Extrusion structure, printing head and 3D printer

Abstract

The utility model discloses an extrusion structure, which is characterized in that a fixing shell detachably connected with a printing head is arranged, and an extrusion assembly is arranged in the fixing shell to form an extrusion structure capable of being modularly detached, so that the extrusion structure is modularly arranged on the printing head, and the extrusion structure can be conveniently and independently detected, maintained or replaced; and the convenience of detection, maintenance or replacement of the extrusion structure is improved, so that the use efficiency of the 3D printer is improved. According to the main technical scheme, the extrusion structure is applied to the printing head, the printing head comprises a shell, and the extrusion structure comprises a fixing shell used for being detachably connected with the shell; an extrusion assembly is at least arranged in the fixed shell, and the extrusion assembly is used for driving consumables entering the extrusion structure to move; the fixing shell comprises a first shell body and a second shell body which are detachably connected.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to an extrusion 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 inability to realize modular disassembly of the extrusion structure in the 3D print head. When the extrusion structure is damaged and needs to be replaced, the entire 3D print head needs to be replaced. This brings inconvenience to the inspection, maintenance, and replacement of the separate extrusion structure, and fails 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 an extrusion structure, a print head and a 3D printer.

[0005] In a first aspect, the present application provides an extrusion structure applied to a print head, wherein the print head comprises a housing, and the extrusion structure comprises:

[0006] A fixed shell, used for being detachably connected to the housing; at least an extrusion assembly is provided in the fixed shell, and the extrusion assembly is used for driving the consumable (10) entering the extrusion structure to move;

[0007] The fixed shell comprises a first shell (1) and a second shell (2) which are detachably connected.

[0008] In one embodiment, the extrusion assembly includes a fixed rotating member, an adjustable rotating member arranged opposite to the fixed rotating member, and a pressure regulating module for adjusting the relative position of the fixed rotating member and the adjustable rotating member.

[0009] In one embodiment, the first shell is provided with at least two first connection holes, the second shell is provided with at least two second connection holes corresponding to the first connection holes, and the at least two first connection holes and the at least two second connection holes are connected to each other detachably through fasteners; or,

[0010] At least two of the first connection holes and at least two of the second connection holes realize detachable connection between the first shell, the second shell and the print head through fasteners.

[0011] In one embodiment, the pressure regulating module comprises an elastic member, a nut and an adjusting screw passing through the nut, wherein one end of the elastic member abuts against the adjustable rotating member, and the other end abuts against the nut;

[0012] The adjusting screw is rotated to tighten or loosen the nut on the elastic member; or,

[0013] The pressure regulating module comprises an elastic member, a nut and an adjusting screw, one end of the elastic member abuts against the adjustable rotating member, and the adjusting screw passes through the nut and abuts against the other end of the elastic member;

[0014] An accommodating space is formed between the first shell and the second shell, the nut is clamped and fixed in the accommodating space, and the adjusting screw can tighten or loosen the elastic member by rotating.

[0015] In one embodiment, the adjustable rotating member includes an adjusting arm, a movable shell and a rotating member rotatably connected to the movable shell, one end of the adjusting arm is fixedly connected to the movable shell, and the other end is rotatably connected to the fixed shell, the movable shell abuts against one end of the elastic member, and the rotating member is arranged opposite to the fixed rotating member.

[0016] In one of the embodiments, the extrusion structure further includes an incoming material detection structure disposed in the fixed shell, for detecting whether the consumable material entering the extrusion structure is interrupted;

[0017] The incoming material detection structure includes a photoelectric module, an incoming material shifting block, and a shifting block elastic member connected to the incoming material shifting block. The position of the incoming material shifting block includes a first position and a second position. In the first position, at least a portion of the incoming material shifting block is located on the consumable material moving path. In the second position, the incoming material shifting block triggers the photoelectric module. The shifting block elastic member is used to apply force to the incoming material shifting block from the second position to the first position.

[0018] In one embodiment, the photoelectric 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 consumables continue to enter the extrusion structure, the consumables continue to push the incoming material block to block the receiving end from receiving the light signal emitted by the light emitting end; the first shell and the second shell are respectively provided with card slots corresponding to the base, and the base is carded in the card slots of the first shell and the second shell.

[0019] In one embodiment, the housing is provided with a consumables channel, and the fixed rotating member and the adjustable rotating member are arranged opposite to each other at two sides of the consumables channel;

[0020] The incoming material detection structure is arranged at the entrance of the consumable channel, and is used to detect whether the consumable entering the extrusion structure is broken or blocked.

