机针、缝线和缝料的配合（图 8）/ Matching Of Needle, Suture And Sewing Material（Fig 8; 穿面线（图 9）/ Noodle Thread（Fig 9 - Jack H2 Series Product Instruction Manual

8.机针、缝线和缝料的配合（图 8）/ Matching of needle, suture and sewing material（Fig 8）
面线采用左捻线，底线则左、右捻均可使用，
缝线捻向的鉴别，可按图十所示把缝线捏住，以右
手按图箭头方向搓转缝线，若线股越搓越紧，则是
左捻线，反之即为右捻线。
请使用 DP×17 型或 135×17 型机针， 机针
的粗细应适合缝料的性质。如用过细的机针缝制紧
厚的织物，机针就容易折断，也会引起跳针、断线
等现象。相反如果用过粗的机针缝制紧密的织物，
则会因针孔太大而损坏织物。所以应根据缝料性质
不同，机针和缝线的粗细都要适当地进行选择。
The upper thread is left-twisted, and the bottom
thread can be twisted left or right. To identify the twisting direction of the suture, you can pinch the suture as
shown in Figure 10 and twist the suture in the direction of the arrow with your right hand. The tighter the twist,
the left twist, and the opposite is the right twist.
Please use DP×17 or 135×17 needles. The thickness of the needle should be suitable for the nature of the
sewing material. If you use a needle that is too thin to sew tight and thick fabrics, the needle will easily break,
and it will also cause skipped stitches and thread breakage. On the contrary, if a thick needle is used to sew tight
fabrics, the fabric will be damaged due to too large needle holes. Therefore, the thickness of the needle and
thread should be appropriately selected according to the nature of the sewing material.
9.穿面线（图 9）/ Noodle thread（Fig 9）
穿面线时针杆应在最高位置，然后将线架上引出线头按
顺序穿线。
( a ) 穿过上面三孔线勾①。
( b ) 穿过机壳上部小夹线过线板②上的左过线孔，再
通过小夹线板，然后穿过小夹线过线板②上的下过线孔。
( c ) 在夹线座的夹线板③之间通过。
( d ) 向上穿过挑线簧④，经过大线勾⑤和线勾⑥，向上从
右向左穿过挑线杆⑦的穿线孔。
( e ) 向下通过面板线勾⑧，下线勾⑨，及针杆过线环⑩，
从左面穿过孔机针⑾的针孔，并引出 100 毫米左右的线备
用。引底线时，先将面线头捏住，转动主动轮使 针杆向下
运动，再回升到最高位置，然后拉起捏住的面线线头，底线
即被牵引上来，最后将底、面二根线头一起置于压脚下前方
When threading the upper thread, the needle bar should be at
the highest position, and then thread the thread ends on the thread
stand in order.(a) Pass through the upper three-hole hook ①.(b) Pass through the left thread hole on the small thread
clamping plate ② on the upper part of the casing, then pass the small thread clamping plate, and then pass through
the lower thread hole on the small thread clamping plate ②.(c) Pass between the thread tension plates ③ of the
thread tension seat.(d) Pass the thread take-up spring ④ upwards, pass the large thread hook ⑤ and the thread
hook ⑥, and pass the thread take-up lever ⑦ upwards from right to left. (e) Go down through the panel thread hook
⑧, lower thread hook ⑨, and needle bar thread passing ring ⑩, pass through the needle hole of the hole machine
needle ⑾ from the left, and draw out a thread of about 100 mm for use. When drawing the lower thread, first pinch
the upper thread end, turn the driving wheel to move the needle bar downward, and then return to the highest
position, then pull up the pinched upper thread end, the lower thread is pulled up, and finally the bottom and upper
thread .The thread ends are placed together in front of the presser foot.
8
5
1
2
7
6
3
4
5
9
10
11
8
9