and a second side plate 613. The first side plate 612 and the second side plate 613 are arranged opposite to each other and connected to the same side of the base plate 611.

[0362] Therefore, the aforementioned drive rack 633, trigger rack 631, drive gear 632, and return torsion spring 650 can all be installed inside the U-shaped structure, providing protection for these components. Furthermore, after the triggering device is installed on the frame, the base plate 611 of the U-shaped structure is located above, which can prevent impurities, debris, etc., from falling into the interior of the U-shaped structure.

[0363] In one embodiment, the drive rack 633 and the trigger rack 631 are disposed inside the U-shaped structure and are respectively disposed close to the first side plate 612 and the second side plate 613; the reset torsion spring 650 is movably mounted on the base plate 611, with its first side abutting against the inner side of the first side plate 612; and the limiting ball 640 is disposed on the base plate 611.

[0364] Therefore, the drive rack 633, trigger rack 631, and return torsion spring 650 can be arranged in a reasonable manner so that they can work together without interfering with each other.

[0365] In one embodiment, the trigger 621, the limiting ball 640, and the reset torsion spring 650 are all located on the same side of the drive gear 632; the second side plate 613 has a notched corner on the side near the limiting ball 640 to prevent interference when the trigger 621 rotates.

[0366] This reduces the width of the U-shaped structure, i.e., reduces the distance between the first side plate 612 and the second side plate 613, because without this notch, the U-shaped structure would require a larger internal width for the trigger 621 to rotate.

[0367] In one embodiment, the base 610 further includes a bending plate 617, which is connected to the side of the base plate 611 away from the drive gear 632 and to the end of the first side plate 612; a limiting groove 614 is provided on the inner side of the bending plate 617.

[0368] The overall strength of the base 610 can be increased by the aforementioned bending plate 617. Furthermore, multiple reinforcing ribs can be provided on the base plate 611, the first side plate 612, and the second side plate 613 to further increase the strength of the base 610; recessed structures can also be provided on the base plate 611 and the first side plate 612 to reduce the overall weight of the base 610.

[0369] In one embodiment, the base 610 is provided with a limiting groove 614 and a limiting hole 6112, which extend along the length direction of the drive rack 633; ​​the cutter triggering device 600 also includes a limiting shaft, which is movably mounted in the limiting groove 614 and the limiting hole 6112, and a reset torsion spring 650 is sleeved on the limiting shaft.

[0370] In the above manner, the reset torsion spring 650 is movably installed. In the free state, the limiting shaft is located at one end close to the trigger rack 631. After abutting against the trigger 621, it gradually moves away from the trigger rack 631. In this way, the force applied when squeezed is too large, and the impact during return to position is prevented after the external force disappears.

[0371] In addition, the cross section of the limiting shaft can be designed as a cross-shaped structure.

[0372] In one embodiment, the 3D printing equipment includes a frame 110 and a Y-axis slider 126, the Y-axis slider 126 being slidably mounted on the frame 110; the trigger member 621 includes a rod 6212 and a transmission member 6213, the transmission member 6213 including a sleeve portion 6213b, the rod 6212 being inserted into the sleeve portion 6213b; one end of the sleeve portion 6213b is rotatably mounted on the base 610 and meshes with the drive teeth of the drive rack 633; ​​the sleeve portion 6213b has a first trigger protrusion 6214 and a second trigger protrusion 6215 respectively on both radial sides.

[0373] In the initial position, both the first trigger protrusion 6214 and the second trigger protrusion 6215 are outside the travel of the Y-axis slider 126; in the working position, at least the first trigger protrusion 6214 is within the travel of the Y-axis slider 126; in the over-rotation position, at least the second trigger protrusion 6215 is within the travel of the Y-axis slider 126.

[0374] With the above settings, in the working position, the Y-axis slider 126 can move to contact the first trigger protrusion 6214, thereby pushing the trigger 621 from the working position back to the initial position; while in the over-rotation position, the Y-axis slider 126 can move to contact the second trigger protrusion 6215, thereby pushing the trigger 621 from the over-rotation position back to the working position.

[0375] In one embodiment, the transmission member 6213 further includes a rotating part 6213a connected to one end of the sleeve part 6213b. The rotating part 6213a is rotatably mounted on the base 610 to drive the sleeve and the rod 6212 to rotate. The outer periphery of the rotating part 6213a meshes with the drive teeth.

[0376] There is a clearance space between the drive gear 632 and the rotating part 6213a for the rod 6212 to rotate. When the rod 6212 is located in the clearance space, the reset torsion spring 650 abuts against the trigger member 621, and the Y-axis slider 126 can make the rod 6212 located in the clearance space by pushing against the second trigger protrusion 6215. In at least one position, the Y-axis slider 126 can pass over the second trigger protrusion 6215.

[0377] At this time, after the Y-axis slider 126 pushes against the second trigger protrusion 6215, the Y-axis slider 126 continues to move forward, and the trigger 621 changes position as it is pushed by the Y-axis. The second trigger protrusion 6215 is no longer within the movement stroke of the Y-axis slider 126, and the Y-axis slider 126 can pass over the second trigger protrusion 6215.

[0378] In one embodiment, the transmission member 6213 further includes a stop portion disposed on the radially outer side of the sleeve portion 6213b. The stop portion is provided with a stop groove 6213d or a stop protrusion so that when the trigger member 621 rotates beyond the over-rotation position, the second side of the reset torsion spring 650 abuts against the stop groove 6213d or the stop protrusion.

[0379] Therefore, the return torsion spring 650 can reliably abut against the transmission component 6213.

[0380] In one embodiment, the center of the working groove 6218b forms a central surface with the rotation axis 623 of the trigger member 621; the trigger member 621 is provided with two standby grooves 6218a and two over-rotation grooves 6218c that are symmetrical about the central surface.

[0381] The two symmetrically arranged standby grooves 6218a make the installation of the cutter trigger device 600 more flexible, expand the application range of the cutter trigger device 600, and save manufacturing costs. For example, the cutter trigger device 600 can be set on any side near the Y-axis slide rail 125. Especially when some printheads are dual printheads, the cutter trigger device 600 can be installed on the sides of both Y-axis slide rails 125 at the same time.

[0382]

Example 5

[0383] See appendix Figure 1-12 In this embodiment, a printing device is provided, including a frame 110, an XY motion mechanism, a tool head 700, and a controller. The frame 110 includes a rear portion 111 and side portions 113 connected to both ends of the rear portion 111. The side portions 113 have a Y-axis mounting structure. The XY motion mechanism, as described above, includes a Y-axis slide rail 125 and a Y-axis slider 126. The Y-axis slide rail 125 is mounted on the Y-axis mounting structure, and the Y-axis slider 126 is slidably mounted on the Y-axis slide rail 125. The tool head 700 is mounted on the XY motion mechanism.

[0384] The side portion 113 has a Y-axis zero-position surface 1131 in the region near the rear portion 111;

[0385] The 3D printing equipment further includes a cutter triggering device 600, which includes a base 610, a triggering component 620, and a driving component 630. The base 610 is installed on the side portion 113 near the rear portion 111. The triggering component 620 includes a trigger member 621, which is rotatably connected to the base 610 about a rotation axis 623 perpendicular to the XY plane of the XY motion mechanism. The driving component 630 includes a trigger driving member and a first transmission mechanism. The trigger driving member is slidably disposed on the base 610 along a direction parallel to the Y-axis slide rail 125, and drives the trigger member 621 to rotate through the first transmission mechanism.