[0021] In one embodiment, the shell includes a front shell and a rear shell, and a receiving space is included between the front shell and the rear shell. At least part of the extrusion structure is located in the receiving space. The first shell and the rear shell are detachably connected, and the rear shell is used to connect to a 3D printer.

[0022] In a second aspect, the present application also provides a print head, comprising a housing and the above-mentioned extrusion structure;

[0023] The print head also includes a cutter structure, which is used for cutting consumables in the print head.

[0024] In a third aspect, the present application also provides a 3D printer, comprising the above-mentioned extrusion structure or the above-mentioned print head.

[0025] The beneficial effects of the utility model are:

[0026] The above-mentioned extrusion structure, by providing a fixed shell detachably connected to the print head, arranges the extrusion component in the fixed shell, and forms an extrusion structure that can be modularly disassembled, thereby realizing modular arrangement of the extrusion structure on the print head, which is convenient for individually detecting, repairing or replacing the extrusion structure; the fixed shell includes a first shell and a second shell that are detachably connected, and when it is necessary to detect, repair or replace the parts of the extrusion component in the extrusion structure or other parts arranged in the fixed shell, the first shell or the second shell of the fixed shell removed from the print head can be opened for detection, repair or replacement, thereby improving the convenience of detecting, repairing or replacing the extrusion structure, or when the fixed shell is not removed from the print head, the first shell or the second shell of the fixed shell can be directly opened to realize the detection, repair or replacement of the parts of the extrusion component in the extrusion structure or other parts arranged in the fixed shell, thereby improving the convenience of detecting, repairing or replacing the extrusion structure, and the overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble;

[0027] It should be noted that the detachable connection between the fixed shell and the print head may be achieved through screws and nuts, through screws and internal threads, through embedding the fixed shell into the print head, or by snapping the fixed shell into the print head; the detachable connection between the first shell and the second shell may be achieved through screws and nuts, through screws and internal threads, through embedding the first shell into the second shell or the second shell into the first shell, or by snapping the first shell into the second shell.

[0028] The print head in the prior art integrates functional modules such as material cutting and material extrusion, resulting in the inability to achieve modular disassembly of the extrusion structure in the print head. By providing a fixed shell detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, thereby improving the convenience of detecting, repairing or replacing the extrusion structure. The overall modular design of the extrusion structure is more convenient for replacement and assembly and is easy to disassemble. By providing a first shell and a second shell detachably connected, the first shell or the second shell of the fixed shell can be directly opened for inspection, repair or replacement, thereby improving the convenience of detecting, repair or replacement of the extrusion structure.

[0029] 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

[0030] Figure 1 This is a schematic diagram of the assembly structure of the extrusion structure in the first embodiment of the present invention;

[0031] Figure 2 An exploded view of the extrusion structure in Embodiment 1 of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the connection between the extrusion structure and the rear shell of the print head in the first embodiment of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the extrusion structure elastic member in the first embodiment of the present invention detecting that there is no incoming material;

[0034] Figure 5It is a structural schematic diagram of the extrusion structure elastic member in the first embodiment of the present invention detecting the incoming material situation;

[0035] Figure 6 Schematic diagram of extrusion force adjustment of the extrusion structure in Embodiment 1 of the present invention.

[0036] Reference numerals:

[0037] 1. First shell; 2. Second shell; 11. First connecting hole; 22. Second connecting hole; 3. Photoelectric module; 4. Incoming material shifting block; 5. Shifting block elastic member; 6. Adjusting screw; 61. Nut; 7. Elastic member; 8. Adjustable rotating member; 9. Fixed rotating member; 10. Consumables; 100. Back shell. DETAILED DESCRIPTION

[0038] The optional embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the optional 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.

[0039] 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.

[0040] 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.

[0041] Unless otherwise specified, the methods and equipment used in the present invention are all conventional reagents, methods and equipment in the technical field.

[0042] In order to facilitate the understanding of the embodiments of the utility model, the extrusion structure in the related art is first described. The print head in the prior art integrates functional modules such as material cutting and material extrusion, resulting in the inability to realize modular disassembly of the extrusion structure in the print head. When the extrusion 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 extrusion structure; at the same time, in the existing extrusion structure, the size of the extrusion force cannot be adjusted, and the structure for detecting printing consumables is complex and fails to meet the use requirements. Based on this, the present application provides an extrusion structure.

[0043] As shown in the accompanying drawings, an extrusion structure provided in Embodiment 1 of the present application is applied to a print head, and the print head includes a shell; the extrusion structure includes:

[0044] A fixed shell is used for detachably connecting with the housing; at least an extrusion assembly is provided in the fixed shell, and the extrusion assembly is used for driving the consumable 10 entering the extrusion structure to move;

[0045] The fixed housing includes a first housing 1 and a second housing 2 which are detachably connected.

