Assembled easily demoulding compression concrete small prefabricated component mould
By using a modular design for small precast concrete components, the L-shaped side plate with grooves and protrusions, drainage holes, reinforcing ribs, and a handle structure solves the problem of difficult demolding in traditional molds, achieving a fast and non-destructive demolding effect, and improving production efficiency and mold lifespan.
Patent Information
- Application Number
- CN202521545710.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-23
AI Technical Summary
The traditional design of molds for small precast concrete components, which are either integrated or structurally fixed, leads to difficulties in demolding, consumes manpower, and is prone to damaging components and molds, thus affecting production efficiency and cost.
The mold adopts a modular design, utilizing the grooves and protrusions of the L-shaped side plates, drainage holes, reinforcing ribs, and handle structure, combined with bolt connections, to achieve quick disassembly and stability of the mold.
It achieves a fast and non-destructive demolding process, reduces manpower consumption, lowers the defect rate and mold wear, and improves production efficiency and mold life.
Smart Images

Figure CN224675162U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to an assembly-type easy-to-demold compressible concrete small precast component mold. Background Technology
[0002] Compressed concrete is a new type of material that improves the density and strength of concrete by applying pressure to freshly mixed concrete to expel excess water. However, the traditional molds used in the production of these small precast compressed concrete components currently have many insurmountable drawbacks. Traditional molds are often one-piece or have a relatively fixed structure. The concrete solidifies and takes shape inside the mold. Because compressed concrete adheres more tightly to the inner wall of the mold during the molding process, the friction and adhesion between the concrete and the inner wall of the mold are greater than those for ordinary concrete, making the demolding process extremely difficult. This results in operators usually needing to expend a lot of manpower, using various tools to knock, pry, and other operations to remove the component from the mold.
[0003] This challenging demolding method not only significantly prolongs the production cycle and increases time costs, but also easily causes damage such as bumps, chipped corners, and cracks to the precast components due to improper operation during demolding, leading to a higher defect rate and directly impacting product quality and production efficiency. Furthermore, frequent demolding operations can accelerate the wear and tear on the mold itself, shortening its lifespan and further increasing production costs. Therefore, developing a mold for small precast concrete components that enables rapid and non-destructive demolding has become a crucial problem urgently needing to be solved in the field of mold technology. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an assembly-type easy-to-demold compressible concrete small precast component mold.
[0005] This modular, easily demolded, compressible concrete small precast component mold includes: a bearing base plate, L-shaped side plates, and bolts; the two L-shaped side plates are symmetrically arranged, each L-shaped side plate is divided into a long side and a short side, and bolt holes are provided on both sides of the long side. The two L-shaped side plates are fixed by bolts that pass through and are fixed between the bolt holes; the bolts are located on the outside of the short side; the bottom of the L-shaped side plate is attached to the top of the bearing base plate.
[0006] Preferably, the inner wall of the long side of the L-shaped side plate is provided with a groove, and the end of the short side of the L-shaped side plate is provided with a protrusion, the shape of the protrusion and the shape of the groove are matched with each other.
[0007] Preferably, the bottom of the short side of the L-shaped side panel is provided with a drainage hole.
[0008] Preferably, the short side outer wall of the L-shaped side plate is provided with a first reinforcing rib, and the long side outer wall of the L-shaped side plate is provided with a second reinforcing rib.
[0009] As a preferred embodiment, the second reinforcing rib has a handle on its sidewall, and the outer edge of the handle has anti-slip texture.
[0010] Preferably, the bolt includes a threaded rod and a head, with the threaded rod connected to a nut and a fluororubber washer; the nut is fixed to the outer side of the long side of the L-shaped side plate, and the fluororubber washer is attached between the bolt head and the L-shaped side plate, and the fluororubber washer is attached between the nut and the L-shaped side plate.
[0011] The beneficial effects of this utility model are:
[0012] 1) The L-shaped side plate of this utility model adopts a modular design, which not only facilitates quick assembly, but also makes it easy to replace and repair parts when needed, improving the flexibility and convenience of production. At the same time, the connection method of screw and nut ensures the integrity and stability of the mold, and also facilitates the disassembly work in the later stage.
[0013] 2) The design of this utility model takes into account the problem of close fit with compressed concrete. By designing a rectangular cross-section groove on the long side of the L-shaped side plate and setting a matching protrusion at the short side end, a precise fit between the concrete and the mold is achieved, reducing the friction and adsorption forces during demolding, thereby simplifying the demolding process and reducing damage caused by improper operation.
[0014] 3) This utility model effectively prevents the water in the concrete from corroding the mold by designing drainage holes at the bottom of the short side of the L-shaped side plate, thus extending the service life of the mold.
[0015] 4) The present invention provides a first reinforcing rib and a second reinforcing rib on the side wall of the L-shaped side plate, which improves the overall structural strength of the mold and ensures the safety of the production process.
[0016] 5) A handle is provided on the second reinforcing rib in the middle of the long side of the L-shaped side plate of this utility model. The anti-slip texture design on the outer edge of the handle increases the stability and safety of operation and further improves production efficiency. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the L-shaped side plate structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the bolt structure of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Pressure-bearing base plate; 2. L-shaped side plate; 21. Bolt hole; 22. Groove; 23. Protrusion; 24. Drain hole; 25. First reinforcing rib; 26. Second reinforcing rib; 27. Handle; 3. Bolt; 31. Screw; 32. Nut; 4. Fluororubber gasket. Detailed Implementation
[0021] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.
