CN215320640U

CN215320640U - Extrusion device and 3D printer

Info

Publication number: CN215320640U
Application number: CN202120428842.2U
Authority: CN
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 鲍海东
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-28
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses an extrusion device and a 3D printer, and relates to the technical field of 3D printers. The extrusion device comprises a plurality of extrusion mechanisms which are arranged in a matrix. The extruding mechanism comprises a driving assembly, an extruding assembly, a first mounting plate and a second mounting plate, an interval space is arranged between the first mounting plate and the second mounting plate, the driving assembly drives the extruding assembly to extrude consumables through a gear assembly, and the driving assembly, the gear assembly and the extruding assembly are arranged between the first mounting plate and the second mounting plate side by side along the length direction of the interval space. Due to the arrangement, the width of a single extrusion mechanism is greatly reduced, the thinnest design of the single extrusion mechanism is realized, and compared with the single extrusion mechanism in the prior art, the volume of the single extrusion mechanism is reduced by 20%, so that the volume of a plurality of extrusion mechanisms arranged in a matrix is greatly reduced, and further the volume of the 3D printer is correspondingly reduced.

Description

Extrusion device and 3D printer

Technical Field

The utility model relates to the technical field of 3D printers, in particular to an extrusion device and a 3D printer.

Background

The 3D printing technology, also known as additive manufacturing technology or rapid prototyping technology, is a technology for constructing an object by using consumables such as powdered metal, ceramic, plastic, or filament plastic and the like in a layer-by-layer printing manner on the basis of a digital model (three-dimensional CAD model) file. Typical additive manufacturing techniques that are currently widely used and mature can be summarized in the following five categories, depending on the material form and process implementation used: stereolithography, laminated body fabrication, fused deposition, selective laser sintering, and three-dimensional printing techniques. Fused deposition rapid prototyping (FDM), also known as fused deposition, is a process in which a filamentary hot-melt material is heated to melt and extruded through an orifice having a fine nozzle. The hot melt material is sprayed out from the nozzle after being melted, is deposited on the printing workbench panel or the previous layer of solidified material, starts to be solidified after the temperature is lower than the solidification temperature, and forms a final finished product through layer-by-layer accumulation of the material.

At present, only 1-2 nozzles can work simultaneously by adopting a fused deposition rapid prototyping 3D printer, and rapid printing can not be realized for a model with a large volume. In the 3D printer with a plurality of nozzles in the prior art, the extrusion device occupies a large volume, so that the 3D printer is large in volume.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an extrusion device and a 3D printer, wherein the extrusion device occupies a small volume, and the 3D printer using the extrusion device not only can rapidly print a model with a large volume, but also has a small volume.

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

the utility model provides an extrusion device, includes a plurality of extrusion mechanism, and is a plurality of extrusion mechanism is the matrix arrangement, wherein, extrusion mechanism includes drive assembly, crowded material subassembly, first mounting panel and second mounting panel, first mounting panel with be provided with the interval space between the second mounting panel, drive assembly passes through the gear assembly drive crowded material subassembly extrusion consumptive material, drive assembly the gear assembly with crowded material subassembly is followed the length direction in interval space set up side by side in first mounting panel with between the second mounting panel.

Optionally, in order to facilitate replacing the consumable material, the extruding mechanism further comprises a material replacing assembly, wherein the material replacing assembly is arranged on one side of the material extruding assembly and can apply force to the material extruding assembly to enable the consumable material to be separated from the material extruding assembly.

Optionally, the material extruding assembly comprises a first material extruding gear and a second material extruding gear, the first material extruding gear is meshed with the second material extruding gear, the consumable is arranged at non-meshed ends of the first material extruding gear and the second material extruding gear, and the first material extruding gear can be meshed with the second material extruding gear for transmission so as to extrude the consumable. The non-meshing end extrusion consumptive material through first crowded material gear and the crowded material gear of second, extrusion end and transmission end separately arrange, and the consumptive material can not pollute the meshing end, avoids influencing the transmission of first crowded material gear and the crowded material gear of second.

