Sewing machine

A sewing machine and stepping motor technology, applied in the field of sewing machines, can solve the problems of complex overall functional structure, large impact force, and large overall body volume, and achieve the effects of simplifying the electromagnet system, reducing vibration noise, and simplifying the space of the mechanism

Pending Publication Date: 2020-08-28
浙江广和缝纫机有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, during the use of sewing machines, it is necessary to lift the presser foot and adjust the stitch distance. In the existing structure, some will generate relatively large noises. In the middle, there will be a large impact force, which will cause the noise and vibration of the whole machine, which cannot be avoided by traditional structures; , the height of the presser foot is the highest, and the adjustable effect of the height of the presser foot cannot be realized. At the same time, the electromagnet produces a large impact when it is in the high-engagement state, which has a large negative effect on the noise and vibration of the whole machine; at the same time, due to the general The sewing machine presser foot lifting system uses an electromagnet system, which makes the overall structure very large, the overall functional structure is complex, and the cost is high, which hinders the upgrading space of the sewing machine

Method used

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Embodiment Construction

[0024] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0025] refer to Figure 1-Figure 5 , the present embodiment is a sewing machine, including a casing 1, a base plate 2, a stepping motor 3, a presser foot assembly and a swing seat 10 for adjusting the stitch distance, and the stepping motor 3 is used to drive the presser foot lifting assembly to complete lifting Action and drive the swing seat 10 to complete the rotation and swing action. The stepper motor 3 is connected with the presser foot lifter cam 11. The presser foot lifter cam 11 includes the stitch distance stroke surface 11a and the presser foot lifter stroke surface 11b. The presser foot lifter assembly includes the presser foot lifter Foot lever 4, presser bar 13 and presser foot 16, presser foot 16 is connecte...

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Abstract

The invention provides a sewing machine, belongs to the technical field of sewing machines and solves the problem that an existing sewing machine is large in working noise, complex in structure and complex in mechanism. The sewing machine comprises a pressure foot assembly, a stepping motor and a swing base for adjusting a needle pitch. The stepping motor is used for driving the pressure foot lifting and pushing assembly and driving the swing seat to rotate to swing. A pressure foot lifting and pushing cam is connected to the stepping motor and comprises a needle pitch stroke surface and a pressure foot lifting and pushing assembly stroke surface. The pressure foot lifting and pushing assembly comprises a pressure foot lifting and pushing lever, a pressure bar and a pressure foot. The pressure foot is connected to the bottom end of the pressure bar, one end of the pressure foot lifting and pushing lever is connected to the pressure bar through a linking mechanism, and the other end ofthe pressure foot lifting and pushing lever is matched with the pressure foot lifting and pushing stroke surface. The needle pitch and the pressure foot lifting and pushing foot of the sewing machineare more controllable.

Description

technical field [0001] The invention belongs to the technical field of sewing machines, and relates to a sewing machine. Background technique [0002] At present, during the use of sewing machines, it is necessary to lift the presser foot and adjust the stitch distance. In the existing structure, some will generate relatively large noises. In the middle, there will be a large impact force, which will cause the noise and vibration of the whole machine, which cannot be avoided by the traditional structure; some structures are separated and controlled independently, such as the ordinary presser foot lifting structure is driven by an electromagnet, and the electromagnet is pushed to the end in the working state , the height of the presser foot is the highest, and the effect of adjusting the height of the presser foot cannot be realized. At the same time, the electromagnet produces a large impact when it is in the high-engagement state, which has a large negative effect on the no...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): D05B27/22D05B29/02
CPCD05B27/22D05B29/02
Inventor卢律何
Owner浙江广和缝纫机有限公司