Welding-free and paint-free color steel door body, door frame and assembled metal door

Abstract

The invention discloses a welding-free and paint-free color steel door body, a door frame and an assembled metal door. The door body is located in the door frame and matched with the same, the door body and the door frame are both formed by bending paint-free color steel plates, and a first door plank and a second door plank of the door body and an upper beam and a door stand column of the door frame are mechanically connected through an embedding device formed at a time, welding is not needed, and the problems of environment pollution and the like caused by welding can be avoided; product attractiveness is high and the market competitiveness is high; and the connecting strength of the adopted embedding device is high, the machining process is convenient, and the application of the color steel plate to the field of metal door manufacturing is realized in a breakthrough manner.

Description

technical field [0001] The invention relates to the field of metal door manufacturing, in particular to a non-welding and paint-free color steel door body, a door frame and an assembled metal door. Background technique [0002] At present, the door frame and door body of metal doors such as anti-theft doors and fire doors on the market are basically formed by bending cold-rolled steel plates, which are relatively bulky overall and require high mechanical strength for the connecting structure. The door frame is enclosed by the upper and lower beams and the left and right door columns. In order to improve the mechanical connection strength, the left and right door columns and the upper and lower beams are connected by welding process at their joints. The door body is made of a front panel and a rear panel, and the front and rear panels are connected by spot welding at their joints. After welding, the welds are polished and painted to form a metal product. This welding door fr...

AI Technical Summary

Problems solved by technology

This welding door frame has the following problems: 1. The harmful gas produced by welding and the dust produced by grinding not only pollute the environment, but also endanger the health of workers

2. The finished product is bulky, which leads to inconvenient transportation, and is prone to damage such as knocking, scratching, jamming, and pressing during transportation, and the cost of foreign trade transportation is too high

3. Welding has high technical requirements for welders, and the level of manual welding is uneven

[0003] Color steel plate is usually made by printing various patterns and patterns on the steel plate. Compared with the traditional metal paint plate, it has the advantages of high production efficiency and environmental protection; if the door frame or door body made by the printing plate process is welded and connected, it will As a result, the layer is destroyed, so that the paint-free printing plate cannot be well used in the actual production of metal doors, especially the digitally printed color steel plate, although very beautiful, but due to the requirements of the traditional metal door manufacturing process, it has not been applied to the present. field for making metal gates

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