Optionally, a first extrusion portion is arranged along the circumferential direction of the non-meshing end of the first extrusion gear, a second extrusion portion is arranged along the circumferential direction of the non-meshing end of the second extrusion gear, the first extrusion portion and the second extrusion portion are arranged oppositely, and the consumable is arranged between the first extrusion portion and the second extrusion portion. The first extruding gear drives the second extruding gear to rotate, and the first extruding part and the second extruding part are matched to extrude the consumable.

Optionally, the material changing assembly comprises a material changing handle and an elastic piece, one end of the material changing handle is rotatably connected with the first mounting plate and/or the second mounting plate and is fixedly connected with the second extrusion gear, and the elastic piece can be abutted against the material changing handle to drive the second extrusion gear to be meshed with the first extrusion gear; the material changing handle rotates to compress the elastic piece so as to drive the second extruding gear to be disengaged from the first extruding gear. The elasticity of the elastic piece is utilized to drive the second extrusion gear to be meshed with the first extrusion gear so as to extrude the consumable; the material changing handle rotates, the elastic piece compresses to drive the second material extruding gear to be disengaged from the first material extruding gear, and the structure is simple and easy to operate.

Optionally, in order to realize that the second extrusion gear is driven by the elastic force of the elastic piece and the second extrusion gear is disengaged from the first extrusion gear through the material changing handle. The reloading assembly further comprises a first elastic piece support and a second elastic piece support, the first elastic piece support is fixed on the first mounting plate and/or the second mounting plate, the second elastic piece support is fixedly connected with the reloading handle, the elastic piece is arranged between the first elastic piece support and the second elastic piece support, and the reloading handle rotates to compress the elastic piece.

Optionally, the gear assembly includes first drive gear and second drive gear, first drive gear with drive assembly fixed connection, first drive gear with second drive gear meshes, second drive gear with crowded material subassembly meshes, in order to drive crowded material subassembly extrusion the consumptive material. The gear assembly is used for transmitting power, so that the thinnest design of the material extruding mechanism is facilitated.

Optionally, the diameter of the first transmission gear is smaller than the diameter of the second transmission gear. The gear assembly is designed as a speed reduction mechanism, so that the torque of the driving assembly can be amplified, and the low-frequency vibration of the driving assembly is avoided.

Optionally, the driving assembly includes a patch stepping motor, and the patch stepping motor is fixedly connected to the first mounting plate or the second mounting plate. The thickness of the patch stepping motor is thinner, and the patch stepping motor conforms to the thinnest design of the extrusion mechanism.

Optionally, the extrusion device further comprises a plurality of profile brackets, the extrusion mechanisms are mounted between the two profile brackets, and the plurality of extrusion mechanisms are arranged in an array along the length direction of the profile brackets; every two the section bar support is a set of, and two adjacent sets of section bar support fixed connection. A plurality of extrusion mechanism of a plurality of section bar support installation realize a plurality of extrusion mechanism's rationalization overall arrangement for the volume of 3D printer is minimum.

A 3D printer comprising the extrusion apparatus of any of the above.

The utility model has the beneficial effects that:

according to the extrusion device provided by the utility model, the spacing space is arranged between the first mounting plate and the second mounting plate, and the driving assembly, the gear assembly and the extruding assembly are arranged between the first mounting plate and the second mounting plate side by side along the length direction of the spacing space, so that the width of a single extrusion mechanism is greatly reduced, the thinnest design of the single extrusion mechanism is realized, and the volume of the single extrusion mechanism is reduced by 20% compared with that of the single extrusion mechanism in the prior art, so that the volumes of a plurality of extrusion mechanisms arranged in a matrix manner are greatly reduced, and further the volume of the 3D printer is correspondingly reduced, so that the 3D printer can realize quick printing and occupies a small volume.

