Cutter structure, printing head and 3D printer

Abstract

The utility model discloses a cutter structure, which is characterized in that an upper shell detachably connected with a shell of a printing head is arranged, and a cutter assembly used for cutting consumables is arranged on the upper shell and is rotationally connected with the upper shell to form a cutter structure capable of being modularly detached, so that the cutter structure is modularly arranged on the printing head; by opening the upper shell of the cutter structure, the cutter structure can be conveniently and independently detached and detected, and the whole machine can be linked to change materials. According to the main technical scheme, the cutter structure is applied to the printing head, the printing head comprises a shell, and the cutter structure comprises an upper shell body, a lower shell body and a cutter, the upper shell is provided with a cutter assembly rotationally connected with the upper shell, and the cutter assembly is used for cutting consumables.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a cutter structure, a print head and a 3D printer. Background Art

[0002] 3D printer technology is a technology that uses digital model files, powdered metal or plastic and other bondable materials as printing materials, and then constructs three-dimensional objects by adding materials layer by layer. 3D printer technology is a type of rapid prototyping technology that can print complex geometric shapes and functional parts. 3D printing technology is developing rapidly, and its application scope is constantly expanding, which has a profound impact on many fields such as manufacturing, medicine, architecture, and art.

[0003] The 3D print head, commonly known as the print nozzle or extruder, is one of the key components in a 3D printer. It is responsible for melting or softening the 3D printing material (such as plastic filaments, resins, etc.), extruding it through the internal heating element and nozzle, and building the object layer by layer on the printing platform. In the prior art, the 3D print head structure integrates functional modules such as material cutting and material extrusion, resulting in the cutter structure in the 3D print head being unable to achieve modular disassembly. When the cutter structure is damaged and needs to be replaced, the entire 3D print head needs to be replaced; the detection, maintenance, and replacement of the separate cutter structure are inconvenient and fail to meet the use requirements. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the purpose of the utility model is to provide a cutter structure and a 3D printer.

[0005] In a first aspect, the present application provides a cutter structure applied to a print head, the print head comprising a housing, and the cutter structure comprising:

[0006] An upper shell is detachably connected to the shell; a cutter assembly rotatably connected to the upper shell is provided on the upper shell, and the cutter assembly is used for cutting consumables.

[0007] In one of the embodiments, the cutter structure further includes a lower shell, the upper shell is detachably connected to the lower shell, and a channel for allowing consumables to pass through is provided between the upper shell and the lower shell.

[0008] In one embodiment, the lower shell is integrally formed with the shell, or the lower shell is detachably connected to the shell.

[0009] In one embodiment, if the lower shell is detachably connected to the shell, the lower shell is provided with a first connecting hole, and the first connecting hole realizes the detachable connection between the lower shell and the shell through a fastener;

[0010] The shell comprises a front shell and a rear shell, a receiving space is comprised between the front shell and the rear shell, the upper shell and the lower shell are located in the receiving space, the lower shell is detachably connected to the rear shell, and the rear shell is used to be connected to a 3D printer.

[0011] In one embodiment, the upper shell is provided with at least two second connection holes, the lower shell is provided with at least two third connection holes corresponding to the second connection holes, and at least two of the second connection holes and at least two of the third connection holes are connected to the upper shell and the lower shell in a detachable manner through fasteners; or,

[0012] At least two of the second connection holes and at least two of the third connection holes realize the detachable connection of the upper shell, the lower shell and the shell through fasteners.

[0013] In one embodiment, a receiving chamber is further included between the upper shell and the lower shell, the receiving chamber is communicated with the passage, a first rotating hole is opened on the upper shell, the cutter assembly is rotatably connected to the first rotating hole via a rotating shaft, and the cutter assembly is at least partially disposed inside the receiving chamber; the cutter assembly rotates around the rotating shaft to achieve movement of the cutter assembly in the receiving chamber to block the passage or move away from the passage;

[0014] The cutter assembly comprises a cutter piece and a rotating arm which are fixedly connected. A second rotating hole is provided at the connection between the cutter piece and the rotating arm. The second rotating hole is rotationally connected to the first rotating hole via a rotating shaft.

[0015] In one embodiment, the upper shell is provided with a first connecting end, the rotating arm is provided with a second connecting end, and the cutter structure also includes an elastic member, the first connecting end and the second connecting end are respectively connected to two ends of the elastic member, and when the cutter assembly blocks the consumables in the channel, the elastic member is used to apply force to the cutter assembly away from the consumables.

