Laminated slab reserved wire box hole mold
By designing a mold for pre-reserved junction box holes in composite slabs, the problem of interface direction caused by traditional pre-embedded junction boxes was solved, achieving accuracy and consistency of holes, reducing material waste and construction costs, and improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR TECH GRP SOUTH CHINA CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional composite slab pre-embedded junction boxes result in interface directions that are not conducive to on-site piping connections, increasing material waste and construction difficulty.
Design a mold for pre-drilled junction box holes in composite plates, including a first molding part, a second molding part, a magnetic base, and a connecting screw. It is fixed to the composite plate by magnetic adsorption to ensure the accuracy and consistency of the holes and facilitate on-site adjustment of the junction box interface direction.
Reduce material waste, lower construction costs, improve construction efficiency and quality, ensure the accuracy and consistency of holes, and facilitate on-site construction.
Smart Images

Figure CN224183334U_ABST
Abstract
Description
A mold for pre-drilling holes for wire boxes in composite boards Technical Field
[0001] This utility model belongs to the field of building construction, and in particular relates to a mold for pre-reserving junction box holes in composite slabs. Background Technology
[0002] In traditional factories, composite slabs are manufactured with pre-embedded junction boxes. However, during on-site pipeline installation, the interface direction of the pre-embedded junction boxes is often difficult to meet the requirements of on-site piping connections. This results in more bends in the on-site piping, smaller bending radii, unnecessary material loss and waste, and increased difficulty in later wiring and the risk of blockage. Summary of the Invention
[0003] The purpose of this utility model is to provide a mold for pre-reserved junction box holes in composite slabs, which can solve the problem that the interface direction is not conducive to on-site piping connection when pre-embedding junction boxes during the production of traditional composite slabs.
[0004] This utility model is implemented as follows: a mold for pre-reserved wire box holes in a composite plate includes a first molding part, a second molding part, a magnetic base, and a connecting screw. Both the first molding part and the second molding part are provided with vertical connecting holes. The connecting screw passes through the vertical connecting holes of the first molding part and the second molding part in sequence and is threadedly connected to the magnetic base.
[0005] Furthermore, the top end of the connecting screw is fitted with a locking device for securing the mold.
[0006] Furthermore, the bottom of the second molded part is provided with a groove, and the magnetic base is embedded in the groove, the shape and size of the groove matching the shape and size of the magnetic base.
[0007] Furthermore, the first molded part has a nut fixing groove at the bottom end of its vertical connecting hole, and a nut is fixedly installed in the nut fixing groove, and the connecting screw is threadedly connected to the nut.
[0008] Furthermore, the vertical connecting hole of the second molded part is provided with an internal thread, and the connecting screw is threadedly connected to the second molded part.
[0009] Furthermore, the first and second molded parts are made of plastic, while the connecting screw is made of metal.
[0010] Furthermore, both the first molded part and the second molded part are frustoconical in shape; wherein, the top dimension of the first molded part is larger than its bottom dimension, and the top dimension of the second molded part is smaller than its bottom dimension.
[0011] Compared with the prior art, the advantages of this utility model are as follows:
[0012] This invention provides a mold for pre-drilling junction box holes in composite slabs. The mold is embedded within the composite slab during production and is firmly attached to the slab mold via a magnetic base, preventing mold displacement during concrete pouring and vibration. After the composite slab is cast, the mold is removed, creating holes for the junction boxes. Because the shape of the mold matches the junction box dimensions, the accuracy and consistency of the pre-drilled holes are ensured. After the pre-drilled holes are formed, the mold is transported from the factory to the construction site for hoisting and installation of the junction boxes. These pre-drilled holes allow for the determination and adjustment of the junction box interface direction based on the actual conduit routing, facilitating construction and subsequent processes. Therefore, this mold has a simple structure, is easy to operate, and is reusable, reducing material loss and waste, lowering construction costs, and improving construction efficiency and quality. Attached Figure Description
[0013] Figure 1 is a schematic diagram of the structure of the composite plate reserved wire box hole mold assembly provided in the embodiment of this application;
[0014] Figure 2 is an exploded structural diagram of the mold for pre-reserved junction box holes in the composite plate provided in the embodiment of this application;
[0015] Figure 3 is an elevation sectional view of the mold for pre-reserved junction box holes in the composite plate provided in an embodiment of this application;
[0016] Figure 4 is an elevation sectional view of the first molded part provided in an embodiment of this application;
[0017] Figure 5 is an elevation sectional view of the second molded part provided in an embodiment of this application.
[0018] Marked in the image:
[0019] First molded part 1, first vertical connecting hole 11, nut fixing groove 12, second molded part 2, second vertical connecting hole 21, groove 22, magnetic base 3, connecting screw 4, nut 5, locking fastener 6. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0022] Please refer to Figures 1 to 3, which show a pre-reserved wire box hole mold for a composite plate provided in this embodiment, including a first molding part 1, a second molding part 2, a magnetic base 3, and a connecting screw 4. Please also refer to Figures 4 and 5. The first molding part 1 has a first vertical connecting hole 11, and the second molding part 2 has a second vertical connecting hole 21. The connecting screw 4 passes through the first vertical connecting hole 11 and the second vertical connecting hole 21 in sequence and is threadedly connected to the magnetic base 3.
