Plate punching device

Abstract

The invention discloses a plate punching device. The plate punching device comprises an upper die, an unloading plate, a center punch, side punches and a female die. The center punch is fixed to the center position of the bottom of the upper die. The multiple sets of side punches are fixed to the side portion of the bottom of the upper die. Center springs are arranged on the outer side of the center punch, and side springs are arranged on the outer sides of the side punches. The upper ends and the lower ends of the center springs and the side springs are connected with the upper die and the unloading plate. The female die is arranged at the bottom of the unloading plate and is fixed to a base. Center holes aligned with one another are formed in the center positions of the unloading plate, the female die and the base. The center holes and the center punch have the common center line. Side holes which are aligned with one another are formed in the side portions of the unloading plate, the female die and the base. The side holes and the side punches have the common center line. The upper die is fixed to the bottom of an upper die plate, and the upper portion of the upper die plate is connected with a piston rod of a hydraulic oil cylinder. The plate punching device has the beneficial effects of being simple in structure, high in efficiency and capable of achieving automatic unloading and is suitable for punching of various plates.

Description

technical field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a plate punching device. Background technique

[0002] In the fields of automobiles and construction machinery, thin plate parts are widely used. For example, automobile cover parts include surface and internal parts stamped from thin steel plates with a thickness of less than 3 mm covering the engine, chassis, cab and body of the car. , and its weight accounts for more than 50% of the total amount of steel used in automobiles. At present, round holes and waist-shaped holes with a diameter of less than 6mm in thin plate parts are mostly punched by punching dies, while traditional punching dies are formed by integral casting. It is slender and rod-shaped, and the stamping head at the bottom often breaks due to the huge impact force during use. Since the mold is an integral mold, once the stamping head is broken, the entire mold will be scrapped, and the ...

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