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Uses: In the apparel manufacturing industry,
there are different types of sewing machines used for various applications.
Here are some areas of use for the three types of machines you mentioned:
Two Needle Feed Off The Arm Machine: This machine is commonly used for sewing flat-seamed products such as
shirts, blouses, and dresses. It can also be used for other applications that
require a flat seam, such as attaching collars, cuffs, and plackets.
Two Needle Feed Off The Arm Machine with Puller: This machine is typically used for sewing heavier fabrics, such as
denim and leather. The puller device helps to ensure that the fabric is fed
through the machine evenly, preventing puckering and other issues.
Three Needle Feed Off The Arm Machine with Two Iron Pullers: This machine is used for sewing a wide range of products, including sportswear, jeans, and other heavy-duty garments. The two iron pullers provide a strong grip on the fabric, helping to ensure that it is fed through the machine evenly and preventing puckering.
Overall, the choice of machine depends on the type
of garment being produced and the specific requirements of the sewing
operation. Operators should carefully consider the features and capabilities of
each machine before making a selection to ensure that they are able to produce
high-quality garments efficiently and cost-effectively.
Components: Here are the diagrams
or components of each machine:
Two Needle Feed Off The Arm Machine:
- Needle bars (2)
- Presser feet (2)
- Thread tension mechanisms (2)
- Needle thread guides (2)
- Bobbin cases (2)
- Feed dogs
- Arm
- Stitch length adjustment mechanism
- Thread take-up levers (2)
- Handwheel
- Power switch and motor
Two Needle Feed Off The Arm Machine with Puller:
Same components as the two needle feed off the arm
machine, with the addition of:
- Puller device (consisting of upper and lower puller rollers and a puller foot)
- Puller adjustment mechanism
Three Needle Feed Off The Arm Machine with Two Iron Pullers:
- Needle bars (3)
- Presser feet (3)
- Thread tension mechanisms (3)
- Needle thread guides (3)
- Bobbin cases (3)
- Feed dogs
- Arm
- Stitch length adjustment mechanism
- Thread take-up levers (3)
- Handwheel
- Power switch and motor
- Two iron pullers (consisting of upper and lower rollers and a puller foot)
- Puller adjustment mechanisms (2)
Overall, these machines have similar components, but
the addition of puller devices and iron pullers in the latter two machines
helps to ensure that the fabric is fed through the machine evenly, resulting in
higher-quality stitches and improved efficiency.
Problems and Solutions: Here are some
technical or mechanical problems and solutions that may arise when using the
three types of machines:
Two Needle Feed Off The Arm Machine:
- Skipped stitches: This can be caused
by a dull needle, incorrect needle size, or incorrect thread tension. The
solution is to replace the needle, adjust the needle size or thread tension, or
use a better-quality thread.
- Fabric puckering: This can be caused
by incorrect feed dog pressure, incorrect stitch length, or incorrect thread
tension. The solution is to adjust the feed dog pressure, stitch length, or
thread tension.
- Thread breakage: This can be caused
by a damaged or worn needle, incorrect needle size, or incorrect thread
tension. The solution is to replace the needle, adjust the needle size or
thread tension, or use a better-quality thread.
Two Needle Feed Off The Arm Machine with Puller:
- Uneven feeding: This can be caused by incorrect puller
pressure, incorrect puller roller alignment, or incorrect fabric thickness. The
solution is to adjust the puller pressure, align the puller rollers, or use a
different puller foot.
- Puller slippage: This can be caused
by worn or damaged puller rollers, incorrect puller pressure, or incorrect
puller foot. The solution is to replace the puller rollers, adjust the puller
pressure, or use a different puller foot.
- Fabric damage: This can be caused by incorrect puller
pressure, incorrect puller foot, or incorrect stitch length. The solution is to
adjust the puller pressure, use a different puller foot, or adjust the stitch
length.
Three Needle Feed Off The Arm Machine with Two Iron Pullers:
- Uneven feeding: This can be caused by incorrect iron
puller pressure, incorrect iron puller roller alignment, or incorrect fabric
thickness. The solution is to adjust the iron puller pressure, align the iron
puller rollers, or use a different iron puller foot.
- Iron puller slippage: This can be caused by
worn or damaged iron puller rollers, incorrect iron puller pressure, or
incorrect iron puller foot. The solution is to replace the iron puller rollers,
adjust the iron puller pressure, or use a different iron puller foot.
- Fabric damage: This can be caused by incorrect iron
puller pressure, incorrect iron puller foot, or incorrect stitch length. The
solution is to adjust the iron puller pressure, use a different iron puller
foot, or adjust the stitch length.
In all cases, regular machine maintenance, such as
cleaning and oiling, can help prevent technical or mechanical problems and
ensure that the machines operate smoothly and efficiently.
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