[0046] By setting a fixed shell detachably connected to the shell of the print head, the extrusion component is set in the fixed shell to form an extrusion structure that can be modularly disassembled, so that the extrusion structure is modularly arranged on the print head, which is convenient for the extrusion structure to be disassembled, installed, inspected, repaired or replaced separately; the fixed shell includes a first shell 1 and a second shell 2 that are detachably connected. When the extrusion mechanism needs to be disassembled, the fixed shell and the extrusion component in the fixed shell can be directly removed from the shell. When it is necessary to inspect, repair or replace the parts of the extrusion component in the extrusion structure or other parts arranged in the fixed shell, the first shell 1 or the second shell 2 of the fixed shell removed from the print head can be opened for inspection, repair or replacement, thereby improving the convenience of inspecting, repairing or replacing the extrusion structure. Alternatively, when the fixed shell is not removed from the print head, the first shell 1 or the second shell 2 of the fixed shell can be directly opened to inspect, repair or replace the parts of the extrusion component in the extrusion structure or other parts arranged in the fixed shell, thereby improving the convenience of inspecting, repairing or replacing the extrusion structure. The overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble.

[0047] It should be noted that the manner or structure of the detachable connection between the fixed shell and the print head is not limited, such as the detachable connection between the fixed shell and the print head can be achieved through screws and nuts 61, the detachable connection between the fixed shell and the print head can be achieved through screws and internal threads, the detachable connection between the fixed shell and the print head can be achieved by embedding the fixed shell into the print head, or the detachable connection between the fixed shell and the print head can be achieved by snapping the fixed shell and the print head; the manner or structure of the detachable connection between the first shell 1 and the second shell 2 is not limited, such as the detachable connection between the first shell 1 and the second shell 2 can be achieved through screws and nuts 61, the detachable connection between the first shell 1 and the second shell 2 can be achieved through screws and internal threads, the detachable connection between the first shell 1 and the second shell 2 can be achieved by embedding the first shell 1 into the second shell 2 or the second shell 2 into the first shell 1, or the detachable connection between the first shell 1 and the second shell 2 can be achieved by snapping the first shell 1 and the second shell 2; it should also be noted that part of the structure of the extrusion assembly can be exposed to the fixed shell of the extrusion structure, or can be exposed to the shell of the print head.

[0048] In actual applications, by setting a detachable connection between the fixed shell and the print head, modular disassembly of the extrusion structure and the print head is realized, thereby improving the convenience of detecting, repairing or replacing the extrusion structure. The overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble. By setting a detachably connected first shell 1 and second shell 2, the internal inspection, repair or replacement can be carried out by directly opening the first shell 1 or the second shell 2 of the fixed shell, thereby improving the convenience of detecting, repairing or replacing the extrusion structure.

[0049] In an optional manner in an embodiment of the utility model, the extrusion assembly includes a fixed rotating member 9, an adjustable rotating member 8 arranged opposite to the fixed rotating member 9, and a pressure regulating module for adjusting the relative position of the fixed rotating member 9 and the adjustable rotating member 8.

[0050] By setting a fixed shell detachably connected to the print head, a fixed rotating member 9, an adjustable rotating member 8 arranged opposite to the fixed rotating member 9, and a pressure regulating module for adjusting the relative position of the fixed rotating member 9 and the adjustable rotating member 8 are arranged in the fixed shell, so as to form an extrusion structure that can be modularly detached, thereby realizing modular arrangement of the extrusion structure on the print head, which is convenient for testing, repairing or replacing the extrusion structure separately; the fixed shell includes a first shell 1 and a second shell 2 that are detachably connected. When it is necessary to detach the fixed rotating member 9, the adjustable rotating member 8, the pressure regulating module or other parts arranged in the fixed shell in the extrusion structure, When performing inspection, repair or replacement, the first shell 1 or the second shell 2 of the fixed shell removed from the print head can be opened for inspection, repair or replacement, thereby improving the convenience of inspecting, repairing or replacing the extrusion structure; or when the fixed shell is not removed from the print head, the first shell 1 or the second shell 2 of the fixed shell can be directly opened to inspect, repair or replace the fixed rotating part 9, the adjustable rotating part 8, the pressure regulating module or other parts arranged in the fixed shell in the extrusion structure, thereby improving the convenience of inspecting, repairing or replacing the extrusion structure; the overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble.

