Theoretical and Experimental Study on the Levelling and Printing Quality Control of Delta 3D Printer

2020 ◽  
Author(s):  
Zeng Lianghua ◽  
Zou xinfeng
Keyword(s):  
Experimental Study ◽  
Quality Control ◽  
3D Printer ◽  
Printing Quality

Research and Application on Screen Soft Proofing Technology in Printing Quality Control

2012 ◽  
Vol 262 ◽  
pp. 263-268
Author(s):  
Zhan Jun Si ◽  
Jia Wang ◽  
Chong Gu
Keyword(s):  
Quality Control ◽  
Good Effect ◽  
Color Management ◽  
Actual Situation ◽  
Testing Scheme ◽  
Printing Quality ◽  
Display Technology ◽  
Soft Proofing ◽  
Display Performance

In recent years, screen soft proofing has matured with the development of color management and display technology, and it has become the direction of printing development and the key of promotion. This article aimed at raising a testing scheme of display performance and adjusting scheme of corresponding display parameters, on this account to test the professional display’s performance, adjust display parameters and make color management. At the same time with reflecting the actual situation of display, a stable and accurate color reproduction environment was provided for screen soft proofing. After that, evaluations were carried out to evaluate printing quality of screen soft proofing on the condition that display’s performance was good, consequently the differences between proofing effects and final printing were studied. The result shows that this testing scheme of display performance can reflect the truth of display which is tested in this paper, the display after adjusted and color management according to this scheme shows good effect in the ability of screen analog proofing original, it can approach the requirements of the printing proofing.

Research on the printing error of tilted vertical beams in delta-robot 3D printers

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yuezong Wang ◽  
Jinghui Liu ◽  
Mengfei Guo ◽  
LiuQIan Wang
Keyword(s):  
3D Printing ◽  
Kinematic Model ◽  
Three Dimensional ◽  
3D Printer ◽  
Simulation Approach ◽  
Content Type ◽  
Printing Quality ◽  
Delta Robot ◽  
Error Generation ◽  
Error Simulation

Purpose A three-dimensional (3D) printing error simulation approach is proposed to analyze the influence of tilted vertical beams on the 3D printing accuracy. The purpose of this study is to analyze the influence of such errors on printing accuracy and printing quality for delta-robot 3D printer. Design/methodology/approach First, the kinematic model of a delta-robot 3D printer with an ideal geometric structure is proposed by using vector analysis. Then, the normal kinematic model of a nonideal delta-robot 3D robot with tilted vertical beams is derived based on the above ideal kinematic model. Finally, a 3D printing error simulation approach is proposed to analyze the influence of tilted vertical beams on the 3D printing accuracy. Findings The results show that tilted vertical beams can indeed cause 3D printing errors and further influence the 3D printing quality of the final products and that the 3D printing errors of tilted vertical beams are related to the rotation angles of the tilted vertical beams. The larger the rotation angles of the tilted vertical beams are, the greater the geometric deformations of the printed structures. Originality/value Three vertical beams and six horizontal beams constitute the supporting parts of the frame of a delta-robot 3D printer. In this paper, the orientations of tilted vertical beams are shown to have a significant influence on 3D printing accuracy. However, the effect of tilted vertical beams on 3D printing accuracy is difficult to capture by instruments. To reveal the 3D printing error mechanisms under the condition of tilted vertical beams, the error generation mechanism and the quantitative influence of tilted vertical beams on 3D printing accuracy are studied by simulating the parallel motion mechanism of a delta-robot 3D printer with tilted vertical beams.

scholarly journals AN EXPERIMENTAL STUDY ON TWO SAMPLES OF KASIS GODANTI BHASMA PREPARED BY DIFFERENT METHODS W.S.R. TO ANEMIA

2021 ◽  
Vol 09 (1) ◽  
pp. 53-62
Author(s):  
Vidhiya Malviya ◽  
R.K. Patil ◽  
Anil Nagle
Keyword(s):  
Experimental Study ◽  
Quality Control ◽  
Satisfactory Result ◽  
Animal Experimentation ◽  
Pharmacological Effect ◽  
Control Group ◽  
Blood Samples ◽  
Ayurvedic Drugs ◽  
Two Samples