[0386] The Y-axis zero-position surface 1131 and the trigger drive are both located within the sliding stroke of the Y-axis slider 126, and the Y-axis zero-position surface 1131 is closer to the rear part 111 than the trigger drive, so that the trigger drive is triggered first to drive the trigger 621 to rotate during the sliding of the Y-axis slider 126 toward the rear part 111, and then touches the Y-axis zero-position surface 1131;

[0387] When the tool head 700 is performing zero-position verification, the Y-axis slider 126 is controlled to slide towards the rear side 111. When a second collision is detected, it is determined that the Y-axis slider 126 has touched the Y-axis zero-position surface 1131. The position of the tool head 700 at this time is taken as its zero position in the Y-axis direction.

[0388] The cutting trigger device 600, which is the first of its kind in this application, introduced above, has the technical effect of significantly saving the internal space of the 3D printing equipment and significantly increasing the working space of the tool head 700. The 3D printing equipment provided in this embodiment adopts the cutting trigger device 600 and provides a method for positioning the zero position in the Y-axis direction when using the cutting trigger device 600. Thus, the cutting trigger device 600 introduced above can be applied to the 3D printing equipment without technical obstacles. Moreover, the positioning method is simple and the positioning result is accurate, which greatly improves the working efficiency of the 3D printing equipment.

[0389] In one embodiment, a reset torsion spring 650 is provided between the trigger 621 and the base 610 so that the trigger 621 can rotate in the opposite direction under the action of the reset torsion spring 650 when the external force disappears.

[0390] In one embodiment, when zero-position verification is performed at the tool head 700...

[0391] If the trigger 621 is in the initial position

[0392] Control the Y-axis slider 126 to slide to the rear side 111 until it passes the trigger 621 and pushes the trigger drive to slide to the Y-axis sliding and collide with the Y-axis zero surface 1131. This is the first collision of the Y-axis slider 126.

[0393] Then, the Y-axis slider 126 is controlled to slide a first preset distance away from the rear side 111 until it is separated from the trigger drive. At the same time, the trigger 621 rotates in the opposite direction to the over-rotation position under the action of the reset torsion spring 650.

[0394] Then, control the Y-axis slider 126 to slide to the rear side 111 until the Y-axis slider 126 slides to the Y-axis zero surface 1131 and touches it again, which is the second collision of the Y-axis slider 126.

[0395] The over-rotation position is located where the trigger 621 exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger 621 abuts against the reset torsion spring 650; the first direction is the direction in which the trigger 621 rotates from the initial position to the working position.

[0396] In one embodiment, the trigger member 621 has a second trigger protrusion 6215 protruding radially. In the initial position, the second trigger protrusion 6215 is located on the side of the trigger member 621 near the same side edge 113. When the tool head 700 performs zero-position verification, if the trigger member 621 is in a position other than the initial position,

[0397] Control the Y-axis slider 126 to slide to the rear side 111 until it pushes against the second trigger protrusion 6215, causing the trigger 621 to rotate until the Y-axis slider 126 passes the second trigger protrusion 6215 and separates from the second trigger protrusion 6215;

[0398] The Y-axis slider 126 is controlled to continue sliding to the rear side 111 until it collides with the Y-axis zero surface 1131, which is the first collision. After that, the Y-axis slider 126 is controlled to move in the opposite direction for a second preset distance. At the same time, the trigger drive is rotated in the opposite direction to the over-rotation position under the action of the reset torsion spring 650 (at this time, the Y-axis slider 126 is located between the trigger drive and the trigger 621).

[0399] Then control the Y-axis slider 126 to slide to the rear side 111 until it collides with the Y-axis zero surface 1131, which is the second collision;

[0400] The over-rotation position is located where the trigger 621 exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger 621 abuts against the reset torsion spring 650; the first direction is the direction in which the trigger 621 rotates from the initial position to the working position.

[0401] The above settings can improve the positioning accuracy of the Y-axis zero position. This is because when the Y-axis slider 126 experiences its first collision, it may not necessarily be that the Y-axis slider 126 collided with the Y-axis zero position surface 1131; it could also be that the Y-axis slider 126 accidentally touched another component. However, as long as the Y-axis slider 126 experiences a second collision, it will definitely collide with the Y-axis zero position surface 1131. Therefore, the position of the tool head 700 at the time of the second collision is taken as its zero position in the Y-axis direction.

[0402] In one embodiment, a limiting groove 614 is provided on the base 610, and a limiting ball 640 is installed in the limiting groove 614; a standby groove 6218a, a working groove 6218b, and a rotation groove 6218c are provided on the trigger member 621; the initial position, the working position, and the rotation position are sequentially arranged in the first rotation direction of the trigger member 621; in the initial position, the limiting ball 640 is limited and engaged with the standby groove 6218a; in the working position, the limiting ball 640 is limited and engaged with the working groove 6218b; in the rotation position, the limiting ball 640 is limited and engaged with the rotation groove 6218c.

[0403] Therefore, no matter what position the trigger 621 is in, it can be reliably positioned by the limiting ball 640 and the corresponding groove. Without the application of obvious external force, the position of the trigger 621 will not change, thus improving the reliability and stability of the cutter triggering device 600.

[0404] In one embodiment, a drive motor is also included, which is mounted on the rear side 111 and is used to drive the Y-axis slider 126 to slide.

[0405] The collision of the Y-axis slider 126 is determined by detecting the change in the current of the drive motor. The second collision of the Y-axis slider 126 occurs when the drive motor experiences the second change in current.

[0406] By detecting whether the current of the drive motor changes abruptly, it can be confirmed whether the Y-axis slider 126 has collided. The second collision occurs when the drive motor experiences a second sudden current change.

[0407] In one embodiment, an encoder connected to the drive motor is also included, which records the current angle of the encoder as zero when a second change in the drive motor is detected.

[0408] At this point, the adjustment of the tool head 700's movement displacement can be based on the zero position obtained from the encoder.

[0409] In one embodiment, the 3D printing apparatus further includes a nozzle assembly 400 and a printing panel, such as Figure 15 , 16 A nozzle assembly 400 is provided on the inner side of the rear part 111, and the rotation axis of the trigger is perpendicular to the XY plane of the 3D printing equipment. Projecting along the rotation axis of the trigger, the line connecting the trigger point of the trigger and the center point of its rotation support section is taken as the center line, and the center line of the trigger is perpendicular to the Y-axis in the working position. Projecting in the X-axis direction, the cutter trigger device 600 is located between the printing panel and the drive motor, and has an overlapping area with the nozzle assembly 400.

[0410] The wiping nozzle assembly 400 is used to wipe away any remaining printing material at the outlet after cutting. The overlapping area between the cutter trigger device 600 and the wiping nozzle assembly 400 when projected along the X-axis saves space along the Y-axis.

[0411] In one embodiment, such as Figure 17As shown, when projected along the X-axis, the centerline of the trigger is located inside the rear side of the printing platform, and the distance D1 between the centerline of the trigger and the side of the printing panel near the rear side is within 0-25mm. Alternatively, when projected along the X-axis, the centerline of the trigger is located inside the nozzle assembly, and the distance D2 between the centerline of the trigger and the shape center of the nozzle assembly is within 1-30mm. This distance setting further improves the space utilization rate of the frame 110 in the Y-axis direction.