[0016] In one embodiment, a photoelectric detection module is further provided on the upper shell or the lower shell, and the photoelectric detection module is used to detect whether the cutting member blocks the channel;

[0017] The photoelectric detection module includes a base, and a light emitting end and a receiving end arranged on the base; the receiving end is used to receive the light signal emitted by the light emitting end, and when the cutter component blocks the channel, the cutter component blocks the receiving end from receiving the light signal emitted by the light emitting end; when the cutter component does not block the channel, the receiving end can receive the light signal emitted by the light emitting end;

[0018] The rotating arm is provided with a shielding part, and when the cutting piece blocks the channel, the shielding part blocks the receiving end from receiving the light signal emitted by the light emitting end; when the cutting piece does not block the channel, the receiving end can receive the light signal emitted by the light emitting end;

[0019] The upper shell and the lower shell are respectively provided with slots corresponding to the base, and the base is snapped into the slots of the upper shell and the lower shell;

[0020] The interior of the rotating arm is hollowed out, and reinforcing ribs are arranged inside the rotating arm. The reinforcing ribs are arranged along the rotating direction of the rotating arm.

[0021] In the second aspect, the present application also provides a print head, including a shell and the above-mentioned cutter structure, the print head also includes an extrusion structure, the extrusion structure is used to clamp and extrude consumables, the extrusion structure includes a third shell, a first rotating member and a second rotating member, the first rotating member and the second rotating member are arranged between the third shell and the lower shell, the first rotating member and the second rotating member are relatively arranged on both sides of the channel, the first rotating member and the second rotating member are used to clamp and extrude consumables.

[0022] In a third aspect, the present application also provides a 3D printer, comprising the above-mentioned cutter structure, or the above-mentioned print head.

[0023] The beneficial effects of the utility model are:

[0024] The above-mentioned cutter structure is provided with an upper shell detachably connected to the shell of the print head, and a cutter assembly for cutting consumables is arranged on the upper shell and rotatably connected to the upper shell, so as to form a cutter structure that can be modularly detached, thereby realizing modular arrangement of the cutter structure on the print head. By opening the upper shell of the cutter structure, it is convenient to individually detach and detect the cutter structure and to replace the material in linkage with the whole machine;

[0025] It should be noted that the detachable connection between the upper shell and the print head may be achieved by screws and nuts, by screws and internal threads, by embedding the upper shell in the print head, or by snapping the upper shell and the print head together.

[0026] The print head in the prior art integrates functional modules such as material cutting and material extrusion, which results in the cutter structure in the print head being unable to be modularly disassembled. By providing an upper shell detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, making it convenient to disassemble and detect the cutter structure separately and to replace the material of the whole machine in a linked manner; the convenience of detecting, repairing or replacing the cutter structure is improved, and the overall modular design of the cutter structure makes it more convenient to replace and assemble and easy to disassemble.

[0027] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the invention. The purpose and other advantages of the invention can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the front structure of the cutter structure in the first embodiment of the present invention;

[0029] Figure 2 An exploded view of the cutter structure in the first embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the bottom structure of the cutter structure in the first embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the cutting state detection of the cutter structure in the first embodiment of the present invention;

[0032] Figure 5 Schematic diagram of the uncut material state detection of the cutter structure in the first embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of detecting the uncut material state of the cutter structure base in the first embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the cutting state detection of the cutter structure base in the first embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the side structure of the cutter structure in the first embodiment of the present invention;

[0036] Fig. 9 It is a schematic diagram of the mechanical movement of the cutter member of the cutter structure in the first embodiment of the present invention;

[0037] Fig.10 This is a schematic diagram of the mechanical movement of the cutter assembly of the cutter structure in the first embodiment of the present invention, indicating that the rotating arm rotates in the front-rear direction.

[0038] Reference numerals:

[0039] 1. Upper shell; 2. Lower shell; 3. First connecting hole; 4. Second connecting hole; 5. Third connecting hole; 6. First rotating hole; 7. Second connecting hole; 8. Cutter; 9. Rotating arm; 10. Shielding part; 11. Rotating shaft; 12. Elastic part; 13. Photoelectric detection module; 20. Consumables. DETAILED DESCRIPTION

[0040] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0042] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.

[0043] Unless otherwise specified, the methods and equipment used in the present invention are all conventional reagents, methods and equipment in the technical field.

[0044] In order to facilitate the understanding of the embodiments of the utility model, the cutter structure in the related art is first explained. The print head in the prior art integrates functional modules such as material cutting and material extrusion, resulting in the cutter structure in the print head being unable to achieve modular disassembly. When the cutter structure is damaged and needs to be replaced, the entire print head needs to be replaced; it is inconvenient to detect, repair, and replace the separate cutter structure; at the same time, in the existing cutter structure, the cutter assembly structure and the structure of the detection consumables are complex and fail to meet the use requirements. Based on this, the present application provides a cutter structure.

