Printing method and system of DLP photocuring printer
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A printer and light-curing technology, applied in 3D object support structure, additive manufacturing, processing data acquisition/processing, etc., can solve the problems of affecting printing efficiency and long printing time, so as to reduce exposure time, improve printing efficiency, and reduce printing time. the effect of time
Inactive Publication Date: 2021-03-05
XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV
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[0003] When DLP photo-curing printers print complex structures, the exposure time and peeling speed of each layer are usually fixed, but some layers are inherently cross-linked and st
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[0029] Example 1
[0030] See figure 1 with image 3 The present invention provides a technical solution: a printing method for a DLP photocuring printer, comprising the steps of:
[0031] Step 1: Build a digital 3D model to be printed;
[0032] Step 2: Treatment of the digital 3D model to obtain a multi-layer model slice, and the number of model slices is n;
[0033] Step 3: From the bottom end to the top of the digital 3D model, according to the model slice, the current print layer is m, the exposure time is H, H is 1S.
[0034] Step 4: Calculate the cross-sectional area of each layer of the model slice, the cross-sectional area of the current print model slice is a, the cross-sectional area of the upper layer print model slice is b, and calculates the thickness D of the intermediate position of each layer of the model slice, and The intermediate position of the model slice is scanned at both ends to obtain the left thickness E and the right thickness f.
[0035] Step 5: A...
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[0046] Example 2
[0047] See figure 1 with image 3 The present invention provides a technical solution: a printing method for a DLP photocuring printer, comprising the steps of:
[0048] Step 1: Build a digital 3D model to be printed;
[0049] Step 2: Treatment of the digital 3D model to obtain a multi-layer model slice, and the number of model slices is n;
[0050] Step 3: From the bottom end to the top of the digital 3D model, according to the model slice, the current print layer is m, the exposure time is H, H is 1S.
[0051] Step 4: Calculate the cross-sectional area of each layer of the model slice, the cross-sectional area of the current print model slice is a, the cross-sectional area of the upper layer print model slice is b, and calculates the thickness D of the intermediate position of each layer of the model slice, and The intermediate position of the model slice is scanned at both ends to obtain the left thickness E and the right thickness f.
[0052] Step 5: A...
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Abstract
The invention discloses a printing method of a DLP photocuring printer. The printing method comprises the following steps that 1, a digital 3D model of a to-be-printed object is established; 2, the digital 3D model is subjected to slicing treatment, and multiple layers of model slices are obtained, wherein the number of the model slices is n; and 3, printing is started from the bottom end to the top end of the digital 3D model from the first layer according to the model slices, wherein the number of the current printing layers is m, the exposure time is h, and h is 1s. According to the printing method, through a digital 3D model processing system, during specific using, the sectional area of the current printing model slice and the sectional area of the upper layer of model slice can be compared through a sectional area comparison unit in the digital 3D model processing system, if the sectional area of the current printing model slice is smaller than the sectional area of the upper layer of model slice, the cross-linked structure of the two layers of slices is relatively stable, thus, the exposure time can be properly shortened, the printing time of a complex model is greatly shortened, and the printing efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of printers, in particular to a printing method and system for a DLP light-curing printer. Background technique [0002] The working principle of DLP (Digital Light Processing) light-curing 3D printer is to use DLP technology. The light source is imaged by a projector. The light source solidifies the liquid photosensitive resin layer by layer, and prints out a three-dimensional object with a higher resolution. Its resolution exceeds that of a typical FDM ( Fusion deposition manufacturing) type 3D printers. [0003] When DLP photo-curing printers print complex structures, the exposure time and peeling speed of each layer are usually fixed, but some layers are inherently cross-linked and stable, and the exposure time does not need to be too long. If the exposure time is unified by layer, the total printing If the time is too long, the printing efficiency will be affected. Contents of the invention [0004]...
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