Method and device for supplying filter material to a filter rod forming machine
AssigneeMontrade S.R.L.
InventorsAntonella Giannini, Alberto Monzoni
Life of this patent
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Abstract
A method and a device for supplying filter material to a filter rod forming machine, according to which a flat band of filter material, obtained working a single “tow”, is longitudinally cut in at least two strips, each of which is fed to a respective pneumatic device adapted to transform the respective strip in a respective cord. The cords are then fed to an inlet of the forming machine at positions evenly distributed about a central axial portion for forming a peripheral axial portion.
Claims25
A method for supplying filter material to a filter rod forming machine, each filter rod comprising a peripheral axial portion and a central axial portion, the filter rod forming machine having an inlet having an axis, and the method comprising the steps of:
- providing an inlet unit having an output mouthpiece, the inlet unit being designed to work a single “tow” so as to transform the single “tow” into a flat band, and to feed the flat band to the output mouthpiece, and
- supplying the flat band to said inlet;
- longitudinally cutting the flat band in at least two strips at a position between the output mouthpiece and said inlet;
- transforming the at least two strips into at least two cords;
- providing a probe coaxial to said axis through said inlet to define said central axial portion;
- feeding the at least two cords transformed from the at least two strips to said inlet at positions evenly distributed about the axial probe to form said peripheral axial portion.
A device for supplying filter material to a filter rod forming machine, each filter rod comprising a peripheral axial portion and a central axial portion;
- the filter rod forming machine having an axis and an inlet coaxial to the axis;
- the device being designed to be interposed between the machine and an inlet unit having an output mouthpiece and designed to work a single “tow” so as to transform the single tow into a flat band and feed the flat band to the output mouthpiece;
- and the device comprising:
- a probe designed to be mounted through said inlet coaxially to said axis;
- cutting means for cutting the flat band into at least two strips;
- pneumatic advancement means for transforming the at least two strips into at least two cords and for supplying the at least two cords to said inlet at positions distributed about the probe;
- and
- guide means for feeding each strip to the pneumatic advancement means along a respective path.
Dependencies are inferred from the claim text.