Flue structure one-step forming die
By designing a rectangular three-dimensional frame structure and inclined contact surfaces, the problems of insufficient connection rigidity and difficult demolding of traditional flue molds were solved, realizing an efficient and safe flue forming process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR FOURTH BUREAU FOURTH CONSTR ENG
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional flue structure molds are prone to overlapping gaps at the joints, resulting in insufficient connection rigidity, difficulty in demolding, and poor sealing performance, which affects construction quality and safety.
Design a one-time molding mold for flue structure. The mold uses long and wide side components and corner components to form a rectangular three-dimensional frame structure. The assembly gaps are staggered, and inclined contact surfaces and reinforcing ribs are set to enhance the connection rigidity of the components and simplify the demolding process.
It improves the structural stability and demolding efficiency of the mold, reduces grout leakage, ensures the quality of flue molding and construction safety, and reduces construction costs.
Smart Images
Figure CN224374418U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue casting mold technology, and in particular to a one-time forming mold for flue structures. Background Technology
[0002] In the field of building construction, the flue structure, as a key component for ventilation and smoke extraction in buildings, directly affects the building's functionality and safety through its molding quality. Traditional one-piece molding molds for flue structures often employ integral or spliced designs, which have numerous drawbacks in practical applications. When spliced molds connect components, the assembly gaps tend to overlap at the same height, leading to insufficient connection rigidity. Under the lateral pressure of concrete, the mold components are prone to Euler buckling, resulting in inner membrane collapse and causing engineering quality accidents. Furthermore, during the demolding process of traditional molds, the high friction between components makes demolding difficult and inefficient, and the mold is easily damaged during demolding. Simultaneously, the poor sealing performance at the mold joints leads to severe grout leakage during concrete pouring, wasting materials and affecting the flue molding quality. Utility Model Content
[0003] The purpose of this utility model is to solve the above-mentioned problems by providing a one-time forming mold for flue structures.
[0004] The technical solution of this utility model is implemented as follows:
[0005] This utility model provides a one-time forming mold for a flue structure, the mold comprising an outer mold and an inner mold, wherein the inner mold includes:
[0006] Corner components are located at the corners of the inner mold;
[0007] The long-side component is located at the long side of the inner mold;
[0008] A wide-side component is located at the wide side of the inner mold;
[0009] The two sides of the long and wide side components are interlocked with the corner components;
[0010] After the components are fastened together, they form a three-dimensional frame structure with a rectangular cross-section, and its longitudinal extension constitutes the outline of the inner mold cavity for flue forming.
[0011] The advantages or beneficial effects of the above technical solutions include at least the following:
[0012] Enhancing structural stability: By creating height differences between the long-side and wide-side components and the corner components, the assembly gaps are staggered to form a stepped support structure. This effectively avoids the problem of a sudden drop in connection stiffness caused by overlapping gaps, significantly enhancing the overall ability of the mold to resist lateral pressure from concrete, preventing the inner mold from collapsing, and ensuring the safety and quality of construction. The inclined contact surfaces of the long-side and wide-side components and the corner components reduce the resistance to component movement. After the concrete has solidified, it can be quickly demolded by simple tapping, greatly reducing the difficulty of demolding, shortening the demolding time, and improving construction efficiency. The inclined contact surface design increases the connection... The increased contact area of the joints ensures a more uniform stress distribution and generates a normal self-tightening force under the lateral pressure of the concrete. This wedge-shaped self-tightening effect effectively reduces grout leakage, guaranteeing the appearance quality and dimensional accuracy of the flue molding. The reinforcing ribs and integrated snap-fit plates on the components significantly enhance the overall strength of the components, reduce deformation during use, increase the reusability of the molds, and lower construction costs. The wire binding holes at the top of the components allow for secondary reinforcement, ensuring stable mold assembly. The lifting hooks on the top of the long-side components facilitate hoisting, improving the convenience of mold installation and disassembly, and thus increasing construction efficiency. Attached Figure Description
[0013] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.
[0014] Figure 1 A schematic diagram of the outer mold and inner mold of an embodiment of the present invention is shown;
[0015] Figure 2 This diagram shows the structure of the inner mold after assembly according to an embodiment of the present invention.
[0016] Figure 3 A schematic diagram of the structure of the wide-side component according to an embodiment of the present invention is shown;
[0017] Figure 4 A schematic diagram of the structure of the long side component according to an embodiment of the present invention is shown;
[0018] Figure 5 A schematic diagram of the corner component according to an embodiment of the present invention is shown;
[0019] Figure 6 The diagram shows the structure of the long side component after the inner mold of this utility model is assembled, wherein the component highlighted in red is the long side component;
[0020] Figure 7A schematic diagram of a lifting hook according to an embodiment of the present invention is shown;
[0021] Reference numerals: 10, Inner mold; 11, Corner component; 12, Long side component; 13, Wide side component; 101, First inclined contact surface; 102, Second inclined contact surface; 103, Reinforcing rib; 104, Buckle plate; 105, Wire binding hole; 20, Outer mold; Detailed Implementation
[0022] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.
[0023] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0024] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0025] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0026] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.
[0027] Reference Figure 1 and Figure 2A one-time forming mold for a flue structure, the mold includes an outer mold 20 and an inner mold 10, wherein the inner mold 10 includes: a corner member 11 located at the corner of the inner mold 10 and having a right-angled side; a long side member 12 located at the long side of the inner mold 10; and a wide side member 13 located at the wide side of the inner mold 10.
