A kind of preparation method of mental package jar
Technical field
The present invention relates to a kind of preparation method of mental package jar.
Background technology
Mental package jar as shown in Figure 1, it comprises a columniform can body 1 ', jar end 2 ', cover 3 ', can body 1 ' external wall of upper portion face is provided with a butt welding ear 4 ', on this butt welding ear 4 ' handle 5 ' is installed.The colorful metal enamelled coating of one deck is arranged on the can body 1 ' usually, and this metal enamelled coating can be used as the outer surface layer of product, can weld ear 4 ' on the top of can body 1 ' outside wall surface, mounting knob 5 ' again on weldering ear 4 '.But when welding ear, directly butt welding ear on being coated with the metallic paint layer is welded, owing to include inflammable component such as lipid in the composition of paint vehicle itself, when high-temperature soldering, the metal enamelled coating burns easily, even the weld of can body is punctured, and causes the packing jar to scrap.
Summary of the invention
In order to overcome above-mentioned shortcoming, the purpose of this invention is to provide a kind of preparation method of mental package jar.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of preparation method of mental package jar, this preparation method comprises the steps:
(1), printing layer of metal enamelled coating on a side surface of metal iron sheet blank;
(2), described metal iron sheet is cut into rectangle one by one according to pre-set dimension;
(3), two opposed side edges butt joints of the rectangular metal iron sheet after will cutting, and butt welding place, to form cylindrical can body, described metal enamelled coating constitutes the outer surface layer of described can body;
(4), two of described can body relative ends being carried out flange handles;
(5), at the bottom of the bottom package jar of described can body;
(6), carry out the wiredrawn edge processing at the top of described can body installation jar circle or at the top of described can body;
(7), on the external wall of upper portion face of described can body, choose a pair of welding region, on a pair of described welding region, respectively weld a weldering ear, wherein, before the welding of weldering ear, earlier the metal enamelled coating on the described welding region is abolished;
(8), on a pair of described weldering ear mounting knob, promptly finish the packing jar making.
Preferably, abolishing of metal enamelled coating in step (7) adopts following method to carry out: described can body is clamped with hold assembly, order about described can body and hold assembly and relatively move, in the process of relatively moving, utilize the effect of frictional force that described metal enamelled coating is abolished.Further preferably, described relatively moving to sliding or rotating.
The present invention compared with prior art has following advantage:
The present invention is by with relative friction between clamping part and can body, and to broken lacquer of welding region of pending weldering ear, this method is easy and simple to handle, and production cost is low.
Description of drawings
Accompanying drawing 1 is the structural representation of can body in the present embodiment;
Accompanying drawing 2 is the schematic diagram of jar circle in the present embodiment.
Wherein: 1, can body; 2, jar end; 3, cover; 4, weldering ear; 5, handle; 6, wiredrawn edge; 7, jar circle.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Now make a kind of mental package jar as shown in Figure 1, its preparation method comprises the steps:
(1), printing layer of metal enamelled coating on a side surface of metal iron sheet blank;
(2), according to the size of required tank body, the metal iron sheet is cut into rectangle one by one according to pre-set dimension;
(3), the butt joint of rectangular metal iron sheet two opposed side edges after will cutting, and butt welding place, to form cylindrical can body 1, the metal enamelled coating constitutes the outer surface layer of can body 1;
(4), two of can body 1 relative ends being carried out flange handles;
(5), at the bottom of the bottom package jar of can body 12;
(6), a jar circle 7 is installed, as shown in Figure 2, or carry out wiredrawn edge at the top of can body 1 and handle, form wiredrawn edge 6 as shown in Figure 1, according to the form configuration cover 3 of jar circle 7 or wiredrawn edge 6 at the top of can body 1;
(7), on the external wall of upper portion face of can body 1, choose a pair of welding region, on a pair of welding region, respectively weld a weldering ear 4, wherein, before 4 welding of weldering ear, earlier the metal enamelled coating on the welding region is abolished; Broken lacquer process is carried out in accordance with the following methods:
Can body 1 usefulness hold assembly is clamped, order about can body 1 and hold assembly and relatively move, slide or rotate, in the process of relatively moving, utilize the effect of frictional force that the metal enamelled coating is abolished.
(8), on a butt welding ear 4 mounting knob 5, promptly finish the making of whole packing jar.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.