Keyhole sartorius

A sewing machine and buttonhole technology, which is applied to sewing machine components, sewing machine casings, sewing equipment, etc., can solve the problems of sewing obstacles, heating of the driving part, insufficient supply of lubricating oil, etc., and achieve the effect of rapid recovery.

Active Publication Date: 2007-01-31
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there is a problem that the lubricating oil cannot be supplied sufficiently, and the driving part generates heat, which causes failure and wear.
Especially when a large number of thread ends a

Method used

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  • Keyhole sartorius
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  • Keyhole sartorius

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Hereinafter, the present invention will be described in detail with reference to the drawings showing preferred embodiments.

[0029] The buttonhole sewing machine shown in the figure has a thread end recovery chamber integrally formed inside the front end of the machine base, and the thread ends generated by the thread cutting device cut by the thread cutting device are sent out by the rotation of the looper base and recovered in the thread end recovery chamber.

[0030] Such as Figure 1 ~ Figure 3 As shown, the buttonhole sewing machine 1 has: a rectangular box-shaped machine base with an open upper part 2, a bottom plate 3 placed on the open part of the machine base 2 in an embedded shape, and a column 4 rising from the upper rear part of the bottom plate 3 , And a machine case 5 extending forward from the upper part of the column 4, and the buttonhole sewing machine 1 is mounted and fixed on a sewing machine table not shown.

[0031] At the lower part of the front end o...

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PUM

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Abstract

The invention enables the prevention of the stain of a drive mechanism due to the lint without having any bad influences upon a drive section or a sliding section of the drive mechanism by certainly collecting the lint generated by the thread cutting. A boxy lint collecting chamber is integrally formed at a front end section of a bed table and a forward slope type bridge board member is fixed to a front end of a bed frame. A lint collecting member disposed on a looper foundation is moved to the back by the turning of the looper foundation following the sewing of an eyelet hole darning seam and when the looper foundation is regressively turned to the original sewing commencement position after the tread cutting action by a thread cutting device, the lint collecting member is regressively turned at the same time and moves the lint which is generated by the cutting towards the lint collecting chamber so that the lint is automatically collected in the lint collecting chamber in the manner of sliding on the bridge board member.

Description

technical field [0001] The present invention relates to a buttonhole sewing machine, in particular to a buttonhole sewing machine with a thread recovery chamber for recovering thread ends generated when a thread cutting device attached to a feeding table moving on a bottom plate performs a thread cutting action. Background technique [0002] A buttonhole sewing machine for sewing round-end buttonhole stitches has a needle bar up and down movement mechanism, a needle swing mechanism, a looper driving mechanism and a thread take-up mechanism. In this keyhole sewing machine, the upper shaft is driven by the sewing machine motor to rotate, and the rotation of the upper shaft is transmitted to various mechanisms. With the action of the needle bar up and down movement mechanism and the needle swing mechanism, the needle bar is separated by a predetermined swing width. Alternately move up and down on the position of the looper, and at the same time, through the action of the looper...

Claims

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Application Information

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IPC IPC(8): D05B3/06D05B73/00
Inventor 清水靖宏
Owner BROTHER KOGYO KK
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