Adjustable mold for manufacturing door and window lintel precast block, and using method thereof

Abstract

The invention discloses an adjustable mold for manufacturing a door and window lintel precast block, and a using method thereof. The adjustable mold comprises a bottom template, transverse side molds,longitudinal side molds, inner mold clamps, a pressing plate, a U-shaped side mold clamp, a connecting mechanism, a fastening bolt and locating plates. A plurality of locating blocks, detachable inner molds and movable inner molds are vertically arranged on the upward surface of the bottom template; a rectangular cavity is defined by a pair of transverse side molds, two groups of longitudinal side molds and the upper end face of the bottom template; each pair of inner mold clamps is clamped in a pair of locating blocks; each group of detachable inner molds is vertically arranged between a pair of longitudinal side molds, and located in a pair of inner mold clamps; the movable inner molds are arranged between two adjacent groups of detachable inner molds, and are parallel to the longitudinal side molds; and the locating plates are arranged on the tops of the movable inner molds, and connected with the inner mold clamps by screws. According to the adjustable mold, the precision and thedismounting and mounting speed of the mold are improved, the duration of the working procedures is shortened, the mold can be recycled, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of concrete moulds, in particular to an adjustable mold for making door and window lintel prefabricated blocks and its application method. Background technique [0002] With the continuous development of the construction industry, in order to facilitate construction, the molds for making concrete prefabricated blocks have developed rapidly in recent years, and the concrete precast block molds are mainly used for pouring and forming concrete. However, most of the molds are integrally formed and difficult to disassemble. In addition, the texture of the formed billets is relatively fluffy, and it is not easy to demould, which may easily cause defects in the precast concrete blocks, and it is easy to cause the billets to drop slag during transportation. The quality of the precast concrete blocks is not good. It is easy to have adverse effects on the load bearing of buildings. [0003] In house construction, doo...

AI Technical Summary

Problems solved by technology

[0004] At present, there are two methods for pouring the lintel. The first method is on-site pouring, that is, after the reinforcement is solidified and fixed on the top surface of the hole, the formwork is processed and installed, and then the concrete is poured. The disadvantage of this method is that each lintel needs to be poured separately After demolition, it is easy to cause related quality defects such as missing edges and corners, and poor appearance of door and window lintels and prefabricated blocks

The sizes and specifications of door and window lintels and prefabricated blocks are different, and the number of turnovers of wooden formwork is limited and the strength is poor, resulting in poor precision of prefabricated parts, high construction costs and low work efficiency

Another method is prefabricated lintels. Although it meets the requirements of wall reform in the development of building industrialization, due to the wide variety of door and window specifications, different lengths and heights, workers need to process many different specifications in advance before prefabricating lintels. Lintel formwork

Although this method ensures the size and appearance and improves the construction efficiency, most of the formwork of the lintel is loose formwork, so the formwork of the prefabricated lintel can only be used for a single time, resulting in excessive construction waste and waste of resources. increase construction cost

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