A needle bar drive mechanism for a button sewing machine

CN224451078UActive Publication Date: 2026-07-03TAIZHOU JEMA SEWING MASCH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: TAIZHOU JEMA SEWING MASCH CO LTD
Filing Date: 2025-07-23
Publication Date: 2026-07-03

AI Technical Summary

Technical Problem

The existing button-attaching machine has a short needle bar drive mechanism with a large height requirement, making it difficult to install, fix, disassemble, and replace the needle bar body, which is inconvenient to use.

Method used

A needle bar drive mechanism was designed, comprising components such as a drive shaft, cam, fixed block, linkage structure, needle sleeve, and limiting groove. The cam drives the fixed block and linkage plate to rotate eccentrically, thereby realizing the reciprocating motion of the needle bar. The limiting groove and movable rod work together to simplify the installation and disassembly process of the needle bar.

Benefits of technology

The increased needle bar stroke and reduced top housing height of the button attaching machine facilitate the installation, fixing, disassembly, and replacement of the needle bar body, improving ease of use.

✦ Generated by Eureka AI based on patent content.

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Figure CN224451078U_ABST

Patent Text Reader

Abstract

The utility model discloses a needle bar drive mechanism of button sewing machine, including button sewing machine body, the drive shaft of button sewing machine body inside setting and the ejection rod and needle cover of button sewing machine body outer upper end inside clamping through, still include: the cam of screw fixed outside nested installation of drive shaft, and the inboard fixed connection of cam has fixed block, the outside setting of fixed block has the linkage structure with spacing effect, the needle bar body of needle cover's lower end inboard nested adhesion has, and the inboard setting of needle cover and needle bar body has the connection limit structure, the linkage structure includes the outer connecting plate, connecting plate, bearing block, guide slide rail, linkage board and mounting seat, and the outer connecting plate rotation is connected in fixed block outside. The needle bar drive mechanism of button sewing machine, convenient for making this drive mechanism can increase stroke, reduce button sewing machine body top casing height, convenient for installing fixed and disassembling replacement to needle bar body, make it convenient to use.

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