A kind of sewing machine and its feeding mechanism

Abstract

The invention discloses a conveying mechanism of a sewing machine. The mechanism comprises a rotatable main shaft, a conveying eccentric wheel rotatably installed on the main shaft, a fixing wheel fixed to the main shaft, a connection assembly installed on the main shaft an adjustment assembly selectively clamped to a connection disc, one end of the connection assembly is clamped to the end of theconveying eccentric wheel, and the other end of the connection assembly is selectively in occlusion with the fixing wheel. The adjustment assembly is released, the connection assembly is in occlusionwith the fixing wheel, the relative angle of the main shaft and the conveying eccentric wheel is fixed, the conveying action is standard, when a take-up-lever conducts collection, a thread is not clamped by a sewing material and a needle plate, the thread collection resistance is small, and the sewing machine is suitable for sewing the medium-thickness sewing material; by pressing the adjustmentassembly, the connection assembly is separated from the fixing wheel, the relative angle of the main shaft and the conveying eccentric wheel is changed, the conveying action is advanced, when the take-up-lever conducts collection, the thread is clamped by the sewing material and the needle plate, the thread collection resistance is large, the sewing machine is suitable for sewing the thin sewing material, and the adaptability is good. The invention further discloses the sewing machine with the conveying mechanism.

Description

technical field [0001] The invention relates to the field of clothing equipment, in particular to a feeding mechanism of a sewing machine. The invention also relates to a sewing machine. Background technique [0002] Common sewing machine usually includes four kinds of stabbing material mechanism, thread hook mechanism, thread take-up mechanism and feeding mechanism, wherein, thread take-up mechanism includes the thread take-up lever that drives suture to pierce the sewing material and passes needle plate. refer to Figure 1 to Figure 4 , the feeding mechanism includes the feeding eccentric cam 02 fixed on the main rotating shaft 01, the feeding link assembly 03 and the lifting link assembly 04 fixed on the feeding eccentric cam 02, and also includes the teeth installed at the end of the feeding link assembly 03. The frame 05, the tooth lifting crank 06 installed at the end of the tooth lifting link assembly 04, and the teeth 07 connected between the tooth frame 05 and the ...

AI Technical Summary

Problems solved by technology

[0005] However, since the feeding eccentric cam 02 and the main rotating shaft 01 of the existing feeding mechanism are relatively fixed, the phase angle between the feeding eccentric cam 02 and the main rotating shaft 01 is fixed, and the thickness of the sewing material suitable for sewing is limited, and it is difficult to To meet the current diversified and efficient production needs, therefore, the adaptability of the existing feeding mechanism is poor

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