Claims:1. A stack delivery system (100) for transferring stacks of hinged lid pack (HLP) blanks based on count of HLP blanks in each of the stacks, the stack delivery system (100) comprising:
a conveyor belt (102) for receiving HLP blanks in a plurality of rows for purpose of stacking, wherein the HLP blanks are received at a constant rate and in regular cycles, and wherein each cycle of HLP blanks leads to formation of one stack of HLP blanks for each row of the plurality of rows;
at least one count sensor (112) placed near the conveyor belt (102), wherein the at least one count sensor (112) is to:
determine a count of HLP blanks in each row, from the plurality of rows, for each cycle of HLP; and
generate a stack rejection signal for a stack of HLP blanks formed during a cycle for which the determined count of HLP blanks in the each row is less than a pre-defined number; and
a stack rejection controller (114), coupled to the at least one count sensor (112), programmed to receive the stack rejection signal for the stack and activate a stack removal unit (116) to remove the stack from the stack delivery system (100).
2. The stack delivery system (100) as claimed in claim 1, wherein the pre-defined count is about 600.
3. The stack delivery system (100) as claimed in claim 1, wherein the at least one count sensor (112) is a photo-electric sensor.
4. The stack delivery system (100) as claimed in claim 1, wherein the stack rejection controller (114) is a programmable logic controller (PLC).
5. The stack delivery system (100) as claimed in claim 1, further comprising at least one stack conveyor belt (106) for transferring stacks of HLP blanks formed during the regular cycles.
6. The stack delivery system (100) as claimed in claim 5, wherein the stack removal unit (116) comprises at least one ejection conveyor belt (118) associated with the at least one stack conveyor belt (106) for removing the stack from the stack delivery system (100).
7. The stack delivery system (100) as claimed in claim 6, wherein the stack rejection controller (114) is configured to lift and move the at least one ejection conveyor belt (118) to remove the stack from the at least one stack conveyor belt (106).
8. A method for transferring stacks of hinged lid pack (HLP) blanks based on count of HLP blanks in each of the stacks using a stack delivery system (100), the method comprising:
receiving, by a conveyor belt (102), HLP blanks in a plurality of rows for purpose of stacking at a constant rate and in regular cycles, and wherein each of the regular cycle of HLP blanks results in formation of a stack of HLP blanks;
determining, by at least one count sensor (112), a count of HLP blanks in each row, from the plurality of rows, for each cycle of HLP blanks;
generating, by the at least one count sensor (112), a stack rejection signal for a stack of HLP blanks formed during a cycle for which the determined count of HLP blanks in the each row is less than a pre-defined count;
receiving, by a stack rejection controller (114), a stack rejection signal for the stack; and
activating, by the stack rejection controller (114), a stack removal unit (116) to remove the stack from the stack delivery system (100).
9. The method as claimed in claim 8, wherein the stack removal unit (116) comprises at least one ejection conveyor belt (118) associated with at least one stack conveyor belt (106) for removing the stack from the at least one stack conveyor belt (106), and wherein the activating the stack removal unit (116) comprises:
lifting and moving the at least one ejection conveyor belt (118) to remove the stack from the at least one stack conveyor belt (106).
, Description:N/A