Design Construction and Performance
Analysis of a Bobbinless Lockstitch
Sewing Machine to Increase
the Effectiveness in Industrial Production
Md. Nazmul Haque Nihad, Zihan Rana Zim, and Mahfuj Ul Sakik
1 Introduction
The Lockstitch sewing machine is widely used in textile industries for its efficacy
and simplicity. This stitch is formed by two sets of threads which are needle thread
and bobbin thread. The upper thread runs from a spool kept on a spindle on top
of or next to the machine, using a mechanism that works on a principle of tensile
force through the take-up arm, and finally through the hole in the needle. Meanwhile,
the lower thread is wound onto a bobbin, which is inserted into a case in the lower
section of the machine below the material. For a large amount of production, the size
of the bobbin package is quite small and for which, after a certain time, it needs to be
replaced repeatedly. This modification greatly simplifies the uninterrupted supplying
of the bottom thread and qualifies the entire operation to be carried out completely
automatically without replacement of any bobbin. The existing work is an object of
the invention to provide a device capable of adapting a bobbinless coil of thread for
use with the detecting apparatuses but the addition of a device makes the operating
the machine a bit complex [1]. In previous work, the bottom thread was supplied
directly from a bulk Source, such as a large cone-shaped winding, being metered
out from the source, and it was then injected into the basket cavity of a lockstitch
sewing machine (where the bobbin would normally be placed) to cooperate with a
conventional reciprocating needle carrying a top thread to form lockstitches between
the top thread and the bottom thread but the production of this design is full of extra
machine parts which made the industrialization quite impossible [2].
Md. N. H. Nihad (B) · Z. R. Zim
Department of Textile Engineering, National Institute of Textile Engineering and Research
(NITER), Dhaka, Bangladesh
e-mail: nazmulnihad@gmail.com
M. U. Sakik
Department of Mechanical Engineering, National Institute of Textile Engineering and Research
(NITER), Dhaka, Bangladesh
© Springer Nature Singapore Pte Ltd. 2021
A. Majumdar et al. (eds.), Functional Textiles and Clothing 2020,
https://doi.org/10.1007/978-981-15-9376-5_3
25
Analysis of a Bobbinless Lockstitch
Sewing Machine to Increase
the Effectiveness in Industrial Production
Md. Nazmul Haque Nihad, Zihan Rana Zim, and Mahfuj Ul Sakik
1 Introduction
The Lockstitch sewing machine is widely used in textile industries for its efficacy
and simplicity. This stitch is formed by two sets of threads which are needle thread
and bobbin thread. The upper thread runs from a spool kept on a spindle on top
of or next to the machine, using a mechanism that works on a principle of tensile
force through the take-up arm, and finally through the hole in the needle. Meanwhile,
the lower thread is wound onto a bobbin, which is inserted into a case in the lower
section of the machine below the material. For a large amount of production, the size
of the bobbin package is quite small and for which, after a certain time, it needs to be
replaced repeatedly. This modification greatly simplifies the uninterrupted supplying
of the bottom thread and qualifies the entire operation to be carried out completely
automatically without replacement of any bobbin. The existing work is an object of
the invention to provide a device capable of adapting a bobbinless coil of thread for
use with the detecting apparatuses but the addition of a device makes the operating
the machine a bit complex [1]. In previous work, the bottom thread was supplied
directly from a bulk Source, such as a large cone-shaped winding, being metered
out from the source, and it was then injected into the basket cavity of a lockstitch
sewing machine (where the bobbin would normally be placed) to cooperate with a
conventional reciprocating needle carrying a top thread to form lockstitches between
the top thread and the bottom thread but the production of this design is full of extra
machine parts which made the industrialization quite impossible [2].
Md. N. H. Nihad (B) · Z. R. Zim
Department of Textile Engineering, National Institute of Textile Engineering and Research
(NITER), Dhaka, Bangladesh
e-mail: nazmulnihad@gmail.com
M. U. Sakik
Department of Mechanical Engineering, National Institute of Textile Engineering and Research
(NITER), Dhaka, Bangladesh
© Springer Nature Singapore Pte Ltd. 2021
A. Majumdar et al. (eds.), Functional Textiles and Clothing 2020,
https://doi.org/10.1007/978-981-15-9376-5_3
25