Punching machine. (Machine-translation by Google Translate, not legally binding)

Punching machine, of the type used to simultaneously make a plurality of holes in sheets of paper for subsequent binding by a spiral or the like and comprising: a housing provided with an upper slot for the introduction of the sheets to be drilled, a cutting head provided with a plurality of parallel punches, a slide for the simultaneous operation of the punches in a direction of advance and return, and a motor element acting by means of a toothed shaft on a sector dentate defined in the slide ; characterized because it comprises: - a punching plate which acts as connecting element for the punches with the slide and which has: on its front surface a transverse recess, of trapezoidal section, for receiving the heads of the punches and, on its rear surface, a guide cross section for sliding assembly in a complementary guide defined at the front end of the slide. - removable bolts for the assembly of the punch holder plate with respect to the cutting head, without the possibility of lateral movement and with the possibility of advancement and retraction, - a housing provided with an inner housing for positioning the cutting head, said housing having a lateral opening for the lateral assembly and disassembly of the cutting head and a removable closing lid, - front thrust means for immobilizing the cutting head in the inner housing of the housing, - stop means for lateral locking of the cutting head in the inner housing of the housing - a mechanical brake operable by the slide in its recoil movement and acting directly on the motor shaft. (Machine-translation by Google Translate, not legally binding) 1. Punzonadora, del tipo de las empleadas para realizar simultáneamente una pluralidad de orificios en hojas de papel para realizar su posterior encuadernado mediante una espiral o similar y que comprenden: una carcasa provista de una ranura superior para la introducción de las hojas a taladrar, un cabezal de corte provisto de una pluralidad de punzones paralelos, una corredera para el accionamiento simultáneo de los punzones en una dirección de avance y de retroceso, y un elemento motor que actúa por medio de un eje dentado sobre un sector dentado definido en la corredera; caracterizada porque comprende: - una placa portapunzones que actúa de elemento de unión de los punzones con la corredera y que presenta: en su superficie anterior un rebaje transversal, de sección trapezoidal, para el alojamiento de las cabezas de los punzones y, en su superficie posterior, una