A mold assembly

Abstract

The present application relates to the technical field of prefabricated component production mould, and more particularly to a mould assembly for forming a female splicing end of a concrete pile wall, comprising: at least one first mould plate with a deformation reset function and at least one second mould plate with rigidity and capable of supporting the first mould plate, the first mould plate being adapted to at least an end profile of the female splicing end in the thickness direction of the concrete pile wall, and the second mould plate being adapted to the remaining end profile of the female splicing end and at least one end being capable of entering and exiting the female splicing end, wherein a forming surface of the first mould plate is formed as a protrusion away from the second mould plate in the thickness direction of the concrete pile wall at least at a predetermined distance from the end surface of the female splicing end. The present application has the effect of achieving modelling and smooth demoulding at the female splicing end of the concrete pile wall, and improves the forming quality and connecting strength of the prefabricated component.

Description

Technical Field

[0001] This invention relates to the field of mold technology for precast component production, and more particularly to a mold assembly. Background Technology

[0002] With the continuous development of the construction industry, there are many types of precast components. Similarly, the molds and equipment used to prepare precast components are also constantly being updated. In the production of precast components, the demolding problem has always been a major concern. How to ensure the molding of precast components and successfully complete demolding is a key focus for many building materials practitioners. In particular, precast components with concave and convex structures are more difficult to demold. The use of concave and convex structures can improve the accuracy of the position of the precast component and strengthen the connection reliability of the splicing of the precast component, which facilitates subsequent waterproofing construction and reduces water seepage into the foundation pit. This presents new challenges for the molds used in manufacturing irregularly shaped underground precast components. After molding, prestress concentration easily occurs at the concave and convex sections of the precast components, making demolding difficult. Forced demolding greatly increases the probability of localized damage to the irregularly shaped precast components, significantly reducing their quality and preventing them from meeting required usage requirements, resulting in a high defect rate. One existing demolding method involves making the side molds movable, allowing them to be moved to both sides after molding, followed by demolding. However, this method is not feasible for precast components with dovetail joints, as dovetail joints are inverted trapezoidal structures, meaning the bottom of the groove is larger than the opening. Furthermore, this method results in a large space occupation and low demolding efficiency. Therefore, optimizing and improving the molds for the concave and convex sections of the precast components is an urgent problem to be solved. Summary of the Invention

[0003] To address the problems of complex mold manufacturing and difficult demolding in existing technologies with complex concave-convex structures, this invention provides a mold assembly for forming the female splice end of a concrete pile wall, comprising: at least one first template with deformation and reset function and at least one second template with rigidity and capable of supporting the first template. The first template is at least adaptable to the end profile formed by the female splice end in the thickness direction of the concrete pile wall, and the second template is adapted to the remaining end profiles of the female splice end and at least one end can enter and exit the female splice end.

[0004] Wherein, the forming surface of the first template forms a protrusion away from the second template in the thickness direction of the concrete pile wall at least at a predetermined distance from the end face of the mother splice end, and the length value of the second template is greater than the thickness value.

[0005] The technical solution of the present invention also includes that at least one of the first templates and at least one of the second templates are integral structures;

[0006] Alternatively, the first template and the second template may be fixed by one or a combination of screwing, snap-fitting, pinning, plugging, overlapping, and magnetic connection.

[0007] The technical solution of the present invention further includes that the second template includes: a bearing surface for supporting the first template; and a first shaping surface symmetrically arranged in the thickness direction of the concrete pile wall and a second shaping surface facing the width direction of the concrete pile wall;

[0008] Among them, at least two of the first shaped surface, the second shaped surface, and the load-bearing surface are integral structures.

[0009] The technical solution of the present invention also includes that the second shaped surface includes at least one protrusion along the width direction of the concrete pile wall;

[0010] Wherein, at least one of the bearing surfaces has a partially perforated structure between it and the first template, or, the first template has a perforated structure.

[0011] The technical solution of the present invention further includes providing a shaping auxiliary plate on the second shaping surface, which has a shape and outline that are approximately the same as those of the second shaping surface, and the shaping auxiliary plate is closely attached to the second shaping surface; wherein, the shaping auxiliary plate and the first template are an integral structure;

[0012] Alternatively, the shaped auxiliary plate and the first template may be fixed by one or more of the following methods: screw connection, snap connection, pin connection, plug connection, overlap connection, magnetic connection.

