Abrégé

Disclosed is a pressurized toggle-joint punch, comprising a rack (1), a slider assembly (2), and an ejection assembly (3), wherein the slider assembly (2) and the ejection assembly (3) are oppositely arranged on the rack (1), a through hole (11) is provided on the rack (1) for the ejection assembly (3) to extend out, the ejection assembly (3) comprises an ejection rod device (5) and a connecting rod device (4), the ejection rod device (5) is arranged at the upper end of the connecting rod device (4), and the ejection rod device (5) is lifted and lowered along with the connecting rod device (4). The pressurized toggle-joint punch uses an oil cylinder to drive a toggle joint, the driving force can be increased 5 to 7 times by increasing the driving force of the oil cylinder, thereby saving on costs and improving production efficiency. A unique lower ejection structure is also used, according to the characteristics of the ejection force needed in the early period during ejection being large and the ejection force needed after a product is loosened being small, a cam on a single side is used for ejection in the early period during ejection, the ejection force is increased by using the lever principle, and cams on two sides are used in the later period for ejection at the same time, thereby increasing the ejection stroke.

Classes IPC  ?

• B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
• B21D 45/04 - Dispositifs d'éjection liés au déplacement de l'outil
• B30B 1/16 - Presses, utilisant un élément pilonnant, caractérisées par le mode d'entraînement du pilon, la pression étant transmise au pilon ou à la platine de presse directement ou uniquement par l'intermédiaire d'organes travaillant en simple poussée ou traction par un mécanisme à bascule actionné par des moyens à pression de fluide