Foaming device

The utility model relates to a foaming device. The foaming device comprises a foaming piece, a vacuum pump and a filling piece, the foaming piece comprises a first foaming unit, the first foaming unit comprises a hollow groove and a pouring hole, the hollow groove is formed in the bottom end of the foaming piece, and the pouring hole is formed in the side face of the foaming piece; the vacuum pump comprises a vacuum pipeline, one end of the vacuum pipeline is connected with the vacuum pump, and the other end of the vacuum pipeline penetrates through the hollow groove to be connected with the foaming piece; and the filling piece is communicated with the filling hole and is used for filling a foaming material into the foaming piece. According to the scheme provided by the invention, when the foaming reaction is carried out, the vacuum pump is adopted to synchronously extract air in the foaming piece, so that the speed that the foaming piece diffuses towards the periphery is increased, the end far away from the