[0013] The technical solution of the present invention further includes an upper convex section provided at the end of the first template away from its protrusion, wherein a groove adapted to the upper convex section is provided on the first shaped surface of the second template.

[0014] The technical solution of the present invention also includes that at least a portion of the structure of the first template and / or the shaping auxiliary plate is made of flexible, plastic or rubber material;

[0015] The first template and / or the overall structure of the shaped auxiliary plate are made of flexible, plastic or rubber materials.

[0016] The technical solution of the present invention also includes two first templates symmetrically arranged along the thickness direction of the concrete pile wall, wherein the distance L1 between the two symmetrically arranged first templates is greater than or equal to the distance L2 between the two symmetrically arranged bearing surfaces.

[0017] The technical solution of the present invention also includes that at least one mounting hole is provided on the second template;

[0018] The mounting hole may be a threaded hole, a plug-in hole, or a snap-fit ​​hole.

[0019] The technical solution of the present invention also includes that the cross-section of the end contour of the molding cavity of the mold assembly is approximately dovetail-shaped, semi-dovetail-shaped, T-shaped, or L-shaped.

[0020] The beneficial effects of the present invention are as follows: the forming surface of the first template forms a protrusion away from the second template in the thickness direction of the concrete pile wall at least at a predetermined distance from the end face of the female splice end. By cooperating with the second template in the mold assembly, the female splice end forms an end profile with a complex groove structure in the thickness direction of the concrete pile wall. The first template has a deformation and reset function, the second template has rigidity and can be used to support the first template, and at least one end can enter and exit the female splice end. This allows the mold assembly to form the groove structure of the precast component and demold smoothly, thereby improving the forming quality and connection strength of the concrete pile wall. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the concrete pile wall structure in this invention;

[0022] Figure 2 This is a schematic diagram of the mold assembly in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of another structure of the mold assembly in Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the mold assembly in Embodiment 2 of the present invention;

[0025] Figure 5 This is a schematic diagram of the mold assembly in its disassembled state in Embodiment 2 of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the mold assembly in Embodiment 2 of the present invention;

[0027] Figure 7 This is a schematic diagram of another structure of the mold assembly in Embodiment 2 of the present invention;

[0028] Figure 8 This is a schematic diagram of another mold assembly according to Embodiment 2 of the present invention;

[0029] Figure 9 This is a schematic diagram of another type of mold assembly in Embodiment 2 of the present invention;

[0030] The list of labels in the diagram is as follows:

[0031] 1. First template; 11. Protrusion; 12. Hole structure; 13. Upper protruding section; 2. Second template; 21. Bearing surface; 22. First shaping surface; 23. Second shaping surface; 24. Installation hole; 3. Shaping auxiliary plate; 100. Concrete pile wall; 101. Female splicing end; 102. Male splicing end. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may change. Therefore, they should not be interpreted as absolute limitations on the scope of protection. Moreover, relational terms such as "first" and "second" are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0034] The mold assembly disclosed in this invention can be used to form the mother splice end of precast concrete pile walls, and can form a mother splice end with a relatively complex shape, which is convenient to enhance the connection strength and sealing of adjacent pile walls, and is easy to demold.

[0035] Example 1

[0036] In this embodiment, as Figure 1 As shown, this mold assembly is mainly used to form the female splicing end 101 of the concrete pile wall 100. The female splicing end 101 is defined as the end of the concrete pile wall 100 that forms a recess. The concrete pile wall 100 can be prefabricated in the factory in advance. The female splicing end 101 and / or male splicing end 102 are formed at the ends that are connected to each other. When adjacent concrete pile walls 100 are spliced, the male splicing end 102 is inserted into the female splicing end 101. On the one hand, this ensures the accurate positioning of the concrete pile wall 100 and prevents it from shifting, which would affect the construction progress. On the other hand, it improves the connection effect between adjacent concrete pile walls 100. At the same time, concrete or sealing material can be injected after the adjacent concrete pile walls 100 are connected to strengthen the sealing effect between them. Thus, this pre-concrete pile wall 100 can be used to replace the underground continuous wall, avoiding the high operating cost of the underground continuous wall and the problem of waste mud disposal caused by the construction site when working in urban areas.

