Non-welding pressing plate

The utility model discloses a non-welding pressing plate, which is characterized in that: a button head which is in integration structure with a pipe is installed in a circular hole. The utility model discloses a non-welding pressing plate, which effectively enhances production efficiency, and at the same time guarantees the problems of the squareness of the pipe end and the pressing plate and the leakage. The main principle is that: the end part of the aluminium tube is pressed into required button head shape by utilizing cold extrusion technology, and then is sheathed into the pressing plate, the button head and the pressing plate are swelled together and the pancake diameter of button head can be freely selected in 1.2cm-2.5cm (pipe diameter). Since the principle of new technique is using an integrated pipe end to directly seal with a subassembly but not traditionally using the pressing plate end to indirectly seal with the subassembly, the leakage problem in vehicle running process is greatly reduced.