| 摘要 |
<p>A machine for the packaging of products, a pusher 30 pushing a product 28 at its back side to insert it between grippers 24, there being placed a sheet of paper 29 between the product and the grippers 24, being pushed by the product itself to wrap around three sides of same. A rotating head 23 transports the grippers to a position 26 near means 21 of unloading the product from the grippers for routing to an exit line 12 from the machine. The loading means 27 comprise a pair of parallel articulated quadrilaterals, each formed by a motor- operated crank 32, a connecting rod 36, and a rocker arm 34, the connecting rods having ends hinged to an element 44 which in turn supports in a rigid manner the pusher 30, extending in a plane perpendicular to the direction of insertion of the products between the grippers. Upon synchronised rotation of the cranks 32, the pusher 30 moves parallel to itself along a closed trajectory 45 having an essentially straight segment for pushing the product to and between the grippers in the loading position and a curved return segment. <IMAGE></p> |