[0037] To ensure the molding quality of the female splice end 101 of the molded concrete pile wall 100, and to ensure smooth demolding after the concrete pile wall 100 is molded, such as Figure 2As shown, the mold assembly includes: at least one first template 1 with deformation and recovery function, wherein the first template 1 is adapted to at least the portion of the end profile of the female splice end 101 that is recessed in the thickness direction of the concrete pile wall 100; and a second template 2 for supporting the first template 1 and adapting to the remaining end profile of the female splice end 101, with at least one end capable of entering and exiting the female splice end 101, wherein the forming surface of the first template 1 is formed at least at a predetermined distance from the end face of the female splice end 101, facing away from the second template in the thickness direction of the concrete pile wall 100. The protrusion 11 of plate 2 is used to form the complete end contour of the mother splice end 101 during the precast concrete pile wall 100. After the concrete pile wall 100 is formed, the deformation recovery function of the first template 1 is used for demolding. The so-called deformation recovery function can be understood as an elastic structure, such as a spring or rubber, which deforms under a certain external force and restores its own structural shape after the external force is removed, thus improving the forming quality and demolding efficiency of the concrete pile wall 100. The length of the second template 2 is greater than its thickness.

[0038] As described above, the forming surface of the first template 1 forms a protrusion 11 at least a predetermined distance from the end face of the mother splice end 101, which is opposite to the second template 2 in the thickness direction of the concrete pile wall 100. As a key technology of this embodiment, the protrusion 11 is one of the key technologies that makes the cross-section of the end profile have a complex concave-convex structure of "dovetail", "semi-dovetail", "T" and "L" shape. Moreover, the "dovetail", "semi-dovetail", "T" and "L" shapes are all structures where the bottom of the groove is larger than the opening of the groove. After the concrete pile wall 100 is formed, it is difficult to demold. Forced demolding will cause local damage to the concrete pile wall 100 and destroy the forming quality of the concrete pile wall 100. However, this type of concave-convex structure improves the connection strength and waterproofness of the concrete pile wall 100, and facilitates subsequent waterproof construction, such as filling the adjacent concrete pile walls 100 with concrete or sealing materials, reducing water seepage into the foundation pit and the loss of mud and sand, and improving the connection strength and waterproof effect of the concrete pile wall 100.

[0039] In this embodiment, in order for the first template 1 mentioned to have a deformation and reset function, at least part of the structure of the first template 1 used to form the mold assembly is made of flexible, plastic or rubber material; or, the entire structure is made of flexible, plastic or rubber material. Of course, it is not limited to this, and any structure that can achieve the same effect is acceptable.

[0040] like Figure 2As shown, in this embodiment, there are two structural forms between the first template 1 and the second template 2 in the mold assembly. One is that the first template 1 and the second template 2 are an integral structure, which is the most suitable technical solution. The second template 2 includes: a bearing surface 21 for supporting the first template 1, to prevent the first template 1 from being partially or entirely deformed by the weight of the concrete due to insufficient bearing capacity, thus affecting the forming quality of the concrete pile wall 100. The bearing surface 21 can play a supporting role to ensure the forming quality of the concrete pile wall 100. It also includes a first shaping surface 22 symmetrically arranged in the thickness direction of the concrete pile wall 100 and integrally formed with the bearing surface 21, and a second shaping surface 23 facing the width direction of the concrete pile wall, used to form the end contours other than the first template 1. After the concrete pile wall 100 is formed, the first template 1 moves in and out of the mother splicing end 101 together with the second template 2. For example, by pulling the second template 2, the first template 1 is deformed by a certain pulling force. Then, the first template 1 and the second template 2 detach from the concrete pile wall 100 together, completing the demolding. This reduces the complexity of mold assembly, facilitates the disassembly and installation of the mold assembly, and improves demolding efficiency and construction efficiency. Another one is, such as Figure 2 As shown, the first template 1 and the second template 2 can be fixed by one or more of the following methods: screw connection, snap connection, pin connection, plug connection, overlap connection, magnetic connection. They can be disassembled and installed. After the concrete pile wall is precast, the second template 2 is first separated from the first template 1, and then the first template 1 is removed from the concrete pile wall 100 to complete the demolding. This makes demolding more convenient while ensuring the forming quality of the concrete pile wall.

