Control method of continuous stepper motor driving horizontal and vertical sealing roller packaging machine

Abstract

The invention relates to a continuous type stepping motor drive transverse longitudinal sealing roller packing machine and a control method thereof. The packing machine comprises a longitudinal sealing dragging drive mechanism, a transverse sealing rotary drive mechanism, a finish product bag cutting mechanism, a material stuffing device and a packing machine system controller. Embedded type control technology is adopted, a longitudinal sealing roller and a transverse sealing roller are driven by a stepping motor directly to drag bag and rotate and moving speed of the longitudinal sealing roller and the transverse sealing roller is uniform in linear speed in a transverse sealing point. The packing machine reasonably avoids the phenomenon and shortage that a finish product bag is swelled and wrinkled. The number of mechanical components of the whole packing machine are small, so that assembly modulation cost is low, mechanical maintenance volume is small and production period of the whole packing machine is short. The control method comprises that the production process of the packing machine needs three elements, namely, bag making, bag sealing and bag stuffing. The three elements become moving main bodies which are respectively independent on a mechanical structure, namely, longitudinal sealing bag dragging, transverse sealing rotary sealing and feeding stuffing and dependent on a moving principle.

Description

technical field [0001] The invention belongs to the field of packaging machinery and equipment, and relates to a control method for a continuous stepping motor driven horizontal and vertical sealing roller packaging machine, especially suitable for bag making, sealing and filling of the continuous stepping motor driven horizontal and vertical sealing roller packaging machine Control of the production process. Background technique [0002] Continuous automatic packaging machine is a major mainstream in the packaging machine industry in the world. Compared with intermittent automatic packaging machine, it has the characteristics of fast material packaging and high efficiency, so it is widely used. And from the three elements of the production process of the automatic packaging machine (bag making, sealing, filling), it can be known that the working performance of the two processes of bag making and sealing is directly related to the product quality of the material packaging ba...

AI Technical Summary

Problems solved by technology

[0004] ①Based on comprehensive reasons such as machining errors of mechanical transmission components, assembly and debugging technology proficiency, and bag length controller performance factors, it is difficult to overcome the bagging and censer phenomenon of finished bags of packaging bags to a certain extent;

[0005] ②When there is a deviation in the paper feeding length, it is necessary to replace the corresponding transmission gear (that is, change the number of teeth of the fixed-length gear of the packaging machine) to adjust the deviation, and the adjustment range is limited;

[0006] ③When the bag length error is large, it is difficult to eliminate the error based on the mechanical transmission coordination factor;

[0008] ⑤ The mechanical structure of vertical sealing roller traction differential adjustment, horizontal sealing unequal speed (eccentric wheel), this mechanical part occupies 70% of the mechanical transmission parts of the whole machine and 60% of the space of the whole machine, which also increases the cost of assembly and commissioning , and the production cycle of the whole machine

[0011] ① When the bag length is changed, first, adjust the bag length parameters of the controller, and second, adjust the eccentricity of the non-uniform eccentric wheel to ensure the sealing requirements of bag making, so the adjustment is troublesome, and every change The bag length specification needs to be adjusted once, which also brings inconvenience to the user's operation and use;

[0013] ③The best effect of bag length and trademark tracking accuracy is ±1mm, which is difficult to meet the bag length accuracy requirements of high-standard packaging bags;

[0016] ②Although the range of bag length can be extended to 500mm, the accuracy of fixed length and label tracking is greater than 4mm, which cannot meet the accuracy requirements of continuous packaging machine pull bag control

[0019] ②Use the control motor to automatically adjust the eccentricity of the non-uniform speed eccentric wheel. Also, in the presence of the mechanical transmission mechanism of the non-uniform speed eccentric wheel, a part of the mechanical transmission and electrical control parts are added, which makes the continuous packaging machine equipment more complicated.

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