A 3D printing high-speed feeding device

Abstract

The present invention relates to the field of 3D printing technology, and specifically refers to a 3D printing high-speed feeding device; it includes a base and a servo motor, the servo motor is fixedly connected to the rear side of the base, and a transmission gear connected to the output shaft of the servo motor is provided on the front side of the base; two driving wheels are symmetrically arranged on both sides of the transmission gear, the two driving wheels are respectively rotationally connected to the base through rotating shafts, and driven gears meshing with the transmission gear are provided on the driving wheels; an adjusting device is provided at the upper end of the base, and pressing wheels respectively cooperating with the two driving wheels are provided on the adjusting device; the structure of the present invention is reasonable, the friction coefficient between the driving wheel and the pressing wheel can be quickly adjusted through the adjusting handle, and the feeding friction force is increased by two groups of synchronous driving wheels and pressing wheels, the phenomenon of feeding slippage can be effectively prevented, and the feeding speed is increased to ensure the printing efficiency and quality.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly to a 3D printing high-speed feeding device. Background Art

[0002] 3D printing (3DP) is a kind of rapid prototyping technology. It is a technology that constructs objects by layer-by-layer printing based on digital model files, using powdered metals, plastics, or other bondable materials. 3D printing is usually achieved by using digital technology material printers; it is often used in the fields of mold manufacturing, industrial design, etc. to manufacture models, and then gradually used for the direct manufacturing of some products. There are already parts printed using this technology.

[0003] During the printing process of a 3D printer, the spraying material needs to go through processes such as rapid heating, spraying and shaping, and rapid cooling. Currently, the feeding device of a 3D printer generally uses a driving wheel and a driven wheel to press a circular consumable to feed the material by using friction. There is only point and linear contact between the consumable and the feeding wheel, and the contact area is very small, resulting in limited friction. When the resistance during the feeding process is too large, sliding is likely to occur between the material and the feeding wheel, which affects the printing accuracy and also restricts the printing efficiency. Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0004] The purpose of the present invention is to provide a 3D printing high-speed feeding device with reasonable structure, good stability, and capable of effectively improving the printing efficiency in view of the defects and deficiencies of the existing technology.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A 3D printing high-speed feeding device according to the present invention includes a base and a servo motor. The servo motor is fixedly connected to the rear side of the base, and a transmission gear connected to the output shaft of the servo motor is provided on the front side of the base; two driving wheels are symmetrically provided on both sides of the transmission gear, and the two driving wheels are respectively rotationally connected to the base through rotating shafts. A driven gear meshing with the transmission gear is provided on the driving wheel; an adjusting device is provided at the upper end of the base, and pressing wheels respectively cooperating with the two driving wheels are provided on the adjusting device.

[0007] According to the above solution, the adjusting device includes two adjusting blocks, the two adjusting blocks are respectively connected to the base in a matching manner, the two pressing wheels are correspondingly provided above the driving wheels, and the two pressing wheels are respectively rotationally connected to the corresponding adjusting blocks through rotating shafts.

[0008] According to the above solution, a guiding strip is provided on the front side of the base, and the two adjusting blocks and their pressing wheels are symmetrically provided on both sides of the guiding strip; an adjusting handle is provided at the upper end of the guiding strip, and the adjusting handle is respectively connected to the two adjusting blocks in a matching manner.

[0009] According to the above solution, the adjusting block is of a triangular structure. The extrusion wheel is connected to the bottom corner end of the adjusting block through a rotating shaft, and one of the top corner ends of the adjusting block is fixedly connected to the base through a rotating shaft; the adjusting handle is cooperatively connected to the other top corner ends of the two adjusting blocks.

[0010] According to the above solution, guiding blocks are provided on both side edges of the front side of the base; a material conveying port is provided on the guiding block; a material conveying port is also provided at the lower end of the guiding strip, and the three material conveying ports are all on a linear feeding channel and the feeding channel is tangent to the outer edges of the two driving wheels.

[0011] The beneficial effects of the present invention are as follows: The structure of the present invention is reasonable. The friction coefficient between the driving wheel and the extrusion wheel can be quickly adjusted through the adjusting handle. The feeding friction is increased through two groups of synchronous driving wheels and extrusion wheels, which can effectively prevent the feeding slipping phenomenon, improve the feeding speed, and thus ensure the printing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0013] In the figure:

[0014] 1. Base; 2. Servo motor; 3. Driving wheel; 11. Guiding strip; 12. Guiding block; 13. Material conveying port; 14. Adjusting block; 15. Adjusting handle; 21. Driving gear; 31. Driven gear; 32. Extrusion wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solution of the present invention will be described below in conjunction with the drawings and embodiments.