[0041] In this embodiment, as Figure 2 As shown, an upper protrusion 13 is provided at the end of the first template 1 away from its protrusion 11. The first shaping surface 22 of the second template 2 is provided with a groove that matches the upper protrusion 13. Screws can be used to connect the upper protrusion 13 and the groove that matches it, or the upper protrusion 13 can be snapped into the groove, thus ensuring the reliability of the connection between the first template 1 and the second template 2.

[0042] In this embodiment, as Figure 2-3 As shown, a partial hole structure 12 is formed between at least one bearing surface 21 and the first template 1, or a hole structure 12 is provided on the first template 1. Under the premise of ensuring the formation of the end profile of the mother splicing end 101, the weight of the first template 1 is reduced, which facilitates the installation of the mold assembly. The second shaping surface 23 includes at least one protrusion, which can be used as a drainage channel or sealing channel when adjacent concrete pile walls 100 are spliced. Thus, the pre-concrete pile wall 100 can be used to replace the underground continuous wall, avoiding the high operating cost of the underground continuous wall and the problem of waste mud disposal caused by the construction site, especially in urban operations.

[0043] In this embodiment, as Figure 2 As shown, at least one mounting hole is also provided on the second template 2 to ensure that the second template 2 and the first template 1 can be installed on a fixed structure such as an outer mold or wall panel. This prevents the first template 1 and the second template 2 from shifting relative to the concrete pile wall 100 due to vibration or impact during concrete placement, thus affecting the forming quality of the concrete pile wall 100. The mounting hole 24 mentioned is a threaded hole, a plug-in hole, or a snap-fit ​​hole.

[0044] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

[0045] Example 2

[0046] The parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0047] This embodiment provides another structural form of the mold assembly, such as Figure 3 or Figure 4As shown, the mold assembly includes: a first template 1, a second template 2, and a shaping auxiliary plate 3. The shaping auxiliary plate 3 is disposed on the second shaping surface 23 and has a shape and outline approximately the same as the second shaping surface 23. Its function is to adapt to the end profile formed by the female splicing end 101 in the width direction of the concrete pile wall 100. In this embodiment, there are two structural forms between the shaping auxiliary plate 3 and the first template 1: one is that the shaping auxiliary plate 3 and the first template 1 are integrally formed, which is simpler and more convenient; the other is that the shaping auxiliary plate 3 and the first template 1 are connected by screws. Fixing with one or more of the following methods—joining, snap-fitting, pin-fitting, plugging, overlapping, and magnetic connection—ensures the forming quality of the concrete pile wall 100. Furthermore, it serves as a connection between the two first templates 1 symmetrically positioned along the thickness direction of the concrete pile wall 100, preventing the lower template 1 (defined based on the structural form in the drawings, for ease of description) from tilting downwards or detaching from the bearing surface 21 due to its own weight, thus affecting the forming effect of the concrete pile wall 100. The first template 1 and the decorative auxiliary plate 3 form a double-layer template structure with the second template 2. If the second template 2 is a rigid structure used to support the first template 1 and the decorative auxiliary plate 3, after the concrete pile wall 100 is precast, the second template 2 can be removed from the first template 1 and the decorative auxiliary plate first, and then the first template 1 and the decorative auxiliary plate 3 can be removed from the concrete pile wall 100. The first template 1 and / or the decorative auxiliary plate 3 are at least partially made of flexible, plastic or rubber materials or the entire structure is made of flexible, plastic or rubber materials, mainly to facilitate the removal of the decorative auxiliary plate 3. Therefore, the decorative auxiliary plate 3 is attached to the bearing surface 21 in the second template 2.

[0048] like Figure 5 As shown, the distance L1 between the two symmetrically arranged first templates 1 is greater than or equal to the distance L2 between the two symmetrically arranged bearing surfaces 21, ensuring that the second template 2 can be smoothly separated from the first template and the shaping auxiliary plate 3. Then, the first template 1 and the shaping auxiliary plate 3 are separated from the concrete pile wall 100, thereby improving the demolding efficiency while ensuring the forming quality of the concrete pile wall 100.

