Jaw structure and mold for high-weather-resistant high-durability formwork shell

Abstract

This utility model provides a bite structure and mold for a high-weather-resistant, high-durability, non-removable mold shell. One end of the bite structure's cross-section has a first horizontal section, a protrusion, a groove, and a second horizontal section sequentially arranged along the thickness direction. The first and second horizontal sections have the same width. The protrusion and groove have approximately the same shape, are adjacent, and face opposite directions. The other end of the bite structure's cross-section has a connecting post. The bite structure is embedded in the edge of the mold shell structure to form a bite seal with other mold shell structures. The mold includes a splicing mold and an extrusion mold. Using a prefabricated bite structure achieves high dimensional accuracy. After prefabrication with the mold shell structure, it can form a good sealing connection with adjacent prefabricated mold shells, preventing the connection seams between prefabricated mold shells from becoming weak or porous parts of the overall structure, and resulting in a superior appearance.

Description

Technical Field

[0001] This utility model relates to the field of high weather resistance and high durability mold shell structure, and in particular to a bite structure and mold for high weather resistance and high durability non-disassembly mold shell. Background Technology

[0002] In building construction, prefabricated construction without the need for formwork can significantly improve construction efficiency. Using UHPC (Ultra-High Performance Concrete) in coastal buildings can greatly improve the weather resistance and durability of buildings, resist chloride ion attack, and extend the building's service life. Laboratory data shows that UHPC can last up to 100 years, while ordinary concrete does not exceed 50 years. However, existing formwork structures have a single-layer panel thickness of 20-30mm, and thinner panel structures, such as 18mm thick panels, are being developed to reduce the cost of UHPC components. The inventors have developed a formwork structure that can interlock with adjacent formwork panels to improve sealing. This allows formwork structures using materials such as UHPC to achieve high weather resistance and durability in the overall beam-column-wall panel structure, preventing weak and permeable structures at structural joints. However, in actual construction, the inventors found that when the length or height of the formwork exceeds 1.5 meters, the edge-forming interlocking structure lacks precision during preparation, making demolding time difficult to control. During demolding, the interlocking structure is prone to damage and deformation. Analysis shows that when the length or width of the mold shell exceeds 1.5 meters and the plate thickness is relatively thin, the mold shell is prone to deformation, including mechanical and thermal deformation. This affects the precision of the interlocking structure, subsequent construction efficiency, and overall appearance. No applicable solutions have been found in the existing technology. The content described in the background art, including inventive technical content, is included in the background art only for ease of reading and understanding and does not constitute an admission of prior art. Utility Model Content

[0003] The technical problem this invention aims to solve is to provide a seam structure for high-weather-resistant and high-durability formwork shells that do not require disassembly. This structure ensures that the material of the seam template and the formwork shell remains consistent, meeting the requirements of high-weather-resistant and high-durability buildings. It also addresses the problem of insufficient precision in the seam structure, improving its accuracy and ensuring a good appearance and sealing performance after interlocking.

[0004] Another technical problem to be solved by this utility model is to provide a mold for a bite structure of a high weather-resistant, high-durability, non-removable mold shell, which facilitates the preparation of the bite structure.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a biting structure for a high weather-resistant and high-durability mold-free shell, wherein one end of the cross-section of the biting body of the biting structure is provided with a first horizontal section, a protrusion, a groove and a second horizontal section in sequence along the thickness direction;

[0006] The width of the first horizontal segment and the second horizontal segment are the same. The protrusion and the groove are roughly the same in shape, adjacent in position, and opposite in direction.

[0007] A connecting post is provided at the other end of the cross-section of the interlocking structure;

[0008] The bite structure is used to embed at the edge of the mold shell structure to form an interlocking seal with other mold shell structures.

[0009] In the preferred embodiment, the two interlocking structures can form a mutually interlocking and sealing structure after being rotated 180°.

[0010] In a preferred embodiment, the depth of the groove is greater than the height of the protrusion, with a height difference of 1 to 4 mm, to form a glue storage structure.

[0011] In a preferred embodiment, the number of bonding columns is 1 to 2;

[0012] The surface of the bonding column has a textured structure.

[0013] In a preferred embodiment, the edges of the first horizontal segment, the protrusion, and the second horizontal segment are provided with chamfered structures.

[0014] Reinforcing ribs are provided at the connection point between the connecting post and the interlocking body;

[0015] A step is provided on the side wall where the interlocking body connects to the mold shell structure.

[0016] In the preferred embodiment, the material of the bite structure is UHPC.

