Carton unfolding device of automatic packaging machine

Abstract

The invention relates to a carton unfolding device of an automatic packaging machine. The carton unfolding device is arranged between a carton warehouse and a carton conveying chain and comprises a carton sucking mechanism and a carton unfolding mechanism, the carton unfolding mechanism comprises a carton pre-unfolding assembly, a carton unfolding assembly and a carton over-unfolding assembly, the carton sucking mechanism comprises a transmission assembly, a vacuum control assembly and three sucking claw assemblies, sucking claws of the sucking claw assemblies perform inner cycloid motion, interference between the sucking claws and other parts is avoided, the sucking claws are controlled in a mechanical mode to grab and place carbons, four carton unfolding motions are carried out on the cartons, the unfolding efficiency is high, the cartons are completely unfolded, and the success rate of follow-up working procedures is improved.

Description

technical field [0001] The invention relates to a packaging machine, in particular to a carton opening device for an automatic packaging machine. Background technique [0002] The existing automatic packaging machine is equipped with an automatic box-taking mechanism, and the automatic box-taking mechanism opens the folded cartons in turn and sends them to the packaging conveyor belt for subsequent drug charging procedures. The box picking mechanism of the packaging machine usually uses a suction cup to absorb the folding carton from the carton warehouse and drives the folding carton to move to another suction cup, and the other suction cup sucks the folding carton to realize the opening of the folding carton. For example, the patent number is 201120100340.3 discloses the carton picking mechanism of the cartoning machine line, which uses a turntable and a planetary transmission mechanism to drive multiple suction nozzles to sequentially suck up the folding cartons conveyed i...

AI Technical Summary

Problems solved by technology

The box picking mechanism of the packaging machine usually uses a suction cup to absorb the folding carton from the carton warehouse and drives the folding carton to move to another suction cup, and the other suction cup sucks the folding carton to realize the opening of the folding carton. For example, the patent number is 201120100340.3 discloses the carton picking mechanism of the cartoning machine line, which uses a turntable and a planetary transmission mechanism to drive multiple suction nozzles to sequentially suck up the folding cartons conveyed in the carton warehouse, and rotate the corresponding auxiliary suction nozzles, and then the suction nozzles and auxiliary suction nozzles The suction nozzles work together to open the folding carton, and finally send the opened carton to the carton conveyor chain through the auxiliary suction nozzle for the subsequent charging process; this technical solution has the following limitations: (1) The folding carton is transferred from the carton warehouse to the paper There is only one box opening action in the process of the box conveying chain, and there is a problem that the carton cannot be opened under the condition that the position of the suction nozzle is determined to cause suction deviation; On the one hand, the carton is stretched during the movement of the carton. In this opening method, the carton is not fully opened, or the carton rebounds to a half-open state after the carton is fully opened, which affects the overall follow-up feeding of the packaging machine. Process; (3) The suction cup drives the carton to complete the circular motion under the drive of the planetary mechanism. When the carton moves to the top of the carton conveyor chain, it will interfere with the partition on the carton conveyor chain. Make way above or let the carton fall freely on the conveyor chain at a very high position, which will also have an impact on the subsequent drug feeding process; (4) The placement of the suction cup on the carton is controlled by sensors and PLC Realization, the sensor is prone to misjudgment when the carton is not fully opened

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