[0412] This embodiment also provides a zero-position calibration method for a 3D printing device, including a frame 110, an XY motion mechanism, a tool head 700, and a controller. The frame 110 includes a rear portion 111 and side portions 113 connected to both ends of the rear portion 111. The side portions 113 have a Y-axis mounting structure. The XY motion mechanism includes a Y-axis slide rail 125 and a Y-axis slider 126. The Y-axis slide rail 125 is mounted on the Y-axis mounting structure, and the Y-axis slider 126 is slidably mounted on the Y-axis slide rail 125. The tool head 700 is mounted on the XY motion mechanism.

[0413] The side portion 113 has a Y-axis zero position in the region near the rear portion 111;

[0414] The 3D printing equipment further includes a cutter triggering device 600, which includes a base 610, a triggering component 620, and a driving component 630. The base 610 is installed on the side portion 113 near the rear portion 111. The triggering component 620 includes a trigger member 621, which is rotatably connected to the base 610 about a rotation axis 623 perpendicular to the XY plane of the XY motion mechanism. The driving component 630 includes a trigger driving member and a first transmission mechanism. The trigger driving member is slidably disposed on the base 610 along a direction parallel to the Y-axis slide rail 125, and drives the trigger member 621 to rotate through the first transmission mechanism.

[0415] The Y-axis zero-position surface 1131 and the trigger drive are both located within the sliding stroke of the Y-axis slider 126, and the Y-axis zero-position surface 1131 is closer to the rear side 111 than the trigger drive, so that the trigger drive is triggered first to drive the trigger 621 to rotate during the sliding of the Y-axis slider 126 toward the rear side 111, and then touches the Y-axis zero position.

[0416] The zero-position verification method includes:

[0417] When the tool head 700 receives a command to perform zero-position verification, the Y-axis slider 126 is controlled to slide towards the rear part 111;

[0418] When a second collision is detected with the Y-axis slider 126, it is determined that the Y-axis slider 126 has touched the Y-axis zero-position surface 1131, and the position of the tool head 700 at this time is taken as its zero position in the Y-axis direction.

[0419] The zero-position verification method for 3D printing equipment provided in this embodiment enables the cutting trigger device 600 described above to be applied to 3D printing equipment without technical obstacles. Moreover, the positioning method is simple and the positioning result is accurate, which greatly improves the working efficiency of 3D printing equipment.

[0420] In one embodiment, a reset torsion spring 650 is provided between the trigger 621 and the base 610, so that the trigger 621 can rotate in the opposite direction under the action of the reset torsion spring 650 when the external force disappears; the zero-position verification method includes:

[0421] When the tool head 700 receives an instruction to perform a zero-position check, if the trigger 621 is in the initial position, then

[0422] Control the Y-axis slider 126 to slide towards the rear part 111 until it passes the trigger 621 and pushes against the trigger drive until the Y-axis slider 126 collides with the Y-axis zero surface 1131, which is the first collision of the Y-axis slider 126.

[0423] Then, the Y-axis slider 126 is controlled to slide a first preset distance away from the rear part 111 until it is separated from the trigger drive member. At the same time, the trigger member 621 rotates in the opposite direction to the over-rotation position under the action of the reset torsion spring 650.

[0424] Then, control the Y-axis slider 126 to slide towards the rear part 111 until the Y-axis slider 126 slides to touch the Y-axis zero position again, which is the second collision of the Y-axis slider 126.

[0425] The over-rotation position is located where the trigger 621 exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger 621 abuts against the reset torsion spring 650; the first direction is the direction in which the trigger 621 rotates from the initial position to the working position.

[0426] In one embodiment, the trigger 621 has a second trigger protrusion 6215 protruding radially. In the initial position, the second trigger protrusion 6215 is located on the side of the trigger 621 near the side portion 113 on the same side. The zero-position verification method includes:

[0427] When the tool head 700 receives a command to perform a zero-position check, if the trigger 621 is in a position other than its initial position, then

[0428] Control the Y-axis slider 126 to slide towards the rear part 111 until it pushes against the second trigger protrusion 6215, causing the trigger 621 to rotate until the Y-axis slider 126 passes the second trigger protrusion 6215 and separates from the second trigger protrusion 6215;

[0429] The Y-axis slider 126 is controlled to continue sliding towards the rear portion 111 until it collides with the Y-axis zero surface 1131, which is the first collision. After that, the Y-axis slider 126 is controlled to move in the opposite direction a second preset distance; at the same time, the trigger drive member rotates in the opposite direction to the over-rotation position under the action of the reset torsion spring 650; (in the specification, at this time the Y-axis slider 126 is located between the trigger drive member and the trigger member 621)

[0430] Then, control the Y-axis slider 126 to slide towards the rear part 111 until it collides with the Y-axis zero surface 1131, which is the second collision.

[0431] The over-rotation position is located where the trigger 621 exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger 621 abuts against the reset torsion spring 650; the first direction is the direction in which the trigger 621 rotates from the initial position to the working position.

[0432] The above method can improve the positioning accuracy of the Y-axis zero position. When the Y-axis slider 126 experiences its first collision, it may not necessarily be that the Y-axis slider 126 collided with the Y-axis zero position surface 1131; it could also be that the Y-axis slider 126 accidentally touched another component. However, as long as the Y-axis slider 126 experiences a second collision, it will definitely collide with the Y-axis zero position surface 1131. Therefore, the position of the tool head 700 at the time of the second collision is taken as its zero position in the Y-axis direction.

[0433] In one embodiment, the 3D printing device further includes a drive motor mounted on the rear side 111 for driving the Y-axis slider 126 to slide.

[0434] The collision of the Y-axis slider 126 is determined by detecting the change in the current of the drive motor. The second collision of the Y-axis slider 126 occurs when the drive motor experiences a second change in current.

[0435] By detecting whether the current of the drive motor changes abruptly, it can be confirmed whether the Y-axis slider 126 has collided. The second collision occurs when the drive motor experiences a second sudden current change.

[0436] In one embodiment, the 3D printing equipment further includes an encoder connected to the drive motor; the zero-position verification method further includes:

[0437] When a second change in the drive motor is detected, the current angle of the encoder is recorded as zero.

[0438] At this point, the adjustment of the tool head 700's movement displacement can be based on the zero position obtained from the encoder.

[0439] The following is based on Figure 1 The cutter triggering device 600 of the illustrated embodiment is mounted on Figure 15 Taking the left side portion 113, and the side closer to the rear portion 111 (i.e., the trigger end of the trigger element is located away from the rear portion 111), as an example, the working process of the cutter triggering device 600 is described. The direction of rotation of the trigger element 621 from its initial position to its working position is denoted as the first rotation direction, and its opposite direction as the second rotation direction. The direction in which the Y-axis slider slides towards the rear portion 111 is denoted as the first sliding direction, and its opposite direction as the second sliding direction. (Reference) Figure 1 This is a schematic diagram of the trigger 621 in its initial state. In this position, the standby groove 6218a engages with the limiting ball 640. When cutting is required, the Y-axis slider slides along the first sliding direction, passing the position corresponding to the trigger 621 (including the working position) until the Y-axis slider collides with the trigger block, pushing the trigger rack 631 to slide along the first sliding direction. Through the sequential transmission of the drive gear 632, drive rack 633, and rotating part 6213c, the trigger 621 is driven to rotate along the first rotation direction until the rotating rod rotates to the working position. The working groove 6218b on the trigger 621 engages with the limiting ball 640 to limit the trigger 621 to the working position. Figure 10 As shown, at this time, by sliding along the X-axis, the tool head can cause the cutting assembly 710 to push against the trigger 621, as... Figure 18 As shown, the wire is then cut. In the embodiment where the rod 6212 slides relative to the rotating part 6213a, when the tool head slides to the point where the cutting assembly 710 contacts the trigger 621, the rod 6212 will first slide to abut against the base 610 or frame 110 as the cutting assembly 710 continues to slide, before the wire can be cut. Afterwards, the Y-axis slider slides along the second sliding direction, thereby pushing the trigger 621 to rotate along the second rotation direction. Specifically, it may push the first trigger protrusion 6214 on the trigger 621 to return to its initial position.

