CN211054410U

CN211054410U - 3D printer

Info

Publication number: CN211054410U
Application number: CN201921295295.4U
Authority: CN
Inventors: 白海清; 秦望; 贾仕奎; 张奇锋; 曹乐
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-07-21
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a 3D printer, which comprises a base, the upper surface of base is fixedly connected with the guide stand column, the guide stand column is provided with a fixing component, a feeding system and a material spraying system for spraying and printing, the material spraying system is fixedly connected on the fixing component, the feeding system is connected with the fixing component and is used for controlling the fixing component to move along the guide stand column, and the fixing component further drives the material spraying system to move along the guide stand column; the jetting system includes a spiral feed assembly for transporting printing stock. The utility model discloses a 3D printer, through setting up spiral feeding subassembly, it prints raw and other materials can be single or the powdery or granular material who mixes, can effectively solve the problem that the raw and other materials limitation is big of printing.

Description

3D printer

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printer.

Background

A 3D printer, also called a three-dimensional printer (3DP), is an additive manufacturing technique, i.e. a rapid prototyping technique, which uses a digital model file as a basis, and applies a special adhesive material, such as wax, powdered metal or plastic, to manufacture a three-dimensional object by printing the adhesive material layer by layer. 3D printing technology is often used to make models in the fields of industrial design, mold manufacturing, etc., and is now increasingly popular in the direct manufacturing of some products. The principle of the 3D printer is that data and raw materials are put into the 3D printer, and the machine can build the product layer by layer according to the program. However, the 3D printer in the prior art generally has the problem that the limitation of printing raw materials is large, and the requirement on the shape of the printing raw materials is severe.

Disclosure of Invention

The invention aims to provide a novel technical scheme of a 3D printer.

The invention adopts a technical scheme that:

A3D printer comprises a base, wherein a guide upright post is fixedly connected to the upper surface of the base, a fixing assembly, a feeding system and a material spraying system for spraying and printing are arranged on the guide upright post, the material spraying system is fixedly connected to the fixing assembly, the feeding system is connected with the fixing assembly and used for controlling the fixing assembly to move along the guide upright post, and the fixing assembly further drives the material spraying system to move along the guide upright post; the jetting system includes a spiral feed assembly for transporting printing stock.

Optionally, the feeding system includes a servo motor, a ball screw and a rolling guide rail, the servo motor is connected to the ball screw, the ball screw is connected to the rolling guide rail in a matching manner, and the servo motor controls the ball screw to rotate so that the rolling guide rail makes linear motion along the ball screw.

Optionally, the fixing assembly includes a supporting plate, a first supporting member and a second supporting member, the supporting plate is fixedly connected to the rolling guide, and the surface of the supporting plate away from the base is provided with the first supporting member and the second supporting member relatively.

Optionally, the material spraying system comprises a cylinder, two ends of the cylinder are respectively and fixedly connected with the first supporting piece and the second supporting piece, the cylinder is provided with a feed port, and the spiral feeding assembly is located in the cylinder and is communicated with the feed port.

Optionally, the screw feed assembly is a tapered twin screw.

Optionally, the spiral feeding assembly further comprises a speed reduction motor, a first coupler, a transmission control box and second couplers, wherein the speed reduction motor is connected with the first coupler, the first coupler is connected with the two second couplers through the transmission control box, and the two second couplers are respectively connected with the two screws of the gradually-changed twin screws.

Optionally, an ultrasonic vibration device and a heater are arranged on the cylinder.

Optionally, the material spraying system further comprises a spray head assembly, the spray head assembly comprises an outer joint, a steering elbow and a nozzle, one side, far away from the machine barrel, of the first supporting piece is connected with the outer joint, the first end of the steering elbow is connected with the outer joint, the other end of the steering elbow is bent to the direction opposite to the base, and the nozzle is connected to the end head of the other end of the steering elbow.

Optionally, the 3D printer further includes a table disposed on the upper surface of the base and movable in the plane of the base, the table being located directly below the nozzle.

Optionally, the workbench is made of electrically heated glass.

Compared with the prior art, the 3D printer has the advantages that the spiral feeding assembly is arranged, the printing raw materials can be single or mixed powder or granular materials, and the problem of large limitation of the printing raw materials can be effectively solved.

Drawings

FIG. 1 is a schematic diagram of a front view structure of a 3D printer according to the present invention;

fig. 2 is a schematic top view of a 3D printer according to the present invention.

