摘要:
Cigarettes are perforated by being rolled along a row of pins which are excited, for example by being vibrated. Vibration may be towards and away from the cigarettes so that the pins penetrate as a result of the vibration; the depth of penetration may be varied to control the size of the perforations. Alternatively the vibration may be in a direction transverse to the axes of the pins. In either case the pins may be mounted on a flexible member having a resonant frequency equal to the frequency of vibration. The vibratorary drive may be an electro magnetic device or a piexoelectric crystal. An alternative form of excitation of the pins involves passing compressed air through the pins and into the cigarettes, the pins being tubular for that purpose.
摘要:
Plasticizer or other fluid additive is applied to a moving filter tow in an applicator chamber by means of a rotary brush. Uncaptured plasticizer is collected in a container and returned to the chamber for reapplication. The rate of initial application is controlled by a pump and that of reapplication by a restrictor valve; the rates are independently variable. The supplied and collected plasticizer may be applied to different parts of the tow, e.g. to different sides.
摘要:
In apparatus for conditioning filter tow for subsequent production of cigarette filter rod a stream of filter tow is conveyed from a source by a first drive unit which delivers the tow into a conditioning station. A second drive unit delivers the conditioned tow to a rod-forming unit. A variable speed transmission is provided to allow independent control of the first and second drive units. The transmission may be replaced by an electronic speed control arrangement.
摘要:
In the manufacture of filter rods for the tobacco industry, plasticizer and one or more flavorants or other additives are mixed in controlled proportions in a mixing chamber (100) in a tow opening machine. This allows different flavorant mixes to be made at the machine and avoids problems with mixes that separate or have short shelf lives.
摘要:
The application of fluid additive to a moving filter tow for production of filter rod for cigarettes, is controlled by a system which provides monitoring of rate of application of the additive by weight. Fluid additive, such as plasticizer, is pumped from a measuring cylinder to an applicator booth, excess additive draining back to the cylinder. Pressure in the cylinder is monitored by a transducer and a control circuit is provided to compare the rate of loss of additive from the cylinder (as measured by change in pressure) with a required value and adjust the supply pump by way of a motor and gearbox accordingly. Fluid additive is periodically supplied to the cylinder from a flask and reservoir.
摘要:
Apparatus for determining the height of a column of tobacco or similar particulate material in a downwardly extending channel, comprising a first capacitor, a second capacitor formed partly by an electrode plate extending above and below the desired average level of the top surface of the tobacco column in the channel during use, a third capacitor formed partly by an electrode plate lying permanently below the top surface of the tobacco column, and an electrical circuit which compares the value of the second capacitor with the sum of the values of the first and third capacitors and from which output signal can be obtained which reflects that comparison.