Feeding device for a packaging machine
A feeding device for a packaging machine used to feed individual goods to a packaging station of the machine includes at least one continuously rotating conveyor which comprises at least one driver element used to drive the individual goods, which are to be guided, along a conveyor path. The inventive feeder device is embodied in such a manner that, for each conveyor, only one individual driver element can be placed in a driving position of the individual goods which are to be guided at any one time. The device reduces the feeding path of a packaging machine and also increases the position precision of the individual goods.
1. In a feeding device of a packaging machine for feeding bulk products into a packaging station of this machine, in which the feeding device has at least one endlessly revolving conveyor with at least one driver element for driving the bulk products to be fed along a conveyor path, the improvement wherein the feeding device is embodied such that, per conveyor, only a single one of the at least one driver element can be put simultaneously in a position for driving a bulk product to be fed, wherein the feeding device comprises at least two conveyors extending approximately parallel to one another; and wherein the at least two conveyors can be operated at different conveying speeds.
2. The device as defined by claim 1 , further comprising means for putting each of the at least one driver element individually into the conveyor path and individually removing each driver element from the conveyor path.
3. The device as defined by claim 2 , wherein the means for putting each of the at least one driver element individually into the conveyor path and individually removing each driver element from the conveyor path comprises a slide track.
4. The device as defined by claim 1 , wherein the at least one driver element extends in or above the conveyor path.
5. The device as defined by claim 2 , wherein the at least one driver element extends in or above the conveyor path.
6. The device as defined by claim 1 , further comprising a sensor operable to detect the position of the bulk products to be individually fed, the sensor being disposed upstream, in the conveying direction, of the at least one revolving conveyor.
7. The device as defined by claim 2 , further comprising a sensor operable to detect the position of the bulk products to be individually fed, the sensor being disposed upstream, in the conveying direction, of the at least one revolving conveyor.
8. The device as defined by claim 1 , further comprising an accelerating conveyor disposed upstream, in the conveying direction, of the at least one conveyor.
9. The device as defined by claim 2 , further comprising an accelerating conveyor disposed upstream, in the conveying direction, of the at least one conveyor.
10. A method for feeding bulk products into a packaging station of a packaging machine, in which the bulk products are fed to the packaging station along a conveyor path and engaged individually and spaced apart from one another by driver elements provided on at least two conveyors extending approximately parallel to one another, characterized in that per conveyor, only a single driver element simultaneously transports a bulk product that is to be fed, the method comprising the step of operating the at least two conveyors at different conveying speeds.
11. The method as defined by claim 10 , wherein each driver element, before it transports a bulk product along the conveyor path, is brought to a predetermined conveying speed, and the conveying speed is selected as a function of the position of the bulk product to be transported by it.
12. The method as defined by claim 10 , wherein each driver element, upon the transfer of the bulk product transported by it to a transporting means of the packaging station, has the same speed as this transporting means.
13. The method as defined by claim 11 , wherein each driver element, upon the transfer of the bulk product transported by it to a transporting means of the packaging station, has the same speed as this transporting means.