[0051] In an optional manner in the embodiment of the utility model, the first shell 1 is provided with at least two first connection holes 11, and the second shell 2 is provided with at least two second connection holes 22 corresponding to the first connection holes 11, and the at least two first connection holes 11 and the at least two second connection holes 22 are connected to each other by fasteners to realize the detachable connection between the first shell 1 and the second shell 2; or,

[0052] At least two first connection holes 11 and at least two second connection holes 22 realize detachable connection between the first housing 1, the second housing 2 and the print head through fasteners;

[0053] It should be noted that the fastener can be a threaded fastener, or a snap-on fastener or other fasteners. When at least two first connecting holes 11 and at least two second connecting holes 22 realize the detachable connection between the first shell 1 and the second shell 2 through the fastener, the fastener can realize the detachable connection between the first shell 1 and the second shell 2 through the first connecting hole 11 and the second connecting hole 22; in practical applications, for example, the fastener is a threaded fastener, when the fastener passes through the first connecting hole 11 and the second connecting hole 22 in sequence, the second connecting hole 22 is provided with an internal thread corresponding to the fastener, so as to realize the connection between the fastener and the first connecting hole 11 and the second connecting hole 22, thereby realizing the detachable connection between the first shell 1 and the second shell 2; or, both the first connecting hole 11 and the second connecting hole 22 are provided with an internal thread corresponding to the fastener, so as to realize the fastening The fastener is connected with the first connecting hole 11 and the second connecting hole 22, so as to realize the detachable connection between the first shell 1 and the second shell 2; it should be noted that when the fastener passes through the second connecting hole 22 and the first connecting hole 11 in sequence, the internal thread corresponding to the fastener can be set in the first connecting hole 11, or the internal thread can be set in the first connecting hole 11 and the second connecting hole 22; in practical applications, for example, the fastener is a clamping fastener, the fastener passes through the first connecting hole 11 and the second connecting hole 22, and the detachable connection between the first shell 1 and the second shell 2 is realized by clamping the clamping block of the clamping fastener; it should also be noted that when the number of the first connecting holes 11 is two, the first connecting holes 11 are relatively arranged on both sides of the first shell 1; when the number of the first connecting holes 11 is three, the first connecting holes 11 are arranged on the corners of the first shell 1;

[0054] When at least two first connection holes 11 and at least two second connection holes 22 realize the detachable connection of the first shell 1, the second shell 2 and the print head through fasteners, the fasteners can realize the detachable connection of the first shell 1, the second shell 2 and the print head through the first connection holes 11 and the second connection holes 22; in practical applications, for example, the fasteners are threaded fasteners, when the fasteners sequentially pass through the first connection holes 11 and the second connection holes 22 and the corresponding connection holes on the print head, the connection holes on the print head are provided with internal threads corresponding to the fasteners, so as to realize the connection between the fasteners and the first connection holes 11, the second connection holes 22 and the connection holes on the print head, thereby realizing the first connection holes 11 and the second connection holes 22. A detachable connection between a shell 1, a second shell 2 and a print head; or, the second connecting hole 22 and the corresponding connecting hole on the print head are both provided with internal threads corresponding to the fastener, so that the fastener is connected to the first connecting hole 11, the second connecting hole 22 and the connecting hole on the print head, thereby realizing the detachable connection between the first shell 1, the second shell 2 and the print head; or, the first connecting hole 11 and the corresponding connecting hole on the print head are both provided with internal threads corresponding to the fastener, so that the fastener is connected to the first connecting hole 11, the second connecting hole 22 and the connecting hole on the print head, thereby realizing the detachable connection between the first shell 1, the second shell 2 and the print head; or, the first The connecting hole 11, the second connecting hole 22 and the corresponding connecting hole on the print head are all provided with internal threads corresponding to the fastener, so as to realize the connection between the fastener and the first connecting hole 11, the second connecting hole 22 and the connecting hole on the print head, thereby realizing the detachable connection between the first shell 1, the second shell 2 and the print head; it should be noted that when the fastener passes through the second connecting hole 22, the first connecting hole 11 and the corresponding connecting hole on the print head in sequence, the internal thread corresponding to the fastener can be set in the corresponding connecting hole on the print head, or the internal thread can be set in the first connecting hole 11 and the corresponding connecting hole on the print head, or the internal thread can be set in the second connecting hole 22 and the print head. The corresponding connection holes on the print head, or the internal threads can be provided on the first connection hole 11, the second connection hole 22 and the corresponding connection holes on the print head; in practical applications, for example, the fastener is a clamping fastener, the fastener passes through the first connection hole 11, the second connection hole 22 and the corresponding connection hole on the print head, and the first shell 1, the second shell 2 and the print head are detachably connected by clamping the clamping block of the clamping fastener; it should also be noted that when the number of the first connection holes 11 is two, the first connection holes 11 are relatively arranged on both sides of the first shell 1; when the number of the first connection holes 11 is three, the first connection holes 11 are arranged on the corners of the first shell 1;