[0440] As mentioned earlier, sometimes the trigger 621 may be accidentally activated or subjected to unexpected operation, causing it to rotate under external force. Thanks to the reset torsion spring 650, when it rotates beyond the over-rotation position, it can return to the over-rotation position under the action of the reset torsion spring 650 after the external force disappears. The over-rotation groove 6218c, in cooperation with the limiting ball 640, restricts the trigger 621 to the over-rotation position. Figure 11 As shown. In this case, when it is necessary to cut the wire, the Y-axis slider slides along the first sliding direction. It first slides past the working position and then continues to slide, thereby pushing the trigger 621 to rotate. Specifically, the trigger 621 can be rotated along the first rotation direction by the Y-axis slider pushing against the second trigger protrusion 6215. During the continued rotation of the trigger 621, the reset torsion spring 650 abuts against the trigger 621. When the trigger 621 rotates to a certain position, such as... Figure 12 In the avoidance position shown, the trigger 621 separates from the Y-axis slider, that is, the Y-axis slider passes the second trigger protrusion 6215. The trigger 621 rotates in the opposite direction under the reset force of the reset torsion spring 650, that is, it rotates along the second rotation direction. When it rotates to the over-rotation position, it stops rotating under the action of the limit ball 640. By the reverse movement of the Y-axis slider, that is, the movement along the second sliding direction, it can push the trigger 621 to continue rotating in the second rotation direction until it rotates to the working position and stops pushing. Specifically, the Y-axis slider can push against the first trigger protrusion 6214. In the working position, under the limiting cooperation of the working groove and the limit ball 640, the trigger 621 can be reliably and stably restricted in the working position. Then, as described above, the tool head moves in the normal state to cut the material. After cutting the material, the trigger 621 is reset to the initial position in the aforementioned manner.

[0441] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0442] It should be understood that the above embodiments are merely exemplary and not restrictive. Various obvious or equivalent modifications or substitutions that can be made by those skilled in the art regarding the above details without departing from the basic principles of the present invention will be included within the scope of the claims of the present invention.

Claims

1. A cutting trigger device for a 3D printing device, the 3D printing device comprising a frame, a tool head, and a cutting assembly, the cutting assembly being disposed on the tool head, the tool head being mounted on the frame, and operating by moving along the X-axis and / or Y-axis of the 3D printing device; characterized in that, The cutter triggering device includes a base, a triggering component, and a driving component; The triggering component includes a triggering structure rotatably connected to the base. The triggering element has an initial position and a working position. In the initial position, the triggering element is located outside the movement space of the tool head. In the working position, the triggering element is at least partially located in the movement space, for triggering the cutting component to cut the material. The drive assembly is mounted on the base and is used to drive the trigger to rotate.

2. The cutter triggering device according to claim 1, characterized in that, The rotation axis of the trigger is perpendicular to the XY plane of the 3D printing equipment.

3. The cutter triggering device according to claim 2, characterized in that, Projecting along the rotation axis of the trigger, the line connecting the trigger point of the trigger and the center point of its rotation support section is taken as the center line, which is perpendicular to the rotation axis. Alternatively, the normal direction of the trigger point of the trigger element is perpendicular to the rotation axis of the trigger element when it is triggered.

4. The cutter triggering device according to claim 3, characterized in that, The drive assembly includes a trigger rack, a drive gear, and a first transmission mechanism. The trigger rack is slidably mounted on the base, and the drive gear is rotatably mounted on the base and meshes with the trigger rack. The trigger is provided with meshing teeth at the rotation axis, and the meshing teeth are driven to engage with the drive gear through the first transmission mechanism.

5. The cutter triggering device according to claim 4, characterized in that, The first transmission mechanism includes an odd number of first transmission gears that mesh with each other sequentially. Of these odd number of meshing first transmission gears, the two most distant first transmission gears mesh with the driving gear and the meshing teeth on the trigger element, respectively. The first transmission mechanism includes a drive rack, which is slidably mounted on the base along a direction parallel to the trigger rack, and is connected to the trigger rack via the drive gear; The meshing teeth on the trigger engage with the drive rack.

6. The cutter triggering device according to claim 5, characterized in that, At least one of the trigger rack and the drive rack is a sliding rack, and the sliding rack is provided with a plurality of mounting holes along its sliding direction; the base is provided with a sliding mounting groove corresponding to the position of the sliding rack. The drive assembly further includes a limiting member, which is selectively mounted in at least one of the mounting holes, with its end extending out of the mounting hole and slidingly engaging with the sliding mounting groove to adjust the sliding stroke and starting position of the sliding rack.

7. The cutter triggering device according to claim 5, characterized in that, The transmission end of the triggering element meshes with the drive rack. In the initial position, the triggering element and the drive rack are arranged parallel to each other, and the triggering end of the triggering element and the drive gear are located on opposite sides of the transmission end. The trigger rack and the triggering element are located on the same side of the drive rack.

8. The cutter triggering device according to claim 7, characterized in that, Projecting along the rotation axis of the trigger, the active space of the trigger overlaps with the sliding stroke of the trigger rack.

9. The cutter triggering device according to claim 5, characterized in that, The 3D printing equipment includes a frame, a Y-axis slide rail, and a Y-axis slider. The Y-axis slide rail is mounted on the frame, and the Y-axis slider is slidably mounted on the Y-axis slide rail. The base is mounted on the frame. In the initial position, the center line of the trigger is parallel to the Y-axis slide rail. In the working position, the center line of the trigger is perpendicular to the Y-axis slide rail. The trigger rack is at least partially located within the sliding stroke of the Y-axis slider so as to drive the trigger rack to move by sliding the Y-axis slider.

10. The cutter triggering device according to claim 9, characterized in that, The trigger rack includes a rack portion and a trigger block. The trigger block protrudes from the rack portion and is located within the stroke of the Y-axis slider. The Y-axis slider drives the trigger rack to move by triggering the trigger block. The trigger rack meshes with the drive gear through the rack portion, and the rack portion is offset from the Y-axis slider in the Z-axis direction, wherein the Z-axis direction is perpendicular to the XY plane of the print head movement.

11. The cutter triggering device according to claim 10, characterized in that, The trigger element has a first trigger protrusion protruding outward. In the working position, the first trigger protrusion is located on the side close to the drive gear and within the sliding stroke of the Y-axis slider, so that the trigger element can be rotated from the working position to the initial position by pushing the first trigger protrusion through the Y-axis slider.

12. The cutter triggering device according to claim 11, characterized in that, The trigger element is also provided with a second trigger protrusion, and the first trigger protrusion and the second trigger protrusion are symmetrically arranged about the center line of the trigger element; The first trigger protrusion and the second trigger protrusion have guide slopes at their two ends along the center line, and the tops of the two guide slopes on the same side of the center line are close to each other.

