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Presser foot lifting and thread loosening mechanism and sewing machine

A presser foot lifter and sewing machine technology, applied in the field of presser foot lifter, thread loosening mechanism and sewing machine, can solve the problems of inflexible use, affect work efficiency, inconvenient use, etc., achieve simple and convenient use, ensure work efficiency, and reduce wear Effect

Pending Publication Date: 2021-08-13
ZHEJIANG DUMA SEWING MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a presser foot lifting and thread loosening mechanism and a sewing machine. The driving cam drives the presser foot lifting lever and the thread loosening plate respectively through the presser foot lifting lever and the presser foot lifting drive plate to realize the independent operation of thread loosening. Or the common operation of thread loosening and presser foot lifting solves the problem of inconvenient use and inflexible use caused by the integrated molding of the original design, which affects work efficiency.

Method used

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  • Presser foot lifting and thread loosening mechanism and sewing machine
  • Presser foot lifting and thread loosening mechanism and sewing machine
  • Presser foot lifting and thread loosening mechanism and sewing machine

Examples

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Embodiment Construction

[0052] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0053] like figure 1 and figure 2 As shown, a sewing machine includes a frame 1, and a presser foot lifter and a thread release mechanism are installed on the head of the frame 1. The presser foot lifter and thread release mechanism include a presser foot lifting lever 10, a thread release plate 8, Lifting presser foot drive plate 7 and drive motor 2;

[0054] like figure 2 As shown, the presser foot lifting lever 10 is hinged on the frame 1, and the frame 1 is also vertically installed with a presser foot rod 12, the lower end of the presser foot rod 12 is installed with a presser foot, and the presser foot rod 12 and the presser foot lifting lever 10 are connected They are connected by the presser foot lifting plate 11, so that the rotation of the presser foot lifting lever 10 can lift the presser foot.

[0055] The presser f...

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Abstract

The invention relates to the technical field of sewing machines, in particular to a presser foot lifting and thread loosening mechanism and a sewing machine. The presser foot lifting and thread loosening mechanism of the sewing machine is arranged on the head part of a machine frame and comprises a presser foot lifting lever, a thread loosening plate, a presser foot lifting driving plate and a driving motor, and the presser foot lifting lever is hinged to the machine frame and used for lifting a presser foot; the thread loosening plate is used for pushing a thread clamping device to perform thread loosening action; the presser foot lifting driving plate is used for driving the presser foot lifting lever; the driving motor is used for driving a driving cam, and the driving cam pushes the presser foot lifting driving plate and the thread loosening plate to move; one end of the presser foot lifting driving plate is hinged and linked with one end of the thread loosening plate, and a certain distance is formed between the other end of the presser foot lifting driving plate and the presser foot lifting lever; and under the driving of the driving cam, the other end of the presser foot lifting driving plate is contacted with and drives the presser foot lifting lever after rotating towards the presser foot lifting lever by a certain angle. The problems of inconvenience and inflexibility in use and influence on working efficiency caused by integral forming in the original design are solved.

Description

technical field [0001] The invention relates to the technical field of sewing machines, in particular to a presser foot lifting and thread loosening mechanism and a sewing machine. Background technique [0002] Thread grippers are generally provided on existing sewing machines. The function of the thread clamp is to clamp the thread when the sewing machine is working, so that the thread has a proper tightness; when the thread is trimmed automatically after sewing, the thread clamp cannot be automatically released, you need to set The thread release device controls the thread tensioner to release automatically. [0003] The sewing machine is also provided with a presser foot device. The presser foot is pressed above the sewing material when the sewing machine is working, and the action of lifting the presser foot is driven by the presser foot lifting device. [0004] Chinese invention patent 2019102043358 discloses a sewing machine and a presser foot lifter thread release ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02D05B47/04
CPCD05B29/02D05B47/04
Inventor 阮孟定
Owner ZHEJIANG DUMA SEWING MACHINE
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