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A detachment device and method based on an adsorption chamber

An adsorption chamber and release technology, which is used in manufacturing auxiliary devices, additive manufacturing, processing platforms/substrates, etc., can solve the heat dissipation of polymerization reaction. There is no effective solution, equipment reliability and printing speed need to be improved, Reduce the life and light transmission performance of the release film, and achieve the effect of reducing the possibility of deformation or detachment, improving the printing accuracy and increasing the pressure

Active Publication Date: 2021-06-25
YUANZHI TECH SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the roller rolls on the lower surface of the release film to separate the release film from the curing model, and then lift the platform to completely separate the curing model from the release surface, and let the photosensitive resin flow back to fill, then due to the number of layers in the printing process, The release film is repeatedly rolled and rubbed by the rollers, which will reduce the life and light transmission performance of the release film, and the scanning rolling process of the rollers also takes a relatively long time, and increases the mobile drive mechanism of the rollers, increasing the complexity of the mechanism. In addition, the up and down reciprocating movement of the platform is generally required to separate and reflow the resin. The reliability of the equipment and the printing speed need to be improved.
Moreover, these release methods do not provide an effective solution to the heat dissipation of the heat generated by the polymerization reaction during the printing process.

Method used

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  • A detachment device and method based on an adsorption chamber
  • A detachment device and method based on an adsorption chamber
  • A detachment device and method based on an adsorption chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] figure 1 A light-curing three-dimensional printing device is illustrated, which includes a liquid tank 2 , and the liquid tank 2 includes a liquid tank body 21 , a light-transmitting release part, a support plate 35 and a support ring 26 . The release part in this embodiment adopts the release film 33, the release film 33 shown in the figure is arranged at the bottom of the liquid tank body 21, and the working tank (or called the working chamber) formed by the release film 33 and the liquid tank body 21 is equipped with Photosensitive material 5. The support ring 26 is disposed between the release film 33 and the support plate 35 , the upper surface of the support ring 26 may be in contact with the release film 33 , and the lower surface of the support ring 26 may be in contact with the support plate 35 . The release film 33, the support ring 26 and the support plate 35 form a sealed adsorption chamber 38, and the support ring 26 can be integrated into the support plat...

Embodiment 2

[0054] Figure 6 to Figure 8 Suggesting that the opening 28 communicated with the adsorption cavity is arranged at a low place as far as possible, for example Image 6 It is indicated that the opening is set at the lowermost position of the support ring 26, Figure 7 It is indicated that the first opening 28 - 1 or the second opening 28 - 2 can also be provided on the support plate 35 , for example, vertically penetrate the support plate 35 . It may be more convenient to provide holes in the support plate 35 . Figure 8 It shows that the light-transmitting plate 35 and the support ring 26 are integral parts, and the opening is provided in the area between the support ring 26 and the support plate 35 . In a word, it is best to arrange the opening 28-1 or the opening 28-2 at the lower position of the adsorption cavity 38 as possible, so that the liquid medium 71 can flow out easily during the stripping process, and the release film 33 can be covered at last. The opening 28-1 ...

Embodiment 3

[0058] Such as figure 2 , Figure 9 with Figure 10 As shown in the figure, the light-transmitting member adopts a release plate 31, and the release plate 31 is in sliding and sealing cooperation with the inner side of the liquid tank body 21. The part protruding inside forms a positioning part 24, and the positioning part 24 can be a ring structure, also can be a multi-section structure along the ring circumference, also can be a separate part installed on the inner wall of the liquid tank body, the release plate 31 and the liquid tank The inner wall of the tank body 21 slides and seals, and is positioned upward by the positioning part 24 to determine the printing position. An elastic seal 27 is set between the positioning part 24 and the release plate 31, and the bottom of the liquid tank body 21 is fixed to the support plate 35. Connect and seal. A sealed adsorption cavity is formed by the support plate 35 , the liquid tank body 21 and the release plate 31 , and the ads...

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Abstract

The invention relates to a release device and method based on an adsorption cavity. The device includes a liquid tank body and a light-transmitting release plate. The liquid tank body is equipped with a photosensitive material, and the light beam passes through the release plate to selectively irradiate the photosensitive material layer by layer. Print and form the solidified model, the solidified model and the release film can be controlled to move away from each other during the layer-by-layer printing process, the release plate is provided with a support plate on the other side of the solidified model, and there is a gap between the support plate and the release plate An adsorption cavity is formed, the adsorption cavity is connected with the medium source and can control the medium of the adsorption cavity through the medium source, and the release plate alternates between the printing work position and the stripping work position. The invention improves the separation speed between the light-transmitting component and the solidified model, improves the three-dimensional printing speed, and improves the heat dissipation effect.

Description

technical field [0001] The invention belongs to the technical field of photocuring three-dimensional printing, and in particular relates to a release device and method based on an adsorption cavity. Background technique [0002] In the existing light-curing three-dimensional (3D) printers based on release film, the model will be bonded to the release film during the light-curing process of each layer, and the platform combined with the curing model is often moved up and then lowered back. The separation between the solidified model and the release film is achieved by positioning the position to set the layer thickness distance, and the reciprocating motion of the forming platform makes the separation speed slow. If the method of tilting the release film first can increase the separation speed, but in order to reflow the resin, the platform still needs to be raised to a large height and then lowered. If rollers are used to roll the lower surface of the release film to separa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/255B29C64/124B29C64/245B29C64/286B29C64/30B33Y30/00B33Y40/00
CPCB33Y30/00B33Y40/00B29C64/124B29C64/245B29C64/255B29C64/286B29C64/30
Inventor 季鹏凯
Owner YUANZHI TECH SHANGHAI CO LTD