[0045] As shown in the accompanying drawings, a cutter structure provided in Embodiment 1 of the present application is applied to a 3D printer, wherein the print head includes a housing, and the cutter structure includes:

[0046] The upper shell 1 is detachably connected to the shell; a cutter assembly rotatably connected to the upper shell 1 is provided on the upper shell 1, and the cutter assembly is used for cutting the consumables 20.

[0047] The above-mentioned cutter structure is provided with an upper shell detachably connected to the shell of the print head, and a cutter assembly for cutting consumables is arranged on the upper shell and rotatably connected to the upper shell, so as to form a cutter structure that can be modularly detached, thereby realizing modular arrangement of the cutter structure on the print head. By opening the upper shell of the cutter structure, it is convenient to individually detach and detect the cutter structure and to replace the material in linkage with the whole machine;

[0048] It should be noted that the detachable connection method or structure between the upper shell and the print head is not limited, for example, the detachable connection between the upper shell and the print head may be achieved by screws and nuts, by screws and internal threads, by embedding the upper shell in the print head, or by snapping the upper shell and the print head together;

[0049] The print head in the prior art integrates functional modules such as material cutting and material extrusion, which results in the cutter structure in the print head being unable to be modularly disassembled. By providing an upper shell detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, making it convenient to disassemble and detect the cutter structure separately and to replace the material of the whole machine in a linked manner; the convenience of detecting, repairing or replacing the cutter structure is improved, and the overall modular design of the cutter structure makes it more convenient to replace and assemble and easy to disassemble.

[0050] In an optional manner in the embodiment of the utility model, the cutter structure further includes a lower shell 2, the upper shell 1 and the lower shell 2 are detachably connected, and a channel for allowing the consumables 20 to pass through is provided between the upper shell 1 and the lower shell 2.

[0051] When the cutter structure includes a detachably connected upper shell and a lower shell, when it is necessary to inspect, repair or replace the cutter assembly in the cutter structure or other parts arranged in the cutter structure, the upper shell and the lower shell of the cutter structure removed from the print head can be opened for inspection, repair or replacement, thereby improving the convenience of inspecting, repairing or replacing the cutter structure; or when the cutter structure is not removed from the print head, the upper shell of the cutter structure can be directly opened to inspect, repair or replace the cutter assembly in the cutter structure or other parts arranged in the fixed shell, thereby improving the convenience of inspecting, repairing or replacing the cutter structure; the overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble;

[0052] It should be noted that the manner or structure of the detachable connection between the upper shell and the lower shell is not limited, and the detachable connection between the upper shell and the lower shell may be achieved by screws and nuts, by screws and internal threads, by embedding the upper shell into the lower shell or the lower shell into the upper shell, or by snapping the upper shell and the lower shell together;

[0053] By providing a detachably connected upper shell and lower shell, the upper shell or lower shell of the cutter assembly can be directly opened for inspection, maintenance or replacement, thereby improving the convenience of inspection, maintenance or replacement of the cutter structure.

[0054] In an optional manner in the embodiment of the utility model, the lower shell 2 is integrally formed with the shell, or the lower shell 2 is detachably connected to the shell; in actual application, the lower shell 2 can be detachably connected to the shell.

[0055] In an optional manner in the embodiment of the utility model, if the lower shell 2 is detachably connected to the shell, the lower shell 2 is provided with a first connecting hole 3, and the first connecting hole 3 realizes the detachable connection between the lower shell 2 and the shell through a fastener;

[0056] The shell includes a front shell and a rear shell, and a receiving space is included between the front shell and the rear shell. The upper shell 1 and the lower shell 2 are located in the receiving space. The lower shell 2 is detachably connected to the rear shell, and the rear shell is used to connect to the 3D printer.

