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Knee abutting presser foot lifting device of sewing machine

A presser foot lifting and sewing machine technology, applied in the field of clothing manufacturing equipment, can solve the problems of easy damage, frequent, unreasonable transmission structure design, etc., and achieve the effects of reducing labor intensity, sensitive response, and obvious resistance change

Active Publication Date: 2019-04-16
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above patent documents, the drive source assembly is used to lift the presser foot automatically, but due to the unreasonable design of the transmission structure, frequent and high-speed presser foot lifts are prone to damage and other faults

Method used

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  • Knee abutting presser foot lifting device of sewing machine
  • Knee abutting presser foot lifting device of sewing machine
  • Knee abutting presser foot lifting device of sewing machine

Examples

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Embodiment Construction

[0035] 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.

[0036] Such as figure 1 and figure 2 As shown, the sewing machine includes a compression rod 1 and a small presser foot 2 arranged at the lower end of the compression rod 1. A compression spring 3 is sleeved on the compression rod 1. The lifting front lever 4 and the lifting pull rod 5 that drives the lifting front lever 4 to swing, the end of the lifting pull rod 5 is connected with the lifting rear lever 6, and the presser foot lifting device also includes an electromagnet 7 that can drive the lifting rear lever 6 to swing, a rotatable Knee control hinge shaft 8 and the knee plate 11 that pushes the knee control hinge shaft 8 to rotate, the output shaft of the electromagnet 7 is connected with the middle part of the li...

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Abstract

The invention provides a knee abutting presser foot lifting device of a sewing machine, and belongs to the technical field of clothing making equipment. The technical problem that an existing knee abutting presser foot lifting device is likely to be damaged is solved. The sewing machine comprises a pressing rod and a small presser foot arranged at the lower end of the pressing rod. A pressing spring sleeves the pressing rod, the presser foot lifting device comprises a lifting front lever and a lifting pull rod for driving the lifting front lever to swing, the end of the lifting pull rod is connected with a lifting rear lever, and the presser foot device further comprises an electromagnet, a knee controlled hinge shaft and a knee abutting disc. An output shaft of the electromagnet is connected with the middle of the lifting rear lever through a pull rod crank, the end of the knee controlled hinge shaft is connected with a rheostat, a limiting frame is arranged on the knee controlled hinge shaft, and a jacking assembly is arranged between the limiting frame and the lifting rear lever. The end of the jacking assembly is connected with the end of the lifting rear lever. The knee abutting presser foot lifting device saves more labor and is not likely to be damaged.

Description

technical field [0001] The invention belongs to the technical field of garment manufacturing equipment, and relates to a sewing machine, in particular to a knee rest presser foot lifting device of the 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 sewing material to interweave or sew one or more layers of sewing material. The sewing machine can sew fabrics such as cotton, fiber crops, silk, wool, and artificial fibers, and products such as leather, plastics, and paper. The presser foot is an important part on the sewing machine. The working process of the sewing machine needs to lift the presser foot of the sewing machine. At present, the sewing machine has two modes of operation, manual and automatic, to lift the presser foot. The manual presser foot lift method is to manually drive the corresponding manual transmission mechanism to lift the presser foot, and the automatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02
CPCD05B29/02
Inventor 金丰东黄忠亮李军飞鲁亚东
Owner JACK SEWING MASCH CO LTD
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