CN103057789A - Box body aluminum bottom rolling and sealing structure of food box and secondary stamping buckle lock-bottom rolling and sealing manufacturing method thereof - Google Patents

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

Seaming structure and two times punch thereof are buckled end seaming method for making at the bottom of the food box box body aluminium

Technical field

The present invention relates to structure that relates to food box and preparation method thereof, especially curling and sealing method at the bottom of the two times punch button.

Background technology

Be iron sheet material at the bottom of its box body of traditional food box tank and the box, the rim roll place of its box body and the rim roll place at the bottom of the box all want oiling or waxing in the seaming process, to allow wax in the seaming process, be full of the slit, guarantee the leak tightness of seaming structure, however sometimes still out of reach requirement of its leak tightness, even need to carry out at the seaming place soldering with the assurance sealing, and reject rate is higher, causes cost to raise.It is many to adopt the mode of waxing to carry out production process, trivial operations, and cost is high, poor working environment; And the material such as employed oil or wax is chemical in this production process, generally all contains objectionable impurities, and in the seaming production process and later on objectionable impurities can be separated out gradually and pollutes the box body in the use procedure of food box, and then pollutes food in the box.Thereby can produce deleterious effect to human body and environment, the serious consequence that this problem causes has caused attention both domestic and external.

Summary of the invention

The purpose of this invention is to provide at the bottom of a kind of food box box body aluminium seaming structure and two times punch thereof and buckle end seaming method for making, it need not waxing or oiling, can guarantee the leak tightness of seaming structure, and its production method is simple, can realize triple seven layers of bead structure, guarantee preferably the seaming quality.

Seaming structure at the bottom of the food box box body aluminium of the present invention comprises at the bottom of box body, the box, it is characterized in that described box as irony sheet material, is the aluminum plate material at the bottom of the described box.

The two times punch of seaming structure is buckled end method for making at the bottom of the above-mentioned food box box body aluminium, may further comprise the steps:

(1) aluminum plate material shear is die-cut, flange; The irony box body base that makes is rolled up in advance;

(2) with at the bottom of the box, box buckles end crimping moulding for the first time on one curling die;

(3) on the basis of abovementioned steps (2), again detain end crimping moulding at two road curling dies.

Adopt said structure and preparation method thereof, because aluminium sheet has preferably ductility, so can well intervolve at the bottom of its irony box body of food box and the aluminium matter box, assurance intervolves leak tightness, so that can save the process procedures of waxing or oiling, its production method is simple, and speed of production is fast.

Description of drawings

Fig. 1 is rim roll structural representation before the punching press of seaming structure at the bottom of the food box box body aluminium of the present invention.

Fig. 2 is rim roll structural representation behind the seaming shaping structures at the bottom of the food box box body aluminium of the present invention.

Fig. 3 is that the present invention detains end crimping moulding exploded drawings for the first time.

Fig. 4 is that the present invention detains end crimping moulding figure for the first time.

Fig. 5 is that the present invention detains end crimping moulding exploded drawings again.

Fig. 6 is that the present invention detains end crimping moulding figure again.

The specific embodiment

Below in conjunction with accompanying drawing invention is described in further detail:

See Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, seaming structure at the bottom of the food box box body aluminium of the present invention, comprise box body 1 and box body rim roll 11 thereof, at the bottom of the box 2 and box at the bottom of rim roll 21, described box body 1 is 2 to be aluminium panels at the bottom of the described box of iron sheet material, and described box body rim roll 11 is at skin, and rim roll 21 is at internal layer at the bottom of the described box, the width of described box body rim roll 11 greater than box at the bottom of the width of rim roll 21, described box body rim roll 11 and rim roll 21 inside turnups at the bottom of the box.

The two times punch of seaming structure is buckled end seaming method for making at the bottom of the box body aluminium of the present invention:

At first make at the bottom of the aluminum box: blank at the bottom of on the plate shear raw material being cut into box, again blank is sent into punch press, utilize mould to finish simultaneously blanking and pull and stretch and obtain at the bottom of the box, that is: shear die-cut → flange.

Next makes irony box body:

Irony sheet material → shearing → volume circle → pressure bone → box body moulding

The box body base that makes is rolled up in advance; Again with at the bottom of the box, the box body places patrix, counterdie is one curling die 3, detains for the first time end crimping moulding, see Fig. 4, Fig. 5, Fig. 6, shown in Figure 7, described box body rim roll 11 is at skin, at the bottom of the described box rim roll 21 at internal layer, described box body rim roll 11 and rim roll 21 inside turnups at the bottom of the box.Then on the basis of first button end crimping moulding, counterdie is that two road crimpings touch 4, carries out two road crimpings, so that detain for the first time end bead structure compacting, this moment, seaming structure vapor seal was effective at the bottom of the gained box body box through twice crimping flow process.

Claims (2)

1. seaming structure at the bottom of the food box box body aluminium comprises at the bottom of box body, the box, it is characterized in that described box as irony sheet material, is the aluminum plate material at the bottom of the described box.

2. the two times punch of seaming structure is buckled end seaming method for making at the bottom of the food box box body aluminium according to claim 1, it is characterized in that may further comprise the steps:

(1) aluminium sheet is die-cut, flange; The irony box body base that makes is rolled up in advance;

(2) with at the bottom of the box, box buckles end crimping moulding for the first time on one curling die;

(3) on the basis of abovementioned steps (2), again detain end crimping moulding at two road curling dies.

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