Blocking piece for ceiling molding

A polymer mold cover for ceiling molding addresses the heaviness and disposability issues of traditional molds by being lightweight, reusable, and enabling utility passage, thus enhancing installation efficiency and structural strength.

IR114143BUndetermined Publication Date: 2026-06-27

Patent Information

Authority / Receiving Office
IR · IR
Patent Type
Patents
Filing Date
2024-09-09
Publication Date
2026-06-27

AI Technical Summary

Technical Problem

Existing ceiling molding systems face challenges with one-sided block joists and unoliths, which are heavy, lack structural role, and require disposable molds that do not facilitate utility passage or efficient installation.

Method used

A polymer mold cover made of polypropylene, designed for easy installation and utility passage, is created using CATIA software, manufactured via injection molding, and tested for structural integrity.

Benefits of technology

The polymer mold cover is lightweight, reusable, reduces installation time, lowers production costs, enhances beam strength, and allows utility passage, while minimizing environmental impact.

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Abstract

The beam and block roof is a type of one-sided slab. It consists of three elements: slab, beam and block (or unolith). The designed piece is a suitable replacement for block beam and unolith beam roofs, and the history and research conducted on these roofs has been. Because the beginning and end of the unolith replacement forms are open, and in the roof at the end of the beam during concreting, the end and beginning of the formwork need to be closed, a cover has been designed for it. After the replacement formwork is placed and connected to each other, it is also connected to the main beams and an invented cap appropriate to the size of the formwork is closed at its end. After the concreting is done, you must wait approximately 7 days for the concrete to take the shape of the Unolit replacement mold and dry, and then the molds can be easily removed from the mold without the need for release agents (before or after the concreting stages). You can also create a place for the passage of the facilities by placing the Unolit replacement mold cover in the place of the beams before concreting.
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Description

Description of the invention Title of the invention Blocking piece for ceiling molding Technical background of the relevant invention Connections Technical problem and stating the objectives of the invention The main purpose of the invention of this piece was to close the beginning and end of the block and unolith replacement formwork at the beginning and end of the beam during concreting, and other purposes of the invention include facilitating the passage of installations through the block replacement formwork. On the other hand, designing a sliding connection point between the cover piece and the main formwork for ease of installation and quick closing was another purpose of the invention of this piece. Other advantages of this piece include the fact that it is not a one-time use piece and its ability to be recycled and produced repeatedly. A description of the state of the prior art and the history of developments related to the claimed invention. Due to the one-sided nature of the block joist slab, the use of joists and blocks or unolith in the ceiling, the heavy nature of the block in the ceiling, and the lack of structural role of the block, the need was seen to invent alternative molds for blocks and unolith made of propylene. After the invention of alternative molds for blocks or unolith during concreting, due to the opening of the beginning and end of the mold at the connection to the joist, it was deemed necessary to create a piece to close the beginning and end of the mold, which would both prevent concrete from entering the mold and falling out during concreting, and also allow for the passage of utilities through the roof easily by installing the appropriate space on the mold. Hence, the idea of ​​inventing a cap that can be easily matched to polymer molds instead of blocks and a place to easily pass utilities through this cap, as well as using polypropylene materials to produce this piece and make it recyclable and cost-effective, was formed. Providing a solution to an existing technical problem along with an accurate, sufficient, and integrated description of the invention The inventor's idea has been reviewed with a mold designer and design has begun. After reaching the ideal design and performing resistance tests on the designed part in CATIA software, the obtained design has been handed over to the drawing and mold making team and the main mold has been made using iron alloy. Then these parts enter the sparking stage and at this stage the surface of the main mold is polished using diesel and electricity. After polishing, these parts are assembled and sent to the injection workshop for sample production. At this stage, the main mold is placed on the material injection machine and the raw material is poured into the hopper of the injection machine in the form of transparent granules. Through the injection screw, the raw material is sent into a cylinder heated by a heating element and compressed. The material is melted by the heat of the element and the heat caused by pressure and turns into a soft paste. This paste material is then sent into the mold with injection pressure and takes the shape of the mold. Then the part in the mold is cooled.The cooled piece is removed from the piece after the mold is opened and can be used. The polymer mold cover that replaces the block created by plastic injection has dimensions of 50 x 22 x 87 cm and weighs 1 kg. The polymer mold cover that replaces the block is used as a cover for the replacement molds of Unolith and blocks. The advantages of these molds are: Advantages of the piece Blocking and closing the ends of the Unolith replacement molds on both sides of the piece to achieve the desired size along the beam and preventing concrete from entering the replacement molds of Unolith. The design of the polymer mold cover that replaces the block was done in CATIA software. Also, a force analysis was performed accurately and a force bearing simulation was performed in CATIA software. The manufactured piece was also loaded experimentally under the pressure and force examined in the analyses, and the results were consistent with the analyses performed. Explanation of shapes, maps and diagrams 1-Side view of the half piece 2-Side view 3-Side view of the half piece 4-Three-dimensional mold 5-Front view 6- A section from the bottom of the piece 7-Connecting the cap to the mold A clear and precise statement of the advantages of the claimed invention over prior inventions. The advantages of the piece are blocking and closing the ends of the Unolith replacement forms on both sides of the piece to achieve the desired size along the beam and preventing concrete from entering the Unolith replacement forms. 1- Due to its lightness, it is faster to transport and install than cement blocks. 2- Due to its lightness and greater length compared to cement blocks, the speed of work increases. 3- Since it is not disposable and can be used for a long time, the production cost is reduced. 4- The weight of the roof is reduced and the strength of the completed beam structure is increased. 5- By creating empty space in the ceiling space, it becomes possible to pass utility pipes through the ceiling. 6- In terms of reducing environmental impacts and pollution, it is much more suitable than cement blocks because it is not disposable. Description of at least one implementation method for implementing the invention After the replacement formwork for the Unolith is placed and connected to each other, it is also connected to the main beams and the invented cover suitable for the size of the formwork is closed at its end. After the concreting is done, it is necessary to wait approximately 7 days for the concrete to take the shape of the replacement formwork for the Unolith and dry, and after that, the forms can be easily removed from the formwork without the need for release agents (before or after the concreting stages). It is also possible to create a place for the passage of the facilities by placing the replacement formwork cover for the Unolith before concreting. Explicit mention of the industrial application of the invention The piece has the potential to be industrialized and can be used in the stiffening part of the building to close the beginning and end of the forms for roof formwork using formwork ties.

Claims

Claims What is claimed: Claim 1) A blocking piece for roof formwork is an alternative to block joist and unolith joist roofs. This invention is for blocking and closing the ends of unolith replacement forms on both sides of the piece to achieve the desired size along the joist and prevent concrete from entering the unolith replacement forms. Claim 2) According to claim 1, the raw material is poured into the hopper of the injection machine in the form of transparent granules. Through the injection screw, the raw material is sent into a cylinder heated by a heating element and compressed. The material is melted by the heat of the element and the heat from the pressure and turns into a soft paste. This paste material is then sent into the mold by injection pressure and takes the shape of the mold. Then the part inside the mold is cooled. After the mold is opened, the cooled part is removed from the part and can be used. Claim 3) According to claim 1, the block replacement block is made by plastic injection molding, measuring 50 x 22 x 87 cm and weighing 1 kg. The polymer block replacement mold cap is used as a cap for the Unilite and block replacement molds.