Explanation of the hottest sewing machine terms

2022-08-22
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Explanation of sewing machine terms

1. Sewing machine (sewing machine) basting sewing machine

sewing material is formed by needle and thread through the movement of the machine and manual control of sewing material to form stitches with arbitrary needle pitch length. In the sewing industry, it is a special sewing machine specially used for temporary positioning of two layers of sewing material for initial sewing

2. Manual stitching machine (beading machine) decorative stitching machine

a sewing machine in which the needle and thread pass through the movement of the machine to form a stitch completely the same as that of manual sewing. It is specially used for decorative sewing in the sewing industry

3. Fur abbuting machine

sewing machine for stitching all kinds of fur

4. Automatic sewing machine

controlled by computer, it is equipped with automatic monitoring system, feeding system and sewing machine that can automatically complete a certain sewing process, such as automatic sewing, sewing according to the set track, needle stopping, thread cutting, etc

for example, the automatic bag opening machine is a sewing equipment that can automatically complete the processes of bag cutting, bag sewing and bag covering

automatic upper sleeve machine is a sewing machine that can automatically complete the garment upper sleeve process

the automatic bagging machine is a sewing equipment that can automatically complete the process of putting a patch bag on the sewing machine or putting a patch bag on the pants

automatic collar feeding machine is a sewing equipment that can automatically complete the collar feeding process of shirts. Etc.

5. Take up mechanism takes up mechanisms

when sewing, the sewing machine plays the role of conveying, retrieving and tightening stitches in the process of forming stitches. It is classified as:

cam thread take-up mechanism

a mechanism in which the cam drives the thread take-up bar to move

connecting rod take-up mechanism:

a mechanism driven by a four-bar mechanism. The thread take-up bar is the connecting rod of a four-bar linkage

slide bar take-up mechanism:

a mechanism driven by the crank slide bar mechanism. The thread take-up bar is the guide rod of the four-bar linkage

rotary thread take-up mechanism:

a mechanism for thread take-up movement by rotating one or two discs or other shaped components equipped with thread take-up pins

needle bar thread take-up mechanism:

by the thread passing or thread clamping device fixed on the needle bar, or the mechanism directly fixed on the needle bar thread take-up rod

6. Feeding mechanisms

the mechanism that delivers sewing material when sewing machine. It is classified as:

forward feeding mechanism: feeding in the direction away from the operator

backward feeding mechanism: feeding in the direction of the operator

transverse feeding mechanism: feeding along the left and right directions of the operator

lower feeding mechanism: a mechanism in which the presser foot of the pressing rod mechanism presses the sewing material, and the lower feeding tooth of the feeding mechanism pushes the sewing material on the back of the sewing material. It is the most basic feeding form in sewing machines

upper feeding mechanism: a mechanism in which the upper feeding presser foot of the alternating pressing rod mechanism pushes the sewing material on the top surface of the sewing material

needle feeding mechanism: a mechanism that pushes the sewing material together with the lower feeding tooth of the lower feeding mechanism due to the swing of the needle bar mechanism after the machine needles the sewing material

upper and lower composite feeding mechanism: a mechanism in which the upper feeding presser foot and the lower feeding tooth act on the top and back of the sewing material at the same time to push the sewing material together

upper and needle composite feeding mechanism: a mechanism that pushes the sewing material by the upper feeding presser foot and the needle inserted into the sewing material at the same time

needle and lower composite feeding mechanism: a mechanism in which the needle inserted into the sewing material and the feeding tooth act on the sewing material at the same time to push the sewing material together

upper, needle and lower integrated feeding mechanism: it is a mechanism that pushes the sewing material by the upper feeding presser foot and the lower feeding teeth acting on the top and back of the sewing material at the same time when the needle is fed into the sewing material

differential feeding mechanism: a mechanism with independent feeding by the front and rear feeding teeth. This mechanism can independently adjust the feeding speed and feeding distance of the front and rear feeding teeth to make the sewing material shrink or stretch

roller feeding mechanism: the upper roller presses the top surface of the sewing material, and the driving mechanism drives the lower feeding roller to push the sewing material on the back of the sewing material

7. Thread hooking mechanisms

during sewing, a mechanism that closes the oil return valve and hooks the thread loop to form a stitch after the needle belt guides the suture through the thread loop formed by the sewing material. It is classified as:

rotary thread hooking mechanism: a mechanism that completes the thread hooking action with a rotating thread hooking piece, which is divided into:

rotary hook thread hooking mechanism: the rotary hook body in the lock stitch sewing machine is driven by the rotary mechanism, which hooks the thread ring of the needle and covers it through the shuttle core sleeve to interweave with the shuttle thread to form a lock stitch

rotary hook thread hooking mechanism: in a single line chain stitch sewing machine, the water chestnut shaped hook without thread is driven by the rotary mechanism to hook the thread loop of the needle under the sewing material to form a single line chain stitch

swing hook mechanism: use the swing hook part to complete the hook action mechanism

swing shuttle hook mechanism: the swing shuttle body in the lock stitch sewing machine is driven by a semi rotating mechanism, which hooks the needle ring of the machine with the swing shuttle and covers it with the swing shuttle and its shuttle core sleeve, interweaving with the shuttle to form a lock stitch

looper thread hooking mechanism: in the chain thread sewing machine, there is a thread hooking part with a curved suture, which swings back and forth to hook the thread ring on the needle or the thread on another thread hooking part to sew with each other to form a chain stitch

thread hook hook mechanism: in a single line chain stitch sewing machine, the hook shaped thread hook without threading is driven by the swing mechanism to hook and expand the thread loop under the sewing material to form a single line chain stitch mechanism

fork needle thread hooking mechanism: the thread hooking part with a fork at the end without threading the suture is driven by the swing mechanism, which forks the suture and interconnects to form a chain stitch

