Types of Sewing Machines
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Transcript of Types of Sewing Machines
Submitted to:
Syed Azharul Haque
Lecturer, BIFT
Date: 23-07-09
Submitted by: Md. Hasan Mahmud
Id: 072-114-0-35
Md. Saiful Islam
Id: 072-093-0-35
Md Hasan Al Rashid
Id: 072-091-0-35
Md. Asif Ahmed
Id: 072-122-0-35
Md. Kamrul Hoque
Id: 072-125-0-35
Presentation on
Different Types of
Sewing Machine
Lock stitch machine
The lockstitch uses two threads, an upper and a lower. The upper thread runs from a spool kept on a spindle on top of or next to the machine, through a tension mechanism , a take-up arm , and finally through the hole in the needle. The lower thread is wound onto a bobbin, which is inserted into a case in the lower section of the machine. To make one stitch, the machine lowers the threaded needle through the cloth into the bobbin area, where a hook catches the upper thread at the point just after it goes through the needle. The hook mechanism carries the upper thread entirely around the bobbin case, so that it has made one wrap of the bobbin thread. Then the take-up arm pulls the excess upper thread ( from the bobbin area ) back to the top forming the lockstitch ideally in the center of the thickness of the material
The tension mechanism prevents the thread from being pulled from the spool side, the needle is pulled out of the cloth, and the feed dogs pull the cloth back one stitch length, the cycle is repeated as the machine turns mechanically
Description
Lockstitch is so named because the two threads, upper and lower, "lock" together in the hole in the fabric which they pass through. The term "single needle stitching", often found on dress shirt labels, refers to lockstitch.
Use of Lock stitch machine:
Neck join purpose (T-shirt ), Top stitch, etc.
Overlock Sewing Machine
Information:Stitch Formation:-Overlock
Stitch Type:-Industrial Sewing
machine
Description: Its applicable to the OVEREDGING operation over
THIN,MODERATE & THICK fabrics. Due to its automatic lubricating system or device the machine operates perfectly and
smoothly ,at low sewing fension and perfect stable stitches ,even at high speed seaming.
It can be 4/5 thread but it is a high speedy overlock sewing machine.
Features:4/3 Threads for seams and overcast
Decorative stitching abilities Adjustable stitch width and length
Disengageable knife cutter New Style Serger Weighs 17 pounds
Made In China
Flat Lock Machine
Flatlock Sewing Machine - High speed
The Revo Machine - (Model DR-5) is used for T-shirts stitching, hosiery, under-garments, knits stitching - side,
front hemming & elastic attaching. It is available in 3 threads, 4 threads & 5 Threads models.
Bobbinless stitching system for high production. Easily interchangeable into 2, 3, 4 & 5 Thread model.
Hemming, Side Folders & Front folders can be attached. Distance between Needles can be adjusted by changing parts.Also available in 6 Threads, 4 needles - 2 loopers
model, Parallel Flatlock. Low Cost machine & interchangeable parts.
Operates flatlock sewing machine equipped with cutting attachment to join parts of knitwear with flat, nonraveling seams. Places garment part around arm of machine with fabric edges together and operates machine to seam parts and cut excess fabric from seam. Performs duties as described under SEWING-MACHINE OPERATOR, REGULAR EQIPMENT in any industry.
Operation
Specifications:
1300 stitches per minute 3/4 thread adaptability: Three-thread rolled hem
Flatlock/ladder Blind hem Rolled hem
Auto-threading looper lever Adjustable stitch width (3.0 - 7.0 mm) Adjustable stitch length (1.0 - 4.0 mm)
Knife width adjustment Color-coded threading
Easy tension adjustment Complete accessory kit
Technical Specifications
Technical Specification
Max. Speed 3300 stitches per minute
SeamDouble chain, parallel double chain, flatlock, 3,4 & 5 Threads, Parallel Flatlock & 6 threads.
Distance between needles
6 mm & 7/32 Inch1
Stitches per inch
8 to 12 (adjustable)
Material Thickness
6 mm Max.
Needle Size 1. DV x 1 # 9 upto 21./ 2. DV x 43 # 9 upto 21
Power Required 400 W, 1425 R.p.m. motor
Button Attatchment machine