Combined mold for producing external thermal insulation prefabricated outer wall

Abstract

The utility model discloses a combined die for producing an external thermal insulation prefabricated outer wall. The combined die comprises a plurality of thermal insulation limiting strips, two side die assemblies and two end die assemblies, wherein the two side die assemblies and the two end die assemblies are parallel to each other. A pouring cavity is defined by the side mold assemblies and the end mold assemblies. The heat preservation limiting strips are installed on the inner ring edges of the bottoms of the side die assemblies and the end die assemblies respectively. The end mold assembly comprises an adjusting mold located in the middle and end molds fixed to the two ends of the adjusting mold. The heat preservation limiting strips are additionally arranged on the inner ring of the mold, the position of the heat preservation plate is limited in the pouring process, meanwhile, when a finally-formed prefabricated outer wall is connected with other walls in a pouring mode, cold seams generated by the prefabricated wall and cold seams formed by the heat preservation plate are arranged in a staggered mode, and loss of indoor temperature is effectively delayed.

Description

Technical Field

[0001] This utility model belongs to the field of precast concrete component technology, specifically relating to a combined mold for producing precast exterior walls with external insulation. Background Technology

[0002] In existing technologies, the exterior walls account for the largest proportion of heat loss in building envelopes (roofs, floors, exterior walls, doors, windows, etc.). With increasing societal demands for environmental protection and energy conservation, building envelope insulation technology, especially exterior wall insulation, is being continuously strengthened. Currently, commonly used exterior wall insulation in buildings is mainly divided into internal insulation, external insulation, and sandwich insulation. Sandwich insulation requires connectors between the inner and outer wall panels, making its construction more complex than traditional walls, and thus rarely used in engineering projects. Compared to internal insulation, external insulation avoids thermal bridging, which is beneficial for ensuring indoor thermal stability, improving the durability of the building structure, and does not occupy room space. Currently, external insulation is the preferred choice in engineering projects.

[0003] In the traditional cast-in-place construction method, the construction steps for external insulation walls are as follows: after the exterior wall surface is installed, a base treatment is performed to clean the wall surface of oil stains, dust, etc. Only after the base layer passes inspection can insulation construction begin, and the insulation board is fixed to the base wall using adhesives and anchors. This method has the following disadvantages: 1. The construction is complex, and the difficulty and danger of construction are relatively high; 2. At the same time, the insulation boards installed on the facade are relatively easy to fall off.

[0004] In existing technologies, exterior walls can be prefabricated in factories. However, conventional prefabricated exterior walls with insulation boards, formed by casting in molds, have the following technical problems: 1. If the exterior wall dimensions of components produced by traditional molds are the same as the insulation board dimensions, the joint between the prefabricated exterior wall and the cast-in-place structure will be flush with the joint of the outer ring of the insulation board, easily forming a through cold joint; 2. After the concrete is poured, the insulation board is placed on the surface layer. The connection between the insulation board and the concrete lacks pressure, posing a safety hazard of easy detachment; 3. For exterior wall widths and heights that vary, traditional molds need to be custom-made according to the corresponding dimensions. While the standardization of molds is acceptable for high-rise residential projects, molds cannot be reused for public building projects or between two different projects. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides a combined mold for producing prefabricated exterior walls with external insulation, which solves the technical problems such as the easy formation of through cold joints in prefabricated wall panels during the casting process and the difficulty in adapting to the casting of prefabricated wall panels of different sizes.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0007] A modular mold for producing precast exterior walls with external thermal insulation includes multiple insulation limiting strips, two parallel side mold assemblies, and two end mold assemblies. The side mold assemblies and end mold assemblies together form a casting chamber. Each insulation limiting strip is installed on the inner edge of the bottom of the side mold assembly and the end mold assembly.

[0008] The end mold assembly includes an adjustment mold located in the center and end molds fixed at both ends of the adjustment mold.

[0009] Furthermore, the two end mold assemblies are divided into a first casting mold and a second casting mold. The two end molds in the first casting mold are respectively fixed to the two side mold assemblies. Both ends of the two end molds in the second casting mold are provided with clearance slots that mate with the insulation limiting strips. In the initial state, the ends of the insulation limiting strips installed on the side mold assemblies are inserted into the corresponding clearance slots.

[0010] Furthermore, the height of the insulation limiting strip is the same as the thickness of the insulation board to be installed. The width of the insulation limiting strip is 50mm.

[0011] Furthermore, each end mold is provided with a lifting through hole.

