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Printing device and method based on fused-molding injection

A printing device, fusion molding technology, applied in coating devices, manufacturing auxiliary devices, additive manufacturing, etc., can solve the problem of difficult to achieve printing of various materials with different properties

Inactive Publication Date: 2018-01-05
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned droplet ejection technology is generally used for the distribution of a specific material, and it is difficult to realize the printing of a variety of materials with different properties

Method used

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  • Printing device and method based on fused-molding injection
  • Printing device and method based on fused-molding injection

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Example 1: The parameters are set as follows during the printing process:

[0037] The frequency of the high-frequency solenoid valve is 120Hz, the diameter of the nozzle is 0.20mm, the temperature of the cavity is 100°C, the printing speed is 80mm / s, and the gas pressure is 40kPa, and then printed according to the specific printing operation method image 3 The first layer trajectory of the model is as Figure 4 shown.

example 2

[0038] Example 2: The parameters are set as follows during the printing process:

[0039] The frequency of the high-frequency solenoid valve is 110Hz, the nozzle diameter is 0.20mm, the temperature of the cavity is 100°C, the printing speed is 80mm / s, and the gas pressure is 40kPa, and then printed according to the specific printing operation method in Example 1 image 3 The first layer trajectory of the model is as Figure 5 shown.

example 3

[0040] Example 3: The parameters are set as follows during the printing process:

[0041]The frequency of the high-frequency solenoid valve is 80Hz, the nozzle diameter is 0.20mm, the temperature of the cavity is 100°C, the printing speed is 80mm / s, and the gas pressure is 40kPa, and then printed according to the specific printing operation method in Example 1 image 3 The first layer trajectory of the model is as Image 6 shown.

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Abstract

The invention relates to a printing device and method based on fused-molding injection. A heater in a spray head system of the device is mounted in an accommodating chamber; a temperature sensor is arranged at the bottom of the accommodating chamber, is connected with the heater by a computer, and is used for controlling and adjusting a heating temperature of the accommodating chamber and feedingback and adjusting a power of the heater by three-dimensional printing software; a nitrogen bottle of the control system is connected with a gas inlet in an upper end of the accommodating chamber by an electromagnetic valve; the nitrogen bottle provides gas with a certain pressure for the accommodating chamber as the power by the electromagnetic valve; a pulse generator is connected with the electromagnetic valve by a relay; a signal generated by the pulse generator controls an on-off state of the electromagnetic valve under action of the relay, so as to control the flow of the gas entering the accommodating chamber and the ventilation time. The printing device and method provided by the invention improves an extrusion manner used for traditional fused deposition printing to pneumatic injection printing and can better control printing quantity. The device provided by the invention is easy to operate and low in cost, and can expand a range of printing materials by adjusting various parameters of printing.

Description

technical field [0001] The invention relates to a fused deposition three-dimensional printing device, in particular to a device for printing paraffin wax materials using a pneumatic fused deposition technology, belonging to the technical field of fused deposition three-dimensional printing. Background technique [0002] Although paraffin wax has no fixed melting point, the melting temperature of paraffin wax is generally lower than 100°C, and the price is relatively low. At present, it is mainly used to make wax patterns in the lost foam process, and it is widely used in lost foam casting and precision casting. , has a certain value. [0003] Paraffin wax has a low viscosity after melting, and traditional melt molding is not good for printing these low-viscosity materials. Therefore, on the basis of traditional fused deposition technology, printing can be realized by using a droplet jetting system. The droplet jetting technology mainly includes continuous Injection (continu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B29C64/112B29C64/209B29C64/393B33Y30/00B33Y50/02
Inventor 董行行王操赵喆姜炎林
Owner SHANGHAI INST OF TECH
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