Abrégé

Provided is a brick clamping device, which comprises a frame (10). Brick clamping holes (30) are arranged in the frame. There are brick clamping airbags (4) on the sidewalls of each brick clamping hole. There are gas paths (5) communicating with each brick clamping airbag in the frame. The brick clamping airbag comprises an elastic membrane which consists of an inner layer and an outer layer. The outer layer enwraps the inner layer from outside. The outer layer is an elastic membrane layer (42). The inner layer is a rigid plate layer (43). The elastic membrane improves the rigidity on the basis of the original flexibility, so the elastic membrane cannot be easily pierced by a rough and uneven sidewall of a brick. Furthermore, the elastic membrane ensures that the clamped sidewalls of a green brick are uniformly stressed, and the green brick cannot be damaged easily.

Classes IPC  ?

• B28B 13/04 - Éjection des objets façonnés

Abrégé

A core pulling molding device of a pressure-type hollow brick machine comprises an upper pressure head (1), a mold framework (2) and a lower mold (3). Mold cavities (20) are formed in the mold framework, and the upper pressure head and the lower mold are respectively positioned above and below the mold cavities. A mold core plate (4) is arranged below the lower mold, and mold core rods (41) which can penetrate slidingly through the lower mold and extend upwards into the mold cavities are arranged on the mold core plate. In the production process of hollow bricks, the invention makes the material distribution, molding and demolding easier.

Classes IPC  ?

• B28B 1/44 - Fabrication d'objets façonnés à partir du matériau en enfonçant des noyaux dans des moules déjà remplis, pour former des objets creux
• B28B 7/10 - Moules avec des moyens incorporés ou supportés par ces moules, pour l'éjection des objets moulés
• B28B 7/16 - Moules pour la fabrication d'objets façonnés avec des cavités ou des ouvertures