Introduction: The exploration of pharmacological effect on Ayurvedic drugs are only possible through ani-mal experimentation. For the global acceptance of the Kasis Godanti Bhasma (KGB) - A herbo-mineral for-mulation of Ayurveda pharmaceutics, there is needs to revalidate the formulation on all aspects from its safety, efficacy, quality control and animal experimentation. Aims and Objectives: 1. To evaluate the effi-cacy of Kasis Godanti Bhasma 1st and 2nd in Pandu (Anemia). 2. To compare the effectiveness of Kasis Go-danti Bhasma 1st and Kasis Godanti Bhasma 2nd in Pandu (Anemia). Material and Methods: Anemia was induced by intra -peritoneal injection of Phenylhydrazine (PHZ) at 40 mg/kg for 2 days. Rats were divided in six groups of four rats each. The first group is the control group received distillated water. The second group is anemic control group received only Phenylhydrazine at 40 mg/kg for 2 days. Third and fourth groups received KGB 1st 500 mg/kg and 1000 mg/kg respectively. While fifth and sixth groups received KGB 2nd 500 mg/kg and 1000 mg/kg respectively. The vehicle and the Bhasmas were administered from day 2 to day 15 after Phenylhydrazine administration. Blood samples were collected from the orbital vein on day 0 before Phenylhydrazine administration, and on day 2, 7, 15 after Phenylhydrazine injection. Re-sult and Conclusion: Experimental study of KGB-1 and KGB-2 shows satisfactory result. On comparing result of KGB-1 and KGB-2. KGB-2 with both doses of 500 mg and 1000 mg shows significant result in anti-anemic effect. While in KGB-1, only 500 mg dose shows the significant result in anti-anemic effect. On comparing dose of both the samples 500 mg dose of KGB-1 and KGB-2 shows satisfactory result.

scholarly journals Experimental investigation using vibration testing method to optimize feed parameters of color mixing nozzle for fused deposition modeling color 3D printer

2019 ◽  
Vol 11 (12) ◽  
pp. 168781401989619 ◽  
Author(s):  
Zhiyong Li ◽  
Dawei Zhang ◽  
Liangchen Shao ◽  
Shanling Han
Keyword(s):  
Fused Deposition Modeling ◽  
Vertical Vibration ◽  
Feed Speed ◽  
3D Printer ◽  
Feed Material ◽  
Fused Deposition ◽  
Printing Quality ◽  
Deposition Modeling ◽  
Color Mixing

To improve the blockage and printing quality of the color mixing nozzle of fused deposition modeling color 3D printer, the feed parameters of fused deposition modeling color 3D printer were studied by vibration test. The acceleration sensor was fixed up the color mixing nozzle to analyze the vertical vibration of the nozzle. The vibration test of different feed speed, torque, and material were performed under the actual printing condition. Vertical vibration of the nozzle was characterized by an acceleration sensor. The comparative analysis of the actual testing results indicates that the optimum feed parameters are feed torque of triple torque extruder, feed speed of 20 mm/s, and feed material of ABS. Further analysis shows that higher feed torque can be used to improve the printing quality of the color mixing nozzle. The appropriate feed speed of the color 3D printer can not only reduce the accumulation of wire material at a lower speed but also reduce the blockage caused by too-high feed speed. It is proposed that the feed material with smaller flow behavior index and no phase transition in the melting process shows smaller vibration acceleration amplitude.

Effect of Electrode Distance on Jetting Behavior of Non-Particle Nano Ag Conductive Ink in Electrohydrodynamic Micro Jet Printing

2017 ◽  
Vol 893 ◽  
pp. 118-121 ◽  
Author(s):  
Bo Xing ◽  
Chun Cheng Zuo ◽  
Feng Li Huang ◽  
Ye Bo Lu ◽  
Guang Shan Hu
Keyword(s):  
Quality Control ◽  
High Voltage ◽  
Direct Current ◽  
Low Voltage ◽  
Conductive Ink ◽  
Electrode Distance ◽  
Printing Quality ◽  
Current Voltage ◽  
Direct Current Voltage ◽  
Jet Printing

The effect of electrode distance on jetting behavior of non-particle nanoAg conductive ink during Electrohydrodynamics (EHD) under the direct current voltage is investigated. Experiments results indicate that the height of the meniscus increases while the curve decreases with the increase of electrode distance, and the jetting behavior evolves from pulsate cone jetting to pulsate micro dripping jetting. The low voltage combined with long electrode distance resulted in returning of meniscus to its original shape. With the increase of voltage, the increased electrode distance result in the increase of meniscus deformation and the electrode distance for maintaining the stable jetting was increased. Under the same voltage, the line width increases with the increase of electrode distance. The exceeded long electrode distance and high voltage resulted in jitter of elongated meniscus thus is not beneficial for the printing quality control.

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