CN215882618U

CN215882618U - 3D prints extruder

Info

Publication number: CN215882618U
Application number: CN202023291866.2U
Authority: CN
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 严罗林
Original assignee: Huizhou Chuangxiang 3d Technology Co ltd
Current assignee: Huizhou Chuangxiang 3d Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-02-22
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to the technical field of 3D printing, and discloses a 3D printing extruder, which comprises: extruding the box body, wherein an extrusion cavity is formed in the extrusion box body; the extrusion motor is arranged on the extrusion box body and used for providing extrusion power; the transmission assembly is arranged in the extrusion cavity and comprises a first worm, a second worm, a first worm wheel and a second worm wheel, the first worm and the second worm are driven by the extrusion motor to synchronously rotate, the rotation direction of the second worm is opposite to that of the first worm, the first worm wheel is rotationally connected to the inner wall of the extrusion cavity and meshed with the first worm, and the second worm wheel is rotationally connected to the inner wall of the extrusion cavity and meshed with the second worm; the first extrusion gear is connected to the first worm gear and rotates along with the first worm gear; and the second extrusion gear is connected to the second worm gear and rotates along with the second worm gear, and the second extrusion gear and the first extrusion gear jointly engage with the material and extrude the material.

Description

3D prints extruder

Technical Field

The utility model relates to the technical field of 3D printing, in particular to a 3D printing extruder.

Background

In 3D printing technical field, 3D prints the extruder and is used for printing the pay-off. At present common 3D prints the extruder and is the direct drive formula 3D and prints the extruder, increases the moment of torsion of extruding the gear through a pair of intermeshing's gear wheel and pinion to increase extrusion dynamics. However, the 3D printing extruder of this kind of mode is because the restriction that receives gear wheel and pinion volume, and its drive ratio is often not big for the effect of increase extrusion gear moment of torsion is not obvious, leads to easily that the extrusion dynamics is not enough, causes the pay-off not enough, has reduced printing quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a 3D printing extruder, which not only has a small volume, but also has high extrusion force, so that the feeding is sufficient, and the printing quality is ensured.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a 3D printing extruder comprising: an extrusion cartridge body having an extrusion chamber formed therein; the extrusion motor is arranged on the extrusion box body and used for providing extrusion power; the transmission assembly is arranged in the extrusion cavity and comprises a first worm, a second worm, a first worm wheel and a second worm wheel, the first worm and the second worm are driven by the extrusion motor to synchronously and reversely rotate, the first worm wheel is rotationally connected to the inner wall of the extrusion cavity and meshed with the first worm, and the second worm wheel is rotationally connected to the inner wall of the extrusion cavity and meshed with the second worm; the first extrusion gear is connected to the first worm gear and rotates along with the first worm gear; and the second extrusion gear is connected to the second worm gear and rotates along with the second worm gear, and the second extrusion gear and the first extrusion gear jointly engage with a material and extrude the material.

As a preferred scheme of 3D printing extruder, this 3D printing extruder still includes the rotating member, the rotating member rotate connect in extrude on the inner wall in chamber, the second worm wheel with the second extrude gear rotate connect in on the rotating member for second worm wheel and second extrude the gear and can remove along with the rotating member, and the operating personnel of being convenient for changes the material.

As a preferred scheme of the 3D printing extruder, the 3D printing extruder further comprises a first rotating shaft, the second worm wheel and the second extrusion gear are fixedly mounted on the first rotating shaft, two ends of the first rotating shaft are rotatably connected to the rotating member through bearings, and the second worm wheel and the second extrusion gear are rotatably connected to the inner wall of the extrusion cavity.

As a preferred scheme of 3D printing extruder, be equipped with the pivot on the rotating member, the pivot rotate connect in extrude on the inner wall in chamber, just the one end of rotating member can use the pivot rotates as the rotation center.

As a preferred scheme of 3D printing extruder, the one end that the revolving part kept away from the pivot is equipped with the handle, and the operating personnel of being convenient for rotates the revolving part to operating personnel changes the material.

As an optimal scheme of 3D printing extruder, this 3D printing extruder still includes the extension spring, the one end of extension spring connect in extrude on the inner wall in chamber, the other end of extension spring connect in the rotating member is kept away from the one end of pivot not only makes the meshing of second worm wheel and second worm stable, is favorable to the second to extrude the interlock of gear and first extrusion gear to the material moreover, is favorable to guaranteeing the second to extrude the gear and the extrusion dynamics of first extrusion gear to the material.

As a preferred scheme of 3D printing extruder, this 3D printing extruder is still including extruding the upper cover, extrude the upper cover connect in on the rotating member, extrude the upper cover and follow the rotating member and remove in order to realize extruding opening and closing of chamber, extrude the upper cover and be used for hiding extrude the chamber, can prevent that external dust and impurity from falling into and extrude in the chamber.