[0057] It should be noted that the fastener can be a threaded fastener, a snap-on fastener or other fasteners, and the fastener can realize the detachable connection between the lower shell 2 and the shell through the first connecting hole 3 and the connecting hole corresponding to the shell; in practical applications, for example, the fastener is a threaded fastener, when the fastener passes through the first connecting hole 3 and the connecting hole corresponding to the shell in sequence, the connecting hole corresponding to the shell is provided with an internal thread corresponding to the fastener, so as to realize the connection between the fastener and the first connecting hole 3 and the connecting hole corresponding to the shell, realize the detachable connection between the lower shell 2 and the shell, and realize the fixation. The shell is detachably connected to the shell; or, the first connecting hole 3 and the connecting hole corresponding to the shell are both provided with internal threads corresponding to the fastener, so as to realize the connection between the fastener and the first connecting hole 3, and the connecting hole corresponding to the shell, thereby realizing the detachable connection between the lower shell 2 and the shell, thereby realizing the detachable connection between the fixed shell and the shell; in practical applications, for example, the fastener is a snap-on fastener, the fastener passes through the first connecting hole 3 and the connecting hole corresponding to the shell, and the detachable connection between the lower shell 2 and the shell is realized by snapping the snap-on block of the snap-on fastener, thereby realizing the detachable connection between the fixed shell and the shell.

[0058] In an optional manner in the embodiment of the utility model, the upper shell 1 is provided with at least two second connection holes 4, the lower shell 2 is provided with at least two third connection holes 5 corresponding to the second connection holes 4, and the at least two second connection holes 4 and the at least two third connection holes 5 are connected to the upper shell 1 and the lower shell 2 in a detachable manner through fasteners; or,

[0059] At least two second connection holes 4 and at least two third connection holes 5 realize detachable connection of the upper shell 1, the lower shell 2 and the shell through fasteners;

[0060] It should be noted that the fastener can be a threaded fastener, or a snap-on fastener or other fasteners. When at least two second connecting holes 4 and at least two third connecting holes 5 realize the detachable connection between the upper shell 1 and the lower shell 2 through the fastener, the fastener can realize the detachable connection between the upper shell 1 and the lower shell 2 through the second connecting holes 4 and the third connecting holes 5; in practical applications, for example, the fastener is a threaded fastener, when the fastener passes through the second connecting hole 4 and the third connecting hole 5 in sequence, the third connecting hole 5 is provided with an internal thread corresponding to the fastener, so as to realize the connection between the fastener and the second connecting hole 4 and the third connecting hole 5, thereby realizing the detachable connection between the upper shell 1 and the lower shell 2; or, the second connecting hole 4 and the third connecting hole 5 are both provided with an internal thread corresponding to the fastener, so as to realize the connection between the fastener and the second connecting hole 4 and the third connecting hole 5, thereby realizing the detachable connection between the upper shell 1 and the lower shell 2. ; It should be noted that, when the fastener passes through the third connecting hole 5 and the second connecting hole 4 in sequence, the internal thread corresponding to the fastener can be set in the second connecting hole 4, or the internal thread can be set in the second connecting hole 4 and the third connecting hole 5; in practical applications, for example, the fastener is a clamping fastener, the fastener passes through the second connecting hole 4 and the third connecting hole 5, and the detachable connection between the upper shell 1 and the lower shell 2 is achieved by clamping the clamping block of the clamping fastener; it should also be noted that when at least two second connecting holes 4 and at least two third connecting holes 5 are used by fasteners to achieve the detachable connection between the upper shell 1 and the lower shell 2, the lower shell 2 is provided with at least two first connecting holes 3 to achieve the detachable connection with the shell; it should also be noted that when the number of the second connecting holes 4 is two, the second connecting holes 4 are relatively arranged on both sides of the upper shell 1; when the number of the second connecting holes 4 is three, the second connecting holes 4 are arranged on the corners of the upper shell 1;