[0016] As Figure 1 shown, a 3D printing high-speed feeding device of the present invention includes a base 1 and a servo motor 2. The servo motor 2 is fixedly connected to the rear side of the base 1. A driving gear 21 connected to the output shaft of the servo motor 2 is provided on the front side of the base 1; two driving wheels 3 are symmetrically provided on both sides of the driving gear 21. The two driving wheels 3 are respectively rotationally connected to the base 1 through rotating shafts, and a driven gear 31 meshing with the driving gear 21 is provided on the driving wheel 3; an adjusting device is provided at the upper end of the base 1, and an extrusion wheel 32 respectively cooperating with the two driving wheels 3 is provided on the adjusting device; the servo motor 2 drives the two driving wheels 3 to rotate through the driving gear 21 on the output shaft. The cooperation gap between the extrusion wheel 32 and the driving wheel 3 forms a feeding channel. The spraying material is extruded and output under the action of friction. The extrusion wheel 32 can change its gap with the driving wheel 3 through the adjusting device, so as to adjust the friction force through the change of the extrusion stress, ensure that the spraying material does not slip under the high-speed printing state, and ensure the 3D printing efficiency and quality.

[0017] The adjusting device includes two adjusting blocks 14, which are respectively connected to the base 1 in a cooperative manner. Two pressing wheels 32 are correspondingly arranged above the driving wheel 3, and the two pressing wheels 32 are respectively rotatably connected to the corresponding adjusting blocks 14 through rotating shafts. The adjusting block 14 is used to install and adjust the pressing wheel 32. By adjusting the position of the adjusting block 14 relative to the driving wheel 3, the gap between the pressing wheel 32 and the driving wheel 3 is changed, so as to achieve the friction coefficient between the plastic spraying and the feeding device.

[0018] A guiding strip 11 is arranged on the front side surface of the base 1. The two adjusting blocks 14 and their pressing wheels 32 are symmetrically arranged on both sides of the guiding strip 11. An adjusting handle 15 is arranged at the upper end of the guiding strip 11. The adjusting handle 15 is respectively connected to the two adjusting blocks 14 in a cooperative manner. The guiding strip 11 is used to install the adjusting handle 15. The adjusting handle 15 can adopt various mechanisms such as screw pressure regulation type, rack type or flange pressure regulation that can drive the adjusting block 14 to act. Preferably, a screw rod and a spring are arranged between the adjusting handle 15 and the guiding strip 11 in the present invention. The spiral movement of the adjusting handle 15 can change the gap between the pressing wheel 32 on the adjusting block 14 and the driving wheel 3.

[0019] The adjusting block 14 is of a triangular structure. The pressing wheel 32 is connected to the bottom corner end of the adjusting block 14 through a rotating shaft. One of the vertex ends of the adjusting block 14 is fixedly connected to the base 1 through a rotating shaft. The adjusting handle 15 is connected to the other vertex end of the two adjusting blocks 14 in a cooperative manner. One of the vertex ends of the adjusting block 14 is hinged to the base 1 as a hinge fulcrum. The rotation of the adjusting block 14 on the base 1 will drive the pressing wheel 32 to move up and down, so as to change the gap gear between the pressing wheel 32 and the driving wheel 3. Since the movement track of the pressing wheel 32 is a circumferential movement relative to the other vertex end of the adjusting block 14, the adjusting block 14 can achieve the refinement of the pressure regulation accuracy under the rotary pressing drive of the adjusting handle 15.

[0020] Guiding blocks 12 are arranged on both side edges of the front side surface of the base 1. A material passing port 13 is arranged on the guiding block 12. A material passing port 13 is also arranged at the lower end of the guiding strip 11. The three material passing ports 13 are all on the linear feeding channel and the feeding channel is tangent to the outer edges of the two driving wheels 3.

[0021] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A 3D printing high-speed feeding device, comprising a base (1) and a servo motor (2), characterized in that: The servo motor (2) is fixedly connected to the rear side of the base (1), and a transmission gear (21) connected to the output shaft of the servo motor (2) is provided on the front side of the base (1); two driving wheels (3) are symmetrically arranged on both sides of the transmission gear (21), and the two driving wheels (3) are respectively rotationally connected to the base (1) through rotating shafts, and a driven gear (31) meshing with the transmission gear (21) is provided on the driving wheel (3); an adjusting device is provided at the upper end of the base (1), and pressing wheels (32) respectively cooperating with the two driving wheels (3) are provided on the adjusting device; The adjusting device includes two adjusting blocks (14), the two adjusting blocks (14) are respectively connected to the base (1) in a matching manner, the two pressing wheels (32) are correspondingly arranged above the driving wheels (3), and the two pressing wheels (32) are respectively rotationally connected to the corresponding adjusting blocks (14) through rotating shafts; A guiding strip (11) is provided on the front side of the base (1), and the two adjusting blocks (14) and their pressing wheels (32) are symmetrically arranged on both sides of the guiding strip (11); an adjusting handle (15) is provided at the upper end of the guiding strip (11), and the adjusting handle (15) is respectively connected to the two adjusting blocks (14) in a matching manner; The adjusting block (14) is of a triangular structure, the pressing wheel (32) is connected to the bottom corner end of the adjusting block (14) through a rotating shaft, and one of the top corner ends of the adjusting block (14) is fixedly connected to the base (1) through a rotating shaft; the adjusting handle (15) is connected to the other top corner ends of the two adjusting blocks (14) in a matching manner; Guiding blocks (12) are provided on both side edges of the front side of the base (1), and a material passing port (13) is provided on the guiding block (12); a material passing port (13) is also provided at the lower end of the guiding strip (11), and the three material passing ports (13) are all on a linear feeding channel and the feeding channel is tangent to the outer edges of the two driving wheels (3).

Images