[0028] Among them, the two sides of the long and wide side components 13 are interlocked with the corner components 11;
[0029] After the components are snapped together, a three-dimensional frame structure with a rectangular cross-section is formed. Its longitudinal extension forms the outline of the inner mold 10 cavity for flue forming. After the components are snapped together, a concrete pouring area is formed between the inner mold 10 and the outer mold 20. The tied steel mesh is placed in this area, and then concrete is poured. After the outer mold 20 and the inner mold 10 are removed, the flue can be formed.
[0030] Based on further improvements to the above structure, the heights of the long-side member 12 and the wide-side member 13 are greater than or less than the height of the corner member 11. The height difference between the long-side and wide-side members 13 and the corner member 11 causes the assembly gaps of the corner member 11 and the long-side and wide-side members 13 to be misaligned in the height direction, creating a stepped support structure. If the assembly gaps of the long-side and wide-side members coincide in the height direction, the connection stiffness of the members will drop sharply, resulting in Euler buckling under the lateral pressure of the concrete, ultimately causing the inner formwork 10 to collapse inward, leading to an engineering failure. Figure 6 and Figure 1 As shown;
[0031] Furthermore, both sides of the long and wide side members 13 are provided with first inclined contact surfaces 101, the inclined surfaces of which face outwards from the inner mold 10; the corner members 11 are provided with second inclined contact surfaces 102, the two second inclined contact surfaces 102 forming a right angle, their inclined surfaces facing inwards from the inner mold 10. Figure 1 As shown, after the inner mold 10 is assembled, the first inclined contact surface 101 and the second inclined contact surface 102 fit together. By setting this inclined contact surface structure, the resistance to the movement of the long and wide side members 13 towards the center of the inner mold 10 is reduced. After the concrete has solidified, the long and wide side members 13 can be struck with tools such as hammers to move them into the inner mold 10, thereby achieving rapid demolding, effectively reducing the difficulty of demolding and improving demolding efficiency; at the same time, the inclination angle of the first inclined contact surface 101 and the second inclined contact surface 102 is between 5° and 15°, which increases the compression of the joint gap by 30%-50%. The inclined surface increases the joint contact area by 1.5-2 times compared to the vertical surface, resulting in a more uniform stress distribution. Under the action of the lateral pressure of the concrete, a normal self-tightening force is generated, which significantly reduces grout leakage through the wedge-shaped self-tightening effect.
[0032] Furthermore, the component is also equipped with reinforcing ribs 103, several of which are arranged along the height direction of the component, which helps to enhance the overall strength of the component, reduce deformation, and improve the reusability. The long and wide components also have snap-on plates 104, which are integrally formed on the reinforcing ribs 103 and extend to both sides of the component. When the inner mold 10 is installed, the two sides of the long and wide side components 13 are interlocked with the corner components 11. The snap-on plates 104 are integrally formed on the reinforcing ribs 103, which helps to enhance the structural strength of the snap-on plates 104.
[0033] All components have wire binding holes 105 on their tops for binding with wires to provide secondary reinforcement between components. Lifting hooks for hoisting can also be welded to the top of the long side component 12 to facilitate hoisting of the long side component 12.
[0034] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0035] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.
Claims
1. A flue structure one-step forming die, characterized by: The mold includes an outer mold (20) and an inner mold (10), wherein the inner mold (10) includes: Corner component (11) is located at the corner of the inner mold (10); The long-side component (12) is located at the long side of the inner mold (10); A wide-side member (13) is located at the wide side of the inner mold (10); The two sides of the long and wide side member (13) are interlocked with the corner member (11); After the components are fastened together, they form a three-dimensional frame structure with a rectangular cross-section, and its longitudinal extension constitutes the inner mold (10) cavity outline of the flue forming.
2. The one-time forming mold for the flue structure according to claim 1, characterized in that: The height of the long side member (12) and the wide side member (13) is greater than or less than the height of the corner member (11); the long and wide side members (13) and the corner member (11) have a height difference, so that the assembly gap of the corner member (11) and the assembly gap of the long and wide side members (13) are misaligned in the height direction.
3. The one-time forming mold for the flue structure according to claim 1, characterized in that: Both sides of the long and wide side member (13) have a first inclined contact surface (101), and the inclined surface of the first inclined contact surface (101) faces the outside of the inner mold (10). The corner member (11) has a second inclined contact surface (102), the second inclined contact surfaces (102) have a right angle between them, and the inclined surface of the second inclined contact surface (102) faces the inside of the inner mold (10); After the inner mold (10) is assembled, the first inclined contact surface (101) and the second inclined contact surface (102) are in contact.
4. The flue structure one-step forming mold according to claim 3, characterized by: The component is also equipped with reinforcing ribs (103), and several reinforcing ribs (103) are arranged along the height direction of the component.
5. A flue construction one-shot mould according to claim 4, characterised in that: The long and wide components also have snap-on plates (104), which are integrally formed on the reinforcing ribs (103) and extend to both sides of the components; When the inner mold (10) is installed, the two sides of the long and wide side members (13) are engaged with the corner members (11).
6. The flue structure one-step forming mold according to claim 1, characterized by: Each component has a wire binding hole (105) on its top for binding with wire to reinforce the components.