[0061] When at least two second connection holes 4 and at least two third connection holes 5 realize the detachable connection of the upper shell 1, the lower shell 2 and the shell through fasteners, the fasteners can realize the detachable connection of the upper shell 1, the lower shell 2 and the shell through the second connection holes 4 and the third connection holes 5; in practical applications, for example, the fasteners are threaded fasteners, when the fasteners pass through the second connection holes 4 and the third connection holes 5 and the corresponding connection holes on the shell in sequence, the connection holes on the shell are provided with internal threads corresponding to the fasteners, so as to realize the connection between the fasteners and the second connection holes 4, the third connection holes 5 and the connection holes on the shell, thereby realizing the detachable connection of the upper shell 1, the lower shell 2 and the shell; or, the third connection holes 5 and the corresponding connection holes on the shell are all provided with internal threads corresponding to the fasteners, so that the fasteners are connected to the second connection holes 4, the third connection holes 5, and the connection holes on the shell, thereby realizing the detachable connection of the upper shell 1, the lower shell 2, and the shell; or, the second connection holes 4 and the corresponding connection holes on the shell are all provided with internal threads corresponding to the fasteners, so that the fasteners are connected to the second connection holes 4, the third connection holes 5, and the connection holes on the shell, thereby realizing the detachable connection of the upper shell 1, the lower shell 2, and the shell; or, the second connection holes 4, the third connection holes 5, and the corresponding connection holes on the shell are all provided with internal threads corresponding to the fasteners, so that the fasteners are connected to the second connection holes 4, the third connection holes 5, and the connection holes on the shell, thereby realizing the detachable connection of the upper shell 1, the lower shell 2, and the shell. 5, and the connection holes on the shell, so as to realize the detachable connection between the upper shell 1, the lower shell 2 and the shell; it should be noted that when the fastener passes through the third connection hole 5, the second connection hole 4 and the corresponding connection hole on the shell in sequence, the internal thread corresponding to the fastener can be set in the corresponding connection hole on the shell, or the internal thread can be set in the second connection hole 4 and the corresponding connection hole on the shell, or the internal thread can be set in the third connection hole 5 and the corresponding connection hole on the shell, or the internal thread can be set in the second connection hole 4, the third connection hole 5 and the corresponding connection hole on the shell; in actual applications, for example, the fastener is a clamping fastener, the fastener passes through the second connection hole 4, the third connection hole 5 and the corresponding connecting holes on the shell, the upper shell 1, the lower shell 2 and the shell are detachably connected by means of the connecting block of the connecting fastener; it should also be noted that when at least two second connecting holes 4 and at least two third connecting holes 5 realize the detachable connection of the upper shell 1, the lower shell 2 and the shell through fasteners, the lower shell 2 is provided with at least one first connecting hole 3, which together with the second connecting hole 4 and the third connecting hole 5 realizes the detachable connection with the shell; it should also be noted that when the number of the second connecting holes 4 is two, the second connecting holes 4 are relatively arranged on both sides of the upper shell 1; when the number of the second connecting holes 4 is three, the second connecting holes 4 are arranged on the corners of the upper shell 1.

[0062] In an optional manner in the embodiment of the utility model, an accommodating chamber is further included between the upper shell 1 and the lower shell 2, the accommodating chamber is communicated with the passage, a first rotating hole 6 is opened on the upper shell 1, the cutter assembly is rotatably connected to the first rotating hole 6 via a rotating shaft 11, and the cutter assembly is at least partially placed inside the accommodating chamber; the cutter assembly rotates around the rotating shaft 11 to achieve the movement of the cutter assembly in the accommodating chamber to block the passage or move away from the passage;

[0063] It should be noted that the rotating shaft 11 can be independently arranged outside the upper shell 1 and the cutter assembly, or can be arranged on the first rotating hole 6 of the upper shell 1 or the cutter assembly. The cutter assembly can block the passage or move away from the passage in the accommodating cavity through the rotating shaft 11, and the cutter assembly can be connected to the upper shell 1 through the rotating shaft 11 and the first rotating hole 6. In practical applications, since the upper shell 1 and the lower shell 2 are detachably connected, when the cutter assembly needs to be inspected, adjusted, repaired or replaced, it can be achieved by disassembling the upper shell 1 and the lower shell 2. The cutter assembly blocks the passage in the accommodating cavity, so that the cutter assembly cuts the consumables 20 in the passage.

[0064] The cutter assembly includes a fixedly connected cutter piece 8 and a rotating arm 9. A second rotating hole 7 is provided at the connection between the cutter piece 8 and the rotating arm 9, and the second rotating hole 7 is rotatably connected to the first rotating hole 6 by a rotating shaft 11. It should be noted that the second rotating hole 7 is provided at the connection between the cutter piece 8 and the rotating arm 9, i.e., in the middle of the cutter assembly. The rotating shaft 11 rotates the second connecting hole 4 and the first connecting hole 3. When the cutter piece 8 needs to be moved to cut the consumables 20 in the channel or the cutter piece 8 needs to be moved away from the channel, the second rotating hole 7 in the middle of the cutter assembly is used as the support point, and the rotating arm 9 needs to move a smaller range, which can reduce the space occupied by the cutter assembly when working, thereby reducing the volume of the cutter structure. At the same time, the small range of movement of the rotating arm 9 can also better realize the control of the cutter assembly. In actual applications, the fixed part of the print head touches the rotating arm 9 of the cutter assembly, thereby causing the cutter assembly to move mechanically.

