1. What are the methods of machine thread lock?
Answer: There are two types of machine lock lines: flat lock and cross lock.
2. What is a machine lock?
Answer: Flat lock is the same method of thread lock for each thread.
3. What is the working principle of the machine flat lock?
Answer: The working principle of the machine flat lock is to use a threading needle (sewing needle) and a crochet needle (crochet needle) to form a group at intervals. The threading needle introduces the yarn into the middle of the signature along the seam. The thread claw (hook claw) Or spool valve) pull the thread to the position where the crochet needle is lowered. The crochet needle uses the groove to hook the yarn and then twists 1800 to rise and pulls from the signature to the outside of the stitching to form a loop, then use the crochet needle The torsion of the coil automatically sets the coil into a knot (forming a braid knot), tightly locking the posts. After the flat lock book is locked, the yarn is in the middle of the signature, and the coils and threads are regularly arranged on the outer fold of the signature to form a flat rubber braid.
4. What is a machine cross lock?
Answer: The machine cross lock, also known as jump lock or cable lock. In a book that is cross-locked, the yarn position of each post is indirectly the same, singular numbers 1, 3, 5 and even numbers 2. 4.6 Book signatures are alternately locked lines, as shown in Figure 2. Because the movable needle jumps left and right when the thread is locked, it is also called jump lock.
5. What is the working principle of machine cross lock?
Answer: The machine cross-lock is composed of 1 movable threading needle (living needle), 2 crochet needles (1 threading needle on the left: 1 on the right), and 3 needles (3 needles) to form a group for thread locking of. The movable threading needle is driven by the draw board (needle board) to reciprocate left and right, and the yarn is transferred to the left and right side thread needles, indirectly locked into the book.
6. What are the positioning requirements for signatures?
Answer: There are two positioning rules for the signatures, which are on the backboard. The positioning requirements: (1) regular positioning, which should be determined according to the length of the book format, and its position should be matched with the position of each pinhole on the top; (2) the position of the pulling rule should be based on the pull of the tongue to pull the signature in place; (3 ) The rear is slow; the middle regulation and the front pull regulation should be on the same line; (4) After the front and rear regulations are adjusted correctly, it is necessary to stop and observe whether it is correct, and then start the line lock after correcting.
7. What are the standing tools of the thread locker?
Answer: (1) Large, medium and small screwdrivers; (2) Casing wrench; (3) Hexagon wrench; (4) 14.17, 19, 22 or adjustable wrench; sewing needle (for repairing the original); ( 5) Scissors.
8. What are the vulnerable parts of the thread locker?
Answer: (1) Threading needle; (2) Crochet needle; (3) Small belt for sending the post wheel; (4) Rubber suction nozzle.
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