[0017] A mold for preparing a bite structure of high weather resistance and high durability without mold disassembly includes an upper mold and a lower mold. At one end of the cross-section of the bite body forming part of the upper mold, a first horizontal section forming part, a protrusion forming part, a groove forming part and a second horizontal section forming part are sequentially provided along the thickness direction.

[0018] The width of the first horizontal segment forming part and the width of the second horizontal segment forming part are the same. The shape of the protruding forming part and the groove forming part are roughly the same. They are adjacent in position but opposite in direction.

[0019] The lower mold is equipped with a connecting column forming part.

[0020] In the preferred embodiment, the height of the groove forming part is greater than the height of the protrusion forming part, and the height difference is 1~4mm;

[0021] A textured forming section is provided in the joint column forming section;

[0022] The parting lines of the upper and lower molds are set at positions that do not interfere with the protruding forming parts and the groove forming parts.

[0023] In the preferred embodiment, the lower mold is divided into 2 or 5 parts depending on the number of connecting pillars;

[0024] When there is one connecting pillar, the lower mold is divided into two parts, and the dividing line is located at the forming part of the connecting pillar;

[0025] When there are 2 connecting pillars, the lower mold is divided into 5 parts, including 2 outer forming parts located on the outside, 2 middle forming parts located in the middle, and a connecting part is provided between the middle forming parts;

[0026] The dividing line between the outer molding part and the middle molding part is located at the position of the connecting column molding part, and the dividing line between the middle molding part and the assembly part is located between the two connecting column molding parts.

[0027] A die for preparing a bite structure for high weather resistance and high durability without mold disassembly, the die is an extrusion die, and has a material storage section and a die section along the length direction;

[0028] The storage section is equipped with a cavity for storing concrete material, and a piston is installed inside the cavity;

[0029] The mold section has a first horizontal section forming part, a protrusion forming part, a groove forming part and a second horizontal section forming part sequentially along the thickness direction at one end of the cross-section of the biting body forming part.

[0030] The width of the first horizontal segment forming part and the width of the second horizontal segment forming part are the same. The shape of the protruding forming part and the groove forming part are roughly the same. They are adjacent in position but opposite in direction.

[0031] The other end of the cross-section of the bite body forming part is provided with a connecting post forming part;

[0032] The length of the mold section is set to a point where the concrete material will not deform after being extruded from the mold section and reaching initial setting.

[0033] This utility model provides a bite structure and mold for a high weather-resistant, high-durability, non-removable mold shell, which has the following beneficial effects:

[0034] 1. This utility model adopts a prefabricated interlocking structure, which can achieve high dimensional accuracy. After the prefabrication of the mold shell structure, it can form a good sealing connection structure with the adjacent prefabricated mold shells, so that the connection seam between the prefabricated mold shells will not become a weak and permeable part of the entire structure, and the appearance effect is excellent.

[0035] 2. By adopting a combination structure of protrusions and grooves, only one size of bite structure needs to be prepared, which can be used on all sides of the mold shell structure, reducing the difficulty of preparation.

[0036] 3. The height difference between the raised and recessed parts is designed to accommodate the glue application. This ensures a good seal and prevents excess glue from overflowing and affecting the appearance.

[0037] 4. The mold of this utility model can produce a high-precision bite structure, and the design of the partition seam facilitates demolding.

[0038] 5. The extrusion die of this invention can continuously produce bite-shaped structures, improving the production efficiency of high-precision bite-shaped structures. The die section is set with sufficient length to prevent deformation of the extruded bite-shaped structure. Attached Figure Description

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0040] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0041] Figure 2 This is a cross-sectional schematic diagram of another preferred embodiment of the present invention.

[0042] Figure 3 This is a partial cross-sectional schematic diagram of the present invention when combined with the mold shell structure.

[0043] Figure 4 This is a partial cross-sectional schematic diagram of the adjacent mold shell structures in this utility model when they are connected to each other.

[0044] Figure 5 This is a schematic diagram of the cross-section of the mold in this utility model.

[0045] Figure 6 This is a schematic diagram of the extrusion die in this utility model.

[0046] Figure 7 for Figure 6 AA sectional view.

