Self-adjusting type thin film rolling mechanism

Abstract

The invention belongs to the technical field of packaging machines, and relates to a self-adjusting type thin film rolling mechanism. The self-adjusting type thin film rolling mechanism comprises a machine frame provided with a discharging roller and a storage roller, wherein the discharging roller provided with a thin film in a rolling mode, and the discharging roller and the storage roller are tightened through the thin film. The self-adjusting type thin film rolling mechanism is characterized in that the discharging roller is coaxially provided with a friction wheel, a flat plate is hinged to the part, below the friction wheel, of the machine frame, a wheel yoke is installed at the position, opposite to the friction wheel, of the flat plate, and a balance weight is fixed to the free end of the flat plate. A supporting axle is arranged at the position, above the discharging roller, of the machine frame, the supporting axle is provided with a rotary table in a sliding fit mode, the rotary table is connected with a wheel pressing rod, and a pressing wheel connected with the tail end of the wheel pressing rod presses a thin film face of the discharging roller. A threaded rod is connected to the rotary table, a spring rod is hung on the threaded rod, and the lower end of the spring rod is connected with the free end of the flat plate. The speed for unrolling the thin film can be adjusted according to thin film faces with different thicknesses.

Description

technical field [0001] The invention belongs to the technical field of packaging machinery. Background technique [0002] A film is a thin, flexible, transparent sheet made of plastic, adhesive, rubber, or other material. PVA-coated high-barrier film is made by coating PVA with nano-inorganic substances on polyethylene film and then printing and compounding plastic film. Without greatly increasing the cost, its barrier performance is not only obvious It is better than EVOH five-layer co-extrusion film, and the packaging cost is also greatly reduced. This not only ensures all the quality requirements of the packaged object for aseptic packaging, but also greatly reduces the cost of aseptic packaging for food processing enterprises. It can be used for packaging Beverages, fruit juices, milk, soy sauce and vinegar, etc. [0003] In the existing plastic processing plants, after the plastic film is produced, it needs to be wound on a reel for storage. The existing winding proce...

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Problems solved by technology

[0003] In the existing plastic processing plants, after the plastic film is produced, it needs to be wound on a reel for storage. The existing winding process is to tighten and rotate the storage roller, and the film will come out of the discharge roller of the film production machine. The disadvantage of winding the film is that when the film of the discharge roller is thicker, the weight of the discharge roller and the film is larger, and more pulling force is needed to pull it to release the film, and the film is broken if the pulling force is too large; When the film of the discharge roller is thin, if the speed is slow, wrinkles will occur, but the existing speed of rolling or unwinding the film is fixed and cannot be adjusted according to the thickness of the film surface

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