CN203974076U

CN203974076U - A kind of multiinjector 3D printer

Info

Publication number: CN203974076U
Application number: CN201420385424.XU
Authority: CN
Inventors: 熊刚; 沈震; 刘学
Original assignee: Cloud Computing Industry Technology Innovation and Incubation Center of CAS
Current assignee: Cloud Computing Industry Technology Innovation and Incubation Center of CAS
Priority date: 2014-07-11
Filing date: 2014-07-11
Publication date: 2014-12-03
Anticipated expiration: 2024-07-11

Abstract

The utility model relates to the technical field of 3D printing, in particular to a multi-nozzle 3D printer. The lower end of the feeding pipeline of the utility model is connected with a plurality of extruding nozzles with different inner diameters through the turntable, and the rotation of the turntable can be precisely controlled to select the extruding nozzles with a specific inner diameter at the working position; the inner channel of the extruding nozzle at the working position It forms an unobstructed working channel with the inner channel of the feeding pipeline, and then controls the actual spinning cross-sectional area of the nozzle; to control the printing speed and accuracy, and adapt to the different needs of different printing areas. The utility model can control the printing speed and precision, and improve the overall printing speed under the condition of ensuring the precision requirement; it can be applied to the nozzle structure and control of the 3D printer.

Description

A kind of multiinjector 3D printer

Technical field

The utility model relates to 3D printing technique field, especially a kind of multiinjector 3D printer.

Background technology

3D prints, and is, by software, 3D mathematical model is carried out to the processing of layering discretization, then uses powdery metal or the plastics etc. can adhesive material, by the mode of successively piling up, constructs entity.3D printing technique is that a kind of formula that adds is manufactured category, manufactures different from traditional formula that subtracts; Can better save raw materials for production.Towards personalized and specificity service, manufacturing under the promotion requiring, 3D prints and has started to be applied in the aspects such as mould generates, personalized product is produced, medical, military.Believe in the near future, 3D printer can be come into popular family, is our live and work service.

Common 3D printing technique has fuse deposition technique, it is by thread heat-fusible materials heating and melting, by the shower nozzle with a micro-channel, squeeze and gush out, from nozzle ejection, be deposited on workbench, temperature starts to solidify after lower than solidification temperature, and the accumulation layer by layer by material finally forms finished product.Shower nozzle is an one core component, and still, the material extrusion nozzle inside diameter cross sectional shape of existing 3D printer printing head only has fixing circle.Non-adjustable due to nozzle inside diameter area of section, cannot adjust the printing precision of 3D printer and speed by Control Nozzle area of section.Yet, in reality, for different printing purposes and different print areas, need different printing precision and speed.Even same model, also there is different required precisions at model inside and edge.

Summary of the invention

The technical problem that the utility model solves is that the 3D printer nozzle internal diameter cross sectional shape based on current is all circular, can not accomplish the present situation for different models or the print speed of same model zones of different and the control of precision, a kind of multiinjector 3D printer is provided, can regulates print speed and precision.

The technical scheme that the utility model solves the problems of the technologies described above is:

Include conveying pipeline; It is characterized in that: also include and connect a plurality of material extrusion nozzles that base, rotating disk and passage internal diameter vary in size, connect the lower end that base is fixed on conveying pipeline, rotating disk is arranged on the lower end that connects base, rotating disk can rotate with respect to connecting base around axle simultaneously, and the material extrusion nozzle that a plurality of passage internal diameters vary in size is installed on the lower end of rotating disk; Conveying pipeline, connection base, rotating disk and a certain material extrusion nozzle interior form material transmission channel; The material extrusion nozzle that forms passage by adjustment regulates and controls the sectional area that shower nozzle sprays silk.

In described connection base, be provided with motor, can drive dial rotation.

A plurality of material extrusion nozzles that passage internal diameter varies in size are removably evenly installed on the lower end of rotating disk.

Described connection base has the cylinder groove identical with conveying pipeline internal channel internal diameter size in the junction with conveying pipeline, rotating disk also has the cylinder groove identical with conveying pipeline internal channel internal diameter size at installation material extrusion nozzle place; An expedite material channel of the common formation of the internal channel of the material extrusion nozzle in working position and conveying pipeline internal channel.

The center of gravity of described material extrusion nozzle inner passage section shape and the center of gravity of conveying pipeline inner passage section shape are positioned on the same axle perpendicular to material extrusion nozzle and conveying pipeline inner passage section.

Connect base inside and contain heating element heater, the material of heating conveying Pipe transfer, is molten condition.

Beneficial effect:

The utility model is by controlling the rotation of motor, and then control material extrusion nozzle is with respect to the anglec of rotation of conveying pipeline; Thereby realize the control to the actual spray silk of nozzle sectional area; To control printing precision and the speed of printer.Can, for different printing purposes and different print areas, adjust different printing precision and speed.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is further illustrated:

Fig. 1 is the utility model nozzle cluster front view;

Fig. 2 is the utility model nozzle cluster left view;

Fig. 3 is the logic chart of the utility model print speed influence factor;

Fig. 4 is the utility model print speed regulator control system figure.