[0055] In an optional manner in the embodiment of the utility model, the pressure regulating module includes an elastic member 7, a nut 61 and an adjusting screw 6 passing through the nut 61, wherein one end of the elastic member 7 abuts against the adjustable rotating member 8, and the other end abuts against the nut 61;

[0056] The adjusting screw 6 is rotated to tighten or loosen the nut 61 on the elastic member 7 to adjust the pressure of the elastic member 7; or,

[0057] The pressure regulating module comprises an elastic member 7, a nut 61 and an adjusting screw 6, one end of the elastic member 7 abuts against the adjustable rotating member 8, and the adjusting screw 6 passes through the nut 61 and abuts against the other end of the elastic member 7;

[0058] An accommodation space is formed between the first housing 1 and the second housing 2, and the nut 61 is clamped and fixed in the accommodation space. The adjusting screw 6 can tighten or loosen the elastic member 7 by rotating.

[0059] It should be noted that when one end of the elastic member 7 abuts against the adjustable rotating member 8 and the other end abuts against the nut 61, the adjusting screw 6 can rotate on the side of the fixed shell without moving, that is, the fixed shell is not provided with an internal thread corresponding to the adjusting screw 6. For example, a clamping hole for the adjusting screw 6 is provided on the side of the fixed shell, so that the adjusting screw 6 is clamped on the side of the fixed shell and rotates without moving. In actual application, the nut 61 is arranged in the fixed shell, and the nut 61 in the fixed shell is moved by rotating the adjusting screw 6. Since one end of the elastic member 7 abuts against the adjustable rotating member 8 and the other end abuts against the nut 61, the movement of the nut 61 realizes the compression or loosening of the elastic member 7 abutting against the nut 61. When the nut 61 presses the elastic member 7 When pressed, the adjustable rotating part 8 abutting against the elastic part 7 will move toward the fixed rotating part 9, so that the distance between the adjustable rotating part and the fixed rotating part 9 is reduced, and the pressure of the elastic part 7 on the adjustable rotating part 8 is increased, thereby increasing the extrusion force between the adjustable rotating part and the fixed rotating part 9. When the nut 61 loosens the elastic part 7, the adjustable rotating part 8 abutting against the elastic part 7 will move away from the fixed rotating part 9, so that the distance between the adjustable rotating part and the fixed rotating part 9 is increased, and the pressure of the elastic part 7 on the adjustable rotating part 8 is reduced, thereby reducing the extrusion force between the adjustable rotating part and the fixed rotating part 9. In actual applications, the elastic part 7 can be a spring or other telescopic part with a rebound force.

[0060] It should be noted that, when one end of the elastic member 7 abuts against the adjustable rotating member 8 and the adjusting screw 6 passes through the nut 61 and abuts against the other end of the elastic member 7, the adjusting screw 6 can be clamped and fixed in the accommodating space formed between the first shell 1 and the second shell 2 without moving, that is, the nut 61 is clamped and fixed in the fixed shell. When the adjusting screw 6 is rotated, the adjusting screw 6 rotates on the internal thread of the nut 61 to achieve movement. In actual application, the nut 61 is clamped and fixed in the fixed shell. By rotating the adjusting screw 6, the adjusting screw 6 is moved relative to the nut 61. Since one end of the elastic member 7 abuts against the adjustable rotating member 8 and the other end abuts against the adjusting screw 6, the movement of the adjusting screw 6 realizes the compression or loosening of the elastic member 7 abutting against the adjusting screw 6. When the adjusting screw 6 presses the elastic member 7, the adjustable rotating member 8 abutting against the elastic member 7 will move toward the fixed rotating member 9, so that the distance between the adjustable rotating member and the fixed rotating member 9 is reduced, and the pressure of the elastic member 7 on the adjustable rotating member 8 is increased, thereby increasing the extrusion force between the adjustable rotating member and the fixed rotating member 9; when the adjusting screw 6 loosens the elastic member 7, the adjustable rotating member 8 abutting against the elastic member 7 will move away from the fixed rotating member 9, so that the distance between the adjustable rotating member and the fixed rotating member 9 is increased, and the pressure of the elastic member 7 on the adjustable rotating member 8 is reduced, thereby reducing the extrusion force between the adjustable rotating member and the fixed rotating member 9; in actual applications, the elastic member 7 can be a spring or other telescopic member with a rebound force.

