Pressing mold for two-layer edge curling opening sealing of sealed aluminum foil lunch box and opening sealing method

Abstract

The invention relates to a pressing mold for two-layer edge curling opening sealing of a sealed aluminum foil lunch box. The pressing mold is characterized by comprising an upper mold part, a lower mold part and an upper and lower mold guide part, wherein the upper mold part comprises a mold mounting plate, an upper mold plate, an upper piston, an upper shearing opening seat, an upper shearing opening, an upper female mold and an upper female mold installing plate; the lower mold part comprises a lower edge pressing ring, a lower female mold, a lower female mold base, a lower air cylinder, a lower air cylinder ejector rod and a lower mold plate; the upper and lower mold guide part comprises guide rods and guide sleeves; the shape of the upper female mold is matched with that of an inner hole of the upper shearing opening for achieving guiding, the upper female mold installing plate is connected with the upper female mold, the upper piston acts on the upper female mold installing plate, the upper shearing opening seat is connected with the upper shearing opening, the upper mold plate is connected with the upper shearing opening seat, an external press is connected with the upper mold plate, and the whole upper mold part is driven to upwards and downwards move; and the shape of an inner hole of the lower edge pressing ring is matched with that of the lower female mold for achieving the guiding, an edge curling groove is formed in the lower edge pressing ring, the lower air cylinder pushes the lower edge pressing ring to do rebounding type movement through the lower air cylinder ejector rod, the lower female mold is fixedly arranged on the lower female mold base, and the lower female mold base is fixed on the lower mold plate.

Description

technical field [0001] The invention relates to a sealing pressing mold for an aluminum foil lunch box, specifically, a pressing mold for sealing the two-layer crimp sealing of an aluminum foil lunch box, which belongs to the technology of one-time automatic crimp sealing of an aluminum foil lunch box and an aluminum foil lunch box cover field. Background technique [0002] There are generally three ways to seal the existing aluminum foil lunch box: [0003] The first is to apply heat-sealing glue on the aluminum foil lid of the lunch box, and achieve the purpose of sealing by mechanical heating. The defect of this sealing method is that the heat-sealing glue is easy to melt when the aluminum foil lunch box contains food or is heated. , resulting in failure to achieve the sealing effect or even food deterioration; [0004] The second type of sealing is the lid of a bulk aluminum foil lunch box, which is manually sealed by a single sheet, which is likely to cause secondary ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is: the sealing effect of the existing sealed aluminum foil lunch box cannot achieve the sealing effect, resulting in food deterioration or shortened shelf life, which is easy to cause secondary pollution to the food, and the flatness of the cover is low, and the aesthetics is low. and difficult to label

Images