Needle bar presser foot device of computerized embroidery machine

Abstract

The invention relates to the field of computerized embroidery machines, in particular to a needle bar presser foot device of a computerized embroidery machine. The needle bar presser foot device comprises a needle bar mechanism, a rope coiling mechanism and a presser foot mechanism, wherein the needle bar mechanism comprises a needle bar, the needle bar is of a hollow structure, and a threading hole leading to the hollow structure is formed in the side wall of the needle bar; the rope coiling mechanism comprises a mounting plate, a rope coiling sleeve ring and a transmission sleeve, the presser foot mechanism comprises a spring, a presser foot member and a lifting and pressing member, the presser foot member penetrates into the transmission sleeve and the rope coiling sleeve ring, and thepresser foot member penetrates into the transmission sleeve in a structure that the presser foot member can move axially up and down but is not rotatable about the axis; the lifting and pressing member comprises a lifting pull bar and a lifting press bar, one end of the lifting press bar is a lower connecting end, the other end of the lifting press bar is a lower pressing top holding end, the lower end of the spring is held on the lower pressing top holding end, the lower end of the lifting pull bar is connected with the lifting press bar, the needle bar is provided with a lifting pull part, the upper end of the lifting pull bar is a lifting pull end, and the lifting pull part pushes the lifting pull end when the needle bar rises. The device is ingenious and reasonable in structure and canachieve the effects of effectively avoiding damage to a coiled rope and stabilizing the embroidery.

Description

technical field [0001] The invention relates to the field of computerized embroidery machinery, in particular to a needle bar presser foot device of a computerized disk embroidery machine. Background technique [0002] Computer coil embroidery machine, also known as computer coil rope (or belt) embroidery machine, which fixes thicker rope or belt edge on the fabric by needle embroidery, such as figure 1 As shown in the structural diagram, the rope or belt 01 is fixed on the fabric 03 with the upper thread 02 advancing in a Z-shaped cross-line manner, so that the appearance of the embroidered fabric product can reflect a prominent three-dimensional embroidery effect on the surface of the fabric. [0003] This kind of computer rope embroidery machine achieves the work of side disk and side needle embroidery mainly through the needle bar coil rope mechanism on the main machine head, such as figure 2 As shown in , the lifting of the needle bar 04 is realized by the control sys...

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Problems solved by technology

[0004] The above-mentioned structure of the needle bar coiling mechanism has no problems in the ordinary coiling embroidery work, but there are relatively large problems in the work of coiling some special materials, such as the coiling rope is a light-guiding fiber, and this light-guiding fiber The fiber filament has the function of transmitting light. Its material is different from that of rope, thread or belt. The tensile strength is relatively low, and the surface cannot be damaged, otherwise it will affect the transmission of light. During coil embroidery in the rod coiling mechanism, since the needle rod coiling mechanism does not have a presser foot part that can hold down the fabric and prevent the fabric from floating up with the needle, it is easy for the floating position of the fabric to shift slightly and the next needle to pierce the fabric downward. The light guide fiber is punctured by the needle, resulting in broken thread or surface damage, incomplete breakage, etc. of the light guide fiber, which will directly cause this piece of fabric to be a waste product after embroidery. Therefore, the existing needle Rod coiling mechanism is not suitable for coil embroidery of light guide fiber, there are many problems that need to be solved urgently

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