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Top thread keeping device of sewing machine

A technology of holding device and sewing machine, applied in the direction of thread cutting mechanism, sewing machine components, sewing equipment and other directions in sewing machines, can solve problems such as poor aesthetics, and achieve the effect of improving aesthetics and shortening length

Active Publication Date: 2014-01-15
JUKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, a length ( Figure 32 The upper thread T in the range of the arrow Q) remains on the back side of the needle plate 101. Since the upper thread T will be caught during sewing, as in Figure 33 Poor aesthetic stitches that may become so-called "bird's nests" as shown

Method used

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  • Top thread keeping device of sewing machine
  • Top thread keeping device of sewing machine
  • Top thread keeping device of sewing machine

Examples

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Embodiment Construction

[0098] Next, embodiments of the needle thread holding device according to the present invention will be described with reference to the drawings. In addition, when describing the structure of each component of the sewing machine body including the needle thread holding device of the present invention, in this embodiment, each direction is determined by the XYZ axes shown in the figure, and the sewing machine width direction is defined as the X direction, The longitudinal direction of the arm portion 33 perpendicular to the X direction is defined as the Y direction, and the direction perpendicular to both the X direction and the Y direction is defined as the Z direction. In particular, the + side in the X direction is represented as right, and the − side is represented as left; the + side in the Y direction is represented as front, and the − side is represented as rear; the + side in Z direction is represented as up, The - side is represented as down.

[0099] Such as figure...

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Abstract

The invention provides a top thread keeping device of a sewing machine, the device can prevent the top thread from involving into a stitch trace, thereby improving the beauty of the thread trace. The top thread keeping device of the sewing machine comprises the following structures: a cutter portion cutting the top thread and configured close to the needle hole; a top thread keeping portion keeping the top thread passing the needle hole; a control portion controlling the driving mechanism of the top thread keeping portion. The top thread keeping portion comprises the following structures; a first keeping portion with a front end portion capable of freely moving back and forth along a Y direction; a second keeping portion capable of freely contacting with / separating from the front end portion of the first keeping portion in the Y direction, and the first and second keeping portions commonly keeps the top thread. The control portion employs the first and second keeping portions to clamp the top thread, and configures the top thread to be close to the cutter, and when the sewing machine finishes a set needle number, the first and second keeping portion are kept away from the needle hole under the condition that the top thread is firmly clamped, thereby enabling the cutter portion to cut off the top thread.

Description

technical field [0001] The invention relates to an upper thread holding device of a sewing machine. Background technique [0002] There is known a needle thread holding device, which in order to reliably form the stitches at the beginning of sewing and to stabilize the length of the needle thread remaining on the needle point at the beginning of sewing, at the beginning of sewing, firstly, a kettle is inserted to the The end of the upper thread in one sewing needle is pulled out to the back side of the needle plate, and then the pulled end of the upper thread is clamped on the back side of the needle plate (for example, refer to Patent Document 1). [0003] Figure 32 It is a side view showing the relationship between the upper thread and the upper thread holding device. Such as Figure 32 As shown, the end of the upper thread T inserted into the sewing needle 100 is held by the upper thread holding device 102 under the needle plate 101 . During sewing, the upper thread ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B51/00D05B65/06
Inventor 小川达矢日塔隆高瀬秀纪薄井徹
Owner JUKI CORP
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