[0065] In an optional manner in the embodiment of the utility model, the upper shell 1 is provided with a first connecting end, the rotating arm 9 is provided with a second connecting end, and the cutter structure also includes an elastic member 12, the first connecting end and the second connecting end are respectively connected to the two ends of the elastic member 12, and when the cutter assembly blocks the consumables 20 in the channel, the elastic member 12 is used to give the cutter assembly a force away from the consumables 20; it should be noted that the connection method between the two ends of the elastic member 12 and the first connecting end or the second connecting end can be a fixed connection method, such as welding, or a detachable connection method, such as snap-on, sleeve connection, etc.; in actual application, when the cutter assembly is away from the channel, the elastic member 12 is in a natural state, and when the cutter assembly blocks the channel, the elastic member 12 is in a stretched state, and the cutter assembly is reset under the elastic force of the elastic member 12; in actual application, the elastic member 12 can be a spring or other telescopic member with a rebound force.

[0066] In an optional manner in the embodiment of the utility model, a photoelectric detection module 13 is further provided on the upper shell 1 or the lower shell 2, and the photoelectric detection module 13 is used to detect whether the cutter member 8 blocks the channel; it should be noted that blocking the channel includes blocking the entire channel or blocking part of the channel, that is, preventing the wire / consumables from passing normally.

[0067] The photoelectric detection module 13 includes a base, and a light emitting end and a receiving end arranged on the base; the receiving end is used to receive the light signal emitted by the light emitting end. When the cutter component 8 blocks the channel, the cutter component blocks the receiving end from receiving the light signal emitted by the light emitting end; when the cutter component 8 does not block the channel, the receiving end can receive the light signal emitted by the light emitting end; in actual application, the photoelectric detection module 13 can detect whether the cutter component moves into the channel, and then detect whether the cutter component cuts the consumables 20 in the channel; when the cutter component blocks the receiving end from receiving the light signal emitted by the light emitting end, the photoelectric module signal changes;

[0068] The rotating arm 9 is provided with a shielding portion 10. When the cutter member 8 blocks the channel, the shielding portion 10 blocks the receiving end from receiving the optical signal emitted by the light emitting end; when the cutter member 8 does not block the channel, the receiving end can receive the optical signal emitted by the light emitting end; it should be noted that blocking the channel includes blocking the entire channel or blocking part of the channel, that is, preventing the wire / consumables from passing normally;

[0069] In practical applications, the shielding portion 10 is provided to block the receiving end from receiving the light signal emitted by the light emitting end, thereby improving the detection effect of the photoelectric detection module 13;

[0070] The upper shell 1 and the lower shell 2 are respectively provided with slots corresponding to the base, and the base is snapped into the slots of the upper shell 1 and the lower shell 2; in actual application, the photoelectric detection module 13 is detachable by fixing the slots of the detachably connected upper shell 1 and the lower shell 2;

[0071] =The interior of the rotating arm 9 is hollowed out, and reinforcing ribs are provided inside the rotating arm 9, and the reinforcing ribs are provided along the rotating direction of the rotating arm 9; in actual application, the interior of the rotating arm 9 is hollowed out and provided with reinforcing ribs, which can reduce the material and weight of the rotating arm 9 while ensuring the strength of use.

[0072] A print head provided in embodiment 2 of the present application includes a shell and the cutter structure in embodiment 1; the print head also includes an extrusion structure, which is used to clamp and extrude the consumable material 20, and the extrusion structure includes a third shell, a first rotating member and a second rotating member, the first rotating member and the second rotating member are arranged between the third shell and the lower shell 2, the first rotating member and the second rotating member are relatively arranged on both sides of the channel, and the first rotating member and the second rotating member are used to clamp and extrude the consumable material 20.

[0073] By providing a fixed shell detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, which facilitates the detachable and detectable cutter structure and the linkage replacement of the whole machine; the convenience of detecting, repairing or replacing the cutter structure is improved, and the overall modular design of the cutter structure is more convenient for replacement and assembly and easy to disassemble; by providing a detachably connected upper shell 1 and lower shell 2, the upper shell 1 or lower shell 2 of the fixed shell can be directly opened for detection, repair or replacement, which improves the convenience of detecting, repairing or replacing the cutter structure; thereby improving the use efficiency of the print head.

[0074] A 3D printer provided in the third embodiment of the present application includes the cutter structure in the first embodiment, or the print head in the second embodiment;

[0075] By providing a fixed shell detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, which facilitates the detachable and detectable cutter structure and the linkage material replacement of the whole machine; the convenience of detecting, repairing or replacing the cutter structure is improved, and the overall modular design of the cutter structure is more convenient for replacement and assembly and easy to disassemble; by providing a detachably connected upper shell 1 and lower shell 2, the upper shell 1 or the lower shell 2 of the fixed shell can be directly opened for detection, repair or replacement, which improves the convenience of detecting, repairing or replacing the cutter structure, thereby improving the use efficiency of the 3D printer.