[0047] In the diagram: 1. Protrusion; 2. First horizontal section; 3. Engaging body; 4. Second horizontal section; 5. Groove; 6. Height difference; 7. Connecting post; 71. First connecting post; 72. Second connecting post; 8. Texture structure; 9. Glue application; 10. Upper mold; 11. Lower mold; 12. Protrusion forming part; 13. First horizontal section forming part; 14. Groove forming part; 15. Second horizontal section forming part; 16. Parting line; 17. Connecting post forming part; 18. Texture forming part; 181. Outer side forming part; 182. Middle side forming part; 183. Gathering part; 19. Material storage section; 20. Mold section; 21. Piston; 22. Concrete material; 23. Engaging body forming part; 100. Engagement structure; 200. Mold shell structure. Detailed Implementation

[0048] A building located by the sea is affected by salt spray and alternating wet and dry climates, requiring improved weather resistance, corrosion resistance, and service life. Existing prefabricated formwork systems integrate the reinforcing cage and formwork to improve construction efficiency. However, at joints between the various formwork sections, such as the connection between a current-floor column and a pre-reserved column, or the connection between a wall and a pre-reserved wall end, the current practice uses traditional methods. This involves welding or using sleeves to connect the main reinforcing bars of the cage before erecting the formwork and pouring concrete. For ease of construction, these joints typically need to be 15-20cm wide. Compared to other areas where UHPC (Ultra-High-Pressure Polymer) is used, the freshly poured concrete has insufficient impermeability, creating leakage channels. UHPC costs 10-14 times more than ordinary concrete. Considering cost, it's difficult to pour UHPC entirely at the joints; only commonly used C30-C50 concrete can be used. This makes the joints weak points in the building's weather resistance and corrosion resistance, failing to meet the requirements for weather resistance, corrosion resistance, and extended service life. The inventors propose to use a joint structure 100 and a method of separating the precast mold shell and the steel cage for connection in order to improve the anti-seepage effect at the joint.

[0049] Example 1:

[0050] like Figure 1 , 2 In the present invention, a biting structure for a high weather-resistant and high-durability mold shell is provided, wherein one end of the cross-section of the biting body 3 of the biting structure 100 is provided with a first horizontal section 2, a protrusion 1, a groove 5 and a second horizontal section 4 in sequence along the thickness direction.

[0051] The width of the first horizontal segment 2 and the second horizontal segment 4 are the same. The protrusion 1 and the groove 5 have roughly the same shape, are adjacent in position, and are in opposite directions.

[0052] The other end of the cross-section of the bite structure 100 is provided with a connecting post 7;

[0053] The bite structure 100 is embedded in the edge of the mold shell structure 200 to form an interlocking seal with other mold shell structures 200.

[0054] Preferred solutions include Figure 4 In this structure, the two interlocking structures can be rotated 180° to form a mutually interlocking and sealing structure.

[0055] Preferred solutions include Figure 1 , 2In section 4, the depth of the groove 5 is greater than the height of the protrusion 1, with a height difference of 1-4 mm, to form a glue storage structure. During use, commercially available construction AB glue is applied to the interlocking structure. When the interlocking structures of the two precast molds interlock, the AB glue is compressed to form an adhesive film. After curing, the interlocking structures 100 are bonded and sealed together. Testing showed that this construction method meets the requirements for tensile strength and impermeability.

[0056] Preferred solutions include Figure 1 , Figure 2 In this context, the number of bonding columns 7 is 1 to 2; the number here refers to... Figure 1 , 2 As shown, there are 1 to 2 bite structures when viewed from the cross-section of the bite structure 100.

[0057] like Figures 1-4 In the middle, a textured structure 8 is provided on the surface of the connecting column 7.

[0058] Preferred solutions include Figure 1 , 2 In the middle, the edges of the first horizontal section 2, the protrusion 1 and the second horizontal section 4 are provided with chamfered structures;

[0059] like Figures 1-3 In the middle, a reinforcing rib is provided at the position where the connecting post 7 connects to the interlocking body 3;

[0060] A step is provided on the side wall where the interlocking body 3 connects to the mold shell structure 200.

[0061] Preferred solutions include Figure 3 In the middle, the material of the bite structure 100 is UHPC.

[0062] During construction, the reinforcing cage is first installed. Then, construction AB adhesive, such as Kafuter K-502 structural AB adhesive, is applied to the interlocking structures 100 of the adjacent formwork-free shells. Next, the interlocking structures 100 of the adjacent formwork-free shells are joined together. Excess adhesive is cleaned up, and the shells are secured using support devices, such as diagonal braces or similar mechanical equipment. Finally, concrete is poured, completing the construction of the formwork-free shell.

[0063] Example 2:

[0064] like Figure 5 In the present invention, a mold for preparing a bite structure for a high weather-resistant and high-durability mold shell that does not require disassembly includes an upper mold 10 and a lower mold 11. A first horizontal section forming part 13, a protruding forming part 12, a groove forming part 14 and a second horizontal section forming part 15 are sequentially provided along the thickness direction at one end of the cross-section of the bite forming part 23 of the upper mold 10.

