Stitch forming method and device

A technology of stitches and flat seams, which is applied in the field of stitch formation and devices, can solve the problems of low work efficiency, inability to form long stitches, and poor durability, and achieve the goals of improving sewing efficiency, good impact resistance, and improving product quality Effect

A technology of stitches and flat seams, which is applied in the field of stitch formation and devices, can solve the problems of low work efficiency, inability to form long stitches, and poor durability, and achieve the goals of improving sewing efficiency, good impact resistance, and improving product quality Effect

CN1412370AInactive Publication Date: 2003-04-23JUKI CORP
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  • Stitch forming method and device
  • Stitch forming method and device
  • Stitch forming method and device

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Below, combine Figure 1 to Figure 5 , Embodiment 1 of the present invention will be described.

[0041] The cloth feeding device 29 shown in FIG. 2 has the same structure as the cloth feeding mechanism of conventionally known sewing machines in principle. 9 is the main shaft of the sewing machine, and 10 is an eccentric cam arranged on the main shaft 9.

[0042] 11 is a feed amount changer, the central part of which is rotatably supported by a not-shown sewing machine bed via a shaft 12 . At the left end of the feed amount changer 11, the roots of the two connecting rods 13 and 14 of equal length are rotatably supported on the coaxial shafts 13A and 14A, and the front ends of the two connecting rods 13 and 14 are connected to a common on axis 15. The cloth feeding adjustment mechanism is composed of the cloth feeding amount converter 11, connecting rods 13, 14, shafts 12, 14, etc.

[0043] 16 is a direct drive motor fixed on the sewing machine frame not shown, and ...

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Abstract

The invention provides a method and device for forming stitches of a sewing machine. According to an object of the invention, in thick skin of a vehicular sheet or furniture, when top sides of two sheets of sewing materials are aligned, ends thereof are sewn together and thereafter, the sewing materials are split to open by putting a sewing portion thereof on an inner side, the sewing materials are sewn together such that stitch thread does not appear at the top sides of the sewing materials. A stitch is continuously formed in cloth by repeating operation of forming a plurality of stitches by feeding the cloth in one direction by (n+1) stitches to a sewing machine for forming lock stitch by a cloth feed apparatus and thereafter feeding the cloth by n stitches in a direction reverse to the one direction by the same feed amount.

Description

technical field [0001] The present invention relates to a stitch forming method and device of a sewing machine, especially in sewing thick leather objects such as car seats and furniture, after the ends of two pieces of sewing material are joined together and the ends are stitched together, the seam Stitch forming method and device for sewing materials used when the sewing material is unfolded and the seaming part is placed inside. Background technique [0002] Conventionally, in the case of using a sewing machine to perform the above-mentioned sewing, for example Figure 7 As shown, firstly, the surfaces of the upper cloth W1 and the lower cloth W2 are overlapped, and then through the cooperation of the needle and the hook, the upper and lower cloths are formed on the side ends as shown in Fig. Figure 8 The shown lockstitch stitch consisting of upper thread NS and lower thread US accomplishes the seaming of the side end. Then, if Figure 9 As shown, it is used in a state...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

Patent Timeline
23 Apr 2003
Publication
CN1412370A
IPC
D05B23/00; B60N2/58; D05B1/12
CPC
B60N2/5883; D05B1/12; D05B23/00
Inventors
西修宏; 麻生英夫