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Packing machine and method and device for controlling cigarette tips

a packing machine and cigarette tip technology, applied in the direction of tobacco, material analysis, instruments, etc., can solve the problems of affecting the detection effect of cigarettes, and increasing the risk of cigarettes being damaged, so as to achieve the effect of convenient implementation and low cos

Inactive Publication Date: 2007-04-12
GD SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] It is an object of the present invention to provide a packing machine and a method and device for controlling the fill of cigarette tips, designed to eliminate the aforementioned drawbacks, and which, in particular, are cheap and easy to implement.

Problems solved by technology

This complicates the packing machine (devices must be provided to offset and re-position the cigarettes) and increases the risk of damaging the cigarettes.
Back scattering has the disadvantage that, in the event the cigarette tip is filled on the surface but with a void at the back, the light is still detected and the cigarette tip therefore considered properly filled.
Another important point to note is that both scattering and back scattering analysis also have the drawback of the detected data depending on the colour of the tobacco.
Which means a change in tobacco colour involves recalibrating the sensors, thus increasing running cost and downtime.

Method used

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  • Packing machine and method and device for controlling cigarette tips
  • Packing machine and method and device for controlling cigarette tips
  • Packing machine and method and device for controlling cigarette tips

Examples

Experimental program
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Embodiment Construction

[0018] Number 1 in FIG. 1 indicates as a whole a packing machine for producing packets of cigarettes. Packing machine 1 comprises a device 2 (FIG. 2) for controlling the fill of tips 3 of cigarettes 4. Device 2 is located downstream from a hopper 5 (shown schematically in FIG. 1) for cigarettes 4, and upstream from a reject unit (not shown), and in turn comprises a conveyor 6 for feeding groups 7 of cigarettes 4, crosswise to cigarettes 4, along a feed path P through a control station 8 equipped with a control unit 9.

[0019] Conveyor 6 comprises a belt 10; and a number of seats 11, each for housing a respective group 7 of cigarettes 4 comprising three superimposed rows 12 of cigarettes 4.

[0020] Control unit 9 comprises a number of—in particular, three—microwave sensors 13 arranged one on top of another, so that, as group 7 of cigarettes 4 travels through control station 8, each sensor 13 detects the density of the tips of cigarettes 4 in a respective row 12.

[0021] In the FIG. 3 em...

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Abstract

A method and device for controlling tips of cigarettes fed in groups along a feed path through a control station; the device has a number of sensors, each of which induces a stationary microwave field to determine correct fill of the tips of cigarettes travelling through the stationary microwave field.

Description

[0001] The present invention relates to a packing machine and to a method and device for controlling cigarette tips. BACKGROUND OF THE INVENTION [0002] On cigarette packing machines, the tips of cigarettes in a group are analyzed to ensure they are filled. [0003] More specifically, this is done by light scattering analysis of the cigarette tips. Devices employing this type of analysis comprise a source for emitting a light beam substantially parallel to the axis of a cigarette for analysis; and sensors positioned crosswise to the cigarette to detect scattered light. As described in U.S. Pat. No. 4,907,607, to perform this type of analysis correctly on groups of cigarettes, the individual cigarettes must be offset with respect to the groups, so that the sensors are positioned correctly about the cigarettes. This complicates the packing machine (devices must be provided to offset and re-position the cigarettes) and increases the risk of damaging the cigarettes. [0004] To check filling...

Claims

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Application Information

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IPC IPC(8): A24C5/34
CPCA24C5/3412B65B19/30G01N22/00
Inventor DE PIETRA, GAETANOCERATI, LUCA
Owner GD SPA