[0061] In an optional manner in the embodiment of the utility model, the adjustable rotating member 8 includes an adjusting arm, a movable housing, and a rotating member rotatably connected to the movable housing, one end of the adjusting arm is fixedly connected to the movable housing, and the other end is rotatably connected to the fixed housing; the movable housing abuts against one end of the elastic member 7, and the rotating member is arranged opposite to the fixed rotating member 9;

[0062] In actual applications, the pressure regulating module or the elastic member 7 in the pressure regulating module provides pressure to the mobile shell so that the mobile shell and the rotating member on the mobile shell move toward the fixed rotating member 9, thereby adjusting the distance between the rotating member and the fixed rotating member 9. At the same time, the pressure of the pressure regulating module or the elastic member 7 in the pressure regulating module on the adjustable rotating member 8 can also be adjusted to achieve the adjustment of the extrusion force between the adjustable rotating member and the fixed rotating member 9; in actual applications, the mobile shell includes an upper surface, a lower surface, a side connected to the adjustment arm, and a side away from the fixed rotating member 9, and a rotating shaft for the rotating member to be rotatably connected is provided between the upper surface and the lower surface, wherein the side away from the fixed rotating member 9 abuts against the pressure regulating module or the elastic member 7 in the pressure regulating module.

[0063] In an optional manner in the embodiment of the utility model, the extrusion structure further includes an incoming material detection structure disposed in the fixed shell, for detecting whether the consumable material 10 entering the extrusion structure is interrupted;

[0064] The incoming material detection structure includes a photoelectric module 3, an incoming material shifting block 4 and a shifting block elastic member 5 connected to the incoming material shifting block 4. The position of the incoming material shifting block 4 includes a first position and a second position. In the first position, at least part of the incoming material shifting block 4 is located on the moving path of the consumable 10. In the second position, the incoming material shifting block 4 triggers the photoelectric module 3, and the shifting block elastic member 5 is used to give the incoming material shifting block 4 a force from the second position to the first position; in actual applications, when the consumable 10 continues to enter the extrusion structure, the consumable 10 continues to push the incoming material shifting block 4 to block the photoelectric module 3 and compress the shifting block elastic member 5. When the consumable 10 entering the extrusion structure is interrupted, the incoming material shifting block 4 is restored to its position under the action of the shifting block elastic member 7; the incoming material detection structure can detect whether the consumable 10 entering the extrusion structure is interrupted. When the incoming material shifting block 4 blocks the photoelectric module 3, the signal of the photoelectric module 3 changes; in actual applications, the shifting block elastic member 5 can be a spring or other telescopic member with a rebound force.

[0065] In an optional manner in the embodiment of the utility model, the photoelectric module 3 includes a base, and a light emitting end and a receiving end arranged on the base; the receiving end is used to receive the optical signal emitted by the light emitting end, and when the consumable 10 continues to enter the extrusion structure, the consumable 10 continues to push the incoming material block 4 to block the receiving end from receiving the optical signal emitted by the light emitting end; the first shell 1 and the second shell 2 are respectively provided with a card slot corresponding to the base, and the base is carded in the card slot of the first shell 1 and the second shell 2; when the consumable 10 entering the extrusion structure is interrupted, the receiving end can receive the optical signal emitted by the light emitting end. In actual application, the photoelectric module 3 is detachable by fixing the card slot through the detachably connected first shell 1 and the second shell 2;

[0066] In an optional manner in the embodiment of the utility model, the housing is provided with a consumables channel, and the fixed rotating member 9 and the adjustable rotating member 8 are arranged opposite to each other on both sides of the consumables channel;

[0067] The incoming material detection structure is arranged at the entrance of the consumable channel, and is used to detect whether the consumable 10 entering the extrusion structure is broken or blocked;

[0068] In actual applications, the fixed rotating parts 9 and the adjustable rotating parts 8 on both sides of the consumable channel can extrude the consumable 10; by setting the incoming material detection structure at the entrance of the consumable channel, it is easy to detect whether the consumable 10 entering the extrusion structure is broken, and the detection effect is better.

[0069] In an optional manner in an embodiment of the utility model, the shell includes a front shell and a rear shell 100, and a receiving space is included between the front shell and the rear shell 100, at least part of the extrusion structure is located in the receiving space, the first shell 1 and the rear shell 100 are detachably connected, and the rear shell 100 is used to connect to a 3D printer.

