Investigating the attack angle of squeegees with different geometries

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F18%3A00319127" target="_blank" >RIV/68407700:21230/18:00319127 - isvavai.cz</a>

Result on the web

<a href="http://www.emeraldinsight.com/doi/abs/10.1108/SSMT-09-2017-0023?journalCode=ssmt" target="_blank" >http://www.emeraldinsight.com/doi/abs/10.1108/SSMT-09-2017-0023?journalCode=ssmt</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1108/SSMT-09-2017-0023" target="_blank" >10.1108/SSMT-09-2017-0023</a>

Result language

angličtina

Original language name

Investigating the attack angle of squeegees with different geometries

Original language description

Purpose The attack angle of stencil printing squeegees with different geometries was analysed using finite element modelling. Design/methodology/approach A finite element model (FEM) was developed to determine the attack angle during the stencil printing. The material properties of the squeegee were included in the model according to the parameters of steel AISI 4340, and the model was validated by experimental measurements. Two geometric parameters were investigated; two different unloaded angles (45° and 60°) and four overhang sizes of the squeegee (6, 15, 20 and 25 mm). Findings It was found that the deflection of the blade is nearly homogenous along the length of the squeegee. This implies that the attack angle does not change significantly along the squeegee length. The results showed significant differences between the initial and the attack angle. For example, the angle of the squeegee with 15 mm overhang size and with 60° initial angle decreased by more than 5° for a specific squeegee force of 0.3 N/mm; resulting in an attack angle of 53.4°. Originality/value The attack angle during the printing is considerably lower than the initial angle as a result of the printing force. The papers, which were dealing with the numerical modelling of the stencil printing presumed that the squeegees were having their initial angle. This could have led to invalid numerical results. Therefore, we decided to investigate the attack angle during stencil printing for squeegees with different initial geometries to enhance the numerical modelling of stencil printing.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Soldering & Surface Mount Technology

ISSN

0954-0911

e-ISSN

1758-6836

Volume of the periodical

30

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

112-117

UT code for WoS article

000428540300008

EID of the result in the Scopus database

2-s2.0-85038091884