Presser foot mechanism with upper thread clamping function

Abstract

The invention discloses a presser foot mechanism with an upper thread clamping function. The presser foot mechanism comprises a presser foot, wherein the presser foot is arranged on a needle bar frame, the needle bar frame is arranged on a machine head, the machine head is further provided with a thread hooking plate, the lower end of the thread hooking plate is arranged to be in a hook shape, thethread hooking plate is connected with a driving mechanism used for driving the thread hooking plate to move back and forth and enabling the lower end of the thread hooking plate to achieve the operation of hooking a thread, the presser foot is provided with a presser foot elastic piece and a thread clamping pin, the thread clamping pin is fixed to the presser foot, one end of the presser foot elastic piece is matched with the presser foot in a hinged mode, the presser foot elastic piece is connected with an elastic piece which enables the other end of the presser foot elastic piece to abut against the outer circumferential face of the thread clamping pin, and when the thread hooking plate moves back and forth, the lower end of the thread hooking plate correspondingly penetrates through the space between the other end of the presser foot elastic piece and the outer circumferential face of the thread clamping pin. By the adoption of the structure, the upper thread clamping part is simple in structure, clamping of an upper thread is achieved without additionally arranging the driving mechanism, meanwhile, the upper thread clamping structure is integrated on the presser foot, and thewhole machine head structure becomes compact, and is small in occupied space and also convenient to install.

Description

technical field [0001] The invention relates to the technical field of embroidery machines, in particular to a presser foot mechanism with upper thread clamping. Background technique [0002] At present, the presser foot on the embroidery machine is a part that completes the cloth pressing action during the embroidery process of the embroidery machine, and the hooking plate on the embroidery machine is a part that cooperates with the thread trimming device, that is, when the thread needs to be trimmed, the embroidery machine stops working and the hooking The thread plate moves back and forth under the action of the corresponding driving mechanism, thereby evoking the upper thread on the cloth that needs to be cut, and then realizes the thread cutting operation under the action of the thread cutting device. In this process, an upper thread clamping device is also arranged on the head of the embroidery machine to clamp the raised upper thread so as to facilitate the thread tri...

AI Technical Summary

Problems solved by technology

In this process, an upper thread clamping device is also arranged on the head of the embroidery machine to clamp the raised upper thread so as to facilitate the thread trimming operation, but most of the existing upper thread clamping devices have complex structures and When clamping, a corresponding power mechanism is required to drive. For example, the relevant document application number is: CN201620415947.3, which discloses an upper thread clamping device and an embroidery machine head. The disclosed upper thread clamping device includes a fixed The frame and a row of moving rods that move through the fixed frame, the moving blocks are fixed on the moving rods, and the concave-convex guiding structures that guide each other forward and backward are arranged between adjacent moving blocks. The structure is quite complicated and requires electromagnetic Iron and other electromagnetic components are used to cooperate to realize the clamping of the upper thread, which will increase the production cost and complicate the operation

At the same time, the existing upper thread clamping device installed in the machine head will interfere with the existing punching mechanism on the machine head, so it can only be installed externally on the machine head, resulting in an increase in the space occupied by the machine head

In addition, the existing presser feet still have defects such as insufficient structural strength, easy bending under force, and unreliable installation.

Images