13. The cutter triggering device according to claim 10, characterized in that, The sliding directions of the trigger rack and the drive rack relative to the base are opposite, and during the process of the Y-axis slider triggering the drive rack, it first passes the position of the trigger element and then slides to the position of triggering the trigger rack.

14. The cutter triggering device according to claim 4, characterized in that, The triggering element includes a rod and a transmission element connected to each other. The transmission element includes a rotating part with a ring-shaped structure. At least a portion of the outer circumferential surface of the rotating part is provided with meshing teeth that mesh with the driving teeth. The rotating part is rotatably mounted on the base. The triggering element is rotatably connected to the base through the rotating part. In the direction of the rotation axis, the rod and the rotating part are misaligned.

15. The cutter triggering device according to claim 14, characterized in that, The rod is slidably disposed relative to the transmission member along the center line; in the working position, the rod slides away from the tool head under the action of the cutting assembly and can abut against the base or the frame.

16. The cutter triggering device according to claim 15, characterized in that, The transmission component further includes a sleeve portion, and the rotating portion is connected to the sleeve portion; the rod body is slidably inserted into the sleeve portion; or, It also includes a slider shaft, and the rotating part is rotatably mounted on the base via the slider shaft; The rod body is provided with a strip-shaped hole, the extension direction of the strip-shaped hole is consistent with the center line of the rod body, and the slider shaft is slidably engaged with the strip-shaped hole so that the rod body can slide along the extension direction of the strip-shaped hole.

17. The cutter triggering device according to claim 15, characterized in that, It also includes a position detection mechanism, wherein the position detection device is mounted on at least one of the base and the trigger member, for detecting the position of rotation of the trigger member.

18. The cutter triggering device according to claim 17, characterized in that, The position detection mechanism includes a magnet and a Hall sensor. In the region near the rotation axis, one of the base and the trigger is equipped with a magnet, and the other with a Hall sensor. In the working position, the magnet and the Hall sensor are opposite each other to detect when the trigger has rotated to the working position; or... The position detection mechanism includes a displacement switch and a detection structure. One of the trigger and the base is provided with a displacement switch, and the other is provided with a detection structure. When the trigger rotates to the working position, the detection structure triggers the displacement switch.

19. The cutter triggering device according to claim 3, characterized in that, The transmission end of the trigger is provided with meshing teeth; the driving assembly includes a drive motor and a second transmission mechanism. The drive motor is mounted on the base or the frame and engages with the meshing teeth of the trigger through the second transmission mechanism to drive the trigger to rotate. Wherein, the second transmission mechanism includes one or more second transmission gears, and the drive shaft of the drive motor is inserted into and connected to the second transmission gear; or, The second transmission mechanism includes a worm gear, and the drive shaft of the drive motor is inserted and connected to the worm gear; or, The transmission end of the trigger is directly connected to the drive shaft of the drive motor.

20. The cutter triggering device according to claim 3, characterized in that, The centerline of the trigger is parallel to the X-axis in the working position, wherein the Y-axis is the axis of the movement direction of the X-axis system, and the X-axis is the axis of the direct sliding direction of the tool head.

21. The cutter triggering device according to claim 1, characterized in that, The rotation axis of the trigger is parallel to the XY plane of the 3D printing equipment.

22. The cutter triggering device according to claim 21, characterized in that, Projecting along a direction perpendicular to the XY plane, the line connecting the trigger point of the trigger element and the center point of its rotating support section is taken as the center line, and the center line forms an angle with the rotation axis. Alternatively, the normal direction of the trigger point of the trigger element at the time of triggering forms an angle with the rotation axis of the trigger element.

23. The cutter triggering device according to claim 21, characterized in that, Projecting along the rotation axis of the trigger, the line connecting the trigger point of the trigger and the center point of its rotation support section is taken as the center line, which is perpendicular to the rotation axis. Alternatively, the normal direction of the trigger point of the trigger element is parallel to the rotation axis of the trigger element when it is triggered.

24. The cutter triggering device according to claim 23, characterized in that, The triggering element includes a triggering arm and a triggering structure. The triggering arm is rotatably mounted on the frame or the base and is disposed adjacent to the frame. The rotation axis of the triggering arm is perpendicular to the extension direction of the triggering arm and parallel to the XY plane of the XY motion mechanism. The triggering part protrudes from the side of the triggering arm away from the frame. The triggering structure has an initial position and a working position. In the initial position, the triggering structure is located outside the movement space of the tool head. In the working position, the triggering structure is located in the movement space and is used to trigger the cutting assembly to cut the material.

25. The cutter triggering device according to claim 24, characterized in that, The XY motion mechanism includes a Y-axis slider, which is slidably mounted on the frame. The triggering component also includes a drive rod, which is bent and connected to the triggering arm. The rotation axis is located at the bent connection. The drive rod is located adjacent to the frame and is partially located within the sliding stroke of the Y-axis slider.

26. The cutter triggering device according to claim 23, characterized in that, In the initial position, the trigger structure is located above the sliding space of the Y-axis slider; the Y-axis slider first passes through the area below the trigger and then slides to abut against the drive rod, so that the trigger structure rotates from the initial position to the working position.

27. The cutter triggering device according to claim 24, characterized in that, The trigger also includes a guide block connected to the trigger arm. In the working position, the guide block is located within the sliding stroke of the Y-axis slider. After the trigger structure rotates from the initial position to the working position by pushing the drive rod against the Y-axis slider, the trigger structure rotates back to the initial position by pushing the guide block against the Y-axis slider.

28. The cutter triggering device according to claim 27, characterized in that, The guide block is disposed between the trigger arm and the trigger structure, and the two end faces of the guide block along the extension direction of the trigger arm respectively form guide slopes.

29. The cutter triggering device according to claim 24, characterized in that, It also includes a drive motor, which is mounted on the frame or the base, and its drive shaft is either directly or in a transmission connection to the trigger arm.

30. The cutter triggering device according to claim 24, characterized in that, It also includes a base, which has a plate-like structure and is fitted to the inner wall of the frame; the triggering component is mounted on the frame via the base; The cutter triggering device also includes a reset spring, which is disposed between the trigger arm and the base or the frame, so that the triggering structure returns to the initial position after the external force on the triggering component disappears.

31. The cutter triggering device according to claim 24, characterized in that, It also includes an elastic positioning structure, which includes a protrusion structure disposed on the base or the frame; during the process of the trigger structure rotating from the initial position to the working position, the trigger arm passes over the elastic positioning structure and abuts against the trigger arm in the working position to restrict the trigger arm from driving the trigger structure to rotate back to the initial position.

32. The cutter triggering device according to claim 31, characterized in that, The elastic positioning structure further includes a limiting structure disposed on the base or the frame; when the trigger arm is in the working position, the limiting structure is located on the other side of the trigger arm opposite to the elastic positioning structure, and is used to limit the extreme rotation position of the trigger arm.

33. The cutter triggering device according to claim 31, characterized in that, The positioning structure also includes an elastic arm, one end of which is connected to the base, and the other end of which is provided with the protruding structure and the limiting structure.

