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3D printer

A 3D printer and printing device technology, applied in 3D object support structure, additive manufacturing, processing heating elements, etc., can solve the problems of cooling volume shrinkage, slow cooling speed, collapse of finished parts, etc., to achieve perfect device, high processing accuracy, Strong linkage effect

Active Publication Date: 2021-06-15
深圳市俩棵树科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a 3D printer, which solves the problems in the prior art that the printed material of the 3D printer is cooled after thermal expansion, the cooling volume shrinks, the cooling speed is too slow to cause the deformation of the finished part, and the volume change of the melted material leads to the collapse of the finished part.

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0041] refer to Figure 1-5 , the present invention provides a 3D printer, comprising a bottom frame 1, a plurality of sets of vertical frames 2 are arranged on the top of the bottom frame 1, a top frame 3 is arranged between any two vertical frames 2, and the top frame 3 is controlled by the Y axis The device is provided with a crossbeam 4, and the Y-axis controller includes a first stepping motor 5, which is fixedly connected with a certain vertical frame 2, and the output end of the first stepping motor 5 is provided with a first conveyor belt 6, and the first stepping motor 5 is fixedly connected with a vertical frame 2. The ends of a conveyor belt 6 are equipped with a conveyor belt tensioner, two symmetrically distributed top frames 3 are provided with slide rails 31 at the bottom, the two slide rails 31 are slidingly connected to a crossbeam 4, and the bottom of the crossbeam 4 is provided with a drive wheel 9 , the first conveyor belt 6 bypasses the transmission wheel ...

no. 2 example

[0047] Based on the 3D printer provided in the first embodiment, the 3D printing work can be completed and the required printed parts can be obtained. However, in the actual use process, due to the thermal expansion phenomenon of the printing material, that is, under the condition of constant external pressure, the temperature of the molten material The larger the value, the greater the volume change after cooling, so the volume of the molten material flowing out of the nozzle 15 will shrink after cooling and solidifying on the top of the magnetic hot plate 26, resulting in a change in the shape of the printed piece, or even excessive shrinkage of the printed piece. Assembly causes damage, thereby greatly reducing yield, to solve this problem, combine the Figure 6-11 , the 3D printer also includes: a temperature sensor is provided inside the flow chamber 32 to detect its internal temperature, and the thermal expansion volume increase value of the printing material is indirectl...

no. 3 example

[0052] At the same time, when a certain layer of the finished product is printed and needs to be printed next time, the height of the nozzle 15 does not change, and the bottom plate 24 is driven down by the third stepping motor 21 during the descent process, because the magnetic hot plate 26 There is a temperature difference at the top of the nozzle, so the volume of the molten material flowing out along the nozzle 15 is different, and the height of the molten material flowing down is different according to the volume. If the gap between the nozzle 15 and the finished product is too small compared with the height of the molten material flowing down, the molten material will block the nozzle 15 and cause major safety accidents. In order to avoid this situation, a certain When the layer is printed and the next printing is performed, the third stepper motor 21 will drive the screw rod 22 to rotate more times than before, thereby driving the bottom plate 24 to descend synchronously...

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PUM

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Abstract

The invention relates to the technical field of printing equipment, in particular to a 3D printer which comprises a bottom frame. Multiple sets of vertical frames are arranged at the top of the bottom frame, a top frame is arranged between any two vertical frames, a cross beam is arranged between the top frames through a Y-axis controller, and an X-axis controller on the outer surface of the cross beam is slidably connected with a printing device; and a bottom plate is arranged at one side of each top frame through a Z-axis controller, the printing device comprises a booster, a raw material pipe is slidably connected into the booster, a heating cavity is formed in the bottom of the booster, the bottom of the heating cavity communicates with a flowing cavity, and a temperature sensor is arranged in the flowing cavity and used for detecting the internal temperature of the flowing cavity. According to the 3D printer, the current value of an electromagnet is controlled to change a gap between a heat-resistant magnetic ball and a spray head and change the volume of a molten material flowing out of the spray head, the material thermal expansion principle is combined, the material volume is increased when the temperature rises, the needed shape and volume are obtained after cooling, the printing effect is good, and the printing precision is high.

Description

technical field [0001] The invention relates to the technical field of printing equipment, in particular to a 3D printer. Background technique [0002] 3D Printers (3D Printers) for short (3DP) is a magical printer designed by an inventor named Enrico Dini, which can not only "print" a complete building, but even Print the shape of any desired item in the spaceship for the astronauts. But what 3D prints out is the model of the object, not the function of the object. [0003] The 3D printers that exist at this stage mostly use materials such as plastics, metals, ceramics, and rubber-like substances as printing media. During the specific use process, these materials are first melted into liquid in the melting tank, and then processed on the magnetic hot plate through the nozzle. Stacking is plastic, but due to the thermal expansion principle of the material, the volume of the liquid material will shrink after solidification in a low temperature environment, thereby reducing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/20B29C64/232B29C64/236B29C64/295B29C64/393B29C64/30B29C35/16B33Y30/00B33Y40/00B33Y50/02
CPCB29C35/16B29C2035/1683B33Y30/00B33Y40/00B33Y50/02B29C64/20B29C64/232B29C64/236B29C64/295B29C64/30B29C64/393
Inventor 白万涛
Owner 深圳市俩棵树科技有限公司
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