[0076] On the one hand, as shown in the figure, reference numeral 1, the embodiment of the present application further provides a cutter structure, which is applied to a print head, the print head includes a housing, and the cutter structure includes:

[0077] The upper shell 1 is detachably connected to the shell; a cutter assembly rotatably connected to the upper shell 1 is provided on the upper shell 1, and the cutter assembly is used for cutting the consumables 20.

[0078] Among them, reference numeral 2, based on reference numeral 1, the cutter structure further includes a lower shell 2, the upper shell 1 and the lower shell 2 are detachably connected, and a channel for allowing consumables 20 to pass through is provided between the upper shell 1 and the lower shell 2.

[0079] Among them, reference numeral 3, based on reference numeral 2, the lower shell 2 is formed integrally with the shell, or the lower shell 2 is detachably connected with the shell.

[0080] Among them, reference numeral 4, on the basis of reference numeral 3, if the lower shell 2 is detachably connected to the shell, the lower shell 2 is provided with a first connecting hole 3, and the first connecting hole 3 realizes the detachable connection between the lower shell 2 and the shell through a fastener;

[0081] The shell includes a front shell and a rear shell, and a receiving space is included between the front shell and the rear shell. The upper shell 1 and the lower shell 2 are located in the receiving space. The lower shell 2 is detachably connected to the rear shell, and the rear shell is used to connect to the 3D printer.

[0082] Among them, reference numeral 5, based on reference numeral 2, the upper shell 1 is provided with at least two second connection holes 4, the lower shell 2 is provided with at least two third connection holes 5 corresponding to the second connection holes 4, and the at least two second connection holes 4 and the at least two third connection holes 5 are connected to the upper shell 1 and the lower shell 2 in a detachable manner through fasteners; or,

[0083] At least two second connection holes 4 and at least two third connection holes 5 realize detachable connection between the upper shell 1, the lower shell 2 and the print head through fasteners.

[0084] Among them, reference numeral 6, based on reference numeral 2, further includes an accommodating chamber between the upper shell 1 and the lower shell 2, the accommodating chamber is communicated with the passage, a first rotating hole 6 is opened on the upper shell 1, the cutter assembly is rotatably connected to the first rotating hole 6 through a rotating shaft 11, and the cutter assembly is at least partially disposed inside the accommodating chamber; the cutter assembly rotates around the rotating shaft 11 to achieve the movement of the cutter assembly in the accommodating chamber to block the passage or move away from the passage;

[0085] The cutter assembly comprises a cutter member 8 and a rotating arm 9 which are fixedly connected. A second rotating hole 7 is provided at the connection between the cutter member 8 and the rotating arm 9. The second rotating hole 7 is rotationally connected to the first rotating hole 6 via a rotating shaft 11.

[0086] Among them, number 7, based on number 6, the upper shell 1 is provided with a first connecting end, the rotating arm 9 is provided with a second connecting end, the cutter structure also includes an elastic member 12, the first connecting end and the second connecting end are respectively connected to the two ends of the elastic member 12, and the elastic member 12 is used to give the cutter assembly a force away from the material 20.

[0087] Among them, reference numeral 8, based on reference numeral 6, a photoelectric detection module 13 is further provided on the upper shell 1 or the lower shell 2 for detecting whether the cutting member 8 blocks the channel;

[0088] The photoelectric detection module 13 includes a base, and a light emitting end and a receiving end arranged on the base; the receiving end is used to receive the light signal emitted by the light emitting end. When the cutter member 8 blocks the channel, the cutter assembly blocks the receiving end from receiving the light signal emitted by the light emitting end; when the cutter member 8 does not block the channel, the receiving end can receive the light signal emitted by the light emitting end.

[0089] A shielding portion 10 is provided on the rotating arm 9. When the cutter member 8 blocks the passage, the shielding portion 10 blocks the receiving end from receiving the light signal emitted by the light emitting end.

[0090] The upper shell 1 and the lower shell 2 are respectively provided with slots corresponding to the base, and the base is snapped into the slots of the upper shell 1 and the lower shell 2;

[0091] The interior of the rotating arm 9 is hollowed out, and a reinforcing rib is provided inside the rotating arm 9 . The reinforcing rib is arranged along the rotating direction of the rotating arm 9 .

[0092] On the other hand, reference numeral 9, an embodiment of the present application further provides a print head, comprising a housing, and a cutter structure of any one of reference numerals 2 to 10;

[0093] The print head also includes an extrusion structure, which is used to clamp and extrude the consumable material 20. The extrusion structure includes a third shell, a first rotating member and a second rotating member. The first rotating member and the second rotating member are arranged between the third shell and the lower shell 2. The first rotating member and the second rotating member are relatively arranged on both sides of the channel. The first rotating member and the second rotating member are used to clamp and extrude the consumable material 20.