34. The cutter triggering device according to claim 24, characterized in that, The triggering structure includes a rod body, which is slidably connected to the triggering arm in a direction perpendicular to the rotation plane of the triggering arm; in the working position, one end of the rod body can extend out of the triggering arm and abut against the base or the frame; The triggering structure further includes a sleeve portion connected to the triggering arm, and the rod body slidably inserted into the sleeve portion; or, The rod body is provided with a strip-shaped hole, and the extension direction of the strip-shaped hole is consistent with the axial direction of the rod body; the trigger arm is provided with a slider that cooperates with the strip-shaped hole.

35. The cutter triggering device according to claim 1, characterized in that, The base is provided with a limiting groove, and a limiting ball is installed in the limiting groove; The trigger is provided with a standby groove and a working groove. The trigger is rotatably connected to the base. The trigger has an initial position and a working position. In the initial position, the trigger is located outside the movement space of the tool head, and the limiting ball is in limiting engagement with the standby groove. In the working position, the trigger is at least partially located in the movement space, and the limiting ball is in limiting engagement with the working groove, so as to trigger the cutting assembly to cut the material through the trigger. The drive assembly is mounted on the base and is used to drive the trigger to rotate.

36. The cutter triggering device according to claim 35, characterized in that, The triggering element includes a transmission element and a rod body connected to each other. The transmission element includes a rotating part and a connecting plate. The rotating part is rotatably mounted on the base. The connecting plate is connected to the rotating part and is located on the side of the rotating part closer to the base. The standby groove and the working groove are both provided on the connecting plate. Within the rotation stroke of the triggering element, the limiting ball is pressed against the connecting plate. The trigger is rotatably connected to the base via the transmission component.

37. The cutter triggering device according to claim 36, characterized in that, The center of the working groove forms a central plane with the rotation axis of the rotating part; the connecting plate is provided along the outer periphery of the rotating part, and two standby grooves are provided on it, and the two standby grooves are symmetrical about the central plane.

38. The cutter triggering device according to claim 37, characterized in that, The connecting plate is also provided with a connecting groove; each of the standby grooves is connected to the working groove through the connecting groove, and along the direction of the rotation axis of the rotating part, the depth of the connecting groove is less than the depth of the standby groove and the working groove.

39. The cutter triggering device according to claim 35, characterized in that, The cutter triggering device also includes a reset torsion spring, which is movably mounted on the base, with one side fixed relative to the base and the other side being a free end; Along the first rotational direction from the initial position to the working position, the free end is located outside the working position so that it can abut against the reset torsion spring when the trigger rotates to the outside of the working position.

40. The cutter triggering device according to claim 39, characterized in that, The trigger element is provided with abutting groove or abutting protrusion; the free end of the reset torsion spring is located within the stroke of the abutting groove or abutting protrusion, so that when the trigger element rotates to the outside of the working position along the first rotation direction, it abuts against the reset torsion spring through the abutting groove or abutting protrusion.

41. The cutter triggering device according to claim 36, characterized in that, The center of the limiting ball, the rotation axis of the trigger, and the center line of the rod in the working position are arranged in the same plane.

42. The cutter triggering device according to claim 35, characterized in that, A compression spring is installed between the limiting groove and the limiting ball.

43. The cutter triggering device according to claim 1, characterized in that, The cutter triggering device also includes a reset torsion spring; The base is provided with a limiting groove, and a limiting ball is installed in the limiting groove; The triggering assembly includes a trigger element, which has a standby groove, a working groove, and an over-rotation groove. The trigger element is rotatably mounted on the base. Within its rotational stroke, the trigger element is sequentially configured with an initial position, a working position, and an over-rotation position along a first rotational direction. In the initial position, the trigger element is located outside the movement space of the tool head, and a limiting ball engages with the standby groove for limiting. In the working position, the trigger element is at least partially located within the movement space, and the limiting ball engages with the working groove for limiting, thereby triggering the cutting assembly to cut material. In the over-rotation position, the limiting ball engages with the over-rotation groove for limiting, thereby positioning the trigger element at an over-rotation position exceeding the working position. The first rotational direction refers to the direction from the initial position to the working position with a minimum rotation angle. The reset torsion spring is movably mounted on the base, with its first side abutting against the base or the drive assembly, and its second side located in the section of the trigger member's rotational stroke along the first rotational direction that exceeds the working position or the over-rotation position, so that when the trigger member rotates along the first rotational direction to exceed the over-rotation position, it will return to the over-rotation position under the reset force of the reset torsion spring. The drive assembly is mounted on the base and is used to drive the trigger to rotate.

44. The cutter triggering device according to claim 43, characterized in that, The base has a U-shaped structure and includes a base plate, a first side plate, and a second side plate. The first side plate and the second side plate are arranged opposite to each other and connected to the same side of the base plate.

45. The cutter triggering device according to claim 44, characterized in that, The drive assembly is disposed inside the U-shaped structure and is located close to the first side plate and the second side plate, respectively; the reset torsion spring is movably mounted on the base plate; and the limiting ball is disposed on the base plate.

46. ​​The cutter triggering device according to claim 43, characterized in that, The 3D printing equipment also includes a Y-axis slider, which is slidably mounted on the frame; the triggering element includes a rod and a transmission element. The transmission component includes a sleeve portion, and the rod body is inserted into and connected to the sleeve portion; one end of the sleeve portion is rotatably mounted on the base and drives the assembly; the sleeve portion is provided with a first trigger protrusion and a second trigger protrusion on both radially sides; or, The triggering assembly further includes a slider shaft, and the transmission component includes a rotating part, which is rotatably mounted on the base via the slider shaft; the rod body is provided with a strip-shaped hole, the extension direction of the strip-shaped hole is consistent with the center line of the rod body, the slider shaft is slidably engaged with the strip-shaped hole so that the rod body slides along the extension direction of the strip-shaped hole, and the rod body is provided with a first trigger protrusion and a second trigger protrusion on both radial sides respectively; In the initial position, both the first trigger protrusion and the second trigger protrusion are located outside the stroke of the Y-axis slider; in the working position, at least the first trigger protrusion is located within the stroke of the Y-axis slider; and in the over-rotation position, at least the second trigger protrusion is located within the stroke of the Y-axis slider.

47. The cutter triggering device according to claim 46, characterized in that, The transmission component further includes a rotating part connected to one end of the sleeve portion. The rotating part is rotatably mounted on the base to drive the sleeve and the rod to rotate. The outer periphery of the rotating part meshes with the drive teeth. There is a clearance space between the drive gear and the rotating part for the rod to rotate. When the rod is located in the clearance space, the reset torsion spring abuts against the trigger member, and the Y-axis slider can make the rod be located in the clearance space by pushing against the second trigger protrusion. In at least one position, the Y-axis slider can pass over the second trigger protrusion.

48. The cutter triggering device according to claim 46, characterized in that, The 3D printing equipment also includes a Y-axis slider that slides along the Y-axis direction. The Y-axis slider can rotate the trigger by pushing against the drive assembly. The Y-axis slider first pushes the drive assembly to put the trigger in the working position, and then the Y-axis slider moves back in the opposite direction to the Y-axis position that rotates the trigger to the working position.

49. The cutter triggering device according to claim 43, characterized in that, The center of the working groove forms a central plane with the rotation axis of the trigger; the trigger is provided with two standby grooves and two over-rotation grooves symmetrical about the central plane.

50. A 3D printing device, characterized in that, The device includes a frame, a tool head, a cutting assembly, and a cutter triggering device as described in any one of claims 1-49, wherein the tool head is movably mounted on the frame, the cutting assembly is disposed on the tool head, and the base is mounted on the frame; In the initial position, the trigger is disposed adjacent to the frame and outside the movement space of the tool head; in the working position, the trigger is at least partially located within the movement space of the tool head, and its trigger end is disposed opposite to the cutting assembly for triggering the cutting assembly to cut the material.

