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    • 4. 发明公开
    • SCREW-CUTTING SHEAR
    • EP4454796A1
    • 2024-10-30
    • EP24173279.1
    • 2024-04-30
    • Zhejiang Prulde Electric Appliance Co., Ltd.
    • Yang, Chenghao
    • B23D29/00B23D17/04
    • B23D17/04B23D29/002
    • Disclosed is a screw-cutting shear, including a shear base and a shear lever which are hinged with each other; a rotary cam is arranged on the shear base, a track groove is formed on a sidewall of the cam, and a first drive piece fitted with an outer sidewall of the cam and a second drive piece fitted with the track groove are provided on the shear lever; the shear lever has a shearing position and an expanded position; the cam pushes the first drive piece to move along the outer sidewall of the cam, driving the shear lever to shift from the expanded position to the shearing position; the cam pulls the second drive piece to move along an inner wall of the track groove, driving the shear lever to shift from the shearing position to the expanded position. The disclosure overcomes the structural complexity arising from separately providing a track plate as in conventional technologies. Reciprocal shifting of the shear lever between the expanded position and the shearing position is facilitated, which can effectively prevent jamming and meanwhile reduce the impact on the cam when the shear lever shifts between the expanded position and the shearing position, as well as the noise created when the screw-cutting shear is operating.