8. Take up lever stroke

the distance between the two limits of the threading hole on the take-up lever in a cycle of motion

9. Needle bar stroke

the distance between a certain point on the needle bar and the two limit positions of needle bar movement

10. Sewing speed sewing speed

the number of stitches per minute of the sewing machine, unit: needle/min.

maximum sewing speed: the maximum number of stitches that the sewing machine can withstand under normal sewing conditions

working sewing speed: the maximum sewing speed at which the sewing machine can withstand continuous safe operation under normal sewing conditions

11. Thread

thread for sewing. Generally, it consists of cotton thread, chemical fiber thread, metal wire, etc

needle and thread: the suture that passes through the needle hole of the machine

shuttle thread: the suture led out by the shuttle core through the shuttle sheath

curved needle thread: the suture passing through the curved needle hole

taut: the suture that is beneficial to the back of the sewing material is the necessary curved needle thread to form the stitch

covering thread: the suture covering the front of the sewing material and used for reinforcement and decoration

12. Stitch stitch

a unit formed by one or more stitches connected, interconnected or interwoven on the sewing material each time the needle of the sewing machine pierces the sewing material. Self connection refers to the connection method in which a loop of the machine needle suture is threaded into the front loop formed by the suture itself during sewing; Interconnection refers to the connection method of threading the curved needle suture into the loop formed by the machine needle suture after the machine needle passes through the sewing material, and then threading the loop formed by the curved needle suture when the machine needle passes through the sewing material again after the sewing material is fed; During interweaving sewing, the connection method of the thread loop formed by the machine needle suture after the shuttle thread is threaded into the machine and the needle passes through the sewing material. It is classified as:

chain 4. Experimental steps: type stitch:

stitch formed by one or more needles and threads connected by themselves or with curved needles and threads. The seam line is divided into:

single line chain stitch:

stitch formed by a single needle thread passing through the seam material

multi thread chain stitch:

stitch formed by the interconnection of one or more needles and one or more curved needles

covering chain stitch (covering stretch stitch):

on the basis of the multi thread chain stitch formed by two or more stitches, add one or two covering stitches, which run through all the stitches on the front and the stitches interconnected below according to the zigzag trend

bonded chain stitch:

it is connected by one needle and thread, or by one needle and thread and two curved needle threads, and the suture envelops the stitch on the edge of the sewing material

lock stitch:

stitch formed by interweaving needle and lock

combined stitch:

more than two different stitches are formed at the same time in sewing

13. Stitch length

the length of a stitch unit. The straight stitch length is the projection length of the stitch parallel to the feeding direction. The horizontal stitch length is the projection length of the stitch perpendicular to the feeding direction

14. Loop loop the feature of forming a loop during sewing is that after the needle leads the suture to the lowest position through the sewing material, when the needle picks up a certain distance again, the suture near the eye of the needle is lifted and bent by the eye of the needle, which is called a loop

15. Straight stitching

forms a continuous stitch on the sewing material. According to its shape, it is divided into: straight seam, which forms a straight continuous stitch on the sewing material along the feeding direction; Zigzag sewing, forming a continuous zigzag continuous stitch on the sewing material; Decorative stitches are stitches that are necessary only for the beauty of appearance, not for the structure, which are called decorative stitches

16. Braid thread chain

after sewing, the sewing machine continues to sew under the condition of seamless material. The string of stitches formed by the self connection of needle and thread or the interconnection of needle and thread and curved needle thread or covering thread is called braid

17. Seam

the type of stitching of two or more layers of sewing material after folding in different ways

18. Stitch distance between need point trackers

stitch is the trace of the machine needle on the sewing material. Stitch distance is the distance between two adjacent stitches on the sewing material. The straight stitch distance is the projection distance parallel to the feeding direction in the zigzag seam; The transverse stitch distance is the projection distance perpendicular to the feeding direction in the zigzag seam

19. Needle spacing needle gauge

needle spacing:

refers to the distance between the center lines of two adjacent needles on a multi needle sewing machine

outer needle spacing:

refers to the distance between the center lines of the outermost two needles on a multi needle sewing machine

20. When sewing with floating thread 1oose stitch

the suture constituting the stitch cannot closely fit the sewing material. The phenomenon of continuous or discontinuous loops formed when the suture is not tightened on the bottom of the sewing material is called towel shaped floating line

21. Thread jamming

the sewing thread is stuck by the hook part of the sewing machine during the sewing process. For example, thread sticking on a flat sewing machine refers to the phenomenon that the sewing thread is stuck by the rotary hook

22. Thread fraying

during the sewing process, when the suture passes through the thread passing part at high speed, some fibers of the suture will be worn out due to the unsmooth thread passing part of the thread passing part of the thread passing part, resulting in the phenomenon of loose suture fibers and the exposure of individual fibers on the suture surface

23. The stitch is skewed. When sewing in a straight line, the stitch is not parallel to the feeding direction; During zigzag sewing, one group of stitches is not parallel to the same another group of stitches. It is called thread skew

24. Skipped stitch

during sewing, the thread hook mechanism cannot hook the loop of the needle thread, making the thread

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