[0023] Specifically, the material of the first molded part 1 is a plastic that is easy to shape and has high strength, such as nylon. The first molded part 1 has a nut fixing groove 12 at the bottom end of its first vertical connecting hole 11. A nut 5 is fixedly installed in the nut fixing groove 12, and the connecting screw 4 is threadedly connected to the nut 5. Through the above design, the first molded part 1 can be prevented from rotating relative to the connecting screw 4.
[0024] The material of the second molded part 2 is a plastic that is easy to shape and has high strength, such as nylon. It has a groove 22 at the bottom and a magnetic base 3 is embedded in the groove 22. The shape and size of the groove 22 match the shape and size of the magnetic base 3. By embedding the magnetic base 3 in the groove 22, the movement of the magnetic base 3 can be restricted, preventing it from being displaced relative to the second molded part 2.
[0025] The second vertical connecting hole 21 of the second molded part 2 is provided with an internal thread, and the connecting screw 4 is threadedly connected to the second molded part 2; through the above design, the second molded part 2 can be prevented from rotating relative to the connecting screw 4.
[0026] The magnetic base 3 can magnetically attract the template of the composite slab, facilitating its fixation and preventing mold displacement during concrete pouring and vibration. Preferably, the connecting screw 4 in this embodiment is made of metal, which can cooperate with the magnetic base to generate a magnetic attraction, further enhancing the stability of the mold.
[0027] The mold is embedded within the composite slab during production. Once the concrete has initially set, the mold is promptly removed for future use, preventing damage to the concrete. After removal, holes for installing junction boxes are formed in the composite slab. Because the mold's shape matches the junction box dimensions, the accuracy and consistency of the pre-drilled holes are ensured. After the holes are formed, the slab is transported from the factory to the construction site for hoisting and installation of the junction boxes. These pre-drilled holes allow for the determination and adjustment of the junction box interface direction based on the actual conduit routing, facilitating construction and subsequent procedures.
[0028] Furthermore, to facilitate the assembly and disassembly of the mold, a locking fastener 6 for securing the mold is fitted onto the top of the connecting screw 4. By turning the locking fastener 6, the entire mold can be disassembled or secured.
[0029] Furthermore, to facilitate mold disassembly, both the first molding part 1 and the second molding part 2 are frustoconical in shape; wherein, the top dimension of the first molding part 1 is larger than its bottom dimension, and the top dimension of the second molding part 2 is smaller than its bottom dimension. When disassembling the mold, the first molding part 1 is removed from above the stacked plate, and the second molding part 2 is removed from below the stacked plate. Due to the symmetrical frustoconical design, it is beneficial to overcome the adhesion between the mold and the stacked plate when removing the mold, thus facilitating mold removal.
[0030] In summary, the mold structure of this embodiment is simple, easy to operate, and reusable, which reduces material loss and waste, lowers construction costs, and improves construction efficiency and quality.
[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A mold for pre-drilling holes for junction boxes in composite slabs, characterized in that, It includes a first molded part, a second molded part, a magnetic base, and a connecting screw. Both the first molded part and the second molded part have vertical connecting holes. The connecting screw passes through the vertical connecting holes of the first molded part and the second molded part in sequence and is threadedly connected to the magnetic base.
2. The mold for creating a reserved line box hole in a laminated board according to claim 1, wherein The top end of the connecting screw is fitted with a locking device for securing the mold.
3. The mold for pre-reserved junction box holes in composite plates according to claim 1, characterized in that, The bottom of the second molded part is provided with a groove, and the magnetic base is embedded in the groove. The shape and size of the groove match the shape and size of the magnetic base.
4. The mold for pre-reserved junction box holes in composite plates according to claim 1, characterized in that, The first molded part has a nut fixing groove at the bottom end of its vertical connecting hole, and a nut is fixedly installed in the nut fixing groove. The connecting screw is threadedly connected to the nut.
5. The mold for pre-reserved junction box holes in composite plates according to claim 1, characterized in that, The second molded part has an internal thread in the vertical connecting hole, and the connecting screw is threadedly connected to the second molded part.
6. The mold for pre-reserved junction box holes in the composite plate according to any one of claims 1 to 5, characterized in that, The first and second molded parts are made of plastic, and the connecting screw is made of metal.
7. The laminated board reservation line box hole mold according to any one of claims 1 to 5, characterized by, Both the first molded part and the second molded part are frustoconical in shape; wherein, the top dimension of the first molded part is larger than its bottom dimension, and the top dimension of the second molded part is smaller than its bottom dimension.