[0094] On the other hand, reference numeral 10, an embodiment of the present application further provides a 3D printer, comprising any cutter structure of reference numerals 1 to 8, or a print head of reference numeral 9.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A cutter structure, applied to a print head, the print head comprising a housing, characterized in that: The cutter structure comprises: An upper shell is detachably connected to the shell; a cutter assembly rotatably connected to the upper shell is provided on the upper shell, and the cutter assembly is used for cutting consumables.

2. The cutter structure according to claim 1, characterized in that: The cutter structure also includes a lower shell, the upper shell is detachably connected to the lower shell, and a channel for allowing consumables to pass through is provided between the upper shell and the lower shell.

3. The cutter structure according to claim 2, characterized in that: The lower shell is integrally formed with the shell, or the lower shell is detachably connected to the shell.

4. The cutter structure according to claim 3, characterized in that: If the lower shell is detachably connected to the shell, the lower shell is provided with a first connecting hole, and the first connecting hole realizes the detachable connection between the lower shell and the shell through a fastener; The shell comprises a front shell and a rear shell, a receiving space is comprised between the front shell and the rear shell, the upper shell and the lower shell are located in the receiving space, the lower shell is detachably connected to the rear shell, and the rear shell is used to be connected to a 3D printer.

5. The cutter structure according to claim 2, characterized in that: The upper shell is provided with at least two second connection holes, and the lower shell is provided with at least two third connection holes corresponding to the second connection holes, and at least two of the second connection holes and at least two of the third connection holes are connected to the upper shell and the lower shell in a detachable manner through fasteners; or, At least two of the second connection holes and at least two of the third connection holes realize the detachable connection of the upper shell, the lower shell and the shell through fasteners.

6. The cutter structure according to claim 2, characterized in that: A receiving chamber is further included between the upper shell and the lower shell, the receiving chamber is communicated with the passage, a first rotating hole is opened on the upper shell, the cutter assembly is rotatably connected to the first rotating hole via a rotating shaft, and the cutter assembly is at least partially disposed inside the receiving chamber; the cutter assembly rotates around the rotating shaft to achieve movement of the cutter assembly in the receiving chamber to block the passage or move away from the passage; The cutter assembly comprises a cutter piece and a rotating arm which are fixedly connected. A second rotating hole is provided at the connection between the cutter piece and the rotating arm. The second rotating hole is rotationally connected to the first rotating hole via a rotating shaft.

7. The cutter structure according to claim 6, characterized in that: The upper shell is provided with a first connecting end, the rotating arm is provided with a second connecting end, and the cutter structure also includes an elastic member, the first connecting end and the second connecting end are respectively connected to two ends of the elastic member, and the elastic member is used to apply force to the cutter assembly away from the consumables.

8. The cutter structure according to claim 6, characterized in that: The upper shell or the lower shell is also provided with a photoelectric detection module, and the photoelectric detection module is used to detect whether the cutting piece blocks the channel; The photoelectric detection module includes a base, and a light emitting end and a receiving end arranged on the base; the receiving end is used to receive the light signal emitted by the light emitting end, and when the cutter component blocks the channel, the cutter component blocks the receiving end from receiving the light signal emitted by the light emitting end; when the cutter component does not block the channel, the receiving end can receive the light signal emitted by the light emitting end; The rotating arm is provided with a shielding part, and when the cutting blade blocks the channel, the shielding part blocks the receiving end from receiving the light signal emitted by the light emitting end; The upper shell and the lower shell are respectively provided with slots corresponding to the base, and the base is snapped into the slots of the upper shell and the lower shell; The interior of the rotating arm is hollowed out, and reinforcing ribs are arranged inside the rotating arm. The reinforcing ribs are arranged along the rotating direction of the rotating arm.

9. A print head, characterized in that: It comprises a housing, and a cutter structure as claimed in any one of claims 2 to 8; The print head also includes an extrusion structure, which is used to clamp and extrude consumables. The extrusion structure includes a third shell, a first rotating member and a second rotating member. The first rotating member and the second rotating member are arranged between the third shell and the lower shell. The first rotating member and the second rotating member are relatively arranged on both sides of the channel. The first rotating member and the second rotating member are used to clamp and extrude consumables.

10. A 3D printer, characterized in that: The invention comprises the cutter structure according to any one of claims 1 to 8, or the print head according to claim 9.

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