In the drawing, 1, a base, 2, a guide upright post, 3, a support plate, 4, a speed reducing motor, 5, a first coupling, 5', a second coupling, 6, a transmission control box, 7, a second support piece, 8, a feeding system, 9, a machine barrel, 10, a first support piece, 11, an outer joint, 12, a steering elbow, 13, a nozzle, 14, a workbench, 15, an X-direction feeding system, 16, a Y-direction feeding system, 17, an ultrasonic vibration device, 18, a gradual-change type double screw, 19, a heater and 20 are provided with a feeding hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a 3D printer, as shown in figure 1, which comprises a base 1, wherein a guide upright post 2 is fixedly connected to the upper surface of the base 1, specifically, the guide upright post 2 can be installed at one side position of the upper surface of the base 1, a fixing component, a feeding system 8 and a material spraying system for spraying and printing are arranged on the guide upright post 2, the material spraying system is fixedly connected to the fixing component, the feeding system 8 is connected with the fixing component and is used for controlling the fixing component to move along the guide upright post 2, the fixing component further drives the material spraying system to move along the guide upright post 2, and the material spraying system can move back and forth along a straight line close to or far away from the base 1 through the feeding system 8 as required; spout the material system including the spiral feeding subassembly that is used for carrying the printing raw materials, the spiral feeding subassembly can guarantee the high efficiency that the printing raw materials carried, solves among the prior art not enough, the great problem of raw and other materials type limitation of 3D printer raw materials transport capacity.

In one embodiment, the feeding system 8 comprises a servo motor, a ball screw and a rolling guide rail, the servo motor is arranged at the top of the guide upright 2, the ball screw is connected with the servo motor, the ball screw is connected with the rolling guide rail in a matching way, and the servo motor controls the ball screw to rotate so that the rolling guide rail makes linear motion along the ball screw; the ball screw converts the rotary motion into linear motion, and the motion precision is very high.

In one embodiment, the fixing assembly comprises a supporting plate 3, a first supporting member 10 and a second supporting member 7, the supporting plate 3 is fixedly connected with the rolling guide rail, the first supporting member 10 and the second supporting member 7 are oppositely connected to the surface of the supporting plate 3 far away from the base 1 by screws, and the supporting plate 3 can move up and down in a translational mode through the rolling guide rail, so that the movement is flexible and stable.

In one embodiment, the material spraying system comprises a machine barrel 9, two ends of the machine barrel 9 are fixedly connected with a first support 10 and a second support 7 respectively, a feed port 20 is formed in the machine barrel 9, the spiral feeding assembly is positioned in the machine barrel 9 and is communicated with the feed port 20, furthermore, the spiral feeding assembly is a gradually-changed double screw 18, printing raw materials are fed into the machine barrel 9 from the feed port 20 and are conveyed through the positive displacement of the gradually-changed double screw 18, and the gradually-changed double screw 18 has the function of forcibly pushing the materials forwards and then conveys the materials forwards through the relative movement of the double screws and the machine barrel 9. The inner surface of the machine barrel 9 is coated with a lubricating and anti-sticking material so as to reduce the resistance of the material in the extrusion conveying process and ensure the constant temperature and smoothness of the material in the extrusion conveying process.

In one embodiment, the spiral feeding assembly further comprises a speed reducing motor 4, a first coupler 5, a transmission control box 6 and a second coupler 5 ', wherein the speed reducing motor 4 is connected with the first coupler 5, the first coupler 5 is connected with two second couplers 5 ' through the transmission control box 6, and the two second couplers 5 ' are respectively connected with two screws of the gradually-changed twin screw 18.

In one embodiment, the barrel 9 is provided with an ultrasonic vibration device 17 and a heater 19, and the heater 19 may be a ceramic heater, for example; the heating of the heater 19 and the extrusion friction effect of the machine barrel 9 can effectively melt the printing raw material particles, and the ultrasonic vibration device 17 can effectively promote the uniform stirring of the materials.

In one embodiment, the material spraying system further comprises a nozzle assembly, the nozzle assembly comprises an outer joint 11, a turning elbow 12 and a nozzle 13, one side of the first support 10, which is far away from the machine barrel 9, is connected with the outer joint 11, a flow distribution plate is arranged inside the outer joint 11, a first end of the turning elbow 12 is connected with the outer joint 11, the other end of the turning elbow 12 is bent to face the direction of the base 1, and the nozzle 13 is connected at the end head of the other end of the turning elbow 12. The steering elbow 12 is a double-layer hollow pipeline, oily liquid is filled in a hollow interlayer of the steering elbow 12, the steering elbow can well preserve heat of molten printing raw materials, and molten particles are extruded out from the nozzle 13 through the steering action of the steering elbow 12.