[0065] The first horizontal segment forming part 13 and the second horizontal segment forming part 15 have the same width, and the protruding forming part 12 and the groove forming part 14 have roughly the same shape, are adjacent in position, and are opposite in direction.

[0066] The lower mold 11 is provided with a connecting column forming part 17. The mold in this example is a modular mold, that is, the cavity of the mold is formed by the assembly of multiple parts. It also includes an end mold, which is an end plate structure that seals the cavity, not shown in the figure.

[0067] In the preferred embodiment, the height of the groove forming part 14 is greater than the height of the protrusion forming part 12, and the height difference 6 is 1~4mm;

[0068] A textured forming part 18 is provided in the column forming part 17;

[0069] like Figure 5 In the middle, the parting line 16 of the upper mold 10 and the lower mold 11 is set at a position that does not interfere with the protrusion forming part 12 and the groove forming part 14.

[0070] Preferred solutions include Figure 5 In the middle, the lower mold 11 is divided into 2 or 5 parts depending on the number of connecting pillars 7; for a bite structure with a single connecting pillar forming part 17 and a textureless forming part 18, it can be divided into an upper mold 10 and a lower mold 11; for a bite structure with a single connecting pillar forming part 17 and a textured forming part 18, it can be divided into one upper mold 10 and two lower molds 11; for a bite structure with two connecting pillar forming parts 17 and a textureless forming part 18, it can be divided into one upper mold 10 and three lower molds; and for a bite structure with two connecting pillar forming parts 17 and a textured forming part 18, it is... Figure 5 The structure shown includes an upper mold 10, two outer molding portions 181, a middle molding portion 182, and a fitting portion 183 forming a lower mold assembly. The dividing line between the outer molding portions 181 and the middle molding portions 182 is located at the position of the connecting pillar molding portion 17, and the dividing line between the middle molding portion 182 and the fitting portion 183 is located between the two connecting pillar molding portions 17.

[0071] In use, first assemble the lower mold 11, then pour a fixed amount of UHPC into the mold cavity, close the upper mold 10, and continue pouring UHPC from one or both ends. Close the end mold to complete the pouring construction. After curing until initial setting, demold and continue steam curing to obtain the interlocking structure 100.

[0072] Example 3:

[0073] like Figure 6 , 7 Among them, a mold for preparing a bite structure of high weather resistance, high durability and no mold disassembly is a mold, the mold is an extrusion mold, and a material storage section 19 and a mold section 20 are provided along the length direction;

[0074] The storage section 19 is provided with a cavity for storing concrete material 22, and a piston 21 is provided in the cavity;

[0075] The mold section 20 has a first horizontal section forming part 13, a protrusion forming part 12, a groove forming part 14 and a second horizontal section forming part 15 sequentially provided along the thickness direction at one end of the cross-section of the biting body forming part 23.

[0076] The first horizontal segment forming part 13 and the second horizontal segment forming part 15 have the same width, and the protruding forming part 12 and the groove forming part 14 have roughly the same shape, are adjacent in position, and are opposite in direction.

[0077] The other end of the cross-section of the bite body forming part 23 is provided with a connecting post forming part 17;

[0078] The length of mold section 20 is set such that the concrete material 22, after being extruded from mold section 20, reaches a point where it will not deform after initial setting. In this example, the mold is an extrusion mold. The advantage of an extrusion mold is its high production efficiency and the ability to achieve the required forming precision.

[0079] In use, the piston 21 is removed, and the UHPC concrete material 22 is filled into the cavity of the storage section 19. Then, the piston 21 is installed, and the piston 21 is pushed by mechanical force, such as an electric push rod, or by hydraulic pressure, such as driving a hydraulic cylinder or manually, so that the concrete material 22 is squeezed out from the interlocking body forming section 23. During the process of passing through the mold section 20, the concrete material 22 is roughly initially set and will not collapse. The interlocking structure 100 realizes extrusion molding.

[0080] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The embodiments and features described in this application can be arbitrarily combined without conflict. The protection scope of this utility model should be defined as the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A seam structure for high weather resistance, high durability, and no-disassembly molded shells, characterized in that: The bite structure (100) has a first horizontal section (2), a protrusion (1), a groove (5) and a second horizontal section (4) sequentially arranged along the thickness direction at one end of the bite body (3). The widths of the first horizontal segment (2) and the second horizontal segment (4) are the same. The protrusion (1) and the groove (5) have roughly the same shape, are adjacent in position, and are in opposite directions. The other end of the cross section of the bite structure (100) is provided with a connecting post (7). The bite structure (100) is used to be embedded in the edge of the mold shell structure (200) to form an interlocking seal with other mold shell structures (200).