51. The 3D printing equipment according to claim 50, characterized in that, It also includes a wiping nozzle assembly and a trash can arranged within the frame, the cutter triggering device being located close to the wiping nozzle assembly and / or the trash can, and the three sharing the space within the frame in the Y-axis direction; And / or, projected along the X-axis, the cutter triggering device has an overlapping area with the wiping nozzle assembly or the trash can.

52. The 3D printing equipment according to claim 1, characterized in that, The frame and the base are an integral structure.

53. A cutting trigger device for a 3D printing device, the 3D printing device comprising a frame, an XY motion mechanism, a tool head, and a cutting assembly, wherein the XY motion mechanism is mounted on the frame, the tool head is movably disposed within the frame via the XY motion mechanism, and the cutting assembly is disposed on the tool head; characterized in that, The cutter triggering device includes a triggering assembly, which includes a triggering element, which includes a triggering arm and a triggering structure. The triggering arm is rotatably mounted on the frame and is disposed adjacent to the frame. The rotation axis of the triggering arm is perpendicular to the extension direction of the triggering arm and parallel to the XY plane of the XY motion mechanism. The triggering structure protrudes from the side of the triggering arm away from the frame. The triggering structure has an initial position and a working position. In the initial position, the triggering structure is located outside the movement space of the tool head. In the working position, the triggering structure is located in the movement space and is used to trigger the cutting assembly to cut the material.

54. The cutter triggering device according to claim 53, characterized in that, The XY motion mechanism includes a Y-axis slider, which is slidably mounted on the frame. The triggering component also includes a drive rod, which is bent and connected to the triggering arm. The rotation axis is located at the bend between the two. The drive rod is located adjacent to the frame and is partially located within the sliding stroke of the Y-axis slider.

55. The cutter triggering device according to claim 53, characterized in that, In the initial position, the trigger structure is located above the sliding space of the Y-axis slider; the Y-axis slider first passes through the area below the trigger structure and then slides to abut against the drive rod, so that the trigger structure rotates from the initial position to the working position.

56. The cutter triggering device according to claim 55, characterized in that, The trigger also includes a guide block connected to the trigger arm. In the working position, the guide block is located within the sliding stroke of the Y-axis slider. After the trigger structure rotates from the initial position to the working position by pushing the drive rod against the Y-axis slider, the trigger structure rotates back to the initial position by pushing the guide block against the Y-axis slider.

57. The cutter triggering device according to claim 56, characterized in that, The guide block is disposed between the trigger arm and the trigger structure.

58. The cutter triggering device according to claim 56, characterized in that, The guide block forms guide ramps on its two end faces along the extension direction of the trigger arm.

59. The cutter triggering device according to claim 53, characterized in that, It also includes a drive motor, which is mounted on the frame and whose drive shaft is either directly or in a transmission connection to the trigger arm.

60. The cutter triggering device according to claim 59, characterized in that, It also includes a base, which has a plate-like structure and is fitted to the inner wall of the frame; the triggering component is mounted on the frame via the base; The aforementioned knife triggering device also includes a reset spring, which is disposed between the triggering arm and the base so that the triggering structure returns to the initial position after the external force on the triggering component disappears.

61. The cutter triggering device according to claim 60, characterized in that, It also includes an elastic positioning structure, which further includes a protrusion structure disposed on the base or the frame; during the process of the trigger structure rotating from the initial position to the working position, the trigger arm passes over the elastic positioning structure and abuts against the trigger arm in the working position to restrict the trigger arm from driving the trigger structure to rotate back to the initial position.

62. The cutter triggering device according to claim 61, characterized in that, The elastic positioning structure further includes a limiting structure disposed on the base or the frame; when the trigger arm is in the working position, the limiting structure is located on the other side of the trigger arm opposite to the elastic positioning structure, and is used to limit the extreme rotation position of the trigger arm.

63. The cutter triggering device according to claim 61, characterized in that, The positioning structure also includes an elastic arm, one end of which is connected to the base, and the other end of which is provided with the protruding structure.

64. The cutter triggering device according to claim 53, characterized in that, The triggering structure includes a rod body, which is slidably connected to the triggering arm in a direction perpendicular to the rotation plane of the triggering arm; in the working position, one end of the rod body can extend out of the triggering arm and abut against the base or the frame; The triggering structure further includes a sleeve portion connected to the triggering arm, and the rod body slidably inserted into the sleeve portion; or, The rod body is provided with a strip-shaped hole, and the extension direction of the strip-shaped hole is consistent with the axial direction of the rod body; the trigger arm is provided with a slider that cooperates with the strip-shaped hole.

65. The cutter triggering device according to any one of claims 53-64, characterized in that, The trigger is a cylindrical or conical structure with a chamfer at the end.

66. A cutting triggering device for a 3D printing device, the 3D printing device comprising a tool head and a cutting assembly, the cutting assembly being disposed on the tool head; characterized in that, The cutter triggering device includes a base, a triggering component, and a driving component; The base is provided with a limiting groove, and a limiting ball is installed in the limiting groove; The triggering component includes a trigger member, which has a standby groove and a working groove. The trigger member is rotatably connected to the base and has an initial position and a working position. In the initial position, the trigger member is located outside the movement space of the tool head, and the limiting ball is in a limiting engagement with the standby groove. In the working position, the trigger member is at least partially located in the movement space, and the limiting ball is in a limiting engagement with the working groove, so as to trigger the cutting component to cut the material through the trigger member. The drive assembly is mounted on the base and is used to drive the trigger to rotate.

67. The cutter triggering device according to claim 66, characterized in that, The triggering element includes a transmission element and a rod body connected to each other. The transmission element includes a rotating part and a connecting plate. The rotating part is rotatably mounted on the base. The connecting plate is connected to the rotating part and is located on the side of the rotating part closer to the base. The standby groove and the working groove are both provided on the connecting plate. Within the rotation stroke of the triggering element, the limiting ball is pressed against the connecting plate. The trigger is rotatably connected to the base via the transmission component.

68. The cutter triggering device according to claim 67, characterized in that, In the direction of the rotation axis of the rotating part, the rod body is offset from the rotating part, and the rod body is slidably disposed relative to the transmission component along the center line of the rod body; in the working position, the rod body slides away from the tool head under the action of the cutting assembly, and can abut against the base or the frame of the 3D printing equipment; The transmission component further includes a sleeve portion, and the rotating portion is connected to one end of the sleeve portion; the rod body is slidably inserted into the sleeve portion; or, The cutter triggering device further includes a slider shaft, and the rotating part is rotatably mounted on the base via the slider shaft; The rod body is provided with a strip-shaped hole, the extension direction of which is consistent with the center line of the rod body, and it slides in conjunction with the slider shaft.

69. The cutter triggering device according to claim 66, characterized in that, The drive assembly includes a trigger rack, a drive gear, and a first transmission mechanism. The trigger rack is slidably mounted on the base, and the drive gear is rotatably mounted on the base and meshes with the trigger rack. The outer periphery of the rotating part is provided with meshing teeth, which are driven to engage with the drive gear through the first transmission mechanism.

