A presser foot with a secant knife

Abstract

The invention provides a presser foot with a thread cutter and belongs to the technical field of sewing machines. By means of the presser foot, the problem that a thread cutter of an existing presser foot is inconvenient to disassemble and assemble is solved. The presser foot with the thread cutter comprises a presser foot handle and a presser foot plate, the top of the presser foot plate is provided with two hinge joint parts, the bottom of the presser foot handle is located between the two hinge joint parts and hinged to the hinge joint parts, a central thread slot is formed in the front portion of the presser foot plate, a thread passing slot is formed in the middle of the presser foot plate, and the central thread slot is communicated with the thread passing slot. The thread cutter is arranged on the outer side wall of one of the two hinge joint parts and comprises a fixing part and a thread cutting part, one end of the thread cutting part is connected with the fixing part, and the thread cutting part is perpendicular to the fixing part. The fixing part is fixedly connected to the outer side walls of the hinge joint parts through a fastener, a cutter edge is arranged on the thread cutting part, the thread cutting part is located above the presser foot plate and the cutter edge is located over the thread passing slot. The presser foot with the thread cutter has the advantages of being convenient to disassemble and assemble.

Description

technical field [0001] The invention belongs to the technical field of sewing machines and relates to a presser foot with a thread cutter. Background technique [0002] When the sewing machine sews cloth, a certain length of thread ends must be left at the eye of the machine needle when sewing is started, so as to ensure that the end of thread will not slip out of the eye of the machine needle when sewing starts. A certain length of thread on the eye of the machine needle will stay at the initial position of the fabric when sewing to form a "bird's nest", which affects the appearance of the sewing material. [0003] In order to remove the "Bird's Nest", people have made various designs, and some have applied for patents. For example, Chinese patent literature discloses a sewing machine to remove the Bird's Nest and quickly change the knife with a presser foot [application number: 201511010609.8; Publication number: CN105420938A], it comprises presser foot handle, presser fo...

AI Technical Summary

Problems solved by technology

[0004] In the presser foot with knife of this structure, the blade is set in the blade groove between the two connecting parts, the blade is provided with a blade pressure plate, and the blade pressure plate is a presser handle, that is, the blade is fixed between the presser handle and the presser plate. When disassembling the blade, it is necessary to remove the pin shaft used to hinge the presser foot plate and the presser foot handle, then remove the entire presser foot plate, remove the blade pressure plate, take out the blade, replace the blade, and then press the blade pressure plate on the blade , and then move the presser foot plate to the designated position, insert the presser foot handle between the two connecting parts, and then screw on the pin shaft, so that the presser foot plate and the presser foot handle are hinged. It can be seen that the presser foot with knife of this structure Replacing blades is very troublesome

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