Guide device for packaging material of plastic packaging machine

Abstract

The invention discloses a guide device for packaging material of a plastic packaging machine. The guide device comprises a guide groove, a guide groove base and a swing shaft. The guide groove is fixedly installed on the guide groove base, the guide groove base is movably installed on the swing shaft in a sleeved mode, and an upper swing arm and a lower swing arm are fixedly installed on the swing shaft. The guide device is characterized in that the upper swing arm and the guide groove base are connected through a first tension spring, and the lower swing arm makes moving contact with a cam. Through the structure of the guide device, opening and closing of the guide groove can be guaranteed under the action of the cam so that the packaging material can be guided smoothly, particularly in high speed operation, when the packaging material remains in the guide groove, the guide groove can be kept in a parallel state so as to protect the packaging material, deformation of the guide groove and damage to other parts are avoided, the service life of the machine is greatly prolonged, the working efficiency of the machine is kept, and the guide device has very high application value.

Description

technical field [0001] The invention relates to a plastic bag sealing machine, in particular to a guiding device for packaging objects of the plastic bag sealing machine. Background technique [0002] The guide device is the most basic configuration on the plastic bag sealing machine. It is a device that accurately pushes the package into the plastic bag after the package to be packaged passes through the left and right guide grooves. At present, most of the guide grooves of this packaging machine use cam swing arm mechanisms to complete their work requirements. Compared with other pneumatic and electrical controls, mechanical cam and swing arm mechanisms have the advantages of high accuracy and will not be unstable due to abnormal air pressure. Therefore, generally adopted. Since the accuracy of the mechanical cam and swing arm mechanism comes from the cam, the cam is forced to open and close the swing arm from the low point to the high point, so its timing and beat accura...

AI Technical Summary

Problems solved by technology

Since the accuracy of the mechanical cam and swing arm mechanism comes from the cam, the cam is forced to open and close the swing arm from the low point to the high point, so its timing and beat accuracy is very high, but it also has its disadvantages, the swing arm relies on the cam When moving from the low point to the high point, the swing arm is forced to be pushed away to open and close the guide groove. Since the guide groove is divided into two sets of left and right symmetrical installation and work synchronously, when the swing arm is at the lowest point of the cam, the left and right guide grooves are parallel. state, when the cam pushes the swing arm to move to the high point, the left and right guide grooves begin to close together, forming a figure-eight

It is inevitable that there will be malfunctions when the machine is working, and it is very likely that the objects to be packaged will remain in the left and right guide grooves. Safety issues, more likely to cause damage to related parts

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