| 摘要 |
<p>A sandwiching machine is disclosed providing equal filler flow rates to nozzles in a rotational stencil and regular flow regardless of the speed of displacement of an associated conveyor passing by upstream and downstream cookie supply stations and a filler depositing station therebetween,the filler flow rate being regulated as a function of the speed of displacement of the conveyor, The machine provides synchronization of the rotational speed of the rotational drives for the conveyor chains by means of a mechanical connection comprising clutches associated with a speed change device. The pressure of filler at the admission sides of volumetric pumps is maintained constant by means of a pressure regulator and accumulator, The feeding of the stencil cylinder is effected through two separate inlets. One inlet feeds filler into a hollow shaft fixed to the body of a valve member through a radialchannel for communication through ports in the stencil cylinder with orifices in the rotational stencil, The other inlet carries filler into the delivery box at one end of the stencil cylinder between the latter and the hollow shaft. The ports may be selec tively closed off by angular movement of the valve member.</p> |