Drawings

FIG. 1 is a schematic structural diagram of an extrusion apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of a single extrusion mechanism provided in accordance with one embodiment of the present invention;

FIG. 3 is a front view of a single extrusion mechanism provided in accordance with an embodiment of the present invention;

FIG. 4 is an assembled top view of a single extrusion mechanism provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic view of a single extrusion mechanism with the second mounting plate removed, in accordance with an embodiment of the present invention.

In the figure:

100. a profile support; 200. an extrusion mechanism;

1. a drive assembly; 2. a material extruding component; 3. a first mounting plate; 4. a second mounting plate; 5. a gear assembly; 6. a refueling assembly; 7. a hose; 8. a pneumatic joint; 9. a consumable lead nozzle;

11. a patch stepper motor; 12. a motor shaft; 21. a first extrusion gear; 22. a second extrusion gear; 23. mounting a bracket; 51. a first drive gear; 52. a second transmission gear; 61. a material changing handle; 62. an elastic member; 63. a first elastic member support; 64. a second elastic member support;

211. a first pressing portion; 221. a second pressing portion; 611. and a fourth rotating shaft.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected" and "fixed" are to be understood broadly, e.g. as a fixed connection, a detachable connection, or an integral part; may be mechanically coupled or may be indirectly coupled through an intermediary. 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.

In the description of the present embodiment, the terms "upper" and "lower" and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

As shown in fig. 1, the present embodiment provides an extrusion apparatus, which includes a plurality of extrusion mechanisms 200 and a plurality of profile brackets 100, wherein the plurality of extrusion mechanisms 200 are arranged in a matrix, the extrusion mechanisms 200 are installed between two profile brackets 100, and the plurality of extrusion mechanisms 200 are arranged in an array along the length direction of the profile brackets 100; every two section bar supports 100 are in one group, and two adjacent groups of section bar supports 100 are fixedly connected. In the present embodiment, two sets of profile supports 100 are provided, ten extrusion mechanisms 200 are installed between two profile supports 100 in each set, and two adjacent profile supports 100 in two sets of profile supports 100 are fixedly connected by fastening bolts. Of course, in other embodiments, the length of the profile holders 100 and the number of groups of profile holders 100 are selected according to requirements, and the number of extrusion mechanisms 200 between two profile holders 100 is provided according to the length and the requirements of the profile holders 100.

As shown in fig. 2-5, the extruding mechanism 200 includes a driving assembly 1, an extruding assembly 2, a first mounting plate 3 and a second mounting plate 4, a space is provided between the first mounting plate 3 and the second mounting plate 4, the driving assembly 1 drives the extruding assembly 2 to extrude the consumable through a gear assembly 5, and the driving assembly 1, the gear assembly 5 and the extruding assembly 2 are arranged between the first mounting plate 3 and the second mounting plate 4 side by side along the length direction of the space.

The extrusion device that this embodiment provided, through set up the interval space between first mounting panel 3 and second mounting panel 4, with drive assembly 1, gear assembly 5 and crowded material subassembly 2 along the length direction of interval space set up side by side between first mounting panel 3 and second mounting panel 4, such setting has reduced the width of single extrusion mechanism 200 greatly, the thinnest design of single extrusion mechanism 200 has been realized, single extrusion mechanism 200 volume in for prior art has reduced 20%, thereby make a plurality of extrusion mechanism 200's that are the matrix arrangement volume reduce greatly, and then the volume of 3D printer reduces correspondingly.

In the present embodiment, in order to fix the width of the space between the first mounting plate 3 and the second mounting plate 4, the first mounting plate 3 and the second mounting plate 4 are fixedly connected by a screw having a set length.

Optionally, the first mounting plate 3 and the second mounting plate 4 each include a mounting plate body and a connecting portion, the connecting portions are disposed at two ends of the mounting plate body, and the connecting portions are fixedly connected to the profile bracket 100 through fastening bolts. Preferably, in order to reduce the occupied space of the first mounting plate 3 and the second mounting plate 4 along the length direction of the profile bracket 100, the connecting part extends into the space between the first mounting plate 3 and the second mounting plate 4, the connecting part is of a U-shaped structure, the profile bracket 100 is mounted in a U-shaped groove of the U-shaped structure, and the side wall of the U-shaped groove is fixedly connected with the profile bracket 100 through a fastening bolt.

