| 摘要 |
The present invention discloses a multi-needle-bar module for sewing machines. Such a multi-needle-bar module may be additionally mounted on the existing sewing machines, so that the existing sewing machines may be easily retrofitted into multi-needle-bar sewing machines. The multi-needle-bar module is not limited to a two-needle-bar structure, and may be assembled with three, four or more needle bars (4) according to actual requirements, solving the problem that both the single-needle-bar sewing machines and the two-needle-bar sewing machines require manual change of threads in the process of sewing a pattern due to insufficient color varieties of the upper threads. The multi-needle-bar module guides each needle bar (4) via the first horizontal guideway and the second horizontal guideway, and feeds a specific needle bar into the neck of the needle bar driving block via the driving mechanism. Such a multi-needle-bar module has the advantages of simple structure and automatic control. |
