Optimization of the link drive mechanism in a sewing machine using imperialist competitive algorithm

Abstract

Purpose – The purpose of this paper is to present, an optimization problem based on the imperialistic competitive algorithm (ICA) approach for optimizing the needle velocity and variation of needle acceleration in a link drive mechanism of a sewing machine. The optimal geometry of the link drive has been achieved using a non-linear optimization procedure. Design/methodology/approach – As an important study in this case, the authors might refer to a previous work in which they introduced the possibility of replacing the slider-crank mechanism, that is typically used in sewing machines, with a link drive mechanism. The authors regenerate the optimization problem by modifying the objective function and follow a novel optimization method based on the ICA to overcome the drawbacks of that work. In addition, further modification of the objective function with respect to the variation of needle acceleration is applied to assure smooth movement of the needle during sewing process. Findings – The results showed a significant improvement with respect to the optimization of needle velocity and variation of needle acceleration in comparison to that previous work. This clearly justifies the efficiency and reliability of the optimization formulation based on the ICA approach. Originality/value – Needle temperature is considered as an effective parameter on sewing process efficiency and stitch quality. Needle heat generated during sewing process is directly related to needle velocity in penetration zone which in turn depends on the needle driver mechanism of sewing machine. According to literature survey, few researches have focussed to design a driver mechanism of the sewing machine to reduce the generated needle heat. This mechanism has the ability of reducing the penetration velocity of the needle without affecting sewing speed which consequently can reduce the needle heat generated during needle penetration. The work here is novel regarding implementation of optimization algorithm for this mechanism.

Multi-objective robust design optimization of the mechanism in a sewing machine

“…Payvandy and Ebrahimi [1] used a mono-objective function with penalty weighting factors to minimize the coupler tracking error and the Jerk of the thread take-up lever. Ebrahimi et al [2] presented an optimization problem based on the imperialistic competitive algorithm (ICA) for optimizing the needle velocity and the variation of needle acceleration in a link drive mechanism of a sewing machine. Komarec et al [3] develop a mono-objective optimization of the needle transfer mechanism by means of the software Pro/Engineer Wildfire 4 with the aim to obtain a reduction of needle wear.…”

Mechatronic design optimization of the mechanism in a sewing machine

“…El Gholmy and El Hawary 3 analyzed the sewing needle vibrations by the Gorman’s eigen values technique. Ebrahimi and Payvandy 4 used the imperialist competitive algorithm (ICA) to optimize the needle jerk of the NBTTL mechanism. Sidlof and Votrubec 5 reduced the sewing machine vibration through an optimization approach based on MathModelica software.…”

The effect of joint clearance on the dynamic behavior of a needle driver mechanism in a typical sewing machine

“…Using a needle driving mechanism in lockstitch sewing machine with an optimal penetration velocity without having effect on the sewing speed, the produced heat could be considerably reduced. Other investigations on the sewing machine could be found in the research studies by Lojen (1998), Carvalho et al (2012) and Ebrahimi and Payvandy (2014).…”