[0070] A print head provided in the second embodiment of the present application includes a housing and the extrusion structure in the first embodiment;

[0071] The print head further includes a cutter structure, which is used to cut the consumables 10 in the print head. In practical applications, the cutter structure is disposed at the outlet of the consumable channel to cut the consumables 10 at the outlet of the consumable channel.

[0072] By providing a fixed shell that is detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, which improves the convenience of detecting, repairing or replacing the extrusion structure. The overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble, thereby improving the efficiency of using the 3D printer; by providing a detachably connected first shell 1 and a second shell 2, the first shell 1 or the second shell 2 of the fixed shell can be directly opened for detection, repair or replacement, which improves the convenience of detecting, repair or replacement of the extrusion structure, thereby improving the efficiency of using the 3D printer.

[0073] A 3D printer provided in Embodiment 3 of the present application includes the extrusion structure in Embodiment 1 or the print head in Embodiment 2;

[0074] By providing a fixed shell that is detachably connected to the print head, modular disassembly of the extrusion structure and the print head is achieved, which improves the convenience of detecting, repairing or replacing the extrusion structure. The overall modular design of the extrusion structure is more convenient for replacement and assembly and easy to disassemble, thereby improving the utilization efficiency of the 3D printer; by providing a detachably connected first shell 1 and a second shell 2, the first shell 1 or the second shell 2 of the fixed shell can be directly opened for inspection, repair or replacement, which improves the convenience of detecting, repairing or replacing the extrusion structure, thereby improving the utilization efficiency of the print head.

[0075] On the other hand, as shown in the figure, reference numeral 1, an embodiment of the present application further provides an extrusion structure, which is applied to a 3D printer, wherein the print head includes a housing, and the extrusion structure includes:

[0076] A fixed shell is used for detachably connecting with the housing; at least an extrusion assembly is provided in the fixed shell, and the extrusion assembly is used for driving the consumable 10 entering the extrusion structure to move;

[0077] The fixed housing includes a first housing 1 and a second housing 2 which are detachably connected.

[0078] Among them, label 2, based on label 1, the extrusion assembly includes a fixed rotating member 9, an adjustable rotating member 8 arranged opposite to the fixed rotating member 9, and a pressure regulating module for adjusting the relative position of the fixed rotating member 9 and the adjustable rotating member 8.

[0079] Among them, reference numeral 3, based on reference numeral 1, the first shell 1 is provided with at least two first connection holes 11, the second shell 2 is provided with at least two second connection holes 22 corresponding to the first connection holes 11, and the at least two first connection holes 11 and the at least two second connection holes 22 are connected to each other detachably by fasteners; or,

[0080] At least two first connection holes 11 and at least two second connection holes 22 realize detachable connection between the first shell 1, the second shell 2 and the print head through fasteners.

[0081] Among them, reference numeral 4, based on reference numeral 2, the pressure regulating module comprises an elastic member 7, a nut 61 and an adjusting screw 6 passing through the nut 61, one end of the elastic member 7 abuts against the adjustable rotating member 8, and the other end abuts against the nut 61;

[0082] The adjusting screw 6 is rotated to tighten or loosen the nut 61 on the elastic member 7; or,

[0083] The pressure regulating module comprises an elastic member 7, a nut 61 and an adjusting screw 6, one end of the elastic member 7 abuts against the adjustable rotating member 8, and the adjusting screw 6 passes through the nut 61 and abuts against the other end of the elastic member 7;

[0084] An accommodating space is formed between the first shell 1 and the second shell 2 , and the nut 61 is clamped and fixed in the accommodating space. The adjusting screw 6 can tighten or loosen the elastic member 7 by rotating.

[0085] Among them, number 5, based on number 2, the adjustable rotating member 8 includes an adjusting arm, a movable shell and a rotating member rotatably connected to the movable shell, one end of the adjusting arm is fixedly connected to the movable shell, and the other end is rotatably connected to the fixed shell, the movable shell abuts against one end of the elastic member 7, and the rotating member and the fixed rotating member 9 are arranged opposite to each other.

[0086] Among them, reference numeral 6, based on reference numeral 1, the extrusion structure further includes an incoming material detection structure disposed in the fixed shell, for detecting whether the consumable material 10 entering the extrusion structure is interrupted;

[0087] The incoming material detection structure includes a photoelectric module 3, an incoming material shifting block 4 and a shifting block elastic member 5 connected to the incoming material shifting block 4. The position of the incoming material shifting block 4 includes a first position and a second position. In the first position, at least part of the incoming material shifting block 4 is located on the moving path of the consumable 10. In the second position, the incoming material shifting block 4 triggers the photoelectric module 3, and the shifting block elastic member 5 is used to apply force to the incoming material shifting block 4 from the second position to the first position.

