Needle Feed Lockstitch Sewing Machine.

Common Uses: A needle-feed sewing machine is a type of sewing machine that uses a feed dog system to move the fabric under the needle. The feed dog, located underneath the presser foot, is responsible for pulling the fabric through the machine and keeping it moving in a smooth and even manner. The needle feed mechanism is synchronized with the machine's stitching so that the fabric is moved forward with each stitch, allowing for precise and even sewing. 

Some common uses of needle-feed sewing machines include:

• Tailoring: Needle-feed sewing machines are often used in tailoring, particularly for making garments such as suits, jackets, and pants. The precise control provided by the needle feed system allows for accurate and even stitching, which is important for creating a professional and well-finished appearance.

• Upholstery: Needle feed sewing machines are also commonly used in upholstery work, as they can handle heavy-duty fabrics and provide precise stitching that is essential for securing the fabric to the frame of a piece of furniture.

• Leather and Vinyl: Needle feed machines are ideal for working with leather and vinyl materials as they can easily handle the thickness of these materials and provide precise stitching for a clean and professional look.

• Home Decor: Needle-feed sewing machines can be used to create a variety of home decor items, such as curtains, pillow covers, and tablecloths. The precise stitching provided by the needle feed system is essential for ensuring that these items look neat and professional.

Overall, the needle feed system of a sewing machine provides improved control and precision when sewing, which makes it a popular choice for many sewing applications. 

 

Components: The needle feed mechanism is an important component of a sewing machine that helps control the movement of the fabric being sewn. The needle feed mechanism typically consists of the following components:

• Feed dog: This is a serrated metal plate that moves back and forth and grips the fabric, pulling it under the needle.
• Needle bar: This is the component that holds the needle and moves it up and down to create the stitch.
• Feed dog lever: This lever controls the movement of the feed dog. When the lever is engaged, the feed dog moves, pulling the fabric through the machine. When the lever is disengaged, the feed dog remains stationary, allowing the fabric to be repositioned.
• Needle plate: This is a flat metal plate with a hole in it that the needle passes through as it moves up and down.
• Stitch cam: This component controls the movement of the needle bar, determining the length and shape of the stitch.

In a needle-feed sewing machine, the needle bar is connected to a crank mechanism that moves the needle up and down. The feed dog is also connected to a separate mechanism that moves it back and forth, gripping the fabric and pulling it through the machine. 

As the needle bar moves up and down, the feed dog simultaneously grips the fabric and pulls it towards the needle, feeding it under the needle plate and into the sewing area. The stitch cam determines the length and shape of the stitch as the needle penetrates the fabric and forms a loop on the underside of the fabric. 

The needle feed mechanism allows for precise control of the fabric movement and helps create even, consistent stitches. 

 

Problems and Solutions: Needle-feed sewing machines are commonly used in industrial and commercial settings for various sewing applications. However, like any other machinery, needle-feed sewing machines can face technical problems that can cause interruptions in the sewing process. Here are some common technical problems and solutions for needle-feed sewing machines: 

• Skipping Stitches: This is a common problem that occurs when the needle and feed dog are not properly aligned. Solution: Check the needle and feed dog alignment and adjust them if necessary. 
• Broken Needle: This can occur due to several reasons, such as improper threading, incorrect needle size, or incorrect needle insertion. Solution: Replace the broken needle with a new one, ensure that you have the correct needle size and type for the fabric being sewn, and follow the proper needle insertion techniques. 
• Loose Threads: This can occur due to improper tension settings, incorrect threading, or using low-quality thread. Solution: Adjust the tension settings, re-thread the machine, and use high-quality thread. 
• Uneven Feeding: This can occur when the feed dog teeth are worn or damaged, or the feed mechanism is out of adjustment. Solution: Replace the worn or damaged feed dog teeth, or adjust the feed mechanism. 
• Machine Jamming: This can occur when the machine is not lubricated properly, or the needle and bobbin are not properly aligned. Solution: Lubricate the machine, check the needle and bobbin alignment, and make any necessary adjustments. 
• Unbalanced Stitching: This can occur when the pressure foot is not adjusted properly or the fabric being sewn is too thick or too thin. Solution: Adjust the pressure foot, and use the appropriate needle and thread for the fabric being sewn.

These are some of the common technical problems that can occur with needle-feed sewing machines and their solutions. Regular maintenance and proper use of the machine can help to prevent or minimize these issues.

Needle feed computerized Lockstitch Sewing Machine Specifications.

Auto Thread Trimmer	Yes.
Auto Pressure Foot Lifter	Yes.
Electronic Thread Tension	Yes.
Half Stitch and Back-Tack Button	Yes.
LED Light	Yes.
Semi-Dry Head	Yes.
Motor	Direct Drive Servo Motor.
Thread After Auto Trimming	3mm.
Knife System	Double Action Knife.

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