[0012] Furthermore, the end mold has two lifting through holes, which are 100mm apart.

[0013] Furthermore, the side mold assembly includes a fixed side mold and an extended side mold. One end of the fixed side mold is fixed to an adjacent end mold, and the other end is fixed to the extended side mold.

[0014] Furthermore, the adjusting mold and the end mold are respectively provided with a first mounting edge and a second mounting edge at both ends. During installation, the two first mounting edges on the adjusting mold are respectively fitted with the second mounting edges on one end of the two end molds, and the connection is locked by bolts.

[0015] Furthermore, the length of the end mold is 500mm.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model, by adding a heat-insulating limiting strip to the inner ring of the mold, not only limits the position of the heat-insulating board during the pouring process, but also ensures that when the precast exterior wall is poured and connected to other walls, the cold joints formed by the precast wall and the cold joints formed by the heat-insulating board are misaligned, effectively delaying the loss of indoor temperature.

[0018] 2. In this utility model, the end mold assembly is divided into two end molds with fixed dimensions and an adjustable mold whose dimensions can be changed according to needs. This allows for the adjustment of the dimensions of the cast precast wall by changing the adjustable mold of different dimensions when casting at different sizes, which greatly improves the reusability of the mold.

[0019] 3. This utility model adopts a reverse pouring process for the insulation board, placing the insulation board at the bottom layer. This allows the concrete to press the insulation board firmly under gravity during the pouring process, resulting in a tighter fit between the concrete and the insulation board. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the end mold in this utility model.

[0022] Reference numerals in the attached drawings: 1. Insulation limiting strip; 2. Side mold assembly; 2-1. Fixed side mold; 2-2. Heightened side mold; 3. End mold assembly; 4. Adjusting mold; 5. End mold; 5-1. Second mounting edge; 5-2. Clearance slot; 5-3. Lifting through hole. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, a combined mold for producing precast exterior walls with external insulation includes multiple insulation limiting strips 1 and a mold body. The mold body includes two parallel side mold assemblies 2 and two end mold assemblies 3. The side mold assemblies 2 and end mold assemblies 3 together form a casting chamber for casting and shaping the precast exterior wall. Each insulation limiting strip 1 is installed on the inner edge of the bottom of the side mold assembly 2 and the end mold assembly 3, and is fixed with bolts. The insulation limiting strips 1 can limit the position of the insulation board placed in the casting chamber during the casting process of the exterior wall.

[0026] After the precast wall panels are cast and formed, the outer edge of the insulation board is spaced apart from the outer edge of the final precast exterior wall, under the constraint of the insulation limiting strip 1. When the precast exterior wall with the insulation board is cast and connected to other walls, the cold joints formed by the precast wall and the cold joints formed by the insulation board are staggered, effectively delaying the loss of indoor temperature.

[0027] In this embodiment, the height of the insulation limiting strip 1 is the same as the thickness of the insulation board, ensuring that the insulation board is flush with the insulation limiting strip 1 in the height direction when installed into the casting chamber. The width of the insulation limiting strip 1 is 50mm, causing the outer edge of the final formed insulation board to be recessed by 50mm relative to the outer edge of the precast exterior wall. This effectively prevents cold joints formed when the insulation board and the precast exterior wall are the same size, which would otherwise be flush with each other and accelerate the loss of indoor temperature.

[0028] like Figure 1 As shown, the end mold assembly 3 includes an adjusting mold 4 located in the center and end molds 5 fixed at both ends of the adjusting mold 4. The adjusting mold 4 and the end molds 5 each have a first mounting edge and a second mounting edge 5-1 at both ends. During installation, the two first mounting edges on the adjusting mold 4 respectively abut against the second mounting edges 5-1 on one end of each end mold 5, and are locked together by bolts. The other ends of the two end molds 5 are fixed to the side mold assembly 2 by bolts.

[0029] Furthermore, such as Figure 1 and 2 As shown, the two end mold assemblies 3 are divided into a first casting mold and a second casting mold. The two end molds 5 of the first casting mold are fixed to the two side mold assemblies 2 respectively. Both ends of the two end molds 5 of the second casting mold are provided with clearance slots 5-2 that cooperate with the heat insulation limiting strip 1.

