Unit for transferring food products, such as chocolates, between production machines

Abstract: A unit (1) for transferring food products (2) such as chocolates, whereby a conveyor (5) feeds a compact sequence (17) of mutually contacting products (2) in a given direction (8) to a transfer device (13) by which the products (2) are fed one by one, still in direction (8), into respective peripheral seats (9) on a conveyor wheel (6) rotating about an axis (7) perpendicular to the aforementioned direction (8); the transfer device (13) being defined by two counter-rotating lobed wheels (14) located on either side of the conveyor (5) and defining a movable pocket (16) for conveying each product (2).

Description: The present invention relates to a unit for transferring food products, such as chocolates, between production machines. Though the following description relates to the food industry, and more specifically to the transfer of chocolates or sweets between a manufacturing machine and a wrapping line, the same obviously also applies to the transfer between production machines of fragile, relatively small size products of any sort. GB-A-2239227 teaches how to connect a chocolate manufacturing machine to the wrapping line via a transfer unit by which the chocolates coming off the machine are fed successively on a conveyor and in a first direction towards a stop member against which the chocolates are accumulated and engaged successively by a reciprocating pusher by which they are fed in a second direction, perpendicular to the first, into respective seats on a conveyor or wrapping wheel mounted for rotation about an axis extending transversely of the first direction, and perpendicular to the second direction. Known transfer units of the aforementioned type present several drawbacks, foremost of which are the high noise level resulting from the presence of a reciprocating member as represented by the pusher, and the relatively low operating speed of the unit due to stoppage and the change in direction of the chocolates prior to being fed on to the conveyor wheel. It is an object of the present invention to provide a transfer unit designed to overcome the aforementioned drawbacks. According to the present invention, there is provided a unit for transferring food products, e.g. chocolates, comprising a conveyor for feeding a compact sequence of mutually contacting products in a given direction; a conveyor wheel adjacent to an output end of the conveyor and having a number of peripheral seats, each adapted to accommodate a respective product; and a transfer device for successively feeding the products from the conveyor to respective said seats on the conveyor wheel; the conveyor wheel being mounted for rotation about an axis perpendicular to said direction, and with its outer edge facing said output end; characterised in that the transfer device comprises two counter-rotating lobed wheels located on either side of the conveyor and defining a pocket movable in said given direction for further conveying each said product in said given direction away fron said output end and into the respective said seat of the conveyor wheel . A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which: Fig.1 shows a partially sectioned side view, with parts removed for simplicity, of a preferred embodiment of the transfer unit according to the present invention; Fig.2 shows a partial plan view, with parts removed for simplicity, of the Fig.1 unit. Number 1 in the accompanying drawings indicates a unit for transferring chocolates 2 from a manufacturing machine 3 to a production machine consisting in the example shown of a wrapping line 4. Unit 1 comprises a horizontal conveyor belt 5 having a first end connected to the output of machine 3, and a second end 5a facing the outer edge of a conveyor or wrapping wheel 6 rotated intermittently by a known drive device (not shown) about an axis 7 substantially coplanar with conveyor 5 and perpendicular to the traveling direction 8 of conveyor 5 towards wheel 6. Wheel 6 presents a number of peripheral seats 9 traveling in steps, inside a curved housing 10, between a loading station 11, wherein each seat 9 receives a respective chocolate 2 off conveyor 5, and an unloading station 12, wherein chocolates 2 are withdrawn successively from respective seats 9 by known extracting means (not shown) and fed on to line 4 by known feeding means (not shown). Chocolates 2 are transferred successively between second end 5a of conveyor 5 and respective seats 9 on wheel 6 by a transfer device 13 comprising, as shown more clearly in Fig.2, two lobed wheels 14 substantially coplanar with axis 7 and located on either side of second end 5a of conveyor 5 at loading station 11. By means of a known drive device (not shown), wheels 14 are rotated at the same speed and in opposite directions about respective shafts 15 extending transversely of axis 7 and direction 8, so as to define a movable pocket or seat 16 for receiving a chocolate 2 off conveyor 5 and feeding it, still in direction 8, into a respective seat 9 arrested in loading station 11. For ensuring conveyor 5 presents at all times a compact column 17 of chocolates 2 contacting wheel 14, and more specifically contacting chocolate 2 in seat 16 (Fig.2) and the movable locating surface 18 defined by the two rear lobes 19 of seat 16, an end portion of conveyor 5 close to second end 5a extends along a chamber 20 through which air is blown in direction 8 by a device 21 and at a greater speed than that of conveyor 5, so that chocolates 2 accumulate contacting one another against transfer device 13. In lieu of blowing device 21, said compact column 17 contacting movable locating surface 18 may obviously be formed, for example, by increasing the speed of conveyor 5, or, according to a variation not shown, by providing, at second end 5a of conveyor 5, an intermittent gripping device for arresting the chocolate 2 immediately upstream from transfer device 13 in direction 8. On reaching second or output end 5a of conveyor 5, chocolates 2 are thus fed by transfer device 13 substantially continuously, and still in direction 8, into respective seats 9, i.e. with no stoppage or sharp changes in direction which could result in damage to the chocolates over and above a given operating speed.

Claims: A unit (1) for transferring food products (2), e.g. chocolates, comprising a conveyor (5) for feeding a compact sequence (17) of mutually contacting products (2) in a given direction (8); a conveyor wheel (6) adjacent to an output end (5a) of the conveyor (5) and having a number of peripheral seats (9), each adapted to accommodate a respective product (2); and a transfer device (13) for successively feeding the products (2) from the conveyor (5) to respective said seats (9) on the conveyor wheel (6); the conveyor wheel (6) being mounted for rotation about an axis (7) perpendicular to said direction (8), and with its outer edge facing said output end (5a); characterised in that the transfer device (13) comprises two counter-rotating lobed wheels (14) located on either side of the conveyor (5) and defining a pocket (16) movable in said given direction (8) for further conveying each said product (2) in said given direction (8) away fron said output end (5a) and into the respective said seat (9) of the conveyor wheel (6). A unit as claimed in Claim 1, wherein the two lobed wheels (14) are mounted for rotation about respective further axes (15) extending transversely of said axis (7) and said direction (8).

Inventors: SPATAFORA MARIO, STRAZZARI GIULIO, SPATAFORA, MARIO, STRAZZARI, GIULIO
Applicants: AZIONARIA COSTRUZIONI ACMA SPA, AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.P.A.
Application year: 1992
Main classification: B65G47
IPC codes: B65G47