In one embodiment, the 3D printer further comprises a table 14 disposed on the upper surface of the base 1 and movable in the plane of the base 1, the table 14 being located at a position directly below the nozzle 13. The lower surface of the workbench 14 is provided with a leveling device, the workbench 14 is arranged on a mounting plate through a damping spring mechanism, the mounting plate is provided with an X-direction feeding system 15 and a Y-direction feeding system 16, the two feeding systems can control the workbench 14 to stably feed in the X-axis direction and the Y-axis direction of the base 1, and a material spraying system controlled by a feeding system 8 feeds along the Z-axis of the guide upright post 2, so that efficient printing is completed through the three-axis feeding control.

In one embodiment, the workbench 14 is made of electrically heated glass, and the problems of bending and edge warping of the printing model and the like can be effectively solved by using the electrically heated glass as the workbench.

The 3D printer can effectively solve the problem of large limitation of printing raw materials, the printing raw materials can be single or mixed powder or granular materials, and because the feeding mode adopts double-screw extrusion, the stability of the quality of a printing model is determined by the gradually-changed double-screw and the nozzle assembly, the problems of low printing precision, rough surface, easy nozzle blockage and the like are effectively solved; the workbench adopts special electric heating glass, and the electric heating glass which is economical, practical and controllable in temperature can effectively solve the problems of bending and edge warping of the printing model and the like; the ultrasonic vibration device can effectively promote the uniform stirring of materials, improves the printing quality, and is simple in operation and convenient to use.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The 3D printer is characterized by comprising a base (1), wherein a guide upright post (2) is fixedly connected to the upper surface of the base (1), a fixing assembly, a feeding system (8) and a spraying system for spraying and printing are arranged on the guide upright post (2), the spraying system is fixedly connected to the fixing assembly, the feeding system (8) is connected with the fixing assembly and used for controlling the fixing assembly to move along the guide upright post (2), and the fixing assembly further drives the spraying system to move along the guide upright post (2); the material spraying system comprises a spiral feeding assembly for conveying printing raw materials; the screw feeding component is a graded twin screw (18); the spiral feeding assembly further comprises a speed reducing motor (4), a first coupler (5), a transmission control box (6) and second couplers (5 '), wherein the speed reducing motor (4) is connected with the first coupler (5), the first coupler (5) is connected with the two second couplers (5 ') through the transmission control box (6), and the two second couplers (5 ') are respectively connected with two screws of the gradually-changed twin screws (18).

2. The 3D printer according to claim 1, wherein the feeding system (8) comprises a servo motor, a ball screw and a rolling guide rail, the servo motor is connected with the ball screw, the ball screw is connected with the rolling guide rail in a matching way, and the servo motor controls the ball screw to rotate so that the rolling guide rail moves linearly along the ball screw.

3. The 3D printer according to claim 2, characterized in that the fixing component comprises a support plate (3), a first support member (10) and a second support member (7), the support plate (3) is fixedly connected with the rolling guide, and the first support member (10) and the second support member (7) are oppositely arranged on the surface of the support plate (3) far away from the base (1).

4. The 3D printer according to claim 3, wherein the material spraying system comprises a cylinder (9), two ends of the cylinder (9) are fixedly connected with the first support member (10) and the second support member (7), respectively, the cylinder (9) is provided with a feed port (20), and the spiral feeding assembly is located in the cylinder (9) and is communicated with the feed port (20).

5. A3D printer according to claim 4, characterised in that the barrel (9) is provided with ultrasonic vibration means (17) and a heater (19).

6. The 3D printer according to claim 4, characterized in that the material spraying system further comprises a nozzle assembly, the nozzle assembly comprises an outer joint (11), a turning elbow (12) and a nozzle (13), one side of the first support member (10) away from the cylinder (9) is connected with the outer joint (11), a first end of the turning elbow (12) is connected with the outer joint (11), the other end of the turning elbow (12) is bent to face the base (1), and the nozzle (13) is connected at the end of the other end of the turning elbow (12).

7. A3D printer according to claim 6, characterized in that the 3D printer further comprises a table (14) arranged on the upper surface of the base (1) and movable in the plane of the base (1), the table (14) being located directly below the nozzle (13).

8. The 3D printer according to claim 7, characterized in that the material of the table (14) is electrically heated glass.