2. The interlocking structure for high weather resistance, high durability, and no-disassembly molded shells according to claim 1, characterized in that: After the two interlocking structures (100) are rotated 180°, they can form a structure that interlocks and seals with each other.

3. The interlocking structure for high weather resistance, high durability, and no-disassembly molded shells according to claim 1, characterized in that: The depth of the groove (5) is greater than the height of the protrusion (1), and the height difference (6) is 1~4mm, so as to form a glue storage structure.

4. The interlocking structure for high weather resistance, high durability, and no-disassembly molded shells according to claim 1, characterized in that: The number of the aforementioned bonding columns (7) is 1 to 2; A textured structure (8) is provided on the surface of the bonding column (7).

5. The interlocking structure for high weather resistance, high durability, and non-removable mold shells according to claim 1, characterized in that: in The edges of the first horizontal segment (2), the protrusion (1), and the second horizontal segment (4) are provided with chamfered structures; A reinforcing rib is provided at the connection point between the connecting column (7) and the interlocking body (3); A step is provided on the side wall where the interlocking body (3) connects to the mold shell structure (200).

6. The interlocking structure for high weather resistance, high durability, and no-disassembly molded shells according to claim 1, characterized in that: The bite structure (100) is made of UHPC.

7. A mold for preparing the bite structure of the high weather-resistant, high-durability, non-removable mold shell as described in any one of claims 1 to 6, characterized in that: It includes an upper mold (10) and a lower mold (11). At one end of the cross-section of the interlocking body forming part (23) of the upper mold (10), a first horizontal section forming part (13), a protrusion forming part (12), a groove forming part (14), and a second horizontal section forming part (15) are sequentially provided along the thickness direction. The width of the first horizontal segment forming part (13) and the second horizontal segment forming part (15) are the same, and the shape of the protruding forming part (12) and the groove forming part (14) are roughly the same, adjacent in position, and opposite in direction; The lower mold (11) is provided with a connecting column forming part (17).

8. The mold with a bite-shaped structure for preparing a high-weather-resistant, high-durability, non-removable mold shell according to claim 7, characterized in that: The height of the groove forming part (14) is greater than the height of the protruding forming part (12), and the height difference (6) is 1~4mm; A textured part (18) is provided in the column forming part (17); The parting line (16) of the upper mold (10) and the lower mold (11) is set at a position that does not interfere with the protrusion forming part (12) and the groove forming part (14).

9. The mold with a bite-shaped structure for preparing a high-weather-resistant, high-durability, non-removable mold shell according to claim 7, characterized in that: The lower mold (11) is divided into 2 or 5 parts depending on the number of connecting pillars (7); When there is one connecting column (7), the lower mold (11) is divided into two, and the dividing line is located at the position of the connecting column forming part (17); When there are 2 connecting pillars (7), the lower mold (11) is divided into 5 parts, including 2 outer forming parts (181) located on the outside, 2 middle forming parts (182) located in the middle, and a connecting part (183) is provided between the middle forming parts (182). The dividing line between the outer molding part (181) and the middle molding part (182) is located at the position of the connecting column molding part (17), and the dividing line between the middle molding part (182) and the connecting part (183) is located between the two connecting column molding parts (17).

10. A mold for preparing the bite structure of the high weather-resistant, high-durability, non-removable mold shell as described in any one of claims 1 to 6, characterized in that: The mold is an extrusion mold, and has a storage section (19) and a mold section (20) along its length. The storage section (19) is provided with a cavity for storing concrete material (22), and a piston (21) is provided in the cavity. The mold section (20) is provided with a first horizontal section forming part (13), a protrusion forming part (12), a groove forming part (14), and a second horizontal section forming part (15) in sequence along the thickness direction at one end of the cross section of the bite body forming part (23). The width of the first horizontal segment forming part (13) and the second horizontal segment forming part (15) are the same, and the shape of the protruding forming part (12) and the groove forming part (14) are roughly the same, adjacent in position, and opposite in direction; The other end of the cross section of the bite body forming part (23) is provided with a connecting column forming part (17). The length of the mold section (20) is set such that the concrete material (22) reaches the initial setting point without deformation after being extruded from the mold section (20).

Images