Automatic film spreading and laminating device

Abstract

The invention provides an automatic film spreading and laminating device which is used for solving the problem that film rollers are easy to be elongated to deform and serious in hemming due to being spread by means of tensile force. The device comprises a rack, a walking wheel, an earth covering disc, a film roller and a film pressing roller. The device is characterized in that a film roller frame is hinged on the rack or a film pressing roller frame; the film pressing roller frame is fixed on the rack; the film roller contacts with the film pressing roller; and a free end of a mulching film is located at the tangency part of the film roller and the film pressing roller. When the rack advances, friction force exists between the film pressing roller and the film roller; and under the function of the friction force, the film roller is driven to rotate in a contrary direction to spread the mulching film, so that the problem that the mulching films are easy to be elongated to deform and serious in hemming after the spreading in the prior art is solved and the utilization rate of the mulching film is improved.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to an automatic film spreading device. Background technique [0002] In the 1960s, mulching film technology emerged and became popular in Japan, Europe and the United States and other countries. In 1979, plastic film mulching technology was introduced into my country. After the 1980s, the area of ​​farmland covered by plastic film and the extension area continued to expand, the types of cultivated crops continued to increase, and the effect of increasing production and income was remarkable. Now the annual area of ​​mulching is more than 200 million mu. Most of the mulching films are generally polyethylene transparent plastic films with a thickness of 0.005-0.015 mm. The main way of covering is flat furrow covering. However, in the existing film covering technology, when carrying out plastic film covering, the free end is fixed and then moves forward with...

AI Technical Summary

Problems solved by technology

However, in the existing film covering technology, when carrying out plastic film covering, the free end is fixed and then moves forward with the traction device, and the film roller is spread on the soil by the pulling force of the plastic film, so that the plastic film is deformed and elongated after being stressed, and both sides are curled This phenomenon often occurs, so when using it, not only must the width of the mulch film be greater than the width of the covered soil, but also the waste of mulch material caused by elongation and narrowing and curling, and the deformation and thinning of the mulch film , also affects the use effect of the film

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