Box body aluminum bottom rolling and sealing structure of food box and secondary stamping buckle lock-bottom rolling and sealing manufacturing method thereof

Abstract

The invention relates to a food box structure and a manufacturing method thereof, in particular to a secondary stamping buckle lock-bottom rolling and sealing method. The food box structure comprises a box body and a box bottom, the box body is made of iron plates, and the box bottom is made of aluminum plates. The manufacturing method includes the following steps: the aluminum plates are punched and flanged; the bottom edge of a manufactured iron box body is pre-rolled; primary lock-bottom edge rolling molding is performed on the box bottom and the box body on a first edge curling die; and secondary lock-bottom edge rolling molding is performed on a second curling die on the basis of the steps. By adopting the structure and the manufacturing method of the structure, the aluminum has good ductility, the iron box body and the aluminum box bottom of the food box can be rolled well, rolling seal performance is guaranteed, a process of waxing or oiling can be omitted, production method is simple, and production speed is rapid.

Description

technical field [0001] The invention relates to a structure of a food box and a manufacturing method thereof, in particular to a second-time punching button-bottom roll-sealing method. Background technique [0002] The body and the bottom of the traditional food box are made of iron plates, and the edge of the box body and the edge of the bottom of the box must be oiled or waxed during the rolling sealing process, so that the wax can be rolled. The sealing process is full of gaps to ensure the airtightness of the seam structure. Even so, the airtightness sometimes fails to meet the requirements, and even soldering is required at the seam to ensure the airtightness, and the scrap rate is high, resulting in increased costs. There are many production processes in the way of waxing, complicated operations, high cost, and poor working environment; and the oily or waxy substances used in the production process are chemicals, which generally contain harmful substances. Harmful sub...

AI Technical Summary

Problems solved by technology

[0002] The body and the bottom of the traditional food box are made of iron plates, and the edge of the box body and the edge of the bottom of the box must be oiled or waxed during the rolling sealing process, so that the wax can be rolled. The sealing process is full of gaps to ensure the airtightness of the seam structure. Even so, the airtightness sometimes fails to meet the requirements, and even soldering is required at the seam to ensure the seal, and the scrap rate is high, resulting in increased costs.

There are many production processes in the way of waxing, complicated operations, high cost, and poor working environment; and the oily or waxy substances used in the production process are chemicals, which generally contain harmful substances. During and after the use of the food box, harmful substances will gradually precipitate and contaminate the box body, thereby contaminating the food in the box

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