[0030] In the initial state, the end of the insulation limiting strip 1 installed on the side mold assembly 2 is inserted into the corresponding clearance slot 5-2. When the end mold 5 moves, the clearance slot 5-2 on the end mold 5 can avoid interference with the insulation limiting strip 1. During the specific pouring process, when the required length of the outer wall panel changes, the adjusting mold 4 and the end mold 5 are adjusted along the length direction of the insulation limiting strip 1 to adjust the length of the pouring chamber, thereby adjusting the height of the finally poured outer wall panel.

[0031] In this embodiment, the length of the end mold 5 is 500mm. The length of the adjustable mold 4 is changed and adjusted according to the width of the prefabricated exterior wall to be formed.

[0032] Furthermore, each end mold 5 is provided with a lifting through hole 5-3 for disassembling and assembling the end mold 5. In this embodiment, there are two lifting through holes 5-3 on the end mold 5. The two lifting through holes 5-3 are 100mm apart.

[0033] like Figure 1 As shown, the side mold assembly 2 includes a fixed side mold 2-1 and an extended side mold 2-2. One end of the fixed side mold 2-1 is fixed to the adjacent end mold 5, and the other end is fixed to the extended side mold 2-2 by bolts.

[0034] In this embodiment, the length of the fixed side mold 2-1 is determined by the wall height dimension of the largest number of precast exterior walls to be cast, and the heightened side mold 2-2 is determined based on the maximum wall height dimension to be cast for each block. When the wall height of the precast exterior wall to be cast is at any height between the maximum and minimum wall height dimensions, the wall height dimension can be adjusted by moving the second casting mold.

[0035] The working principle of this utility model:

[0036] Based on the required external wall dimensions, select the corresponding size adjustment mold 4 and heightened side mold 2-2, and complete the assembly between the adjustment mold 4 and the end mold 5, as well as between the fixed side mold 2-1 and the heightened side mold 2-2, to form the required end mold assembly 3 and side mold assembly 2. Fix multiple thermal insulation limiting strips 1 to the bottom of the inner side of the end mold assembly 3 and the side mold assembly 2 respectively with bolts.

[0037] Adjust the distance between the two end formwork components 3 according to the required height of the outer wall to be poured, and fix them to the side formwork components 2 with bolts when adjusted to the specified position.

[0038] After assembling the mold, place the insulation board at the bottom and then place the connectors on the insulation board. Once the wall reinforcement is tied, the concrete can be poured. Under the influence of gravity, the concrete adheres more tightly to the insulation board.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A combined mold for producing precast exterior walls with external thermal insulation, comprising two parallel side mold assemblies (2) and two end mold assemblies (3); the side mold assemblies (2) and the end mold assemblies (3) together form a casting chamber, characterized in that: It also includes multiple thermal insulation limit strips (1). Each heat insulation limiting strip (1) is installed on the inner edge of the bottom of the side mold assembly (2) and the end mold assembly (3); the end mold assembly (3) includes an adjusting mold (4) located in the center and end molds (5) fixed at both ends of the adjusting mold (4).

2. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 1, is characterized in that: The two end mold assemblies (3) are divided into a first casting mold and a second casting mold; the two end molds (5) in the first casting mold are fixed to the two side mold assemblies (2) respectively; the two end molds (5) in the second casting mold are provided with relief slots (5-2) that cooperate with the heat insulation limiting strip (1) at both ends; in the initial state, the end of the heat insulation limiting strip (1) installed on the side mold assembly (2) is inserted into the corresponding relief slot (5-2).

3. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 1, is characterized in that: The height of the insulation limiting strip (1) is the same as the thickness of the insulation board to be installed; the width of the insulation limiting strip (1) is 50mm.

4. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 1, characterized in that: Each of the end molds (5) is provided with a lifting through hole (5-3).

5. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 4, characterized in that: There are two hoisting through holes (5-3) on the end mold (5); the two hoisting through holes (5-3) are 100mm apart.

6. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 1, characterized in that: The side mold assembly (2) includes a fixed side mold (2-1) and an extended side mold (2-2); one end of the fixed side mold (2-1) is fixed to the adjacent end mold (5), and the other end is fixed to the extended side mold (2-2).

7. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 1, characterized in that: The adjustment mold (4) and the end mold (5) are respectively provided with a first mounting edge and a second mounting edge (5-1) at both ends; during installation, the two first mounting edges on the adjustment mold (4) are respectively attached to the second mounting edge (5-1) on one end of the two end molds (5) and fixed by bolts.

8. A combined mold for producing prefabricated exterior walls with external thermal insulation, as described in claim 1, characterized in that: The length of the end mold (5) is 500 mm.

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