A feed crank link assembly is a mechanical component in a variety of machines, including sewing machines, that is responsible for moving the material or fabric being worked upon, typically in a reciprocating motion.
In sewing machines, for instance, the feed crank link assembly is connected to the feed dog, which is a small, toothy wheel that moves the fabric under the needle. When the feed dog moves, it pulls the fabric through the needle hole, creating a stitch.
The feed crank link assembly generally consists of three main components:
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Feed crank: The feed crank is a small, rotating shaft that is driven by the sewing machine’s motor.
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Feed rocker arm: The feed rocker arm is a pivoted arm that is connected to the feed crank.
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Feed dog: The feed dog is a small, toothy wheel that is attached to the end of the feed rocker arm.
When the feed crank rotates, it turns the feed rocker arm. The feed rocker arm, in turn, moves the feed dog back and forth, pushing the fabric under the needle.
The feed crank link assembly is a critical component of sewing machines, as it is responsible for ensuring that the fabric is fed smoothly and uniformly through the machine. A properly functioning feed crank link assembly will result in consistent stitching and prevent the fabric from bunching or snagging.
Here are some of the functions of a feed crank link assembly:
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Moves the material or fabric being worked upon.
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Provides consistent and uniform feeding of the fabric.
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Prevents the fabric from bunching or snagging.
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Ensures accurate and consistent stitching.
A feed crank link assembly is a relatively simple component, but it plays an important role in the operation of sewing machines and other machinery. By understanding how it works, you can better appreciate its importance and know how to maintain it properly.
