Mould for covering node geogrid

Abstract

The invention relates to the technical field of geogrid molds, and particularly discloses a nodal geogrid wrapping mold which comprises a feeding mechanism and further comprises an air cylinder pressing mechanism used for pressure maintaining, an upper mold base connected with the air cylinder pressing mechanism and a lower mold base capable of being connected with the upper mold base to form a forming cavity. The inner diameter of the main runner is gradually increased from top to bottom, a pouring gate is formed in the side face of the lower die base and communicates with the main runner, the feeding mechanism abuts against the pouring gate, a base is further arranged on the bottom face of the lower die base, and a self-changing push rod is arranged in the base and placed in the main runner. The gradual change type design of the main flow channel and the design of the self-changing push rod matched with the main flow channel can meet the requirement for pushing the hot melt material, and meanwhile, a high-temperature, high-pressure and high-speed environment different from a high-temperature, high-pressure and high-speed environment in the prior art is created, that is, the pushing speed of the self-changing push rod is reduced, so that thermal shock caused to the grating belt is avoided.

Description

technical field [0001] The invention relates to the technical field of geogrid molds, in particular to a mold for covering node geogrids. Background technique [0002] Geogrid is a main geosynthetic material. Compared with other geosynthetics, it has unique performance and efficacy. It is often used as reinforcement of reinforced soil structure or composite material. Geogrids are divided into four categories: geogrids, steel-plastic geogrids, glass fiber geogrids and polyester warp-knitted polyester geogrids. The grid is a two-dimensional grid or a three-dimensional grid screen with a certain height made of polypropylene, polyvinyl chloride and other polymers through thermoplastic or molded. When used as a civil engineering, it is called geotechnical grille. [0003] At present, the most commonly used geogrid is a plate-shaped geogrid composed of grid belt connections. This geogrid generally has cladding nodes. In the existing geogrid production process, the methods of co...

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Problems solved by technology

[0006] The object of the present invention is to provide a mold for cladding node geogrid, which is used to solve the high temperature of hot melt material in the process of geogrid production in the prior art The problem of damage to the grille belt under the conditions of high pressure, high speed and high speed

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