The specific embodiment

As shown in Figure 1, 2, the utility model printer head includes the material extrusion nozzle of conveying pipeline 801, connection base 803, rotating disk 804 and the big or small internal diameter passage of a plurality of difference.

Connect the lower end that base 803 is fixed on conveying pipeline 801, wherein connect base 803 inside and contain heating element heater, the material of heating conveying Pipe transfer, is molten condition.Rotating disk 804 is arranged on the lower end that connects base 803, and rotating disk can rotate with respect to connecting base 803 around axle simultaneously, connects in base 803 and includes motor, can drive the rotation of rotating disk 804.

The material extrusion nozzle 805,807,808 of the big or small internal diameter passage of a plurality of differences can removal be evenly installed on the lower end of rotating disk 804.By controlling the work rotary turnplate 804 of motor, select the material extrusion nozzle operation of concrete big or small internal diameter passage.Connecting base 803 has in the junction with conveying pipeline 801 and the same cylinder groove of big or small internal diameter of conveying pipeline internal channel 802, and rotating disk 804 also has and the same cylinder groove of big or small internal diameter of conveying pipeline internal channel 802 material extrusion nozzle place is installed simultaneously.Material extrusion nozzle in working position, as an expedite service aisle of material extrusion nozzle internal channel 806 and the 802 common formation of conveying pipeline internal channel, on the axle that wherein center of gravity of the center of gravity of material extrusion nozzle internal channel 806 cross sectional shapes and conveying pipeline internal channel 802 cross sectional shapes coexists perpendicular to material extrusion nozzle internal channel 806 cross sections and conveying pipeline internal channel 802 cross sections.

As shown in Figure 3,4, print speed regulate and control method is:

Print speed V=K*S*L; Wherein S is the sectional area of the actual spray silk of nozzle, and L is unit printing-forming area, and K is the constant relevant with printer;

The actual spray silk sectional area S of nozzle and the printing-forming area L of unit determine charging rate, and affect hot melt speed; Charging rate and hot melt speed determine print speed jointly;

A signal of change formation by S and L is controlled print speed, regulates and controls the charging rate of shower nozzle conveying pipeline;

Precision regulate and control method is: according to the different demands of printing precision, adjust print speed to control printing precision; Printing precision requires when high, and print speed is slow; Printing precision requires when low, and print speed is fast.

The utility model, by accurately controlling the rotation of motor, selects the material extrusion nozzle of concrete big or small internal diameter in working position.Because the work translational speed size of shower nozzle is constant, constant for guaranteeing every layer of Z axis forming height, regulate and control in real time the charging rate of conveying pipeline 801, this charging rate is directly proportional to the passage internal diameter size of material extrusion nozzle in working position.For the application of different printing precision demands, can answer the material extrusion nozzle of big or small internal diameter in working position by rotating photo.

Claims

1. A multi-nozzle 3D printer, comprising a material delivery pipeline; characterized in that: it also includes a connecting base, a turntable and a plurality of extrusion nozzles with different inner diameters of the channel, the connecting base is fixed on the lower end of the material delivery pipeline, The turntable is installed at the lower end of the connection base, and the turntable can rotate around the axis relative to the connection base. Multiple extrusion nozzles with different channel inner diameters are installed at the lower end of the turntable; the feeding pipeline, the connection base, the turntable and a certain extrusion nozzle A material transmission channel is formed inside; the cross-sectional area of the spray nozzle is regulated by adjusting the extruding nozzle forming the channel.

2. The multi-nozzle 3D printer according to claim 1, characterized in that: the connecting base is provided with a motor, which can drive the turntable to rotate.

3. The multi-nozzle 3D printer according to claim 1, wherein a plurality of extruding nozzles with different channel inner diameters are detachably and evenly installed on the lower end of the turntable.

4. The multi-nozzle 3D printer according to claim 2, wherein a plurality of extrusion nozzles with different channel inner diameters are detachably and evenly installed on the lower end of the turntable.

5. The multi-nozzle 3D printer according to any one of claims 1 to 4, characterized in that: the connecting base has a cylinder with the same inner diameter as the inner channel of the feeding pipeline at the connection with the feeding pipeline Groove, the turntable also has a cylindrical groove with the same inner diameter as the inner channel of the delivery pipeline at the place where the extrusion nozzle is installed; the inner channel of the extrusion nozzle in the working position and the inner channel of the delivery pipeline form an unobstructed material channel.

6. The multi-nozzle 3D printer according to claim 5, characterized in that: the center of gravity of the cross-sectional shape of the channel in the extrusion nozzle and the center of gravity of the cross-sectional shape of the channel in the delivery pipeline are located perpendicular to the extrusion nozzle and the delivery On the same axis of the channel section in the pipeline.

7. The multi-nozzle 3D printer according to any one of claims 1 to 4, characterized in that: the connection base contains a heating element inside to heat the material transported by the material delivery pipeline to make it in a molten state.

8. The multi-nozzle 3D printer according to claim 5, characterized in that: the connection base contains a heating element inside to heat the material transported by the material delivery pipeline to make it in a molten state.

9. The multi-nozzle 3D printer according to claim 6, characterized in that: the connection base contains a heating element inside to heat the material transported by the material delivery pipeline to make it in a molten state.