Design Construction and Performance Analysis …
27
Fig. 2 Gearing mechanism
Fig. 3 The modified hook
with gear (4)
tensioning device remains perpendicularly in the way of the loop and for the motion,
it gets trapped which consequently creates the stitch on the fabric. Continuously, the
stitch keeps forming properly by both the upper and bottom thread (Fig. 2).
The following Fig. (4) represents our designed parts assembled on the machine.
As mentioned above, due to the continuous flow of sewing thread and motion of
the needle there is a fact about an increase of temperature that gives rise to the risk
of sewing operation. There is no sewing operation can be found that doesn’t require
any kind of stoppage. For various kinds of designs and sewing requirements, there
always remain small breaks in turning points of the seams. Alongside that advantage
for ensuring the highest abrasion resistance, Glace Cotton threads were used in this
operation [3]. For both upper and bottom thread, the same kind of threads was used
cause like the upper thread on the way to the needle, a number of guides or incurved
thread paths are present here in the bobbin less stitching mechanism. Furthermore, it
was observed in previous studies that sewing speed is the most important factor for
needle temperature followed by sewing time, number of layers and the stitch density
[4]. None of these factors were the objective of this work rather the main focus was
on the construction of the design and its analysis of performance to produce stitch
27
Fig. 2 Gearing mechanism
Fig. 3 The modified hook
with gear (4)
tensioning device remains perpendicularly in the way of the loop and for the motion,
it gets trapped which consequently creates the stitch on the fabric. Continuously, the
stitch keeps forming properly by both the upper and bottom thread (Fig. 2).
The following Fig. (4) represents our designed parts assembled on the machine.
As mentioned above, due to the continuous flow of sewing thread and motion of
the needle there is a fact about an increase of temperature that gives rise to the risk
of sewing operation. There is no sewing operation can be found that doesn’t require
any kind of stoppage. For various kinds of designs and sewing requirements, there
always remain small breaks in turning points of the seams. Alongside that advantage
for ensuring the highest abrasion resistance, Glace Cotton threads were used in this
operation [3]. For both upper and bottom thread, the same kind of threads was used
cause like the upper thread on the way to the needle, a number of guides or incurved
thread paths are present here in the bobbin less stitching mechanism. Furthermore, it
was observed in previous studies that sewing speed is the most important factor for
needle temperature followed by sewing time, number of layers and the stitch density
[4]. None of these factors were the objective of this work rather the main focus was
on the construction of the design and its analysis of performance to produce stitch