Production method and die of prefabricated supporting sleeve used in cooperation with split bolt

Abstract

The invention discloses a production die of a prefabricated supporting sleeve used in cooperation with a split bolt. The production die is formed by connecting two same die assemblies through a hinge side by side. The die comprises a die body, a plurality of shape setting die plates located in the die body and communicated with one another, and a fixing pipe groove. Each shape setting die plate is composed of a middle and two ends. Each end is of a frustum-shaped amplification head structure with the shape same as that of the corresponding middle. Each frustum-shaped amplification head structure is composed of a cone body and an end column body. Die releasing agents are painted to the interior of the die, concrete or pebble mortar with the weight of pebbles gradually decreased is poured, a PVC thin-walled pipe is pressed into the pipe groove, the die is closed, after the die removing strength is achieved, the die is opened, the prefabricated supporting sleeve is taken out, the PVC thin-walled pipe is cut off along the end of the prefabricated supporting sleeve, and the prefabricated supporting sleeve is manufactured. The die is simple in structure, convenient to operate and easy to master. A method is high in construction speed, the prefabricated supporting sleeve can be prefabricated on a construction site, mass production can also be performed in a prefabrication factory, and the concrete slurry leakage problem is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of concrete wall formwork installation and reinforcement construction at non-waterproof parts, and in particular relates to a production method of a prefabricated support sleeve used in conjunction with pull bolts and a mold thereof. Background technique [0002] For the installation and reinforcement construction of concrete wall formwork in non-waterproof parts, the sleeves of the pull bolts in the traditional process are PVC plastic thin-walled sleeves. Due to the thin wall thickness of the sleeve and the low compressive strength of the material, it cannot withstand too much pressure. In order to ensure the cross-sectional width of concrete walls and beams, it is necessary to set up steel bar spacing frames or other types of supports. On the one hand, the investment cost of steel bars and other types of pads is increased, and the economic effect is not good; on the other hand, the stress system is not good...

AI Technical Summary

Problems solved by technology

[0002] For the installation and reinforcement construction of concrete wall formwork in non-waterproof parts, the sleeves of the pull bolts in the traditional process are PVC plastic thin-walled sleeves. Due to the thin wall thickness of the sleeve and the low compressive strength of the material, it cannot withstand too much pressure. In order to ensure the cross-sectional width of concrete walls and beams, it is necessary to set up steel bar spacing frames or other types of supports. On the one hand, the investment cost of steel bars and other types of pads is increased, and the economic effect is not good; on the other hand, the stress system is not good. Reasonably, the function of the steel bar spacing frame or other types of support is to tighten the formwork to the outside of the component. Improper handling can easily cause the formwork to expand outwards, while the tension bolts press the formwork inward. Bolts and distance frames or other types of supports need to be installed in staggered positions, resulting in a different point of action for the external tension of the pull bolts and the internal support force of the distance frames and other supports, which can easily cause unevenness on the formwork surface In addition, due to the small contact surface between the ordinary PVC casing and the formwork, there will inevitably be gaps, so the phenomenon of concrete grout leakage occurs at the bolt hole, forming honeycomb and color changes at the bolt hole, which seriously affects the concrete. Appearance Quality

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