JP2009523015A5 - - Google Patents

Claims (19)

A plurality of supply sections (4) for each successive stripe (13) of filter material, a plurality of format forming sections (2) for forming each successive filter rod (3), and said supply section In a device (1) for producing a tobacco filter comprising a stabilization unit (18) arranged between (4) and the format forming section (2), the stabilization unit (18) comprises a plurality of stabilization units. A stabilizing section (24), the stabilizing section each including an inlet funnel (25) in which the stripes are introduced from the supply section (4) and a subsequent outlet funnel (26), the outlet A device characterized in that a filter material strand is fed through the funnel to the format-forming section (2). The apparatus of claim 1, wherein the stabilization sections (24) of the stabilization unit (18) are arranged side by side and converge to narrow the spacing between the filter material strands. Each of the inlet funnels (25) has a central axis of symmetry (27) that extends linearly and parallel to the transport direction or stripes (13) coming from the transport section (4) The apparatus according to claim 1, wherein the apparatus is located on a transfer plane. Between each of the inlet funnels (25) and the outlet funnel (26), a direction changing portion (29) is disposed. 4. An apparatus according to any one of the preceding claims, comprising a curved area for turning the direction of conveyance of the material strands. An apparatus according to claim 4, wherein each said turning portion (29) is directly coupled to the outlet of said inlet funnel (25). Each outlet funnel (26) has a central axis of symmetry (28), which is linear and slightly inclined with respect to the conveying direction of the filter strand material coming from the inlet funnel (25); And the apparatus of any one of Claims 1-5 extended in a slight inclination with respect to the conveyance direction of the filter material strand along the said format formation area (2). Device according to any one of the preceding claims, wherein air is blown into each funnel (25, 26) through a blow opening (33) communicating with the funnel (25, 26). Each funnel (25, 26) includes a first tubular body (30) and a second tubular body (31) placed behind the first tubular body (30) when viewed in the conveying direction. The first tubular body (30) is screwed into the second tubular body (31), whereby the outer surface of the first tubular body (30) and the second tubular body (31) 8. A device according to claim 7, wherein a tubular air flow passage (32) is defined between the inner surface and communicating with the blowing opening (33). The apparatus of claim 8, wherein the first tubular body (30) includes a narrowed and tapered leading section and a cylindrical intermediate section, the second tubular body (31) being slightly expanded. The inlet opening (33) of each inlet funnel (25) is inclined with respect to the central axis of symmetry (27), so that not only the axial component but also the radial component is added to the air flow. The apparatus according to claim 8 or 9. 9. The inlet opening (33) of each inlet funnel (25) is inclined with respect to the central axis of symmetry (27), whereby only the axial component is drawn into the air flow. Or the apparatus of 9. 9. The inlet opening (33) of each outlet funnel (26) is inclined with respect to the central axis of symmetry (28), whereby only the axial component is drawn into the air flow. The apparatus of any one of -11. Between each said inlet funnel (25) and said outlet funnel (26), a filter material strand is transported through a free space (35), in which the filter material strand travels freely without a guide portion. The device according to any one of claims 1 to 12. 14. The device according to claim 13, wherein the stabilization unit (18) comprises a case or box (23) for retaining the stabilization section (24) therein. 15. The box (23) has a containment passage inclined downwards for collecting and discharging chemicals liberated from the filter material strands and leading to a containment tank at the lowest point. Equipment. 16. Apparatus according to claim 14 or 15, wherein the box (23) has an opening (36) for exhausting compressed air which is substantially sealed and shielded against direct spraying. . Each said outlet funnel (26) comprises a perforated tubular body (37), said tubular body having a plurality of through holes (38) and immediately following said outlet funnel (26) as viewed in the conveying direction. The device according to claim 1, wherein the device is placed. The perforated tubular body (37) in order to prevent the through-hole (38) of each perforated tubular body (37) from facing an air flow towards the format-forming section (2). The apparatus according to claim 17, wherein the apparatus is formed only on the upper surface. The stabilization section (24) of each of the stabilization units (18) includes at least one intermediate funnel disposed between the inlet funnel (25) and the outlet funnel (26). The apparatus of any one of -18.