A pillow packaging machine and its control method

Abstract

The invention provides a control method of a pillow type packaging machine. The control method of the pillow type packaging machine comprises the steps that the number of pulses received by a film feeding servo driver and a cutter servo driver is obtained according to intervals between material hook signals, the variable between the number of received pulses and the number of sent pulses is calculated at the same time, and the position relation between a driving shaft and a driven shaft is corrected through the functions of a built-in synchronous grabbing and correcting shaft according to the variable; a mark on a packaging film is sensed through a color code signal so that phase deviation of a feeding shaft can be obtained, and phase correction is conducted according to the phase deviation through the alignment function of a built-in cam of a film feeding shaft; whether the position of a packaging material is correct or not is judged through sensing of a cutting-preventing signal, and if not, a cutter is stopped cutting, and a macro is executed to achieve cutting prevention; whether an empty bag exists before bags enter a packaging area is determined according to an empty-bag-preventing signal, and if yes, a macro is executed to enable the film feeding shaft and a transversely-cutting shaft to stop operating temporarily when the empty bag reaches the specific position. According to the control method of the pillow type packaging machine, through the synchronous grabbing and correcting function and the alignment function of the cam, the packaging precision of the pillow type packaging machine is improved, optimum control is achieved, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of automatic control of packaging machinery, and relates to a packaging machine, in particular to a pillow packaging machine and a control method thereof. Background technique [0002] Pillow packaging machine is a kind of packaging equipment with very strong packaging ability, which can automatically complete the processes of bag making, filling, sealing, cutting, and finished product removal. It can be used for packaging products such as food, medicine, chemicals, and daily necessities. It is the latest automatic continuous shrink packaging equipment in China. It adopts quartz far-infrared tube heating, which is energy-saving and efficient; the shrinkage temperature and motor transmission speed are stable and adjustable, and the adjustment range is wide; the original drum rotation device can work continuously; the existing The pillow packaging machine is mainly divided into four parts, the film feeding shaft, the ve...

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Problems solved by technology

[0010] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a pillow packaging machine and its control method, which is used to solve the problem that there are obvious differences in the accuracy and efficiency of packaging and cutting of the pillow packaging machine in the prior art

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