[0022] As one embodiment, a modular, easily demolded, compressible concrete small precast component mold is proposed, such as... Figure 1-3 As shown, it includes a pressure-bearing base plate 1, L-shaped side plates 2, and bolts 3; the two L-shaped side plates 2 are symmetrically arranged, and the L-shaped side plates 2 are divided into long sides and short sides. Bolt holes 21 are provided on both sides of the long side. The two L-shaped side plates 2 are fixed by bolts 3 that pass through and are fixed between the bolt holes 21; the bolts 3 are located on the outside of the short side; the bottom of the L-shaped side plate 2 is attached to the top of the pressure-bearing base plate 1, and the surface flatness error of the pressure-bearing base plate 1 is ≤0.5mm;
[0023] like Figure 1 As shown, the inner wall of the long side of the L-shaped side plate 2 is provided with a groove 22, and the end of the short side of the L-shaped side plate 2 is provided with a protrusion 23. The shape of the protrusion 23 and the shape of the groove 22 are matched with each other, and the fitting gap between the groove 22 and the protrusion 23 is 0.2±0.05mm. The groove 22 and the protrusion 23 of the two L-shaped side plates 2 are interlocked with each other. Through this tight fit, not only can the accuracy of the side plate splicing be ensured, but the sealing performance of the mold and the overall structural stability can also be effectively improved.
[0024] like Figure 2 As shown, the bottom of the short side of the L-shaped side plate 2 is provided with several drainage holes 24. The diameter of the drainage holes 24 is 3-5mm and the spacing between the drainage holes 24 is 50-80mm. When the compressed concrete is injected into the mold, under the action of pressure, the excess water will be discharged from the drainage holes 24 pre-set at the bottom of the short side of the L-shaped side plate 2. This drainage mechanism can accelerate the solidification speed of the compressed concrete and significantly improve the density and strength of the precast components.
[0025] like Figure 2 As shown, a first reinforcing rib 25 is provided in the middle of the short side outer wall of the L-shaped side plate 2, and the thickness of the first reinforcing rib 25 is 1.3 times that of the L-shaped side plate 2; a second reinforcing rib 26 is provided in the middle of the long side outer wall of the L-shaped side plate 2, and the thickness of the second reinforcing rib 26 is 1.5 times that of the L-shaped side plate 2; by setting the first reinforcing rib 25 and the second reinforcing rib 26, the overall structural strength of the mold is improved, and the safety of the production process is ensured.
[0026] like Figure 2 As shown, the second reinforcing rib 26 has a handle 27 on its side wall, and the outer edge of the handle 27 has anti-slip texture with a texture depth of 0.5-1mm; this makes it easier for operators to apply force when handling and disassembling the mold, thus improving the ease of operation.
[0027] like Figure 3 As shown, bolt 3 includes a screw 31 and a head. Screw 31 is connected to nut 32 and fluororubber washer 4. Nut 32 is fixed to the outer side of the long side of L-shaped side plate 2. Fluororubber washer 4 is attached between bolt head and L-shaped side plate 2. Fluororubber washer 4 is attached between nut 32 and L-shaped side plate 2. After the compressed concrete has solidified, the operator only needs to unscrew the connecting nut 32. Since L-shaped side plate 2 adopts an assembly structure, unlike the traditional integrated mold that is tightly connected to concrete, L-shaped side plate 2 can be easily separated from precast components, achieving the effect of rapid demolding.
Claims
1. A modular, easily demolded, small-scale precast concrete component mold, characterized in that, include: The pressure-bearing base plate, L-shaped side plates, and bolts are provided. The two L-shaped side plates are symmetrically arranged, and each L-shaped side plate is divided into a long side and a short side. Bolt holes are provided on both sides of the long side. The two L-shaped side plates are fixed by bolts that pass through and are fixed between the bolt holes. The bolts are located on the outside of the short side. The bottom of the L-shaped side plate is attached to the top of the pressure-bearing base plate.
2. The modular, easily demolded, compressible concrete small precast component mold according to claim 1, characterized in that, The long side of the L-shaped side panel has a groove on its inner wall, and the short side of the L-shaped side panel has a protrusion. The shape of the protrusion matches the shape of the groove.
3. The modular, easily demolded, compressible concrete small precast component mold according to claim 1, characterized in that, The short side of the L-shaped side panel has a drainage hole at the bottom.
4. The modular, easily demolded, compressible concrete small precast component mold according to claim 1, characterized in that, The short side outer wall of the L-shaped side plate is provided with a first reinforcing rib, and the long side outer wall of the L-shaped side plate is provided with a second reinforcing rib.
5. The modular, easily demolded, compressible concrete small precast component mold according to claim 4, characterized in that, The second reinforcing rib has a handle on its side wall, and the outer edge of the handle has anti-slip texture.
6. The modular, easily demolded, compressible concrete small precast component mold according to claim 1, characterized in that, The bolt consists of a shank and a head. The shank is connected to a nut and a fluororubber washer. The nut is fixed to the outside of the long side of the L-shaped side plate. The fluororubber washer is attached between the bolt head and the L-shaped side plate, and the fluororubber washer is attached between the nut and the L-shaped side plate.