A dual belt residual film bundling device has been designed to address the problems of complex structure, low service life of bundling belts, adjustable tightness of film bundling, uncertain unloading position, and poor compatibility with existing residual film recycling machines in the existing residual film bundling process. This article introduces the composition and working process of the residual film bundling structure, with a focus on optimizing the design of the bundling device, tensioning device, and film carrying box. By conducting a dynamic analysis of the bundling process, the structural and operational parameters of each functional component were determined. To verify the operational performance and efficiency of the dual belt residual film bundling device, three factor three-level quadratic regression experiments were conducted with bundling chamber angle, bundling belt friction coefficient, and bundling belt linear speed as experimental factors, and residual film bundling rate, residual film bundling density, and bundling efficiency as response values. A regression model was established to analyze the effects of each factor on residual film bundling rate, residual film bundling density, and bundling efficiency, and parameter optimization and experimental verification were carried out.The experimental results show that the factors affecting the bundling rate of residual film are in descending order: bundling chamber angle>bundling belt linear velocity>bundling belt friction coefficient; The factors that affect the density of residual film bundling are in the following order: bundling belt line speed>bundling chamber angle>bundling belt frictioncoefficient; The factors that affect packaging efficiency are in the following order: the friction coefficient of the strapping belt>the angle of the strapping chamber>the linear velocity of the strapping belt. Theoretical optimal design parameters: bundling chamber angle is 33°, packing belt friction coefficient is 0.83, and packing belt linear velocity is 1.03 m/s. The research results provide reference for the design and high-quality operation of residual film bundling devices.
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