The utility model relates to the technical field of plastic-steel door and window
welding equipment, and discloses a plastic-steel door and window
welding machine which comprises a
workbench and a pair of placing plates, an upper mounting frame is fixedly connected to the position, close to the rear side, of the upper end of the
workbench, and a control panel is fixedly arranged at the position, close to the middle of the outer side, of one side of the upper mounting frame. A third electric sliding rail is fixedly arranged at the position, close to the rear end, of the middle of the upper end of the
workbench, and a third electric sliding block is electrically and slidably arranged at the upper end of the third electric sliding rail. Compared with a traditional
passive cooling mode at a
welding position, the device adopting the design has the advantages that the rapid cooling structure is arranged during
actual use, so that compared with the traditional
passive cooling mode at the welding position, the device adopting the
semiconductor cooling mode can greatly improve the cooling forming efficiency, and the adaptive clamping structure is arranged, so that the cooling forming efficiency is greatly improved; and the device can automatically conduct adaptive limiting and fixing adjustment according to plastic steel door frames of different models, and the using limitation is reduced.