As a preferred scheme of the 3D printing extruder, the 3D printing extruder further comprises a second rotating shaft, the first worm wheel and the first extrusion gear are fixedly mounted on the second rotating shaft, two ends of the second rotating shaft are rotatably connected to the inner wall of the extrusion box body, and the first worm wheel and the first extrusion gear are rotatably connected to the inner wall of the extrusion cavity.

As a preferable scheme of the 3D printing extruder, the 3D printing extruder further comprises a feeding connector and a feeding conduit, the feeding connector is disposed on the extrusion box body, one end of the feeding conduit is communicated with the feeding connector, and the other end of the feeding conduit is used for guiding the material to the meshing position of the second extrusion gear and the first extrusion gear, so that the material can enter the extrusion cavity from the feeding connector and be sent to the meshing position of the second extrusion gear and the first extrusion gear.

As a preferred scheme of 3D printing extruder, this 3D printing extruder still includes the motor mounting panel, the extrusion motor passes through the motor mounting panel connect in extrude on the box body, be convenient for extrusion motor's installation and dismantlement.

The utility model has the beneficial effects that:

the utility model provides a 3D printing extruder which comprises an extrusion box body, an extrusion motor, a transmission assembly, a first extrusion gear and a second extrusion gear, wherein the transmission assembly comprises a first worm, a second worm, a first worm wheel and a second worm wheel, an output shaft of the extrusion motor extends into an extrusion cavity of the extrusion box body, the first worm and the second worm with opposite rotation directions are connected to an output shaft of the extrusion motor, the first extrusion gear is connected to the first worm wheel, the first worm wheel is meshed with the first worm, the second extrusion gear is connected to the second worm wheel, and the second worm wheel is meshed with the second worm, so that when the extrusion motor rotates, the first extrusion gear and the second extrusion gear can be driven to be in opposite directions, and materials are meshed and extruded downstream. This 3D prints extruder has adopted to revolve to opposite first worm and second worm to carry out the transmission, compares gear drive among the prior art, has small, and the advantage that the drive ratio is big for this 3D prints extruder has great extrusion dynamics, makes the pay-off sufficient, is favorable to guaranteeing printing quality.

Drawings

FIG. 1 is a schematic exploded view of one perspective view of a 3D printing extruder provided by an embodiment of the present invention;

FIG. 2 is a schematic exploded view of another perspective of a 3D printing extruder provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a 3D printing extruder provided by an embodiment of the utility model after an extrusion cavity is opened;

fig. 4 is a schematic structural diagram of a 3D printing extruder according to an embodiment of the present invention after an extrusion chamber is closed.

In the figure:

1. extruding the box body; 11. an extrusion chamber; 2. an extrusion motor; 31. a first worm; 32. a second worm; 33. A first worm gear; 34. a second worm gear; 4. a first extrusion gear; 5. a second extrusion gear; 6. a rotating member; 61. a rotating shaft; 62. a handle; 7. a first rotating shaft; 8. a tension spring; 9. extruding an upper cover; 10. a second rotating shaft; 101. a feed connection; 102. a feed conduit; 103. motor mounting panel.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless explicitly specified or limited otherwise, the terms "connected" and "connected" are to be construed broadly, e.g., as meaning both mechanically and electrically; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, a first feature "on" or "over" a second feature includes a first feature directly over or obliquely over the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature being "under" and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the 3D printing extruder provided by the present invention is further described by the following embodiments with reference to the accompanying drawings.

The utility model provides a 3D printing extruder, as shown in figures 1-2, the 3D printing extruder comprises an extrusion box body 1, an extrusion motor 2, a transmission assembly, a first extrusion gear 4 and a second extrusion gear 5, wherein an extrusion cavity 11 is formed in the extrusion box body 1, the extrusion cavity 11 is a cavity with an opening at one end, an output shaft of the extrusion motor 2 extends into the extrusion cavity 11 of the extrusion box body 1, the transmission assembly is arranged in the extrusion cavity 11, the input end of the transmission assembly is connected to the output shaft of the extrusion motor 2, the output end of the transmission assembly is connected to the first extrusion gear 4 and the second extrusion gear 5, the first extrusion gear 4 and the second extrusion gear 5 are correspondingly arranged, and the two gears can engage with materials and convey the materials downstream under the combined action.

Preferably, this 3D prints extruder still includes motor mounting panel 103, and extrusion motor 2 passes through motor mounting panel 103 to be connected on extruding box body 1, is convenient for extrusion motor 2's output shaft to stretch into in extruding chamber 11. Specifically, the motor mounting plate 103 is connected to the extrusion box body 1 and the extrusion motor 2 through the connecting bolt, so that the extrusion motor 2 and the extrusion box body 1 are convenient to disassemble, and the later maintenance is convenient.

