1. Pick up mechanism take-up mechanism
When sewing, the sewing machine plays the role of conveying, retrieving and tightening stitches in the process of forming stitches. It can be divided into the following:
1. Cam take-up mechanism: mechanism driven by cam.
2. Connecting rod take-up mechanism: mechanism driven by four bar linkage to drive thread picking mechanism.
3. Slide bar take-up mechanism: mechanism driven by crank slide mechanism to drive thread picking mechanism.
4. Rotary thread-picking mechanism: a mechanism for thread-picking by means of one or two discs or other shaped components with thread-picking pins and a rotating motion
5. Needle-rod thread-taking mechanism: a thread-passing or thread-clamping device fixed on the needle-rod or a thread-taking mechanism fixed directly on the needle-rod.
Two. Feeding mechanism feeding mechanism
Sewing machines are used to carry out sewing materials when sewing. It is classified as: forward feeding mechanism; backward feeding mechanism; transverse feeding mechanism; down feeding mechanism; up feeding mechanism; needle feeding mechanism; up and down compound feeding mechanism; up and down compound feeding mechanism; up and down compound feeding mechanism; up, down compound feeding mechanism; up, down compound feeding mechanism; differential feeding mechanism; roller feeding mechanism.
Three. Hook line mechanism thread hooking mechanism
In a sewing machine, a mechanism that hooks the stitching ring to form a stitch after the stitching thread is led through the stitching ring. Its classification mainly includes: rotary hook mechanism; rotary hook mechanism; rotary hook mechanism; swinging hook mechanism; swing hook mechanism; bending needle mechanism; line hook mechanism, fork needle mechanism.
Four. Take-up rod travel take-up lever stroke
The distance between threading holes on the take-up rod and the two limits in one cycle of movement.
Five. Needle stroke needle bar stroke
The distance between a point on the needle bar and the two extreme positions of the needle bar movement.
Six. Sewing speed sewing speed
The number of needles per minute of the sewing machine is: needle/min, maximum sewing speed: the maximum number of needles that the sewing machine can bear under normal sewing conditions; working sewing speed: the highest sewing speed that the sewing machine can endure continuous and safe operation under normal sewing conditions.
Seven, suture thread
Sewing thread. It is usually made of cotton yarn, chemical fiber thread, metal wire, etc. The main categories are: needles; shuttle wires; bending needles; stretch lines; overlay lines.
Eight. Trace Stich
A unit consisting of one or more stitches connected, interwoven, or interwoven on a sewing material each time the needle of a sewing machine passes through it.
Nine, presser foot presser
A member that exerts pressure on the surface of a seam. According to its sewing machine performance, presser foot can be divided into flat sewing machine presser foot, sewing machine presser foot, special machine presser foot. According to its function, presser foot can be divided into ordinary presser foot and special presser foot. There are many kinds of special presser feet, such as crimp presser feet, feed presser feet, double needle presser feet and so on.
Ten. Cutting device material trimming device
During the sewing process, the sewing device is removed. There is a device for cutting off the waste material in the sewing machine and the knife sewing machine. There is a device for removing waste materials in sewing leather sewing machines. In automatic sewing machine, there are devices for cutting off thread belt and decorative belt.
Eleven. Opening device punching winder
A device for opening holes on sewing materials during sewing. There is a device for opening eyelet in keyhole machine. There are blooming holes in the embroidery machine.
Twelve. Other devices
Other devices include: automatic dialing device, automatic cutting device, automatic stop needle position device, oil absorption device, lubrication device and so on.