Optionally, the gear assembly 5 includes a first transmission gear 51 and a second transmission gear 52, the first transmission gear 51 is fixedly connected to the driving assembly 1, the first transmission gear 51 is engaged with the second transmission gear 52, and the second transmission gear 52 is engaged with the material extruding assembly 2 to drive the material extruding assembly 2 to extrude the consumable material.

Preferably, the driving assembly 1 comprises a patch stepping motor 11 and a motor shaft 12, and the thickness of the patch stepping motor 11 is thinner, which is in accordance with the thinnest design of the extruding mechanism 200. Paster step motor 11 passes through fastening bolt fixed connection on first mounting panel 3, and first drive gear 51 is fixed in on motor shaft 12, and second drive gear 52 rotates with second mounting panel 4 through first pivot to be connected, and the one end of first pivot rotates with second mounting panel 4 to be connected, and other end fixedly connected with second drive gear 52. The patch stepping motor 11 drives the first transmission gear 51 to rotate, so as to drive the second transmission gear 52 to rotate, and the second transmission gear 52 drives the extruding component 2 to move, so as to extrude the consumable. Of course, in other embodiments, the patch stepping motor 11 may be fixedly connected to the second mounting plate 4 by fastening bolts.

Preferably, the diameter of the first transmission gear 51 is smaller than the diameter of the second transmission gear 52. In this embodiment, the gear assembly 5 is a speed reduction mechanism of the patch stepping motor 11, and the speed reduction ratio is 1.5, and the speed reduction mechanism can amplify the torque of the patch stepping motor 11 while avoiding the low-frequency vibration of the patch stepping motor 11.

In this embodiment, the patch stepper motor 11 of each extrusion mechanism 200 is individually controlled, and multiple extrusion mechanisms 200 can be operated individually or simultaneously. In actual working engineering, an operator can control a plurality of extrusion mechanisms 200 to work simultaneously or selectively control one or a plurality of extrusion mechanisms 200 to work according to the volume and the shape of the model so as to realize rapid printing.

Optionally, the material extruding assembly 2 includes a first material extruding gear 21 and a second material extruding gear 22, the first material extruding gear 21 and the second material extruding gear 22 are meshed and connected, the consumable material is disposed at non-meshed ends of the first material extruding gear 21 and the second material extruding gear 22, and the first material extruding gear 21 can be meshed and driven with the second material extruding gear 22 to extrude the consumable material. In the present embodiment, the first extruding gear 21 is rotatably connected with the first mounting plate 3 and the second mounting plate 4 through the second rotating shaft.

Optionally, extrusion device still includes that the mouth is led to the consumptive material 9 and pneumatic joint 8, and the mouth is led to the consumptive material 9 is fixed in on first mounting panel 3 and/or the second mounting panel 4, and pneumatic joint 8 is fixed in the top that the mouth was led to the consumptive material 9, connects soon with the hose 7 of outside transmission consumptive material through pneumatic joint 8, the dismouting of being convenient for. In this embodiment, the consumable guiding nozzle 9 is connected with the hose 7 for conveying the consumable, the hose 7 for conveying the consumable is arranged between the first extruding portion 211 and the second extruding portion 221, the first extruding gear 21 drives the second extruding gear 22 to rotate, and the first extruding portion 211 and the second extruding portion 221 extrude the consumable in the hose 7.

