Sewing machine cloth pressing device

Abstract

The invention provides a fabric pressor for a sewing machine which comprises: a pressor bar which is supported by the arm part of a sewing machine body, so as to be vertically movable, and is normally energized to be pushed down by spring members; two main pressor feet which are respectively attached to the lower end of the pressor bar side by side in a direction to be orthogonally crossed with the fabric feeding direction, so as to be vertically movable, having notched groove parts arranged in the fabric feeding direction from the near side of the fabric feeding direction; and a plurality of auxiliary pressor feet which are respectively stored in the groove parts of the respective main pressor feet, pivotally supported to the near side of the groove parts, so as to be freely rotatable concerning each base part, energized by the spring members, so as to pressurize the fabric concerning each distal end part, provided with needle drop holes at the distal end parts, and equipped with fabric pressure surfaces in the periphery of the needle drop holes, which are formed to be a downward projecting curved surface.

Description

technical field [0001] The present invention relates to a cloth pressing device for a sewing machine, which can always press the cloth even when the thickness of the sewing cloth changes in the direction perpendicular to the feeding direction of the cloth and in the same direction as the feeding direction of the cloth. Press the fabric firmly for proper sewing. Background technique [0002] As a cloth pressing device of a conventional sewing machine, there is a device that can reliably press the cloth and perform proper sewing even when the thickness of the cloth varies in the same direction as the cloth feeding direction of the sewing cloth (refer to the patent document 1). [0003] Such as Figure 18 As shown, this cloth pressing device combines an auxiliary presser foot 61 with a main presser foot 60 . The main presser foot 60 is attached to the lower end of the press bar 62 , and a groove portion 63 is cut from the front side in the cloth feeding direction X toward the...

AI Technical Summary

Problems solved by technology

[0010] On such a sewn cloth whose cloth thickness varies in the direction perpendicular to the cloth feeding direction X and in the same direction as the cloth feeding direction X, even if the cloth pressing device described in Patent Document 1 is used in the same direction as the cloth feeding direction X, The cloth can not be pressed corresponding to the cloth thickness change in the direction X, and the cloth cannot be pressed corresponding to the cloth thickness change in the direction perpendicular to the cloth conveying direction X, and even if the cloth pressing device described in Patent Document 2 is used to correspond to the cloth Even if the cloth is pressed with varying thickness in the direction perpendicular to the feeding direction X, the cloth cannot be pressed according to the changing thickness of the cloth in the same direction as the feeding direction X. Therefore, skipped stitches or thread breakage may occur in both cases. Uneven etc.

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