| 摘要 |
Device for heat-sealing or cutting thin foil of synthetic material between two dies which are linked to each other and can be pressed together against a restoring force including: (a) a table-like support having a recess in the underside of the support parallel to the front edge of the support, (b) a spring disposed in the recess, (c) a base strip movable in and out of the recess, the strip movable into the recess upon the application of pressure to press the two dies together, and the strip movable out of the recess upon the release of the pressure by the spring as the restoring force, (d) the table-like support having a pivotable edge on the underside of the support parallel to and to the rear of the base strip to permit the support to pivot on the edge when the base strip is moved into the recess, (e) one die fixed to the top surface of the table-like support, (f) another die disposed above the fixed die movable to press against the fixed die, the movable die having the form of a U-shaped yoke with the legs of the yoke fixedly attached to the yoke and movable therewith, (g) transmission members including two-armed levers which are hinged at one end at the sides of the base strip and at the legs of the U-shaped yoke at the other end, and the levers at an intermediate point between the points of hinging are pivotally fixed to the support, whereby pressing down on the front of the support causes the base strip to move into the recess making the two-armed levers pivot around the intermediate point thereby effecting lowering of the yoke. |
