Tobacco – Cigar or cigarette making – Wrappers holders and carriers
Patent
1994-07-18
1996-06-25
Bahr, Jennifer
Tobacco
Cigar or cigarette making
Wrappers holders and carriers
131 32, 131 58, 131 59, A24C 126
Patent
active
055290779
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for rolling wrappers onto cigar bodies, comprising, on one hand, a lower roll unit with a pair of rolls with parallel rolls lying in a horizontal plane and rotatable in the same direction for supporting contact with the lower half of a cigar body when a wrapper is rolled thereon, said rolls being mounted in a holder at either end of the rolls and, on the other hand, an upper roll unit with two parallel rolls rotatable in the same direction about their own axes, and which, when rolling on the wrapper, are disposed in a horizontal plane above and parallel to the rolls in the lower roll unit for counteracting contact against the upper half of the cigar body.
A device of this type is previously known and has been used for decades with high reliability for wrapping cigar bodies with wrappers producing cigars of high quality. In such a device, a cigar body is picked up from a feeding conveyor by means of a gripper which moves back and forth transporting the body and depositing it between the lower pair of rolls and thereafter returning to its pick-up station. The upper pair of rolls is thereafter moved from a retracted position to rolling contact with the top of the cigar body, whereafter a vacuum conveyor delivers a wrapper above the roll apparatus by a so-called wrapper-needle pressing one end of the wrapper against one end of the cigar body. After completed rolling of the wrapper above the cigar body, another conveyor picks up the finished wrapped cigar and places it on an exit conveyor.
One disadvantage of this device is that the productivity is relatively limited, since only about 30 bodies can be wrapped per minute.
One purpose of the present invention is to improve the productivity of a rolling apparatus of the type in question while retaining the otherwise good rolling properties of the previously known device. In order to solve this problem, it is suggested in accordance with the present invention that the lower roll unit comprises at least two additional rolls which are mounted in the same holder as the two other rolls in the lower roll unit and rotatable about their own axes in the same direction as these, that the holders be rotatable about their centre axis in 90.degree. steps to always present two of its rolls in an upper position beside each other, and that the upper and lower roll units be moveable towards and away from each other. By disposing the four rolls in this manner in the lower roll unit, the holder of which can be rotated in 90.degree. increments, a finished cigar will fall out of the rolling apparatus by its own weight at the same instant as a new subsequent cigar body is brought to the wrapping station by the two rolls, which, after the 90.degree. rotation of the holders, become the active lower rolls in the rolling apparatus. Thus the productivity of the rolling apparatus can be doubled, i.e. about 60 cigars per minute.
Further significant features of the invention are disclosed in the subsequent dependent claims.
The invention will now be described in more detail below with reference to the accompanying drawings, where
FIGS. 1A-1F show schematically a rolling device according to the invention in end view in different operating phases for rolling a wrapper onto a cigar body, and
FIG. 2 is a section side view of the lower roll unit in a rolling device.
As can be seen in FIGS. 1A-1F, the device for rolling a wrapper onto a cigar body comprises a lower roll unit 10 and an upper roll unit 12. The lower roll unit 10 comprises four identical rolls 14, 16, 18, 20, which are mounted in a common holder 22 and are rotatably mounted about their own centre axes.
FIG. 2 shows in more detail how the lower roll unit 10 is constructed. The holder 22 at the right hand end of the roll unit 10 in FIG. 2 consists of an end piece 24 with four evenly distributed holes about a common circle for housing needle bearings 26 for each roll end. The holder 22 at the left-hand end as shown in FIG. 2 comprises firstly, an inner end piece 28, which, as does the right hand e
REFERENCES:
patent: 4236536 (1980-12-01), Waegaert
Bahr Jennifer
PMB Holding B.V.
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