Light warp knitting machine groove needle bed

The utility model discloses a light warp knitting machine groove needle bed which comprises a groove needle bed body and a needle groove, the needle groove is formed in the top end of the groove needle bed body, a needle installing mechanism is installed on the right side of the groove needle bed body, and an expanding mechanism is installed at the top end of the needle groove. Through cooperative use of a first shell, a fixed block, a first grab handle, an anti-skid sleeve, a cross rod, a sleeve, a spring and a first sliding plate in the needle mounting mechanism, the purpose that a groove needle is inserted into a needle groove is achieved, and through cooperative use of a second shell, a second grab handle, a limiting block, a second sliding plate and a rotating block in the expansion mechanism, the groove needle is inserted into the needle groove. Through cooperative use of the mechanisms, the needle replacing efficiency is improved, the situation that the groove needle is difficult to install in the foll