70. The cutter triggering device according to claim 69, characterized in that, The first transmission mechanism includes an odd number of sequentially meshing first transmission gears. Of these odd number of meshing first transmission gears, the two most distant first transmission gears mesh with the driving gear and the meshing teeth on the trigger element, respectively; or, The first transmission mechanism includes a drive rack, which is slidably mounted on the base along a direction parallel to the trigger rack, and is connected to the trigger rack via the drive gear; The meshing teeth on the rotating part mesh with the driving rack.

71. The cutter triggering device according to claim 66, characterized in that, The center of the working groove forms a central plane with the rotation axis of the rotating part; the connecting plate is provided along the outer periphery of the rotating part, and two standby grooves are provided on it, and the two standby grooves are symmetrical about the central plane.

72. The cutter triggering device according to claim 66, characterized in that, The connecting plate is also provided with a connecting groove; each of the standby grooves is connected to the working groove through the connecting groove, and along the direction of the rotation axis of the rotating part, the depth of the connecting groove is less than the depth of the standby groove and the working groove.

73. The cutter triggering device according to claim 66, characterized in that, The cutter triggering device also includes a reset torsion spring, which is movably mounted on the base, with one side fixed relative to the base and the other side being a free end; Along the first rotational direction from the initial position to the working position, the free end is located outside the working position so that it can abut against the reset torsion spring when the trigger rotates to the outside of the working position.

74. The cutter triggering device according to claim 73, characterized in that, The trigger element is provided with abutting groove or abutting protrusion; the free end of the reset torsion spring is located within the stroke of the abutting groove or abutting protrusion, so that when the trigger element rotates to the outside of the working position along the first rotation direction, it abuts against the reset torsion spring through the abutting groove or abutting protrusion.

75. The cutter triggering device according to claim 66, characterized in that, The center of the limiting ball, the axis of rotation, and the center line of the rod in the working position are arranged in the same plane.

76. The cutter triggering device according to claim 66, characterized in that, A compression spring is installed between the limiting groove and the limiting ball.

77. A 3D printing device, comprising a frame, an XY motion mechanism, a tool head, and a controller, wherein the frame includes a rear portion and side portions connected to both ends of the rear portion, the side portions having a Y-axis mounting structure; the XY motion mechanism includes a Y-axis slide rail and a Y-axis slider, the Y-axis slide rail being mounted on the Y-axis mounting structure, and the Y-axis slider being slidably mounted on the Y-axis slide rail; the tool head is mounted on the XY motion mechanism, characterized in that... The side portion has a Y-axis zero-position surface in the area near the rear portion; The 3D printing equipment further includes a cutter triggering device, which comprises a base, a triggering component, and a driving component. The base is installed on the side portion near the rear portion. The triggering component includes a trigger member, which is rotatably connected to the base about a rotation axis perpendicular to the XY plane of the XY motion mechanism. The driving component includes a trigger driving component and a first transmission mechanism. The trigger driving component is slidably disposed on the base along a direction parallel to the Y-axis slide rail and drives the trigger member to rotate through the first transmission mechanism. The Y-axis zero-position surface and the trigger drive are both located within the sliding stroke of the Y-axis slider, and the Y-axis zero-position surface is closer to the rear side than the trigger drive, so that the trigger drive is triggered first to drive the trigger to rotate during the sliding of the Y-axis slider toward the rear side, and then touches the Y-axis zero position. When the tool head is performing zero-position verification, the Y-axis slider is controlled to slide towards the rear. When a second collision is detected, it is determined that the Y-axis slider has touched the Y-axis zero-position surface. The position of the tool head at this time is taken as its zero position in the Y-axis direction.

78. The 3D printing equipment according to claim 77, characterized in that, A reset torsion spring is provided between the trigger and the base so that the trigger can rotate in the opposite direction under the action of the reset torsion spring when the external force on it disappears.

79. The 3D printing equipment according to claim 78, characterized in that, When the tool head performs a zero-position check, if the trigger is in the initial position, Control the Y-axis slider to slide towards the rear until it passes the trigger and pushes against the trigger drive until the Y-axis slider collides with the Y-axis zero surface, which is the first collision of the Y-axis slider. Then, the Y-axis slider is controlled to slide a first preset distance away from the rear side until it is separated from the trigger drive. At the same time, the trigger rotates in the opposite direction to the over-rotation position under the action of the reset torsion spring. Then, control the Y-axis slider to slide towards the rear until the Y-axis slider slides to touch the Y-axis zero position again, which is the second collision of the Y-axis slider. Wherein, the over-rotation position is located where the trigger element exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger element abuts against the reset torsion spring; the first rotation direction is the direction in which the trigger element rotates from the initial position to the working position.

80. The 3D printing equipment according to claim 78, characterized in that, The trigger element has a second trigger protrusion protruding radially. In the initial position, the second trigger protrusion is located on the side of the trigger element near the side portion. When the tool head is performing zero-position verification, if the trigger element is in a position other than the initial position... Control the Y-axis slider to slide towards the rear until it pushes against the second trigger protrusion, causing the trigger to rotate until the Y-axis slider passes the second trigger protrusion and separates from the second trigger protrusion; The Y-axis slider is controlled to continue sliding towards the rear until it collides with the Y-axis zero-position surface, which is the first collision. After that, the Y-axis slider is controlled to move in the opposite direction a second preset distance. At the same time, the trigger drive is rotated in the opposite direction to the over-rotation position under the action of the reset torsion spring. Then, control the Y-axis slider to slide towards the rear until it collides with the Y-axis zero position surface, which is the second collision. Wherein, the over-rotation position is located where the trigger element exceeds the working position in the first rotation direction, and after exceeding the over-rotation position, the trigger element abuts against the reset torsion spring; the first rotation direction is the direction in which the trigger element rotates from the initial position to the working position.

81. The 3D printing equipment according to claim 79 or 80, characterized in that, The base is provided with a limiting groove, and a limiting ball is installed in the limiting groove; The trigger is provided with a standby groove, a working groove, and a rotation groove; the initial position, working position, and rotation position are sequentially arranged in the first rotation direction of the trigger. In the initial position, the limiting ball is limited to the standby groove; in the working position, the limiting ball is limited to the working groove; and in the rotation position, the limiting ball is limited to the rotation groove.

82. The 3D printing equipment according to claim 77, characterized in that, It also includes a drive motor, which is mounted on the rear side and is used to drive the Y-axis slider to slide; The collision of the Y-axis slider is determined by detecting the change in the current of the drive motor. The second collision of the Y-axis slider occurs when the second change in the current of the drive motor occurs. The 3D printing equipment also includes an encoder connected to the drive motor. When a second change in the drive motor is detected, the current angle of the encoder is recorded as zero.

83. The 3D printing equipment according to claim 77, characterized in that, It also includes a nozzle assembly and a printing panel, with the nozzle assembly disposed on the inner side of the rear portion; the rotation axis of the trigger is perpendicular to the XY plane of the 3D printing equipment, and the line connecting the trigger point of the trigger and the center point of its rotation support section is used as the center line, and the center line of the trigger is perpendicular to the Y-axis in the working position; Projecting along the X-axis, the centerline of the trigger is located inside the rear side of the printing platform, and the distance between the centerline of the trigger and the side of the printing panel near the rear side is between 0-25mm; or, Projected along the X-axis, the centerline of the trigger is located inside the wiping nozzle assembly, and the distance between the centerline of the trigger and the shape center of the wiping nozzle assembly is between 1 and 30 mm.

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