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A machine for dosing a product in capsules, includes a rotating turret which has seats suitable for receiving empty capsules and a dosing device for dosing the product in the capsules. The machine further includes a feeding unit having a first weighing device for weighing empty capsules, a transfer

A machine for dosing a product in capsules, includes a rotating turret which has seats suitable for receiving empty capsules and a dosing device for dosing the product in the capsules. The machine further includes a feeding unit having a first weighing device for weighing empty capsules, a transfer arrangement for transferring empty capsules, when weighed, to predetermined seats of the turret for being filled with the product, a second weighing device for weighing capsules filled with the product, and a processing device connected to the first and second weighing device for receiving data relative to weights measured by the first and second weighing devices and for calculating for each capsule a difference between the weight measured before and the weight measured after filling. In this manner, a respective quantity of dosed product is calculated.

대표청구항 ▼

1. A machine for dosing a product in capsules, or similar elements, comprising a first store, a second store, a rotating turret arrangement which has seats suitable for receiving empty capsules from said first store and a dosing device for dosing the product in the capsules, the machine further comp

1. A machine for dosing a product in capsules, or similar elements, comprising a first store, a second store, a rotating turret arrangement which has seats suitable for receiving empty capsules from said first store and a dosing device for dosing the product in the capsules, the machine further comprising: a feeding unit having a first weighing device, for weighing further empty capsules from said second store;a transfer arrangement for transferring the further empty capsules, when weighed, to predetermined seats of the turret arrangement for being filled with the product;a second weighing device for weighing the further capsules filled with the product and taken out from the turret arrangement; anda processing device connected to the first weighing device and to the second weighing device for receiving data relative to weights measured by means of the first and second weighing devices and for calculating for each further capsule a difference between a weight measured before and a weight measured after filling, in such manner as to calculate a respective quantity of dosed product. 2. A machine according to claim 1, wherein said turret arrangement comprises a single turret rotating about a rotation axis. 3. A machine according to claim 2, wherein the single turret comprises a plurality of working stations, each station having a respective dosing device and configured for opening, dosing the product, and closing respective capsules and further capsules during rotation of the single turret. 4. A machine according to claim 2, comprising a feeding station, provided with said first store, and at least one filling station provided with said dosing device for dosing the product, the feeding station and the at least one filling station being positioned adjacent and peripherally to the single turret. 5. A machine according to claim 1, wherein said feeding unit comprises a handling device for singly handling said further capsules from said second store to the second weighing device and from the latter to the transfer arrangement. 6. A machine according to claim 5, wherein the feeding unit comprises a first selection member for selectively conveying a further capsule which is dosed and/or within an acceptable weight tolerance to the transfer arrangement, or a further capsule which is damaged and/or outside an acceptable weight tolerance to a first rejection store. 7. A machine according to claim 1, wherein the transfer arrangement comprises a wheel rotating about a further rotation axis and containing an arm having a housing at a free end suitable for receiving a further capsule from the feeding unit and for releasing it to a defined seat of the turret arrangement. 8. A machine according to claim 7, wherein said arm is mounted axially movable on the wheel and suitable to be operated towards or away from the further rotation axis depending on an angular position of the wheel, in such a way that said housing moves along a trajectory, a portion of which substantially overlaps a respective rotation trajectory of the seats. 9. A machine according to claim 1, comprising a separation element positioned adjacent to the turret arrangement for receiving the capsules and the further capsules, filled and removed from the turret arrangement, and respectively conveying said capsules to a collection store and said further capsules to the second weighing device. 10. A machine according to claim 1, comprising a second selection member positioned downstream of the second weighing device for selectively conveying further capsules which are dosed and/or within an acceptable weight tolerance towards a movement arrangement to a collection store and further capsules which are damaged and/or outside an acceptable weight tolerance to a second rejection store. 11. A machine according to claim 1, comprising a feeding duct arrangement connected to the first store for singly drawing and conveying the capsules to the seats of the turret arrangement. 12. A machine according to claim 11, comprising a stop arrangement associated with the feeding duct arrangement, and suitable for blocking a displacement of the capsules along the feeding duct arrangement in such a manner as to prevent the capsules from being inserted in predetermined seats of the turret arrangement, and thereby keeping the predetermined seats empty. 13. A machine according to claim 12, wherein the feeding duct arrangement includes a plurality of feeding ducts, said stop arrangement comprising a plurality of movable abutting elements, each of which is associated with a respective feeding duct and suitable to be independently operated between two operating positions, in such a manner as to block or allow the capsules to pass along the respective feeding duct. 14. A method for weighing a product dosed in capsules or similar elements by means of a filling machine comprising a first store, a second store, a rotating turret arrangement which has seats suitable for receiving capsules drawn empty from said first store and a dosing device for dosing the product in the capsules, comprising the steps of: keeping predetermined seats of the turret arrangement empty;inserting respective further capsules drawn empty from said second store and weighed by means of the first weighing device in said empty predetermined seats;opening, dosing the product and closing said capsules and said further capsules;weighing by means of a second weighing device the further capsules once taken out from the turret arrangement; andcalculating for each further capsule a difference between a weight measured before and a weight measured after filling, in such a way as to determine a respective quantity of dosed product. 15. A method according to claim 14, wherein said keeping said predetermined seats empty step comprises preventing the capsules from being fed to the predetermined seats. 16. A method according to claim 14, and further comprising keeping the predetermined seats empty according to a fixed or random sequence. 17. A method according to claim 14, further comprising rotating the turret arrangement with a continuous motion. 18. A method according to claim 14, wherein said inserting comprises displacing said further capsules along a motion trajectory having a portion substantially overlapping a respective rotation trajectory of said seats.