Trimming, presser foot lifting and tiny stitch sewing device of sewing machine and sewing machine
A technology for lifting the presser foot and sewing machines, which is applied to the control device for sewing machines, the mechanism for cutting threads in sewing machines, the needle seat for sewing machines, etc. It can solve the problems of low transmission efficiency, complex mechanical structure, and large space for sewing machines, and achieve simple structure The effect of compactness, high transmission efficiency and simplified structure
Active Publication Date: 2020-08-07
浙江杰克智能缝制科技有限公司
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Problems solved by technology
The mechanical structure of this driving method is complicated, the transmission efficiency is low, and it takes up a lot of space on the sewing machine. In addition, the electromagnet is hard-started, which will inevitably cause relatively large noise and vibration. Pads, etc.) due to large impact, poor durability
Method used
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[0043] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.
[0044] In the description of the present invention, it should be noted that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientations or positional relationships indicated by vertical, horizontal, top, bottom, inside, and outside are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying It is described, rather than indicated or implied, that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the term...
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The invention relates to the technical field of sewing machines, in particular to a trimming, presser foot lifting and tiny stitch sewing device of a sewing machine and the sewing machine comprising the same. The trimming, presser foot lifting and tiny stitch sewing device of the sewing machine comprises a power part, a trimming cam and a transmission assembly, wherein the power part drives the trimming cam and the transmission assembly to synchronously rotate, the transmission assembly drives a presser foot lifting and tiny stitch sewing driving shaft to rotate, the presser foot lifting and tiny stitch sewing driving shaft is provided with a presser foot lifting crank and a tiny stitch sewing cam, a trimming contour surface on the trimming cam can be matched with a trimming ball on a trimming driving crank, the trimming driving crank is driven to rotate and drives a trimming mechanism to execute trimming action, the rotation of the presser foot lifting crank can drive a presser foot lifting mechanism to execute the presser foot lifting action, and a tiny stitch sewing contour surface on the tiny stitch sewing cam can drive a stitch length adjusting mechanism to execute the stitchlength adjusting action so as to realize the tiny stitch sewing function. Three functions of trimming, presser foot lifting and tiny stitch sewing are realized by driving of the power part, the structure is simple and compact, the transmission efficiency is high, and the stability is good.
Description
technical field [0001] The invention relates to the technical field of sewing machines, in particular to a sewing machine thread trimmer, presser foot, and dense stitching device and a sewing machine. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the fabric to interweave or sew one or more layers of sewing material. The sewing machine is usually composed of four parts: the feeding device, the base, the transmission and the accessories. Through the reasonable coordination of the movement of each mechanism, the cyclic work is performed to sew the sewing material. [0003] At present, the sewing machine will use automatic thread trimming, automatic presser foot lift and dense stitching functions during the sewing process. It is common to use three electromagnets with different powers to drive the thread trimming mechanism, the presser foot lifting mechanism and the needle distance adjustment mec...
Claims
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IPC IPC(8): D05B65/00D05B29/02D05B55/12D05B55/14D05B69/10D05B69/02
CPCD05B65/00D05B29/02D05B55/12D05B55/14D05B69/10D05B69/02
Inventor 黄明学林晓晓
Owner 浙江杰克智能缝制科技有限公司