In this embodiment, drive assembly includes two sets of worm gear subassemblies that revolve to opposite, can drive first extrusion gear 4 and second extrusion gear 5 and rotate with opposite rotation direction, make first extrusion gear 4 and second extrusion gear 5 can the interlock and carry the material when rotating, gear drive among prior art is compared in this kind of transmission mode, and is small to have, the big advantage of drive ratio, make this 3D printer extruder have great extrusion dynamics, make the pay-off sufficient, be favorable to guaranteeing printing quality.

Specifically, the transmission assembly comprises a first worm 31, a second worm 32, a first worm wheel 33 and a second worm wheel 34, the first worm 31 and the second worm 32 are driven by an output shaft of the extrusion motor 2 to synchronously rotate, the rotation direction of the second worm 32 is opposite to that of the first worm 31, the first worm wheel 33 is rotatably connected to the inner wall of the extrusion cavity 11 and meshed with the first worm 31, the second worm wheel 34 is rotatably connected to the inner wall of the extrusion cavity 11 and meshed with the second worm 32, and the end face of the first extrusion gear 4 is fixedly connected to the end face of the first worm wheel 33, so that the first extrusion gear 4 rotates along with the first worm wheel 33; the end face of the second extrusion gear 5 is fixedly connected to the end face of the second worm wheel 34, so that the second extrusion gear 5 rotates with the second worm wheel 34. With this transmission structure, the output shaft of the extrusion motor 2 can drive the first worm wheel 33 and the second worm wheel 34 to rotate in opposite rotational directions by the first worm 31 and the second worm 32, thereby driving the first extrusion gear 4 and the second extrusion gear 5 to rotate in opposite rotational directions.

Preferably, the 3D printing extruder further comprises a second rotating shaft 10, the first worm gear 33 and the first extrusion gear 4 are mounted on the second rotating shaft 10, and two ends of the second rotating shaft 10 are rotatably connected to the inner wall of the extrusion box body 1, so that the first worm gear 33 and the first extrusion gear 4 are rotatably connected in the extrusion cavity 11. Further, the two ends of the second rotating shaft 10 are rotatably connected to the inner wall of the extrusion case 1 through bearings, so that the first worm wheel 33 and the first extrusion gear 4 rotate smoothly, which is beneficial to reducing transmission resistance.

In this embodiment, the 3D printing extruder further comprises a rotating member 6, and one end of the rotating member 6 is rotatably connected to the inner wall of the extrusion cavity 11, so that the other end of the rotating member 6 can be far away from the extrusion cavity 11 when the rotating member 6 rotates, so as to open the extrusion cavity 11. As shown in fig. 3, the second worm wheel 34 and the second extrusion gear 5 are rotatably connected to the rotating member 6, and when the rotating member 6 rotates relative to the extrusion chamber 11, the second worm wheel 34 and the second extrusion gear 5 move along with the rotating member, so that the second worm wheel 34 is disengaged from the second worm 32, and the second extrusion gear 5 is disengaged from the first extrusion gear 4, thereby facilitating the replacement of the material by an operator.

Specifically, the 3D printing extruder further comprises a first rotating shaft 7, the second worm wheel 34 and the second extrusion gear 5 are fixedly mounted on the first rotating shaft 7, and both ends of the first rotating shaft 7 are rotatably connected to the rotating member 6. Further, both ends of the first rotating shaft 7 are rotatably connected to the rotating member 6 through bearings, so that the second worm wheel 34 and the second extrusion gear 5 rotate smoothly, which is beneficial to reducing transmission resistance.

In this embodiment, be equipped with pivot 61 on the rotating member 6, the one end of rotating member 6 is rotated through pivot 61 and is connected on extruding the inner wall of chamber 11, and the one end of rotating member 6 can use pivot 61 to rotate as the center of rotation for rotating member 6 can smoothly rotate for extruding box 1, makes the rotation of rotating member 6 nimble. Preferably, a handle 62 is provided at one end of the rotating member 6 away from the rotating shaft 61, so that an operator can conveniently rotate the rotating member 6 through the handle 62 to replace materials.

In this embodiment, this 3D prints extruder still includes extension spring 8, the one end of extension spring 8 is connected on extruding the inner wall of chamber 11, the other end of extension spring 8 is connected in the one end that pivot 61 was kept away from to rotating member 6 for extension spring 8 can stimulate rotating member 6 so that second worm wheel 34 can mesh with second worm 32, make the transmission between the two stable, still make the second extrude gear 5 can interlock the material with first extrusion gear jointly, be favorable to guaranteeing that second extrusion gear 5 and first extrusion gear extrude the dynamics to the material. Specifically, be equipped with first connecting pin on the rotating member 6, be equipped with the second connecting pin on the inner wall of extruding chamber 11, the both ends of extension spring 8 are connected respectively in first connecting pin and second connecting pin, are convenient for extension spring 8 and rotating member 6 and extrude being connected of the inner wall of chamber 11.

