Injection mold for built-in shell of automobile knob

The utility model discloses an injection mold for a built-in shell of an automobile knob, which comprises a first mold base and a second mold base, the first mold base is provided with a forming station, the forming station comprises a first matching end ring mold core and four movable mold mechanisms, each movable mold mechanism comprises a splicing type block body, the splicing type block body is provided with a peripheral wall molded surface, and the splicing type block body is provided with a second matching end ring mold core. A buckle hollowed-out part type block with a buckle forming channel is arranged on the outer peripheral wall type face, a buckle end forming protruding block is arranged on the first matching end ring die core, a matching type core is arranged on the second die base, an extending type column is arranged on the matching type core, and a buckle groove position avoiding type groove and a buckle end forming groove position are arranged on the extending type column. According to the uti