Efficient thermal forming food storage box production line

Abstract

The invention relates to the technical field of food storage box production, and provides an efficient thermal forming food storage box production line. The production line comprises a control system, a plastic roll conveying device arranged on a rack, a plastic film heating and softening device, a thermal forming mold, a blow molding device, a pushing mechanism, a suction cup transferring device, a finished product conveying device and a rim charge collecting device; the plastic film heating and softening device comprises a heat preservation bin, a clamping and conveying mechanism, a plurality of temperature sensors, a plurality of PTC heaters, transformers matched with the PTC heaters in number and a plurality of lifting mechanisms matched with the PTC heaters in number; the PTC heaters are arranged in the heat preservation bin at intervals in the mode that the PTC heaters can be adjusted in a vertical lifting mode through the lifting mechanisms and are located below a plastic film conveyed by the clamping and conveying mechanism to heat the plastic film, and the temperature sensors are arranged in the heat preservation bin in an array mode to detect the temperatures of all areas in the heat preservation bin. The problem that the defective rate of finished products produced by an existing food storage box production line is high is solved.

Description

technical field [0001] The invention relates to the technical field of food storage box production, in particular to a high-efficiency thermoformed food storage box production line. Background technique [0002] A variety of plastic products can be seen or used in people's lives, such as cups, saucers, food plates, toys, helmets, as well as auto parts, architectural decorations, chemical equipment, etc. Plastic processing and production include injection molding and thermal Forming, such as cups, saucers, food dishes, toys, helmets, and automotive parts, architectural decorations, chemical equipment, etc. In the existing production of plastic containers such as thermoformed food storage boxes, the plastic rolls are usually transported to a thermoforming machine to heat the plastic film, which usually needs to be heated to between 160°C and 200°C (depending on the softening settings of different plastics) Temperature), and then send the softened plastic film to the thermofor...

AI Technical Summary

Problems solved by technology

However, in this production process, the heating and softening of the plastic film is very important. If the middle heating is too high and the softening is too high or the heating and softening on both sides is not enough, then the effect is not ideal when it is sent to the thermoforming mold for blow molding. The products on both sides Insufficient softening of the plastic film makes the thickness of the box body or lid of the food storage box uneven and becomes a defective product, or the middle temperature is too high so that the middle of the box body or lid is too thin and easy to be damaged and becomes a defective product

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