Envasdoras device perfected machines powdery, granular or liquid products drag. (Machine-translation by Google Translate, not legally binding)

摘要

Improved towing device for automatic packing machines for pulverulent, granulated or liquid products, which moves longitudinally and externally heat-sealed laminar material to a tubular shaping element through which the product to be packaged is supplied, the laminar material of which is subjected to longitudinal welding of the overlapping edges to form a tube to which transverse welds are made to constitute the product's packaging bags, and which comprises a ring surrounding the laminar material formed tubularly on the forming element, which incorporates a flexible membrane constituting an annular chamber equipped with pressurized fluid inlet/outlet means for compressing said annular membrane on the laminar material formed tubularly on the forming element, whose ring is fitted and fixed between two jaws of section in c that constitute a clamp as a clamp while articulating at one end, to adapt to any diameter of ring and forming element, to a mounted support movable with reciprocating movement along the tubular shaping element, which in the active stroke of the support pressure is applied to the annular chamber compressing the membrane against the laminar material on the shaper producing the dragging of the material on the shaper, and in the inactive stroke the pressure is removed by separating the membrane from the material to effect the inactive return stroke to start the cycle again, characterized in that the ring has a cross section essentially as a dovetail for the continuous coupling of the annular chamber; whose annular chamber which is provided with the corresponding inlet/outlet of pressurized fluid is an elongated continuous part which in swollen cross-section for the active stroke essentially adopts a trapezoidal configuration which on the inner major side and the two adjacent minor sides fit and it adapts internally to the ring and at the ends thereof it closes and is fixed to respective staggered faces at the ends of the ring by means of respective plates of corresponding configuration in l; and the pressure fluid inlet/outlet valve is an independent element of the annular chamber. (Machine-translation by Google Translate, not legally binding)