[0049] like Figure 7-9 The implementation effects of the "semi-swallowtail", "T" and "L" shaped deformed structures shown are generally the same as those in Embodiment 1 and Embodiment 2, and will not be described in detail here.

[0050] Where the embodiments do not contradict each other, at least some of the technical solutions in each embodiment can be recombine to form the essential technical solution of the present invention. Of course, the embodiments can also reference or include each other. Furthermore, it should be noted that adaptive adjustments and modifications (such as partial additions, partial deletions, and partial modifications) made by those skilled in the art when recombinating the technical means described in the embodiments will also fall within the protection scope of the present invention.

[0051] The mold assembly provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principle of the invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A mold assembly for forming the female splice end (101) of a concrete pile wall (100), characterized in that, include: At least one first template (1) with deformation reset function and at least one second template (2) with rigidity and usable for supporting the first template (1), the first template (1) is at least adaptable to the end profile of the female splice end (101) formed in the thickness direction of the concrete pile wall (100), the second template (2) is adapted to the remaining end profile of the female splice end (101) and at least one end can enter and exit the female splice end (101); Wherein, the forming surface of the first template (1) forms a protrusion (11) at least at a predetermined distance from the end face of the mother splice end (101) that is away from the second template (2) in the thickness direction of the concrete pile wall (100), and the length value of the second template (2) is greater than the thickness value.

2. The mold assembly according to claim 1, characterized in that, At least one of the first templates (1) and at least one of the second templates (2) are integral structures; Alternatively, the first template (1) and the second template (2) can be fixed by one or more of the following methods: screw connection, snap connection, pin connection, plug connection, overlap connection, magnetic connection.

3. The mold assembly according to claim 1, characterized in that, The second template (2) includes: a bearing surface (21) for supporting the first template (1); and a first shaping surface (22) symmetrically arranged in the thickness direction of the concrete pile wall (100) and a second shaping surface (23) facing the width direction of the concrete pile wall; At least two of the first shaped surface (22), the second shaped surface (23), and the bearing surface (21) are integral structures.

4. The mold assembly according to claim 3, characterized in that, The second shaped surface (23) includes at least one protrusion along the width direction of the concrete pile wall; At least one of the bearing surfaces (21) has a partial hole structure (12) between it and the first template (1), or a hole structure (12) is provided on the first template (1).

5. The mold assembly according to claim 4, characterized in that, A styling auxiliary plate (3) with a shape and outline roughly the same as the second styling surface (23) is provided on the second styling surface (23), and the styling auxiliary plate (3) is closely attached to the second styling surface (23); wherein, the styling auxiliary plate (3) and the first template (1) are an integral structure; Alternatively, the shaped auxiliary plate (3) and the first template (1) can be fixed by one or more combinations of screw connection, snap connection, pin connection, plug connection, overlap connection, and magnetic connection.

6. The mold assembly according to claim 3, characterized in that, An upper protrusion (13) is provided at one end of the first template (1) away from its protrusion (11), wherein a groove adapted to the upper protrusion (13) is provided on the first shaping surface (22) of the second template (2).

7. The mold assembly according to claim 3, characterized in that, The first template (1) and / or the shaping auxiliary plate (3) are at least partially made of flexible, plastic or rubber materials; The first template (1) and / or the shaped auxiliary plate (3) are both made of flexible, plastic or rubber materials.

8. The mold assembly according to claim 7, characterized in that, Two first templates (1) are symmetrically arranged along the thickness direction of the concrete pile wall. The distance L1 between the two symmetrically arranged first templates (1) is greater than or equal to the distance L2 between the two symmetrically arranged bearing surfaces (21).

9. The mold assembly according to claim 1, characterized in that, At least one mounting hole (24) is also provided on the second template (2); The mounting hole (24) is a threaded hole, a plug hole, or a snap-fit ​​hole.

10. The mold assembly according to claim 1, characterized in that, The cross-section of the end profile of the molding cavity of the mold assembly is generally dovetail-shaped, semi-dovetail-shaped, T-shaped, or L-shaped.

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