Patent GB-1118481-A (GB)
Title: Improvements in apparatus for the production of hollow confectionery, for example moulded chocolate bodies
IPC: A23G1/22
Filed: 1965-09-29
Abstract: 1,118,481. Moulding hollow confectionery. WALTER HORNLEIN METALLWAREN FABRIK. 29 Sept., 1965 [6 Oct., 1964; 20 Aug., 1965 (2)], No. 41468/65. Heading B5A. Hollow chocolate bodies are rotationally cast in moulds within a mould frame 4 carried by trolleys 3, which traverse an endless horizontal conveying path (1) (Fig. 1, not shown), which frames 4 are mounted between the prongs 23 of a trolley fork 22 for simultaneous rotation about a longitudinal axis 24 parallel to the prongs 23 and about an axis 27 transverse thereto. The trolleys 3 traverse a cooling channel (2) along the greater proportion of the conveying path 1 and are halted at a series of working stations (A . . . F) where the mould frames 4, which are halted in a horizontal position, are successively unlocked and opened, the moulded bodies are extracted by a device and deposited on a conveyer belt (not shown), new wrapping foils are inserted into the mould halves, liquid chocolate is injected into the lower mould halves, and the mould frame is closed. The trolleys are driven around endless rails 5, 6 of the conveying path (1) by the engagement of a pivoted member (42) (Fig. 6, not shown) with a constantly driven conveying chain 10 and disengagement thereof of all trolleys 3, whilst the working stations are operative, is effected by cams 47 which are adjustably carried on rods 48 and are rotated thereupon into operative engagement with members 42. The trolleys may alternatively be in constant engagement with the conveying chain 10 which is halted for the working station operations. The mould frames 4 are rotated about the transverse axes 24, 27 from an endless drive chain 9 which is in constant engagement with a chain wheel 41 on trolley 3 whereby the fork 22 is rotated about stationary axis 24 from a belt drive 37 over a deflecting pulley 38 to pulley 36 which engages with fork 22, via a friction clutch 34, and the frame 4 is rotated about axis 27 by a deflected belt drive 33 from pulley 32 fixed to axis 24; the mould frame 4 being halted in a horizontal position throughout the working stations (A-F) by the action of pins 49, 54 which are sequentially displaced by cam tracks 50, 55, respectively into the path of a stop 51 on frame 4 and an arm 52 on fork 22; the mould frame 4 may alternatively be halted by magnetic means. The chains 9, 10 may be separately driven or driven from a two speed motor (18) (Fig. 2, not shown) which, with a speed differential of 2 : 1 between chains 9,10, operates at half speed when trolleys 3 are stationary at the working stations and only the drive is being transmitted from chain 9 so that pulleys 36 are rotated at a constant speed throughout the cycle. The machine frame (21) (Fig. 8, not shown) carries shafts (57) provided with adjustable eccentric weights (58) for vibrating the moulds which vibrations are accentuated by varying the rotation speed of the motor driving the shafts; the frame 21 is also readily extensible to lengthen the conveying path. The mould frames 4 (Figs. 13 and 14, not shown) are hinged to open along one side thereof and, during rotation, are looked along the other side thereof under tension by a pair of hooked catches (162) (Fig. 11, not shown) pivoted to a spring bar (159) on the lower mould frame half 102 and engaging on a similar spring bar (159) on the upper mould frame half. The mould frame (4) is unlocked and opened at the first working station (A) where it is engaged by a cylinder actuated pivotal member (171) (Figs. 11 and 12, not shown) which bears against the upper mould half and restrains the springs (159) which are released when the catches (162) are pivoted out of engagement therewith by a pair of arms (182) which are pivoted outwardly by engagement of a cylinder (187) driven rack (184). A pair of arms (116) is then pivoted by a cylinder (124) into a vertical position under the frame (4) (Figs. 9 and 10, not shown) whereby studs (110) on either end of the upper mould frame half are engaged by an open ended U-section shaped track in grippers (115) pivoted at the ends of the arms (116) and which, with the arms (116) vertical and after the pivotal member (171) has been removed, are then rotated by a cylinder (129) driven chain (137) so that the upper mould half (101) is rotated to the open position; the arms (116) then pivot back out of the vertical position disengaging at the other end of the track thereof from the dogs (110). The frame 4 is subsequently closed by a reversal of the mould opening procedure after the working station operations are completed and the catches (162) are then re-engaged by a further pair of arms (182a) which are pivoted about more widely separated centres than the catch releasing arms (182).