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The utility model provides a finger cam mechanism, which is applied to a plastic mold for withdrawing and molding a plastic product with an inner side overhead hook. The inner side overhead hook of the product is provided with a functional reverse buckle, and a side hole is formed above the functional reverse buckle. The finger cam mechanism is characterized by comprising a first finger cam, a slide block and a second finger cam, wherein a finger cam head at the upper end of the first finger cam is used for withdrawing and molding the inner side overhead hook of the plastic product; the slide block is arranged on the outer side of the die cavity of the product of the plastic mold in a sliding way; the front end of the slide block is provided with a projecting structure for molding the side hole; the second finger cam is obliquely connected to a finger cam head of the first finger cam in a sliding way; the second finger cam is used for withdrawing and molding the functional reverse buckle on the inner side overhead hook; and during mold matching, the front end face of the second finger cam is contacted with the front end face of the projecting structure of the slide block. Due to the adoption of the finger cam mechanism, the defect that the functional reverse buckle on the inner side overhead hook of the product cannot be withdrawn with the finger cam mechanism in the prior art is overcome, the structure is simple, and processing is convenient.

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