Weight and count detection mechanism for packaging machine

The utility model provides a weight and count detection mechanism for a packaging machine. The mechanism comprises a rack, wherein a first conveyor belt, a weighing mechanism and a second conveyor belt are arranged above the rack, and are sequentially connected; an arrangement mechanism is arranged above the second conveyor belt; a mechanical counting device is arranged at the tail end of the second conveyor belt; a count sensor is arranged above the second conveyor belt; a semi-funnel-shaped feed hopper is arranged on the upper part of the mechanical counting device; a rotating baffle plate is arranged on the lower part of the mechanical counting device; a second weight sensor is arranged above the rotating baffle plate. According to the mechanism, individual strip-type materials are weighed, weight signals are transmitted to a PLC (programmable logic controller), and welding rods with unqualified weights are moved away by a mechanical hand, so that the weights are detected; the count sensor is combined with the mechanical counting device, so that the number of the materials in a packaging box can be better controlled; the mechanism has the advantages of simple structure, detection accuracy, good packaging effects and high automation degree.