Heat sealing mechanism of band and film heat sealing molding device

Abstract

The invention provides a heat sealing mechanism of a band and film heat sealing molding device and belongs to the technical field of machinery, aiming at solving the problem that the heat sealing effect on a thin film and a film pressing band of an existing heat sealing mechanism is poor. The heat sealing mechanism of the band and film heat sealing molding device comprises a mounting base, two groups of driving roller sets and two heat sealing tool bits; each driving roller in each group of driving roller set is rotatably connected onto the mounting base and is connected through a driving belt made of a high-temperature-resisting heat-conducting material; the driving belts on the two groups of driving roller sets penetrate through the two heat sealing tool bits; each heat sealing tool bit is connected with a driving source I; each heat sealing tool bit is further connected with an adjusting assembly I; after adjustment, the driving sources I can drive the heat sealing tool bits to get close to the corresponding driving belts or form a gap with the corresponding driving belts. By adopting the heat sealing mechanism provided by the invention, the thin film and the film pressing band can be enabled to keep a straight state and are fitted relatively well; the heat sealing between an ultra-wide type greenhouse thin film and the film pressing band can be realized and the heat sealing effect is improved.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a heat-sealing mechanism of a heat-synthesizing device with a film. Background technique [0002] Greenhouse is a frame-covered structure with excellent thermal insulation performance. It is a very important facility in the process of modern agricultural production and has been widely used in agricultural production in most areas of our country. The existing greenhouses all include a skeleton and a suspended cable-membrane structure. The suspended cable-membrane structure is a composite of plastic film and pressure-bearing cables. The film is fixed by heat sealing, and because the pressure-bearing cable is fixed between the plastic film and the plastic film belt, it is easy to slip between the pressure-bearing cable and the plastic film and the plastic film belt. Therefore, in order to facilitate farming in greenhouses, large-span greenhouses are required To improve the cost req...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned heat-sealing device is only suitable for the heat-sealing of the cable and film. If the above-mentioned heat-sealing device is used to heat-bond the laminating belt and the film, since the heating block and the pressing plate are fixed on the tensioning mechanism, and the conveyor belt is pushed toward it. The other conveyor belt, that is to say, the two conveyor belts are not straight, and the two conveyor belts will respectively push the lamination belt and the film outward, and the lamination belt is made of fiber bundles heat-bonded, with a certain width and hardness , it is not easy to bend and deform, so that it is easy to cause a good fit between the film and the lamination belt due to the difference in deformation force between the two during the heat sealing process, especially for ultra-wide greenhouse films over 12 meters, That is, the film and the lamination tape cannot maintain a straight state, and the adhesion is poor, which will lead to incomplete heat sealing of some parts, and the heat sealing effect is poor

And the above-mentioned devices are all heated on one side, that is to say, the film is only melted and heat-sealed on the lamination belt, and the effect of heat-sealing is relatively poor.

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