Feed dog inclination adjusting mechanism and sewing machine

Abstract

The invention provides a feed dog inclination adjusting mechanism. The feed dog inclination adjusting mechanism comprises a feed dog holder, a feed dog mounted at one end of the feed dog holder, a slide block in sliding fit with the other end of the feed dog holder, and an eccentric shaft, and further comprises an adjusting shaft rotatably mounted inside a shell of the sewing machine, wherein theeccentric shaft comprises a first shaft part and a second shaft part which are in eccentric arrangement; the first shaft part is rotatably inserted into the slide block; a rotating operation part positioned outside the shell is arranged at one end of the adjusting shaft; the other end of the adjusting shaft is connected with the second shaft part of the eccentric shaft through a transmission assembly; when the rotating operation part of the adjusting shaft is rotated, the adjusting shaft drives the second shaft part of the eccentric shaft to rotate through the transmission assembly. In the feed dog inclination adjusting mechanism, through the rotation of the rotating operation part of the adjusting shaft, the eccentric shaft can be driven to rotate so as to adjust the inclination of the feed dog; the rotating operation part of the adjusting shaft is positioned outside the shell, so that during operation, the operation of opening a sewing table, unscrewing fixing bolts and the like is not required and only direct rotation of the rotating operation part is required, and the operation is very convenient, fast and efficient.

Description

technical field

[0001] The invention relates to a mechanism for adjusting the inclination angle of a cloth feeding dog.

[0002] The present invention also relates to a sewing machine comprising the above-mentioned feed dog inclination angle adjustment mechanism. Background technique

[0003] At present, in the sewing process for different fabrics, it may be necessary to adjust the inclination angle of the feed dog to achieve a stable and excellent sewing effect, such as: no wrinkle for thin materials, high feeding efficiency for thick materials, etc. The structure of the existing feed dog inclination adjustment mechanism is as follows: figure 1 with figure 2 As shown, it has a tooth frame 200 that can swing around the main shaft 100 in the sewing machine, a cloth feeding dog 300 fixedly installed on the rear end of the tooth frame 200, a slider 400 that is slidably matched with the front end of the tooth frame 200, and is rotatably installed on the sewing machine. The e...

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