Preferably, a first pressing portion 211 is arranged along the circumferential direction of the non-meshing end of the first extrusion gear 21, a second pressing portion 221 is arranged along the circumferential direction of the non-meshing end of the second extrusion gear 22, the first pressing portion 211 and the second pressing portion 221 are oppositely arranged, and the consumable material is arranged between the first pressing portion 211 and the second pressing portion 221. In this embodiment, the first pressing part 211 and the second pressing part 221 each include a plurality of protrusions and a plurality of grooves, and the protrusions and the grooves are adjacently disposed to increase the friction force of the first pressing part 211 and the second pressing part 221 to the consumable hose 7, so that the consumables can be more easily extruded from the hose 7.

Optionally, the extrusion mechanism further includes a material changing assembly 6, and the material changing assembly 6 is disposed on one side of the material extruding assembly 2 and can apply force to the material extruding assembly 2 to separate the consumable from the material extruding assembly 2. The material changing assembly 6 is arranged to facilitate the changing of the consumable material, and the hose 7 for conveying the consumable material is taken out from between the first extrusion gear 21 and the second extrusion gear 22.

Optionally, the material changing assembly 6 includes a material changing handle 61 and an elastic member 62, one end of the material changing handle 61 is rotatably connected with the first mounting plate 3 and/or the second mounting plate 4 and is fixedly connected with the second extrusion gear 22, and the elastic member 62 can abut against the material changing handle 61 to drive the second extrusion gear 22 to mesh with the first extrusion gear 21; the material changing handle 61 rotates to compress the elastic member 62, so as to drive the second material extruding gear 22 to disengage from the first material extruding gear 21. In this embodiment, a mounting bracket 23 for mounting the second extruding gear 22 is further provided, one end of the mounting bracket 23 is provided with a third rotating shaft, the two mounting brackets 23 are arranged oppositely, two ends of the second extruding gear 22 are respectively sleeved on the two third rotating shafts, one end of the material changing handle 61 is fixedly connected with the other ends of the two oppositely arranged mounting brackets 23, and the other end of the material changing handle 61 is rotatably connected with the first mounting plate 3 and the second mounting plate 4 through a fourth rotating shaft 611.

Preferably, the material changing assembly 6 further comprises a first elastic member support 63 and a first elastic member support 64, the first elastic member support 63 is fixed on the first mounting plate 3 and/or the second mounting plate 4, the first elastic member support 64 is fixedly connected with the material changing handle 61, the elastic member 62 is arranged between the first elastic member support 63 and the first elastic member support 64, and the elastic member 62 can be compressed by rotating the material changing handle 61. In this embodiment, the first elastic member bracket 64 is U-shaped, two side walls of the U-shaped first elastic member bracket 64 are fixedly connected with the mounting brackets 23 of the two oppositely arranged second extrusion gears 22 and the material changing handle 61, a first screw is arranged at the bottom of the U-shaped first elastic member bracket 64, and one end of the elastic member 62 is sleeved on the first screw and is abutted against the bottom of the first elastic member bracket 64; the first elastic part support 63 is L-shaped, the short arm of the first elastic part support 63 is fixedly connected with the second mounting plate 4, the long arm is provided with a second screw, and the other end of the elastic part 62 is sleeved on the second screw and is abutted against the long arm. The elastic member 62 is a spring, and the first and second screws are provided to support the spring.

When the material needs to be replaced, the material replacing handle 61 is rotated, the second extruding gear 22 and the first extruding gear 21 are separated from abutting connection, the hose 7 for conveying the consumable material is loosened, and therefore the consumable material can be replaced. After the consumable is replaced, the second extrusion gear 22 continues to extrude the consumable under the elastic force of the elastic member 62.