[0088] Among them, reference numeral 7, based on reference numeral 1, the housing is provided with a consumables channel, and a fixed rotating member 9 and an adjustable rotating member 8 are arranged opposite to each other on both sides of the consumables channel;

[0089] The incoming material detection structure is arranged at the entrance of the consumable channel, and is used to detect whether the consumable 10 entering the extrusion structure is broken or blocked.

[0090] Among them, number 8, based on number 1, the shell includes a front shell and a rear shell 100, and the front shell and the rear shell 100 include a receiving space, at least part of the extrusion structure is located in the receiving space, the first shell 1 and the rear shell 100 are detachably connected, and the rear shell 100 is used to connect to a 3D printer.

[0091] Reference numeral 9, a print head, comprising a housing and any one of the extrusion structures of reference numerals 1 to 8;

[0092] The print head also includes a cutter structure, which is used for cutting consumables 10 in the print head.

[0093] Reference numeral 10, a 3D printer, comprising any extrusion structure of reference numerals 1 to 8; or the print head of reference numeral 9.

[0094] 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. An extrusion structure, applied to a print head, the print head comprising a housing, characterized in that: The extrusion structure comprises: A fixed shell, used for being detachably connected to the housing; at least an extrusion assembly is provided in the fixed shell, and the extrusion assembly is used for driving the consumables entering the extrusion structure to move; The fixed shell includes a first shell and a second shell that are detachably connected.

2. The extrusion structure according to claim 1, characterized in that: The extrusion assembly includes a fixed rotating member, an adjustable rotating member arranged opposite to the fixed rotating member, and a pressure regulating module for regulating the relative position of the fixed rotating member and the adjustable rotating member.

3. The extrusion structure according to claim 1, characterized in that: The first shell is provided with at least two first connection holes, and the second shell is provided with at least two second connection holes corresponding to the first connection holes, and the at least two first connection holes and the at least two second connection holes are connected to each other detachably through fasteners. or, At least two of the first connection holes and at least two of the second connection holes realize detachable connection between the first shell, the second shell and the print head through fasteners.

4. The extrusion structure according to claim 2, characterized in that: The pressure regulating module comprises an elastic member, a nut and an adjusting screw passing through the nut, wherein one end of the elastic member abuts against the adjustable rotating member, and the other end abuts against the nut; The adjusting screw is rotated to tighten or loosen the nut on the elastic member; or, The pressure regulating module comprises an elastic member, a nut and an adjusting screw, one end of the elastic member abuts against the adjustable rotating member, and the adjusting screw passes through the nut and abuts against the other end of the elastic member; An accommodating space is formed between the first shell and the second shell, the nut is clamped and fixed in the accommodating space, and the adjusting screw can tighten or loosen the elastic member by rotating.

5. The extrusion structure according to claim 4, characterized in that: The adjustable rotating member includes an adjusting arm, a movable shell and a rotating member rotatably connected to the movable shell. One end of the adjusting arm is fixedly connected to the movable shell, and the other end is rotatably connected to the fixed shell. The movable shell abuts against one end of the elastic member, and the rotating member is arranged opposite to the fixed rotating member.

6. The extrusion structure according to claim 1, characterized in that: The extrusion structure further comprises an incoming material detection structure disposed in the fixed shell, for detecting whether the consumable material entering the extrusion structure is interrupted; The incoming material detection structure includes a photoelectric module, an incoming material shifting block, and a shifting block elastic member connected to the incoming material shifting block. The position of the incoming material shifting block includes a first position and a second position. In the first position, at least a portion of the incoming material shifting block is located on the consumable material moving path. In the second position, the incoming material shifting block triggers the photoelectric module. The shifting block elastic member is used to apply force to the incoming material shifting block from the second position to the first position.

7. The extrusion structure according to claim 2, characterized in that: The housing is provided with a consumables passage, and the fixed rotating member and the adjustable rotating member are arranged opposite to each other at two sides of the consumables passage; The incoming material detection structure is arranged at the entrance of the consumable channel, and is used to detect whether the consumable entering the extrusion structure is broken or blocked.

8. The extrusion structure according to claim 1, characterized in that: The shell comprises a front shell and a rear shell, wherein a receiving space is provided between the front shell and the rear shell, wherein at least a portion of the extrusion structure is located in the receiving space, and the first shell and the rear shell are detachably connected, and the rear shell is used to connect to a 3D printer.

9. A print head, characterized in that: comprising a housing and an extruded structure according to any one of claims 1 to 8; The print head also includes a cutter structure, which is used for cutting consumables in the print head.

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

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