Film overlay device of shoe cover machine and film overlay method using the device

Abstract

A film covering of a shoe cover machine comprises a heating device arranged in the film covering device and a heat shrinking film conveyed to the above of the pedal. The heating device comprises a hot air cavity; a hot air duct is arranged in the hot air duct; a pedal seals the outlet of the hot air cavity or the hot air duct; the air inlet of the hot air duct is provided with a fan; a heater is arranged in the hot air duct; the outside of the hot air cavity is provided with a heat insulating layer; a repositor is arranged in a pedal lifting mechanism; a control system controls the fan and the temperature of the hot air in the hot air cavity. As the hot air is pre-stored in the hot air duct, the film covering device of the shoe cover machine has rapid film covering and high work efficiency. As the pedal seals the outlet of the hot air cavity, the present invention can prevent the deformation of the heat shrinking film in the non-working state.

Description

Technical field: [0001] The invention relates to the technical field of shoe cover machines, in particular to a film covering device for a shoe cover machine and a film covering method using the device. Background technique: [0002] At present, some shoe cover machines use the principle of thermal shrinkage of the heat-shrinkable film to fix the film on the shoes. Just proposed a kind of " automatic shoe cover machine " as No. 03233497.4 of Chinese patent. In this technical solution, the automatic shoe cover machine includes: heat-shrinkable film roll, film feeding roller, upper cutter, lower cutter, and pedals are installed in the box in sequence, and a U-shaped heating device is located below the pedal, and the pedal is fixedly connected to the pedal. Rod, the bottom of the pedal rod is connected with the return spring, the pedal rod is connected with the lever, and the upper cutter or the lower cutter is connected with one end of the lever. It wraps the heat shrinkable...

AI Technical Summary

Problems solved by technology

Since the heating of the U-shaped heating device itself takes a certain time, the user must wait for the U-shaped heating device to complete its own heating before using it, which makes the working efficiency of the automatic shoe cover machine low.

[0004] 2. After wrapping a shoe cover, the user must wait for the U-shaped heating device to cool down, and then the film feeding mechanism can send the heat-shrinkable film to the top of the pedal again, otherwise the heat-shrinkable film will automatically shrink, making the next shoe cover The waiting time for the parcel is too long, which brings inconvenience to the use of the automatic shoe cover machine

At the same time, it causes a lot of waste of heat energy

[0005] 3. Since the above scheme uses a U-shaped heating device to directly shrink the heat-shrinkable film, there is no hot air in a specific direction, which makes the wrapping effect of the heat-shrinkable film unsatisfactory

[0006] 4. Since the above scheme has no temperature control mechanism, the automatic shoe cover machine cannot realize the reliable wrapping of the heat shrinkable film, and the safety performance is not ideal

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