Example two

This embodiment provides a 3D printer, and this 3D printer includes the extrusion device that embodiment one provided, and this extrusion device fixes in the frame of 3D printer. The 3D printer that this embodiment provided, when printing the great model of volume, can control a plurality of extrusion mechanism simultaneous workings, perhaps selectively control one of them or a plurality of extrusion mechanism work, can realize the quick printing of the great model of volume, realized the thinnest volume of single extrusion mechanism moreover for a plurality of extrusion mechanism occupation volume that are the matrix arrangement reduces by a wide margin compared with prior art, thereby makes the occupation volume of 3D printer reduce.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides an extrusion device, includes a plurality of extrusion mechanism (200), and is a plurality of extrusion mechanism (200) is the matrix arrangement, its characterized in that, extrusion mechanism (200) are including drive assembly (1), crowded material subassembly (2), first mounting panel (3) and second mounting panel (4), first mounting panel (3) with be provided with the interval space between second mounting panel (4), drive assembly (1) drives through gear assembly (5) crowded material subassembly (2) extrusion consumptive material, drive assembly (1) gear assembly (5) with crowded material subassembly (2) are followed the length direction in interval space set up side by side in first mounting panel (3) with between second mounting panel (4).

2. The extrusion device according to claim 1, wherein the extrusion mechanism further comprises a material changing assembly (6), the material changing assembly (6) is arranged at one side of the extrusion assembly (2) and can apply force to the extrusion assembly (2) to enable the consumable to be separated from the extrusion assembly (2).

3. The extrusion device according to claim 2, wherein the extrusion assembly (2) comprises a first extrusion gear (21) and a second extrusion gear (22), the first extrusion gear (21) and the second extrusion gear (22) are meshed and connected, the consumable is arranged at the non-meshed ends of the first extrusion gear (21) and the second extrusion gear (22), and the first extrusion gear (21) can be meshed and driven with the second extrusion gear (22) to extrude the consumable.

4. The extrusion device according to claim 3, wherein a first extrusion portion (211) is arranged along a circumferential direction of a non-meshing end of the first extrusion gear (21), a second extrusion portion (221) is arranged along a circumferential direction of a non-meshing end of the second extrusion gear (22), the first extrusion portion (211) and the second extrusion portion (221) are oppositely arranged, and the consumable material is arranged between the first extrusion portion (211) and the second extrusion portion (221).

5. The extrusion device according to claim 3, wherein the material changing assembly (6) comprises a material changing handle (61) and an elastic member (62), one end of the material changing handle (61) is rotatably connected with the first mounting plate (3) and/or the second mounting plate (4) and is fixedly connected with the second extrusion gear (22), and the elastic member (62) can be abutted with the material changing handle (61) to drive the second extrusion gear (22) to be meshed with the first extrusion gear (21); the material changing handle (61) rotates to compress the elastic piece (62) so as to drive the second material extruding gear (22) to be disengaged from the first material extruding gear (21).

6. Extrusion apparatus according to claim 5, wherein the change assembly (6) further comprises a first spring support (63) and a second spring support (64), the first spring support (63) being fixed to the first mounting plate (3) and/or the second mounting plate (4), the second spring support (64) being fixedly connected to the change handle (61), the spring (62) being arranged between the first spring support (63) and the second spring support (64), the change handle (61) being rotatable to compress the spring (62).

7. The extrusion device according to claim 1, wherein the gear assembly (5) comprises a first transmission gear (51) and a second transmission gear (52), the first transmission gear (51) is fixedly connected with the driving assembly (1), the first transmission gear (51) is meshed with the second transmission gear (52), and the second transmission gear (52) is meshed with the extrusion assembly (2) to drive the extrusion assembly (2) to extrude the consumable material.

8. Extrusion apparatus according to claim 7, wherein the diameter of the first transmission gear (51) is smaller than the diameter of the second transmission gear (52).

9. Extrusion apparatus according to claim 1, wherein the drive assembly (1) comprises a patch stepper motor (11), the patch stepper motor (11) being fixedly connected to the first mounting plate (3) or the second mounting plate (4).

10. The extrusion apparatus according to any one of claims 1 to 9, further comprising a plurality of profile holders (100), wherein the extrusion mechanism (200) is installed between two profile holders (100), and the plurality of extrusion mechanisms (200) are arrayed along the length direction of the profile holders (100); every two section bar supports (100) are in one group, and every two adjacent groups of section bar supports (100) are fixedly connected.

11. A 3D printer comprising the extrusion apparatus of any one of claims 1 to 10.