Preferably, as shown in fig. 3 and 4, the 3D printing extruder further comprises an extrusion upper cover 9, the extrusion upper cover 9 is connected to the rotating member 6, the extrusion upper cover 9 can move along with the rotating member 6, so that the extrusion cavity 11 can be opened and closed, the material in the extrusion cavity 11 can be conveniently replaced, the extrusion upper cover 9 is used for covering the extrusion cavity 11, the extrusion upper cover 9 covers the opening of the extrusion cavity 11, external dust and impurities can be prevented from falling into the extrusion cavity 11, and the material is prevented from being polluted.

In this embodiment, the 3D printing extruder further includes a feeding connector 101 and a feeding conduit 102, the feeding connector 101 is disposed on the extrusion box body 1, and the material is introduced into the extrusion cavity 11 through the feeding connector 101; one end of the feeding conduit 102 is communicated with the feeding joint 101, and the other end of the feeding conduit 102 is used for guiding the material to the meshing position of the second extrusion gear 5 and the first extrusion gear 4, so that meshing and conveying of the material are facilitated.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A3D printing extruder, comprising:

an extrusion box body (1), wherein an extrusion cavity (11) is formed in the extrusion box body (1);

the extruding motor (2) is arranged on the extruding box body (1), and the extruding motor (2) is used for providing extruding power;

the transmission assembly is arranged in the extrusion cavity (11) and comprises a first worm (31), a second worm (32), a first worm wheel (33) and a second worm wheel (34), the first worm (31) and the second worm (32) are driven by the extrusion motor (2) to synchronously and reversely rotate, the first worm wheel (33) is rotationally connected to the inner wall of the extrusion cavity (11) and meshed with the first worm (31), and the second worm wheel (34) is rotationally connected to the inner wall of the extrusion cavity (11) and meshed with the second worm (32);

a first extrusion gear (4), wherein the first extrusion gear (4) is connected to the first worm gear (33) and rotates with the first worm gear (33);

a second extrusion gear (5), wherein the second extrusion gear (5) is connected to the second worm gear (34) and rotates with the second worm gear (34), and the second extrusion gear (5) and the first extrusion gear (4) jointly engage with materials and extrude the materials.

2. 3D printing extruder according to claim 1, further comprising a rotating member (6), said rotating member (6) being rotatably connected to the inner wall of the extrusion chamber (11), said second worm gear (34) and said second extrusion gear (5) being rotatably connected to said rotating member (6).

3. The 3D printing extruder according to claim 2, further comprising a first rotating shaft (7), wherein the second worm gear (34) and the second extrusion gear (5) are fixedly mounted on the first rotating shaft (7), and both ends of the first rotating shaft (7) are rotatably connected to the rotating member (6).

4. The 3D printing extruder according to claim 2, wherein a rotating shaft (61) is arranged on the rotating member (6), the rotating shaft (61) is rotatably connected to the inner wall of the extrusion cavity (11), and one end of the rotating member (6) can rotate by taking the rotating shaft (61) as a rotating center.

5. 3D printing extruder according to claim 4, wherein the end of the rotating member (6) remote from the rotating shaft (61) is provided with a handle (62).

6. The 3D printing extruder according to claim 4, further comprising a tension spring (8), wherein one end of the tension spring (8) is connected to the inner wall of the extrusion cavity (11), and the other end of the tension spring (8) is connected to one end of the rotating member (6) far away from the rotating shaft (61).

7. 3D printing extruder according to claim 2, further comprising an extrusion upper cover (9), the extrusion upper cover (9) being connected to the rotating member (6), the extrusion upper cover (9) being used to cover the extrusion cavity (11).

8. The 3D printing extruder according to claim 1, further comprising a second rotating shaft (10), wherein the first worm gear (33) and the first extrusion gear (4) are fixedly mounted on the second rotating shaft (10), and two ends of the second rotating shaft (10) are rotatably connected to the inner wall of the extrusion box body (1).

9. The 3D printing extruder according to claim 1, further comprising a feeding joint (101) and a feeding conduit (102), wherein the feeding joint (101) is disposed on the extrusion box body (1), one end of the feeding conduit (102) is communicated with the feeding joint (101), and the other end of the feeding conduit (102) is used for guiding the material to the meshing position of the second extrusion gear (5) and the first extrusion gear (4).

10. The 3D printing extruder according to claim 1, further comprising a motor mounting plate (103), wherein the extrusion motor (2) is connected to the extrusion box body (1) through the motor mounting plate (103).